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-rw-r--r--include/net/act_api.h199
1 files changed, 150 insertions, 49 deletions
diff --git a/include/net/act_api.h b/include/net/act_api.h
index dbc795ec659e..91a24b5e0b93 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -7,6 +7,7 @@
*/
#include <linux/refcount.h>
+#include <net/flow_offload.h>
#include <net/sch_generic.h>
#include <net/pkt_sched.h>
#include <net/net_namespace.h>
@@ -15,6 +16,7 @@
struct tcf_idrinfo {
struct mutex lock;
struct idr action_idr;
+ struct net *net;
};
struct tc_action_ops;
@@ -22,7 +24,6 @@ struct tc_action_ops;
struct tc_action {
const struct tc_action_ops *ops;
__u32 type; /* for backward compat(TCA_OLD_COMPAT) */
- __u32 order;
struct tcf_idrinfo *idrinfo;
u32 tcfa_index;
@@ -30,16 +31,24 @@ struct tc_action {
atomic_t tcfa_bindcnt;
int tcfa_action;
struct tcf_t tcfa_tm;
- struct gnet_stats_basic_packed tcfa_bstats;
- struct gnet_stats_basic_packed tcfa_bstats_hw;
- struct gnet_stats_queue tcfa_qstats;
+ struct gnet_stats_basic_sync tcfa_bstats;
+ struct gnet_stats_basic_sync tcfa_bstats_hw;
+
+ atomic_t tcfa_drops;
+ atomic_t tcfa_overlimits;
+
struct net_rate_estimator __rcu *tcfa_rate_est;
spinlock_t tcfa_lock;
- struct gnet_stats_basic_cpu __percpu *cpu_bstats;
- struct gnet_stats_basic_cpu __percpu *cpu_bstats_hw;
+ struct gnet_stats_basic_sync __percpu *cpu_bstats;
+ struct gnet_stats_basic_sync __percpu *cpu_bstats_hw;
struct gnet_stats_queue __percpu *cpu_qstats;
- struct tc_cookie __rcu *act_cookie;
- struct tcf_chain *goto_chain;
+ struct tc_cookie __rcu *user_cookie;
+ struct tcf_chain __rcu *goto_chain;
+ u32 tcfa_flags;
+ u8 hw_stats;
+ u8 used_hw_stats;
+ bool used_hw_stats_valid;
+ u32 in_hw_count;
};
#define tcf_index common.tcfa_index
#define tcf_refcnt common.tcfa_refcnt
@@ -47,10 +56,21 @@ struct tc_action {
#define tcf_action common.tcfa_action
#define tcf_tm common.tcfa_tm
#define tcf_bstats common.tcfa_bstats
-#define tcf_qstats common.tcfa_qstats
#define tcf_rate_est common.tcfa_rate_est
#define tcf_lock common.tcfa_lock
+#define TCA_ACT_HW_STATS_ANY (TCA_ACT_HW_STATS_IMMEDIATE | \
+ TCA_ACT_HW_STATS_DELAYED)
+
+/* Reserve 16 bits for user-space. See TCA_ACT_FLAGS_NO_PERCPU_STATS. */
+#define TCA_ACT_FLAGS_USER_BITS 16
+#define TCA_ACT_FLAGS_USER_MASK 0xffff
+#define TCA_ACT_FLAGS_POLICE (1U << TCA_ACT_FLAGS_USER_BITS)
+#define TCA_ACT_FLAGS_BIND (1U << (TCA_ACT_FLAGS_USER_BITS + 1))
+#define TCA_ACT_FLAGS_REPLACE (1U << (TCA_ACT_FLAGS_USER_BITS + 2))
+#define TCA_ACT_FLAGS_NO_RTNL (1U << (TCA_ACT_FLAGS_USER_BITS + 3))
+#define TCA_ACT_FLAGS_AT_INGRESS (1U << (TCA_ACT_FLAGS_USER_BITS + 4))
+
/* Update lastuse only if needed, to avoid dirtying a cache line.
* We use a temp variable to avoid fetching jiffies twice.
*/
@@ -58,29 +78,43 @@ static inline void tcf_lastuse_update(struct tcf_t *tm)
{
unsigned long now = jiffies;
- if (tm->lastuse != now)
- tm->lastuse = now;
- if (unlikely(!tm->firstuse))
- tm->firstuse = now;
+ if (READ_ONCE(tm->lastuse) != now)
+ WRITE_ONCE(tm->lastuse, now);
+ if (unlikely(!READ_ONCE(tm->firstuse)))
+ WRITE_ONCE(tm->firstuse, now);
}
static inline void tcf_tm_dump(struct tcf_t *dtm, const struct tcf_t *stm)
{
- dtm->install = jiffies_to_clock_t(jiffies - stm->install);
- dtm->lastuse = jiffies_to_clock_t(jiffies - stm->lastuse);
- dtm->firstuse = jiffies_to_clock_t(jiffies - stm->firstuse);
- dtm->expires = jiffies_to_clock_t(stm->expires);
+ unsigned long firstuse, now = jiffies;
+
+ dtm->install = jiffies_to_clock_t(now - READ_ONCE(stm->install));
+ dtm->lastuse = jiffies_to_clock_t(now - READ_ONCE(stm->lastuse));
+
+ firstuse = READ_ONCE(stm->firstuse);
+ dtm->firstuse = firstuse ?
+ jiffies_to_clock_t(now - firstuse) : 0;
+
+ dtm->expires = jiffies_to_clock_t(READ_ONCE(stm->expires));
}
-#ifdef CONFIG_NET_CLS_ACT
+static inline enum flow_action_hw_stats tc_act_hw_stats(u8 hw_stats)
+{
+ if (WARN_ON_ONCE(hw_stats > TCA_ACT_HW_STATS_ANY))
+ return FLOW_ACTION_HW_STATS_DONT_CARE;
+ else if (!hw_stats)
+ return FLOW_ACTION_HW_STATS_DISABLED;
-#define ACT_P_CREATED 1
-#define ACT_P_DELETED 1
+ return hw_stats;
+}
+
+typedef void (*tc_action_priv_destructor)(void *priv);
struct tc_action_ops {
struct list_head head;
char kind[IFNAMSIZ];
- __u32 type; /* TBD to match kind */
+ enum tca_id id; /* identifier should match kind */
+ unsigned int net_id;
size_t size;
struct module *owner;
int (*act)(struct sk_buff *, const struct tc_action *,
@@ -89,26 +123,38 @@ struct tc_action_ops {
void (*cleanup)(struct tc_action *);
int (*lookup)(struct net *net, struct tc_action **a, u32 index);
int (*init)(struct net *net, struct nlattr *nla,
- struct nlattr *est, struct tc_action **act, int ovr,
- int bind, bool rtnl_held,
- struct netlink_ext_ack *extack);
+ struct nlattr *est, struct tc_action **act,
+ struct tcf_proto *tp,
+ u32 flags, struct netlink_ext_ack *extack);
int (*walk)(struct net *, struct sk_buff *,
struct netlink_callback *, int,
const struct tc_action_ops *,
struct netlink_ext_ack *);
- void (*stats_update)(struct tc_action *, u64, u32, u64, bool);
+ void (*stats_update)(struct tc_action *, u64, u64, u64, u64, bool);
size_t (*get_fill_size)(const struct tc_action *act);
- struct net_device *(*get_dev)(const struct tc_action *a);
- void (*put_dev)(struct net_device *dev);
+ struct net_device *(*get_dev)(const struct tc_action *a,
+ tc_action_priv_destructor *destructor);
+ struct psample_group *
+ (*get_psample_group)(const struct tc_action *a,
+ tc_action_priv_destructor *destructor);
+ int (*offload_act_setup)(struct tc_action *act, void *entry_data,
+ u32 *index_inc, bool bind,
+ struct netlink_ext_ack *extack);
};
+#ifdef CONFIG_NET_CLS_ACT
+
+#define ACT_P_BOUND 0
+#define ACT_P_CREATED 1
+#define ACT_P_DELETED 1
+
struct tc_action_net {
struct tcf_idrinfo *idrinfo;
const struct tc_action_ops *ops;
};
static inline
-int tc_action_net_init(struct tc_action_net *tn,
+int tc_action_net_init(struct net *net, struct tc_action_net *tn,
const struct tc_action_ops *ops)
{
int err = 0;
@@ -117,6 +163,7 @@ int tc_action_net_init(struct tc_action_net *tn,
if (!tn->idrinfo)
return -ENOMEM;
tn->ops = ops;
+ tn->idrinfo->net = net;
mutex_init(&tn->idrinfo->lock);
idr_init(&tn->idrinfo->action_idr);
return err;
@@ -130,14 +177,12 @@ static inline void tc_action_net_exit(struct list_head *net_list,
{
struct net *net;
- rtnl_lock();
list_for_each_entry(net, net_list, exit_list) {
struct tc_action_net *tn = net_generic(net, id);
tcf_idrinfo_destroy(tn->ops, tn->idrinfo);
kfree(tn->idrinfo);
}
- rtnl_unlock();
}
int tcf_generic_walker(struct tc_action_net *tn, struct sk_buff *skb,
@@ -147,50 +192,106 @@ int tcf_generic_walker(struct tc_action_net *tn, struct sk_buff *skb,
int tcf_idr_search(struct tc_action_net *tn, struct tc_action **a, u32 index);
int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est,
struct tc_action **a, const struct tc_action_ops *ops,
- int bind, bool cpustats);
-void tcf_idr_insert(struct tc_action_net *tn, struct tc_action *a);
-
+ int bind, bool cpustats, u32 flags);
+int tcf_idr_create_from_flags(struct tc_action_net *tn, u32 index,
+ struct nlattr *est, struct tc_action **a,
+ const struct tc_action_ops *ops, int bind,
+ u32 flags);
+void tcf_idr_insert_many(struct tc_action *actions[], int init_res[]);
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,
struct pernet_operations *ops);
+#define NET_ACT_ALIAS_PREFIX "net-act-"
+#define MODULE_ALIAS_NET_ACT(kind) MODULE_ALIAS(NET_ACT_ALIAS_PREFIX kind)
int tcf_action_destroy(struct tc_action *actions[], int bind);
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,
- bool rtnl_held, struct netlink_ext_ack *extack);
+ struct nlattr *est,
+ struct tc_action *actions[], int init_res[], size_t *attr_size,
+ u32 flags, u32 fl_flags, struct netlink_ext_ack *extack);
+struct tc_action_ops *tc_action_load_ops(struct nlattr *nla, u32 flags,
+ struct netlink_ext_ack *extack);
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,
- bool rtnl_held,
- struct netlink_ext_ack *extack);
+ struct tc_action_ops *a_o, int *init_res,
+ u32 flags, struct netlink_ext_ack *extack);
int tcf_action_dump(struct sk_buff *skb, struct tc_action *actions[], int bind,
- int ref);
+ int ref, bool terse);
int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
-int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
+
+static inline void tcf_action_update_bstats(struct tc_action *a,
+ struct sk_buff *skb)
+{
+ if (likely(a->cpu_bstats)) {
+ bstats_update(this_cpu_ptr(a->cpu_bstats), skb);
+ return;
+ }
+ spin_lock(&a->tcfa_lock);
+ bstats_update(&a->tcfa_bstats, skb);
+ spin_unlock(&a->tcfa_lock);
+}
+
+static inline void tcf_action_inc_drop_qstats(struct tc_action *a)
+{
+ if (likely(a->cpu_qstats)) {
+ qstats_drop_inc(this_cpu_ptr(a->cpu_qstats));
+ return;
+ }
+ atomic_inc(&a->tcfa_drops);
+}
+
+static inline void tcf_action_inc_overlimit_qstats(struct tc_action *a)
+{
+ if (likely(a->cpu_qstats)) {
+ qstats_overlimit_inc(this_cpu_ptr(a->cpu_qstats));
+ return;
+ }
+ atomic_inc(&a->tcfa_overlimits);
+}
+
+void tcf_action_update_stats(struct tc_action *a, u64 bytes, u64 packets,
+ u64 drops, bool hw);
int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int);
+int tcf_action_update_hw_stats(struct tc_action *action);
+int tcf_action_reoffload_cb(flow_indr_block_bind_cb_t *cb,
+ void *cb_priv, bool add);
+int tcf_action_check_ctrlact(int action, struct tcf_proto *tp,
+ struct tcf_chain **handle,
+ struct netlink_ext_ack *newchain);
+struct tcf_chain *tcf_action_set_ctrlact(struct tc_action *a, int action,
+ struct tcf_chain *newchain);
+
+#ifdef CONFIG_INET
+DECLARE_STATIC_KEY_FALSE(tcf_frag_xmit_count);
+#endif
+
+int tcf_dev_queue_xmit(struct sk_buff *skb, int (*xmit)(struct sk_buff *skb));
+
+#else /* !CONFIG_NET_CLS_ACT */
+
+static inline int tcf_action_reoffload_cb(flow_indr_block_bind_cb_t *cb,
+ void *cb_priv, bool add) {
+ return 0;
+}
+
#endif /* CONFIG_NET_CLS_ACT */
static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes,
- u64 packets, u64 lastuse, bool hw)
+ u64 packets, u64 drops,
+ u64 lastuse, bool hw)
{
#ifdef CONFIG_NET_CLS_ACT
if (!a->ops->stats_update)
return;
- a->ops->stats_update(a, bytes, packets, lastuse, hw);
+ a->ops->stats_update(a, bytes, packets, drops, lastuse, hw);
#endif
}
generated by cgit (git 2.34.1) at 2025-12-24 19:20:26 +0000