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dns-cache: support cache when speed check is disabled

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This commit is contained in:
Nick Peng
2020-08-23 20:12:50 +08:00
parent 98429e88f1
commit aee19be262
5 changed files with 443 additions and 183 deletions
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69
src/dns_cache.h
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@@ -33,35 +33,74 @@ extern "C" {
#define DNS_CACHE_TTL_MIN 30
enum CACHE_TYPE {
CACHE_TYPE_NONE,
CACHE_TYPE_ADDR,
CACHE_TYPE_PACKET,
};
struct dns_cache_data_head {
uint32_t cache_flag;
enum CACHE_TYPE cache_type;
size_t size;
};
struct dns_cache_data {
struct dns_cache_data_head head;
unsigned char data[0];
};
struct dns_cache_addr {
struct dns_cache_data_head head;
struct dns_cache_addr_data {
unsigned int cname_ttl;
char cname[DNS_MAX_CNAME_LEN];
union {
unsigned char ipv4_addr[DNS_RR_A_LEN];
unsigned char ipv6_addr[DNS_RR_AAAA_LEN];
unsigned char addr[0];
};
} addr_data;
};
struct dns_cache_packet {
struct dns_cache_data_head head;
unsigned char data[0];
};
struct dns_cache {
struct hlist_node node;
struct list_head list;
struct list_head check_list;
atomic_t ref;
char domain[DNS_MAX_CNAME_LEN];
char cname[DNS_MAX_CNAME_LEN];
unsigned int cname_ttl;
unsigned int ttl;
int speed;
atomic_t hitnum;
char domain[DNS_MAX_CNAME_LEN];
int ttl;
int speed;
int hitnum_update_add;
int del_pending;
time_t insert_time;
dns_type_t qtype;
union {
unsigned char ipv4_addr[DNS_RR_A_LEN];
unsigned char ipv6_addr[DNS_RR_AAAA_LEN];
unsigned char addr[0];
};
struct dns_cache_data *cache_data;
};
enum CACHE_TYPE dns_cache_data_type(struct dns_cache_data *cache_data);
uint32_t dns_cache_get_cache_flag(struct dns_cache_data *cache_data);
void dns_cache_data_free(struct dns_cache_data *data);
struct dns_cache_data *dns_cache_new_data_addr(uint32_t cache_flag, char *cname, int cname_ttl, unsigned char *addr, int addr_len);
struct dns_cache_data *dns_cache_new_data_packet(uint32_t cache_flag, void *packet, size_t packet_len);
int dns_cache_init(int size, int enable_inactive, int inactive_list_expired);
int dns_cache_replace(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr,
int addr_len, int speed);
int dns_cache_replace(char *domain, int ttl, dns_type_t qtype, int speed, struct dns_cache_data *cache_data);
int dns_cache_insert(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr,
int addr_len, int speed);
int dns_cache_insert(char *domain, int ttl, dns_type_t qtype, int speed, struct dns_cache_data *cache_data);
struct dns_cache *dns_cache_lookup(char *domain, dns_type_t qtype);
@@ -81,6 +120,8 @@ void dns_cache_invalidate(dns_cache_preinvalid_callback callback, int ttl_pre);
int dns_cache_get_ttl(struct dns_cache *dns_cache);
struct dns_cache_data *dns_cache_get_data(struct dns_cache *dns_cache);
void dns_cache_destroy(void);
#ifdef __cpluscplus