NET_XMIT_CN        95 include/linux/netdevice.h #define net_xmit_eval(e)	((e) == NET_XMIT_CN ? 0 : (e))
NET_XMIT_CN        96 include/linux/netdevice.h #define net_xmit_errno(e)	((e) != NET_XMIT_CN ? -ENOBUFS : 0)