since it is impossible to track producer and consumer
correctly if TCP/IP stack pass IOB directly to netdev
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Implement si_send/sendto/recvfrom with si_sendmsg/recvmsg, instead of
the other way round.
Change-Id: I7b858556996e0862df22807a6edf6d7cfe6518fc
Signed-off-by: Peter Bee <bijunda1@xiaomi.com>