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ipv6: Use rt6i_idev index for echo replies to a local address

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Tariq repored local pings to linklocal address is failing:
$ ifconfig ens8
ens8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 11.141.16.6  netmask 255.255.0.0  broadcast 11.141.255.255
        inet6 fe80::7efe:90ff:fecb:7502  prefixlen 64  scopeid 0x20<link>
        ether 7c:fe:90:cb:75:02  txqueuelen 1000  (Ethernet)
        RX packets 12  bytes 1164 (1.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 30  bytes 2484 (2.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

$  /bin/ping6 -c 3 fe80::7efe:90ff:fecb:7502%ens8
PING fe80::7efe:90ff:fecb:7502%ens8(fe80::7efe:90ff:fecb:7502) 56 data bytes

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2017-08-28 13:53:34 -07:00
committed by David S. Miller
parent f602b976b6
commit 1b70d792cf
2 changed files with 30 additions and 13 deletions
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10
include/net/ip6_route.h
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@@ -164,6 +164,16 @@ void rt6_mtu_change(struct net_device *dev, unsigned int mtu);
void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
void rt6_clean_tohost(struct net *net, struct in6_addr *gateway);
static inline const struct rt6_info *skb_rt6_info(const struct sk_buff *skb)
{
const struct dst_entry *dst = skb_dst(skb);
const struct rt6_info *rt6 = NULL;
if (dst)
rt6 = container_of(dst, struct rt6_info, dst);
return rt6;
}
/*
* Store a destination cache entry in a socket