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ipv6: decrease hop limit counter in ip6_forward()

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Decrease hop limit counter when deliver skb to ndp proxy.

Signed-off-by: Kangmin Park <l4stpr0gr4m@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kangmin Park 2021-07-23 02:44:43 +09:00 committed by David S. Miller
parent 227adfb2b1
commit 46c7655f0b
1 changed files with 3 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
net/ipv6/ip6_output.c
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@ -549,9 +549,10 @@ int ip6_forward(struct sk_buff *skb)
if (net->ipv6.devconf_all->proxy_ndp && if (net->ipv6.devconf_all->proxy_ndp &&
pneigh_lookup(&nd_tbl, net, &hdr->daddr, skb->dev, 0)) { pneigh_lookup(&nd_tbl, net, &hdr->daddr, skb->dev, 0)) {
int proxied = ip6_forward_proxy_check(skb); int proxied = ip6_forward_proxy_check(skb);
if (proxied > 0) if (proxied > 0) {
hdr->hop_limit--;
return ip6_input(skb); return ip6_input(skb);
else if (proxied < 0) { } else if (proxied < 0) {
__IP6_INC_STATS(net, idev, IPSTATS_MIB_INDISCARDS); __IP6_INC_STATS(net, idev, IPSTATS_MIB_INDISCARDS);
goto drop; goto drop;
} }