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 
opa_vnic_priv(const struct net_device * dev)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 
opa_vnic_dev_priv(const struct net_device * dev)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 structrue */
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 
rdma_cap_opa_vnic(struct ib_device * device)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