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| author | Tobias Klauser <tklauser@distanz.ch> | 2016-12-16 16:27:43 +0100 |
|---|---|---|
| committer | Tobias Klauser <tklauser@distanz.ch> | 2016-12-19 13:04:09 +0100 |
| commit | 4e28e05aac78dca759c4b2b374ec99306f7ae8ae (patch) | |
| tree | d13b7d82d6263784654faeaf60882e68460d5797 /include | |
| parent | 93d8be41c619ea6d4b29a1cefd15b60d2d82e764 (diff) | |
net: packet: Introduce PACKET_XMIT_RECEIVE socket optionpacket-loop-back
The PACKET_XMIT_RECEIVE socket options allows to immediately pump
packets sent through PF_PACKET back into the network stack via
dev_forward_skb() instead of submitting them to the device driver using
dev_queue_xmit(). This feature might be useful to load the network
stack with a lot of packets, similar to pktgen. Enable the
setting using:
int one = 1;
setsockopt(fd, SOL_PACKET, PACKET_XMIT_RECEIVE, &one, sizeof(one));
By default, PACKET_XMIT_RECEIVE is disabled and needs to be explicitly
enabled on PF_PACKET sockets.
Joint work with Daniel Borkmann.
Suggested-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'include')