mirror of
https://github.com/torvalds/linux.git
synced 2024-12-30 14:52:05 +00:00
72c07e2b67
We introduce a struct hfi1_16b_header to support 16B headers. 16B bypass packets are received by the driver and processed similar to 9B packets. Add basic support to handle 16B packets. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Don Hiatt <don.hiatt@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
170 lines
5.5 KiB
C
170 lines
5.5 KiB
C
#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
|
|
|
|
/* 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;
|
|
bool pkts_sent;
|
|
};
|
|
|
|
/**
|
|
* 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 */
|