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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright(c) 2017 - 2020 Intel Corporation.
*/
#ifndef _HFI1_VNIC_H
#define _HFI1_VNIC_H
#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
#define HFI1_NUM_VNIC_CTXT 8
/**
* 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 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);
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,
u32 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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