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tcp: must free metrics at net dismantle

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We currently leak all tcp metrics at struct net dismantle time.

tcp_net_metrics_exit() frees the hash table, we must first
iterate it to free all metrics.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2012-08-09 11:19:13 +02:00 committed by David S. Miller
parent f5addb91d1
commit 36471012e2
1 changed files with 12 additions and 0 deletions
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12
net/ipv4/tcp_metrics.c
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@ -731,6 +731,18 @@ static int __net_init tcp_net_metrics_init(struct net *net)
static void __net_exit tcp_net_metrics_exit(struct net *net)
{
unsigned int i;
for (i = 0; i < (1U << net->ipv4.tcp_metrics_hash_log) ; i++) {
struct tcp_metrics_block *tm, *next;
tm = rcu_dereference_protected(net->ipv4.tcp_metrics_hash[i].chain, 1);
while (tm) {
next = rcu_dereference_protected(tm->tcpm_next, 1);
kfree(tm);
tm = next;
}
}
kfree(net->ipv4.tcp_metrics_hash);
}