From: Sven Eckelmann Date: Wed, 19 Jul 2023 07:29:29 +0000 (+0200) Subject: batman-adv: Trigger events for auto adjusted MTU X-Git-Tag: v6.6.17~4175^2~34^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c6a953cce8d0438391e6da48c8d0793d3fbfcfa6;p=platform%2Fkernel%2Flinux-rpi.git 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: c6c8fea29769 ("net: Add batman-adv meshing protocol") Cc: stable@vger.kernel.org Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 41c1ad3..ae5762a 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -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.