net/tap: restore state of remote device when closing

[dpdk.git] / drivers / net / tap / rte_eth_tap.c

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 89b24ce..a4e5d11 100644 (file)
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -569,7 +569,7 @@ tap_link_set_down(struct rte_eth_dev *dev)
        struct ifreq ifr = { .ifr_flags = IFF_UP };
 
        dev->data->dev_link.link_status = ETH_LINK_DOWN;
-       return tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_AND_REMOTE);
+       return tap_ioctl(pmd, SIOCSIFFLAGS, &ifr, 0, LOCAL_ONLY);
 }
 
 static int
@@ -735,6 +735,12 @@ tap_dev_close(struct rte_eth_dev *dev)
                internals->rxq[i].fd = -1;
                internals->txq[i].fd = -1;
        }
+
+       if (internals->remote_if_index) {
+               /* Restore initial remote state */
+               ioctl(internals->ioctl_sock, SIOCSIFFLAGS,
+                               &internals->remote_initial_flags);
+       }
 }
 
 static void
@@ -1320,6 +1326,11 @@ eth_dev_tap_create(struct rte_vdev_device *vdev, char *tap_name,
                }
                snprintf(pmd->remote_iface, RTE_ETH_NAME_MAX_LEN,
                         "%s", remote_iface);
+
+               /* Save state of remote device */
+               tap_ioctl(pmd, SIOCGIFFLAGS, &pmd->remote_initial_flags, 0, REMOTE_ONLY);
+
+               /* Replicate remote MAC address */
                if (tap_ioctl(pmd, SIOCGIFHWADDR, &ifr, 0, REMOTE_ONLY) < 0) {
                        RTE_LOG(ERR, PMD, "%s: failed to get %s MAC address.",
                                pmd->name, pmd->remote_iface);