From 5228ddc98fa49b3cedab4024e269d62410a0d806 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Thu, 3 Jul 2008 03:46:16 -0700 Subject: tun: TUNSETFEATURES to set gso features. ethtool is useful for setting (some) device fields, but it's root-only. Finer feature control is available through a tun-specific ioctl. (Includes Mark McLoughlin 's fix to hold rtnl sem). Signed-off-by: Rusty Russell Acked-by: Max Krasnyansky Signed-off-by: David S. Miller --- include/linux/if_tun.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include') diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h index 94f76a112303..3f0a0995d449 100644 --- a/include/linux/if_tun.h +++ b/include/linux/if_tun.h @@ -41,6 +41,7 @@ #define TUNSETLINK _IOW('T', 205, int) #define TUNSETGROUP _IOW('T', 206, int) #define TUNGETFEATURES _IOR('T', 207, unsigned int) +#define TUNSETOFFLOAD _IOW('T', 208, unsigned int) /* TUNSETIFF ifr flags */ #define IFF_TUN 0x0001 @@ -48,6 +49,12 @@ #define IFF_NO_PI 0x1000 #define IFF_ONE_QUEUE 0x2000 +/* Features for GSO (TUNSETOFFLOAD). */ +#define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */ +#define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */ +#define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */ +#define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */ + struct tun_pi { unsigned short flags; __be16 proto; -- cgit v1.2.3