[NETNS][IPV6] ip6_fib - add net to gc timer parameter

The fib tables are now relative to the network namespace. When the
garbage collector timer expires, we must have a network namespace
parameter in order to retrieve the tables. For now this is the
init_net, but we should be able to have a timer per namespace and use
the timer callback parameter to pass the network namespace from the
expired timer.

The timer callback, fib6_run_gc, is actually used to be called
synchronously by some functions and asynchronously when the timer
expires.

When the timer expires, the delay specified for fib6_run_gc parameter
is always zero. So, I changed fib6_run_gc to not be a timer callback
but a function called by the timer callback and I added a timer
callback where its work is just to retrieve from the data arg of the
timer the network namespace and call fib6_run_gc with zero expiring
time and the network namespace parameters. That makes the code cleaner
for the fib6_run_gc callers.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index e54075d902db..fae267f65341 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -209,7 +209,8 @@ extern int			fib6_del(struct rt6_info *rt,
 extern void                     inet6_rt_notify(int event, struct rt6_info *rt,
                                                 struct nl_info *info);
 
-extern void                     fib6_run_gc(unsigned long dummy);
+extern void                     fib6_run_gc(unsigned long expires,
+                                            struct net *net);
 
 extern void                     fib6_gc_cleanup(void);