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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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
34 #include <linux/udp.h>
49 const char mlx5e_self_tests[MLX5E_ST_NUM][ETH_GSTRING_LEN] = {
58 int mlx5e_self_test_num(struct mlx5e_priv *priv)
60 return ARRAY_SIZE(mlx5e_self_tests);
63 static int mlx5e_test_health_info(struct mlx5e_priv *priv)
65 struct mlx5_core_health *health = &priv->mdev->priv.health;
67 return health->fatal_error ? 1 : 0;
70 static int mlx5e_test_link_state(struct mlx5e_priv *priv)
74 if (!netif_carrier_ok(priv->netdev))
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;
81 static int mlx5e_test_link_speed(struct mlx5e_priv *priv)
85 if (!netif_carrier_ok(priv->netdev))
88 return mlx5e_port_linkspeed(priv->mdev, &speed);
98 #define MLX5E_TEST_PKT_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) +\
99 sizeof(struct udphdr) + sizeof(struct mlx5ehdr))
100 #define MLX5E_TEST_MAGIC 0x5AEED15C001ULL
102 static struct sk_buff *mlx5e_test_get_udp_skb(struct mlx5e_priv *priv)
104 struct sk_buff *skb = NULL;
105 struct mlx5ehdr *mlxh;
111 skb = netdev_alloc_skb(priv->netdev, MLX5E_TEST_PKT_SIZE);
113 netdev_err(priv->netdev, "\tFailed to alloc loopback skb\n");
117 net_prefetchw(skb->data);
118 skb_reserve(skb, NET_IP_ALIGN);
120 /* Reserve for ethernet and IP header */
121 ethh = skb_push(skb, ETH_HLEN);
122 skb_reset_mac_header(skb);
124 skb_set_network_header(skb, skb->len);
125 iph = skb_put(skb, sizeof(struct iphdr));
127 skb_set_transport_header(skb, skb->len);
128 udph = skb_put(skb, sizeof(struct udphdr));
130 /* Fill ETH header */
131 ether_addr_copy(ethh->h_dest, priv->netdev->dev_addr);
132 eth_zero_addr(ethh->h_source);
133 ethh->h_proto = htons(ETH_P_IP);
135 /* Fill UDP header */
136 udph->source = htons(9);
137 udph->dest = htons(9); /* Discard Protocol */
138 udph->len = htons(sizeof(struct mlx5ehdr) + sizeof(struct udphdr));
145 iph->protocol = IPPROTO_UDP;
146 iplen = sizeof(struct iphdr) + sizeof(struct udphdr) +
147 sizeof(struct mlx5ehdr);
148 iph->tot_len = htons(iplen);
156 /* Fill test header and data */
157 mlxh = skb_put(skb, sizeof(*mlxh));
159 mlxh->magic = cpu_to_be64(MLX5E_TEST_MAGIC);
162 skb->ip_summed = CHECKSUM_PARTIAL;
163 udp4_hwcsum(skb, iph->saddr, iph->daddr);
165 skb->protocol = htons(ETH_P_IP);
166 skb->pkt_type = PACKET_HOST;
167 skb->dev = priv->netdev;
172 struct mlx5e_lbt_priv {
173 struct packet_type pt;
174 struct completion comp;
180 mlx5e_test_loopback_validate(struct sk_buff *skb,
181 struct net_device *ndev,
182 struct packet_type *pt,
183 struct net_device *orig_ndev)
185 struct mlx5e_lbt_priv *lbtp = pt->af_packet_priv;
186 struct mlx5ehdr *mlxh;
191 /* We are only going to peek, no need to clone the SKB */
192 if (MLX5E_TEST_PKT_SIZE - ETH_HLEN > skb_headlen(skb))
195 ethh = (struct ethhdr *)skb_mac_header(skb);
196 if (!ether_addr_equal(ethh->h_dest, orig_ndev->dev_addr))
200 if (iph->protocol != IPPROTO_UDP)
203 /* Don't assume skb_transport_header() was set */
204 udph = (struct udphdr *)((u8 *)iph + 4 * iph->ihl);
205 if (udph->dest != htons(9))
208 mlxh = (struct mlx5ehdr *)((char *)udph + sizeof(*udph));
209 if (mlxh->magic != cpu_to_be64(MLX5E_TEST_MAGIC))
210 goto out; /* so close ! */
213 lbtp->loopback_ok = true;
214 complete(&lbtp->comp);
220 static int mlx5e_test_loopback_setup(struct mlx5e_priv *priv,
221 struct mlx5e_lbt_priv *lbtp)
225 /* Temporarily enable local_lb */
226 err = mlx5_nic_vport_query_local_lb(priv->mdev, &lbtp->local_lb);
230 if (!lbtp->local_lb) {
231 err = mlx5_nic_vport_update_local_lb(priv->mdev, true);
236 err = mlx5e_refresh_tirs(priv, true, false);
240 lbtp->loopback_ok = false;
241 init_completion(&lbtp->comp);
243 lbtp->pt.type = htons(ETH_P_IP);
244 lbtp->pt.func = mlx5e_test_loopback_validate;
245 lbtp->pt.dev = priv->netdev;
246 lbtp->pt.af_packet_priv = lbtp;
247 dev_add_pack(&lbtp->pt);
253 mlx5_nic_vport_update_local_lb(priv->mdev, false);
258 static void mlx5e_test_loopback_cleanup(struct mlx5e_priv *priv,
259 struct mlx5e_lbt_priv *lbtp)
262 mlx5_nic_vport_update_local_lb(priv->mdev, false);
264 dev_remove_pack(&lbtp->pt);
265 mlx5e_refresh_tirs(priv, false, false);
268 #define MLX5E_LB_VERIFY_TIMEOUT (msecs_to_jiffies(200))
269 static int mlx5e_test_loopback(struct mlx5e_priv *priv)
271 struct mlx5e_lbt_priv *lbtp;
272 struct sk_buff *skb = NULL;
275 if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
276 netdev_err(priv->netdev,
277 "\tCan't perform loopback test while device is down\n");
281 lbtp = kzalloc(sizeof(*lbtp), GFP_KERNEL);
284 lbtp->loopback_ok = false;
286 err = mlx5e_test_loopback_setup(priv, lbtp);
290 skb = mlx5e_test_get_udp_skb(priv);
296 skb_set_queue_mapping(skb, 0);
297 err = dev_queue_xmit(skb);
299 netdev_err(priv->netdev,
300 "\tFailed to xmit loopback packet err(%d)\n",
305 wait_for_completion_timeout(&lbtp->comp, MLX5E_LB_VERIFY_TIMEOUT);
306 err = !lbtp->loopback_ok;
309 mlx5e_test_loopback_cleanup(priv, lbtp);
316 static int (*mlx5e_st_func[MLX5E_ST_NUM])(struct mlx5e_priv *) = {
317 mlx5e_test_link_state,
318 mlx5e_test_link_speed,
319 mlx5e_test_health_info,
325 void mlx5e_self_test(struct net_device *ndev, struct ethtool_test *etest,
328 struct mlx5e_priv *priv = netdev_priv(ndev);
331 memset(buf, 0, sizeof(u64) * MLX5E_ST_NUM);
333 mutex_lock(&priv->state_lock);
334 netdev_info(ndev, "Self test begin..\n");
336 for (i = 0; i < MLX5E_ST_NUM; i++) {
337 netdev_info(ndev, "\t[%d] %s start..\n",
338 i, mlx5e_self_tests[i]);
339 buf[i] = mlx5e_st_func[i](priv);
340 netdev_info(ndev, "\t[%d] %s end: result(%lld)\n",
341 i, mlx5e_self_tests[i], buf[i]);
344 mutex_unlock(&priv->state_lock);
346 for (i = 0; i < MLX5E_ST_NUM; i++) {
348 etest->flags |= ETH_TEST_FL_FAILED;
352 netdev_info(ndev, "Self test out: status flags(0x%x)\n",