ipv4: Allocate fib metrics dynamically.
This is the initial gateway towards super-sharing metrics
if they are all set to zero for a route.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 65d1fcd..2c0508a 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -77,7 +77,7 @@
int fib_protocol;
__be32 fib_prefsrc;
u32 fib_priority;
- u32 fib_metrics[RTAX_MAX];
+ u32 *fib_metrics;
#define fib_mtu fib_metrics[RTAX_MTU-1]
#define fib_window fib_metrics[RTAX_WINDOW-1]
#define fib_rtt fib_metrics[RTAX_RTT-1]
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 9aff11d7..363ec3922 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -152,6 +152,7 @@
{
struct fib_info *fi = container_of(head, struct fib_info, rcu);
+ kfree(fi->fib_metrics);
kfree(fi);
}
@@ -742,6 +743,9 @@
fi = kzalloc(sizeof(*fi)+nhs*sizeof(struct fib_nh), GFP_KERNEL);
if (fi == NULL)
goto failure;
+ fi->fib_metrics = kzalloc(sizeof(u32) * RTAX_MAX, GFP_KERNEL);
+ if (!fi->fib_metrics)
+ goto failure;
fib_info_cnt++;
fi->fib_net = hold_net(net);