47 #define for_fib_info() { struct dn_fib_info *fi;\
48 	for(fi = dn_fib_info_list; fi; fi = fi->fib_next)
51 #define for_nexthops(fi) { int nhsel; const struct dn_fib_nh *nh;\  argument
52 	for(nhsel = 0, nh = (fi)->fib_nh; nhsel < (fi)->fib_nhs; nh++, nhsel++)
54 #define change_nexthops(fi) { int nhsel; struct dn_fib_nh *nh;\  argument
55 	for(nhsel = 0, nh = (struct dn_fib_nh *)((fi)->fib_nh); nhsel < (fi)->fib_nhs; nh++, nhsel++)
57 #define endfor_nexthops(fi) }  argument
85 void dn_fib_free_info(struct dn_fib_info *fi)  in dn_fib_free_info()  argument
87 	if (fi->fib_dead == 0) {  in dn_fib_free_info()
92 	change_nexthops(fi) {  in dn_fib_free_info()
96 	} endfor_nexthops(fi);  in dn_fib_free_info()
97 	kfree(fi);  in dn_fib_free_info()
100 void dn_fib_release_info(struct dn_fib_info *fi)  in dn_fib_release_info()  argument
103 	if (fi && --fi->fib_treeref == 0) {  in dn_fib_release_info()
104 		if (fi->fib_next)  in dn_fib_release_info()
105 			fi->fib_next->fib_prev = fi->fib_prev;  in dn_fib_release_info()
106 		if (fi->fib_prev)  in dn_fib_release_info()
107 			fi->fib_prev->fib_next = fi->fib_next;  in dn_fib_release_info()
108 		if (fi == dn_fib_info_list)  in dn_fib_release_info()
109 			dn_fib_info_list = fi->fib_next;  in dn_fib_release_info()
110 		fi->fib_dead = 1;  in dn_fib_release_info()
111 		dn_fib_info_put(fi);  in dn_fib_release_info()
116 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
120 	for_nexthops(fi) {  in dn_fib_nh_comp()
128 	} endfor_nexthops(fi);  in dn_fib_nh_comp()
135 		if (fi->fib_nhs != nfi->fib_nhs)  in dn_fib_find_info()
137 		if (nfi->fib_protocol == fi->fib_protocol &&  in dn_fib_find_info()
138 			nfi->fib_prefsrc == fi->fib_prefsrc &&  in dn_fib_find_info()
139 			nfi->fib_priority == fi->fib_priority &&  in dn_fib_find_info()
140 			memcmp(nfi->fib_metrics, fi->fib_metrics, sizeof(fi->fib_metrics)) == 0 &&  in dn_fib_find_info()
141 			((nfi->fib_flags^fi->fib_flags)&~RTNH_F_DEAD) == 0 &&  in dn_fib_find_info()
142 			(nfi->fib_nhs == 0 || dn_fib_nh_comp(fi, nfi) == 0))  in dn_fib_find_info()
143 				return fi;  in dn_fib_find_info()
163 static int dn_fib_get_nhs(struct dn_fib_info *fi, const struct nlattr *attr,  in dn_fib_get_nhs()  argument
169 	change_nexthops(fi) {  in dn_fib_get_nhs()
185 	} endfor_nexthops(fi);  in dn_fib_get_nhs()
191 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
267 	struct dn_fib_info *fi = NULL;  in dn_fib_create_info()  local
281 	fi = kzalloc(sizeof(*fi)+nhs*sizeof(struct dn_fib_nh), GFP_KERNEL);  in dn_fib_create_info()
283 	if (fi == NULL)  in dn_fib_create_info()
286 	fi->fib_protocol = r->rtm_protocol;  in dn_fib_create_info()
287 	fi->fib_nhs = nhs;  in dn_fib_create_info()
288 	fi->fib_flags = r->rtm_flags;  in dn_fib_create_info()
291 		fi->fib_priority = nla_get_u32(attrs[RTA_PRIORITY]);  in dn_fib_create_info()
305 				fi->fib_metrics[type-1] = nla_get_u32(attr);  in dn_fib_create_info()
311 		fi->fib_prefsrc = nla_get_le16(attrs[RTA_PREFSRC]);  in dn_fib_create_info()
314 		if ((err = dn_fib_get_nhs(fi, attrs[RTA_MULTIPATH], r)) != 0)  in dn_fib_create_info()
318 		    fi->fib_nh->nh_oif != nla_get_u32(attrs[RTA_OIF]))  in dn_fib_create_info()
322 		    fi->fib_nh->nh_gw != nla_get_le16(attrs[RTA_GATEWAY]))  in dn_fib_create_info()
325 		struct dn_fib_nh *nh = fi->fib_nh;  in dn_fib_create_info()
341 		fi->fib_nh->nh_gw = nla_get_le16(attrs[RTA_GATEWAY]);  in dn_fib_create_info()
356 		struct dn_fib_nh *nh = fi->fib_nh;  in dn_fib_create_info()
362 		nh->nh_dev = dev_get_by_index(&init_net, fi->fib_nh->nh_oif);  in dn_fib_create_info()
367 		change_nexthops(fi) {  in dn_fib_create_info()
368 			if ((err = dn_fib_check_nh(r, fi, nh)) != 0)  in dn_fib_create_info()
370 		} endfor_nexthops(fi)  in dn_fib_create_info()
373 	if (fi->fib_prefsrc) {  in dn_fib_create_info()
375 		    fi->fib_prefsrc != nla_get_le16(attrs[RTA_DST]))  in dn_fib_create_info()
376 			if (dnet_addr_type(fi->fib_prefsrc) != RTN_LOCAL)  in dn_fib_create_info()
381 	if ((ofi = dn_fib_find_info(fi)) != NULL) {  in dn_fib_create_info()
382 		fi->fib_dead = 1;  in dn_fib_create_info()
383 		dn_fib_free_info(fi);  in dn_fib_create_info()
388 	fi->fib_treeref++;  in dn_fib_create_info()
389 	atomic_inc(&fi->fib_clntref);  in dn_fib_create_info()
391 	fi->fib_next = dn_fib_info_list;  in dn_fib_create_info()
392 	fi->fib_prev = NULL;  in dn_fib_create_info()
394 		dn_fib_info_list->fib_prev = fi;  in dn_fib_create_info()
395 	dn_fib_info_list = fi;  in dn_fib_create_info()
397 	return fi;  in dn_fib_create_info()
404 	if (fi) {  in dn_fib_create_info()
405 		fi->fib_dead = 1;  in dn_fib_create_info()
406 		dn_fib_free_info(fi);  in dn_fib_create_info()
412 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
417 		if (fi->fib_flags & RTNH_F_DEAD)  in dn_fib_semantic_match()
420 		res->fi = fi;  in dn_fib_semantic_match()
425 			atomic_inc(&fi->fib_clntref);  in dn_fib_semantic_match()
429 			for_nexthops(fi) {  in dn_fib_semantic_match()
436 			if (nhsel < fi->fib_nhs) {  in dn_fib_semantic_match()
438 				atomic_inc(&fi->fib_clntref);  in dn_fib_semantic_match()
441 			endfor_nexthops(fi);  in dn_fib_semantic_match()
442 			res->fi = NULL;  in dn_fib_semantic_match()
447 			res->fi = NULL;  in dn_fib_semantic_match()
456 	struct dn_fib_info *fi = res->fi;  in dn_fib_select_multipath()  local
460 	if (fi->fib_power <= 0) {  in dn_fib_select_multipath()
462 		change_nexthops(fi) {  in dn_fib_select_multipath()
467 		} endfor_nexthops(fi);  in dn_fib_select_multipath()
468 		fi->fib_power = power;  in dn_fib_select_multipath()
476 	w = jiffies % fi->fib_power;  in dn_fib_select_multipath()
478 	change_nexthops(fi) {  in dn_fib_select_multipath()
482 				fi->fib_power--;  in dn_fib_select_multipath()
488 	} endfor_nexthops(fi);  in dn_fib_select_multipath()
704 		if (local && fi->fib_prefsrc == local) {  in dn_fib_sync_down()
705 			fi->fib_flags |= RTNH_F_DEAD;  in dn_fib_sync_down()
707 		} else if (dev && fi->fib_nhs) {  in dn_fib_sync_down()
710 			change_nexthops(fi) {  in dn_fib_sync_down()
717 					fi->fib_power -= nh->nh_power;  in dn_fib_sync_down()
722 			} endfor_nexthops(fi)  in dn_fib_sync_down()
723 			if (dead == fi->fib_nhs) {  in dn_fib_sync_down()
724 				fi->fib_flags |= RTNH_F_DEAD;  in dn_fib_sync_down()
743 		change_nexthops(fi) {  in dn_fib_sync_up()
757 		} endfor_nexthops(fi);  in dn_fib_sync_up()
760 			fi->fib_flags &= ~RTNH_F_DEAD;  in dn_fib_sync_up()