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[AF_PACKET]: Add option to return orig_dev to userspace.

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Add a packet socket option to allow the orig_dev index to be returned
to userspace when passing traffic through a decapsulated device, such
as the bonding driver.

This is very useful for layer 2 traffic being able to report which
physical device actually received the traffic, instead of having the
encapsulating device hide that information.

The new option is called PACKET_ORIGDEV.

Signed-off-by: Peter P. Waskiewicz Jr. <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peter P. Waskiewicz Jr
2007-04-20 16:05:39 -07:00
committed by David S. Miller
parent 1370b5a59b
commit 80feaacb8a
2 changed files with 30 additions and 3 deletions
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include/linux/if_packet.h
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@@ -42,6 +42,7 @@ struct sockaddr_ll
#define PACKET_STATISTICS 6
#define PACKET_COPY_THRESH 7
#define PACKET_AUXDATA 8
#define PACKET_ORIGDEV 9
struct tpacket_stats
{