/include/linux/sunrpc/svc_xprt.h
https://bitbucket.org/thekraven/iscream_thunderc-2.6.35 · C++ Header · 169 lines · 143 code · 19 blank · 7 comment · 3 complexity · c9ecbadd035b1608ac3cfb72bf712e39 MD5 · raw file
- /*
- * linux/include/linux/sunrpc/svc_xprt.h
- *
- * RPC server transport I/O
- */
- #ifndef SUNRPC_SVC_XPRT_H
- #define SUNRPC_SVC_XPRT_H
- #include <linux/sunrpc/svc.h>
- #include <linux/module.h>
- struct svc_xprt_ops {
- struct svc_xprt *(*xpo_create)(struct svc_serv *,
- struct sockaddr *, int,
- int);
- struct svc_xprt *(*xpo_accept)(struct svc_xprt *);
- int (*xpo_has_wspace)(struct svc_xprt *);
- int (*xpo_recvfrom)(struct svc_rqst *);
- void (*xpo_prep_reply_hdr)(struct svc_rqst *);
- int (*xpo_sendto)(struct svc_rqst *);
- void (*xpo_release_rqst)(struct svc_rqst *);
- void (*xpo_detach)(struct svc_xprt *);
- void (*xpo_free)(struct svc_xprt *);
- };
- struct svc_xprt_class {
- const char *xcl_name;
- struct module *xcl_owner;
- struct svc_xprt_ops *xcl_ops;
- struct list_head xcl_list;
- u32 xcl_max_payload;
- };
- struct svc_xprt {
- struct svc_xprt_class *xpt_class;
- struct svc_xprt_ops *xpt_ops;
- struct kref xpt_ref;
- struct list_head xpt_list;
- struct list_head xpt_ready;
- unsigned long xpt_flags;
- #define XPT_BUSY 0 /* enqueued/receiving */
- #define XPT_CONN 1 /* conn pending */
- #define XPT_CLOSE 2 /* dead or dying */
- #define XPT_DATA 3 /* data pending */
- #define XPT_TEMP 4 /* connected transport */
- #define XPT_DEAD 6 /* transport closed */
- #define XPT_CHNGBUF 7 /* need to change snd/rcv buf sizes */
- #define XPT_DEFERRED 8 /* deferred request pending */
- #define XPT_OLD 9 /* used for xprt aging mark+sweep */
- #define XPT_DETACHED 10 /* detached from tempsocks list */
- #define XPT_LISTENER 11 /* listening endpoint */
- #define XPT_CACHE_AUTH 12 /* cache auth info */
- struct svc_pool *xpt_pool; /* current pool iff queued */
- struct svc_serv *xpt_server; /* service for transport */
- atomic_t xpt_reserved; /* space on outq that is rsvd */
- struct mutex xpt_mutex; /* to serialize sending data */
- spinlock_t xpt_lock; /* protects sk_deferred
- * and xpt_auth_cache */
- void *xpt_auth_cache;/* auth cache */
- struct list_head xpt_deferred; /* deferred requests that need
- * to be revisted */
- struct sockaddr_storage xpt_local; /* local address */
- size_t xpt_locallen; /* length of address */
- struct sockaddr_storage xpt_remote; /* remote peer's address */
- size_t xpt_remotelen; /* length of address */
- struct rpc_wait_queue xpt_bc_pending; /* backchannel wait queue */
- };
- int svc_reg_xprt_class(struct svc_xprt_class *);
- void svc_unreg_xprt_class(struct svc_xprt_class *);
- void svc_xprt_init(struct svc_xprt_class *, struct svc_xprt *,
- struct svc_serv *);
- int svc_create_xprt(struct svc_serv *, const char *, const int,
- const unsigned short, int);
- void svc_xprt_enqueue(struct svc_xprt *xprt);
- void svc_xprt_received(struct svc_xprt *);
- void svc_xprt_put(struct svc_xprt *xprt);
- void svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt);
- void svc_close_xprt(struct svc_xprt *xprt);
- void svc_delete_xprt(struct svc_xprt *xprt);
- int svc_port_is_privileged(struct sockaddr *sin);
- int svc_print_xprts(char *buf, int maxlen);
- struct svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
- const sa_family_t af, const unsigned short port);
- int svc_xprt_names(struct svc_serv *serv, char *buf, const int buflen);
- static inline void svc_xprt_get(struct svc_xprt *xprt)
- {
- kref_get(&xprt->xpt_ref);
- }
- static inline void svc_xprt_set_local(struct svc_xprt *xprt,
- const struct sockaddr *sa,
- const size_t salen)
- {
- memcpy(&xprt->xpt_local, sa, salen);
- xprt->xpt_locallen = salen;
- }
- static inline void svc_xprt_set_remote(struct svc_xprt *xprt,
- const struct sockaddr *sa,
- const size_t salen)
- {
- memcpy(&xprt->xpt_remote, sa, salen);
- xprt->xpt_remotelen = salen;
- }
- static inline unsigned short svc_addr_port(const struct sockaddr *sa)
- {
- const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
- const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
- switch (sa->sa_family) {
- case AF_INET:
- return ntohs(sin->sin_port);
- case AF_INET6:
- return ntohs(sin6->sin6_port);
- }
- return 0;
- }
- static inline size_t svc_addr_len(const struct sockaddr *sa)
- {
- switch (sa->sa_family) {
- case AF_INET:
- return sizeof(struct sockaddr_in);
- case AF_INET6:
- return sizeof(struct sockaddr_in6);
- }
- return 0;
- }
- static inline unsigned short svc_xprt_local_port(const struct svc_xprt *xprt)
- {
- return svc_addr_port((const struct sockaddr *)&xprt->xpt_local);
- }
- static inline unsigned short svc_xprt_remote_port(const struct svc_xprt *xprt)
- {
- return svc_addr_port((const struct sockaddr *)&xprt->xpt_remote);
- }
- static inline char *__svc_print_addr(const struct sockaddr *addr,
- char *buf, const size_t len)
- {
- const struct sockaddr_in *sin = (const struct sockaddr_in *)addr;
- const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)addr;
- switch (addr->sa_family) {
- case AF_INET:
- snprintf(buf, len, "%pI4, port=%u", &sin->sin_addr,
- ntohs(sin->sin_port));
- break;
- case AF_INET6:
- snprintf(buf, len, "%pI6, port=%u",
- &sin6->sin6_addr,
- ntohs(sin6->sin6_port));
- break;
- default:
- snprintf(buf, len, "unknown address type: %d", addr->sa_family);
- break;
- }
- return buf;
- }
- #endif /* SUNRPC_SVC_XPRT_H */