1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2 /*
3 * Copyright(c) 2017 - 2020 Intel Corporation.
4 */
5
6 #ifndef _OPA_VNIC_H
7 #define _OPA_VNIC_H
8
9 /*
10 * This file contains Intel Omni-Path (OPA) Virtual Network Interface
11 * Controller (VNIC) specific declarations.
12 */
13
14 #include <rdma/ib_verbs.h>
15
16 /* 16 header bytes + 2 reserved bytes */
17 #define OPA_VNIC_L2_HDR_LEN (16 + 2)
18
19 #define OPA_VNIC_L4_HDR_LEN 2
20
21 #define OPA_VNIC_HDR_LEN (OPA_VNIC_L2_HDR_LEN + \
22 OPA_VNIC_L4_HDR_LEN)
23
24 #define OPA_VNIC_L4_ETHR 0x78
25
26 #define OPA_VNIC_ICRC_LEN 4
27 #define OPA_VNIC_TAIL_LEN 1
28 #define OPA_VNIC_ICRC_TAIL_LEN (OPA_VNIC_ICRC_LEN + OPA_VNIC_TAIL_LEN)
29
30 #define OPA_VNIC_SKB_MDATA_LEN 4
31 #define OPA_VNIC_SKB_MDATA_ENCAP_ERR 0x1
32
33 /* opa vnic rdma netdev's private data structure */
34 struct opa_vnic_rdma_netdev {
35 struct rdma_netdev rn; /* keep this first */
36 /* followed by device private data */
37 char *dev_priv[];
38 };
39
40 static inline void *opa_vnic_priv(const struct net_device *dev)
41 {
42 struct rdma_netdev *rn = netdev_priv(dev);
43
44 return rn->clnt_priv;
45 }
46
47 static inline void *opa_vnic_dev_priv(const struct net_device *dev)
48 {
49 struct opa_vnic_rdma_netdev *oparn = netdev_priv(dev);
50
51 return oparn->dev_priv;
52 }
53
54 /* opa_vnic skb meta data structure */
55 struct opa_vnic_skb_mdata {
56 u8 vl;
57 u8 entropy;
58 u8 flags;
59 u8 rsvd;
60 } __packed;
61
62 /* OPA VNIC group statistics */
63 struct opa_vnic_grp_stats {
64 u64 unicast;
65 u64 mcastbcast;
66 u64 untagged;
67 u64 vlan;
68 u64 s_64;
69 u64 s_65_127;
70 u64 s_128_255;
71 u64 s_256_511;
72 u64 s_512_1023;
73 u64 s_1024_1518;
74 u64 s_1519_max;
75 };
76
77 struct opa_vnic_stats {
78 /* standard netdev statistics */
79 struct rtnl_link_stats64 netstats;
80
81 /* OPA VNIC statistics */
82 struct opa_vnic_grp_stats tx_grp;
83 struct opa_vnic_grp_stats rx_grp;
84 u64 tx_dlid_zero;
85 u64 tx_drop_state;
86 u64 rx_drop_state;
87 u64 rx_runt;
88 u64 rx_oversize;
89 };
90
91 static inline bool rdma_cap_opa_vnic(struct ib_device *device)
92 {
93 return !!(device->attrs.kernel_cap_flags & IBK_RDMA_NETDEV_OPA);
94 }
95
96 #endif /* _OPA_VNIC_H */
97
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