diff options
author | Kalderon, Michal <Michal.Kalderon@cavium.com> | 2017-07-26 14:41:51 +0300 |
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committer | Doug Ledford <dledford@redhat.com> | 2017-08-18 19:25:18 +0300 |
commit | 99d195cc089e689e54bad13c9bdf88e90d158892 (patch) | |
tree | ca5be14bbde2e8958d0ebae8ac5ce8d8b20aaa83 /drivers/infiniband/hw/qedr/qedr_cm.c | |
parent | 7c3d2bc4b9c283c3ad285dee9bd00c7ce513ad49 (diff) | |
download | linux-99d195cc089e689e54bad13c9bdf88e90d158892.tar.xz |
RDMA/qedr: Rename the qedr_cm file as a preparation for iWARP support
The main differences between iWARP and RoCE lay in the communication
management functions. These will be placed in separate files.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/qedr/qedr_cm.c')
-rw-r--r-- | drivers/infiniband/hw/qedr/qedr_cm.c | 744 |
1 files changed, 0 insertions, 744 deletions
diff --git a/drivers/infiniband/hw/qedr/qedr_cm.c b/drivers/infiniband/hw/qedr/qedr_cm.c deleted file mode 100644 index 4689e802b332..000000000000 --- a/drivers/infiniband/hw/qedr/qedr_cm.c +++ /dev/null @@ -1,744 +0,0 @@ -/* 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 <linux/dma-mapping.h> -#include <linux/crc32.h> -#include <linux/iommu.h> -#include <net/ip.h> -#include <net/ipv6.h> -#include <net/udp.h> - -#include <rdma/ib_verbs.h> -#include <rdma/ib_user_verbs.h> -#include <rdma/iw_cm.h> -#include <rdma/ib_umem.h> -#include <rdma/ib_addr.h> -#include <rdma/ib_cache.h> - -#include <linux/qed/qed_if.h> -#include <linux/qed/qed_rdma_if.h> -#include "qedr.h" -#include "verbs.h" -#include <rdma/qedr-abi.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_complete_tx_packet(void *cxt, - u8 connection_handle, - void *cookie, - dma_addr_t first_frag_addr, - bool b_last_fragment, bool b_last_packet) -{ - struct qedr_dev *dev = (struct qedr_dev *)cxt; - struct qed_roce_ll2_packet *pkt = cookie; - 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) - (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context); -} - -void qedr_ll2_complete_rx_packet(void *cxt, - struct qed_ll2_comp_rx_data *data) -{ - struct qedr_dev *dev = (struct qedr_dev *)cxt; - 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 = data->u.data_length_error ? - -EINVAL : 0; - qp->rqe_wr_id[qp->rq.gsi_cons].vlan_id = data->vlan; - /* note: length stands for data length i.e. GRH is excluded */ - qp->rqe_wr_id[qp->rq.gsi_cons].sg_list[0].length = - data->length.data_length; - *((u32 *)&qp->rqe_wr_id[qp->rq.gsi_cons].smac[0]) = - ntohl(data->opaque_data_0); - *((u16 *)&qp->rqe_wr_id[qp->rq.gsi_cons].smac[4]) = - ntohs((u16)data->opaque_data_1); - - qedr_inc_sw_gsi_cons(&qp->rq); - - spin_unlock_irqrestore(&qp->q_lock, flags); - - if (cq->ibcq.comp_handler) - (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context); -} - -void qedr_ll2_release_rx_packet(void *cxt, - u8 connection_handle, - void *cookie, - dma_addr_t rx_buf_addr, bool b_last_packet) -{ - /* Do nothing... */ -} - -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; -} - -static int qedr_ll2_post_tx(struct qedr_dev *dev, - struct qed_roce_ll2_packet *pkt) -{ - enum qed_ll2_roce_flavor_type roce_flavor; - struct qed_ll2_tx_pkt_info ll2_tx_pkt; - int rc; - int i; - - memset(&ll2_tx_pkt, 0, sizeof(ll2_tx_pkt)); - - roce_flavor = (pkt->roce_mode == ROCE_V1) ? - QED_LL2_ROCE : QED_LL2_RROCE; - - if (pkt->roce_mode == ROCE_V2_IPV4) - ll2_tx_pkt.enable_ip_cksum = 1; - - ll2_tx_pkt.num_of_bds = 1 /* hdr */ + pkt->n_seg; - ll2_tx_pkt.vlan = 0; - ll2_tx_pkt.tx_dest = pkt->tx_dest; - ll2_tx_pkt.qed_roce_flavor = roce_flavor; - ll2_tx_pkt.first_frag = pkt->header.baddr; - ll2_tx_pkt.first_frag_len = pkt->header.len; - ll2_tx_pkt.cookie = pkt; - - /* tx header */ - rc = dev->ops->ll2_prepare_tx_packet(dev->rdma_ctx, - dev->gsi_ll2_handle, - &ll2_tx_pkt, 1); - if (rc) { - /* TX failed while posting header - release resources */ - dma_free_coherent(&dev->pdev->dev, pkt->header.len, - pkt->header.vaddr, pkt->header.baddr); - kfree(pkt); - - DP_ERR(dev, "roce ll2 tx: header failed (rc=%d)\n", rc); - return rc; - } - - /* tx payload */ - for (i = 0; i < pkt->n_seg; i++) { - rc = dev->ops->ll2_set_fragment_of_tx_packet( - dev->rdma_ctx, - dev->gsi_ll2_handle, - pkt->payload[i].baddr, - pkt->payload[i].len); - - if (rc) { - /* if failed not much to do here, partial packet has - * been posted we can't free memory, will need to wait - * for completion - */ - DP_ERR(dev, "ll2 tx: payload failed (rc=%d)\n", rc); - return rc; - } - } - - return 0; -} - -int qedr_ll2_stop(struct qedr_dev *dev) -{ - int rc; - - if (dev->gsi_ll2_handle == QED_LL2_UNUSED_HANDLE) - return 0; - - /* remove LL2 MAC address filter */ - rc = dev->ops->ll2_set_mac_filter(dev->cdev, - dev->gsi_ll2_mac_address, NULL); - - rc = dev->ops->ll2_terminate_connection(dev->rdma_ctx, - dev->gsi_ll2_handle); - if (rc) - DP_ERR(dev, "Failed to terminate LL2 connection (rc=%d)\n", rc); - - dev->ops->ll2_release_connection(dev->rdma_ctx, dev->gsi_ll2_handle); - - dev->gsi_ll2_handle = QED_LL2_UNUSED_HANDLE; - - return rc; -} - -int qedr_ll2_start(struct qedr_dev *dev, - struct ib_qp_init_attr *attrs, struct qedr_qp *qp) -{ - struct qed_ll2_acquire_data data; - struct qed_ll2_cbs cbs; - int rc; - - /* configure and start LL2 */ - cbs.rx_comp_cb = qedr_ll2_complete_rx_packet; - cbs.tx_comp_cb = qedr_ll2_complete_tx_packet; - cbs.rx_release_cb = qedr_ll2_release_rx_packet; - cbs.tx_release_cb = qedr_ll2_complete_tx_packet; - cbs.cookie = dev; - - memset(&data, 0, sizeof(data)); - data.input.conn_type = QED_LL2_TYPE_ROCE; - data.input.mtu = dev->ndev->mtu; - data.input.rx_num_desc = attrs->cap.max_recv_wr; - data.input.rx_drop_ttl0_flg = true; - data.input.rx_vlan_removal_en = false; - data.input.tx_num_desc = attrs->cap.max_send_wr; - data.input.tx_tc = 0; - data.input.tx_dest = QED_LL2_TX_DEST_NW; - data.input.ai_err_packet_too_big = QED_LL2_DROP_PACKET; - data.input.ai_err_no_buf = QED_LL2_DROP_PACKET; - data.input.gsi_enable = 1; - data.p_connection_handle = &dev->gsi_ll2_handle; - data.cbs = &cbs; - - rc = dev->ops->ll2_acquire_connection(dev->rdma_ctx, &data); - if (rc) { - DP_ERR(dev, - "ll2 start: failed to acquire LL2 connection (rc=%d)\n", - rc); - return rc; - } - - rc = dev->ops->ll2_establish_connection(dev->rdma_ctx, - dev->gsi_ll2_handle); - if (rc) { - DP_ERR(dev, - "ll2 start: failed to establish LL2 connection (rc=%d)\n", - rc); - goto err1; - } - - rc = dev->ops->ll2_set_mac_filter(dev->cdev, NULL, dev->ndev->dev_addr); - if (rc) - goto err2; - - return 0; - -err2: - dev->ops->ll2_terminate_connection(dev->rdma_ctx, dev->gsi_ll2_handle); -err1: - dev->ops->ll2_release_connection(dev->rdma_ctx, dev->gsi_ll2_handle); - - return rc; -} - -struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev, - struct ib_qp_init_attr *attrs, - struct qedr_qp *qp) -{ - int rc; - - rc = qedr_check_gsi_qp_attrs(dev, attrs); - if (rc) - return ERR_PTR(rc); - - rc = qedr_ll2_start(dev, attrs, qp); - 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 = qedr_ll2_stop(dev); - 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) -{ - return qedr_ll2_stop(dev); -} - -#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 rdma_ah_attr *ah_attr = &get_qedr_ah(ud_wr(swr)->ah)->attr; - const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr); - 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, rdma_ah_get_port_num(ah_attr), - grh->sgid_index, &sgid, &sgid_attr); - if (rc) { - DP_ERR(dev, - "gsi post send: failed to get cached GID (port=%d, ix=%d)\n", - rdma_ah_get_port_num(ah_attr), - grh->sgid_index); - return rc; - } - - if (sgid_attr.ndev) { - vlan_id = rdma_vlan_dev_vlan_id(sgid_attr.ndev); - if (vlan_id < VLAN_CFI_MASK) - has_vlan = true; - - dev_put(sgid_attr.ndev); - } - - if (!memcmp(&sgid, &zgid, sizeof(sgid))) { - DP_ERR(dev, "gsi post send: GID not found GID index %d\n", - 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_IBOE; - *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->roce.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(grh->flow_label); - udh->ip4.frag_off = htons(IP_DF); - udh->ip4.ttl = grh->hop_limit; - - ipv4_addr = qedr_get_ipv4_from_gid(sgid.raw); - udh->ip4.saddr = ipv4_addr; - ipv4_addr = qedr_get_ipv4_from_gid(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_LB; - else - packet->tx_dest = QED_ROCE_LL2_TX_DEST_NW; - - 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 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; - } - - 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 = qedr_ll2_post_tx(dev, pkt); - - 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 { - 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); - unsigned long flags; - int rc = 0; - - 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; - } - - 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; - } - - rc = dev->ops->ll2_post_rx_buffer(dev->rdma_ctx, - dev->gsi_ll2_handle, - wr->sg_list[0].addr, - wr->sg_list[0].length, - 0 /* cookie */, - 1 /* notify_fw */); - 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 rc; -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; -} |