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