@@ -10,6 +10,7 @@ struct tcf_mirred {
int tcfm_ok_push;
struct net_device *tcfm_dev;
struct list_head tcfm_list;
+ struct tc_action *tcfm_act;
};
#define to_mirred(pc) \
container_of(pc, struct tcf_mirred, common)
@@ -128,6 +128,7 @@ static int tcf_mirred_init(struct net *net, struct nlattr *nla,
dev_hold(dev);
m->tcfm_dev = dev;
m->tcfm_ok_push = ok_push;
+ m->tcfm_act = a;
}
spin_unlock_bh(&m->tcf_lock);
if (ret == ACT_P_CREATED) {
@@ -161,10 +162,6 @@ static int tcf_mirred(struct sk_buff *skb, const struct tc_action *a,
bstats_update(&m->tcf_bstats, skb);
dev = m->tcfm_dev;
- if (!dev) {
- printk_once(KERN_NOTICE "tc mirred: target device is gone\n");
- goto out;
- }
if (!(dev->flags & IFF_UP)) {
net_notice_ratelimited("tc mirred to Houston: device %s is down\n",
@@ -236,15 +233,27 @@ static int mirred_device_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
- struct tcf_mirred *m;
+ struct tcf_mirred *m, *tmp;
- if (event == NETDEV_UNREGISTER)
- list_for_each_entry(m, &mirred_list, tcfm_list) {
+ if (event == NETDEV_UNREGISTER) {
+ list_for_each_entry_safe(m, tmp, &mirred_list, tcfm_list) {
if (m->tcfm_dev == dev) {
- dev_put(dev);
- m->tcfm_dev = NULL;
+ struct tcf_common *p = NULL;
+ u32 index = m->common.tcfc_index;
+
+ list_del(&m->tcfm_act->list);
+ while ((p = tcf_hash_lookup(index, &mirred_hash_info)) != NULL) {
+ list_del_init(&m->tcfm_list);
+ if (m->tcfm_dev) {
+ dev_put(m->tcfm_dev);
+ m->tcfm_dev = NULL;
+ }
+ tcf_hash_destroy(p, &mirred_hash_info);
+ }
+ kfree(m->tcfm_act);
}
}
+ }
return NOTIFY_DONE;
}
When the target device is removed, the mirred action is still there but with the dev pointer setting to NULL. This makes the output from 'tc filter' ugly. There is no reason to keep it. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> --- include/net/tc_act/tc_mirred.h | 1 + net/sched/act_mirred.c | 27 ++++++++++++++++++--------- 2 files changed, 19 insertions(+), 9 deletions(-)