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