Commit 0aec51c8 authored by Gerrit Renker's avatar Gerrit Renker Committed by David S. Miller

[DCCP]: Make dccp_delta_seqno return signed numbers

Problem:
parent 6b811d43
...@@ -113,9 +113,12 @@ static inline void dccp_inc_seqno(u64 *seqno) ...@@ -113,9 +113,12 @@ static inline void dccp_inc_seqno(u64 *seqno)
*seqno = ADD48(*seqno, 1); *seqno = ADD48(*seqno, 1);
} }
static inline u64 dccp_delta_seqno(u64 seqno1, u64 seqno2) /* signed mod-2^48 distance: pos. if seqno1 < seqno2, neg. if seqno1 > seqno2 */
static inline s64 dccp_delta_seqno(const u64 seqno1, const u64 seqno2)
{ {
return ((seqno2 << 16) - (seqno1 << 16)) >> 16; u64 delta = SUB48(seqno2, seqno1);
return TO_SIGNED48(delta);
} }
/* is seq1 < seq2 ? */ /* is seq1 < seq2 ? */
......
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