net/atm/mpoa_caches.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   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>
  10 #include <linux/refcount.h>
  11
  12 struct mpoa_client;
  13
  14 void atm_mpoa_init_cache(struct mpoa_client *mpc);
  15
  16 typedef struct in_cache_entry {
  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;
  30         refcount_t use;
  31 } in_cache_entry;
  32
  33 struct in_cache_ops{
  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,
  38                                          struct mpoa_client *client,
  39                                          __be32 mask);
  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,
  44                                         struct mpoa_client *client );
  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);
  51 };
  52
  53 typedef struct eg_cache_entry{
  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;
  63         refcount_t             use;
  64 } eg_cache_entry;
  65
  66 struct eg_cache_ops{
  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);
  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
  90 #define CLOSED 0
  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