2 * Copyright (c) 2016 Hisilicon Limited.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/pci.h>
34 #include <rdma/ib_addr.h>
35 #include <rdma/ib_cache.h>
37 #include "hns_roce_device.h"
38 #include "hns_roce_hw_v2.h"
40 static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
42 u32 fl = ah_attr->grh.flow_label;
46 sport = get_random_u32_inclusive(IB_ROCE_UDP_ENCAP_VALID_PORT_MIN,
47 IB_ROCE_UDP_ENCAP_VALID_PORT_MAX);
49 sport = rdma_flow_label_to_udp_sport(fl);
54 int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
55 struct ib_udata *udata)
57 struct rdma_ah_attr *ah_attr = init_attr->ah_attr;
58 const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
59 struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device);
60 struct hns_roce_ib_create_ah_resp resp = {};
61 struct hns_roce_ah *ah = to_hr_ah(ibah);
62 u8 tclass = get_tclass(grh);
67 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata) {
72 ah->av.port = rdma_ah_get_port_num(ah_attr);
73 ah->av.gid_index = grh->sgid_index;
75 if (rdma_ah_get_static_rate(ah_attr))
76 ah->av.stat_rate = IB_RATE_10_GBPS;
78 ah->av.hop_limit = grh->hop_limit;
79 ah->av.flowlabel = grh->flow_label;
80 ah->av.udp_sport = get_ah_udp_sport(ah_attr);
81 ah->av.tclass = tclass;
83 ret = hr_dev->hw->get_dscp(hr_dev, tclass, &tc_mode, &priority);
84 if (ret == -EOPNOTSUPP)
87 if (ret && grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
90 if (tc_mode == HNAE3_TC_MAP_MODE_DSCP &&
91 grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
94 ah->av.sl = rdma_ah_get_sl(ah_attr);
96 if (!check_sl_valid(hr_dev, ah->av.sl)) {
101 memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
102 memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
104 /* HIP08 needs to record vlan info in Address Vector */
105 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
106 ret = rdma_read_gid_l2_fields(ah_attr->grh.sgid_attr,
107 &ah->av.vlan_id, NULL);
111 ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID;
115 resp.priority = ah->av.sl;
116 resp.tc_mode = tc_mode;
117 memcpy(resp.dmac, ah_attr->roce.dmac, ETH_ALEN);
118 ret = ib_copy_to_udata(udata, &resp,
119 min(udata->outlen, sizeof(resp)));
124 atomic64_inc(&hr_dev->dfx_cnt[HNS_ROCE_DFX_AH_CREATE_ERR_CNT]);
129 int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
131 struct hns_roce_ah *ah = to_hr_ah(ibah);
133 memset(ah_attr, 0, sizeof(*ah_attr));
135 rdma_ah_set_sl(ah_attr, ah->av.sl);
136 rdma_ah_set_port_num(ah_attr, ah->av.port);
137 rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate);
138 rdma_ah_set_grh(ah_attr, NULL, ah->av.flowlabel,
139 ah->av.gid_index, ah->av.hop_limit, ah->av.tclass);
140 rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid);