1 /* 2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #ifndef RXE_H 35 #define RXE_H 36 37 #ifdef pr_fmt 38 #undef pr_fmt 39 #endif 40 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 41 42 #include <linux/module.h> 43 #include <linux/skbuff.h> 44 #include <linux/crc32.h> 45 46 #include <rdma/ib_verbs.h> 47 #include <rdma/ib_user_verbs.h> 48 #include <rdma/ib_pack.h> 49 #include <rdma/ib_smi.h> 50 #include <rdma/ib_umem.h> 51 #include <rdma/ib_cache.h> 52 #include <rdma/ib_addr.h> 53 #include <crypto/hash.h> 54 55 #include "rxe_net.h" 56 #include "rxe_opcode.h" 57 #include "rxe_hdr.h" 58 #include "rxe_param.h" 59 #include "rxe_verbs.h" 60 #include "rxe_loc.h" 61 62 /* 63 * Version 1 and Version 2 are identical on 64 bit machines, but on 32 bit 64 * machines Version 2 has a different struct layout. 65 */ 66 #define RXE_UVERBS_ABI_VERSION 2 67 68 #define RXE_ROCE_V2_SPORT (0xc000) 69 70 static inline u32 rxe_crc32(struct rxe_dev *rxe, 71 u32 crc, void *next, size_t len) 72 { 73 u32 retval; 74 int err; 75 76 SHASH_DESC_ON_STACK(shash, rxe->tfm); 77 78 shash->tfm = rxe->tfm; 79 *(u32 *)shash_desc_ctx(shash) = crc; 80 err = crypto_shash_update(shash, next, len); 81 if (unlikely(err)) { 82 pr_warn_ratelimited("failed crc calculation, err: %d\n", err); 83 return crc32_le(crc, next, len); 84 } 85 86 retval = *(u32 *)shash_desc_ctx(shash); 87 barrier_data(shash_desc_ctx(shash)); 88 return retval; 89 } 90 91 void rxe_set_mtu(struct rxe_dev *rxe, unsigned int dev_mtu); 92 93 int rxe_add(struct rxe_dev *rxe, unsigned int mtu, const char *ibdev_name); 94 95 void rxe_rcv(struct sk_buff *skb); 96 97 /* The caller must do a matching ib_device_put(&dev->ib_dev) */ 98 static inline struct rxe_dev *rxe_get_dev_from_net(struct net_device *ndev) 99 { 100 struct ib_device *ibdev = 101 ib_device_get_by_netdev(ndev, RDMA_DRIVER_RXE); 102 103 if (!ibdev) 104 return NULL; 105 return container_of(ibdev, struct rxe_dev, ib_dev); 106 } 107 108 void rxe_port_up(struct rxe_dev *rxe); 109 void rxe_port_down(struct rxe_dev *rxe); 110 void rxe_set_port_state(struct rxe_dev *rxe); 111 112 #endif /* RXE_H */ 113