LXR linux/net/atm/mpoa

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef MPOA_CACHES_H
   3#define MPOA_CACHES_H
   4
   5#include <linux/time64.h>
   6#include <linux/netdevice.h>
   7#include <linux/types.h>
   8#include <linux/atm.h>
   9#include <linux/atmdev.h>
  10#include <linux/atmmpc.h>
  11#include <linux/refcount.h>
  12
  13struct mpoa_client;
  14
  15void atm_mpoa_init_cache(struct mpoa_client *mpc);
  16
  17typedef struct in_cache_entry {
  18        struct in_cache_entry *next;
  19        struct in_cache_entry *prev;
  20        time64_t  time;
  21        time64_t  reply_wait;
  22        time64_t  hold_down;
  23        uint32_t  packets_fwded;
  24        uint16_t  entry_state;
  25        uint32_t retry_time;
  26        uint32_t refresh_time;
  27        uint32_t count;
  28        struct   atm_vcc *shortcut;
  29        uint8_t  MPS_ctrl_ATM_addr[ATM_ESA_LEN];
  30        struct   in_ctrl_info ctrl_info;
  31        refcount_t use;
  32} in_cache_entry;
  33
  34struct in_cache_ops{
  35        in_cache_entry *(*add_entry)(__be32 dst_ip,
  36                                      struct mpoa_client *client);
  37        in_cache_entry *(*get)(__be32 dst_ip, struct mpoa_client *client);
  38        in_cache_entry *(*get_with_mask)(__be32 dst_ip,
  39                                         struct mpoa_client *client,
  40                                         __be32 mask);
  41        in_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc,
  42                                      struct mpoa_client *client);
  43        void            (*put)(in_cache_entry *entry);
  44        void            (*remove_entry)(in_cache_entry *delEntry,
  45                                        struct mpoa_client *client );
  46        int             (*cache_hit)(in_cache_entry *entry,
  47                                     struct mpoa_client *client);
  48        void            (*clear_count)(struct mpoa_client *client);
  49        void            (*check_resolving)(struct mpoa_client *client);
  50        void            (*refresh)(struct mpoa_client *client);
  51        void            (*destroy_cache)(struct mpoa_client *mpc);
  52};
  53
  54typedef struct eg_cache_entry{
  55        struct               eg_cache_entry *next;
  56        struct               eg_cache_entry *prev;
  57        time64_t             time;
  58        uint8_t              MPS_ctrl_ATM_addr[ATM_ESA_LEN];
  59        struct atm_vcc       *shortcut;
  60        uint32_t             packets_rcvd;
  61        uint16_t             entry_state;
  62        __be32             latest_ip_addr;    /* The src IP address of the last packet */
  63        struct eg_ctrl_info  ctrl_info;
  64        refcount_t             use;
  65} eg_cache_entry;
  66
  67struct eg_cache_ops{
  68        eg_cache_entry *(*add_entry)(struct k_message *msg, struct mpoa_client *client);
  69        eg_cache_entry *(*get_by_cache_id)(__be32 cache_id, struct mpoa_client *client);
  70        eg_cache_entry *(*get_by_tag)(__be32 cache_id, struct mpoa_client *client);
  71        eg_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc, struct mpoa_client *client);
  72        eg_cache_entry *(*get_by_src_ip)(__be32 ipaddr, struct mpoa_client *client);
  73        void            (*put)(eg_cache_entry *entry);
  74        void            (*remove_entry)(eg_cache_entry *entry, struct mpoa_client *client);
  75        void            (*update)(eg_cache_entry *entry, uint16_t holding_time);
  76        void            (*clear_expired)(struct mpoa_client *client);
  77        void            (*destroy_cache)(struct mpoa_client *mpc);
  78};
  79
  80
  81/* Ingress cache entry states */
  82
  83#define INGRESS_REFRESHING 3
  84#define INGRESS_RESOLVED   2
  85#define INGRESS_RESOLVING  1
  86#define INGRESS_INVALID    0
  87
  88/* VCC states */
  89
  90#define OPEN   1
  91#define CLOSED 0
  92
  93/* Egress cache entry states */
  94
  95#define EGRESS_RESOLVED 2
  96#define EGRESS_PURGE    1
  97#define EGRESS_INVALID  0
  98
  99#endif
 100