LXR linux/include/rdma/opa

   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 structrue */
  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.device_cap_flags &
  94                  IB_DEVICE_RDMA_NETDEV_OPA);
  95}
  96
  97#endif /* _OPA_VNIC_H */
  98