1e51060f0SSean Hefty /* 2e51060f0SSean Hefty * Copyright (c) 2005 Voltaire Inc. All rights reserved. 3e51060f0SSean Hefty * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved. 4e51060f0SSean Hefty * Copyright (c) 1999-2005, Mellanox Technologies, Inc. All rights reserved. 5e51060f0SSean Hefty * Copyright (c) 2005-2006 Intel Corporation. All rights reserved. 6e51060f0SSean Hefty * 7a9474917SSean Hefty * This software is available to you under a choice of one of two 8a9474917SSean Hefty * licenses. You may choose to be licensed under the terms of the GNU 9a9474917SSean Hefty * General Public License (GPL) Version 2, available from the file 10a9474917SSean Hefty * COPYING in the main directory of this source tree, or the 11a9474917SSean Hefty * OpenIB.org BSD license below: 12e51060f0SSean Hefty * 13a9474917SSean Hefty * Redistribution and use in source and binary forms, with or 14a9474917SSean Hefty * without modification, are permitted provided that the following 15a9474917SSean Hefty * conditions are met: 16e51060f0SSean Hefty * 17a9474917SSean Hefty * - Redistributions of source code must retain the above 18a9474917SSean Hefty * copyright notice, this list of conditions and the following 19a9474917SSean Hefty * disclaimer. 20e51060f0SSean Hefty * 21a9474917SSean Hefty * - Redistributions in binary form must reproduce the above 22a9474917SSean Hefty * copyright notice, this list of conditions and the following 23a9474917SSean Hefty * disclaimer in the documentation and/or other materials 24a9474917SSean Hefty * provided with the distribution. 25e51060f0SSean Hefty * 26a9474917SSean Hefty * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 27a9474917SSean Hefty * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 28a9474917SSean Hefty * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 29a9474917SSean Hefty * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 30a9474917SSean Hefty * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 31a9474917SSean Hefty * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 32a9474917SSean Hefty * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 33a9474917SSean Hefty * SOFTWARE. 34e51060f0SSean Hefty */ 35e51060f0SSean Hefty 36e51060f0SSean Hefty #include <linux/completion.h> 37e51060f0SSean Hefty #include <linux/in.h> 38e51060f0SSean Hefty #include <linux/in6.h> 39e51060f0SSean Hefty #include <linux/mutex.h> 40e51060f0SSean Hefty #include <linux/random.h> 41bee3c3c9SMoni Shoua #include <linux/igmp.h> 42e51060f0SSean Hefty #include <linux/idr.h> 4307ebafbaSTom Tucker #include <linux/inetdevice.h> 445a0e3ad6STejun Heo #include <linux/slab.h> 45e4dd23d7SPaul Gortmaker #include <linux/module.h> 46366cddb4SAmir Vadai #include <net/route.h> 47e51060f0SSean Hefty 484be74b42SHaggai Eran #include <net/net_namespace.h> 494be74b42SHaggai Eran #include <net/netns/generic.h> 50e51060f0SSean Hefty #include <net/tcp.h> 511f5175adSAleksey Senin #include <net/ipv6.h> 52f887f2acSHaggai Eran #include <net/ip_fib.h> 53f887f2acSHaggai Eran #include <net/ip6_route.h> 54e51060f0SSean Hefty 55e51060f0SSean Hefty #include <rdma/rdma_cm.h> 56e51060f0SSean Hefty #include <rdma/rdma_cm_ib.h> 57753f618aSNir Muchtar #include <rdma/rdma_netlink.h> 582e2d190cSSean Hefty #include <rdma/ib.h> 59e51060f0SSean Hefty #include <rdma/ib_cache.h> 60e51060f0SSean Hefty #include <rdma/ib_cm.h> 61e51060f0SSean Hefty #include <rdma/ib_sa.h> 6207ebafbaSTom Tucker #include <rdma/iw_cm.h> 63e51060f0SSean Hefty 64218a773fSMatan Barak #include "core_priv.h" 65a3b641afSSteve Wise #include "cma_priv.h" 66218a773fSMatan Barak 67e51060f0SSean Hefty MODULE_AUTHOR("Sean Hefty"); 68e51060f0SSean Hefty MODULE_DESCRIPTION("Generic RDMA CM Agent"); 69e51060f0SSean Hefty MODULE_LICENSE("Dual BSD/GPL"); 70e51060f0SSean Hefty 71e51060f0SSean Hefty #define CMA_CM_RESPONSE_TIMEOUT 20 72ab15c95aSAlex Vesker #define CMA_QUERY_CLASSPORT_INFO_TIMEOUT 3000 73d5bb7599SMichael S. Tsirkin #define CMA_MAX_CM_RETRIES 15 74dcb3f974SSean Hefty #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) 753c86aa70SEli Cohen #define CMA_IBOE_PACKET_LIFETIME 18 765ab2d89bSLeon Romanovsky #define CMA_PREFERRED_ROCE_GID_TYPE IB_GID_TYPE_ROCE_UDP_ENCAP 77e51060f0SSean Hefty 782b1b5b60SSagi Grimberg static const char * const cma_events[] = { 792b1b5b60SSagi Grimberg [RDMA_CM_EVENT_ADDR_RESOLVED] = "address resolved", 802b1b5b60SSagi Grimberg [RDMA_CM_EVENT_ADDR_ERROR] = "address error", 812b1b5b60SSagi Grimberg [RDMA_CM_EVENT_ROUTE_RESOLVED] = "route resolved ", 822b1b5b60SSagi Grimberg [RDMA_CM_EVENT_ROUTE_ERROR] = "route error", 832b1b5b60SSagi Grimberg [RDMA_CM_EVENT_CONNECT_REQUEST] = "connect request", 842b1b5b60SSagi Grimberg [RDMA_CM_EVENT_CONNECT_RESPONSE] = "connect response", 852b1b5b60SSagi Grimberg [RDMA_CM_EVENT_CONNECT_ERROR] = "connect error", 862b1b5b60SSagi Grimberg [RDMA_CM_EVENT_UNREACHABLE] = "unreachable", 872b1b5b60SSagi Grimberg [RDMA_CM_EVENT_REJECTED] = "rejected", 882b1b5b60SSagi Grimberg [RDMA_CM_EVENT_ESTABLISHED] = "established", 892b1b5b60SSagi Grimberg [RDMA_CM_EVENT_DISCONNECTED] = "disconnected", 902b1b5b60SSagi Grimberg [RDMA_CM_EVENT_DEVICE_REMOVAL] = "device removal", 912b1b5b60SSagi Grimberg [RDMA_CM_EVENT_MULTICAST_JOIN] = "multicast join", 922b1b5b60SSagi Grimberg [RDMA_CM_EVENT_MULTICAST_ERROR] = "multicast error", 932b1b5b60SSagi Grimberg [RDMA_CM_EVENT_ADDR_CHANGE] = "address change", 942b1b5b60SSagi Grimberg [RDMA_CM_EVENT_TIMEWAIT_EXIT] = "timewait exit", 952b1b5b60SSagi Grimberg }; 962b1b5b60SSagi Grimberg 97db7489e0SBart Van Assche const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event) 982b1b5b60SSagi Grimberg { 992b1b5b60SSagi Grimberg size_t index = event; 1002b1b5b60SSagi Grimberg 1012b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(cma_events) && cma_events[index]) ? 1022b1b5b60SSagi Grimberg cma_events[index] : "unrecognized event"; 1032b1b5b60SSagi Grimberg } 1042b1b5b60SSagi Grimberg EXPORT_SYMBOL(rdma_event_msg); 1052b1b5b60SSagi Grimberg 10677a5db13SSteve Wise const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id, 10777a5db13SSteve Wise int reason) 10877a5db13SSteve Wise { 10977a5db13SSteve Wise if (rdma_ib_or_roce(id->device, id->port_num)) 11077a5db13SSteve Wise return ibcm_reject_msg(reason); 11177a5db13SSteve Wise 11277a5db13SSteve Wise if (rdma_protocol_iwarp(id->device, id->port_num)) 11377a5db13SSteve Wise return iwcm_reject_msg(reason); 11477a5db13SSteve Wise 11577a5db13SSteve Wise WARN_ON_ONCE(1); 11677a5db13SSteve Wise return "unrecognized transport"; 11777a5db13SSteve Wise } 11877a5db13SSteve Wise EXPORT_SYMBOL(rdma_reject_msg); 11977a5db13SSteve Wise 1205042a73dSSteve Wise bool rdma_is_consumer_reject(struct rdma_cm_id *id, int reason) 1215042a73dSSteve Wise { 1225042a73dSSteve Wise if (rdma_ib_or_roce(id->device, id->port_num)) 1235042a73dSSteve Wise return reason == IB_CM_REJ_CONSUMER_DEFINED; 1245042a73dSSteve Wise 1255042a73dSSteve Wise if (rdma_protocol_iwarp(id->device, id->port_num)) 1265042a73dSSteve Wise return reason == -ECONNREFUSED; 1275042a73dSSteve Wise 1285042a73dSSteve Wise WARN_ON_ONCE(1); 1295042a73dSSteve Wise return false; 1305042a73dSSteve Wise } 1315042a73dSSteve Wise EXPORT_SYMBOL(rdma_is_consumer_reject); 1325042a73dSSteve Wise 1335f244104SSteve Wise const void *rdma_consumer_reject_data(struct rdma_cm_id *id, 1345f244104SSteve Wise struct rdma_cm_event *ev, u8 *data_len) 1355f244104SSteve Wise { 1365f244104SSteve Wise const void *p; 1375f244104SSteve Wise 1385f244104SSteve Wise if (rdma_is_consumer_reject(id, ev->status)) { 1395f244104SSteve Wise *data_len = ev->param.conn.private_data_len; 1405f244104SSteve Wise p = ev->param.conn.private_data; 1415f244104SSteve Wise } else { 1425f244104SSteve Wise *data_len = 0; 1435f244104SSteve Wise p = NULL; 1445f244104SSteve Wise } 1455f244104SSteve Wise return p; 1465f244104SSteve Wise } 1475f244104SSteve Wise EXPORT_SYMBOL(rdma_consumer_reject_data); 1485f244104SSteve Wise 149fbdb0a91SSteve Wise /** 150fbdb0a91SSteve Wise * rdma_iw_cm_id() - return the iw_cm_id pointer for this cm_id. 151fbdb0a91SSteve Wise * @id: Communication Identifier 152fbdb0a91SSteve Wise */ 153fbdb0a91SSteve Wise struct iw_cm_id *rdma_iw_cm_id(struct rdma_cm_id *id) 154fbdb0a91SSteve Wise { 155fbdb0a91SSteve Wise struct rdma_id_private *id_priv; 156fbdb0a91SSteve Wise 157fbdb0a91SSteve Wise id_priv = container_of(id, struct rdma_id_private, id); 158fbdb0a91SSteve Wise if (id->device->node_type == RDMA_NODE_RNIC) 159fbdb0a91SSteve Wise return id_priv->cm_id.iw; 160fbdb0a91SSteve Wise return NULL; 161fbdb0a91SSteve Wise } 162fbdb0a91SSteve Wise EXPORT_SYMBOL(rdma_iw_cm_id); 163fbdb0a91SSteve Wise 164fbdb0a91SSteve Wise /** 165fbdb0a91SSteve Wise * rdma_res_to_id() - return the rdma_cm_id pointer for this restrack. 166fbdb0a91SSteve Wise * @res: rdma resource tracking entry pointer 167fbdb0a91SSteve Wise */ 168fbdb0a91SSteve Wise struct rdma_cm_id *rdma_res_to_id(struct rdma_restrack_entry *res) 169fbdb0a91SSteve Wise { 170fbdb0a91SSteve Wise struct rdma_id_private *id_priv = 171fbdb0a91SSteve Wise container_of(res, struct rdma_id_private, res); 172fbdb0a91SSteve Wise 173fbdb0a91SSteve Wise return &id_priv->id; 174fbdb0a91SSteve Wise } 175fbdb0a91SSteve Wise EXPORT_SYMBOL(rdma_res_to_id); 176fbdb0a91SSteve Wise 177e51060f0SSean Hefty static void cma_add_one(struct ib_device *device); 1787c1eb45aSHaggai Eran static void cma_remove_one(struct ib_device *device, void *client_data); 179e51060f0SSean Hefty 180e51060f0SSean Hefty static struct ib_client cma_client = { 181e51060f0SSean Hefty .name = "cma", 182e51060f0SSean Hefty .add = cma_add_one, 183e51060f0SSean Hefty .remove = cma_remove_one 184e51060f0SSean Hefty }; 185e51060f0SSean Hefty 186c1a0b23bSMichael S. Tsirkin static struct ib_sa_client sa_client; 187e51060f0SSean Hefty static LIST_HEAD(dev_list); 188e51060f0SSean Hefty static LIST_HEAD(listen_any_list); 189e51060f0SSean Hefty static DEFINE_MUTEX(lock); 190e51060f0SSean Hefty static struct workqueue_struct *cma_wq; 191c7d03a00SAlexey Dobriyan static unsigned int cma_pernet_id; 192e51060f0SSean Hefty 1934be74b42SHaggai Eran struct cma_pernet { 1944be74b42SHaggai Eran struct idr tcp_ps; 1954be74b42SHaggai Eran struct idr udp_ps; 1964be74b42SHaggai Eran struct idr ipoib_ps; 1974be74b42SHaggai Eran struct idr ib_ps; 1984be74b42SHaggai Eran }; 1994be74b42SHaggai Eran 2004be74b42SHaggai Eran static struct cma_pernet *cma_pernet(struct net *net) 201aac978e1SHaggai Eran { 2024be74b42SHaggai Eran return net_generic(net, cma_pernet_id); 2034be74b42SHaggai Eran } 2044be74b42SHaggai Eran 2052253fc0cSSteve Wise static struct idr *cma_pernet_idr(struct net *net, enum rdma_ucm_port_space ps) 2064be74b42SHaggai Eran { 2074be74b42SHaggai Eran struct cma_pernet *pernet = cma_pernet(net); 2084be74b42SHaggai Eran 209aac978e1SHaggai Eran switch (ps) { 210aac978e1SHaggai Eran case RDMA_PS_TCP: 2114be74b42SHaggai Eran return &pernet->tcp_ps; 212aac978e1SHaggai Eran case RDMA_PS_UDP: 2134be74b42SHaggai Eran return &pernet->udp_ps; 214aac978e1SHaggai Eran case RDMA_PS_IPOIB: 2154be74b42SHaggai Eran return &pernet->ipoib_ps; 216aac978e1SHaggai Eran case RDMA_PS_IB: 2174be74b42SHaggai Eran return &pernet->ib_ps; 218aac978e1SHaggai Eran default: 219aac978e1SHaggai Eran return NULL; 220aac978e1SHaggai Eran } 221aac978e1SHaggai Eran } 222aac978e1SHaggai Eran 223e51060f0SSean Hefty struct cma_device { 224e51060f0SSean Hefty struct list_head list; 225e51060f0SSean Hefty struct ib_device *device; 226e51060f0SSean Hefty struct completion comp; 227e51060f0SSean Hefty atomic_t refcount; 228e51060f0SSean Hefty struct list_head id_list; 229045959dbSMatan Barak enum ib_gid_type *default_gid_type; 23089052d78SMajd Dibbiny u8 *default_roce_tos; 231e51060f0SSean Hefty }; 232e51060f0SSean Hefty 233e51060f0SSean Hefty struct rdma_bind_list { 2342253fc0cSSteve Wise enum rdma_ucm_port_space ps; 235e51060f0SSean Hefty struct hlist_head owners; 236e51060f0SSean Hefty unsigned short port; 237e51060f0SSean Hefty }; 238e51060f0SSean Hefty 239ab15c95aSAlex Vesker struct class_port_info_context { 240ab15c95aSAlex Vesker struct ib_class_port_info *class_port_info; 241ab15c95aSAlex Vesker struct ib_device *device; 242ab15c95aSAlex Vesker struct completion done; 243ab15c95aSAlex Vesker struct ib_sa_query *sa_query; 244ab15c95aSAlex Vesker u8 port_num; 245ab15c95aSAlex Vesker }; 246ab15c95aSAlex Vesker 2472253fc0cSSteve Wise static int cma_ps_alloc(struct net *net, enum rdma_ucm_port_space ps, 248aac978e1SHaggai Eran struct rdma_bind_list *bind_list, int snum) 249aac978e1SHaggai Eran { 2504be74b42SHaggai Eran struct idr *idr = cma_pernet_idr(net, ps); 251aac978e1SHaggai Eran 252aac978e1SHaggai Eran return idr_alloc(idr, bind_list, snum, snum + 1, GFP_KERNEL); 253aac978e1SHaggai Eran } 254aac978e1SHaggai Eran 2554be74b42SHaggai Eran static struct rdma_bind_list *cma_ps_find(struct net *net, 2562253fc0cSSteve Wise enum rdma_ucm_port_space ps, int snum) 257aac978e1SHaggai Eran { 2584be74b42SHaggai Eran struct idr *idr = cma_pernet_idr(net, ps); 259aac978e1SHaggai Eran 260aac978e1SHaggai Eran return idr_find(idr, snum); 261aac978e1SHaggai Eran } 262aac978e1SHaggai Eran 2632253fc0cSSteve Wise static void cma_ps_remove(struct net *net, enum rdma_ucm_port_space ps, 2642253fc0cSSteve Wise int snum) 265aac978e1SHaggai Eran { 2664be74b42SHaggai Eran struct idr *idr = cma_pernet_idr(net, ps); 267aac978e1SHaggai Eran 268aac978e1SHaggai Eran idr_remove(idr, snum); 269aac978e1SHaggai Eran } 270aac978e1SHaggai Eran 27168602120SSean Hefty enum { 27268602120SSean Hefty CMA_OPTION_AFONLY, 27368602120SSean Hefty }; 27468602120SSean Hefty 275218a773fSMatan Barak void cma_ref_dev(struct cma_device *cma_dev) 276218a773fSMatan Barak { 277218a773fSMatan Barak atomic_inc(&cma_dev->refcount); 278218a773fSMatan Barak } 279218a773fSMatan Barak 280045959dbSMatan Barak struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter filter, 281045959dbSMatan Barak void *cookie) 282045959dbSMatan Barak { 283045959dbSMatan Barak struct cma_device *cma_dev; 284045959dbSMatan Barak struct cma_device *found_cma_dev = NULL; 285045959dbSMatan Barak 286045959dbSMatan Barak mutex_lock(&lock); 287045959dbSMatan Barak 288045959dbSMatan Barak list_for_each_entry(cma_dev, &dev_list, list) 289045959dbSMatan Barak if (filter(cma_dev->device, cookie)) { 290045959dbSMatan Barak found_cma_dev = cma_dev; 291045959dbSMatan Barak break; 292045959dbSMatan Barak } 293045959dbSMatan Barak 294045959dbSMatan Barak if (found_cma_dev) 295045959dbSMatan Barak cma_ref_dev(found_cma_dev); 296045959dbSMatan Barak mutex_unlock(&lock); 297045959dbSMatan Barak return found_cma_dev; 298045959dbSMatan Barak } 299045959dbSMatan Barak 300045959dbSMatan Barak int cma_get_default_gid_type(struct cma_device *cma_dev, 301045959dbSMatan Barak unsigned int port) 302045959dbSMatan Barak { 30324dc831bSYuval Shaia if (!rdma_is_port_valid(cma_dev->device, port)) 304045959dbSMatan Barak return -EINVAL; 305045959dbSMatan Barak 306045959dbSMatan Barak return cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)]; 307045959dbSMatan Barak } 308045959dbSMatan Barak 309045959dbSMatan Barak int cma_set_default_gid_type(struct cma_device *cma_dev, 310045959dbSMatan Barak unsigned int port, 311045959dbSMatan Barak enum ib_gid_type default_gid_type) 312045959dbSMatan Barak { 313045959dbSMatan Barak unsigned long supported_gids; 314045959dbSMatan Barak 31524dc831bSYuval Shaia if (!rdma_is_port_valid(cma_dev->device, port)) 316045959dbSMatan Barak return -EINVAL; 317045959dbSMatan Barak 318045959dbSMatan Barak supported_gids = roce_gid_type_mask_support(cma_dev->device, port); 319045959dbSMatan Barak 320045959dbSMatan Barak if (!(supported_gids & 1 << default_gid_type)) 321045959dbSMatan Barak return -EINVAL; 322045959dbSMatan Barak 323045959dbSMatan Barak cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)] = 324045959dbSMatan Barak default_gid_type; 325045959dbSMatan Barak 326045959dbSMatan Barak return 0; 327045959dbSMatan Barak } 328045959dbSMatan Barak 32989052d78SMajd Dibbiny int cma_get_default_roce_tos(struct cma_device *cma_dev, unsigned int port) 33089052d78SMajd Dibbiny { 33189052d78SMajd Dibbiny if (!rdma_is_port_valid(cma_dev->device, port)) 33289052d78SMajd Dibbiny return -EINVAL; 33389052d78SMajd Dibbiny 33489052d78SMajd Dibbiny return cma_dev->default_roce_tos[port - rdma_start_port(cma_dev->device)]; 33589052d78SMajd Dibbiny } 33689052d78SMajd Dibbiny 33789052d78SMajd Dibbiny int cma_set_default_roce_tos(struct cma_device *cma_dev, unsigned int port, 33889052d78SMajd Dibbiny u8 default_roce_tos) 33989052d78SMajd Dibbiny { 34089052d78SMajd Dibbiny if (!rdma_is_port_valid(cma_dev->device, port)) 34189052d78SMajd Dibbiny return -EINVAL; 34289052d78SMajd Dibbiny 34389052d78SMajd Dibbiny cma_dev->default_roce_tos[port - rdma_start_port(cma_dev->device)] = 34489052d78SMajd Dibbiny default_roce_tos; 34589052d78SMajd Dibbiny 34689052d78SMajd Dibbiny return 0; 34789052d78SMajd Dibbiny } 348045959dbSMatan Barak struct ib_device *cma_get_ib_dev(struct cma_device *cma_dev) 349045959dbSMatan Barak { 350045959dbSMatan Barak return cma_dev->device; 351045959dbSMatan Barak } 352045959dbSMatan Barak 353e51060f0SSean Hefty /* 354e51060f0SSean Hefty * Device removal can occur at anytime, so we need extra handling to 355e51060f0SSean Hefty * serialize notifying the user of device removal with other callbacks. 356e51060f0SSean Hefty * We do this by disabling removal notification while a callback is in process, 357e51060f0SSean Hefty * and reporting it after the callback completes. 358e51060f0SSean Hefty */ 359e51060f0SSean Hefty 360c8f6a362SSean Hefty struct cma_multicast { 361c8f6a362SSean Hefty struct rdma_id_private *id_priv; 362c8f6a362SSean Hefty union { 363c8f6a362SSean Hefty struct ib_sa_multicast *ib; 364c8f6a362SSean Hefty } multicast; 365c8f6a362SSean Hefty struct list_head list; 366c8f6a362SSean Hefty void *context; 3673f446754SRoland Dreier struct sockaddr_storage addr; 3683c86aa70SEli Cohen struct kref mcref; 369bee3c3c9SMoni Shoua bool igmp_joined; 370ab15c95aSAlex Vesker u8 join_state; 371c8f6a362SSean Hefty }; 372c8f6a362SSean Hefty 373e51060f0SSean Hefty struct cma_work { 374e51060f0SSean Hefty struct work_struct work; 375e51060f0SSean Hefty struct rdma_id_private *id; 376550e5ca7SNir Muchtar enum rdma_cm_state old_state; 377550e5ca7SNir Muchtar enum rdma_cm_state new_state; 378e51060f0SSean Hefty struct rdma_cm_event event; 379e51060f0SSean Hefty }; 380e51060f0SSean Hefty 381dd5bdff8SOr Gerlitz struct cma_ndev_work { 382dd5bdff8SOr Gerlitz struct work_struct work; 383dd5bdff8SOr Gerlitz struct rdma_id_private *id; 384dd5bdff8SOr Gerlitz struct rdma_cm_event event; 385dd5bdff8SOr Gerlitz }; 386dd5bdff8SOr Gerlitz 3873c86aa70SEli Cohen struct iboe_mcast_work { 3883c86aa70SEli Cohen struct work_struct work; 3893c86aa70SEli Cohen struct rdma_id_private *id; 3903c86aa70SEli Cohen struct cma_multicast *mc; 3913c86aa70SEli Cohen }; 3923c86aa70SEli Cohen 393e51060f0SSean Hefty union cma_ip_addr { 394e51060f0SSean Hefty struct in6_addr ip6; 395e51060f0SSean Hefty struct { 3961b90c137SAl Viro __be32 pad[3]; 3971b90c137SAl Viro __be32 addr; 398e51060f0SSean Hefty } ip4; 399e51060f0SSean Hefty }; 400e51060f0SSean Hefty 401e51060f0SSean Hefty struct cma_hdr { 402e51060f0SSean Hefty u8 cma_version; 403e51060f0SSean Hefty u8 ip_version; /* IP version: 7:4 */ 4041b90c137SAl Viro __be16 port; 405e51060f0SSean Hefty union cma_ip_addr src_addr; 406e51060f0SSean Hefty union cma_ip_addr dst_addr; 407e51060f0SSean Hefty }; 408e51060f0SSean Hefty 409e51060f0SSean Hefty #define CMA_VERSION 0x00 410e51060f0SSean Hefty 4114c21b5bcSHaggai Eran struct cma_req_info { 4122918c1a9SParav Pandit struct sockaddr_storage listen_addr_storage; 4132918c1a9SParav Pandit struct sockaddr_storage src_addr_storage; 4144c21b5bcSHaggai Eran struct ib_device *device; 4154c21b5bcSHaggai Eran int port; 4164c21b5bcSHaggai Eran union ib_gid local_gid; 4174c21b5bcSHaggai Eran __be64 service_id; 4184c21b5bcSHaggai Eran u16 pkey; 4194c21b5bcSHaggai Eran bool has_gid:1; 4204c21b5bcSHaggai Eran }; 4214c21b5bcSHaggai Eran 422550e5ca7SNir Muchtar static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp) 423e51060f0SSean Hefty { 424e51060f0SSean Hefty unsigned long flags; 425e51060f0SSean Hefty int ret; 426e51060f0SSean Hefty 427e51060f0SSean Hefty spin_lock_irqsave(&id_priv->lock, flags); 428e51060f0SSean Hefty ret = (id_priv->state == comp); 429e51060f0SSean Hefty spin_unlock_irqrestore(&id_priv->lock, flags); 430e51060f0SSean Hefty return ret; 431e51060f0SSean Hefty } 432e51060f0SSean Hefty 433e51060f0SSean Hefty static int cma_comp_exch(struct rdma_id_private *id_priv, 434550e5ca7SNir Muchtar enum rdma_cm_state comp, enum rdma_cm_state exch) 435e51060f0SSean Hefty { 436e51060f0SSean Hefty unsigned long flags; 437e51060f0SSean Hefty int ret; 438e51060f0SSean Hefty 439e51060f0SSean Hefty spin_lock_irqsave(&id_priv->lock, flags); 440e51060f0SSean Hefty if ((ret = (id_priv->state == comp))) 441e51060f0SSean Hefty id_priv->state = exch; 442e51060f0SSean Hefty spin_unlock_irqrestore(&id_priv->lock, flags); 443e51060f0SSean Hefty return ret; 444e51060f0SSean Hefty } 445e51060f0SSean Hefty 446550e5ca7SNir Muchtar static enum rdma_cm_state cma_exch(struct rdma_id_private *id_priv, 447550e5ca7SNir Muchtar enum rdma_cm_state exch) 448e51060f0SSean Hefty { 449e51060f0SSean Hefty unsigned long flags; 450550e5ca7SNir Muchtar enum rdma_cm_state old; 451e51060f0SSean Hefty 452e51060f0SSean Hefty spin_lock_irqsave(&id_priv->lock, flags); 453e51060f0SSean Hefty old = id_priv->state; 454e51060f0SSean Hefty id_priv->state = exch; 455e51060f0SSean Hefty spin_unlock_irqrestore(&id_priv->lock, flags); 456e51060f0SSean Hefty return old; 457e51060f0SSean Hefty } 458e51060f0SSean Hefty 4594c21b5bcSHaggai Eran static inline u8 cma_get_ip_ver(const struct cma_hdr *hdr) 460e51060f0SSean Hefty { 461e51060f0SSean Hefty return hdr->ip_version >> 4; 462e51060f0SSean Hefty } 463e51060f0SSean Hefty 464e51060f0SSean Hefty static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) 465e51060f0SSean Hefty { 466e51060f0SSean Hefty hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); 467e51060f0SSean Hefty } 468e51060f0SSean Hefty 469bee3c3c9SMoni Shoua static int cma_igmp_send(struct net_device *ndev, union ib_gid *mgid, bool join) 470bee3c3c9SMoni Shoua { 471bee3c3c9SMoni Shoua struct in_device *in_dev = NULL; 472bee3c3c9SMoni Shoua 473bee3c3c9SMoni Shoua if (ndev) { 474bee3c3c9SMoni Shoua rtnl_lock(); 475bee3c3c9SMoni Shoua in_dev = __in_dev_get_rtnl(ndev); 476bee3c3c9SMoni Shoua if (in_dev) { 477bee3c3c9SMoni Shoua if (join) 478bee3c3c9SMoni Shoua ip_mc_inc_group(in_dev, 479bee3c3c9SMoni Shoua *(__be32 *)(mgid->raw + 12)); 480bee3c3c9SMoni Shoua else 481bee3c3c9SMoni Shoua ip_mc_dec_group(in_dev, 482bee3c3c9SMoni Shoua *(__be32 *)(mgid->raw + 12)); 483bee3c3c9SMoni Shoua } 484bee3c3c9SMoni Shoua rtnl_unlock(); 485bee3c3c9SMoni Shoua } 486bee3c3c9SMoni Shoua return (in_dev) ? 0 : -ENODEV; 487bee3c3c9SMoni Shoua } 488bee3c3c9SMoni Shoua 489045959dbSMatan Barak static void _cma_attach_to_dev(struct rdma_id_private *id_priv, 490e51060f0SSean Hefty struct cma_device *cma_dev) 491e51060f0SSean Hefty { 492218a773fSMatan Barak cma_ref_dev(cma_dev); 493e51060f0SSean Hefty id_priv->cma_dev = cma_dev; 494045959dbSMatan Barak id_priv->gid_type = 0; 495e51060f0SSean Hefty id_priv->id.device = cma_dev->device; 4963c86aa70SEli Cohen id_priv->id.route.addr.dev_addr.transport = 4973c86aa70SEli Cohen rdma_node_get_transport(cma_dev->device->node_type); 498e51060f0SSean Hefty list_add_tail(&id_priv->list, &cma_dev->id_list); 49900313983SSteve Wise id_priv->res.type = RDMA_RESTRACK_CM_ID; 50000313983SSteve Wise rdma_restrack_add(&id_priv->res); 501e51060f0SSean Hefty } 502e51060f0SSean Hefty 503045959dbSMatan Barak static void cma_attach_to_dev(struct rdma_id_private *id_priv, 504045959dbSMatan Barak struct cma_device *cma_dev) 505045959dbSMatan Barak { 506045959dbSMatan Barak _cma_attach_to_dev(id_priv, cma_dev); 507045959dbSMatan Barak id_priv->gid_type = 508045959dbSMatan Barak cma_dev->default_gid_type[id_priv->id.port_num - 509045959dbSMatan Barak rdma_start_port(cma_dev->device)]; 510045959dbSMatan Barak } 511045959dbSMatan Barak 512218a773fSMatan Barak void cma_deref_dev(struct cma_device *cma_dev) 513e51060f0SSean Hefty { 514e51060f0SSean Hefty if (atomic_dec_and_test(&cma_dev->refcount)) 515e51060f0SSean Hefty complete(&cma_dev->comp); 516e51060f0SSean Hefty } 517e51060f0SSean Hefty 5183c86aa70SEli Cohen static inline void release_mc(struct kref *kref) 5193c86aa70SEli Cohen { 5203c86aa70SEli Cohen struct cma_multicast *mc = container_of(kref, struct cma_multicast, mcref); 5213c86aa70SEli Cohen 5223c86aa70SEli Cohen kfree(mc->multicast.ib); 5233c86aa70SEli Cohen kfree(mc); 5243c86aa70SEli Cohen } 5253c86aa70SEli Cohen 526a396d43aSSean Hefty static void cma_release_dev(struct rdma_id_private *id_priv) 527e51060f0SSean Hefty { 528a396d43aSSean Hefty mutex_lock(&lock); 529e51060f0SSean Hefty list_del(&id_priv->list); 530e51060f0SSean Hefty cma_deref_dev(id_priv->cma_dev); 531e51060f0SSean Hefty id_priv->cma_dev = NULL; 532a396d43aSSean Hefty mutex_unlock(&lock); 533e51060f0SSean Hefty } 534e51060f0SSean Hefty 535f4753834SSean Hefty static inline struct sockaddr *cma_src_addr(struct rdma_id_private *id_priv) 536f4753834SSean Hefty { 537f4753834SSean Hefty return (struct sockaddr *) &id_priv->id.route.addr.src_addr; 538f4753834SSean Hefty } 539f4753834SSean Hefty 540f4753834SSean Hefty static inline struct sockaddr *cma_dst_addr(struct rdma_id_private *id_priv) 541f4753834SSean Hefty { 542f4753834SSean Hefty return (struct sockaddr *) &id_priv->id.route.addr.dst_addr; 543f4753834SSean Hefty } 544f4753834SSean Hefty 545f4753834SSean Hefty static inline unsigned short cma_family(struct rdma_id_private *id_priv) 546f4753834SSean Hefty { 547f4753834SSean Hefty return id_priv->id.route.addr.src_addr.ss_family; 548f4753834SSean Hefty } 549f4753834SSean Hefty 5505c438135SSean Hefty static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey) 551c8f6a362SSean Hefty { 552c8f6a362SSean Hefty struct ib_sa_mcmember_rec rec; 553c8f6a362SSean Hefty int ret = 0; 554c8f6a362SSean Hefty 5555c438135SSean Hefty if (id_priv->qkey) { 5565c438135SSean Hefty if (qkey && id_priv->qkey != qkey) 5575c438135SSean Hefty return -EINVAL; 558d2ca39f2SYossi Etigin return 0; 5595c438135SSean Hefty } 5605c438135SSean Hefty 5615c438135SSean Hefty if (qkey) { 5625c438135SSean Hefty id_priv->qkey = qkey; 5635c438135SSean Hefty return 0; 5645c438135SSean Hefty } 565d2ca39f2SYossi Etigin 566d2ca39f2SYossi Etigin switch (id_priv->id.ps) { 567c8f6a362SSean Hefty case RDMA_PS_UDP: 5685c438135SSean Hefty case RDMA_PS_IB: 569d2ca39f2SYossi Etigin id_priv->qkey = RDMA_UDP_QKEY; 570c8f6a362SSean Hefty break; 571c8f6a362SSean Hefty case RDMA_PS_IPOIB: 572d2ca39f2SYossi Etigin ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); 573d2ca39f2SYossi Etigin ret = ib_sa_get_mcmember_rec(id_priv->id.device, 574d2ca39f2SYossi Etigin id_priv->id.port_num, &rec.mgid, 575d2ca39f2SYossi Etigin &rec); 576d2ca39f2SYossi Etigin if (!ret) 577d2ca39f2SYossi Etigin id_priv->qkey = be32_to_cpu(rec.qkey); 578c8f6a362SSean Hefty break; 579c8f6a362SSean Hefty default: 580c8f6a362SSean Hefty break; 581c8f6a362SSean Hefty } 582c8f6a362SSean Hefty return ret; 583c8f6a362SSean Hefty } 584c8f6a362SSean Hefty 585680f920aSSean Hefty static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr) 586680f920aSSean Hefty { 587680f920aSSean Hefty dev_addr->dev_type = ARPHRD_INFINIBAND; 588680f920aSSean Hefty rdma_addr_set_sgid(dev_addr, (union ib_gid *) &sib->sib_addr); 589680f920aSSean Hefty ib_addr_set_pkey(dev_addr, ntohs(sib->sib_pkey)); 590680f920aSSean Hefty } 591680f920aSSean Hefty 592680f920aSSean Hefty static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) 593680f920aSSean Hefty { 594680f920aSSean Hefty int ret; 595680f920aSSean Hefty 596680f920aSSean Hefty if (addr->sa_family != AF_IB) { 597575c7e58SParav Pandit ret = rdma_translate_ip(addr, dev_addr); 598680f920aSSean Hefty } else { 599680f920aSSean Hefty cma_translate_ib((struct sockaddr_ib *) addr, dev_addr); 600680f920aSSean Hefty ret = 0; 601680f920aSSean Hefty } 602680f920aSSean Hefty 603680f920aSSean Hefty return ret; 604680f920aSSean Hefty } 605680f920aSSean Hefty 6067c11147dSMichael Wang static inline int cma_validate_port(struct ib_device *device, u8 port, 607045959dbSMatan Barak enum ib_gid_type gid_type, 6082493a57bSParav Pandit union ib_gid *gid, 6092493a57bSParav Pandit struct rdma_id_private *id_priv) 6107c11147dSMichael Wang { 6112493a57bSParav Pandit struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; 6122493a57bSParav Pandit int bound_if_index = dev_addr->bound_dev_if; 6132493a57bSParav Pandit int dev_type = dev_addr->dev_type; 614abae1b71SMatan Barak struct net_device *ndev = NULL; 6152493a57bSParav Pandit int ret = -ENODEV; 6167c11147dSMichael Wang 6177c11147dSMichael Wang if ((dev_type == ARPHRD_INFINIBAND) && !rdma_protocol_ib(device, port)) 6187c11147dSMichael Wang return ret; 6197c11147dSMichael Wang 6207c11147dSMichael Wang if ((dev_type != ARPHRD_INFINIBAND) && rdma_protocol_ib(device, port)) 6217c11147dSMichael Wang return ret; 6227c11147dSMichael Wang 62300db63c1SParav Pandit if (dev_type == ARPHRD_ETHER && rdma_protocol_roce(device, port)) { 62466c74d74SParav Pandit ndev = dev_get_by_index(dev_addr->net, bound_if_index); 62500db63c1SParav Pandit if (!ndev) 62600db63c1SParav Pandit return ret; 62700db63c1SParav Pandit } else { 628045959dbSMatan Barak gid_type = IB_GID_TYPE_IB; 62900db63c1SParav Pandit } 630abae1b71SMatan Barak 631045959dbSMatan Barak ret = ib_find_cached_gid_by_port(device, gid, gid_type, port, 632b39ffa1dSMatan Barak ndev, NULL); 633abae1b71SMatan Barak 634abae1b71SMatan Barak if (ndev) 635abae1b71SMatan Barak dev_put(ndev); 6367c11147dSMichael Wang 6377c11147dSMichael Wang return ret; 6387c11147dSMichael Wang } 6397c11147dSMichael Wang 640be9130ccSDoug Ledford static int cma_acquire_dev(struct rdma_id_private *id_priv, 641be9130ccSDoug Ledford struct rdma_id_private *listen_id_priv) 642e51060f0SSean Hefty { 643c8f6a362SSean Hefty struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; 644e51060f0SSean Hefty struct cma_device *cma_dev; 6457c11147dSMichael Wang union ib_gid gid, iboe_gid, *gidp; 646e51060f0SSean Hefty int ret = -ENODEV; 6477c11147dSMichael Wang u8 port; 648e51060f0SSean Hefty 6497c11147dSMichael Wang if (dev_addr->dev_type != ARPHRD_INFINIBAND && 6502efdd6a0SMoni Shoua id_priv->id.ps == RDMA_PS_IPOIB) 6512efdd6a0SMoni Shoua return -EINVAL; 6522efdd6a0SMoni Shoua 653a396d43aSSean Hefty mutex_lock(&lock); 6547b85627bSMoni Shoua rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, 6557b85627bSMoni Shoua &iboe_gid); 6567b85627bSMoni Shoua 6573c86aa70SEli Cohen memcpy(&gid, dev_addr->src_dev_addr + 6583c86aa70SEli Cohen rdma_addr_gid_offset(dev_addr), sizeof gid); 6597c11147dSMichael Wang 6607c11147dSMichael Wang if (listen_id_priv) { 661be9130ccSDoug Ledford cma_dev = listen_id_priv->cma_dev; 662be9130ccSDoug Ledford port = listen_id_priv->id.port_num; 6635d9fb044SIra Weiny gidp = rdma_protocol_roce(cma_dev->device, port) ? 6647c11147dSMichael Wang &iboe_gid : &gid; 665be9130ccSDoug Ledford 666045959dbSMatan Barak ret = cma_validate_port(cma_dev->device, port, 667045959dbSMatan Barak rdma_protocol_ib(cma_dev->device, port) ? 668045959dbSMatan Barak IB_GID_TYPE_IB : 669045959dbSMatan Barak listen_id_priv->gid_type, gidp, 6702493a57bSParav Pandit id_priv); 6717c11147dSMichael Wang if (!ret) { 6727c11147dSMichael Wang id_priv->id.port_num = port; 673be9130ccSDoug Ledford goto out; 674be9130ccSDoug Ledford } 675be9130ccSDoug Ledford } 6767c11147dSMichael Wang 677e51060f0SSean Hefty list_for_each_entry(cma_dev, &dev_list, list) { 6783c86aa70SEli Cohen for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { 679be9130ccSDoug Ledford if (listen_id_priv && 680be9130ccSDoug Ledford listen_id_priv->cma_dev == cma_dev && 681be9130ccSDoug Ledford listen_id_priv->id.port_num == port) 682be9130ccSDoug Ledford continue; 6833c86aa70SEli Cohen 6845d9fb044SIra Weiny gidp = rdma_protocol_roce(cma_dev->device, port) ? 6857c11147dSMichael Wang &iboe_gid : &gid; 6867c11147dSMichael Wang 687045959dbSMatan Barak ret = cma_validate_port(cma_dev->device, port, 688045959dbSMatan Barak rdma_protocol_ib(cma_dev->device, port) ? 689045959dbSMatan Barak IB_GID_TYPE_IB : 690045959dbSMatan Barak cma_dev->default_gid_type[port - 1], 6912493a57bSParav Pandit gidp, id_priv); 6927c11147dSMichael Wang if (!ret) { 6937c11147dSMichael Wang id_priv->id.port_num = port; 6943c86aa70SEli Cohen goto out; 69563f05be2Sshefty } 696e51060f0SSean Hefty } 697e51060f0SSean Hefty } 6983c86aa70SEli Cohen 6993c86aa70SEli Cohen out: 7003c86aa70SEli Cohen if (!ret) 7013c86aa70SEli Cohen cma_attach_to_dev(id_priv, cma_dev); 7023c86aa70SEli Cohen 703a396d43aSSean Hefty mutex_unlock(&lock); 704e51060f0SSean Hefty return ret; 705e51060f0SSean Hefty } 706e51060f0SSean Hefty 707f17df3b0SSean Hefty /* 708f17df3b0SSean Hefty * Select the source IB device and address to reach the destination IB address. 709f17df3b0SSean Hefty */ 710f17df3b0SSean Hefty static int cma_resolve_ib_dev(struct rdma_id_private *id_priv) 711f17df3b0SSean Hefty { 712f17df3b0SSean Hefty struct cma_device *cma_dev, *cur_dev; 713f17df3b0SSean Hefty struct sockaddr_ib *addr; 714f17df3b0SSean Hefty union ib_gid gid, sgid, *dgid; 715f17df3b0SSean Hefty u16 pkey, index; 7168fb488d7SPaul Bolle u8 p; 71793b1f29dSJack Wang enum ib_port_state port_state; 718f17df3b0SSean Hefty int i; 719f17df3b0SSean Hefty 720f17df3b0SSean Hefty cma_dev = NULL; 721f17df3b0SSean Hefty addr = (struct sockaddr_ib *) cma_dst_addr(id_priv); 722f17df3b0SSean Hefty dgid = (union ib_gid *) &addr->sib_addr; 723f17df3b0SSean Hefty pkey = ntohs(addr->sib_pkey); 724f17df3b0SSean Hefty 725f17df3b0SSean Hefty list_for_each_entry(cur_dev, &dev_list, list) { 726fef60902SMichael Wang for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { 72730a74ef4SMichael Wang if (!rdma_cap_af_ib(cur_dev->device, p)) 728f17df3b0SSean Hefty continue; 729f17df3b0SSean Hefty 730f17df3b0SSean Hefty if (ib_find_cached_pkey(cur_dev->device, p, pkey, &index)) 731f17df3b0SSean Hefty continue; 732f17df3b0SSean Hefty 73393b1f29dSJack Wang if (ib_get_cached_port_state(cur_dev->device, p, &port_state)) 73493b1f29dSJack Wang continue; 7351dfce294SParav Pandit for (i = 0; !rdma_query_gid(cur_dev->device, 7361dfce294SParav Pandit p, i, &gid); 73755ee3ab2SMatan Barak i++) { 738f17df3b0SSean Hefty if (!memcmp(&gid, dgid, sizeof(gid))) { 739f17df3b0SSean Hefty cma_dev = cur_dev; 740f17df3b0SSean Hefty sgid = gid; 7418fb488d7SPaul Bolle id_priv->id.port_num = p; 742f17df3b0SSean Hefty goto found; 743f17df3b0SSean Hefty } 744f17df3b0SSean Hefty 745f17df3b0SSean Hefty if (!cma_dev && (gid.global.subnet_prefix == 74693b1f29dSJack Wang dgid->global.subnet_prefix) && 74793b1f29dSJack Wang port_state == IB_PORT_ACTIVE) { 748f17df3b0SSean Hefty cma_dev = cur_dev; 749f17df3b0SSean Hefty sgid = gid; 7508fb488d7SPaul Bolle id_priv->id.port_num = p; 751f17df3b0SSean Hefty } 752f17df3b0SSean Hefty } 753f17df3b0SSean Hefty } 754f17df3b0SSean Hefty } 755f17df3b0SSean Hefty 756f17df3b0SSean Hefty if (!cma_dev) 757f17df3b0SSean Hefty return -ENODEV; 758f17df3b0SSean Hefty 759f17df3b0SSean Hefty found: 760f17df3b0SSean Hefty cma_attach_to_dev(id_priv, cma_dev); 761f17df3b0SSean Hefty addr = (struct sockaddr_ib *) cma_src_addr(id_priv); 762f17df3b0SSean Hefty memcpy(&addr->sib_addr, &sgid, sizeof sgid); 763f17df3b0SSean Hefty cma_translate_ib(addr, &id_priv->id.route.addr.dev_addr); 764f17df3b0SSean Hefty return 0; 765f17df3b0SSean Hefty } 766f17df3b0SSean Hefty 767e51060f0SSean Hefty static void cma_deref_id(struct rdma_id_private *id_priv) 768e51060f0SSean Hefty { 769e51060f0SSean Hefty if (atomic_dec_and_test(&id_priv->refcount)) 770e51060f0SSean Hefty complete(&id_priv->comp); 771e51060f0SSean Hefty } 772e51060f0SSean Hefty 77300313983SSteve Wise struct rdma_cm_id *__rdma_create_id(struct net *net, 774fa20105eSGuy Shapiro rdma_cm_event_handler event_handler, 7752253fc0cSSteve Wise void *context, enum rdma_ucm_port_space ps, 77600313983SSteve Wise enum ib_qp_type qp_type, const char *caller) 777e51060f0SSean Hefty { 778e51060f0SSean Hefty struct rdma_id_private *id_priv; 779e51060f0SSean Hefty 780e51060f0SSean Hefty id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); 781e51060f0SSean Hefty if (!id_priv) 782e51060f0SSean Hefty return ERR_PTR(-ENOMEM); 783e51060f0SSean Hefty 78400313983SSteve Wise if (caller) 78500313983SSteve Wise id_priv->res.kern_name = caller; 78600313983SSteve Wise else 78700313983SSteve Wise rdma_restrack_set_task(&id_priv->res, current); 788550e5ca7SNir Muchtar id_priv->state = RDMA_CM_IDLE; 789e51060f0SSean Hefty id_priv->id.context = context; 790e51060f0SSean Hefty id_priv->id.event_handler = event_handler; 791e51060f0SSean Hefty id_priv->id.ps = ps; 792b26f9b99SSean Hefty id_priv->id.qp_type = qp_type; 79389052d78SMajd Dibbiny id_priv->tos_set = false; 794e51060f0SSean Hefty spin_lock_init(&id_priv->lock); 795c5483388SSean Hefty mutex_init(&id_priv->qp_mutex); 796e51060f0SSean Hefty init_completion(&id_priv->comp); 797e51060f0SSean Hefty atomic_set(&id_priv->refcount, 1); 798de910bd9SOr Gerlitz mutex_init(&id_priv->handler_mutex); 799e51060f0SSean Hefty INIT_LIST_HEAD(&id_priv->listen_list); 800c8f6a362SSean Hefty INIT_LIST_HEAD(&id_priv->mc_list); 801e51060f0SSean Hefty get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); 802fa20105eSGuy Shapiro id_priv->id.route.addr.dev_addr.net = get_net(net); 80323a9cd2aSMoni Shoua id_priv->seq_num &= 0x00ffffff; 804e51060f0SSean Hefty 805e51060f0SSean Hefty return &id_priv->id; 806e51060f0SSean Hefty } 80700313983SSteve Wise EXPORT_SYMBOL(__rdma_create_id); 808e51060f0SSean Hefty 809c8f6a362SSean Hefty static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) 810e51060f0SSean Hefty { 811e51060f0SSean Hefty struct ib_qp_attr qp_attr; 812c8f6a362SSean Hefty int qp_attr_mask, ret; 813e51060f0SSean Hefty 814c8f6a362SSean Hefty qp_attr.qp_state = IB_QPS_INIT; 815c8f6a362SSean Hefty ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); 816e51060f0SSean Hefty if (ret) 817e51060f0SSean Hefty return ret; 818e51060f0SSean Hefty 819c8f6a362SSean Hefty ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); 820c8f6a362SSean Hefty if (ret) 821c8f6a362SSean Hefty return ret; 822c8f6a362SSean Hefty 823c8f6a362SSean Hefty qp_attr.qp_state = IB_QPS_RTR; 824c8f6a362SSean Hefty ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); 825c8f6a362SSean Hefty if (ret) 826c8f6a362SSean Hefty return ret; 827c8f6a362SSean Hefty 828c8f6a362SSean Hefty qp_attr.qp_state = IB_QPS_RTS; 829c8f6a362SSean Hefty qp_attr.sq_psn = 0; 830c8f6a362SSean Hefty ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); 831c8f6a362SSean Hefty 832c8f6a362SSean Hefty return ret; 833e51060f0SSean Hefty } 834e51060f0SSean Hefty 835c8f6a362SSean Hefty static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) 83607ebafbaSTom Tucker { 83707ebafbaSTom Tucker struct ib_qp_attr qp_attr; 838c8f6a362SSean Hefty int qp_attr_mask, ret; 83907ebafbaSTom Tucker 84007ebafbaSTom Tucker qp_attr.qp_state = IB_QPS_INIT; 841c8f6a362SSean Hefty ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); 842c8f6a362SSean Hefty if (ret) 843c8f6a362SSean Hefty return ret; 84407ebafbaSTom Tucker 845c8f6a362SSean Hefty return ib_modify_qp(qp, &qp_attr, qp_attr_mask); 84607ebafbaSTom Tucker } 84707ebafbaSTom Tucker 848e51060f0SSean Hefty int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, 849e51060f0SSean Hefty struct ib_qp_init_attr *qp_init_attr) 850e51060f0SSean Hefty { 851e51060f0SSean Hefty struct rdma_id_private *id_priv; 852e51060f0SSean Hefty struct ib_qp *qp; 853e51060f0SSean Hefty int ret; 854e51060f0SSean Hefty 855e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 856e51060f0SSean Hefty if (id->device != pd->device) 857e51060f0SSean Hefty return -EINVAL; 858e51060f0SSean Hefty 8590691a286SChristoph Hellwig qp_init_attr->port_num = id->port_num; 860e51060f0SSean Hefty qp = ib_create_qp(pd, qp_init_attr); 861e51060f0SSean Hefty if (IS_ERR(qp)) 862e51060f0SSean Hefty return PTR_ERR(qp); 863e51060f0SSean Hefty 864b26f9b99SSean Hefty if (id->qp_type == IB_QPT_UD) 865c8f6a362SSean Hefty ret = cma_init_ud_qp(id_priv, qp); 866c8f6a362SSean Hefty else 867c8f6a362SSean Hefty ret = cma_init_conn_qp(id_priv, qp); 868e51060f0SSean Hefty if (ret) 869e51060f0SSean Hefty goto err; 870e51060f0SSean Hefty 871e51060f0SSean Hefty id->qp = qp; 872e51060f0SSean Hefty id_priv->qp_num = qp->qp_num; 873e51060f0SSean Hefty id_priv->srq = (qp->srq != NULL); 874e51060f0SSean Hefty return 0; 875e51060f0SSean Hefty err: 876e51060f0SSean Hefty ib_destroy_qp(qp); 877e51060f0SSean Hefty return ret; 878e51060f0SSean Hefty } 879e51060f0SSean Hefty EXPORT_SYMBOL(rdma_create_qp); 880e51060f0SSean Hefty 881e51060f0SSean Hefty void rdma_destroy_qp(struct rdma_cm_id *id) 882e51060f0SSean Hefty { 883c5483388SSean Hefty struct rdma_id_private *id_priv; 884c5483388SSean Hefty 885c5483388SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 886c5483388SSean Hefty mutex_lock(&id_priv->qp_mutex); 887c5483388SSean Hefty ib_destroy_qp(id_priv->id.qp); 888c5483388SSean Hefty id_priv->id.qp = NULL; 889c5483388SSean Hefty mutex_unlock(&id_priv->qp_mutex); 890e51060f0SSean Hefty } 891e51060f0SSean Hefty EXPORT_SYMBOL(rdma_destroy_qp); 892e51060f0SSean Hefty 8935851bb89SSean Hefty static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, 8945851bb89SSean Hefty struct rdma_conn_param *conn_param) 895e51060f0SSean Hefty { 896e51060f0SSean Hefty struct ib_qp_attr qp_attr; 897e51060f0SSean Hefty int qp_attr_mask, ret; 898e51060f0SSean Hefty 899c5483388SSean Hefty mutex_lock(&id_priv->qp_mutex); 900c5483388SSean Hefty if (!id_priv->id.qp) { 901c5483388SSean Hefty ret = 0; 902c5483388SSean Hefty goto out; 903c5483388SSean Hefty } 904e51060f0SSean Hefty 905e51060f0SSean Hefty /* Need to update QP attributes from default values. */ 906e51060f0SSean Hefty qp_attr.qp_state = IB_QPS_INIT; 907c5483388SSean Hefty ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); 908e51060f0SSean Hefty if (ret) 909c5483388SSean Hefty goto out; 910e51060f0SSean Hefty 911c5483388SSean Hefty ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); 912e51060f0SSean Hefty if (ret) 913c5483388SSean Hefty goto out; 914e51060f0SSean Hefty 915e51060f0SSean Hefty qp_attr.qp_state = IB_QPS_RTR; 916c5483388SSean Hefty ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); 917e51060f0SSean Hefty if (ret) 918c5483388SSean Hefty goto out; 919e51060f0SSean Hefty 920fef60902SMichael Wang BUG_ON(id_priv->cma_dev->device != id_priv->id.device); 921fef60902SMichael Wang 9225851bb89SSean Hefty if (conn_param) 9235851bb89SSean Hefty qp_attr.max_dest_rd_atomic = conn_param->responder_resources; 924c5483388SSean Hefty ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); 925c5483388SSean Hefty out: 926c5483388SSean Hefty mutex_unlock(&id_priv->qp_mutex); 927c5483388SSean Hefty return ret; 928e51060f0SSean Hefty } 929e51060f0SSean Hefty 9305851bb89SSean Hefty static int cma_modify_qp_rts(struct rdma_id_private *id_priv, 9315851bb89SSean Hefty struct rdma_conn_param *conn_param) 932e51060f0SSean Hefty { 933e51060f0SSean Hefty struct ib_qp_attr qp_attr; 934e51060f0SSean Hefty int qp_attr_mask, ret; 935e51060f0SSean Hefty 936c5483388SSean Hefty mutex_lock(&id_priv->qp_mutex); 937c5483388SSean Hefty if (!id_priv->id.qp) { 938c5483388SSean Hefty ret = 0; 939c5483388SSean Hefty goto out; 940e51060f0SSean Hefty } 941e51060f0SSean Hefty 942c5483388SSean Hefty qp_attr.qp_state = IB_QPS_RTS; 943c5483388SSean Hefty ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); 944c5483388SSean Hefty if (ret) 945c5483388SSean Hefty goto out; 946c5483388SSean Hefty 9475851bb89SSean Hefty if (conn_param) 9485851bb89SSean Hefty qp_attr.max_rd_atomic = conn_param->initiator_depth; 949c5483388SSean Hefty ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); 950c5483388SSean Hefty out: 951c5483388SSean Hefty mutex_unlock(&id_priv->qp_mutex); 952c5483388SSean Hefty return ret; 953c5483388SSean Hefty } 954c5483388SSean Hefty 955c5483388SSean Hefty static int cma_modify_qp_err(struct rdma_id_private *id_priv) 956e51060f0SSean Hefty { 957e51060f0SSean Hefty struct ib_qp_attr qp_attr; 958c5483388SSean Hefty int ret; 959e51060f0SSean Hefty 960c5483388SSean Hefty mutex_lock(&id_priv->qp_mutex); 961c5483388SSean Hefty if (!id_priv->id.qp) { 962c5483388SSean Hefty ret = 0; 963c5483388SSean Hefty goto out; 964c5483388SSean Hefty } 965e51060f0SSean Hefty 966e51060f0SSean Hefty qp_attr.qp_state = IB_QPS_ERR; 967c5483388SSean Hefty ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); 968c5483388SSean Hefty out: 969c5483388SSean Hefty mutex_unlock(&id_priv->qp_mutex); 970c5483388SSean Hefty return ret; 971e51060f0SSean Hefty } 972e51060f0SSean Hefty 973c8f6a362SSean Hefty static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, 974c8f6a362SSean Hefty struct ib_qp_attr *qp_attr, int *qp_attr_mask) 975c8f6a362SSean Hefty { 976c8f6a362SSean Hefty struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; 977c8f6a362SSean Hefty int ret; 9783c86aa70SEli Cohen u16 pkey; 9793c86aa70SEli Cohen 980227128fcSMichael Wang if (rdma_cap_eth_ah(id_priv->id.device, id_priv->id.port_num)) 9813c86aa70SEli Cohen pkey = 0xffff; 982fef60902SMichael Wang else 983fef60902SMichael Wang pkey = ib_addr_get_pkey(dev_addr); 984c8f6a362SSean Hefty 985c8f6a362SSean Hefty ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, 9863c86aa70SEli Cohen pkey, &qp_attr->pkey_index); 987c8f6a362SSean Hefty if (ret) 988c8f6a362SSean Hefty return ret; 989c8f6a362SSean Hefty 990c8f6a362SSean Hefty qp_attr->port_num = id_priv->id.port_num; 991c8f6a362SSean Hefty *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; 992c8f6a362SSean Hefty 993b26f9b99SSean Hefty if (id_priv->id.qp_type == IB_QPT_UD) { 9945c438135SSean Hefty ret = cma_set_qkey(id_priv, 0); 995d2ca39f2SYossi Etigin if (ret) 996d2ca39f2SYossi Etigin return ret; 997d2ca39f2SYossi Etigin 998c8f6a362SSean Hefty qp_attr->qkey = id_priv->qkey; 999c8f6a362SSean Hefty *qp_attr_mask |= IB_QP_QKEY; 1000c8f6a362SSean Hefty } else { 1001c8f6a362SSean Hefty qp_attr->qp_access_flags = 0; 1002c8f6a362SSean Hefty *qp_attr_mask |= IB_QP_ACCESS_FLAGS; 1003c8f6a362SSean Hefty } 1004c8f6a362SSean Hefty return 0; 1005c8f6a362SSean Hefty } 1006c8f6a362SSean Hefty 1007e51060f0SSean Hefty int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, 1008e51060f0SSean Hefty int *qp_attr_mask) 1009e51060f0SSean Hefty { 1010e51060f0SSean Hefty struct rdma_id_private *id_priv; 1011c8f6a362SSean Hefty int ret = 0; 1012e51060f0SSean Hefty 1013e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 101472219ceaSMichael Wang if (rdma_cap_ib_cm(id->device, id->port_num)) { 1015b26f9b99SSean Hefty if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD)) 1016c8f6a362SSean Hefty ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); 1017c8f6a362SSean Hefty else 1018e51060f0SSean Hefty ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, 1019e51060f0SSean Hefty qp_attr_mask); 1020dd5f03beSMatan Barak 1021e51060f0SSean Hefty if (qp_attr->qp_state == IB_QPS_RTR) 1022e51060f0SSean Hefty qp_attr->rq_psn = id_priv->seq_num; 102304215330SMichael Wang } else if (rdma_cap_iw_cm(id->device, id->port_num)) { 1024c8f6a362SSean Hefty if (!id_priv->cm_id.iw) { 10258f076531SDotan Barak qp_attr->qp_access_flags = 0; 1026c8f6a362SSean Hefty *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; 1027c8f6a362SSean Hefty } else 102807ebafbaSTom Tucker ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, 102907ebafbaSTom Tucker qp_attr_mask); 1030a62ab66bSIsmail, Mustafa qp_attr->port_num = id_priv->id.port_num; 1031a62ab66bSIsmail, Mustafa *qp_attr_mask |= IB_QP_PORT; 103221655afcSMichael Wang } else 1033e51060f0SSean Hefty ret = -ENOSYS; 1034e51060f0SSean Hefty 1035e51060f0SSean Hefty return ret; 1036e51060f0SSean Hefty } 1037e51060f0SSean Hefty EXPORT_SYMBOL(rdma_init_qp_attr); 1038e51060f0SSean Hefty 1039e51060f0SSean Hefty static inline int cma_zero_addr(struct sockaddr *addr) 1040e51060f0SSean Hefty { 10412e2d190cSSean Hefty switch (addr->sa_family) { 10422e2d190cSSean Hefty case AF_INET: 10432e2d190cSSean Hefty return ipv4_is_zeronet(((struct sockaddr_in *)addr)->sin_addr.s_addr); 10442e2d190cSSean Hefty case AF_INET6: 10452e2d190cSSean Hefty return ipv6_addr_any(&((struct sockaddr_in6 *) addr)->sin6_addr); 10462e2d190cSSean Hefty case AF_IB: 10472e2d190cSSean Hefty return ib_addr_any(&((struct sockaddr_ib *) addr)->sib_addr); 10482e2d190cSSean Hefty default: 10492e2d190cSSean Hefty return 0; 1050e51060f0SSean Hefty } 1051e51060f0SSean Hefty } 1052e51060f0SSean Hefty 1053e51060f0SSean Hefty static inline int cma_loopback_addr(struct sockaddr *addr) 1054e51060f0SSean Hefty { 10552e2d190cSSean Hefty switch (addr->sa_family) { 10562e2d190cSSean Hefty case AF_INET: 10572e2d190cSSean Hefty return ipv4_is_loopback(((struct sockaddr_in *) addr)->sin_addr.s_addr); 10582e2d190cSSean Hefty case AF_INET6: 10592e2d190cSSean Hefty return ipv6_addr_loopback(&((struct sockaddr_in6 *) addr)->sin6_addr); 10602e2d190cSSean Hefty case AF_IB: 10612e2d190cSSean Hefty return ib_addr_loopback(&((struct sockaddr_ib *) addr)->sib_addr); 10622e2d190cSSean Hefty default: 10632e2d190cSSean Hefty return 0; 10642e2d190cSSean Hefty } 1065e51060f0SSean Hefty } 1066e51060f0SSean Hefty 1067e51060f0SSean Hefty static inline int cma_any_addr(struct sockaddr *addr) 1068e51060f0SSean Hefty { 1069e51060f0SSean Hefty return cma_zero_addr(addr) || cma_loopback_addr(addr); 1070e51060f0SSean Hefty } 1071e51060f0SSean Hefty 107243b752daSHefty, Sean static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst) 107343b752daSHefty, Sean { 107443b752daSHefty, Sean if (src->sa_family != dst->sa_family) 107543b752daSHefty, Sean return -1; 107643b752daSHefty, Sean 107743b752daSHefty, Sean switch (src->sa_family) { 107843b752daSHefty, Sean case AF_INET: 107943b752daSHefty, Sean return ((struct sockaddr_in *) src)->sin_addr.s_addr != 108043b752daSHefty, Sean ((struct sockaddr_in *) dst)->sin_addr.s_addr; 10812e2d190cSSean Hefty case AF_INET6: 108243b752daSHefty, Sean return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr, 108343b752daSHefty, Sean &((struct sockaddr_in6 *) dst)->sin6_addr); 10842e2d190cSSean Hefty default: 10852e2d190cSSean Hefty return ib_addr_cmp(&((struct sockaddr_ib *) src)->sib_addr, 10862e2d190cSSean Hefty &((struct sockaddr_ib *) dst)->sib_addr); 108743b752daSHefty, Sean } 108843b752daSHefty, Sean } 108943b752daSHefty, Sean 109058afdcb7SSean Hefty static __be16 cma_port(struct sockaddr *addr) 1091628e5f6dSSean Hefty { 109258afdcb7SSean Hefty struct sockaddr_ib *sib; 109358afdcb7SSean Hefty 109458afdcb7SSean Hefty switch (addr->sa_family) { 109558afdcb7SSean Hefty case AF_INET: 1096628e5f6dSSean Hefty return ((struct sockaddr_in *) addr)->sin_port; 109758afdcb7SSean Hefty case AF_INET6: 1098628e5f6dSSean Hefty return ((struct sockaddr_in6 *) addr)->sin6_port; 109958afdcb7SSean Hefty case AF_IB: 110058afdcb7SSean Hefty sib = (struct sockaddr_ib *) addr; 110158afdcb7SSean Hefty return htons((u16) (be64_to_cpu(sib->sib_sid) & 110258afdcb7SSean Hefty be64_to_cpu(sib->sib_sid_mask))); 110358afdcb7SSean Hefty default: 110458afdcb7SSean Hefty return 0; 110558afdcb7SSean Hefty } 1106628e5f6dSSean Hefty } 1107628e5f6dSSean Hefty 1108e51060f0SSean Hefty static inline int cma_any_port(struct sockaddr *addr) 1109e51060f0SSean Hefty { 1110628e5f6dSSean Hefty return !cma_port(addr); 1111e51060f0SSean Hefty } 1112e51060f0SSean Hefty 11130c505f70SHaggai Eran static void cma_save_ib_info(struct sockaddr *src_addr, 11140c505f70SHaggai Eran struct sockaddr *dst_addr, 11150c505f70SHaggai Eran struct rdma_cm_id *listen_id, 1116c2f8fc4eSDasaratharaman Chandramouli struct sa_path_rec *path) 1117e51060f0SSean Hefty { 1118fbaa1a6dSSean Hefty struct sockaddr_ib *listen_ib, *ib; 1119e51060f0SSean Hefty 1120fbaa1a6dSSean Hefty listen_ib = (struct sockaddr_ib *) &listen_id->route.addr.src_addr; 11210c505f70SHaggai Eran if (src_addr) { 11220c505f70SHaggai Eran ib = (struct sockaddr_ib *)src_addr; 11230c505f70SHaggai Eran ib->sib_family = AF_IB; 1124c07678bbSMatthew Finlay if (path) { 1125fbaa1a6dSSean Hefty ib->sib_pkey = path->pkey; 1126fbaa1a6dSSean Hefty ib->sib_flowinfo = path->flow_label; 1127fbaa1a6dSSean Hefty memcpy(&ib->sib_addr, &path->sgid, 16); 1128d3957b86SMajd Dibbiny ib->sib_sid = path->service_id; 11290c505f70SHaggai Eran ib->sib_scope_id = 0; 1130c07678bbSMatthew Finlay } else { 1131c07678bbSMatthew Finlay ib->sib_pkey = listen_ib->sib_pkey; 1132c07678bbSMatthew Finlay ib->sib_flowinfo = listen_ib->sib_flowinfo; 1133c07678bbSMatthew Finlay ib->sib_addr = listen_ib->sib_addr; 1134fbaa1a6dSSean Hefty ib->sib_sid = listen_ib->sib_sid; 1135fbaa1a6dSSean Hefty ib->sib_scope_id = listen_ib->sib_scope_id; 11360c505f70SHaggai Eran } 11370c505f70SHaggai Eran ib->sib_sid_mask = cpu_to_be64(0xffffffffffffffffULL); 11380c505f70SHaggai Eran } 11390c505f70SHaggai Eran if (dst_addr) { 11400c505f70SHaggai Eran ib = (struct sockaddr_ib *)dst_addr; 11410c505f70SHaggai Eran ib->sib_family = AF_IB; 1142c07678bbSMatthew Finlay if (path) { 1143fbaa1a6dSSean Hefty ib->sib_pkey = path->pkey; 1144fbaa1a6dSSean Hefty ib->sib_flowinfo = path->flow_label; 1145fbaa1a6dSSean Hefty memcpy(&ib->sib_addr, &path->dgid, 16); 1146fbaa1a6dSSean Hefty } 1147c07678bbSMatthew Finlay } 114828521440SJason Gunthorpe } 114928521440SJason Gunthorpe 1150c50e90d0SArnd Bergmann static void cma_save_ip4_info(struct sockaddr_in *src_addr, 1151c50e90d0SArnd Bergmann struct sockaddr_in *dst_addr, 11520c505f70SHaggai Eran struct cma_hdr *hdr, 11530c505f70SHaggai Eran __be16 local_port) 1154fbaa1a6dSSean Hefty { 11550c505f70SHaggai Eran if (src_addr) { 1156c50e90d0SArnd Bergmann *src_addr = (struct sockaddr_in) { 1157c50e90d0SArnd Bergmann .sin_family = AF_INET, 1158c50e90d0SArnd Bergmann .sin_addr.s_addr = hdr->dst_addr.ip4.addr, 1159c50e90d0SArnd Bergmann .sin_port = local_port, 1160c50e90d0SArnd Bergmann }; 11610c505f70SHaggai Eran } 1162fbaa1a6dSSean Hefty 11630c505f70SHaggai Eran if (dst_addr) { 1164c50e90d0SArnd Bergmann *dst_addr = (struct sockaddr_in) { 1165c50e90d0SArnd Bergmann .sin_family = AF_INET, 1166c50e90d0SArnd Bergmann .sin_addr.s_addr = hdr->src_addr.ip4.addr, 1167c50e90d0SArnd Bergmann .sin_port = hdr->port, 1168c50e90d0SArnd Bergmann }; 1169fbaa1a6dSSean Hefty } 11700c505f70SHaggai Eran } 1171fbaa1a6dSSean Hefty 1172c50e90d0SArnd Bergmann static void cma_save_ip6_info(struct sockaddr_in6 *src_addr, 1173c50e90d0SArnd Bergmann struct sockaddr_in6 *dst_addr, 11740c505f70SHaggai Eran struct cma_hdr *hdr, 11750c505f70SHaggai Eran __be16 local_port) 1176fbaa1a6dSSean Hefty { 11770c505f70SHaggai Eran if (src_addr) { 1178c50e90d0SArnd Bergmann *src_addr = (struct sockaddr_in6) { 1179c50e90d0SArnd Bergmann .sin6_family = AF_INET6, 1180c50e90d0SArnd Bergmann .sin6_addr = hdr->dst_addr.ip6, 1181c50e90d0SArnd Bergmann .sin6_port = local_port, 1182c50e90d0SArnd Bergmann }; 11830c505f70SHaggai Eran } 1184fbaa1a6dSSean Hefty 11850c505f70SHaggai Eran if (dst_addr) { 1186c50e90d0SArnd Bergmann *dst_addr = (struct sockaddr_in6) { 1187c50e90d0SArnd Bergmann .sin6_family = AF_INET6, 1188c50e90d0SArnd Bergmann .sin6_addr = hdr->src_addr.ip6, 1189c50e90d0SArnd Bergmann .sin6_port = hdr->port, 1190c50e90d0SArnd Bergmann }; 1191fbaa1a6dSSean Hefty } 11920c505f70SHaggai Eran } 1193fbaa1a6dSSean Hefty 11940c505f70SHaggai Eran static u16 cma_port_from_service_id(__be64 service_id) 11950c505f70SHaggai Eran { 11960c505f70SHaggai Eran return (u16)be64_to_cpu(service_id); 11970c505f70SHaggai Eran } 11980c505f70SHaggai Eran 11990c505f70SHaggai Eran static int cma_save_ip_info(struct sockaddr *src_addr, 12000c505f70SHaggai Eran struct sockaddr *dst_addr, 12010c505f70SHaggai Eran struct ib_cm_event *ib_event, 12020c505f70SHaggai Eran __be64 service_id) 1203fbaa1a6dSSean Hefty { 1204fbaa1a6dSSean Hefty struct cma_hdr *hdr; 12050c505f70SHaggai Eran __be16 port; 1206e51060f0SSean Hefty 1207fbaa1a6dSSean Hefty hdr = ib_event->private_data; 1208fbaa1a6dSSean Hefty if (hdr->cma_version != CMA_VERSION) 1209fbaa1a6dSSean Hefty return -EINVAL; 1210e51060f0SSean Hefty 12110c505f70SHaggai Eran port = htons(cma_port_from_service_id(service_id)); 12120c505f70SHaggai Eran 1213fbaa1a6dSSean Hefty switch (cma_get_ip_ver(hdr)) { 1214e51060f0SSean Hefty case 4: 1215c50e90d0SArnd Bergmann cma_save_ip4_info((struct sockaddr_in *)src_addr, 1216c50e90d0SArnd Bergmann (struct sockaddr_in *)dst_addr, hdr, port); 1217e51060f0SSean Hefty break; 1218e51060f0SSean Hefty case 6: 1219c50e90d0SArnd Bergmann cma_save_ip6_info((struct sockaddr_in6 *)src_addr, 1220c50e90d0SArnd Bergmann (struct sockaddr_in6 *)dst_addr, hdr, port); 1221e51060f0SSean Hefty break; 1222e51060f0SSean Hefty default: 12234c21b5bcSHaggai Eran return -EAFNOSUPPORT; 1224e51060f0SSean Hefty } 12250c505f70SHaggai Eran 1226fbaa1a6dSSean Hefty return 0; 1227e51060f0SSean Hefty } 1228e51060f0SSean Hefty 12290c505f70SHaggai Eran static int cma_save_net_info(struct sockaddr *src_addr, 12300c505f70SHaggai Eran struct sockaddr *dst_addr, 12310c505f70SHaggai Eran struct rdma_cm_id *listen_id, 12320c505f70SHaggai Eran struct ib_cm_event *ib_event, 12330c505f70SHaggai Eran sa_family_t sa_family, __be64 service_id) 12340c505f70SHaggai Eran { 12350c505f70SHaggai Eran if (sa_family == AF_IB) { 12360c505f70SHaggai Eran if (ib_event->event == IB_CM_REQ_RECEIVED) 12370c505f70SHaggai Eran cma_save_ib_info(src_addr, dst_addr, listen_id, 12380c505f70SHaggai Eran ib_event->param.req_rcvd.primary_path); 12390c505f70SHaggai Eran else if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) 12400c505f70SHaggai Eran cma_save_ib_info(src_addr, dst_addr, listen_id, NULL); 12410c505f70SHaggai Eran return 0; 12420c505f70SHaggai Eran } 12430c505f70SHaggai Eran 12440c505f70SHaggai Eran return cma_save_ip_info(src_addr, dst_addr, ib_event, service_id); 12450c505f70SHaggai Eran } 12460c505f70SHaggai Eran 12474c21b5bcSHaggai Eran static int cma_save_req_info(const struct ib_cm_event *ib_event, 12484c21b5bcSHaggai Eran struct cma_req_info *req) 12494c21b5bcSHaggai Eran { 12504c21b5bcSHaggai Eran const struct ib_cm_req_event_param *req_param = 12514c21b5bcSHaggai Eran &ib_event->param.req_rcvd; 12524c21b5bcSHaggai Eran const struct ib_cm_sidr_req_event_param *sidr_param = 12534c21b5bcSHaggai Eran &ib_event->param.sidr_req_rcvd; 12544c21b5bcSHaggai Eran 12554c21b5bcSHaggai Eran switch (ib_event->event) { 12564c21b5bcSHaggai Eran case IB_CM_REQ_RECEIVED: 12574c21b5bcSHaggai Eran req->device = req_param->listen_id->device; 12584c21b5bcSHaggai Eran req->port = req_param->port; 12594c21b5bcSHaggai Eran memcpy(&req->local_gid, &req_param->primary_path->sgid, 12604c21b5bcSHaggai Eran sizeof(req->local_gid)); 12614c21b5bcSHaggai Eran req->has_gid = true; 1262d3957b86SMajd Dibbiny req->service_id = req_param->primary_path->service_id; 1263ab3964adSHaggai Eran req->pkey = be16_to_cpu(req_param->primary_path->pkey); 126484424a7fSHaggai Eran if (req->pkey != req_param->bth_pkey) 126584424a7fSHaggai Eran pr_warn_ratelimited("RDMA CMA: got different BTH P_Key (0x%x) and primary path P_Key (0x%x)\n" 126684424a7fSHaggai Eran "RDMA CMA: in the future this may cause the request to be dropped\n", 126784424a7fSHaggai Eran req_param->bth_pkey, req->pkey); 12684c21b5bcSHaggai Eran break; 12694c21b5bcSHaggai Eran case IB_CM_SIDR_REQ_RECEIVED: 12704c21b5bcSHaggai Eran req->device = sidr_param->listen_id->device; 12714c21b5bcSHaggai Eran req->port = sidr_param->port; 12724c21b5bcSHaggai Eran req->has_gid = false; 12734c21b5bcSHaggai Eran req->service_id = sidr_param->service_id; 1274ab3964adSHaggai Eran req->pkey = sidr_param->pkey; 127584424a7fSHaggai Eran if (req->pkey != sidr_param->bth_pkey) 127684424a7fSHaggai Eran pr_warn_ratelimited("RDMA CMA: got different BTH P_Key (0x%x) and SIDR request payload P_Key (0x%x)\n" 127784424a7fSHaggai Eran "RDMA CMA: in the future this may cause the request to be dropped\n", 127884424a7fSHaggai Eran sidr_param->bth_pkey, req->pkey); 12794c21b5bcSHaggai Eran break; 12804c21b5bcSHaggai Eran default: 12814c21b5bcSHaggai Eran return -EINVAL; 12824c21b5bcSHaggai Eran } 12834c21b5bcSHaggai Eran 12844c21b5bcSHaggai Eran return 0; 12854c21b5bcSHaggai Eran } 12864c21b5bcSHaggai Eran 1287f887f2acSHaggai Eran static bool validate_ipv4_net_dev(struct net_device *net_dev, 1288f887f2acSHaggai Eran const struct sockaddr_in *dst_addr, 1289f887f2acSHaggai Eran const struct sockaddr_in *src_addr) 1290f887f2acSHaggai Eran { 1291f887f2acSHaggai Eran __be32 daddr = dst_addr->sin_addr.s_addr, 1292f887f2acSHaggai Eran saddr = src_addr->sin_addr.s_addr; 1293f887f2acSHaggai Eran struct fib_result res; 1294f887f2acSHaggai Eran struct flowi4 fl4; 1295f887f2acSHaggai Eran int err; 1296f887f2acSHaggai Eran bool ret; 1297f887f2acSHaggai Eran 1298f887f2acSHaggai Eran if (ipv4_is_multicast(saddr) || ipv4_is_lbcast(saddr) || 1299f887f2acSHaggai Eran ipv4_is_lbcast(daddr) || ipv4_is_zeronet(saddr) || 1300f887f2acSHaggai Eran ipv4_is_zeronet(daddr) || ipv4_is_loopback(daddr) || 1301f887f2acSHaggai Eran ipv4_is_loopback(saddr)) 1302f887f2acSHaggai Eran return false; 1303f887f2acSHaggai Eran 1304f887f2acSHaggai Eran memset(&fl4, 0, sizeof(fl4)); 1305f887f2acSHaggai Eran fl4.flowi4_iif = net_dev->ifindex; 1306f887f2acSHaggai Eran fl4.daddr = daddr; 1307f887f2acSHaggai Eran fl4.saddr = saddr; 1308f887f2acSHaggai Eran 1309f887f2acSHaggai Eran rcu_read_lock(); 1310f887f2acSHaggai Eran err = fib_lookup(dev_net(net_dev), &fl4, &res, 0); 1311d3632493SBart Van Assche ret = err == 0 && FIB_RES_DEV(res) == net_dev; 1312f887f2acSHaggai Eran rcu_read_unlock(); 1313f887f2acSHaggai Eran 1314f887f2acSHaggai Eran return ret; 1315f887f2acSHaggai Eran } 1316f887f2acSHaggai Eran 1317f887f2acSHaggai Eran static bool validate_ipv6_net_dev(struct net_device *net_dev, 1318f887f2acSHaggai Eran const struct sockaddr_in6 *dst_addr, 1319f887f2acSHaggai Eran const struct sockaddr_in6 *src_addr) 1320f887f2acSHaggai Eran { 1321f887f2acSHaggai Eran #if IS_ENABLED(CONFIG_IPV6) 1322f887f2acSHaggai Eran const int strict = ipv6_addr_type(&dst_addr->sin6_addr) & 1323f887f2acSHaggai Eran IPV6_ADDR_LINKLOCAL; 1324f887f2acSHaggai Eran struct rt6_info *rt = rt6_lookup(dev_net(net_dev), &dst_addr->sin6_addr, 1325f887f2acSHaggai Eran &src_addr->sin6_addr, net_dev->ifindex, 1326b75cc8f9SDavid Ahern NULL, strict); 1327f887f2acSHaggai Eran bool ret; 1328f887f2acSHaggai Eran 1329f887f2acSHaggai Eran if (!rt) 1330f887f2acSHaggai Eran return false; 1331f887f2acSHaggai Eran 1332f887f2acSHaggai Eran ret = rt->rt6i_idev->dev == net_dev; 1333f887f2acSHaggai Eran ip6_rt_put(rt); 1334f887f2acSHaggai Eran 1335f887f2acSHaggai Eran return ret; 1336f887f2acSHaggai Eran #else 1337f887f2acSHaggai Eran return false; 1338f887f2acSHaggai Eran #endif 1339f887f2acSHaggai Eran } 1340f887f2acSHaggai Eran 1341f887f2acSHaggai Eran static bool validate_net_dev(struct net_device *net_dev, 1342f887f2acSHaggai Eran const struct sockaddr *daddr, 1343f887f2acSHaggai Eran const struct sockaddr *saddr) 1344f887f2acSHaggai Eran { 1345f887f2acSHaggai Eran const struct sockaddr_in *daddr4 = (const struct sockaddr_in *)daddr; 1346f887f2acSHaggai Eran const struct sockaddr_in *saddr4 = (const struct sockaddr_in *)saddr; 1347f887f2acSHaggai Eran const struct sockaddr_in6 *daddr6 = (const struct sockaddr_in6 *)daddr; 1348f887f2acSHaggai Eran const struct sockaddr_in6 *saddr6 = (const struct sockaddr_in6 *)saddr; 1349f887f2acSHaggai Eran 1350f887f2acSHaggai Eran switch (daddr->sa_family) { 1351f887f2acSHaggai Eran case AF_INET: 1352f887f2acSHaggai Eran return saddr->sa_family == AF_INET && 1353f887f2acSHaggai Eran validate_ipv4_net_dev(net_dev, daddr4, saddr4); 1354f887f2acSHaggai Eran 1355f887f2acSHaggai Eran case AF_INET6: 1356f887f2acSHaggai Eran return saddr->sa_family == AF_INET6 && 1357f887f2acSHaggai Eran validate_ipv6_net_dev(net_dev, daddr6, saddr6); 1358f887f2acSHaggai Eran 1359f887f2acSHaggai Eran default: 1360f887f2acSHaggai Eran return false; 1361f887f2acSHaggai Eran } 1362f887f2acSHaggai Eran } 1363f887f2acSHaggai Eran 13644c21b5bcSHaggai Eran static struct net_device *cma_get_net_dev(struct ib_cm_event *ib_event, 13652918c1a9SParav Pandit struct cma_req_info *req) 13664c21b5bcSHaggai Eran { 13672918c1a9SParav Pandit struct sockaddr *listen_addr = 13682918c1a9SParav Pandit (struct sockaddr *)&req->listen_addr_storage; 13692918c1a9SParav Pandit struct sockaddr *src_addr = (struct sockaddr *)&req->src_addr_storage; 13704c21b5bcSHaggai Eran struct net_device *net_dev; 13714c21b5bcSHaggai Eran const union ib_gid *gid = req->has_gid ? &req->local_gid : NULL; 13724c21b5bcSHaggai Eran int err; 13734c21b5bcSHaggai Eran 1374f887f2acSHaggai Eran err = cma_save_ip_info(listen_addr, src_addr, ib_event, 1375f887f2acSHaggai Eran req->service_id); 13764c21b5bcSHaggai Eran if (err) 13774c21b5bcSHaggai Eran return ERR_PTR(err); 13784c21b5bcSHaggai Eran 13794c21b5bcSHaggai Eran net_dev = ib_get_net_dev_by_params(req->device, req->port, req->pkey, 13804c21b5bcSHaggai Eran gid, listen_addr); 13814c21b5bcSHaggai Eran if (!net_dev) 13824c21b5bcSHaggai Eran return ERR_PTR(-ENODEV); 13834c21b5bcSHaggai Eran 13844c21b5bcSHaggai Eran return net_dev; 13854c21b5bcSHaggai Eran } 13864c21b5bcSHaggai Eran 13872253fc0cSSteve Wise static enum rdma_ucm_port_space rdma_ps_from_service_id(__be64 service_id) 13884c21b5bcSHaggai Eran { 13894c21b5bcSHaggai Eran return (be64_to_cpu(service_id) >> 16) & 0xffff; 13904c21b5bcSHaggai Eran } 13914c21b5bcSHaggai Eran 13924c21b5bcSHaggai Eran static bool cma_match_private_data(struct rdma_id_private *id_priv, 13934c21b5bcSHaggai Eran const struct cma_hdr *hdr) 13944c21b5bcSHaggai Eran { 13954c21b5bcSHaggai Eran struct sockaddr *addr = cma_src_addr(id_priv); 13964c21b5bcSHaggai Eran __be32 ip4_addr; 13974c21b5bcSHaggai Eran struct in6_addr ip6_addr; 13984c21b5bcSHaggai Eran 13994c21b5bcSHaggai Eran if (cma_any_addr(addr) && !id_priv->afonly) 14004c21b5bcSHaggai Eran return true; 14014c21b5bcSHaggai Eran 14024c21b5bcSHaggai Eran switch (addr->sa_family) { 14034c21b5bcSHaggai Eran case AF_INET: 14044c21b5bcSHaggai Eran ip4_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; 14054c21b5bcSHaggai Eran if (cma_get_ip_ver(hdr) != 4) 14064c21b5bcSHaggai Eran return false; 14074c21b5bcSHaggai Eran if (!cma_any_addr(addr) && 14084c21b5bcSHaggai Eran hdr->dst_addr.ip4.addr != ip4_addr) 14094c21b5bcSHaggai Eran return false; 14104c21b5bcSHaggai Eran break; 14114c21b5bcSHaggai Eran case AF_INET6: 14124c21b5bcSHaggai Eran ip6_addr = ((struct sockaddr_in6 *)addr)->sin6_addr; 14134c21b5bcSHaggai Eran if (cma_get_ip_ver(hdr) != 6) 14144c21b5bcSHaggai Eran return false; 14154c21b5bcSHaggai Eran if (!cma_any_addr(addr) && 14164c21b5bcSHaggai Eran memcmp(&hdr->dst_addr.ip6, &ip6_addr, sizeof(ip6_addr))) 14174c21b5bcSHaggai Eran return false; 14184c21b5bcSHaggai Eran break; 14194c21b5bcSHaggai Eran case AF_IB: 14204c21b5bcSHaggai Eran return true; 14214c21b5bcSHaggai Eran default: 14224c21b5bcSHaggai Eran return false; 14234c21b5bcSHaggai Eran } 14244c21b5bcSHaggai Eran 14254c21b5bcSHaggai Eran return true; 14264c21b5bcSHaggai Eran } 14274c21b5bcSHaggai Eran 1428b8cab5daSHaggai Eran static bool cma_protocol_roce(const struct rdma_cm_id *id) 1429b8cab5daSHaggai Eran { 1430b8cab5daSHaggai Eran struct ib_device *device = id->device; 1431b8cab5daSHaggai Eran const int port_num = id->port_num ?: rdma_start_port(device); 1432b8cab5daSHaggai Eran 14335ac08a34SParav Pandit return rdma_protocol_roce(device, port_num); 1434b8cab5daSHaggai Eran } 1435b8cab5daSHaggai Eran 1436fac51590SMatan Barak static bool cma_match_net_dev(const struct rdma_cm_id *id, 1437fac51590SMatan Barak const struct net_device *net_dev, 1438fac51590SMatan Barak u8 port_num) 14394c21b5bcSHaggai Eran { 1440fac51590SMatan Barak const struct rdma_addr *addr = &id->route.addr; 14414c21b5bcSHaggai Eran 14424c21b5bcSHaggai Eran if (!net_dev) 1443b8cab5daSHaggai Eran /* This request is an AF_IB request or a RoCE request */ 1444fac51590SMatan Barak return (!id->port_num || id->port_num == port_num) && 1445fac51590SMatan Barak (addr->src_addr.ss_family == AF_IB || 14465ac08a34SParav Pandit rdma_protocol_roce(id->device, port_num)); 14474c21b5bcSHaggai Eran 14484c21b5bcSHaggai Eran return !addr->dev_addr.bound_dev_if || 1449fa20105eSGuy Shapiro (net_eq(dev_net(net_dev), addr->dev_addr.net) && 14504c21b5bcSHaggai Eran addr->dev_addr.bound_dev_if == net_dev->ifindex); 14514c21b5bcSHaggai Eran } 14524c21b5bcSHaggai Eran 14534c21b5bcSHaggai Eran static struct rdma_id_private *cma_find_listener( 14544c21b5bcSHaggai Eran const struct rdma_bind_list *bind_list, 14554c21b5bcSHaggai Eran const struct ib_cm_id *cm_id, 14564c21b5bcSHaggai Eran const struct ib_cm_event *ib_event, 14574c21b5bcSHaggai Eran const struct cma_req_info *req, 14584c21b5bcSHaggai Eran const struct net_device *net_dev) 14594c21b5bcSHaggai Eran { 14604c21b5bcSHaggai Eran struct rdma_id_private *id_priv, *id_priv_dev; 14614c21b5bcSHaggai Eran 14624c21b5bcSHaggai Eran if (!bind_list) 14634c21b5bcSHaggai Eran return ERR_PTR(-EINVAL); 14644c21b5bcSHaggai Eran 14654c21b5bcSHaggai Eran hlist_for_each_entry(id_priv, &bind_list->owners, node) { 14664c21b5bcSHaggai Eran if (cma_match_private_data(id_priv, ib_event->private_data)) { 14674c21b5bcSHaggai Eran if (id_priv->id.device == cm_id->device && 1468fac51590SMatan Barak cma_match_net_dev(&id_priv->id, net_dev, req->port)) 14694c21b5bcSHaggai Eran return id_priv; 14704c21b5bcSHaggai Eran list_for_each_entry(id_priv_dev, 14714c21b5bcSHaggai Eran &id_priv->listen_list, 14724c21b5bcSHaggai Eran listen_list) { 14734c21b5bcSHaggai Eran if (id_priv_dev->id.device == cm_id->device && 1474fac51590SMatan Barak cma_match_net_dev(&id_priv_dev->id, net_dev, req->port)) 14754c21b5bcSHaggai Eran return id_priv_dev; 14764c21b5bcSHaggai Eran } 14774c21b5bcSHaggai Eran } 14784c21b5bcSHaggai Eran } 14794c21b5bcSHaggai Eran 14804c21b5bcSHaggai Eran return ERR_PTR(-EINVAL); 14814c21b5bcSHaggai Eran } 14824c21b5bcSHaggai Eran 14834c21b5bcSHaggai Eran static struct rdma_id_private *cma_id_from_event(struct ib_cm_id *cm_id, 14840b3ca768SHaggai Eran struct ib_cm_event *ib_event, 14850b3ca768SHaggai Eran struct net_device **net_dev) 14864c21b5bcSHaggai Eran { 14874c21b5bcSHaggai Eran struct cma_req_info req; 14884c21b5bcSHaggai Eran struct rdma_bind_list *bind_list; 14894c21b5bcSHaggai Eran struct rdma_id_private *id_priv; 14904c21b5bcSHaggai Eran int err; 14914c21b5bcSHaggai Eran 14924c21b5bcSHaggai Eran err = cma_save_req_info(ib_event, &req); 14934c21b5bcSHaggai Eran if (err) 14944c21b5bcSHaggai Eran return ERR_PTR(err); 14954c21b5bcSHaggai Eran 14960b3ca768SHaggai Eran *net_dev = cma_get_net_dev(ib_event, &req); 14970b3ca768SHaggai Eran if (IS_ERR(*net_dev)) { 14980b3ca768SHaggai Eran if (PTR_ERR(*net_dev) == -EAFNOSUPPORT) { 14994c21b5bcSHaggai Eran /* Assuming the protocol is AF_IB */ 15000b3ca768SHaggai Eran *net_dev = NULL; 15015ac08a34SParav Pandit } else if (rdma_protocol_roce(req.device, req.port)) { 1502b8cab5daSHaggai Eran /* TODO find the net dev matching the request parameters 1503b8cab5daSHaggai Eran * through the RoCE GID table */ 1504b8cab5daSHaggai Eran *net_dev = NULL; 15054c21b5bcSHaggai Eran } else { 15060b3ca768SHaggai Eran return ERR_CAST(*net_dev); 15074c21b5bcSHaggai Eran } 15084c21b5bcSHaggai Eran } 15094c21b5bcSHaggai Eran 15102918c1a9SParav Pandit /* 15112918c1a9SParav Pandit * Net namespace might be getting deleted while route lookup, 15122918c1a9SParav Pandit * cm_id lookup is in progress. Therefore, perform netdevice 15132918c1a9SParav Pandit * validation, cm_id lookup under rcu lock. 15142918c1a9SParav Pandit * RCU lock along with netdevice state check, synchronizes with 15152918c1a9SParav Pandit * netdevice migrating to different net namespace and also avoids 15162918c1a9SParav Pandit * case where net namespace doesn't get deleted while lookup is in 15172918c1a9SParav Pandit * progress. 15182918c1a9SParav Pandit * If the device state is not IFF_UP, its properties such as ifindex 15192918c1a9SParav Pandit * and nd_net cannot be trusted to remain valid without rcu lock. 15202918c1a9SParav Pandit * net/core/dev.c change_net_namespace() ensures to synchronize with 15212918c1a9SParav Pandit * ongoing operations on net device after device is closed using 15222918c1a9SParav Pandit * synchronize_net(). 15232918c1a9SParav Pandit */ 15242918c1a9SParav Pandit rcu_read_lock(); 15252918c1a9SParav Pandit if (*net_dev) { 15262918c1a9SParav Pandit /* 15272918c1a9SParav Pandit * If netdevice is down, it is likely that it is administratively 15282918c1a9SParav Pandit * down or it might be migrating to different namespace. 15292918c1a9SParav Pandit * In that case avoid further processing, as the net namespace 15302918c1a9SParav Pandit * or ifindex may change. 15312918c1a9SParav Pandit */ 15322918c1a9SParav Pandit if (((*net_dev)->flags & IFF_UP) == 0) { 15332918c1a9SParav Pandit id_priv = ERR_PTR(-EHOSTUNREACH); 15342918c1a9SParav Pandit goto err; 15352918c1a9SParav Pandit } 15362918c1a9SParav Pandit 15372918c1a9SParav Pandit if (!validate_net_dev(*net_dev, 15382918c1a9SParav Pandit (struct sockaddr *)&req.listen_addr_storage, 15392918c1a9SParav Pandit (struct sockaddr *)&req.src_addr_storage)) { 15402918c1a9SParav Pandit id_priv = ERR_PTR(-EHOSTUNREACH); 15412918c1a9SParav Pandit goto err; 15422918c1a9SParav Pandit } 15432918c1a9SParav Pandit } 15442918c1a9SParav Pandit 1545fa20105eSGuy Shapiro bind_list = cma_ps_find(*net_dev ? dev_net(*net_dev) : &init_net, 15464be74b42SHaggai Eran rdma_ps_from_service_id(req.service_id), 15474c21b5bcSHaggai Eran cma_port_from_service_id(req.service_id)); 15480b3ca768SHaggai Eran id_priv = cma_find_listener(bind_list, cm_id, ib_event, &req, *net_dev); 15492918c1a9SParav Pandit err: 15502918c1a9SParav Pandit rcu_read_unlock(); 1551b3b51f9fSHaggai Eran if (IS_ERR(id_priv) && *net_dev) { 1552be688195SHaggai Eran dev_put(*net_dev); 1553be688195SHaggai Eran *net_dev = NULL; 1554be688195SHaggai Eran } 15554c21b5bcSHaggai Eran return id_priv; 15564c21b5bcSHaggai Eran } 15574c21b5bcSHaggai Eran 1558c0b64f58SBart Van Assche static inline u8 cma_user_data_offset(struct rdma_id_private *id_priv) 1559e51060f0SSean Hefty { 1560e8160e15SSean Hefty return cma_family(id_priv) == AF_IB ? 0 : sizeof(struct cma_hdr); 1561e51060f0SSean Hefty } 1562e51060f0SSean Hefty 1563e51060f0SSean Hefty static void cma_cancel_route(struct rdma_id_private *id_priv) 1564e51060f0SSean Hefty { 1565fe53ba2fSMichael Wang if (rdma_cap_ib_sa(id_priv->id.device, id_priv->id.port_num)) { 1566e51060f0SSean Hefty if (id_priv->query) 1567e51060f0SSean Hefty ib_sa_cancel_query(id_priv->query_id, id_priv->query); 1568e51060f0SSean Hefty } 1569e51060f0SSean Hefty } 1570e51060f0SSean Hefty 1571e51060f0SSean Hefty static void cma_cancel_listens(struct rdma_id_private *id_priv) 1572e51060f0SSean Hefty { 1573e51060f0SSean Hefty struct rdma_id_private *dev_id_priv; 1574e51060f0SSean Hefty 1575d02d1f53SSean Hefty /* 1576d02d1f53SSean Hefty * Remove from listen_any_list to prevent added devices from spawning 1577d02d1f53SSean Hefty * additional listen requests. 1578d02d1f53SSean Hefty */ 1579e51060f0SSean Hefty mutex_lock(&lock); 1580e51060f0SSean Hefty list_del(&id_priv->list); 1581e51060f0SSean Hefty 1582e51060f0SSean Hefty while (!list_empty(&id_priv->listen_list)) { 1583e51060f0SSean Hefty dev_id_priv = list_entry(id_priv->listen_list.next, 1584e51060f0SSean Hefty struct rdma_id_private, listen_list); 1585d02d1f53SSean Hefty /* sync with device removal to avoid duplicate destruction */ 1586d02d1f53SSean Hefty list_del_init(&dev_id_priv->list); 1587d02d1f53SSean Hefty list_del(&dev_id_priv->listen_list); 1588d02d1f53SSean Hefty mutex_unlock(&lock); 1589d02d1f53SSean Hefty 1590d02d1f53SSean Hefty rdma_destroy_id(&dev_id_priv->id); 1591d02d1f53SSean Hefty mutex_lock(&lock); 1592e51060f0SSean Hefty } 1593e51060f0SSean Hefty mutex_unlock(&lock); 1594e51060f0SSean Hefty } 1595e51060f0SSean Hefty 1596e51060f0SSean Hefty static void cma_cancel_operation(struct rdma_id_private *id_priv, 1597550e5ca7SNir Muchtar enum rdma_cm_state state) 1598e51060f0SSean Hefty { 1599e51060f0SSean Hefty switch (state) { 1600550e5ca7SNir Muchtar case RDMA_CM_ADDR_QUERY: 1601e51060f0SSean Hefty rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); 1602e51060f0SSean Hefty break; 1603550e5ca7SNir Muchtar case RDMA_CM_ROUTE_QUERY: 1604e51060f0SSean Hefty cma_cancel_route(id_priv); 1605e51060f0SSean Hefty break; 1606550e5ca7SNir Muchtar case RDMA_CM_LISTEN: 1607f4753834SSean Hefty if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev) 1608e51060f0SSean Hefty cma_cancel_listens(id_priv); 1609e51060f0SSean Hefty break; 1610e51060f0SSean Hefty default: 1611e51060f0SSean Hefty break; 1612e51060f0SSean Hefty } 1613e51060f0SSean Hefty } 1614e51060f0SSean Hefty 1615e51060f0SSean Hefty static void cma_release_port(struct rdma_id_private *id_priv) 1616e51060f0SSean Hefty { 1617e51060f0SSean Hefty struct rdma_bind_list *bind_list = id_priv->bind_list; 1618fa20105eSGuy Shapiro struct net *net = id_priv->id.route.addr.dev_addr.net; 1619e51060f0SSean Hefty 1620e51060f0SSean Hefty if (!bind_list) 1621e51060f0SSean Hefty return; 1622e51060f0SSean Hefty 1623e51060f0SSean Hefty mutex_lock(&lock); 1624e51060f0SSean Hefty hlist_del(&id_priv->node); 1625e51060f0SSean Hefty if (hlist_empty(&bind_list->owners)) { 1626fa20105eSGuy Shapiro cma_ps_remove(net, bind_list->ps, bind_list->port); 1627e51060f0SSean Hefty kfree(bind_list); 1628e51060f0SSean Hefty } 1629e51060f0SSean Hefty mutex_unlock(&lock); 1630e51060f0SSean Hefty } 1631e51060f0SSean Hefty 1632*88145678SParav Pandit static void cma_leave_roce_mc_group(struct rdma_id_private *id_priv, 1633*88145678SParav Pandit struct cma_multicast *mc) 1634*88145678SParav Pandit { 1635*88145678SParav Pandit if (mc->igmp_joined) { 1636*88145678SParav Pandit struct rdma_dev_addr *dev_addr = 1637*88145678SParav Pandit &id_priv->id.route.addr.dev_addr; 1638*88145678SParav Pandit struct net_device *ndev = NULL; 1639*88145678SParav Pandit 1640*88145678SParav Pandit if (dev_addr->bound_dev_if) 1641*88145678SParav Pandit ndev = dev_get_by_index(dev_addr->net, 1642*88145678SParav Pandit dev_addr->bound_dev_if); 1643*88145678SParav Pandit if (ndev) { 1644*88145678SParav Pandit cma_igmp_send(ndev, 1645*88145678SParav Pandit &mc->multicast.ib->rec.mgid, 1646*88145678SParav Pandit false); 1647*88145678SParav Pandit dev_put(ndev); 1648*88145678SParav Pandit } 1649*88145678SParav Pandit mc->igmp_joined = false; 1650*88145678SParav Pandit } 1651*88145678SParav Pandit kref_put(&mc->mcref, release_mc); 1652*88145678SParav Pandit } 1653*88145678SParav Pandit 1654c8f6a362SSean Hefty static void cma_leave_mc_groups(struct rdma_id_private *id_priv) 1655c8f6a362SSean Hefty { 1656c8f6a362SSean Hefty struct cma_multicast *mc; 1657c8f6a362SSean Hefty 1658c8f6a362SSean Hefty while (!list_empty(&id_priv->mc_list)) { 1659c8f6a362SSean Hefty mc = container_of(id_priv->mc_list.next, 1660c8f6a362SSean Hefty struct cma_multicast, list); 1661c8f6a362SSean Hefty list_del(&mc->list); 1662a31ad3b0SMichael Wang if (rdma_cap_ib_mcast(id_priv->cma_dev->device, 16635c9a5282SMichael Wang id_priv->id.port_num)) { 1664c8f6a362SSean Hefty ib_sa_free_multicast(mc->multicast.ib); 1665c8f6a362SSean Hefty kfree(mc); 1666bee3c3c9SMoni Shoua } else { 1667*88145678SParav Pandit cma_leave_roce_mc_group(id_priv, mc); 1668c8f6a362SSean Hefty } 1669c8f6a362SSean Hefty } 1670bee3c3c9SMoni Shoua } 1671c8f6a362SSean Hefty 1672e51060f0SSean Hefty void rdma_destroy_id(struct rdma_cm_id *id) 1673e51060f0SSean Hefty { 1674e51060f0SSean Hefty struct rdma_id_private *id_priv; 1675550e5ca7SNir Muchtar enum rdma_cm_state state; 1676e51060f0SSean Hefty 1677e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 1678550e5ca7SNir Muchtar state = cma_exch(id_priv, RDMA_CM_DESTROYING); 1679e51060f0SSean Hefty cma_cancel_operation(id_priv, state); 1680e51060f0SSean Hefty 1681a396d43aSSean Hefty /* 1682a396d43aSSean Hefty * Wait for any active callback to finish. New callbacks will find 1683a396d43aSSean Hefty * the id_priv state set to destroying and abort. 1684a396d43aSSean Hefty */ 1685a396d43aSSean Hefty mutex_lock(&id_priv->handler_mutex); 1686a396d43aSSean Hefty mutex_unlock(&id_priv->handler_mutex); 1687a396d43aSSean Hefty 1688e51060f0SSean Hefty if (id_priv->cma_dev) { 168900313983SSteve Wise rdma_restrack_del(&id_priv->res); 169072219ceaSMichael Wang if (rdma_cap_ib_cm(id_priv->id.device, 1)) { 16910c9361fcSJack Morgenstein if (id_priv->cm_id.ib) 1692e51060f0SSean Hefty ib_destroy_cm_id(id_priv->cm_id.ib); 169304215330SMichael Wang } else if (rdma_cap_iw_cm(id_priv->id.device, 1)) { 16940c9361fcSJack Morgenstein if (id_priv->cm_id.iw) 169507ebafbaSTom Tucker iw_destroy_cm_id(id_priv->cm_id.iw); 1696e51060f0SSean Hefty } 1697c8f6a362SSean Hefty cma_leave_mc_groups(id_priv); 1698a396d43aSSean Hefty cma_release_dev(id_priv); 1699e51060f0SSean Hefty } 1700e51060f0SSean Hefty 1701e51060f0SSean Hefty cma_release_port(id_priv); 1702e51060f0SSean Hefty cma_deref_id(id_priv); 1703e51060f0SSean Hefty wait_for_completion(&id_priv->comp); 1704e51060f0SSean Hefty 1705d02d1f53SSean Hefty if (id_priv->internal_id) 1706d02d1f53SSean Hefty cma_deref_id(id_priv->id.context); 1707d02d1f53SSean Hefty 1708e51060f0SSean Hefty kfree(id_priv->id.route.path_rec); 1709fa20105eSGuy Shapiro put_net(id_priv->id.route.addr.dev_addr.net); 1710e51060f0SSean Hefty kfree(id_priv); 1711e51060f0SSean Hefty } 1712e51060f0SSean Hefty EXPORT_SYMBOL(rdma_destroy_id); 1713e51060f0SSean Hefty 1714e51060f0SSean Hefty static int cma_rep_recv(struct rdma_id_private *id_priv) 1715e51060f0SSean Hefty { 1716e51060f0SSean Hefty int ret; 1717e51060f0SSean Hefty 17185851bb89SSean Hefty ret = cma_modify_qp_rtr(id_priv, NULL); 1719e51060f0SSean Hefty if (ret) 1720e51060f0SSean Hefty goto reject; 1721e51060f0SSean Hefty 17225851bb89SSean Hefty ret = cma_modify_qp_rts(id_priv, NULL); 1723e51060f0SSean Hefty if (ret) 1724e51060f0SSean Hefty goto reject; 1725e51060f0SSean Hefty 1726e51060f0SSean Hefty ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); 1727e51060f0SSean Hefty if (ret) 1728e51060f0SSean Hefty goto reject; 1729e51060f0SSean Hefty 1730e51060f0SSean Hefty return 0; 1731e51060f0SSean Hefty reject: 1732498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: CONNECT_ERROR: failed to handle reply. status %d\n", ret); 1733c5483388SSean Hefty cma_modify_qp_err(id_priv); 1734e51060f0SSean Hefty ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, 1735e51060f0SSean Hefty NULL, 0, NULL, 0); 1736e51060f0SSean Hefty return ret; 1737e51060f0SSean Hefty } 1738e51060f0SSean Hefty 1739a1b1b61fSSean Hefty static void cma_set_rep_event_data(struct rdma_cm_event *event, 1740a1b1b61fSSean Hefty struct ib_cm_rep_event_param *rep_data, 1741a1b1b61fSSean Hefty void *private_data) 1742a1b1b61fSSean Hefty { 1743a1b1b61fSSean Hefty event->param.conn.private_data = private_data; 1744a1b1b61fSSean Hefty event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; 1745a1b1b61fSSean Hefty event->param.conn.responder_resources = rep_data->responder_resources; 1746a1b1b61fSSean Hefty event->param.conn.initiator_depth = rep_data->initiator_depth; 1747a1b1b61fSSean Hefty event->param.conn.flow_control = rep_data->flow_control; 1748a1b1b61fSSean Hefty event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; 1749a1b1b61fSSean Hefty event->param.conn.srq = rep_data->srq; 1750a1b1b61fSSean Hefty event->param.conn.qp_num = rep_data->remote_qpn; 1751a1b1b61fSSean Hefty } 1752a1b1b61fSSean Hefty 1753e51060f0SSean Hefty static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) 1754e51060f0SSean Hefty { 1755e51060f0SSean Hefty struct rdma_id_private *id_priv = cm_id->context; 1756a1b1b61fSSean Hefty struct rdma_cm_event event; 1757a1b1b61fSSean Hefty int ret = 0; 1758e51060f0SSean Hefty 175937e07cdaSBart Van Assche mutex_lock(&id_priv->handler_mutex); 176038ca83a5SAmir Vadai if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && 176137e07cdaSBart Van Assche id_priv->state != RDMA_CM_CONNECT) || 176238ca83a5SAmir Vadai (ib_event->event == IB_CM_TIMEWAIT_EXIT && 176337e07cdaSBart Van Assche id_priv->state != RDMA_CM_DISCONNECT)) 176437e07cdaSBart Van Assche goto out; 1765e51060f0SSean Hefty 1766a1b1b61fSSean Hefty memset(&event, 0, sizeof event); 1767e51060f0SSean Hefty switch (ib_event->event) { 1768e51060f0SSean Hefty case IB_CM_REQ_ERROR: 1769e51060f0SSean Hefty case IB_CM_REP_ERROR: 1770a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_UNREACHABLE; 1771a1b1b61fSSean Hefty event.status = -ETIMEDOUT; 1772e51060f0SSean Hefty break; 1773e51060f0SSean Hefty case IB_CM_REP_RECEIVED: 177461c0ddbeSMoni Shoua if (cma_comp(id_priv, RDMA_CM_CONNECT) && 177561c0ddbeSMoni Shoua (id_priv->id.qp_type != IB_QPT_UD)) 177661c0ddbeSMoni Shoua ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); 177701602f11SSean Hefty if (id_priv->id.qp) { 1778a1b1b61fSSean Hefty event.status = cma_rep_recv(id_priv); 1779a1b1b61fSSean Hefty event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : 1780e51060f0SSean Hefty RDMA_CM_EVENT_ESTABLISHED; 178101602f11SSean Hefty } else { 1782a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; 178301602f11SSean Hefty } 1784a1b1b61fSSean Hefty cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, 1785a1b1b61fSSean Hefty ib_event->private_data); 1786e51060f0SSean Hefty break; 1787e51060f0SSean Hefty case IB_CM_RTU_RECEIVED: 17880fe313b0SSean Hefty case IB_CM_USER_ESTABLISHED: 17890fe313b0SSean Hefty event.event = RDMA_CM_EVENT_ESTABLISHED; 1790e51060f0SSean Hefty break; 1791e51060f0SSean Hefty case IB_CM_DREQ_ERROR: 1792a1b1b61fSSean Hefty event.status = -ETIMEDOUT; /* fall through */ 1793e51060f0SSean Hefty case IB_CM_DREQ_RECEIVED: 1794e51060f0SSean Hefty case IB_CM_DREP_RECEIVED: 1795550e5ca7SNir Muchtar if (!cma_comp_exch(id_priv, RDMA_CM_CONNECT, 1796550e5ca7SNir Muchtar RDMA_CM_DISCONNECT)) 1797e51060f0SSean Hefty goto out; 1798a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_DISCONNECTED; 1799e51060f0SSean Hefty break; 1800e51060f0SSean Hefty case IB_CM_TIMEWAIT_EXIT: 180138ca83a5SAmir Vadai event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; 180238ca83a5SAmir Vadai break; 1803e51060f0SSean Hefty case IB_CM_MRA_RECEIVED: 1804e51060f0SSean Hefty /* ignore event */ 1805e51060f0SSean Hefty goto out; 1806e51060f0SSean Hefty case IB_CM_REJ_RECEIVED: 1807498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: REJECTED: %s\n", rdma_reject_msg(&id_priv->id, 1808498683c6SMoni Shoua ib_event->param.rej_rcvd.reason)); 1809c5483388SSean Hefty cma_modify_qp_err(id_priv); 1810a1b1b61fSSean Hefty event.status = ib_event->param.rej_rcvd.reason; 1811a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_REJECTED; 1812a1b1b61fSSean Hefty event.param.conn.private_data = ib_event->private_data; 1813a1b1b61fSSean Hefty event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; 1814e51060f0SSean Hefty break; 1815e51060f0SSean Hefty default: 1816aba25a3eSParav Pandit pr_err("RDMA CMA: unexpected IB CM event: %d\n", 1817e51060f0SSean Hefty ib_event->event); 1818e51060f0SSean Hefty goto out; 1819e51060f0SSean Hefty } 1820e51060f0SSean Hefty 1821a1b1b61fSSean Hefty ret = id_priv->id.event_handler(&id_priv->id, &event); 1822e51060f0SSean Hefty if (ret) { 1823e51060f0SSean Hefty /* Destroy the CM ID by returning a non-zero value. */ 1824e51060f0SSean Hefty id_priv->cm_id.ib = NULL; 1825550e5ca7SNir Muchtar cma_exch(id_priv, RDMA_CM_DESTROYING); 1826de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 1827e51060f0SSean Hefty rdma_destroy_id(&id_priv->id); 1828e51060f0SSean Hefty return ret; 1829e51060f0SSean Hefty } 1830e51060f0SSean Hefty out: 1831de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 1832e51060f0SSean Hefty return ret; 1833e51060f0SSean Hefty } 1834e51060f0SSean Hefty 1835628e5f6dSSean Hefty static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, 18360b3ca768SHaggai Eran struct ib_cm_event *ib_event, 18370b3ca768SHaggai Eran struct net_device *net_dev) 1838e51060f0SSean Hefty { 183900313983SSteve Wise struct rdma_id_private *listen_id_priv; 1840e51060f0SSean Hefty struct rdma_id_private *id_priv; 1841e51060f0SSean Hefty struct rdma_cm_id *id; 1842e51060f0SSean Hefty struct rdma_route *rt; 18430c505f70SHaggai Eran const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; 18449fdca4daSDasaratharaman Chandramouli struct sa_path_rec *path = ib_event->param.req_rcvd.primary_path; 1845d3957b86SMajd Dibbiny const __be64 service_id = 1846d3957b86SMajd Dibbiny ib_event->param.req_rcvd.primary_path->service_id; 184764c5e613SOr Gerlitz int ret; 1848e51060f0SSean Hefty 184900313983SSteve Wise listen_id_priv = container_of(listen_id, struct rdma_id_private, id); 185000313983SSteve Wise id = __rdma_create_id(listen_id->route.addr.dev_addr.net, 1851fa20105eSGuy Shapiro listen_id->event_handler, listen_id->context, 185200313983SSteve Wise listen_id->ps, ib_event->param.req_rcvd.qp_type, 185300313983SSteve Wise listen_id_priv->res.kern_name); 18543f168d2bSKrishna Kumar if (IS_ERR(id)) 18550c9361fcSJack Morgenstein return NULL; 18563f168d2bSKrishna Kumar 1857f4753834SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 18580c505f70SHaggai Eran if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, 18590c505f70SHaggai Eran (struct sockaddr *)&id->route.addr.dst_addr, 18600c505f70SHaggai Eran listen_id, ib_event, ss_family, service_id)) 1861fbaa1a6dSSean Hefty goto err; 18623f168d2bSKrishna Kumar 18633f168d2bSKrishna Kumar rt = &id->route; 18643f168d2bSKrishna Kumar rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; 18656da2ec56SKees Cook rt->path_rec = kmalloc_array(rt->num_paths, sizeof(*rt->path_rec), 18663f168d2bSKrishna Kumar GFP_KERNEL); 18673f168d2bSKrishna Kumar if (!rt->path_rec) 18680c9361fcSJack Morgenstein goto err; 18693f168d2bSKrishna Kumar 18709fdca4daSDasaratharaman Chandramouli rt->path_rec[0] = *path; 1871e51060f0SSean Hefty if (rt->num_paths == 2) 1872e51060f0SSean Hefty rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; 1873e51060f0SSean Hefty 18740b3ca768SHaggai Eran if (net_dev) { 1875e08ce2e8SYuval Shaia rdma_copy_addr(&rt->addr.dev_addr, net_dev, NULL); 18760b3ca768SHaggai Eran } else { 1877b8cab5daSHaggai Eran if (!cma_protocol_roce(listen_id) && 1878b8cab5daSHaggai Eran cma_any_addr(cma_src_addr(id_priv))) { 1879b8cab5daSHaggai Eran rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND; 1880b8cab5daSHaggai Eran rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid); 1881b8cab5daSHaggai Eran ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey)); 1882b8cab5daSHaggai Eran } else if (!cma_any_addr(cma_src_addr(id_priv))) { 1883b8cab5daSHaggai Eran ret = cma_translate_addr(cma_src_addr(id_priv), &rt->addr.dev_addr); 1884b8cab5daSHaggai Eran if (ret) 1885b8cab5daSHaggai Eran goto err; 1886b8cab5daSHaggai Eran } 18876f8372b6SSean Hefty } 18886f8372b6SSean Hefty rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); 1889e51060f0SSean Hefty 1890550e5ca7SNir Muchtar id_priv->state = RDMA_CM_CONNECT; 1891e51060f0SSean Hefty return id_priv; 18923f168d2bSKrishna Kumar 18933f168d2bSKrishna Kumar err: 18940c9361fcSJack Morgenstein rdma_destroy_id(id); 1895e51060f0SSean Hefty return NULL; 1896e51060f0SSean Hefty } 1897e51060f0SSean Hefty 1898628e5f6dSSean Hefty static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, 18990b3ca768SHaggai Eran struct ib_cm_event *ib_event, 19000b3ca768SHaggai Eran struct net_device *net_dev) 1901628e5f6dSSean Hefty { 190200313983SSteve Wise struct rdma_id_private *listen_id_priv; 1903628e5f6dSSean Hefty struct rdma_id_private *id_priv; 1904628e5f6dSSean Hefty struct rdma_cm_id *id; 19050c505f70SHaggai Eran const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; 1906fa20105eSGuy Shapiro struct net *net = listen_id->route.addr.dev_addr.net; 1907628e5f6dSSean Hefty int ret; 1908628e5f6dSSean Hefty 190900313983SSteve Wise listen_id_priv = container_of(listen_id, struct rdma_id_private, id); 191000313983SSteve Wise id = __rdma_create_id(net, listen_id->event_handler, listen_id->context, 191100313983SSteve Wise listen_id->ps, IB_QPT_UD, 191200313983SSteve Wise listen_id_priv->res.kern_name); 1913628e5f6dSSean Hefty if (IS_ERR(id)) 1914628e5f6dSSean Hefty return NULL; 1915628e5f6dSSean Hefty 1916f4753834SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 19170c505f70SHaggai Eran if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, 19180c505f70SHaggai Eran (struct sockaddr *)&id->route.addr.dst_addr, 19190c505f70SHaggai Eran listen_id, ib_event, ss_family, 19200c505f70SHaggai Eran ib_event->param.sidr_req_rcvd.service_id)) 1921628e5f6dSSean Hefty goto err; 1922628e5f6dSSean Hefty 19230b3ca768SHaggai Eran if (net_dev) { 1924e08ce2e8SYuval Shaia rdma_copy_addr(&id->route.addr.dev_addr, net_dev, NULL); 19250b3ca768SHaggai Eran } else { 1926b8cab5daSHaggai Eran if (!cma_any_addr(cma_src_addr(id_priv))) { 1927b8cab5daSHaggai Eran ret = cma_translate_addr(cma_src_addr(id_priv), 19280b3ca768SHaggai Eran &id->route.addr.dev_addr); 1929b8cab5daSHaggai Eran if (ret) 1930b8cab5daSHaggai Eran goto err; 1931b8cab5daSHaggai Eran } 19326f8372b6SSean Hefty } 1933628e5f6dSSean Hefty 1934550e5ca7SNir Muchtar id_priv->state = RDMA_CM_CONNECT; 1935628e5f6dSSean Hefty return id_priv; 1936628e5f6dSSean Hefty err: 1937628e5f6dSSean Hefty rdma_destroy_id(id); 1938628e5f6dSSean Hefty return NULL; 1939628e5f6dSSean Hefty } 1940628e5f6dSSean Hefty 1941a1b1b61fSSean Hefty static void cma_set_req_event_data(struct rdma_cm_event *event, 1942a1b1b61fSSean Hefty struct ib_cm_req_event_param *req_data, 1943a1b1b61fSSean Hefty void *private_data, int offset) 1944a1b1b61fSSean Hefty { 1945a1b1b61fSSean Hefty event->param.conn.private_data = private_data + offset; 1946a1b1b61fSSean Hefty event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; 1947a1b1b61fSSean Hefty event->param.conn.responder_resources = req_data->responder_resources; 1948a1b1b61fSSean Hefty event->param.conn.initiator_depth = req_data->initiator_depth; 1949a1b1b61fSSean Hefty event->param.conn.flow_control = req_data->flow_control; 1950a1b1b61fSSean Hefty event->param.conn.retry_count = req_data->retry_count; 1951a1b1b61fSSean Hefty event->param.conn.rnr_retry_count = req_data->rnr_retry_count; 1952a1b1b61fSSean Hefty event->param.conn.srq = req_data->srq; 1953a1b1b61fSSean Hefty event->param.conn.qp_num = req_data->remote_qpn; 1954a1b1b61fSSean Hefty } 1955a1b1b61fSSean Hefty 19569595480cSHefty, Sean static int cma_check_req_qp_type(struct rdma_cm_id *id, struct ib_cm_event *ib_event) 19579595480cSHefty, Sean { 19584dd81e89SSean Hefty return (((ib_event->event == IB_CM_REQ_RECEIVED) && 19599595480cSHefty, Sean (ib_event->param.req_rcvd.qp_type == id->qp_type)) || 19609595480cSHefty, Sean ((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) && 19619595480cSHefty, Sean (id->qp_type == IB_QPT_UD)) || 19629595480cSHefty, Sean (!id->qp_type)); 19639595480cSHefty, Sean } 19649595480cSHefty, Sean 1965e51060f0SSean Hefty static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) 1966e51060f0SSean Hefty { 196737e07cdaSBart Van Assche struct rdma_id_private *listen_id, *conn_id = NULL; 1968a1b1b61fSSean Hefty struct rdma_cm_event event; 19690b3ca768SHaggai Eran struct net_device *net_dev; 1970c0b64f58SBart Van Assche u8 offset; 1971c0b64f58SBart Van Assche int ret; 1972e51060f0SSean Hefty 19730b3ca768SHaggai Eran listen_id = cma_id_from_event(cm_id, ib_event, &net_dev); 19744c21b5bcSHaggai Eran if (IS_ERR(listen_id)) 19754c21b5bcSHaggai Eran return PTR_ERR(listen_id); 19764c21b5bcSHaggai Eran 19770b3ca768SHaggai Eran if (!cma_check_req_qp_type(&listen_id->id, ib_event)) { 19780b3ca768SHaggai Eran ret = -EINVAL; 19790b3ca768SHaggai Eran goto net_dev_put; 19800b3ca768SHaggai Eran } 19819595480cSHefty, Sean 198237e07cdaSBart Van Assche mutex_lock(&listen_id->handler_mutex); 198337e07cdaSBart Van Assche if (listen_id->state != RDMA_CM_LISTEN) { 19840b3ca768SHaggai Eran ret = -ECONNABORTED; 198537e07cdaSBart Van Assche goto err1; 19860b3ca768SHaggai Eran } 1987e51060f0SSean Hefty 1988628e5f6dSSean Hefty memset(&event, 0, sizeof event); 1989e8160e15SSean Hefty offset = cma_user_data_offset(listen_id); 1990628e5f6dSSean Hefty event.event = RDMA_CM_EVENT_CONNECT_REQUEST; 19919595480cSHefty, Sean if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) { 19920b3ca768SHaggai Eran conn_id = cma_new_udp_id(&listen_id->id, ib_event, net_dev); 1993628e5f6dSSean Hefty event.param.ud.private_data = ib_event->private_data + offset; 1994628e5f6dSSean Hefty event.param.ud.private_data_len = 1995628e5f6dSSean Hefty IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; 1996628e5f6dSSean Hefty } else { 19970b3ca768SHaggai Eran conn_id = cma_new_conn_id(&listen_id->id, ib_event, net_dev); 1998628e5f6dSSean Hefty cma_set_req_event_data(&event, &ib_event->param.req_rcvd, 1999628e5f6dSSean Hefty ib_event->private_data, offset); 2000628e5f6dSSean Hefty } 2001e51060f0SSean Hefty if (!conn_id) { 2002e51060f0SSean Hefty ret = -ENOMEM; 2003b6cec8aaSSean Hefty goto err1; 2004e51060f0SSean Hefty } 2005e51060f0SSean Hefty 2006de910bd9SOr Gerlitz mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); 2007be9130ccSDoug Ledford ret = cma_acquire_dev(conn_id, listen_id); 2008a1a733f6SKrishna Kumar if (ret) 2009b6cec8aaSSean Hefty goto err2; 2010e51060f0SSean Hefty 2011e51060f0SSean Hefty conn_id->cm_id.ib = cm_id; 2012e51060f0SSean Hefty cm_id->context = conn_id; 2013e51060f0SSean Hefty cm_id->cm_handler = cma_ib_handler; 2014e51060f0SSean Hefty 201525ae21a1SSean Hefty /* 201625ae21a1SSean Hefty * Protect against the user destroying conn_id from another thread 201725ae21a1SSean Hefty * until we're done accessing it. 201825ae21a1SSean Hefty */ 201925ae21a1SSean Hefty atomic_inc(&conn_id->refcount); 2020a1b1b61fSSean Hefty ret = conn_id->id.event_handler(&conn_id->id, &event); 2021b6cec8aaSSean Hefty if (ret) 2022b6cec8aaSSean Hefty goto err3; 2023ead595aeSSean Hefty /* 2024ead595aeSSean Hefty * Acquire mutex to prevent user executing rdma_destroy_id() 2025ead595aeSSean Hefty * while we're accessing the cm_id. 2026ead595aeSSean Hefty */ 2027ead595aeSSean Hefty mutex_lock(&lock); 2028dd5f03beSMatan Barak if (cma_comp(conn_id, RDMA_CM_CONNECT) && 2029dd5f03beSMatan Barak (conn_id->id.qp_type != IB_QPT_UD)) 2030ead595aeSSean Hefty ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); 2031ead595aeSSean Hefty mutex_unlock(&lock); 2032de910bd9SOr Gerlitz mutex_unlock(&conn_id->handler_mutex); 2033b6cec8aaSSean Hefty mutex_unlock(&listen_id->handler_mutex); 203425ae21a1SSean Hefty cma_deref_id(conn_id); 20350b3ca768SHaggai Eran if (net_dev) 20360b3ca768SHaggai Eran dev_put(net_dev); 2037b6cec8aaSSean Hefty return 0; 2038a1a733f6SKrishna Kumar 2039b6cec8aaSSean Hefty err3: 2040b6cec8aaSSean Hefty cma_deref_id(conn_id); 2041e51060f0SSean Hefty /* Destroy the CM ID by returning a non-zero value. */ 2042e51060f0SSean Hefty conn_id->cm_id.ib = NULL; 2043b6cec8aaSSean Hefty err2: 2044550e5ca7SNir Muchtar cma_exch(conn_id, RDMA_CM_DESTROYING); 2045de910bd9SOr Gerlitz mutex_unlock(&conn_id->handler_mutex); 2046b6cec8aaSSean Hefty err1: 2047de910bd9SOr Gerlitz mutex_unlock(&listen_id->handler_mutex); 2048b6cec8aaSSean Hefty if (conn_id) 2049b6cec8aaSSean Hefty rdma_destroy_id(&conn_id->id); 20500b3ca768SHaggai Eran 20510b3ca768SHaggai Eran net_dev_put: 20520b3ca768SHaggai Eran if (net_dev) 20530b3ca768SHaggai Eran dev_put(net_dev); 20540b3ca768SHaggai Eran 2055e51060f0SSean Hefty return ret; 2056e51060f0SSean Hefty } 2057e51060f0SSean Hefty 2058cf53936fSSean Hefty __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr) 2059e51060f0SSean Hefty { 2060496ce3ceSSean Hefty if (addr->sa_family == AF_IB) 2061496ce3ceSSean Hefty return ((struct sockaddr_ib *) addr)->sib_sid; 2062496ce3ceSSean Hefty 2063cf53936fSSean Hefty return cpu_to_be64(((u64)id->ps << 16) + be16_to_cpu(cma_port(addr))); 2064e51060f0SSean Hefty } 2065cf53936fSSean Hefty EXPORT_SYMBOL(rdma_get_service_id); 2066e51060f0SSean Hefty 2067411460acSParav Pandit void rdma_read_gids(struct rdma_cm_id *cm_id, union ib_gid *sgid, 2068411460acSParav Pandit union ib_gid *dgid) 2069411460acSParav Pandit { 2070411460acSParav Pandit struct rdma_addr *addr = &cm_id->route.addr; 2071411460acSParav Pandit 2072411460acSParav Pandit if (!cm_id->device) { 2073411460acSParav Pandit if (sgid) 2074411460acSParav Pandit memset(sgid, 0, sizeof(*sgid)); 2075411460acSParav Pandit if (dgid) 2076411460acSParav Pandit memset(dgid, 0, sizeof(*dgid)); 2077411460acSParav Pandit return; 2078411460acSParav Pandit } 2079411460acSParav Pandit 2080411460acSParav Pandit if (rdma_protocol_roce(cm_id->device, cm_id->port_num)) { 2081411460acSParav Pandit if (sgid) 2082411460acSParav Pandit rdma_ip2gid((struct sockaddr *)&addr->src_addr, sgid); 2083411460acSParav Pandit if (dgid) 2084411460acSParav Pandit rdma_ip2gid((struct sockaddr *)&addr->dst_addr, dgid); 2085411460acSParav Pandit } else { 2086411460acSParav Pandit if (sgid) 2087411460acSParav Pandit rdma_addr_get_sgid(&addr->dev_addr, sgid); 2088411460acSParav Pandit if (dgid) 2089411460acSParav Pandit rdma_addr_get_dgid(&addr->dev_addr, dgid); 2090411460acSParav Pandit } 2091411460acSParav Pandit } 2092411460acSParav Pandit EXPORT_SYMBOL(rdma_read_gids); 2093411460acSParav Pandit 209407ebafbaSTom Tucker static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) 209507ebafbaSTom Tucker { 209607ebafbaSTom Tucker struct rdma_id_private *id_priv = iw_id->context; 2097a1b1b61fSSean Hefty struct rdma_cm_event event; 209807ebafbaSTom Tucker int ret = 0; 209924d44a39SSteve Wise struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; 210024d44a39SSteve Wise struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; 210107ebafbaSTom Tucker 210237e07cdaSBart Van Assche mutex_lock(&id_priv->handler_mutex); 210337e07cdaSBart Van Assche if (id_priv->state != RDMA_CM_CONNECT) 210437e07cdaSBart Van Assche goto out; 210507ebafbaSTom Tucker 2106be65f086SSean Hefty memset(&event, 0, sizeof event); 210707ebafbaSTom Tucker switch (iw_event->event) { 210807ebafbaSTom Tucker case IW_CM_EVENT_CLOSE: 2109a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_DISCONNECTED; 211007ebafbaSTom Tucker break; 211107ebafbaSTom Tucker case IW_CM_EVENT_CONNECT_REPLY: 211224d44a39SSteve Wise memcpy(cma_src_addr(id_priv), laddr, 211324d44a39SSteve Wise rdma_addr_size(laddr)); 211424d44a39SSteve Wise memcpy(cma_dst_addr(id_priv), raddr, 211524d44a39SSteve Wise rdma_addr_size(raddr)); 2116881a045fSSteve Wise switch (iw_event->status) { 2117881a045fSSteve Wise case 0: 2118a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_ESTABLISHED; 21193ebeebc3SKumar Sanghvi event.param.conn.initiator_depth = iw_event->ird; 21203ebeebc3SKumar Sanghvi event.param.conn.responder_resources = iw_event->ord; 212107ebafbaSTom Tucker break; 2122881a045fSSteve Wise case -ECONNRESET: 2123881a045fSSteve Wise case -ECONNREFUSED: 2124881a045fSSteve Wise event.event = RDMA_CM_EVENT_REJECTED; 2125881a045fSSteve Wise break; 2126881a045fSSteve Wise case -ETIMEDOUT: 2127881a045fSSteve Wise event.event = RDMA_CM_EVENT_UNREACHABLE; 2128881a045fSSteve Wise break; 2129881a045fSSteve Wise default: 2130881a045fSSteve Wise event.event = RDMA_CM_EVENT_CONNECT_ERROR; 2131881a045fSSteve Wise break; 2132881a045fSSteve Wise } 2133881a045fSSteve Wise break; 213407ebafbaSTom Tucker case IW_CM_EVENT_ESTABLISHED: 2135a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_ESTABLISHED; 21363ebeebc3SKumar Sanghvi event.param.conn.initiator_depth = iw_event->ird; 21373ebeebc3SKumar Sanghvi event.param.conn.responder_resources = iw_event->ord; 213807ebafbaSTom Tucker break; 213907ebafbaSTom Tucker default: 2140671a6cc2SLeon Romanovsky goto out; 214107ebafbaSTom Tucker } 214207ebafbaSTom Tucker 2143a1b1b61fSSean Hefty event.status = iw_event->status; 2144a1b1b61fSSean Hefty event.param.conn.private_data = iw_event->private_data; 2145a1b1b61fSSean Hefty event.param.conn.private_data_len = iw_event->private_data_len; 2146a1b1b61fSSean Hefty ret = id_priv->id.event_handler(&id_priv->id, &event); 214707ebafbaSTom Tucker if (ret) { 214807ebafbaSTom Tucker /* Destroy the CM ID by returning a non-zero value. */ 214907ebafbaSTom Tucker id_priv->cm_id.iw = NULL; 2150550e5ca7SNir Muchtar cma_exch(id_priv, RDMA_CM_DESTROYING); 2151de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 215207ebafbaSTom Tucker rdma_destroy_id(&id_priv->id); 215307ebafbaSTom Tucker return ret; 215407ebafbaSTom Tucker } 215507ebafbaSTom Tucker 215637e07cdaSBart Van Assche out: 2157de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 215807ebafbaSTom Tucker return ret; 215907ebafbaSTom Tucker } 216007ebafbaSTom Tucker 216107ebafbaSTom Tucker static int iw_conn_req_handler(struct iw_cm_id *cm_id, 216207ebafbaSTom Tucker struct iw_cm_event *iw_event) 216307ebafbaSTom Tucker { 216407ebafbaSTom Tucker struct rdma_cm_id *new_cm_id; 216507ebafbaSTom Tucker struct rdma_id_private *listen_id, *conn_id; 2166a1b1b61fSSean Hefty struct rdma_cm_event event; 216737e07cdaSBart Van Assche int ret = -ECONNABORTED; 216824d44a39SSteve Wise struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; 216924d44a39SSteve Wise struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; 217007ebafbaSTom Tucker 217107ebafbaSTom Tucker listen_id = cm_id->context; 217237e07cdaSBart Van Assche 217337e07cdaSBart Van Assche mutex_lock(&listen_id->handler_mutex); 217437e07cdaSBart Van Assche if (listen_id->state != RDMA_CM_LISTEN) 217537e07cdaSBart Van Assche goto out; 217607ebafbaSTom Tucker 217707ebafbaSTom Tucker /* Create a new RDMA id for the new IW CM ID */ 217800313983SSteve Wise new_cm_id = __rdma_create_id(listen_id->id.route.addr.dev_addr.net, 2179fa20105eSGuy Shapiro listen_id->id.event_handler, 218007ebafbaSTom Tucker listen_id->id.context, 218100313983SSteve Wise RDMA_PS_TCP, IB_QPT_RC, 218200313983SSteve Wise listen_id->res.kern_name); 218310f32065SJulia Lawall if (IS_ERR(new_cm_id)) { 218407ebafbaSTom Tucker ret = -ENOMEM; 218507ebafbaSTom Tucker goto out; 218607ebafbaSTom Tucker } 218707ebafbaSTom Tucker conn_id = container_of(new_cm_id, struct rdma_id_private, id); 2188de910bd9SOr Gerlitz mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); 2189550e5ca7SNir Muchtar conn_id->state = RDMA_CM_CONNECT; 219007ebafbaSTom Tucker 2191575c7e58SParav Pandit ret = rdma_translate_ip(laddr, &conn_id->id.route.addr.dev_addr); 219207ebafbaSTom Tucker if (ret) { 2193de910bd9SOr Gerlitz mutex_unlock(&conn_id->handler_mutex); 219407ebafbaSTom Tucker rdma_destroy_id(new_cm_id); 219507ebafbaSTom Tucker goto out; 219607ebafbaSTom Tucker } 219707ebafbaSTom Tucker 2198be9130ccSDoug Ledford ret = cma_acquire_dev(conn_id, listen_id); 219907ebafbaSTom Tucker if (ret) { 2200de910bd9SOr Gerlitz mutex_unlock(&conn_id->handler_mutex); 220107ebafbaSTom Tucker rdma_destroy_id(new_cm_id); 220207ebafbaSTom Tucker goto out; 220307ebafbaSTom Tucker } 220407ebafbaSTom Tucker 220507ebafbaSTom Tucker conn_id->cm_id.iw = cm_id; 220607ebafbaSTom Tucker cm_id->context = conn_id; 220707ebafbaSTom Tucker cm_id->cm_handler = cma_iw_handler; 220807ebafbaSTom Tucker 220924d44a39SSteve Wise memcpy(cma_src_addr(conn_id), laddr, rdma_addr_size(laddr)); 221024d44a39SSteve Wise memcpy(cma_dst_addr(conn_id), raddr, rdma_addr_size(raddr)); 221107ebafbaSTom Tucker 2212a1b1b61fSSean Hefty memset(&event, 0, sizeof event); 2213a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_CONNECT_REQUEST; 2214a1b1b61fSSean Hefty event.param.conn.private_data = iw_event->private_data; 2215a1b1b61fSSean Hefty event.param.conn.private_data_len = iw_event->private_data_len; 22163ebeebc3SKumar Sanghvi event.param.conn.initiator_depth = iw_event->ird; 22173ebeebc3SKumar Sanghvi event.param.conn.responder_resources = iw_event->ord; 221825ae21a1SSean Hefty 221925ae21a1SSean Hefty /* 222025ae21a1SSean Hefty * Protect against the user destroying conn_id from another thread 222125ae21a1SSean Hefty * until we're done accessing it. 222225ae21a1SSean Hefty */ 222325ae21a1SSean Hefty atomic_inc(&conn_id->refcount); 2224a1b1b61fSSean Hefty ret = conn_id->id.event_handler(&conn_id->id, &event); 222507ebafbaSTom Tucker if (ret) { 222607ebafbaSTom Tucker /* User wants to destroy the CM ID */ 222707ebafbaSTom Tucker conn_id->cm_id.iw = NULL; 2228550e5ca7SNir Muchtar cma_exch(conn_id, RDMA_CM_DESTROYING); 2229de910bd9SOr Gerlitz mutex_unlock(&conn_id->handler_mutex); 223025ae21a1SSean Hefty cma_deref_id(conn_id); 223107ebafbaSTom Tucker rdma_destroy_id(&conn_id->id); 2232de910bd9SOr Gerlitz goto out; 223307ebafbaSTom Tucker } 223407ebafbaSTom Tucker 2235de910bd9SOr Gerlitz mutex_unlock(&conn_id->handler_mutex); 223625ae21a1SSean Hefty cma_deref_id(conn_id); 2237de910bd9SOr Gerlitz 223807ebafbaSTom Tucker out: 2239de910bd9SOr Gerlitz mutex_unlock(&listen_id->handler_mutex); 224007ebafbaSTom Tucker return ret; 224107ebafbaSTom Tucker } 224207ebafbaSTom Tucker 2243e51060f0SSean Hefty static int cma_ib_listen(struct rdma_id_private *id_priv) 2244e51060f0SSean Hefty { 2245e51060f0SSean Hefty struct sockaddr *addr; 22460c9361fcSJack Morgenstein struct ib_cm_id *id; 2247e51060f0SSean Hefty __be64 svc_id; 2248e51060f0SSean Hefty 2249f4753834SSean Hefty addr = cma_src_addr(id_priv); 2250cf53936fSSean Hefty svc_id = rdma_get_service_id(&id_priv->id, addr); 225151efe394SHaggai Eran id = ib_cm_insert_listen(id_priv->id.device, cma_req_handler, svc_id); 225251efe394SHaggai Eran if (IS_ERR(id)) 225351efe394SHaggai Eran return PTR_ERR(id); 225451efe394SHaggai Eran id_priv->cm_id.ib = id; 2255e51060f0SSean Hefty 225651efe394SHaggai Eran return 0; 2257e51060f0SSean Hefty } 2258e51060f0SSean Hefty 225907ebafbaSTom Tucker static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) 226007ebafbaSTom Tucker { 226107ebafbaSTom Tucker int ret; 22620c9361fcSJack Morgenstein struct iw_cm_id *id; 226307ebafbaSTom Tucker 22640c9361fcSJack Morgenstein id = iw_create_cm_id(id_priv->id.device, 226507ebafbaSTom Tucker iw_conn_req_handler, 226607ebafbaSTom Tucker id_priv); 22670c9361fcSJack Morgenstein if (IS_ERR(id)) 22680c9361fcSJack Morgenstein return PTR_ERR(id); 22690c9361fcSJack Morgenstein 227068cdba06SSteve Wise id->tos = id_priv->tos; 22710c9361fcSJack Morgenstein id_priv->cm_id.iw = id; 227207ebafbaSTom Tucker 227324d44a39SSteve Wise memcpy(&id_priv->cm_id.iw->local_addr, cma_src_addr(id_priv), 227424d44a39SSteve Wise rdma_addr_size(cma_src_addr(id_priv))); 227507ebafbaSTom Tucker 227607ebafbaSTom Tucker ret = iw_cm_listen(id_priv->cm_id.iw, backlog); 227707ebafbaSTom Tucker 227807ebafbaSTom Tucker if (ret) { 227907ebafbaSTom Tucker iw_destroy_cm_id(id_priv->cm_id.iw); 228007ebafbaSTom Tucker id_priv->cm_id.iw = NULL; 228107ebafbaSTom Tucker } 228207ebafbaSTom Tucker 228307ebafbaSTom Tucker return ret; 228407ebafbaSTom Tucker } 228507ebafbaSTom Tucker 2286e51060f0SSean Hefty static int cma_listen_handler(struct rdma_cm_id *id, 2287e51060f0SSean Hefty struct rdma_cm_event *event) 2288e51060f0SSean Hefty { 2289e51060f0SSean Hefty struct rdma_id_private *id_priv = id->context; 2290e51060f0SSean Hefty 2291e51060f0SSean Hefty id->context = id_priv->id.context; 2292e51060f0SSean Hefty id->event_handler = id_priv->id.event_handler; 2293e51060f0SSean Hefty return id_priv->id.event_handler(id, event); 2294e51060f0SSean Hefty } 2295e51060f0SSean Hefty 2296e51060f0SSean Hefty static void cma_listen_on_dev(struct rdma_id_private *id_priv, 2297e51060f0SSean Hefty struct cma_device *cma_dev) 2298e51060f0SSean Hefty { 2299e51060f0SSean Hefty struct rdma_id_private *dev_id_priv; 2300e51060f0SSean Hefty struct rdma_cm_id *id; 2301fa20105eSGuy Shapiro struct net *net = id_priv->id.route.addr.dev_addr.net; 2302e51060f0SSean Hefty int ret; 2303e51060f0SSean Hefty 230472219ceaSMichael Wang if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1)) 230594d0c939SSean Hefty return; 230694d0c939SSean Hefty 230700313983SSteve Wise id = __rdma_create_id(net, cma_listen_handler, id_priv, id_priv->id.ps, 230800313983SSteve Wise id_priv->id.qp_type, id_priv->res.kern_name); 2309e51060f0SSean Hefty if (IS_ERR(id)) 2310e51060f0SSean Hefty return; 2311e51060f0SSean Hefty 2312e51060f0SSean Hefty dev_id_priv = container_of(id, struct rdma_id_private, id); 2313e51060f0SSean Hefty 2314550e5ca7SNir Muchtar dev_id_priv->state = RDMA_CM_ADDR_BOUND; 2315f4753834SSean Hefty memcpy(cma_src_addr(dev_id_priv), cma_src_addr(id_priv), 2316f4753834SSean Hefty rdma_addr_size(cma_src_addr(id_priv))); 2317e51060f0SSean Hefty 2318045959dbSMatan Barak _cma_attach_to_dev(dev_id_priv, cma_dev); 2319e51060f0SSean Hefty list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); 2320d02d1f53SSean Hefty atomic_inc(&id_priv->refcount); 2321d02d1f53SSean Hefty dev_id_priv->internal_id = 1; 23225b0ec991SSean Hefty dev_id_priv->afonly = id_priv->afonly; 2323e51060f0SSean Hefty 2324e51060f0SSean Hefty ret = rdma_listen(id, id_priv->backlog); 2325e51060f0SSean Hefty if (ret) 2326aba25a3eSParav Pandit pr_warn("RDMA CMA: cma_listen_on_dev, error %d, listening on device %s\n", 2327aba25a3eSParav Pandit ret, cma_dev->device->name); 2328e51060f0SSean Hefty } 2329e51060f0SSean Hefty 2330e51060f0SSean Hefty static void cma_listen_on_all(struct rdma_id_private *id_priv) 2331e51060f0SSean Hefty { 2332e51060f0SSean Hefty struct cma_device *cma_dev; 2333e51060f0SSean Hefty 2334e51060f0SSean Hefty mutex_lock(&lock); 2335e51060f0SSean Hefty list_add_tail(&id_priv->list, &listen_any_list); 2336e51060f0SSean Hefty list_for_each_entry(cma_dev, &dev_list, list) 2337e51060f0SSean Hefty cma_listen_on_dev(id_priv, cma_dev); 2338e51060f0SSean Hefty mutex_unlock(&lock); 2339e51060f0SSean Hefty } 2340e51060f0SSean Hefty 2341a81c994dSSean Hefty void rdma_set_service_type(struct rdma_cm_id *id, int tos) 2342a81c994dSSean Hefty { 2343a81c994dSSean Hefty struct rdma_id_private *id_priv; 2344a81c994dSSean Hefty 2345a81c994dSSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 2346a81c994dSSean Hefty id_priv->tos = (u8) tos; 234789052d78SMajd Dibbiny id_priv->tos_set = true; 2348a81c994dSSean Hefty } 2349a81c994dSSean Hefty EXPORT_SYMBOL(rdma_set_service_type); 2350a81c994dSSean Hefty 2351c2f8fc4eSDasaratharaman Chandramouli static void cma_query_handler(int status, struct sa_path_rec *path_rec, 2352e51060f0SSean Hefty void *context) 2353e51060f0SSean Hefty { 2354e51060f0SSean Hefty struct cma_work *work = context; 2355e51060f0SSean Hefty struct rdma_route *route; 2356e51060f0SSean Hefty 2357e51060f0SSean Hefty route = &work->id->id.route; 2358e51060f0SSean Hefty 2359e51060f0SSean Hefty if (!status) { 2360e51060f0SSean Hefty route->num_paths = 1; 2361e51060f0SSean Hefty *route->path_rec = *path_rec; 2362e51060f0SSean Hefty } else { 2363550e5ca7SNir Muchtar work->old_state = RDMA_CM_ROUTE_QUERY; 2364550e5ca7SNir Muchtar work->new_state = RDMA_CM_ADDR_RESOLVED; 2365e51060f0SSean Hefty work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; 23668f0472d3SSean Hefty work->event.status = status; 2367498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: ROUTE_ERROR: failed to query path. status %d\n", 2368498683c6SMoni Shoua status); 2369e51060f0SSean Hefty } 2370e51060f0SSean Hefty 2371e51060f0SSean Hefty queue_work(cma_wq, &work->work); 2372e51060f0SSean Hefty } 2373e51060f0SSean Hefty 2374e51060f0SSean Hefty static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, 2375e51060f0SSean Hefty struct cma_work *work) 2376e51060f0SSean Hefty { 2377f4753834SSean Hefty struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; 2378c2f8fc4eSDasaratharaman Chandramouli struct sa_path_rec path_rec; 2379a81c994dSSean Hefty ib_sa_comp_mask comp_mask; 2380a81c994dSSean Hefty struct sockaddr_in6 *sin6; 2381f68194caSSean Hefty struct sockaddr_ib *sib; 2382e51060f0SSean Hefty 2383e51060f0SSean Hefty memset(&path_rec, 0, sizeof path_rec); 23844c33bd19SDasaratharaman Chandramouli 23854c33bd19SDasaratharaman Chandramouli if (rdma_cap_opa_ah(id_priv->id.device, id_priv->id.port_num)) 23864c33bd19SDasaratharaman Chandramouli path_rec.rec_type = SA_PATH_REC_TYPE_OPA; 23874c33bd19SDasaratharaman Chandramouli else 23889fdca4daSDasaratharaman Chandramouli path_rec.rec_type = SA_PATH_REC_TYPE_IB; 2389f4753834SSean Hefty rdma_addr_get_sgid(dev_addr, &path_rec.sgid); 2390f4753834SSean Hefty rdma_addr_get_dgid(dev_addr, &path_rec.dgid); 2391f4753834SSean Hefty path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); 2392e51060f0SSean Hefty path_rec.numb_path = 1; 2393962063e6SSean Hefty path_rec.reversible = 1; 2394d3957b86SMajd Dibbiny path_rec.service_id = rdma_get_service_id(&id_priv->id, 2395d3957b86SMajd Dibbiny cma_dst_addr(id_priv)); 2396a81c994dSSean Hefty 2397a81c994dSSean Hefty comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | 2398a81c994dSSean Hefty IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | 2399a81c994dSSean Hefty IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; 2400a81c994dSSean Hefty 2401f68194caSSean Hefty switch (cma_family(id_priv)) { 2402f68194caSSean Hefty case AF_INET: 2403a81c994dSSean Hefty path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); 2404a81c994dSSean Hefty comp_mask |= IB_SA_PATH_REC_QOS_CLASS; 2405f68194caSSean Hefty break; 2406f68194caSSean Hefty case AF_INET6: 2407f4753834SSean Hefty sin6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); 2408a81c994dSSean Hefty path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); 2409a81c994dSSean Hefty comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; 2410f68194caSSean Hefty break; 2411f68194caSSean Hefty case AF_IB: 2412f68194caSSean Hefty sib = (struct sockaddr_ib *) cma_src_addr(id_priv); 2413f68194caSSean Hefty path_rec.traffic_class = (u8) (be32_to_cpu(sib->sib_flowinfo) >> 20); 2414f68194caSSean Hefty comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; 2415f68194caSSean Hefty break; 2416a81c994dSSean Hefty } 2417e51060f0SSean Hefty 2418c1a0b23bSMichael S. Tsirkin id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, 2419e51060f0SSean Hefty id_priv->id.port_num, &path_rec, 2420a81c994dSSean Hefty comp_mask, timeout_ms, 2421a81c994dSSean Hefty GFP_KERNEL, cma_query_handler, 2422a81c994dSSean Hefty work, &id_priv->query); 2423e51060f0SSean Hefty 2424e51060f0SSean Hefty return (id_priv->query_id < 0) ? id_priv->query_id : 0; 2425e51060f0SSean Hefty } 2426e51060f0SSean Hefty 2427c4028958SDavid Howells static void cma_work_handler(struct work_struct *_work) 2428e51060f0SSean Hefty { 2429c4028958SDavid Howells struct cma_work *work = container_of(_work, struct cma_work, work); 2430e51060f0SSean Hefty struct rdma_id_private *id_priv = work->id; 2431e51060f0SSean Hefty int destroy = 0; 2432e51060f0SSean Hefty 2433de910bd9SOr Gerlitz mutex_lock(&id_priv->handler_mutex); 2434e51060f0SSean Hefty if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) 2435e51060f0SSean Hefty goto out; 2436e51060f0SSean Hefty 2437e51060f0SSean Hefty if (id_priv->id.event_handler(&id_priv->id, &work->event)) { 2438550e5ca7SNir Muchtar cma_exch(id_priv, RDMA_CM_DESTROYING); 2439e51060f0SSean Hefty destroy = 1; 2440e51060f0SSean Hefty } 2441e51060f0SSean Hefty out: 2442de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 2443e51060f0SSean Hefty cma_deref_id(id_priv); 2444e51060f0SSean Hefty if (destroy) 2445e51060f0SSean Hefty rdma_destroy_id(&id_priv->id); 2446e51060f0SSean Hefty kfree(work); 2447e51060f0SSean Hefty } 2448e51060f0SSean Hefty 2449dd5bdff8SOr Gerlitz static void cma_ndev_work_handler(struct work_struct *_work) 2450dd5bdff8SOr Gerlitz { 2451dd5bdff8SOr Gerlitz struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); 2452dd5bdff8SOr Gerlitz struct rdma_id_private *id_priv = work->id; 2453dd5bdff8SOr Gerlitz int destroy = 0; 2454dd5bdff8SOr Gerlitz 2455dd5bdff8SOr Gerlitz mutex_lock(&id_priv->handler_mutex); 2456550e5ca7SNir Muchtar if (id_priv->state == RDMA_CM_DESTROYING || 2457550e5ca7SNir Muchtar id_priv->state == RDMA_CM_DEVICE_REMOVAL) 2458dd5bdff8SOr Gerlitz goto out; 2459dd5bdff8SOr Gerlitz 2460dd5bdff8SOr Gerlitz if (id_priv->id.event_handler(&id_priv->id, &work->event)) { 2461550e5ca7SNir Muchtar cma_exch(id_priv, RDMA_CM_DESTROYING); 2462dd5bdff8SOr Gerlitz destroy = 1; 2463dd5bdff8SOr Gerlitz } 2464dd5bdff8SOr Gerlitz 2465dd5bdff8SOr Gerlitz out: 2466dd5bdff8SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 2467dd5bdff8SOr Gerlitz cma_deref_id(id_priv); 2468dd5bdff8SOr Gerlitz if (destroy) 2469dd5bdff8SOr Gerlitz rdma_destroy_id(&id_priv->id); 2470dd5bdff8SOr Gerlitz kfree(work); 2471dd5bdff8SOr Gerlitz } 2472dd5bdff8SOr Gerlitz 2473981b5a23SParav Pandit static void cma_init_resolve_route_work(struct cma_work *work, 2474981b5a23SParav Pandit struct rdma_id_private *id_priv) 2475981b5a23SParav Pandit { 2476981b5a23SParav Pandit work->id = id_priv; 2477981b5a23SParav Pandit INIT_WORK(&work->work, cma_work_handler); 2478981b5a23SParav Pandit work->old_state = RDMA_CM_ROUTE_QUERY; 2479981b5a23SParav Pandit work->new_state = RDMA_CM_ROUTE_RESOLVED; 2480981b5a23SParav Pandit work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; 2481981b5a23SParav Pandit } 2482981b5a23SParav Pandit 2483981b5a23SParav Pandit static void cma_init_resolve_addr_work(struct cma_work *work, 2484981b5a23SParav Pandit struct rdma_id_private *id_priv) 2485981b5a23SParav Pandit { 2486981b5a23SParav Pandit work->id = id_priv; 2487981b5a23SParav Pandit INIT_WORK(&work->work, cma_work_handler); 2488981b5a23SParav Pandit work->old_state = RDMA_CM_ADDR_QUERY; 2489981b5a23SParav Pandit work->new_state = RDMA_CM_ADDR_RESOLVED; 2490981b5a23SParav Pandit work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; 2491981b5a23SParav Pandit } 2492981b5a23SParav Pandit 2493e51060f0SSean Hefty static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) 2494e51060f0SSean Hefty { 2495e51060f0SSean Hefty struct rdma_route *route = &id_priv->id.route; 2496e51060f0SSean Hefty struct cma_work *work; 2497e51060f0SSean Hefty int ret; 2498e51060f0SSean Hefty 2499e51060f0SSean Hefty work = kzalloc(sizeof *work, GFP_KERNEL); 2500e51060f0SSean Hefty if (!work) 2501e51060f0SSean Hefty return -ENOMEM; 2502e51060f0SSean Hefty 2503981b5a23SParav Pandit cma_init_resolve_route_work(work, id_priv); 2504e51060f0SSean Hefty 2505e51060f0SSean Hefty route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); 2506e51060f0SSean Hefty if (!route->path_rec) { 2507e51060f0SSean Hefty ret = -ENOMEM; 2508e51060f0SSean Hefty goto err1; 2509e51060f0SSean Hefty } 2510e51060f0SSean Hefty 2511e51060f0SSean Hefty ret = cma_query_ib_route(id_priv, timeout_ms, work); 2512e51060f0SSean Hefty if (ret) 2513e51060f0SSean Hefty goto err2; 2514e51060f0SSean Hefty 2515e51060f0SSean Hefty return 0; 2516e51060f0SSean Hefty err2: 2517e51060f0SSean Hefty kfree(route->path_rec); 2518e51060f0SSean Hefty route->path_rec = NULL; 2519e51060f0SSean Hefty err1: 2520e51060f0SSean Hefty kfree(work); 2521e51060f0SSean Hefty return ret; 2522e51060f0SSean Hefty } 2523e51060f0SSean Hefty 25249327c7afSParav Pandit static enum ib_gid_type cma_route_gid_type(enum rdma_network_type network_type, 25259327c7afSParav Pandit unsigned long supported_gids, 25269327c7afSParav Pandit enum ib_gid_type default_gid) 25279327c7afSParav Pandit { 25289327c7afSParav Pandit if ((network_type == RDMA_NETWORK_IPV4 || 25299327c7afSParav Pandit network_type == RDMA_NETWORK_IPV6) && 25309327c7afSParav Pandit test_bit(IB_GID_TYPE_ROCE_UDP_ENCAP, &supported_gids)) 25319327c7afSParav Pandit return IB_GID_TYPE_ROCE_UDP_ENCAP; 25329327c7afSParav Pandit 25339327c7afSParav Pandit return default_gid; 25349327c7afSParav Pandit } 25359327c7afSParav Pandit 25369327c7afSParav Pandit /* 25379327c7afSParav Pandit * cma_iboe_set_path_rec_l2_fields() is helper function which sets 25389327c7afSParav Pandit * path record type based on GID type. 25399327c7afSParav Pandit * It also sets up other L2 fields which includes destination mac address 25409327c7afSParav Pandit * netdev ifindex, of the path record. 25419327c7afSParav Pandit * It returns the netdev of the bound interface for this path record entry. 25429327c7afSParav Pandit */ 25439327c7afSParav Pandit static struct net_device * 25449327c7afSParav Pandit cma_iboe_set_path_rec_l2_fields(struct rdma_id_private *id_priv) 25459327c7afSParav Pandit { 25469327c7afSParav Pandit struct rdma_route *route = &id_priv->id.route; 25479327c7afSParav Pandit enum ib_gid_type gid_type = IB_GID_TYPE_ROCE; 25489327c7afSParav Pandit struct rdma_addr *addr = &route->addr; 25499327c7afSParav Pandit unsigned long supported_gids; 25509327c7afSParav Pandit struct net_device *ndev; 25519327c7afSParav Pandit 25529327c7afSParav Pandit if (!addr->dev_addr.bound_dev_if) 25539327c7afSParav Pandit return NULL; 25549327c7afSParav Pandit 25559327c7afSParav Pandit ndev = dev_get_by_index(addr->dev_addr.net, 25569327c7afSParav Pandit addr->dev_addr.bound_dev_if); 25579327c7afSParav Pandit if (!ndev) 25589327c7afSParav Pandit return NULL; 25599327c7afSParav Pandit 25609327c7afSParav Pandit supported_gids = roce_gid_type_mask_support(id_priv->id.device, 25619327c7afSParav Pandit id_priv->id.port_num); 25629327c7afSParav Pandit gid_type = cma_route_gid_type(addr->dev_addr.network, 25639327c7afSParav Pandit supported_gids, 25649327c7afSParav Pandit id_priv->gid_type); 25659327c7afSParav Pandit /* Use the hint from IP Stack to select GID Type */ 25669327c7afSParav Pandit if (gid_type < ib_network_to_gid_type(addr->dev_addr.network)) 25679327c7afSParav Pandit gid_type = ib_network_to_gid_type(addr->dev_addr.network); 25689327c7afSParav Pandit route->path_rec->rec_type = sa_conv_gid_to_pathrec_type(gid_type); 25699327c7afSParav Pandit 2570114cc9c4SParav Pandit route->path_rec->roce.route_resolved = true; 25719327c7afSParav Pandit sa_path_set_ndev(route->path_rec, addr->dev_addr.net); 25729327c7afSParav Pandit sa_path_set_ifindex(route->path_rec, ndev->ifindex); 25739327c7afSParav Pandit sa_path_set_dmac(route->path_rec, addr->dev_addr.dst_dev_addr); 25749327c7afSParav Pandit return ndev; 25759327c7afSParav Pandit } 25769327c7afSParav Pandit 2577fe75889fSParav Pandit int rdma_set_ib_path(struct rdma_cm_id *id, 2578fe75889fSParav Pandit struct sa_path_rec *path_rec) 2579e51060f0SSean Hefty { 2580e51060f0SSean Hefty struct rdma_id_private *id_priv; 25818d20a1f0SParav Pandit struct net_device *ndev; 2582e51060f0SSean Hefty int ret; 2583e51060f0SSean Hefty 2584e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 2585550e5ca7SNir Muchtar if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, 2586550e5ca7SNir Muchtar RDMA_CM_ROUTE_RESOLVED)) 2587e51060f0SSean Hefty return -EINVAL; 2588e51060f0SSean Hefty 2589fe75889fSParav Pandit id->route.path_rec = kmemdup(path_rec, sizeof(*path_rec), 25909893e742SJulia Lawall GFP_KERNEL); 2591e51060f0SSean Hefty if (!id->route.path_rec) { 2592e51060f0SSean Hefty ret = -ENOMEM; 2593e51060f0SSean Hefty goto err; 2594e51060f0SSean Hefty } 2595e51060f0SSean Hefty 25968d20a1f0SParav Pandit if (rdma_protocol_roce(id->device, id->port_num)) { 25978d20a1f0SParav Pandit ndev = cma_iboe_set_path_rec_l2_fields(id_priv); 25988d20a1f0SParav Pandit if (!ndev) { 25998d20a1f0SParav Pandit ret = -ENODEV; 26008d20a1f0SParav Pandit goto err_free; 26018d20a1f0SParav Pandit } 26028d20a1f0SParav Pandit dev_put(ndev); 26038d20a1f0SParav Pandit } 26048d20a1f0SParav Pandit 2605fe75889fSParav Pandit id->route.num_paths = 1; 2606e51060f0SSean Hefty return 0; 26078d20a1f0SParav Pandit 26088d20a1f0SParav Pandit err_free: 26098d20a1f0SParav Pandit kfree(id->route.path_rec); 26108d20a1f0SParav Pandit id->route.path_rec = NULL; 2611e51060f0SSean Hefty err: 2612550e5ca7SNir Muchtar cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_ADDR_RESOLVED); 2613e51060f0SSean Hefty return ret; 2614e51060f0SSean Hefty } 2615fe75889fSParav Pandit EXPORT_SYMBOL(rdma_set_ib_path); 2616e51060f0SSean Hefty 261707ebafbaSTom Tucker static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) 261807ebafbaSTom Tucker { 261907ebafbaSTom Tucker struct cma_work *work; 262007ebafbaSTom Tucker 262107ebafbaSTom Tucker work = kzalloc(sizeof *work, GFP_KERNEL); 262207ebafbaSTom Tucker if (!work) 262307ebafbaSTom Tucker return -ENOMEM; 262407ebafbaSTom Tucker 2625981b5a23SParav Pandit cma_init_resolve_route_work(work, id_priv); 262607ebafbaSTom Tucker queue_work(cma_wq, &work->work); 262707ebafbaSTom Tucker return 0; 262807ebafbaSTom Tucker } 262907ebafbaSTom Tucker 2630eb072c4bSEyal Perry static int iboe_tos_to_sl(struct net_device *ndev, int tos) 2631eb072c4bSEyal Perry { 2632eb072c4bSEyal Perry int prio; 2633eb072c4bSEyal Perry struct net_device *dev; 2634eb072c4bSEyal Perry 2635eb072c4bSEyal Perry prio = rt_tos2priority(tos); 2636d0d7b10bSParav Pandit dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev; 2637eb072c4bSEyal Perry if (dev->num_tc) 2638eb072c4bSEyal Perry return netdev_get_prio_tc_map(dev, prio); 2639eb072c4bSEyal Perry 2640eb072c4bSEyal Perry #if IS_ENABLED(CONFIG_VLAN_8021Q) 2641d0d7b10bSParav Pandit if (is_vlan_dev(ndev)) 2642eb072c4bSEyal Perry return (vlan_dev_get_egress_qos_mask(ndev, prio) & 2643eb072c4bSEyal Perry VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; 2644eb072c4bSEyal Perry #endif 2645eb072c4bSEyal Perry return 0; 2646eb072c4bSEyal Perry } 2647eb072c4bSEyal Perry 26483c86aa70SEli Cohen static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) 26493c86aa70SEli Cohen { 26503c86aa70SEli Cohen struct rdma_route *route = &id_priv->id.route; 26513c86aa70SEli Cohen struct rdma_addr *addr = &route->addr; 26523c86aa70SEli Cohen struct cma_work *work; 26533c86aa70SEli Cohen int ret; 26544367ec7fSParav Pandit struct net_device *ndev; 26554367ec7fSParav Pandit 265689052d78SMajd Dibbiny u8 default_roce_tos = id_priv->cma_dev->default_roce_tos[id_priv->id.port_num - 265789052d78SMajd Dibbiny rdma_start_port(id_priv->cma_dev->device)]; 265889052d78SMajd Dibbiny u8 tos = id_priv->tos_set ? id_priv->tos : default_roce_tos; 2659dd5f03beSMatan Barak 26603c86aa70SEli Cohen 26613c86aa70SEli Cohen work = kzalloc(sizeof *work, GFP_KERNEL); 26623c86aa70SEli Cohen if (!work) 26633c86aa70SEli Cohen return -ENOMEM; 26643c86aa70SEli Cohen 26653c86aa70SEli Cohen route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL); 26663c86aa70SEli Cohen if (!route->path_rec) { 26673c86aa70SEli Cohen ret = -ENOMEM; 26683c86aa70SEli Cohen goto err1; 26693c86aa70SEli Cohen } 26703c86aa70SEli Cohen 26713c86aa70SEli Cohen route->num_paths = 1; 26723c86aa70SEli Cohen 26739327c7afSParav Pandit ndev = cma_iboe_set_path_rec_l2_fields(id_priv); 267423d70503SWei Yongjun if (!ndev) { 267523d70503SWei Yongjun ret = -ENODEV; 267623d70503SWei Yongjun goto err2; 267723d70503SWei Yongjun } 267820029832SMatan Barak 26797b85627bSMoni Shoua rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, 26807b85627bSMoni Shoua &route->path_rec->sgid); 26817b85627bSMoni Shoua rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.dst_addr, 26827b85627bSMoni Shoua &route->path_rec->dgid); 2683af7bd463SEli Cohen 2684c3efe750SMatan Barak if (((struct sockaddr *)&id_priv->id.route.addr.dst_addr)->sa_family != AF_IB) 2685c865f246SSomnath Kotur /* TODO: get the hoplimit from the inet/inet6 device */ 2686c3efe750SMatan Barak route->path_rec->hop_limit = addr->dev_addr.hoplimit; 2687c3efe750SMatan Barak else 2688af7bd463SEli Cohen route->path_rec->hop_limit = 1; 2689af7bd463SEli Cohen route->path_rec->reversible = 1; 2690af7bd463SEli Cohen route->path_rec->pkey = cpu_to_be16(0xffff); 2691af7bd463SEli Cohen route->path_rec->mtu_selector = IB_SA_EQ; 269289052d78SMajd Dibbiny route->path_rec->sl = iboe_tos_to_sl(ndev, tos); 269389052d78SMajd Dibbiny route->path_rec->traffic_class = tos; 26943c86aa70SEli Cohen route->path_rec->mtu = iboe_get_mtu(ndev->mtu); 26953c86aa70SEli Cohen route->path_rec->rate_selector = IB_SA_EQ; 26963c86aa70SEli Cohen route->path_rec->rate = iboe_get_rate(ndev); 26973c86aa70SEli Cohen dev_put(ndev); 26983c86aa70SEli Cohen route->path_rec->packet_life_time_selector = IB_SA_EQ; 26993c86aa70SEli Cohen route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME; 27003c86aa70SEli Cohen if (!route->path_rec->mtu) { 27013c86aa70SEli Cohen ret = -EINVAL; 27023c86aa70SEli Cohen goto err2; 27033c86aa70SEli Cohen } 27043c86aa70SEli Cohen 2705981b5a23SParav Pandit cma_init_resolve_route_work(work, id_priv); 27063c86aa70SEli Cohen queue_work(cma_wq, &work->work); 27073c86aa70SEli Cohen 27083c86aa70SEli Cohen return 0; 27093c86aa70SEli Cohen 27103c86aa70SEli Cohen err2: 27113c86aa70SEli Cohen kfree(route->path_rec); 27123c86aa70SEli Cohen route->path_rec = NULL; 27133c86aa70SEli Cohen err1: 27143c86aa70SEli Cohen kfree(work); 27153c86aa70SEli Cohen return ret; 27163c86aa70SEli Cohen } 27173c86aa70SEli Cohen 2718e51060f0SSean Hefty int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) 2719e51060f0SSean Hefty { 2720e51060f0SSean Hefty struct rdma_id_private *id_priv; 2721e51060f0SSean Hefty int ret; 2722e51060f0SSean Hefty 2723e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 2724550e5ca7SNir Muchtar if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, RDMA_CM_ROUTE_QUERY)) 2725e51060f0SSean Hefty return -EINVAL; 2726e51060f0SSean Hefty 2727e51060f0SSean Hefty atomic_inc(&id_priv->refcount); 2728fe53ba2fSMichael Wang if (rdma_cap_ib_sa(id->device, id->port_num)) 2729e51060f0SSean Hefty ret = cma_resolve_ib_route(id_priv, timeout_ms); 27305d9fb044SIra Weiny else if (rdma_protocol_roce(id->device, id->port_num)) 27313c86aa70SEli Cohen ret = cma_resolve_iboe_route(id_priv); 2732c72f2189SMichael Wang else if (rdma_protocol_iwarp(id->device, id->port_num)) 273307ebafbaSTom Tucker ret = cma_resolve_iw_route(id_priv, timeout_ms); 2734c72f2189SMichael Wang else 2735e51060f0SSean Hefty ret = -ENOSYS; 2736c72f2189SMichael Wang 2737e51060f0SSean Hefty if (ret) 2738e51060f0SSean Hefty goto err; 2739e51060f0SSean Hefty 2740e51060f0SSean Hefty return 0; 2741e51060f0SSean Hefty err: 2742550e5ca7SNir Muchtar cma_comp_exch(id_priv, RDMA_CM_ROUTE_QUERY, RDMA_CM_ADDR_RESOLVED); 2743e51060f0SSean Hefty cma_deref_id(id_priv); 2744e51060f0SSean Hefty return ret; 2745e51060f0SSean Hefty } 2746e51060f0SSean Hefty EXPORT_SYMBOL(rdma_resolve_route); 2747e51060f0SSean Hefty 27486a3e362dSSean Hefty static void cma_set_loopback(struct sockaddr *addr) 27496a3e362dSSean Hefty { 27506a3e362dSSean Hefty switch (addr->sa_family) { 27516a3e362dSSean Hefty case AF_INET: 27526a3e362dSSean Hefty ((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); 27536a3e362dSSean Hefty break; 27546a3e362dSSean Hefty case AF_INET6: 27556a3e362dSSean Hefty ipv6_addr_set(&((struct sockaddr_in6 *) addr)->sin6_addr, 27566a3e362dSSean Hefty 0, 0, 0, htonl(1)); 27576a3e362dSSean Hefty break; 27586a3e362dSSean Hefty default: 27596a3e362dSSean Hefty ib_addr_set(&((struct sockaddr_ib *) addr)->sib_addr, 27606a3e362dSSean Hefty 0, 0, 0, htonl(1)); 27616a3e362dSSean Hefty break; 27626a3e362dSSean Hefty } 27636a3e362dSSean Hefty } 27646a3e362dSSean Hefty 2765e51060f0SSean Hefty static int cma_bind_loopback(struct rdma_id_private *id_priv) 2766e51060f0SSean Hefty { 2767b0569e40SSean Hefty struct cma_device *cma_dev, *cur_dev; 2768f0ee3404SMichael S. Tsirkin union ib_gid gid; 2769102c5ce0SJack Wang enum ib_port_state port_state; 2770e51060f0SSean Hefty u16 pkey; 2771e51060f0SSean Hefty int ret; 2772e51060f0SSean Hefty u8 p; 2773e51060f0SSean Hefty 2774b0569e40SSean Hefty cma_dev = NULL; 2775e51060f0SSean Hefty mutex_lock(&lock); 2776b0569e40SSean Hefty list_for_each_entry(cur_dev, &dev_list, list) { 2777b0569e40SSean Hefty if (cma_family(id_priv) == AF_IB && 277872219ceaSMichael Wang !rdma_cap_ib_cm(cur_dev->device, 1)) 2779b0569e40SSean Hefty continue; 2780b0569e40SSean Hefty 2781b0569e40SSean Hefty if (!cma_dev) 2782b0569e40SSean Hefty cma_dev = cur_dev; 2783b0569e40SSean Hefty 2784b0569e40SSean Hefty for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { 2785102c5ce0SJack Wang if (!ib_get_cached_port_state(cur_dev->device, p, &port_state) && 2786102c5ce0SJack Wang port_state == IB_PORT_ACTIVE) { 2787b0569e40SSean Hefty cma_dev = cur_dev; 2788b0569e40SSean Hefty goto port_found; 2789b0569e40SSean Hefty } 2790b0569e40SSean Hefty } 2791b0569e40SSean Hefty } 2792b0569e40SSean Hefty 2793b0569e40SSean Hefty if (!cma_dev) { 2794e82153b5SKrishna Kumar ret = -ENODEV; 2795e82153b5SKrishna Kumar goto out; 2796e82153b5SKrishna Kumar } 2797e51060f0SSean Hefty 2798e51060f0SSean Hefty p = 1; 2799e51060f0SSean Hefty 2800e51060f0SSean Hefty port_found: 28011dfce294SParav Pandit ret = rdma_query_gid(cma_dev->device, p, 0, &gid); 2802e51060f0SSean Hefty if (ret) 2803e51060f0SSean Hefty goto out; 2804e51060f0SSean Hefty 2805e51060f0SSean Hefty ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); 2806e51060f0SSean Hefty if (ret) 2807e51060f0SSean Hefty goto out; 2808e51060f0SSean Hefty 28096f8372b6SSean Hefty id_priv->id.route.addr.dev_addr.dev_type = 281021655afcSMichael Wang (rdma_protocol_ib(cma_dev->device, p)) ? 28116f8372b6SSean Hefty ARPHRD_INFINIBAND : ARPHRD_ETHER; 28126f8372b6SSean Hefty 28136f8372b6SSean Hefty rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); 2814e51060f0SSean Hefty ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); 2815e51060f0SSean Hefty id_priv->id.port_num = p; 2816e51060f0SSean Hefty cma_attach_to_dev(id_priv, cma_dev); 2817f4753834SSean Hefty cma_set_loopback(cma_src_addr(id_priv)); 2818e51060f0SSean Hefty out: 2819e51060f0SSean Hefty mutex_unlock(&lock); 2820e51060f0SSean Hefty return ret; 2821e51060f0SSean Hefty } 2822e51060f0SSean Hefty 2823e51060f0SSean Hefty static void addr_handler(int status, struct sockaddr *src_addr, 2824e51060f0SSean Hefty struct rdma_dev_addr *dev_addr, void *context) 2825e51060f0SSean Hefty { 2826e51060f0SSean Hefty struct rdma_id_private *id_priv = context; 2827a1b1b61fSSean Hefty struct rdma_cm_event event; 2828e51060f0SSean Hefty 2829a1b1b61fSSean Hefty memset(&event, 0, sizeof event); 2830de910bd9SOr Gerlitz mutex_lock(&id_priv->handler_mutex); 2831550e5ca7SNir Muchtar if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, 2832550e5ca7SNir Muchtar RDMA_CM_ADDR_RESOLVED)) 283361a73c70SSean Hefty goto out; 283461a73c70SSean Hefty 28357b85627bSMoni Shoua memcpy(cma_src_addr(id_priv), src_addr, rdma_addr_size(src_addr)); 2836498683c6SMoni Shoua if (!status && !id_priv->cma_dev) { 2837be9130ccSDoug Ledford status = cma_acquire_dev(id_priv, NULL); 2838498683c6SMoni Shoua if (status) 2839498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to acquire device. status %d\n", 2840498683c6SMoni Shoua status); 2841498683c6SMoni Shoua } else { 2842498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to resolve IP. status %d\n", status); 2843498683c6SMoni Shoua } 2844e51060f0SSean Hefty 2845e51060f0SSean Hefty if (status) { 2846550e5ca7SNir Muchtar if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, 2847550e5ca7SNir Muchtar RDMA_CM_ADDR_BOUND)) 2848e51060f0SSean Hefty goto out; 2849a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_ADDR_ERROR; 2850a1b1b61fSSean Hefty event.status = status; 28517b85627bSMoni Shoua } else 2852a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_ADDR_RESOLVED; 2853e51060f0SSean Hefty 2854a1b1b61fSSean Hefty if (id_priv->id.event_handler(&id_priv->id, &event)) { 2855550e5ca7SNir Muchtar cma_exch(id_priv, RDMA_CM_DESTROYING); 2856de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 2857e51060f0SSean Hefty cma_deref_id(id_priv); 2858e51060f0SSean Hefty rdma_destroy_id(&id_priv->id); 2859e51060f0SSean Hefty return; 2860e51060f0SSean Hefty } 2861e51060f0SSean Hefty out: 2862de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 2863e51060f0SSean Hefty cma_deref_id(id_priv); 2864e51060f0SSean Hefty } 2865e51060f0SSean Hefty 2866e51060f0SSean Hefty static int cma_resolve_loopback(struct rdma_id_private *id_priv) 2867e51060f0SSean Hefty { 2868e51060f0SSean Hefty struct cma_work *work; 2869f0ee3404SMichael S. Tsirkin union ib_gid gid; 2870e51060f0SSean Hefty int ret; 2871e51060f0SSean Hefty 2872e51060f0SSean Hefty work = kzalloc(sizeof *work, GFP_KERNEL); 2873e51060f0SSean Hefty if (!work) 2874e51060f0SSean Hefty return -ENOMEM; 2875e51060f0SSean Hefty 2876e51060f0SSean Hefty if (!id_priv->cma_dev) { 2877e51060f0SSean Hefty ret = cma_bind_loopback(id_priv); 2878e51060f0SSean Hefty if (ret) 2879e51060f0SSean Hefty goto err; 2880e51060f0SSean Hefty } 2881e51060f0SSean Hefty 28826f8372b6SSean Hefty rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); 28836f8372b6SSean Hefty rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); 2884e51060f0SSean Hefty 2885981b5a23SParav Pandit cma_init_resolve_addr_work(work, id_priv); 2886e51060f0SSean Hefty queue_work(cma_wq, &work->work); 2887e51060f0SSean Hefty return 0; 2888e51060f0SSean Hefty err: 2889e51060f0SSean Hefty kfree(work); 2890e51060f0SSean Hefty return ret; 2891e51060f0SSean Hefty } 2892e51060f0SSean Hefty 2893f17df3b0SSean Hefty static int cma_resolve_ib_addr(struct rdma_id_private *id_priv) 2894f17df3b0SSean Hefty { 2895f17df3b0SSean Hefty struct cma_work *work; 2896f17df3b0SSean Hefty int ret; 2897f17df3b0SSean Hefty 2898f17df3b0SSean Hefty work = kzalloc(sizeof *work, GFP_KERNEL); 2899f17df3b0SSean Hefty if (!work) 2900f17df3b0SSean Hefty return -ENOMEM; 2901f17df3b0SSean Hefty 2902f17df3b0SSean Hefty if (!id_priv->cma_dev) { 2903f17df3b0SSean Hefty ret = cma_resolve_ib_dev(id_priv); 2904f17df3b0SSean Hefty if (ret) 2905f17df3b0SSean Hefty goto err; 2906f17df3b0SSean Hefty } 2907f17df3b0SSean Hefty 2908f17df3b0SSean Hefty rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, (union ib_gid *) 2909f17df3b0SSean Hefty &(((struct sockaddr_ib *) &id_priv->id.route.addr.dst_addr)->sib_addr)); 2910f17df3b0SSean Hefty 2911981b5a23SParav Pandit cma_init_resolve_addr_work(work, id_priv); 2912f17df3b0SSean Hefty queue_work(cma_wq, &work->work); 2913f17df3b0SSean Hefty return 0; 2914f17df3b0SSean Hefty err: 2915f17df3b0SSean Hefty kfree(work); 2916f17df3b0SSean Hefty return ret; 2917f17df3b0SSean Hefty } 2918f17df3b0SSean Hefty 2919e51060f0SSean Hefty static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, 2920e51060f0SSean Hefty struct sockaddr *dst_addr) 2921e51060f0SSean Hefty { 2922d14714dfSSean Hefty if (!src_addr || !src_addr->sa_family) { 2923d14714dfSSean Hefty src_addr = (struct sockaddr *) &id->route.addr.src_addr; 2924f17df3b0SSean Hefty src_addr->sa_family = dst_addr->sa_family; 2925b4cfe397SJack Morgenstein if (IS_ENABLED(CONFIG_IPV6) && 2926b4cfe397SJack Morgenstein dst_addr->sa_family == AF_INET6) { 29276c26a771SSpencer Baugh struct sockaddr_in6 *src_addr6 = (struct sockaddr_in6 *) src_addr; 29286c26a771SSpencer Baugh struct sockaddr_in6 *dst_addr6 = (struct sockaddr_in6 *) dst_addr; 29296c26a771SSpencer Baugh src_addr6->sin6_scope_id = dst_addr6->sin6_scope_id; 29306c26a771SSpencer Baugh if (ipv6_addr_type(&dst_addr6->sin6_addr) & IPV6_ADDR_LINKLOCAL) 29316c26a771SSpencer Baugh id->route.addr.dev_addr.bound_dev_if = dst_addr6->sin6_scope_id; 2932f17df3b0SSean Hefty } else if (dst_addr->sa_family == AF_IB) { 2933f17df3b0SSean Hefty ((struct sockaddr_ib *) src_addr)->sib_pkey = 2934f17df3b0SSean Hefty ((struct sockaddr_ib *) dst_addr)->sib_pkey; 2935d14714dfSSean Hefty } 2936d14714dfSSean Hefty } 2937e51060f0SSean Hefty return rdma_bind_addr(id, src_addr); 2938e51060f0SSean Hefty } 2939e51060f0SSean Hefty 2940e51060f0SSean Hefty int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, 2941e51060f0SSean Hefty struct sockaddr *dst_addr, int timeout_ms) 2942e51060f0SSean Hefty { 2943e51060f0SSean Hefty struct rdma_id_private *id_priv; 2944e51060f0SSean Hefty int ret; 2945e51060f0SSean Hefty 2946e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 294719b752a1SMoni Shoua memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); 2948550e5ca7SNir Muchtar if (id_priv->state == RDMA_CM_IDLE) { 2949e51060f0SSean Hefty ret = cma_bind_addr(id, src_addr, dst_addr); 295019b752a1SMoni Shoua if (ret) { 295119b752a1SMoni Shoua memset(cma_dst_addr(id_priv), 0, rdma_addr_size(dst_addr)); 2952e51060f0SSean Hefty return ret; 2953e51060f0SSean Hefty } 295419b752a1SMoni Shoua } 2955e51060f0SSean Hefty 295619b752a1SMoni Shoua if (cma_family(id_priv) != dst_addr->sa_family) { 295719b752a1SMoni Shoua memset(cma_dst_addr(id_priv), 0, rdma_addr_size(dst_addr)); 29584ae7152eSSean Hefty return -EINVAL; 295919b752a1SMoni Shoua } 29604ae7152eSSean Hefty 296119b752a1SMoni Shoua if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) { 296219b752a1SMoni Shoua memset(cma_dst_addr(id_priv), 0, rdma_addr_size(dst_addr)); 2963e51060f0SSean Hefty return -EINVAL; 296419b752a1SMoni Shoua } 2965e51060f0SSean Hefty 2966e51060f0SSean Hefty atomic_inc(&id_priv->refcount); 2967f17df3b0SSean Hefty if (cma_any_addr(dst_addr)) { 2968e51060f0SSean Hefty ret = cma_resolve_loopback(id_priv); 2969f17df3b0SSean Hefty } else { 2970f17df3b0SSean Hefty if (dst_addr->sa_family == AF_IB) { 2971f17df3b0SSean Hefty ret = cma_resolve_ib_addr(id_priv); 2972f17df3b0SSean Hefty } else { 2973ee6548d1SJason Gunthorpe ret = rdma_resolve_ip(cma_src_addr(id_priv), 29747a118df3SSean Hefty dst_addr, &id->route.addr.dev_addr, 2975e51060f0SSean Hefty timeout_ms, addr_handler, id_priv); 2976f17df3b0SSean Hefty } 2977f17df3b0SSean Hefty } 2978e51060f0SSean Hefty if (ret) 2979e51060f0SSean Hefty goto err; 2980e51060f0SSean Hefty 2981e51060f0SSean Hefty return 0; 2982e51060f0SSean Hefty err: 2983550e5ca7SNir Muchtar cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); 2984e51060f0SSean Hefty cma_deref_id(id_priv); 2985e51060f0SSean Hefty return ret; 2986e51060f0SSean Hefty } 2987e51060f0SSean Hefty EXPORT_SYMBOL(rdma_resolve_addr); 2988e51060f0SSean Hefty 2989a9bb7912SHefty, Sean int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse) 2990a9bb7912SHefty, Sean { 2991a9bb7912SHefty, Sean struct rdma_id_private *id_priv; 2992a9bb7912SHefty, Sean unsigned long flags; 2993a9bb7912SHefty, Sean int ret; 2994a9bb7912SHefty, Sean 2995a9bb7912SHefty, Sean id_priv = container_of(id, struct rdma_id_private, id); 2996a9bb7912SHefty, Sean spin_lock_irqsave(&id_priv->lock, flags); 2997c8dea2f9SSean Hefty if (reuse || id_priv->state == RDMA_CM_IDLE) { 2998a9bb7912SHefty, Sean id_priv->reuseaddr = reuse; 2999a9bb7912SHefty, Sean ret = 0; 3000a9bb7912SHefty, Sean } else { 3001a9bb7912SHefty, Sean ret = -EINVAL; 3002a9bb7912SHefty, Sean } 3003a9bb7912SHefty, Sean spin_unlock_irqrestore(&id_priv->lock, flags); 3004a9bb7912SHefty, Sean return ret; 3005a9bb7912SHefty, Sean } 3006a9bb7912SHefty, Sean EXPORT_SYMBOL(rdma_set_reuseaddr); 3007a9bb7912SHefty, Sean 300868602120SSean Hefty int rdma_set_afonly(struct rdma_cm_id *id, int afonly) 300968602120SSean Hefty { 301068602120SSean Hefty struct rdma_id_private *id_priv; 301168602120SSean Hefty unsigned long flags; 301268602120SSean Hefty int ret; 301368602120SSean Hefty 301468602120SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 301568602120SSean Hefty spin_lock_irqsave(&id_priv->lock, flags); 301668602120SSean Hefty if (id_priv->state == RDMA_CM_IDLE || id_priv->state == RDMA_CM_ADDR_BOUND) { 301768602120SSean Hefty id_priv->options |= (1 << CMA_OPTION_AFONLY); 301868602120SSean Hefty id_priv->afonly = afonly; 301968602120SSean Hefty ret = 0; 302068602120SSean Hefty } else { 302168602120SSean Hefty ret = -EINVAL; 302268602120SSean Hefty } 302368602120SSean Hefty spin_unlock_irqrestore(&id_priv->lock, flags); 302468602120SSean Hefty return ret; 302568602120SSean Hefty } 302668602120SSean Hefty EXPORT_SYMBOL(rdma_set_afonly); 302768602120SSean Hefty 3028e51060f0SSean Hefty static void cma_bind_port(struct rdma_bind_list *bind_list, 3029e51060f0SSean Hefty struct rdma_id_private *id_priv) 3030e51060f0SSean Hefty { 303158afdcb7SSean Hefty struct sockaddr *addr; 303258afdcb7SSean Hefty struct sockaddr_ib *sib; 303358afdcb7SSean Hefty u64 sid, mask; 303458afdcb7SSean Hefty __be16 port; 3035e51060f0SSean Hefty 3036f4753834SSean Hefty addr = cma_src_addr(id_priv); 303758afdcb7SSean Hefty port = htons(bind_list->port); 303858afdcb7SSean Hefty 303958afdcb7SSean Hefty switch (addr->sa_family) { 304058afdcb7SSean Hefty case AF_INET: 304158afdcb7SSean Hefty ((struct sockaddr_in *) addr)->sin_port = port; 304258afdcb7SSean Hefty break; 304358afdcb7SSean Hefty case AF_INET6: 304458afdcb7SSean Hefty ((struct sockaddr_in6 *) addr)->sin6_port = port; 304558afdcb7SSean Hefty break; 304658afdcb7SSean Hefty case AF_IB: 304758afdcb7SSean Hefty sib = (struct sockaddr_ib *) addr; 304858afdcb7SSean Hefty sid = be64_to_cpu(sib->sib_sid); 304958afdcb7SSean Hefty mask = be64_to_cpu(sib->sib_sid_mask); 305058afdcb7SSean Hefty sib->sib_sid = cpu_to_be64((sid & mask) | (u64) ntohs(port)); 305158afdcb7SSean Hefty sib->sib_sid_mask = cpu_to_be64(~0ULL); 305258afdcb7SSean Hefty break; 305358afdcb7SSean Hefty } 3054e51060f0SSean Hefty id_priv->bind_list = bind_list; 3055e51060f0SSean Hefty hlist_add_head(&id_priv->node, &bind_list->owners); 3056e51060f0SSean Hefty } 3057e51060f0SSean Hefty 30582253fc0cSSteve Wise static int cma_alloc_port(enum rdma_ucm_port_space ps, 3059aac978e1SHaggai Eran struct rdma_id_private *id_priv, unsigned short snum) 3060e51060f0SSean Hefty { 3061e51060f0SSean Hefty struct rdma_bind_list *bind_list; 30623b069c5dSTejun Heo int ret; 3063e51060f0SSean Hefty 3064cb164b8cSSean Hefty bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); 3065e51060f0SSean Hefty if (!bind_list) 3066e51060f0SSean Hefty return -ENOMEM; 3067e51060f0SSean Hefty 3068fa20105eSGuy Shapiro ret = cma_ps_alloc(id_priv->id.route.addr.dev_addr.net, ps, bind_list, 3069fa20105eSGuy Shapiro snum); 30703b069c5dSTejun Heo if (ret < 0) 30713b069c5dSTejun Heo goto err; 3072e51060f0SSean Hefty 3073e51060f0SSean Hefty bind_list->ps = ps; 30743b069c5dSTejun Heo bind_list->port = (unsigned short)ret; 3075e51060f0SSean Hefty cma_bind_port(bind_list, id_priv); 3076e51060f0SSean Hefty return 0; 30773b069c5dSTejun Heo err: 3078aedec080SSean Hefty kfree(bind_list); 30793b069c5dSTejun Heo return ret == -ENOSPC ? -EADDRNOTAVAIL : ret; 3080aedec080SSean Hefty } 3081aedec080SSean Hefty 308219b752a1SMoni Shoua static int cma_port_is_unique(struct rdma_bind_list *bind_list, 308319b752a1SMoni Shoua struct rdma_id_private *id_priv) 308419b752a1SMoni Shoua { 308519b752a1SMoni Shoua struct rdma_id_private *cur_id; 308619b752a1SMoni Shoua struct sockaddr *daddr = cma_dst_addr(id_priv); 308719b752a1SMoni Shoua struct sockaddr *saddr = cma_src_addr(id_priv); 308819b752a1SMoni Shoua __be16 dport = cma_port(daddr); 308919b752a1SMoni Shoua 309019b752a1SMoni Shoua hlist_for_each_entry(cur_id, &bind_list->owners, node) { 309119b752a1SMoni Shoua struct sockaddr *cur_daddr = cma_dst_addr(cur_id); 309219b752a1SMoni Shoua struct sockaddr *cur_saddr = cma_src_addr(cur_id); 309319b752a1SMoni Shoua __be16 cur_dport = cma_port(cur_daddr); 309419b752a1SMoni Shoua 309519b752a1SMoni Shoua if (id_priv == cur_id) 309619b752a1SMoni Shoua continue; 309719b752a1SMoni Shoua 309819b752a1SMoni Shoua /* different dest port -> unique */ 30999dea9a2fSTatyana Nikolova if (!cma_any_port(daddr) && 31009dea9a2fSTatyana Nikolova !cma_any_port(cur_daddr) && 310119b752a1SMoni Shoua (dport != cur_dport)) 310219b752a1SMoni Shoua continue; 310319b752a1SMoni Shoua 310419b752a1SMoni Shoua /* different src address -> unique */ 310519b752a1SMoni Shoua if (!cma_any_addr(saddr) && 310619b752a1SMoni Shoua !cma_any_addr(cur_saddr) && 310719b752a1SMoni Shoua cma_addr_cmp(saddr, cur_saddr)) 310819b752a1SMoni Shoua continue; 310919b752a1SMoni Shoua 311019b752a1SMoni Shoua /* different dst address -> unique */ 31119dea9a2fSTatyana Nikolova if (!cma_any_addr(daddr) && 31129dea9a2fSTatyana Nikolova !cma_any_addr(cur_daddr) && 311319b752a1SMoni Shoua cma_addr_cmp(daddr, cur_daddr)) 311419b752a1SMoni Shoua continue; 311519b752a1SMoni Shoua 311619b752a1SMoni Shoua return -EADDRNOTAVAIL; 311719b752a1SMoni Shoua } 311819b752a1SMoni Shoua return 0; 311919b752a1SMoni Shoua } 312019b752a1SMoni Shoua 31212253fc0cSSteve Wise static int cma_alloc_any_port(enum rdma_ucm_port_space ps, 3122aac978e1SHaggai Eran struct rdma_id_private *id_priv) 3123aedec080SSean Hefty { 31245d7220e8STetsuo Handa static unsigned int last_used_port; 31255d7220e8STetsuo Handa int low, high, remaining; 31265d7220e8STetsuo Handa unsigned int rover; 3127fa20105eSGuy Shapiro struct net *net = id_priv->id.route.addr.dev_addr.net; 3128aedec080SSean Hefty 3129fa20105eSGuy Shapiro inet_get_local_port_range(net, &low, &high); 31305d7220e8STetsuo Handa remaining = (high - low) + 1; 313163862b5bSAruna-Hewapathirane rover = prandom_u32() % remaining + low; 31325d7220e8STetsuo Handa retry: 313319b752a1SMoni Shoua if (last_used_port != rover) { 313419b752a1SMoni Shoua struct rdma_bind_list *bind_list; 313519b752a1SMoni Shoua int ret; 313619b752a1SMoni Shoua 313719b752a1SMoni Shoua bind_list = cma_ps_find(net, ps, (unsigned short)rover); 313819b752a1SMoni Shoua 313919b752a1SMoni Shoua if (!bind_list) { 314019b752a1SMoni Shoua ret = cma_alloc_port(ps, id_priv, rover); 314119b752a1SMoni Shoua } else { 314219b752a1SMoni Shoua ret = cma_port_is_unique(bind_list, id_priv); 314319b752a1SMoni Shoua if (!ret) 314419b752a1SMoni Shoua cma_bind_port(bind_list, id_priv); 314519b752a1SMoni Shoua } 31465d7220e8STetsuo Handa /* 31475d7220e8STetsuo Handa * Remember previously used port number in order to avoid 31485d7220e8STetsuo Handa * re-using same port immediately after it is closed. 31495d7220e8STetsuo Handa */ 31505d7220e8STetsuo Handa if (!ret) 31515d7220e8STetsuo Handa last_used_port = rover; 31525d7220e8STetsuo Handa if (ret != -EADDRNOTAVAIL) 31535d7220e8STetsuo Handa return ret; 31545d7220e8STetsuo Handa } 31555d7220e8STetsuo Handa if (--remaining) { 31565d7220e8STetsuo Handa rover++; 31575d7220e8STetsuo Handa if ((rover < low) || (rover > high)) 31585d7220e8STetsuo Handa rover = low; 3159aedec080SSean Hefty goto retry; 3160aedec080SSean Hefty } 31615d7220e8STetsuo Handa return -EADDRNOTAVAIL; 3162e51060f0SSean Hefty } 3163e51060f0SSean Hefty 3164a9bb7912SHefty, Sean /* 3165a9bb7912SHefty, Sean * Check that the requested port is available. This is called when trying to 3166a9bb7912SHefty, Sean * bind to a specific port, or when trying to listen on a bound port. In 3167a9bb7912SHefty, Sean * the latter case, the provided id_priv may already be on the bind_list, but 3168a9bb7912SHefty, Sean * we still need to check that it's okay to start listening. 3169a9bb7912SHefty, Sean */ 3170a9bb7912SHefty, Sean static int cma_check_port(struct rdma_bind_list *bind_list, 3171a9bb7912SHefty, Sean struct rdma_id_private *id_priv, uint8_t reuseaddr) 3172e51060f0SSean Hefty { 3173e51060f0SSean Hefty struct rdma_id_private *cur_id; 317443b752daSHefty, Sean struct sockaddr *addr, *cur_addr; 3175e51060f0SSean Hefty 3176f4753834SSean Hefty addr = cma_src_addr(id_priv); 3177b67bfe0dSSasha Levin hlist_for_each_entry(cur_id, &bind_list->owners, node) { 3178a9bb7912SHefty, Sean if (id_priv == cur_id) 3179a9bb7912SHefty, Sean continue; 3180a9bb7912SHefty, Sean 31815b0ec991SSean Hefty if ((cur_id->state != RDMA_CM_LISTEN) && reuseaddr && 31825b0ec991SSean Hefty cur_id->reuseaddr) 31835b0ec991SSean Hefty continue; 31845b0ec991SSean Hefty 3185f4753834SSean Hefty cur_addr = cma_src_addr(cur_id); 31865b0ec991SSean Hefty if (id_priv->afonly && cur_id->afonly && 31875b0ec991SSean Hefty (addr->sa_family != cur_addr->sa_family)) 31885b0ec991SSean Hefty continue; 31895b0ec991SSean Hefty 31905b0ec991SSean Hefty if (cma_any_addr(addr) || cma_any_addr(cur_addr)) 3191e51060f0SSean Hefty return -EADDRNOTAVAIL; 3192e51060f0SSean Hefty 319343b752daSHefty, Sean if (!cma_addr_cmp(addr, cur_addr)) 3194e51060f0SSean Hefty return -EADDRINUSE; 3195e51060f0SSean Hefty } 3196e51060f0SSean Hefty return 0; 3197e51060f0SSean Hefty } 3198e51060f0SSean Hefty 31992253fc0cSSteve Wise static int cma_use_port(enum rdma_ucm_port_space ps, 3200aac978e1SHaggai Eran struct rdma_id_private *id_priv) 3201a9bb7912SHefty, Sean { 3202a9bb7912SHefty, Sean struct rdma_bind_list *bind_list; 3203a9bb7912SHefty, Sean unsigned short snum; 3204a9bb7912SHefty, Sean int ret; 3205a9bb7912SHefty, Sean 3206f4753834SSean Hefty snum = ntohs(cma_port(cma_src_addr(id_priv))); 3207a9bb7912SHefty, Sean if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) 3208a9bb7912SHefty, Sean return -EACCES; 3209a9bb7912SHefty, Sean 3210fa20105eSGuy Shapiro bind_list = cma_ps_find(id_priv->id.route.addr.dev_addr.net, ps, snum); 3211a9bb7912SHefty, Sean if (!bind_list) { 3212a9bb7912SHefty, Sean ret = cma_alloc_port(ps, id_priv, snum); 3213a9bb7912SHefty, Sean } else { 3214a9bb7912SHefty, Sean ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr); 3215a9bb7912SHefty, Sean if (!ret) 3216a9bb7912SHefty, Sean cma_bind_port(bind_list, id_priv); 3217a9bb7912SHefty, Sean } 3218a9bb7912SHefty, Sean return ret; 3219a9bb7912SHefty, Sean } 3220a9bb7912SHefty, Sean 3221a9bb7912SHefty, Sean static int cma_bind_listen(struct rdma_id_private *id_priv) 3222a9bb7912SHefty, Sean { 3223a9bb7912SHefty, Sean struct rdma_bind_list *bind_list = id_priv->bind_list; 3224a9bb7912SHefty, Sean int ret = 0; 3225a9bb7912SHefty, Sean 3226a9bb7912SHefty, Sean mutex_lock(&lock); 3227a9bb7912SHefty, Sean if (bind_list->owners.first->next) 3228a9bb7912SHefty, Sean ret = cma_check_port(bind_list, id_priv, 0); 3229a9bb7912SHefty, Sean mutex_unlock(&lock); 3230a9bb7912SHefty, Sean return ret; 3231a9bb7912SHefty, Sean } 3232a9bb7912SHefty, Sean 32332253fc0cSSteve Wise static enum rdma_ucm_port_space 32342253fc0cSSteve Wise cma_select_inet_ps(struct rdma_id_private *id_priv) 323558afdcb7SSean Hefty { 323658afdcb7SSean Hefty switch (id_priv->id.ps) { 323758afdcb7SSean Hefty case RDMA_PS_TCP: 323858afdcb7SSean Hefty case RDMA_PS_UDP: 323958afdcb7SSean Hefty case RDMA_PS_IPOIB: 324058afdcb7SSean Hefty case RDMA_PS_IB: 3241aac978e1SHaggai Eran return id_priv->id.ps; 324258afdcb7SSean Hefty default: 3243aac978e1SHaggai Eran 3244aac978e1SHaggai Eran return 0; 324558afdcb7SSean Hefty } 324658afdcb7SSean Hefty } 324758afdcb7SSean Hefty 32482253fc0cSSteve Wise static enum rdma_ucm_port_space 32492253fc0cSSteve Wise cma_select_ib_ps(struct rdma_id_private *id_priv) 325058afdcb7SSean Hefty { 32512253fc0cSSteve Wise enum rdma_ucm_port_space ps = 0; 325258afdcb7SSean Hefty struct sockaddr_ib *sib; 325358afdcb7SSean Hefty u64 sid_ps, mask, sid; 325458afdcb7SSean Hefty 3255f4753834SSean Hefty sib = (struct sockaddr_ib *) cma_src_addr(id_priv); 325658afdcb7SSean Hefty mask = be64_to_cpu(sib->sib_sid_mask) & RDMA_IB_IP_PS_MASK; 325758afdcb7SSean Hefty sid = be64_to_cpu(sib->sib_sid) & mask; 325858afdcb7SSean Hefty 325958afdcb7SSean Hefty if ((id_priv->id.ps == RDMA_PS_IB) && (sid == (RDMA_IB_IP_PS_IB & mask))) { 326058afdcb7SSean Hefty sid_ps = RDMA_IB_IP_PS_IB; 3261aac978e1SHaggai Eran ps = RDMA_PS_IB; 326258afdcb7SSean Hefty } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_TCP)) && 326358afdcb7SSean Hefty (sid == (RDMA_IB_IP_PS_TCP & mask))) { 326458afdcb7SSean Hefty sid_ps = RDMA_IB_IP_PS_TCP; 3265aac978e1SHaggai Eran ps = RDMA_PS_TCP; 326658afdcb7SSean Hefty } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_UDP)) && 326758afdcb7SSean Hefty (sid == (RDMA_IB_IP_PS_UDP & mask))) { 326858afdcb7SSean Hefty sid_ps = RDMA_IB_IP_PS_UDP; 3269aac978e1SHaggai Eran ps = RDMA_PS_UDP; 327058afdcb7SSean Hefty } 327158afdcb7SSean Hefty 327258afdcb7SSean Hefty if (ps) { 327358afdcb7SSean Hefty sib->sib_sid = cpu_to_be64(sid_ps | ntohs(cma_port((struct sockaddr *) sib))); 327458afdcb7SSean Hefty sib->sib_sid_mask = cpu_to_be64(RDMA_IB_IP_PS_MASK | 327558afdcb7SSean Hefty be64_to_cpu(sib->sib_sid_mask)); 327658afdcb7SSean Hefty } 327758afdcb7SSean Hefty return ps; 327858afdcb7SSean Hefty } 327958afdcb7SSean Hefty 3280e51060f0SSean Hefty static int cma_get_port(struct rdma_id_private *id_priv) 3281e51060f0SSean Hefty { 32822253fc0cSSteve Wise enum rdma_ucm_port_space ps; 3283e51060f0SSean Hefty int ret; 3284e51060f0SSean Hefty 3285f4753834SSean Hefty if (cma_family(id_priv) != AF_IB) 328658afdcb7SSean Hefty ps = cma_select_inet_ps(id_priv); 328758afdcb7SSean Hefty else 328858afdcb7SSean Hefty ps = cma_select_ib_ps(id_priv); 328958afdcb7SSean Hefty if (!ps) 3290e51060f0SSean Hefty return -EPROTONOSUPPORT; 3291e51060f0SSean Hefty 3292e51060f0SSean Hefty mutex_lock(&lock); 3293f4753834SSean Hefty if (cma_any_port(cma_src_addr(id_priv))) 3294aedec080SSean Hefty ret = cma_alloc_any_port(ps, id_priv); 3295e51060f0SSean Hefty else 3296e51060f0SSean Hefty ret = cma_use_port(ps, id_priv); 3297e51060f0SSean Hefty mutex_unlock(&lock); 3298e51060f0SSean Hefty 3299e51060f0SSean Hefty return ret; 3300e51060f0SSean Hefty } 3301e51060f0SSean Hefty 3302d14714dfSSean Hefty static int cma_check_linklocal(struct rdma_dev_addr *dev_addr, 3303d14714dfSSean Hefty struct sockaddr *addr) 3304d14714dfSSean Hefty { 3305d90f9b35SRoland Dreier #if IS_ENABLED(CONFIG_IPV6) 3306d14714dfSSean Hefty struct sockaddr_in6 *sin6; 3307d14714dfSSean Hefty 3308d14714dfSSean Hefty if (addr->sa_family != AF_INET6) 3309d14714dfSSean Hefty return 0; 3310d14714dfSSean Hefty 3311d14714dfSSean Hefty sin6 = (struct sockaddr_in6 *) addr; 33125462edddSSomnath Kotur 33135462edddSSomnath Kotur if (!(ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)) 33145462edddSSomnath Kotur return 0; 33155462edddSSomnath Kotur 33165462edddSSomnath Kotur if (!sin6->sin6_scope_id) 3317d14714dfSSean Hefty return -EINVAL; 3318d14714dfSSean Hefty 3319d14714dfSSean Hefty dev_addr->bound_dev_if = sin6->sin6_scope_id; 3320d14714dfSSean Hefty #endif 3321d14714dfSSean Hefty return 0; 3322d14714dfSSean Hefty } 3323d14714dfSSean Hefty 3324a9bb7912SHefty, Sean int rdma_listen(struct rdma_cm_id *id, int backlog) 3325a9bb7912SHefty, Sean { 3326a9bb7912SHefty, Sean struct rdma_id_private *id_priv; 3327a9bb7912SHefty, Sean int ret; 3328a9bb7912SHefty, Sean 3329a9bb7912SHefty, Sean id_priv = container_of(id, struct rdma_id_private, id); 3330550e5ca7SNir Muchtar if (id_priv->state == RDMA_CM_IDLE) { 3331f4753834SSean Hefty id->route.addr.src_addr.ss_family = AF_INET; 3332f4753834SSean Hefty ret = rdma_bind_addr(id, cma_src_addr(id_priv)); 3333a9bb7912SHefty, Sean if (ret) 3334a9bb7912SHefty, Sean return ret; 3335a9bb7912SHefty, Sean } 3336a9bb7912SHefty, Sean 3337550e5ca7SNir Muchtar if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_LISTEN)) 3338a9bb7912SHefty, Sean return -EINVAL; 3339a9bb7912SHefty, Sean 3340a9bb7912SHefty, Sean if (id_priv->reuseaddr) { 3341a9bb7912SHefty, Sean ret = cma_bind_listen(id_priv); 3342a9bb7912SHefty, Sean if (ret) 3343a9bb7912SHefty, Sean goto err; 3344a9bb7912SHefty, Sean } 3345a9bb7912SHefty, Sean 3346a9bb7912SHefty, Sean id_priv->backlog = backlog; 3347a9bb7912SHefty, Sean if (id->device) { 334872219ceaSMichael Wang if (rdma_cap_ib_cm(id->device, 1)) { 3349a9bb7912SHefty, Sean ret = cma_ib_listen(id_priv); 3350a9bb7912SHefty, Sean if (ret) 3351a9bb7912SHefty, Sean goto err; 335204215330SMichael Wang } else if (rdma_cap_iw_cm(id->device, 1)) { 3353a9bb7912SHefty, Sean ret = cma_iw_listen(id_priv, backlog); 3354a9bb7912SHefty, Sean if (ret) 3355a9bb7912SHefty, Sean goto err; 335621655afcSMichael Wang } else { 3357a9bb7912SHefty, Sean ret = -ENOSYS; 3358a9bb7912SHefty, Sean goto err; 3359a9bb7912SHefty, Sean } 3360a9bb7912SHefty, Sean } else 3361a9bb7912SHefty, Sean cma_listen_on_all(id_priv); 3362a9bb7912SHefty, Sean 3363a9bb7912SHefty, Sean return 0; 3364a9bb7912SHefty, Sean err: 3365a9bb7912SHefty, Sean id_priv->backlog = 0; 3366550e5ca7SNir Muchtar cma_comp_exch(id_priv, RDMA_CM_LISTEN, RDMA_CM_ADDR_BOUND); 3367a9bb7912SHefty, Sean return ret; 3368a9bb7912SHefty, Sean } 3369a9bb7912SHefty, Sean EXPORT_SYMBOL(rdma_listen); 3370a9bb7912SHefty, Sean 3371e51060f0SSean Hefty int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) 3372e51060f0SSean Hefty { 3373e51060f0SSean Hefty struct rdma_id_private *id_priv; 3374e51060f0SSean Hefty int ret; 33756df6b4a9SMoni Shoua struct sockaddr *daddr; 3376e51060f0SSean Hefty 3377680f920aSSean Hefty if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 && 3378680f920aSSean Hefty addr->sa_family != AF_IB) 3379e51060f0SSean Hefty return -EAFNOSUPPORT; 3380e51060f0SSean Hefty 3381e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 3382550e5ca7SNir Muchtar if (!cma_comp_exch(id_priv, RDMA_CM_IDLE, RDMA_CM_ADDR_BOUND)) 3383e51060f0SSean Hefty return -EINVAL; 3384e51060f0SSean Hefty 3385d14714dfSSean Hefty ret = cma_check_linklocal(&id->route.addr.dev_addr, addr); 3386d14714dfSSean Hefty if (ret) 3387d14714dfSSean Hefty goto err1; 3388d14714dfSSean Hefty 33897b85627bSMoni Shoua memcpy(cma_src_addr(id_priv), addr, rdma_addr_size(addr)); 33908523c048SSean Hefty if (!cma_any_addr(addr)) { 3391680f920aSSean Hefty ret = cma_translate_addr(addr, &id->route.addr.dev_addr); 3392255d0c14SKrishna Kumar if (ret) 3393255d0c14SKrishna Kumar goto err1; 3394255d0c14SKrishna Kumar 3395be9130ccSDoug Ledford ret = cma_acquire_dev(id_priv, NULL); 3396e51060f0SSean Hefty if (ret) 3397255d0c14SKrishna Kumar goto err1; 3398e51060f0SSean Hefty } 3399e51060f0SSean Hefty 340068602120SSean Hefty if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) { 34015b0ec991SSean Hefty if (addr->sa_family == AF_INET) 34025b0ec991SSean Hefty id_priv->afonly = 1; 34035b0ec991SSean Hefty #if IS_ENABLED(CONFIG_IPV6) 3404fa20105eSGuy Shapiro else if (addr->sa_family == AF_INET6) { 3405fa20105eSGuy Shapiro struct net *net = id_priv->id.route.addr.dev_addr.net; 3406fa20105eSGuy Shapiro 3407fa20105eSGuy Shapiro id_priv->afonly = net->ipv6.sysctl.bindv6only; 3408fa20105eSGuy Shapiro } 34095b0ec991SSean Hefty #endif 341068602120SSean Hefty } 34119dea9a2fSTatyana Nikolova daddr = cma_dst_addr(id_priv); 34129dea9a2fSTatyana Nikolova daddr->sa_family = addr->sa_family; 34139dea9a2fSTatyana Nikolova 3414e51060f0SSean Hefty ret = cma_get_port(id_priv); 3415e51060f0SSean Hefty if (ret) 3416255d0c14SKrishna Kumar goto err2; 3417e51060f0SSean Hefty 3418e51060f0SSean Hefty return 0; 3419255d0c14SKrishna Kumar err2: 342000313983SSteve Wise if (id_priv->cma_dev) { 342100313983SSteve Wise rdma_restrack_del(&id_priv->res); 3422a396d43aSSean Hefty cma_release_dev(id_priv); 342300313983SSteve Wise } 3424255d0c14SKrishna Kumar err1: 3425550e5ca7SNir Muchtar cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_IDLE); 3426e51060f0SSean Hefty return ret; 3427e51060f0SSean Hefty } 3428e51060f0SSean Hefty EXPORT_SYMBOL(rdma_bind_addr); 3429e51060f0SSean Hefty 3430f4753834SSean Hefty static int cma_format_hdr(void *hdr, struct rdma_id_private *id_priv) 3431e51060f0SSean Hefty { 3432e51060f0SSean Hefty struct cma_hdr *cma_hdr; 3433e51060f0SSean Hefty 343401602f11SSean Hefty cma_hdr = hdr; 343501602f11SSean Hefty cma_hdr->cma_version = CMA_VERSION; 3436f4753834SSean Hefty if (cma_family(id_priv) == AF_INET) { 34371f5175adSAleksey Senin struct sockaddr_in *src4, *dst4; 34381f5175adSAleksey Senin 3439f4753834SSean Hefty src4 = (struct sockaddr_in *) cma_src_addr(id_priv); 3440f4753834SSean Hefty dst4 = (struct sockaddr_in *) cma_dst_addr(id_priv); 3441e51060f0SSean Hefty 3442e51060f0SSean Hefty cma_set_ip_ver(cma_hdr, 4); 3443e51060f0SSean Hefty cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; 3444e51060f0SSean Hefty cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; 3445e51060f0SSean Hefty cma_hdr->port = src4->sin_port; 3446e8160e15SSean Hefty } else if (cma_family(id_priv) == AF_INET6) { 34471f5175adSAleksey Senin struct sockaddr_in6 *src6, *dst6; 34481f5175adSAleksey Senin 3449f4753834SSean Hefty src6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); 3450f4753834SSean Hefty dst6 = (struct sockaddr_in6 *) cma_dst_addr(id_priv); 34511f5175adSAleksey Senin 34521f5175adSAleksey Senin cma_set_ip_ver(cma_hdr, 6); 34531f5175adSAleksey Senin cma_hdr->src_addr.ip6 = src6->sin6_addr; 34541f5175adSAleksey Senin cma_hdr->dst_addr.ip6 = dst6->sin6_addr; 34551f5175adSAleksey Senin cma_hdr->port = src6->sin6_port; 34561f5175adSAleksey Senin } 3457e51060f0SSean Hefty return 0; 3458e51060f0SSean Hefty } 3459e51060f0SSean Hefty 3460628e5f6dSSean Hefty static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, 3461628e5f6dSSean Hefty struct ib_cm_event *ib_event) 3462628e5f6dSSean Hefty { 3463628e5f6dSSean Hefty struct rdma_id_private *id_priv = cm_id->context; 3464628e5f6dSSean Hefty struct rdma_cm_event event; 3465628e5f6dSSean Hefty struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; 3466628e5f6dSSean Hefty int ret = 0; 3467628e5f6dSSean Hefty 346837e07cdaSBart Van Assche mutex_lock(&id_priv->handler_mutex); 346937e07cdaSBart Van Assche if (id_priv->state != RDMA_CM_CONNECT) 347037e07cdaSBart Van Assche goto out; 3471628e5f6dSSean Hefty 34728aa08602SSean Hefty memset(&event, 0, sizeof event); 3473628e5f6dSSean Hefty switch (ib_event->event) { 3474628e5f6dSSean Hefty case IB_CM_SIDR_REQ_ERROR: 3475628e5f6dSSean Hefty event.event = RDMA_CM_EVENT_UNREACHABLE; 3476628e5f6dSSean Hefty event.status = -ETIMEDOUT; 3477628e5f6dSSean Hefty break; 3478628e5f6dSSean Hefty case IB_CM_SIDR_REP_RECEIVED: 3479628e5f6dSSean Hefty event.param.ud.private_data = ib_event->private_data; 3480628e5f6dSSean Hefty event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; 3481628e5f6dSSean Hefty if (rep->status != IB_SIDR_SUCCESS) { 3482628e5f6dSSean Hefty event.event = RDMA_CM_EVENT_UNREACHABLE; 3483628e5f6dSSean Hefty event.status = ib_event->param.sidr_rep_rcvd.status; 3484498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: UNREACHABLE: bad SIDR reply. status %d\n", 3485498683c6SMoni Shoua event.status); 3486628e5f6dSSean Hefty break; 3487628e5f6dSSean Hefty } 34885c438135SSean Hefty ret = cma_set_qkey(id_priv, rep->qkey); 3489d2ca39f2SYossi Etigin if (ret) { 3490498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to set qkey. status %d\n", ret); 3491d2ca39f2SYossi Etigin event.event = RDMA_CM_EVENT_ADDR_ERROR; 34925c438135SSean Hefty event.status = ret; 3493628e5f6dSSean Hefty break; 3494628e5f6dSSean Hefty } 34954ad6a024SParav Pandit ib_init_ah_attr_from_path(id_priv->id.device, 34964ad6a024SParav Pandit id_priv->id.port_num, 3497628e5f6dSSean Hefty id_priv->id.route.path_rec, 3498628e5f6dSSean Hefty &event.param.ud.ah_attr); 3499628e5f6dSSean Hefty event.param.ud.qp_num = rep->qpn; 3500628e5f6dSSean Hefty event.param.ud.qkey = rep->qkey; 3501628e5f6dSSean Hefty event.event = RDMA_CM_EVENT_ESTABLISHED; 3502628e5f6dSSean Hefty event.status = 0; 3503628e5f6dSSean Hefty break; 3504628e5f6dSSean Hefty default: 3505aba25a3eSParav Pandit pr_err("RDMA CMA: unexpected IB CM event: %d\n", 3506628e5f6dSSean Hefty ib_event->event); 3507628e5f6dSSean Hefty goto out; 3508628e5f6dSSean Hefty } 3509628e5f6dSSean Hefty 3510628e5f6dSSean Hefty ret = id_priv->id.event_handler(&id_priv->id, &event); 3511628e5f6dSSean Hefty if (ret) { 3512628e5f6dSSean Hefty /* Destroy the CM ID by returning a non-zero value. */ 3513628e5f6dSSean Hefty id_priv->cm_id.ib = NULL; 3514550e5ca7SNir Muchtar cma_exch(id_priv, RDMA_CM_DESTROYING); 3515de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 3516628e5f6dSSean Hefty rdma_destroy_id(&id_priv->id); 3517628e5f6dSSean Hefty return ret; 3518628e5f6dSSean Hefty } 3519628e5f6dSSean Hefty out: 3520de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 3521628e5f6dSSean Hefty return ret; 3522628e5f6dSSean Hefty } 3523628e5f6dSSean Hefty 3524628e5f6dSSean Hefty static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, 3525628e5f6dSSean Hefty struct rdma_conn_param *conn_param) 3526628e5f6dSSean Hefty { 3527628e5f6dSSean Hefty struct ib_cm_sidr_req_param req; 35280c9361fcSJack Morgenstein struct ib_cm_id *id; 3529e511d1aeSSean Hefty void *private_data; 3530c0b64f58SBart Van Assche u8 offset; 3531c0b64f58SBart Van Assche int ret; 3532628e5f6dSSean Hefty 3533e511d1aeSSean Hefty memset(&req, 0, sizeof req); 3534e8160e15SSean Hefty offset = cma_user_data_offset(id_priv); 3535e8160e15SSean Hefty req.private_data_len = offset + conn_param->private_data_len; 353604ded167SSean Hefty if (req.private_data_len < conn_param->private_data_len) 353704ded167SSean Hefty return -EINVAL; 353804ded167SSean Hefty 3539e8160e15SSean Hefty if (req.private_data_len) { 3540e511d1aeSSean Hefty private_data = kzalloc(req.private_data_len, GFP_ATOMIC); 3541e511d1aeSSean Hefty if (!private_data) 3542628e5f6dSSean Hefty return -ENOMEM; 3543e8160e15SSean Hefty } else { 3544e511d1aeSSean Hefty private_data = NULL; 3545e8160e15SSean Hefty } 3546628e5f6dSSean Hefty 3547628e5f6dSSean Hefty if (conn_param->private_data && conn_param->private_data_len) 3548e511d1aeSSean Hefty memcpy(private_data + offset, conn_param->private_data, 3549e511d1aeSSean Hefty conn_param->private_data_len); 3550628e5f6dSSean Hefty 3551e511d1aeSSean Hefty if (private_data) { 3552e511d1aeSSean Hefty ret = cma_format_hdr(private_data, id_priv); 3553628e5f6dSSean Hefty if (ret) 3554628e5f6dSSean Hefty goto out; 3555e511d1aeSSean Hefty req.private_data = private_data; 3556e8160e15SSean Hefty } 3557628e5f6dSSean Hefty 35580c9361fcSJack Morgenstein id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler, 35590c9361fcSJack Morgenstein id_priv); 35600c9361fcSJack Morgenstein if (IS_ERR(id)) { 35610c9361fcSJack Morgenstein ret = PTR_ERR(id); 3562628e5f6dSSean Hefty goto out; 3563628e5f6dSSean Hefty } 35640c9361fcSJack Morgenstein id_priv->cm_id.ib = id; 3565628e5f6dSSean Hefty 3566f4753834SSean Hefty req.path = id_priv->id.route.path_rec; 3567cf53936fSSean Hefty req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); 3568628e5f6dSSean Hefty req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); 3569628e5f6dSSean Hefty req.max_cm_retries = CMA_MAX_CM_RETRIES; 3570628e5f6dSSean Hefty 3571628e5f6dSSean Hefty ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); 3572628e5f6dSSean Hefty if (ret) { 3573628e5f6dSSean Hefty ib_destroy_cm_id(id_priv->cm_id.ib); 3574628e5f6dSSean Hefty id_priv->cm_id.ib = NULL; 3575628e5f6dSSean Hefty } 3576628e5f6dSSean Hefty out: 3577e511d1aeSSean Hefty kfree(private_data); 3578628e5f6dSSean Hefty return ret; 3579628e5f6dSSean Hefty } 3580628e5f6dSSean Hefty 3581e51060f0SSean Hefty static int cma_connect_ib(struct rdma_id_private *id_priv, 3582e51060f0SSean Hefty struct rdma_conn_param *conn_param) 3583e51060f0SSean Hefty { 3584e51060f0SSean Hefty struct ib_cm_req_param req; 3585e51060f0SSean Hefty struct rdma_route *route; 3586e51060f0SSean Hefty void *private_data; 35870c9361fcSJack Morgenstein struct ib_cm_id *id; 3588c0b64f58SBart Van Assche u8 offset; 3589c0b64f58SBart Van Assche int ret; 3590e51060f0SSean Hefty 3591e51060f0SSean Hefty memset(&req, 0, sizeof req); 3592e8160e15SSean Hefty offset = cma_user_data_offset(id_priv); 3593e51060f0SSean Hefty req.private_data_len = offset + conn_param->private_data_len; 359404ded167SSean Hefty if (req.private_data_len < conn_param->private_data_len) 359504ded167SSean Hefty return -EINVAL; 359604ded167SSean Hefty 3597e8160e15SSean Hefty if (req.private_data_len) { 3598e51060f0SSean Hefty private_data = kzalloc(req.private_data_len, GFP_ATOMIC); 3599e51060f0SSean Hefty if (!private_data) 3600e51060f0SSean Hefty return -ENOMEM; 3601e8160e15SSean Hefty } else { 3602e8160e15SSean Hefty private_data = NULL; 3603e8160e15SSean Hefty } 3604e51060f0SSean Hefty 3605e51060f0SSean Hefty if (conn_param->private_data && conn_param->private_data_len) 3606e51060f0SSean Hefty memcpy(private_data + offset, conn_param->private_data, 3607e51060f0SSean Hefty conn_param->private_data_len); 3608e51060f0SSean Hefty 36090c9361fcSJack Morgenstein id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv); 36100c9361fcSJack Morgenstein if (IS_ERR(id)) { 36110c9361fcSJack Morgenstein ret = PTR_ERR(id); 3612e51060f0SSean Hefty goto out; 3613e51060f0SSean Hefty } 36140c9361fcSJack Morgenstein id_priv->cm_id.ib = id; 3615e51060f0SSean Hefty 3616e51060f0SSean Hefty route = &id_priv->id.route; 3617e8160e15SSean Hefty if (private_data) { 3618f4753834SSean Hefty ret = cma_format_hdr(private_data, id_priv); 3619e51060f0SSean Hefty if (ret) 3620e51060f0SSean Hefty goto out; 3621e51060f0SSean Hefty req.private_data = private_data; 3622e8160e15SSean Hefty } 3623e51060f0SSean Hefty 3624e51060f0SSean Hefty req.primary_path = &route->path_rec[0]; 3625e51060f0SSean Hefty if (route->num_paths == 2) 3626e51060f0SSean Hefty req.alternate_path = &route->path_rec[1]; 3627e51060f0SSean Hefty 3628cf53936fSSean Hefty req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); 3629e51060f0SSean Hefty req.qp_num = id_priv->qp_num; 363018c441a6SSean Hefty req.qp_type = id_priv->id.qp_type; 3631e51060f0SSean Hefty req.starting_psn = id_priv->seq_num; 3632e51060f0SSean Hefty req.responder_resources = conn_param->responder_resources; 3633e51060f0SSean Hefty req.initiator_depth = conn_param->initiator_depth; 3634e51060f0SSean Hefty req.flow_control = conn_param->flow_control; 36354ede178aSSean Hefty req.retry_count = min_t(u8, 7, conn_param->retry_count); 36364ede178aSSean Hefty req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); 3637e51060f0SSean Hefty req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; 3638e51060f0SSean Hefty req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; 3639e51060f0SSean Hefty req.max_cm_retries = CMA_MAX_CM_RETRIES; 3640e51060f0SSean Hefty req.srq = id_priv->srq ? 1 : 0; 3641e51060f0SSean Hefty 3642e51060f0SSean Hefty ret = ib_send_cm_req(id_priv->cm_id.ib, &req); 3643e51060f0SSean Hefty out: 36440c9361fcSJack Morgenstein if (ret && !IS_ERR(id)) { 36450c9361fcSJack Morgenstein ib_destroy_cm_id(id); 3646675a027cSKrishna Kumar id_priv->cm_id.ib = NULL; 3647675a027cSKrishna Kumar } 3648675a027cSKrishna Kumar 3649e51060f0SSean Hefty kfree(private_data); 3650e51060f0SSean Hefty return ret; 3651e51060f0SSean Hefty } 3652e51060f0SSean Hefty 365307ebafbaSTom Tucker static int cma_connect_iw(struct rdma_id_private *id_priv, 365407ebafbaSTom Tucker struct rdma_conn_param *conn_param) 365507ebafbaSTom Tucker { 365607ebafbaSTom Tucker struct iw_cm_id *cm_id; 365707ebafbaSTom Tucker int ret; 365807ebafbaSTom Tucker struct iw_cm_conn_param iw_param; 365907ebafbaSTom Tucker 366007ebafbaSTom Tucker cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); 36610c9361fcSJack Morgenstein if (IS_ERR(cm_id)) 36620c9361fcSJack Morgenstein return PTR_ERR(cm_id); 366307ebafbaSTom Tucker 366468cdba06SSteve Wise cm_id->tos = id_priv->tos; 366507ebafbaSTom Tucker id_priv->cm_id.iw = cm_id; 366607ebafbaSTom Tucker 366724d44a39SSteve Wise memcpy(&cm_id->local_addr, cma_src_addr(id_priv), 366824d44a39SSteve Wise rdma_addr_size(cma_src_addr(id_priv))); 366924d44a39SSteve Wise memcpy(&cm_id->remote_addr, cma_dst_addr(id_priv), 367024d44a39SSteve Wise rdma_addr_size(cma_dst_addr(id_priv))); 367107ebafbaSTom Tucker 36725851bb89SSean Hefty ret = cma_modify_qp_rtr(id_priv, conn_param); 3673675a027cSKrishna Kumar if (ret) 3674675a027cSKrishna Kumar goto out; 367507ebafbaSTom Tucker 3676f45ee80eSHefty, Sean if (conn_param) { 367707ebafbaSTom Tucker iw_param.ord = conn_param->initiator_depth; 367807ebafbaSTom Tucker iw_param.ird = conn_param->responder_resources; 367907ebafbaSTom Tucker iw_param.private_data = conn_param->private_data; 368007ebafbaSTom Tucker iw_param.private_data_len = conn_param->private_data_len; 3681f45ee80eSHefty, Sean iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num; 3682f45ee80eSHefty, Sean } else { 3683f45ee80eSHefty, Sean memset(&iw_param, 0, sizeof iw_param); 368407ebafbaSTom Tucker iw_param.qpn = id_priv->qp_num; 3685f45ee80eSHefty, Sean } 368607ebafbaSTom Tucker ret = iw_cm_connect(cm_id, &iw_param); 368707ebafbaSTom Tucker out: 36880c9361fcSJack Morgenstein if (ret) { 3689675a027cSKrishna Kumar iw_destroy_cm_id(cm_id); 3690675a027cSKrishna Kumar id_priv->cm_id.iw = NULL; 3691675a027cSKrishna Kumar } 369207ebafbaSTom Tucker return ret; 369307ebafbaSTom Tucker } 369407ebafbaSTom Tucker 3695e51060f0SSean Hefty int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) 3696e51060f0SSean Hefty { 3697e51060f0SSean Hefty struct rdma_id_private *id_priv; 3698e51060f0SSean Hefty int ret; 3699e51060f0SSean Hefty 3700e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 3701550e5ca7SNir Muchtar if (!cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_CONNECT)) 3702e51060f0SSean Hefty return -EINVAL; 3703e51060f0SSean Hefty 3704e51060f0SSean Hefty if (!id->qp) { 3705e51060f0SSean Hefty id_priv->qp_num = conn_param->qp_num; 3706e51060f0SSean Hefty id_priv->srq = conn_param->srq; 3707e51060f0SSean Hefty } 3708e51060f0SSean Hefty 370972219ceaSMichael Wang if (rdma_cap_ib_cm(id->device, id->port_num)) { 3710b26f9b99SSean Hefty if (id->qp_type == IB_QPT_UD) 3711628e5f6dSSean Hefty ret = cma_resolve_ib_udp(id_priv, conn_param); 3712628e5f6dSSean Hefty else 3713e51060f0SSean Hefty ret = cma_connect_ib(id_priv, conn_param); 371404215330SMichael Wang } else if (rdma_cap_iw_cm(id->device, id->port_num)) 371507ebafbaSTom Tucker ret = cma_connect_iw(id_priv, conn_param); 371621655afcSMichael Wang else 3717e51060f0SSean Hefty ret = -ENOSYS; 3718e51060f0SSean Hefty if (ret) 3719e51060f0SSean Hefty goto err; 3720e51060f0SSean Hefty 3721e51060f0SSean Hefty return 0; 3722e51060f0SSean Hefty err: 3723550e5ca7SNir Muchtar cma_comp_exch(id_priv, RDMA_CM_CONNECT, RDMA_CM_ROUTE_RESOLVED); 3724e51060f0SSean Hefty return ret; 3725e51060f0SSean Hefty } 3726e51060f0SSean Hefty EXPORT_SYMBOL(rdma_connect); 3727e51060f0SSean Hefty 3728e51060f0SSean Hefty static int cma_accept_ib(struct rdma_id_private *id_priv, 3729e51060f0SSean Hefty struct rdma_conn_param *conn_param) 3730e51060f0SSean Hefty { 3731e51060f0SSean Hefty struct ib_cm_rep_param rep; 37325851bb89SSean Hefty int ret; 3733e51060f0SSean Hefty 37345851bb89SSean Hefty ret = cma_modify_qp_rtr(id_priv, conn_param); 3735e51060f0SSean Hefty if (ret) 37360fe313b0SSean Hefty goto out; 37370fe313b0SSean Hefty 37385851bb89SSean Hefty ret = cma_modify_qp_rts(id_priv, conn_param); 37390fe313b0SSean Hefty if (ret) 37400fe313b0SSean Hefty goto out; 37410fe313b0SSean Hefty 3742e51060f0SSean Hefty memset(&rep, 0, sizeof rep); 3743e51060f0SSean Hefty rep.qp_num = id_priv->qp_num; 3744e51060f0SSean Hefty rep.starting_psn = id_priv->seq_num; 3745e51060f0SSean Hefty rep.private_data = conn_param->private_data; 3746e51060f0SSean Hefty rep.private_data_len = conn_param->private_data_len; 3747e51060f0SSean Hefty rep.responder_resources = conn_param->responder_resources; 3748e51060f0SSean Hefty rep.initiator_depth = conn_param->initiator_depth; 3749e51060f0SSean Hefty rep.failover_accepted = 0; 3750e51060f0SSean Hefty rep.flow_control = conn_param->flow_control; 37514ede178aSSean Hefty rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); 3752e51060f0SSean Hefty rep.srq = id_priv->srq ? 1 : 0; 3753e51060f0SSean Hefty 37540fe313b0SSean Hefty ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); 37550fe313b0SSean Hefty out: 37560fe313b0SSean Hefty return ret; 3757e51060f0SSean Hefty } 3758e51060f0SSean Hefty 375907ebafbaSTom Tucker static int cma_accept_iw(struct rdma_id_private *id_priv, 376007ebafbaSTom Tucker struct rdma_conn_param *conn_param) 376107ebafbaSTom Tucker { 376207ebafbaSTom Tucker struct iw_cm_conn_param iw_param; 376307ebafbaSTom Tucker int ret; 376407ebafbaSTom Tucker 3765f2625f7dSSteve Wise if (!conn_param) 3766f2625f7dSSteve Wise return -EINVAL; 3767f2625f7dSSteve Wise 37685851bb89SSean Hefty ret = cma_modify_qp_rtr(id_priv, conn_param); 376907ebafbaSTom Tucker if (ret) 377007ebafbaSTom Tucker return ret; 377107ebafbaSTom Tucker 377207ebafbaSTom Tucker iw_param.ord = conn_param->initiator_depth; 377307ebafbaSTom Tucker iw_param.ird = conn_param->responder_resources; 377407ebafbaSTom Tucker iw_param.private_data = conn_param->private_data; 377507ebafbaSTom Tucker iw_param.private_data_len = conn_param->private_data_len; 377607ebafbaSTom Tucker if (id_priv->id.qp) { 377707ebafbaSTom Tucker iw_param.qpn = id_priv->qp_num; 377807ebafbaSTom Tucker } else 377907ebafbaSTom Tucker iw_param.qpn = conn_param->qp_num; 378007ebafbaSTom Tucker 378107ebafbaSTom Tucker return iw_cm_accept(id_priv->cm_id.iw, &iw_param); 378207ebafbaSTom Tucker } 378307ebafbaSTom Tucker 3784628e5f6dSSean Hefty static int cma_send_sidr_rep(struct rdma_id_private *id_priv, 37855c438135SSean Hefty enum ib_cm_sidr_status status, u32 qkey, 3786628e5f6dSSean Hefty const void *private_data, int private_data_len) 3787628e5f6dSSean Hefty { 3788628e5f6dSSean Hefty struct ib_cm_sidr_rep_param rep; 3789d2ca39f2SYossi Etigin int ret; 3790628e5f6dSSean Hefty 3791628e5f6dSSean Hefty memset(&rep, 0, sizeof rep); 3792628e5f6dSSean Hefty rep.status = status; 3793628e5f6dSSean Hefty if (status == IB_SIDR_SUCCESS) { 37945c438135SSean Hefty ret = cma_set_qkey(id_priv, qkey); 3795d2ca39f2SYossi Etigin if (ret) 3796d2ca39f2SYossi Etigin return ret; 3797628e5f6dSSean Hefty rep.qp_num = id_priv->qp_num; 3798c8f6a362SSean Hefty rep.qkey = id_priv->qkey; 3799628e5f6dSSean Hefty } 3800628e5f6dSSean Hefty rep.private_data = private_data; 3801628e5f6dSSean Hefty rep.private_data_len = private_data_len; 3802628e5f6dSSean Hefty 3803628e5f6dSSean Hefty return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); 3804628e5f6dSSean Hefty } 3805628e5f6dSSean Hefty 380600313983SSteve Wise int __rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param, 380700313983SSteve Wise const char *caller) 3808e51060f0SSean Hefty { 3809e51060f0SSean Hefty struct rdma_id_private *id_priv; 3810e51060f0SSean Hefty int ret; 3811e51060f0SSean Hefty 3812e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 381383e9502dSNir Muchtar 381400313983SSteve Wise if (caller) 381500313983SSteve Wise id_priv->res.kern_name = caller; 381600313983SSteve Wise else 381700313983SSteve Wise rdma_restrack_set_task(&id_priv->res, current); 381883e9502dSNir Muchtar 3819550e5ca7SNir Muchtar if (!cma_comp(id_priv, RDMA_CM_CONNECT)) 3820e51060f0SSean Hefty return -EINVAL; 3821e51060f0SSean Hefty 3822e51060f0SSean Hefty if (!id->qp && conn_param) { 3823e51060f0SSean Hefty id_priv->qp_num = conn_param->qp_num; 3824e51060f0SSean Hefty id_priv->srq = conn_param->srq; 3825e51060f0SSean Hefty } 3826e51060f0SSean Hefty 382772219ceaSMichael Wang if (rdma_cap_ib_cm(id->device, id->port_num)) { 3828f45ee80eSHefty, Sean if (id->qp_type == IB_QPT_UD) { 3829f45ee80eSHefty, Sean if (conn_param) 3830628e5f6dSSean Hefty ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, 38315c438135SSean Hefty conn_param->qkey, 3832628e5f6dSSean Hefty conn_param->private_data, 3833628e5f6dSSean Hefty conn_param->private_data_len); 3834f45ee80eSHefty, Sean else 3835f45ee80eSHefty, Sean ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, 38365c438135SSean Hefty 0, NULL, 0); 3837f45ee80eSHefty, Sean } else { 3838f45ee80eSHefty, Sean if (conn_param) 3839e51060f0SSean Hefty ret = cma_accept_ib(id_priv, conn_param); 3840e51060f0SSean Hefty else 3841e51060f0SSean Hefty ret = cma_rep_recv(id_priv); 3842f45ee80eSHefty, Sean } 384304215330SMichael Wang } else if (rdma_cap_iw_cm(id->device, id->port_num)) 384407ebafbaSTom Tucker ret = cma_accept_iw(id_priv, conn_param); 384521655afcSMichael Wang else 3846e51060f0SSean Hefty ret = -ENOSYS; 3847e51060f0SSean Hefty 3848e51060f0SSean Hefty if (ret) 3849e51060f0SSean Hefty goto reject; 3850e51060f0SSean Hefty 3851e51060f0SSean Hefty return 0; 3852e51060f0SSean Hefty reject: 3853c5483388SSean Hefty cma_modify_qp_err(id_priv); 3854e51060f0SSean Hefty rdma_reject(id, NULL, 0); 3855e51060f0SSean Hefty return ret; 3856e51060f0SSean Hefty } 385700313983SSteve Wise EXPORT_SYMBOL(__rdma_accept); 3858e51060f0SSean Hefty 38590fe313b0SSean Hefty int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) 38600fe313b0SSean Hefty { 38610fe313b0SSean Hefty struct rdma_id_private *id_priv; 38620fe313b0SSean Hefty int ret; 38630fe313b0SSean Hefty 38640fe313b0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 38650c9361fcSJack Morgenstein if (!id_priv->cm_id.ib) 38660fe313b0SSean Hefty return -EINVAL; 38670fe313b0SSean Hefty 38680fe313b0SSean Hefty switch (id->device->node_type) { 38690fe313b0SSean Hefty case RDMA_NODE_IB_CA: 38700fe313b0SSean Hefty ret = ib_cm_notify(id_priv->cm_id.ib, event); 38710fe313b0SSean Hefty break; 38720fe313b0SSean Hefty default: 38730fe313b0SSean Hefty ret = 0; 38740fe313b0SSean Hefty break; 38750fe313b0SSean Hefty } 38760fe313b0SSean Hefty return ret; 38770fe313b0SSean Hefty } 38780fe313b0SSean Hefty EXPORT_SYMBOL(rdma_notify); 38790fe313b0SSean Hefty 3880e51060f0SSean Hefty int rdma_reject(struct rdma_cm_id *id, const void *private_data, 3881e51060f0SSean Hefty u8 private_data_len) 3882e51060f0SSean Hefty { 3883e51060f0SSean Hefty struct rdma_id_private *id_priv; 3884e51060f0SSean Hefty int ret; 3885e51060f0SSean Hefty 3886e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 38870c9361fcSJack Morgenstein if (!id_priv->cm_id.ib) 3888e51060f0SSean Hefty return -EINVAL; 3889e51060f0SSean Hefty 389072219ceaSMichael Wang if (rdma_cap_ib_cm(id->device, id->port_num)) { 3891b26f9b99SSean Hefty if (id->qp_type == IB_QPT_UD) 38925c438135SSean Hefty ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0, 3893e51060f0SSean Hefty private_data, private_data_len); 3894628e5f6dSSean Hefty else 3895628e5f6dSSean Hefty ret = ib_send_cm_rej(id_priv->cm_id.ib, 3896628e5f6dSSean Hefty IB_CM_REJ_CONSUMER_DEFINED, NULL, 3897628e5f6dSSean Hefty 0, private_data, private_data_len); 389804215330SMichael Wang } else if (rdma_cap_iw_cm(id->device, id->port_num)) { 389907ebafbaSTom Tucker ret = iw_cm_reject(id_priv->cm_id.iw, 390007ebafbaSTom Tucker private_data, private_data_len); 390121655afcSMichael Wang } else 3902e51060f0SSean Hefty ret = -ENOSYS; 390321655afcSMichael Wang 3904e51060f0SSean Hefty return ret; 3905e51060f0SSean Hefty } 3906e51060f0SSean Hefty EXPORT_SYMBOL(rdma_reject); 3907e51060f0SSean Hefty 3908e51060f0SSean Hefty int rdma_disconnect(struct rdma_cm_id *id) 3909e51060f0SSean Hefty { 3910e51060f0SSean Hefty struct rdma_id_private *id_priv; 3911e51060f0SSean Hefty int ret; 3912e51060f0SSean Hefty 3913e51060f0SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 39140c9361fcSJack Morgenstein if (!id_priv->cm_id.ib) 3915e51060f0SSean Hefty return -EINVAL; 3916e51060f0SSean Hefty 391772219ceaSMichael Wang if (rdma_cap_ib_cm(id->device, id->port_num)) { 3918c5483388SSean Hefty ret = cma_modify_qp_err(id_priv); 3919e51060f0SSean Hefty if (ret) 3920e51060f0SSean Hefty goto out; 3921e51060f0SSean Hefty /* Initiate or respond to a disconnect. */ 3922e51060f0SSean Hefty if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) 3923e51060f0SSean Hefty ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); 392404215330SMichael Wang } else if (rdma_cap_iw_cm(id->device, id->port_num)) { 392507ebafbaSTom Tucker ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); 392621655afcSMichael Wang } else 392707ebafbaSTom Tucker ret = -EINVAL; 392821655afcSMichael Wang 3929e51060f0SSean Hefty out: 3930e51060f0SSean Hefty return ret; 3931e51060f0SSean Hefty } 3932e51060f0SSean Hefty EXPORT_SYMBOL(rdma_disconnect); 3933e51060f0SSean Hefty 3934c8f6a362SSean Hefty static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) 3935c8f6a362SSean Hefty { 3936c8f6a362SSean Hefty struct rdma_id_private *id_priv; 3937c8f6a362SSean Hefty struct cma_multicast *mc = multicast->context; 3938c8f6a362SSean Hefty struct rdma_cm_event event; 393937e07cdaSBart Van Assche int ret = 0; 3940c8f6a362SSean Hefty 3941c8f6a362SSean Hefty id_priv = mc->id_priv; 394237e07cdaSBart Van Assche mutex_lock(&id_priv->handler_mutex); 394337e07cdaSBart Van Assche if (id_priv->state != RDMA_CM_ADDR_BOUND && 394437e07cdaSBart Van Assche id_priv->state != RDMA_CM_ADDR_RESOLVED) 394537e07cdaSBart Van Assche goto out; 3946c8f6a362SSean Hefty 39475c438135SSean Hefty if (!status) 39485c438135SSean Hefty status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey)); 3949498683c6SMoni Shoua else 3950498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to join multicast. status %d\n", 3951498683c6SMoni Shoua status); 3952c5483388SSean Hefty mutex_lock(&id_priv->qp_mutex); 3953498683c6SMoni Shoua if (!status && id_priv->id.qp) { 3954c8f6a362SSean Hefty status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, 395546ea5061SSean Hefty be16_to_cpu(multicast->rec.mlid)); 3956a3dd3a48SChristophe Jaillet if (status) 3957498683c6SMoni Shoua pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to attach QP. status %d\n", 3958498683c6SMoni Shoua status); 3959498683c6SMoni Shoua } 3960c5483388SSean Hefty mutex_unlock(&id_priv->qp_mutex); 3961c8f6a362SSean Hefty 3962c8f6a362SSean Hefty memset(&event, 0, sizeof event); 3963c8f6a362SSean Hefty event.status = status; 3964c8f6a362SSean Hefty event.param.ud.private_data = mc->context; 3965c8f6a362SSean Hefty if (!status) { 3966bee3c3c9SMoni Shoua struct rdma_dev_addr *dev_addr = 3967bee3c3c9SMoni Shoua &id_priv->id.route.addr.dev_addr; 3968bee3c3c9SMoni Shoua struct net_device *ndev = 3969052eac6eSParav Pandit dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if); 3970bee3c3c9SMoni Shoua enum ib_gid_type gid_type = 3971bee3c3c9SMoni Shoua id_priv->cma_dev->default_gid_type[id_priv->id.port_num - 3972bee3c3c9SMoni Shoua rdma_start_port(id_priv->cma_dev->device)]; 3973bee3c3c9SMoni Shoua 3974c8f6a362SSean Hefty event.event = RDMA_CM_EVENT_MULTICAST_JOIN; 39756d337179SParav Pandit ret = ib_init_ah_from_mcmember(id_priv->id.device, 39766d337179SParav Pandit id_priv->id.port_num, 39776d337179SParav Pandit &multicast->rec, 3978bee3c3c9SMoni Shoua ndev, gid_type, 3979c8f6a362SSean Hefty &event.param.ud.ah_attr); 39806d337179SParav Pandit if (ret) 39816d337179SParav Pandit event.event = RDMA_CM_EVENT_MULTICAST_ERROR; 39826d337179SParav Pandit 3983c8f6a362SSean Hefty event.param.ud.qp_num = 0xFFFFFF; 3984c8f6a362SSean Hefty event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); 3985bee3c3c9SMoni Shoua if (ndev) 3986bee3c3c9SMoni Shoua dev_put(ndev); 3987c8f6a362SSean Hefty } else 3988c8f6a362SSean Hefty event.event = RDMA_CM_EVENT_MULTICAST_ERROR; 3989c8f6a362SSean Hefty 3990c8f6a362SSean Hefty ret = id_priv->id.event_handler(&id_priv->id, &event); 3991c8f6a362SSean Hefty if (ret) { 3992550e5ca7SNir Muchtar cma_exch(id_priv, RDMA_CM_DESTROYING); 3993de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 3994c8f6a362SSean Hefty rdma_destroy_id(&id_priv->id); 3995c8f6a362SSean Hefty return 0; 3996c8f6a362SSean Hefty } 39978aa08602SSean Hefty 399837e07cdaSBart Van Assche out: 3999de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 4000c8f6a362SSean Hefty return 0; 4001c8f6a362SSean Hefty } 4002c8f6a362SSean Hefty 4003c8f6a362SSean Hefty static void cma_set_mgid(struct rdma_id_private *id_priv, 4004c8f6a362SSean Hefty struct sockaddr *addr, union ib_gid *mgid) 4005c8f6a362SSean Hefty { 4006c8f6a362SSean Hefty unsigned char mc_map[MAX_ADDR_LEN]; 4007c8f6a362SSean Hefty struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; 4008c8f6a362SSean Hefty struct sockaddr_in *sin = (struct sockaddr_in *) addr; 4009c8f6a362SSean Hefty struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; 4010c8f6a362SSean Hefty 4011c8f6a362SSean Hefty if (cma_any_addr(addr)) { 4012c8f6a362SSean Hefty memset(mgid, 0, sizeof *mgid); 4013c8f6a362SSean Hefty } else if ((addr->sa_family == AF_INET6) && 40141c9b2819SJason Gunthorpe ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == 4015c8f6a362SSean Hefty 0xFF10A01B)) { 4016c8f6a362SSean Hefty /* IPv6 address is an SA assigned MGID. */ 4017c8f6a362SSean Hefty memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); 40185bc2b7b3SSean Hefty } else if (addr->sa_family == AF_IB) { 40195bc2b7b3SSean Hefty memcpy(mgid, &((struct sockaddr_ib *) addr)->sib_addr, sizeof *mgid); 4020e2e62697SJason Gunthorpe } else if ((addr->sa_family == AF_INET6)) { 4021e2e62697SJason Gunthorpe ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); 4022e2e62697SJason Gunthorpe if (id_priv->id.ps == RDMA_PS_UDP) 4023e2e62697SJason Gunthorpe mc_map[7] = 0x01; /* Use RDMA CM signature */ 4024e2e62697SJason Gunthorpe *mgid = *(union ib_gid *) (mc_map + 4); 4025c8f6a362SSean Hefty } else { 4026a9e527e3SRolf Manderscheid ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); 4027c8f6a362SSean Hefty if (id_priv->id.ps == RDMA_PS_UDP) 4028c8f6a362SSean Hefty mc_map[7] = 0x01; /* Use RDMA CM signature */ 4029c8f6a362SSean Hefty *mgid = *(union ib_gid *) (mc_map + 4); 4030c8f6a362SSean Hefty } 4031c8f6a362SSean Hefty } 4032c8f6a362SSean Hefty 4033c8f6a362SSean Hefty static int cma_join_ib_multicast(struct rdma_id_private *id_priv, 4034c8f6a362SSean Hefty struct cma_multicast *mc) 4035c8f6a362SSean Hefty { 4036c8f6a362SSean Hefty struct ib_sa_mcmember_rec rec; 4037c8f6a362SSean Hefty struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; 4038c8f6a362SSean Hefty ib_sa_comp_mask comp_mask; 4039c8f6a362SSean Hefty int ret; 4040c8f6a362SSean Hefty 4041c8f6a362SSean Hefty ib_addr_get_mgid(dev_addr, &rec.mgid); 4042c8f6a362SSean Hefty ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, 4043c8f6a362SSean Hefty &rec.mgid, &rec); 4044c8f6a362SSean Hefty if (ret) 4045c8f6a362SSean Hefty return ret; 4046c8f6a362SSean Hefty 40475bc2b7b3SSean Hefty ret = cma_set_qkey(id_priv, 0); 40485bc2b7b3SSean Hefty if (ret) 40495bc2b7b3SSean Hefty return ret; 40505bc2b7b3SSean Hefty 40513f446754SRoland Dreier cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); 40525bc2b7b3SSean Hefty rec.qkey = cpu_to_be32(id_priv->qkey); 40536f8372b6SSean Hefty rdma_addr_get_sgid(dev_addr, &rec.port_gid); 4054c8f6a362SSean Hefty rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); 4055ab15c95aSAlex Vesker rec.join_state = mc->join_state; 4056ab15c95aSAlex Vesker 4057ee1c60b1SDasaratharaman Chandramouli if ((rec.join_state == BIT(SENDONLY_FULLMEMBER_JOIN)) && 4058ee1c60b1SDasaratharaman Chandramouli (!ib_sa_sendonly_fullmem_support(&sa_client, 4059ee1c60b1SDasaratharaman Chandramouli id_priv->id.device, 4060ee1c60b1SDasaratharaman Chandramouli id_priv->id.port_num))) { 4061ab15c95aSAlex Vesker pr_warn("RDMA CM: %s port %u Unable to multicast join\n" 4062ab15c95aSAlex Vesker "RDMA CM: SM doesn't support Send Only Full Member option\n", 4063ab15c95aSAlex Vesker id_priv->id.device->name, id_priv->id.port_num); 4064ab15c95aSAlex Vesker return -EOPNOTSUPP; 4065ab15c95aSAlex Vesker } 4066c8f6a362SSean Hefty 4067c8f6a362SSean Hefty comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | 4068c8f6a362SSean Hefty IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | 4069c8f6a362SSean Hefty IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | 4070c8f6a362SSean Hefty IB_SA_MCMEMBER_REC_FLOW_LABEL | 4071c8f6a362SSean Hefty IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; 4072c8f6a362SSean Hefty 407384adeee9SYossi Etigin if (id_priv->id.ps == RDMA_PS_IPOIB) 407484adeee9SYossi Etigin comp_mask |= IB_SA_MCMEMBER_REC_RATE | 40752a22fb8cSDotan Barak IB_SA_MCMEMBER_REC_RATE_SELECTOR | 40762a22fb8cSDotan Barak IB_SA_MCMEMBER_REC_MTU_SELECTOR | 40772a22fb8cSDotan Barak IB_SA_MCMEMBER_REC_MTU | 40782a22fb8cSDotan Barak IB_SA_MCMEMBER_REC_HOP_LIMIT; 407984adeee9SYossi Etigin 4080c8f6a362SSean Hefty mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, 4081c8f6a362SSean Hefty id_priv->id.port_num, &rec, 4082c8f6a362SSean Hefty comp_mask, GFP_KERNEL, 4083c8f6a362SSean Hefty cma_ib_mc_handler, mc); 40848c6ffba0SRusty Russell return PTR_ERR_OR_ZERO(mc->multicast.ib); 4085c8f6a362SSean Hefty } 4086c8f6a362SSean Hefty 40873c86aa70SEli Cohen static void iboe_mcast_work_handler(struct work_struct *work) 40883c86aa70SEli Cohen { 40893c86aa70SEli Cohen struct iboe_mcast_work *mw = container_of(work, struct iboe_mcast_work, work); 40903c86aa70SEli Cohen struct cma_multicast *mc = mw->mc; 40913c86aa70SEli Cohen struct ib_sa_multicast *m = mc->multicast.ib; 40923c86aa70SEli Cohen 40933c86aa70SEli Cohen mc->multicast.ib->context = mc; 40943c86aa70SEli Cohen cma_ib_mc_handler(0, m); 40953c86aa70SEli Cohen kref_put(&mc->mcref, release_mc); 40963c86aa70SEli Cohen kfree(mw); 40973c86aa70SEli Cohen } 40983c86aa70SEli Cohen 4099be1d325aSNoa Osherovich static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid, 4100be1d325aSNoa Osherovich enum ib_gid_type gid_type) 41013c86aa70SEli Cohen { 41023c86aa70SEli Cohen struct sockaddr_in *sin = (struct sockaddr_in *)addr; 41033c86aa70SEli Cohen struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; 41043c86aa70SEli Cohen 41053c86aa70SEli Cohen if (cma_any_addr(addr)) { 41063c86aa70SEli Cohen memset(mgid, 0, sizeof *mgid); 41073c86aa70SEli Cohen } else if (addr->sa_family == AF_INET6) { 41083c86aa70SEli Cohen memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); 41093c86aa70SEli Cohen } else { 41105c181bdaSParav Pandit mgid->raw[0] = 41115c181bdaSParav Pandit (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ? 0 : 0xff; 41125c181bdaSParav Pandit mgid->raw[1] = 41135c181bdaSParav Pandit (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ? 0 : 0x0e; 41143c86aa70SEli Cohen mgid->raw[2] = 0; 41153c86aa70SEli Cohen mgid->raw[3] = 0; 41163c86aa70SEli Cohen mgid->raw[4] = 0; 41173c86aa70SEli Cohen mgid->raw[5] = 0; 41183c86aa70SEli Cohen mgid->raw[6] = 0; 41193c86aa70SEli Cohen mgid->raw[7] = 0; 41203c86aa70SEli Cohen mgid->raw[8] = 0; 41213c86aa70SEli Cohen mgid->raw[9] = 0; 41223c86aa70SEli Cohen mgid->raw[10] = 0xff; 41233c86aa70SEli Cohen mgid->raw[11] = 0xff; 41243c86aa70SEli Cohen *(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr; 41253c86aa70SEli Cohen } 41263c86aa70SEli Cohen } 41273c86aa70SEli Cohen 41283c86aa70SEli Cohen static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, 41293c86aa70SEli Cohen struct cma_multicast *mc) 41303c86aa70SEli Cohen { 41313c86aa70SEli Cohen struct iboe_mcast_work *work; 41323c86aa70SEli Cohen struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; 4133bee3c3c9SMoni Shoua int err = 0; 41343c86aa70SEli Cohen struct sockaddr *addr = (struct sockaddr *)&mc->addr; 41353c86aa70SEli Cohen struct net_device *ndev = NULL; 4136bee3c3c9SMoni Shoua enum ib_gid_type gid_type; 4137ab15c95aSAlex Vesker bool send_only; 4138ab15c95aSAlex Vesker 4139ab15c95aSAlex Vesker send_only = mc->join_state == BIT(SENDONLY_FULLMEMBER_JOIN); 41403c86aa70SEli Cohen 41413c86aa70SEli Cohen if (cma_zero_addr((struct sockaddr *)&mc->addr)) 41423c86aa70SEli Cohen return -EINVAL; 41433c86aa70SEli Cohen 41443c86aa70SEli Cohen work = kzalloc(sizeof *work, GFP_KERNEL); 41453c86aa70SEli Cohen if (!work) 41463c86aa70SEli Cohen return -ENOMEM; 41473c86aa70SEli Cohen 41483c86aa70SEli Cohen mc->multicast.ib = kzalloc(sizeof(struct ib_sa_multicast), GFP_KERNEL); 41493c86aa70SEli Cohen if (!mc->multicast.ib) { 41503c86aa70SEli Cohen err = -ENOMEM; 41513c86aa70SEli Cohen goto out1; 41523c86aa70SEli Cohen } 41533c86aa70SEli Cohen 4154be1d325aSNoa Osherovich gid_type = id_priv->cma_dev->default_gid_type[id_priv->id.port_num - 4155be1d325aSNoa Osherovich rdma_start_port(id_priv->cma_dev->device)]; 4156be1d325aSNoa Osherovich cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid, gid_type); 41573c86aa70SEli Cohen 41583c86aa70SEli Cohen mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); 41593c86aa70SEli Cohen if (id_priv->id.ps == RDMA_PS_UDP) 41603c86aa70SEli Cohen mc->multicast.ib->rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); 41613c86aa70SEli Cohen 41623c86aa70SEli Cohen if (dev_addr->bound_dev_if) 4163052eac6eSParav Pandit ndev = dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if); 41643c86aa70SEli Cohen if (!ndev) { 41653c86aa70SEli Cohen err = -ENODEV; 41663c86aa70SEli Cohen goto out2; 41673c86aa70SEli Cohen } 41683c86aa70SEli Cohen mc->multicast.ib->rec.rate = iboe_get_rate(ndev); 41693c86aa70SEli Cohen mc->multicast.ib->rec.hop_limit = 1; 41703c86aa70SEli Cohen mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); 4171bee3c3c9SMoni Shoua 4172bee3c3c9SMoni Shoua if (addr->sa_family == AF_INET) { 4173c65f6c5aSAlex Vesker if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { 4174c65f6c5aSAlex Vesker mc->multicast.ib->rec.hop_limit = IPV6_DEFAULT_HOPLIMIT; 4175ab15c95aSAlex Vesker if (!send_only) { 4176bee3c3c9SMoni Shoua err = cma_igmp_send(ndev, &mc->multicast.ib->rec.mgid, 4177bee3c3c9SMoni Shoua true); 4178c65f6c5aSAlex Vesker if (!err) 4179bee3c3c9SMoni Shoua mc->igmp_joined = true; 4180bee3c3c9SMoni Shoua } 4181bee3c3c9SMoni Shoua } 4182bee3c3c9SMoni Shoua } else { 4183bee3c3c9SMoni Shoua if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) 4184bee3c3c9SMoni Shoua err = -ENOTSUPP; 4185bee3c3c9SMoni Shoua } 41863c86aa70SEli Cohen dev_put(ndev); 4187bee3c3c9SMoni Shoua if (err || !mc->multicast.ib->rec.mtu) { 4188bee3c3c9SMoni Shoua if (!err) 41893c86aa70SEli Cohen err = -EINVAL; 41903c86aa70SEli Cohen goto out2; 41913c86aa70SEli Cohen } 41927b85627bSMoni Shoua rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, 41937b85627bSMoni Shoua &mc->multicast.ib->rec.port_gid); 41943c86aa70SEli Cohen work->id = id_priv; 41953c86aa70SEli Cohen work->mc = mc; 41963c86aa70SEli Cohen INIT_WORK(&work->work, iboe_mcast_work_handler); 41973c86aa70SEli Cohen kref_get(&mc->mcref); 41983c86aa70SEli Cohen queue_work(cma_wq, &work->work); 41993c86aa70SEli Cohen 42003c86aa70SEli Cohen return 0; 42013c86aa70SEli Cohen 42023c86aa70SEli Cohen out2: 42033c86aa70SEli Cohen kfree(mc->multicast.ib); 42043c86aa70SEli Cohen out1: 42053c86aa70SEli Cohen kfree(work); 42063c86aa70SEli Cohen return err; 42073c86aa70SEli Cohen } 42083c86aa70SEli Cohen 4209c8f6a362SSean Hefty int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, 4210ab15c95aSAlex Vesker u8 join_state, void *context) 4211c8f6a362SSean Hefty { 4212c8f6a362SSean Hefty struct rdma_id_private *id_priv; 4213c8f6a362SSean Hefty struct cma_multicast *mc; 4214c8f6a362SSean Hefty int ret; 4215c8f6a362SSean Hefty 42167688f2c3SLeon Romanovsky if (!id->device) 42177688f2c3SLeon Romanovsky return -EINVAL; 42187688f2c3SLeon Romanovsky 4219c8f6a362SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 4220550e5ca7SNir Muchtar if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) && 4221550e5ca7SNir Muchtar !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED)) 4222c8f6a362SSean Hefty return -EINVAL; 4223c8f6a362SSean Hefty 4224c8f6a362SSean Hefty mc = kmalloc(sizeof *mc, GFP_KERNEL); 4225c8f6a362SSean Hefty if (!mc) 4226c8f6a362SSean Hefty return -ENOMEM; 4227c8f6a362SSean Hefty 4228ef560861SSean Hefty memcpy(&mc->addr, addr, rdma_addr_size(addr)); 4229c8f6a362SSean Hefty mc->context = context; 4230c8f6a362SSean Hefty mc->id_priv = id_priv; 4231bee3c3c9SMoni Shoua mc->igmp_joined = false; 4232ab15c95aSAlex Vesker mc->join_state = join_state; 4233c8f6a362SSean Hefty spin_lock(&id_priv->lock); 4234c8f6a362SSean Hefty list_add(&mc->list, &id_priv->mc_list); 4235c8f6a362SSean Hefty spin_unlock(&id_priv->lock); 4236c8f6a362SSean Hefty 42375d9fb044SIra Weiny if (rdma_protocol_roce(id->device, id->port_num)) { 42383c86aa70SEli Cohen kref_init(&mc->mcref); 42393c86aa70SEli Cohen ret = cma_iboe_join_multicast(id_priv, mc); 4240a31ad3b0SMichael Wang } else if (rdma_cap_ib_mcast(id->device, id->port_num)) 42415c9a5282SMichael Wang ret = cma_join_ib_multicast(id_priv, mc); 42425c9a5282SMichael Wang else 4243c8f6a362SSean Hefty ret = -ENOSYS; 4244c8f6a362SSean Hefty 4245c8f6a362SSean Hefty if (ret) { 4246c8f6a362SSean Hefty spin_lock_irq(&id_priv->lock); 4247c8f6a362SSean Hefty list_del(&mc->list); 4248c8f6a362SSean Hefty spin_unlock_irq(&id_priv->lock); 4249c8f6a362SSean Hefty kfree(mc); 4250c8f6a362SSean Hefty } 4251c8f6a362SSean Hefty return ret; 4252c8f6a362SSean Hefty } 4253c8f6a362SSean Hefty EXPORT_SYMBOL(rdma_join_multicast); 4254c8f6a362SSean Hefty 4255c8f6a362SSean Hefty void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) 4256c8f6a362SSean Hefty { 4257c8f6a362SSean Hefty struct rdma_id_private *id_priv; 4258c8f6a362SSean Hefty struct cma_multicast *mc; 4259c8f6a362SSean Hefty 4260c8f6a362SSean Hefty id_priv = container_of(id, struct rdma_id_private, id); 4261c8f6a362SSean Hefty spin_lock_irq(&id_priv->lock); 4262c8f6a362SSean Hefty list_for_each_entry(mc, &id_priv->mc_list, list) { 4263ef560861SSean Hefty if (!memcmp(&mc->addr, addr, rdma_addr_size(addr))) { 4264c8f6a362SSean Hefty list_del(&mc->list); 4265c8f6a362SSean Hefty spin_unlock_irq(&id_priv->lock); 4266c8f6a362SSean Hefty 4267c8f6a362SSean Hefty if (id->qp) 4268c8f6a362SSean Hefty ib_detach_mcast(id->qp, 4269c8f6a362SSean Hefty &mc->multicast.ib->rec.mgid, 427046ea5061SSean Hefty be16_to_cpu(mc->multicast.ib->rec.mlid)); 42715c9a5282SMichael Wang 42725c9a5282SMichael Wang BUG_ON(id_priv->cma_dev->device != id->device); 42735c9a5282SMichael Wang 4274a31ad3b0SMichael Wang if (rdma_cap_ib_mcast(id->device, id->port_num)) { 4275c8f6a362SSean Hefty ib_sa_free_multicast(mc->multicast.ib); 4276c8f6a362SSean Hefty kfree(mc); 4277bee3c3c9SMoni Shoua } else if (rdma_protocol_roce(id->device, id->port_num)) { 4278*88145678SParav Pandit cma_leave_roce_mc_group(id_priv, mc); 4279bee3c3c9SMoni Shoua } 4280c8f6a362SSean Hefty return; 4281c8f6a362SSean Hefty } 4282c8f6a362SSean Hefty } 4283c8f6a362SSean Hefty spin_unlock_irq(&id_priv->lock); 4284c8f6a362SSean Hefty } 4285c8f6a362SSean Hefty EXPORT_SYMBOL(rdma_leave_multicast); 4286c8f6a362SSean Hefty 4287dd5bdff8SOr Gerlitz static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) 4288dd5bdff8SOr Gerlitz { 4289dd5bdff8SOr Gerlitz struct rdma_dev_addr *dev_addr; 4290dd5bdff8SOr Gerlitz struct cma_ndev_work *work; 4291dd5bdff8SOr Gerlitz 4292dd5bdff8SOr Gerlitz dev_addr = &id_priv->id.route.addr.dev_addr; 4293dd5bdff8SOr Gerlitz 42946266ed6eSSean Hefty if ((dev_addr->bound_dev_if == ndev->ifindex) && 4295fa20105eSGuy Shapiro (net_eq(dev_net(ndev), dev_addr->net)) && 4296dd5bdff8SOr Gerlitz memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { 4297aba25a3eSParav Pandit pr_info("RDMA CM addr change for ndev %s used by id %p\n", 4298dd5bdff8SOr Gerlitz ndev->name, &id_priv->id); 4299dd5bdff8SOr Gerlitz work = kzalloc(sizeof *work, GFP_KERNEL); 4300dd5bdff8SOr Gerlitz if (!work) 4301dd5bdff8SOr Gerlitz return -ENOMEM; 4302dd5bdff8SOr Gerlitz 4303dd5bdff8SOr Gerlitz INIT_WORK(&work->work, cma_ndev_work_handler); 4304dd5bdff8SOr Gerlitz work->id = id_priv; 4305dd5bdff8SOr Gerlitz work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; 4306dd5bdff8SOr Gerlitz atomic_inc(&id_priv->refcount); 4307dd5bdff8SOr Gerlitz queue_work(cma_wq, &work->work); 4308dd5bdff8SOr Gerlitz } 4309dd5bdff8SOr Gerlitz 4310dd5bdff8SOr Gerlitz return 0; 4311dd5bdff8SOr Gerlitz } 4312dd5bdff8SOr Gerlitz 4313dd5bdff8SOr Gerlitz static int cma_netdev_callback(struct notifier_block *self, unsigned long event, 4314351638e7SJiri Pirko void *ptr) 4315dd5bdff8SOr Gerlitz { 4316351638e7SJiri Pirko struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 4317dd5bdff8SOr Gerlitz struct cma_device *cma_dev; 4318dd5bdff8SOr Gerlitz struct rdma_id_private *id_priv; 4319dd5bdff8SOr Gerlitz int ret = NOTIFY_DONE; 4320dd5bdff8SOr Gerlitz 4321dd5bdff8SOr Gerlitz if (event != NETDEV_BONDING_FAILOVER) 4322dd5bdff8SOr Gerlitz return NOTIFY_DONE; 4323dd5bdff8SOr Gerlitz 43243cd96fddSParav Pandit if (!netif_is_bond_master(ndev)) 4325dd5bdff8SOr Gerlitz return NOTIFY_DONE; 4326dd5bdff8SOr Gerlitz 4327dd5bdff8SOr Gerlitz mutex_lock(&lock); 4328dd5bdff8SOr Gerlitz list_for_each_entry(cma_dev, &dev_list, list) 4329dd5bdff8SOr Gerlitz list_for_each_entry(id_priv, &cma_dev->id_list, list) { 4330dd5bdff8SOr Gerlitz ret = cma_netdev_change(ndev, id_priv); 4331dd5bdff8SOr Gerlitz if (ret) 4332dd5bdff8SOr Gerlitz goto out; 4333dd5bdff8SOr Gerlitz } 4334dd5bdff8SOr Gerlitz 4335dd5bdff8SOr Gerlitz out: 4336dd5bdff8SOr Gerlitz mutex_unlock(&lock); 4337dd5bdff8SOr Gerlitz return ret; 4338dd5bdff8SOr Gerlitz } 4339dd5bdff8SOr Gerlitz 4340dd5bdff8SOr Gerlitz static struct notifier_block cma_nb = { 4341dd5bdff8SOr Gerlitz .notifier_call = cma_netdev_callback 4342dd5bdff8SOr Gerlitz }; 4343dd5bdff8SOr Gerlitz 4344e51060f0SSean Hefty static void cma_add_one(struct ib_device *device) 4345e51060f0SSean Hefty { 4346e51060f0SSean Hefty struct cma_device *cma_dev; 4347e51060f0SSean Hefty struct rdma_id_private *id_priv; 4348045959dbSMatan Barak unsigned int i; 4349045959dbSMatan Barak unsigned long supported_gids = 0; 4350e51060f0SSean Hefty 4351e51060f0SSean Hefty cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); 4352e51060f0SSean Hefty if (!cma_dev) 4353e51060f0SSean Hefty return; 4354e51060f0SSean Hefty 4355e51060f0SSean Hefty cma_dev->device = device; 4356045959dbSMatan Barak cma_dev->default_gid_type = kcalloc(device->phys_port_cnt, 4357045959dbSMatan Barak sizeof(*cma_dev->default_gid_type), 4358045959dbSMatan Barak GFP_KERNEL); 435989052d78SMajd Dibbiny if (!cma_dev->default_gid_type) 436089052d78SMajd Dibbiny goto free_cma_dev; 436189052d78SMajd Dibbiny 436289052d78SMajd Dibbiny cma_dev->default_roce_tos = kcalloc(device->phys_port_cnt, 436389052d78SMajd Dibbiny sizeof(*cma_dev->default_roce_tos), 436489052d78SMajd Dibbiny GFP_KERNEL); 436589052d78SMajd Dibbiny if (!cma_dev->default_roce_tos) 436689052d78SMajd Dibbiny goto free_gid_type; 436789052d78SMajd Dibbiny 4368045959dbSMatan Barak for (i = rdma_start_port(device); i <= rdma_end_port(device); i++) { 4369045959dbSMatan Barak supported_gids = roce_gid_type_mask_support(device, i); 4370045959dbSMatan Barak WARN_ON(!supported_gids); 43715ab2d89bSLeon Romanovsky if (supported_gids & (1 << CMA_PREFERRED_ROCE_GID_TYPE)) 437263a5f483SMoni Shoua cma_dev->default_gid_type[i - rdma_start_port(device)] = 437363a5f483SMoni Shoua CMA_PREFERRED_ROCE_GID_TYPE; 437463a5f483SMoni Shoua else 4375045959dbSMatan Barak cma_dev->default_gid_type[i - rdma_start_port(device)] = 4376045959dbSMatan Barak find_first_bit(&supported_gids, BITS_PER_LONG); 437789052d78SMajd Dibbiny cma_dev->default_roce_tos[i - rdma_start_port(device)] = 0; 4378045959dbSMatan Barak } 4379e51060f0SSean Hefty 4380e51060f0SSean Hefty init_completion(&cma_dev->comp); 4381e51060f0SSean Hefty atomic_set(&cma_dev->refcount, 1); 4382e51060f0SSean Hefty INIT_LIST_HEAD(&cma_dev->id_list); 4383e51060f0SSean Hefty ib_set_client_data(device, &cma_client, cma_dev); 4384e51060f0SSean Hefty 4385e51060f0SSean Hefty mutex_lock(&lock); 4386e51060f0SSean Hefty list_add_tail(&cma_dev->list, &dev_list); 4387e51060f0SSean Hefty list_for_each_entry(id_priv, &listen_any_list, list) 4388e51060f0SSean Hefty cma_listen_on_dev(id_priv, cma_dev); 4389e51060f0SSean Hefty mutex_unlock(&lock); 439089052d78SMajd Dibbiny 439189052d78SMajd Dibbiny return; 439289052d78SMajd Dibbiny 439389052d78SMajd Dibbiny free_gid_type: 439489052d78SMajd Dibbiny kfree(cma_dev->default_gid_type); 439589052d78SMajd Dibbiny 439689052d78SMajd Dibbiny free_cma_dev: 439789052d78SMajd Dibbiny kfree(cma_dev); 439889052d78SMajd Dibbiny 439989052d78SMajd Dibbiny return; 4400e51060f0SSean Hefty } 4401e51060f0SSean Hefty 4402e51060f0SSean Hefty static int cma_remove_id_dev(struct rdma_id_private *id_priv) 4403e51060f0SSean Hefty { 4404a1b1b61fSSean Hefty struct rdma_cm_event event; 4405550e5ca7SNir Muchtar enum rdma_cm_state state; 4406de910bd9SOr Gerlitz int ret = 0; 4407e51060f0SSean Hefty 4408e51060f0SSean Hefty /* Record that we want to remove the device */ 4409550e5ca7SNir Muchtar state = cma_exch(id_priv, RDMA_CM_DEVICE_REMOVAL); 4410550e5ca7SNir Muchtar if (state == RDMA_CM_DESTROYING) 4411e51060f0SSean Hefty return 0; 4412e51060f0SSean Hefty 4413e51060f0SSean Hefty cma_cancel_operation(id_priv, state); 4414de910bd9SOr Gerlitz mutex_lock(&id_priv->handler_mutex); 4415e51060f0SSean Hefty 4416e51060f0SSean Hefty /* Check for destruction from another callback. */ 4417550e5ca7SNir Muchtar if (!cma_comp(id_priv, RDMA_CM_DEVICE_REMOVAL)) 4418de910bd9SOr Gerlitz goto out; 4419e51060f0SSean Hefty 4420a1b1b61fSSean Hefty memset(&event, 0, sizeof event); 4421a1b1b61fSSean Hefty event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; 4422de910bd9SOr Gerlitz ret = id_priv->id.event_handler(&id_priv->id, &event); 4423de910bd9SOr Gerlitz out: 4424de910bd9SOr Gerlitz mutex_unlock(&id_priv->handler_mutex); 4425de910bd9SOr Gerlitz return ret; 4426e51060f0SSean Hefty } 4427e51060f0SSean Hefty 4428e51060f0SSean Hefty static void cma_process_remove(struct cma_device *cma_dev) 4429e51060f0SSean Hefty { 4430e51060f0SSean Hefty struct rdma_id_private *id_priv; 4431e51060f0SSean Hefty int ret; 4432e51060f0SSean Hefty 4433e51060f0SSean Hefty mutex_lock(&lock); 4434e51060f0SSean Hefty while (!list_empty(&cma_dev->id_list)) { 4435e51060f0SSean Hefty id_priv = list_entry(cma_dev->id_list.next, 4436e51060f0SSean Hefty struct rdma_id_private, list); 4437e51060f0SSean Hefty 4438d02d1f53SSean Hefty list_del(&id_priv->listen_list); 443994de178aSKrishna Kumar list_del_init(&id_priv->list); 4440e51060f0SSean Hefty atomic_inc(&id_priv->refcount); 4441e51060f0SSean Hefty mutex_unlock(&lock); 4442e51060f0SSean Hefty 4443d02d1f53SSean Hefty ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); 4444e51060f0SSean Hefty cma_deref_id(id_priv); 4445e51060f0SSean Hefty if (ret) 4446e51060f0SSean Hefty rdma_destroy_id(&id_priv->id); 4447e51060f0SSean Hefty 4448e51060f0SSean Hefty mutex_lock(&lock); 4449e51060f0SSean Hefty } 4450e51060f0SSean Hefty mutex_unlock(&lock); 4451e51060f0SSean Hefty 4452e51060f0SSean Hefty cma_deref_dev(cma_dev); 4453e51060f0SSean Hefty wait_for_completion(&cma_dev->comp); 4454e51060f0SSean Hefty } 4455e51060f0SSean Hefty 44567c1eb45aSHaggai Eran static void cma_remove_one(struct ib_device *device, void *client_data) 4457e51060f0SSean Hefty { 44587c1eb45aSHaggai Eran struct cma_device *cma_dev = client_data; 4459e51060f0SSean Hefty 4460e51060f0SSean Hefty if (!cma_dev) 4461e51060f0SSean Hefty return; 4462e51060f0SSean Hefty 4463e51060f0SSean Hefty mutex_lock(&lock); 4464e51060f0SSean Hefty list_del(&cma_dev->list); 4465e51060f0SSean Hefty mutex_unlock(&lock); 4466e51060f0SSean Hefty 4467e51060f0SSean Hefty cma_process_remove(cma_dev); 446889052d78SMajd Dibbiny kfree(cma_dev->default_roce_tos); 4469045959dbSMatan Barak kfree(cma_dev->default_gid_type); 4470e51060f0SSean Hefty kfree(cma_dev); 4471e51060f0SSean Hefty } 4472e51060f0SSean Hefty 4473753f618aSNir Muchtar static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb) 4474753f618aSNir Muchtar { 4475753f618aSNir Muchtar struct nlmsghdr *nlh; 4476753f618aSNir Muchtar struct rdma_cm_id_stats *id_stats; 4477753f618aSNir Muchtar struct rdma_id_private *id_priv; 4478753f618aSNir Muchtar struct rdma_cm_id *id = NULL; 4479753f618aSNir Muchtar struct cma_device *cma_dev; 4480753f618aSNir Muchtar int i_dev = 0, i_id = 0; 4481753f618aSNir Muchtar 4482753f618aSNir Muchtar /* 4483753f618aSNir Muchtar * We export all of the IDs as a sequence of messages. Each 4484753f618aSNir Muchtar * ID gets its own netlink message. 4485753f618aSNir Muchtar */ 4486753f618aSNir Muchtar mutex_lock(&lock); 4487753f618aSNir Muchtar 4488753f618aSNir Muchtar list_for_each_entry(cma_dev, &dev_list, list) { 4489753f618aSNir Muchtar if (i_dev < cb->args[0]) { 4490753f618aSNir Muchtar i_dev++; 4491753f618aSNir Muchtar continue; 4492753f618aSNir Muchtar } 4493753f618aSNir Muchtar 4494753f618aSNir Muchtar i_id = 0; 4495753f618aSNir Muchtar list_for_each_entry(id_priv, &cma_dev->id_list, list) { 4496753f618aSNir Muchtar if (i_id < cb->args[1]) { 4497753f618aSNir Muchtar i_id++; 4498753f618aSNir Muchtar continue; 4499753f618aSNir Muchtar } 4500753f618aSNir Muchtar 4501753f618aSNir Muchtar id_stats = ibnl_put_msg(skb, &nlh, cb->nlh->nlmsg_seq, 4502753f618aSNir Muchtar sizeof *id_stats, RDMA_NL_RDMA_CM, 450330dc5e63STatyana Nikolova RDMA_NL_RDMA_CM_ID_STATS, 450430dc5e63STatyana Nikolova NLM_F_MULTI); 4505753f618aSNir Muchtar if (!id_stats) 4506753f618aSNir Muchtar goto out; 4507753f618aSNir Muchtar 4508753f618aSNir Muchtar memset(id_stats, 0, sizeof *id_stats); 4509753f618aSNir Muchtar id = &id_priv->id; 4510753f618aSNir Muchtar id_stats->node_type = id->route.addr.dev_addr.dev_type; 4511753f618aSNir Muchtar id_stats->port_num = id->port_num; 4512753f618aSNir Muchtar id_stats->bound_dev_if = 4513753f618aSNir Muchtar id->route.addr.dev_addr.bound_dev_if; 4514753f618aSNir Muchtar 4515753f618aSNir Muchtar if (ibnl_put_attr(skb, nlh, 4516ce117ffaSSean Hefty rdma_addr_size(cma_src_addr(id_priv)), 4517f4753834SSean Hefty cma_src_addr(id_priv), 4518ce117ffaSSean Hefty RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) 4519753f618aSNir Muchtar goto out; 4520753f618aSNir Muchtar if (ibnl_put_attr(skb, nlh, 45217baaa49aSParav Pandit rdma_addr_size(cma_dst_addr(id_priv)), 4522f4753834SSean Hefty cma_dst_addr(id_priv), 4523ce117ffaSSean Hefty RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) 4524753f618aSNir Muchtar goto out; 4525753f618aSNir Muchtar 452600313983SSteve Wise id_stats->pid = task_pid_vnr(id_priv->res.task); 4527753f618aSNir Muchtar id_stats->port_space = id->ps; 4528753f618aSNir Muchtar id_stats->cm_state = id_priv->state; 4529753f618aSNir Muchtar id_stats->qp_num = id_priv->qp_num; 4530753f618aSNir Muchtar id_stats->qp_type = id->qp_type; 4531753f618aSNir Muchtar 4532753f618aSNir Muchtar i_id++; 4533e48e5e19SLeon Romanovsky nlmsg_end(skb, nlh); 4534753f618aSNir Muchtar } 4535753f618aSNir Muchtar 4536753f618aSNir Muchtar cb->args[1] = 0; 4537753f618aSNir Muchtar i_dev++; 4538753f618aSNir Muchtar } 4539753f618aSNir Muchtar 4540753f618aSNir Muchtar out: 4541753f618aSNir Muchtar mutex_unlock(&lock); 4542753f618aSNir Muchtar cb->args[0] = i_dev; 4543753f618aSNir Muchtar cb->args[1] = i_id; 4544753f618aSNir Muchtar 4545753f618aSNir Muchtar return skb->len; 4546753f618aSNir Muchtar } 4547753f618aSNir Muchtar 4548d0e312feSLeon Romanovsky static const struct rdma_nl_cbs cma_cb_table[RDMA_NL_RDMA_CM_NUM_OPS] = { 454964401b69SLeon Romanovsky [RDMA_NL_RDMA_CM_ID_STATS] = { .dump = cma_get_id_stats}, 4550753f618aSNir Muchtar }; 4551753f618aSNir Muchtar 45524be74b42SHaggai Eran static int cma_init_net(struct net *net) 45534be74b42SHaggai Eran { 45544be74b42SHaggai Eran struct cma_pernet *pernet = cma_pernet(net); 45554be74b42SHaggai Eran 45564be74b42SHaggai Eran idr_init(&pernet->tcp_ps); 45574be74b42SHaggai Eran idr_init(&pernet->udp_ps); 45584be74b42SHaggai Eran idr_init(&pernet->ipoib_ps); 45594be74b42SHaggai Eran idr_init(&pernet->ib_ps); 45604be74b42SHaggai Eran 45614be74b42SHaggai Eran return 0; 45624be74b42SHaggai Eran } 45634be74b42SHaggai Eran 45644be74b42SHaggai Eran static void cma_exit_net(struct net *net) 45654be74b42SHaggai Eran { 45664be74b42SHaggai Eran struct cma_pernet *pernet = cma_pernet(net); 45674be74b42SHaggai Eran 45684be74b42SHaggai Eran idr_destroy(&pernet->tcp_ps); 45694be74b42SHaggai Eran idr_destroy(&pernet->udp_ps); 45704be74b42SHaggai Eran idr_destroy(&pernet->ipoib_ps); 45714be74b42SHaggai Eran idr_destroy(&pernet->ib_ps); 45724be74b42SHaggai Eran } 45734be74b42SHaggai Eran 45744be74b42SHaggai Eran static struct pernet_operations cma_pernet_operations = { 45754be74b42SHaggai Eran .init = cma_init_net, 45764be74b42SHaggai Eran .exit = cma_exit_net, 45774be74b42SHaggai Eran .id = &cma_pernet_id, 45784be74b42SHaggai Eran .size = sizeof(struct cma_pernet), 45794be74b42SHaggai Eran }; 45804be74b42SHaggai Eran 4581716abb1fSPeter Huewe static int __init cma_init(void) 4582e51060f0SSean Hefty { 45835d7220e8STetsuo Handa int ret; 4584227b60f5SStephen Hemminger 4585dee9acbbSBhaktipriya Shridhar cma_wq = alloc_ordered_workqueue("rdma_cm", WQ_MEM_RECLAIM); 4586e51060f0SSean Hefty if (!cma_wq) 4587e51060f0SSean Hefty return -ENOMEM; 4588e51060f0SSean Hefty 45894be74b42SHaggai Eran ret = register_pernet_subsys(&cma_pernet_operations); 45904be74b42SHaggai Eran if (ret) 45914be74b42SHaggai Eran goto err_wq; 45924be74b42SHaggai Eran 4593c1a0b23bSMichael S. Tsirkin ib_sa_register_client(&sa_client); 4594dd5bdff8SOr Gerlitz register_netdevice_notifier(&cma_nb); 4595c1a0b23bSMichael S. Tsirkin 4596e51060f0SSean Hefty ret = ib_register_client(&cma_client); 4597e51060f0SSean Hefty if (ret) 4598e51060f0SSean Hefty goto err; 4599753f618aSNir Muchtar 4600c9901724SLeon Romanovsky rdma_nl_register(RDMA_NL_RDMA_CM, cma_cb_table); 4601045959dbSMatan Barak cma_configfs_init(); 4602753f618aSNir Muchtar 4603e51060f0SSean Hefty return 0; 4604e51060f0SSean Hefty 4605e51060f0SSean Hefty err: 4606dd5bdff8SOr Gerlitz unregister_netdevice_notifier(&cma_nb); 4607c1a0b23bSMichael S. Tsirkin ib_sa_unregister_client(&sa_client); 46084be74b42SHaggai Eran err_wq: 4609e51060f0SSean Hefty destroy_workqueue(cma_wq); 4610e51060f0SSean Hefty return ret; 4611e51060f0SSean Hefty } 4612e51060f0SSean Hefty 4613716abb1fSPeter Huewe static void __exit cma_cleanup(void) 4614e51060f0SSean Hefty { 4615045959dbSMatan Barak cma_configfs_exit(); 4616c9901724SLeon Romanovsky rdma_nl_unregister(RDMA_NL_RDMA_CM); 4617e51060f0SSean Hefty ib_unregister_client(&cma_client); 4618dd5bdff8SOr Gerlitz unregister_netdevice_notifier(&cma_nb); 4619c1a0b23bSMichael S. Tsirkin ib_sa_unregister_client(&sa_client); 46204be74b42SHaggai Eran unregister_pernet_subsys(&cma_pernet_operations); 4621e51060f0SSean Hefty destroy_workqueue(cma_wq); 4622e51060f0SSean Hefty } 4623e51060f0SSean Hefty 4624e3bf14bdSJason Gunthorpe MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_RDMA_CM, 1); 4625e3bf14bdSJason Gunthorpe 4626e51060f0SSean Hefty module_init(cma_init); 4627e51060f0SSean Hefty module_exit(cma_cleanup); 4628