net: sockets -- More detailed debug info on sockets read

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
net: sockets -- Use CPT_NULL predefined constant

MAX_SCHEDULE_TIMEOUT is wrong here, openvz kernel uses CPT_NULL.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
net: sockets -- Init sock_struct early

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>