1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
73 	o->nro_next = h->nr_options;  in nmreq_push_option()
74 	h->nr_options = (uintptr_t)o;  in nmreq_push_option()
86 #define declprefix(prefix, flags)	{ (prefix), (sizeof(prefix) - 1), (flags) }
98 	h->nr_version = NETMAP_API;  in nmreq_header_init()
99 	h->nr_reqtype = reqtype;  in nmreq_header_init()
100 	h->nr_body = (uintptr_t)body;  in nmreq_header_init()
114 	for (p = nmreq_prefixes; p->prefix != NULL; p++) {  in nmreq_header_decode()
115 		if (!strncmp(scan, p->prefix, p->len))  in nmreq_header_decode()
118 	if (p->prefix == NULL) {  in nmreq_header_decode()
122 	scan += p->len;  in nmreq_header_decode()
131 		if (!(p->flags & NR_P_ID)) {  in nmreq_header_decode()
132 			nmctx_ferror(ctx, "%s: no identifier allowed between '%s' and ':'", *pifname, p->prefix);  in nmreq_header_decode()
137 			nmctx_ferror(ctx, "%s: invalid identifier '%.*s'", *pifname, vpname - scan, scan);  in nmreq_header_decode()
141 		if ((p->flags & NR_P_ID) && !(p->flags & NR_P_EMPTYID)) {  in nmreq_header_decode()
142 			nmctx_ferror(ctx, "%s: identifier is missing between '%s' and ':'", *pifname, p->prefix);  in nmreq_header_decode()
147 	if (p->flags & NR_P_SKIP)  in nmreq_header_decode()
152 	for (; *scan && !index("-*^/@", *scan); scan++)  in nmreq_header_decode()
166 			nmctx_ferror(ctx, "%s: invalid pipe name '%.*s'", *pifname, scan - pipesep, pipesep);  in nmreq_header_decode()
171 	namelen = scan - ifname;  in nmreq_header_decode()
172 	if (namelen >= sizeof(h->nr_name)) {  in nmreq_header_decode()
182 	memcpy(h->nr_name, ifname, namelen);  in nmreq_header_decode()
183 	h->nr_name[namelen] = '\0';  in nmreq_header_decode()
184 	ED("name %s", h->nr_name);  in nmreq_header_decode()
191 	return -1;  in nmreq_header_decode()
197  * -1 error
203 	int fd = -1;  in nmreq_get_mem_id()
238 	return -1;  in nmreq_get_mem_id()
260 	nr_mem_id = r->nr_mem_id; /* if non-zero, further updates are disabled */  in nmreq_register_decode()
275 			case '-': /* one NIC ring pair */  in nmreq_register_decode()
353 				scan--;	/* escape to options */  in nmreq_register_decode()
395 	r->nr_mode = nr_mode;  in nmreq_register_decode()
396 	r->nr_ringid = nr_ringid;  in nmreq_register_decode()
397 	r->nr_flags = nr_flags;  in nmreq_register_decode()
398 	r->nr_mem_id = nr_mem_id;  in nmreq_register_decode()
405 	return -1;  in nmreq_register_decode()
426 			if (*scan == '-')  in nmreq_option_parsekeys()
432 		for (k = p->keys; (k - p->keys) < NMREQ_OPT_MAXKEYS && k->key != NULL;  in nmreq_option_parsekeys()
434 			if (!strcmp(k->key, key))  in nmreq_option_parsekeys()
438 		nmctx_ferror(pctx->ctx, "unknown key: '%s'", key);  in nmreq_option_parsekeys()
440 		return -1;  in nmreq_option_parsekeys()
442 		if (pctx->keys[k->id] != NULL) {  in nmreq_option_parsekeys()
443 			nmctx_ferror(pctx->ctx, "option '%s': duplicate key '%s', already set to '%s'",  in nmreq_option_parsekeys()
444 					prefix, key, pctx->keys[k->id]);  in nmreq_option_parsekeys()
446 			return -1;  in nmreq_option_parsekeys()
453 		vlen = scan - value;  in nmreq_option_parsekeys()
456 			pctx->keys[k->id] = (vlen ? value : NULL);  in nmreq_option_parsekeys()
458 			if (!(k->flags & NMREQ_OPTK_ALLOWEMPTY)) {  in nmreq_option_parsekeys()
459 				nmctx_ferror(pctx->ctx, "option '%s': missing '=value' for key '%s'",  in nmreq_option_parsekeys()
462 				return -1;  in nmreq_option_parsekeys()
464 			pctx->keys[k->id] = key;  in nmreq_option_parsekeys()
467 	/* now check that all no-default keys have been assigned */  in nmreq_option_parsekeys()
468 	for (k = p->keys; (k - p->keys) < NMREQ_OPT_MAXKEYS && k->key != NULL; k++) {  in nmreq_option_parsekeys()
469 		if ((k->flags & NMREQ_OPTK_MUSTSET) && pctx->keys[k->id] == NULL) {  in nmreq_option_parsekeys()
470 			nmctx_ferror(pctx->ctx, "option '%s': mandatory key '%s' not assigned",  in nmreq_option_parsekeys()
471 					prefix, k->key);  in nmreq_option_parsekeys()
473 			return -1;  in nmreq_option_parsekeys()
482 		void *token, struct nmctx *ctx)  in nmreq_option_decode1()  argument
499 	for (p = parsers; p != NULL; p = p->next) {  in nmreq_option_decode1()
500 		if (!strcmp(prefix, p->prefix))  in nmreq_option_decode1()
506 		return -1;  in nmreq_option_decode1()
508 	if (p->flags & NMREQ_OPTF_DISABLED) {  in nmreq_option_decode1()
511 		return -1;  in nmreq_option_decode1()
515 	pctx.token = token;  in nmreq_option_decode1()
521 		if (!(p->flags & NMREQ_OPTF_ALLOWEMPTY)) {  in nmreq_option_decode1()
525 			return -1;  in nmreq_option_decode1()
529 		if (p->default_key < 0 || p->default_key >= NMREQ_OPT_MAXKEYS) {  in nmreq_option_decode1()
533 			return -1;  in nmreq_option_decode1()
538 			return -1;  in nmreq_option_decode1()
540 		pctx.keys[p->default_key] = scan;  in nmreq_option_decode1()
544 			return -1;  in nmreq_option_decode1()
547 	return p->parse(&pctx);  in nmreq_option_decode1()
552 		void *token, struct nmctx *ctx)  in nmreq_options_decode()  argument
565 		return -1;  in nmreq_options_decode()
575 		len = scan - opt1;  in nmreq_options_decode()
579 			return -1;  in nmreq_options_decode()
585 			return -1;  in nmreq_options_decode()
589 		ret = nmreq_option_decode1(w, parsers, token, ctx);  in nmreq_options_decode()
592 			return -1;  in nmreq_options_decode()
604 		if (o->nro_reqtype == t)  in nmreq_find_option()
615 	for (nmo = (struct nmreq_option **)&h->nr_options; *nmo != NULL;  in nmreq_remove_option()
616 	    nmo = (struct nmreq_option **)&(*nmo)->nro_next) {  in nmreq_remove_option()
618 			*((uint64_t *)(*nmo)) = o->nro_next;  in nmreq_remove_option()
619 			o->nro_next = (uint64_t)(uintptr_t)NULL;  in nmreq_remove_option()
633 	 * modification-safe.  in nmreq_free_options()
635 	for (o = (struct nmreq_option *)(uintptr_t)h->nr_options; o != NULL;  in nmreq_free_options()
637 		next = (struct nmreq_option *)(uintptr_t)o->nro_next;  in nmreq_free_options()
649 		return "sync-kloop-eventfds";  in nmreq_option_name()
653 		return "sync-kloop-mode";  in nmreq_option_name()
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);
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);
680 	if (d->hdr.nr_options) {
681 		struct nmreq_opt_extmem *e = (struct nmreq_opt_extmem *)d->hdr.nr_options;
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);
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);
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);
704 		fprintf(stderr, "usage: %s netmap-expr\n", argv[0]);