/* * Broadcom NetXtreme-E RoCE driver. * * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term * Broadcom refers to Broadcom Limited and/or its subsidiaries. * * 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 * BSD license below: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Description: IB Verbs interpreter */ #include #include #include #include #include #include #include #include #include #include #include #include "bnxt_ulp.h" #include "roce_hsi.h" #include "qplib_res.h" #include "qplib_sp.h" #include "qplib_fp.h" #include "qplib_rcfw.h" #include "bnxt_re.h" #include "ib_verbs.h" #include static int bnxt_re_build_sgl(struct ib_sge *ib_sg_list, struct bnxt_qplib_sge *sg_list, int num) { int i, total = 0; for (i = 0; i < num; i++) { sg_list[i].addr = ib_sg_list[i].addr; sg_list[i].lkey = ib_sg_list[i].lkey; sg_list[i].size = ib_sg_list[i].length; total += sg_list[i].size; } return total; } /* Device */ struct net_device *bnxt_re_get_netdev(struct ib_device *ibdev, u8 port_num) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); struct net_device *netdev = NULL; rcu_read_lock(); if (rdev) netdev = rdev->netdev; if (netdev) dev_hold(netdev); rcu_read_unlock(); return netdev; } int bnxt_re_query_device(struct ib_device *ibdev, struct ib_device_attr *ib_attr, struct ib_udata *udata) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; memset(ib_attr, 0, sizeof(*ib_attr)); ib_attr->fw_ver = (u64)(unsigned long)(dev_attr->fw_ver); bnxt_qplib_get_guid(rdev->netdev->dev_addr, (u8 *)&ib_attr->sys_image_guid); ib_attr->max_mr_size = ~0ull; ib_attr->page_size_cap = BNXT_RE_PAGE_SIZE_4K | BNXT_RE_PAGE_SIZE_8K | BNXT_RE_PAGE_SIZE_64K | BNXT_RE_PAGE_SIZE_2M | BNXT_RE_PAGE_SIZE_8M | BNXT_RE_PAGE_SIZE_1G; ib_attr->vendor_id = rdev->en_dev->pdev->vendor; ib_attr->vendor_part_id = rdev->en_dev->pdev->device; ib_attr->hw_ver = rdev->en_dev->pdev->subsystem_device; ib_attr->max_qp = dev_attr->max_qp; ib_attr->max_qp_wr = dev_attr->max_qp_wqes; ib_attr->device_cap_flags = IB_DEVICE_CURR_QP_STATE_MOD | IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_SHUTDOWN_PORT | IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_RESIZE_MAX_WR | IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_N_NOTIFY_CQ | IB_DEVICE_MEM_WINDOW | IB_DEVICE_MEM_WINDOW_TYPE_2B | IB_DEVICE_MEM_MGT_EXTENSIONS; ib_attr->max_sge = dev_attr->max_qp_sges; ib_attr->max_sge_rd = dev_attr->max_qp_sges; ib_attr->max_cq = dev_attr->max_cq; ib_attr->max_cqe = dev_attr->max_cq_wqes; ib_attr->max_mr = dev_attr->max_mr; ib_attr->max_pd = dev_attr->max_pd; ib_attr->max_qp_rd_atom = dev_attr->max_qp_rd_atom; ib_attr->max_qp_init_rd_atom = dev_attr->max_qp_rd_atom; ib_attr->atomic_cap = IB_ATOMIC_HCA; ib_attr->masked_atomic_cap = IB_ATOMIC_HCA; ib_attr->max_ee_rd_atom = 0; ib_attr->max_res_rd_atom = 0; ib_attr->max_ee_init_rd_atom = 0; ib_attr->max_ee = 0; ib_attr->max_rdd = 0; ib_attr->max_mw = dev_attr->max_mw; ib_attr->max_raw_ipv6_qp = 0; ib_attr->max_raw_ethy_qp = dev_attr->max_raw_ethy_qp; ib_attr->max_mcast_grp = 0; ib_attr->max_mcast_qp_attach = 0; ib_attr->max_total_mcast_qp_attach = 0; ib_attr->max_ah = dev_attr->max_ah; ib_attr->max_fmr = dev_attr->max_fmr; ib_attr->max_map_per_fmr = 1; /* ? */ ib_attr->max_srq = dev_attr->max_srq; ib_attr->max_srq_wr = dev_attr->max_srq_wqes; ib_attr->max_srq_sge = dev_attr->max_srq_sges; ib_attr->max_fast_reg_page_list_len = MAX_PBL_LVL_1_PGS; ib_attr->max_pkeys = 1; ib_attr->local_ca_ack_delay = 0; return 0; } int bnxt_re_modify_device(struct ib_device *ibdev, int device_modify_mask, struct ib_device_modify *device_modify) { switch (device_modify_mask) { case IB_DEVICE_MODIFY_SYS_IMAGE_GUID: /* Modify the GUID requires the modification of the GID table */ /* GUID should be made as READ-ONLY */ break; case IB_DEVICE_MODIFY_NODE_DESC: /* Node Desc should be made as READ-ONLY */ break; default: break; } return 0; } static void __to_ib_speed_width(struct net_device *netdev, u8 *speed, u8 *width) { struct ethtool_link_ksettings lksettings; u32 espeed; if (netdev->ethtool_ops && netdev->ethtool_ops->get_link_ksettings) { memset(&lksettings, 0, sizeof(lksettings)); rtnl_lock(); netdev->ethtool_ops->get_link_ksettings(netdev, &lksettings); rtnl_unlock(); espeed = lksettings.base.speed; } else { espeed = SPEED_UNKNOWN; } switch (espeed) { case SPEED_1000: *speed = IB_SPEED_SDR; *width = IB_WIDTH_1X; break; case SPEED_10000: *speed = IB_SPEED_QDR; *width = IB_WIDTH_1X; break; case SPEED_20000: *speed = IB_SPEED_DDR; *width = IB_WIDTH_4X; break; case SPEED_25000: *speed = IB_SPEED_EDR; *width = IB_WIDTH_1X; break; case SPEED_40000: *speed = IB_SPEED_QDR; *width = IB_WIDTH_4X; break; case SPEED_50000: break; default: *speed = IB_SPEED_SDR; *width = IB_WIDTH_1X; break; } } /* Port */ int bnxt_re_query_port(struct ib_device *ibdev, u8 port_num, struct ib_port_attr *port_attr) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; memset(port_attr, 0, sizeof(*port_attr)); if (netif_running(rdev->netdev) && netif_carrier_ok(rdev->netdev)) { port_attr->state = IB_PORT_ACTIVE; port_attr->phys_state = 5; } else { port_attr->state = IB_PORT_DOWN; port_attr->phys_state = 3; } port_attr->max_mtu = IB_MTU_4096; port_attr->active_mtu = iboe_get_mtu(rdev->netdev->mtu); port_attr->gid_tbl_len = dev_attr->max_sgid; port_attr->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_IP_BASED_GIDS; /* Max MSG size set to 2G for now */ port_attr->max_msg_sz = 0x80000000; port_attr->bad_pkey_cntr = 0; port_attr->qkey_viol_cntr = 0; port_attr->pkey_tbl_len = dev_attr->max_pkey; port_attr->lid = 0; port_attr->sm_lid = 0; port_attr->lmc = 0; port_attr->max_vl_num = 4; port_attr->sm_sl = 0; port_attr->subnet_timeout = 0; port_attr->init_type_reply = 0; /* call the underlying netdev's ethtool hooks to query speed settings * for which we acquire rtnl_lock _only_ if it's registered with * IB stack to avoid race in the NETDEV_UNREG path */ if (test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags)) __to_ib_speed_width(rdev->netdev, &port_attr->active_speed, &port_attr->active_width); return 0; } int bnxt_re_modify_port(struct ib_device *ibdev, u8 port_num, int port_modify_mask, struct ib_port_modify *port_modify) { switch (port_modify_mask) { case IB_PORT_SHUTDOWN: break; case IB_PORT_INIT_TYPE: break; case IB_PORT_RESET_QKEY_CNTR: break; default: break; } return 0; } int bnxt_re_get_port_immutable(struct ib_device *ibdev, u8 port_num, struct ib_port_immutable *immutable) { struct ib_port_attr port_attr; if (bnxt_re_query_port(ibdev, port_num, &port_attr)) return -EINVAL; immutable->pkey_tbl_len = port_attr.pkey_tbl_len; immutable->gid_tbl_len = port_attr.gid_tbl_len; immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; immutable->core_cap_flags |= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP; immutable->max_mad_size = IB_MGMT_MAD_SIZE; return 0; } int bnxt_re_query_pkey(struct ib_device *ibdev, u8 port_num, u16 index, u16 *pkey) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); /* Ignore port_num */ memset(pkey, 0, sizeof(*pkey)); return bnxt_qplib_get_pkey(&rdev->qplib_res, &rdev->qplib_res.pkey_tbl, index, pkey); } int bnxt_re_query_gid(struct ib_device *ibdev, u8 port_num, int index, union ib_gid *gid) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); int rc = 0; /* Ignore port_num */ memset(gid, 0, sizeof(*gid)); rc = bnxt_qplib_get_sgid(&rdev->qplib_res, &rdev->qplib_res.sgid_tbl, index, (struct bnxt_qplib_gid *)gid); return rc; } int bnxt_re_del_gid(struct ib_device *ibdev, u8 port_num, unsigned int index, void **context) { int rc = 0; struct bnxt_re_gid_ctx *ctx, **ctx_tbl; struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl; /* Delete the entry from the hardware */ ctx = *context; if (!ctx) return -EINVAL; if (sgid_tbl && sgid_tbl->active) { if (ctx->idx >= sgid_tbl->max) return -EINVAL; ctx->refcnt--; if (!ctx->refcnt) { rc = bnxt_qplib_del_sgid (sgid_tbl, &sgid_tbl->tbl[ctx->idx], true); if (rc) dev_err(rdev_to_dev(rdev), "Failed to remove GID: %#x", rc); ctx_tbl = sgid_tbl->ctx; ctx_tbl[ctx->idx] = NULL; kfree(ctx); } } else { return -EINVAL; } return rc; } int bnxt_re_add_gid(struct ib_device *ibdev, u8 port_num, unsigned int index, const union ib_gid *gid, const struct ib_gid_attr *attr, void **context) { int rc; u32 tbl_idx = 0; u16 vlan_id = 0xFFFF; struct bnxt_re_gid_ctx *ctx, **ctx_tbl; struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); struct bnxt_qplib_sgid_tbl *sgid_tbl = &rdev->qplib_res.sgid_tbl; if ((attr->ndev) && is_vlan_dev(attr->ndev)) vlan_id = vlan_dev_vlan_id(attr->ndev); rc = bnxt_qplib_add_sgid(sgid_tbl, (struct bnxt_qplib_gid *)gid, rdev->qplib_res.netdev->dev_addr, vlan_id, true, &tbl_idx); if (rc == -EALREADY) { ctx_tbl = sgid_tbl->ctx; ctx_tbl[tbl_idx]->refcnt++; *context = ctx_tbl[tbl_idx]; return 0; } if (rc < 0) { dev_err(rdev_to_dev(rdev), "Failed to add GID: %#x", rc); return rc; } ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; ctx_tbl = sgid_tbl->ctx; ctx->idx = tbl_idx; ctx->refcnt = 1; ctx_tbl[tbl_idx] = ctx; return rc; } enum rdma_link_layer bnxt_re_get_link_layer(struct ib_device *ibdev, u8 port_num) { return IB_LINK_LAYER_ETHERNET; } /* Protection Domains */ int bnxt_re_dealloc_pd(struct ib_pd *ib_pd) { struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); struct bnxt_re_dev *rdev = pd->rdev; int rc; if (ib_pd->uobject && pd->dpi.dbr) { struct ib_ucontext *ib_uctx = ib_pd->uobject->context; struct bnxt_re_ucontext *ucntx; /* Free DPI only if this is the first PD allocated by the * application and mark the context dpi as NULL */ ucntx = container_of(ib_uctx, struct bnxt_re_ucontext, ib_uctx); rc = bnxt_qplib_dealloc_dpi(&rdev->qplib_res, &rdev->qplib_res.dpi_tbl, &pd->dpi); if (rc) dev_err(rdev_to_dev(rdev), "Failed to deallocate HW DPI"); /* Don't fail, continue*/ ucntx->dpi = NULL; } rc = bnxt_qplib_dealloc_pd(&rdev->qplib_res, &rdev->qplib_res.pd_tbl, &pd->qplib_pd); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to deallocate HW PD"); return rc; } kfree(pd); return 0; } struct ib_pd *bnxt_re_alloc_pd(struct ib_device *ibdev, struct ib_ucontext *ucontext, struct ib_udata *udata) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); struct bnxt_re_ucontext *ucntx = container_of(ucontext, struct bnxt_re_ucontext, ib_uctx); struct bnxt_re_pd *pd; int rc; pd = kzalloc(sizeof(*pd), GFP_KERNEL); if (!pd) return ERR_PTR(-ENOMEM); pd->rdev = rdev; if (bnxt_qplib_alloc_pd(&rdev->qplib_res.pd_tbl, &pd->qplib_pd)) { dev_err(rdev_to_dev(rdev), "Failed to allocate HW PD"); rc = -ENOMEM; goto fail; } if (udata) { struct bnxt_re_pd_resp resp; if (!ucntx->dpi) { /* Allocate DPI in alloc_pd to avoid failing of * ibv_devinfo and family of application when DPIs * are depleted. */ if (bnxt_qplib_alloc_dpi(&rdev->qplib_res.dpi_tbl, &pd->dpi, ucntx)) { rc = -ENOMEM; goto dbfail; } ucntx->dpi = &pd->dpi; } resp.pdid = pd->qplib_pd.id; /* Still allow mapping this DBR to the new user PD. */ resp.dpi = ucntx->dpi->dpi; resp.dbr = (u64)ucntx->dpi->umdbr; rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to copy user response\n"); goto dbfail; } } return &pd->ib_pd; dbfail: (void)bnxt_qplib_dealloc_pd(&rdev->qplib_res, &rdev->qplib_res.pd_tbl, &pd->qplib_pd); fail: kfree(pd); return ERR_PTR(rc); } /* Address Handles */ int bnxt_re_destroy_ah(struct ib_ah *ib_ah) { struct bnxt_re_ah *ah = container_of(ib_ah, struct bnxt_re_ah, ib_ah); struct bnxt_re_dev *rdev = ah->rdev; int rc; rc = bnxt_qplib_destroy_ah(&rdev->qplib_res, &ah->qplib_ah); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to destroy HW AH"); return rc; } kfree(ah); return 0; } struct ib_ah *bnxt_re_create_ah(struct ib_pd *ib_pd, struct rdma_ah_attr *ah_attr, struct ib_udata *udata) { struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); struct bnxt_re_dev *rdev = pd->rdev; struct bnxt_re_ah *ah; const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr); int rc; u16 vlan_tag; u8 nw_type; struct ib_gid_attr sgid_attr; if (!(rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH)) { dev_err(rdev_to_dev(rdev), "Failed to alloc AH: GRH not set"); return ERR_PTR(-EINVAL); } ah = kzalloc(sizeof(*ah), GFP_ATOMIC); if (!ah) return ERR_PTR(-ENOMEM); ah->rdev = rdev; ah->qplib_ah.pd = &pd->qplib_pd; /* Supply the configuration for the HW */ memcpy(ah->qplib_ah.dgid.data, grh->dgid.raw, sizeof(union ib_gid)); /* * If RoCE V2 is enabled, stack will have two entries for * each GID entry. Avoiding this duplicte entry in HW. Dividing * the GID index by 2 for RoCE V2 */ ah->qplib_ah.sgid_index = grh->sgid_index / 2; ah->qplib_ah.host_sgid_index = grh->sgid_index; ah->qplib_ah.traffic_class = grh->traffic_class; ah->qplib_ah.flow_label = grh->flow_label; ah->qplib_ah.hop_limit = grh->hop_limit; ah->qplib_ah.sl = rdma_ah_get_sl(ah_attr); if (ib_pd->uobject && !rdma_is_multicast_addr((struct in6_addr *) grh->dgid.raw) && !rdma_link_local_addr((struct in6_addr *) grh->dgid.raw)) { union ib_gid sgid; rc = ib_get_cached_gid(&rdev->ibdev, 1, grh->sgid_index, &sgid, &sgid_attr); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to query gid at index %d", grh->sgid_index); goto fail; } if (sgid_attr.ndev) { if (is_vlan_dev(sgid_attr.ndev)) vlan_tag = vlan_dev_vlan_id(sgid_attr.ndev); dev_put(sgid_attr.ndev); } /* Get network header type for this GID */ nw_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid); switch (nw_type) { case RDMA_NETWORK_IPV4: ah->qplib_ah.nw_type = CMDQ_CREATE_AH_TYPE_V2IPV4; break; case RDMA_NETWORK_IPV6: ah->qplib_ah.nw_type = CMDQ_CREATE_AH_TYPE_V2IPV6; break; default: ah->qplib_ah.nw_type = CMDQ_CREATE_AH_TYPE_V1; break; } rc = rdma_addr_find_l2_eth_by_grh(&sgid, &grh->dgid, ah_attr->roce.dmac, &vlan_tag, &sgid_attr.ndev->ifindex, NULL); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to get dmac\n"); goto fail; } } memcpy(ah->qplib_ah.dmac, ah_attr->roce.dmac, ETH_ALEN); rc = bnxt_qplib_create_ah(&rdev->qplib_res, &ah->qplib_ah); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to allocate HW AH"); goto fail; } /* Write AVID to shared page. */ if (ib_pd->uobject) { struct ib_ucontext *ib_uctx = ib_pd->uobject->context; struct bnxt_re_ucontext *uctx; unsigned long flag; u32 *wrptr; uctx = container_of(ib_uctx, struct bnxt_re_ucontext, ib_uctx); spin_lock_irqsave(&uctx->sh_lock, flag); wrptr = (u32 *)(uctx->shpg + BNXT_RE_AVID_OFFT); *wrptr = ah->qplib_ah.id; wmb(); /* make sure cache is updated. */ spin_unlock_irqrestore(&uctx->sh_lock, flag); } return &ah->ib_ah; fail: kfree(ah); return ERR_PTR(rc); } int bnxt_re_modify_ah(struct ib_ah *ib_ah, struct rdma_ah_attr *ah_attr) { return 0; } int bnxt_re_query_ah(struct ib_ah *ib_ah, struct rdma_ah_attr *ah_attr) { struct bnxt_re_ah *ah = container_of(ib_ah, struct bnxt_re_ah, ib_ah); ah_attr->type = ib_ah->type; rdma_ah_set_sl(ah_attr, ah->qplib_ah.sl); memcpy(ah_attr->roce.dmac, ah->qplib_ah.dmac, ETH_ALEN); rdma_ah_set_grh(ah_attr, NULL, 0, ah->qplib_ah.host_sgid_index, 0, ah->qplib_ah.traffic_class); rdma_ah_set_dgid_raw(ah_attr, ah->qplib_ah.dgid.data); rdma_ah_set_port_num(ah_attr, 1); rdma_ah_set_static_rate(ah_attr, 0); return 0; } /* Queue Pairs */ int bnxt_re_destroy_qp(struct ib_qp *ib_qp) { struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); struct bnxt_re_dev *rdev = qp->rdev; int rc; rc = bnxt_qplib_destroy_qp(&rdev->qplib_res, &qp->qplib_qp); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to destroy HW QP"); return rc; } if (ib_qp->qp_type == IB_QPT_GSI && rdev->qp1_sqp) { rc = bnxt_qplib_destroy_ah(&rdev->qplib_res, &rdev->sqp_ah->qplib_ah); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to destroy HW AH for shadow QP"); return rc; } rc = bnxt_qplib_destroy_qp(&rdev->qplib_res, &rdev->qp1_sqp->qplib_qp); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to destroy Shadow QP"); return rc; } mutex_lock(&rdev->qp_lock); list_del(&rdev->qp1_sqp->list); atomic_dec(&rdev->qp_count); mutex_unlock(&rdev->qp_lock); kfree(rdev->sqp_ah); kfree(rdev->qp1_sqp); } if (!IS_ERR_OR_NULL(qp->rumem)) ib_umem_release(qp->rumem); if (!IS_ERR_OR_NULL(qp->sumem)) ib_umem_release(qp->sumem); mutex_lock(&rdev->qp_lock); list_del(&qp->list); atomic_dec(&rdev->qp_count); mutex_unlock(&rdev->qp_lock); kfree(qp); return 0; } static u8 __from_ib_qp_type(enum ib_qp_type type) { switch (type) { case IB_QPT_GSI: return CMDQ_CREATE_QP1_TYPE_GSI; case IB_QPT_RC: return CMDQ_CREATE_QP_TYPE_RC; case IB_QPT_UD: return CMDQ_CREATE_QP_TYPE_UD; default: return IB_QPT_MAX; } } static int bnxt_re_init_user_qp(struct bnxt_re_dev *rdev, struct bnxt_re_pd *pd, struct bnxt_re_qp *qp, struct ib_udata *udata) { struct bnxt_re_qp_req ureq; struct bnxt_qplib_qp *qplib_qp = &qp->qplib_qp; struct ib_umem *umem; int bytes = 0; struct ib_ucontext *context = pd->ib_pd.uobject->context; struct bnxt_re_ucontext *cntx = container_of(context, struct bnxt_re_ucontext, ib_uctx); if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) return -EFAULT; bytes = (qplib_qp->sq.max_wqe * BNXT_QPLIB_MAX_SQE_ENTRY_SIZE); /* Consider mapping PSN search memory only for RC QPs. */ if (qplib_qp->type == CMDQ_CREATE_QP_TYPE_RC) bytes += (qplib_qp->sq.max_wqe * sizeof(struct sq_psn_search)); bytes = PAGE_ALIGN(bytes); umem = ib_umem_get(context, ureq.qpsva, bytes, IB_ACCESS_LOCAL_WRITE, 1); if (IS_ERR(umem)) return PTR_ERR(umem); qp->sumem = umem; qplib_qp->sq.sglist = umem->sg_head.sgl; qplib_qp->sq.nmap = umem->nmap; qplib_qp->qp_handle = ureq.qp_handle; if (!qp->qplib_qp.srq) { bytes = (qplib_qp->rq.max_wqe * BNXT_QPLIB_MAX_RQE_ENTRY_SIZE); bytes = PAGE_ALIGN(bytes); umem = ib_umem_get(context, ureq.qprva, bytes, IB_ACCESS_LOCAL_WRITE, 1); if (IS_ERR(umem)) goto rqfail; qp->rumem = umem; qplib_qp->rq.sglist = umem->sg_head.sgl; qplib_qp->rq.nmap = umem->nmap; } qplib_qp->dpi = cntx->dpi; return 0; rqfail: ib_umem_release(qp->sumem); qp->sumem = NULL; qplib_qp->sq.sglist = NULL; qplib_qp->sq.nmap = 0; return PTR_ERR(umem); } static struct bnxt_re_ah *bnxt_re_create_shadow_qp_ah (struct bnxt_re_pd *pd, struct bnxt_qplib_res *qp1_res, struct bnxt_qplib_qp *qp1_qp) { struct bnxt_re_dev *rdev = pd->rdev; struct bnxt_re_ah *ah; union ib_gid sgid; int rc; ah = kzalloc(sizeof(*ah), GFP_KERNEL); if (!ah) return NULL; memset(ah, 0, sizeof(*ah)); ah->rdev = rdev; ah->qplib_ah.pd = &pd->qplib_pd; rc = bnxt_re_query_gid(&rdev->ibdev, 1, 0, &sgid); if (rc) goto fail; /* supply the dgid data same as sgid */ memcpy(ah->qplib_ah.dgid.data, &sgid.raw, sizeof(union ib_gid)); ah->qplib_ah.sgid_index = 0; ah->qplib_ah.traffic_class = 0; ah->qplib_ah.flow_label = 0; ah->qplib_ah.hop_limit = 1; ah->qplib_ah.sl = 0; /* Have DMAC same as SMAC */ ether_addr_copy(ah->qplib_ah.dmac, rdev->netdev->dev_addr); rc = bnxt_qplib_create_ah(&rdev->qplib_res, &ah->qplib_ah); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to allocate HW AH for Shadow QP"); goto fail; } return ah; fail: kfree(ah); return NULL; } static struct bnxt_re_qp *bnxt_re_create_shadow_qp (struct bnxt_re_pd *pd, struct bnxt_qplib_res *qp1_res, struct bnxt_qplib_qp *qp1_qp) { struct bnxt_re_dev *rdev = pd->rdev; struct bnxt_re_qp *qp; int rc; qp = kzalloc(sizeof(*qp), GFP_KERNEL); if (!qp) return NULL; memset(qp, 0, sizeof(*qp)); qp->rdev = rdev; /* Initialize the shadow QP structure from the QP1 values */ ether_addr_copy(qp->qplib_qp.smac, rdev->netdev->dev_addr); qp->qplib_qp.pd = &pd->qplib_pd; qp->qplib_qp.qp_handle = (u64)(unsigned long)(&qp->qplib_qp); qp->qplib_qp.type = IB_QPT_UD; qp->qplib_qp.max_inline_data = 0; qp->qplib_qp.sig_type = true; /* Shadow QP SQ depth should be same as QP1 RQ depth */ qp->qplib_qp.sq.max_wqe = qp1_qp->rq.max_wqe; qp->qplib_qp.sq.max_sge = 2; qp->qplib_qp.scq = qp1_qp->scq; qp->qplib_qp.rcq = qp1_qp->rcq; qp->qplib_qp.rq.max_wqe = qp1_qp->rq.max_wqe; qp->qplib_qp.rq.max_sge = qp1_qp->rq.max_sge; qp->qplib_qp.mtu = qp1_qp->mtu; qp->qplib_qp.sq_hdr_buf_size = 0; qp->qplib_qp.rq_hdr_buf_size = BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6; qp->qplib_qp.dpi = &rdev->dpi_privileged; rc = bnxt_qplib_create_qp(qp1_res, &qp->qplib_qp); if (rc) goto fail; rdev->sqp_id = qp->qplib_qp.id; spin_lock_init(&qp->sq_lock); INIT_LIST_HEAD(&qp->list); mutex_lock(&rdev->qp_lock); list_add_tail(&qp->list, &rdev->qp_list); atomic_inc(&rdev->qp_count); mutex_unlock(&rdev->qp_lock); return qp; fail: kfree(qp); return NULL; } struct ib_qp *bnxt_re_create_qp(struct ib_pd *ib_pd, struct ib_qp_init_attr *qp_init_attr, struct ib_udata *udata) { struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); struct bnxt_re_dev *rdev = pd->rdev; struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; struct bnxt_re_qp *qp; struct bnxt_re_cq *cq; int rc, entries; if ((qp_init_attr->cap.max_send_wr > dev_attr->max_qp_wqes) || (qp_init_attr->cap.max_recv_wr > dev_attr->max_qp_wqes) || (qp_init_attr->cap.max_send_sge > dev_attr->max_qp_sges) || (qp_init_attr->cap.max_recv_sge > dev_attr->max_qp_sges) || (qp_init_attr->cap.max_inline_data > dev_attr->max_inline_data)) return ERR_PTR(-EINVAL); qp = kzalloc(sizeof(*qp), GFP_KERNEL); if (!qp) return ERR_PTR(-ENOMEM); qp->rdev = rdev; ether_addr_copy(qp->qplib_qp.smac, rdev->netdev->dev_addr); qp->qplib_qp.pd = &pd->qplib_pd; qp->qplib_qp.qp_handle = (u64)(unsigned long)(&qp->qplib_qp); qp->qplib_qp.type = __from_ib_qp_type(qp_init_attr->qp_type); if (qp->qplib_qp.type == IB_QPT_MAX) { dev_err(rdev_to_dev(rdev), "QP type 0x%x not supported", qp->qplib_qp.type); rc = -EINVAL; goto fail; } qp->qplib_qp.max_inline_data = qp_init_attr->cap.max_inline_data; qp->qplib_qp.sig_type = ((qp_init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false); entries = roundup_pow_of_two(qp_init_attr->cap.max_send_wr + 1); qp->qplib_qp.sq.max_wqe = min_t(u32, entries, dev_attr->max_qp_wqes + 1); qp->qplib_qp.sq.max_sge = qp_init_attr->cap.max_send_sge; if (qp->qplib_qp.sq.max_sge > dev_attr->max_qp_sges) qp->qplib_qp.sq.max_sge = dev_attr->max_qp_sges; if (qp_init_attr->send_cq) { cq = container_of(qp_init_attr->send_cq, struct bnxt_re_cq, ib_cq); if (!cq) { dev_err(rdev_to_dev(rdev), "Send CQ not found"); rc = -EINVAL; goto fail; } qp->qplib_qp.scq = &cq->qplib_cq; } if (qp_init_attr->recv_cq) { cq = container_of(qp_init_attr->recv_cq, struct bnxt_re_cq, ib_cq); if (!cq) { dev_err(rdev_to_dev(rdev), "Receive CQ not found"); rc = -EINVAL; goto fail; } qp->qplib_qp.rcq = &cq->qplib_cq; } if (qp_init_attr->srq) { dev_err(rdev_to_dev(rdev), "SRQ not supported"); rc = -ENOTSUPP; goto fail; } else { /* Allocate 1 more than what's provided so posting max doesn't * mean empty */ entries = roundup_pow_of_two(qp_init_attr->cap.max_recv_wr + 1); qp->qplib_qp.rq.max_wqe = min_t(u32, entries, dev_attr->max_qp_wqes + 1); qp->qplib_qp.rq.max_sge = qp_init_attr->cap.max_recv_sge; if (qp->qplib_qp.rq.max_sge > dev_attr->max_qp_sges) qp->qplib_qp.rq.max_sge = dev_attr->max_qp_sges; } qp->qplib_qp.mtu = ib_mtu_enum_to_int(iboe_get_mtu(rdev->netdev->mtu)); if (qp_init_attr->qp_type == IB_QPT_GSI) { qp->qplib_qp.rq.max_sge = dev_attr->max_qp_sges; if (qp->qplib_qp.rq.max_sge > dev_attr->max_qp_sges) qp->qplib_qp.rq.max_sge = dev_attr->max_qp_sges; qp->qplib_qp.sq.max_sge++; if (qp->qplib_qp.sq.max_sge > dev_attr->max_qp_sges) qp->qplib_qp.sq.max_sge = dev_attr->max_qp_sges; qp->qplib_qp.rq_hdr_buf_size = BNXT_QPLIB_MAX_QP1_RQ_HDR_SIZE_V2; qp->qplib_qp.sq_hdr_buf_size = BNXT_QPLIB_MAX_QP1_SQ_HDR_SIZE_V2; qp->qplib_qp.dpi = &rdev->dpi_privileged; rc = bnxt_qplib_create_qp1(&rdev->qplib_res, &qp->qplib_qp); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to create HW QP1"); goto fail; } /* Create a shadow QP to handle the QP1 traffic */ rdev->qp1_sqp = bnxt_re_create_shadow_qp(pd, &rdev->qplib_res, &qp->qplib_qp); if (!rdev->qp1_sqp) { rc = -EINVAL; dev_err(rdev_to_dev(rdev), "Failed to create Shadow QP for QP1"); goto qp_destroy; } rdev->sqp_ah = bnxt_re_create_shadow_qp_ah(pd, &rdev->qplib_res, &qp->qplib_qp); if (!rdev->sqp_ah) { bnxt_qplib_destroy_qp(&rdev->qplib_res, &rdev->qp1_sqp->qplib_qp); rc = -EINVAL; dev_err(rdev_to_dev(rdev), "Failed to create AH entry for ShadowQP"); goto qp_destroy; } } else { qp->qplib_qp.max_rd_atomic = dev_attr->max_qp_rd_atom; qp->qplib_qp.max_dest_rd_atomic = dev_attr->max_qp_init_rd_atom; if (udata) { rc = bnxt_re_init_user_qp(rdev, pd, qp, udata); if (rc) goto fail; } else { qp->qplib_qp.dpi = &rdev->dpi_privileged; } rc = bnxt_qplib_create_qp(&rdev->qplib_res, &qp->qplib_qp); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to create HW QP"); goto fail; } } qp->ib_qp.qp_num = qp->qplib_qp.id; spin_lock_init(&qp->sq_lock); if (udata) { struct bnxt_re_qp_resp resp; resp.qpid = qp->ib_qp.qp_num; resp.rsvd = 0; rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to copy QP udata"); goto qp_destroy; } } INIT_LIST_HEAD(&qp->list); mutex_lock(&rdev->qp_lock); list_add_tail(&qp->list, &rdev->qp_list); atomic_inc(&rdev->qp_count); mutex_unlock(&rdev->qp_lock); return &qp->ib_qp; qp_destroy: bnxt_qplib_destroy_qp(&rdev->qplib_res, &qp->qplib_qp); fail: kfree(qp); return ERR_PTR(rc); } static u8 __from_ib_qp_state(enum ib_qp_state state) { switch (state) { case IB_QPS_RESET: return CMDQ_MODIFY_QP_NEW_STATE_RESET; case IB_QPS_INIT: return CMDQ_MODIFY_QP_NEW_STATE_INIT; case IB_QPS_RTR: return CMDQ_MODIFY_QP_NEW_STATE_RTR; case IB_QPS_RTS: return CMDQ_MODIFY_QP_NEW_STATE_RTS; case IB_QPS_SQD: return CMDQ_MODIFY_QP_NEW_STATE_SQD; case IB_QPS_SQE: return CMDQ_MODIFY_QP_NEW_STATE_SQE; case IB_QPS_ERR: default: return CMDQ_MODIFY_QP_NEW_STATE_ERR; } } static enum ib_qp_state __to_ib_qp_state(u8 state) { switch (state) { case CMDQ_MODIFY_QP_NEW_STATE_RESET: return IB_QPS_RESET; case CMDQ_MODIFY_QP_NEW_STATE_INIT: return IB_QPS_INIT; case CMDQ_MODIFY_QP_NEW_STATE_RTR: return IB_QPS_RTR; case CMDQ_MODIFY_QP_NEW_STATE_RTS: return IB_QPS_RTS; case CMDQ_MODIFY_QP_NEW_STATE_SQD: return IB_QPS_SQD; case CMDQ_MODIFY_QP_NEW_STATE_SQE: return IB_QPS_SQE; case CMDQ_MODIFY_QP_NEW_STATE_ERR: default: return IB_QPS_ERR; } } static u32 __from_ib_mtu(enum ib_mtu mtu) { switch (mtu) { case IB_MTU_256: return CMDQ_MODIFY_QP_PATH_MTU_MTU_256; case IB_MTU_512: return CMDQ_MODIFY_QP_PATH_MTU_MTU_512; case IB_MTU_1024: return CMDQ_MODIFY_QP_PATH_MTU_MTU_1024; case IB_MTU_2048: return CMDQ_MODIFY_QP_PATH_MTU_MTU_2048; case IB_MTU_4096: return CMDQ_MODIFY_QP_PATH_MTU_MTU_4096; default: return CMDQ_MODIFY_QP_PATH_MTU_MTU_2048; } } static enum ib_mtu __to_ib_mtu(u32 mtu) { switch (mtu & CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) { case CMDQ_MODIFY_QP_PATH_MTU_MTU_256: return IB_MTU_256; case CMDQ_MODIFY_QP_PATH_MTU_MTU_512: return IB_MTU_512; case CMDQ_MODIFY_QP_PATH_MTU_MTU_1024: return IB_MTU_1024; case CMDQ_MODIFY_QP_PATH_MTU_MTU_2048: return IB_MTU_2048; case CMDQ_MODIFY_QP_PATH_MTU_MTU_4096: return IB_MTU_4096; default: return IB_MTU_2048; } } static int __from_ib_access_flags(int iflags) { int qflags = 0; if (iflags & IB_ACCESS_LOCAL_WRITE) qflags |= BNXT_QPLIB_ACCESS_LOCAL_WRITE; if (iflags & IB_ACCESS_REMOTE_READ) qflags |= BNXT_QPLIB_ACCESS_REMOTE_READ; if (iflags & IB_ACCESS_REMOTE_WRITE) qflags |= BNXT_QPLIB_ACCESS_REMOTE_WRITE; if (iflags & IB_ACCESS_REMOTE_ATOMIC) qflags |= BNXT_QPLIB_ACCESS_REMOTE_ATOMIC; if (iflags & IB_ACCESS_MW_BIND) qflags |= BNXT_QPLIB_ACCESS_MW_BIND; if (iflags & IB_ZERO_BASED) qflags |= BNXT_QPLIB_ACCESS_ZERO_BASED; if (iflags & IB_ACCESS_ON_DEMAND) qflags |= BNXT_QPLIB_ACCESS_ON_DEMAND; return qflags; }; static enum ib_access_flags __to_ib_access_flags(int qflags) { enum ib_access_flags iflags = 0; if (qflags & BNXT_QPLIB_ACCESS_LOCAL_WRITE) iflags |= IB_ACCESS_LOCAL_WRITE; if (qflags & BNXT_QPLIB_ACCESS_REMOTE_WRITE) iflags |= IB_ACCESS_REMOTE_WRITE; if (qflags & BNXT_QPLIB_ACCESS_REMOTE_READ) iflags |= IB_ACCESS_REMOTE_READ; if (qflags & BNXT_QPLIB_ACCESS_REMOTE_ATOMIC) iflags |= IB_ACCESS_REMOTE_ATOMIC; if (qflags & BNXT_QPLIB_ACCESS_MW_BIND) iflags |= IB_ACCESS_MW_BIND; if (qflags & BNXT_QPLIB_ACCESS_ZERO_BASED) iflags |= IB_ZERO_BASED; if (qflags & BNXT_QPLIB_ACCESS_ON_DEMAND) iflags |= IB_ACCESS_ON_DEMAND; return iflags; }; static int bnxt_re_modify_shadow_qp(struct bnxt_re_dev *rdev, struct bnxt_re_qp *qp1_qp, int qp_attr_mask) { struct bnxt_re_qp *qp = rdev->qp1_sqp; int rc = 0; if (qp_attr_mask & IB_QP_STATE) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_STATE; qp->qplib_qp.state = qp1_qp->qplib_qp.state; } if (qp_attr_mask & IB_QP_PKEY_INDEX) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY; qp->qplib_qp.pkey_index = qp1_qp->qplib_qp.pkey_index; } if (qp_attr_mask & IB_QP_QKEY) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY; /* Using a Random QKEY */ qp->qplib_qp.qkey = 0x81818181; } if (qp_attr_mask & IB_QP_SQ_PSN) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN; qp->qplib_qp.sq.psn = qp1_qp->qplib_qp.sq.psn; } rc = bnxt_qplib_modify_qp(&rdev->qplib_res, &qp->qplib_qp); if (rc) dev_err(rdev_to_dev(rdev), "Failed to modify Shadow QP for QP1"); return rc; } int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_udata *udata) { struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); struct bnxt_re_dev *rdev = qp->rdev; struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; enum ib_qp_state curr_qp_state, new_qp_state; int rc, entries; int status; union ib_gid sgid; struct ib_gid_attr sgid_attr; u8 nw_type; qp->qplib_qp.modify_flags = 0; if (qp_attr_mask & IB_QP_STATE) { curr_qp_state = __to_ib_qp_state(qp->qplib_qp.cur_qp_state); new_qp_state = qp_attr->qp_state; if (!ib_modify_qp_is_ok(curr_qp_state, new_qp_state, ib_qp->qp_type, qp_attr_mask, IB_LINK_LAYER_ETHERNET)) { dev_err(rdev_to_dev(rdev), "Invalid attribute mask: %#x specified ", qp_attr_mask); dev_err(rdev_to_dev(rdev), "for qpn: %#x type: %#x", ib_qp->qp_num, ib_qp->qp_type); dev_err(rdev_to_dev(rdev), "curr_qp_state=0x%x, new_qp_state=0x%x\n", curr_qp_state, new_qp_state); return -EINVAL; } qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_STATE; qp->qplib_qp.state = __from_ib_qp_state(qp_attr->qp_state); } if (qp_attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_EN_SQD_ASYNC_NOTIFY; qp->qplib_qp.en_sqd_async_notify = true; } if (qp_attr_mask & IB_QP_ACCESS_FLAGS) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS; qp->qplib_qp.access = __from_ib_access_flags(qp_attr->qp_access_flags); /* LOCAL_WRITE access must be set to allow RC receive */ qp->qplib_qp.access |= BNXT_QPLIB_ACCESS_LOCAL_WRITE; } if (qp_attr_mask & IB_QP_PKEY_INDEX) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY; qp->qplib_qp.pkey_index = qp_attr->pkey_index; } if (qp_attr_mask & IB_QP_QKEY) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY; qp->qplib_qp.qkey = qp_attr->qkey; } if (qp_attr_mask & IB_QP_AV) { const struct ib_global_route *grh = rdma_ah_read_grh(&qp_attr->ah_attr); qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_DGID | CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL | CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX | CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT | CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS | CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC | CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID; memcpy(qp->qplib_qp.ah.dgid.data, grh->dgid.raw, sizeof(qp->qplib_qp.ah.dgid.data)); qp->qplib_qp.ah.flow_label = grh->flow_label; /* If RoCE V2 is enabled, stack will have two entries for * each GID entry. Avoiding this duplicte entry in HW. Dividing * the GID index by 2 for RoCE V2 */ qp->qplib_qp.ah.sgid_index = grh->sgid_index / 2; qp->qplib_qp.ah.host_sgid_index = grh->sgid_index; qp->qplib_qp.ah.hop_limit = grh->hop_limit; qp->qplib_qp.ah.traffic_class = grh->traffic_class; qp->qplib_qp.ah.sl = rdma_ah_get_sl(&qp_attr->ah_attr); ether_addr_copy(qp->qplib_qp.ah.dmac, qp_attr->ah_attr.roce.dmac); status = ib_get_cached_gid(&rdev->ibdev, 1, grh->sgid_index, &sgid, &sgid_attr); if (!status && sgid_attr.ndev) { memcpy(qp->qplib_qp.smac, sgid_attr.ndev->dev_addr, ETH_ALEN); dev_put(sgid_attr.ndev); nw_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid); switch (nw_type) { case RDMA_NETWORK_IPV4: qp->qplib_qp.nw_type = CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV2_IPV4; break; case RDMA_NETWORK_IPV6: qp->qplib_qp.nw_type = CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV2_IPV6; break; default: qp->qplib_qp.nw_type = CMDQ_MODIFY_QP_NETWORK_TYPE_ROCEV1; break; } } } if (qp_attr_mask & IB_QP_PATH_MTU) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU; qp->qplib_qp.path_mtu = __from_ib_mtu(qp_attr->path_mtu); } else if (qp_attr->qp_state == IB_QPS_RTR) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU; qp->qplib_qp.path_mtu = __from_ib_mtu(iboe_get_mtu(rdev->netdev->mtu)); } if (qp_attr_mask & IB_QP_TIMEOUT) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT; qp->qplib_qp.timeout = qp_attr->timeout; } if (qp_attr_mask & IB_QP_RETRY_CNT) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT; qp->qplib_qp.retry_cnt = qp_attr->retry_cnt; } if (qp_attr_mask & IB_QP_RNR_RETRY) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY; qp->qplib_qp.rnr_retry = qp_attr->rnr_retry; } if (qp_attr_mask & IB_QP_MIN_RNR_TIMER) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER; qp->qplib_qp.min_rnr_timer = qp_attr->min_rnr_timer; } if (qp_attr_mask & IB_QP_RQ_PSN) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN; qp->qplib_qp.rq.psn = qp_attr->rq_psn; } if (qp_attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC; qp->qplib_qp.max_rd_atomic = qp_attr->max_rd_atomic; } if (qp_attr_mask & IB_QP_SQ_PSN) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN; qp->qplib_qp.sq.psn = qp_attr->sq_psn; } if (qp_attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC; qp->qplib_qp.max_dest_rd_atomic = qp_attr->max_dest_rd_atomic; } if (qp_attr_mask & IB_QP_CAP) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_SQ_SIZE | CMDQ_MODIFY_QP_MODIFY_MASK_RQ_SIZE | CMDQ_MODIFY_QP_MODIFY_MASK_SQ_SGE | CMDQ_MODIFY_QP_MODIFY_MASK_RQ_SGE | CMDQ_MODIFY_QP_MODIFY_MASK_MAX_INLINE_DATA; if ((qp_attr->cap.max_send_wr >= dev_attr->max_qp_wqes) || (qp_attr->cap.max_recv_wr >= dev_attr->max_qp_wqes) || (qp_attr->cap.max_send_sge >= dev_attr->max_qp_sges) || (qp_attr->cap.max_recv_sge >= dev_attr->max_qp_sges) || (qp_attr->cap.max_inline_data >= dev_attr->max_inline_data)) { dev_err(rdev_to_dev(rdev), "Create QP failed - max exceeded"); return -EINVAL; } entries = roundup_pow_of_two(qp_attr->cap.max_send_wr); qp->qplib_qp.sq.max_wqe = min_t(u32, entries, dev_attr->max_qp_wqes + 1); qp->qplib_qp.sq.max_sge = qp_attr->cap.max_send_sge; if (qp->qplib_qp.rq.max_wqe) { entries = roundup_pow_of_two(qp_attr->cap.max_recv_wr); qp->qplib_qp.rq.max_wqe = min_t(u32, entries, dev_attr->max_qp_wqes + 1); qp->qplib_qp.rq.max_sge = qp_attr->cap.max_recv_sge; } else { /* SRQ was used prior, just ignore the RQ caps */ } } if (qp_attr_mask & IB_QP_DEST_QPN) { qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID; qp->qplib_qp.dest_qpn = qp_attr->dest_qp_num; } rc = bnxt_qplib_modify_qp(&rdev->qplib_res, &qp->qplib_qp); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to modify HW QP"); return rc; } if (ib_qp->qp_type == IB_QPT_GSI && rdev->qp1_sqp) rc = bnxt_re_modify_shadow_qp(rdev, qp, qp_attr_mask); return rc; } int bnxt_re_query_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr) { struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); struct bnxt_re_dev *rdev = qp->rdev; struct bnxt_qplib_qp qplib_qp; int rc; memset(&qplib_qp, 0, sizeof(struct bnxt_qplib_qp)); qplib_qp.id = qp->qplib_qp.id; qplib_qp.ah.host_sgid_index = qp->qplib_qp.ah.host_sgid_index; rc = bnxt_qplib_query_qp(&rdev->qplib_res, &qplib_qp); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to query HW QP"); return rc; } qp_attr->qp_state = __to_ib_qp_state(qplib_qp.state); qp_attr->en_sqd_async_notify = qplib_qp.en_sqd_async_notify ? 1 : 0; qp_attr->qp_access_flags = __to_ib_access_flags(qplib_qp.access); qp_attr->pkey_index = qplib_qp.pkey_index; qp_attr->qkey = qplib_qp.qkey; qp_attr->ah_attr.type = RDMA_AH_ATTR_TYPE_ROCE; rdma_ah_set_grh(&qp_attr->ah_attr, NULL, qplib_qp.ah.flow_label, qplib_qp.ah.host_sgid_index, qplib_qp.ah.hop_limit, qplib_qp.ah.traffic_class); rdma_ah_set_dgid_raw(&qp_attr->ah_attr, qplib_qp.ah.dgid.data); rdma_ah_set_sl(&qp_attr->ah_attr, qplib_qp.ah.sl); ether_addr_copy(qp_attr->ah_attr.roce.dmac, qplib_qp.ah.dmac); qp_attr->path_mtu = __to_ib_mtu(qplib_qp.path_mtu); qp_attr->timeout = qplib_qp.timeout; qp_attr->retry_cnt = qplib_qp.retry_cnt; qp_attr->rnr_retry = qplib_qp.rnr_retry; qp_attr->min_rnr_timer = qplib_qp.min_rnr_timer; qp_attr->rq_psn = qplib_qp.rq.psn; qp_attr->max_rd_atomic = qplib_qp.max_rd_atomic; qp_attr->sq_psn = qplib_qp.sq.psn; qp_attr->max_dest_rd_atomic = qplib_qp.max_dest_rd_atomic; qp_init_attr->sq_sig_type = qplib_qp.sig_type ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; qp_attr->dest_qp_num = qplib_qp.dest_qpn; qp_attr->cap.max_send_wr = qp->qplib_qp.sq.max_wqe; qp_attr->cap.max_send_sge = qp->qplib_qp.sq.max_sge; qp_attr->cap.max_recv_wr = qp->qplib_qp.rq.max_wqe; qp_attr->cap.max_recv_sge = qp->qplib_qp.rq.max_sge; qp_attr->cap.max_inline_data = qp->qplib_qp.max_inline_data; qp_init_attr->cap = qp_attr->cap; return 0; } /* Routine for sending QP1 packets for RoCE V1 an V2 */ static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp, struct ib_send_wr *wr, struct bnxt_qplib_swqe *wqe, int payload_size) { struct ib_device *ibdev = &qp->rdev->ibdev; struct bnxt_re_ah *ah = container_of(ud_wr(wr)->ah, struct bnxt_re_ah, ib_ah); struct bnxt_qplib_ah *qplib_ah = &ah->qplib_ah; struct bnxt_qplib_sge sge; union ib_gid sgid; u8 nw_type; u16 ether_type; struct ib_gid_attr sgid_attr; union ib_gid dgid; bool is_eth = false; bool is_vlan = false; bool is_grh = false; bool is_udp = false; u8 ip_version = 0; u16 vlan_id = 0xFFFF; void *buf; int i, rc = 0, size; memset(&qp->qp1_hdr, 0, sizeof(qp->qp1_hdr)); rc = ib_get_cached_gid(ibdev, 1, qplib_ah->host_sgid_index, &sgid, &sgid_attr); if (rc) { dev_err(rdev_to_dev(qp->rdev), "Failed to query gid at index %d", qplib_ah->host_sgid_index); return rc; } if (sgid_attr.ndev) { if (is_vlan_dev(sgid_attr.ndev)) vlan_id = vlan_dev_vlan_id(sgid_attr.ndev); dev_put(sgid_attr.ndev); } /* Get network header type for this GID */ nw_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid); switch (nw_type) { case RDMA_NETWORK_IPV4: nw_type = BNXT_RE_ROCEV2_IPV4_PACKET; break; case RDMA_NETWORK_IPV6: nw_type = BNXT_RE_ROCEV2_IPV6_PACKET; break; default: nw_type = BNXT_RE_ROCE_V1_PACKET; break; } memcpy(&dgid.raw, &qplib_ah->dgid, 16); is_udp = sgid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP; if (is_udp) { if (ipv6_addr_v4mapped((struct in6_addr *)&sgid)) { ip_version = 4; ether_type = ETH_P_IP; } else { ip_version = 6; ether_type = ETH_P_IPV6; } is_grh = false; } else { ether_type = ETH_P_IBOE; is_grh = true; } is_eth = true; is_vlan = (vlan_id && (vlan_id < 0x1000)) ? true : false; ib_ud_header_init(payload_size, !is_eth, is_eth, is_vlan, is_grh, ip_version, is_udp, 0, &qp->qp1_hdr); /* ETH */ ether_addr_copy(qp->qp1_hdr.eth.dmac_h, ah->qplib_ah.dmac); ether_addr_copy(qp->qp1_hdr.eth.smac_h, qp->qplib_qp.smac); /* For vlan, check the sgid for vlan existence */ if (!is_vlan) { qp->qp1_hdr.eth.type = cpu_to_be16(ether_type); } else { qp->qp1_hdr.vlan.type = cpu_to_be16(ether_type); qp->qp1_hdr.vlan.tag = cpu_to_be16(vlan_id); } if (is_grh || (ip_version == 6)) { memcpy(qp->qp1_hdr.grh.source_gid.raw, sgid.raw, sizeof(sgid)); memcpy(qp->qp1_hdr.grh.destination_gid.raw, qplib_ah->dgid.data, sizeof(sgid)); qp->qp1_hdr.grh.hop_limit = qplib_ah->hop_limit; } if (ip_version == 4) { qp->qp1_hdr.ip4.tos = 0; qp->qp1_hdr.ip4.id = 0; qp->qp1_hdr.ip4.frag_off = htons(IP_DF); qp->qp1_hdr.ip4.ttl = qplib_ah->hop_limit; memcpy(&qp->qp1_hdr.ip4.saddr, sgid.raw + 12, 4); memcpy(&qp->qp1_hdr.ip4.daddr, qplib_ah->dgid.data + 12, 4); qp->qp1_hdr.ip4.check = ib_ud_ip4_csum(&qp->qp1_hdr); } if (is_udp) { qp->qp1_hdr.udp.dport = htons(ROCE_V2_UDP_DPORT); qp->qp1_hdr.udp.sport = htons(0x8CD1); qp->qp1_hdr.udp.csum = 0; } /* BTH */ if (wr->opcode == IB_WR_SEND_WITH_IMM) { qp->qp1_hdr.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE; qp->qp1_hdr.immediate_present = 1; } else { qp->qp1_hdr.bth.opcode = IB_OPCODE_UD_SEND_ONLY; } if (wr->send_flags & IB_SEND_SOLICITED) qp->qp1_hdr.bth.solicited_event = 1; /* pad_count */ qp->qp1_hdr.bth.pad_count = (4 - payload_size) & 3; /* P_key for QP1 is for all members */ qp->qp1_hdr.bth.pkey = cpu_to_be16(0xFFFF); qp->qp1_hdr.bth.destination_qpn = IB_QP1; qp->qp1_hdr.bth.ack_req = 0; qp->send_psn++; qp->send_psn &= BTH_PSN_MASK; qp->qp1_hdr.bth.psn = cpu_to_be32(qp->send_psn); /* DETH */ /* Use the priviledged Q_Key for QP1 */ qp->qp1_hdr.deth.qkey = cpu_to_be32(IB_QP1_QKEY); qp->qp1_hdr.deth.source_qpn = IB_QP1; /* Pack the QP1 to the transmit buffer */ buf = bnxt_qplib_get_qp1_sq_buf(&qp->qplib_qp, &sge); if (buf) { size = ib_ud_header_pack(&qp->qp1_hdr, buf); for (i = wqe->num_sge; i; i--) { wqe->sg_list[i].addr = wqe->sg_list[i - 1].addr; wqe->sg_list[i].lkey = wqe->sg_list[i - 1].lkey; wqe->sg_list[i].size = wqe->sg_list[i - 1].size; } /* * Max Header buf size for IPV6 RoCE V2 is 86, * which is same as the QP1 SQ header buffer. * Header buf size for IPV4 RoCE V2 can be 66. * ETH(14) + VLAN(4)+ IP(20) + UDP (8) + BTH(20). * Subtract 20 bytes from QP1 SQ header buf size */ if (is_udp && ip_version == 4) sge.size -= 20; /* * Max Header buf size for RoCE V1 is 78. * ETH(14) + VLAN(4) + GRH(40) + BTH(20). * Subtract 8 bytes from QP1 SQ header buf size */ if (!is_udp) sge.size -= 8; /* Subtract 4 bytes for non vlan packets */ if (!is_vlan) sge.size -= 4; wqe->sg_list[0].addr = sge.addr; wqe->sg_list[0].lkey = sge.lkey; wqe->sg_list[0].size = sge.size; wqe->num_sge++; } else { dev_err(rdev_to_dev(qp->rdev), "QP1 buffer is empty!"); rc = -ENOMEM; } return rc; } /* For the MAD layer, it only provides the recv SGE the size of * ib_grh + MAD datagram. No Ethernet headers, Ethertype, BTH, DETH, * nor RoCE iCRC. The Cu+ solution must provide buffer for the entire * receive packet (334 bytes) with no VLAN and then copy the GRH * and the MAD datagram out to the provided SGE. */ static int bnxt_re_build_qp1_shadow_qp_recv(struct bnxt_re_qp *qp, struct ib_recv_wr *wr, struct bnxt_qplib_swqe *wqe, int payload_size) { struct bnxt_qplib_sge ref, sge; u32 rq_prod_index; struct bnxt_re_sqp_entries *sqp_entry; rq_prod_index = bnxt_qplib_get_rq_prod_index(&qp->qplib_qp); if (!bnxt_qplib_get_qp1_rq_buf(&qp->qplib_qp, &sge)) return -ENOMEM; /* Create 1 SGE to receive the entire * ethernet packet */ /* Save the reference from ULP */ ref.addr = wqe->sg_list[0].addr; ref.lkey = wqe->sg_list[0].lkey; ref.size = wqe->sg_list[0].size; sqp_entry = &qp->rdev->sqp_tbl[rq_prod_index]; /* SGE 1 */ wqe->sg_list[0].addr = sge.addr; wqe->sg_list[0].lkey = sge.lkey; wqe->sg_list[0].size = BNXT_QPLIB_MAX_QP1_RQ_HDR_SIZE_V2; sge.size -= wqe->sg_list[0].size; sqp_entry->sge.addr = ref.addr; sqp_entry->sge.lkey = ref.lkey; sqp_entry->sge.size = ref.size; /* Store the wrid for reporting completion */ sqp_entry->wrid = wqe->wr_id; /* change the wqe->wrid to table index */ wqe->wr_id = rq_prod_index; return 0; } static int is_ud_qp(struct bnxt_re_qp *qp) { return qp->qplib_qp.type == CMDQ_CREATE_QP_TYPE_UD; } static int bnxt_re_build_send_wqe(struct bnxt_re_qp *qp, struct ib_send_wr *wr, struct bnxt_qplib_swqe *wqe) { struct bnxt_re_ah *ah = NULL; if (is_ud_qp(qp)) { ah = container_of(ud_wr(wr)->ah, struct bnxt_re_ah, ib_ah); wqe->send.q_key = ud_wr(wr)->remote_qkey; wqe->send.dst_qp = ud_wr(wr)->remote_qpn; wqe->send.avid = ah->qplib_ah.id; } switch (wr->opcode) { case IB_WR_SEND: wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND; break; case IB_WR_SEND_WITH_IMM: wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM; wqe->send.imm_data = wr->ex.imm_data; break; case IB_WR_SEND_WITH_INV: wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV; wqe->send.inv_key = wr->ex.invalidate_rkey; break; default: return -EINVAL; } if (wr->send_flags & IB_SEND_SIGNALED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; if (wr->send_flags & IB_SEND_FENCE) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; if (wr->send_flags & IB_SEND_SOLICITED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; if (wr->send_flags & IB_SEND_INLINE) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_INLINE; return 0; } static int bnxt_re_build_rdma_wqe(struct ib_send_wr *wr, struct bnxt_qplib_swqe *wqe) { switch (wr->opcode) { case IB_WR_RDMA_WRITE: wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE; break; case IB_WR_RDMA_WRITE_WITH_IMM: wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM; wqe->rdma.imm_data = wr->ex.imm_data; break; case IB_WR_RDMA_READ: wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_READ; wqe->rdma.inv_key = wr->ex.invalidate_rkey; break; default: return -EINVAL; } wqe->rdma.remote_va = rdma_wr(wr)->remote_addr; wqe->rdma.r_key = rdma_wr(wr)->rkey; if (wr->send_flags & IB_SEND_SIGNALED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; if (wr->send_flags & IB_SEND_FENCE) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; if (wr->send_flags & IB_SEND_SOLICITED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; if (wr->send_flags & IB_SEND_INLINE) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_INLINE; return 0; } static int bnxt_re_build_atomic_wqe(struct ib_send_wr *wr, struct bnxt_qplib_swqe *wqe) { switch (wr->opcode) { case IB_WR_ATOMIC_CMP_AND_SWP: wqe->type = BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP; wqe->atomic.swap_data = atomic_wr(wr)->swap; break; case IB_WR_ATOMIC_FETCH_AND_ADD: wqe->type = BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD; wqe->atomic.cmp_data = atomic_wr(wr)->compare_add; break; default: return -EINVAL; } wqe->atomic.remote_va = atomic_wr(wr)->remote_addr; wqe->atomic.r_key = atomic_wr(wr)->rkey; if (wr->send_flags & IB_SEND_SIGNALED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; if (wr->send_flags & IB_SEND_FENCE) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; if (wr->send_flags & IB_SEND_SOLICITED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; return 0; } static int bnxt_re_build_inv_wqe(struct ib_send_wr *wr, struct bnxt_qplib_swqe *wqe) { wqe->type = BNXT_QPLIB_SWQE_TYPE_LOCAL_INV; wqe->local_inv.inv_l_key = wr->ex.invalidate_rkey; if (wr->send_flags & IB_SEND_SIGNALED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; if (wr->send_flags & IB_SEND_FENCE) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; if (wr->send_flags & IB_SEND_SOLICITED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT; return 0; } static int bnxt_re_build_reg_wqe(struct ib_reg_wr *wr, struct bnxt_qplib_swqe *wqe) { struct bnxt_re_mr *mr = container_of(wr->mr, struct bnxt_re_mr, ib_mr); struct bnxt_qplib_frpl *qplib_frpl = &mr->qplib_frpl; int access = wr->access; wqe->frmr.pbl_ptr = (__le64 *)qplib_frpl->hwq.pbl_ptr[0]; wqe->frmr.pbl_dma_ptr = qplib_frpl->hwq.pbl_dma_ptr[0]; wqe->frmr.page_list = mr->pages; wqe->frmr.page_list_len = mr->npages; wqe->frmr.levels = qplib_frpl->hwq.level + 1; wqe->type = BNXT_QPLIB_SWQE_TYPE_REG_MR; if (wr->wr.send_flags & IB_SEND_FENCE) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE; if (wr->wr.send_flags & IB_SEND_SIGNALED) wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP; if (access & IB_ACCESS_LOCAL_WRITE) wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE; if (access & IB_ACCESS_REMOTE_READ) wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_READ; if (access & IB_ACCESS_REMOTE_WRITE) wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_WRITE; if (access & IB_ACCESS_REMOTE_ATOMIC) wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_REMOTE_ATOMIC; if (access & IB_ACCESS_MW_BIND) wqe->frmr.access_cntl |= SQ_FR_PMR_ACCESS_CNTL_WINDOW_BIND; wqe->frmr.l_key = wr->key; wqe->frmr.length = wr->mr->length; wqe->frmr.pbl_pg_sz_log = (wr->mr->page_size >> PAGE_SHIFT_4K) - 1; wqe->frmr.va = wr->mr->iova; return 0; } static int bnxt_re_copy_inline_data(struct bnxt_re_dev *rdev, struct ib_send_wr *wr, struct bnxt_qplib_swqe *wqe) { /* Copy the inline data to the data field */ u8 *in_data; u32 i, sge_len; void *sge_addr; in_data = wqe->inline_data; for (i = 0; i < wr->num_sge; i++) { sge_addr = (void *)(unsigned long) wr->sg_list[i].addr; sge_len = wr->sg_list[i].length; if ((sge_len + wqe->inline_len) > BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH) { dev_err(rdev_to_dev(rdev), "Inline data size requested > supported value"); return -EINVAL; } sge_len = wr->sg_list[i].length; memcpy(in_data, sge_addr, sge_len); in_data += wr->sg_list[i].length; wqe->inline_len += wr->sg_list[i].length; } return wqe->inline_len; } static int bnxt_re_copy_wr_payload(struct bnxt_re_dev *rdev, struct ib_send_wr *wr, struct bnxt_qplib_swqe *wqe) { int payload_sz = 0; if (wr->send_flags & IB_SEND_INLINE) payload_sz = bnxt_re_copy_inline_data(rdev, wr, wqe); else payload_sz = bnxt_re_build_sgl(wr->sg_list, wqe->sg_list, wqe->num_sge); return payload_sz; } static int bnxt_re_post_send_shadow_qp(struct bnxt_re_dev *rdev, struct bnxt_re_qp *qp, struct ib_send_wr *wr) { struct bnxt_qplib_swqe wqe; int rc = 0, payload_sz = 0; unsigned long flags; spin_lock_irqsave(&qp->sq_lock, flags); memset(&wqe, 0, sizeof(wqe)); while (wr) { /* House keeping */ memset(&wqe, 0, sizeof(wqe)); /* Common */ wqe.num_sge = wr->num_sge; if (wr->num_sge > qp->qplib_qp.sq.max_sge) { dev_err(rdev_to_dev(rdev), "Limit exceeded for Send SGEs"); rc = -EINVAL; goto bad; } payload_sz = bnxt_re_copy_wr_payload(qp->rdev, wr, &wqe); if (payload_sz < 0) { rc = -EINVAL; goto bad; } wqe.wr_id = wr->wr_id; wqe.type = BNXT_QPLIB_SWQE_TYPE_SEND; rc = bnxt_re_build_send_wqe(qp, wr, &wqe); if (!rc) rc = bnxt_qplib_post_send(&qp->qplib_qp, &wqe); bad: if (rc) { dev_err(rdev_to_dev(rdev), "Post send failed opcode = %#x rc = %d", wr->opcode, rc); break; } wr = wr->next; } bnxt_qplib_post_send_db(&qp->qplib_qp); spin_unlock_irqrestore(&qp->sq_lock, flags); return rc; } int bnxt_re_post_send(struct ib_qp *ib_qp, struct ib_send_wr *wr, struct ib_send_wr **bad_wr) { struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); struct bnxt_qplib_swqe wqe; int rc = 0, payload_sz = 0; unsigned long flags; spin_lock_irqsave(&qp->sq_lock, flags); while (wr) { /* House keeping */ memset(&wqe, 0, sizeof(wqe)); /* Common */ wqe.num_sge = wr->num_sge; if (wr->num_sge > qp->qplib_qp.sq.max_sge) { dev_err(rdev_to_dev(qp->rdev), "Limit exceeded for Send SGEs"); rc = -EINVAL; goto bad; } payload_sz = bnxt_re_copy_wr_payload(qp->rdev, wr, &wqe); if (payload_sz < 0) { rc = -EINVAL; goto bad; } wqe.wr_id = wr->wr_id; switch (wr->opcode) { case IB_WR_SEND: case IB_WR_SEND_WITH_IMM: if (ib_qp->qp_type == IB_QPT_GSI) { rc = bnxt_re_build_qp1_send_v2(qp, wr, &wqe, payload_sz); if (rc) goto bad; wqe.rawqp1.lflags |= SQ_SEND_RAWETH_QP1_LFLAGS_ROCE_CRC; } switch (wr->send_flags) { case IB_SEND_IP_CSUM: wqe.rawqp1.lflags |= SQ_SEND_RAWETH_QP1_LFLAGS_IP_CHKSUM; break; default: break; } /* Fall thru to build the wqe */ case IB_WR_SEND_WITH_INV: rc = bnxt_re_build_send_wqe(qp, wr, &wqe); break; case IB_WR_RDMA_WRITE: case IB_WR_RDMA_WRITE_WITH_IMM: case IB_WR_RDMA_READ: rc = bnxt_re_build_rdma_wqe(wr, &wqe); break; case IB_WR_ATOMIC_CMP_AND_SWP: case IB_WR_ATOMIC_FETCH_AND_ADD: rc = bnxt_re_build_atomic_wqe(wr, &wqe); break; case IB_WR_RDMA_READ_WITH_INV: dev_err(rdev_to_dev(qp->rdev), "RDMA Read with Invalidate is not supported"); rc = -EINVAL; goto bad; case IB_WR_LOCAL_INV: rc = bnxt_re_build_inv_wqe(wr, &wqe); break; case IB_WR_REG_MR: rc = bnxt_re_build_reg_wqe(reg_wr(wr), &wqe); break; default: /* Unsupported WRs */ dev_err(rdev_to_dev(qp->rdev), "WR (%#x) is not supported", wr->opcode); rc = -EINVAL; goto bad; } if (!rc) rc = bnxt_qplib_post_send(&qp->qplib_qp, &wqe); bad: if (rc) { dev_err(rdev_to_dev(qp->rdev), "post_send failed op:%#x qps = %#x rc = %d\n", wr->opcode, qp->qplib_qp.state, rc); *bad_wr = wr; break; } wr = wr->next; } bnxt_qplib_post_send_db(&qp->qplib_qp); spin_unlock_irqrestore(&qp->sq_lock, flags); return rc; } static int bnxt_re_post_recv_shadow_qp(struct bnxt_re_dev *rdev, struct bnxt_re_qp *qp, struct ib_recv_wr *wr) { struct bnxt_qplib_swqe wqe; int rc = 0, payload_sz = 0; memset(&wqe, 0, sizeof(wqe)); while (wr) { /* House keeping */ memset(&wqe, 0, sizeof(wqe)); /* Common */ wqe.num_sge = wr->num_sge; if (wr->num_sge > qp->qplib_qp.rq.max_sge) { dev_err(rdev_to_dev(rdev), "Limit exceeded for Receive SGEs"); rc = -EINVAL; break; } payload_sz = bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, wr->num_sge); wqe.wr_id = wr->wr_id; wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; rc = bnxt_qplib_post_recv(&qp->qplib_qp, &wqe); if (rc) break; wr = wr->next; } if (!rc) bnxt_qplib_post_recv_db(&qp->qplib_qp); return rc; } int bnxt_re_post_recv(struct ib_qp *ib_qp, struct ib_recv_wr *wr, struct ib_recv_wr **bad_wr) { struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp); struct bnxt_qplib_swqe wqe; int rc = 0, payload_sz = 0; while (wr) { /* House keeping */ memset(&wqe, 0, sizeof(wqe)); /* Common */ wqe.num_sge = wr->num_sge; if (wr->num_sge > qp->qplib_qp.rq.max_sge) { dev_err(rdev_to_dev(qp->rdev), "Limit exceeded for Receive SGEs"); rc = -EINVAL; *bad_wr = wr; break; } payload_sz = bnxt_re_build_sgl(wr->sg_list, wqe.sg_list, wr->num_sge); wqe.wr_id = wr->wr_id; wqe.type = BNXT_QPLIB_SWQE_TYPE_RECV; if (ib_qp->qp_type == IB_QPT_GSI) rc = bnxt_re_build_qp1_shadow_qp_recv(qp, wr, &wqe, payload_sz); if (!rc) rc = bnxt_qplib_post_recv(&qp->qplib_qp, &wqe); if (rc) { *bad_wr = wr; break; } wr = wr->next; } bnxt_qplib_post_recv_db(&qp->qplib_qp); return rc; } /* Completion Queues */ int bnxt_re_destroy_cq(struct ib_cq *ib_cq) { struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); struct bnxt_re_dev *rdev = cq->rdev; int rc; rc = bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to destroy HW CQ"); return rc; } if (!IS_ERR_OR_NULL(cq->umem)) ib_umem_release(cq->umem); if (cq) { kfree(cq->cql); kfree(cq); } atomic_dec(&rdev->cq_count); rdev->nq.budget--; return 0; } struct ib_cq *bnxt_re_create_cq(struct ib_device *ibdev, const struct ib_cq_init_attr *attr, struct ib_ucontext *context, struct ib_udata *udata) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; struct bnxt_re_cq *cq = NULL; int rc, entries; int cqe = attr->cqe; /* Validate CQ fields */ if (cqe < 1 || cqe > dev_attr->max_cq_wqes) { dev_err(rdev_to_dev(rdev), "Failed to create CQ -max exceeded"); return ERR_PTR(-EINVAL); } cq = kzalloc(sizeof(*cq), GFP_KERNEL); if (!cq) return ERR_PTR(-ENOMEM); cq->rdev = rdev; cq->qplib_cq.cq_handle = (u64)(unsigned long)(&cq->qplib_cq); entries = roundup_pow_of_two(cqe + 1); if (entries > dev_attr->max_cq_wqes + 1) entries = dev_attr->max_cq_wqes + 1; if (context) { struct bnxt_re_cq_req req; struct bnxt_re_ucontext *uctx = container_of (context, struct bnxt_re_ucontext, ib_uctx); if (ib_copy_from_udata(&req, udata, sizeof(req))) { rc = -EFAULT; goto fail; } cq->umem = ib_umem_get(context, req.cq_va, entries * sizeof(struct cq_base), IB_ACCESS_LOCAL_WRITE, 1); if (IS_ERR(cq->umem)) { rc = PTR_ERR(cq->umem); goto fail; } cq->qplib_cq.sghead = cq->umem->sg_head.sgl; cq->qplib_cq.nmap = cq->umem->nmap; cq->qplib_cq.dpi = uctx->dpi; } else { cq->max_cql = min_t(u32, entries, MAX_CQL_PER_POLL); cq->cql = kcalloc(cq->max_cql, sizeof(struct bnxt_qplib_cqe), GFP_KERNEL); if (!cq->cql) { rc = -ENOMEM; goto fail; } cq->qplib_cq.dpi = &rdev->dpi_privileged; cq->qplib_cq.sghead = NULL; cq->qplib_cq.nmap = 0; } cq->qplib_cq.max_wqe = entries; cq->qplib_cq.cnq_hw_ring_id = rdev->nq.ring_id; rc = bnxt_qplib_create_cq(&rdev->qplib_res, &cq->qplib_cq); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to create HW CQ"); goto fail; } cq->ib_cq.cqe = entries; cq->cq_period = cq->qplib_cq.period; rdev->nq.budget++; atomic_inc(&rdev->cq_count); if (context) { struct bnxt_re_cq_resp resp; resp.cqid = cq->qplib_cq.id; resp.tail = cq->qplib_cq.hwq.cons; resp.phase = cq->qplib_cq.period; resp.rsvd = 0; rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to copy CQ udata"); bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq); goto c2fail; } } return &cq->ib_cq; c2fail: if (context) ib_umem_release(cq->umem); fail: kfree(cq->cql); kfree(cq); return ERR_PTR(rc); } static u8 __req_to_ib_wc_status(u8 qstatus) { switch (qstatus) { case CQ_REQ_STATUS_OK: return IB_WC_SUCCESS; case CQ_REQ_STATUS_BAD_RESPONSE_ERR: return IB_WC_BAD_RESP_ERR; case CQ_REQ_STATUS_LOCAL_LENGTH_ERR: return IB_WC_LOC_LEN_ERR; case CQ_REQ_STATUS_LOCAL_QP_OPERATION_ERR: return IB_WC_LOC_QP_OP_ERR; case CQ_REQ_STATUS_LOCAL_PROTECTION_ERR: return IB_WC_LOC_PROT_ERR; case CQ_REQ_STATUS_MEMORY_MGT_OPERATION_ERR: return IB_WC_GENERAL_ERR; case CQ_REQ_STATUS_REMOTE_INVALID_REQUEST_ERR: return IB_WC_REM_INV_REQ_ERR; case CQ_REQ_STATUS_REMOTE_ACCESS_ERR: return IB_WC_REM_ACCESS_ERR; case CQ_REQ_STATUS_REMOTE_OPERATION_ERR: return IB_WC_REM_OP_ERR; case CQ_REQ_STATUS_RNR_NAK_RETRY_CNT_ERR: return IB_WC_RNR_RETRY_EXC_ERR; case CQ_REQ_STATUS_TRANSPORT_RETRY_CNT_ERR: return IB_WC_RETRY_EXC_ERR; case CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR: return IB_WC_WR_FLUSH_ERR; default: return IB_WC_GENERAL_ERR; } return 0; } static u8 __rawqp1_to_ib_wc_status(u8 qstatus) { switch (qstatus) { case CQ_RES_RAWETH_QP1_STATUS_OK: return IB_WC_SUCCESS; case CQ_RES_RAWETH_QP1_STATUS_LOCAL_ACCESS_ERROR: return IB_WC_LOC_ACCESS_ERR; case CQ_RES_RAWETH_QP1_STATUS_HW_LOCAL_LENGTH_ERR: return IB_WC_LOC_LEN_ERR; case CQ_RES_RAWETH_QP1_STATUS_LOCAL_PROTECTION_ERR: return IB_WC_LOC_PROT_ERR; case CQ_RES_RAWETH_QP1_STATUS_LOCAL_QP_OPERATION_ERR: return IB_WC_LOC_QP_OP_ERR; case CQ_RES_RAWETH_QP1_STATUS_MEMORY_MGT_OPERATION_ERR: return IB_WC_GENERAL_ERR; case CQ_RES_RAWETH_QP1_STATUS_WORK_REQUEST_FLUSHED_ERR: return IB_WC_WR_FLUSH_ERR; case CQ_RES_RAWETH_QP1_STATUS_HW_FLUSH_ERR: return IB_WC_WR_FLUSH_ERR; default: return IB_WC_GENERAL_ERR; } } static u8 __rc_to_ib_wc_status(u8 qstatus) { switch (qstatus) { case CQ_RES_RC_STATUS_OK: return IB_WC_SUCCESS; case CQ_RES_RC_STATUS_LOCAL_ACCESS_ERROR: return IB_WC_LOC_ACCESS_ERR; case CQ_RES_RC_STATUS_LOCAL_LENGTH_ERR: return IB_WC_LOC_LEN_ERR; case CQ_RES_RC_STATUS_LOCAL_PROTECTION_ERR: return IB_WC_LOC_PROT_ERR; case CQ_RES_RC_STATUS_LOCAL_QP_OPERATION_ERR: return IB_WC_LOC_QP_OP_ERR; case CQ_RES_RC_STATUS_MEMORY_MGT_OPERATION_ERR: return IB_WC_GENERAL_ERR; case CQ_RES_RC_STATUS_REMOTE_INVALID_REQUEST_ERR: return IB_WC_REM_INV_REQ_ERR; case CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR: return IB_WC_WR_FLUSH_ERR; case CQ_RES_RC_STATUS_HW_FLUSH_ERR: return IB_WC_WR_FLUSH_ERR; default: return IB_WC_GENERAL_ERR; } } static void bnxt_re_process_req_wc(struct ib_wc *wc, struct bnxt_qplib_cqe *cqe) { switch (cqe->type) { case BNXT_QPLIB_SWQE_TYPE_SEND: wc->opcode = IB_WC_SEND; break; case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM: wc->opcode = IB_WC_SEND; wc->wc_flags |= IB_WC_WITH_IMM; break; case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV: wc->opcode = IB_WC_SEND; wc->wc_flags |= IB_WC_WITH_INVALIDATE; break; case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE: wc->opcode = IB_WC_RDMA_WRITE; break; case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM: wc->opcode = IB_WC_RDMA_WRITE; wc->wc_flags |= IB_WC_WITH_IMM; break; case BNXT_QPLIB_SWQE_TYPE_RDMA_READ: wc->opcode = IB_WC_RDMA_READ; break; case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP: wc->opcode = IB_WC_COMP_SWAP; break; case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD: wc->opcode = IB_WC_FETCH_ADD; break; case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV: wc->opcode = IB_WC_LOCAL_INV; break; case BNXT_QPLIB_SWQE_TYPE_REG_MR: wc->opcode = IB_WC_REG_MR; break; default: wc->opcode = IB_WC_SEND; break; } wc->status = __req_to_ib_wc_status(cqe->status); } static int bnxt_re_check_packet_type(u16 raweth_qp1_flags, u16 raweth_qp1_flags2) { bool is_udp = false, is_ipv6 = false, is_ipv4 = false; /* raweth_qp1_flags Bit 9-6 indicates itype */ if ((raweth_qp1_flags & CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS_ITYPE_ROCE) != CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS_ITYPE_ROCE) return -1; if (raweth_qp1_flags2 & CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_IP_CS_CALC && raweth_qp1_flags2 & CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_L4_CS_CALC) { is_udp = true; /* raweth_qp1_flags2 Bit 8 indicates ip_type. 0-v4 1 - v6 */ (raweth_qp1_flags2 & CQ_RES_RAWETH_QP1_RAWETH_QP1_FLAGS2_IP_TYPE) ? (is_ipv6 = true) : (is_ipv4 = true); return ((is_ipv6) ? BNXT_RE_ROCEV2_IPV6_PACKET : BNXT_RE_ROCEV2_IPV4_PACKET); } else { return BNXT_RE_ROCE_V1_PACKET; } } static int bnxt_re_to_ib_nw_type(int nw_type) { u8 nw_hdr_type = 0xFF; switch (nw_type) { case BNXT_RE_ROCE_V1_PACKET: nw_hdr_type = RDMA_NETWORK_ROCE_V1; break; case BNXT_RE_ROCEV2_IPV4_PACKET: nw_hdr_type = RDMA_NETWORK_IPV4; break; case BNXT_RE_ROCEV2_IPV6_PACKET: nw_hdr_type = RDMA_NETWORK_IPV6; break; } return nw_hdr_type; } static bool bnxt_re_is_loopback_packet(struct bnxt_re_dev *rdev, void *rq_hdr_buf) { u8 *tmp_buf = NULL; struct ethhdr *eth_hdr; u16 eth_type; bool rc = false; tmp_buf = (u8 *)rq_hdr_buf; /* * If dest mac is not same as I/F mac, this could be a * loopback address or multicast address, check whether * it is a loopback packet */ if (!ether_addr_equal(tmp_buf, rdev->netdev->dev_addr)) { tmp_buf += 4; /* Check the ether type */ eth_hdr = (struct ethhdr *)tmp_buf; eth_type = ntohs(eth_hdr->h_proto); switch (eth_type) { case ETH_P_IBOE: rc = true; break; case ETH_P_IP: case ETH_P_IPV6: { u32 len; struct udphdr *udp_hdr; len = (eth_type == ETH_P_IP ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)); tmp_buf += sizeof(struct ethhdr) + len; udp_hdr = (struct udphdr *)tmp_buf; if (ntohs(udp_hdr->dest) == ROCE_V2_UDP_DPORT) rc = true; break; } default: break; } } return rc; } static int bnxt_re_process_raw_qp_pkt_rx(struct bnxt_re_qp *qp1_qp, struct bnxt_qplib_cqe *cqe) { struct bnxt_re_dev *rdev = qp1_qp->rdev; struct bnxt_re_sqp_entries *sqp_entry = NULL; struct bnxt_re_qp *qp = rdev->qp1_sqp; struct ib_send_wr *swr; struct ib_ud_wr udwr; struct ib_recv_wr rwr; int pkt_type = 0; u32 tbl_idx; void *rq_hdr_buf; dma_addr_t rq_hdr_buf_map; dma_addr_t shrq_hdr_buf_map; u32 offset = 0; u32 skip_bytes = 0; struct ib_sge s_sge[2]; struct ib_sge r_sge[2]; int rc; memset(&udwr, 0, sizeof(udwr)); memset(&rwr, 0, sizeof(rwr)); memset(&s_sge, 0, sizeof(s_sge)); memset(&r_sge, 0, sizeof(r_sge)); swr = &udwr.wr; tbl_idx = cqe->wr_id; rq_hdr_buf = qp1_qp->qplib_qp.rq_hdr_buf + (tbl_idx * qp1_qp->qplib_qp.rq_hdr_buf_size); rq_hdr_buf_map = bnxt_qplib_get_qp_buf_from_index(&qp1_qp->qplib_qp, tbl_idx); /* Shadow QP header buffer */ shrq_hdr_buf_map = bnxt_qplib_get_qp_buf_from_index(&qp->qplib_qp, tbl_idx); sqp_entry = &rdev->sqp_tbl[tbl_idx]; /* Store this cqe */ memcpy(&sqp_entry->cqe, cqe, sizeof(struct bnxt_qplib_cqe)); sqp_entry->qp1_qp = qp1_qp; /* Find packet type from the cqe */ pkt_type = bnxt_re_check_packet_type(cqe->raweth_qp1_flags, cqe->raweth_qp1_flags2); if (pkt_type < 0) { dev_err(rdev_to_dev(rdev), "Invalid packet\n"); return -EINVAL; } /* Adjust the offset for the user buffer and post in the rq */ if (pkt_type == BNXT_RE_ROCEV2_IPV4_PACKET) offset = 20; /* * QP1 loopback packet has 4 bytes of internal header before * ether header. Skip these four bytes. */ if (bnxt_re_is_loopback_packet(rdev, rq_hdr_buf)) skip_bytes = 4; /* First send SGE . Skip the ether header*/ s_sge[0].addr = rq_hdr_buf_map + BNXT_QPLIB_MAX_QP1_RQ_ETH_HDR_SIZE + skip_bytes; s_sge[0].lkey = 0xFFFFFFFF; s_sge[0].length = offset ? BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV4 : BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6; /* Second Send SGE */ s_sge[1].addr = s_sge[0].addr + s_sge[0].length + BNXT_QPLIB_MAX_QP1_RQ_BDETH_HDR_SIZE; if (pkt_type != BNXT_RE_ROCE_V1_PACKET) s_sge[1].addr += 8; s_sge[1].lkey = 0xFFFFFFFF; s_sge[1].length = 256; /* First recv SGE */ r_sge[0].addr = shrq_hdr_buf_map; r_sge[0].lkey = 0xFFFFFFFF; r_sge[0].length = 40; r_sge[1].addr = sqp_entry->sge.addr + offset; r_sge[1].lkey = sqp_entry->sge.lkey; r_sge[1].length = BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6 + 256 - offset; /* Create receive work request */ rwr.num_sge = 2; rwr.sg_list = r_sge; rwr.wr_id = tbl_idx; rwr.next = NULL; rc = bnxt_re_post_recv_shadow_qp(rdev, qp, &rwr); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to post Rx buffers to shadow QP"); return -ENOMEM; } swr->num_sge = 2; swr->sg_list = s_sge; swr->wr_id = tbl_idx; swr->opcode = IB_WR_SEND; swr->next = NULL; udwr.ah = &rdev->sqp_ah->ib_ah; udwr.remote_qpn = rdev->qp1_sqp->qplib_qp.id; udwr.remote_qkey = rdev->qp1_sqp->qplib_qp.qkey; /* post data received in the send queue */ rc = bnxt_re_post_send_shadow_qp(rdev, qp, swr); return 0; } static void bnxt_re_process_res_rawqp1_wc(struct ib_wc *wc, struct bnxt_qplib_cqe *cqe) { wc->opcode = IB_WC_RECV; wc->status = __rawqp1_to_ib_wc_status(cqe->status); wc->wc_flags |= IB_WC_GRH; } static void bnxt_re_process_res_rc_wc(struct ib_wc *wc, struct bnxt_qplib_cqe *cqe) { wc->opcode = IB_WC_RECV; wc->status = __rc_to_ib_wc_status(cqe->status); if (cqe->flags & CQ_RES_RC_FLAGS_IMM) wc->wc_flags |= IB_WC_WITH_IMM; if (cqe->flags & CQ_RES_RC_FLAGS_INV) wc->wc_flags |= IB_WC_WITH_INVALIDATE; if ((cqe->flags & (CQ_RES_RC_FLAGS_RDMA | CQ_RES_RC_FLAGS_IMM)) == (CQ_RES_RC_FLAGS_RDMA | CQ_RES_RC_FLAGS_IMM)) wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; } static void bnxt_re_process_res_shadow_qp_wc(struct bnxt_re_qp *qp, struct ib_wc *wc, struct bnxt_qplib_cqe *cqe) { u32 tbl_idx; struct bnxt_re_dev *rdev = qp->rdev; struct bnxt_re_qp *qp1_qp = NULL; struct bnxt_qplib_cqe *orig_cqe = NULL; struct bnxt_re_sqp_entries *sqp_entry = NULL; int nw_type; tbl_idx = cqe->wr_id; sqp_entry = &rdev->sqp_tbl[tbl_idx]; qp1_qp = sqp_entry->qp1_qp; orig_cqe = &sqp_entry->cqe; wc->wr_id = sqp_entry->wrid; wc->byte_len = orig_cqe->length; wc->qp = &qp1_qp->ib_qp; wc->ex.imm_data = orig_cqe->immdata; wc->src_qp = orig_cqe->src_qp; memcpy(wc->smac, orig_cqe->smac, ETH_ALEN); wc->port_num = 1; wc->vendor_err = orig_cqe->status; wc->opcode = IB_WC_RECV; wc->status = __rawqp1_to_ib_wc_status(orig_cqe->status); wc->wc_flags |= IB_WC_GRH; nw_type = bnxt_re_check_packet_type(orig_cqe->raweth_qp1_flags, orig_cqe->raweth_qp1_flags2); if (nw_type >= 0) { wc->network_hdr_type = bnxt_re_to_ib_nw_type(nw_type); wc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE; } } static void bnxt_re_process_res_ud_wc(struct ib_wc *wc, struct bnxt_qplib_cqe *cqe) { wc->opcode = IB_WC_RECV; wc->status = __rc_to_ib_wc_status(cqe->status); if (cqe->flags & CQ_RES_RC_FLAGS_IMM) wc->wc_flags |= IB_WC_WITH_IMM; if (cqe->flags & CQ_RES_RC_FLAGS_INV) wc->wc_flags |= IB_WC_WITH_INVALIDATE; if ((cqe->flags & (CQ_RES_RC_FLAGS_RDMA | CQ_RES_RC_FLAGS_IMM)) == (CQ_RES_RC_FLAGS_RDMA | CQ_RES_RC_FLAGS_IMM)) wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; } int bnxt_re_poll_cq(struct ib_cq *ib_cq, int num_entries, struct ib_wc *wc) { struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); struct bnxt_re_qp *qp; struct bnxt_qplib_cqe *cqe; int i, ncqe, budget; u32 tbl_idx; struct bnxt_re_sqp_entries *sqp_entry = NULL; unsigned long flags; spin_lock_irqsave(&cq->cq_lock, flags); budget = min_t(u32, num_entries, cq->max_cql); if (!cq->cql) { dev_err(rdev_to_dev(cq->rdev), "POLL CQ : no CQL to use"); goto exit; } cqe = &cq->cql[0]; while (budget) { ncqe = bnxt_qplib_poll_cq(&cq->qplib_cq, cqe, budget); if (!ncqe) break; for (i = 0; i < ncqe; i++, cqe++) { /* Transcribe each qplib_wqe back to ib_wc */ memset(wc, 0, sizeof(*wc)); wc->wr_id = cqe->wr_id; wc->byte_len = cqe->length; qp = container_of ((struct bnxt_qplib_qp *) (unsigned long)(cqe->qp_handle), struct bnxt_re_qp, qplib_qp); if (!qp) { dev_err(rdev_to_dev(cq->rdev), "POLL CQ : bad QP handle"); continue; } wc->qp = &qp->ib_qp; wc->ex.imm_data = cqe->immdata; wc->src_qp = cqe->src_qp; memcpy(wc->smac, cqe->smac, ETH_ALEN); wc->port_num = 1; wc->vendor_err = cqe->status; switch (cqe->opcode) { case CQ_BASE_CQE_TYPE_REQ: if (qp->qplib_qp.id == qp->rdev->qp1_sqp->qplib_qp.id) { /* Handle this completion with * the stored completion */ memset(wc, 0, sizeof(*wc)); continue; } bnxt_re_process_req_wc(wc, cqe); break; case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1: if (!cqe->status) { int rc = 0; rc = bnxt_re_process_raw_qp_pkt_rx (qp, cqe); if (!rc) { memset(wc, 0, sizeof(*wc)); continue; } cqe->status = -1; } /* Errors need not be looped back. * But change the wr_id to the one * stored in the table */ tbl_idx = cqe->wr_id; sqp_entry = &cq->rdev->sqp_tbl[tbl_idx]; wc->wr_id = sqp_entry->wrid; bnxt_re_process_res_rawqp1_wc(wc, cqe); break; case CQ_BASE_CQE_TYPE_RES_RC: bnxt_re_process_res_rc_wc(wc, cqe); break; case CQ_BASE_CQE_TYPE_RES_UD: if (qp->qplib_qp.id == qp->rdev->qp1_sqp->qplib_qp.id) { /* Handle this completion with * the stored completion */ if (cqe->status) { continue; } else { bnxt_re_process_res_shadow_qp_wc (qp, wc, cqe); break; } } bnxt_re_process_res_ud_wc(wc, cqe); break; default: dev_err(rdev_to_dev(cq->rdev), "POLL CQ : type 0x%x not handled", cqe->opcode); continue; } wc++; budget--; } } exit: spin_unlock_irqrestore(&cq->cq_lock, flags); return num_entries - budget; } int bnxt_re_req_notify_cq(struct ib_cq *ib_cq, enum ib_cq_notify_flags ib_cqn_flags) { struct bnxt_re_cq *cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); int type = 0; /* Trigger on the very next completion */ if (ib_cqn_flags & IB_CQ_NEXT_COMP) type = DBR_DBR_TYPE_CQ_ARMALL; /* Trigger on the next solicited completion */ else if (ib_cqn_flags & IB_CQ_SOLICITED) type = DBR_DBR_TYPE_CQ_ARMSE; bnxt_qplib_req_notify_cq(&cq->qplib_cq, type); return 0; } /* Memory Regions */ struct ib_mr *bnxt_re_get_dma_mr(struct ib_pd *ib_pd, int mr_access_flags) { struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); struct bnxt_re_dev *rdev = pd->rdev; struct bnxt_re_mr *mr; u64 pbl = 0; int rc; mr = kzalloc(sizeof(*mr), GFP_KERNEL); if (!mr) return ERR_PTR(-ENOMEM); mr->rdev = rdev; mr->qplib_mr.pd = &pd->qplib_pd; mr->qplib_mr.flags = __from_ib_access_flags(mr_access_flags); mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; /* Allocate and register 0 as the address */ rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); if (rc) goto fail; mr->qplib_mr.hwq.level = PBL_LVL_MAX; mr->qplib_mr.total_size = -1; /* Infinte length */ rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &mr->qplib_mr, &pbl, 0, false); if (rc) goto fail_mr; mr->ib_mr.lkey = mr->qplib_mr.lkey; if (mr_access_flags & (IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_ATOMIC)) mr->ib_mr.rkey = mr->ib_mr.lkey; atomic_inc(&rdev->mr_count); return &mr->ib_mr; fail_mr: bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); fail: kfree(mr); return ERR_PTR(rc); } int bnxt_re_dereg_mr(struct ib_mr *ib_mr) { struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); struct bnxt_re_dev *rdev = mr->rdev; int rc; if (mr->npages && mr->pages) { rc = bnxt_qplib_free_fast_reg_page_list(&rdev->qplib_res, &mr->qplib_frpl); kfree(mr->pages); mr->npages = 0; mr->pages = NULL; } rc = bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); if (!IS_ERR_OR_NULL(mr->ib_umem)) ib_umem_release(mr->ib_umem); kfree(mr); atomic_dec(&rdev->mr_count); return rc; } static int bnxt_re_set_page(struct ib_mr *ib_mr, u64 addr) { struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); if (unlikely(mr->npages == mr->qplib_frpl.max_pg_ptrs)) return -ENOMEM; mr->pages[mr->npages++] = addr; return 0; } int bnxt_re_map_mr_sg(struct ib_mr *ib_mr, struct scatterlist *sg, int sg_nents, unsigned int *sg_offset) { struct bnxt_re_mr *mr = container_of(ib_mr, struct bnxt_re_mr, ib_mr); mr->npages = 0; return ib_sg_to_pages(ib_mr, sg, sg_nents, sg_offset, bnxt_re_set_page); } struct ib_mr *bnxt_re_alloc_mr(struct ib_pd *ib_pd, enum ib_mr_type type, u32 max_num_sg) { struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); struct bnxt_re_dev *rdev = pd->rdev; struct bnxt_re_mr *mr = NULL; int rc; if (type != IB_MR_TYPE_MEM_REG) { dev_dbg(rdev_to_dev(rdev), "MR type 0x%x not supported", type); return ERR_PTR(-EINVAL); } if (max_num_sg > MAX_PBL_LVL_1_PGS) return ERR_PTR(-EINVAL); mr = kzalloc(sizeof(*mr), GFP_KERNEL); if (!mr) return ERR_PTR(-ENOMEM); mr->rdev = rdev; mr->qplib_mr.pd = &pd->qplib_pd; mr->qplib_mr.flags = BNXT_QPLIB_FR_PMR; mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); if (rc) goto fail; mr->ib_mr.lkey = mr->qplib_mr.lkey; mr->ib_mr.rkey = mr->ib_mr.lkey; mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL); if (!mr->pages) { rc = -ENOMEM; goto fail; } rc = bnxt_qplib_alloc_fast_reg_page_list(&rdev->qplib_res, &mr->qplib_frpl, max_num_sg); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to allocate HW FR page list"); goto fail_mr; } atomic_inc(&rdev->mr_count); return &mr->ib_mr; fail_mr: bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); fail: kfree(mr->pages); kfree(mr); return ERR_PTR(rc); } /* Fast Memory Regions */ struct ib_fmr *bnxt_re_alloc_fmr(struct ib_pd *ib_pd, int mr_access_flags, struct ib_fmr_attr *fmr_attr) { struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); struct bnxt_re_dev *rdev = pd->rdev; struct bnxt_re_fmr *fmr; int rc; if (fmr_attr->max_pages > MAX_PBL_LVL_2_PGS || fmr_attr->max_maps > rdev->dev_attr.max_map_per_fmr) { dev_err(rdev_to_dev(rdev), "Allocate FMR exceeded Max limit"); return ERR_PTR(-ENOMEM); } fmr = kzalloc(sizeof(*fmr), GFP_KERNEL); if (!fmr) return ERR_PTR(-ENOMEM); fmr->rdev = rdev; fmr->qplib_fmr.pd = &pd->qplib_pd; fmr->qplib_fmr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR; rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &fmr->qplib_fmr); if (rc) goto fail; fmr->qplib_fmr.flags = __from_ib_access_flags(mr_access_flags); fmr->ib_fmr.lkey = fmr->qplib_fmr.lkey; fmr->ib_fmr.rkey = fmr->ib_fmr.lkey; atomic_inc(&rdev->mr_count); return &fmr->ib_fmr; fail: kfree(fmr); return ERR_PTR(rc); } int bnxt_re_map_phys_fmr(struct ib_fmr *ib_fmr, u64 *page_list, int list_len, u64 iova) { struct bnxt_re_fmr *fmr = container_of(ib_fmr, struct bnxt_re_fmr, ib_fmr); struct bnxt_re_dev *rdev = fmr->rdev; int rc; fmr->qplib_fmr.va = iova; fmr->qplib_fmr.total_size = list_len * PAGE_SIZE; rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &fmr->qplib_fmr, page_list, list_len, true); if (rc) dev_err(rdev_to_dev(rdev), "Failed to map FMR for lkey = 0x%x!", fmr->ib_fmr.lkey); return rc; } int bnxt_re_unmap_fmr(struct list_head *fmr_list) { struct bnxt_re_dev *rdev; struct bnxt_re_fmr *fmr; struct ib_fmr *ib_fmr; int rc = 0; /* Validate each FMRs inside the fmr_list */ list_for_each_entry(ib_fmr, fmr_list, list) { fmr = container_of(ib_fmr, struct bnxt_re_fmr, ib_fmr); rdev = fmr->rdev; if (rdev) { rc = bnxt_qplib_dereg_mrw(&rdev->qplib_res, &fmr->qplib_fmr, true); if (rc) break; } } return rc; } int bnxt_re_dealloc_fmr(struct ib_fmr *ib_fmr) { struct bnxt_re_fmr *fmr = container_of(ib_fmr, struct bnxt_re_fmr, ib_fmr); struct bnxt_re_dev *rdev = fmr->rdev; int rc; rc = bnxt_qplib_free_mrw(&rdev->qplib_res, &fmr->qplib_fmr); if (rc) dev_err(rdev_to_dev(rdev), "Failed to free FMR"); kfree(fmr); atomic_dec(&rdev->mr_count); return rc; } /* uverbs */ struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *ib_pd, u64 start, u64 length, u64 virt_addr, int mr_access_flags, struct ib_udata *udata) { struct bnxt_re_pd *pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd); struct bnxt_re_dev *rdev = pd->rdev; struct bnxt_re_mr *mr; struct ib_umem *umem; u64 *pbl_tbl, *pbl_tbl_orig; int i, umem_pgs, pages, rc; struct scatterlist *sg; int entry; mr = kzalloc(sizeof(*mr), GFP_KERNEL); if (!mr) return ERR_PTR(-ENOMEM); mr->rdev = rdev; mr->qplib_mr.pd = &pd->qplib_pd; mr->qplib_mr.flags = __from_ib_access_flags(mr_access_flags); mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_MR; umem = ib_umem_get(ib_pd->uobject->context, start, length, mr_access_flags, 0); if (IS_ERR(umem)) { dev_err(rdev_to_dev(rdev), "Failed to get umem"); rc = -EFAULT; goto free_mr; } mr->ib_umem = umem; rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to allocate MR"); goto release_umem; } /* The fixed portion of the rkey is the same as the lkey */ mr->ib_mr.rkey = mr->qplib_mr.rkey; mr->qplib_mr.va = virt_addr; umem_pgs = ib_umem_page_count(umem); if (!umem_pgs) { dev_err(rdev_to_dev(rdev), "umem is invalid!"); rc = -EINVAL; goto free_mrw; } mr->qplib_mr.total_size = length; pbl_tbl = kcalloc(umem_pgs, sizeof(u64 *), GFP_KERNEL); if (!pbl_tbl) { rc = -EINVAL; goto free_mrw; } pbl_tbl_orig = pbl_tbl; if (umem->hugetlb) { dev_err(rdev_to_dev(rdev), "umem hugetlb not supported!"); rc = -EFAULT; goto fail; } if (umem->page_shift != PAGE_SHIFT) { dev_err(rdev_to_dev(rdev), "umem page shift unsupported!"); rc = -EFAULT; goto fail; } /* Map umem buf ptrs to the PBL */ for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) { pages = sg_dma_len(sg) >> umem->page_shift; for (i = 0; i < pages; i++, pbl_tbl++) *pbl_tbl = sg_dma_address(sg) + (i << umem->page_shift); } rc = bnxt_qplib_reg_mr(&rdev->qplib_res, &mr->qplib_mr, pbl_tbl_orig, umem_pgs, false); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to register user MR"); goto fail; } kfree(pbl_tbl_orig); mr->ib_mr.lkey = mr->qplib_mr.lkey; mr->ib_mr.rkey = mr->qplib_mr.lkey; atomic_inc(&rdev->mr_count); return &mr->ib_mr; fail: kfree(pbl_tbl_orig); free_mrw: bnxt_qplib_free_mrw(&rdev->qplib_res, &mr->qplib_mr); release_umem: ib_umem_release(umem); free_mr: kfree(mr); return ERR_PTR(rc); } struct ib_ucontext *bnxt_re_alloc_ucontext(struct ib_device *ibdev, struct ib_udata *udata) { struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev); struct bnxt_re_uctx_resp resp; struct bnxt_re_ucontext *uctx; struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; int rc; dev_dbg(rdev_to_dev(rdev), "ABI version requested %d", ibdev->uverbs_abi_ver); if (ibdev->uverbs_abi_ver != BNXT_RE_ABI_VERSION) { dev_dbg(rdev_to_dev(rdev), " is different from the device %d ", BNXT_RE_ABI_VERSION); return ERR_PTR(-EPERM); } uctx = kzalloc(sizeof(*uctx), GFP_KERNEL); if (!uctx) return ERR_PTR(-ENOMEM); uctx->rdev = rdev; uctx->shpg = (void *)__get_free_page(GFP_KERNEL); if (!uctx->shpg) { rc = -ENOMEM; goto fail; } spin_lock_init(&uctx->sh_lock); resp.dev_id = rdev->en_dev->pdev->devfn; /*Temp, Use idr_alloc instead*/ resp.max_qp = rdev->qplib_ctx.qpc_count; resp.pg_size = PAGE_SIZE; resp.cqe_sz = sizeof(struct cq_base); resp.max_cqd = dev_attr->max_cq_wqes; resp.rsvd = 0; rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); if (rc) { dev_err(rdev_to_dev(rdev), "Failed to copy user context"); rc = -EFAULT; goto cfail; } return &uctx->ib_uctx; cfail: free_page((unsigned long)uctx->shpg); uctx->shpg = NULL; fail: kfree(uctx); return ERR_PTR(rc); } int bnxt_re_dealloc_ucontext(struct ib_ucontext *ib_uctx) { struct bnxt_re_ucontext *uctx = container_of(ib_uctx, struct bnxt_re_ucontext, ib_uctx); if (uctx->shpg) free_page((unsigned long)uctx->shpg); kfree(uctx); return 0; } /* Helper function to mmap the virtual memory from user app */ int bnxt_re_mmap(struct ib_ucontext *ib_uctx, struct vm_area_struct *vma) { struct bnxt_re_ucontext *uctx = container_of(ib_uctx, struct bnxt_re_ucontext, ib_uctx); struct bnxt_re_dev *rdev = uctx->rdev; u64 pfn; if (vma->vm_end - vma->vm_start != PAGE_SIZE) return -EINVAL; if (vma->vm_pgoff) { vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); if (io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, PAGE_SIZE, vma->vm_page_prot)) { dev_err(rdev_to_dev(rdev), "Failed to map DPI"); return -EAGAIN; } } else { pfn = virt_to_phys(uctx->shpg) >> PAGE_SHIFT; if (remap_pfn_range(vma, vma->vm_start, pfn, PAGE_SIZE, vma->vm_page_prot)) { dev_err(rdev_to_dev(rdev), "Failed to map shared page"); return -EAGAIN; } } return 0; }