| 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 | /* VNIC uses 16B header format */ |
| 58 | #define OPA_VNIC_L2_TYPE 0x2 |
| 59 | |
| 60 | /* 16 header bytes + 2 reserved bytes */ |
| 61 | #define OPA_VNIC_L2_HDR_LEN (16 + 2) |
| 62 | |
| 63 | #define OPA_VNIC_L4_HDR_LEN 2 |
| 64 | |
| 65 | #define OPA_VNIC_HDR_LEN (OPA_VNIC_L2_HDR_LEN + \ |
| 66 | OPA_VNIC_L4_HDR_LEN) |
| 67 | |
| 68 | #define OPA_VNIC_L4_ETHR 0x78 |
| 69 | |
| 70 | #define OPA_VNIC_ICRC_LEN 4 |
| 71 | #define OPA_VNIC_TAIL_LEN 1 |
| 72 | #define OPA_VNIC_ICRC_TAIL_LEN (OPA_VNIC_ICRC_LEN + OPA_VNIC_TAIL_LEN) |
| 73 | |
| 74 | #define OPA_VNIC_SKB_MDATA_LEN 4 |
| 75 | #define OPA_VNIC_SKB_MDATA_ENCAP_ERR 0x1 |
| 76 | |
| 77 | /* opa vnic rdma netdev's private data structure */ |
| 78 | struct opa_vnic_rdma_netdev { |
| 79 | struct rdma_netdev rn; /* keep this first */ |
| 80 | /* followed by device private data */ |
| 81 | char *dev_priv[0]; |
| 82 | }; |
| 83 | |
| 84 | static inline void *opa_vnic_priv(const struct net_device *dev) |
| 85 | { |
| 86 | struct rdma_netdev *rn = netdev_priv(dev); |
| 87 | |
| 88 | return rn->clnt_priv; |
| 89 | } |
| 90 | |
| 91 | static inline void *opa_vnic_dev_priv(const struct net_device *dev) |
| 92 | { |
| 93 | struct opa_vnic_rdma_netdev *oparn = netdev_priv(dev); |
| 94 | |
| 95 | return oparn->dev_priv; |
| 96 | } |
| 97 | |
| 98 | /* opa_vnic skb meta data structrue */ |
| 99 | struct opa_vnic_skb_mdata { |
| 100 | u8 vl; |
| 101 | u8 entropy; |
| 102 | u8 flags; |
| 103 | u8 rsvd; |
| 104 | } __packed; |
| 105 | |
| 106 | /* OPA VNIC group statistics */ |
| 107 | struct opa_vnic_grp_stats { |
| 108 | u64 unicast; |
| 109 | u64 mcastbcast; |
| 110 | u64 untagged; |
| 111 | u64 vlan; |
| 112 | u64 s_64; |
| 113 | u64 s_65_127; |
| 114 | u64 s_128_255; |
| 115 | u64 s_256_511; |
| 116 | u64 s_512_1023; |
| 117 | u64 s_1024_1518; |
| 118 | u64 s_1519_max; |
| 119 | }; |
| 120 | |
| 121 | struct opa_vnic_stats { |
| 122 | /* standard netdev statistics */ |
| 123 | struct rtnl_link_stats64 netstats; |
| 124 | |
| 125 | /* OPA VNIC statistics */ |
| 126 | struct opa_vnic_grp_stats tx_grp; |
| 127 | struct opa_vnic_grp_stats rx_grp; |
| 128 | u64 tx_dlid_zero; |
| 129 | u64 tx_drop_state; |
| 130 | u64 rx_drop_state; |
| 131 | u64 rx_runt; |
| 132 | u64 rx_oversize; |
| 133 | }; |
| 134 | |
| 135 | static inline bool rdma_cap_opa_vnic(struct ib_device *device) |
| 136 | { |
| 137 | return !!(device->attrs.device_cap_flags & |
| 138 | IB_DEVICE_RDMA_NETDEV_OPA_VNIC); |
| 139 | } |
| 140 | |
| 141 | #endif /* _OPA_VNIC_H */ |