/* * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. * Copyright (c) 2007, 2008 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 #include #include #include #include #include #include #include #include #include #include "mlx4_ib.h" #include "user.h" #define DRV_NAME MLX4_IB_DRV_NAME #define DRV_VERSION "2.2-1" #define DRV_RELDATE "Feb 2014" #define MLX4_IB_FLOW_MAX_PRIO 0xFFF #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF #define MLX4_IB_CARD_REV_A0 0xA0 MODULE_AUTHOR("Roland Dreier"); MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(DRV_VERSION); int mlx4_ib_sm_guid_assign = 0; module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 0)"); static const char mlx4_ib_version[] = DRV_NAME ": Mellanox ConnectX InfiniBand driver v" DRV_VERSION " (" DRV_RELDATE ")\n"; struct update_gid_work { struct work_struct work; union ib_gid gids[128]; struct mlx4_ib_dev *dev; int port; }; static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); static struct workqueue_struct *wq; static void init_query_mad(struct ib_smp *mad) { mad->base_version = 1; mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; mad->class_version = 1; mad->method = IB_MGMT_METHOD_GET; } static union ib_gid zgid; static int check_flow_steering_support(struct mlx4_dev *dev) { int eth_num_ports = 0; int ib_num_ports = 0; int dmfs = dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED; if (dmfs) { int i; mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) eth_num_ports++; mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) ib_num_ports++; dmfs &= (!ib_num_ports || (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB)) && (!eth_num_ports || (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)); if (ib_num_ports && mlx4_is_mfunc(dev)) { pr_warn("Device managed flow steering is unavailable for IB port in multifunction env.\n"); dmfs = 0; } } return dmfs; } static int num_ib_ports(struct mlx4_dev *dev) { int ib_ports = 0; int i; mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) ib_ports++; return ib_ports; } static int mlx4_ib_query_device(struct ib_device *ibdev, struct ib_device_attr *props) { struct mlx4_ib_dev *dev = to_mdev(ibdev); struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int err = -ENOMEM; int have_ib_ports; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 1, NULL, NULL, in_mad, out_mad); if (err) goto out; memset(props, 0, sizeof *props); have_ib_ports = num_ib_ports(dev->dev); props->fw_ver = dev->dev->caps.fw_ver; 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 | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM && have_ib_ports) props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; if (dev->dev->caps.max_gso_sz && (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) && (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)) props->device_cap_flags |= IB_DEVICE_UD_TSO; if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) props->device_cap_flags |= IB_DEVICE_XRC; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW) props->device_cap_flags |= IB_DEVICE_MEM_WINDOW; if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B) props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B; else props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A; if (dev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED) props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING; } props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 0xffffff; props->vendor_part_id = dev->dev->persist->pdev->device; props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); memcpy(&props->sys_image_guid, out_mad->data + 4, 8); props->max_mr_size = ~0ull; props->page_size_cap = dev->dev->caps.page_size_cap; props->max_qp = dev->dev->quotas.qp; props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; props->max_sge = min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg); props->max_cq = dev->dev->quotas.cq; props->max_cqe = dev->dev->caps.max_cqes; props->max_mr = dev->dev->quotas.mpt; props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; props->max_srq = dev->dev->quotas.srq; props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; props->max_srq_sge = dev->dev->caps.max_srq_sge; props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? IB_ATOMIC_HCA : IB_ATOMIC_NONE; props->masked_atomic_cap = props->atomic_cap; props->max_pkeys = dev->dev->caps.pkey_table_len[1]; props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * props->max_mcast_grp; props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; out: kfree(in_mad); kfree(out_mad); return err; } static enum rdma_link_layer mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) { struct mlx4_dev *dev = to_mdev(device)->dev; return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; } static int ib_link_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props, int netw_view) { struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int ext_active_speed; int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; int err = -ENOMEM; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; in_mad->attr_mod = cpu_to_be32(port); if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); if (err) goto out; props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); props->lmc = out_mad->data[34] & 0x7; props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); props->sm_sl = out_mad->data[36] & 0xf; props->state = out_mad->data[32] & 0xf; props->phys_state = out_mad->data[33] >> 4; props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); if (netw_view) props->gid_tbl_len = out_mad->data[50]; else props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); props->active_width = out_mad->data[31] & 0xf; props->active_speed = out_mad->data[35] >> 4; props->max_mtu = out_mad->data[41] & 0xf; props->active_mtu = out_mad->data[36] >> 4; props->subnet_timeout = out_mad->data[51] & 0x1f; props->max_vl_num = out_mad->data[37] >> 4; props->init_type_reply = out_mad->data[41] >> 4; /* Check if extended speeds (EDR/FDR/...) are supported */ if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { ext_active_speed = out_mad->data[62] >> 4; switch (ext_active_speed) { case 1: props->active_speed = IB_SPEED_FDR; break; case 2: props->active_speed = IB_SPEED_EDR; break; } } /* If reported active speed is QDR, check if is FDR-10 */ if (props->active_speed == IB_SPEED_QDR) { init_query_mad(in_mad); in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; in_mad->attr_mod = cpu_to_be32(port); err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); if (err) goto out; /* Checking LinkSpeedActive for FDR-10 */ if (out_mad->data[15] & 0x1) props->active_speed = IB_SPEED_FDR10; } /* Avoid wrong speed value returned by FW if the IB link is down. */ if (props->state == IB_PORT_DOWN) props->active_speed = IB_SPEED_SDR; out: kfree(in_mad); kfree(out_mad); return err; } static u8 state_to_phys_state(enum ib_port_state state) { return state == IB_PORT_ACTIVE ? 5 : 3; } static int eth_link_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props, int netw_view) { struct mlx4_ib_dev *mdev = to_mdev(ibdev); struct mlx4_ib_iboe *iboe = &mdev->iboe; struct net_device *ndev; enum ib_mtu tmp; struct mlx4_cmd_mailbox *mailbox; int err = 0; int is_bonded = mlx4_is_bonded(mdev->dev); mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); if (IS_ERR(mailbox)) return PTR_ERR(mailbox); err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); if (err) goto out; props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? IB_WIDTH_4X : IB_WIDTH_1X; props->active_speed = IB_SPEED_QDR; props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_IP_BASED_GIDS; props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; props->max_msg_sz = mdev->dev->caps.max_msg_sz; props->pkey_tbl_len = 1; props->max_mtu = IB_MTU_4096; props->max_vl_num = 2; props->state = IB_PORT_DOWN; props->phys_state = state_to_phys_state(props->state); props->active_mtu = IB_MTU_256; if (is_bonded) rtnl_lock(); /* required to get upper dev */ spin_lock_bh(&iboe->lock); ndev = iboe->netdevs[port - 1]; if (ndev && is_bonded) ndev = netdev_master_upper_dev_get(ndev); if (!ndev) goto out_unlock; tmp = iboe_get_mtu(ndev->mtu); props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? IB_PORT_ACTIVE : IB_PORT_DOWN; props->phys_state = state_to_phys_state(props->state); out_unlock: spin_unlock_bh(&iboe->lock); if (is_bonded) rtnl_unlock(); out: mlx4_free_cmd_mailbox(mdev->dev, mailbox); return err; } int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props, int netw_view) { int err; memset(props, 0, sizeof *props); err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? ib_link_query_port(ibdev, port, props, netw_view) : eth_link_query_port(ibdev, port, props, netw_view); return err; } static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) { /* returns host view */ return __mlx4_ib_query_port(ibdev, port, props, 0); } int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid, int netw_view) { struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int err = -ENOMEM; struct mlx4_ib_dev *dev = to_mdev(ibdev); int clear = 0; int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; in_mad->attr_mod = cpu_to_be32(port); if (mlx4_is_mfunc(dev->dev) && netw_view) mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); if (err) goto out; memcpy(gid->raw, out_mad->data + 8, 8); if (mlx4_is_mfunc(dev->dev) && !netw_view) { if (index) { /* For any index > 0, return the null guid */ err = 0; clear = 1; goto out; } } init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; in_mad->attr_mod = cpu_to_be32(index / 8); err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); if (err) goto out; memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); out: if (clear) memset(gid->raw + 8, 0, 8); kfree(in_mad); kfree(out_mad); return err; } static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { struct mlx4_ib_dev *dev = to_mdev(ibdev); *gid = dev->iboe.gid_table[port - 1][index]; return 0; } static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) { if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); else return iboe_query_gid(ibdev, port, index, gid); } int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey, int netw_view) { struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; int err = -ENOMEM; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; in_mad->attr_mod = cpu_to_be32(index / 32); if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); if (err) goto out; *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); out: kfree(in_mad); kfree(out_mad); return err; } static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) { return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); } static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, struct ib_device_modify *props) { struct mlx4_cmd_mailbox *mailbox; unsigned long flags; if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) return -EOPNOTSUPP; if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) return 0; if (mlx4_is_slave(to_mdev(ibdev)->dev)) return -EOPNOTSUPP; spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); memcpy(ibdev->node_desc, props->node_desc, 64); spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); /* * If possible, pass node desc to FW, so it can generate * a 144 trap. If cmd fails, just ignore. */ mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); if (IS_ERR(mailbox)) return 0; memcpy(mailbox->buf, props->node_desc, 64); mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); return 0; } static int mlx4_ib_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, u32 cap_mask) { struct mlx4_cmd_mailbox *mailbox; int err; mailbox = mlx4_alloc_cmd_mailbox(dev->dev); if (IS_ERR(mailbox)) return PTR_ERR(mailbox); if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); } else { ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); } err = mlx4_cmd(dev->dev, mailbox->dma, port, MLX4_SET_PORT_IB_OPCODE, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); mlx4_free_cmd_mailbox(dev->dev, mailbox); return err; } static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, struct ib_port_modify *props) { struct mlx4_ib_dev *mdev = to_mdev(ibdev); u8 is_eth = mdev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; struct ib_port_attr attr; u32 cap_mask; int err; /* return OK if this is RoCE. CM calls ib_modify_port() regardless * of whether port link layer is ETH or IB. For ETH ports, qkey * violations and port capabilities are not meaningful. */ if (is_eth) return 0; mutex_lock(&mdev->cap_mask_mutex); err = mlx4_ib_query_port(ibdev, port, &attr); if (err) goto out; cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & ~props->clr_port_cap_mask; err = mlx4_ib_SET_PORT(mdev, port, !!(mask & IB_PORT_RESET_QKEY_CNTR), cap_mask); out: mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); return err; } static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, struct ib_udata *udata) { struct mlx4_ib_dev *dev = to_mdev(ibdev); struct mlx4_ib_ucontext *context; struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3; struct mlx4_ib_alloc_ucontext_resp resp; int err; if (!dev->ib_active) return ERR_PTR(-EAGAIN); if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) { resp_v3.qp_tab_size = dev->dev->caps.num_qps; resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size; resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; } else { resp.dev_caps = dev->dev->caps.userspace_caps; resp.qp_tab_size = dev->dev->caps.num_qps; resp.bf_reg_size = dev->dev->caps.bf_reg_size; resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; resp.cqe_size = dev->dev->caps.cqe_size; } context = kmalloc(sizeof *context, GFP_KERNEL); if (!context) return ERR_PTR(-ENOMEM); err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); if (err) { kfree(context); return ERR_PTR(err); } INIT_LIST_HEAD(&context->db_page_list); mutex_init(&context->db_page_mutex); if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3)); else err = ib_copy_to_udata(udata, &resp, sizeof(resp)); if (err) { mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); kfree(context); return ERR_PTR(-EFAULT); } return &context->ibucontext; } static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) { struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); kfree(context); return 0; } static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) { struct mlx4_ib_dev *dev = to_mdev(context->device); if (vma->vm_end - vma->vm_start != PAGE_SIZE) return -EINVAL; if (vma->vm_pgoff == 0) { vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); if (io_remap_pfn_range(vma, vma->vm_start, to_mucontext(context)->uar.pfn, PAGE_SIZE, vma->vm_page_prot)) return -EAGAIN; } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); if (io_remap_pfn_range(vma, vma->vm_start, to_mucontext(context)->uar.pfn + dev->dev->caps.num_uars, PAGE_SIZE, vma->vm_page_prot)) return -EAGAIN; } else return -EINVAL; return 0; } static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_udata *udata) { struct mlx4_ib_pd *pd; int err; pd = kmalloc(sizeof *pd, GFP_KERNEL); if (!pd) return ERR_PTR(-ENOMEM); err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); if (err) { kfree(pd); return ERR_PTR(err); } if (context) if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); kfree(pd); return ERR_PTR(-EFAULT); } return &pd->ibpd; } static int mlx4_ib_dealloc_pd(struct ib_pd *pd) { mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); kfree(pd); return 0; } static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, struct ib_ucontext *context, struct ib_udata *udata) { struct mlx4_ib_xrcd *xrcd; int err; if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) return ERR_PTR(-ENOSYS); xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); if (!xrcd) return ERR_PTR(-ENOMEM); err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); if (err) goto err1; xrcd->pd = ib_alloc_pd(ibdev); if (IS_ERR(xrcd->pd)) { err = PTR_ERR(xrcd->pd); goto err2; } xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); if (IS_ERR(xrcd->cq)) { err = PTR_ERR(xrcd->cq); goto err3; } return &xrcd->ibxrcd; err3: ib_dealloc_pd(xrcd->pd); err2: mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); err1: kfree(xrcd); return ERR_PTR(err); } static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) { ib_destroy_cq(to_mxrcd(xrcd)->cq); ib_dealloc_pd(to_mxrcd(xrcd)->pd); mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); kfree(xrcd); return 0; } static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) { struct mlx4_ib_qp *mqp = to_mqp(ibqp); struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); struct mlx4_ib_gid_entry *ge; ge = kzalloc(sizeof *ge, GFP_KERNEL); if (!ge) return -ENOMEM; ge->gid = *gid; if (mlx4_ib_add_mc(mdev, mqp, gid)) { ge->port = mqp->port; ge->added = 1; } mutex_lock(&mqp->mutex); list_add_tail(&ge->list, &mqp->gid_list); mutex_unlock(&mqp->mutex); return 0; } int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, union ib_gid *gid) { struct net_device *ndev; int ret = 0; if (!mqp->port) return 0; spin_lock_bh(&mdev->iboe.lock); ndev = mdev->iboe.netdevs[mqp->port - 1]; if (ndev) dev_hold(ndev); spin_unlock_bh(&mdev->iboe.lock); if (ndev) { ret = 1; dev_put(ndev); } return ret; } struct mlx4_ib_steering { struct list_head list; struct mlx4_flow_reg_id reg_id; union ib_gid gid; }; static int parse_flow_attr(struct mlx4_dev *dev, u32 qp_num, union ib_flow_spec *ib_spec, struct _rule_hw *mlx4_spec) { enum mlx4_net_trans_rule_id type; switch (ib_spec->type) { case IB_FLOW_SPEC_ETH: type = MLX4_NET_TRANS_RULE_ID_ETH; memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, ETH_ALEN); memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac, ETH_ALEN); mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag; mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; break; case IB_FLOW_SPEC_IB: type = MLX4_NET_TRANS_RULE_ID_IB; mlx4_spec->ib.l3_qpn = cpu_to_be32(qp_num); mlx4_spec->ib.qpn_mask = cpu_to_be32(MLX4_IB_FLOW_QPN_MASK); break; case IB_FLOW_SPEC_IPV4: type = MLX4_NET_TRANS_RULE_ID_IPV4; mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip; mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip; break; case IB_FLOW_SPEC_TCP: case IB_FLOW_SPEC_UDP: type = ib_spec->type == IB_FLOW_SPEC_TCP ? MLX4_NET_TRANS_RULE_ID_TCP : MLX4_NET_TRANS_RULE_ID_UDP; mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port; mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port; mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port; mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port; break; default: return -EINVAL; } if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 || mlx4_hw_rule_sz(dev, type) < 0) return -EINVAL; mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type)); mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2; return mlx4_hw_rule_sz(dev, type); } struct default_rules { __u32 mandatory_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; __u32 mandatory_not_fields[IB_FLOW_SPEC_SUPPORT_LAYERS]; __u32 rules_create_list[IB_FLOW_SPEC_SUPPORT_LAYERS]; __u8 link_layer; }; static const struct default_rules default_table[] = { { .mandatory_fields = {IB_FLOW_SPEC_IPV4}, .mandatory_not_fields = {IB_FLOW_SPEC_ETH}, .rules_create_list = {IB_FLOW_SPEC_IB}, .link_layer = IB_LINK_LAYER_INFINIBAND } }; static int __mlx4_ib_default_rules_match(struct ib_qp *qp, struct ib_flow_attr *flow_attr) { int i, j, k; void *ib_flow; const struct default_rules *pdefault_rules = default_table; u8 link_layer = rdma_port_get_link_layer(qp->device, flow_attr->port); for (i = 0; i < ARRAY_SIZE(default_table); i++, pdefault_rules++) { __u32 field_types[IB_FLOW_SPEC_SUPPORT_LAYERS]; memset(&field_types, 0, sizeof(field_types)); if (link_layer != pdefault_rules->link_layer) continue; ib_flow = flow_attr + 1; /* we assume the specs are sorted */ for (j = 0, k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS && j < flow_attr->num_of_specs; k++) { union ib_flow_spec *current_flow = (union ib_flow_spec *)ib_flow; /* same layer but different type */ if (((current_flow->type & IB_FLOW_SPEC_LAYER_MASK) == (pdefault_rules->mandatory_fields[k] & IB_FLOW_SPEC_LAYER_MASK)) && (current_flow->type != pdefault_rules->mandatory_fields[k])) goto out; /* same layer, try match next one */ if (current_flow->type == pdefault_rules->mandatory_fields[k]) { j++; ib_flow += ((union ib_flow_spec *)ib_flow)->size; } } ib_flow = flow_attr + 1; for (j = 0; j < flow_attr->num_of_specs; j++, ib_flow += ((union ib_flow_spec *)ib_flow)->size) for (k = 0; k < IB_FLOW_SPEC_SUPPORT_LAYERS; k++) /* same layer and same type */ if (((union ib_flow_spec *)ib_flow)->type == pdefault_rules->mandatory_not_fields[k]) goto out; return i; } out: return -1; } static int __mlx4_ib_create_default_rules( struct mlx4_ib_dev *mdev, struct ib_qp *qp, const struct default_rules *pdefault_rules, struct _rule_hw *mlx4_spec) { int size = 0; int i; for (i = 0; i < ARRAY_SIZE(pdefault_rules->rules_create_list); i++) { int ret; union ib_flow_spec ib_spec; switch (pdefault_rules->rules_create_list[i]) { case 0: /* no rule */ continue; case IB_FLOW_SPEC_IB: ib_spec.type = IB_FLOW_SPEC_IB; ib_spec.size = sizeof(struct ib_flow_spec_ib); break; default: /* invalid rule */ return -EINVAL; } /* We must put empty rule, qpn is being ignored */ ret = parse_flow_attr(mdev->dev, 0, &ib_spec, mlx4_spec); if (ret < 0) { pr_info("invalid parsing\n"); return -EINVAL; } mlx4_spec = (void *)mlx4_spec + ret; size += ret; } return size; } static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, int domain, enum mlx4_net_trans_promisc_mode flow_type, u64 *reg_id) { int ret, i; int size = 0; void *ib_flow; struct mlx4_ib_dev *mdev = to_mdev(qp->device); struct mlx4_cmd_mailbox *mailbox; struct mlx4_net_trans_rule_hw_ctrl *ctrl; int default_flow; static const u16 __mlx4_domain[] = { [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS, [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL, [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS, [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC, }; if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) { pr_err("Invalid priority value %d\n", flow_attr->priority); return -EINVAL; } if (domain >= IB_FLOW_DOMAIN_NUM) { pr_err("Invalid domain value %d\n", domain); return -EINVAL; } if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0) return -EINVAL; mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); if (IS_ERR(mailbox)) return PTR_ERR(mailbox); ctrl = mailbox->buf; ctrl->prio = cpu_to_be16(__mlx4_domain[domain] | flow_attr->priority); ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type); ctrl->port = flow_attr->port; ctrl->qpn = cpu_to_be32(qp->qp_num); ib_flow = flow_attr + 1; size += sizeof(struct mlx4_net_trans_rule_hw_ctrl); /* Add default flows */ default_flow = __mlx4_ib_default_rules_match(qp, flow_attr); if (default_flow >= 0) { ret = __mlx4_ib_create_default_rules( mdev, qp, default_table + default_flow, mailbox->buf + size); if (ret < 0) { mlx4_free_cmd_mailbox(mdev->dev, mailbox); return -EINVAL; } size += ret; } for (i = 0; i < flow_attr->num_of_specs; i++) { ret = parse_flow_attr(mdev->dev, qp->qp_num, ib_flow, mailbox->buf + size); if (ret < 0) { mlx4_free_cmd_mailbox(mdev->dev, mailbox); return -EINVAL; } ib_flow += ((union ib_flow_spec *) ib_flow)->size; size += ret; } ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0, MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); if (ret == -ENOMEM) pr_err("mcg table is full. Fail to register network rule.\n"); else if (ret == -ENXIO) pr_err("Device managed flow steering is disabled. Fail to register network rule.\n"); else if (ret) pr_err("Invalid argumant. Fail to register network rule.\n"); mlx4_free_cmd_mailbox(mdev->dev, mailbox); return ret; } static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id) { int err; err = mlx4_cmd(dev, reg_id, 0, 0, MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); if (err) pr_err("Fail to detach network rule. registration id = 0x%llx\n", reg_id); return err; } static int mlx4_ib_tunnel_steer_add(struct ib_qp *qp, struct ib_flow_attr *flow_attr, u64 *reg_id) { void *ib_flow; union ib_flow_spec *ib_spec; struct mlx4_dev *dev = to_mdev(qp->device)->dev; int err = 0; if (dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) return 0; /* do nothing */ ib_flow = flow_attr + 1; ib_spec = (union ib_flow_spec *)ib_flow; if (ib_spec->type != IB_FLOW_SPEC_ETH || flow_attr->num_of_specs != 1) return 0; /* do nothing */ err = mlx4_tunnel_steer_add(to_mdev(qp->device)->dev, ib_spec->eth.val.dst_mac, flow_attr->port, qp->qp_num, MLX4_DOMAIN_UVERBS | (flow_attr->priority & 0xff), reg_id); return err; } static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, int domain) { int err = 0, i = 0, j = 0; struct mlx4_ib_flow *mflow; enum mlx4_net_trans_promisc_mode type[2]; struct mlx4_dev *dev = (to_mdev(qp->device))->dev; int is_bonded = mlx4_is_bonded(dev); memset(type, 0, sizeof(type)); mflow = kzalloc(sizeof(*mflow), GFP_KERNEL); if (!mflow) { err = -ENOMEM; goto err_free; } switch (flow_attr->type) { case IB_FLOW_ATTR_NORMAL: type[0] = MLX4_FS_REGULAR; break; case IB_FLOW_ATTR_ALL_DEFAULT: type[0] = MLX4_FS_ALL_DEFAULT; break; case IB_FLOW_ATTR_MC_DEFAULT: type[0] = MLX4_FS_MC_DEFAULT; break; case IB_FLOW_ATTR_SNIFFER: type[0] = MLX4_FS_UC_SNIFFER; type[1] = MLX4_FS_MC_SNIFFER; break; default: err = -EINVAL; goto err_free; } while (i < ARRAY_SIZE(type) && type[i]) { err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i], &mflow->reg_id[i].id); if (err) goto err_create_flow; i++; if (is_bonded) { /* Application always sees one port so the mirror rule * must be on port #2 */ flow_attr->port = 2; err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[j], &mflow->reg_id[j].mirror); flow_attr->port = 1; if (err) goto err_create_flow; j++; } } if (i < ARRAY_SIZE(type) && flow_attr->type == IB_FLOW_ATTR_NORMAL) { err = mlx4_ib_tunnel_steer_add(qp, flow_attr, &mflow->reg_id[i].id); if (err) goto err_create_flow; i++; if (is_bonded) { flow_attr->port = 2; err = mlx4_ib_tunnel_steer_add(qp, flow_attr, &mflow->reg_id[j].mirror); flow_attr->port = 1; if (err) goto err_create_flow; j++; } /* function to create mirror rule */ } return &mflow->ibflow; err_create_flow: while (i) { (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, mflow->reg_id[i].id); i--; } while (j) { (void)__mlx4_ib_destroy_flow(to_mdev(qp->device)->dev, mflow->reg_id[j].mirror); j--; } err_free: kfree(mflow); return ERR_PTR(err); } static int mlx4_ib_destroy_flow(struct ib_flow *flow_id) { int err, ret = 0; int i = 0; struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device); struct mlx4_ib_flow *mflow = to_mflow(flow_id); while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i].id) { err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].id); if (err) ret = err; if (mflow->reg_id[i].mirror) { err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i].mirror); if (err) ret = err; } i++; } kfree(mflow); return ret; } static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { int err; struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); struct mlx4_dev *dev = mdev->dev; struct mlx4_ib_qp *mqp = to_mqp(ibqp); struct mlx4_ib_steering *ib_steering = NULL; enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; struct mlx4_flow_reg_id reg_id; if (mdev->dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) { ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); if (!ib_steering) return -ENOMEM; } err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), prot, ®_id.id); if (err) { pr_err("multicast attach op failed, err %d\n", err); goto err_malloc; } reg_id.mirror = 0; if (mlx4_is_bonded(dev)) { err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, (mqp->port == 1) ? 2 : 1, !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), prot, ®_id.mirror); if (err) goto err_add; } err = add_gid_entry(ibqp, gid); if (err) goto err_add; if (ib_steering) { memcpy(ib_steering->gid.raw, gid->raw, 16); ib_steering->reg_id = reg_id; mutex_lock(&mqp->mutex); list_add(&ib_steering->list, &mqp->steering_rules); mutex_unlock(&mqp->mutex); } return 0; err_add: mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, prot, reg_id.id); if (reg_id.mirror) mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, prot, reg_id.mirror); err_malloc: kfree(ib_steering); return err; } static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) { struct mlx4_ib_gid_entry *ge; struct mlx4_ib_gid_entry *tmp; struct mlx4_ib_gid_entry *ret = NULL; list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { if (!memcmp(raw, ge->gid.raw, 16)) { ret = ge; break; } } return ret; } static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) { int err; struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); struct mlx4_dev *dev = mdev->dev; struct mlx4_ib_qp *mqp = to_mqp(ibqp); struct net_device *ndev; struct mlx4_ib_gid_entry *ge; struct mlx4_flow_reg_id reg_id = {0, 0}; enum mlx4_protocol prot = MLX4_PROT_IB_IPV6; if (mdev->dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) { struct mlx4_ib_steering *ib_steering; mutex_lock(&mqp->mutex); list_for_each_entry(ib_steering, &mqp->steering_rules, list) { if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { list_del(&ib_steering->list); break; } } mutex_unlock(&mqp->mutex); if (&ib_steering->list == &mqp->steering_rules) { pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); return -EINVAL; } reg_id = ib_steering->reg_id; kfree(ib_steering); } err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, prot, reg_id.id); if (err) return err; if (mlx4_is_bonded(dev)) { err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, prot, reg_id.mirror); if (err) return err; } mutex_lock(&mqp->mutex); ge = find_gid_entry(mqp, gid->raw); if (ge) { spin_lock_bh(&mdev->iboe.lock); ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; if (ndev) dev_hold(ndev); spin_unlock_bh(&mdev->iboe.lock); if (ndev) dev_put(ndev); list_del(&ge->list); kfree(ge); } else pr_warn("could not find mgid entry\n"); mutex_unlock(&mqp->mutex); return 0; } static int init_node_data(struct mlx4_ib_dev *dev) { struct ib_smp *in_mad = NULL; struct ib_smp *out_mad = NULL; int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; int err = -ENOMEM; in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) goto out; init_query_mad(in_mad); in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; if (mlx4_is_master(dev->dev)) mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); if (err) goto out; memcpy(dev->ib_dev.node_desc, out_mad->data, 64); in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); if (err) goto out; dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); out: kfree(in_mad); kfree(out_mad); return err; } static ssize_t show_hca(struct device *device, struct device_attribute *attr, char *buf) { struct mlx4_ib_dev *dev = container_of(device, struct mlx4_ib_dev, ib_dev.dev); return sprintf(buf, "MT%d\n", dev->dev->persist->pdev->device); } static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, char *buf) { struct mlx4_ib_dev *dev = container_of(device, struct mlx4_ib_dev, ib_dev.dev); return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, (int) dev->dev->caps.fw_ver & 0xffff); } static ssize_t show_rev(struct device *device, struct device_attribute *attr, char *buf) { struct mlx4_ib_dev *dev = container_of(device, struct mlx4_ib_dev, ib_dev.dev); return sprintf(buf, "%x\n", dev->dev->rev_id); } static ssize_t show_board(struct device *device, struct device_attribute *attr, char *buf) { struct mlx4_ib_dev *dev = container_of(device, struct mlx4_ib_dev, ib_dev.dev); return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id); } static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); static struct device_attribute *mlx4_class_attributes[] = { &dev_attr_hw_rev, &dev_attr_fw_ver, &dev_attr_hca_type, &dev_attr_board_id }; static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev) { memcpy(eui, dev->dev_addr, 3); memcpy(eui + 5, dev->dev_addr + 3, 3); if (vlan_id < 0x1000) { eui[3] = vlan_id >> 8; eui[4] = vlan_id & 0xff; } else { eui[3] = 0xff; eui[4] = 0xfe; } eui[0] ^= 2; } static void update_gids_task(struct work_struct *work) { struct update_gid_work *gw = container_of(work, struct update_gid_work, work); struct mlx4_cmd_mailbox *mailbox; union ib_gid *gids; int err; struct mlx4_dev *dev = gw->dev->dev; int is_bonded = mlx4_is_bonded(dev); if (!gw->dev->ib_active) return; mailbox = mlx4_alloc_cmd_mailbox(dev); if (IS_ERR(mailbox)) { pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); return; } gids = mailbox->buf; memcpy(gids, gw->gids, sizeof gw->gids); err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); if (err) pr_warn("set port command failed\n"); else if ((gw->port == 1) || !is_bonded) mlx4_ib_dispatch_event(gw->dev, is_bonded ? 1 : gw->port, IB_EVENT_GID_CHANGE); mlx4_free_cmd_mailbox(dev, mailbox); kfree(gw); } static void reset_gids_task(struct work_struct *work) { struct update_gid_work *gw = container_of(work, struct update_gid_work, work); struct mlx4_cmd_mailbox *mailbox; union ib_gid *gids; int err; struct mlx4_dev *dev = gw->dev->dev; if (!gw->dev->ib_active) return; mailbox = mlx4_alloc_cmd_mailbox(dev); if (IS_ERR(mailbox)) { pr_warn("reset gid table failed\n"); goto free; } gids = mailbox->buf; memcpy(gids, gw->gids, sizeof(gw->gids)); if (mlx4_ib_port_link_layer(&gw->dev->ib_dev, gw->port) == IB_LINK_LAYER_ETHERNET) { err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); if (err) pr_warn("set port %d command failed\n", gw->port); } mlx4_free_cmd_mailbox(dev, mailbox); free: kfree(gw); } static int update_gid_table(struct mlx4_ib_dev *dev, int port, union ib_gid *gid, int clear, int default_gid) { struct update_gid_work *work; int i; int need_update = 0; int free = -1; int found = -1; int max_gids; if (default_gid) { free = 0; } else { max_gids = dev->dev->caps.gid_table_len[port]; for (i = 1; i < max_gids; ++i) { if (!memcmp(&dev->iboe.gid_table[port - 1][i], gid, sizeof(*gid))) found = i; if (clear) { if (found >= 0) { need_update = 1; dev->iboe.gid_table[port - 1][found] = zgid; break; } } else { if (found >= 0) break; if (free < 0 && !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof(*gid))) free = i; } } } if (found == -1 && !clear && free >= 0) { dev->iboe.gid_table[port - 1][free] = *gid; need_update = 1; } if (!need_update) return 0; work = kzalloc(sizeof(*work), GFP_ATOMIC); if (!work) return -ENOMEM; memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof(work->gids)); INIT_WORK(&work->work, update_gids_task); work->port = port; work->dev = dev; queue_work(wq, &work->work); return 0; } static void mlx4_make_default_gid(struct net_device *dev, union ib_gid *gid) { gid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); mlx4_addrconf_ifid_eui48(&gid->raw[8], 0xffff, dev); } static int reset_gid_table(struct mlx4_ib_dev *dev, u8 port) { struct update_gid_work *work; work = kzalloc(sizeof(*work), GFP_ATOMIC); if (!work) return -ENOMEM; memset(dev->iboe.gid_table[port - 1], 0, sizeof(work->gids)); memset(work->gids, 0, sizeof(work->gids)); INIT_WORK(&work->work, reset_gids_task); work->dev = dev; work->port = port; queue_work(wq, &work->work); return 0; } static int mlx4_ib_addr_event(int event, struct net_device *event_netdev, struct mlx4_ib_dev *ibdev, union ib_gid *gid) { struct mlx4_ib_iboe *iboe; int port = 0; struct net_device *real_dev = rdma_vlan_dev_real_dev(event_netdev) ? rdma_vlan_dev_real_dev(event_netdev) : event_netdev; union ib_gid default_gid; mlx4_make_default_gid(real_dev, &default_gid); if (!memcmp(gid, &default_gid, sizeof(*gid))) return 0; if (event != NETDEV_DOWN && event != NETDEV_UP) return 0; if ((real_dev != event_netdev) && (event == NETDEV_DOWN) && rdma_link_local_addr((struct in6_addr *)gid)) return 0; iboe = &ibdev->iboe; spin_lock_bh(&iboe->lock); for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) if ((netif_is_bond_master(real_dev) && (real_dev == iboe->masters[port - 1])) || (!netif_is_bond_master(real_dev) && (real_dev == iboe->netdevs[port - 1]))) update_gid_table(ibdev, port, gid, event == NETDEV_DOWN, 0); spin_unlock_bh(&iboe->lock); return 0; } static u8 mlx4_ib_get_dev_port(struct net_device *dev, struct mlx4_ib_dev *ibdev) { u8 port = 0; struct mlx4_ib_iboe *iboe; struct net_device *real_dev = rdma_vlan_dev_real_dev(dev) ? rdma_vlan_dev_real_dev(dev) : dev; iboe = &ibdev->iboe; for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) if ((netif_is_bond_master(real_dev) && (real_dev == iboe->masters[port - 1])) || (!netif_is_bond_master(real_dev) && (real_dev == iboe->netdevs[port - 1]))) break; if ((port == 0) || (port > ibdev->dev->caps.num_ports)) return 0; else return port; } static int mlx4_ib_inet_event(struct notifier_block *this, unsigned long event, void *ptr) { struct mlx4_ib_dev *ibdev; struct in_ifaddr *ifa = ptr; union ib_gid gid; struct net_device *event_netdev = ifa->ifa_dev->dev; ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet); mlx4_ib_addr_event(event, event_netdev, ibdev, &gid); return NOTIFY_DONE; } #if IS_ENABLED(CONFIG_IPV6) static int mlx4_ib_inet6_event(struct notifier_block *this, unsigned long event, void *ptr) { struct mlx4_ib_dev *ibdev; struct inet6_ifaddr *ifa = ptr; union ib_gid *gid = (union ib_gid *)&ifa->addr; struct net_device *event_netdev = ifa->idev->dev; ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb_inet6); mlx4_ib_addr_event(event, event_netdev, ibdev, gid); return NOTIFY_DONE; } #endif #define MLX4_IB_INVALID_MAC ((u64)-1) static void mlx4_ib_update_qps(struct mlx4_ib_dev *ibdev, struct net_device *dev, int port) { u64 new_smac = 0; u64 release_mac = MLX4_IB_INVALID_MAC; struct mlx4_ib_qp *qp; read_lock(&dev_base_lock); new_smac = mlx4_mac_to_u64(dev->dev_addr); read_unlock(&dev_base_lock); atomic64_set(&ibdev->iboe.mac[port - 1], new_smac); /* no need for update QP1 and mac registration in non-SRIOV */ if (!mlx4_is_mfunc(ibdev->dev)) return; mutex_lock(&ibdev->qp1_proxy_lock[port - 1]); qp = ibdev->qp1_proxy[port - 1]; if (qp) { int new_smac_index; u64 old_smac; struct mlx4_update_qp_params update_params; mutex_lock(&qp->mutex); old_smac = qp->pri.smac; if (new_smac == old_smac) goto unlock; new_smac_index = mlx4_register_mac(ibdev->dev, port, new_smac); if (new_smac_index < 0) goto unlock; update_params.smac_index = new_smac_index; if (mlx4_update_qp(ibdev->dev, qp->mqp.qpn, MLX4_UPDATE_QP_SMAC, &update_params)) { release_mac = new_smac; goto unlock; } /* if old port was zero, no mac was yet registered for this QP */ if (qp->pri.smac_port) release_mac = old_smac; qp->pri.smac = new_smac; qp->pri.smac_port = port; qp->pri.smac_index = new_smac_index; } unlock: if (release_mac != MLX4_IB_INVALID_MAC) mlx4_unregister_mac(ibdev->dev, port, release_mac); if (qp) mutex_unlock(&qp->mutex); mutex_unlock(&ibdev->qp1_proxy_lock[port - 1]); } static void mlx4_ib_get_dev_addr(struct net_device *dev, struct mlx4_ib_dev *ibdev, u8 port) { struct in_device *in_dev; #if IS_ENABLED(CONFIG_IPV6) struct inet6_dev *in6_dev; union ib_gid *pgid; struct inet6_ifaddr *ifp; union ib_gid default_gid; #endif union ib_gid gid; if ((port == 0) || (port > ibdev->dev->caps.num_ports)) return; /* IPv4 gids */ in_dev = in_dev_get(dev); if (in_dev) { for_ifa(in_dev) { /*ifa->ifa_address;*/ ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); update_gid_table(ibdev, port, &gid, 0, 0); } endfor_ifa(in_dev); in_dev_put(in_dev); } #if IS_ENABLED(CONFIG_IPV6) mlx4_make_default_gid(dev, &default_gid); /* IPv6 gids */ in6_dev = in6_dev_get(dev); if (in6_dev) { read_lock_bh(&in6_dev->lock); list_for_each_entry(ifp, &in6_dev->addr_list, if_list) { pgid = (union ib_gid *)&ifp->addr; if (!memcmp(pgid, &default_gid, sizeof(*pgid))) continue; update_gid_table(ibdev, port, pgid, 0, 0); } read_unlock_bh(&in6_dev->lock); in6_dev_put(in6_dev); } #endif } static void mlx4_ib_set_default_gid(struct mlx4_ib_dev *ibdev, struct net_device *dev, u8 port) { union ib_gid gid; mlx4_make_default_gid(dev, &gid); update_gid_table(ibdev, port, &gid, 0, 1); } static int mlx4_ib_init_gid_table(struct mlx4_ib_dev *ibdev) { struct net_device *dev; struct mlx4_ib_iboe *iboe = &ibdev->iboe; int i; int err = 0; for (i = 1; i <= ibdev->num_ports; ++i) { if (rdma_port_get_link_layer(&ibdev->ib_dev, i) == IB_LINK_LAYER_ETHERNET) { err = reset_gid_table(ibdev, i); if (err) goto out; } } read_lock(&dev_base_lock); spin_lock_bh(&iboe->lock); for_each_netdev(&init_net, dev) { u8 port = mlx4_ib_get_dev_port(dev, ibdev); /* port will be non-zero only for ETH ports */ if (port) { mlx4_ib_set_default_gid(ibdev, dev, port); mlx4_ib_get_dev_addr(dev, ibdev, port); } } spin_unlock_bh(&iboe->lock); read_unlock(&dev_base_lock); out: return err; } static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev, struct net_device *dev, unsigned long event) { struct mlx4_ib_iboe *iboe; int update_qps_port = -1; int port; iboe = &ibdev->iboe; spin_lock_bh(&iboe->lock); mlx4_foreach_ib_transport_port(port, ibdev->dev) { enum ib_port_state port_state = IB_PORT_NOP; struct net_device *old_master = iboe->masters[port - 1]; struct net_device *curr_netdev; struct net_device *curr_master; iboe->netdevs[port - 1] = mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); if (iboe->netdevs[port - 1]) mlx4_ib_set_default_gid(ibdev, iboe->netdevs[port - 1], port); curr_netdev = iboe->netdevs[port - 1]; if (iboe->netdevs[port - 1] && netif_is_bond_slave(iboe->netdevs[port - 1])) { iboe->masters[port - 1] = netdev_master_upper_dev_get( iboe->netdevs[port - 1]); } else { iboe->masters[port - 1] = NULL; } curr_master = iboe->masters[port - 1]; if (dev == iboe->netdevs[port - 1] && (event == NETDEV_CHANGEADDR || event == NETDEV_REGISTER || event == NETDEV_UP || event == NETDEV_CHANGE)) update_qps_port = port; if (curr_netdev) { port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ? IB_PORT_ACTIVE : IB_PORT_DOWN; mlx4_ib_set_default_gid(ibdev, curr_netdev, port); if (curr_master) { /* if using bonding/team and a slave port is down, we * don't want the bond IP based gids in the table since * flows that select port by gid may get the down port. */ if (port_state == IB_PORT_DOWN && !mlx4_is_bonded(ibdev->dev)) { reset_gid_table(ibdev, port); mlx4_ib_set_default_gid(ibdev, curr_netdev, port); } else { /* gids from the upper dev (bond/team) * should appear in port's gid table */ mlx4_ib_get_dev_addr(curr_master, ibdev, port); } } /* if bonding is used it is possible that we add it to * masters only after IP address is assigned to the * net bonding interface. */ if (curr_master && (old_master != curr_master)) { reset_gid_table(ibdev, port); mlx4_ib_set_default_gid(ibdev, curr_netdev, port); mlx4_ib_get_dev_addr(curr_master, ibdev, port); } if (!curr_master && (old_master != curr_master)) { reset_gid_table(ibdev, port); mlx4_ib_set_default_gid(ibdev, curr_netdev, port); mlx4_ib_get_dev_addr(curr_netdev, ibdev, port); } } else { reset_gid_table(ibdev, port); } } spin_unlock_bh(&iboe->lock); if (update_qps_port > 0) mlx4_ib_update_qps(ibdev, dev, update_qps_port); } static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct mlx4_ib_dev *ibdev; if (!net_eq(dev_net(dev), &init_net)) return NOTIFY_DONE; ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); mlx4_ib_scan_netdevs(ibdev, dev, event); return NOTIFY_DONE; } static void init_pkeys(struct mlx4_ib_dev *ibdev) { int port; int slave; int i; if (mlx4_is_master(ibdev->dev)) { for (slave = 0; slave <= ibdev->dev->persist->num_vfs; ++slave) { for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { for (i = 0; i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; ++i) { ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = /* master has the identity virt2phys pkey mapping */ (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; mlx4_sync_pkey_table(ibdev->dev, slave, port, i, ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); } } } /* initialize pkey cache */ for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { for (i = 0; i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; ++i) ibdev->pkeys.phys_pkey_cache[port-1][i] = (i) ? 0 : 0xFFFF; } } } static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) { char name[80]; int eq_per_port = 0; int added_eqs = 0; int total_eqs = 0; int i, j, eq; /* Legacy mode or comp_pool is not large enough */ if (dev->caps.comp_pool == 0 || dev->caps.num_ports > dev->caps.comp_pool) return; eq_per_port = dev->caps.comp_pool / dev->caps.num_ports; /* Init eq table */ added_eqs = 0; mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) added_eqs += eq_per_port; total_eqs = dev->caps.num_comp_vectors + added_eqs; ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); if (!ibdev->eq_table) return; ibdev->eq_added = added_eqs; eq = 0; mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { for (j = 0; j < eq_per_port; j++) { snprintf(name, sizeof(name), "mlx4-ib-%d-%d@%s", i, j, dev->persist->pdev->bus->name); /* Set IRQ for specific name (per ring) */ if (mlx4_assign_eq(dev, name, NULL, &ibdev->eq_table[eq])) { /* Use legacy (same as mlx4_en driver) */ pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); ibdev->eq_table[eq] = (eq % dev->caps.num_comp_vectors); } eq++; } } /* Fill the reset of the vector with legacy EQ */ for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) ibdev->eq_table[eq++] = i; /* Advertise the new number of EQs to clients */ ibdev->ib_dev.num_comp_vectors = total_eqs; } static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) { int i; /* no additional eqs were added */ if (!ibdev->eq_table) return; /* Reset the advertised EQ number */ ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; /* Free only the added eqs */ for (i = 0; i < ibdev->eq_added; i++) { /* Don't free legacy eqs if used */ if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) continue; mlx4_release_eq(dev, ibdev->eq_table[i]); } kfree(ibdev->eq_table); } static void *mlx4_ib_add(struct mlx4_dev *dev) { struct mlx4_ib_dev *ibdev; int num_ports = 0; int i, j; int err; struct mlx4_ib_iboe *iboe; int ib_num_ports = 0; int num_req_counters; pr_info_once("%s", mlx4_ib_version); num_ports = 0; mlx4_foreach_ib_transport_port(i, dev) num_ports++; /* No point in registering a device with no ports... */ if (num_ports == 0) return NULL; ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); if (!ibdev) { dev_err(&dev->persist->pdev->dev, "Device struct alloc failed\n"); return NULL; } iboe = &ibdev->iboe; if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) goto err_dealloc; if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) goto err_pd; ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE); if (!ibdev->uar_map) goto err_uar; MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); ibdev->dev = dev; ibdev->bond_next_port = 0; strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); ibdev->ib_dev.owner = THIS_MODULE; ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; ibdev->num_ports = num_ports; ibdev->ib_dev.phys_port_cnt = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; ibdev->ib_dev.dma_device = &dev->persist->pdev->dev; if (dev->caps.userspace_caps) ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; else ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION; ibdev->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_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); ibdev->ib_dev.query_device = mlx4_ib_query_device; ibdev->ib_dev.query_port = mlx4_ib_query_port; ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; ibdev->ib_dev.query_gid = mlx4_ib_query_gid; ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; ibdev->ib_dev.modify_device = mlx4_ib_modify_device; ibdev->ib_dev.modify_port = mlx4_ib_modify_port; ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; ibdev->ib_dev.mmap = mlx4_ib_mmap; ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; ibdev->ib_dev.create_ah = mlx4_ib_create_ah; ibdev->ib_dev.query_ah = mlx4_ib_query_ah; ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; ibdev->ib_dev.create_srq = mlx4_ib_create_srq; ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; ibdev->ib_dev.query_srq = mlx4_ib_query_srq; ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; ibdev->ib_dev.create_qp = mlx4_ib_create_qp; ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; ibdev->ib_dev.query_qp = mlx4_ib_query_qp; ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; ibdev->ib_dev.post_send = mlx4_ib_post_send; ibdev->ib_dev.post_recv = mlx4_ib_post_recv; ibdev->ib_dev.create_cq = mlx4_ib_create_cq; ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr; ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; ibdev->ib_dev.process_mad = mlx4_ib_process_mad; if (!mlx4_is_slave(ibdev->dev)) { ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; } if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) { ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw; ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw; ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw; ibdev->ib_dev.uverbs_cmd_mask |= (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | (1ull << IB_USER_VERBS_CMD_DEALLOC_MW); } if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; ibdev->ib_dev.uverbs_cmd_mask |= (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); } if (check_flow_steering_support(dev)) { ibdev->steering_support = MLX4_STEERING_MODE_DEVICE_MANAGED; ibdev->ib_dev.create_flow = mlx4_ib_create_flow; ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow; ibdev->ib_dev.uverbs_ex_cmd_mask |= (1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) | (1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW); } mlx4_ib_alloc_eqs(dev, ibdev); spin_lock_init(&iboe->lock); if (init_node_data(ibdev)) goto err_map; num_req_counters = mlx4_is_bonded(dev) ? 1 : ibdev->num_ports; for (i = 0; i < num_req_counters; ++i) { mutex_init(&ibdev->qp1_proxy_lock[i]); if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == IB_LINK_LAYER_ETHERNET) { err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); if (err) ibdev->counters[i] = -1; } else { ibdev->counters[i] = -1; } } if (mlx4_is_bonded(dev)) for (i = 1; i < ibdev->num_ports ; ++i) ibdev->counters[i] = ibdev->counters[0]; mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) ib_num_ports++; spin_lock_init(&ibdev->sm_lock); mutex_init(&ibdev->cap_mask_mutex); INIT_LIST_HEAD(&ibdev->qp_list); spin_lock_init(&ibdev->reset_flow_resource_lock); if (ibdev->steering_support == MLX4_STEERING_MODE_DEVICE_MANAGED && ib_num_ports) { ibdev->steer_qpn_count = MLX4_IB_UC_MAX_NUM_QPS; err = mlx4_qp_reserve_range(dev, ibdev->steer_qpn_count, MLX4_IB_UC_STEER_QPN_ALIGN, &ibdev->steer_qpn_base, 0); if (err) goto err_counter; ibdev->ib_uc_qpns_bitmap = kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) * sizeof(long), GFP_KERNEL); if (!ibdev->ib_uc_qpns_bitmap) { dev_err(&dev->persist->pdev->dev, "bit map alloc failed\n"); goto err_steer_qp_release; } bitmap_zero(ibdev->ib_uc_qpns_bitmap, ibdev->steer_qpn_count); err = mlx4_FLOW_STEERING_IB_UC_QP_RANGE( dev, ibdev->steer_qpn_base, ibdev->steer_qpn_base + ibdev->steer_qpn_count - 1); if (err) goto err_steer_free_bitmap; } for (j = 1; j <= ibdev->dev->caps.num_ports; j++) atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]); if (ib_register_device(&ibdev->ib_dev, NULL)) goto err_steer_free_bitmap; if (mlx4_ib_mad_init(ibdev)) goto err_reg; if (mlx4_ib_init_sriov(ibdev)) goto err_mad; if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) { if (!iboe->nb.notifier_call) { iboe->nb.notifier_call = mlx4_ib_netdev_event; err = register_netdevice_notifier(&iboe->nb); if (err) { iboe->nb.notifier_call = NULL; goto err_notif; } } if (!iboe->nb_inet.notifier_call) { iboe->nb_inet.notifier_call = mlx4_ib_inet_event; err = register_inetaddr_notifier(&iboe->nb_inet); if (err) { iboe->nb_inet.notifier_call = NULL; goto err_notif; } } #if IS_ENABLED(CONFIG_IPV6) if (!iboe->nb_inet6.notifier_call) { iboe->nb_inet6.notifier_call = mlx4_ib_inet6_event; err = register_inet6addr_notifier(&iboe->nb_inet6); if (err) { iboe->nb_inet6.notifier_call = NULL; goto err_notif; } } #endif if (mlx4_ib_init_gid_table(ibdev)) goto err_notif; } for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { if (device_create_file(&ibdev->ib_dev.dev, mlx4_class_attributes[j])) goto err_notif; } ibdev->ib_active = true; if (mlx4_is_mfunc(ibdev->dev)) init_pkeys(ibdev); /* create paravirt contexts for any VFs which are active */ if (mlx4_is_master(ibdev->dev)) { for (j = 0; j < MLX4_MFUNC_MAX; j++) { if (j == mlx4_master_func_num(ibdev->dev)) continue; if (mlx4_is_slave_active(ibdev->dev, j)) do_slave_init(ibdev, j, 1); } } return ibdev; err_notif: if (ibdev->iboe.nb.notifier_call) { if (unregister_netdevice_notifier(&ibdev->iboe.nb)) pr_warn("failure unregistering notifier\n"); ibdev->iboe.nb.notifier_call = NULL; } if (ibdev->iboe.nb_inet.notifier_call) { if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet)) pr_warn("failure unregistering notifier\n"); ibdev->iboe.nb_inet.notifier_call = NULL; } #if IS_ENABLED(CONFIG_IPV6) if (ibdev->iboe.nb_inet6.notifier_call) { if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6)) pr_warn("failure unregistering notifier\n"); ibdev->iboe.nb_inet6.notifier_call = NULL; } #endif flush_workqueue(wq); mlx4_ib_close_sriov(ibdev); err_mad: mlx4_ib_mad_cleanup(ibdev); err_reg: ib_unregister_device(&ibdev->ib_dev); err_steer_free_bitmap: kfree(ibdev->ib_uc_qpns_bitmap); err_steer_qp_release: mlx4_qp_release_range(dev, ibdev->steer_qpn_base, ibdev->steer_qpn_count); err_counter: for (; i; --i) if (ibdev->counters[i - 1] != -1) mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); err_map: mlx4_ib_free_eqs(dev, ibdev); iounmap(ibdev->uar_map); err_uar: mlx4_uar_free(dev, &ibdev->priv_uar); err_pd: mlx4_pd_free(dev, ibdev->priv_pdn); err_dealloc: ib_dealloc_device(&ibdev->ib_dev); return NULL; } int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn) { int offset; WARN_ON(!dev->ib_uc_qpns_bitmap); offset = bitmap_find_free_region(dev->ib_uc_qpns_bitmap, dev->steer_qpn_count, get_count_order(count)); if (offset < 0) return offset; *qpn = dev->steer_qpn_base + offset; return 0; } void mlx4_ib_steer_qp_free(struct mlx4_ib_dev *dev, u32 qpn, int count) { if (!qpn || dev->steering_support != MLX4_STEERING_MODE_DEVICE_MANAGED) return; BUG_ON(qpn < dev->steer_qpn_base); bitmap_release_region(dev->ib_uc_qpns_bitmap, qpn - dev->steer_qpn_base, get_count_order(count)); } int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, int is_attach) { int err; size_t flow_size; struct ib_flow_attr *flow = NULL; struct ib_flow_spec_ib *ib_spec; if (is_attach) { flow_size = sizeof(struct ib_flow_attr) + sizeof(struct ib_flow_spec_ib); flow = kzalloc(flow_size, GFP_KERNEL); if (!flow) return -ENOMEM; flow->port = mqp->port; flow->num_of_specs = 1; flow->size = flow_size; ib_spec = (struct ib_flow_spec_ib *)(flow + 1); ib_spec->type = IB_FLOW_SPEC_IB; ib_spec->size = sizeof(struct ib_flow_spec_ib); /* Add an empty rule for IB L2 */ memset(&ib_spec->mask, 0, sizeof(ib_spec->mask)); err = __mlx4_ib_create_flow(&mqp->ibqp, flow, IB_FLOW_DOMAIN_NIC, MLX4_FS_REGULAR, &mqp->reg_id); } else { err = __mlx4_ib_destroy_flow(mdev->dev, mqp->reg_id); } kfree(flow); return err; } static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) { struct mlx4_ib_dev *ibdev = ibdev_ptr; int p; ibdev->ib_active = false; flush_workqueue(wq); mlx4_ib_close_sriov(ibdev); mlx4_ib_mad_cleanup(ibdev); ib_unregister_device(&ibdev->ib_dev); if (ibdev->iboe.nb.notifier_call) { if (unregister_netdevice_notifier(&ibdev->iboe.nb)) pr_warn("failure unregistering notifier\n"); ibdev->iboe.nb.notifier_call = NULL; } mlx4_qp_release_range(dev, ibdev->steer_qpn_base, ibdev->steer_qpn_count); kfree(ibdev->ib_uc_qpns_bitmap); if (ibdev->iboe.nb_inet.notifier_call) { if (unregister_inetaddr_notifier(&ibdev->iboe.nb_inet)) pr_warn("failure unregistering notifier\n"); ibdev->iboe.nb_inet.notifier_call = NULL; } #if IS_ENABLED(CONFIG_IPV6) if (ibdev->iboe.nb_inet6.notifier_call) { if (unregister_inet6addr_notifier(&ibdev->iboe.nb_inet6)) pr_warn("failure unregistering notifier\n"); ibdev->iboe.nb_inet6.notifier_call = NULL; } #endif iounmap(ibdev->uar_map); for (p = 0; p < ibdev->num_ports; ++p) if (ibdev->counters[p] != -1) mlx4_counter_free(ibdev->dev, ibdev->counters[p]); mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) mlx4_CLOSE_PORT(dev, p); mlx4_ib_free_eqs(dev, ibdev); mlx4_uar_free(dev, &ibdev->priv_uar); mlx4_pd_free(dev, ibdev->priv_pdn); ib_dealloc_device(&ibdev->ib_dev); } static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) { struct mlx4_ib_demux_work **dm = NULL; struct mlx4_dev *dev = ibdev->dev; int i; unsigned long flags; struct mlx4_active_ports actv_ports; unsigned int ports; unsigned int first_port; if (!mlx4_is_master(dev)) return; actv_ports = mlx4_get_active_ports(dev, slave); ports = bitmap_weight(actv_ports.ports, dev->caps.num_ports); first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports); dm = kcalloc(ports, sizeof(*dm), GFP_ATOMIC); if (!dm) { pr_err("failed to allocate memory for tunneling qp update\n"); goto out; } for (i = 0; i < ports; i++) { dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); if (!dm[i]) { pr_err("failed to allocate memory for tunneling qp update work struct\n"); for (i = 0; i < dev->caps.num_ports; i++) { if (dm[i]) kfree(dm[i]); } goto out; } } /* initialize or tear down tunnel QPs for the slave */ for (i = 0; i < ports; i++) { INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); dm[i]->port = first_port + i + 1; dm[i]->slave = slave; dm[i]->do_init = do_init; dm[i]->dev = ibdev; spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); if (!ibdev->sriov.is_going_down) queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); } out: kfree(dm); return; } static void mlx4_ib_handle_catas_error(struct mlx4_ib_dev *ibdev) { struct mlx4_ib_qp *mqp; unsigned long flags_qp; unsigned long flags_cq; struct mlx4_ib_cq *send_mcq, *recv_mcq; struct list_head cq_notify_list; struct mlx4_cq *mcq; unsigned long flags; pr_warn("mlx4_ib_handle_catas_error was started\n"); INIT_LIST_HEAD(&cq_notify_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_notify_list); } } spin_unlock_irqrestore(&send_mcq->lock, flags_cq); } spin_unlock_irqrestore(&mqp->sq.lock, flags_qp); /* Now, handle the QP's receive queue */ 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_notify_list); } } spin_unlock_irqrestore(&recv_mcq->lock, flags_cq); } } spin_unlock_irqrestore(&mqp->rq.lock, flags_qp); } list_for_each_entry(mcq, &cq_notify_list, reset_notify) { mcq->comp(mcq); } spin_unlock_irqrestore(&ibdev->reset_flow_resource_lock, flags); pr_warn("mlx4_ib_handle_catas_error ended\n"); } static void handle_bonded_port_state_event(struct work_struct *work) { struct ib_event_work *ew = container_of(work, struct ib_event_work, work); struct mlx4_ib_dev *ibdev = ew->ib_dev; enum ib_port_state bonded_port_state = IB_PORT_NOP; int i; struct ib_event ibev; kfree(ew); spin_lock_bh(&ibdev->iboe.lock); for (i = 0; i < MLX4_MAX_PORTS; ++i) { struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; enum ib_port_state curr_port_state; if (!curr_netdev) continue; curr_port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ? IB_PORT_ACTIVE : IB_PORT_DOWN; bonded_port_state = (bonded_port_state != IB_PORT_ACTIVE) ? curr_port_state : IB_PORT_ACTIVE; } spin_unlock_bh(&ibdev->iboe.lock); ibev.device = &ibdev->ib_dev; ibev.element.port_num = 1; ibev.event = (bonded_port_state == IB_PORT_ACTIVE) ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; ib_dispatch_event(&ibev); } static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, enum mlx4_dev_event event, unsigned long param) { struct ib_event ibev; struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); struct mlx4_eqe *eqe = NULL; struct ib_event_work *ew; int p = 0; if (mlx4_is_bonded(dev) && ((event == MLX4_DEV_EVENT_PORT_UP) || (event == MLX4_DEV_EVENT_PORT_DOWN))) { ew = kmalloc(sizeof(*ew), GFP_ATOMIC); if (!ew) return; INIT_WORK(&ew->work, handle_bonded_port_state_event); ew->ib_dev = ibdev; queue_work(wq, &ew->work); return; } if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) eqe = (struct mlx4_eqe *)param; else p = (int) param; switch (event) { case MLX4_DEV_EVENT_PORT_UP: if (p > ibdev->num_ports) return; if (mlx4_is_master(dev) && rdma_port_get_link_layer(&ibdev->ib_dev, p) == IB_LINK_LAYER_INFINIBAND) { mlx4_ib_invalidate_all_guid_record(ibdev, p); } ibev.event = IB_EVENT_PORT_ACTIVE; break; case MLX4_DEV_EVENT_PORT_DOWN: if (p > ibdev->num_ports) return; ibev.event = IB_EVENT_PORT_ERR; break; case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: ibdev->ib_active = false; ibev.event = IB_EVENT_DEVICE_FATAL; mlx4_ib_handle_catas_error(ibdev); break; case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: ew = kmalloc(sizeof *ew, GFP_ATOMIC); if (!ew) { pr_err("failed to allocate memory for events work\n"); break; } INIT_WORK(&ew->work, handle_port_mgmt_change_event); memcpy(&ew->ib_eqe, eqe, sizeof *eqe); ew->ib_dev = ibdev; /* need to queue only for port owner, which uses GEN_EQE */ if (mlx4_is_master(dev)) queue_work(wq, &ew->work); else handle_port_mgmt_change_event(&ew->work); return; case MLX4_DEV_EVENT_SLAVE_INIT: /* here, p is the slave id */ do_slave_init(ibdev, p, 1); if (mlx4_is_master(dev)) { int i; for (i = 1; i <= ibdev->num_ports; i++) { if (rdma_port_get_link_layer(&ibdev->ib_dev, i) == IB_LINK_LAYER_INFINIBAND) mlx4_ib_slave_alias_guid_event(ibdev, p, i, 1); } } return; case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: if (mlx4_is_master(dev)) { int i; for (i = 1; i <= ibdev->num_ports; i++) { if (rdma_port_get_link_layer(&ibdev->ib_dev, i) == IB_LINK_LAYER_INFINIBAND) mlx4_ib_slave_alias_guid_event(ibdev, p, i, 0); } } /* here, p is the slave id */ do_slave_init(ibdev, p, 0); return; default: return; } ibev.device = ibdev_ptr; ibev.element.port_num = mlx4_is_bonded(ibdev->dev) ? 1 : (u8)p; ib_dispatch_event(&ibev); } static struct mlx4_interface mlx4_ib_interface = { .add = mlx4_ib_add, .remove = mlx4_ib_remove, .event = mlx4_ib_event, .protocol = MLX4_PROT_IB_IPV6, .flags = MLX4_INTFF_BONDING }; static int __init mlx4_ib_init(void) { int err; wq = create_singlethread_workqueue("mlx4_ib"); if (!wq) return -ENOMEM; err = mlx4_ib_mcg_init(); if (err) goto clean_wq; err = mlx4_register_interface(&mlx4_ib_interface); if (err) goto clean_mcg; return 0; clean_mcg: mlx4_ib_mcg_destroy(); clean_wq: destroy_workqueue(wq); return err; } static void __exit mlx4_ib_cleanup(void) { mlx4_unregister_interface(&mlx4_ib_interface); mlx4_ib_mcg_destroy(); destroy_workqueue(wq); } module_init(mlx4_ib_init); module_exit(mlx4_ib_cleanup);