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Commit 9c150e82 authored by David S. Miller's avatar David S. Miller
Browse files

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: default avatarDavid S. Miller <davem@davemloft.net>
parent a4daad6b

include/net/ip_fib.h

+1 −1
Original line number Diff line number Diff line
@@ -77,7 +77,7 @@ struct fib_info { 
	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]

net/ipv4/fib_semantics.c

+4 −0
Original line number Diff line number Diff line
@@ -152,6 +152,7 @@ static void free_fib_info_rcu(struct rcu_head *head) 
{

	struct fib_info *fi = container_of(head, struct fib_info, rcu);



	kfree(fi->fib_metrics);

	kfree(fi);

}
@@ -742,6 +743,9 @@ struct fib_info *fib_create_info(struct fib_config *cfg) 
	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);