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
rxe_init_av(struct rdma_ah_attr * attr,struct rxe_av * av)37 void rxe_init_av(struct rdma_ah_attr *attr, struct rxe_av *av)
38 {
39 rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr);
40 rxe_av_fill_ip_info(av, attr);
41 memcpy(av->dmac, attr->roce.dmac, ETH_ALEN);
42 }
43
rxe_av_chk_attr(struct rxe_dev * rxe,struct rdma_ah_attr * attr)44 int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr)
45 {
46 struct rxe_port *port;
47
48 port = &rxe->port;
49
50 if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) {
51 u8 sgid_index = rdma_ah_read_grh(attr)->sgid_index;
52
53 if (sgid_index > port->attr.gid_tbl_len) {
54 pr_warn("invalid sgid index = %d\n", sgid_index);
55 return -EINVAL;
56 }
57 }
58
59 return 0;
60 }
61
rxe_av_from_attr(u8 port_num,struct rxe_av * av,struct rdma_ah_attr * attr)62 void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
63 struct rdma_ah_attr *attr)
64 {
65 const struct ib_global_route *grh = rdma_ah_read_grh(attr);
66
67 memset(av, 0, sizeof(*av));
68 memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw));
69 av->grh.flow_label = grh->flow_label;
70 av->grh.sgid_index = grh->sgid_index;
71 av->grh.hop_limit = grh->hop_limit;
72 av->grh.traffic_class = grh->traffic_class;
73 av->port_num = port_num;
74 }
75
rxe_av_to_attr(struct rxe_av * av,struct rdma_ah_attr * attr)76 void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr)
77 {
78 struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
79
80 attr->type = RDMA_AH_ATTR_TYPE_ROCE;
81
82 memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw));
83 grh->flow_label = av->grh.flow_label;
84 grh->sgid_index = av->grh.sgid_index;
85 grh->hop_limit = av->grh.hop_limit;
86 grh->traffic_class = av->grh.traffic_class;
87
88 rdma_ah_set_ah_flags(attr, IB_AH_GRH);
89 rdma_ah_set_port_num(attr, av->port_num);
90 }
91
rxe_av_fill_ip_info(struct rxe_av * av,struct rdma_ah_attr * attr)92 void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr)
93 {
94 const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr;
95
96 rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
97 rdma_gid2ip((struct sockaddr *)&av->dgid_addr,
98 &rdma_ah_read_grh(attr)->dgid);
99 av->network_type = rdma_gid_attr_network_type(sgid_attr);
100 }
101
rxe_get_av(struct rxe_pkt_info * pkt)102 struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt)
103 {
104 if (!pkt || !pkt->qp)
105 return NULL;
106
107 if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC)
108 return &pkt->qp->pri_av;
109
110 return (pkt->wqe) ? &pkt->wqe->av : NULL;
111 }
112