145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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/*
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* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
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*/
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#include "rxe.h"
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#include "rxe_loc.h"
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void rxe_init_av(struct rdma_ah_attr *attr, struct rxe_av *av)
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{
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rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr);
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rxe_av_fill_ip_info(av, attr);
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memcpy(av->dmac, attr->roce.dmac, ETH_ALEN);
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}
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int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr)
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{
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const struct ib_global_route *grh = rdma_ah_read_grh(attr);
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struct rxe_port *port;
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int type;
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port = &rxe->port;
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if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) {
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if (grh->sgid_index > port->attr.gid_tbl_len) {
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pr_warn("invalid sgid index = %d\n",
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grh->sgid_index);
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return -EINVAL;
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}
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type = rdma_gid_attr_network_type(grh->sgid_attr);
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if (type < RDMA_NETWORK_IPV4 ||
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type > RDMA_NETWORK_IPV6) {
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pr_warn("invalid network type for rdma_rxe = %d\n",
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type);
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return -EINVAL;
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}
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}
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return 0;
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}
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void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
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struct rdma_ah_attr *attr)
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{
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const struct ib_global_route *grh = rdma_ah_read_grh(attr);
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memset(av, 0, sizeof(*av));
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memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw));
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av->grh.flow_label = grh->flow_label;
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av->grh.sgid_index = grh->sgid_index;
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av->grh.hop_limit = grh->hop_limit;
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av->grh.traffic_class = grh->traffic_class;
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av->port_num = port_num;
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}
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void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr)
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{
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struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
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attr->type = RDMA_AH_ATTR_TYPE_ROCE;
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memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw));
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grh->flow_label = av->grh.flow_label;
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grh->sgid_index = av->grh.sgid_index;
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grh->hop_limit = av->grh.hop_limit;
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grh->traffic_class = av->grh.traffic_class;
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rdma_ah_set_ah_flags(attr, IB_AH_GRH);
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rdma_ah_set_port_num(attr, av->port_num);
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}
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void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr)
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{
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const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr;
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int ibtype;
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int type;
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rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
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rdma_gid2ip((struct sockaddr *)&av->dgid_addr,
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&rdma_ah_read_grh(attr)->dgid);
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ibtype = rdma_gid_attr_network_type(sgid_attr);
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switch (ibtype) {
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case RDMA_NETWORK_IPV4:
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type = RXE_NETWORK_TYPE_IPV4;
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break;
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case RDMA_NETWORK_IPV6:
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type = RXE_NETWORK_TYPE_IPV6;
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break;
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default:
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/* not reached - checked in rxe_av_chk_attr */
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type = 0;
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break;
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}
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av->network_type = type;
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}
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struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt, struct rxe_ah **ahp)
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{
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struct rxe_ah *ah;
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u32 ah_num;
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if (ahp)
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*ahp = NULL;
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if (!pkt || !pkt->qp)
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return NULL;
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if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC)
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return &pkt->qp->pri_av;
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if (!pkt->wqe)
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return NULL;
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ah_num = pkt->wqe->wr.wr.ud.ah_num;
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if (ah_num) {
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/* only new user provider or kernel client */
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ah = rxe_pool_get_index(&pkt->rxe->ah_pool, ah_num);
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if (!ah) {
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pr_warn("Unable to find AH matching ah_num\n");
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return NULL;
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}
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if (rxe_ah_pd(ah) != pkt->qp->pd) {
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pr_warn("PDs don't match for AH and QP\n");
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rxe_put(ah);
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return NULL;
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}
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if (ahp)
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*ahp = ah;
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else
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rxe_put(ah);
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return &ah->av;
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}
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/* only old user provider for UD sends*/
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return &pkt->wqe->wr.wr.ud.av;
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}
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