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authorNicolas Dichtel <nicolas.dichtel@6wind.com>2013-11-14 13:51:05 +0100
committerDavid S. Miller <davem@davemloft.net>2013-11-14 16:59:16 -0500
commit929c9cf310565a97ec9bc685abbfeaed5fceb557 (patch)
tree147f8d155639aa11d87c0cfa7b6f2f5cd65e1be3 /net/ipv6
parentf9a23c84486ed350cce7bb1b2828abd1f6658796 (diff)
downloadlwn-929c9cf310565a97ec9bc685abbfeaed5fceb557.tar.gz
lwn-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>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/addrconf.c11
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);
}