mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

batman-adv: Trigger events for auto adjusted MTU 

If an interface changes the MTU, it is expected that an NETDEV_PRECHANGEMTU
and NETDEV_CHANGEMTU notification events is triggered. This worked fine for
.ndo_change_mtu based changes because core networking code took care of it.
But for auto-adjustments after hard-interfaces changes, these events were
simply missing.

Due to this problem, non-batman-adv components weren't aware of MTU changes
and thus couldn't perform their own tasks correctly.

Fixes: c6c8fea297 ("net: Add batman-adv meshing protocol")
Cc: stable@vger.kernel.org
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This commit is contained in:
Sven Eckelmann 2023-07-19 09:29:29 +02:00 committed by Simon Wunderlich
parent 06c2afb862
commit c6a953cce8
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/batman-adv/hard-interface.c
View File

@ -630,7 +630,7 @@ out:
*/
void batadv_update_min_mtu(struct net_device *soft_iface)
{
soft_iface->mtu = batadv_hardif_min_mtu(soft_iface);
dev_set_mtu(soft_iface, batadv_hardif_min_mtu(soft_iface));
/* Check if the local translate table should be cleaned up to match a
* new (and smaller) MTU.