170 lines
5.5 KiB
C
170 lines
5.5 KiB
C
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#ifndef _HFI1_VNIC_H
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#define _HFI1_VNIC_H
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/*
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* Copyright(c) 2017 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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#include <rdma/opa_vnic.h>
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#include "hfi.h"
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#include "sdma.h"
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#define HFI1_VNIC_MAX_TXQ 16
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#define HFI1_VNIC_MAX_PAD 12
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/* L4 header definitions */
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#define HFI1_VNIC_L4_HDR_OFFSET OPA_VNIC_L2_HDR_LEN
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#define HFI1_VNIC_GET_L4_HDR(data) \
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(*((u16 *)((u8 *)(data) + HFI1_VNIC_L4_HDR_OFFSET)))
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#define HFI1_VNIC_GET_VESWID(data) \
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(HFI1_VNIC_GET_L4_HDR(data) & 0xFFF)
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/* Service class */
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#define HFI1_VNIC_SC_OFFSET_LOW 6
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#define HFI1_VNIC_SC_OFFSET_HI 7
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#define HFI1_VNIC_SC_SHIFT 4
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#define HFI1_VNIC_MAX_QUEUE 16
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/**
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* struct hfi1_vnic_sdma - VNIC per Tx ring SDMA information
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* @dd - device data pointer
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* @sde - sdma engine
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* @vinfo - vnic info pointer
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* @wait - iowait structure
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* @stx - sdma tx request
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* @state - vnic Tx ring SDMA state
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* @q_idx - vnic Tx queue index
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*/
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struct hfi1_vnic_sdma {
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struct hfi1_devdata *dd;
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struct sdma_engine *sde;
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struct hfi1_vnic_vport_info *vinfo;
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struct iowait wait;
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struct sdma_txreq stx;
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unsigned int state;
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u8 q_idx;
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bool pkts_sent;
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};
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/**
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* struct hfi1_vnic_rx_queue - HFI1 VNIC receive queue
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* @idx: queue index
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* @vinfo: pointer to vport information
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* @netdev: network device
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* @napi: netdev napi structure
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* @skbq: queue of received socket buffers
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*/
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struct hfi1_vnic_rx_queue {
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u8 idx;
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struct hfi1_vnic_vport_info *vinfo;
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struct net_device *netdev;
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struct napi_struct napi;
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struct sk_buff_head skbq;
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};
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/**
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* struct hfi1_vnic_vport_info - HFI1 VNIC virtual port information
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* @dd: device data pointer
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* @netdev: net device pointer
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* @flags: state flags
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* @lock: vport lock
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* @num_tx_q: number of transmit queues
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* @num_rx_q: number of receive queues
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* @vesw_id: virtual switch id
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* @rxq: Array of receive queues
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* @stats: per queue stats
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* @sdma: VNIC SDMA structure per TXQ
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*/
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struct hfi1_vnic_vport_info {
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struct hfi1_devdata *dd;
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struct net_device *netdev;
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unsigned long flags;
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/* Lock used around state updates */
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struct mutex lock;
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u8 num_tx_q;
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u8 num_rx_q;
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u16 vesw_id;
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struct hfi1_vnic_rx_queue rxq[HFI1_NUM_VNIC_CTXT];
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struct opa_vnic_stats stats[HFI1_VNIC_MAX_QUEUE];
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struct hfi1_vnic_sdma sdma[HFI1_VNIC_MAX_TXQ];
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};
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#define v_dbg(format, arg...) \
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netdev_dbg(vinfo->netdev, format, ## arg)
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#define v_err(format, arg...) \
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netdev_err(vinfo->netdev, format, ## arg)
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#define v_info(format, arg...) \
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netdev_info(vinfo->netdev, format, ## arg)
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/* vnic hfi1 internal functions */
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void hfi1_vnic_setup(struct hfi1_devdata *dd);
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void hfi1_vnic_cleanup(struct hfi1_devdata *dd);
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int hfi1_vnic_txreq_init(struct hfi1_devdata *dd);
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void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd);
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void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet);
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void hfi1_vnic_sdma_init(struct hfi1_vnic_vport_info *vinfo);
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bool hfi1_vnic_sdma_write_avail(struct hfi1_vnic_vport_info *vinfo,
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u8 q_idx);
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/* vnic rdma netdev operations */
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struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device,
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u8 port_num,
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enum rdma_netdev_t type,
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const char *name,
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unsigned char name_assign_type,
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void (*setup)(struct net_device *));
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int hfi1_vnic_send_dma(struct hfi1_devdata *dd, u8 q_idx,
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struct hfi1_vnic_vport_info *vinfo,
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struct sk_buff *skb, u64 pbc, u8 plen);
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#endif /* _HFI1_VNIC_H */
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