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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-06 09:46:28 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-08 14:27:40 +0200
commitb36c97615b985fe910fc6ae20afd2fad3b82ce8d (patch)
treea1c9dbb23c2b701fece6d389536288638e5cf4f6
parentf4c360885236357b1aefa6c2be1aeef7c8daa6ab (diff)
Revert "ip6_vti: adjust vti mtu according to mtu of lower device"
This reverts commit 813b2dad2cb59d2759f1538e65d56dcccdb18a94 which is commit 53c81e95df1793933f87748d36070a721f6cb287 upstream. Ben writes that there are a number of follow-on patches needed to fix this up, but they get complex to backport, and some custom fixes are needed, so let's just revert this and wait for a "real" set of patches to resolve this to be submitted if it is really needed. Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Cc: Petr Vorel <pvorel@suse.cz> Cc: Alexey Kodanev <alexey.kodanev@oracle.com> Cc: David S. Miller <davem@davemloft.net> Cc: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--net/ipv6/ip6_vti.c20
1 files changed, 0 insertions, 20 deletions
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index fa3ae1cb50d3..8c184f84f353 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -626,7 +626,6 @@ static void vti6_link_config(struct ip6_tnl *t)
{
struct net_device *dev = t->dev;
struct __ip6_tnl_parm *p = &t->parms;
- struct net_device *tdev = NULL;
memcpy(dev->dev_addr, &p->laddr, sizeof(struct in6_addr));
memcpy(dev->broadcast, &p->raddr, sizeof(struct in6_addr));
@@ -639,25 +638,6 @@ static void vti6_link_config(struct ip6_tnl *t)
dev->flags |= IFF_POINTOPOINT;
else
dev->flags &= ~IFF_POINTOPOINT;
-
- if (p->flags & IP6_TNL_F_CAP_XMIT) {
- int strict = (ipv6_addr_type(&p->raddr) &
- (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL));
- struct rt6_info *rt = rt6_lookup(t->net,
- &p->raddr, &p->laddr,
- p->link, strict);
-
- if (rt)
- tdev = rt->dst.dev;
- ip6_rt_put(rt);
- }
-
- if (!tdev && p->link)
- tdev = __dev_get_by_index(t->net, p->link);
-
- if (tdev)
- dev->mtu = max_t(int, tdev->mtu - dev->hard_header_len,
- IPV6_MIN_MTU);
}
/**