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batman-adv: warn if added interface is part of a bridge

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Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Marek Lindner 2011-12-07 18:02:50 +08:00
parent a04ccd5970
commit 6e242f9037
1 changed files with 8 additions and 0 deletions
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8
net/batman-adv/hard-interface.c
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@ -281,6 +281,14 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
if (!atomic_inc_not_zero(&hard_iface->refcount))
goto out;
/* hard-interface is part of a bridge */
if (hard_iface->net_dev->priv_flags & IFF_BRIDGE_PORT)
pr_err("You are about to enable batman-adv on '%s' which "
"already is part of a bridge. Unless you know exactly "
"what you are doing this is probably wrong and won't "
"work the way you think it would.\n",
hard_iface->net_dev->name);
soft_iface = dev_get_by_name(&init_net, iface_name);
if (!soft_iface) {