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34#include <linux/kernel.h>
35#include <linux/ethtool.h>
36#include <linux/netdevice.h>
37#include <linux/delay.h>
38#include <linux/mlx4/driver.h>
39
40#include "mlx4_en.h"
41
42
43static int mlx4_en_test_registers(struct mlx4_en_priv *priv)
44{
45 return mlx4_cmd(priv->mdev->dev, 0, 0, 0, MLX4_CMD_HW_HEALTH_CHECK,
46 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
47}
48
49static int mlx4_en_test_loopback_xmit(struct mlx4_en_priv *priv)
50{
51 struct sk_buff *skb;
52 struct ethhdr *ethh;
53 unsigned char *packet;
54 unsigned int packet_size = MLX4_LOOPBACK_TEST_PAYLOAD;
55 unsigned int i;
56 int err;
57
58
59
60 skb = netdev_alloc_skb(priv->dev, MLX4_LOOPBACK_TEST_PAYLOAD + ETH_HLEN + NET_IP_ALIGN);
61 if (!skb)
62 return -ENOMEM;
63
64 skb_reserve(skb, NET_IP_ALIGN);
65
66 ethh = (struct ethhdr *)skb_put(skb, sizeof(struct ethhdr));
67 packet = (unsigned char *)skb_put(skb, packet_size);
68 memcpy(ethh->h_dest, priv->dev->dev_addr, ETH_ALEN);
69 eth_zero_addr(ethh->h_source);
70 ethh->h_proto = htons(ETH_P_ARP);
71 skb_set_mac_header(skb, 0);
72 for (i = 0; i < packet_size; ++i)
73 packet[i] = (unsigned char)(i & 0xff);
74
75
76 err = mlx4_en_xmit(skb, priv->dev);
77 return err;
78}
79
80static int mlx4_en_test_loopback(struct mlx4_en_priv *priv)
81{
82 u32 loopback_ok = 0;
83 int i;
84 bool gro_enabled;
85
86 priv->loopback_ok = 0;
87 priv->validate_loopback = 1;
88 gro_enabled = priv->dev->features & NETIF_F_GRO;
89
90 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
91 priv->dev->features &= ~NETIF_F_GRO;
92
93
94 if (mlx4_en_test_loopback_xmit(priv)) {
95 en_err(priv, "Transmitting loopback packet failed\n");
96 goto mlx4_en_test_loopback_exit;
97 }
98
99
100 for (i = 0; i < MLX4_EN_LOOPBACK_RETRIES; ++i) {
101 msleep(MLX4_EN_LOOPBACK_TIMEOUT);
102 if (priv->loopback_ok) {
103 loopback_ok = 1;
104 break;
105 }
106 }
107 if (!loopback_ok)
108 en_err(priv, "Loopback packet didn't arrive\n");
109
110mlx4_en_test_loopback_exit:
111
112 priv->validate_loopback = 0;
113
114 if (gro_enabled)
115 priv->dev->features |= NETIF_F_GRO;
116
117 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
118 return !loopback_ok;
119}
120
121
122static int mlx4_en_test_link(struct mlx4_en_priv *priv)
123{
124 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
125 return -ENOMEM;
126 if (priv->port_state.link_state == 1)
127 return 0;
128 else
129 return 1;
130}
131
132static int mlx4_en_test_speed(struct mlx4_en_priv *priv)
133{
134
135 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
136 return -ENOMEM;
137
138
139 if (priv->port_state.link_speed != SPEED_100 &&
140 priv->port_state.link_speed != SPEED_1000 &&
141 priv->port_state.link_speed != SPEED_10000 &&
142 priv->port_state.link_speed != SPEED_20000 &&
143 priv->port_state.link_speed != SPEED_40000 &&
144 priv->port_state.link_speed != SPEED_56000)
145 return priv->port_state.link_speed;
146
147 return 0;
148}
149
150
151void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf)
152{
153 struct mlx4_en_priv *priv = netdev_priv(dev);
154 struct mlx4_en_dev *mdev = priv->mdev;
155 int i, carrier_ok;
156
157 memset(buf, 0, sizeof(u64) * MLX4_EN_NUM_SELF_TEST);
158
159 if (*flags & ETH_TEST_FL_OFFLINE) {
160
161 carrier_ok = netif_carrier_ok(dev);
162
163 netif_carrier_off(dev);
164
165
166
167 msleep(200);
168
169 if (priv->mdev->dev->caps.flags &
170 MLX4_DEV_CAP_FLAG_UC_LOOPBACK) {
171 buf[3] = mlx4_en_test_registers(priv);
172 if (priv->port_up)
173 buf[4] = mlx4_en_test_loopback(priv);
174 }
175
176 if (carrier_ok)
177 netif_carrier_on(dev);
178
179 }
180 buf[0] = mlx4_test_interrupts(mdev->dev);
181 buf[1] = mlx4_en_test_link(priv);
182 buf[2] = mlx4_en_test_speed(priv);
183
184 for (i = 0; i < MLX4_EN_NUM_SELF_TEST; i++) {
185 if (buf[i])
186 *flags |= ETH_TEST_FL_FAILED;
187 }
188}
189