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#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 */
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