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 | */ |
42 | struct 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 | */ |
61 | struct 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 | */ |
81 | struct 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 */ |
106 | void hfi1_vnic_setup(struct hfi1_devdata *dd); |
107 | int hfi1_vnic_txreq_init(struct hfi1_devdata *dd); |
108 | void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd); |
109 | |
110 | void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet); |
111 | void hfi1_vnic_sdma_init(struct hfi1_vnic_vport_info *vinfo); |
112 | bool hfi1_vnic_sdma_write_avail(struct hfi1_vnic_vport_info *vinfo, |
113 | u8 q_idx); |
114 | |
115 | /* vnic rdma netdev operations */ |
116 | struct 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 *)); |
122 | int 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 | |