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| author | Eric W. Biederman <ebiederm@xmission.com> | 2007-09-17 11:53:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 16:49:08 -0700 |
| commit | e730c15519d09ea528b4d2f1103681fa5937c0e6 (patch) | |
| tree | c117294523f4d004fb1d740610b6403e5744cdfc /net/llc | |
| parent | 6d34b1c27a72d5d1c73c567b2f6b1fde316e0eae (diff) | |
| download | lwn-e730c15519d09ea528b4d2f1103681fa5937c0e6.tar.gz lwn-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/llc')
| -rw-r--r-- | net/llc/llc_input.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/llc/llc_input.c b/net/llc/llc_input.c index 099ed8fec145..c40c9b2a345a 100644 --- a/net/llc/llc_input.c +++ b/net/llc/llc_input.c @@ -12,6 +12,7 @@ * See the GNU General Public License for more details. */ #include <linux/netdevice.h> +#include <net/net_namespace.h> #include <net/llc.h> #include <net/llc_pdu.h> #include <net/llc_sap.h> @@ -145,6 +146,9 @@ int llc_rcv(struct sk_buff *skb, struct net_device *dev, int (*rcv)(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *); + if (dev->nd_net != &init_net) + goto drop; + /* * When the interface is in promisc. mode, drop all the crap that it * receives, do not try to analyse it. |