/* * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include #if defined(CONFIG_X86) #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mlx5_ib.h" #include "cmd.h" #define DRIVER_NAME "mlx5_ib" #define DRIVER_VERSION "2.2-1" #define DRIVER_RELDATE "Feb 2014" MODULE_AUTHOR("Eli Cohen "); MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(DRIVER_VERSION); static char mlx5_version[] = DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v" DRIVER_VERSION " (" DRIVER_RELDATE ")\n"; enum { MLX5_ATOMIC_SIZE_QP_8BYTES = 1 << 3, }; static enum rdma_link_layer mlx5_port_type_cap_to_rdma_ll(int port_type_cap) { switch (port_type_cap) { case MLX5_CAP_PORT_TYPE_IB: return IB_LINK_LAYER_INFINIBAND; case MLX5_CAP_PORT_TYPE_ETH: return IB_LINK_LAYER_ETHERNET; default: return IB_LINK_LAYER_UNSPECIFIED; } } static enum rdma_link_layer mlx5_ib_port_link_layer(struct ib_device *device, u8 port_num) { struct mlx5_ib_dev *dev = to_mdev(device); int port_type_cap = MLX5_CAP_GEN(dev->mdev, port_type); return mlx5_port_type_cap_to_rdma_ll(port_type_cap); } static int mlx5_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *ndev = netdev_notifier_info_to_dev(ptr); struct mlx5_ib_dev *ibdev = container_of(this, struct mlx5_ib_dev, roce.nb); switch (event) { case NETDEV_REGISTER: case NETDEV_UNREGISTER: write_lock(&ibdev->roce.netdev_lock); if (ndev->dev.parent == &ibdev->mdev->pdev->dev) ibdev->roce.netdev = (event == NETDEV_UNREGISTER) ? NULL : ndev; write_unlock(&ibdev->roce.netdev_lock); break; case NETDEV_UP: case NETDEV_DOWN: { struct net_device *lag_ndev = mlx5_lag_get_roce_netdev(ibdev->mdev); struct net_device *upper = NULL; if (lag_ndev) { upper = netdev_master_upper_dev_get(lag_ndev); dev_put(lag_ndev); } if ((upper == ndev || (!upper && ndev == ibdev->roce.netdev)) && ibdev->ib_active) { struct ib_event ibev = { }; ibev.device = &ibdev->ib_dev; ibev.event = (event == NETDEV_UP) ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; ibev.element.port_num = 1; ib_dispatch_event(&ibev); } break; } default: break; } return NOTIFY_DONE; } static struct net_device *mlx5_ib_get_netdev(struct ib_device *device, u8 port_num) { struct mlx5_ib_dev *ibdev = to_mdev(device); struct net_device *ndev; ndev = mlx5_lag_get_roce_netdev(ibdev->mdev); if (ndev) return ndev; /* Ensure ndev does not disappear before we invoke dev_hold() */ read_lock(&ibdev->roce.netdev_lock); ndev = ibdev->roce.netdev; if (ndev) dev_hold(ndev); read_unlock(&ibdev->roce.netdev_lock); return ndev; } static int translate_eth_proto_oper(u32 eth_proto_oper, u8 *active_speed, u8 *active_width) { switch (eth_proto_oper) { case MLX5E_PROT_MASK(MLX5E_1000BASE_CX_SGMII): case MLX5E_PROT_MASK(MLX5E_1000BASE_KX): case MLX5E_PROT_MASK(MLX5E_100BASE_TX): case MLX5E_PROT_MASK(MLX5E_1000BASE_T): *active_width = IB_WIDTH_1X; *active_speed = IB_SPEED_SDR; break; case MLX5E_PROT_MASK(MLX5E_10GBASE_T): case MLX5E_PROT_MASK(MLX5E_10GBASE_CX4): case MLX5E_PROT_MASK(MLX5E_10GBASE_KX4): case MLX5E_PROT_MASK(MLX5E_10GBASE_KR): case MLX5E_PROT_MASK(MLX5E_10GBASE_CR): case MLX5E_PROT_MASK(MLX5E_10GBASE_SR): case MLX5E_PROT_MASK(MLX5E_10GBASE_ER): *active_width = IB_WIDTH_1X; *active_speed = IB_SPEED_QDR; break; case MLX5E_PROT_MASK(MLX5E_25GBASE_CR): case MLX5E_PROT_MASK(MLX5E_25GBASE_KR): case MLX5E_PROT_MASK(MLX5E_25GBASE_SR): *active_width = IB_WIDTH_1X; *active_speed = IB_SPEED_EDR; break; case MLX5E_PROT_MASK(MLX5E_40GBASE_CR4): case MLX5E_PROT_MASK(MLX5E_40GBASE_KR4): case MLX5E_PROT_MASK(MLX5E_40GBASE_SR4): case MLX5E_PROT_MASK(MLX5E_40GBASE_LR4): *active_width = IB_WIDTH_4X; *active_speed = IB_SPEED_QDR; break; case MLX5E_PROT_MASK(MLX5E_50GBASE_CR2): case MLX5E_PROT_MASK(MLX5E_50GBASE_KR2): case MLX5E_PROT_MASK(MLX5E_50GBASE_SR2): *active_width = IB_WIDTH_1X; *active_speed = IB_SPEED_HDR; break; case MLX5E_PROT_MASK(MLX5E_56GBASE_R4): *active_width = IB_WIDTH_4X; *active_speed = IB_SPEED_FDR; break; case MLX5E_PROT_MASK(MLX5E_100GBASE_CR4): case MLX5E_PROT_MASK(MLX5E_100GBASE_SR4): case MLX5E_PROT_MASK(MLX5E_100GBASE_KR4): case MLX5E_PROT_MASK(MLX5E_100GBASE_LR4): *active_width = IB_WIDTH_4X; *active_speed = IB_SPEED_EDR; break; default: return -EINVAL; } return 0; } static void mlx5_query_port_roce(struct ib_device *device, u8 port_num, struct ib_port_attr *props) { struct mlx5_ib_dev *dev = to_mdev(device); struct mlx5_core_dev *mdev = dev->mdev; struct net_device *ndev, *upper; enum ib_mtu ndev_ib_mtu; u16 qkey_viol_cntr; u32 eth_prot_oper; /* Possible bad flows are checked before filling out props so in case * of an error it will still be zeroed out. */ if (mlx5_query_port_eth_proto_oper(mdev, ð_prot_oper, port_num)) return; translate_eth_proto_oper(eth_prot_oper, &props->active_speed, &props->active_width); props->port_cap_flags |= IB_PORT_CM_SUP; props->port_cap_flags |= IB_PORT_IP_BASED_GIDS; props->gid_tbl_len = MLX5_CAP_ROCE(dev->mdev, roce_address_table_size); props->max_mtu = IB_MTU_4096; props->max_msg_sz = 1 << MLX5_CAP_GEN(dev->mdev, log_max_msg); props->pkey_tbl_len = 1; props->state = IB_PORT_DOWN; props->phys_state = 3; mlx5_query_nic_vport_qkey_viol_cntr(dev->mdev, &qkey_viol_cntr); props->qkey_viol_cntr = qkey_viol_cntr; ndev = mlx5_ib_get_netdev(device, port_num); if (!ndev) return; if (mlx5_lag_is_active(dev->mdev)) { rcu_read_lock(); upper = netdev_master_upper_dev_get_rcu(ndev); if (upper) { dev_put(ndev); ndev = upper; dev_hold(ndev); } rcu_read_unlock(); } if (netif_running(ndev) && netif_carrier_ok(ndev)) { props->state = IB_PORT_ACTIVE; props->phys_state = 5; } ndev_ib_mtu = iboe_get_mtu(ndev->mtu); dev_put(ndev); props->active_mtu = min(props->max_mtu, ndev_ib_mtu); } static void ib_gid_to_mlx5_roce_addr(const union ib_gid *gid, const struct ib_gid_attr *attr, void *mlx5_addr) { #define MLX5_SET_RA(p, f, v) MLX5_SET(roce_addr_layout, p, f, v) char *mlx5_addr_l3_addr = MLX5_ADDR_OF(roce_addr_layout, mlx5_addr, source_l3_address); void *mlx5_addr_mac = MLX5_ADDR_OF(roce_addr_layout, mlx5_addr, source_mac_47_32); if (!gid) return; ether_addr_copy(mlx5_addr_mac, attr->ndev->dev_addr); if (is_vlan_dev(attr->ndev)) { MLX5_SET_RA(mlx5_addr, vlan_valid, 1); MLX5_SET_RA(mlx5_addr, vlan_id, vlan_dev_vlan_id(attr->ndev)); } switch (attr->gid_type) { case IB_GID_TYPE_IB: MLX5_SET_RA(mlx5_addr, roce_version, MLX5_ROCE_VERSION_1); break; case IB_GID_TYPE_ROCE_UDP_ENCAP: MLX5_SET_RA(mlx5_addr, roce_version, MLX5_ROCE_VERSION_2); break; default: WARN_ON(true); } if (attr->gid_type != IB_GID_TYPE_IB) { if (ipv6_addr_v4mapped((void *)gid)) MLX5_SET_RA(mlx5_addr, roce_l3_type, MLX5_ROCE_L3_TYPE_IPV4); else MLX5_SET_RA(mlx5_addr, roce_l3_type, MLX5_ROCE_L3_TYPE_IPV6); } if ((attr->gid_type == IB_GID_TYPE_IB) || !ipv6_addr_v4mapped((void *)gid)) memcpy(mlx5_addr_l3_addr, gid, sizeof(*gid)); else memcpy(&mlx5_addr_l3_addr[12], &gid->raw[12], 4); } static int set_roce_addr(struct ib_device *device, u8 port_num, unsigned int index, const union ib_gid *gid, const struct ib_gid_attr *attr) { struct mlx5_ib_dev *dev = to_mdev(device); u32 in[MLX5_ST_SZ_DW(set_roce_address_in)] = {0}; u32 out[MLX5_ST_SZ_DW(set_roce_address_out)] = {0}; void *in_addr = MLX5_ADDR_OF(set_roce_address_in, in, roce_address); enum rdma_link_layer ll = mlx5_ib_port_link_layer(device, port_num); if (ll != IB_LINK_LAYER_ETHERNET) return -EINVAL; ib_gid_to_mlx5_roce_addr(gid, attr, in_addr); MLX5_SET(set_roce_address_in, in, roce_address_index, index); MLX5_SET(set_roce_address_in, in, opcode, MLX5_CMD_OP_SET_ROCE_ADDRESS); return mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out)); } static int mlx5_ib_add_gid(struct ib_device *device, u8 port_num, unsigned int index, const union ib_gid *gid, const struct ib_gid_attr *attr, __always_unused void **context) { return set_roce_addr(device, port_num, index, gid, attr); } static int mlx5_ib_del_gid(struct ib_device *device, u8 port_num, unsigned int index, __always_unused void **context) { return set_roce_addr(device, port_num, index, NULL, NULL); } __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num, int index) { struct ib_gid_attr attr; union ib_gid gid; if (ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr)) return 0; if (!attr.ndev) return 0; dev_put(attr.ndev); if (attr.gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP) return 0; return cpu_to_be16(MLX5_CAP_ROCE(dev->mdev, r_roce_min_src_udp_port)); } int mlx5_get_roce_gid_type(struct mlx5_ib_dev *dev, u8 port_num, int index, enum ib_gid_type *gid_type) { struct ib_gid_attr attr; union ib_gid gid; int ret; ret = ib_get_cached_gid(&dev->ib_dev, port_num, index, &gid, &attr); if (ret) return ret; if (!attr.ndev) return -ENODEV; dev_put(attr.ndev); *gid_type = attr.gid_type; return 0; } static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev) { if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB) return !MLX5_CAP_GEN(dev->mdev, ib_virt); return 0; } enum { MLX5_VPORT_ACCESS_METHOD_MAD, MLX5_VPORT_ACCESS_METHOD_HCA, MLX5_VPORT_ACCESS_METHOD_NIC, }; static int mlx5_get_vport_access_method(struct ib_device *ibdev) { if (mlx5_use_mad_ifc(to_mdev(ibdev))) return MLX5_VPORT_ACCESS_METHOD_MAD; if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) return MLX5_VPORT_ACCESS_METHOD_NIC; return MLX5_VPORT_ACCESS_METHOD_HCA; } static void get_atomic_caps(struct mlx5_ib_dev *dev, struct ib_device_attr *props) { u8 tmp; u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations); u8 atomic_size_qp = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp); u8 atomic_req_8B_endianness_mode = MLX5_CAP_ATOMIC(dev->mdev, atomic_req_8B_endianess_mode); /* Check if HW supports 8 bytes standard atomic operations and capable * of host endianness respond */ tmp = MLX5_ATOMIC_OPS_CMP_SWAP | MLX5_ATOMIC_OPS_FETCH_ADD; if (((atomic_operations & tmp) == tmp) && (atomic_size_qp & MLX5_ATOMIC_SIZE_QP_8BYTES) && (atomic_req_8B_endianness_mode)) { props->atomic_cap = IB_ATOMIC_HCA; } else { props->atomic_cap = IB_ATOMIC_NONE; } } static int mlx5_query_system_image_guid(struct ib_device *ibdev, __be64 *sys_image_guid) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_core_dev *mdev = dev->mdev; u64 tmp; int err; switch (mlx5_get_vport_access_method(ibdev)) { case MLX5_VPORT_ACCESS_METHOD_MAD: return mlx5_query_mad_ifc_system_image_guid(ibdev, sys_image_guid); case MLX5_VPORT_ACCESS_METHOD_HCA: err = mlx5_query_hca_vport_system_image_guid(mdev, &tmp); break; case MLX5_VPORT_ACCESS_METHOD_NIC: err = mlx5_query_nic_vport_system_image_guid(mdev, &tmp); break; default: return -EINVAL; } if (!err) *sys_image_guid = cpu_to_be64(tmp); return err; } static int mlx5_query_max_pkeys(struct ib_device *ibdev, u16 *max_pkeys) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_core_dev *mdev = dev->mdev; switch (mlx5_get_vport_access_method(ibdev)) { case MLX5_VPORT_ACCESS_METHOD_MAD: return mlx5_query_mad_ifc_max_pkeys(ibdev, max_pkeys); case MLX5_VPORT_ACCESS_METHOD_HCA: case MLX5_VPORT_ACCESS_METHOD_NIC: *max_pkeys = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size)); return 0; default: return -EINVAL; } } static int mlx5_query_vendor_id(struct ib_device *ibdev, u32 *vendor_id) { struct mlx5_ib_dev *dev = to_mdev(ibdev); switch (mlx5_get_vport_access_method(ibdev)) { case MLX5_VPORT_ACCESS_METHOD_MAD: return mlx5_query_mad_ifc_vendor_id(ibdev, vendor_id); case MLX5_VPORT_ACCESS_METHOD_HCA: case MLX5_VPORT_ACCESS_METHOD_NIC: return mlx5_core_query_vendor_id(dev->mdev, vendor_id); default: return -EINVAL; } } static int mlx5_query_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid) { u64 tmp; int err; switch (mlx5_get_vport_access_method(&dev->ib_dev)) { case MLX5_VPORT_ACCESS_METHOD_MAD: return mlx5_query_mad_ifc_node_guid(dev, node_guid); case MLX5_VPORT_ACCESS_METHOD_HCA: err = mlx5_query_hca_vport_node_guid(dev->mdev, &tmp); break; case MLX5_VPORT_ACCESS_METHOD_NIC: err = mlx5_query_nic_vport_node_guid(dev->mdev, &tmp); break; default: return -EINVAL; } if (!err) *node_guid = cpu_to_be64(tmp); return err; } struct mlx5_reg_node_desc { u8 desc[IB_DEVICE_NODE_DESC_MAX]; }; static int mlx5_query_node_desc(struct mlx5_ib_dev *dev, char *node_desc) { struct mlx5_reg_node_desc in; if (mlx5_use_mad_ifc(dev)) return mlx5_query_mad_ifc_node_desc(dev, node_desc); memset(&in, 0, sizeof(in)); return mlx5_core_access_reg(dev->mdev, &in, sizeof(in), node_desc, sizeof(struct mlx5_reg_node_desc), MLX5_REG_NODE_DESC, 0, 0); } static int mlx5_ib_query_device(struct ib_device *ibdev, struct ib_device_attr *props, struct ib_udata *uhw) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_core_dev *mdev = dev->mdev; int err = -ENOMEM; int max_sq_desc; int max_rq_sg; int max_sq_sg; u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz); struct mlx5_ib_query_device_resp resp = {}; size_t resp_len; u64 max_tso; resp_len = sizeof(resp.comp_mask) + sizeof(resp.response_length); if (uhw->outlen && uhw->outlen < resp_len) return -EINVAL; else resp.response_length = resp_len; if (uhw->inlen && !ib_is_udata_cleared(uhw, 0, uhw->inlen)) return -EINVAL; memset(props, 0, sizeof(*props)); err = mlx5_query_system_image_guid(ibdev, &props->sys_image_guid); if (err) return err; err = mlx5_query_max_pkeys(ibdev, &props->max_pkeys); if (err) return err; err = mlx5_query_vendor_id(ibdev, &props->vendor_id); if (err) return err; props->fw_ver = ((u64)fw_rev_maj(dev->mdev) << 32) | (fw_rev_min(dev->mdev) << 16) | fw_rev_sub(dev->mdev); props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN; if (MLX5_CAP_GEN(mdev, pkv)) props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; if (MLX5_CAP_GEN(mdev, qkv)) props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; if (MLX5_CAP_GEN(mdev, apm)) props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; if (MLX5_CAP_GEN(mdev, xrc)) props->device_cap_flags |= IB_DEVICE_XRC; if (MLX5_CAP_GEN(mdev, imaicl)) { props->device_cap_flags |= IB_DEVICE_MEM_WINDOW | IB_DEVICE_MEM_WINDOW_TYPE_2B; props->max_mw = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); /* We support 'Gappy' memory registration too */ props->device_cap_flags |= IB_DEVICE_SG_GAPS_REG; } props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; if (MLX5_CAP_GEN(mdev, sho)) { props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER; /* At this stage no support for signature handover */ props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 | IB_PROT_T10DIF_TYPE_2 | IB_PROT_T10DIF_TYPE_3; props->sig_guard_cap = IB_GUARD_T10DIF_CRC | IB_GUARD_T10DIF_CSUM; } if (MLX5_CAP_GEN(mdev, block_lb_mc)) props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads)) { if (MLX5_CAP_ETH(mdev, csum_cap)) { /* Legacy bit to support old userspace libraries */ props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM; props->raw_packet_caps |= IB_RAW_PACKET_CAP_IP_CSUM; } if (MLX5_CAP_ETH(dev->mdev, vlan_cap)) props->raw_packet_caps |= IB_RAW_PACKET_CAP_CVLAN_STRIPPING; if (field_avail(typeof(resp), tso_caps, uhw->outlen)) { max_tso = MLX5_CAP_ETH(mdev, max_lso_cap); if (max_tso) { resp.tso_caps.max_tso = 1 << max_tso; resp.tso_caps.supported_qpts |= 1 << IB_QPT_RAW_PACKET; resp.response_length += sizeof(resp.tso_caps); } } if (field_avail(typeof(resp), rss_caps, uhw->outlen)) { resp.rss_caps.rx_hash_function = MLX5_RX_HASH_FUNC_TOEPLITZ; resp.rss_caps.rx_hash_fields_mask = MLX5_RX_HASH_SRC_IPV4 | MLX5_RX_HASH_DST_IPV4 | MLX5_RX_HASH_SRC_IPV6 | MLX5_RX_HASH_DST_IPV6 | MLX5_RX_HASH_SRC_PORT_TCP | MLX5_RX_HASH_DST_PORT_TCP | MLX5_RX_HASH_SRC_PORT_UDP | MLX5_RX_HASH_DST_PORT_UDP; resp.response_length += sizeof(resp.rss_caps); } } else { if (field_avail(typeof(resp), tso_caps, uhw->outlen)) resp.response_length += sizeof(resp.tso_caps); if (field_avail(typeof(resp), rss_caps, uhw->outlen)) resp.response_length += sizeof(resp.rss_caps); } if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) { props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; props->device_cap_flags |= IB_DEVICE_UD_TSO; } if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && MLX5_CAP_ETH(dev->mdev, scatter_fcs)) { /* Legacy bit to support old userspace libraries */ props->device_cap_flags |= IB_DEVICE_RAW_SCATTER_FCS; props->raw_packet_caps |= IB_RAW_PACKET_CAP_SCATTER_FCS; } if (mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; props->vendor_part_id = mdev->pdev->device; props->hw_ver = mdev->pdev->revision; props->max_mr_size = ~0ull; props->page_size_cap = ~(min_page_size - 1); props->max_qp = 1 << MLX5_CAP_GEN(mdev, log_max_qp); props->max_qp_wr = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz); max_rq_sg = MLX5_CAP_GEN(mdev, max_wqe_sz_rq) / sizeof(struct mlx5_wqe_data_seg); max_sq_desc = min_t(int, MLX5_CAP_GEN(mdev, max_wqe_sz_sq), 512); max_sq_sg = (max_sq_desc - sizeof(struct mlx5_wqe_ctrl_seg) - sizeof(struct mlx5_wqe_raddr_seg)) / sizeof(struct mlx5_wqe_data_seg); props->max_sge = min(max_rq_sg, max_sq_sg); props->max_sge_rd = MLX5_MAX_SGE_RD; props->max_cq = 1 << MLX5_CAP_GEN(mdev, log_max_cq); props->max_cqe = (1 << MLX5_CAP_GEN(mdev, log_max_cq_sz)) - 1; props->max_mr = 1 << MLX5_CAP_GEN(mdev, log_max_mkey); props->max_pd = 1 << MLX5_CAP_GEN(mdev, log_max_pd); props->max_qp_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_req_qp); props->max_qp_init_rd_atom = 1 << MLX5_CAP_GEN(mdev, log_max_ra_res_qp); props->max_srq = 1 << MLX5_CAP_GEN(mdev, log_max_srq); props->max_srq_wr = (1 << MLX5_CAP_GEN(mdev, log_max_srq_sz)) - 1; props->local_ca_ack_delay = MLX5_CAP_GEN(mdev, local_ca_ack_delay); props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; props->max_srq_sge = max_rq_sg - 1; props->max_fast_reg_page_list_len = 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size); get_atomic_caps(dev, props); props->masked_atomic_cap = IB_ATOMIC_NONE; props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg); props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg); props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * props->max_mcast_grp; props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */ props->max_ah = INT_MAX; props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz); props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING if (MLX5_CAP_GEN(mdev, pg)) props->device_cap_flags |= IB_DEVICE_ON_DEMAND_PAGING; props->odp_caps = dev->odp_caps; #endif if (MLX5_CAP_GEN(mdev, cd)) props->device_cap_flags |= IB_DEVICE_CROSS_CHANNEL; if (!mlx5_core_is_pf(mdev)) props->device_cap_flags |= IB_DEVICE_VIRTUAL_FUNCTION; if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) { props->rss_caps.max_rwq_indirection_tables = 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt); props->rss_caps.max_rwq_indirection_table_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_rqt_size); props->rss_caps.supported_qpts = 1 << IB_QPT_RAW_PACKET; props->max_wq_type_rq = 1 << MLX5_CAP_GEN(dev->mdev, log_max_rq); } if (field_avail(typeof(resp), cqe_comp_caps, uhw->outlen)) { resp.cqe_comp_caps.max_num = MLX5_CAP_GEN(dev->mdev, cqe_compression) ? MLX5_CAP_GEN(dev->mdev, cqe_compression_max_num) : 0; resp.cqe_comp_caps.supported_format = MLX5_IB_CQE_RES_FORMAT_HASH | MLX5_IB_CQE_RES_FORMAT_CSUM; resp.response_length += sizeof(resp.cqe_comp_caps); } if (field_avail(typeof(resp), packet_pacing_caps, uhw->outlen)) { if (MLX5_CAP_QOS(mdev, packet_pacing) && MLX5_CAP_GEN(mdev, qos)) { resp.packet_pacing_caps.qp_rate_limit_max = MLX5_CAP_QOS(mdev, packet_pacing_max_rate); resp.packet_pacing_caps.qp_rate_limit_min = MLX5_CAP_QOS(mdev, packet_pacing_min_rate); resp.packet_pacing_caps.supported_qpts |= 1 << IB_QPT_RAW_PACKET; } resp.response_length += sizeof(resp.packet_pacing_caps); } if (field_avail(typeof(resp), mlx5_ib_support_multi_pkt_send_wqes, uhw->outlen)) { resp.mlx5_ib_support_multi_pkt_send_wqes = MLX5_CAP_ETH(mdev, multi_pkt_send_wqe); resp.response_length += sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes); } if (field_avail(typeof(resp), reserved, uhw->outlen)) resp.response_length += sizeof(resp.reserved); if (uhw->outlen) { err = ib_copy_to_udata(uhw, &resp, resp.response_length); if (err) return err; } return 0; } enum mlx5_ib_width { MLX5_IB_WIDTH_1X = 1 << 0, MLX5_IB_WIDTH_2X = 1 << 1, MLX5_IB_WIDTH_4X = 1 << 2, MLX5_IB_WIDTH_8X = 1 << 3, MLX5_IB_WIDTH_12X = 1 << 4 }; static int translate_active_width(struct ib_device *ibdev, u8 active_width, u8 *ib_width) { struct mlx5_ib_dev *dev = to_mdev(ibdev); int err = 0; if (active_width & MLX5_IB_WIDTH_1X) { *ib_width = IB_WIDTH_1X; } else if (active_width & MLX5_IB_WIDTH_2X) { mlx5_ib_dbg(dev, "active_width %d is not supported by IB spec\n", (int)active_width); err = -EINVAL; } else if (active_width & MLX5_IB_WIDTH_4X) { *ib_width = IB_WIDTH_4X; } else if (active_width & MLX5_IB_WIDTH_8X) { *ib_width = IB_WIDTH_8X; } else if (active_width & MLX5_IB_WIDTH_12X) { *ib_width = IB_WIDTH_12X; } else { mlx5_ib_dbg(dev, "Invalid active_width %d\n", (int)active_width); err = -EINVAL; } return err; } static int mlx5_mtu_to_ib_mtu(int mtu) { switch (mtu) { case 256: return 1; case 512: return 2; case 1024: return 3; case 2048: return 4; case 4096: return 5; default: pr_warn("invalid mtu\n"); return -1; } } enum ib_max_vl_num { __IB_MAX_VL_0 = 1, __IB_MAX_VL_0_1 = 2, __IB_MAX_VL_0_3 = 3, __IB_MAX_VL_0_7 = 4, __IB_MAX_VL_0_14 = 5, }; enum mlx5_vl_hw_cap { MLX5_VL_HW_0 = 1, MLX5_VL_HW_0_1 = 2, MLX5_VL_HW_0_2 = 3, MLX5_VL_HW_0_3 = 4, MLX5_VL_HW_0_4 = 5, MLX5_VL_HW_0_5 = 6, MLX5_VL_HW_0_6 = 7, MLX5_VL_HW_0_7 = 8, MLX5_VL_HW_0_14 = 15 }; static int translate_max_vl_num(struct ib_device *ibdev, u8 vl_hw_cap, u8 *max_vl_num) { switch (vl_hw_cap) { case MLX5_VL_HW_0: *max_vl_num = __IB_MAX_VL_0; break; case MLX5_VL_HW_0_1: *max_vl_num = __IB_MAX_VL_0_1; break; case MLX5_VL_HW_0_3: *max_vl_num = __IB_MAX_VL_0_3; break; case MLX5_VL_HW_0_7: *max_vl_num = __IB_MAX_VL_0_7; break; case MLX5_VL_HW_0_14: *max_vl_num = __IB_MAX_VL_0_14; break; default: return -EINVAL; } return 0; } static int mlx5_query_hca_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_core_dev *mdev = dev->mdev; struct mlx5_hca_vport_context *rep; u16 max_mtu; u16 oper_mtu; int err; u8 ib_link_width_oper; u8 vl_hw_cap; rep = kzalloc(sizeof(*rep), GFP_KERNEL); if (!rep) { err = -ENOMEM; goto out; } /* props being zeroed by the caller, avoid zeroing it here */ err = mlx5_query_hca_vport_context(mdev, 0, port, 0, rep); if (err) goto out; props->lid = rep->lid; props->lmc = rep->lmc; props->sm_lid = rep->sm_lid; props->sm_sl = rep->sm_sl; props->state = rep->vport_state; props->phys_state = rep->port_physical_state; props->port_cap_flags = rep->cap_mask1; props->gid_tbl_len = mlx5_get_gid_table_len(MLX5_CAP_GEN(mdev, gid_table_size)); props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg); props->pkey_tbl_len = mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(mdev, pkey_table_size)); props->bad_pkey_cntr = rep->pkey_violation_counter; props->qkey_viol_cntr = rep->qkey_violation_counter; props->subnet_timeout = rep->subnet_timeout; props->init_type_reply = rep->init_type_reply; props->grh_required = rep->grh_required; err = mlx5_query_port_link_width_oper(mdev, &ib_link_width_oper, port); if (err) goto out; err = translate_active_width(ibdev, ib_link_width_oper, &props->active_width); if (err) goto out; err = mlx5_query_port_ib_proto_oper(mdev, &props->active_speed, port); if (err) goto out; mlx5_query_port_max_mtu(mdev, &max_mtu, port); props->max_mtu = mlx5_mtu_to_ib_mtu(max_mtu); mlx5_query_port_oper_mtu(mdev, &oper_mtu, port); props->active_mtu = mlx5_mtu_to_ib_mtu(oper_mtu); err = mlx5_query_port_vl_hw_cap(mdev, &vl_hw_cap, port); if (err) goto out; err = translate_max_vl_num(ibdev, vl_hw_cap, &props->max_vl_num); out: kfree(rep); return err; } int mlx5_ib_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { switch (mlx5_get_vport_access_method(ibdev)) { case MLX5_VPORT_ACCESS_METHOD_MAD: return mlx5_query_mad_ifc_port(ibdev, port, props); case MLX5_VPORT_ACCESS_METHOD_HCA: return mlx5_query_hca_port(ibdev, port, props); case MLX5_VPORT_ACCESS_METHOD_NIC: mlx5_query_port_roce(ibdev, port, props); return 0; default: return -EINVAL; } } static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_core_dev *mdev = dev->mdev; switch (mlx5_get_vport_access_method(ibdev)) { case MLX5_VPORT_ACCESS_METHOD_MAD: return mlx5_query_mad_ifc_gids(ibdev, port, index, gid); case MLX5_VPORT_ACCESS_METHOD_HCA: return mlx5_query_hca_vport_gid(mdev, 0, port, 0, index, gid); default: return -EINVAL; } } static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_core_dev *mdev = dev->mdev; switch (mlx5_get_vport_access_method(ibdev)) { case MLX5_VPORT_ACCESS_METHOD_MAD: return mlx5_query_mad_ifc_pkey(ibdev, port, index, pkey); case MLX5_VPORT_ACCESS_METHOD_HCA: case MLX5_VPORT_ACCESS_METHOD_NIC: return mlx5_query_hca_vport_pkey(mdev, 0, port, 0, index, pkey); default: return -EINVAL; } } static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask, struct ib_device_modify *props) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_reg_node_desc in; struct mlx5_reg_node_desc out; int err; if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) return -EOPNOTSUPP; if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) return 0; /* * If possible, pass node desc to FW, so it can generate * a 144 trap. If cmd fails, just ignore. */ memcpy(&in, props->node_desc, IB_DEVICE_NODE_DESC_MAX); err = mlx5_core_access_reg(dev->mdev, &in, sizeof(in), &out, sizeof(out), MLX5_REG_NODE_DESC, 0, 1); if (err) return err; memcpy(ibdev->node_desc, props->node_desc, IB_DEVICE_NODE_DESC_MAX); return err; } static int set_port_caps_atomic(struct mlx5_ib_dev *dev, u8 port_num, u32 mask, u32 value) { struct mlx5_hca_vport_context ctx = {}; int err; err = mlx5_query_hca_vport_context(dev->mdev, 0, port_num, 0, &ctx); if (err) return err; if (~ctx.cap_mask1_perm & mask) { mlx5_ib_warn(dev, "trying to change bitmask 0x%X but change supported 0x%X\n", mask, ctx.cap_mask1_perm); return -EINVAL; } ctx.cap_mask1 = value; ctx.cap_mask1_perm = mask; err = mlx5_core_modify_hca_vport_context(dev->mdev, 0, port_num, 0, &ctx); return err; } static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, struct ib_port_modify *props) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct ib_port_attr attr; u32 tmp; int err; u32 change_mask; u32 value; bool is_ib = (mlx5_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND); if (MLX5_CAP_GEN(dev->mdev, ib_virt) && is_ib) { change_mask = props->clr_port_cap_mask | props->set_port_cap_mask; value = ~props->clr_port_cap_mask | props->set_port_cap_mask; return set_port_caps_atomic(dev, port, change_mask, value); } mutex_lock(&dev->cap_mask_mutex); err = ib_query_port(ibdev, port, &attr); if (err) goto out; tmp = (attr.port_cap_flags | props->set_port_cap_mask) & ~props->clr_port_cap_mask; err = mlx5_set_port_caps(dev->mdev, port, tmp); out: mutex_unlock(&dev->cap_mask_mutex); return err; } static void print_lib_caps(struct mlx5_ib_dev *dev, u64 caps) { mlx5_ib_dbg(dev, "MLX5_LIB_CAP_4K_UAR = %s\n", caps & MLX5_LIB_CAP_4K_UAR ? "y" : "n"); } static int calc_total_bfregs(struct mlx5_ib_dev *dev, bool lib_uar_4k, struct mlx5_ib_alloc_ucontext_req_v2 *req, u32 *num_sys_pages) { int uars_per_sys_page; int bfregs_per_sys_page; int ref_bfregs = req->total_num_bfregs; if (req->total_num_bfregs == 0) return -EINVAL; BUILD_BUG_ON(MLX5_MAX_BFREGS % MLX5_NON_FP_BFREGS_IN_PAGE); BUILD_BUG_ON(MLX5_MAX_BFREGS < MLX5_NON_FP_BFREGS_IN_PAGE); if (req->total_num_bfregs > MLX5_MAX_BFREGS) return -ENOMEM; uars_per_sys_page = get_uars_per_sys_page(dev, lib_uar_4k); bfregs_per_sys_page = uars_per_sys_page * MLX5_NON_FP_BFREGS_PER_UAR; req->total_num_bfregs = ALIGN(req->total_num_bfregs, bfregs_per_sys_page); *num_sys_pages = req->total_num_bfregs / bfregs_per_sys_page; if (req->num_low_latency_bfregs > req->total_num_bfregs - 1) return -EINVAL; mlx5_ib_dbg(dev, "uar_4k: fw support %s, lib support %s, user requested %d bfregs, alloated %d, using %d sys pages\n", MLX5_CAP_GEN(dev->mdev, uar_4k) ? "yes" : "no", lib_uar_4k ? "yes" : "no", ref_bfregs, req->total_num_bfregs, *num_sys_pages); return 0; } static int allocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context) { struct mlx5_bfreg_info *bfregi; int err; int i; bfregi = &context->bfregi; for (i = 0; i < bfregi->num_sys_pages; i++) { err = mlx5_cmd_alloc_uar(dev->mdev, &bfregi->sys_pages[i]); if (err) goto error; mlx5_ib_dbg(dev, "allocated uar %d\n", bfregi->sys_pages[i]); } return 0; error: for (--i; i >= 0; i--) if (mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i])) mlx5_ib_warn(dev, "failed to free uar %d\n", i); return err; } static int deallocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context) { struct mlx5_bfreg_info *bfregi; int err; int i; bfregi = &context->bfregi; for (i = 0; i < bfregi->num_sys_pages; i++) { err = mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]); if (err) { mlx5_ib_warn(dev, "failed to free uar %d\n", i); return err; } } return 0; } static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev, struct ib_udata *udata) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_ib_alloc_ucontext_req_v2 req = {}; struct mlx5_ib_alloc_ucontext_resp resp = {}; struct mlx5_ib_ucontext *context; struct mlx5_bfreg_info *bfregi; int ver; int err; size_t reqlen; size_t min_req_v2 = offsetof(struct mlx5_ib_alloc_ucontext_req_v2, max_cqe_version); bool lib_uar_4k; if (!dev->ib_active) return ERR_PTR(-EAGAIN); if (udata->inlen < sizeof(struct ib_uverbs_cmd_hdr)) return ERR_PTR(-EINVAL); reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr); if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req)) ver = 0; else if (reqlen >= min_req_v2) ver = 2; else return ERR_PTR(-EINVAL); err = ib_copy_from_udata(&req, udata, min(reqlen, sizeof(req))); if (err) return ERR_PTR(err); if (req.flags) return ERR_PTR(-EINVAL); if (req.comp_mask || req.reserved0 || req.reserved1 || req.reserved2) return ERR_PTR(-EOPNOTSUPP); req.total_num_bfregs = ALIGN(req.total_num_bfregs, MLX5_NON_FP_BFREGS_PER_UAR); if (req.num_low_latency_bfregs > req.total_num_bfregs - 1) return ERR_PTR(-EINVAL); resp.qp_tab_size = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp); if (mlx5_core_is_pf(dev->mdev) && MLX5_CAP_GEN(dev->mdev, bf)) resp.bf_reg_size = 1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size); resp.cache_line_size = cache_line_size(); resp.max_sq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq); resp.max_rq_desc_sz = MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq); resp.max_send_wqebb = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); resp.max_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz); resp.max_srq_recv_wr = 1 << MLX5_CAP_GEN(dev->mdev, log_max_srq_sz); resp.cqe_version = min_t(__u8, (__u8)MLX5_CAP_GEN(dev->mdev, cqe_version), req.max_cqe_version); resp.log_uar_size = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_ADAPTER_PAGE_SHIFT : PAGE_SHIFT; resp.num_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_CAP_GEN(dev->mdev, num_of_uars_per_page) : 1; resp.response_length = min(offsetof(typeof(resp), response_length) + sizeof(resp.response_length), udata->outlen); context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) return ERR_PTR(-ENOMEM); lib_uar_4k = req.lib_caps & MLX5_LIB_CAP_4K_UAR; bfregi = &context->bfregi; /* updates req->total_num_bfregs */ err = calc_total_bfregs(dev, lib_uar_4k, &req, &bfregi->num_sys_pages); if (err) goto out_ctx; mutex_init(&bfregi->lock); bfregi->lib_uar_4k = lib_uar_4k; bfregi->count = kcalloc(req.total_num_bfregs, sizeof(*bfregi->count), GFP_KERNEL); if (!bfregi->count) { err = -ENOMEM; goto out_ctx; } bfregi->sys_pages = kcalloc(bfregi->num_sys_pages, sizeof(*bfregi->sys_pages), GFP_KERNEL); if (!bfregi->sys_pages) { err = -ENOMEM; goto out_count; } err = allocate_uars(dev, context); if (err) goto out_sys_pages; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range; #endif context->upd_xlt_page = __get_free_page(GFP_KERNEL); if (!context->upd_xlt_page) { err = -ENOMEM; goto out_uars; } mutex_init(&context->upd_xlt_page_mutex); if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) { err = mlx5_core_alloc_transport_domain(dev->mdev, &context->tdn); if (err) goto out_page; } INIT_LIST_HEAD(&context->vma_private_list); INIT_LIST_HEAD(&context->db_page_list); mutex_init(&context->db_page_mutex); resp.tot_bfregs = req.total_num_bfregs; resp.num_ports = MLX5_CAP_GEN(dev->mdev, num_ports); if (field_avail(typeof(resp), cqe_version, udata->outlen)) resp.response_length += sizeof(resp.cqe_version); if (field_avail(typeof(resp), cmds_supp_uhw, udata->outlen)) { resp.cmds_supp_uhw |= MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE | MLX5_USER_CMDS_SUPP_UHW_CREATE_AH; resp.response_length += sizeof(resp.cmds_supp_uhw); } if (field_avail(typeof(resp), eth_min_inline, udata->outlen)) { if (mlx5_ib_port_link_layer(ibdev, 1) == IB_LINK_LAYER_ETHERNET) { mlx5_query_min_inline(dev->mdev, &resp.eth_min_inline); resp.eth_min_inline++; } resp.response_length += sizeof(resp.eth_min_inline); } /* * We don't want to expose information from the PCI bar that is located * after 4096 bytes, so if the arch only supports larger pages, let's * pretend we don't support reading the HCA's core clock. This is also * forced by mmap function. */ if (field_avail(typeof(resp), hca_core_clock_offset, udata->outlen)) { if (PAGE_SIZE <= 4096) { resp.comp_mask |= MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET; resp.hca_core_clock_offset = offsetof(struct mlx5_init_seg, internal_timer_h) % PAGE_SIZE; } resp.response_length += sizeof(resp.hca_core_clock_offset) + sizeof(resp.reserved2); } if (field_avail(typeof(resp), log_uar_size, udata->outlen)) resp.response_length += sizeof(resp.log_uar_size); if (field_avail(typeof(resp), num_uars_per_page, udata->outlen)) resp.response_length += sizeof(resp.num_uars_per_page); err = ib_copy_to_udata(udata, &resp, resp.response_length); if (err) goto out_td; bfregi->ver = ver; bfregi->num_low_latency_bfregs = req.num_low_latency_bfregs; context->cqe_version = resp.cqe_version; context->lib_caps = req.lib_caps; print_lib_caps(dev, context->lib_caps); return &context->ibucontext; out_td: if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn); out_page: free_page(context->upd_xlt_page); out_uars: deallocate_uars(dev, context); out_sys_pages: kfree(bfregi->sys_pages); out_count: kfree(bfregi->count); out_ctx: kfree(context); return ERR_PTR(err); } static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) { struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); struct mlx5_bfreg_info *bfregi; bfregi = &context->bfregi; if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn); free_page(context->upd_xlt_page); deallocate_uars(dev, context); kfree(bfregi->sys_pages); kfree(bfregi->count); kfree(context); return 0; } static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int idx) { int fw_uars_per_page; fw_uars_per_page = MLX5_CAP_GEN(dev->mdev, uar_4k) ? MLX5_UARS_IN_PAGE : 1; return (pci_resource_start(dev->mdev->pdev, 0) >> PAGE_SHIFT) + bfregi->sys_pages[idx] / fw_uars_per_page; } static int get_command(unsigned long offset) { return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK; } static int get_arg(unsigned long offset) { return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1); } static int get_index(unsigned long offset) { return get_arg(offset); } static void mlx5_ib_vma_open(struct vm_area_struct *area) { /* vma_open is called when a new VMA is created on top of our VMA. This * is done through either mremap flow or split_vma (usually due to * mlock, madvise, munmap, etc.) We do not support a clone of the VMA, * as this VMA is strongly hardware related. Therefore we set the * vm_ops of the newly created/cloned VMA to NULL, to prevent it from * calling us again and trying to do incorrect actions. We assume that * the original VMA size is exactly a single page, and therefore all * "splitting" operation will not happen to it. */ area->vm_ops = NULL; } static void mlx5_ib_vma_close(struct vm_area_struct *area) { struct mlx5_ib_vma_private_data *mlx5_ib_vma_priv_data; /* It's guaranteed that all VMAs opened on a FD are closed before the * file itself is closed, therefore no sync is needed with the regular * closing flow. (e.g. mlx5 ib_dealloc_ucontext) * However need a sync with accessing the vma as part of * mlx5_ib_disassociate_ucontext. * The close operation is usually called under mm->mmap_sem except when * process is exiting. * The exiting case is handled explicitly as part of * mlx5_ib_disassociate_ucontext. */ mlx5_ib_vma_priv_data = (struct mlx5_ib_vma_private_data *)area->vm_private_data; /* setting the vma context pointer to null in the mlx5_ib driver's * private data, to protect a race condition in * mlx5_ib_disassociate_ucontext(). */ mlx5_ib_vma_priv_data->vma = NULL; list_del(&mlx5_ib_vma_priv_data->list); kfree(mlx5_ib_vma_priv_data); } static const struct vm_operations_struct mlx5_ib_vm_ops = { .open = mlx5_ib_vma_open, .close = mlx5_ib_vma_close }; static int mlx5_ib_set_vma_data(struct vm_area_struct *vma, struct mlx5_ib_ucontext *ctx) { struct mlx5_ib_vma_private_data *vma_prv; struct list_head *vma_head = &ctx->vma_private_list; vma_prv = kzalloc(sizeof(*vma_prv), GFP_KERNEL); if (!vma_prv) return -ENOMEM; vma_prv->vma = vma; vma->vm_private_data = vma_prv; vma->vm_ops = &mlx5_ib_vm_ops; list_add(&vma_prv->list, vma_head); return 0; } static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) { int ret; struct vm_area_struct *vma; struct mlx5_ib_vma_private_data *vma_private, *n; struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); struct task_struct *owning_process = NULL; struct mm_struct *owning_mm = NULL; owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID); if (!owning_process) return; owning_mm = get_task_mm(owning_process); if (!owning_mm) { pr_info("no mm, disassociate ucontext is pending task termination\n"); while (1) { put_task_struct(owning_process); usleep_range(1000, 2000); owning_process = get_pid_task(ibcontext->tgid, PIDTYPE_PID); if (!owning_process || owning_process->state == TASK_DEAD) { pr_info("disassociate ucontext done, task was terminated\n"); /* in case task was dead need to release the * task struct. */ if (owning_process) put_task_struct(owning_process); return; } } } /* need to protect from a race on closing the vma as part of * mlx5_ib_vma_close. */ down_write(&owning_mm->mmap_sem); list_for_each_entry_safe(vma_private, n, &context->vma_private_list, list) { vma = vma_private->vma; ret = zap_vma_ptes(vma, vma->vm_start, PAGE_SIZE); WARN_ONCE(ret, "%s: zap_vma_ptes failed", __func__); /* context going to be destroyed, should * not access ops any more. */ vma->vm_flags &= ~(VM_SHARED | VM_MAYSHARE); vma->vm_ops = NULL; list_del(&vma_private->list); kfree(vma_private); } up_write(&owning_mm->mmap_sem); mmput(owning_mm); put_task_struct(owning_process); } static inline char *mmap_cmd2str(enum mlx5_ib_mmap_cmd cmd) { switch (cmd) { case MLX5_IB_MMAP_WC_PAGE: return "WC"; case MLX5_IB_MMAP_REGULAR_PAGE: return "best effort WC"; case MLX5_IB_MMAP_NC_PAGE: return "NC"; default: return NULL; } } static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd, struct vm_area_struct *vma, struct mlx5_ib_ucontext *context) { struct mlx5_bfreg_info *bfregi = &context->bfregi; int err; unsigned long idx; phys_addr_t pfn, pa; pgprot_t prot; int uars_per_page; if (vma->vm_end - vma->vm_start != PAGE_SIZE) return -EINVAL; uars_per_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k); idx = get_index(vma->vm_pgoff); if (idx % uars_per_page || idx * uars_per_page >= bfregi->num_sys_pages) { mlx5_ib_warn(dev, "invalid uar index %lu\n", idx); return -EINVAL; } switch (cmd) { case MLX5_IB_MMAP_WC_PAGE: /* Some architectures don't support WC memory */ #if defined(CONFIG_X86) if (!pat_enabled()) return -EPERM; #elif !(defined(CONFIG_PPC) || (defined(CONFIG_ARM) && defined(CONFIG_MMU))) return -EPERM; #endif /* fall through */ case MLX5_IB_MMAP_REGULAR_PAGE: /* For MLX5_IB_MMAP_REGULAR_PAGE do the best effort to get WC */ prot = pgprot_writecombine(vma->vm_page_prot); break; case MLX5_IB_MMAP_NC_PAGE: prot = pgprot_noncached(vma->vm_page_prot); break; default: return -EINVAL; } pfn = uar_index2pfn(dev, bfregi, idx); mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn %pa\n", idx, &pfn); vma->vm_page_prot = prot; err = io_remap_pfn_range(vma, vma->vm_start, pfn, PAGE_SIZE, vma->vm_page_prot); if (err) { mlx5_ib_err(dev, "io_remap_pfn_range failed with error=%d, vm_start=0x%lx, pfn=%pa, mmap_cmd=%s\n", err, vma->vm_start, &pfn, mmap_cmd2str(cmd)); return -EAGAIN; } pa = pfn << PAGE_SHIFT; mlx5_ib_dbg(dev, "mapped %s at 0x%lx, PA %pa\n", mmap_cmd2str(cmd), vma->vm_start, &pa); return mlx5_ib_set_vma_data(vma, context); } static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) { struct mlx5_ib_ucontext *context = to_mucontext(ibcontext); struct mlx5_ib_dev *dev = to_mdev(ibcontext->device); unsigned long command; phys_addr_t pfn; command = get_command(vma->vm_pgoff); switch (command) { case MLX5_IB_MMAP_WC_PAGE: case MLX5_IB_MMAP_NC_PAGE: case MLX5_IB_MMAP_REGULAR_PAGE: return uar_mmap(dev, command, vma, context); case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES: return -ENOSYS; case MLX5_IB_MMAP_CORE_CLOCK: if (vma->vm_end - vma->vm_start != PAGE_SIZE) return -EINVAL; if (vma->vm_flags & VM_WRITE) return -EPERM; /* Don't expose to user-space information it shouldn't have */ if (PAGE_SIZE > 4096) return -EOPNOTSUPP; vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); pfn = (dev->mdev->iseg_base + offsetof(struct mlx5_init_seg, internal_timer_h)) >> PAGE_SHIFT; if (io_remap_pfn_range(vma, vma->vm_start, pfn, PAGE_SIZE, vma->vm_page_prot)) return -EAGAIN; mlx5_ib_dbg(dev, "mapped internal timer at 0x%lx, PA 0x%llx\n", vma->vm_start, (unsigned long long)pfn << PAGE_SHIFT); break; default: return -EINVAL; } return 0; } static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_udata *udata) { struct mlx5_ib_alloc_pd_resp resp; struct mlx5_ib_pd *pd; int err; pd = kmalloc(sizeof(*pd), GFP_KERNEL); if (!pd) return ERR_PTR(-ENOMEM); err = mlx5_core_alloc_pd(to_mdev(ibdev)->mdev, &pd->pdn); if (err) { kfree(pd); return ERR_PTR(err); } if (context) { resp.pdn = pd->pdn; if (ib_copy_to_udata(udata, &resp, sizeof(resp))) { mlx5_core_dealloc_pd(to_mdev(ibdev)->mdev, pd->pdn); kfree(pd); return ERR_PTR(-EFAULT); } } return &pd->ibpd; } static int mlx5_ib_dealloc_pd(struct ib_pd *pd) { struct mlx5_ib_dev *mdev = to_mdev(pd->device); struct mlx5_ib_pd *mpd = to_mpd(pd); mlx5_core_dealloc_pd(mdev->mdev, mpd->pdn); kfree(mpd); return 0; } enum { MATCH_CRITERIA_ENABLE_OUTER_BIT, MATCH_CRITERIA_ENABLE_MISC_BIT, MATCH_CRITERIA_ENABLE_INNER_BIT }; #define HEADER_IS_ZERO(match_criteria, headers) \ !(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \ 0, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \ static u8 get_match_criteria_enable(u32 *match_criteria) { u8 match_criteria_enable; match_criteria_enable = (!HEADER_IS_ZERO(match_criteria, outer_headers)) << MATCH_CRITERIA_ENABLE_OUTER_BIT; match_criteria_enable |= (!HEADER_IS_ZERO(match_criteria, misc_parameters)) << MATCH_CRITERIA_ENABLE_MISC_BIT; match_criteria_enable |= (!HEADER_IS_ZERO(match_criteria, inner_headers)) << MATCH_CRITERIA_ENABLE_INNER_BIT; return match_criteria_enable; } static void set_proto(void *outer_c, void *outer_v, u8 mask, u8 val) { MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask); MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val); } static void set_flow_label(void *misc_c, void *misc_v, u8 mask, u8 val, bool inner) { if (inner) { MLX5_SET(fte_match_set_misc, misc_c, inner_ipv6_flow_label, mask); MLX5_SET(fte_match_set_misc, misc_v, inner_ipv6_flow_label, val); } else { MLX5_SET(fte_match_set_misc, misc_c, outer_ipv6_flow_label, mask); MLX5_SET(fte_match_set_misc, misc_v, outer_ipv6_flow_label, val); } } static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val) { MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask); MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val); MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2); MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2); } #define LAST_ETH_FIELD vlan_tag #define LAST_IB_FIELD sl #define LAST_IPV4_FIELD tos #define LAST_IPV6_FIELD traffic_class #define LAST_TCP_UDP_FIELD src_port #define LAST_TUNNEL_FIELD tunnel_id #define LAST_FLOW_TAG_FIELD tag_id #define LAST_DROP_FIELD size /* Field is the last supported field */ #define FIELDS_NOT_SUPPORTED(filter, field)\ memchr_inv((void *)&filter.field +\ sizeof(filter.field), 0,\ sizeof(filter) -\ offsetof(typeof(filter), field) -\ sizeof(filter.field)) #define IPV4_VERSION 4 #define IPV6_VERSION 6 static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c, u32 *match_v, const union ib_flow_spec *ib_spec, u32 *tag_id, bool *is_drop) { void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c, misc_parameters); void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v, misc_parameters); void *headers_c; void *headers_v; int match_ipv; if (ib_spec->type & IB_FLOW_SPEC_INNER) { headers_c = MLX5_ADDR_OF(fte_match_param, match_c, inner_headers); headers_v = MLX5_ADDR_OF(fte_match_param, match_v, inner_headers); match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ft_field_support.inner_ip_version); } else { headers_c = MLX5_ADDR_OF(fte_match_param, match_c, outer_headers); headers_v = MLX5_ADDR_OF(fte_match_param, match_v, outer_headers); match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ft_field_support.outer_ip_version); } switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { case IB_FLOW_SPEC_ETH: if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) return -EOPNOTSUPP; ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dmac_47_16), ib_spec->eth.mask.dst_mac); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dmac_47_16), ib_spec->eth.val.dst_mac); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, smac_47_16), ib_spec->eth.mask.src_mac); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, smac_47_16), ib_spec->eth.val.src_mac); if (ib_spec->eth.mask.vlan_tag) { MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1); MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1); MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, ntohs(ib_spec->eth.mask.vlan_tag)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, ntohs(ib_spec->eth.val.vlan_tag)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_cfi, ntohs(ib_spec->eth.mask.vlan_tag) >> 12); MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_cfi, ntohs(ib_spec->eth.val.vlan_tag) >> 12); MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, ntohs(ib_spec->eth.mask.vlan_tag) >> 13); MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, ntohs(ib_spec->eth.val.vlan_tag) >> 13); } MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, ntohs(ib_spec->eth.mask.ether_type)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ntohs(ib_spec->eth.val.ether_type)); break; case IB_FLOW_SPEC_IPV4: if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) return -EOPNOTSUPP; if (match_ipv) { MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_version, 0xf); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version, IPV4_VERSION); } else { MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, 0xffff); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP); } memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv4_layout.ipv4), &ib_spec->ipv4.mask.src_ip, sizeof(ib_spec->ipv4.mask.src_ip)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv4_layout.ipv4), &ib_spec->ipv4.val.src_ip, sizeof(ib_spec->ipv4.val.src_ip)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv4_layout.ipv4), &ib_spec->ipv4.mask.dst_ip, sizeof(ib_spec->ipv4.mask.dst_ip)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv4_layout.ipv4), &ib_spec->ipv4.val.dst_ip, sizeof(ib_spec->ipv4.val.dst_ip)); set_tos(headers_c, headers_v, ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos); set_proto(headers_c, headers_v, ib_spec->ipv4.mask.proto, ib_spec->ipv4.val.proto); break; case IB_FLOW_SPEC_IPV6: if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD)) return -EOPNOTSUPP; if (match_ipv) { MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_version, 0xf); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version, IPV6_VERSION); } else { MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, 0xffff); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6); } memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv6_layout.ipv6), &ib_spec->ipv6.mask.src_ip, sizeof(ib_spec->ipv6.mask.src_ip)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv6_layout.ipv6), &ib_spec->ipv6.val.src_ip, sizeof(ib_spec->ipv6.val.src_ip)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &ib_spec->ipv6.mask.dst_ip, sizeof(ib_spec->ipv6.mask.dst_ip)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &ib_spec->ipv6.val.dst_ip, sizeof(ib_spec->ipv6.val.dst_ip)); set_tos(headers_c, headers_v, ib_spec->ipv6.mask.traffic_class, ib_spec->ipv6.val.traffic_class); set_proto(headers_c, headers_v, ib_spec->ipv6.mask.next_hdr, ib_spec->ipv6.val.next_hdr); set_flow_label(misc_params_c, misc_params_v, ntohl(ib_spec->ipv6.mask.flow_label), ntohl(ib_spec->ipv6.val.flow_label), ib_spec->type & IB_FLOW_SPEC_INNER); break; case IB_FLOW_SPEC_TCP: if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) return -EOPNOTSUPP; MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol, 0xff); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_TCP); MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport, ntohs(ib_spec->tcp_udp.mask.src_port)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport, ntohs(ib_spec->tcp_udp.val.src_port)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport, ntohs(ib_spec->tcp_udp.mask.dst_port)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport, ntohs(ib_spec->tcp_udp.val.dst_port)); break; case IB_FLOW_SPEC_UDP: if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) return -EOPNOTSUPP; MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol, 0xff); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP); MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport, ntohs(ib_spec->tcp_udp.mask.src_port)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport, ntohs(ib_spec->tcp_udp.val.src_port)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport, ntohs(ib_spec->tcp_udp.mask.dst_port)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, ntohs(ib_spec->tcp_udp.val.dst_port)); break; case IB_FLOW_SPEC_VXLAN_TUNNEL: if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask, LAST_TUNNEL_FIELD)) return -EOPNOTSUPP; MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni, ntohl(ib_spec->tunnel.mask.tunnel_id)); MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni, ntohl(ib_spec->tunnel.val.tunnel_id)); break; case IB_FLOW_SPEC_ACTION_TAG: if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag, LAST_FLOW_TAG_FIELD)) return -EOPNOTSUPP; if (ib_spec->flow_tag.tag_id >= BIT(24)) return -EINVAL; *tag_id = ib_spec->flow_tag.tag_id; break; case IB_FLOW_SPEC_ACTION_DROP: if (FIELDS_NOT_SUPPORTED(ib_spec->drop, LAST_DROP_FIELD)) return -EOPNOTSUPP; *is_drop = true; break; default: return -EINVAL; } return 0; } /* If a flow could catch both multicast and unicast packets, * it won't fall into the multicast flow steering table and this rule * could steal other multicast packets. */ static bool flow_is_multicast_only(struct ib_flow_attr *ib_attr) { struct ib_flow_spec_eth *eth_spec; if (ib_attr->type != IB_FLOW_ATTR_NORMAL || ib_attr->size < sizeof(struct ib_flow_attr) + sizeof(struct ib_flow_spec_eth) || ib_attr->num_of_specs < 1) return false; eth_spec = (struct ib_flow_spec_eth *)(ib_attr + 1); if (eth_spec->type != IB_FLOW_SPEC_ETH || eth_spec->size != sizeof(*eth_spec)) return false; return is_multicast_ether_addr(eth_spec->mask.dst_mac) && is_multicast_ether_addr(eth_spec->val.dst_mac); } static bool is_valid_ethertype(struct mlx5_core_dev *mdev, const struct ib_flow_attr *flow_attr, bool check_inner) { union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1); int match_ipv = check_inner ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ft_field_support.inner_ip_version) : MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ft_field_support.outer_ip_version); int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0; bool ipv4_spec_valid, ipv6_spec_valid; unsigned int ip_spec_type = 0; bool has_ethertype = false; unsigned int spec_index; bool mask_valid = true; u16 eth_type = 0; bool type_valid; /* Validate that ethertype is correct */ for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) { if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) && ib_spec->eth.mask.ether_type) { mask_valid = (ib_spec->eth.mask.ether_type == htons(0xffff)); has_ethertype = true; eth_type = ntohs(ib_spec->eth.val.ether_type); } else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) || (ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) { ip_spec_type = ib_spec->type; } ib_spec = (void *)ib_spec + ib_spec->size; } type_valid = (!has_ethertype) || (!ip_spec_type); if (!type_valid && mask_valid) { ipv4_spec_valid = (eth_type == ETH_P_IP) && (ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit)); ipv6_spec_valid = (eth_type == ETH_P_IPV6) && (ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit)); type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) || (((eth_type == ETH_P_MPLS_UC) || (eth_type == ETH_P_MPLS_MC)) && match_ipv); } return type_valid; } static bool is_valid_attr(struct mlx5_core_dev *mdev, const struct ib_flow_attr *flow_attr) { return is_valid_ethertype(mdev, flow_attr, false) && is_valid_ethertype(mdev, flow_attr, true); } static void put_flow_table(struct mlx5_ib_dev *dev, struct mlx5_ib_flow_prio *prio, bool ft_added) { prio->refcount -= !!ft_added; if (!prio->refcount) { mlx5_destroy_flow_table(prio->flow_table); prio->flow_table = NULL; } } static int mlx5_ib_destroy_flow(struct ib_flow *flow_id) { struct mlx5_ib_dev *dev = to_mdev(flow_id->qp->device); struct mlx5_ib_flow_handler *handler = container_of(flow_id, struct mlx5_ib_flow_handler, ibflow); struct mlx5_ib_flow_handler *iter, *tmp; mutex_lock(&dev->flow_db.lock); list_for_each_entry_safe(iter, tmp, &handler->list, list) { mlx5_del_flow_rules(iter->rule); put_flow_table(dev, iter->prio, true); list_del(&iter->list); kfree(iter); } mlx5_del_flow_rules(handler->rule); put_flow_table(dev, handler->prio, true); mutex_unlock(&dev->flow_db.lock); kfree(handler); return 0; } static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap) { priority *= 2; if (!dont_trap) priority++; return priority; } enum flow_table_type { MLX5_IB_FT_RX, MLX5_IB_FT_TX }; #define MLX5_FS_MAX_TYPES 6 #define MLX5_FS_MAX_ENTRIES BIT(16) static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev, struct ib_flow_attr *flow_attr, enum flow_table_type ft_type) { bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP; struct mlx5_flow_namespace *ns = NULL; struct mlx5_ib_flow_prio *prio; struct mlx5_flow_table *ft; int max_table_size; int num_entries; int num_groups; int priority; int err = 0; max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, log_max_ft_size)); if (flow_attr->type == IB_FLOW_ATTR_NORMAL) { if (flow_is_multicast_only(flow_attr) && !dont_trap) priority = MLX5_IB_FLOW_MCAST_PRIO; else priority = ib_prio_to_core_prio(flow_attr->priority, dont_trap); ns = mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS); num_entries = MLX5_FS_MAX_ENTRIES; num_groups = MLX5_FS_MAX_TYPES; prio = &dev->flow_db.prios[priority]; } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) { ns = mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_LEFTOVERS); build_leftovers_ft_param(&priority, &num_entries, &num_groups); prio = &dev->flow_db.prios[MLX5_IB_FLOW_LEFTOVERS_PRIO]; } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) { if (!MLX5_CAP_FLOWTABLE(dev->mdev, allow_sniffer_and_nic_rx_shared_tir)) return ERR_PTR(-ENOTSUPP); ns = mlx5_get_flow_namespace(dev->mdev, ft_type == MLX5_IB_FT_RX ? MLX5_FLOW_NAMESPACE_SNIFFER_RX : MLX5_FLOW_NAMESPACE_SNIFFER_TX); prio = &dev->flow_db.sniffer[ft_type]; priority = 0; num_entries = 1; num_groups = 1; } if (!ns) return ERR_PTR(-ENOTSUPP); if (num_entries > max_table_size) return ERR_PTR(-ENOMEM); ft = prio->flow_table; if (!ft) { ft = mlx5_create_auto_grouped_flow_table(ns, priority, num_entries, num_groups, 0, 0); if (!IS_ERR(ft)) { prio->refcount = 0; prio->flow_table = ft; } else { err = PTR_ERR(ft); } } return err ? ERR_PTR(err) : prio; } static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev, struct mlx5_ib_flow_prio *ft_prio, const struct ib_flow_attr *flow_attr, struct mlx5_flow_destination *dst) { struct mlx5_flow_table *ft = ft_prio->flow_table; struct mlx5_ib_flow_handler *handler; struct mlx5_flow_act flow_act = {0}; struct mlx5_flow_spec *spec; struct mlx5_flow_destination *rule_dst = dst; const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr); unsigned int spec_index; u32 flow_tag = MLX5_FS_DEFAULT_FLOW_TAG; bool is_drop = false; int err = 0; int dest_num = 1; if (!is_valid_attr(dev->mdev, flow_attr)) return ERR_PTR(-EINVAL); spec = mlx5_vzalloc(sizeof(*spec)); handler = kzalloc(sizeof(*handler), GFP_KERNEL); if (!handler || !spec) { err = -ENOMEM; goto free; } INIT_LIST_HEAD(&handler->list); for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) { err = parse_flow_attr(dev->mdev, spec->match_criteria, spec->match_value, ib_flow, &flow_tag, &is_drop); if (err < 0) goto free; ib_flow += ((union ib_flow_spec *)ib_flow)->size; } spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria); if (is_drop) { flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP; rule_dst = NULL; dest_num = 0; } else { flow_act.action = dst ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST : MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO; } if (flow_tag != MLX5_FS_DEFAULT_FLOW_TAG && (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) { mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n", flow_tag, flow_attr->type); err = -EINVAL; goto free; } flow_act.flow_tag = flow_tag; handler->rule = mlx5_add_flow_rules(ft, spec, &flow_act, rule_dst, dest_num); if (IS_ERR(handler->rule)) { err = PTR_ERR(handler->rule); goto free; } ft_prio->refcount++; handler->prio = ft_prio; ft_prio->flow_table = ft; free: if (err) kfree(handler); kvfree(spec); return err ? ERR_PTR(err) : handler; } static struct mlx5_ib_flow_handler *create_dont_trap_rule(struct mlx5_ib_dev *dev, struct mlx5_ib_flow_prio *ft_prio, struct ib_flow_attr *flow_attr, struct mlx5_flow_destination *dst) { struct mlx5_ib_flow_handler *handler_dst = NULL; struct mlx5_ib_flow_handler *handler = NULL; handler = create_flow_rule(dev, ft_prio, flow_attr, NULL); if (!IS_ERR(handler)) { handler_dst = create_flow_rule(dev, ft_prio, flow_attr, dst); if (IS_ERR(handler_dst)) { mlx5_del_flow_rules(handler->rule); ft_prio->refcount--; kfree(handler); handler = handler_dst; } else { list_add(&handler_dst->list, &handler->list); } } return handler; } enum { LEFTOVERS_MC, LEFTOVERS_UC, }; static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev, struct mlx5_ib_flow_prio *ft_prio, struct ib_flow_attr *flow_attr, struct mlx5_flow_destination *dst) { struct mlx5_ib_flow_handler *handler_ucast = NULL; struct mlx5_ib_flow_handler *handler = NULL; static struct { struct ib_flow_attr flow_attr; struct ib_flow_spec_eth eth_flow; } leftovers_specs[] = { [LEFTOVERS_MC] = { .flow_attr = { .num_of_specs = 1, .size = sizeof(leftovers_specs[0]) }, .eth_flow = { .type = IB_FLOW_SPEC_ETH, .size = sizeof(struct ib_flow_spec_eth), .mask = {.dst_mac = {0x1} }, .val = {.dst_mac = {0x1} } } }, [LEFTOVERS_UC] = { .flow_attr = { .num_of_specs = 1, .size = sizeof(leftovers_specs[0]) }, .eth_flow = { .type = IB_FLOW_SPEC_ETH, .size = sizeof(struct ib_flow_spec_eth), .mask = {.dst_mac = {0x1} }, .val = {.dst_mac = {} } } } }; handler = create_flow_rule(dev, ft_prio, &leftovers_specs[LEFTOVERS_MC].flow_attr, dst); if (!IS_ERR(handler) && flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) { handler_ucast = create_flow_rule(dev, ft_prio, &leftovers_specs[LEFTOVERS_UC].flow_attr, dst); if (IS_ERR(handler_ucast)) { mlx5_del_flow_rules(handler->rule); ft_prio->refcount--; kfree(handler); handler = handler_ucast; } else { list_add(&handler_ucast->list, &handler->list); } } return handler; } static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev, struct mlx5_ib_flow_prio *ft_rx, struct mlx5_ib_flow_prio *ft_tx, struct mlx5_flow_destination *dst) { struct mlx5_ib_flow_handler *handler_rx; struct mlx5_ib_flow_handler *handler_tx; int err; static const struct ib_flow_attr flow_attr = { .num_of_specs = 0, .size = sizeof(flow_attr) }; handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst); if (IS_ERR(handler_rx)) { err = PTR_ERR(handler_rx); goto err; } handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst); if (IS_ERR(handler_tx)) { err = PTR_ERR(handler_tx); goto err_tx; } list_add(&handler_tx->list, &handler_rx->list); return handler_rx; err_tx: mlx5_del_flow_rules(handler_rx->rule); ft_rx->refcount--; kfree(handler_rx); err: return ERR_PTR(err); } static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, int domain) { struct mlx5_ib_dev *dev = to_mdev(qp->device); struct mlx5_ib_qp *mqp = to_mqp(qp); struct mlx5_ib_flow_handler *handler = NULL; struct mlx5_flow_destination *dst = NULL; struct mlx5_ib_flow_prio *ft_prio_tx = NULL; struct mlx5_ib_flow_prio *ft_prio; int err; if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) return ERR_PTR(-ENOMEM); if (domain != IB_FLOW_DOMAIN_USER || flow_attr->port > MLX5_CAP_GEN(dev->mdev, num_ports) || (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)) return ERR_PTR(-EINVAL); dst = kzalloc(sizeof(*dst), GFP_KERNEL); if (!dst) return ERR_PTR(-ENOMEM); mutex_lock(&dev->flow_db.lock); ft_prio = get_flow_table(dev, flow_attr, MLX5_IB_FT_RX); if (IS_ERR(ft_prio)) { err = PTR_ERR(ft_prio); goto unlock; } if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) { ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX); if (IS_ERR(ft_prio_tx)) { err = PTR_ERR(ft_prio_tx); ft_prio_tx = NULL; goto destroy_ft; } } dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR; if (mqp->flags & MLX5_IB_QP_RSS) dst->tir_num = mqp->rss_qp.tirn; else dst->tir_num = mqp->raw_packet_qp.rq.tirn; if (flow_attr->type == IB_FLOW_ATTR_NORMAL) { if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) { handler = create_dont_trap_rule(dev, ft_prio, flow_attr, dst); } else { handler = create_flow_rule(dev, ft_prio, flow_attr, dst); } } else if (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT || flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT) { handler = create_leftovers_rule(dev, ft_prio, flow_attr, dst); } else if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) { handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst); } else { err = -EINVAL; goto destroy_ft; } if (IS_ERR(handler)) { err = PTR_ERR(handler); handler = NULL; goto destroy_ft; } mutex_unlock(&dev->flow_db.lock); kfree(dst); return &handler->ibflow; destroy_ft: put_flow_table(dev, ft_prio, false); if (ft_prio_tx) put_flow_table(dev, ft_prio_tx, false); unlock: mutex_unlock(&dev->flow_db.lock); kfree(dst); kfree(handler); return ERR_PTR(err); } static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { struct mlx5_ib_dev *dev = to_mdev(ibqp->device); int err; err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num); if (err) mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n", ibqp->qp_num, gid->raw); return err; } static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { struct mlx5_ib_dev *dev = to_mdev(ibqp->device); int err; err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num); if (err) mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n", ibqp->qp_num, gid->raw); return err; } static int init_node_data(struct mlx5_ib_dev *dev) { int err; err = mlx5_query_node_desc(dev, dev->ib_dev.node_desc); if (err) return err; dev->mdev->rev_id = dev->mdev->pdev->revision; return mlx5_query_node_guid(dev, &dev->ib_dev.node_guid); } static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr, char *buf) { struct mlx5_ib_dev *dev = container_of(device, struct mlx5_ib_dev, ib_dev.dev); return sprintf(buf, "%d\n", dev->mdev->priv.fw_pages); } static ssize_t show_reg_pages(struct device *device, struct device_attribute *attr, char *buf) { struct mlx5_ib_dev *dev = container_of(device, struct mlx5_ib_dev, ib_dev.dev); return sprintf(buf, "%d\n", atomic_read(&dev->mdev->priv.reg_pages)); } static ssize_t show_hca(struct device *device, struct device_attribute *attr, char *buf) { struct mlx5_ib_dev *dev = container_of(device, struct mlx5_ib_dev, ib_dev.dev); return sprintf(buf, "MT%d\n", dev->mdev->pdev->device); } static ssize_t show_rev(struct device *device, struct device_attribute *attr, char *buf) { struct mlx5_ib_dev *dev = container_of(device, struct mlx5_ib_dev, ib_dev.dev); return sprintf(buf, "%x\n", dev->mdev->rev_id); } static ssize_t show_board(struct device *device, struct device_attribute *attr, char *buf) { struct mlx5_ib_dev *dev = container_of(device, struct mlx5_ib_dev, ib_dev.dev); return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN, dev->mdev->board_id); } static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL); static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL); static struct device_attribute *mlx5_class_attributes[] = { &dev_attr_hw_rev, &dev_attr_hca_type, &dev_attr_board_id, &dev_attr_fw_pages, &dev_attr_reg_pages, }; static void pkey_change_handler(struct work_struct *work) { struct mlx5_ib_port_resources *ports = container_of(work, struct mlx5_ib_port_resources, pkey_change_work); mutex_lock(&ports->devr->mutex); mlx5_ib_gsi_pkey_change(ports->gsi); mutex_unlock(&ports->devr->mutex); } static void mlx5_ib_handle_internal_error(struct mlx5_ib_dev *ibdev) { struct mlx5_ib_qp *mqp; struct mlx5_ib_cq *send_mcq, *recv_mcq; struct mlx5_core_cq *mcq; struct list_head cq_armed_list; unsigned long flags_qp; unsigned long flags_cq; unsigned long flags; INIT_LIST_HEAD(&cq_armed_list); /* Go over qp list reside on that ibdev, sync with create/destroy qp.*/ spin_lock_irqsave(&ibdev->reset_flow_resource_lock, flags); list_for_each_entry(mqp, &ibdev->qp_list, qps_list) { spin_lock_irqsave(&mqp->sq.lock, flags_qp); if (mqp->sq.tail != mqp->sq.head) { send_mcq = to_mcq(mqp->ibqp.send_cq); spin_lock_irqsave(&send_mcq->lock, flags_cq); if (send_mcq->mcq.comp && mqp->ibqp.send_cq->comp_handler) { if (!send_mcq->mcq.reset_notify_added) { send_mcq->mcq.reset_notify_added = 1; list_add_tail(&send_mcq->mcq.reset_notify, &cq_armed_list); } } spin_unlock_irqrestore(&send_mcq->lock, flags_cq); } spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); spin_lock_irqsave(&mqp->rq.lock, flags_qp); /* no handling is needed for SRQ */ if (!mqp->ibqp.srq) { if (mqp->rq.tail != mqp->rq.head) { recv_mcq = to_mcq(mqp->ibqp.recv_cq); spin_lock_irqsave(&recv_mcq->lock, flags_cq); if (recv_mcq->mcq.comp && mqp->ibqp.recv_cq->comp_handler) { if (!recv_mcq->mcq.reset_notify_added) { recv_mcq->mcq.reset_notify_added = 1; list_add_tail(&recv_mcq->mcq.reset_notify, &cq_armed_list); } } spin_unlock_irqrestore(&recv_mcq->lock, flags_cq); } } spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); } /*At that point all inflight post send were put to be executed as of we * lock/unlock above locks Now need to arm all involved CQs. */ list_for_each_entry(mcq, &cq_armed_list, reset_notify) { mcq->comp(mcq); } spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); } static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context, enum mlx5_dev_event event, unsigned long param) { struct mlx5_ib_dev *ibdev = (struct mlx5_ib_dev *)context; struct ib_event ibev; bool fatal = false; u8 port = 0; switch (event) { case MLX5_DEV_EVENT_SYS_ERROR: ibev.event = IB_EVENT_DEVICE_FATAL; mlx5_ib_handle_internal_error(ibdev); fatal = true; break; case MLX5_DEV_EVENT_PORT_UP: case MLX5_DEV_EVENT_PORT_DOWN: case MLX5_DEV_EVENT_PORT_INITIALIZED: port = (u8)param; /* In RoCE, port up/down events are handled in * mlx5_netdev_event(). */ if (mlx5_ib_port_link_layer(&ibdev->ib_dev, port) == IB_LINK_LAYER_ETHERNET) return; ibev.event = (event == MLX5_DEV_EVENT_PORT_UP) ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; break; case MLX5_DEV_EVENT_LID_CHANGE: ibev.event = IB_EVENT_LID_CHANGE; port = (u8)param; break; case MLX5_DEV_EVENT_PKEY_CHANGE: ibev.event = IB_EVENT_PKEY_CHANGE; port = (u8)param; schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work); break; case MLX5_DEV_EVENT_GUID_CHANGE: ibev.event = IB_EVENT_GID_CHANGE; port = (u8)param; break; case MLX5_DEV_EVENT_CLIENT_REREG: ibev.event = IB_EVENT_CLIENT_REREGISTER; port = (u8)param; break; default: return; } ibev.device = &ibdev->ib_dev; ibev.element.port_num = port; if (port < 1 || port > ibdev->num_ports) { mlx5_ib_warn(ibdev, "warning: event on port %d\n", port); return; } if (ibdev->ib_active) ib_dispatch_event(&ibev); if (fatal) ibdev->ib_active = false; } static int set_has_smi_cap(struct mlx5_ib_dev *dev) { struct mlx5_hca_vport_context vport_ctx; int err; int port; for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) { dev->mdev->port_caps[port - 1].has_smi = false; if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB) { if (MLX5_CAP_GEN(dev->mdev, ib_virt)) { err = mlx5_query_hca_vport_context(dev->mdev, 0, port, 0, &vport_ctx); if (err) { mlx5_ib_err(dev, "query_hca_vport_context for port=%d failed %d\n", port, err); return err; } dev->mdev->port_caps[port - 1].has_smi = vport_ctx.has_smi; } else { dev->mdev->port_caps[port - 1].has_smi = true; } } } return 0; } static void get_ext_port_caps(struct mlx5_ib_dev *dev) { int port; for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) mlx5_query_ext_port_caps(dev, port); } static int get_port_caps(struct mlx5_ib_dev *dev) { struct ib_device_attr *dprops = NULL; struct ib_port_attr *pprops = NULL; int err = -ENOMEM; int port; struct ib_udata uhw = {.inlen = 0, .outlen = 0}; pprops = kmalloc(sizeof(*pprops), GFP_KERNEL); if (!pprops) goto out; dprops = kmalloc(sizeof(*dprops), GFP_KERNEL); if (!dprops) goto out; err = set_has_smi_cap(dev); if (err) goto out; err = mlx5_ib_query_device(&dev->ib_dev, dprops, &uhw); if (err) { mlx5_ib_warn(dev, "query_device failed %d\n", err); goto out; } for (port = 1; port <= MLX5_CAP_GEN(dev->mdev, num_ports); port++) { memset(pprops, 0, sizeof(*pprops)); err = mlx5_ib_query_port(&dev->ib_dev, port, pprops); if (err) { mlx5_ib_warn(dev, "query_port %d failed %d\n", port, err); break; } dev->mdev->port_caps[port - 1].pkey_table_len = dprops->max_pkeys; dev->mdev->port_caps[port - 1].gid_table_len = pprops->gid_tbl_len; mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n", dprops->max_pkeys, pprops->gid_tbl_len); } out: kfree(pprops); kfree(dprops); return err; } static void destroy_umrc_res(struct mlx5_ib_dev *dev) { int err; err = mlx5_mr_cache_cleanup(dev); if (err) mlx5_ib_warn(dev, "mr cache cleanup failed\n"); mlx5_ib_destroy_qp(dev->umrc.qp); ib_free_cq(dev->umrc.cq); ib_dealloc_pd(dev->umrc.pd); } enum { MAX_UMR_WR = 128, }; static int create_umr_res(struct mlx5_ib_dev *dev) { struct ib_qp_init_attr *init_attr = NULL; struct ib_qp_attr *attr = NULL; struct ib_pd *pd; struct ib_cq *cq; struct ib_qp *qp; int ret; attr = kzalloc(sizeof(*attr), GFP_KERNEL); init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL); if (!attr || !init_attr) { ret = -ENOMEM; goto error_0; } pd = ib_alloc_pd(&dev->ib_dev, 0); if (IS_ERR(pd)) { mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n"); ret = PTR_ERR(pd); goto error_0; } cq = ib_alloc_cq(&dev->ib_dev, NULL, 128, 0, IB_POLL_SOFTIRQ); if (IS_ERR(cq)) { mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n"); ret = PTR_ERR(cq); goto error_2; } init_attr->send_cq = cq; init_attr->recv_cq = cq; init_attr->sq_sig_type = IB_SIGNAL_ALL_WR; init_attr->cap.max_send_wr = MAX_UMR_WR; init_attr->cap.max_send_sge = 1; init_attr->qp_type = MLX5_IB_QPT_REG_UMR; init_attr->port_num = 1; qp = mlx5_ib_create_qp(pd, init_attr, NULL); if (IS_ERR(qp)) { mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n"); ret = PTR_ERR(qp); goto error_3; } qp->device = &dev->ib_dev; qp->real_qp = qp; qp->uobject = NULL; qp->qp_type = MLX5_IB_QPT_REG_UMR; attr->qp_state = IB_QPS_INIT; attr->port_num = 1; ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT, NULL); if (ret) { mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n"); goto error_4; } memset(attr, 0, sizeof(*attr)); attr->qp_state = IB_QPS_RTR; attr->path_mtu = IB_MTU_256; ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); if (ret) { mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n"); goto error_4; } memset(attr, 0, sizeof(*attr)); attr->qp_state = IB_QPS_RTS; ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL); if (ret) { mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n"); goto error_4; } dev->umrc.qp = qp; dev->umrc.cq = cq; dev->umrc.pd = pd; sema_init(&dev->umrc.sem, MAX_UMR_WR); ret = mlx5_mr_cache_init(dev); if (ret) { mlx5_ib_warn(dev, "mr cache init failed %d\n", ret); goto error_4; } kfree(attr); kfree(init_attr); return 0; error_4: mlx5_ib_destroy_qp(qp); error_3: ib_free_cq(cq); error_2: ib_dealloc_pd(pd); error_0: kfree(attr); kfree(init_attr); return ret; } static u8 mlx5_get_umr_fence(u8 umr_fence_cap) { switch (umr_fence_cap) { case MLX5_CAP_UMR_FENCE_NONE: return MLX5_FENCE_MODE_NONE; case MLX5_CAP_UMR_FENCE_SMALL: return MLX5_FENCE_MODE_INITIATOR_SMALL; default: return MLX5_FENCE_MODE_STRONG_ORDERING; } } static int create_dev_resources(struct mlx5_ib_resources *devr) { struct ib_srq_init_attr attr; struct mlx5_ib_dev *dev; struct ib_cq_init_attr cq_attr = {.cqe = 1}; int port; int ret = 0; dev = container_of(devr, struct mlx5_ib_dev, devr); mutex_init(&devr->mutex); devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL); if (IS_ERR(devr->p0)) { ret = PTR_ERR(devr->p0); goto error0; } devr->p0->device = &dev->ib_dev; devr->p0->uobject = NULL; atomic_set(&devr->p0->usecnt, 0); devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, &cq_attr, NULL, NULL); if (IS_ERR(devr->c0)) { ret = PTR_ERR(devr->c0); goto error1; } devr->c0->device = &dev->ib_dev; devr->c0->uobject = NULL; devr->c0->comp_handler = NULL; devr->c0->event_handler = NULL; devr->c0->cq_context = NULL; atomic_set(&devr->c0->usecnt, 0); devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); if (IS_ERR(devr->x0)) { ret = PTR_ERR(devr->x0); goto error2; } devr->x0->device = &dev->ib_dev; devr->x0->inode = NULL; atomic_set(&devr->x0->usecnt, 0); mutex_init(&devr->x0->tgt_qp_mutex); INIT_LIST_HEAD(&devr->x0->tgt_qp_list); devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL); if (IS_ERR(devr->x1)) { ret = PTR_ERR(devr->x1); goto error3; } devr->x1->device = &dev->ib_dev; devr->x1->inode = NULL; atomic_set(&devr->x1->usecnt, 0); mutex_init(&devr->x1->tgt_qp_mutex); INIT_LIST_HEAD(&devr->x1->tgt_qp_list); memset(&attr, 0, sizeof(attr)); attr.attr.max_sge = 1; attr.attr.max_wr = 1; attr.srq_type = IB_SRQT_XRC; attr.ext.xrc.cq = devr->c0; attr.ext.xrc.xrcd = devr->x0; devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL); if (IS_ERR(devr->s0)) { ret = PTR_ERR(devr->s0); goto error4; } devr->s0->device = &dev->ib_dev; devr->s0->pd = devr->p0; devr->s0->uobject = NULL; devr->s0->event_handler = NULL; devr->s0->srq_context = NULL; devr->s0->srq_type = IB_SRQT_XRC; devr->s0->ext.xrc.xrcd = devr->x0; devr->s0->ext.xrc.cq = devr->c0; atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt); atomic_inc(&devr->s0->ext.xrc.cq->usecnt); atomic_inc(&devr->p0->usecnt); atomic_set(&devr->s0->usecnt, 0); memset(&attr, 0, sizeof(attr)); attr.attr.max_sge = 1; attr.attr.max_wr = 1; attr.srq_type = IB_SRQT_BASIC; devr->s1 = mlx5_ib_create_srq(devr->p0, &attr, NULL); if (IS_ERR(devr->s1)) { ret = PTR_ERR(devr->s1); goto error5; } devr->s1->device = &dev->ib_dev; devr->s1->pd = devr->p0; devr->s1->uobject = NULL; devr->s1->event_handler = NULL; devr->s1->srq_context = NULL; devr->s1->srq_type = IB_SRQT_BASIC; devr->s1->ext.xrc.cq = devr->c0; atomic_inc(&devr->p0->usecnt); atomic_set(&devr->s0->usecnt, 0); for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) { INIT_WORK(&devr->ports[port].pkey_change_work, pkey_change_handler); devr->ports[port].devr = devr; } return 0; error5: mlx5_ib_destroy_srq(devr->s0); error4: mlx5_ib_dealloc_xrcd(devr->x1); error3: mlx5_ib_dealloc_xrcd(devr->x0); error2: mlx5_ib_destroy_cq(devr->c0); error1: mlx5_ib_dealloc_pd(devr->p0); error0: return ret; } static void destroy_dev_resources(struct mlx5_ib_resources *devr) { struct mlx5_ib_dev *dev = container_of(devr, struct mlx5_ib_dev, devr); int port; mlx5_ib_destroy_srq(devr->s1); mlx5_ib_destroy_srq(devr->s0); mlx5_ib_dealloc_xrcd(devr->x0); mlx5_ib_dealloc_xrcd(devr->x1); mlx5_ib_destroy_cq(devr->c0); mlx5_ib_dealloc_pd(devr->p0); /* Make sure no change P_Key work items are still executing */ for (port = 0; port < dev->num_ports; ++port) cancel_work_sync(&devr->ports[port].pkey_change_work); } static u32 get_core_cap_flags(struct ib_device *ibdev) { struct mlx5_ib_dev *dev = to_mdev(ibdev); enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, 1); u8 l3_type_cap = MLX5_CAP_ROCE(dev->mdev, l3_type); u8 roce_version_cap = MLX5_CAP_ROCE(dev->mdev, roce_version); u32 ret = 0; if (ll == IB_LINK_LAYER_INFINIBAND) return RDMA_CORE_PORT_IBA_IB; ret = RDMA_CORE_PORT_RAW_PACKET; if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV4_CAP)) return ret; if (!(l3_type_cap & MLX5_ROCE_L3_TYPE_IPV6_CAP)) return ret; if (roce_version_cap & MLX5_ROCE_VERSION_1_CAP) ret |= RDMA_CORE_PORT_IBA_ROCE; if (roce_version_cap & MLX5_ROCE_VERSION_2_CAP) ret |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; return ret; } static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num, struct ib_port_immutable *immutable) { struct ib_port_attr attr; struct mlx5_ib_dev *dev = to_mdev(ibdev); enum rdma_link_layer ll = mlx5_ib_port_link_layer(ibdev, port_num); int err; immutable->core_cap_flags = get_core_cap_flags(ibdev); err = ib_query_port(ibdev, port_num, &attr); if (err) return err; immutable->pkey_tbl_len = attr.pkey_tbl_len; immutable->gid_tbl_len = attr.gid_tbl_len; immutable->core_cap_flags = get_core_cap_flags(ibdev); if ((ll == IB_LINK_LAYER_INFINIBAND) || MLX5_CAP_GEN(dev->mdev, roce)) immutable->max_mad_size = IB_MGMT_MAD_SIZE; return 0; } static void get_dev_fw_str(struct ib_device *ibdev, char *str, size_t str_len) { struct mlx5_ib_dev *dev = container_of(ibdev, struct mlx5_ib_dev, ib_dev); snprintf(str, str_len, "%d.%d.%04d", fw_rev_maj(dev->mdev), fw_rev_min(dev->mdev), fw_rev_sub(dev->mdev)); } static int mlx5_eth_lag_init(struct mlx5_ib_dev *dev) { struct mlx5_core_dev *mdev = dev->mdev; struct mlx5_flow_namespace *ns = mlx5_get_flow_namespace(mdev, MLX5_FLOW_NAMESPACE_LAG); struct mlx5_flow_table *ft; int err; if (!ns || !mlx5_lag_is_active(mdev)) return 0; err = mlx5_cmd_create_vport_lag(mdev); if (err) return err; ft = mlx5_create_lag_demux_flow_table(ns, 0, 0); if (IS_ERR(ft)) { err = PTR_ERR(ft); goto err_destroy_vport_lag; } dev->flow_db.lag_demux_ft = ft; return 0; err_destroy_vport_lag: mlx5_cmd_destroy_vport_lag(mdev); return err; } static void mlx5_eth_lag_cleanup(struct mlx5_ib_dev *dev) { struct mlx5_core_dev *mdev = dev->mdev; if (dev->flow_db.lag_demux_ft) { mlx5_destroy_flow_table(dev->flow_db.lag_demux_ft); dev->flow_db.lag_demux_ft = NULL; mlx5_cmd_destroy_vport_lag(mdev); } } static int mlx5_add_netdev_notifier(struct mlx5_ib_dev *dev) { int err; dev->roce.nb.notifier_call = mlx5_netdev_event; err = register_netdevice_notifier(&dev->roce.nb); if (err) { dev->roce.nb.notifier_call = NULL; return err; } return 0; } static void mlx5_remove_netdev_notifier(struct mlx5_ib_dev *dev) { if (dev->roce.nb.notifier_call) { unregister_netdevice_notifier(&dev->roce.nb); dev->roce.nb.notifier_call = NULL; } } static int mlx5_enable_eth(struct mlx5_ib_dev *dev) { int err; err = mlx5_add_netdev_notifier(dev); if (err) return err; if (MLX5_CAP_GEN(dev->mdev, roce)) { err = mlx5_nic_vport_enable_roce(dev->mdev); if (err) goto err_unregister_netdevice_notifier; } err = mlx5_eth_lag_init(dev); if (err) goto err_disable_roce; return 0; err_disable_roce: if (MLX5_CAP_GEN(dev->mdev, roce)) mlx5_nic_vport_disable_roce(dev->mdev); err_unregister_netdevice_notifier: mlx5_remove_netdev_notifier(dev); return err; } static void mlx5_disable_eth(struct mlx5_ib_dev *dev) { mlx5_eth_lag_cleanup(dev); if (MLX5_CAP_GEN(dev->mdev, roce)) mlx5_nic_vport_disable_roce(dev->mdev); } struct mlx5_ib_counter { const char *name; size_t offset; }; #define INIT_Q_COUNTER(_name) \ { .name = #_name, .offset = MLX5_BYTE_OFF(query_q_counter_out, _name)} static const struct mlx5_ib_counter basic_q_cnts[] = { INIT_Q_COUNTER(rx_write_requests), INIT_Q_COUNTER(rx_read_requests), INIT_Q_COUNTER(rx_atomic_requests), INIT_Q_COUNTER(out_of_buffer), }; static const struct mlx5_ib_counter out_of_seq_q_cnts[] = { INIT_Q_COUNTER(out_of_sequence), }; static const struct mlx5_ib_counter retrans_q_cnts[] = { INIT_Q_COUNTER(duplicate_request), INIT_Q_COUNTER(rnr_nak_retry_err), INIT_Q_COUNTER(packet_seq_err), INIT_Q_COUNTER(implied_nak_seq_err), INIT_Q_COUNTER(local_ack_timeout_err), }; #define INIT_CONG_COUNTER(_name) \ { .name = #_name, .offset = \ MLX5_BYTE_OFF(query_cong_statistics_out, _name ## _high)} static const struct mlx5_ib_counter cong_cnts[] = { INIT_CONG_COUNTER(rp_cnp_ignored), INIT_CONG_COUNTER(rp_cnp_handled), INIT_CONG_COUNTER(np_ecn_marked_roce_packets), INIT_CONG_COUNTER(np_cnp_sent), }; static void mlx5_ib_dealloc_counters(struct mlx5_ib_dev *dev) { unsigned int i; for (i = 0; i < dev->num_ports; i++) { mlx5_core_dealloc_q_counter(dev->mdev, dev->port[i].cnts.set_id); kfree(dev->port[i].cnts.names); kfree(dev->port[i].cnts.offsets); } } static int __mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev, struct mlx5_ib_counters *cnts) { u32 num_counters; num_counters = ARRAY_SIZE(basic_q_cnts); if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt)) num_counters += ARRAY_SIZE(out_of_seq_q_cnts); if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) num_counters += ARRAY_SIZE(retrans_q_cnts); cnts->num_q_counters = num_counters; if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) { cnts->num_cong_counters = ARRAY_SIZE(cong_cnts); num_counters += ARRAY_SIZE(cong_cnts); } cnts->names = kcalloc(num_counters, sizeof(cnts->names), GFP_KERNEL); if (!cnts->names) return -ENOMEM; cnts->offsets = kcalloc(num_counters, sizeof(cnts->offsets), GFP_KERNEL); if (!cnts->offsets) goto err_names; return 0; err_names: kfree(cnts->names); return -ENOMEM; } static void mlx5_ib_fill_counters(struct mlx5_ib_dev *dev, const char **names, size_t *offsets) { int i; int j = 0; for (i = 0; i < ARRAY_SIZE(basic_q_cnts); i++, j++) { names[j] = basic_q_cnts[i].name; offsets[j] = basic_q_cnts[i].offset; } if (MLX5_CAP_GEN(dev->mdev, out_of_seq_cnt)) { for (i = 0; i < ARRAY_SIZE(out_of_seq_q_cnts); i++, j++) { names[j] = out_of_seq_q_cnts[i].name; offsets[j] = out_of_seq_q_cnts[i].offset; } } if (MLX5_CAP_GEN(dev->mdev, retransmission_q_counters)) { for (i = 0; i < ARRAY_SIZE(retrans_q_cnts); i++, j++) { names[j] = retrans_q_cnts[i].name; offsets[j] = retrans_q_cnts[i].offset; } } if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) { for (i = 0; i < ARRAY_SIZE(cong_cnts); i++, j++) { names[j] = cong_cnts[i].name; offsets[j] = cong_cnts[i].offset; } } } static int mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev) { int i; int ret; for (i = 0; i < dev->num_ports; i++) { struct mlx5_ib_port *port = &dev->port[i]; ret = mlx5_core_alloc_q_counter(dev->mdev, &port->cnts.set_id); if (ret) { mlx5_ib_warn(dev, "couldn't allocate queue counter for port %d, err %d\n", i + 1, ret); goto dealloc_counters; } ret = __mlx5_ib_alloc_counters(dev, &port->cnts); if (ret) goto dealloc_counters; mlx5_ib_fill_counters(dev, port->cnts.names, port->cnts.offsets); } return 0; dealloc_counters: while (--i >= 0) mlx5_core_dealloc_q_counter(dev->mdev, dev->port[i].cnts.set_id); return ret; } static struct rdma_hw_stats *mlx5_ib_alloc_hw_stats(struct ib_device *ibdev, u8 port_num) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_ib_port *port = &dev->port[port_num - 1]; /* We support only per port stats */ if (port_num == 0) return NULL; return rdma_alloc_hw_stats_struct(port->cnts.names, port->cnts.num_q_counters + port->cnts.num_cong_counters, RDMA_HW_STATS_DEFAULT_LIFESPAN); } static int mlx5_ib_query_q_counters(struct mlx5_ib_dev *dev, struct mlx5_ib_port *port, struct rdma_hw_stats *stats) { int outlen = MLX5_ST_SZ_BYTES(query_q_counter_out); void *out; __be32 val; int ret, i; out = mlx5_vzalloc(outlen); if (!out) return -ENOMEM; ret = mlx5_core_query_q_counter(dev->mdev, port->cnts.set_id, 0, out, outlen); if (ret) goto free; for (i = 0; i < port->cnts.num_q_counters; i++) { val = *(__be32 *)(out + port->cnts.offsets[i]); stats->value[i] = (u64)be32_to_cpu(val); } free: kvfree(out); return ret; } static int mlx5_ib_query_cong_counters(struct mlx5_ib_dev *dev, struct mlx5_ib_port *port, struct rdma_hw_stats *stats) { int outlen = MLX5_ST_SZ_BYTES(query_cong_statistics_out); void *out; int ret, i; int offset = port->cnts.num_q_counters; out = mlx5_vzalloc(outlen); if (!out) return -ENOMEM; ret = mlx5_cmd_query_cong_counter(dev->mdev, false, out, outlen); if (ret) goto free; for (i = 0; i < port->cnts.num_cong_counters; i++) { stats->value[i + offset] = be64_to_cpup((__be64 *)(out + port->cnts.offsets[i + offset])); } free: kvfree(out); return ret; } static int mlx5_ib_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats, u8 port_num, int index) { struct mlx5_ib_dev *dev = to_mdev(ibdev); struct mlx5_ib_port *port = &dev->port[port_num - 1]; int ret, num_counters; if (!stats) return -EINVAL; ret = mlx5_ib_query_q_counters(dev, port, stats); if (ret) return ret; num_counters = port->cnts.num_q_counters; if (MLX5_CAP_GEN(dev->mdev, cc_query_allowed)) { ret = mlx5_ib_query_cong_counters(dev, port, stats); if (ret) return ret; num_counters += port->cnts.num_cong_counters; } return num_counters; } static struct net_device* mlx5_ib_alloc_rdma_netdev(struct ib_device *hca, u8 port_num, enum rdma_netdev_t type, const char *name, unsigned char name_assign_type, void (*setup)(struct net_device *)) { if (type != RDMA_NETDEV_IPOIB) return ERR_PTR(-EOPNOTSUPP); return mlx5_rdma_netdev_alloc(to_mdev(hca)->mdev, hca, name, setup); } static void mlx5_ib_free_rdma_netdev(struct net_device *netdev) { return mlx5_rdma_netdev_free(netdev); } static void *mlx5_ib_add(struct mlx5_core_dev *mdev) { struct mlx5_ib_dev *dev; enum rdma_link_layer ll; int port_type_cap; const char *name; int err; int i; port_type_cap = MLX5_CAP_GEN(mdev, port_type); ll = mlx5_port_type_cap_to_rdma_ll(port_type_cap); printk_once(KERN_INFO "%s", mlx5_version); dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev)); if (!dev) return NULL; dev->mdev = mdev; dev->port = kcalloc(MLX5_CAP_GEN(mdev, num_ports), sizeof(*dev->port), GFP_KERNEL); if (!dev->port) goto err_dealloc; rwlock_init(&dev->roce.netdev_lock); err = get_port_caps(dev); if (err) goto err_free_port; if (mlx5_use_mad_ifc(dev)) get_ext_port_caps(dev); if (!mlx5_lag_is_active(mdev)) name = "mlx5_%d"; else name = "mlx5_bond_%d"; strlcpy(dev->ib_dev.name, name, IB_DEVICE_NAME_MAX); dev->ib_dev.owner = THIS_MODULE; dev->ib_dev.node_type = RDMA_NODE_IB_CA; dev->ib_dev.local_dma_lkey = 0 /* not supported for now */; dev->num_ports = MLX5_CAP_GEN(mdev, num_ports); dev->ib_dev.phys_port_cnt = dev->num_ports; dev->ib_dev.num_comp_vectors = dev->mdev->priv.eq_table.num_comp_vectors; dev->ib_dev.dev.parent = &mdev->pdev->dev; dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION; dev->ib_dev.uverbs_cmd_mask = (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | (1ull << IB_USER_VERBS_CMD_CREATE_AH) | (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | (1ull << IB_USER_VERBS_CMD_REG_MR) | (1ull << IB_USER_VERBS_CMD_REREG_MR) | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | (1ull << IB_USER_VERBS_CMD_OPEN_QP); dev->ib_dev.uverbs_ex_cmd_mask = (1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) | (1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ) | (1ull << IB_USER_VERBS_EX_CMD_CREATE_QP) | (1ull << IB_USER_VERBS_EX_CMD_MODIFY_QP); dev->ib_dev.query_device = mlx5_ib_query_device; dev->ib_dev.query_port = mlx5_ib_query_port; dev->ib_dev.get_link_layer = mlx5_ib_port_link_layer; if (ll == IB_LINK_LAYER_ETHERNET) dev->ib_dev.get_netdev = mlx5_ib_get_netdev; dev->ib_dev.query_gid = mlx5_ib_query_gid; dev->ib_dev.add_gid = mlx5_ib_add_gid; dev->ib_dev.del_gid = mlx5_ib_del_gid; dev->ib_dev.query_pkey = mlx5_ib_query_pkey; dev->ib_dev.modify_device = mlx5_ib_modify_device; dev->ib_dev.modify_port = mlx5_ib_modify_port; dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext; dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext; dev->ib_dev.mmap = mlx5_ib_mmap; dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd; dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd; dev->ib_dev.create_ah = mlx5_ib_create_ah; dev->ib_dev.query_ah = mlx5_ib_query_ah; dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah; dev->ib_dev.create_srq = mlx5_ib_create_srq; dev->ib_dev.modify_srq = mlx5_ib_modify_srq; dev->ib_dev.query_srq = mlx5_ib_query_srq; dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq; dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv; dev->ib_dev.create_qp = mlx5_ib_create_qp; dev->ib_dev.modify_qp = mlx5_ib_modify_qp; dev->ib_dev.query_qp = mlx5_ib_query_qp; dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp; dev->ib_dev.post_send = mlx5_ib_post_send; dev->ib_dev.post_recv = mlx5_ib_post_recv; dev->ib_dev.create_cq = mlx5_ib_create_cq; dev->ib_dev.modify_cq = mlx5_ib_modify_cq; dev->ib_dev.resize_cq = mlx5_ib_resize_cq; dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq; dev->ib_dev.poll_cq = mlx5_ib_poll_cq; dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq; dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr; dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr; dev->ib_dev.rereg_user_mr = mlx5_ib_rereg_user_mr; dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr; dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach; dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach; dev->ib_dev.process_mad = mlx5_ib_process_mad; dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr; dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg; dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status; dev->ib_dev.get_port_immutable = mlx5_port_immutable; dev->ib_dev.get_dev_fw_str = get_dev_fw_str; dev->ib_dev.alloc_rdma_netdev = mlx5_ib_alloc_rdma_netdev; dev->ib_dev.free_rdma_netdev = mlx5_ib_free_rdma_netdev; if (mlx5_core_is_pf(mdev)) { dev->ib_dev.get_vf_config = mlx5_ib_get_vf_config; dev->ib_dev.set_vf_link_state = mlx5_ib_set_vf_link_state; dev->ib_dev.get_vf_stats = mlx5_ib_get_vf_stats; dev->ib_dev.set_vf_guid = mlx5_ib_set_vf_guid; } dev->ib_dev.disassociate_ucontext = mlx5_ib_disassociate_ucontext; mlx5_ib_internal_fill_odp_caps(dev); dev->umr_fence = mlx5_get_umr_fence(MLX5_CAP_GEN(mdev, umr_fence)); if (MLX5_CAP_GEN(mdev, imaicl)) { dev->ib_dev.alloc_mw = mlx5_ib_alloc_mw; dev->ib_dev.dealloc_mw = mlx5_ib_dealloc_mw; dev->ib_dev.uverbs_cmd_mask |= (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); } if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) { dev->ib_dev.get_hw_stats = mlx5_ib_get_hw_stats; dev->ib_dev.alloc_hw_stats = mlx5_ib_alloc_hw_stats; } if (MLX5_CAP_GEN(mdev, xrc)) { dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd; dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd; dev->ib_dev.uverbs_cmd_mask |= (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); } if (mlx5_ib_port_link_layer(&dev->ib_dev, 1) == IB_LINK_LAYER_ETHERNET) { dev->ib_dev.create_flow = mlx5_ib_create_flow; dev->ib_dev.destroy_flow = mlx5_ib_destroy_flow; dev->ib_dev.create_wq = mlx5_ib_create_wq; dev->ib_dev.modify_wq = mlx5_ib_modify_wq; dev->ib_dev.destroy_wq = mlx5_ib_destroy_wq; dev->ib_dev.create_rwq_ind_table = mlx5_ib_create_rwq_ind_table; dev->ib_dev.destroy_rwq_ind_table = mlx5_ib_destroy_rwq_ind_table; dev->ib_dev.uverbs_ex_cmd_mask |= (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW) | (1ull << IB_USER_VERBS_EX_CMD_CREATE_WQ) | (1ull << IB_USER_VERBS_EX_CMD_MODIFY_WQ) | (1ull << IB_USER_VERBS_EX_CMD_DESTROY_WQ) | (1ull << IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL) | (1ull << IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL); } err = init_node_data(dev); if (err) goto err_free_port; mutex_init(&dev->flow_db.lock); mutex_init(&dev->cap_mask_mutex); INIT_LIST_HEAD(&dev->qp_list); spin_lock_init(&dev->reset_flow_resource_lock); if (ll == IB_LINK_LAYER_ETHERNET) { err = mlx5_enable_eth(dev); if (err) goto err_free_port; } err = create_dev_resources(&dev->devr); if (err) goto err_disable_eth; err = mlx5_ib_odp_init_one(dev); if (err) goto err_rsrc; if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) { err = mlx5_ib_alloc_counters(dev); if (err) goto err_odp; } dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev); if (!dev->mdev->priv.uar) goto err_cnt; err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false); if (err) goto err_uar_page; err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true); if (err) goto err_bfreg; err = ib_register_device(&dev->ib_dev, NULL); if (err) goto err_fp_bfreg; err = create_umr_res(dev); if (err) goto err_dev; for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) { err = device_create_file(&dev->ib_dev.dev, mlx5_class_attributes[i]); if (err) goto err_umrc; } dev->ib_active = true; return dev; err_umrc: destroy_umrc_res(dev); err_dev: ib_unregister_device(&dev->ib_dev); err_fp_bfreg: mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg); err_bfreg: mlx5_free_bfreg(dev->mdev, &dev->bfreg); err_uar_page: mlx5_put_uars_page(dev->mdev, dev->mdev->priv.uar); err_cnt: if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) mlx5_ib_dealloc_counters(dev); err_odp: mlx5_ib_odp_remove_one(dev); err_rsrc: destroy_dev_resources(&dev->devr); err_disable_eth: if (ll == IB_LINK_LAYER_ETHERNET) { mlx5_disable_eth(dev); mlx5_remove_netdev_notifier(dev); } err_free_port: kfree(dev->port); err_dealloc: ib_dealloc_device((struct ib_device *)dev); return NULL; } static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context) { struct mlx5_ib_dev *dev = context; enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 1); mlx5_remove_netdev_notifier(dev); ib_unregister_device(&dev->ib_dev); mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg); mlx5_free_bfreg(dev->mdev, &dev->bfreg); mlx5_put_uars_page(dev->mdev, mdev->priv.uar); if (MLX5_CAP_GEN(dev->mdev, max_qp_cnt)) mlx5_ib_dealloc_counters(dev); destroy_umrc_res(dev); mlx5_ib_odp_remove_one(dev); destroy_dev_resources(&dev->devr); if (ll == IB_LINK_LAYER_ETHERNET) mlx5_disable_eth(dev); kfree(dev->port); ib_dealloc_device(&dev->ib_dev); } static struct mlx5_interface mlx5_ib_interface = { .add = mlx5_ib_add, .remove = mlx5_ib_remove, .event = mlx5_ib_event, #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING .pfault = mlx5_ib_pfault, #endif .protocol = MLX5_INTERFACE_PROTOCOL_IB, }; static int __init mlx5_ib_init(void) { int err; mlx5_ib_odp_init(); err = mlx5_register_interface(&mlx5_ib_interface); return err; } static void __exit mlx5_ib_cleanup(void) { mlx5_unregister_interface(&mlx5_ib_interface); } module_init(mlx5_ib_init); module_exit(mlx5_ib_cleanup);