1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2/*
3 * Copyright(c) 2017 - 2020 Intel Corporation.
4 */
5
6#ifndef _HFI1_VNIC_H
7#define _HFI1_VNIC_H
8#include <rdma/opa_vnic.h>
9#include "hfi.h"
10#include "sdma.h"
11
12#define HFI1_VNIC_MAX_TXQ 16
13#define HFI1_VNIC_MAX_PAD 12
14
15/* L4 header definitions */
16#define HFI1_VNIC_L4_HDR_OFFSET OPA_VNIC_L2_HDR_LEN
17
18#define HFI1_VNIC_GET_L4_HDR(data) \
19 (*((u16 *)((u8 *)(data) + HFI1_VNIC_L4_HDR_OFFSET)))
20
21#define HFI1_VNIC_GET_VESWID(data) \
22 (HFI1_VNIC_GET_L4_HDR(data) & 0xFFF)
23
24/* Service class */
25#define HFI1_VNIC_SC_OFFSET_LOW 6
26#define HFI1_VNIC_SC_OFFSET_HI 7
27#define HFI1_VNIC_SC_SHIFT 4
28
29#define HFI1_VNIC_MAX_QUEUE 16
30#define HFI1_NUM_VNIC_CTXT 8
31
32/**
33 * struct hfi1_vnic_sdma - VNIC per Tx ring SDMA information
34 * @dd - device data pointer
35 * @sde - sdma engine
36 * @vinfo - vnic info pointer
37 * @wait - iowait structure
38 * @stx - sdma tx request
39 * @state - vnic Tx ring SDMA state
40 * @q_idx - vnic Tx queue index
41 */
42struct hfi1_vnic_sdma {
43 struct hfi1_devdata *dd;
44 struct sdma_engine *sde;
45 struct hfi1_vnic_vport_info *vinfo;
46 struct iowait wait;
47 struct sdma_txreq stx;
48 unsigned int state;
49 u8 q_idx;
50 bool pkts_sent;
51};
52
53/**
54 * struct hfi1_vnic_rx_queue - HFI1 VNIC receive queue
55 * @idx: queue index
56 * @vinfo: pointer to vport information
57 * @netdev: network device
58 * @napi: netdev napi structure
59 * @skbq: queue of received socket buffers
60 */
61struct hfi1_vnic_rx_queue {
62 u8 idx;
63 struct hfi1_vnic_vport_info *vinfo;
64 struct net_device *netdev;
65 struct napi_struct napi;
66};
67
68/**
69 * struct hfi1_vnic_vport_info - HFI1 VNIC virtual port information
70 * @dd: device data pointer
71 * @netdev: net device pointer
72 * @flags: state flags
73 * @lock: vport lock
74 * @num_tx_q: number of transmit queues
75 * @num_rx_q: number of receive queues
76 * @vesw_id: virtual switch id
77 * @rxq: Array of receive queues
78 * @stats: per queue stats
79 * @sdma: VNIC SDMA structure per TXQ
80 */
81struct hfi1_vnic_vport_info {
82 struct hfi1_devdata *dd;
83 struct net_device *netdev;
84 unsigned long flags;
85
86 /* Lock used around state updates */
87 struct mutex lock;
88
89 u8 num_tx_q;
90 u8 num_rx_q;
91 u16 vesw_id;
92 struct hfi1_vnic_rx_queue rxq[HFI1_NUM_VNIC_CTXT];
93
94 struct opa_vnic_stats stats[HFI1_VNIC_MAX_QUEUE];
95 struct hfi1_vnic_sdma sdma[HFI1_VNIC_MAX_TXQ];
96};
97
98#define v_dbg(format, arg...) \
99 netdev_dbg(vinfo->netdev, format, ## arg)
100#define v_err(format, arg...) \
101 netdev_err(vinfo->netdev, format, ## arg)
102#define v_info(format, arg...) \
103 netdev_info(vinfo->netdev, format, ## arg)
104
105/* vnic hfi1 internal functions */
106void hfi1_vnic_setup(struct hfi1_devdata *dd);
107int hfi1_vnic_txreq_init(struct hfi1_devdata *dd);
108void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd);
109
110void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet);
111void hfi1_vnic_sdma_init(struct hfi1_vnic_vport_info *vinfo);
112bool hfi1_vnic_sdma_write_avail(struct hfi1_vnic_vport_info *vinfo,
113 u8 q_idx);
114
115/* vnic rdma netdev operations */
116struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device,
117 u32 port_num,
118 enum rdma_netdev_t type,
119 const char *name,
120 unsigned char name_assign_type,
121 void (*setup)(struct net_device *));
122int hfi1_vnic_send_dma(struct hfi1_devdata *dd, u8 q_idx,
123 struct hfi1_vnic_vport_info *vinfo,
124 struct sk_buff *skb, u64 pbc, u8 plen);
125
126#endif /* _HFI1_VNIC_H */
127

source code of linux/drivers/infiniband/hw/hfi1/vnic.h