/* ---------------------------------------------------------------------- Copyright (C) 2000 Cesar Miquel (miquel@df.uba.ar) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ---------------------------------------------------------------------- */ #define RIO_SEND_COMMAND 0x1 #define RIO_RECV_COMMAND 0x2 #define RIO_DIR_OUT 0x0 #define RIO_DIR_IN 0x1 struct RioCommand { short length; int request; int requesttype; int value; int index; void __user *buffer; int timeout; }; -rx-pump-back net-next plumbingsTobias Klauser
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authorTobias Klauser <tklauser@distanz.ch>2016-12-16 16:27:43 +0100
committerTobias Klauser <tklauser@distanz.ch>2016-12-19 13:04:09 +0100
commit4e28e05aac78dca759c4b2b374ec99306f7ae8ae (patch)
treed13b7d82d6263784654faeaf60882e68460d5797
parent93d8be41c619ea6d4b29a1cefd15b60d2d82e764 (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>
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