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/*
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* linux/include/linux/sunrpc/svc_xprt.h
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*
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* RPC server transport I/O
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*/
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#ifndef SUNRPC_SVC_XPRT_H
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#define SUNRPC_SVC_XPRT_H
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#include <linux/sunrpc/svc.h>
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#include <linux/module.h>
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struct svc_xprt_ops {
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struct svc_xprt *(*xpo_create)(struct svc_serv *,
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struct sockaddr *, int,
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int);
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struct svc_xprt *(*xpo_accept)(struct svc_xprt *);
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int (*xpo_has_wspace)(struct svc_xprt *);
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int (*xpo_recvfrom)(struct svc_rqst *);
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void (*xpo_prep_reply_hdr)(struct svc_rqst *);
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int (*xpo_sendto)(struct svc_rqst *);
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void (*xpo_release_rqst)(struct svc_rqst *);
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void (*xpo_detach)(struct svc_xprt *);
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void (*xpo_free)(struct svc_xprt *);
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};
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struct svc_xprt_class {
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const char *xcl_name;
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struct module *xcl_owner;
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struct svc_xprt_ops *xcl_ops;
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struct list_head xcl_list;
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u32 xcl_max_payload;
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};
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struct svc_xprt {
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struct svc_xprt_class *xpt_class;
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struct svc_xprt_ops *xpt_ops;
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struct kref xpt_ref;
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struct list_head xpt_list;
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struct list_head xpt_ready;
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unsigned long xpt_flags;
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#define XPT_BUSY 0 /* enqueued/receiving */
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#define XPT_CONN 1 /* conn pending */
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#define XPT_CLOSE 2 /* dead or dying */
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#define XPT_DATA 3 /* data pending */
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#define XPT_TEMP 4 /* connected transport */
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#define XPT_DEAD 6 /* transport closed */
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#define XPT_CHNGBUF 7 /* need to change snd/rcv buf sizes */
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#define XPT_DEFERRED 8 /* deferred request pending */
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#define XPT_OLD 9 /* used for xprt aging mark+sweep */
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#define XPT_DETACHED 10 /* detached from tempsocks list */
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#define XPT_LISTENER 11 /* listening endpoint */
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#define XPT_CACHE_AUTH 12 /* cache auth info */
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struct svc_pool *xpt_pool; /* current pool iff queued */
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struct svc_serv *xpt_server; /* service for transport */
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atomic_t xpt_reserved; /* space on outq that is rsvd */
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struct mutex xpt_mutex; /* to serialize sending data */
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spinlock_t xpt_lock; /* protects sk_deferred
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* and xpt_auth_cache */
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void *xpt_auth_cache;/* auth cache */
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struct list_head xpt_deferred; /* deferred requests that need
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* to be revisted */
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};
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int svc_reg_xprt_class(struct svc_xprt_class *);
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void svc_unreg_xprt_class(struct svc_xprt_class *);
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void svc_xprt_init(struct svc_xprt_class *, struct svc_xprt *,
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struct svc_serv *);
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int svc_create_xprt(struct svc_serv *, char *, unsigned short, int);
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void svc_xprt_received(struct svc_xprt *);
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void svc_xprt_put(struct svc_xprt *xprt);
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static inline void svc_xprt_get(struct svc_xprt *xprt)
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{
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kref_get(&xprt->xpt_ref);
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}
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#endif /* SUNRPC_SVC_XPRT_H */
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