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| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2013-11-14 13:51:05 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-14 16:59:16 -0500 |
| commit | 929c9cf310565a97ec9bc685abbfeaed5fceb557 (patch) | |
| tree | 147f8d155639aa11d87c0cfa7b6f2f5cd65e1be3 | |
| parent | f9a23c84486ed350cce7bb1b2828abd1f6658796 (diff) | |
| download | linux-929c9cf310565a97ec9bc685abbfeaed5fceb557.tar.gz linux-929c9cf310565a97ec9bc685abbfeaed5fceb557.tar.bz2 linux-929c9cf310565a97ec9bc685abbfeaed5fceb557.zip | |
sit: fix prefix length of ll and v4mapped addresses
When the local IPv4 endpoint is wilcard (0.0.0.0), the prefix length is
correctly set, ie 64 if the address is a link local one or 96 if the address is
a v4 mapped one.
But when the local endpoint is specified, the prefix length is set to 128 for
both kind of address. This patch fix this wrong prefix length.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/addrconf.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 542d09561ed6..27fedc3e4449 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2528,7 +2528,7 @@ static void sit_add_v4_addrs(struct inet6_dev *idev) struct in6_addr addr; struct net_device *dev; struct net *net = dev_net(idev->dev); - int scope; + int scope, plen; ASSERT_RTNL(); @@ -2538,12 +2538,14 @@ static void sit_add_v4_addrs(struct inet6_dev *idev) if (idev->dev->flags&IFF_POINTOPOINT) { addr.s6_addr32[0] = htonl(0xfe800000); scope = IFA_LINK; + plen = 64; } else { scope = IPV6_ADDR_COMPATv4; + plen = 96; } if (addr.s6_addr32[3]) { - add_addr(idev, &addr, 128, scope); + add_addr(idev, &addr, plen, scope); return; } @@ -2555,7 +2557,6 @@ static void sit_add_v4_addrs(struct inet6_dev *idev) int flag = scope; for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { - int plen; addr.s6_addr32[3] = ifa->ifa_local; @@ -2566,10 +2567,6 @@ static void sit_add_v4_addrs(struct inet6_dev *idev) continue; flag |= IFA_HOST; } - if (idev->dev->flags&IFF_POINTOPOINT) - plen = 64; - else - plen = 96; add_addr(idev, &addr, plen, flag); } |