Gao Feng 20861f26e3 driver: tun: Use new macro SOCK_IOC_TYPE instead of literal number 0x89 ...

The current codes use _IOC_TYPE(cmd) == 0x89 to check if the cmd is one
socket ioctl command like SIOCGIFHWADDR. But the literal number 0x89 may
confuse readers. So create one macro SOCK_IOC_TYPE to enhance the readability.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2016-10-31 10:56:47 -04:00

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