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| author | Mark McLoughlin <markmc@redhat.com> | 2009-10-22 17:43:35 +0100 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2009-10-27 12:29:00 -0500 |
| commit | 8e0f8e5bf8fd483dd28329055336cf895b74c89f (patch) | |
| tree | ffe6c1da95d86b0a9c1cedbb0c29dd5f39c3500b /tap-linux.h | |
| parent | 38c75be3139a117b02350dbda9d48d47aa57fa3d (diff) | |
| download | qemu-8e0f8e5bf8fd483dd28329055336cf895b74c89f.tar.gz | |
net: enable IFF_VNET_HDR on tap fds if available
For now, we just add an empty header before writing and strip the header
after reading.
We really only want IFF_VNET_HDR when virtio_net is using it, but it
would significantly complicate matters to try and do that. There should
be little or no performance impact with always adding headers.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'tap-linux.h')
| -rw-r--r-- | tap-linux.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tap-linux.h b/tap-linux.h index cd07ea8efb..8e7534829e 100644 --- a/tap-linux.h +++ b/tap-linux.h @@ -16,14 +16,28 @@ #ifndef QEMU_TAP_H #define QEMU_TAP_H +#include <stdint.h> #include <linux/ioctl.h> /* Ioctl defines */ #define TUNSETIFF _IOW('T', 202, int) +#define TUNGETFEATURES _IOR('T', 207, unsigned int) +#define TUNGETIFF _IOR('T', 210, unsigned int) #define TUNSETSNDBUF _IOW('T', 212, int) /* TUNSETIFF ifr flags */ #define IFF_TAP 0x0002 #define IFF_NO_PI 0x1000 +#define IFF_VNET_HDR 0x4000 + +struct virtio_net_hdr +{ + uint8_t flags; + uint8_t gso_type; + uint16_t hdr_len; + uint16_t gso_size; + uint16_t csum_start; + uint16_t csum_offset; +}; #endif /* QEMU_TAP_H */ |