From: matthieu castet <castet.matthieu@free.fr>
Date: Thu, 28 Sep 2006 17:57:25 +0000 (+0200)
Subject: [PATCH] ieee80211: allow mtu bigger than 1500
X-Git-Tag: v2.6.20-rc1~34^2~40^2~463^2~102
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=42a4cf9576f036db69e15fa6b4e72986e17f0359;p=linux-2.6

[PATCH] ieee80211: allow mtu bigger than 1500

Hi

this patch allow to set the mtu between 1500 and 2304 (max octets in an
MSDU) for devices using ieee80211 linux stack.

Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/net/ieee80211/ieee80211_module.c b/net/ieee80211/ieee80211_module.c
index 13b1e5fff7..2b14c2f3e2 100644
--- a/net/ieee80211/ieee80211_module.c
+++ b/net/ieee80211/ieee80211_module.c
@@ -118,6 +118,14 @@ static void ieee80211_networks_initialize(struct ieee80211_device *ieee)
 			      &ieee->network_free_list);
 }
 
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
+{
+	if ((new_mtu < 68) || (new_mtu > IEEE80211_DATA_LEN))
+		return -EINVAL;
+	dev->mtu = new_mtu;
+	return 0;
+}
+
 struct net_device *alloc_ieee80211(int sizeof_priv)
 {
 	struct ieee80211_device *ieee;
@@ -133,6 +141,7 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
 	}
 	ieee = netdev_priv(dev);
 	dev->hard_start_xmit = ieee80211_xmit;
+	dev->change_mtu = ieee80211_change_mtu;
 
 	ieee->dev = dev;