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authorTom Gundersen <teg@jklm.no>2015-06-29 14:24:40 +0200
committerTom Gundersen <teg@jklm.no>2015-06-29 14:26:36 +0200
commit62e2d5bbabf0e6a5a262e9e1bed184552d98b0d9 (patch)
tree7fa6d912fc2e250de8e56be149a55386ae19cbb9 /src/network
parentb024a9cfb1bee0aa8e143f46db11a4c2a58fb798 (diff)
networkd: netdev - avoid hanging transactions in failure cases
If a link is attempted t obe enslaved by a netdev that has already failed, we must fail immediately and not save the callback for later, as it will then never get triggered.
Diffstat (limited to 'src/network')
-rw-r--r--src/network/networkd-link.c3
-rw-r--r--src/network/networkd-netdev.c11
2 files changed, 12 insertions, 2 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 16243a5352..dff81a5cf0 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -1360,8 +1360,7 @@ static int link_joined(Link *link) {
return link_enter_set_addresses(link);
}
-static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m,
- void *userdata) {
+static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
diff --git a/src/network/networkd-netdev.c b/src/network/networkd-netdev.c
index 73d3b6bf6c..6949b403c8 100644
--- a/src/network/networkd-netdev.c
+++ b/src/network/networkd-netdev.c
@@ -96,6 +96,7 @@ static void netdev_cancel_callbacks(NetDev *netdev) {
}
LIST_REMOVE(callbacks, netdev->callbacks, callback);
+ link_unref(callback->link);
free(callback);
}
}
@@ -177,6 +178,8 @@ int netdev_get(Manager *manager, const char *name, NetDev **ret) {
static int netdev_enter_failed(NetDev *netdev) {
netdev->state = NETDEV_STATE_FAILED;
+ netdev_cancel_callbacks(netdev);
+
return 0;
}
@@ -266,12 +269,20 @@ int netdev_enslave(NetDev *netdev, Link *link, sd_netlink_message_handler_t call
int r;
assert(netdev);
+ assert(netdev->manager);
+ assert(netdev->manager->rtnl);
assert(IN_SET(netdev->kind, NETDEV_KIND_BRIDGE, NETDEV_KIND_BOND));
if (netdev->state == NETDEV_STATE_READY) {
r = netdev_enslave_ready(netdev, link, callback);
if (r < 0)
return r;
+ } else if (IN_SET(netdev->state, NETDEV_STATE_LINGER, NETDEV_STATE_FAILED)) {
+ _cleanup_netlink_message_unref_ sd_netlink_message *m = NULL;
+
+ r = rtnl_message_new_synthetic_error(-ENODEV, 0, &m);
+ if (r >= 0)
+ callback(netdev->manager->rtnl, m, link);
} else {
/* the netdev is not yet read, save this request for when it is */
netdev_join_callback *cb;