MCTP_HDR_SEQ_MASK
seq = (seq + 1) & MCTP_HDR_SEQ_MASK;
& MCTP_HDR_SEQ_MASK;
exp_seq = (key->last_seq + 1) & MCTP_HDR_SEQ_MASK;
MCTP_HDR_SEQ_MASK;
KUNIT_EXPECT_EQ(test, seq2, seq & MCTP_HDR_SEQ_MASK);