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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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6
net/bridge/br_netfilter.c
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@@ -111,11 +111,13 @@ static inline __be16 pppoe_proto(const struct sk_buff *skb)
pppoe_proto(skb) == htons(PPP_IPV6) && \
brnf_filter_pppoe_tagged)
static void fake_update_pmtu(struct dst_entry *dst, u32 mtu)
static void fake_update_pmtu(struct dst_entry *dst, struct sock *sk,
struct sk_buff *skb, u32 mtu)
{
}
static void fake_redirect(struct dst_entry *dst, struct sk_buff *skb)
static void fake_redirect(struct dst_entry *dst, struct sock *sk,
struct sk_buff *skb)
{
}