include/rdma/opa_vnic.h

   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
  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
  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
  91 static 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 */