1 #ifndef _OPA_VNIC_H
2 #define _OPA_VNIC_H
3 /*
4 * Copyright(c) 2017 Intel Corporation.
5 *
6 * This file is provided under a dual BSD/GPLv2 license. When using or
7 * redistributing this file, you may do so under either license.
8 *
9 * GPL LICENSE SUMMARY
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * BSD LICENSE
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 *
26 * - Redistributions of source code must retain the above copyright
27 * notice, this list of conditions and the following disclaimer.
28 * - Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in
30 * the documentation and/or other materials provided with the
31 * distribution.
32 * - Neither the name of Intel Corporation nor the names of its
33 * contributors may be used to endorse or promote products derived
34 * from this software without specific prior written permission.
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
37 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
38 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
39 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
40 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
43 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
44 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
45 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
46 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
47 *
48 */
49
50 /*
51 * This file contains Intel Omni-Path (OPA) Virtual Network Interface
52 * Controller (VNIC) specific declarations.
53 */
54
55 #include <rdma/ib_verbs.h>
56
57 /* 16 header bytes + 2 reserved bytes */
58 #define OPA_VNIC_L2_HDR_LEN (16 + 2)
59
60 #define OPA_VNIC_L4_HDR_LEN 2
61
62 #define OPA_VNIC_HDR_LEN (OPA_VNIC_L2_HDR_LEN + \
63 OPA_VNIC_L4_HDR_LEN)
64
65 #define OPA_VNIC_L4_ETHR 0x78
66
67 #define OPA_VNIC_ICRC_LEN 4
68 #define OPA_VNIC_TAIL_LEN 1
69 #define OPA_VNIC_ICRC_TAIL_LEN (OPA_VNIC_ICRC_LEN + OPA_VNIC_TAIL_LEN)
70
71 #define OPA_VNIC_SKB_MDATA_LEN 4
72 #define OPA_VNIC_SKB_MDATA_ENCAP_ERR 0x1
73
74 /* opa vnic rdma netdev's private data structure */
75 struct opa_vnic_rdma_netdev {
76 struct rdma_netdev rn; /* keep this first */
77 /* followed by device private data */
78 char *dev_priv[0];
79 };
80
81 static inline void *opa_vnic_priv(const struct net_device *dev)
82 {
83 struct rdma_netdev *rn = netdev_priv(dev);
84
85 return rn->clnt_priv;
86 }
87
88 static inline void *opa_vnic_dev_priv(const struct net_device *dev)
89 {
90 struct opa_vnic_rdma_netdev *oparn = netdev_priv(dev);
91
92 return oparn->dev_priv;
93 }
94
95 /* opa_vnic skb meta data structrue */
96 struct opa_vnic_skb_mdata {
97 u8 vl;
98 u8 entropy;
99 u8 flags;
100 u8 rsvd;
101 } __packed;
102
103 /* OPA VNIC group statistics */
104 struct opa_vnic_grp_stats {
105 u64 unicast;
106 u64 mcastbcast;
107 u64 untagged;
108 u64 vlan;
109 u64 s_64;
110 u64 s_65_127;
111 u64 s_128_255;
112 u64 s_256_511;
113 u64 s_512_1023;
114 u64 s_1024_1518;
115 u64 s_1519_max;
116 };
117
118 struct opa_vnic_stats {
119 /* standard netdev statistics */
120 struct rtnl_link_stats64 netstats;
121
122 /* OPA VNIC statistics */
123 struct opa_vnic_grp_stats tx_grp;
124 struct opa_vnic_grp_stats rx_grp;
125 u64 tx_dlid_zero;
126 u64 tx_drop_state;
127 u64 rx_drop_state;
128 u64 rx_runt;
129 u64 rx_oversize;
130 };
131
132 static inline bool rdma_cap_opa_vnic(struct ib_device *device)
133 {
134 return !!(device->attrs.device_cap_flags &
135 IB_DEVICE_RDMA_NETDEV_OPA_VNIC);
136 }
137
138 #endif /* _OPA_VNIC_H */