From e730c15519d09ea528b4d2f1103681fa5937c0e6 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 17 Sep 2007 11:53:39 -0700 Subject: [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 Signed-off-by: David S. Miller --- net/tipc/eth_media.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'net/tipc') diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c index 711ca4b1f051..d2ed23704189 100644 --- a/net/tipc/eth_media.c +++ b/net/tipc/eth_media.c @@ -38,6 +38,7 @@ #include #include #include +#include #define MAX_ETH_BEARERS 2 #define ETH_LINK_PRIORITY TIPC_DEF_LINK_PRI @@ -100,6 +101,11 @@ static int recv_msg(struct sk_buff *buf, struct net_device *dev, struct eth_bearer *eb_ptr = (struct eth_bearer *)pt->af_packet_priv; u32 size; + if (dev->nd_net != &init_net) { + kfree_skb(buf); + return 0; + } + if (likely(eb_ptr->bearer)) { if (likely(buf->pkt_type <= PACKET_BROADCAST)) { size = msg_size((struct tipc_msg *)buf->data); -- cgit v1.2.1