49 #define for_fib_info() { struct dn_fib_info *fi;\
50 	for(fi = dn_fib_info_list; fi; fi = fi->fib_next)
53 #define for_nexthops(fi) { int nhsel; const struct dn_fib_nh *nh;\  argument
54 	for(nhsel = 0, nh = (fi)->fib_nh; nhsel < (fi)->fib_nhs; nh++, nhsel++)
56 #define change_nexthops(fi) { int nhsel; struct dn_fib_nh *nh;\  argument
57 	for(nhsel = 0, nh = (struct dn_fib_nh *)((fi)->fib_nh); nhsel < (fi)->fib_nhs; nh++, nhsel++)
59 #define endfor_nexthops(fi) }  argument
87 void dn_fib_free_info(struct dn_fib_info *fi)  in dn_fib_free_info()  argument
89 	if (fi->fib_dead == 0) {  in dn_fib_free_info()
94 	change_nexthops(fi) {  in dn_fib_free_info()
98 	} endfor_nexthops(fi);  in dn_fib_free_info()
99 	kfree(fi);  in dn_fib_free_info()
102 void dn_fib_release_info(struct dn_fib_info *fi)  in dn_fib_release_info()  argument
105 	if (fi && --fi->fib_treeref == 0) {  in dn_fib_release_info()
106 		if (fi->fib_next)  in dn_fib_release_info()
107 			fi->fib_next->fib_prev = fi->fib_prev;  in dn_fib_release_info()
108 		if (fi->fib_prev)  in dn_fib_release_info()
109 			fi->fib_prev->fib_next = fi->fib_next;  in dn_fib_release_info()
110 		if (fi == dn_fib_info_list)  in dn_fib_release_info()
111 			dn_fib_info_list = fi->fib_next;  in dn_fib_release_info()
112 		fi->fib_dead = 1;  in dn_fib_release_info()
113 		dn_fib_info_put(fi);  in dn_fib_release_info()
118 static inline int dn_fib_nh_comp(const struct dn_fib_info *fi, const struct dn_fib_info *ofi)  in dn_fib_nh_comp()  argument
122 	for_nexthops(fi) {  in dn_fib_nh_comp()
130 	} endfor_nexthops(fi);  in dn_fib_nh_comp()
137 		if (fi->fib_nhs != nfi->fib_nhs)  in dn_fib_find_info()
139 		if (nfi->fib_protocol == fi->fib_protocol &&  in dn_fib_find_info()
140 			nfi->fib_prefsrc == fi->fib_prefsrc &&  in dn_fib_find_info()
141 			nfi->fib_priority == fi->fib_priority &&  in dn_fib_find_info()
142 			memcmp(nfi->fib_metrics, fi->fib_metrics, sizeof(fi->fib_metrics)) == 0 &&  in dn_fib_find_info()
143 			((nfi->fib_flags^fi->fib_flags)&~RTNH_F_DEAD) == 0 &&  in dn_fib_find_info()
144 			(nfi->fib_nhs == 0 || dn_fib_nh_comp(fi, nfi) == 0))  in dn_fib_find_info()
145 				return fi;  in dn_fib_find_info()
164 static int dn_fib_get_nhs(struct dn_fib_info *fi, const struct nlattr *attr,  in dn_fib_get_nhs()  argument
170 	change_nexthops(fi) {  in dn_fib_get_nhs()
189 	} endfor_nexthops(fi);  in dn_fib_get_nhs()
195 static int dn_fib_check_nh(const struct rtmsg *r, struct dn_fib_info *fi, struct dn_fib_nh *nh)  in dn_fib_check_nh()  argument
271 	struct dn_fib_info *fi = NULL;  in dn_fib_create_info()  local
285 	fi = kzalloc(sizeof(*fi)+nhs*sizeof(struct dn_fib_nh), GFP_KERNEL);  in dn_fib_create_info()
287 	if (fi == NULL)  in dn_fib_create_info()
290 	fi->fib_protocol = r->rtm_protocol;  in dn_fib_create_info()
291 	fi->fib_nhs = nhs;  in dn_fib_create_info()
292 	fi->fib_flags = r->rtm_flags;  in dn_fib_create_info()
295 		fi->fib_priority = nla_get_u32(attrs[RTA_PRIORITY]);  in dn_fib_create_info()
309 				fi->fib_metrics[type-1] = nla_get_u32(attr);  in dn_fib_create_info()
315 		fi->fib_prefsrc = nla_get_le16(attrs[RTA_PREFSRC]);  in dn_fib_create_info()
318 		if ((err = dn_fib_get_nhs(fi, attrs[RTA_MULTIPATH], r)) != 0)  in dn_fib_create_info()
322 		    fi->fib_nh->nh_oif != nla_get_u32(attrs[RTA_OIF]))  in dn_fib_create_info()
326 		    fi->fib_nh->nh_gw != nla_get_le16(attrs[RTA_GATEWAY]))  in dn_fib_create_info()
329 		struct dn_fib_nh *nh = fi->fib_nh;  in dn_fib_create_info()
345 		fi->fib_nh->nh_gw = nla_get_le16(attrs[RTA_GATEWAY]);  in dn_fib_create_info()
360 		struct dn_fib_nh *nh = fi->fib_nh;  in dn_fib_create_info()
366 		nh->nh_dev = dev_get_by_index(&init_net, fi->fib_nh->nh_oif);  in dn_fib_create_info()
371 		change_nexthops(fi) {  in dn_fib_create_info()
372 			if ((err = dn_fib_check_nh(r, fi, nh)) != 0)  in dn_fib_create_info()
374 		} endfor_nexthops(fi)  in dn_fib_create_info()
377 	if (fi->fib_prefsrc) {  in dn_fib_create_info()
379 		    fi->fib_prefsrc != nla_get_le16(attrs[RTA_DST]))  in dn_fib_create_info()
380 			if (dnet_addr_type(fi->fib_prefsrc) != RTN_LOCAL)  in dn_fib_create_info()
385 	if ((ofi = dn_fib_find_info(fi)) != NULL) {  in dn_fib_create_info()
386 		fi->fib_dead = 1;  in dn_fib_create_info()
387 		dn_fib_free_info(fi);  in dn_fib_create_info()
392 	fi->fib_treeref++;  in dn_fib_create_info()
393 	refcount_set(&fi->fib_clntref, 1);  in dn_fib_create_info()
395 	fi->fib_next = dn_fib_info_list;  in dn_fib_create_info()
396 	fi->fib_prev = NULL;  in dn_fib_create_info()
398 		dn_fib_info_list->fib_prev = fi;  in dn_fib_create_info()
399 	dn_fib_info_list = fi;  in dn_fib_create_info()
401 	return fi;  in dn_fib_create_info()
408 	if (fi) {  in dn_fib_create_info()
409 		fi->fib_dead = 1;  in dn_fib_create_info()
410 		dn_fib_free_info(fi);  in dn_fib_create_info()
416 int dn_fib_semantic_match(int type, struct dn_fib_info *fi, const struct flowidn *fld, struct dn_fi…  in dn_fib_semantic_match()  argument
421 		if (fi->fib_flags & RTNH_F_DEAD)  in dn_fib_semantic_match()
424 		res->fi = fi;  in dn_fib_semantic_match()
429 			refcount_inc(&fi->fib_clntref);  in dn_fib_semantic_match()
433 			for_nexthops(fi) {  in dn_fib_semantic_match()
440 			if (nhsel < fi->fib_nhs) {  in dn_fib_semantic_match()
442 				refcount_inc(&fi->fib_clntref);  in dn_fib_semantic_match()
445 			endfor_nexthops(fi);  in dn_fib_semantic_match()
446 			res->fi = NULL;  in dn_fib_semantic_match()
451 			res->fi = NULL;  in dn_fib_semantic_match()
460 	struct dn_fib_info *fi = res->fi;  in dn_fib_select_multipath()  local
464 	if (fi->fib_power <= 0) {  in dn_fib_select_multipath()
466 		change_nexthops(fi) {  in dn_fib_select_multipath()
471 		} endfor_nexthops(fi);  in dn_fib_select_multipath()
472 		fi->fib_power = power;  in dn_fib_select_multipath()
480 	w = jiffies % fi->fib_power;  in dn_fib_select_multipath()
482 	change_nexthops(fi) {  in dn_fib_select_multipath()
486 				fi->fib_power--;  in dn_fib_select_multipath()
492 	} endfor_nexthops(fi);  in dn_fib_select_multipath()
712 		if (local && fi->fib_prefsrc == local) {  in dn_fib_sync_down()
713 			fi->fib_flags |= RTNH_F_DEAD;  in dn_fib_sync_down()
715 		} else if (dev && fi->fib_nhs) {  in dn_fib_sync_down()
718 			change_nexthops(fi) {  in dn_fib_sync_down()
725 					fi->fib_power -= nh->nh_power;  in dn_fib_sync_down()
730 			} endfor_nexthops(fi)  in dn_fib_sync_down()
731 			if (dead == fi->fib_nhs) {  in dn_fib_sync_down()
732 				fi->fib_flags |= RTNH_F_DEAD;  in dn_fib_sync_down()
751 		change_nexthops(fi) {  in dn_fib_sync_up()
765 		} endfor_nexthops(fi);  in dn_fib_sync_up()
768 			fi->fib_flags &= ~RTNH_F_DEAD;  in dn_fib_sync_up()