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 */ 142