1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* 3 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 4 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 5 */ 6 7 #include "rxe.h" 8 #include "rxe_loc.h" 9 10 void rxe_init_av(struct rdma_ah_attr *attr, struct rxe_av *av) 11 { 12 rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr); 13 rxe_av_fill_ip_info(av, attr); 14 memcpy(av->dmac, attr->roce.dmac, ETH_ALEN); 15 } 16 17 int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr) 18 { 19 struct rxe_port *port; 20 21 port = &rxe->port; 22 23 if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) { 24 u8 sgid_index = rdma_ah_read_grh(attr)->sgid_index; 25 26 if (sgid_index > port->attr.gid_tbl_len) { 27 pr_warn("invalid sgid index = %d\n", sgid_index); 28 return -EINVAL; 29 } 30 } 31 32 return 0; 33 } 34 35 void rxe_av_from_attr(u8 port_num, struct rxe_av *av, 36 struct rdma_ah_attr *attr) 37 { 38 const struct ib_global_route *grh = rdma_ah_read_grh(attr); 39 40 memset(av, 0, sizeof(*av)); 41 memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw)); 42 av->grh.flow_label = grh->flow_label; 43 av->grh.sgid_index = grh->sgid_index; 44 av->grh.hop_limit = grh->hop_limit; 45 av->grh.traffic_class = grh->traffic_class; 46 av->port_num = port_num; 47 } 48 49 void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr) 50 { 51 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); 52 53 attr->type = RDMA_AH_ATTR_TYPE_ROCE; 54 55 memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw)); 56 grh->flow_label = av->grh.flow_label; 57 grh->sgid_index = av->grh.sgid_index; 58 grh->hop_limit = av->grh.hop_limit; 59 grh->traffic_class = av->grh.traffic_class; 60 61 rdma_ah_set_ah_flags(attr, IB_AH_GRH); 62 rdma_ah_set_port_num(attr, av->port_num); 63 } 64 65 void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr) 66 { 67 const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr; 68 69 rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid); 70 rdma_gid2ip((struct sockaddr *)&av->dgid_addr, 71 &rdma_ah_read_grh(attr)->dgid); 72 av->network_type = rdma_gid_attr_network_type(sgid_attr); 73 } 74 75 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt) 76 { 77 if (!pkt || !pkt->qp) 78 return NULL; 79 80 if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC) 81 return &pkt->qp->pri_av; 82 83 return (pkt->wqe) ? &pkt->wqe->av : NULL; 84 } 85