1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2016 Hisilicon Limited.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * This software is available to you under a choice of one of two
5*4882a593Smuzhiyun * licenses. You may choose to be licensed under the terms of the GNU
6*4882a593Smuzhiyun * General Public License (GPL) Version 2, available from the file
7*4882a593Smuzhiyun * COPYING in the main directory of this source tree, or the
8*4882a593Smuzhiyun * OpenIB.org BSD license below:
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or
11*4882a593Smuzhiyun * without modification, are permitted provided that the following
12*4882a593Smuzhiyun * conditions are met:
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * - Redistributions of source code must retain the above
15*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
16*4882a593Smuzhiyun * disclaimer.
17*4882a593Smuzhiyun *
18*4882a593Smuzhiyun * - Redistributions in binary form must reproduce the above
19*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
20*4882a593Smuzhiyun * disclaimer in the documentation and/or other materials
21*4882a593Smuzhiyun * provided with the distribution.
22*4882a593Smuzhiyun *
23*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24*4882a593Smuzhiyun * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25*4882a593Smuzhiyun * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26*4882a593Smuzhiyun * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27*4882a593Smuzhiyun * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28*4882a593Smuzhiyun * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29*4882a593Smuzhiyun * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30*4882a593Smuzhiyun * SOFTWARE.
31*4882a593Smuzhiyun */
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #include <linux/platform_device.h>
34*4882a593Smuzhiyun #include <linux/pci.h>
35*4882a593Smuzhiyun #include <rdma/ib_addr.h>
36*4882a593Smuzhiyun #include <rdma/ib_cache.h>
37*4882a593Smuzhiyun #include "hns_roce_device.h"
38*4882a593Smuzhiyun
get_ah_udp_sport(const struct rdma_ah_attr * ah_attr)39*4882a593Smuzhiyun static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun u32 fl = ah_attr->grh.flow_label;
42*4882a593Smuzhiyun u16 sport;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun if (!fl)
45*4882a593Smuzhiyun sport = get_random_u32() %
46*4882a593Smuzhiyun (IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 -
47*4882a593Smuzhiyun IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
48*4882a593Smuzhiyun IB_ROCE_UDP_ENCAP_VALID_PORT_MIN;
49*4882a593Smuzhiyun else
50*4882a593Smuzhiyun sport = rdma_flow_label_to_udp_sport(fl);
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun return sport;
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
hns_roce_create_ah(struct ib_ah * ibah,struct rdma_ah_init_attr * init_attr,struct ib_udata * udata)55*4882a593Smuzhiyun int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
56*4882a593Smuzhiyun struct ib_udata *udata)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun struct rdma_ah_attr *ah_attr = init_attr->ah_attr;
59*4882a593Smuzhiyun const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
60*4882a593Smuzhiyun struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device);
61*4882a593Smuzhiyun struct hns_roce_ah *ah = to_hr_ah(ibah);
62*4882a593Smuzhiyun int ret = 0;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun ah->av.port = rdma_ah_get_port_num(ah_attr);
65*4882a593Smuzhiyun ah->av.gid_index = grh->sgid_index;
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun if (rdma_ah_get_static_rate(ah_attr))
68*4882a593Smuzhiyun ah->av.stat_rate = IB_RATE_10_GBPS;
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun ah->av.hop_limit = grh->hop_limit;
71*4882a593Smuzhiyun ah->av.flowlabel = grh->flow_label;
72*4882a593Smuzhiyun ah->av.udp_sport = get_ah_udp_sport(ah_attr);
73*4882a593Smuzhiyun ah->av.sl = rdma_ah_get_sl(ah_attr);
74*4882a593Smuzhiyun ah->av.tclass = get_tclass(grh);
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
77*4882a593Smuzhiyun memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun /* HIP08 needs to record vlan info in Address Vector */
80*4882a593Smuzhiyun if (hr_dev->pci_dev->revision <= PCI_REVISION_ID_HIP08) {
81*4882a593Smuzhiyun ret = rdma_read_gid_l2_fields(ah_attr->grh.sgid_attr,
82*4882a593Smuzhiyun &ah->av.vlan_id, NULL);
83*4882a593Smuzhiyun if (ret)
84*4882a593Smuzhiyun return ret;
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID;
87*4882a593Smuzhiyun }
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun return ret;
90*4882a593Smuzhiyun }
91*4882a593Smuzhiyun
hns_roce_query_ah(struct ib_ah * ibah,struct rdma_ah_attr * ah_attr)92*4882a593Smuzhiyun int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
93*4882a593Smuzhiyun {
94*4882a593Smuzhiyun struct hns_roce_ah *ah = to_hr_ah(ibah);
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun memset(ah_attr, 0, sizeof(*ah_attr));
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun rdma_ah_set_sl(ah_attr, ah->av.sl);
99*4882a593Smuzhiyun rdma_ah_set_port_num(ah_attr, ah->av.port);
100*4882a593Smuzhiyun rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate);
101*4882a593Smuzhiyun rdma_ah_set_grh(ah_attr, NULL, ah->av.flowlabel,
102*4882a593Smuzhiyun ah->av.gid_index, ah->av.hop_limit, ah->av.tclass);
103*4882a593Smuzhiyun rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid);
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun return 0;
106*4882a593Smuzhiyun }
107