1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * linux/include/linux/sunrpc/svcsock.h |
4 | * |
5 | * RPC server socket I/O. |
6 | * |
7 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> |
8 | */ |
9 | |
10 | #ifndef SUNRPC_SVCSOCK_H |
11 | #define SUNRPC_SVCSOCK_H |
12 | |
13 | #include <linux/sunrpc/svc.h> |
14 | #include <linux/sunrpc/svc_xprt.h> |
15 | |
16 | /* |
17 | * RPC server socket. |
18 | */ |
19 | struct svc_sock { |
20 | struct svc_xprt sk_xprt; |
21 | struct socket * sk_sock; /* berkeley socket layer */ |
22 | struct sock * sk_sk; /* INET layer */ |
23 | |
24 | /* We keep the old state_change and data_ready CB's here */ |
25 | void (*sk_ostate)(struct sock *); |
26 | void (*sk_odata)(struct sock *); |
27 | void (*sk_owspace)(struct sock *); |
28 | |
29 | /* private TCP part */ |
30 | /* On-the-wire fragment header: */ |
31 | __be32 sk_marker; |
32 | /* As we receive a record, this includes the length received so |
33 | * far (including the fragment header): */ |
34 | u32 sk_tcplen; |
35 | /* Total length of the data (not including fragment headers) |
36 | * received so far in the fragments making up this rpc: */ |
37 | u32 sk_datalen; |
38 | |
39 | struct page_frag_cache sk_frag_cache; |
40 | |
41 | struct completion sk_handshake_done; |
42 | |
43 | struct page * sk_pages[RPCSVC_MAXPAGES]; /* received data */ |
44 | }; |
45 | |
46 | static inline u32 svc_sock_reclen(struct svc_sock *svsk) |
47 | { |
48 | return be32_to_cpu(svsk->sk_marker) & RPC_FRAGMENT_SIZE_MASK; |
49 | } |
50 | |
51 | static inline u32 svc_sock_final_rec(struct svc_sock *svsk) |
52 | { |
53 | return be32_to_cpu(svsk->sk_marker) & RPC_LAST_STREAM_FRAGMENT; |
54 | } |
55 | |
56 | /* |
57 | * Function prototypes. |
58 | */ |
59 | void svc_recv(struct svc_rqst *rqstp); |
60 | void svc_send(struct svc_rqst *rqstp); |
61 | void svc_drop(struct svc_rqst *); |
62 | void svc_sock_update_bufs(struct svc_serv *serv); |
63 | int svc_addsock(struct svc_serv *serv, struct net *net, |
64 | const int fd, char *name_return, const size_t len, |
65 | const struct cred *cred); |
66 | void svc_init_xprt_sock(void); |
67 | void svc_cleanup_xprt_sock(void); |
68 | |
69 | /* |
70 | * svc_makesock socket characteristics |
71 | */ |
72 | #define SVC_SOCK_DEFAULTS (0U) |
73 | #define SVC_SOCK_ANONYMOUS (1U << 0) /* don't register with pmap */ |
74 | #define SVC_SOCK_TEMPORARY (1U << 1) /* flag socket as temporary */ |
75 | |
76 | #endif /* SUNRPC_SVCSOCK_H */ |
77 | |