linux-toradex.git/include/linux/if_packet.h, branch T20_LinuxImageV2.0Beta1_20121218

packet: Add 'cpu' fanout policy.

2011-07-06T08:56:38+00:00

Unfortunately we have to use a real modulus here as
the multiply trick won't work as effectively with cpu
numbers as it does with rxhash values.

Signed-off-by: David S. Miller

packet: Add pre-defragmentation support for ipv4 fanouts.

2011-07-06T05:34:52+00:00

The skb->rxhash cannot be properly computed if the
packet is a fragment.  To alleviate this, allow the
AF_PACKET client to ask for defragmentation to be
done at demux time.

Signed-off-by: David S. Miller

packet: Add fanout support.

2011-07-06T05:34:52+00:00

Fanouts allow packet capturing to be demuxed to a set of AF_PACKET
sockets.  Two fanout policies are implemented:

1) Hashing based upon skb->rxhash

2) Pure round-robin

An AF_PACKET socket must be fully bound before it tries to add itself
to a fanout.  All AF_PACKET sockets trying to join the same fanout
must all have the same bind settings.

Fanouts are identified (within a network namespace) by a 16-bit ID.
The first socket to try to add itself to a fanout with a particular
ID, creates that fanout.  When the last socket leaves the fanout
(which happens only when the socket is closed), that fanout is
destroyed.

Signed-off-by: David S. Miller

af_packet: prevent information leak

2011-06-07T05:42:06+00:00

In 2.6.27, commit 393e52e33c6c2 (packet: deliver VLAN TCI to userspace)
added a small information leak.

Add padding field and make sure its zeroed before copy to user.

Signed-off-by: Eric Dumazet 
CC: Patrick McHardy 
Signed-off-by: David S. Miller

af-packet: Add flag to distinguish VID 0 from no-vlan.

2011-06-02T04:18:03+00:00

Currently, user-space cannot determine if a 0 tcp_vlan_tci
means there is no VLAN tag or the VLAN ID was zero.

Add flag to make this explicit.  User-space can check for
TP_STATUS_VLAN_VALID || tp_vlan_tci > 0, which will be backwards
compatible. Older could would have just checked for tp_vlan_tci,
so it will work no worse than before.

Signed-off-by: Ben Greear 
Acked-by: Eric Dumazet 
Signed-off-by: David S. Miller

packet_mmap: expose hw packet timestamps to network packet capture utilities

2010-06-02T12:53:56+00:00

This patch adds a setting, PACKET_TIMESTAMP, to specify the packet
timestamp source that is exported to capture utilities like tcpdump by
packet_mmap.

PACKET_TIMESTAMP accepts the same integer bit field as
SO_TIMESTAMPING.  However, only the SOF_TIMESTAMPING_SYS_HARDWARE and
SOF_TIMESTAMPING_RAW_HARDWARE values are currently recognized by
PACKET_TIMESTAMP.  SOF_TIMESTAMPING_SYS_HARDWARE takes precedence over
SOF_TIMESTAMPING_RAW_HARDWARE if both bits are set.

If PACKET_TIMESTAMP is not set, a software timestamp generated inside
the networking stack is used (the behavior before this setting was
added).

Signed-off-by: Scott McMillan 
Signed-off-by: David S. Miller

packet: support for TX time stamps on RAW sockets

2010-04-13T08:30:48+00:00

Enable the SO_TIMESTAMPING socket infrastructure for raw packet sockets.
We introduce PACKET_TX_TIMESTAMP for the control message cmsg_type.

Similar support for UDP and CAN sockets was added in commit
51f31cabe3ce5345b51e4a4f82138b38c4d5dc91

Signed-off-by: Richard Cochran 
Signed-off-by: David S. Miller

packet: Add GSO/csum offload support.

2010-02-05T04:24:10+00:00

This patch adds GSO/checksum offload to af_packet sockets using
virtio_net_hdr. Based on Rusty's patch to add this support to tun.
It allows GSO/checksum offload to be enabled when using raw socket
backend with virtio_net.
Adds PACKET_VNET_HDR socket option to prepend virtio_net_hdr in the
receive path and process/skip virtio_net_hdr in the send path. This
option is only allowed with SOCK_RAW sockets attached to ethernet
type devices.

v2 updates
----------
Michael's Comments
- Perform length check in packet_snd() when GSO is off even when
  vnet_hdr is present.
- Check for SKB_GSO_FCOE type and return -EINVAL
- don't allow tx/rx ring when vnet_hdr is enabled.
Herbert's Comments
- Removed ethernet specific code.
- protocol value is assumed to be passed in by the caller.

Signed-off-by: Sridhar Samudrala 
Signed-off-by: David S. Miller

net: cleanup include/linux

2009-11-04T17:50:58+00:00

This cleanup patch puts struct/union/enum opening braces,
in first line to ease grep games.

struct something
{

becomes :

struct something {

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

Revert "af_packet: add interframe drop cmsg (v6)"

2009-10-12T10:00:31+00:00

This reverts commit 977750076d98c7ff6cbda51858bb5a5894a9d9ab.

Neil is reimplementing this generically, outside of AF_PACKET.

Signed-off-by: David S. Miller