1 /* 2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #include "rxe.h" 35 #include "rxe_loc.h" 36 37 int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr) 38 { 39 struct rxe_port *port; 40 41 port = &rxe->port; 42 43 if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) { 44 u8 sgid_index = rdma_ah_read_grh(attr)->sgid_index; 45 46 if (sgid_index > port->attr.gid_tbl_len) { 47 pr_warn("invalid sgid index = %d\n", sgid_index); 48 return -EINVAL; 49 } 50 } 51 52 return 0; 53 } 54 55 void rxe_av_from_attr(u8 port_num, struct rxe_av *av, 56 struct rdma_ah_attr *attr) 57 { 58 const struct ib_global_route *grh = rdma_ah_read_grh(attr); 59 60 memset(av, 0, sizeof(*av)); 61 memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw)); 62 av->grh.flow_label = grh->flow_label; 63 av->grh.sgid_index = grh->sgid_index; 64 av->grh.hop_limit = grh->hop_limit; 65 av->grh.traffic_class = grh->traffic_class; 66 av->port_num = port_num; 67 } 68 69 void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr) 70 { 71 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); 72 73 attr->type = RDMA_AH_ATTR_TYPE_ROCE; 74 75 memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw)); 76 grh->flow_label = av->grh.flow_label; 77 grh->sgid_index = av->grh.sgid_index; 78 grh->hop_limit = av->grh.hop_limit; 79 grh->traffic_class = av->grh.traffic_class; 80 81 rdma_ah_set_ah_flags(attr, IB_AH_GRH); 82 rdma_ah_set_port_num(attr, av->port_num); 83 } 84 85 void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr) 86 { 87 const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr; 88 89 rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid); 90 rdma_gid2ip((struct sockaddr *)&av->dgid_addr, 91 &rdma_ah_read_grh(attr)->dgid); 92 av->network_type = rdma_gid_attr_network_type(sgid_attr); 93 } 94 95 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt) 96 { 97 if (!pkt || !pkt->qp) 98 return NULL; 99 100 if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC) 101 return &pkt->qp->pri_av; 102 103 return (pkt->wqe) ? &pkt->wqe->av : NULL; 104 } 105