1 /*
2 * Copyright (c) 2016, Mellanox Technologies, Ltd. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #include <linux/ip.h>
34 #include <linux/udp.h>
35 #include <net/udp.h>
36 #include "en.h"
37 #include "en/port.h"
38 #include "eswitch.h"
39
mlx5e_test_health_info(struct mlx5e_priv * priv)40 static int mlx5e_test_health_info(struct mlx5e_priv *priv)
41 {
42 struct mlx5_core_health *health = &priv->mdev->priv.health;
43
44 return health->fatal_error ? 1 : 0;
45 }
46
mlx5e_test_link_state(struct mlx5e_priv * priv)47 static int mlx5e_test_link_state(struct mlx5e_priv *priv)
48 {
49 u8 port_state;
50
51 if (!netif_carrier_ok(priv->netdev))
52 return 1;
53
54 port_state = mlx5_query_vport_state(priv->mdev, MLX5_VPORT_STATE_OP_MOD_VNIC_VPORT, 0);
55 return port_state == VPORT_STATE_UP ? 0 : 1;
56 }
57
mlx5e_test_link_speed(struct mlx5e_priv * priv)58 static int mlx5e_test_link_speed(struct mlx5e_priv *priv)
59 {
60 u32 speed;
61
62 if (!netif_carrier_ok(priv->netdev))
63 return 1;
64
65 return mlx5e_port_linkspeed(priv->mdev, &speed);
66 }
67
68 struct mlx5ehdr {
69 __be32 version;
70 __be64 magic;
71 };
72
73 #ifdef CONFIG_INET
74 /* loopback test */
75 #define MLX5E_TEST_PKT_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) +\
76 sizeof(struct udphdr) + sizeof(struct mlx5ehdr))
77 #define MLX5E_TEST_MAGIC 0x5AEED15C001ULL
78
mlx5e_test_get_udp_skb(struct mlx5e_priv * priv)79 static struct sk_buff *mlx5e_test_get_udp_skb(struct mlx5e_priv *priv)
80 {
81 struct sk_buff *skb = NULL;
82 struct mlx5ehdr *mlxh;
83 struct ethhdr *ethh;
84 struct udphdr *udph;
85 struct iphdr *iph;
86 int iplen;
87
88 skb = netdev_alloc_skb(priv->netdev, MLX5E_TEST_PKT_SIZE);
89 if (!skb) {
90 netdev_err(priv->netdev, "\tFailed to alloc loopback skb\n");
91 return NULL;
92 }
93
94 net_prefetchw(skb->data);
95 skb_reserve(skb, NET_IP_ALIGN);
96
97 /* Reserve for ethernet and IP header */
98 ethh = skb_push(skb, ETH_HLEN);
99 skb_reset_mac_header(skb);
100
101 skb_set_network_header(skb, skb->len);
102 iph = skb_put(skb, sizeof(struct iphdr));
103
104 skb_set_transport_header(skb, skb->len);
105 udph = skb_put(skb, sizeof(struct udphdr));
106
107 /* Fill ETH header */
108 ether_addr_copy(ethh->h_dest, priv->netdev->dev_addr);
109 eth_zero_addr(ethh->h_source);
110 ethh->h_proto = htons(ETH_P_IP);
111
112 /* Fill UDP header */
113 udph->source = htons(9);
114 udph->dest = htons(9); /* Discard Protocol */
115 udph->len = htons(sizeof(struct mlx5ehdr) + sizeof(struct udphdr));
116 udph->check = 0;
117
118 /* Fill IP header */
119 iph->ihl = 5;
120 iph->ttl = 32;
121 iph->version = 4;
122 iph->protocol = IPPROTO_UDP;
123 iplen = sizeof(struct iphdr) + sizeof(struct udphdr) +
124 sizeof(struct mlx5ehdr);
125 iph->tot_len = htons(iplen);
126 iph->frag_off = 0;
127 iph->saddr = 0;
128 iph->daddr = 0;
129 iph->tos = 0;
130 iph->id = 0;
131 ip_send_check(iph);
132
133 /* Fill test header and data */
134 mlxh = skb_put(skb, sizeof(*mlxh));
135 mlxh->version = 0;
136 mlxh->magic = cpu_to_be64(MLX5E_TEST_MAGIC);
137
138 skb->csum = 0;
139 skb->ip_summed = CHECKSUM_PARTIAL;
140 udp4_hwcsum(skb, iph->saddr, iph->daddr);
141
142 skb->protocol = htons(ETH_P_IP);
143 skb->pkt_type = PACKET_HOST;
144 skb->dev = priv->netdev;
145
146 return skb;
147 }
148
149 struct mlx5e_lbt_priv {
150 struct packet_type pt;
151 struct completion comp;
152 bool loopback_ok;
153 bool local_lb;
154 };
155
156 static int
mlx5e_test_loopback_validate(struct sk_buff * skb,struct net_device * ndev,struct packet_type * pt,struct net_device * orig_ndev)157 mlx5e_test_loopback_validate(struct sk_buff *skb,
158 struct net_device *ndev,
159 struct packet_type *pt,
160 struct net_device *orig_ndev)
161 {
162 struct mlx5e_lbt_priv *lbtp = pt->af_packet_priv;
163 struct mlx5ehdr *mlxh;
164 struct ethhdr *ethh;
165 struct udphdr *udph;
166 struct iphdr *iph;
167
168 /* We are only going to peek, no need to clone the SKB */
169 if (MLX5E_TEST_PKT_SIZE - ETH_HLEN > skb_headlen(skb))
170 goto out;
171
172 ethh = (struct ethhdr *)skb_mac_header(skb);
173 if (!ether_addr_equal(ethh->h_dest, orig_ndev->dev_addr))
174 goto out;
175
176 iph = ip_hdr(skb);
177 if (iph->protocol != IPPROTO_UDP)
178 goto out;
179
180 /* Don't assume skb_transport_header() was set */
181 udph = (struct udphdr *)((u8 *)iph + 4 * iph->ihl);
182 if (udph->dest != htons(9))
183 goto out;
184
185 mlxh = (struct mlx5ehdr *)((char *)udph + sizeof(*udph));
186 if (mlxh->magic != cpu_to_be64(MLX5E_TEST_MAGIC))
187 goto out; /* so close ! */
188
189 /* bingo */
190 lbtp->loopback_ok = true;
191 complete(&lbtp->comp);
192 out:
193 kfree_skb(skb);
194 return 0;
195 }
196
mlx5e_test_loopback_setup(struct mlx5e_priv * priv,struct mlx5e_lbt_priv * lbtp)197 static int mlx5e_test_loopback_setup(struct mlx5e_priv *priv,
198 struct mlx5e_lbt_priv *lbtp)
199 {
200 int err = 0;
201
202 /* Temporarily enable local_lb */
203 err = mlx5_nic_vport_query_local_lb(priv->mdev, &lbtp->local_lb);
204 if (err)
205 return err;
206
207 if (!lbtp->local_lb) {
208 err = mlx5_nic_vport_update_local_lb(priv->mdev, true);
209 if (err)
210 return err;
211 }
212
213 err = mlx5e_refresh_tirs(priv, true, false);
214 if (err)
215 goto out;
216
217 lbtp->loopback_ok = false;
218 init_completion(&lbtp->comp);
219
220 lbtp->pt.type = htons(ETH_P_IP);
221 lbtp->pt.func = mlx5e_test_loopback_validate;
222 lbtp->pt.dev = priv->netdev;
223 lbtp->pt.af_packet_priv = lbtp;
224 dev_add_pack(&lbtp->pt);
225
226 return 0;
227
228 out:
229 if (!lbtp->local_lb)
230 mlx5_nic_vport_update_local_lb(priv->mdev, false);
231
232 return err;
233 }
234
mlx5e_test_loopback_cleanup(struct mlx5e_priv * priv,struct mlx5e_lbt_priv * lbtp)235 static void mlx5e_test_loopback_cleanup(struct mlx5e_priv *priv,
236 struct mlx5e_lbt_priv *lbtp)
237 {
238 if (!lbtp->local_lb)
239 mlx5_nic_vport_update_local_lb(priv->mdev, false);
240
241 dev_remove_pack(&lbtp->pt);
242 mlx5e_refresh_tirs(priv, false, false);
243 }
244
mlx5e_cond_loopback(struct mlx5e_priv * priv)245 static int mlx5e_cond_loopback(struct mlx5e_priv *priv)
246 {
247 if (is_mdev_switchdev_mode(priv->mdev))
248 return -EOPNOTSUPP;
249
250 return 0;
251 }
252
253 #define MLX5E_LB_VERIFY_TIMEOUT (msecs_to_jiffies(200))
mlx5e_test_loopback(struct mlx5e_priv * priv)254 static int mlx5e_test_loopback(struct mlx5e_priv *priv)
255 {
256 struct mlx5e_lbt_priv *lbtp;
257 struct sk_buff *skb = NULL;
258 int err;
259
260 if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
261 netdev_err(priv->netdev,
262 "\tCan't perform loopback test while device is down\n");
263 return -ENODEV;
264 }
265
266 lbtp = kzalloc(sizeof(*lbtp), GFP_KERNEL);
267 if (!lbtp)
268 return -ENOMEM;
269 lbtp->loopback_ok = false;
270
271 err = mlx5e_test_loopback_setup(priv, lbtp);
272 if (err)
273 goto out;
274
275 skb = mlx5e_test_get_udp_skb(priv);
276 if (!skb) {
277 err = -ENOMEM;
278 goto cleanup;
279 }
280
281 skb_set_queue_mapping(skb, 0);
282 err = dev_queue_xmit(skb);
283 if (err) {
284 netdev_err(priv->netdev,
285 "\tFailed to xmit loopback packet err(%d)\n",
286 err);
287 goto cleanup;
288 }
289
290 wait_for_completion_timeout(&lbtp->comp, MLX5E_LB_VERIFY_TIMEOUT);
291 err = !lbtp->loopback_ok;
292
293 cleanup:
294 mlx5e_test_loopback_cleanup(priv, lbtp);
295 out:
296 kfree(lbtp);
297 return err;
298 }
299 #endif
300
301 typedef int (*mlx5e_st_func)(struct mlx5e_priv *);
302
303 struct mlx5e_st {
304 char name[ETH_GSTRING_LEN];
305 mlx5e_st_func st_func;
306 mlx5e_st_func cond_func;
307 };
308
309 static struct mlx5e_st mlx5e_sts[] = {
310 { "Link Test", mlx5e_test_link_state },
311 { "Speed Test", mlx5e_test_link_speed },
312 { "Health Test", mlx5e_test_health_info },
313 #ifdef CONFIG_INET
314 { "Loopback Test", mlx5e_test_loopback, mlx5e_cond_loopback },
315 #endif
316 };
317
318 #define MLX5E_ST_NUM ARRAY_SIZE(mlx5e_sts)
319
mlx5e_self_test(struct net_device * ndev,struct ethtool_test * etest,u64 * buf)320 void mlx5e_self_test(struct net_device *ndev, struct ethtool_test *etest,
321 u64 *buf)
322 {
323 struct mlx5e_priv *priv = netdev_priv(ndev);
324 int i, count = 0;
325
326 mutex_lock(&priv->state_lock);
327 netdev_info(ndev, "Self test begin..\n");
328
329 for (i = 0; i < MLX5E_ST_NUM; i++) {
330 struct mlx5e_st st = mlx5e_sts[i];
331
332 if (st.cond_func && st.cond_func(priv))
333 continue;
334 netdev_info(ndev, "\t[%d] %s start..\n", i, st.name);
335 buf[count] = st.st_func(priv);
336 netdev_info(ndev, "\t[%d] %s end: result(%lld)\n", i, st.name, buf[count]);
337 count++;
338 }
339
340 mutex_unlock(&priv->state_lock);
341
342 for (i = 0; i < count; i++) {
343 if (buf[i]) {
344 etest->flags |= ETH_TEST_FL_FAILED;
345 break;
346 }
347 }
348 netdev_info(ndev, "Self test out: status flags(0x%x)\n",
349 etest->flags);
350 }
351
mlx5e_self_test_fill_strings(struct mlx5e_priv * priv,u8 * data)352 int mlx5e_self_test_fill_strings(struct mlx5e_priv *priv, u8 *data)
353 {
354 int i, count = 0;
355
356 for (i = 0; i < MLX5E_ST_NUM; i++) {
357 struct mlx5e_st st = mlx5e_sts[i];
358
359 if (st.cond_func && st.cond_func(priv))
360 continue;
361 if (data)
362 strcpy(data + count * ETH_GSTRING_LEN, st.name);
363 count++;
364 }
365 return count;
366 }
367
mlx5e_self_test_num(struct mlx5e_priv * priv)368 int mlx5e_self_test_num(struct mlx5e_priv *priv)
369 {
370 return mlx5e_self_test_fill_strings(priv, NULL);
371 }
372
