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 */
34struct opa_vnic_rdma_netdev {
35	struct rdma_netdev rn;  /* keep this first */
36	/* followed by device private data */
37	char *dev_priv[];
38};
39
40static 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
47static 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 */
55struct opa_vnic_skb_mdata {
56	u8 vl;
57	u8 entropy;
58	u8 flags;
59	u8 rsvd;
60} __packed;
61
62/* OPA VNIC group statistics */
63struct 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
77struct 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
91static 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 */