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netfilter: flow table support for IPv6

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This patch adds the IPv6 flow table type, that implements the datapath
flow table to forward IPv6 traffic.

This patch exports ip6_dst_mtu_forward() that is required to check for
mtu to pass up packets that need PMTUD handling to the classic
forwarding path.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso
2018-01-07 01:04:19 +01:00
parent 97add9f0d6
commit 0995210753
5 changed files with 292 additions and 1 deletions
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3
net/ipv6/ip6_output.c
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@@ -378,7 +378,7 @@ static inline int ip6_forward_finish(struct net *net, struct sock *sk,
return dst_output(net, sk, skb);
}
static unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst)
unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst)
{
unsigned int mtu;
struct inet6_dev *idev;
@@ -398,6 +398,7 @@ static unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst)
return mtu;
}
EXPORT_SYMBOL_GPL(ip6_dst_mtu_forward);
static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu)
{