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authorRusty Russell <rusty@rustcorp.com.au>2008-07-03 03:48:02 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-03 03:48:02 -0700
commitf43798c27684ab925adde7d8acc34c78c6e50df8 (patch)
tree21e952a07534dd382835246d02245d5e776c4d8b /include/linux/if_tun.h
parent5228ddc98fa49b3cedab4024e269d62410a0d806 (diff)
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op-kernel-dev-f43798c27684ab925adde7d8acc34c78c6e50df8.tar.gz
tun: Allow GSO using virtio_net_hdr
Add a IFF_VNET_HDR flag. This uses the same ABI as virtio_net (ie. prepending struct virtio_net_hdr to packets) to indicate GSO and checksum information. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Max Krasnyansky <maxk@qualcomm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/if_tun.h')
-rw-r--r--include/linux/if_tun.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h
index 3f0a099..563fae5 100644
--- a/include/linux/if_tun.h
+++ b/include/linux/if_tun.h
@@ -31,6 +31,7 @@
#define TUN_NO_PI 0x0040
#define TUN_ONE_QUEUE 0x0080
#define TUN_PERSIST 0x0100
+#define TUN_VNET_HDR 0x0200
/* Ioctl defines */
#define TUNSETNOCSUM _IOW('T', 200, int)
@@ -48,6 +49,7 @@
#define IFF_TAP 0x0002
#define IFF_NO_PI 0x1000
#define IFF_ONE_QUEUE 0x2000
+#define IFF_VNET_HDR 0x4000
/* Features for GSO (TUNSETOFFLOAD). */
#define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */
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