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authorVlad Buslov <vladbu@mellanox.com>2019-09-13 18:28:41 +0300
committerDavid S. Miller <davem@davemloft.net>2019-09-16 10:18:03 +0300
commit470d5060e6b3b8fae47d944601855e9ece7a2470 (patch)
treeb91a0dfb567b5ed2878d5543014a65196f7fe7ae /net/sched
parent4a5da47d5cb6aba3c26a5cc0dddfb2d577e851e9 (diff)
downloadlinux-470d5060e6b3b8fae47d944601855e9ece7a2470.tar.xz
net: sched: use get_dev() action API in flow_action infra
When filling in hardware intermediate representation tc_setup_flow_action() directly obtains, checks and takes reference to dev used by mirred action, instead of using act->ops->get_dev() API created specifically for this purpose. In order to remove code duplication, refactor flow_action infra to use action API when obtaining mirred action target dev. Extend get_dev() with additional argument that is used to provide dev destructor to the user. Fixes: 5a6ff4b13d59 ("net: sched: take reference to action dev before calling offloads") Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/act_mirred.c21
-rw-r--r--net/sched/cls_api.c13
2 files changed, 16 insertions, 18 deletions
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 9d1bf508075a..9ce073a05414 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -408,25 +408,31 @@ static struct notifier_block mirred_device_notifier = {
.notifier_call = mirred_device_event,
};
-static struct net_device *tcf_mirred_get_dev(const struct tc_action *a)
+static void tcf_mirred_dev_put(void *priv)
+{
+ struct net_device *dev = priv;
+
+ dev_put(dev);
+}
+
+static struct net_device *
+tcf_mirred_get_dev(const struct tc_action *a,
+ tc_action_priv_destructor *destructor)
{
struct tcf_mirred *m = to_mirred(a);
struct net_device *dev;
rcu_read_lock();
dev = rcu_dereference(m->tcfm_dev);
- if (dev)
+ if (dev) {
dev_hold(dev);
+ *destructor = tcf_mirred_dev_put;
+ }
rcu_read_unlock();
return dev;
}
-static void tcf_mirred_put_dev(struct net_device *dev)
-{
- dev_put(dev);
-}
-
static size_t tcf_mirred_get_fill_size(const struct tc_action *act)
{
return nla_total_size(sizeof(struct tc_mirred));
@@ -446,7 +452,6 @@ static struct tc_action_ops act_mirred_ops = {
.get_fill_size = tcf_mirred_get_fill_size,
.size = sizeof(struct tcf_mirred),
.get_dev = tcf_mirred_get_dev,
- .put_dev = tcf_mirred_put_dev,
};
static __net_init int mirred_init_net(struct net *net)
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 60d44b14750a..32577c248968 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3288,22 +3288,15 @@ void tc_cleanup_flow_action(struct flow_action *flow_action)
}
EXPORT_SYMBOL(tc_cleanup_flow_action);
-static void tcf_mirred_put_dev(void *priv)
-{
- struct net_device *dev = priv;
-
- dev_put(dev);
-}
-
static void tcf_mirred_get_dev(struct flow_action_entry *entry,
const struct tc_action *act)
{
- entry->dev = tcf_mirred_dev(act);
+#ifdef CONFIG_NET_CLS_ACT
+ entry->dev = act->ops->get_dev(act, &entry->destructor);
if (!entry->dev)
return;
- dev_hold(entry->dev);
- entry->destructor = tcf_mirred_put_dev;
entry->destructor_priv = entry->dev;
+#endif
}
static void tcf_tunnel_encap_put_tunnel(void *priv)