forked from luck/tmp_suning_uos_patched
7f90a5a069
Adds capability to create a qpn to be recognized as an accelerated UD QP for ipoib. This is accomplished by reserving 0x81 in byte[0] of the qpn as the prefix for these qp types and reserving qpns between 0x810000 and 0x81ffff. The hfi1 capability mask already contained a flag for the VNIC netdev. This has been renamed and extended to include both VNIC and ipoib. The rvt code to allocate qps now recognizes this flag and sets 0x81 into byte[0] of the qpn. The code to allocate qpns is modified to reset the qpn numbering when it is detected that a value is located in byte[0] for a UD QP and it is a qpn being requested for net dev use. If it is a regular UD QP then it is allowable to have bits set in byte[0] of the qpn and provide the previously normal behavior. The code to free the qpn now checks for the AIP prefix value of 0x81 and removes it from the qpn before being freed so that the lower 16 bit number can be reused. This patch requires minor changes in the IB core and ipoib to facilitate the creation of accelerated UP QPs. Link: https://lore.kernel.org/r/20200511160607.173205.11757.stgit@awfm-01.aw.intel.com Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Gary Leshner <Gary.S.Leshner@intel.com> Signed-off-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
139 lines
4.0 KiB
C
139 lines
4.0 KiB
C
#ifndef _OPA_VNIC_H
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#define _OPA_VNIC_H
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/*
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* Copyright(c) 2017 - 2020 Intel Corporation.
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* BSD LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* This file contains Intel Omni-Path (OPA) Virtual Network Interface
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* Controller (VNIC) specific declarations.
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*/
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#include <rdma/ib_verbs.h>
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/* 16 header bytes + 2 reserved bytes */
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#define OPA_VNIC_L2_HDR_LEN (16 + 2)
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#define OPA_VNIC_L4_HDR_LEN 2
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#define OPA_VNIC_HDR_LEN (OPA_VNIC_L2_HDR_LEN + \
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OPA_VNIC_L4_HDR_LEN)
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#define OPA_VNIC_L4_ETHR 0x78
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#define OPA_VNIC_ICRC_LEN 4
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#define OPA_VNIC_TAIL_LEN 1
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#define OPA_VNIC_ICRC_TAIL_LEN (OPA_VNIC_ICRC_LEN + OPA_VNIC_TAIL_LEN)
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#define OPA_VNIC_SKB_MDATA_LEN 4
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#define OPA_VNIC_SKB_MDATA_ENCAP_ERR 0x1
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/* opa vnic rdma netdev's private data structure */
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struct opa_vnic_rdma_netdev {
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struct rdma_netdev rn; /* keep this first */
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/* followed by device private data */
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char *dev_priv[];
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};
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static inline void *opa_vnic_priv(const struct net_device *dev)
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{
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struct rdma_netdev *rn = netdev_priv(dev);
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return rn->clnt_priv;
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}
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static inline void *opa_vnic_dev_priv(const struct net_device *dev)
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{
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struct opa_vnic_rdma_netdev *oparn = netdev_priv(dev);
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return oparn->dev_priv;
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}
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/* opa_vnic skb meta data structrue */
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struct opa_vnic_skb_mdata {
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u8 vl;
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u8 entropy;
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u8 flags;
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u8 rsvd;
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} __packed;
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/* OPA VNIC group statistics */
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struct opa_vnic_grp_stats {
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u64 unicast;
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u64 mcastbcast;
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u64 untagged;
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u64 vlan;
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u64 s_64;
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u64 s_65_127;
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u64 s_128_255;
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u64 s_256_511;
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u64 s_512_1023;
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u64 s_1024_1518;
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u64 s_1519_max;
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};
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struct opa_vnic_stats {
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/* standard netdev statistics */
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struct rtnl_link_stats64 netstats;
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/* OPA VNIC statistics */
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struct opa_vnic_grp_stats tx_grp;
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struct opa_vnic_grp_stats rx_grp;
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u64 tx_dlid_zero;
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u64 tx_drop_state;
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u64 rx_drop_state;
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u64 rx_runt;
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u64 rx_oversize;
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};
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static inline bool rdma_cap_opa_vnic(struct ib_device *device)
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{
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return !!(device->attrs.device_cap_flags &
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IB_DEVICE_RDMA_NETDEV_OPA);
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}
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#endif /* _OPA_VNIC_H */
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