// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB /* * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. */ #include "rxe.h" #include "rxe_loc.h" void rxe_init_av(struct rdma_ah_attr *attr, struct rxe_av *av) { rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr); rxe_av_fill_ip_info(av, attr); memcpy(av->dmac, attr->roce.dmac, ETH_ALEN); } int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr) { const struct ib_global_route *grh = rdma_ah_read_grh(attr); struct rxe_port *port; int type; port = &rxe->port; if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) { if (grh->sgid_index > port->attr.gid_tbl_len) { pr_warn("invalid sgid index = %d\n", grh->sgid_index); return -EINVAL; } type = rdma_gid_attr_network_type(grh->sgid_attr); if (type < RDMA_NETWORK_IPV4 || type > RDMA_NETWORK_IPV6) { pr_warn("invalid network type for rdma_rxe = %d\n", type); return -EINVAL; } } return 0; } void rxe_av_from_attr(u8 port_num, struct rxe_av *av, struct rdma_ah_attr *attr) { const struct ib_global_route *grh = rdma_ah_read_grh(attr); memset(av, 0, sizeof(*av)); memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw)); av->grh.flow_label = grh->flow_label; av->grh.sgid_index = grh->sgid_index; av->grh.hop_limit = grh->hop_limit; av->grh.traffic_class = grh->traffic_class; av->port_num = port_num; } void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr) { struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); attr->type = RDMA_AH_ATTR_TYPE_ROCE; memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw)); grh->flow_label = av->grh.flow_label; grh->sgid_index = av->grh.sgid_index; grh->hop_limit = av->grh.hop_limit; grh->traffic_class = av->grh.traffic_class; rdma_ah_set_ah_flags(attr, IB_AH_GRH); rdma_ah_set_port_num(attr, av->port_num); } void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr) { const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr; int ibtype; int type; rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid); rdma_gid2ip((struct sockaddr *)&av->dgid_addr, &rdma_ah_read_grh(attr)->dgid); ibtype = rdma_gid_attr_network_type(sgid_attr); switch (ibtype) { case RDMA_NETWORK_IPV4: type = RXE_NETWORK_TYPE_IPV4; break; case RDMA_NETWORK_IPV6: type = RXE_NETWORK_TYPE_IPV6; break; default: /* not reached - checked in rxe_av_chk_attr */ type = 0; break; } av->network_type = type; } struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt) { if (!pkt || !pkt->qp) return NULL; if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC) return &pkt->qp->pri_av; return (pkt->wqe) ? &pkt->wqe->wr.wr.ud.av : NULL; }