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-rw-r--r--net/sched/Makefile1
-rw-r--r--net/sched/act_api.c4
-rw-r--r--net/sched/act_bpf.c2
-rw-r--r--net/sched/act_connmark.c2
-rw-r--r--net/sched/act_csum.c2
-rw-r--r--net/sched/act_gact.c2
-rw-r--r--net/sched/act_ife.c2
-rw-r--r--net/sched/act_ipt.c4
-rw-r--r--net/sched/act_mirred.c2
-rw-r--r--net/sched/act_nat.c2
-rw-r--r--net/sched/act_pedit.c2
-rw-r--r--net/sched/act_police.c2
-rw-r--r--net/sched/act_sample.c4
-rw-r--r--net/sched/act_simple.c2
-rw-r--r--net/sched/act_skbedit.c2
-rw-r--r--net/sched/act_skbmod.c2
-rw-r--r--net/sched/act_tunnel_key.c2
-rw-r--r--net/sched/act_vlan.c2
-rw-r--r--net/sched/cls_api.c37
19 files changed, 31 insertions, 47 deletions
diff --git a/net/sched/Makefile b/net/sched/Makefile
index 7b915d226de7..9e43a4721ef8 100644
--- a/net/sched/Makefile
+++ b/net/sched/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux Traffic Control Unit.
#
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index da6fa82c98a8..ca2ff0b3123f 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -78,6 +78,7 @@ static void tcf_idr_remove(struct tcf_idrinfo *idrinfo, struct tc_action *p)
spin_lock_bh(&idrinfo->lock);
idr_remove_ext(&idrinfo->action_idr, p->tcfa_index);
spin_unlock_bh(&idrinfo->lock);
+ put_net(idrinfo->net);
gen_kill_estimator(&p->tcfa_rate_est);
free_tcf(p);
}
@@ -86,6 +87,8 @@ int __tcf_idr_release(struct tc_action *p, bool bind, bool strict)
{
int ret = 0;
+ ASSERT_RTNL();
+
if (p) {
if (bind)
p->tcfa_bindcnt--;
@@ -334,6 +337,7 @@ err3:
p->idrinfo = idrinfo;
p->ops = ops;
INIT_LIST_HEAD(&p->list);
+ get_net(idrinfo->net);
*a = p;
return 0;
}
diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c
index c0c707eb2c96..9bce8cc84cbb 100644
--- a/net/sched/act_bpf.c
+++ b/net/sched/act_bpf.c
@@ -398,7 +398,7 @@ static __net_init int bpf_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, bpf_net_id);
- return tc_action_net_init(tn, &act_bpf_ops);
+ return tc_action_net_init(tn, &act_bpf_ops, net);
}
static void __net_exit bpf_exit_net(struct net *net)
diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c
index 10b7a8855a6c..34e52d01a5dd 100644
--- a/net/sched/act_connmark.c
+++ b/net/sched/act_connmark.c
@@ -206,7 +206,7 @@ static __net_init int connmark_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, connmark_net_id);
- return tc_action_net_init(tn, &act_connmark_ops);
+ return tc_action_net_init(tn, &act_connmark_ops, net);
}
static void __net_exit connmark_exit_net(struct net *net)
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index 1c40caadcff9..35171df2ebef 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -626,7 +626,7 @@ static __net_init int csum_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, csum_net_id);
- return tc_action_net_init(tn, &act_csum_ops);
+ return tc_action_net_init(tn, &act_csum_ops, net);
}
static void __net_exit csum_exit_net(struct net *net)
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index e29a48ef7fc3..ef7f7f39d26d 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -232,7 +232,7 @@ static __net_init int gact_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, gact_net_id);
- return tc_action_net_init(tn, &act_gact_ops);
+ return tc_action_net_init(tn, &act_gact_ops, net);
}
static void __net_exit gact_exit_net(struct net *net)
diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c
index 8ccd35825b6b..f65e4b5058e0 100644
--- a/net/sched/act_ife.c
+++ b/net/sched/act_ife.c
@@ -818,7 +818,7 @@ static __net_init int ife_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, ife_net_id);
- return tc_action_net_init(tn, &act_ife_ops);
+ return tc_action_net_init(tn, &act_ife_ops, net);
}
static void __net_exit ife_exit_net(struct net *net)
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index d9e399a7e3d5..dbdf3b2470d5 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -334,7 +334,7 @@ static __net_init int ipt_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, ipt_net_id);
- return tc_action_net_init(tn, &act_ipt_ops);
+ return tc_action_net_init(tn, &act_ipt_ops, net);
}
static void __net_exit ipt_exit_net(struct net *net)
@@ -384,7 +384,7 @@ static __net_init int xt_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, xt_net_id);
- return tc_action_net_init(tn, &act_xt_ops);
+ return tc_action_net_init(tn, &act_xt_ops, net);
}
static void __net_exit xt_exit_net(struct net *net)
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 416627c66f08..84759cfd5a33 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -343,7 +343,7 @@ static __net_init int mirred_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, mirred_net_id);
- return tc_action_net_init(tn, &act_mirred_ops);
+ return tc_action_net_init(tn, &act_mirred_ops, net);
}
static void __net_exit mirred_exit_net(struct net *net)
diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index c365d01b99c8..7eeaaf9217b6 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -307,7 +307,7 @@ static __net_init int nat_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, nat_net_id);
- return tc_action_net_init(tn, &act_nat_ops);
+ return tc_action_net_init(tn, &act_nat_ops, net);
}
static void __net_exit nat_exit_net(struct net *net)
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index 491fe5deb09e..b3d82c334a5f 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -450,7 +450,7 @@ static __net_init int pedit_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, pedit_net_id);
- return tc_action_net_init(tn, &act_pedit_ops);
+ return tc_action_net_init(tn, &act_pedit_ops, net);
}
static void __net_exit pedit_exit_net(struct net *net)
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index 3bb2ebf9e9ae..9ec42b26e4b9 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -331,7 +331,7 @@ static __net_init int police_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, police_net_id);
- return tc_action_net_init(tn, &act_police_ops);
+ return tc_action_net_init(tn, &act_police_ops, net);
}
static void __net_exit police_exit_net(struct net *net)
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index a9f9a2ccc664..e69a1e3a39bf 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -240,7 +240,7 @@ static __net_init int sample_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, sample_net_id);
- return tc_action_net_init(tn, &act_sample_ops);
+ return tc_action_net_init(tn, &act_sample_ops, net);
}
static void __net_exit sample_exit_net(struct net *net)
@@ -271,6 +271,6 @@ static void __exit sample_cleanup_module(void)
module_init(sample_init_module);
module_exit(sample_cleanup_module);
-MODULE_AUTHOR("Yotam Gigi <yotamg@mellanox.com>");
+MODULE_AUTHOR("Yotam Gigi <yotam.gi@gmail.com>");
MODULE_DESCRIPTION("Packet sampling action");
MODULE_LICENSE("GPL v2");
diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index e7b57e5071a3..a8d0ea95f894 100644
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -201,7 +201,7 @@ static __net_init int simp_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, simp_net_id);
- return tc_action_net_init(tn, &act_simp_ops);
+ return tc_action_net_init(tn, &act_simp_ops, net);
}
static void __net_exit simp_exit_net(struct net *net)
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index 59949d61f20d..fbac62472e09 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -238,7 +238,7 @@ static __net_init int skbedit_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, skbedit_net_id);
- return tc_action_net_init(tn, &act_skbedit_ops);
+ return tc_action_net_init(tn, &act_skbedit_ops, net);
}
static void __net_exit skbedit_exit_net(struct net *net)
diff --git a/net/sched/act_skbmod.c b/net/sched/act_skbmod.c
index b642ad3d39dd..8e12d8897d2f 100644
--- a/net/sched/act_skbmod.c
+++ b/net/sched/act_skbmod.c
@@ -263,7 +263,7 @@ static __net_init int skbmod_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, skbmod_net_id);
- return tc_action_net_init(tn, &act_skbmod_ops);
+ return tc_action_net_init(tn, &act_skbmod_ops, net);
}
static void __net_exit skbmod_exit_net(struct net *net)
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index 30c96274c638..c33faa373cf2 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -322,7 +322,7 @@ static __net_init int tunnel_key_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
- return tc_action_net_init(tn, &act_tunnel_key_ops);
+ return tc_action_net_init(tn, &act_tunnel_key_ops, net);
}
static void __net_exit tunnel_key_exit_net(struct net *net)
diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c
index 16eb067a8d8f..115fc33cc6d8 100644
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -269,7 +269,7 @@ static __net_init int vlan_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, vlan_net_id);
- return tc_action_net_init(tn, &act_vlan_ops);
+ return tc_action_net_init(tn, &act_vlan_ops, net);
}
static void __net_exit vlan_exit_net(struct net *net)
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 231181c602ed..b2d310745487 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -280,8 +280,8 @@ static void tcf_block_put_final(struct work_struct *work)
struct tcf_block *block = container_of(work, struct tcf_block, work);
struct tcf_chain *chain, *tmp;
- /* At this point, all the chains should have refcnt == 1. */
rtnl_lock();
+ /* Only chain 0 should be still here. */
list_for_each_entry_safe(chain, tmp, &block->chain_list, list)
tcf_chain_put(chain);
rtnl_unlock();
@@ -289,23 +289,17 @@ static void tcf_block_put_final(struct work_struct *work)
}
/* XXX: Standalone actions are not allowed to jump to any chain, and bound
- * actions should be all removed after flushing. However, filters are destroyed
- * in RCU callbacks, we have to hold the chains first, otherwise we would
- * always race with RCU callbacks on this list without proper locking.
+ * actions should be all removed after flushing. However, filters are now
+ * destroyed in tc filter workqueue with RTNL lock, they can not race here.
*/
-static void tcf_block_put_deferred(struct work_struct *work)
+void tcf_block_put(struct tcf_block *block)
{
- struct tcf_block *block = container_of(work, struct tcf_block, work);
- struct tcf_chain *chain;
+ struct tcf_chain *chain, *tmp;
- rtnl_lock();
- /* Hold a refcnt for all chains, except 0, in case they are gone. */
- list_for_each_entry(chain, &block->chain_list, list)
- if (chain->index)
- tcf_chain_hold(chain);
+ if (!block)
+ return;
- /* No race on the list, because no chain could be destroyed. */
- list_for_each_entry(chain, &block->chain_list, list)
+ list_for_each_entry_safe(chain, tmp, &block->chain_list, list)
tcf_chain_flush(chain);
INIT_WORK(&block->work, tcf_block_put_final);
@@ -314,21 +308,6 @@ static void tcf_block_put_deferred(struct work_struct *work)
*/
rcu_barrier();
tcf_queue_work(&block->work);
- rtnl_unlock();
-}
-
-void tcf_block_put(struct tcf_block *block)
-{
- if (!block)
- return;
-
- INIT_WORK(&block->work, tcf_block_put_deferred);
- /* Wait for existing RCU callbacks to cool down, make sure their works
- * have been queued before this. We can not flush pending works here
- * because we are holding the RTNL lock.
- */
- rcu_barrier();
- tcf_queue_work(&block->work);
}
EXPORT_SYMBOL(tcf_block_put);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 19:51:55 +0000