diff options
Diffstat (limited to 'freebsd/sys/netinet/libalias/alias_mod.h')
| -rw-r--r-- | freebsd/sys/netinet/libalias/alias_mod.h | 138 |
1 files changed, 64 insertions, 74 deletions
diff --git a/freebsd/sys/netinet/libalias/alias_mod.h b/freebsd/sys/netinet/libalias/alias_mod.h index 727df8e6..fd020c46 100644 --- a/freebsd/sys/netinet/libalias/alias_mod.h +++ b/freebsd/sys/netinet/libalias/alias_mod.h @@ -54,102 +54,92 @@ MALLOC_DECLARE(M_ALIAS); #endif #endif -/* Protocol handlers struct & function. */ +/* Packet flow direction flags. */ +#define IN 0x0001 +#define OUT 0x0002 +#define NODIR 0x4000 -/* Packet flow direction. */ -#define IN 1 -#define OUT 2 +/* Working protocol flags. */ +#define IP 0x01 +#define TCP 0x02 +#define UDP 0x04 -/* Working protocol. */ -#define IP 1 -#define TCP 2 -#define UDP 4 - -/* +/* * Data passed to protocol handler module, it must be filled * right before calling find_handler() to determine which * module is elegible to be called. */ +struct alias_data { + struct alias_link *lnk; + struct in_addr *oaddr; /* Original address. */ + struct in_addr *aaddr; /* Alias address. */ + uint16_t *aport; /* Alias port. */ + uint16_t *sport, *dport; /* Source & destination port */ + uint16_t maxpktsize; /* Max packet size. */ +}; -struct alias_data { - struct alias_link *lnk; - struct in_addr *oaddr; /* Original address. */ - struct in_addr *aaddr; /* Alias address. */ - uint16_t *aport; /* Alias port. */ - uint16_t *sport, *dport; /* Source & destination port */ - uint16_t maxpktsize; /* Max packet size. */ -}; - -/* +/* * This structure contains all the information necessary to make * a protocol handler correctly work. */ - struct proto_handler { - u_int pri; /* Handler priority. */ - int16_t dir; /* Flow direction. */ - uint8_t proto; /* Working protocol. */ - int (*fingerprint)(struct libalias *, /* Fingerprint * function. */ - struct alias_data *); - int (*protohandler)(struct libalias *, /* Aliasing * function. */ - struct ip *, struct alias_data *); - LIST_ENTRY(proto_handler) entries; + u_int pri; /* Handler priority. */ + int16_t dir; /* Flow direction. */ + uint8_t proto; /* Working protocol. */ + /* Fingerprint * function. */ + int (*fingerprint)(struct libalias *, struct alias_data *); + /* Aliasing * function. */ + int (*protohandler)(struct libalias *, struct ip *, + struct alias_data *); + TAILQ_ENTRY(proto_handler) link; }; +/* End of handlers. */ +#define EOH .dir = NODIR -/* +/* Functions used with protocol handlers. */ +int LibAliasAttachHandlers(struct proto_handler *); +int LibAliasDetachHandlers(struct proto_handler *); +int find_handler(int8_t, int8_t, struct libalias *, struct ip *, + struct alias_data *); +struct proto_handler *first_handler(void); + +#ifndef _KERNEL +/* * Used only in userland when libalias needs to keep track of all * module loaded. In kernel land (kld mode) we don't need to care * care about libalias modules cause it's kld to do it for us. */ - -#define DLL_LEN 32 -struct dll { - char name[DLL_LEN]; /* Name of module. */ - void *handle; /* - * Ptr to shared obj obtained through - * dlopen() - use this ptr to get access - * to any symbols from a loaded module - * via dlsym(). - */ - SLIST_ENTRY(dll) next; +#define DLL_LEN 32 +struct dll { + char name[DLL_LEN]; /* Name of module. */ + void *handle; /* + * Ptr to shared obj obtained through + * dlopen() - use this ptr to get access + * to any symbols from a loaded module + * via dlsym(). + */ + SLIST_ENTRY(dll) next; }; -/* Functions used with protocol handlers. */ - -void handler_chain_init(void); -void handler_chain_destroy(void); -int LibAliasAttachHandlers(struct proto_handler *); -int LibAliasDetachHandlers(struct proto_handler *); -int detach_handler(struct proto_handler *); -int find_handler(int8_t, int8_t, struct libalias *, - struct ip *, struct alias_data *); -struct proto_handler *first_handler(void); - /* Functions used with dll module. */ +void dll_chain_init(void); +void dll_chain_destroy(void); +int attach_dll(struct dll *); +void *detach_dll(char *); +struct dll *walk_dll_chain(void); -void dll_chain_init(void); -void dll_chain_destroy(void); -int attach_dll(struct dll *); -void *detach_dll(char *); -struct dll *walk_dll_chain(void); - -/* End of handlers. */ -#define EOH -1 - -/* +/* * Some defines borrowed from sys/module.h used to compile a kld * in userland as a shared lib. */ - -#ifndef _KERNEL typedef enum modeventtype { - MOD_LOAD, - MOD_UNLOAD, - MOD_SHUTDOWN, - MOD_QUIESCE + MOD_LOAD, + MOD_UNLOAD, + MOD_SHUTDOWN, + MOD_QUIESCE } modeventtype_t; - + typedef struct module *module_t; typedef int (*modeventhand_t)(module_t, int /* modeventtype_t */, void *); @@ -157,10 +147,10 @@ typedef int (*modeventhand_t)(module_t, int /* modeventtype_t */, void *); * Struct for registering modules statically via SYSINIT. */ typedef struct moduledata { - const char *name; /* module name */ - modeventhand_t evhand; /* event handler */ - void *priv; /* extra data */ + const char *name; /* module name */ + modeventhand_t evhand; /* event handler */ + void *priv; /* extra data */ } moduledata_t; -#endif +#endif /* !_KERNEL */ -#endif /* !_ALIAS_MOD_H_ */ +#endif /* !_ALIAS_MOD_H_ */ |