2 * Copyright (c) 2016, Mellanox Technologies, Ltd. All rights reserved.
4 * This software is available to you under a choice of one of two
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6 * General Public License (GPL) Version 2, available from the file
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15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
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21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/prefetch.h>
35 #include <linux/udp.h>
50 const char mlx5e_self_tests[MLX5E_ST_NUM][ETH_GSTRING_LEN] = {
59 int mlx5e_self_test_num(struct mlx5e_priv *priv)
61 return ARRAY_SIZE(mlx5e_self_tests);
64 static int mlx5e_test_health_info(struct mlx5e_priv *priv)
66 struct mlx5_core_health *health = &priv->mdev->priv.health;
68 return health->fatal_error ? 1 : 0;
71 static int mlx5e_test_link_state(struct mlx5e_priv *priv)
75 if (!netif_carrier_ok(priv->netdev))
78 port_state = mlx5_query_vport_state(priv->mdev, MLX5_VPORT_STATE_OP_MOD_VNIC_VPORT, 0);
79 return port_state == VPORT_STATE_UP ? 0 : 1;
82 static int mlx5e_test_link_speed(struct mlx5e_priv *priv)
86 if (!netif_carrier_ok(priv->netdev))
89 return mlx5e_port_linkspeed(priv->mdev, &speed);
99 #define MLX5E_TEST_PKT_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) +\
100 sizeof(struct udphdr) + sizeof(struct mlx5ehdr))
101 #define MLX5E_TEST_MAGIC 0x5AEED15C001ULL
103 static struct sk_buff *mlx5e_test_get_udp_skb(struct mlx5e_priv *priv)
105 struct sk_buff *skb = NULL;
106 struct mlx5ehdr *mlxh;
112 skb = netdev_alloc_skb(priv->netdev, MLX5E_TEST_PKT_SIZE);
114 netdev_err(priv->netdev, "\tFailed to alloc loopback skb\n");
118 prefetchw(skb->data);
119 skb_reserve(skb, NET_IP_ALIGN);
121 /* Reserve for ethernet and IP header */
122 ethh = skb_push(skb, ETH_HLEN);
123 skb_reset_mac_header(skb);
125 skb_set_network_header(skb, skb->len);
126 iph = skb_put(skb, sizeof(struct iphdr));
128 skb_set_transport_header(skb, skb->len);
129 udph = skb_put(skb, sizeof(struct udphdr));
131 /* Fill ETH header */
132 ether_addr_copy(ethh->h_dest, priv->netdev->dev_addr);
133 eth_zero_addr(ethh->h_source);
134 ethh->h_proto = htons(ETH_P_IP);
136 /* Fill UDP header */
137 udph->source = htons(9);
138 udph->dest = htons(9); /* Discard Protocol */
139 udph->len = htons(sizeof(struct mlx5ehdr) + sizeof(struct udphdr));
146 iph->protocol = IPPROTO_UDP;
147 iplen = sizeof(struct iphdr) + sizeof(struct udphdr) +
148 sizeof(struct mlx5ehdr);
149 iph->tot_len = htons(iplen);
157 /* Fill test header and data */
158 mlxh = skb_put(skb, sizeof(*mlxh));
160 mlxh->magic = cpu_to_be64(MLX5E_TEST_MAGIC);
163 skb->ip_summed = CHECKSUM_PARTIAL;
164 udp4_hwcsum(skb, iph->saddr, iph->daddr);
166 skb->protocol = htons(ETH_P_IP);
167 skb->pkt_type = PACKET_HOST;
168 skb->dev = priv->netdev;
173 struct mlx5e_lbt_priv {
174 struct packet_type pt;
175 struct completion comp;
181 mlx5e_test_loopback_validate(struct sk_buff *skb,
182 struct net_device *ndev,
183 struct packet_type *pt,
184 struct net_device *orig_ndev)
186 struct mlx5e_lbt_priv *lbtp = pt->af_packet_priv;
187 struct mlx5ehdr *mlxh;
192 /* We are only going to peek, no need to clone the SKB */
193 if (MLX5E_TEST_PKT_SIZE - ETH_HLEN > skb_headlen(skb))
196 ethh = (struct ethhdr *)skb_mac_header(skb);
197 if (!ether_addr_equal(ethh->h_dest, orig_ndev->dev_addr))
201 if (iph->protocol != IPPROTO_UDP)
204 /* Don't assume skb_transport_header() was set */
205 udph = (struct udphdr *)((u8 *)iph + 4 * iph->ihl);
206 if (udph->dest != htons(9))
209 mlxh = (struct mlx5ehdr *)((char *)udph + sizeof(*udph));
210 if (mlxh->magic != cpu_to_be64(MLX5E_TEST_MAGIC))
211 goto out; /* so close ! */
214 lbtp->loopback_ok = true;
215 complete(&lbtp->comp);
221 static int mlx5e_test_loopback_setup(struct mlx5e_priv *priv,
222 struct mlx5e_lbt_priv *lbtp)
226 /* Temporarily enable local_lb */
227 err = mlx5_nic_vport_query_local_lb(priv->mdev, &lbtp->local_lb);
231 if (!lbtp->local_lb) {
232 err = mlx5_nic_vport_update_local_lb(priv->mdev, true);
237 err = mlx5e_refresh_tirs(priv, true, false);
241 lbtp->loopback_ok = false;
242 init_completion(&lbtp->comp);
244 lbtp->pt.type = htons(ETH_P_IP);
245 lbtp->pt.func = mlx5e_test_loopback_validate;
246 lbtp->pt.dev = priv->netdev;
247 lbtp->pt.af_packet_priv = lbtp;
248 dev_add_pack(&lbtp->pt);
254 mlx5_nic_vport_update_local_lb(priv->mdev, false);
259 static void mlx5e_test_loopback_cleanup(struct mlx5e_priv *priv,
260 struct mlx5e_lbt_priv *lbtp)
263 mlx5_nic_vport_update_local_lb(priv->mdev, false);
265 dev_remove_pack(&lbtp->pt);
266 mlx5e_refresh_tirs(priv, false, false);
269 #define MLX5E_LB_VERIFY_TIMEOUT (msecs_to_jiffies(200))
270 static int mlx5e_test_loopback(struct mlx5e_priv *priv)
272 struct mlx5e_lbt_priv *lbtp;
273 struct sk_buff *skb = NULL;
276 if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
277 netdev_err(priv->netdev,
278 "\tCan't perform loopback test while device is down\n");
282 lbtp = kzalloc(sizeof(*lbtp), GFP_KERNEL);
285 lbtp->loopback_ok = false;
287 err = mlx5e_test_loopback_setup(priv, lbtp);
291 skb = mlx5e_test_get_udp_skb(priv);
297 skb_set_queue_mapping(skb, 0);
298 err = dev_queue_xmit(skb);
300 netdev_err(priv->netdev,
301 "\tFailed to xmit loopback packet err(%d)\n",
306 wait_for_completion_timeout(&lbtp->comp, MLX5E_LB_VERIFY_TIMEOUT);
307 err = !lbtp->loopback_ok;
310 mlx5e_test_loopback_cleanup(priv, lbtp);
317 static int (*mlx5e_st_func[MLX5E_ST_NUM])(struct mlx5e_priv *) = {
318 mlx5e_test_link_state,
319 mlx5e_test_link_speed,
320 mlx5e_test_health_info,
326 void mlx5e_self_test(struct net_device *ndev, struct ethtool_test *etest,
329 struct mlx5e_priv *priv = netdev_priv(ndev);
332 memset(buf, 0, sizeof(u64) * MLX5E_ST_NUM);
334 mutex_lock(&priv->state_lock);
335 netdev_info(ndev, "Self test begin..\n");
337 for (i = 0; i < MLX5E_ST_NUM; i++) {
338 netdev_info(ndev, "\t[%d] %s start..\n",
339 i, mlx5e_self_tests[i]);
340 buf[i] = mlx5e_st_func[i](priv);
341 netdev_info(ndev, "\t[%d] %s end: result(%lld)\n",
342 i, mlx5e_self_tests[i], buf[i]);
345 mutex_unlock(&priv->state_lock);
347 for (i = 0; i < MLX5E_ST_NUM; i++) {
349 etest->flags |= ETH_TEST_FL_FAILED;
353 netdev_info(ndev, "Self test out: status flags(0x%x)\n",