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[21/21] Staging: batman-adv: Update mtu of bat device by changing mtu of slave device

Message ID 1283644718-653-22-git-send-email-sven.eckelmann@gmx.de (mailing list archive)
State Not Applicable, archived
Headers

Commit Message

Sven Eckelmann Sept. 4, 2010, 11:58 p.m. UTC 
  We must reduce our own mtu when we reduce the mtu of any device we use
to transfer our packets. Otherwise we may accept to large packets which
gets dropped by the actual device.

Reported-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
---
 drivers/staging/batman-adv/hard-interface.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/drivers/staging/batman-adv/hard-interface.c b/drivers/staging/batman-adv/hard-interface.c
index a58a89a..a587da9 100644
--- a/drivers/staging/batman-adv/hard-interface.c
+++ b/drivers/staging/batman-adv/hard-interface.c
@@ -469,6 +469,10 @@  static int hard_if_event(struct notifier_block *this,
 	case NETDEV_UNREGISTER:
 		hardif_remove_interface(batman_if);
 		break;
+	case NETDEV_CHANGEMTU:
+		if (batman_if->soft_iface)
+			update_min_mtu(batman_if->soft_iface);
+		break;
 	case NETDEV_CHANGEADDR:
 		if (batman_if->if_status == IF_NOT_IN_USE)
 			goto out;