1 // SPDX-License-Identifier: GPL-2.0-or-later 1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* AFS Cache Manager Service 2 /* AFS Cache Manager Service
3 * 3 *
4 * Copyright (C) 2002 Red Hat, Inc. All Rights 4 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.c 5 * Written by David Howells (dhowells@redhat.com)
6 */ 6 */
7 7
8 #include <linux/module.h> 8 #include <linux/module.h>
9 #include <linux/init.h> 9 #include <linux/init.h>
10 #include <linux/slab.h> 10 #include <linux/slab.h>
11 #include <linux/sched.h> 11 #include <linux/sched.h>
12 #include <linux/ip.h> 12 #include <linux/ip.h>
13 #include "internal.h" 13 #include "internal.h"
14 #include "afs_cm.h" 14 #include "afs_cm.h"
15 #include "protocol_yfs.h" 15 #include "protocol_yfs.h"
16 #define RXRPC_TRACE_ONLY_DEFINE_ENUMS <<
17 #include <trace/events/rxrpc.h> <<
18 16
19 static int afs_deliver_cb_init_call_back_state 17 static int afs_deliver_cb_init_call_back_state(struct afs_call *);
20 static int afs_deliver_cb_init_call_back_state 18 static int afs_deliver_cb_init_call_back_state3(struct afs_call *);
21 static int afs_deliver_cb_probe(struct afs_cal 19 static int afs_deliver_cb_probe(struct afs_call *);
22 static int afs_deliver_cb_callback(struct afs_ 20 static int afs_deliver_cb_callback(struct afs_call *);
23 static int afs_deliver_cb_probe_uuid(struct af 21 static int afs_deliver_cb_probe_uuid(struct afs_call *);
24 static int afs_deliver_cb_tell_me_about_yourse 22 static int afs_deliver_cb_tell_me_about_yourself(struct afs_call *);
25 static void afs_cm_destructor(struct afs_call 23 static void afs_cm_destructor(struct afs_call *);
26 static void SRXAFSCB_CallBack(struct work_stru 24 static void SRXAFSCB_CallBack(struct work_struct *);
27 static void SRXAFSCB_InitCallBackState(struct 25 static void SRXAFSCB_InitCallBackState(struct work_struct *);
28 static void SRXAFSCB_Probe(struct work_struct 26 static void SRXAFSCB_Probe(struct work_struct *);
29 static void SRXAFSCB_ProbeUuid(struct work_str 27 static void SRXAFSCB_ProbeUuid(struct work_struct *);
30 static void SRXAFSCB_TellMeAboutYourself(struc 28 static void SRXAFSCB_TellMeAboutYourself(struct work_struct *);
31 29
32 static int afs_deliver_yfs_cb_callback(struct 30 static int afs_deliver_yfs_cb_callback(struct afs_call *);
33 31
>> 32 #define CM_NAME(name) \
>> 33 char afs_SRXCB##name##_name[] __tracepoint_string = \
>> 34 "CB." #name
>> 35
34 /* 36 /*
35 * CB.CallBack operation type 37 * CB.CallBack operation type
36 */ 38 */
>> 39 static CM_NAME(CallBack);
37 static const struct afs_call_type afs_SRXCBCal 40 static const struct afs_call_type afs_SRXCBCallBack = {
38 .name = "CB.CallBack", !! 41 .name = afs_SRXCBCallBack_name,
39 .deliver = afs_deliver_cb_callb 42 .deliver = afs_deliver_cb_callback,
40 .destructor = afs_cm_destructor, 43 .destructor = afs_cm_destructor,
41 .work = SRXAFSCB_CallBack, 44 .work = SRXAFSCB_CallBack,
42 }; 45 };
43 46
44 /* 47 /*
45 * CB.InitCallBackState operation type 48 * CB.InitCallBackState operation type
46 */ 49 */
>> 50 static CM_NAME(InitCallBackState);
47 static const struct afs_call_type afs_SRXCBIni 51 static const struct afs_call_type afs_SRXCBInitCallBackState = {
48 .name = "CB.InitCallBackStat !! 52 .name = afs_SRXCBInitCallBackState_name,
49 .deliver = afs_deliver_cb_init_ 53 .deliver = afs_deliver_cb_init_call_back_state,
50 .destructor = afs_cm_destructor, 54 .destructor = afs_cm_destructor,
51 .work = SRXAFSCB_InitCallBac 55 .work = SRXAFSCB_InitCallBackState,
52 }; 56 };
53 57
54 /* 58 /*
55 * CB.InitCallBackState3 operation type 59 * CB.InitCallBackState3 operation type
56 */ 60 */
>> 61 static CM_NAME(InitCallBackState3);
57 static const struct afs_call_type afs_SRXCBIni 62 static const struct afs_call_type afs_SRXCBInitCallBackState3 = {
58 .name = "CB.InitCallBackStat !! 63 .name = afs_SRXCBInitCallBackState3_name,
59 .deliver = afs_deliver_cb_init_ 64 .deliver = afs_deliver_cb_init_call_back_state3,
60 .destructor = afs_cm_destructor, 65 .destructor = afs_cm_destructor,
61 .work = SRXAFSCB_InitCallBac 66 .work = SRXAFSCB_InitCallBackState,
62 }; 67 };
63 68
64 /* 69 /*
65 * CB.Probe operation type 70 * CB.Probe operation type
66 */ 71 */
>> 72 static CM_NAME(Probe);
67 static const struct afs_call_type afs_SRXCBPro 73 static const struct afs_call_type afs_SRXCBProbe = {
68 .name = "CB.Probe", !! 74 .name = afs_SRXCBProbe_name,
69 .deliver = afs_deliver_cb_probe 75 .deliver = afs_deliver_cb_probe,
70 .destructor = afs_cm_destructor, 76 .destructor = afs_cm_destructor,
71 .work = SRXAFSCB_Probe, 77 .work = SRXAFSCB_Probe,
72 }; 78 };
73 79
74 /* 80 /*
75 * CB.ProbeUuid operation type 81 * CB.ProbeUuid operation type
76 */ 82 */
>> 83 static CM_NAME(ProbeUuid);
77 static const struct afs_call_type afs_SRXCBPro 84 static const struct afs_call_type afs_SRXCBProbeUuid = {
78 .name = "CB.ProbeUuid", !! 85 .name = afs_SRXCBProbeUuid_name,
79 .deliver = afs_deliver_cb_probe 86 .deliver = afs_deliver_cb_probe_uuid,
80 .destructor = afs_cm_destructor, 87 .destructor = afs_cm_destructor,
81 .work = SRXAFSCB_ProbeUuid, 88 .work = SRXAFSCB_ProbeUuid,
82 }; 89 };
83 90
84 /* 91 /*
85 * CB.TellMeAboutYourself operation type 92 * CB.TellMeAboutYourself operation type
86 */ 93 */
>> 94 static CM_NAME(TellMeAboutYourself);
87 static const struct afs_call_type afs_SRXCBTel 95 static const struct afs_call_type afs_SRXCBTellMeAboutYourself = {
88 .name = "CB.TellMeAboutYours !! 96 .name = afs_SRXCBTellMeAboutYourself_name,
89 .deliver = afs_deliver_cb_tell_ 97 .deliver = afs_deliver_cb_tell_me_about_yourself,
90 .destructor = afs_cm_destructor, 98 .destructor = afs_cm_destructor,
91 .work = SRXAFSCB_TellMeAbout 99 .work = SRXAFSCB_TellMeAboutYourself,
92 }; 100 };
93 101
94 /* 102 /*
95 * YFS CB.CallBack operation type 103 * YFS CB.CallBack operation type
96 */ 104 */
>> 105 static CM_NAME(YFS_CallBack);
97 static const struct afs_call_type afs_SRXYFSCB 106 static const struct afs_call_type afs_SRXYFSCB_CallBack = {
98 .name = "YFSCB.CallBack", !! 107 .name = afs_SRXCBYFS_CallBack_name,
99 .deliver = afs_deliver_yfs_cb_c 108 .deliver = afs_deliver_yfs_cb_callback,
100 .destructor = afs_cm_destructor, 109 .destructor = afs_cm_destructor,
101 .work = SRXAFSCB_CallBack, 110 .work = SRXAFSCB_CallBack,
102 }; 111 };
103 112
104 /* 113 /*
105 * route an incoming cache manager call 114 * route an incoming cache manager call
106 * - return T if supported, F if not 115 * - return T if supported, F if not
107 */ 116 */
108 bool afs_cm_incoming_call(struct afs_call *cal 117 bool afs_cm_incoming_call(struct afs_call *call)
109 { 118 {
110 _enter("{%u, CB.OP %u}", call->service 119 _enter("{%u, CB.OP %u}", call->service_id, call->operation_ID);
111 120
>> 121 call->epoch = rxrpc_kernel_get_epoch(call->net->socket, call->rxcall);
>> 122
112 switch (call->operation_ID) { 123 switch (call->operation_ID) {
113 case CBCallBack: 124 case CBCallBack:
114 call->type = &afs_SRXCBCallBac 125 call->type = &afs_SRXCBCallBack;
115 return true; 126 return true;
116 case CBInitCallBackState: 127 case CBInitCallBackState:
117 call->type = &afs_SRXCBInitCal 128 call->type = &afs_SRXCBInitCallBackState;
118 return true; 129 return true;
119 case CBInitCallBackState3: 130 case CBInitCallBackState3:
120 call->type = &afs_SRXCBInitCal 131 call->type = &afs_SRXCBInitCallBackState3;
121 return true; 132 return true;
122 case CBProbe: 133 case CBProbe:
123 call->type = &afs_SRXCBProbe; 134 call->type = &afs_SRXCBProbe;
124 return true; 135 return true;
125 case CBProbeUuid: 136 case CBProbeUuid:
126 call->type = &afs_SRXCBProbeUu 137 call->type = &afs_SRXCBProbeUuid;
127 return true; 138 return true;
128 case CBTellMeAboutYourself: 139 case CBTellMeAboutYourself:
129 call->type = &afs_SRXCBTellMeA 140 call->type = &afs_SRXCBTellMeAboutYourself;
130 return true; 141 return true;
131 case YFSCBCallBack: 142 case YFSCBCallBack:
132 if (call->service_id != YFS_CM 143 if (call->service_id != YFS_CM_SERVICE)
133 return false; 144 return false;
134 call->type = &afs_SRXYFSCB_Cal 145 call->type = &afs_SRXYFSCB_CallBack;
135 return true; 146 return true;
136 default: 147 default:
137 return false; 148 return false;
138 } 149 }
139 } 150 }
140 151
141 /* 152 /*
>> 153 * Record a probe to the cache manager from a server.
>> 154 */
>> 155 static int afs_record_cm_probe(struct afs_call *call, struct afs_server *server)
>> 156 {
>> 157 _enter("");
>> 158
>> 159 if (test_bit(AFS_SERVER_FL_HAVE_EPOCH, &server->flags) &&
>> 160 !test_bit(AFS_SERVER_FL_PROBING, &server->flags)) {
>> 161 if (server->cm_epoch == call->epoch)
>> 162 return 0;
>> 163
>> 164 if (!server->probe.said_rebooted) {
>> 165 pr_notice("kAFS: FS rebooted %pU\n", &server->uuid);
>> 166 server->probe.said_rebooted = true;
>> 167 }
>> 168 }
>> 169
>> 170 spin_lock(&server->probe_lock);
>> 171
>> 172 if (!test_and_set_bit(AFS_SERVER_FL_HAVE_EPOCH, &server->flags)) {
>> 173 server->cm_epoch = call->epoch;
>> 174 server->probe.cm_epoch = call->epoch;
>> 175 goto out;
>> 176 }
>> 177
>> 178 if (server->probe.cm_probed &&
>> 179 call->epoch != server->probe.cm_epoch &&
>> 180 !server->probe.said_inconsistent) {
>> 181 pr_notice("kAFS: FS endpoints inconsistent %pU\n",
>> 182 &server->uuid);
>> 183 server->probe.said_inconsistent = true;
>> 184 }
>> 185
>> 186 if (!server->probe.cm_probed || call->epoch == server->cm_epoch)
>> 187 server->probe.cm_epoch = server->cm_epoch;
>> 188
>> 189 out:
>> 190 server->probe.cm_probed = true;
>> 191 spin_unlock(&server->probe_lock);
>> 192 return 0;
>> 193 }
>> 194
>> 195 /*
142 * Find the server record by peer address and 196 * Find the server record by peer address and record a probe to the cache
143 * manager from a server. 197 * manager from a server.
144 */ 198 */
145 static int afs_find_cm_server_by_peer(struct a 199 static int afs_find_cm_server_by_peer(struct afs_call *call)
146 { 200 {
147 struct sockaddr_rxrpc srx; 201 struct sockaddr_rxrpc srx;
148 struct afs_server *server; 202 struct afs_server *server;
149 struct rxrpc_peer *peer; <<
150 203
151 peer = rxrpc_kernel_get_call_peer(call !! 204 rxrpc_kernel_get_peer(call->net->socket, call->rxcall, &srx);
152 205
153 server = afs_find_server(call->net, pe !! 206 server = afs_find_server(call->net, &srx);
154 if (!server) { 207 if (!server) {
155 trace_afs_cm_no_server(call, & 208 trace_afs_cm_no_server(call, &srx);
156 return 0; 209 return 0;
157 } 210 }
158 211
159 call->server = server; 212 call->server = server;
160 return 0; !! 213 return afs_record_cm_probe(call, server);
161 } 214 }
162 215
163 /* 216 /*
164 * Find the server record by server UUID and r 217 * Find the server record by server UUID and record a probe to the cache
165 * manager from a server. 218 * manager from a server.
166 */ 219 */
167 static int afs_find_cm_server_by_uuid(struct a 220 static int afs_find_cm_server_by_uuid(struct afs_call *call,
168 struct a 221 struct afs_uuid *uuid)
169 { 222 {
170 struct afs_server *server; 223 struct afs_server *server;
171 224
172 rcu_read_lock(); 225 rcu_read_lock();
173 server = afs_find_server_by_uuid(call- 226 server = afs_find_server_by_uuid(call->net, call->request);
174 rcu_read_unlock(); 227 rcu_read_unlock();
175 if (!server) { 228 if (!server) {
176 trace_afs_cm_no_server_u(call, 229 trace_afs_cm_no_server_u(call, call->request);
177 return 0; 230 return 0;
178 } 231 }
179 232
180 call->server = server; 233 call->server = server;
181 return 0; !! 234 return afs_record_cm_probe(call, server);
182 } 235 }
183 236
184 /* 237 /*
185 * Clean up a cache manager call. 238 * Clean up a cache manager call.
186 */ 239 */
187 static void afs_cm_destructor(struct afs_call 240 static void afs_cm_destructor(struct afs_call *call)
188 { 241 {
189 kfree(call->buffer); 242 kfree(call->buffer);
190 call->buffer = NULL; 243 call->buffer = NULL;
191 } 244 }
192 245
193 /* 246 /*
194 * Abort a service call from within an action 247 * Abort a service call from within an action function.
195 */ 248 */
196 static void afs_abort_service_call(struct afs_ 249 static void afs_abort_service_call(struct afs_call *call, u32 abort_code, int error,
197 enum rxrpc_ !! 250 const char *why)
198 { 251 {
199 rxrpc_kernel_abort_call(call->net->soc 252 rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
200 abort_code, er 253 abort_code, error, why);
201 afs_set_call_complete(call, error, 0); 254 afs_set_call_complete(call, error, 0);
202 } 255 }
203 256
204 /* 257 /*
205 * The server supplied a list of callbacks tha 258 * The server supplied a list of callbacks that it wanted to break.
206 */ 259 */
207 static void SRXAFSCB_CallBack(struct work_stru 260 static void SRXAFSCB_CallBack(struct work_struct *work)
208 { 261 {
209 struct afs_call *call = container_of(w 262 struct afs_call *call = container_of(work, struct afs_call, work);
210 263
211 _enter(""); 264 _enter("");
212 265
213 /* We need to break the callbacks befo 266 /* We need to break the callbacks before sending the reply as the
214 * server holds up change visibility t 267 * server holds up change visibility till it receives our reply so as
215 * to maintain cache coherency. 268 * to maintain cache coherency.
216 */ 269 */
217 if (call->server) { 270 if (call->server) {
218 trace_afs_server(call->server- !! 271 trace_afs_server(call->server, atomic_read(&call->server->usage),
219 refcount_read <<
220 atomic_read(& <<
221 afs_server_tr 272 afs_server_trace_callback);
222 afs_break_callbacks(call->serv 273 afs_break_callbacks(call->server, call->count, call->request);
223 } 274 }
224 275
225 afs_send_empty_reply(call); 276 afs_send_empty_reply(call);
226 afs_put_call(call); 277 afs_put_call(call);
227 _leave(""); 278 _leave("");
228 } 279 }
229 280
230 /* 281 /*
231 * deliver request data to a CB.CallBack call 282 * deliver request data to a CB.CallBack call
232 */ 283 */
233 static int afs_deliver_cb_callback(struct afs_ 284 static int afs_deliver_cb_callback(struct afs_call *call)
234 { 285 {
235 struct afs_callback_break *cb; 286 struct afs_callback_break *cb;
236 __be32 *bp; 287 __be32 *bp;
237 int ret, loop; 288 int ret, loop;
238 289
239 _enter("{%u}", call->unmarshall); 290 _enter("{%u}", call->unmarshall);
240 291
241 switch (call->unmarshall) { 292 switch (call->unmarshall) {
242 case 0: 293 case 0:
243 afs_extract_to_tmp(call); 294 afs_extract_to_tmp(call);
244 call->unmarshall++; 295 call->unmarshall++;
245 296
246 /* extract the FID array and i 297 /* extract the FID array and its count in two steps */
247 fallthrough; !! 298 /* fall through */
248 case 1: 299 case 1:
249 _debug("extract FID count"); 300 _debug("extract FID count");
250 ret = afs_extract_data(call, t 301 ret = afs_extract_data(call, true);
251 if (ret < 0) 302 if (ret < 0)
252 return ret; 303 return ret;
253 304
254 call->count = ntohl(call->tmp) 305 call->count = ntohl(call->tmp);
255 _debug("FID count: %u", call-> 306 _debug("FID count: %u", call->count);
256 if (call->count > AFSCBMAX) 307 if (call->count > AFSCBMAX)
257 return afs_protocol_er 308 return afs_protocol_error(call, afs_eproto_cb_fid_count);
258 309
259 call->buffer = kmalloc(array3_ 310 call->buffer = kmalloc(array3_size(call->count, 3, 4),
260 GFP_KER 311 GFP_KERNEL);
261 if (!call->buffer) 312 if (!call->buffer)
262 return -ENOMEM; 313 return -ENOMEM;
263 afs_extract_to_buf(call, call- 314 afs_extract_to_buf(call, call->count * 3 * 4);
264 call->unmarshall++; 315 call->unmarshall++;
265 316
266 fallthrough; !! 317 /* Fall through */
267 case 2: 318 case 2:
268 _debug("extract FID array"); 319 _debug("extract FID array");
269 ret = afs_extract_data(call, t 320 ret = afs_extract_data(call, true);
270 if (ret < 0) 321 if (ret < 0)
271 return ret; 322 return ret;
272 323
273 _debug("unmarshall FID array") 324 _debug("unmarshall FID array");
274 call->request = kcalloc(call-> 325 call->request = kcalloc(call->count,
275 sizeof 326 sizeof(struct afs_callback_break),
276 GFP_KE 327 GFP_KERNEL);
277 if (!call->request) 328 if (!call->request)
278 return -ENOMEM; 329 return -ENOMEM;
279 330
280 cb = call->request; 331 cb = call->request;
281 bp = call->buffer; 332 bp = call->buffer;
282 for (loop = call->count; loop 333 for (loop = call->count; loop > 0; loop--, cb++) {
283 cb->fid.vid = ntoh 334 cb->fid.vid = ntohl(*bp++);
284 cb->fid.vnode = ntoh 335 cb->fid.vnode = ntohl(*bp++);
285 cb->fid.unique = ntoh 336 cb->fid.unique = ntohl(*bp++);
286 } 337 }
287 338
288 afs_extract_to_tmp(call); 339 afs_extract_to_tmp(call);
289 call->unmarshall++; 340 call->unmarshall++;
290 341
291 /* extract the callback array 342 /* extract the callback array and its count in two steps */
292 fallthrough; !! 343 /* fall through */
293 case 3: 344 case 3:
294 _debug("extract CB count"); 345 _debug("extract CB count");
295 ret = afs_extract_data(call, t 346 ret = afs_extract_data(call, true);
296 if (ret < 0) 347 if (ret < 0)
297 return ret; 348 return ret;
298 349
299 call->count2 = ntohl(call->tmp 350 call->count2 = ntohl(call->tmp);
300 _debug("CB count: %u", call->c 351 _debug("CB count: %u", call->count2);
301 if (call->count2 != call->coun 352 if (call->count2 != call->count && call->count2 != 0)
302 return afs_protocol_er 353 return afs_protocol_error(call, afs_eproto_cb_count);
303 call->iter = &call->def_iter; 354 call->iter = &call->def_iter;
304 iov_iter_discard(&call->def_it !! 355 iov_iter_discard(&call->def_iter, READ, call->count2 * 3 * 4);
305 call->unmarshall++; 356 call->unmarshall++;
306 357
307 fallthrough; !! 358 /* Fall through */
308 case 4: 359 case 4:
309 _debug("extract discard %zu/%u 360 _debug("extract discard %zu/%u",
310 iov_iter_count(call->it 361 iov_iter_count(call->iter), call->count2 * 3 * 4);
311 362
312 ret = afs_extract_data(call, f 363 ret = afs_extract_data(call, false);
313 if (ret < 0) 364 if (ret < 0)
314 return ret; 365 return ret;
315 366
316 call->unmarshall++; 367 call->unmarshall++;
317 fallthrough; <<
318 <<
319 case 5: 368 case 5:
320 break; 369 break;
321 } 370 }
322 371
323 if (!afs_check_call_state(call, AFS_CA 372 if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
324 return afs_io_error(call, afs_ 373 return afs_io_error(call, afs_io_error_cm_reply);
325 374
326 /* we'll need the file server record a 375 /* we'll need the file server record as that tells us which set of
327 * vnodes to operate upon */ 376 * vnodes to operate upon */
328 return afs_find_cm_server_by_peer(call 377 return afs_find_cm_server_by_peer(call);
329 } 378 }
330 379
331 /* 380 /*
332 * allow the fileserver to request callback st 381 * allow the fileserver to request callback state (re-)initialisation
333 */ 382 */
334 static void SRXAFSCB_InitCallBackState(struct 383 static void SRXAFSCB_InitCallBackState(struct work_struct *work)
335 { 384 {
336 struct afs_call *call = container_of(w 385 struct afs_call *call = container_of(work, struct afs_call, work);
337 386
338 _enter("{%p}", call->server); 387 _enter("{%p}", call->server);
339 388
340 if (call->server) 389 if (call->server)
341 afs_init_callback_state(call-> 390 afs_init_callback_state(call->server);
342 afs_send_empty_reply(call); 391 afs_send_empty_reply(call);
343 afs_put_call(call); 392 afs_put_call(call);
344 _leave(""); 393 _leave("");
345 } 394 }
346 395
347 /* 396 /*
348 * deliver request data to a CB.InitCallBackSt 397 * deliver request data to a CB.InitCallBackState call
349 */ 398 */
350 static int afs_deliver_cb_init_call_back_state 399 static int afs_deliver_cb_init_call_back_state(struct afs_call *call)
351 { 400 {
352 int ret; 401 int ret;
353 402
354 _enter(""); 403 _enter("");
355 404
356 afs_extract_discard(call, 0); 405 afs_extract_discard(call, 0);
357 ret = afs_extract_data(call, false); 406 ret = afs_extract_data(call, false);
358 if (ret < 0) 407 if (ret < 0)
359 return ret; 408 return ret;
360 409
361 /* we'll need the file server record a 410 /* we'll need the file server record as that tells us which set of
362 * vnodes to operate upon */ 411 * vnodes to operate upon */
363 return afs_find_cm_server_by_peer(call 412 return afs_find_cm_server_by_peer(call);
364 } 413 }
365 414
366 /* 415 /*
367 * deliver request data to a CB.InitCallBackSt 416 * deliver request data to a CB.InitCallBackState3 call
368 */ 417 */
369 static int afs_deliver_cb_init_call_back_state 418 static int afs_deliver_cb_init_call_back_state3(struct afs_call *call)
370 { 419 {
371 struct afs_uuid *r; 420 struct afs_uuid *r;
372 unsigned loop; 421 unsigned loop;
373 __be32 *b; 422 __be32 *b;
374 int ret; 423 int ret;
375 424
376 _enter(""); 425 _enter("");
377 426
378 _enter("{%u}", call->unmarshall); 427 _enter("{%u}", call->unmarshall);
379 428
380 switch (call->unmarshall) { 429 switch (call->unmarshall) {
381 case 0: 430 case 0:
382 call->buffer = kmalloc_array(1 431 call->buffer = kmalloc_array(11, sizeof(__be32), GFP_KERNEL);
383 if (!call->buffer) 432 if (!call->buffer)
384 return -ENOMEM; 433 return -ENOMEM;
385 afs_extract_to_buf(call, 11 * 434 afs_extract_to_buf(call, 11 * sizeof(__be32));
386 call->unmarshall++; 435 call->unmarshall++;
387 436
388 fallthrough; !! 437 /* Fall through */
389 case 1: 438 case 1:
390 _debug("extract UUID"); 439 _debug("extract UUID");
391 ret = afs_extract_data(call, f 440 ret = afs_extract_data(call, false);
392 switch (ret) { 441 switch (ret) {
393 case 0: break; 442 case 0: break;
394 case -EAGAIN: return 0; 443 case -EAGAIN: return 0;
395 default: return ret; 444 default: return ret;
396 } 445 }
397 446
398 _debug("unmarshall UUID"); 447 _debug("unmarshall UUID");
399 call->request = kmalloc(sizeof 448 call->request = kmalloc(sizeof(struct afs_uuid), GFP_KERNEL);
400 if (!call->request) 449 if (!call->request)
401 return -ENOMEM; 450 return -ENOMEM;
402 451
403 b = call->buffer; 452 b = call->buffer;
404 r = call->request; 453 r = call->request;
405 r->time_low 454 r->time_low = b[0];
406 r->time_mid 455 r->time_mid = htons(ntohl(b[1]));
407 r->time_hi_and_version 456 r->time_hi_and_version = htons(ntohl(b[2]));
408 r->clock_seq_hi_and_reserved 457 r->clock_seq_hi_and_reserved = ntohl(b[3]);
409 r->clock_seq_low 458 r->clock_seq_low = ntohl(b[4]);
410 459
411 for (loop = 0; loop < 6; loop+ 460 for (loop = 0; loop < 6; loop++)
412 r->node[loop] = ntohl( 461 r->node[loop] = ntohl(b[loop + 5]);
413 462
414 call->unmarshall++; 463 call->unmarshall++;
415 fallthrough; <<
416 464
417 case 2: 465 case 2:
418 break; 466 break;
419 } 467 }
420 468
421 if (!afs_check_call_state(call, AFS_CA 469 if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
422 return afs_io_error(call, afs_ 470 return afs_io_error(call, afs_io_error_cm_reply);
423 471
424 /* we'll need the file server record a 472 /* we'll need the file server record as that tells us which set of
425 * vnodes to operate upon */ 473 * vnodes to operate upon */
426 return afs_find_cm_server_by_uuid(call 474 return afs_find_cm_server_by_uuid(call, call->request);
427 } 475 }
428 476
429 /* 477 /*
430 * allow the fileserver to see if the cache ma 478 * allow the fileserver to see if the cache manager is still alive
431 */ 479 */
432 static void SRXAFSCB_Probe(struct work_struct 480 static void SRXAFSCB_Probe(struct work_struct *work)
433 { 481 {
434 struct afs_call *call = container_of(w 482 struct afs_call *call = container_of(work, struct afs_call, work);
435 483
436 _enter(""); 484 _enter("");
437 afs_send_empty_reply(call); 485 afs_send_empty_reply(call);
438 afs_put_call(call); 486 afs_put_call(call);
439 _leave(""); 487 _leave("");
440 } 488 }
441 489
442 /* 490 /*
443 * deliver request data to a CB.Probe call 491 * deliver request data to a CB.Probe call
444 */ 492 */
445 static int afs_deliver_cb_probe(struct afs_cal 493 static int afs_deliver_cb_probe(struct afs_call *call)
446 { 494 {
447 int ret; 495 int ret;
448 496
449 _enter(""); 497 _enter("");
450 498
451 afs_extract_discard(call, 0); 499 afs_extract_discard(call, 0);
452 ret = afs_extract_data(call, false); 500 ret = afs_extract_data(call, false);
453 if (ret < 0) 501 if (ret < 0)
454 return ret; 502 return ret;
455 503
456 if (!afs_check_call_state(call, AFS_CA 504 if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
457 return afs_io_error(call, afs_ 505 return afs_io_error(call, afs_io_error_cm_reply);
458 return afs_find_cm_server_by_peer(call 506 return afs_find_cm_server_by_peer(call);
459 } 507 }
460 508
461 /* 509 /*
462 * Allow the fileserver to quickly find out if !! 510 * allow the fileserver to quickly find out if the fileserver has been rebooted
463 * rebooted. <<
464 */ 511 */
465 static void SRXAFSCB_ProbeUuid(struct work_str 512 static void SRXAFSCB_ProbeUuid(struct work_struct *work)
466 { 513 {
467 struct afs_call *call = container_of(w 514 struct afs_call *call = container_of(work, struct afs_call, work);
468 struct afs_uuid *r = call->request; 515 struct afs_uuid *r = call->request;
469 516
470 _enter(""); 517 _enter("");
471 518
472 if (memcmp(r, &call->net->uuid, sizeof 519 if (memcmp(r, &call->net->uuid, sizeof(call->net->uuid)) == 0)
473 afs_send_empty_reply(call); 520 afs_send_empty_reply(call);
474 else 521 else
475 afs_abort_service_call(call, 1 !! 522 afs_abort_service_call(call, 1, 1, "K-1");
476 523
477 afs_put_call(call); 524 afs_put_call(call);
478 _leave(""); 525 _leave("");
479 } 526 }
480 527
481 /* 528 /*
482 * deliver request data to a CB.ProbeUuid call 529 * deliver request data to a CB.ProbeUuid call
483 */ 530 */
484 static int afs_deliver_cb_probe_uuid(struct af 531 static int afs_deliver_cb_probe_uuid(struct afs_call *call)
485 { 532 {
486 struct afs_uuid *r; 533 struct afs_uuid *r;
487 unsigned loop; 534 unsigned loop;
488 __be32 *b; 535 __be32 *b;
489 int ret; 536 int ret;
490 537
491 _enter("{%u}", call->unmarshall); 538 _enter("{%u}", call->unmarshall);
492 539
493 switch (call->unmarshall) { 540 switch (call->unmarshall) {
494 case 0: 541 case 0:
495 call->buffer = kmalloc_array(1 542 call->buffer = kmalloc_array(11, sizeof(__be32), GFP_KERNEL);
496 if (!call->buffer) 543 if (!call->buffer)
497 return -ENOMEM; 544 return -ENOMEM;
498 afs_extract_to_buf(call, 11 * 545 afs_extract_to_buf(call, 11 * sizeof(__be32));
499 call->unmarshall++; 546 call->unmarshall++;
500 547
501 fallthrough; !! 548 /* Fall through */
502 case 1: 549 case 1:
503 _debug("extract UUID"); 550 _debug("extract UUID");
504 ret = afs_extract_data(call, f 551 ret = afs_extract_data(call, false);
505 switch (ret) { 552 switch (ret) {
506 case 0: break; 553 case 0: break;
507 case -EAGAIN: return 0; 554 case -EAGAIN: return 0;
508 default: return ret; 555 default: return ret;
509 } 556 }
510 557
511 _debug("unmarshall UUID"); 558 _debug("unmarshall UUID");
512 call->request = kmalloc(sizeof 559 call->request = kmalloc(sizeof(struct afs_uuid), GFP_KERNEL);
513 if (!call->request) 560 if (!call->request)
514 return -ENOMEM; 561 return -ENOMEM;
515 562
516 b = call->buffer; 563 b = call->buffer;
517 r = call->request; 564 r = call->request;
518 r->time_low 565 r->time_low = b[0];
519 r->time_mid 566 r->time_mid = htons(ntohl(b[1]));
520 r->time_hi_and_version 567 r->time_hi_and_version = htons(ntohl(b[2]));
521 r->clock_seq_hi_and_reserved 568 r->clock_seq_hi_and_reserved = ntohl(b[3]);
522 r->clock_seq_low 569 r->clock_seq_low = ntohl(b[4]);
523 570
524 for (loop = 0; loop < 6; loop+ 571 for (loop = 0; loop < 6; loop++)
525 r->node[loop] = ntohl( 572 r->node[loop] = ntohl(b[loop + 5]);
526 573
527 call->unmarshall++; 574 call->unmarshall++;
528 fallthrough; <<
529 575
530 case 2: 576 case 2:
531 break; 577 break;
532 } 578 }
533 579
534 if (!afs_check_call_state(call, AFS_CA 580 if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
535 return afs_io_error(call, afs_ 581 return afs_io_error(call, afs_io_error_cm_reply);
536 return afs_find_cm_server_by_peer(call !! 582 return afs_find_cm_server_by_uuid(call, call->request);
537 } 583 }
538 584
539 /* 585 /*
540 * allow the fileserver to ask about the cache 586 * allow the fileserver to ask about the cache manager's capabilities
541 */ 587 */
542 static void SRXAFSCB_TellMeAboutYourself(struc 588 static void SRXAFSCB_TellMeAboutYourself(struct work_struct *work)
543 { 589 {
544 struct afs_call *call = container_of(w 590 struct afs_call *call = container_of(work, struct afs_call, work);
545 int loop; 591 int loop;
546 592
547 struct { 593 struct {
548 struct /* InterfaceAddr */ { 594 struct /* InterfaceAddr */ {
549 __be32 nifs; 595 __be32 nifs;
550 __be32 uuid[11]; 596 __be32 uuid[11];
551 __be32 ifaddr[32]; 597 __be32 ifaddr[32];
552 __be32 netmask[32]; 598 __be32 netmask[32];
553 __be32 mtu[32]; 599 __be32 mtu[32];
554 } ia; 600 } ia;
555 struct /* Capabilities */ { 601 struct /* Capabilities */ {
556 __be32 capcount; 602 __be32 capcount;
557 __be32 caps[1]; 603 __be32 caps[1];
558 } cap; 604 } cap;
559 } reply; 605 } reply;
560 606
561 _enter(""); 607 _enter("");
562 608
563 memset(&reply, 0, sizeof(reply)); 609 memset(&reply, 0, sizeof(reply));
564 610
565 reply.ia.uuid[0] = call->net->uuid.tim 611 reply.ia.uuid[0] = call->net->uuid.time_low;
566 reply.ia.uuid[1] = htonl(ntohs(call->n 612 reply.ia.uuid[1] = htonl(ntohs(call->net->uuid.time_mid));
567 reply.ia.uuid[2] = htonl(ntohs(call->n 613 reply.ia.uuid[2] = htonl(ntohs(call->net->uuid.time_hi_and_version));
568 reply.ia.uuid[3] = htonl((s8) call->ne 614 reply.ia.uuid[3] = htonl((s8) call->net->uuid.clock_seq_hi_and_reserved);
569 reply.ia.uuid[4] = htonl((s8) call->ne 615 reply.ia.uuid[4] = htonl((s8) call->net->uuid.clock_seq_low);
570 for (loop = 0; loop < 6; loop++) 616 for (loop = 0; loop < 6; loop++)
571 reply.ia.uuid[loop + 5] = hton 617 reply.ia.uuid[loop + 5] = htonl((s8) call->net->uuid.node[loop]);
572 618
573 reply.cap.capcount = htonl(1); 619 reply.cap.capcount = htonl(1);
574 reply.cap.caps[0] = htonl(AFS_CAP_ERRO 620 reply.cap.caps[0] = htonl(AFS_CAP_ERROR_TRANSLATION);
575 afs_send_simple_reply(call, &reply, si 621 afs_send_simple_reply(call, &reply, sizeof(reply));
576 afs_put_call(call); 622 afs_put_call(call);
577 _leave(""); 623 _leave("");
578 } 624 }
579 625
580 /* 626 /*
581 * deliver request data to a CB.TellMeAboutYou 627 * deliver request data to a CB.TellMeAboutYourself call
582 */ 628 */
583 static int afs_deliver_cb_tell_me_about_yourse 629 static int afs_deliver_cb_tell_me_about_yourself(struct afs_call *call)
584 { 630 {
585 int ret; 631 int ret;
586 632
587 _enter(""); 633 _enter("");
588 634
589 afs_extract_discard(call, 0); 635 afs_extract_discard(call, 0);
590 ret = afs_extract_data(call, false); 636 ret = afs_extract_data(call, false);
591 if (ret < 0) 637 if (ret < 0)
592 return ret; 638 return ret;
593 639
594 if (!afs_check_call_state(call, AFS_CA 640 if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
595 return afs_io_error(call, afs_ 641 return afs_io_error(call, afs_io_error_cm_reply);
596 return afs_find_cm_server_by_peer(call 642 return afs_find_cm_server_by_peer(call);
597 } 643 }
598 644
599 /* 645 /*
600 * deliver request data to a YFS CB.CallBack c 646 * deliver request data to a YFS CB.CallBack call
601 */ 647 */
602 static int afs_deliver_yfs_cb_callback(struct 648 static int afs_deliver_yfs_cb_callback(struct afs_call *call)
603 { 649 {
604 struct afs_callback_break *cb; 650 struct afs_callback_break *cb;
605 struct yfs_xdr_YFSFid *bp; 651 struct yfs_xdr_YFSFid *bp;
606 size_t size; 652 size_t size;
607 int ret, loop; 653 int ret, loop;
608 654
609 _enter("{%u}", call->unmarshall); 655 _enter("{%u}", call->unmarshall);
610 656
611 switch (call->unmarshall) { 657 switch (call->unmarshall) {
612 case 0: 658 case 0:
613 afs_extract_to_tmp(call); 659 afs_extract_to_tmp(call);
614 call->unmarshall++; 660 call->unmarshall++;
615 661
616 /* extract the FID array and i 662 /* extract the FID array and its count in two steps */
617 fallthrough; !! 663 /* Fall through */
618 case 1: 664 case 1:
619 _debug("extract FID count"); 665 _debug("extract FID count");
620 ret = afs_extract_data(call, t 666 ret = afs_extract_data(call, true);
621 if (ret < 0) 667 if (ret < 0)
622 return ret; 668 return ret;
623 669
624 call->count = ntohl(call->tmp) 670 call->count = ntohl(call->tmp);
625 _debug("FID count: %u", call-> 671 _debug("FID count: %u", call->count);
626 if (call->count > YFSCBMAX) 672 if (call->count > YFSCBMAX)
627 return afs_protocol_er 673 return afs_protocol_error(call, afs_eproto_cb_fid_count);
628 674
629 size = array_size(call->count, 675 size = array_size(call->count, sizeof(struct yfs_xdr_YFSFid));
630 call->buffer = kmalloc(size, G 676 call->buffer = kmalloc(size, GFP_KERNEL);
631 if (!call->buffer) 677 if (!call->buffer)
632 return -ENOMEM; 678 return -ENOMEM;
633 afs_extract_to_buf(call, size) 679 afs_extract_to_buf(call, size);
634 call->unmarshall++; 680 call->unmarshall++;
635 681
636 fallthrough; !! 682 /* Fall through */
637 case 2: 683 case 2:
638 _debug("extract FID array"); 684 _debug("extract FID array");
639 ret = afs_extract_data(call, f 685 ret = afs_extract_data(call, false);
640 if (ret < 0) 686 if (ret < 0)
641 return ret; 687 return ret;
642 688
643 _debug("unmarshall FID array") 689 _debug("unmarshall FID array");
644 call->request = kcalloc(call-> 690 call->request = kcalloc(call->count,
645 sizeof 691 sizeof(struct afs_callback_break),
646 GFP_KE 692 GFP_KERNEL);
647 if (!call->request) 693 if (!call->request)
648 return -ENOMEM; 694 return -ENOMEM;
649 695
650 cb = call->request; 696 cb = call->request;
651 bp = call->buffer; 697 bp = call->buffer;
652 for (loop = call->count; loop 698 for (loop = call->count; loop > 0; loop--, cb++) {
653 cb->fid.vid = xdr_ 699 cb->fid.vid = xdr_to_u64(bp->volume);
654 cb->fid.vnode = xdr_ 700 cb->fid.vnode = xdr_to_u64(bp->vnode.lo);
655 cb->fid.vnode_hi = nto 701 cb->fid.vnode_hi = ntohl(bp->vnode.hi);
656 cb->fid.unique = ntoh 702 cb->fid.unique = ntohl(bp->vnode.unique);
657 bp++; 703 bp++;
658 } 704 }
659 705
660 afs_extract_to_tmp(call); 706 afs_extract_to_tmp(call);
661 call->unmarshall++; 707 call->unmarshall++;
662 fallthrough; <<
663 708
664 case 3: 709 case 3:
665 break; 710 break;
666 } 711 }
667 712
668 if (!afs_check_call_state(call, AFS_CA 713 if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
669 return afs_io_error(call, afs_ 714 return afs_io_error(call, afs_io_error_cm_reply);
670 715
671 /* We'll need the file server record a 716 /* We'll need the file server record as that tells us which set of
672 * vnodes to operate upon. 717 * vnodes to operate upon.
673 */ 718 */
674 return afs_find_cm_server_by_peer(call 719 return afs_find_cm_server_by_peer(call);
675 } 720 }
676 721
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