1 /* SPDX-License-Identifier: GPL-2.0 */
5  * Copyright (c) 2017-19 Cumulus Networks
6  * Copyright (c) 2017-19 David Ahern <dsa@cumulusnetworks.com>
144 	struct list_head	fi_list;    /* v4 entries using nh */
264 	return refcount_inc_not_zero(&nh->refcnt);  in nexthop_get()
269 	if (refcount_dec_and_test(&nh->refcnt))  in nexthop_put()
270 		call_rcu_hurry(&nh->rcu, nexthop_free_rcu);  in nexthop_put()
281 	if (nh->is_group) {  in nexthop_is_fdb()
284 		nh_grp = rcu_dereference_rtnl(nh->nh_grp);  in nexthop_is_fdb()
285 		return nh_grp->fdb_nh;  in nexthop_is_fdb()
289 		nhi = rcu_dereference_rtnl(nh->nh_info);  in nexthop_is_fdb()
290 		return nhi->fdb_nh;  in nexthop_is_fdb()
296 	if (nh->is_group) {  in nexthop_has_v4()
299 		nh_grp = rcu_dereference_rtnl(nh->nh_grp);  in nexthop_has_v4()
300 		return nh_grp->has_v4;  in nexthop_has_v4()
307 	if (nh->is_group) {  in nexthop_is_multipath()
310 		nh_grp = rcu_dereference_rtnl(nh->nh_grp);  in nexthop_is_multipath()
311 		return nh_grp->is_multipath;  in nexthop_is_multipath()
322 	if (nh->is_group) {  in nexthop_num_path()
325 		nh_grp = rcu_dereference_rtnl(nh->nh_grp);  in nexthop_num_path()
326 		if (nh_grp->is_multipath)  in nexthop_num_path()
327 			rc = nh_grp->num_nh;  in nexthop_num_path()
339 	if (nhsel >= nhg->num_nh)  in nexthop_mpath_select()
342 	return nhg->nh_entries[nhsel].nh;  in nexthop_mpath_select()
349 	struct nh_group *nhg = rcu_dereference_rtnl(nh->nh_grp);  in nexthop_mpath_fill_node()
352 	for (i = 0; i < nhg->num_nh; i++) {  in nexthop_mpath_fill_node()
353 		struct nexthop *nhe = nhg->nh_entries[i].nh;  in nexthop_mpath_fill_node()
354 		struct nh_info *nhi = rcu_dereference_rtnl(nhe->nh_info);  in nexthop_mpath_fill_node()
355 		struct fib_nh_common *nhc = &nhi->fib_nhc;  in nexthop_mpath_fill_node()
356 		int weight = nhg->nh_entries[i].weight;  in nexthop_mpath_fill_node()
359 			return -EMSGSIZE;  in nexthop_mpath_fill_node()
370 	if (nh->is_group) {  in nexthop_is_blackhole()
373 		nh_grp = rcu_dereference_rtnl(nh->nh_grp);  in nexthop_is_blackhole()
374 		if (nh_grp->num_nh > 1)  in nexthop_is_blackhole()
377 		nh = nh_grp->nh_entries[0].nh;  in nexthop_is_blackhole()
380 	nhi = rcu_dereference_rtnl(nh->nh_info);  in nexthop_is_blackhole()
381 	return nhi->reject_nh;  in nexthop_is_blackhole()
389 	nh = nexthop_select_path(res->fi->nh, hash);  in nexthop_path_fib_result()
390 	nhi = rcu_dereference(nh->nh_info);  in nexthop_path_fib_result()
391 	res->nhc = &nhi->fib_nhc;  in nexthop_path_fib_result()
403 	if (nh->is_group) {  in nexthop_fib_nhc()
406 		nh_grp = rcu_dereference_rtnl(nh->nh_grp);  in nexthop_fib_nhc()
407 		if (nh_grp->is_multipath) {  in nexthop_fib_nhc()
414 	nhi = rcu_dereference_rtnl(nh->nh_info);  in nexthop_fib_nhc()
415 	return &nhi->fib_nhc;  in nexthop_fib_nhc()
427 	if (nh->is_group) {  in nexthop_get_nhc_lookup()
428 		struct nh_group *nhg = rcu_dereference(nh->nh_grp);  in nexthop_get_nhc_lookup()
431 		for (i = 0; i < nhg->num_nh; i++) {  in nexthop_get_nhc_lookup()
432 			struct nexthop *nhe = nhg->nh_entries[i].nh;  in nexthop_get_nhc_lookup()
434 			nhi = rcu_dereference(nhe->nh_info);  in nexthop_get_nhc_lookup()
435 			if (fib_lookup_good_nhc(&nhi->fib_nhc, fib_flags, flp)) {  in nexthop_get_nhc_lookup()
437 				return &nhi->fib_nhc;  in nexthop_get_nhc_lookup()
441 		nhi = rcu_dereference(nh->nh_info);  in nexthop_get_nhc_lookup()
442 		if (fib_lookup_good_nhc(&nhi->fib_nhc, fib_flags, flp)) {  in nexthop_get_nhc_lookup()
444 			return &nhi->fib_nhc;  in nexthop_get_nhc_lookup()
456 	if (nh->is_group) {  in nexthop_uses_dev()
457 		struct nh_group *nhg = rcu_dereference(nh->nh_grp);  in nexthop_uses_dev()
460 		for (i = 0; i < nhg->num_nh; i++) {  in nexthop_uses_dev()
461 			struct nexthop *nhe = nhg->nh_entries[i].nh;  in nexthop_uses_dev()
463 			nhi = rcu_dereference(nhe->nh_info);  in nexthop_uses_dev()
464 			if (nhc_l3mdev_matches_dev(&nhi->fib_nhc, dev))  in nexthop_uses_dev()
468 		nhi = rcu_dereference(nh->nh_info);  in nexthop_uses_dev()
469 		if (nhc_l3mdev_matches_dev(&nhi->fib_nhc, dev))  in nexthop_uses_dev()
478 	if (unlikely(fi->nh))  in fib_info_num_path()
479 		return nexthop_num_path(fi->nh);  in fib_info_num_path()
481 	return fi->fib_nhs;  in fib_info_num_path()
489 	if (unlikely(fi->nh))  in fib_info_nhc()
490 		return nexthop_fib_nhc(fi->nh, nhsel);  in fib_info_nhc()
492 	return &fi->fib_nh[nhsel].nh_common;  in fib_info_nhc()
498 	WARN_ON(fi->nh);  in fib_info_nh()
500 	return &fi->fib_nh[nhsel];  in fib_info_nh()
514 	if (nh->is_group) {  in nexthop_fib6_nh()
517 		nh_grp = rcu_dereference_rtnl(nh->nh_grp);  in nexthop_fib6_nh()
523 	nhi = rcu_dereference_rtnl(nh->nh_info);  in nexthop_fib6_nh()
524 	if (nhi->family == AF_INET6)  in nexthop_fib6_nh()
525 		return &nhi->fib6_nh;  in nexthop_fib6_nh()
534 	fib6_nh = f6i->nh ? nexthop_fib6_nh(f6i->nh) : f6i->fib6_nh;  in fib6_info_nh_dev()
535 	return fib6_nh->fib_nh_dev;  in fib6_info_nh_dev()
540 	struct nexthop *nh = res->f6i->nh;  in nexthop_path_fib6_result()
545 	nhi = rcu_dereference_rtnl(nh->nh_info);  in nexthop_path_fib6_result()
546 	if (nhi->reject_nh) {  in nexthop_path_fib6_result()
547 		res->fib6_type = RTN_BLACKHOLE;  in nexthop_path_fib6_result()
548 		res->fib6_flags |= RTF_REJECT;  in nexthop_path_fib6_result()
549 		res->nh = nexthop_fib6_nh(nh);  in nexthop_path_fib6_result()
551 		res->nh = &nhi->fib6_nh;  in nexthop_path_fib6_result()
561 	struct nh_info *nhi = rcu_dereference_rtnl(nh->nh_info);  in nexthop_get_family()
563 	return nhi->family;  in nexthop_get_family()
569 	struct nh_info *nhi = rcu_dereference_rtnl(nh->nh_info);  in nexthop_fdb_nhc()
571 	return &nhi->fib_nhc;  in nexthop_fdb_nhc()
583 	nhi = rcu_dereference(nhp->nh_info);  in nexthop_path_fdb_result()
584 	return &nhi->fib_nhc;  in nexthop_path_fdb_result()