1// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2/*
3 * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
4 */
5
6#include <linux/mlx5/vport.h>
7#include "ib_rep.h"
8#include "srq.h"
9
10static int
11mlx5_ib_set_vport_rep(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
12{
13	struct mlx5_ib_dev *ibdev;
14	int vport_index;
15
16	ibdev = mlx5_ib_get_uplink_ibdev(dev->priv.eswitch);
17	vport_index = rep->vport_index;
18
19	ibdev->port[vport_index].rep = rep;
20	rep->rep_data[REP_IB].priv = ibdev;
21	write_lock(&ibdev->port[vport_index].roce.netdev_lock);
22	ibdev->port[vport_index].roce.netdev =
23		mlx5_ib_get_rep_netdev(dev->priv.eswitch, rep->vport);
24	write_unlock(&ibdev->port[vport_index].roce.netdev_lock);
25
26	return 0;
27}
28
29static int
30mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
31{
32	int num_ports = mlx5_eswitch_get_total_vports(dev);
33	const struct mlx5_ib_profile *profile;
34	struct mlx5_ib_dev *ibdev;
35	int vport_index;
36
37	if (rep->vport == MLX5_VPORT_UPLINK)
38		profile = &raw_eth_profile;
39	else
40		return mlx5_ib_set_vport_rep(dev, rep);
41
42	ibdev = ib_alloc_device(mlx5_ib_dev, ib_dev);
43	if (!ibdev)
44		return -ENOMEM;
45
46	ibdev->port = kcalloc(num_ports, sizeof(*ibdev->port),
47			      GFP_KERNEL);
48	if (!ibdev->port) {
49		ib_dealloc_device(&ibdev->ib_dev);
50		return -ENOMEM;
51	}
52
53	ibdev->is_rep = true;
54	vport_index = rep->vport_index;
55	ibdev->port[vport_index].rep = rep;
56	ibdev->port[vport_index].roce.netdev =
57		mlx5_ib_get_rep_netdev(dev->priv.eswitch, rep->vport);
58	ibdev->mdev = dev;
59	ibdev->num_ports = num_ports;
60
61	if (!__mlx5_ib_add(ibdev, profile))
62		return -EINVAL;
63
64	rep->rep_data[REP_IB].priv = ibdev;
65
66	return 0;
67}
68
69static void
70mlx5_ib_vport_rep_unload(struct mlx5_eswitch_rep *rep)
71{
72	struct mlx5_ib_dev *dev = mlx5_ib_rep_to_dev(rep);
73	struct mlx5_ib_port *port;
74
75	port = &dev->port[rep->vport_index];
76	write_lock(&port->roce.netdev_lock);
77	port->roce.netdev = NULL;
78	write_unlock(&port->roce.netdev_lock);
79	rep->rep_data[REP_IB].priv = NULL;
80	port->rep = NULL;
81
82	if (rep->vport == MLX5_VPORT_UPLINK)
83		__mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX);
84}
85
86static void *mlx5_ib_vport_get_proto_dev(struct mlx5_eswitch_rep *rep)
87{
88	return mlx5_ib_rep_to_dev(rep);
89}
90
91static const struct mlx5_eswitch_rep_ops rep_ops = {
92	.load = mlx5_ib_vport_rep_load,
93	.unload = mlx5_ib_vport_rep_unload,
94	.get_proto_dev = mlx5_ib_vport_get_proto_dev,
95};
96
97void mlx5_ib_register_vport_reps(struct mlx5_core_dev *mdev)
98{
99	struct mlx5_eswitch *esw = mdev->priv.eswitch;
100
101	mlx5_eswitch_register_vport_reps(esw, &rep_ops, REP_IB);
102}
103
104void mlx5_ib_unregister_vport_reps(struct mlx5_core_dev *mdev)
105{
106	struct mlx5_eswitch *esw = mdev->priv.eswitch;
107
108	mlx5_eswitch_unregister_vport_reps(esw, REP_IB);
109}
110
111u8 mlx5_ib_eswitch_mode(struct mlx5_eswitch *esw)
112{
113	return mlx5_eswitch_mode(esw);
114}
115
116struct mlx5_ib_dev *mlx5_ib_get_rep_ibdev(struct mlx5_eswitch *esw,
117					  u16 vport_num)
118{
119	return mlx5_eswitch_get_proto_dev(esw, vport_num, REP_IB);
120}
121
122struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw,
123					  u16 vport_num)
124{
125	return mlx5_eswitch_get_proto_dev(esw, vport_num, REP_ETH);
126}
127
128struct mlx5_ib_dev *mlx5_ib_get_uplink_ibdev(struct mlx5_eswitch *esw)
129{
130	return mlx5_eswitch_uplink_get_proto_dev(esw, REP_IB);
131}
132
133struct mlx5_eswitch_rep *mlx5_ib_vport_rep(struct mlx5_eswitch *esw,
134					   u16 vport_num)
135{
136	return mlx5_eswitch_vport_rep(esw, vport_num);
137}
138
139struct mlx5_flow_handle *create_flow_rule_vport_sq(struct mlx5_ib_dev *dev,
140						   struct mlx5_ib_sq *sq,
141						   u16 port)
142{
143	struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
144	struct mlx5_eswitch_rep *rep;
145
146	if (!dev->is_rep || !port)
147		return NULL;
148
149	if (!dev->port[port - 1].rep)
150		return ERR_PTR(-EINVAL);
151
152	rep = dev->port[port - 1].rep;
153
154	return mlx5_eswitch_add_send_to_vport_rule(esw, rep->vport,
155						   sq->base.mqp.qpn);
156}
157