[mirror_ubuntu-bionic-kernel.git] / net / atm / mpoa_caches.h

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

#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/atm.h>
#include <linux/atmdev.h>
#include <linux/atmmpc.h>
#include <linux/refcount.h>

struct mpoa_client;

void atm_mpoa_init_cache(struct mpoa_client *mpc);

typedef struct in_cache_entry {
	struct in_cache_entry *next;
	struct in_cache_entry *prev;
	struct timeval  tv;
	struct timeval  reply_wait;
	struct timeval  hold_down;
	uint32_t  packets_fwded;
	uint16_t  entry_state;
	uint32_t retry_time;
	uint32_t refresh_time;
	uint32_t count;
	struct   atm_vcc *shortcut;
	uint8_t  MPS_ctrl_ATM_addr[ATM_ESA_LEN];
	struct   in_ctrl_info ctrl_info;
	refcount_t use;
} in_cache_entry;

struct in_cache_ops{
	in_cache_entry *(*add_entry)(__be32 dst_ip,
				      struct mpoa_client *client);
	in_cache_entry *(*get)(__be32 dst_ip, struct mpoa_client *client);
	in_cache_entry *(*get_with_mask)(__be32 dst_ip,
					 struct mpoa_client *client,
					 __be32 mask);
	in_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc,
				      struct mpoa_client *client);
	void            (*put)(in_cache_entry *entry);
	void            (*remove_entry)(in_cache_entry *delEntry,
					struct mpoa_client *client );
	int             (*cache_hit)(in_cache_entry *entry,
				     struct mpoa_client *client);
	void            (*clear_count)(struct mpoa_client *client);
	void            (*check_resolving)(struct mpoa_client *client);
	void            (*refresh)(struct mpoa_client *client);
	void            (*destroy_cache)(struct mpoa_client *mpc);
};

typedef struct eg_cache_entry{
	struct               eg_cache_entry *next;
	struct               eg_cache_entry *prev;
	struct               timeval  tv;
	uint8_t              MPS_ctrl_ATM_addr[ATM_ESA_LEN];
	struct atm_vcc       *shortcut;
	uint32_t             packets_rcvd;
	uint16_t             entry_state;
	__be32             latest_ip_addr;    /* The src IP address of the last packet */
	struct eg_ctrl_info  ctrl_info;
	refcount_t             use;
} eg_cache_entry;

struct eg_cache_ops{
	eg_cache_entry *(*add_entry)(struct k_message *msg, struct mpoa_client *client);
	eg_cache_entry *(*get_by_cache_id)(__be32 cache_id, struct mpoa_client *client);
	eg_cache_entry *(*get_by_tag)(__be32 cache_id, struct mpoa_client *client);
	eg_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc, struct mpoa_client *client);
	eg_cache_entry *(*get_by_src_ip)(__be32 ipaddr, struct mpoa_client *client);
	void            (*put)(eg_cache_entry *entry);
	void            (*remove_entry)(eg_cache_entry *entry, struct mpoa_client *client);
	void            (*update)(eg_cache_entry *entry, uint16_t holding_time);
	void            (*clear_expired)(struct mpoa_client *client);
	void            (*destroy_cache)(struct mpoa_client *mpc);
};


/* Ingress cache entry states */

#define INGRESS_REFRESHING 3
#define INGRESS_RESOLVED   2
#define INGRESS_RESOLVING  1
#define INGRESS_INVALID    0

/* VCC states */

#define OPEN   1
#define CLOSED 0

/* Egress cache entry states */

#define EGRESS_RESOLVED 2
#define EGRESS_PURGE    1
#define EGRESS_INVALID  0

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef MPOA_CACHES_H
	3	#define MPOA_CACHES_H
	4
	5	#include <linux/netdevice.h>
	6	#include <linux/types.h>
	7	#include <linux/atm.h>
	8	#include <linux/atmdev.h>
	9	#include <linux/atmmpc.h>
93714912	10	#include <linux/refcount.h>
1da177e4 LT	11
	12	struct mpoa_client;
	13
	14	void atm_mpoa_init_cache(struct mpoa_client *mpc);
	15
	16	typedef struct in_cache_entry {
f7d57453 YH	17	struct in_cache_entry *next;
	18	struct in_cache_entry *prev;
	19	struct timeval tv;
	20	struct timeval reply_wait;
	21	struct timeval hold_down;
	22	uint32_t packets_fwded;
	23	uint16_t entry_state;
	24	uint32_t retry_time;
	25	uint32_t refresh_time;
	26	uint32_t count;
	27	struct atm_vcc *shortcut;
	28	uint8_t MPS_ctrl_ATM_addr[ATM_ESA_LEN];
	29	struct in_ctrl_info ctrl_info;
93714912	30	refcount_t use;
1da177e4 LT	31	} in_cache_entry;
	32
	33	struct in_cache_ops{
f7d57453 YH	34	in_cache_entry (add_entry)(__be32 dst_ip,
	35	struct mpoa_client *client);
	36	in_cache_entry (get)(__be32 dst_ip, struct mpoa_client *client);
	37	in_cache_entry (get_with_mask)(__be32 dst_ip,
1da177e4	38	struct mpoa_client *client,
30d492da	39	__be32 mask);
f7d57453 YH	40	in_cache_entry (get_by_vcc)(struct atm_vcc *vcc,
	41	struct mpoa_client *client);
	42	void (put)(in_cache_entry entry);
	43	void (remove_entry)(in_cache_entry delEntry,
1da177e4	44	struct mpoa_client *client );
f7d57453 YH	45	int (cache_hit)(in_cache_entry entry,
	46	struct mpoa_client *client);
	47	void (clear_count)(struct mpoa_client client);
	48	void (check_resolving)(struct mpoa_client client);
	49	void (refresh)(struct mpoa_client client);
	50	void (destroy_cache)(struct mpoa_client mpc);
1da177e4 LT	51	};
	52
	53	typedef struct eg_cache_entry{
f7d57453 YH	54	struct eg_cache_entry *next;
	55	struct eg_cache_entry *prev;
	56	struct timeval tv;
	57	uint8_t MPS_ctrl_ATM_addr[ATM_ESA_LEN];
	58	struct atm_vcc *shortcut;
	59	uint32_t packets_rcvd;
	60	uint16_t entry_state;
	61	__be32 latest_ip_addr; /* The src IP address of the last packet */
	62	struct eg_ctrl_info ctrl_info;
e00bdbef	63	refcount_t use;
1da177e4 LT	64	} eg_cache_entry;
	65
	66	struct eg_cache_ops{
f7d57453 YH	67	eg_cache_entry (add_entry)(struct k_message msg, struct mpoa_client client);
	68	eg_cache_entry (get_by_cache_id)(__be32 cache_id, struct mpoa_client *client);
	69	eg_cache_entry (get_by_tag)(__be32 cache_id, struct mpoa_client *client);
	70	eg_cache_entry (get_by_vcc)(struct atm_vcc vcc, struct mpoa_client client);
	71	eg_cache_entry (get_by_src_ip)(__be32 ipaddr, struct mpoa_client *client);
	72	void (put)(eg_cache_entry entry);
	73	void (remove_entry)(eg_cache_entry entry, struct mpoa_client *client);
	74	void (update)(eg_cache_entry entry, uint16_t holding_time);
	75	void (clear_expired)(struct mpoa_client client);
	76	void (destroy_cache)(struct mpoa_client mpc);
1da177e4 LT	77	};
	78
	79
	80	/* Ingress cache entry states */
	81
	82	#define INGRESS_REFRESHING 3
	83	#define INGRESS_RESOLVED 2
	84	#define INGRESS_RESOLVING 1
	85	#define INGRESS_INVALID 0
	86
	87	/* VCC states */
	88
	89	#define OPEN 1
f7d57453	90	#define CLOSED 0
1da177e4 LT	91
	92	/* Egress cache entry states */
	93
	94	#define EGRESS_RESOLVED 2
	95	#define EGRESS_PURGE 1
	96	#define EGRESS_INVALID 0
	97
	98	#endif