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[TUNTAP]: Allow setting the linktype of the tap device from userspace

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Currently tun/tap only supports the EN10MB ARP type.  For use with
wireless and other networking types it should be possible to set the
ARP type via an ioctl.

Patch v2: Included check that the tap interface is down before changing the
link type out from underneath it

Signed-off-by: Mike Kershaw <dragorn@kismetwireless.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mike Kershaw 2005-09-01 17:40:05 -07:00 • committed by David S. Miller
parent 80ac2912f8
commit ff4cc3ac93
2 changed files with 16 additions and 0 deletions
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1
include/linux/if_tun.h
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@ -77,6 +77,7 @@ struct tun_struct {
#define TUNSETIFF _IOW('T', 202, int)
#define TUNSETPERSIST _IOW('T', 203, int)
#define TUNSETOWNER _IOW('T', 204, int)
#define TUNSETLINK _IOW('T', 205, int)
/* TUNSETIFF ifr flags */
#define IFF_TUN 0x0001