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net: Pass optional SKB and SK arguments to dst_ops->{update_pmtu,redirect}()

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This will be used so that we can compose a full flow key.

Even though we have a route in this context, we need more.  In the
future the routes will be without destination address, source address,
etc. keying.  One ipv4 route will cover entire subnets, etc.

In this environment we have to have a way to possess persistent storage
for redirects and PMTU information.  This persistent storage will exist
in the FIB tables, and that's why we'll need to be able to rebuild a
full lookup flow key here.  Using that flow key will do a fib_lookup()
and create/update the persistent entry.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-07-17 03:29:28 -07:00
parent 02f3d4ce9e
commit 6700c2709c
21 changed files with 71 additions and 49 deletions
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2
net/ipv6/tcp_ipv6.c
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@ -367,7 +367,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
struct dst_entry *dst = __sk_dst_check(sk, np->dst_cookie);
if (dst)
dst->ops->redirect(dst,skb);
dst->ops->redirect(dst, sk, skb);
}
if (type == ICMPV6_PKT_TOOBIG) {