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(parent: 93a205e) | patch
driver: tun: Move tun check into the block of TUNSETIFF condition check
authorGao Feng <fgao@ikuai8.com>
Tue, 25 Oct 2016 14:26:09 +0000 (22:26 +0800)
committerDavid S. Miller <davem@davemloft.net>
Sat, 29 Oct 2016 18:51:42 +0000 (14:51 -0400)
commit0f16bc1355bab719958577b2e519a8cef1637b28
tree5d78ddca868f0146e7ae379221afede07958eaa1tree | snapshot (tar.gz zip)
parent93a205ee98a4881e8bf608e65562c19d45930a93commit | diff
driver: tun: Move tun check into the block of TUNSETIFF condition check

When cmd is TUNSETIFF and tun is not null, the original codes go ahead,
then reach the default case of switch(cmd) and set the ret is -EINVAL.
It is not clear for readers.

Now move the tun check into the block of TUNSETIFF condition check, and
return -EEXIST instead of -EINVAL when the tfile already owns one tun.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/tun.c diff | blob | blame | history