net/atm/mpoa_caches.h

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