dev/netmap/netmap.c

468 #error	Unsupported platform
1382  * Otherwise return an error code, with *na containing NULL.
1408 	int error = 0;
1458 	error = generic_netmap_attach(ifp);
1459 	if (error)
1460 		return error;
1497 	int error = 0;
1529 	 * All netmap_get_*_na() functions return an error and an na,
1532 	 * error    na
1538 	error = netmap_get_null_na(hdr, na, nmd, create);
1539 	if (error || *na != NULL)
1543 	error = netmap_get_monitor_na(hdr, na, nmd, create);
1544 	if (error || *na != NULL)
1548 	error = netmap_get_pipe_na(hdr, na, nmd, create);
1549 	if (error || *na != NULL)
1553 	error = netmap_get_vale_na(hdr, na, nmd, create);
1554 	if (error)
1568 		error = ENXIO;
1572 	error = netmap_get_hw_na(*ifp, nmd, &ret);
1573 	if (error)
1580 	if (error) {
1591 	return error;
1622  * in case of error.
1687  * Returns ring->head if ok, kring->nkr_num_slots on error.
1747  * Error routine called when txsync/rxsync detects an error.
1754  * a tx ring and only to increase it, so any error will be recovered
1896 	int error;
1899 	error = netmap_interp_ringid(priv, nr_mode, nr_ringid, nr_flags);
1900 	if (error) {
1901 		return error;
2143 			nm_prerr("error: netmap buf size (%u) "
2154 			nm_prerr("error: large MTU (%d) needed "
2160 			nm_prerr("error: using NS_MOREFRAG on "
2252 	int error;
2256 	error = netmap_mem_finalize(na->nm_mem, na);
2257 	if (error)
2263 		error = netmap_mem_get_lut(na->nm_mem, &na->na_lut);
2264 		if (error)
2274 	error = netmap_set_ringid(priv, nr_mode, nr_ringid, nr_flags);
2275 	if (error)
2292 				nm_prerr("%s: error: rx_buf_maxsize == 0", na->name);
2293 				error = EIO;
2297 			error = netmap_buf_size_validate(na, mtu);
2298 			if (error)
2306 		error = na->nm_krings_create(na);
2307 		if (error)
2316 	error = netmap_krings_get(priv);
2317 	if (error)
2321 	error = netmap_mem_rings_create(na);
2322 	if (error)
2328 		error = ENOMEM;
2335 		error = na->nm_register(na, 1);
2336 		if (error)
2368 	return error;
2424 	int error = 0;
2447 		error = nmreq_copyin(hdr, nr_body_is_user);
2448 		if (error) {
2449 			return error;
2468 					error = EBUSY;
2479 					error = nmreq_checkduplicate(opt);
2480 					if (error) {
2481 						opt->nro_status = error;
2485 							&e->nro_info, &error);
2486 					opt->nro_status = error;
2500 						error = EINVAL;
2505 				error = netmap_get_na(hdr, &na, &ifp, nmd,
2507 				if (error)
2510 					error = EBUSY;
2517 					error = EIO;
2521 				error = netmap_do_regif(priv, na, req->nr_mode,
2523 				if (error) {    /* reg. failed, release priv and ref */
2532 					error = nmreq_checkduplicate(opt);
2533 					if (!error) {
2534 						error = netmap_csb_validate(priv, csbo);
2536 					opt->nro_status = error;
2537 					if (error) {
2550 				error = netmap_mem_get_info(na->nm_mem, &req->nr_memsize, &memflags,
2552 				if (error) {
2575 				error = nmreq_checkoptions(hdr);
2576 				if (error) {
2584 			if (error) {
2620 					error = netmap_get_na(hdr, &na, &ifp, NULL, 1 /* create */);
2623 					if (error) {
2636 						error = EINVAL;
2642 				error = netmap_mem_get_info(nmd, &req->nr_memsize, &memflags,
2644 				if (error)
2662 			error = netmap_vale_attach(hdr, NULL /* userspace request */);
2667 			error = netmap_vale_detach(hdr, NULL /* userspace request */);
2672 			error = netmap_vale_list(hdr);
2693 				error = EINVAL;
2699 			error = netmap_get_vale_na(hdr, &na, NULL, 0);
2702 			if (na && !error) {
2713 				error = ENXIO;
2733 			error = netmap_get_na(hdr, &na, &ifp, NULL, 0);
2736 			if (na && !error) {
2745 			error = nm_vi_create(hdr);
2750 			error = nm_vi_destroy(hdr->nr_name);
2756 			error = nm_bdg_polling(hdr);
2776 				error = netmap_get_na(hdr, &na, &ifp, NULL, 1 /* create */);
2779 				if (error) {
2786 					error = EINVAL;
2792 				error = netmap_mem_finalize(nmd, na);
2793 				if (error) {
2796 				error = netmap_mem_pools_info_get(req, nmd);
2810 				error = EINVAL;
2814 				error = nmreq_checkduplicate(opt);
2815 				if (!error) {
2817 					error = netmap_csb_validate(priv, csbo);
2820 				opt->nro_status = error;
2826 			error = netmap_sync_kloop(priv, hdr);
2831 			error = netmap_sync_kloop_stop(priv);
2836 			error = EINVAL;
2842 		error = nmreq_copyout(hdr, error);
2849 			error = ENXIO;
2856 			error = EBUSY;
2873 			if (unlikely(nm_kr_tryget(kring, 1, &error))) {
2874 				error = (error ? EIO : 0);
2921 	return (error);
2991 	int error;
3011 		error = EMSGSIZE;
3020 		error = EINVAL;
3029 		error = copyin(src, &buf, sizeof(*src));
3030 		if (error)
3035 			error = EMSGSIZE;
3043 		error = ENOMEM;
3055 	error = copyin((void *)(uintptr_t)hdr->nr_body, p, rqsz);
3056 	if (error)
3071 		error = copyin(src, opt, sizeof(*src));
3072 		if (error)
3091 			error = copyin(src + 1, p, optsz);
3092 			if (error)
3110 	return error;
3120 	int error;
3135 		error = copyout(ker, (void *)(uintptr_t)hdr->nr_body, bodysz);
3136 		if (error) {
3137 			rerror = error;
3154 		error = copyout(src, dst, sizeof(*src));
3155 		if (error) {
3156 			rerror = error;
3160 		/* copy the option body only if there was no error */
3165 				error = copyout(src + 1, dst + 1, optsz);
3166 				if (error) {
3167 					rerror = error;
3209 	/* return error if there is still any option
3621 	int error = 0;
3627 			error = ENXIO;
3634 	error = hwna->nm_hw_register(na, onoff);
3639 	return error;
3817 	 * turned on, so that they can stop and return an error to userspace.
3845 	u_int error = ENOBUFS;
3863 		error = ENXIO;
3921 		error = 0;
3935 	return (error);
4187 	int error;
4191 	error = netmap_mem_init();
4192 	if (error != 0)
4197 	 * XXX could use make_dev_credv() to get error number
4205 	error = netmap_init_bridges();
4206 	if (error)
4213 	error = nm_os_ifnet_init();
4214 	if (error)