linux-toradex.git/include/linux/virtio_net.h, branch v2.6.27.50

virtio: clarify that ABI is usable by any implementations

2008-07-25T02:06:04+00:00

We want others to implement and use virtio, so it makes sense to BSD
license the non-__KERNEL__ parts of the headers to make this crystal
clear.

Signed-off-by: Rusty Russell 
Acked-by: Christian Borntraeger 
Acked-by: Mark McLoughlin 
Acked-by: Ryan Harper 
Acked-by: Eric Van Hensbergen 
Acked-by: Anthony Liguori

virtio: Fix typo in virtio_net_hdr comments

2008-06-10T22:20:30+00:00

Signed-off-by: Mark McLoughlin 
Signed-off-by: Rusty Russell 
Signed-off-by: Jeff Garzik

virtio: finer-grained features for virtio_net

2008-05-02T11:50:47+00:00

So, we previously had a 'VIRTIO_NET_F_GSO' bit which meant that 'the
host can handle csum offload, and any TSO (v4&v6 incl ECN) or UFO
packets you might want to send.  I thought this was good enough for
Linux, but it actually isn't, since we don't do UFO in software.

So, add separate feature bits for what the host can handle.  Add
equivalent ones for the guest to say what it can handle, because LRO
is coming too (thanks Herbert!).

Signed-off-by: Rusty Russell

virtio: Tweak virtio_net defines

2008-02-04T12:50:02+00:00

1) Turn GSO on virtio net into an all-or-nothing (keep checksumming
   separate).  Having multiple bits is a pain: if you can't support something
   you should handle it in software, which is still a performance win.

2) Make VIRTIO_NET_HDR_GSO_ECN a flag in the header, so it can apply to
   IPv6 or v4.

3) Rename VIRTIO_NET_F_NO_CSUM to VIRTIO_NET_F_CSUM (ie. means we do
   checksumming).

4) Add csum and gso params to virtio_net to allow more testing.

Signed-off-by: Rusty Russell

virtio: Net header needs hdr_len

2008-02-04T12:50:02+00:00

It's far easier to deal with packets if we don't have to parse the
packet to figure out the header length to know how much to pull into
the skb data.  Add the field to the virtio_net_hdr struct (and fix the
spaces that somehow crept in there).

Signed-off-by: Rusty Russell

virtio: simplify config mechanism.

2008-02-04T12:49:57+00:00

Previously we used a type/len pair within the config space, but this
seems overkill.  We now simply define a structure which represents the
layout in the config space: the config space can now only be extended
at the end.

The main driver-visible changes:
1) We indicate what fields are present with an explicit feature bit.
2) Virtqueues are explicitly numbered, and not in the config space.

Signed-off-by: Rusty Russell

Net driver using virtio

2007-10-23T05:49:54+00:00

The network driver uses two virtqueues: one for input packets and one
for output packets.  This has nice locking properties (ie. we don't do
any for recv vs send).

TODO:
	1) Big packets.
	2) Multi-client devices (maybe separate driver?).
	3) Resolve freeing of old xmit skbs (Christian Borntraeger)

Signed-off-by: Rusty Russell 
Cc: Christian Borntraeger 
Cc: Herbert Xu 
Cc: netdev@vger.kernel.org