SUB48             587 net/dccp/ccids/ccid2.c 			u64 ackno_end_rl = SUB48(ackno, rl);
SUB48             638 net/dccp/ccids/ccid2.c 			ackno = SUB48(ackno_end_rl, 1);
SUB48             131 net/dccp/dccp.h 	u64 delta = SUB48(seqno2, seqno1);