From 048867793046e6bd665869816f4702fc49cc9a18 Mon Sep 17 00:00:00 2001 From: Ram Amrani Date: Mon, 10 Oct 2016 13:15:38 +0300 Subject: [PATCH] qedr: Add GSI support Add support for GSI over light L2. Signed-off-by: Rajesh Borundia Signed-off-by: Ram Amrani Signed-off-by: Doug Ledford --- drivers/infiniband/hw/qedr/Makefile | 2 +- drivers/infiniband/hw/qedr/main.c | 3 + drivers/infiniband/hw/qedr/qedr.h | 15 + drivers/infiniband/hw/qedr/qedr_cm.c | 622 +++++++++++++++++++++++++++ drivers/infiniband/hw/qedr/qedr_cm.h | 21 + drivers/infiniband/hw/qedr/verbs.c | 41 ++ drivers/infiniband/hw/qedr/verbs.h | 3 + 7 files changed, 706 insertions(+), 1 deletion(-) create mode 100644 drivers/infiniband/hw/qedr/qedr_cm.c diff --git a/drivers/infiniband/hw/qedr/Makefile b/drivers/infiniband/hw/qedr/Makefile index b10f2b17ada5..ba7067c77f2f 100644 --- a/drivers/infiniband/hw/qedr/Makefile +++ b/drivers/infiniband/hw/qedr/Makefile @@ -1,3 +1,3 @@ obj-$(CONFIG_INFINIBAND_QEDR) := qedr.o -qedr-y := main.o verbs.o +qedr-y := main.o verbs.o qedr_cm.o diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c index e5a07a2d4c5e..42dff48a3171 100644 --- a/drivers/infiniband/hw/qedr/main.c +++ b/drivers/infiniband/hw/qedr/main.c @@ -138,6 +138,9 @@ static int qedr_register_device(struct qedr_dev *dev) dev->ibdev.query_pkey = qedr_query_pkey; + dev->ibdev.create_ah = qedr_create_ah; + dev->ibdev.destroy_ah = qedr_destroy_ah; + dev->ibdev.get_dma_mr = qedr_get_dma_mr; dev->ibdev.dereg_mr = qedr_dereg_mr; dev->ibdev.reg_user_mr = qedr_reg_user_mr; diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h index 0b404d87921f..620badd7d4fb 100644 --- a/drivers/infiniband/hw/qedr/qedr.h +++ b/drivers/infiniband/hw/qedr/qedr.h @@ -55,6 +55,7 @@ #define QEDR_MSG_RQ " RQ" #define QEDR_MSG_SQ " SQ" #define QEDR_MSG_QP " QP" +#define QEDR_MSG_GSI " GSI" #define QEDR_CQ_MAGIC_NUMBER (0x11223344) @@ -148,6 +149,10 @@ struct qedr_dev { u8 num_hwfns; uint wq_multiplier; u8 gsi_ll2_mac_address[ETH_ALEN]; + int gsi_qp_created; + struct qedr_cq *gsi_sqcq; + struct qedr_cq *gsi_rqcq; + struct qedr_qp *gsi_qp; }; #define QEDR_MAX_SQ_PBL (0x8000) @@ -246,6 +251,9 @@ struct qedr_cq { u16 icid; + /* Lock to protect completion handler */ + spinlock_t comp_handler_lock; + /* Lock to protect multiplem CQ's */ spinlock_t cq_lock; u8 arm_flags; @@ -292,6 +300,7 @@ struct qedr_qp_hwq_info { u16 prod; u16 cons; u16 wqe_cons; + u16 gsi_cons; u16 max_wr; /* DB */ @@ -366,6 +375,7 @@ struct qedr_qp { struct ib_sge sg_list[RDMA_MAX_SGE_PER_RQ_WQE]; u8 wqe_size; + u8 smac[ETH_ALEN]; u16 vlan_id; int rc; } *rqe_wr_id; @@ -473,6 +483,11 @@ static inline struct qedr_qp *get_qedr_qp(struct ib_qp *ibqp) return container_of(ibqp, struct qedr_qp, ibqp); } +static inline struct qedr_ah *get_qedr_ah(struct ib_ah *ibah) +{ + return container_of(ibah, struct qedr_ah, ibah); +} + static inline struct qedr_mr *get_qedr_mr(struct ib_mr *ibmr) { return container_of(ibmr, struct qedr_mr, ibmr); diff --git a/drivers/infiniband/hw/qedr/qedr_cm.c b/drivers/infiniband/hw/qedr/qedr_cm.c new file mode 100644 index 000000000000..63890ebb72bd --- /dev/null +++ b/drivers/infiniband/hw/qedr/qedr_cm.c @@ -0,0 +1,622 @@ +/* QLogic qedr NIC Driver + * Copyright (c) 2015-2016 QLogic Corporation + * + * 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 "qedr_hsi.h" +#include +#include +#include "qedr.h" +#include "qedr_hsi.h" +#include "verbs.h" +#include +#include "qedr_hsi.h" +#include "qedr_cm.h" + +void qedr_inc_sw_gsi_cons(struct qedr_qp_hwq_info *info) +{ + info->gsi_cons = (info->gsi_cons + 1) % info->max_wr; +} + +void qedr_store_gsi_qp_cq(struct qedr_dev *dev, struct qedr_qp *qp, + struct ib_qp_init_attr *attrs) +{ + dev->gsi_qp_created = 1; + dev->gsi_sqcq = get_qedr_cq(attrs->send_cq); + dev->gsi_rqcq = get_qedr_cq(attrs->recv_cq); + dev->gsi_qp = qp; +} + +void qedr_ll2_tx_cb(void *_qdev, struct qed_roce_ll2_packet *pkt) +{ + struct qedr_dev *dev = (struct qedr_dev *)_qdev; + struct qedr_cq *cq = dev->gsi_sqcq; + struct qedr_qp *qp = dev->gsi_qp; + unsigned long flags; + + DP_DEBUG(dev, QEDR_MSG_GSI, + "LL2 TX CB: gsi_sqcq=%p, gsi_rqcq=%p, gsi_cons=%d, ibcq_comp=%s\n", + dev->gsi_sqcq, dev->gsi_rqcq, qp->sq.gsi_cons, + cq->ibcq.comp_handler ? "Yes" : "No"); + + dma_free_coherent(&dev->pdev->dev, pkt->header.len, pkt->header.vaddr, + pkt->header.baddr); + kfree(pkt); + + spin_lock_irqsave(&qp->q_lock, flags); + qedr_inc_sw_gsi_cons(&qp->sq); + spin_unlock_irqrestore(&qp->q_lock, flags); + + if (cq->ibcq.comp_handler) { + spin_lock_irqsave(&cq->comp_handler_lock, flags); + (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context); + spin_unlock_irqrestore(&cq->comp_handler_lock, flags); + } +} + +void qedr_ll2_rx_cb(void *_dev, struct qed_roce_ll2_packet *pkt, + struct qed_roce_ll2_rx_params *params) +{ + struct qedr_dev *dev = (struct qedr_dev *)_dev; + struct qedr_cq *cq = dev->gsi_rqcq; + struct qedr_qp *qp = dev->gsi_qp; + unsigned long flags; + + spin_lock_irqsave(&qp->q_lock, flags); + + qp->rqe_wr_id[qp->rq.gsi_cons].rc = params->rc; + qp->rqe_wr_id[qp->rq.gsi_cons].vlan_id = params->vlan_id; + qp->rqe_wr_id[qp->rq.gsi_cons].sg_list[0].length = pkt->payload[0].len; + ether_addr_copy(qp->rqe_wr_id[qp->rq.gsi_cons].smac, params->smac); + + qedr_inc_sw_gsi_cons(&qp->rq); + + spin_unlock_irqrestore(&qp->q_lock, flags); + + if (cq->ibcq.comp_handler) { + spin_lock_irqsave(&cq->comp_handler_lock, flags); + (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context); + spin_unlock_irqrestore(&cq->comp_handler_lock, flags); + } +} + +static void qedr_destroy_gsi_cq(struct qedr_dev *dev, + struct ib_qp_init_attr *attrs) +{ + struct qed_rdma_destroy_cq_in_params iparams; + struct qed_rdma_destroy_cq_out_params oparams; + struct qedr_cq *cq; + + cq = get_qedr_cq(attrs->send_cq); + iparams.icid = cq->icid; + dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams); + dev->ops->common->chain_free(dev->cdev, &cq->pbl); + + cq = get_qedr_cq(attrs->recv_cq); + /* if a dedicated recv_cq was used, delete it too */ + if (iparams.icid != cq->icid) { + iparams.icid = cq->icid; + dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams); + dev->ops->common->chain_free(dev->cdev, &cq->pbl); + } +} + +static inline int qedr_check_gsi_qp_attrs(struct qedr_dev *dev, + struct ib_qp_init_attr *attrs) +{ + if (attrs->cap.max_recv_sge > QEDR_GSI_MAX_RECV_SGE) { + DP_ERR(dev, + " create gsi qp: failed. max_recv_sge is larger the max %d>%d\n", + attrs->cap.max_recv_sge, QEDR_GSI_MAX_RECV_SGE); + return -EINVAL; + } + + if (attrs->cap.max_recv_wr > QEDR_GSI_MAX_RECV_WR) { + DP_ERR(dev, + " create gsi qp: failed. max_recv_wr is too large %d>%d\n", + attrs->cap.max_recv_wr, QEDR_GSI_MAX_RECV_WR); + return -EINVAL; + } + + if (attrs->cap.max_send_wr > QEDR_GSI_MAX_SEND_WR) { + DP_ERR(dev, + " create gsi qp: failed. max_send_wr is too large %d>%d\n", + attrs->cap.max_send_wr, QEDR_GSI_MAX_SEND_WR); + return -EINVAL; + } + + return 0; +} + +struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev, + struct ib_qp_init_attr *attrs, + struct qedr_qp *qp) +{ + struct qed_roce_ll2_params ll2_params; + int rc; + + rc = qedr_check_gsi_qp_attrs(dev, attrs); + if (rc) + return ERR_PTR(rc); + + /* configure and start LL2 */ + memset(&ll2_params, 0, sizeof(ll2_params)); + ll2_params.max_tx_buffers = attrs->cap.max_send_wr; + ll2_params.max_rx_buffers = attrs->cap.max_recv_wr; + ll2_params.cbs.tx_cb = qedr_ll2_tx_cb; + ll2_params.cbs.rx_cb = qedr_ll2_rx_cb; + ll2_params.cb_cookie = (void *)dev; + ll2_params.mtu = dev->ndev->mtu; + ether_addr_copy(ll2_params.mac_address, dev->ndev->dev_addr); + rc = dev->ops->roce_ll2_start(dev->cdev, &ll2_params); + if (rc) { + DP_ERR(dev, "create gsi qp: failed on ll2 start. rc=%d\n", rc); + return ERR_PTR(rc); + } + + /* create QP */ + qp->ibqp.qp_num = 1; + qp->rq.max_wr = attrs->cap.max_recv_wr; + qp->sq.max_wr = attrs->cap.max_send_wr; + + qp->rqe_wr_id = kcalloc(qp->rq.max_wr, sizeof(*qp->rqe_wr_id), + GFP_KERNEL); + if (!qp->rqe_wr_id) + goto err; + qp->wqe_wr_id = kcalloc(qp->sq.max_wr, sizeof(*qp->wqe_wr_id), + GFP_KERNEL); + if (!qp->wqe_wr_id) + goto err; + + qedr_store_gsi_qp_cq(dev, qp, attrs); + ether_addr_copy(dev->gsi_ll2_mac_address, dev->ndev->dev_addr); + + /* the GSI CQ is handled by the driver so remove it from the FW */ + qedr_destroy_gsi_cq(dev, attrs); + dev->gsi_rqcq->cq_type = QEDR_CQ_TYPE_GSI; + dev->gsi_rqcq->cq_type = QEDR_CQ_TYPE_GSI; + + DP_DEBUG(dev, QEDR_MSG_GSI, "created GSI QP %p\n", qp); + + return &qp->ibqp; + +err: + kfree(qp->rqe_wr_id); + + rc = dev->ops->roce_ll2_stop(dev->cdev); + if (rc) + DP_ERR(dev, "create gsi qp: failed destroy on create\n"); + + return ERR_PTR(-ENOMEM); +} + +int qedr_destroy_gsi_qp(struct qedr_dev *dev) +{ + int rc; + + rc = dev->ops->roce_ll2_stop(dev->cdev); + if (rc) + DP_ERR(dev, "destroy gsi qp: failed (rc=%d)\n", rc); + else + DP_DEBUG(dev, QEDR_MSG_GSI, "destroy gsi qp: success\n"); + + return rc; +} + +#define QEDR_MAX_UD_HEADER_SIZE (100) +#define QEDR_GSI_QPN (1) +static inline int qedr_gsi_build_header(struct qedr_dev *dev, + struct qedr_qp *qp, + struct ib_send_wr *swr, + struct ib_ud_header *udh, + int *roce_mode) +{ + bool has_vlan = false, has_grh_ipv6 = true; + struct ib_ah_attr *ah_attr = &get_qedr_ah(ud_wr(swr)->ah)->attr; + struct ib_global_route *grh = &ah_attr->grh; + union ib_gid sgid; + int send_size = 0; + u16 vlan_id = 0; + u16 ether_type; + struct ib_gid_attr sgid_attr; + int rc; + int ip_ver = 0; + + bool has_udp = false; + int i; + + send_size = 0; + for (i = 0; i < swr->num_sge; ++i) + send_size += swr->sg_list[i].length; + + rc = ib_get_cached_gid(qp->ibqp.device, ah_attr->port_num, + grh->sgid_index, &sgid, &sgid_attr); + if (rc) { + DP_ERR(dev, + "gsi post send: failed to get cached GID (port=%d, ix=%d)\n", + ah_attr->port_num, grh->sgid_index); + return rc; + } + + vlan_id = rdma_vlan_dev_vlan_id(sgid_attr.ndev); + if (vlan_id < VLAN_CFI_MASK) + has_vlan = true; + if (sgid_attr.ndev) + dev_put(sgid_attr.ndev); + + if (!memcmp(&sgid, &zgid, sizeof(sgid))) { + DP_ERR(dev, "gsi post send: GID not found GID index %d\n", + ah_attr->grh.sgid_index); + return -ENOENT; + } + + has_udp = (sgid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP); + if (!has_udp) { + /* RoCE v1 */ + ether_type = ETH_P_ROCE; + *roce_mode = ROCE_V1; + } else if (ipv6_addr_v4mapped((struct in6_addr *)&sgid)) { + /* RoCE v2 IPv4 */ + ip_ver = 4; + ether_type = ETH_P_IP; + has_grh_ipv6 = false; + *roce_mode = ROCE_V2_IPV4; + } else { + /* RoCE v2 IPv6 */ + ip_ver = 6; + ether_type = ETH_P_IPV6; + *roce_mode = ROCE_V2_IPV6; + } + + rc = ib_ud_header_init(send_size, false, true, has_vlan, + has_grh_ipv6, ip_ver, has_udp, 0, udh); + if (rc) { + DP_ERR(dev, "gsi post send: failed to init header\n"); + return rc; + } + + /* ENET + VLAN headers */ + ether_addr_copy(udh->eth.dmac_h, ah_attr->dmac); + ether_addr_copy(udh->eth.smac_h, dev->ndev->dev_addr); + if (has_vlan) { + udh->eth.type = htons(ETH_P_8021Q); + udh->vlan.tag = htons(vlan_id); + udh->vlan.type = htons(ether_type); + } else { + udh->eth.type = htons(ether_type); + } + + /* BTH */ + udh->bth.solicited_event = !!(swr->send_flags & IB_SEND_SOLICITED); + udh->bth.pkey = QEDR_ROCE_PKEY_DEFAULT; + udh->bth.destination_qpn = htonl(ud_wr(swr)->remote_qpn); + udh->bth.psn = htonl((qp->sq_psn++) & ((1 << 24) - 1)); + udh->bth.opcode = IB_OPCODE_UD_SEND_ONLY; + + /* DETH */ + udh->deth.qkey = htonl(0x80010000); + udh->deth.source_qpn = htonl(QEDR_GSI_QPN); + + if (has_grh_ipv6) { + /* GRH / IPv6 header */ + udh->grh.traffic_class = grh->traffic_class; + udh->grh.flow_label = grh->flow_label; + udh->grh.hop_limit = grh->hop_limit; + udh->grh.destination_gid = grh->dgid; + memcpy(&udh->grh.source_gid.raw, &sgid.raw, + sizeof(udh->grh.source_gid.raw)); + } else { + /* IPv4 header */ + u32 ipv4_addr; + + udh->ip4.protocol = IPPROTO_UDP; + udh->ip4.tos = htonl(ah_attr->grh.flow_label); + udh->ip4.frag_off = htons(IP_DF); + udh->ip4.ttl = ah_attr->grh.hop_limit; + + ipv4_addr = qedr_get_ipv4_from_gid(sgid.raw); + udh->ip4.saddr = ipv4_addr; + ipv4_addr = qedr_get_ipv4_from_gid(ah_attr->grh.dgid.raw); + udh->ip4.daddr = ipv4_addr; + /* note: checksum is calculated by the device */ + } + + /* UDP */ + if (has_udp) { + udh->udp.sport = htons(QEDR_ROCE_V2_UDP_SPORT); + udh->udp.dport = htons(ROCE_V2_UDP_DPORT); + udh->udp.csum = 0; + /* UDP length is untouched hence is zero */ + } + return 0; +} + +static inline int qedr_gsi_build_packet(struct qedr_dev *dev, + struct qedr_qp *qp, + struct ib_send_wr *swr, + struct qed_roce_ll2_packet **p_packet) +{ + u8 ud_header_buffer[QEDR_MAX_UD_HEADER_SIZE]; + struct qed_roce_ll2_packet *packet; + struct pci_dev *pdev = dev->pdev; + int roce_mode, header_size; + struct ib_ud_header udh; + int i, rc; + + *p_packet = NULL; + + rc = qedr_gsi_build_header(dev, qp, swr, &udh, &roce_mode); + if (rc) + return rc; + + header_size = ib_ud_header_pack(&udh, &ud_header_buffer); + + packet = kzalloc(sizeof(*packet), GFP_ATOMIC); + if (!packet) + return -ENOMEM; + + packet->header.vaddr = dma_alloc_coherent(&pdev->dev, header_size, + &packet->header.baddr, + GFP_ATOMIC); + if (!packet->header.vaddr) { + kfree(packet); + return -ENOMEM; + } + + if (ether_addr_equal(udh.eth.smac_h, udh.eth.dmac_h)) + packet->tx_dest = QED_ROCE_LL2_TX_DEST_NW; + else + packet->tx_dest = QED_ROCE_LL2_TX_DEST_LB; + + packet->roce_mode = roce_mode; + memcpy(packet->header.vaddr, ud_header_buffer, header_size); + packet->header.len = header_size; + packet->n_seg = swr->num_sge; + for (i = 0; i < packet->n_seg; i++) { + packet->payload[i].baddr = swr->sg_list[i].addr; + packet->payload[i].len = swr->sg_list[i].length; + } + + *p_packet = packet; + + return 0; +} + +int qedr_gsi_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, + struct ib_send_wr **bad_wr) +{ + struct qed_roce_ll2_packet *pkt = NULL; + struct qedr_qp *qp = get_qedr_qp(ibqp); + struct qed_roce_ll2_tx_params params; + struct qedr_dev *dev = qp->dev; + unsigned long flags; + int rc; + + if (qp->state != QED_ROCE_QP_STATE_RTS) { + *bad_wr = wr; + DP_ERR(dev, + "gsi post recv: failed to post rx buffer. state is %d and not QED_ROCE_QP_STATE_RTS\n", + qp->state); + return -EINVAL; + } + + if (wr->num_sge > RDMA_MAX_SGE_PER_SQ_WQE) { + DP_ERR(dev, "gsi post send: num_sge is too large (%d>%d)\n", + wr->num_sge, RDMA_MAX_SGE_PER_SQ_WQE); + rc = -EINVAL; + goto err; + } + + if (wr->opcode != IB_WR_SEND) { + DP_ERR(dev, + "gsi post send: failed due to unsupported opcode %d\n", + wr->opcode); + rc = -EINVAL; + goto err; + } + + memset(¶ms, 0, sizeof(params)); + + spin_lock_irqsave(&qp->q_lock, flags); + + rc = qedr_gsi_build_packet(dev, qp, wr, &pkt); + if (rc) { + spin_unlock_irqrestore(&qp->q_lock, flags); + goto err; + } + + rc = dev->ops->roce_ll2_tx(dev->cdev, pkt, ¶ms); + if (!rc) { + qp->wqe_wr_id[qp->sq.prod].wr_id = wr->wr_id; + qedr_inc_sw_prod(&qp->sq); + DP_DEBUG(qp->dev, QEDR_MSG_GSI, + "gsi post send: opcode=%d, in_irq=%ld, irqs_disabled=%d, wr_id=%llx\n", + wr->opcode, in_irq(), irqs_disabled(), wr->wr_id); + } else { + if (rc == QED_ROCE_TX_HEAD_FAILURE) { + /* TX failed while posting header - release resources */ + dma_free_coherent(&dev->pdev->dev, pkt->header.len, + pkt->header.vaddr, pkt->header.baddr); + kfree(pkt); + } else if (rc == QED_ROCE_TX_FRAG_FAILURE) { + /* NTD since TX failed while posting a fragment. We will + * release the resources on TX callback + */ + } + + DP_ERR(dev, "gsi post send: failed to transmit (rc=%d)\n", rc); + rc = -EAGAIN; + *bad_wr = wr; + } + + spin_unlock_irqrestore(&qp->q_lock, flags); + + if (wr->next) { + DP_ERR(dev, + "gsi post send: failed second WR. Only one WR may be passed at a time\n"); + *bad_wr = wr->next; + rc = -EINVAL; + } + + return rc; + +err: + *bad_wr = wr; + return rc; +} + +int qedr_gsi_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, + struct ib_recv_wr **bad_wr) +{ + struct qedr_dev *dev = get_qedr_dev(ibqp->device); + struct qedr_qp *qp = get_qedr_qp(ibqp); + struct qed_roce_ll2_buffer buf; + unsigned long flags; + int status = 0; + int rc; + + if ((qp->state != QED_ROCE_QP_STATE_RTR) && + (qp->state != QED_ROCE_QP_STATE_RTS)) { + *bad_wr = wr; + DP_ERR(dev, + "gsi post recv: failed to post rx buffer. state is %d and not QED_ROCE_QP_STATE_RTR/S\n", + qp->state); + return -EINVAL; + } + + memset(&buf, 0, sizeof(buf)); + + spin_lock_irqsave(&qp->q_lock, flags); + + while (wr) { + if (wr->num_sge > QEDR_GSI_MAX_RECV_SGE) { + DP_ERR(dev, + "gsi post recv: failed to post rx buffer. too many sges %d>%d\n", + wr->num_sge, QEDR_GSI_MAX_RECV_SGE); + goto err; + } + + buf.baddr = wr->sg_list[0].addr; + buf.len = wr->sg_list[0].length; + + rc = dev->ops->roce_ll2_post_rx_buffer(dev->cdev, &buf, 0, 1); + if (rc) { + DP_ERR(dev, + "gsi post recv: failed to post rx buffer (rc=%d)\n", + rc); + goto err; + } + + memset(&qp->rqe_wr_id[qp->rq.prod], 0, + sizeof(qp->rqe_wr_id[qp->rq.prod])); + qp->rqe_wr_id[qp->rq.prod].sg_list[0] = wr->sg_list[0]; + qp->rqe_wr_id[qp->rq.prod].wr_id = wr->wr_id; + + qedr_inc_sw_prod(&qp->rq); + + wr = wr->next; + } + + spin_unlock_irqrestore(&qp->q_lock, flags); + + return status; +err: + spin_unlock_irqrestore(&qp->q_lock, flags); + *bad_wr = wr; + return -ENOMEM; +} + +int qedr_gsi_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) +{ + struct qedr_dev *dev = get_qedr_dev(ibcq->device); + struct qedr_cq *cq = get_qedr_cq(ibcq); + struct qedr_qp *qp = dev->gsi_qp; + unsigned long flags; + int i = 0; + + spin_lock_irqsave(&cq->cq_lock, flags); + + while (i < num_entries && qp->rq.cons != qp->rq.gsi_cons) { + memset(&wc[i], 0, sizeof(*wc)); + + wc[i].qp = &qp->ibqp; + wc[i].wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id; + wc[i].opcode = IB_WC_RECV; + wc[i].pkey_index = 0; + wc[i].status = (qp->rqe_wr_id[qp->rq.cons].rc) ? + IB_WC_GENERAL_ERR : IB_WC_SUCCESS; + /* 0 - currently only one recv sg is supported */ + wc[i].byte_len = qp->rqe_wr_id[qp->rq.cons].sg_list[0].length; + wc[i].wc_flags |= IB_WC_GRH | IB_WC_IP_CSUM_OK; + ether_addr_copy(wc[i].smac, qp->rqe_wr_id[qp->rq.cons].smac); + wc[i].wc_flags |= IB_WC_WITH_SMAC; + if (qp->rqe_wr_id[qp->rq.cons].vlan_id) { + wc[i].wc_flags |= IB_WC_WITH_VLAN; + wc[i].vlan_id = qp->rqe_wr_id[qp->rq.cons].vlan_id; + } + + qedr_inc_sw_cons(&qp->rq); + i++; + } + + while (i < num_entries && qp->sq.cons != qp->sq.gsi_cons) { + memset(&wc[i], 0, sizeof(*wc)); + + wc[i].qp = &qp->ibqp; + wc[i].wr_id = qp->wqe_wr_id[qp->sq.cons].wr_id; + wc[i].opcode = IB_WC_SEND; + wc[i].status = IB_WC_SUCCESS; + + qedr_inc_sw_cons(&qp->sq); + i++; + } + + spin_unlock_irqrestore(&cq->cq_lock, flags); + + DP_DEBUG(dev, QEDR_MSG_GSI, + "gsi poll_cq: requested entries=%d, actual=%d, qp->rq.cons=%d, qp->rq.gsi_cons=%x, qp->sq.cons=%d, qp->sq.gsi_cons=%d, qp_num=%d\n", + num_entries, i, qp->rq.cons, qp->rq.gsi_cons, qp->sq.cons, + qp->sq.gsi_cons, qp->ibqp.qp_num); + + return i; +} diff --git a/drivers/infiniband/hw/qedr/qedr_cm.h b/drivers/infiniband/hw/qedr/qedr_cm.h index b8a8b76d77b8..9ba6e15cd93f 100644 --- a/drivers/infiniband/hw/qedr/qedr_cm.h +++ b/drivers/infiniband/hw/qedr/qedr_cm.h @@ -32,9 +32,30 @@ #ifndef LINUX_QEDR_CM_H_ #define LINUX_QEDR_CM_H_ +#define QEDR_GSI_MAX_RECV_WR (4096) +#define QEDR_GSI_MAX_SEND_WR (4096) + +#define QEDR_GSI_MAX_RECV_SGE (1) /* LL2 FW limitation */ + +#define ETH_P_ROCE (0x8915) +#define QEDR_ROCE_V2_UDP_SPORT (0000) + static inline u32 qedr_get_ipv4_from_gid(u8 *gid) { return *(u32 *)(void *)&gid[12]; } +/* RDMA CM */ +int qedr_gsi_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); +int qedr_gsi_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, + struct ib_recv_wr **bad_wr); +int qedr_gsi_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, + struct ib_send_wr **bad_wr); +struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev, + struct ib_qp_init_attr *attrs, + struct qedr_qp *qp); +void qedr_store_gsi_qp_cq(struct qedr_dev *dev, + struct qedr_qp *qp, struct ib_qp_init_attr *attrs); +int qedr_destroy_gsi_qp(struct qedr_dev *dev); +void qedr_inc_sw_gsi_cons(struct qedr_qp_hwq_info *info); #endif diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c index e4b4d47c6a2d..44ad6ae036c9 100644 --- a/drivers/infiniband/hw/qedr/verbs.c +++ b/drivers/infiniband/hw/qedr/verbs.c @@ -1502,6 +1502,15 @@ struct ib_qp *qedr_create_qp(struct ib_pd *ibpd, qedr_set_qp_init_params(dev, qp, pd, attrs); + if (attrs->qp_type == IB_QPT_GSI) { + if (udata) { + DP_ERR(dev, + "create qp: unexpected udata when creating GSI QP\n"); + goto err0; + } + return qedr_create_gsi_qp(dev, attrs, qp); + } + memset(&in_params, 0, sizeof(in_params)); if (udata) { @@ -2068,6 +2077,8 @@ int qedr_destroy_qp(struct ib_qp *ibqp) rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp); if (rc) return rc; + } else { + qedr_destroy_gsi_qp(dev); } if (ibqp->uobject && ibqp->uobject->context) { @@ -2083,6 +2094,27 @@ int qedr_destroy_qp(struct ib_qp *ibqp) return rc; } +struct ib_ah *qedr_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr) +{ + struct qedr_ah *ah; + + ah = kzalloc(sizeof(*ah), GFP_ATOMIC); + if (!ah) + return ERR_PTR(-ENOMEM); + + ah->attr = *attr; + + return &ah->ibah; +} + +int qedr_destroy_ah(struct ib_ah *ibah) +{ + struct qedr_ah *ah = get_qedr_ah(ibah); + + kfree(ah); + return 0; +} + static void free_mr_info(struct qedr_dev *dev, struct mr_info *info) { struct qedr_pbl *pbl, *tmp; @@ -2934,6 +2966,9 @@ int qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, *bad_wr = NULL; + if (qp->qp_type == IB_QPT_GSI) + return qedr_gsi_post_send(ibqp, wr, bad_wr); + spin_lock_irqsave(&qp->q_lock, flags); if ((qp->state == QED_ROCE_QP_STATE_RESET) || @@ -2990,6 +3025,9 @@ int qedr_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, unsigned long flags; int status = 0; + if (qp->qp_type == IB_QPT_GSI) + return qedr_gsi_post_recv(ibqp, wr, bad_wr); + spin_lock_irqsave(&qp->q_lock, flags); if ((qp->state == QED_ROCE_QP_STATE_RESET) || @@ -3416,6 +3454,9 @@ int qedr_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) int update = 0; int done = 0; + if (cq->cq_type == QEDR_CQ_TYPE_GSI) + return qedr_gsi_poll_cq(ibcq, num_entries, wc); + spin_lock_irqsave(&cq->cq_lock, flags); old_cons = qed_chain_get_cons_idx_u32(&cq->pbl); while (num_entries && is_valid_cqe(cq, cqe)) { diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h index fb9b751a6dde..fbc6db5a5e1f 100644 --- a/drivers/infiniband/hw/qedr/verbs.h +++ b/drivers/infiniband/hw/qedr/verbs.h @@ -70,6 +70,9 @@ int qedr_query_qp(struct ib_qp *, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_qp_init_attr *); int qedr_destroy_qp(struct ib_qp *ibqp); +struct ib_ah *qedr_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr); +int qedr_destroy_ah(struct ib_ah *ibah); + int qedr_dereg_mr(struct ib_mr *); struct ib_mr *qedr_get_dma_mr(struct ib_pd *, int acc); -- 2.20.1