include/rdma/opa_vnic.h

0001 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
0002 /*
0003  * Copyright(c) 2017 - 2020 Intel Corporation.
0004  */
0005
0006 #ifndef _OPA_VNIC_H
0007 #define _OPA_VNIC_H
0008
0009 /*
0010  * This file contains Intel Omni-Path (OPA) Virtual Network Interface
0011  * Controller (VNIC) specific declarations.
0012  */
0013
0014 #include <rdma/ib_verbs.h>
0015
0016 /* 16 header bytes + 2 reserved bytes */
0017 #define OPA_VNIC_L2_HDR_LEN   (16 + 2)
0018
0019 #define OPA_VNIC_L4_HDR_LEN   2
0020
0021 #define OPA_VNIC_HDR_LEN      (OPA_VNIC_L2_HDR_LEN + \
0022                    OPA_VNIC_L4_HDR_LEN)
0023
0024 #define OPA_VNIC_L4_ETHR  0x78
0025
0026 #define OPA_VNIC_ICRC_LEN   4
0027 #define OPA_VNIC_TAIL_LEN   1
0028 #define OPA_VNIC_ICRC_TAIL_LEN  (OPA_VNIC_ICRC_LEN + OPA_VNIC_TAIL_LEN)
0029
0030 #define OPA_VNIC_SKB_MDATA_LEN         4
0031 #define OPA_VNIC_SKB_MDATA_ENCAP_ERR   0x1
0032
0033 /* opa vnic rdma netdev's private data structure */
0034 struct opa_vnic_rdma_netdev {
0035     struct rdma_netdev rn;  /* keep this first */
0036     /* followed by device private data */
0037     char *dev_priv[];
0038 };
0039
0040 static inline void *opa_vnic_priv(const struct net_device *dev)
0041 {
0042     struct rdma_netdev *rn = netdev_priv(dev);
0043
0044     return rn->clnt_priv;
0045 }
0046
0047 static inline void *opa_vnic_dev_priv(const struct net_device *dev)
0048 {
0049     struct opa_vnic_rdma_netdev *oparn = netdev_priv(dev);
0050
0051     return oparn->dev_priv;
0052 }
0053
0054 /* opa_vnic skb meta data structrue */
0055 struct opa_vnic_skb_mdata {
0056     u8 vl;
0057     u8 entropy;
0058     u8 flags;
0059     u8 rsvd;
0060 } __packed;
0061
0062 /* OPA VNIC group statistics */
0063 struct opa_vnic_grp_stats {
0064     u64 unicast;
0065     u64 mcastbcast;
0066     u64 untagged;
0067     u64 vlan;
0068     u64 s_64;
0069     u64 s_65_127;
0070     u64 s_128_255;
0071     u64 s_256_511;
0072     u64 s_512_1023;
0073     u64 s_1024_1518;
0074     u64 s_1519_max;
0075 };
0076
0077 struct opa_vnic_stats {
0078     /* standard netdev statistics */
0079     struct rtnl_link_stats64 netstats;
0080
0081     /* OPA VNIC statistics */
0082     struct opa_vnic_grp_stats tx_grp;
0083     struct opa_vnic_grp_stats rx_grp;
0084     u64 tx_dlid_zero;
0085     u64 tx_drop_state;
0086     u64 rx_drop_state;
0087     u64 rx_runt;
0088     u64 rx_oversize;
0089 };
0090
0091 static inline bool rdma_cap_opa_vnic(struct ib_device *device)
0092 {
0093     return !!(device->attrs.kernel_cap_flags & IBK_RDMA_NETDEV_OPA);
0094 }
0095
0096 #endif /* _OPA_VNIC_H */