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Message-ID: <4AD1E169.6090705@linux-ipv6.org> Date: Sun, 11 Oct 2009 22:45:13 +0900 From: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org> To: davem@...emloft.net CC: netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org Subject: [RESEND PATCH net-next-2.6 3/3] ipv6 sit: Set relay to 0.0.0.0 directly if relay_prefixlen == 0. ipv6 sit: Set relay to 0.0.0.0 directly if relay_prefixlen == 0. Do not use bit-shift if relay_prefixlen == 0; relay_prefix << 32 does not result in 0. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org> --- net/ipv6/sit.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 193d0c6..510d31f 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -1014,9 +1014,12 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) ip6rd.prefixlen); if (!ipv6_addr_equal(&prefix, &ip6rd.prefix)) goto done; - relay_prefix = ip6rd.relay_prefix & - htonl(0xffffffffUL << - (32 - ip6rd.relay_prefixlen)); + if (ip6rd.relay_prefixlen) + relay_prefix = ip6rd.relay_prefix & + htonl(0xffffffffUL << + (32 - ip6rd.relay_prefixlen)); + else + relay_prefix = 0; if (relay_prefix != ip6rd.relay_prefix) goto done; -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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