tcp: metrics: Delete all entries matching a certain destination
As we now can have multiple entries per destination-IP, the "ip
tcp_metrics delete address ADDRESS" command deletes all of them.
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index 199659f..e150f26 100644
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -982,7 +982,7 @@
static int tcp_metrics_nl_cmd_del(struct sk_buff *skb, struct genl_info *info)
{
struct tcpm_hash_bucket *hb;
- struct tcp_metrics_block *tm;
+ struct tcp_metrics_block *tm, *tmlist = NULL;
struct tcp_metrics_block __rcu **pp;
struct inetpeer_addr daddr;
unsigned int hash;
@@ -999,17 +999,22 @@
hb = net->ipv4.tcp_metrics_hash + hash;
pp = &hb->chain;
spin_lock_bh(&tcp_metrics_lock);
- for (tm = deref_locked_genl(*pp); tm;
- pp = &tm->tcpm_next, tm = deref_locked_genl(*pp)) {
+ for (tm = deref_locked_genl(*pp); tm; tm = deref_locked_genl(*pp)) {
if (addr_same(&tm->tcpm_daddr, &daddr)) {
*pp = tm->tcpm_next;
- break;
+ tm->tcpm_next = tmlist;
+ tmlist = tm;
+ } else {
+ pp = &tm->tcpm_next;
}
}
spin_unlock_bh(&tcp_metrics_lock);
- if (!tm)
+ if (!tmlist)
return -ESRCH;
- kfree_rcu(tm, rcu_head);
+ for (tm = tmlist; tm; tm = tmlist) {
+ tmlist = tm->tcpm_next;
+ kfree_rcu(tm, rcu_head);
+ }
return 0;
}