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e18e157bb5
There is now enough infrastructure in place to combine the stream record marker into the biovec array used to send each outgoing RPC message on TCP. The whole message can be more efficiently sent with a single call to sock_sendmsg() using a bio_vec iterator. Note that this also helps with RPC-with-TLS: the TLS implementation can now clearly see where the upper layer message boundaries are. Before, it would send each component of the xdr_buf (record marker, head, page payload, tail) in separate TLS records. Suggested-by: David Howells <dhowells@redhat.com> Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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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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#include <linux/sunrpc/svc_xprt.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 svc_xprt sk_xprt;
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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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/* 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 *);
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void (*sk_owspace)(struct sock *);
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/* private TCP part */
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/* On-the-wire fragment header: */
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__be32 sk_marker;
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/* As we receive a record, this includes the length received so
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* far (including the fragment header): */
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u32 sk_tcplen;
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/* Total length of the data (not including fragment headers)
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* received so far in the fragments making up this rpc: */
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u32 sk_datalen;
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/* Number of queued send requests */
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atomic_t sk_sendqlen;
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struct page_frag_cache sk_frag_cache;
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struct completion sk_handshake_done;
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struct page * sk_pages[RPCSVC_MAXPAGES]; /* received data */
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};
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static inline u32 svc_sock_reclen(struct svc_sock *svsk)
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{
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return be32_to_cpu(svsk->sk_marker) & RPC_FRAGMENT_SIZE_MASK;
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}
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static inline u32 svc_sock_final_rec(struct svc_sock *svsk)
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{
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return be32_to_cpu(svsk->sk_marker) & RPC_LAST_STREAM_FRAGMENT;
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}
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/*
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* Function prototypes.
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*/
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void svc_close_net(struct svc_serv *, struct net *);
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int svc_recv(struct svc_rqst *, long);
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void svc_send(struct svc_rqst *rqstp);
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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_addsock(struct svc_serv *serv, struct net *net,
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const int fd, char *name_return, const size_t len,
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const struct cred *cred);
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void svc_init_xprt_sock(void);
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void svc_cleanup_xprt_sock(void);
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struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot);
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void svc_sock_destroy(struct svc_xprt *);
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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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