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TOMOYO Linux Cross Reference
Linux/include/rdma/opa_vnic.h

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  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[0];
 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 

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