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netdev: Retry IF_OPER_UP 

Some drivers ignore the initial IF_OPER_UP setting that was sent during
netdev_connect_ok().  Attempt to work around this by parsing New Link
events.  If OperState setting is still not correct in a subsequent event,
retry setting OperState to IF_OPER_UP.
This commit is contained in:
Denis Kenzior 2021-08-18 20:11:16 -05:00
parent 47ebd81393
commit a75126af39
1 changed files with 26 additions and 0 deletions
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26
src/netdev.c
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@ -5589,6 +5589,8 @@ static void netdev_newlink_notify(const struct ifinfomsg *ifi, int bytes)
char old_name[IFNAMSIZ];
uint8_t old_addr[ETH_ALEN];
struct rtattr *attr;
uint8_t *operstate = NULL;
uint8_t *linkmode = NULL;
if (ifi->ifi_family == AF_BRIDGE) {
netdev_bridge_port_event(ifi, bytes, true);
@ -5617,12 +5619,36 @@ static void netdev_newlink_notify(const struct ifinfomsg *ifi, int bytes)
memcpy(netdev->addr, RTA_DATA(attr), ETH_ALEN);
break;
case IFLA_OPERSTATE:
operstate = RTA_DATA(attr);
break;
case IFLA_LINKMODE:
linkmode = RTA_DATA(attr);
break;
}
}
if (!netdev->events_ready) /* Did we send NETDEV_WATCH_EVENT_NEW yet? */
return;
/*
* Sometimes the driver sends the Association / Connect event on the
* nl80211 interface before the driver is ready to accept IF_OPER_UP
* setting on the rtnl interface. This results in our initial
* IF_OPER_UP setting being ignored. In this case the driver will
* send a New Link event with a stale OperState. Detect this case and
* try to re-set IF_OPER_UP.
*/
if (linkmode && *linkmode == 1 &&
operstate && *operstate == IF_OPER_DORMANT &&
netdev->operational) {
l_debug("Retrying setting OperState to IF_OPER_UP");
l_rtnl_set_linkmode_and_operstate(rtnl, netdev->index,
IF_LINK_MODE_DORMANT, IF_OPER_UP,
netdev_operstate_cb,
L_UINT_TO_PTR(netdev->index), NULL);
}
new_up = netdev_get_is_up(netdev);
/*