redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

[DCCP]: Make dccp_delta_seqno return signed numbers

Browse source 
Problem:
This commit is contained in:
Gerrit Renker 2007-03-20 12:45:59 -03:00 committed by David S. Miller
parent 6b811d43f6
commit 0aec51c869
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
net/dccp/dccp.h
View file

@ -113,9 +113,12 @@ static inline void dccp_inc_seqno(u64 *seqno)
*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 ? */