cda1fd4abd
When the last thread of nfsd exits, it shuts down all related sockets. It currently uses svc_close_socket to do this, but that only is immediately effective if the socket is not SK_BUSY. If the socket is busy - i.e. if a request has arrived that has not yet been processes - svc_close_socket is not effective and the shutdown process spins. So create a new svc_force_close_socket which removes the SK_BUSY flag is set and then calls svc_close_socket. Also change some open-codes loops in svc_destroy to use list_for_each_entry_safe. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/*
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* linux/include/linux/sunrpc/svcsock.h
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*
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* RPC server socket I/O.
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*
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef SUNRPC_SVCSOCK_H
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#define SUNRPC_SVCSOCK_H
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#include <linux/sunrpc/svc.h>
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/*
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* RPC server socket.
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*/
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struct svc_sock {
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struct list_head sk_ready; /* list of ready sockets */
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struct list_head sk_list; /* list of all sockets */
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struct socket * sk_sock; /* berkeley socket layer */
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struct sock * sk_sk; /* INET layer */
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struct svc_pool * sk_pool; /* current pool iff queued */
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struct svc_serv * sk_server; /* service for this socket */
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atomic_t sk_inuse; /* use count */
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unsigned long sk_flags;
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#define SK_BUSY 0 /* enqueued/receiving */
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#define SK_CONN 1 /* conn pending */
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#define SK_CLOSE 2 /* dead or dying */
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#define SK_DATA 3 /* data pending */
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#define SK_TEMP 4 /* temp (TCP) socket */
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#define SK_DEAD 6 /* socket closed */
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#define SK_CHNGBUF 7 /* need to change snd/rcv buffer sizes */
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#define SK_DEFERRED 8 /* request on sk_deferred */
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#define SK_OLD 9 /* used for temp socket aging mark+sweep */
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#define SK_DETACHED 10 /* detached from tempsocks list */
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atomic_t sk_reserved; /* space on outq that is reserved */
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spinlock_t sk_defer_lock; /* protects sk_deferred */
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struct list_head sk_deferred; /* deferred requests that need to
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* be revisted */
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struct mutex sk_mutex; /* to serialize sending data */
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int (*sk_recvfrom)(struct svc_rqst *rqstp);
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int (*sk_sendto)(struct svc_rqst *rqstp);
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/* We keep the old state_change and data_ready CB's here */
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void (*sk_ostate)(struct sock *);
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void (*sk_odata)(struct sock *, int bytes);
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void (*sk_owspace)(struct sock *);
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/* private TCP part */
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int sk_reclen; /* length of record */
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int sk_tcplen; /* current read length */
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time_t sk_lastrecv; /* time of last received request */
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/* cache of various info for TCP sockets */
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void *sk_info_authunix;
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struct sockaddr_storage sk_remote; /* remote peer's address */
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int sk_remotelen; /* length of address */
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};
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/*
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* Function prototypes.
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*/
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int svc_makesock(struct svc_serv *, int, unsigned short, int flags);
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void svc_force_close_socket(struct svc_sock *);
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int svc_recv(struct svc_rqst *, long);
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int svc_send(struct svc_rqst *);
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void svc_drop(struct svc_rqst *);
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void svc_sock_update_bufs(struct svc_serv *serv);
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int svc_sock_names(char *buf, struct svc_serv *serv, char *toclose);
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int svc_addsock(struct svc_serv *serv,
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int fd,
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char *name_return,
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int *proto);
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/*
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* svc_makesock socket characteristics
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*/
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#define SVC_SOCK_DEFAULTS (0U)
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#define SVC_SOCK_ANONYMOUS (1U << 0) /* don't register with pmap */
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#define SVC_SOCK_TEMPORARY (1U << 1) /* flag socket as temporary */
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#endif /* SUNRPC_SVCSOCK_H */
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