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168 lines
5.4 KiB
168 lines
5.4 KiB
#ifndef _HFI1_VNIC_H |
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#define _HFI1_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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#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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#define HFI1_NUM_VNIC_CTXT 8 |
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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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}; |
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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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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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