1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (C) 2018 Universita` di Pisa
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/types.h>
31 #include <sys/stat.h>
32 #include <sys/ioctl.h>
33 #include <sys/mman.h>
34 #include <ctype.h>
35 #include <fcntl.h>
36 #include <inttypes.h>
37 #include <stdlib.h>
38 #include <stdio.h>
39 #include <stdarg.h>
40 #include <string.h>
41 #include <unistd.h>
42 #include <errno.h>
43
44 //#define NMREQ_DEBUG
45 #ifdef NMREQ_DEBUG
46 #define NETMAP_WITH_LIBS
47 #define ED(...) D(__VA_ARGS__)
48 #else
49 #define ED(...)
50 /* an identifier is a possibly empty sequence of alphanum characters and
51 * underscores
52 */
53 static int
nm_is_identifier(const char * s,const char * e)54 nm_is_identifier(const char *s, const char *e)
55 {
56 for (; s != e; s++) {
57 if (!isalnum(*s) && *s != '_') {
58 return 0;
59 }
60 }
61
62 return 1;
63 }
64 #endif /* NMREQ_DEBUG */
65
66 #include <net/netmap_user.h>
67 #define LIBNETMAP_NOTHREADSAFE
68 #include "libnetmap.h"
69
70 void
nmreq_push_option(struct nmreq_header * h,struct nmreq_option * o)71 nmreq_push_option(struct nmreq_header *h, struct nmreq_option *o)
72 {
73 o->nro_next = h->nr_options;
74 h->nr_options = (uintptr_t)o;
75 }
76
77 struct nmreq_prefix {
78 const char *prefix; /* the constant part of the prefix */
79 size_t len; /* its strlen() */
80 uint32_t flags;
81 #define NR_P_ID (1U << 0) /* whether an identifier is needed */
82 #define NR_P_SKIP (1U << 1) /* whether the scope must be passed to netmap */
83 #define NR_P_EMPTYID (1U << 2) /* whether an empty identifier is allowed */
84 };
85
86 #define declprefix(prefix, flags) { (prefix), (sizeof(prefix) - 1), (flags) }
87
88 static struct nmreq_prefix nmreq_prefixes[] = {
89 declprefix("netmap", NR_P_SKIP),
90 declprefix(NM_BDG_NAME, NR_P_ID|NR_P_EMPTYID),
91 { NULL } /* terminate the list */
92 };
93
94 void
nmreq_header_init(struct nmreq_header * h,uint16_t reqtype,void * body)95 nmreq_header_init(struct nmreq_header *h, uint16_t reqtype, void *body)
96 {
97 memset(h, 0, sizeof(*h));
98 h->nr_version = NETMAP_API;
99 h->nr_reqtype = reqtype;
100 h->nr_body = (uintptr_t)body;
101 }
102
103 int
nmreq_header_decode(const char ** pifname,struct nmreq_header * h,struct nmctx * ctx)104 nmreq_header_decode(const char **pifname, struct nmreq_header *h, struct nmctx *ctx)
105 {
106 const char *scan = NULL;
107 const char *vpname = NULL;
108 const char *pipesep = NULL;
109 u_int namelen;
110 const char *ifname = *pifname;
111 struct nmreq_prefix *p;
112
113 scan = ifname;
114 for (p = nmreq_prefixes; p->prefix != NULL; p++) {
115 if (!strncmp(scan, p->prefix, p->len))
116 break;
117 }
118 if (p->prefix == NULL) {
119 nmctx_ferror(ctx, "%s: invalid request, prefix unknown or missing", *pifname);
120 goto fail;
121 }
122 scan += p->len;
123
124 vpname = index(scan, ':');
125 if (vpname == NULL) {
126 nmctx_ferror(ctx, "%s: missing ':'", ifname);
127 goto fail;
128 }
129 if (vpname != scan) {
130 /* there is an identifier, can we accept it? */
131 if (!(p->flags & NR_P_ID)) {
132 nmctx_ferror(ctx, "%s: no identifier allowed between '%s' and ':'", *pifname, p->prefix);
133 goto fail;
134 }
135
136 if (!nm_is_identifier(scan, vpname)) {
137 nmctx_ferror(ctx, "%s: invalid identifier '%.*s'", *pifname, vpname - scan, scan);
138 goto fail;
139 }
140 } else {
141 if ((p->flags & NR_P_ID) && !(p->flags & NR_P_EMPTYID)) {
142 nmctx_ferror(ctx, "%s: identifier is missing between '%s' and ':'", *pifname, p->prefix);
143 goto fail;
144 }
145 }
146 ++vpname; /* skip the colon */
147 if (p->flags & NR_P_SKIP)
148 ifname = vpname;
149 scan = vpname;
150
151 /* scan for a separator */
152 for (; *scan && !index("-*^/@", *scan); scan++)
153 ;
154
155 /* search for possible pipe indicators */
156 for (pipesep = vpname; pipesep != scan && !index("{}", *pipesep); pipesep++)
157 ;
158
159 if (pipesep != scan) {
160 pipesep++;
161 if (*pipesep == '\0') {
162 nmctx_ferror(ctx, "%s: invalid empty pipe name", *pifname);
163 goto fail;
164 }
165 if (!nm_is_identifier(pipesep, scan)) {
166 nmctx_ferror(ctx, "%s: invalid pipe name '%.*s'", *pifname, scan - pipesep, pipesep);
167 goto fail;
168 }
169 }
170
171 namelen = scan - ifname;
172 if (namelen >= sizeof(h->nr_name)) {
173 nmctx_ferror(ctx, "name '%.*s' too long", namelen, ifname);
174 goto fail;
175 }
176 if (namelen == 0) {
177 nmctx_ferror(ctx, "%s: invalid empty port name", *pifname);
178 goto fail;
179 }
180
181 /* fill the header */
182 memcpy(h->nr_name, ifname, namelen);
183 h->nr_name[namelen] = '\0';
184 ED("name %s", h->nr_name);
185
186 *pifname = scan;
187
188 return 0;
189 fail:
190 errno = EINVAL;
191 return -1;
192 }
193
194
195 /*
196 * 0 not recognized
197 * -1 error
198 * >= 0 mem_id
199 */
200 int32_t
nmreq_get_mem_id(const char ** pifname,struct nmctx * ctx)201 nmreq_get_mem_id(const char **pifname, struct nmctx *ctx)
202 {
203 int fd = -1;
204 struct nmreq_header gh;
205 struct nmreq_port_info_get gb;
206 const char *ifname;
207
208 errno = 0;
209 ifname = *pifname;
210
211 if (ifname == NULL)
212 goto fail;
213
214 /* try to look for a netmap port with this name */
215 fd = open("/dev/netmap", O_RDWR);
216 if (fd < 0) {
217 nmctx_ferror(ctx, "cannot open /dev/netmap: %s", strerror(errno));
218 goto fail;
219 }
220 nmreq_header_init(&gh, NETMAP_REQ_PORT_INFO_GET, &gb);
221 if (nmreq_header_decode(&ifname, &gh, ctx) < 0) {
222 goto fail;
223 }
224 memset(&gb, 0, sizeof(gb));
225 if (ioctl(fd, NIOCCTRL, &gh) < 0) {
226 nmctx_ferror(ctx, "cannot get info for '%s': %s", *pifname, strerror(errno));
227 goto fail;
228 }
229 *pifname = ifname;
230 close(fd);
231 return gb.nr_mem_id;
232
233 fail:
234 if (fd >= 0)
235 close(fd);
236 if (!errno)
237 errno = EINVAL;
238 return -1;
239 }
240
241
242 int
nmreq_register_decode(const char ** pifname,struct nmreq_register * r,struct nmctx * ctx)243 nmreq_register_decode(const char **pifname, struct nmreq_register *r, struct nmctx *ctx)
244 {
245 enum { P_START, P_RNGSFXOK, P_GETNUM, P_FLAGS, P_FLAGSOK, P_MEMID, P_ONESW } p_state;
246 long num;
247 const char *scan = *pifname;
248 uint32_t nr_mode;
249 uint16_t nr_mem_id;
250 uint16_t nr_ringid;
251 uint64_t nr_flags;
252
253 errno = 0;
254
255 /* fill the request */
256
257 p_state = P_START;
258 /* defaults */
259 nr_mode = NR_REG_ALL_NIC; /* default for no suffix */
260 nr_mem_id = r->nr_mem_id; /* if non-zero, further updates are disabled */
261 nr_ringid = 0;
262 nr_flags = 0;
263 while (*scan) {
264 switch (p_state) {
265 case P_START:
266 switch (*scan) {
267 case '^': /* only SW ring */
268 nr_mode = NR_REG_SW;
269 p_state = P_ONESW;
270 break;
271 case '*': /* NIC and SW */
272 nr_mode = NR_REG_NIC_SW;
273 p_state = P_RNGSFXOK;
274 break;
275 case '-': /* one NIC ring pair */
276 nr_mode = NR_REG_ONE_NIC;
277 p_state = P_GETNUM;
278 break;
279 case '/': /* start of flags */
280 p_state = P_FLAGS;
281 break;
282 case '@': /* start of memid */
283 p_state = P_MEMID;
284 break;
285 default:
286 nmctx_ferror(ctx, "unknown modifier: '%c'", *scan);
287 goto fail;
288 }
289 scan++;
290 break;
291 case P_RNGSFXOK:
292 switch (*scan) {
293 case '/':
294 p_state = P_FLAGS;
295 break;
296 case '@':
297 p_state = P_MEMID;
298 break;
299 default:
300 nmctx_ferror(ctx, "unexpected character: '%c'", *scan);
301 goto fail;
302 }
303 scan++;
304 break;
305 case P_GETNUM:
306 if (!isdigit(*scan)) {
307 nmctx_ferror(ctx, "got '%s' while expecting a number", scan);
308 goto fail;
309 }
310 num = strtol(scan, (char **)&scan, 10);
311 if (num < 0 || num >= NETMAP_RING_MASK) {
312 nmctx_ferror(ctx, "'%ld' out of range [0, %d)",
313 num, NETMAP_RING_MASK);
314 goto fail;
315 }
316 nr_ringid = num & NETMAP_RING_MASK;
317 p_state = P_RNGSFXOK;
318 break;
319 case P_FLAGS:
320 case P_FLAGSOK:
321 switch (*scan) {
322 case '@':
323 p_state = P_MEMID;
324 scan++;
325 continue;
326 case 'x':
327 nr_flags |= NR_EXCLUSIVE;
328 break;
329 case 'z':
330 nr_flags |= NR_ZCOPY_MON;
331 break;
332 case 't':
333 nr_flags |= NR_MONITOR_TX;
334 break;
335 case 'r':
336 nr_flags |= NR_MONITOR_RX;
337 break;
338 case 'R':
339 nr_flags |= NR_RX_RINGS_ONLY;
340 break;
341 case 'T':
342 nr_flags |= NR_TX_RINGS_ONLY;
343 break;
344 default:
345 nmctx_ferror(ctx, "unrecognized flag: '%c'", *scan);
346 goto fail;
347 }
348 scan++;
349 p_state = P_FLAGSOK;
350 break;
351 case P_MEMID:
352 if (!isdigit(*scan)) {
353 scan--; /* escape to options */
354 goto out;
355 }
356 num = strtol(scan, (char **)&scan, 10);
357 if (num <= 0) {
358 nmctx_ferror(ctx, "invalid mem_id: '%ld'", num);
359 goto fail;
360 }
361 if (nr_mem_id && nr_mem_id != num) {
362 nmctx_ferror(ctx, "invalid setting of mem_id to %ld (already set to %"PRIu16")", num, nr_mem_id);
363 goto fail;
364 }
365 nr_mem_id = num;
366 p_state = P_RNGSFXOK;
367 break;
368 case P_ONESW:
369 if (!isdigit(*scan)) {
370 p_state = P_RNGSFXOK;
371 } else {
372 nr_mode = NR_REG_ONE_SW;
373 p_state = P_GETNUM;
374 }
375 break;
376 }
377 }
378 if (p_state == P_MEMID && !*scan) {
379 nmctx_ferror(ctx, "invalid empty mem_id");
380 goto fail;
381 }
382 if (p_state != P_START && p_state != P_RNGSFXOK &&
383 p_state != P_FLAGSOK && p_state != P_MEMID && p_state != P_ONESW) {
384 nmctx_ferror(ctx, "unexpected end of request");
385 goto fail;
386 }
387 out:
388 ED("flags: %s %s %s %s %s %s",
389 (nr_flags & NR_EXCLUSIVE) ? "EXCLUSIVE" : "",
390 (nr_flags & NR_ZCOPY_MON) ? "ZCOPY_MON" : "",
391 (nr_flags & NR_MONITOR_TX) ? "MONITOR_TX" : "",
392 (nr_flags & NR_MONITOR_RX) ? "MONITOR_RX" : "",
393 (nr_flags & NR_RX_RINGS_ONLY) ? "RX_RINGS_ONLY" : "",
394 (nr_flags & NR_TX_RINGS_ONLY) ? "TX_RINGS_ONLY" : "");
395 r->nr_mode = nr_mode;
396 r->nr_ringid = nr_ringid;
397 r->nr_flags = nr_flags;
398 r->nr_mem_id = nr_mem_id;
399 *pifname = scan;
400 return 0;
401
402 fail:
403 if (!errno)
404 errno = EINVAL;
405 return -1;
406 }
407
408
409 static int
nmreq_option_parsekeys(const char * prefix,char * body,struct nmreq_opt_parser * p,struct nmreq_parse_ctx * pctx)410 nmreq_option_parsekeys(const char *prefix, char *body, struct nmreq_opt_parser *p,
411 struct nmreq_parse_ctx *pctx)
412 {
413 char *scan;
414 char delim1;
415 struct nmreq_opt_key *k;
416
417 scan = body;
418 delim1 = *scan;
419 while (delim1 != '\0') {
420 char *key, *value;
421 char delim;
422 size_t vlen;
423
424 key = scan;
425 for ( scan++; *scan != '\0' && *scan != '=' && *scan != ','; scan++) {
426 if (*scan == '-')
427 *scan = '_';
428 }
429 delim = *scan;
430 *scan = '\0';
431 scan++;
432 for (k = p->keys; (k - p->keys) < NMREQ_OPT_MAXKEYS && k->key != NULL;
433 k++) {
434 if (!strcmp(k->key, key))
435 goto found;
436
437 }
438 nmctx_ferror(pctx->ctx, "unknown key: '%s'", key);
439 errno = EINVAL;
440 return -1;
441 found:
442 if (pctx->keys[k->id] != NULL) {
443 nmctx_ferror(pctx->ctx, "option '%s': duplicate key '%s', already set to '%s'",
444 prefix, key, pctx->keys[k->id]);
445 errno = EINVAL;
446 return -1;
447 }
448 value = scan;
449 for ( ; *scan != '\0' && *scan != ','; scan++)
450 ;
451 delim1 = *scan;
452 *scan = '\0';
453 vlen = scan - value;
454 scan++;
455 if (delim == '=') {
456 pctx->keys[k->id] = (vlen ? value : NULL);
457 } else {
458 if (!(k->flags & NMREQ_OPTK_ALLOWEMPTY)) {
459 nmctx_ferror(pctx->ctx, "option '%s': missing '=value' for key '%s'",
460 prefix, key);
461 errno = EINVAL;
462 return -1;
463 }
464 pctx->keys[k->id] = key;
465 }
466 }
467 /* now check that all no-default keys have been assigned */
468 for (k = p->keys; (k - p->keys) < NMREQ_OPT_MAXKEYS && k->key != NULL; k++) {
469 if ((k->flags & NMREQ_OPTK_MUSTSET) && pctx->keys[k->id] == NULL) {
470 nmctx_ferror(pctx->ctx, "option '%s': mandatory key '%s' not assigned",
471 prefix, k->key);
472 errno = EINVAL;
473 return -1;
474 }
475 }
476 return 0;
477 }
478
479
480 static int
nmreq_option_decode1(char * opt,struct nmreq_opt_parser * parsers,void * token,struct nmctx * ctx)481 nmreq_option_decode1(char *opt, struct nmreq_opt_parser *parsers,
482 void *token, struct nmctx *ctx)
483 {
484 struct nmreq_opt_parser *p;
485 const char *prefix;
486 char *scan;
487 char delim;
488 struct nmreq_parse_ctx pctx;
489 int i;
490
491 prefix = opt;
492 /* find the delimiter */
493 for (scan = opt; *scan != '\0' && *scan != ':' && *scan != '='; scan++)
494 ;
495 delim = *scan;
496 *scan = '\0';
497 scan++;
498 /* find the prefix */
499 for (p = parsers; p != NULL; p = p->next) {
500 if (!strcmp(prefix, p->prefix))
501 break;
502 }
503 if (p == NULL) {
504 nmctx_ferror(ctx, "unknown option: '%s'", prefix);
505 errno = EINVAL;
506 return -1;
507 }
508 if (p->flags & NMREQ_OPTF_DISABLED) {
509 nmctx_ferror(ctx, "option '%s' is not supported", prefix);
510 errno = EOPNOTSUPP;
511 return -1;
512 }
513 /* prepare the parse context */
514 pctx.ctx = ctx;
515 pctx.token = token;
516 for (i = 0; i < NMREQ_OPT_MAXKEYS; i++)
517 pctx.keys[i] = NULL;
518 switch (delim) {
519 case '\0':
520 /* no body */
521 if (!(p->flags & NMREQ_OPTF_ALLOWEMPTY)) {
522 nmctx_ferror(ctx, "syntax error: missing body after '%s'",
523 prefix);
524 errno = EINVAL;
525 return -1;
526 }
527 break;
528 case '=': /* the body goes to the default option key, if any */
529 if (p->default_key < 0 || p->default_key >= NMREQ_OPT_MAXKEYS) {
530 nmctx_ferror(ctx, "syntax error: '=' not valid after '%s'",
531 prefix);
532 errno = EINVAL;
533 return -1;
534 }
535 if (*scan == '\0') {
536 nmctx_ferror(ctx, "missing value for option '%s'", prefix);
537 errno = EINVAL;
538 return -1;
539 }
540 pctx.keys[p->default_key] = scan;
541 break;
542 case ':': /* parse 'key=value' strings */
543 if (nmreq_option_parsekeys(prefix, scan, p, &pctx) < 0)
544 return -1;
545 break;
546 }
547 return p->parse(&pctx);
548 }
549
550 int
nmreq_options_decode(const char * opt,struct nmreq_opt_parser parsers[],void * token,struct nmctx * ctx)551 nmreq_options_decode(const char *opt, struct nmreq_opt_parser parsers[],
552 void *token, struct nmctx *ctx)
553 {
554 const char *scan, *opt1;
555 char *w;
556 size_t len;
557 int ret;
558
559 if (*opt == '\0')
560 return 0; /* empty list, OK */
561
562 if (*opt != '@') {
563 nmctx_ferror(ctx, "option list does not start with '@'");
564 errno = EINVAL;
565 return -1;
566 }
567
568 scan = opt;
569 do {
570 scan++; /* skip the plus */
571 opt1 = scan; /* start of option */
572 /* find the end of the option */
573 for ( ; *scan != '\0' && *scan != '@'; scan++)
574 ;
575 len = scan - opt1;
576 if (len == 0) {
577 nmctx_ferror(ctx, "invalid empty option");
578 errno = EINVAL;
579 return -1;
580 }
581 w = nmctx_malloc(ctx, len + 1);
582 if (w == NULL) {
583 nmctx_ferror(ctx, "out of memory");
584 errno = ENOMEM;
585 return -1;
586 }
587 memcpy(w, opt1, len);
588 w[len] = '\0';
589 ret = nmreq_option_decode1(w, parsers, token, ctx);
590 nmctx_free(ctx, w);
591 if (ret < 0)
592 return -1;
593 } while (*scan != '\0');
594
595 return 0;
596 }
597
598 struct nmreq_option *
nmreq_find_option(struct nmreq_header * h,uint32_t t)599 nmreq_find_option(struct nmreq_header *h, uint32_t t)
600 {
601 struct nmreq_option *o = NULL;
602
603 nmreq_foreach_option(h, o) {
604 if (o->nro_reqtype == t)
605 break;
606 }
607 return o;
608 }
609
610 void
nmreq_remove_option(struct nmreq_header * h,struct nmreq_option * o)611 nmreq_remove_option(struct nmreq_header *h, struct nmreq_option *o)
612 {
613 struct nmreq_option **nmo;
614
615 for (nmo = (struct nmreq_option **)&h->nr_options; *nmo != NULL;
616 nmo = (struct nmreq_option **)&(*nmo)->nro_next) {
617 if (*nmo == o) {
618 *((uint64_t *)(*nmo)) = o->nro_next;
619 o->nro_next = (uint64_t)(uintptr_t)NULL;
620 break;
621 }
622 }
623 }
624
625 void
nmreq_free_options(struct nmreq_header * h)626 nmreq_free_options(struct nmreq_header *h)
627 {
628 struct nmreq_option *o, *next;
629
630 /*
631 * Note: can't use nmreq_foreach_option() here; it frees the
632 * list as it's walking and nmreq_foreach_option() isn't
633 * modification-safe.
634 */
635 for (o = (struct nmreq_option *)(uintptr_t)h->nr_options; o != NULL;
636 o = next) {
637 next = (struct nmreq_option *)(uintptr_t)o->nro_next;
638 free(o);
639 }
640 }
641
642 const char*
nmreq_option_name(uint32_t nro_reqtype)643 nmreq_option_name(uint32_t nro_reqtype)
644 {
645 switch (nro_reqtype) {
646 case NETMAP_REQ_OPT_EXTMEM:
647 return "extmem";
648 case NETMAP_REQ_OPT_SYNC_KLOOP_EVENTFDS:
649 return "sync-kloop-eventfds";
650 case NETMAP_REQ_OPT_CSB:
651 return "csb";
652 case NETMAP_REQ_OPT_SYNC_KLOOP_MODE:
653 return "sync-kloop-mode";
654 case NETMAP_REQ_OPT_OFFSETS:
655 return "offsets";
656 default:
657 return "unknown";
658 }
659 }
660
661 #if 0
662 #include <inttypes.h>
663 static void
664 nmreq_dump(struct nmport_d *d)
665 {
666 printf("header:\n");
667 printf(" nr_version: %"PRIu16"\n", d->hdr.nr_version);
668 printf(" nr_reqtype: %"PRIu16"\n", d->hdr.nr_reqtype);
669 printf(" nr_reserved: %"PRIu32"\n", d->hdr.nr_reserved);
670 printf(" nr_name: %s\n", d->hdr.nr_name);
671 printf(" nr_options: %lx\n", (unsigned long)d->hdr.nr_options);
672 printf(" nr_body: %lx\n", (unsigned long)d->hdr.nr_body);
673 printf("\n");
674 printf("register (%p):\n", (void *)d->hdr.nr_body);
675 printf(" nr_mem_id: %"PRIu16"\n", d->reg.nr_mem_id);
676 printf(" nr_ringid: %"PRIu16"\n", d->reg.nr_ringid);
677 printf(" nr_mode: %lx\n", (unsigned long)d->reg.nr_mode);
678 printf(" nr_flags: %lx\n", (unsigned long)d->reg.nr_flags);
679 printf("\n");
680 if (d->hdr.nr_options) {
681 struct nmreq_opt_extmem *e = (struct nmreq_opt_extmem *)d->hdr.nr_options;
682 printf("opt_extmem (%p):\n", e);
683 printf(" nro_opt.nro_next: %lx\n", (unsigned long)e->nro_opt.nro_next);
684 printf(" nro_opt.nro_reqtype: %"PRIu32"\n", e->nro_opt.nro_reqtype);
685 printf(" nro_usrptr: %lx\n", (unsigned long)e->nro_usrptr);
686 printf(" nro_info.nr_memsize %"PRIu64"\n", e->nro_info.nr_memsize);
687 }
688 printf("\n");
689 printf("mem (%p):\n", d->mem);
690 printf(" refcount: %d\n", d->mem->refcount);
691 printf(" mem: %p\n", d->mem->mem);
692 printf(" size: %zu\n", d->mem->size);
693 printf("\n");
694 printf("rings:\n");
695 printf(" tx: [%d, %d]\n", d->first_tx_ring, d->last_tx_ring);
696 printf(" rx: [%d, %d]\n", d->first_rx_ring, d->last_rx_ring);
697 }
698 int
699 main(int argc, char *argv[])
700 {
701 struct nmport_d *d;
702
703 if (argc < 2) {
704 fprintf(stderr, "usage: %s netmap-expr\n", argv[0]);
705 return 1;
706 }
707
708 d = nmport_open(argv[1]);
709 if (d != NULL) {
710 nmreq_dump(d);
711 nmport_close(d);
712 }
713
714 return 0;
715 }
716 #endif
717