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1/*
2 * Copyright (c) 2016 Hisilicon Limited.
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 */
32
33#include <linux/pci.h>
34#include <rdma/ib_addr.h>
35#include <rdma/ib_cache.h>
36#include "hnae3.h"
37#include "hns_roce_device.h"
38#include "hns_roce_hw_v2.h"
39
40static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
41{
42 u32 fl = ah_attr->grh.flow_label;
43 u16 sport;
44
45 if (!fl)
46 sport = get_random_u32_inclusive(IB_ROCE_UDP_ENCAP_VALID_PORT_MIN,
47 IB_ROCE_UDP_ENCAP_VALID_PORT_MAX);
48 else
49 sport = rdma_flow_label_to_udp_sport(fl);
50
51 return sport;
52}
53
54int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
55 struct ib_udata *udata)
56{
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 int ret = 0;
63 u32 max_sl;
64
65 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata)
66 return -EOPNOTSUPP;
67
68 ah->av.port = rdma_ah_get_port_num(ah_attr);
69 ah->av.gid_index = grh->sgid_index;
70
71 if (rdma_ah_get_static_rate(ah_attr))
72 ah->av.stat_rate = IB_RATE_10_GBPS;
73
74 ah->av.hop_limit = grh->hop_limit;
75 ah->av.flowlabel = grh->flow_label;
76 ah->av.udp_sport = get_ah_udp_sport(ah_attr);
77 ah->av.tclass = get_tclass(grh);
78
79 ah->av.sl = rdma_ah_get_sl(ah_attr);
80 max_sl = min_t(u32, MAX_SERVICE_LEVEL, hr_dev->caps.sl_num - 1);
81 if (unlikely(ah->av.sl > max_sl)) {
82 ibdev_err_ratelimited(&hr_dev->ib_dev,
83 "failed to set sl, sl (%u) shouldn't be larger than %u.\n",
84 ah->av.sl, max_sl);
85 return -EINVAL;
86 }
87
88 memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
89 memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
90
91 /* HIP08 needs to record vlan info in Address Vector */
92 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
93 ret = rdma_read_gid_l2_fields(ah_attr->grh.sgid_attr,
94 &ah->av.vlan_id, NULL);
95 if (ret)
96 goto err_out;
97
98 ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID;
99 }
100
101 if (udata) {
102 memcpy(resp.dmac, ah_attr->roce.dmac, ETH_ALEN);
103 ret = ib_copy_to_udata(udata, &resp,
104 min(udata->outlen, sizeof(resp)));
105 }
106
107err_out:
108 if (ret)
109 atomic64_inc(&hr_dev->dfx_cnt[HNS_ROCE_DFX_AH_CREATE_ERR_CNT]);
110
111 return ret;
112}
113
114int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
115{
116 struct hns_roce_ah *ah = to_hr_ah(ibah);
117
118 memset(ah_attr, 0, sizeof(*ah_attr));
119
120 rdma_ah_set_sl(ah_attr, ah->av.sl);
121 rdma_ah_set_port_num(ah_attr, ah->av.port);
122 rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate);
123 rdma_ah_set_grh(ah_attr, NULL, ah->av.flowlabel,
124 ah->av.gid_index, ah->av.hop_limit, ah->av.tclass);
125 rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid);
126
127 return 0;
128}
1/*
2 * Copyright (c) 2016 Hisilicon Limited.
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 */
32
33#include <linux/platform_device.h>
34#include <rdma/ib_addr.h>
35#include <rdma/ib_cache.h>
36#include "hns_roce_device.h"
37
38#define HNS_ROCE_PORT_NUM_SHIFT 24
39#define HNS_ROCE_VLAN_SL_BIT_MASK 7
40#define HNS_ROCE_VLAN_SL_SHIFT 13
41
42struct ib_ah *hns_roce_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *ah_attr,
43 struct ib_udata *udata)
44{
45 struct hns_roce_dev *hr_dev = to_hr_dev(ibpd->device);
46 struct device *dev = &hr_dev->pdev->dev;
47 struct ib_gid_attr gid_attr;
48 struct hns_roce_ah *ah;
49 u16 vlan_tag = 0xffff;
50 struct in6_addr in6;
51 union ib_gid sgid;
52 int ret;
53
54 ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
55 if (!ah)
56 return ERR_PTR(-ENOMEM);
57
58 /* Get mac address */
59 memcpy(&in6, ah_attr->grh.dgid.raw, sizeof(ah_attr->grh.dgid.raw));
60 if (rdma_is_multicast_addr(&in6))
61 rdma_get_mcast_mac(&in6, ah->av.mac);
62 else
63 memcpy(ah->av.mac, ah_attr->dmac, sizeof(ah_attr->dmac));
64
65 /* Get source gid */
66 ret = ib_get_cached_gid(ibpd->device, ah_attr->port_num,
67 ah_attr->grh.sgid_index, &sgid, &gid_attr);
68 if (ret) {
69 dev_err(dev, "get sgid failed! ret = %d\n", ret);
70 kfree(ah);
71 return ERR_PTR(ret);
72 }
73
74 if (gid_attr.ndev) {
75 if (is_vlan_dev(gid_attr.ndev))
76 vlan_tag = vlan_dev_vlan_id(gid_attr.ndev);
77 dev_put(gid_attr.ndev);
78 }
79
80 if (vlan_tag < 0x1000)
81 vlan_tag |= (ah_attr->sl & HNS_ROCE_VLAN_SL_BIT_MASK) <<
82 HNS_ROCE_VLAN_SL_SHIFT;
83
84 ah->av.port_pd = cpu_to_be32(to_hr_pd(ibpd)->pdn | (ah_attr->port_num <<
85 HNS_ROCE_PORT_NUM_SHIFT));
86 ah->av.gid_index = ah_attr->grh.sgid_index;
87 ah->av.vlan = cpu_to_le16(vlan_tag);
88 dev_dbg(dev, "gid_index = 0x%x,vlan = 0x%x\n", ah->av.gid_index,
89 ah->av.vlan);
90
91 if (ah_attr->static_rate)
92 ah->av.stat_rate = IB_RATE_10_GBPS;
93
94 memcpy(ah->av.dgid, ah_attr->grh.dgid.raw, HNS_ROCE_GID_SIZE);
95 ah->av.sl_tclass_flowlabel = cpu_to_le32(ah_attr->sl <<
96 HNS_ROCE_SL_SHIFT);
97
98 return &ah->ibah;
99}
100
101int hns_roce_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
102{
103 struct hns_roce_ah *ah = to_hr_ah(ibah);
104
105 memset(ah_attr, 0, sizeof(*ah_attr));
106
107 ah_attr->sl = le32_to_cpu(ah->av.sl_tclass_flowlabel) >>
108 HNS_ROCE_SL_SHIFT;
109 ah_attr->port_num = le32_to_cpu(ah->av.port_pd) >>
110 HNS_ROCE_PORT_NUM_SHIFT;
111 ah_attr->static_rate = ah->av.stat_rate;
112 ah_attr->ah_flags = IB_AH_GRH;
113 ah_attr->grh.traffic_class = le32_to_cpu(ah->av.sl_tclass_flowlabel) >>
114 HNS_ROCE_TCLASS_SHIFT;
115 ah_attr->grh.flow_label = le32_to_cpu(ah->av.sl_tclass_flowlabel) &
116 HNS_ROCE_FLOW_LABLE_MASK;
117 ah_attr->grh.hop_limit = ah->av.hop_limit;
118 ah_attr->grh.sgid_index = ah->av.gid_index;
119 memcpy(ah_attr->grh.dgid.raw, ah->av.dgid, HNS_ROCE_GID_SIZE);
120
121 return 0;
122}
123
124int hns_roce_destroy_ah(struct ib_ah *ah)
125{
126 kfree(to_hr_ah(ah));
127
128 return 0;
129}