| #ifndef _HFI1_VNIC_H |
| #define _HFI1_VNIC_H |
| /* |
| * Copyright(c) 2017 Intel Corporation. |
| * |
| * This file is provided under a dual BSD/GPLv2 license. When using or |
| * redistributing this file, you may do so under either license. |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * BSD LICENSE |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * - Neither the name of Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <rdma/opa_vnic.h> |
| #include "hfi.h" |
| #include "sdma.h" |
| |
| #define HFI1_VNIC_MAX_TXQ 16 |
| #define HFI1_VNIC_MAX_PAD 12 |
| |
| /* L2 header definitions */ |
| #define HFI1_L2_TYPE_OFFSET 0x7 |
| #define HFI1_L2_TYPE_SHFT 0x5 |
| #define HFI1_L2_TYPE_MASK 0x3 |
| |
| #define HFI1_GET_L2_TYPE(hdr) \ |
| ((*((u8 *)(hdr) + HFI1_L2_TYPE_OFFSET) >> HFI1_L2_TYPE_SHFT) & \ |
| HFI1_L2_TYPE_MASK) |
| |
| /* L4 type definitions */ |
| #define HFI1_L4_TYPE_OFFSET 8 |
| |
| #define HFI1_GET_L4_TYPE(data) \ |
| (*((u8 *)(data) + HFI1_L4_TYPE_OFFSET)) |
| |
| /* L4 header definitions */ |
| #define HFI1_VNIC_L4_HDR_OFFSET OPA_VNIC_L2_HDR_LEN |
| |
| #define HFI1_VNIC_GET_L4_HDR(data) \ |
| (*((u16 *)((u8 *)(data) + HFI1_VNIC_L4_HDR_OFFSET))) |
| |
| #define HFI1_VNIC_GET_VESWID(data) \ |
| (HFI1_VNIC_GET_L4_HDR(data) & 0xFFF) |
| |
| /* Service class */ |
| #define HFI1_VNIC_SC_OFFSET_LOW 6 |
| #define HFI1_VNIC_SC_OFFSET_HI 7 |
| #define HFI1_VNIC_SC_SHIFT 4 |
| |
| #define HFI1_VNIC_MAX_QUEUE 16 |
| |
| /** |
| * struct hfi1_vnic_sdma - VNIC per Tx ring SDMA information |
| * @dd - device data pointer |
| * @sde - sdma engine |
| * @vinfo - vnic info pointer |
| * @wait - iowait structure |
| * @stx - sdma tx request |
| * @state - vnic Tx ring SDMA state |
| * @q_idx - vnic Tx queue index |
| */ |
| struct hfi1_vnic_sdma { |
| struct hfi1_devdata *dd; |
| struct sdma_engine *sde; |
| struct hfi1_vnic_vport_info *vinfo; |
| struct iowait wait; |
| struct sdma_txreq stx; |
| unsigned int state; |
| u8 q_idx; |
| }; |
| |
| /** |
| * struct hfi1_vnic_rx_queue - HFI1 VNIC receive queue |
| * @idx: queue index |
| * @vinfo: pointer to vport information |
| * @netdev: network device |
| * @napi: netdev napi structure |
| * @skbq: queue of received socket buffers |
| */ |
| struct hfi1_vnic_rx_queue { |
| u8 idx; |
| struct hfi1_vnic_vport_info *vinfo; |
| struct net_device *netdev; |
| struct napi_struct napi; |
| struct sk_buff_head skbq; |
| }; |
| |
| /** |
| * struct hfi1_vnic_vport_info - HFI1 VNIC virtual port information |
| * @dd: device data pointer |
| * @netdev: net device pointer |
| * @flags: state flags |
| * @lock: vport lock |
| * @num_tx_q: number of transmit queues |
| * @num_rx_q: number of receive queues |
| * @vesw_id: virtual switch id |
| * @rxq: Array of receive queues |
| * @stats: per queue stats |
| * @sdma: VNIC SDMA structure per TXQ |
| */ |
| struct hfi1_vnic_vport_info { |
| struct hfi1_devdata *dd; |
| struct net_device *netdev; |
| unsigned long flags; |
| |
| /* Lock used around state updates */ |
| struct mutex lock; |
| |
| u8 num_tx_q; |
| u8 num_rx_q; |
| u16 vesw_id; |
| struct hfi1_vnic_rx_queue rxq[HFI1_NUM_VNIC_CTXT]; |
| |
| struct opa_vnic_stats stats[HFI1_VNIC_MAX_QUEUE]; |
| struct hfi1_vnic_sdma sdma[HFI1_VNIC_MAX_TXQ]; |
| }; |
| |
| #define v_dbg(format, arg...) \ |
| netdev_dbg(vinfo->netdev, format, ## arg) |
| #define v_err(format, arg...) \ |
| netdev_err(vinfo->netdev, format, ## arg) |
| #define v_info(format, arg...) \ |
| netdev_info(vinfo->netdev, format, ## arg) |
| |
| /* vnic hfi1 internal functions */ |
| void hfi1_vnic_setup(struct hfi1_devdata *dd); |
| void hfi1_vnic_cleanup(struct hfi1_devdata *dd); |
| int hfi1_vnic_txreq_init(struct hfi1_devdata *dd); |
| void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd); |
| |
| void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet); |
| void hfi1_vnic_sdma_init(struct hfi1_vnic_vport_info *vinfo); |
| bool hfi1_vnic_sdma_write_avail(struct hfi1_vnic_vport_info *vinfo, |
| u8 q_idx); |
| |
| /* vnic rdma netdev operations */ |
| struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device, |
| u8 port_num, |
| enum rdma_netdev_t type, |
| const char *name, |
| unsigned char name_assign_type, |
| void (*setup)(struct net_device *)); |
| int hfi1_vnic_send_dma(struct hfi1_devdata *dd, u8 q_idx, |
| struct hfi1_vnic_vport_info *vinfo, |
| struct sk_buff *skb, u64 pbc, u8 plen); |
| |
| #endif /* _HFI1_VNIC_H */ |