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9#ifndef _LINUX_SUNRPC_CLNT_H
10#define _LINUX_SUNRPC_CLNT_H
11
12#include <linux/socket.h>
13#include <linux/in.h>
14#include <linux/in6.h>
15
16#include <linux/sunrpc/msg_prot.h>
17#include <linux/sunrpc/sched.h>
18#include <linux/sunrpc/xprt.h>
19#include <linux/sunrpc/auth.h>
20#include <linux/sunrpc/stats.h>
21#include <linux/sunrpc/xdr.h>
22#include <linux/sunrpc/timer.h>
23#include <asm/signal.h>
24#include <linux/path.h>
25#include <net/ipv6.h>
26
27struct rpc_inode;
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30
31
32struct rpc_clnt {
33 atomic_t cl_count;
34 struct list_head cl_clients;
35 struct list_head cl_tasks;
36 spinlock_t cl_lock;
37 struct rpc_xprt * cl_xprt;
38 struct rpc_procinfo * cl_procinfo;
39 u32 cl_prog,
40 cl_vers,
41 cl_maxproc;
42
43 char * cl_server;
44 char * cl_protname;
45 struct rpc_auth * cl_auth;
46 struct rpc_stat * cl_stats;
47 struct rpc_iostats * cl_metrics;
48
49 unsigned int cl_softrtry : 1,
50 cl_discrtry : 1,
51 cl_autobind : 1,
52 cl_chatty : 1;
53
54 struct rpc_rtt * cl_rtt;
55 const struct rpc_timeout *cl_timeout;
56
57 int cl_nodelen;
58 char cl_nodename[UNX_MAXNODENAME];
59 struct path cl_path;
60 struct rpc_clnt * cl_parent;
61 struct rpc_rtt cl_rtt_default;
62 struct rpc_timeout cl_timeout_default;
63 struct rpc_program * cl_program;
64 char cl_inline_name[32];
65 char *cl_principal;
66};
67
68
69
70
71#define RPC_MAXVERSION 4
72struct rpc_program {
73 char * name;
74 u32 number;
75 unsigned int nrvers;
76 struct rpc_version ** version;
77 struct rpc_stat * stats;
78 char * pipe_dir_name;
79};
80
81struct rpc_version {
82 u32 number;
83 unsigned int nrprocs;
84 struct rpc_procinfo * procs;
85};
86
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89
90struct rpc_procinfo {
91 u32 p_proc;
92 kxdreproc_t p_encode;
93 kxdrdproc_t p_decode;
94 unsigned int p_arglen;
95 unsigned int p_replen;
96 unsigned int p_count;
97 unsigned int p_timer;
98 u32 p_statidx;
99 char * p_name;
100};
101
102#ifdef __KERNEL__
103
104struct rpc_create_args {
105 struct net *net;
106 int protocol;
107 struct sockaddr *address;
108 size_t addrsize;
109 struct sockaddr *saddress;
110 const struct rpc_timeout *timeout;
111 char *servername;
112 struct rpc_program *program;
113 u32 prognumber;
114 u32 version;
115 rpc_authflavor_t authflavor;
116 unsigned long flags;
117 char *client_name;
118 struct svc_xprt *bc_xprt;
119};
120
121
122#define RPC_CLNT_CREATE_HARDRTRY (1UL << 0)
123#define RPC_CLNT_CREATE_AUTOBIND (1UL << 2)
124#define RPC_CLNT_CREATE_NONPRIVPORT (1UL << 3)
125#define RPC_CLNT_CREATE_NOPING (1UL << 4)
126#define RPC_CLNT_CREATE_DISCRTRY (1UL << 5)
127#define RPC_CLNT_CREATE_QUIET (1UL << 6)
128
129struct rpc_clnt *rpc_create(struct rpc_create_args *args);
130struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *,
131 struct rpc_program *, u32);
132struct rpc_clnt *rpc_clone_client(struct rpc_clnt *);
133void rpc_shutdown_client(struct rpc_clnt *);
134void rpc_release_client(struct rpc_clnt *);
135void rpc_task_release_client(struct rpc_task *);
136
137int rpcb_register(u32, u32, int, unsigned short);
138int rpcb_v4_register(const u32 program, const u32 version,
139 const struct sockaddr *address,
140 const char *netid);
141void rpcb_getport_async(struct rpc_task *);
142
143void rpc_call_start(struct rpc_task *);
144int rpc_call_async(struct rpc_clnt *clnt,
145 const struct rpc_message *msg, int flags,
146 const struct rpc_call_ops *tk_ops,
147 void *calldata);
148int rpc_call_sync(struct rpc_clnt *clnt,
149 const struct rpc_message *msg, int flags);
150struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred,
151 int flags);
152int rpc_restart_call_prepare(struct rpc_task *);
153int rpc_restart_call(struct rpc_task *);
154void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int);
155size_t rpc_max_payload(struct rpc_clnt *);
156void rpc_force_rebind(struct rpc_clnt *);
157size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t);
158const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
159
160size_t rpc_ntop(const struct sockaddr *, char *, const size_t);
161size_t rpc_pton(const char *, const size_t,
162 struct sockaddr *, const size_t);
163char * rpc_sockaddr2uaddr(const struct sockaddr *);
164size_t rpc_uaddr2sockaddr(const char *, const size_t,
165 struct sockaddr *, const size_t);
166
167static inline unsigned short rpc_get_port(const struct sockaddr *sap)
168{
169 switch (sap->sa_family) {
170 case AF_INET:
171 return ntohs(((struct sockaddr_in *)sap)->sin_port);
172 case AF_INET6:
173 return ntohs(((struct sockaddr_in6 *)sap)->sin6_port);
174 }
175 return 0;
176}
177
178static inline void rpc_set_port(struct sockaddr *sap,
179 const unsigned short port)
180{
181 switch (sap->sa_family) {
182 case AF_INET:
183 ((struct sockaddr_in *)sap)->sin_port = htons(port);
184 break;
185 case AF_INET6:
186 ((struct sockaddr_in6 *)sap)->sin6_port = htons(port);
187 break;
188 }
189}
190
191#define IPV6_SCOPE_DELIMITER '%'
192#define IPV6_SCOPE_ID_LEN sizeof("%nnnnnnnnnn")
193
194static inline bool __rpc_cmp_addr4(const struct sockaddr *sap1,
195 const struct sockaddr *sap2)
196{
197 const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sap1;
198 const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sap2;
199
200 return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr;
201}
202
203static inline bool __rpc_copy_addr4(struct sockaddr *dst,
204 const struct sockaddr *src)
205{
206 const struct sockaddr_in *ssin = (struct sockaddr_in *) src;
207 struct sockaddr_in *dsin = (struct sockaddr_in *) dst;
208
209 dsin->sin_family = ssin->sin_family;
210 dsin->sin_addr.s_addr = ssin->sin_addr.s_addr;
211 return true;
212}
213
214#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
215static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,
216 const struct sockaddr *sap2)
217{
218 const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sap1;
219 const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2;
220 return ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr);
221}
222
223static inline bool __rpc_copy_addr6(struct sockaddr *dst,
224 const struct sockaddr *src)
225{
226 const struct sockaddr_in6 *ssin6 = (const struct sockaddr_in6 *) src;
227 struct sockaddr_in6 *dsin6 = (struct sockaddr_in6 *) dst;
228
229 dsin6->sin6_family = ssin6->sin6_family;
230 ipv6_addr_copy(&dsin6->sin6_addr, &ssin6->sin6_addr);
231 return true;
232}
233#else
234static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,
235 const struct sockaddr *sap2)
236{
237 return false;
238}
239
240static inline bool __rpc_copy_addr6(struct sockaddr *dst,
241 const struct sockaddr *src)
242{
243 return false;
244}
245#endif
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255static inline bool rpc_cmp_addr(const struct sockaddr *sap1,
256 const struct sockaddr *sap2)
257{
258 if (sap1->sa_family == sap2->sa_family) {
259 switch (sap1->sa_family) {
260 case AF_INET:
261 return __rpc_cmp_addr4(sap1, sap2);
262 case AF_INET6:
263 return __rpc_cmp_addr6(sap1, sap2);
264 }
265 }
266 return false;
267}
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279static inline bool rpc_copy_addr(struct sockaddr *dst,
280 const struct sockaddr *src)
281{
282 switch (src->sa_family) {
283 case AF_INET:
284 return __rpc_copy_addr4(dst, src);
285 case AF_INET6:
286 return __rpc_copy_addr6(dst, src);
287 }
288 return false;
289}
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298static inline u32 rpc_get_scope_id(const struct sockaddr *sa)
299{
300 if (sa->sa_family != AF_INET6)
301 return 0;
302
303 return ((struct sockaddr_in6 *) sa)->sin6_scope_id;
304}
305
306#endif
307#endif
308