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>
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@ -982,7 +982,7 @@ static int tcp_metrics_flush_all(struct net *net)
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static int tcp_metrics_nl_cmd_del(struct sk_buff *skb, struct genl_info *info)
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{
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struct tcpm_hash_bucket *hb;
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struct tcp_metrics_block *tm;
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struct tcp_metrics_block *tm, *tmlist = NULL;
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struct tcp_metrics_block __rcu **pp;
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struct inetpeer_addr daddr;
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unsigned int hash;
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@ -999,17 +999,22 @@ static int tcp_metrics_nl_cmd_del(struct sk_buff *skb, struct genl_info *info)
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hb = net->ipv4.tcp_metrics_hash + hash;
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pp = &hb->chain;
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spin_lock_bh(&tcp_metrics_lock);
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for (tm = deref_locked_genl(*pp); tm;
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pp = &tm->tcpm_next, tm = deref_locked_genl(*pp)) {
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for (tm = deref_locked_genl(*pp); tm; tm = deref_locked_genl(*pp)) {
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if (addr_same(&tm->tcpm_daddr, &daddr)) {
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*pp = tm->tcpm_next;
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break;
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tm->tcpm_next = tmlist;
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tmlist = tm;
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} else {
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pp = &tm->tcpm_next;
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}
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}
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spin_unlock_bh(&tcp_metrics_lock);
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if (!tm)
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if (!tmlist)
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return -ESRCH;
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kfree_rcu(tm, rcu_head);
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for (tm = tmlist; tm; tm = tmlist) {
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tmlist = tm->tcpm_next;
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kfree_rcu(tm, rcu_head);
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}
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return 0;
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}
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