The follows48 relation identifies whether 48-bit sequence number
x is the direct successor of y. Currently, it does not handle cases
of the following type correctly:

        follows48(0x(prefix)10000LL, 0x(prefix)0FFFFLL)

where prefix is an arbitrary hex sequence of up to 7 digits.

This is fixed by reusing the new dccp_delta_seqno function.

Signed-off-by: Gerrit Renker <[EMAIL PROTECTED]>
Acked-by: Ian McDonald <[EMAIL PROTECTED]>
Signed-off-by: Arnaldo Carvalho de Melo <[EMAIL PROTECTED]>
---
 net/dccp/dccp.h |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index 287a040..2c5be61 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -144,9 +144,7 @@ static inline u64 max48(const u64 seq1, const u64 seq2)
 /* is seq1 next seqno after seq2 */
 static inline int follows48(const u64 seq1, const u64 seq2)
 {
-       int diff = (seq1 & 0xFFFF) - (seq2 & 0xFFFF);
-
-       return diff==1;
+       return dccp_delta_seqno(seq2, seq1) == 1;
 }
 
 enum {
-- 
1.5.0.3

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