The carry from the 64->32bits folding was dropped, e.g with: saddr=0xFFFFFFFF daddr=0xFF0000FF len=0xFFFF proto=0 sum=1
Signed-off-by: Karl Beldan <[email protected]> Cc: Mike Frysinger <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: [email protected] Cc: Stable <[email protected]> --- lib/checksum.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/checksum.c b/lib/checksum.c index 129775e..4b5adf2 100644 --- a/lib/checksum.c +++ b/lib/checksum.c @@ -195,8 +195,8 @@ __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, #else s += (proto + len) << 8; #endif - s += (s >> 32); - return (__force __wsum)s; + s += (s << 32) + (s >> 32); + return (__force __wsum)(s >> 32); } EXPORT_SYMBOL(csum_tcpudp_nofold); #endif -- 2.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
