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