LXR linux/include/rdma/opa

   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[];
  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 */
 139