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 if (rdma_ah_get_port_num(attr) != 1) { 42 pr_info("invalid port_num = %d\n", rdma_ah_get_port_num(attr)); 43 return -EINVAL; 44 } 45 46 port = &rxe->port; 47 48 if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) { 49 u8 sgid_index = rdma_ah_read_grh(attr)->sgid_index; 50 51 if (sgid_index > port->attr.gid_tbl_len) { 52 pr_info("invalid sgid index = %d\n", sgid_index); 53 return -EINVAL; 54 } 55 } 56 57 return 0; 58 } 59 60 int rxe_av_from_attr(struct rxe_dev *rxe, u8 port_num, 61 struct rxe_av *av, struct rdma_ah_attr *attr) 62 { 63 memset(av, 0, sizeof(*av)); 64 memcpy(&av->grh, rdma_ah_read_grh(attr), 65 sizeof(*rdma_ah_read_grh(attr))); 66 av->port_num = port_num; 67 return 0; 68 } 69 70 int rxe_av_to_attr(struct rxe_dev *rxe, struct rxe_av *av, 71 struct rdma_ah_attr *attr) 72 { 73 attr->type = RDMA_AH_ATTR_TYPE_ROCE; 74 memcpy(rdma_ah_retrieve_grh(attr), &av->grh, sizeof(av->grh)); 75 rdma_ah_set_ah_flags(attr, IB_AH_GRH); 76 rdma_ah_set_port_num(attr, av->port_num); 77 return 0; 78 } 79 80 int rxe_av_fill_ip_info(struct rxe_dev *rxe, 81 struct rxe_av *av, 82 struct rdma_ah_attr *attr, 83 struct ib_gid_attr *sgid_attr, 84 union ib_gid *sgid) 85 { 86 rdma_gid2ip(&av->sgid_addr._sockaddr, sgid); 87 rdma_gid2ip(&av->dgid_addr._sockaddr, &rdma_ah_read_grh(attr)->dgid); 88 av->network_type = ib_gid_to_network_type(sgid_attr->gid_type, sgid); 89 90 return 0; 91 } 92 93 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt) 94 { 95 if (!pkt || !pkt->qp) 96 return NULL; 97 98 if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC) 99 return &pkt->qp->pri_av; 100 101 return (pkt->wqe) ? &pkt->wqe->av : NULL; 102 } 103