From: Jozsef Kadlecsik <kadlec@xxxxxxxxxxxxxxxxx>
Date: Tue, 27 Nov 2012 21:27:25 +0100
> The netfilter MASQUERADE target does not handle the case when the routing
> changes and the source address of existing connections become invalid.
> The problem can be solved if routing modifications create events to which
> the MASQUERADE target can subscribe and then delete the affected
> connections.
>
> The patch adds the required event support for IPv4/IPv6.
>
> Signed-off-by: Jozsef Kadlecsik <kadlec@xxxxxxxxxxxxxxxxx>
What part of the information are you actually interested in?
Because just saying that a route is added or removed using fib_info X
doesn't tell you a whole lot.
fib_info only encapsulates the information that can be shared heaving
with many ipv4 routes. It doesn't include the TOS or other aspects
stored in the fib_alias part. I can only guess that you did not
use fib_alias in order to avoid having to export that structure to
the callers, as it is currently private to net/ipv4/
The notifier doesn't seem to distinguish between adds or removes
either, making it less useful in another way.
I would suggest passing a super-structure that gives the event type:
struct route_changed_info {
enum {
add,
remove,
} event_type;
void *data;
};
or something like that.
Can you also show us exactly how this will be used? Otherwise we
have to guess.
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