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-rw-r--r--include/net/act_api.h12
-rw-r--r--net/sched/act_api.c51
-rw-r--r--net/sched/cls_api.c14
3 files changed, 42 insertions, 35 deletions
diff --git a/include/net/act_api.h b/include/net/act_api.h
index 2bf3092ae7ec..086b291e9530 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -170,12 +170,7 @@ void tcf_idr_insert_many(struct tc_action *actions[]);
void tcf_idr_cleanup(struct tc_action_net *tn, u32 index);
int tcf_idr_check_alloc(struct tc_action_net *tn, u32 *index,
struct tc_action **a, int bind);
-int __tcf_idr_release(struct tc_action *a, bool bind, bool strict);
-
-static inline int tcf_idr_release(struct tc_action *a, bool bind)
-{
- return __tcf_idr_release(a, bind, false);
-}
+int tcf_idr_release(struct tc_action *a, bool bind);
int tcf_register_action(struct tc_action_ops *a, struct pernet_operations *ops);
int tcf_unregister_action(struct tc_action_ops *a,
@@ -185,7 +180,7 @@ int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions,
int nr_actions, struct tcf_result *res);
int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
struct nlattr *est, char *name, int ovr, int bind,
- struct tc_action *actions[], size_t *attr_size,
+ struct tc_action *actions[], int init_res[], size_t *attr_size,
bool rtnl_held, struct netlink_ext_ack *extack);
struct tc_action_ops *tc_action_load_ops(char *name, struct nlattr *nla,
bool rtnl_held,
@@ -193,7 +188,8 @@ struct tc_action_ops *tc_action_load_ops(char *name, struct nlattr *nla,
struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
struct nlattr *nla, struct nlattr *est,
char *name, int ovr, int bind,
- struct tc_action_ops *ops, bool rtnl_held,
+ struct tc_action_ops *a_o, int *init_res,
+ bool rtnl_held,
struct netlink_ext_ack *extack);
int tcf_action_dump(struct sk_buff *skb, struct tc_action *actions[], int bind,
int ref, bool terse);
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 43cceb924976..f6d5755d669e 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -158,7 +158,7 @@ static int __tcf_action_put(struct tc_action *p, bool bind)
return 0;
}
-int __tcf_idr_release(struct tc_action *p, bool bind, bool strict)
+static int __tcf_idr_release(struct tc_action *p, bool bind, bool strict)
{
int ret = 0;
@@ -184,7 +184,18 @@ int __tcf_idr_release(struct tc_action *p, bool bind, bool strict)
return ret;
}
-EXPORT_SYMBOL(__tcf_idr_release);
+
+int tcf_idr_release(struct tc_action *a, bool bind)
+{
+ const struct tc_action_ops *ops = a->ops;
+ int ret;
+
+ ret = __tcf_idr_release(a, bind, false);
+ if (ret == ACT_P_DELETED)
+ module_put(ops->owner);
+ return ret;
+}
+EXPORT_SYMBOL(tcf_idr_release);
static size_t tcf_action_shared_attrs_size(const struct tc_action *act)
{
@@ -493,6 +504,7 @@ int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est,
}
p->idrinfo = idrinfo;
+ __module_get(ops->owner);
p->ops = ops;
*a = p;
return 0;
@@ -992,7 +1004,8 @@ struct tc_action_ops *tc_action_load_ops(char *name, struct nlattr *nla,
struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
struct nlattr *nla, struct nlattr *est,
char *name, int ovr, int bind,
- struct tc_action_ops *a_o, bool rtnl_held,
+ struct tc_action_ops *a_o, int *init_res,
+ bool rtnl_held,
struct netlink_ext_ack *extack)
{
struct nla_bitfield32 flags = { 0, 0 };
@@ -1028,6 +1041,7 @@ struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
}
if (err < 0)
goto err_out;
+ *init_res = err;
if (!name && tb[TCA_ACT_COOKIE])
tcf_set_action_cookie(&a->act_cookie, cookie);
@@ -1035,16 +1049,6 @@ struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
if (!name)
a->hw_stats = hw_stats;
- /* module count goes up only when brand new policy is created
- * if it exists and is only bound to in a_o->init() then
- * ACT_P_CREATED is not returned (a zero is).
- */
- if (err != ACT_P_CREATED)
- module_put(a_o->owner);
-
- if (!bind && ovr && err == ACT_P_CREATED)
- refcount_set(&a->tcfa_refcnt, 2);
-
return a;
err_out:
@@ -1059,7 +1063,7 @@ err_out:
int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
struct nlattr *est, char *name, int ovr, int bind,
- struct tc_action *actions[], size_t *attr_size,
+ struct tc_action *actions[], int init_res[], size_t *attr_size,
bool rtnl_held, struct netlink_ext_ack *extack)
{
struct tc_action_ops *ops[TCA_ACT_MAX_PRIO] = {};
@@ -1087,7 +1091,8 @@ int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
act = tcf_action_init_1(net, tp, tb[i], est, name, ovr, bind,
- ops[i - 1], rtnl_held, extack);
+ ops[i - 1], &init_res[i - 1], rtnl_held,
+ extack);
if (IS_ERR(act)) {
err = PTR_ERR(act);
goto err;
@@ -1103,7 +1108,8 @@ int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
tcf_idr_insert_many(actions);
*attr_size = tcf_action_full_attrs_size(sz);
- return i - 1;
+ err = i - 1;
+ goto err_mod;
err:
tcf_action_destroy(actions, bind);
@@ -1500,12 +1506,13 @@ static int tcf_action_add(struct net *net, struct nlattr *nla,
struct netlink_ext_ack *extack)
{
size_t attr_size = 0;
- int loop, ret;
+ int loop, ret, i;
struct tc_action *actions[TCA_ACT_MAX_PRIO] = {};
+ int init_res[TCA_ACT_MAX_PRIO] = {};
for (loop = 0; loop < 10; loop++) {
ret = tcf_action_init(net, NULL, nla, NULL, NULL, ovr, 0,
- actions, &attr_size, true, extack);
+ actions, init_res, &attr_size, true, extack);
if (ret != -EAGAIN)
break;
}
@@ -1513,8 +1520,12 @@ static int tcf_action_add(struct net *net, struct nlattr *nla,
if (ret < 0)
return ret;
ret = tcf_add_notify(net, n, actions, portid, attr_size, extack);
- if (ovr)
- tcf_action_put_many(actions);
+
+ /* only put existing actions */
+ for (i = 0; i < TCA_ACT_MAX_PRIO; i++)
+ if (init_res[i] == ACT_P_CREATED)
+ actions[i] = NULL;
+ tcf_action_put_many(actions);
return ret;
}
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 9332ec6863e8..340d5af86e87 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3040,6 +3040,7 @@ int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
{
#ifdef CONFIG_NET_CLS_ACT
{
+ int init_res[TCA_ACT_MAX_PRIO] = {};
struct tc_action *act;
size_t attr_size = 0;
@@ -3051,12 +3052,11 @@ int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
return PTR_ERR(a_o);
act = tcf_action_init_1(net, tp, tb[exts->police],
rate_tlv, "police", ovr,
- TCA_ACT_BIND, a_o, rtnl_held,
- extack);
- if (IS_ERR(act)) {
- module_put(a_o->owner);
+ TCA_ACT_BIND, a_o, init_res,
+ rtnl_held, extack);
+ module_put(a_o->owner);
+ if (IS_ERR(act))
return PTR_ERR(act);
- }
act->type = exts->type = TCA_OLD_COMPAT;
exts->actions[0] = act;
@@ -3067,8 +3067,8 @@ int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
err = tcf_action_init(net, tp, tb[exts->action],
rate_tlv, NULL, ovr, TCA_ACT_BIND,
- exts->actions, &attr_size,
- rtnl_held, extack);
+ exts->actions, init_res,
+ &attr_size, rtnl_held, extack);
if (err < 0)
return err;
exts->nr_actions = err;
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-24 16:43:31 +0300