svn commit: r334875 - head/sys/net

[Andrey V. Elsukov]

Author: ae
Date: Sat Jun  9 09:57:14 2018
New Revision: 334875
URL: https://svnweb.freebsd.org/changeset/base/334875

Log:
  Explicitly change the link state when we assingn an address.
  
  Since we are setting IFF_UP flag on SIOCSIFADDR, it is possible, that
  after this link state information still not initialized properly.
  This leads to problems with routing, since now interface has
  IFCAP_LINKSTATE capability and a route is considered as working only
  when interface's link state is in LINK_STATE_UP (see RT_LINK_IS_UP()
  macro).
  
  Reported by:	Marek Zarychta
  MFC after:	3 days

Modified:
  head/sys/net/if_loop.c

Modified: head/sys/net/if_loop.c
==============================================================================
--- head/sys/net/if_loop.c	Sat Jun  9 04:54:36 2018	(r334874)
+++ head/sys/net/if_loop.c	Sat Jun  9 09:57:14 2018	(r334875)
@@ -380,6 +380,7 @@ loioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 	case SIOCSIFADDR:
 		ifp->if_flags |= IFF_UP;
 		ifp->if_drv_flags |= IFF_DRV_RUNNING;
+		if_link_state_change(ifp, LINK_STATE_UP);
 		/*
 		 * Everything else is done at a higher level.
 		 */