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[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>
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@ -17,6 +17,7 @@
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#include <linux/netfilter_bridge.h>
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#include <linux/etherdevice.h>
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#include <linux/llc.h>
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#include <net/net_namespace.h>
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#include <net/llc.h>
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#include <net/llc_pdu.h>
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#include <asm/unaligned.h>
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@ -141,6 +142,9 @@ int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
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struct net_bridge *br;
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const unsigned char *buf;
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if (dev->nd_net != &init_net)
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goto err;
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if (!p)
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goto err;
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