1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/ethtool.h>
#include <linux/netdevice.h>
#include <linux/delay.h>
#include <linux/mlx4/driver.h>
#include "mlx4_en.h"
static int mlx4_en_test_registers(struct mlx4_en_priv *priv)
{
return mlx4_cmd(priv->mdev->dev, 0, 0, 0, MLX4_CMD_HW_HEALTH_CHECK,
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
}
static int mlx4_en_test_loopback_xmit(struct mlx4_en_priv *priv)
{
struct sk_buff *skb;
struct ethhdr *ethh;
unsigned char *packet;
unsigned int packet_size = MLX4_LOOPBACK_TEST_PAYLOAD;
unsigned int i;
int err;
/* build the pkt before xmit */
skb = netdev_alloc_skb(priv->dev, MLX4_LOOPBACK_TEST_PAYLOAD + ETH_HLEN + NET_IP_ALIGN);
if (!skb)
return -ENOMEM;
skb_reserve(skb, NET_IP_ALIGN);
ethh = (struct ethhdr *)skb_put(skb, sizeof(struct ethhdr));
packet = (unsigned char *)skb_put(skb, packet_size);
memcpy(ethh->h_dest, priv->dev->dev_addr, ETH_ALEN);
memset(ethh->h_source, 0, ETH_ALEN);
ethh->h_proto = htons(ETH_P_ARP);
skb_set_mac_header(skb, 0);
for (i = 0; i < packet_size; ++i) /* fill our packet */
packet[i] = (unsigned char)(i & 0xff);
/* xmit the pkt */
err = mlx4_en_xmit(skb, priv->dev);
return err;
}
static int mlx4_en_test_loopback(struct mlx4_en_priv *priv)
{
u32 loopback_ok = 0;
int i;
bool gro_enabled;
priv->loopback_ok = 0;
priv->validate_loopback = 1;
gro_enabled = priv->dev->features & NETIF_F_GRO;
mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
priv->dev->features &= ~NETIF_F_GRO;
/* xmit */
if (mlx4_en_test_loopback_xmit(priv)) {
en_err(priv, "Transmitting loopback packet failed\n");
goto mlx4_en_test_loopback_exit;
}
/* polling for result */
for (i = 0; i < MLX4_EN_LOOPBACK_RETRIES; ++i) {
msleep(MLX4_EN_LOOPBACK_TIMEOUT);
if (priv->loopback_ok) {
loopback_ok = 1;
break;
}
}
if (!loopback_ok)
en_err(priv, "Loopback packet didn't arrive\n");
mlx4_en_test_loopback_exit:
priv->validate_loopback = 0;
if (gro_enabled)
priv->dev->features |= NETIF_F_GRO;
mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
return !loopback_ok;
}
static int mlx4_en_test_link(struct mlx4_en_priv *priv)
{
if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
return -ENOMEM;
if (priv->port_state.link_state == 1)
return 0;
else
return 1;
}
static int mlx4_en_test_speed(struct mlx4_en_priv *priv)
{
if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
return -ENOMEM;
/* The device supports 100M, 1G, 10G, 20G, 40G and 56G speed */
if (priv->port_state.link_speed != SPEED_100 &&
priv->port_state.link_speed != SPEED_1000 &&
priv->port_state.link_speed != SPEED_10000 &&
priv->port_state.link_speed != SPEED_20000 &&
priv->port_state.link_speed != SPEED_40000 &&
priv->port_state.link_speed != SPEED_56000)
return priv->port_state.link_speed;
return 0;
}
void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
int i, carrier_ok;
memset(buf, 0, sizeof(u64) * MLX4_EN_NUM_SELF_TEST);
if (*flags & ETH_TEST_FL_OFFLINE) {
/* disable the interface */
carrier_ok = netif_carrier_ok(dev);
netif_carrier_off(dev);
/* Wait until all tx queues are empty.
* there should not be any additional incoming traffic
* since we turned the carrier off */
msleep(200);
if (priv->mdev->dev->caps.flags &
MLX4_DEV_CAP_FLAG_UC_LOOPBACK) {
buf[3] = mlx4_en_test_registers(priv);
if (priv->port_up)
buf[4] = mlx4_en_test_loopback(priv);
}
if (carrier_ok)
netif_carrier_on(dev);
}
buf[0] = mlx4_test_interrupts(mdev->dev);
buf[1] = mlx4_en_test_link(priv);
buf[2] = mlx4_en_test_speed(priv);
for (i = 0; i < MLX4_EN_NUM_SELF_TEST; i++) {
if (buf[i])
*flags |= ETH_TEST_FL_FAILED;
}
}
|
