Add crc32c to struct spdk_iscsi_pdu and initialize it by SPDK_CRC32C_INITIAL,
and then use it as the initial value of _iscsi_pdu_calc_data_digest().
Separate finalization of crc32c into _iscsi_pdu_finalize_data_digest().
Move the definition of related macro constants from iscsi.c to iscsi.h.
iscsi_pdu_calc_data_digest() is used for read too. So setting
pdu->valid_data_bytes before calling iscsi_pdu_calc_data_digest()
for read.
Data split will be supported only if DIF is disabled, and hence
DIF case is not changed.
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I9d24f605fd0d452782e17695b613cd2f63d2e42f
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6421
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
3de09f8ece