[linux-block.git] / include / net / gen_stats.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_GEN_STATS_H
#define __NET_GEN_STATS_H

#include <linux/gen_stats.h>
#include <linux/socket.h>
#include <linux/rtnetlink.h>
#include <linux/pkt_sched.h>

/* Throughput stats.
 * Must be initialized beforehand with gnet_stats_basic_sync_init().
 *
 * If no reads can ever occur parallel to writes (e.g. stack-allocated
 * bstats), then the internal stat values can be written to and read
 * from directly. Otherwise, use _bstats_set/update() for writes and
 * gnet_stats_add_basic() for reads.
 */
struct gnet_stats_basic_sync {
	u64_stats_t bytes;
	u64_stats_t packets;
	struct u64_stats_sync syncp;
} __aligned(2 * sizeof(u64));

struct net_rate_estimator;

struct gnet_dump {
	spinlock_t *      lock;
	struct sk_buff *  skb;
	struct nlattr *   tail;

	/* Backward compatibility */
	int               compat_tc_stats;
	int               compat_xstats;
	int               padattr;
	void *            xstats;
	int               xstats_len;
	struct tc_stats   tc_stats;
};

void gnet_stats_basic_sync_init(struct gnet_stats_basic_sync *b);
int gnet_stats_start_copy(struct sk_buff *skb, int type, spinlock_t *lock,
			  struct gnet_dump *d, int padattr);

int gnet_stats_start_copy_compat(struct sk_buff *skb, int type,
				 int tc_stats_type, int xstats_type,
				 spinlock_t *lock, struct gnet_dump *d,
				 int padattr);

int gnet_stats_copy_basic(struct gnet_dump *d,
			  struct gnet_stats_basic_sync __percpu *cpu,
			  struct gnet_stats_basic_sync *b, bool running);
void gnet_stats_add_basic(struct gnet_stats_basic_sync *bstats,
			  struct gnet_stats_basic_sync __percpu *cpu,
			  struct gnet_stats_basic_sync *b, bool running);
int gnet_stats_copy_basic_hw(struct gnet_dump *d,
			     struct gnet_stats_basic_sync __percpu *cpu,
			     struct gnet_stats_basic_sync *b, bool running);
int gnet_stats_copy_rate_est(struct gnet_dump *d,
			     struct net_rate_estimator __rcu **ptr);
int gnet_stats_copy_queue(struct gnet_dump *d,
			  struct gnet_stats_queue __percpu *cpu_q,
			  struct gnet_stats_queue *q, __u32 qlen);
void gnet_stats_add_queue(struct gnet_stats_queue *qstats,
			  const struct gnet_stats_queue __percpu *cpu_q,
			  const struct gnet_stats_queue *q);
int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);

int gnet_stats_finish_copy(struct gnet_dump *d);

int gen_new_estimator(struct gnet_stats_basic_sync *bstats,
		      struct gnet_stats_basic_sync __percpu *cpu_bstats,
		      struct net_rate_estimator __rcu **rate_est,
		      spinlock_t *lock,
		      bool running, struct nlattr *opt);
void gen_kill_estimator(struct net_rate_estimator __rcu **ptr);
int gen_replace_estimator(struct gnet_stats_basic_sync *bstats,
			  struct gnet_stats_basic_sync __percpu *cpu_bstats,
			  struct net_rate_estimator __rcu **ptr,
			  spinlock_t *lock,
			  bool running, struct nlattr *opt);
bool gen_estimator_active(struct net_rate_estimator __rcu **ptr);
bool gen_estimator_read(struct net_rate_estimator __rcu **ptr,
			struct gnet_stats_rate_est64 *sample);
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef __NET_GEN_STATS_H
	3	#define __NET_GEN_STATS_H
	4
	5	#include <linux/gen_stats.h>
	6	#include <linux/socket.h>
	7	#include <linux/rtnetlink.h>
	8	#include <linux/pkt_sched.h>
	9
50dc9a85 AD	10	/* Throughput stats.
	11	* Must be initialized beforehand with gnet_stats_basic_sync_init().
	12	*
	13	* If no reads can ever occur parallel to writes (e.g. stack-allocated
	14	* bstats), then the internal stat values can be written to and read
	15	* from directly. Otherwise, use _bstats_set/update() for writes and
	16	* gnet_stats_add_basic() for reads.
	17	*/
	18	struct gnet_stats_basic_sync {
	19	u64_stats_t bytes;
	20	u64_stats_t packets;
22e0f8b9	21	struct u64_stats_sync syncp;
001c96db	22	} __aligned(2 * sizeof(u64));
22e0f8b9	23
1c0d32fd ED	24	struct net_rate_estimator;
1c0d32fd ED	25
fd2c3ef7	26	struct gnet_dump {
1da177e4 LT	27	spinlock_t * lock;
1da177e4 LT	28	struct sk_buff * skb;
1e90474c	29	struct nlattr * tail;
1da177e4	30
25985edc	31	/* Backward compatibility */
1da177e4 LT	32	int compat_tc_stats;
1da177e4 LT	33	int compat_xstats;
9854518e	34	int padattr;
1da177e4 LT	35	void * xstats;
	36	int xstats_len;
	37	struct tc_stats tc_stats;
	38	};
	39
50dc9a85	40	void gnet_stats_basic_sync_init(struct gnet_stats_basic_sync *b);
8aae218f	41	int gnet_stats_start_copy(struct sk_buff skb, int type, spinlock_t lock,
9854518e	42	struct gnet_dump *d, int padattr);
8aae218f JP	43
	44	int gnet_stats_start_copy_compat(struct sk_buff *skb, int type,
	45	int tc_stats_type, int xstats_type,
9854518e ND	46	spinlock_t lock, struct gnet_dump d,
9854518e ND	47	int padattr);
1da177e4	48
29cbcd85	49	int gnet_stats_copy_basic(struct gnet_dump *d,
50dc9a85	50	struct gnet_stats_basic_sync __percpu *cpu,
29cbcd85 AD	51	struct gnet_stats_basic_sync *b, bool running);
29cbcd85 AD	52	void gnet_stats_add_basic(struct gnet_stats_basic_sync *bstats,
50dc9a85	53	struct gnet_stats_basic_sync __percpu *cpu,
29cbcd85 AD	54	struct gnet_stats_basic_sync *b, bool running);
29cbcd85 AD	55	int gnet_stats_copy_basic_hw(struct gnet_dump *d,
50dc9a85	56	struct gnet_stats_basic_sync __percpu *cpu,
29cbcd85	57	struct gnet_stats_basic_sync *b, bool running);
8aae218f	58	int gnet_stats_copy_rate_est(struct gnet_dump *d,
1c0d32fd	59	struct net_rate_estimator __rcu **ptr);
64015853	60	int gnet_stats_copy_queue(struct gnet_dump *d,
b0ab6f92 JF	61	struct gnet_stats_queue __percpu *cpu_q,
b0ab6f92 JF	62	struct gnet_stats_queue *q, __u32 qlen);
448e163f SAS	63	void gnet_stats_add_queue(struct gnet_stats_queue *qstats,
	64	const struct gnet_stats_queue __percpu *cpu_q,
	65	const struct gnet_stats_queue *q);
8aae218f JP	66	int gnet_stats_copy_app(struct gnet_dump d, void st, int len);
	67
	68	int gnet_stats_finish_copy(struct gnet_dump *d);
	69
50dc9a85 AD	70	int gen_new_estimator(struct gnet_stats_basic_sync *bstats,
50dc9a85 AD	71	struct gnet_stats_basic_sync __percpu *cpu_bstats,
1c0d32fd	72	struct net_rate_estimator __rcu **rate_est,
51a9f5ae	73	spinlock_t *lock,
29cbcd85	74	bool running, struct nlattr *opt);
1c0d32fd	75	void gen_kill_estimator(struct net_rate_estimator __rcu **ptr);
50dc9a85 AD	76	int gen_replace_estimator(struct gnet_stats_basic_sync *bstats,
50dc9a85 AD	77	struct gnet_stats_basic_sync __percpu *cpu_bstats,
1c0d32fd	78	struct net_rate_estimator __rcu **ptr,
51a9f5ae	79	spinlock_t *lock,
29cbcd85	80	bool running, struct nlattr *opt);
1c0d32fd ED	81	bool gen_estimator_active(struct net_rate_estimator __rcu **ptr);
	82	bool gen_estimator_read(struct net_rate_estimator __rcu **ptr,
	83	struct gnet_stats_rate_est64 *sample);
1da177e4	84	#endif