MCTP_HDR_TAG_MASK
(MCTP_HDR_TAG_MASK | MCTP_HDR_FLAG_TO);
BUILD_BUG_ON(MCTP_TAG_MASK != MCTP_HDR_TAG_MASK);
(MCTP_HDR_TAG_MASK | MCTP_HDR_FLAG_TO);
tag = mh->flags_seq_tag & (MCTP_HDR_TAG_MASK | MCTP_HDR_FLAG_TO);
tag = mh->flags_seq_tag & (MCTP_HDR_TAG_MASK | MCTP_HDR_FLAG_TO);
#define FL_T(t) ((t) & MCTP_HDR_TAG_MASK)
tag_mask = MCTP_HDR_TAG_MASK | MCTP_HDR_FLAG_TO;