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 99