socket: need to malloc hdr
include/iscsi-private: changing iscsi_in_pdu hdr to char*
instead of static array for more convinient iser
pdu creation.
To use iscsi_in_pdu in iSER without making a copy of it
we need to change hdr to pointer from static array,
Because of that, iscsi_tcp flow need to do szmalloc (small zero malloc)
hdr when creating new iscsi_in_pdu. iscsi_in_pdu is being malloced
once per each received pdu. This change is reducing iscsi_in_pdu struct
size but adding extra allocation of the same size we reduced
from the struct.
Signed-off-by: Roy Shterman <roysh@mellanox.com>
bc64420bad