| /* |
| * 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 */ |
| }; |
| |
| 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 *, char *, 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 *, char *, int, int); |
| |
| 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, |
| struct sockaddr *sa, int salen) |
| { |
| memcpy(&xprt->xpt_local, sa, salen); |
| xprt->xpt_locallen = salen; |
| } |
| static inline void svc_xprt_set_remote(struct svc_xprt *xprt, |
| struct sockaddr *sa, int salen) |
| { |
| memcpy(&xprt->xpt_remote, sa, salen); |
| xprt->xpt_remotelen = salen; |
| } |
| static inline unsigned short svc_addr_port(struct sockaddr *sa) |
| { |
| unsigned short ret = 0; |
| switch (sa->sa_family) { |
| case AF_INET: |
| ret = ntohs(((struct sockaddr_in *)sa)->sin_port); |
| break; |
| case AF_INET6: |
| ret = ntohs(((struct sockaddr_in6 *)sa)->sin6_port); |
| break; |
| } |
| return ret; |
| } |
| |
| static inline size_t svc_addr_len(struct sockaddr *sa) |
| { |
| switch (sa->sa_family) { |
| case AF_INET: |
| return sizeof(struct sockaddr_in); |
| case AF_INET6: |
| return sizeof(struct sockaddr_in6); |
| } |
| return -EAFNOSUPPORT; |
| } |
| |
| static inline unsigned short svc_xprt_local_port(struct svc_xprt *xprt) |
| { |
| return svc_addr_port((struct sockaddr *)&xprt->xpt_local); |
| } |
| |
| static inline unsigned short svc_xprt_remote_port(struct svc_xprt *xprt) |
| { |
| return svc_addr_port((struct sockaddr *)&xprt->xpt_remote); |
| } |
| |
| static inline char *__svc_print_addr(struct sockaddr *addr, |
| char *buf, size_t len) |
| { |
| switch (addr->sa_family) { |
| case AF_INET: |
| snprintf(buf, len, "%u.%u.%u.%u, port=%u", |
| NIPQUAD(((struct sockaddr_in *) addr)->sin_addr), |
| ntohs(((struct sockaddr_in *) addr)->sin_port)); |
| break; |
| |
| case AF_INET6: |
| snprintf(buf, len, "%x:%x:%x:%x:%x:%x:%x:%x, port=%u", |
| NIP6(((struct sockaddr_in6 *) addr)->sin6_addr), |
| ntohs(((struct sockaddr_in6 *) addr)->sin6_port)); |
| break; |
| |
| default: |
| snprintf(buf, len, "unknown address type: %d", addr->sa_family); |
| break; |
| } |
| return buf; |
| } |
| #endif /* SUNRPC_SVC_XPRT_H */ |