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 */
 75struct 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
 81static 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
 88static 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 */
 96struct opa_vnic_skb_mdata {
 97	u8 vl;
 98	u8 entropy;
 99	u8 flags;
100	u8 rsvd;
101} __packed;
102
103/* OPA VNIC group statistics */
104struct 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
118struct 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
132static 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 */