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33#include <linux/pci.h>
34#include <rdma/ib_addr.h>
35#include <rdma/ib_cache.h>
36#include "hns_roce_device.h"
37
38static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
39{
40 u32 fl = ah_attr->grh.flow_label;
41 u16 sport;
42
43 if (!fl)
44 sport = get_random_u32() %
45 (IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 -
46 IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
47 IB_ROCE_UDP_ENCAP_VALID_PORT_MIN;
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_ah *ah = to_hr_ah(ibah);
61 int ret = 0;
62
63 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata)
64 return -EOPNOTSUPP;
65
66 ah->av.port = rdma_ah_get_port_num(ah_attr);
67 ah->av.gid_index = grh->sgid_index;
68
69 if (rdma_ah_get_static_rate(ah_attr))
70 ah->av.stat_rate = IB_RATE_10_GBPS;
71
72 ah->av.hop_limit = grh->hop_limit;
73 ah->av.flowlabel = grh->flow_label;
74 ah->av.udp_sport = get_ah_udp_sport(ah_attr);
75 ah->av.sl = rdma_ah_get_sl(ah_attr);
76 ah->av.tclass = get_tclass(grh);
77
78 memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
79 memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
80
81
82 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
83 ret = rdma_read_gid_l2_fields(ah_attr->grh.sgid_attr,
84 &ah->av.vlan_id, NULL);
85 if (ret)
86 return ret;
87
88 ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID;
89 }
90
91 return ret;
92}
93
94int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
95{
96 struct hns_roce_ah *ah = to_hr_ah(ibah);
97
98 memset(ah_attr, 0, sizeof(*ah_attr));
99
100 rdma_ah_set_sl(ah_attr, ah->av.sl);
101 rdma_ah_set_port_num(ah_attr, ah->av.port);
102 rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate);
103 rdma_ah_set_grh(ah_attr, NULL, ah->av.flowlabel,
104 ah->av.gid_index, ah->av.hop_limit, ah->av.tclass);
105 rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid);
106
107 return 0;
108}
109