aboutsummaryrefslogtreecommitdiffstats
path: root/net/bridge/br_stp_bpdu.c
diff options
context:
space:
mode:
authorEric W. Biederman <ebiederm@xmission.com>2007-09-17 11:53:39 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:49:08 -0700
commite730c15519d09ea528b4d2f1103681fa5937c0e6 (patch)
treec117294523f4d004fb1d740610b6403e5744cdfc /net/bridge/br_stp_bpdu.c
parent[NET]: Initialize the network namespace of network devices. (diff)
downloadlinux-dev-e730c15519d09ea528b4d2f1103681fa5937c0e6.tar.xz
linux-dev-e730c15519d09ea528b4d2f1103681fa5937c0e6.zip
[NET]: Make packet reception network namespace safe
This patch modifies every packet receive function registered with dev_add_pack() to drop packets if they are not from the initial network namespace. This should ensure that the various network stacks do not receive packets in a anything but the initial network namespace until the code has been converted and is ready for them. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_stp_bpdu.c')
-rw-r--r--net/bridge/br_stp_bpdu.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 14f0c888eecc..0edbd2a1c3f3 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -17,6 +17,7 @@
#include <linux/netfilter_bridge.h>
#include <linux/etherdevice.h>
#include <linux/llc.h>
+#include <net/net_namespace.h>
#include <net/llc.h>
#include <net/llc_pdu.h>
#include <asm/unaligned.h>
@@ -141,6 +142,9 @@ int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
struct net_bridge *br;
const unsigned char *buf;
+ if (dev->nd_net != &init_net)
+ goto err;
+
if (!p)
goto err;