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33#include <linux/prefetch.h>
34#include <linux/ip.h>
35#include <linux/udp.h>
36#include <net/udp.h>
37#include "en.h"
38
39enum {
40 MLX5E_ST_LINK_STATE,
41 MLX5E_ST_LINK_SPEED,
42 MLX5E_ST_HEALTH_INFO,
43#ifdef CONFIG_INET
44 MLX5E_ST_LOOPBACK,
45#endif
46 MLX5E_ST_NUM,
47};
48
49const char mlx5e_self_tests[MLX5E_ST_NUM][ETH_GSTRING_LEN] = {
50 "Link Test",
51 "Speed Test",
52 "Health Test",
53#ifdef CONFIG_INET
54 "Loopback Test",
55#endif
56};
57
58int mlx5e_self_test_num(struct mlx5e_priv *priv)
59{
60 return ARRAY_SIZE(mlx5e_self_tests);
61}
62
63static int mlx5e_test_health_info(struct mlx5e_priv *priv)
64{
65 struct mlx5_core_health *health = &priv->mdev->priv.health;
66
67 return health->sick ? 1 : 0;
68}
69
70static int mlx5e_test_link_state(struct mlx5e_priv *priv)
71{
72 u8 port_state;
73
74 if (!netif_carrier_ok(priv->netdev))
75 return 1;
76
77 port_state = mlx5_query_vport_state(priv->mdev, MLX5_VPORT_STATE_OP_MOD_VNIC_VPORT, 0);
78 return port_state == VPORT_STATE_UP ? 0 : 1;
79}
80
81static int mlx5e_test_link_speed(struct mlx5e_priv *priv)
82{
83 u32 out[MLX5_ST_SZ_DW(ptys_reg)];
84 u32 eth_proto_oper;
85 int i;
86
87 if (!netif_carrier_ok(priv->netdev))
88 return 1;
89
90 if (mlx5_query_port_ptys(priv->mdev, out, sizeof(out), MLX5_PTYS_EN, 1))
91 return 1;
92
93 eth_proto_oper = MLX5_GET(ptys_reg, out, eth_proto_oper);
94 for (i = 0; i < MLX5E_LINK_MODES_NUMBER; i++) {
95 if (eth_proto_oper & MLX5E_PROT_MASK(i))
96 return 0;
97 }
98 return 1;
99}
100
101struct mlx5ehdr {
102 __be32 version;
103 __be64 magic;
104};
105
106#ifdef CONFIG_INET
107
108#define MLX5E_TEST_PKT_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) +\
109 sizeof(struct udphdr) + sizeof(struct mlx5ehdr))
110#define MLX5E_TEST_MAGIC 0x5AEED15C001ULL
111
112static struct sk_buff *mlx5e_test_get_udp_skb(struct mlx5e_priv *priv)
113{
114 struct sk_buff *skb = NULL;
115 struct mlx5ehdr *mlxh;
116 struct ethhdr *ethh;
117 struct udphdr *udph;
118 struct iphdr *iph;
119 int iplen;
120
121 skb = netdev_alloc_skb(priv->netdev, MLX5E_TEST_PKT_SIZE);
122 if (!skb) {
123 netdev_err(priv->netdev, "\tFailed to alloc loopback skb\n");
124 return NULL;
125 }
126
127 prefetchw(skb->data);
128 skb_reserve(skb, NET_IP_ALIGN);
129
130
131 ethh = skb_push(skb, ETH_HLEN);
132 skb_reset_mac_header(skb);
133
134 skb_set_network_header(skb, skb->len);
135 iph = skb_put(skb, sizeof(struct iphdr));
136
137 skb_set_transport_header(skb, skb->len);
138 udph = skb_put(skb, sizeof(struct udphdr));
139
140
141 ether_addr_copy(ethh->h_dest, priv->netdev->dev_addr);
142 eth_zero_addr(ethh->h_source);
143 ethh->h_proto = htons(ETH_P_IP);
144
145
146 udph->source = htons(9);
147 udph->dest = htons(9);
148 udph->len = htons(sizeof(struct mlx5ehdr) + sizeof(struct udphdr));
149 udph->check = 0;
150
151
152 iph->ihl = 5;
153 iph->ttl = 32;
154 iph->version = 4;
155 iph->protocol = IPPROTO_UDP;
156 iplen = sizeof(struct iphdr) + sizeof(struct udphdr) +
157 sizeof(struct mlx5ehdr);
158 iph->tot_len = htons(iplen);
159 iph->frag_off = 0;
160 iph->saddr = 0;
161 iph->daddr = 0;
162 iph->tos = 0;
163 iph->id = 0;
164 ip_send_check(iph);
165
166
167 mlxh = skb_put(skb, sizeof(*mlxh));
168 mlxh->version = 0;
169 mlxh->magic = cpu_to_be64(MLX5E_TEST_MAGIC);
170
171 skb->csum = 0;
172 skb->ip_summed = CHECKSUM_PARTIAL;
173 udp4_hwcsum(skb, iph->saddr, iph->daddr);
174
175 skb->protocol = htons(ETH_P_IP);
176 skb->pkt_type = PACKET_HOST;
177 skb->dev = priv->netdev;
178
179 return skb;
180}
181
182struct mlx5e_lbt_priv {
183 struct packet_type pt;
184 struct completion comp;
185 bool loopback_ok;
186 bool local_lb;
187};
188
189static int
190mlx5e_test_loopback_validate(struct sk_buff *skb,
191 struct net_device *ndev,
192 struct packet_type *pt,
193 struct net_device *orig_ndev)
194{
195 struct mlx5e_lbt_priv *lbtp = pt->af_packet_priv;
196 struct mlx5ehdr *mlxh;
197 struct ethhdr *ethh;
198 struct udphdr *udph;
199 struct iphdr *iph;
200
201
202 if (MLX5E_TEST_PKT_SIZE - ETH_HLEN > skb_headlen(skb))
203 goto out;
204
205 ethh = (struct ethhdr *)skb_mac_header(skb);
206 if (!ether_addr_equal(ethh->h_dest, orig_ndev->dev_addr))
207 goto out;
208
209 iph = ip_hdr(skb);
210 if (iph->protocol != IPPROTO_UDP)
211 goto out;
212
213
214 udph = (struct udphdr *)((u8 *)iph + 4 * iph->ihl);
215 if (udph->dest != htons(9))
216 goto out;
217
218 mlxh = (struct mlx5ehdr *)((char *)udph + sizeof(*udph));
219 if (mlxh->magic != cpu_to_be64(MLX5E_TEST_MAGIC))
220 goto out;
221
222
223 lbtp->loopback_ok = true;
224 complete(&lbtp->comp);
225out:
226 kfree_skb(skb);
227 return 0;
228}
229
230static int mlx5e_test_loopback_setup(struct mlx5e_priv *priv,
231 struct mlx5e_lbt_priv *lbtp)
232{
233 int err = 0;
234
235
236 err = mlx5_nic_vport_query_local_lb(priv->mdev, &lbtp->local_lb);
237 if (err)
238 return err;
239
240 if (!lbtp->local_lb) {
241 err = mlx5_nic_vport_update_local_lb(priv->mdev, true);
242 if (err)
243 return err;
244 }
245
246 err = mlx5e_refresh_tirs(priv, true);
247 if (err)
248 goto out;
249
250 lbtp->loopback_ok = false;
251 init_completion(&lbtp->comp);
252
253 lbtp->pt.type = htons(ETH_P_IP);
254 lbtp->pt.func = mlx5e_test_loopback_validate;
255 lbtp->pt.dev = priv->netdev;
256 lbtp->pt.af_packet_priv = lbtp;
257 dev_add_pack(&lbtp->pt);
258
259 return 0;
260
261out:
262 if (!lbtp->local_lb)
263 mlx5_nic_vport_update_local_lb(priv->mdev, false);
264
265 return err;
266}
267
268static void mlx5e_test_loopback_cleanup(struct mlx5e_priv *priv,
269 struct mlx5e_lbt_priv *lbtp)
270{
271 if (!lbtp->local_lb)
272 mlx5_nic_vport_update_local_lb(priv->mdev, false);
273
274 dev_remove_pack(&lbtp->pt);
275 mlx5e_refresh_tirs(priv, false);
276}
277
278#define MLX5E_LB_VERIFY_TIMEOUT (msecs_to_jiffies(200))
279static int mlx5e_test_loopback(struct mlx5e_priv *priv)
280{
281 struct mlx5e_lbt_priv *lbtp;
282 struct sk_buff *skb = NULL;
283 int err;
284
285 if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
286 netdev_err(priv->netdev,
287 "\tCan't perform loopback test while device is down\n");
288 return -ENODEV;
289 }
290
291 lbtp = kzalloc(sizeof(*lbtp), GFP_KERNEL);
292 if (!lbtp)
293 return -ENOMEM;
294 lbtp->loopback_ok = false;
295
296 err = mlx5e_test_loopback_setup(priv, lbtp);
297 if (err)
298 goto out;
299
300 skb = mlx5e_test_get_udp_skb(priv);
301 if (!skb) {
302 err = -ENOMEM;
303 goto cleanup;
304 }
305
306 skb_set_queue_mapping(skb, 0);
307 err = dev_queue_xmit(skb);
308 if (err) {
309 netdev_err(priv->netdev,
310 "\tFailed to xmit loopback packet err(%d)\n",
311 err);
312 goto cleanup;
313 }
314
315 wait_for_completion_timeout(&lbtp->comp, MLX5E_LB_VERIFY_TIMEOUT);
316 err = !lbtp->loopback_ok;
317
318cleanup:
319 mlx5e_test_loopback_cleanup(priv, lbtp);
320out:
321 kfree(lbtp);
322 return err;
323}
324#endif
325
326static int (*mlx5e_st_func[MLX5E_ST_NUM])(struct mlx5e_priv *) = {
327 mlx5e_test_link_state,
328 mlx5e_test_link_speed,
329 mlx5e_test_health_info,
330#ifdef CONFIG_INET
331 mlx5e_test_loopback,
332#endif
333};
334
335void mlx5e_self_test(struct net_device *ndev, struct ethtool_test *etest,
336 u64 *buf)
337{
338 struct mlx5e_priv *priv = netdev_priv(ndev);
339 int i;
340
341 memset(buf, 0, sizeof(u64) * MLX5E_ST_NUM);
342
343 mutex_lock(&priv->state_lock);
344 netdev_info(ndev, "Self test begin..\n");
345
346 for (i = 0; i < MLX5E_ST_NUM; i++) {
347 netdev_info(ndev, "\t[%d] %s start..\n",
348 i, mlx5e_self_tests[i]);
349 buf[i] = mlx5e_st_func[i](priv);
350 netdev_info(ndev, "\t[%d] %s end: result(%lld)\n",
351 i, mlx5e_self_tests[i], buf[i]);
352 }
353
354 mutex_unlock(&priv->state_lock);
355
356 for (i = 0; i < MLX5E_ST_NUM; i++) {
357 if (buf[i]) {
358 etest->flags |= ETH_TEST_FL_FAILED;
359 break;
360 }
361 }
362 netdev_info(ndev, "Self test out: status flags(0x%x)\n",
363 etest->flags);
364}
365
