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| author | Jeff Garzik <jgarzik@pobox.com> | 2006-01-17 18:29:06 +0300 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2006-01-17 18:29:06 +0300 |
| commit | ea9b395fe20ac74be788f415af2622ac8f0c35c7 (patch) | |
| tree | d1653e1a4cbe360aa7132ea4e29ab92a02038224 /net/sunrpc/svcauth_unix.c | |
| parent | 61420e147a706ee7c7a902008045547fb2a2a330 (diff) | |
| parent | 1bc4ccfff8675adc3d96f91245eb7e2dc0043ca9 (diff) | |
| download | linux-ea9b395fe20ac74be788f415af2622ac8f0c35c7.tar.xz | |
Merge branch 'upstream'
Diffstat (limited to 'net/sunrpc/svcauth_unix.c')
| -rw-r--r-- | net/sunrpc/svcauth_unix.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index cac2e774dd81..3e6c694bbad1 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -101,10 +101,22 @@ static void ip_map_put(struct cache_head *item, struct cache_detail *cd) } } +#if IP_HASHBITS == 8 +/* hash_long on a 64 bit machine is currently REALLY BAD for + * IP addresses in reverse-endian (i.e. on a little-endian machine). + * So use a trivial but reliable hash instead + */ +static inline int hash_ip(unsigned long ip) +{ + int hash = ip ^ (ip>>16); + return (hash ^ (hash>>8)) & 0xff; +} +#endif + static inline int ip_map_hash(struct ip_map *item) { return hash_str(item->m_class, IP_HASHBITS) ^ - hash_long((unsigned long)item->m_addr.s_addr, IP_HASHBITS); + hash_ip((unsigned long)item->m_addr.s_addr); } static inline int ip_map_match(struct ip_map *item, struct ip_map *tmp) { |