1#include <stdio.h>
2#include <string.h>
3#include <inttypes.h>
4#include "event-parse.h"
5
6typedef unsigned long sector_t;
7typedef uint64_t u64;
8typedef unsigned int u32;
9
10
11
12
13#define TEST_UNIT_READY 0x00
14#define REZERO_UNIT 0x01
15#define REQUEST_SENSE 0x03
16#define FORMAT_UNIT 0x04
17#define READ_BLOCK_LIMITS 0x05
18#define REASSIGN_BLOCKS 0x07
19#define INITIALIZE_ELEMENT_STATUS 0x07
20#define READ_6 0x08
21#define WRITE_6 0x0a
22#define SEEK_6 0x0b
23#define READ_REVERSE 0x0f
24#define WRITE_FILEMARKS 0x10
25#define SPACE 0x11
26#define INQUIRY 0x12
27#define RECOVER_BUFFERED_DATA 0x14
28#define MODE_SELECT 0x15
29#define RESERVE 0x16
30#define RELEASE 0x17
31#define COPY 0x18
32#define ERASE 0x19
33#define MODE_SENSE 0x1a
34#define START_STOP 0x1b
35#define RECEIVE_DIAGNOSTIC 0x1c
36#define SEND_DIAGNOSTIC 0x1d
37#define ALLOW_MEDIUM_REMOVAL 0x1e
38
39#define READ_FORMAT_CAPACITIES 0x23
40#define SET_WINDOW 0x24
41#define READ_CAPACITY 0x25
42#define READ_10 0x28
43#define WRITE_10 0x2a
44#define SEEK_10 0x2b
45#define POSITION_TO_ELEMENT 0x2b
46#define WRITE_VERIFY 0x2e
47#define VERIFY 0x2f
48#define SEARCH_HIGH 0x30
49#define SEARCH_EQUAL 0x31
50#define SEARCH_LOW 0x32
51#define SET_LIMITS 0x33
52#define PRE_FETCH 0x34
53#define READ_POSITION 0x34
54#define SYNCHRONIZE_CACHE 0x35
55#define LOCK_UNLOCK_CACHE 0x36
56#define READ_DEFECT_DATA 0x37
57#define MEDIUM_SCAN 0x38
58#define COMPARE 0x39
59#define COPY_VERIFY 0x3a
60#define WRITE_BUFFER 0x3b
61#define READ_BUFFER 0x3c
62#define UPDATE_BLOCK 0x3d
63#define READ_LONG 0x3e
64#define WRITE_LONG 0x3f
65#define CHANGE_DEFINITION 0x40
66#define WRITE_SAME 0x41
67#define UNMAP 0x42
68#define READ_TOC 0x43
69#define READ_HEADER 0x44
70#define GET_EVENT_STATUS_NOTIFICATION 0x4a
71#define LOG_SELECT 0x4c
72#define LOG_SENSE 0x4d
73#define XDWRITEREAD_10 0x53
74#define MODE_SELECT_10 0x55
75#define RESERVE_10 0x56
76#define RELEASE_10 0x57
77#define MODE_SENSE_10 0x5a
78#define PERSISTENT_RESERVE_IN 0x5e
79#define PERSISTENT_RESERVE_OUT 0x5f
80#define VARIABLE_LENGTH_CMD 0x7f
81#define REPORT_LUNS 0xa0
82#define SECURITY_PROTOCOL_IN 0xa2
83#define MAINTENANCE_IN 0xa3
84#define MAINTENANCE_OUT 0xa4
85#define MOVE_MEDIUM 0xa5
86#define EXCHANGE_MEDIUM 0xa6
87#define READ_12 0xa8
88#define SERVICE_ACTION_OUT_12 0xa9
89#define WRITE_12 0xaa
90#define SERVICE_ACTION_IN_12 0xab
91#define WRITE_VERIFY_12 0xae
92#define VERIFY_12 0xaf
93#define SEARCH_HIGH_12 0xb0
94#define SEARCH_EQUAL_12 0xb1
95#define SEARCH_LOW_12 0xb2
96#define SECURITY_PROTOCOL_OUT 0xb5
97#define READ_ELEMENT_STATUS 0xb8
98#define SEND_VOLUME_TAG 0xb6
99#define WRITE_LONG_2 0xea
100#define EXTENDED_COPY 0x83
101#define RECEIVE_COPY_RESULTS 0x84
102#define ACCESS_CONTROL_IN 0x86
103#define ACCESS_CONTROL_OUT 0x87
104#define READ_16 0x88
105#define WRITE_16 0x8a
106#define READ_ATTRIBUTE 0x8c
107#define WRITE_ATTRIBUTE 0x8d
108#define VERIFY_16 0x8f
109#define SYNCHRONIZE_CACHE_16 0x91
110#define WRITE_SAME_16 0x93
111#define SERVICE_ACTION_BIDIRECTIONAL 0x9d
112#define SERVICE_ACTION_IN_16 0x9e
113#define SERVICE_ACTION_OUT_16 0x9f
114
115#define SAI_READ_CAPACITY_16 0x10
116#define SAI_GET_LBA_STATUS 0x12
117
118
119#define VLC_SA_RECEIVE_CREDENTIAL 0x1800
120
121#define MI_REPORT_IDENTIFYING_INFORMATION 0x05
122#define MI_REPORT_TARGET_PGS 0x0a
123#define MI_REPORT_ALIASES 0x0b
124#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c
125#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d
126#define MI_REPORT_PRIORITY 0x0e
127#define MI_REPORT_TIMESTAMP 0x0f
128#define MI_MANAGEMENT_PROTOCOL_IN 0x10
129
130#define MI_EXT_HDR_PARAM_FMT 0x20
131
132#define MO_SET_IDENTIFYING_INFORMATION 0x06
133#define MO_SET_TARGET_PGS 0x0a
134#define MO_CHANGE_ALIASES 0x0b
135#define MO_SET_PRIORITY 0x0e
136#define MO_SET_TIMESTAMP 0x0f
137#define MO_MANAGEMENT_PROTOCOL_OUT 0x10
138
139#define XDREAD_32 0x03
140#define XDWRITE_32 0x04
141#define XPWRITE_32 0x06
142#define XDWRITEREAD_32 0x07
143#define READ_32 0x09
144#define VERIFY_32 0x0a
145#define WRITE_32 0x0b
146#define WRITE_SAME_32 0x0d
147
148#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f)
149#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9])
150
151static const char *
152scsi_trace_misc(struct trace_seq *, unsigned char *, int);
153
154static const char *
155scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len)
156{
157 const char *ret = p->buffer + p->len;
158 sector_t lba = 0, txlen = 0;
159
160 lba |= ((cdb[1] & 0x1F) << 16);
161 lba |= (cdb[2] << 8);
162 lba |= cdb[3];
163 txlen = cdb[4];
164
165 trace_seq_printf(p, "lba=%llu txlen=%llu",
166 (unsigned long long)lba, (unsigned long long)txlen);
167 trace_seq_putc(p, 0);
168 return ret;
169}
170
171static const char *
172scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len)
173{
174 const char *ret = p->buffer + p->len;
175 sector_t lba = 0, txlen = 0;
176
177 lba |= (cdb[2] << 24);
178 lba |= (cdb[3] << 16);
179 lba |= (cdb[4] << 8);
180 lba |= cdb[5];
181 txlen |= (cdb[7] << 8);
182 txlen |= cdb[8];
183
184 trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
185 (unsigned long long)lba, (unsigned long long)txlen,
186 cdb[1] >> 5);
187
188 if (cdb[0] == WRITE_SAME)
189 trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
190
191 trace_seq_putc(p, 0);
192 return ret;
193}
194
195static const char *
196scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len)
197{
198 const char *ret = p->buffer + p->len;
199 sector_t lba = 0, txlen = 0;
200
201 lba |= (cdb[2] << 24);
202 lba |= (cdb[3] << 16);
203 lba |= (cdb[4] << 8);
204 lba |= cdb[5];
205 txlen |= (cdb[6] << 24);
206 txlen |= (cdb[7] << 16);
207 txlen |= (cdb[8] << 8);
208 txlen |= cdb[9];
209
210 trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
211 (unsigned long long)lba, (unsigned long long)txlen,
212 cdb[1] >> 5);
213 trace_seq_putc(p, 0);
214 return ret;
215}
216
217static const char *
218scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len)
219{
220 const char *ret = p->buffer + p->len;
221 sector_t lba = 0, txlen = 0;
222
223 lba |= ((u64)cdb[2] << 56);
224 lba |= ((u64)cdb[3] << 48);
225 lba |= ((u64)cdb[4] << 40);
226 lba |= ((u64)cdb[5] << 32);
227 lba |= (cdb[6] << 24);
228 lba |= (cdb[7] << 16);
229 lba |= (cdb[8] << 8);
230 lba |= cdb[9];
231 txlen |= (cdb[10] << 24);
232 txlen |= (cdb[11] << 16);
233 txlen |= (cdb[12] << 8);
234 txlen |= cdb[13];
235
236 trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u",
237 (unsigned long long)lba, (unsigned long long)txlen,
238 cdb[1] >> 5);
239
240 if (cdb[0] == WRITE_SAME_16)
241 trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1);
242
243 trace_seq_putc(p, 0);
244 return ret;
245}
246
247static const char *
248scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len)
249{
250 const char *ret = p->buffer + p->len, *cmd;
251 sector_t lba = 0, txlen = 0;
252 u32 ei_lbrt = 0;
253
254 switch (SERVICE_ACTION32(cdb)) {
255 case READ_32:
256 cmd = "READ";
257 break;
258 case VERIFY_32:
259 cmd = "VERIFY";
260 break;
261 case WRITE_32:
262 cmd = "WRITE";
263 break;
264 case WRITE_SAME_32:
265 cmd = "WRITE_SAME";
266 break;
267 default:
268 trace_seq_printf(p, "UNKNOWN");
269 goto out;
270 }
271
272 lba |= ((u64)cdb[12] << 56);
273 lba |= ((u64)cdb[13] << 48);
274 lba |= ((u64)cdb[14] << 40);
275 lba |= ((u64)cdb[15] << 32);
276 lba |= (cdb[16] << 24);
277 lba |= (cdb[17] << 16);
278 lba |= (cdb[18] << 8);
279 lba |= cdb[19];
280 ei_lbrt |= (cdb[20] << 24);
281 ei_lbrt |= (cdb[21] << 16);
282 ei_lbrt |= (cdb[22] << 8);
283 ei_lbrt |= cdb[23];
284 txlen |= (cdb[28] << 24);
285 txlen |= (cdb[29] << 16);
286 txlen |= (cdb[30] << 8);
287 txlen |= cdb[31];
288
289 trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u",
290 cmd, (unsigned long long)lba,
291 (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt);
292
293 if (SERVICE_ACTION32(cdb) == WRITE_SAME_32)
294 trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1);
295
296out:
297 trace_seq_putc(p, 0);
298 return ret;
299}
300
301static const char *
302scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len)
303{
304 const char *ret = p->buffer + p->len;
305 unsigned int regions = cdb[7] << 8 | cdb[8];
306
307 trace_seq_printf(p, "regions=%u", (regions - 8) / 16);
308 trace_seq_putc(p, 0);
309 return ret;
310}
311
312static const char *
313scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len)
314{
315 const char *ret = p->buffer + p->len, *cmd;
316 sector_t lba = 0;
317 u32 alloc_len = 0;
318
319 switch (SERVICE_ACTION16(cdb)) {
320 case SAI_READ_CAPACITY_16:
321 cmd = "READ_CAPACITY_16";
322 break;
323 case SAI_GET_LBA_STATUS:
324 cmd = "GET_LBA_STATUS";
325 break;
326 default:
327 trace_seq_printf(p, "UNKNOWN");
328 goto out;
329 }
330
331 lba |= ((u64)cdb[2] << 56);
332 lba |= ((u64)cdb[3] << 48);
333 lba |= ((u64)cdb[4] << 40);
334 lba |= ((u64)cdb[5] << 32);
335 lba |= (cdb[6] << 24);
336 lba |= (cdb[7] << 16);
337 lba |= (cdb[8] << 8);
338 lba |= cdb[9];
339 alloc_len |= (cdb[10] << 24);
340 alloc_len |= (cdb[11] << 16);
341 alloc_len |= (cdb[12] << 8);
342 alloc_len |= cdb[13];
343
344 trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd,
345 (unsigned long long)lba, alloc_len);
346
347out:
348 trace_seq_putc(p, 0);
349 return ret;
350}
351
352static const char *
353scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len)
354{
355 switch (SERVICE_ACTION32(cdb)) {
356 case READ_32:
357 case VERIFY_32:
358 case WRITE_32:
359 case WRITE_SAME_32:
360 return scsi_trace_rw32(p, cdb, len);
361 default:
362 return scsi_trace_misc(p, cdb, len);
363 }
364}
365
366static const char *
367scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
368{
369 const char *ret = p->buffer + p->len;
370
371 trace_seq_printf(p, "-");
372 trace_seq_putc(p, 0);
373 return ret;
374}
375
376const char *
377scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
378{
379 switch (cdb[0]) {
380 case READ_6:
381 case WRITE_6:
382 return scsi_trace_rw6(p, cdb, len);
383 case READ_10:
384 case VERIFY:
385 case WRITE_10:
386 case WRITE_SAME:
387 return scsi_trace_rw10(p, cdb, len);
388 case READ_12:
389 case VERIFY_12:
390 case WRITE_12:
391 return scsi_trace_rw12(p, cdb, len);
392 case READ_16:
393 case VERIFY_16:
394 case WRITE_16:
395 case WRITE_SAME_16:
396 return scsi_trace_rw16(p, cdb, len);
397 case UNMAP:
398 return scsi_trace_unmap(p, cdb, len);
399 case SERVICE_ACTION_IN_16:
400 return scsi_trace_service_action_in(p, cdb, len);
401 case VARIABLE_LENGTH_CMD:
402 return scsi_trace_varlen(p, cdb, len);
403 default:
404 return scsi_trace_misc(p, cdb, len);
405 }
406}
407
408unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s,
409 unsigned long long *args)
410{
411 scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]);
412 return 0;
413}
414
415int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
416{
417 pevent_register_print_function(pevent,
418 process_scsi_trace_parse_cdb,
419 PEVENT_FUNC_ARG_STRING,
420 "scsi_trace_parse_cdb",
421 PEVENT_FUNC_ARG_PTR,
422 PEVENT_FUNC_ARG_PTR,
423 PEVENT_FUNC_ARG_INT,
424 PEVENT_FUNC_ARG_VOID);
425 return 0;
426}
427
428void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
429{
430 pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb,
431 "scsi_trace_parse_cdb");
432}
433
