netfilter/ipvs/ip_vs_mh.c

39 	struct ip_vs_dest __rcu	*dest;	/* real server (cache) */
81 static inline bool is_unavailable(struct ip_vs_dest *dest)
83 	return atomic_read(&dest->weight) <= 0 ||
84 	       dest->flags & IP_VS_DEST_F_OVERLOAD;
109 	struct ip_vs_dest *dest;
113 		dest = rcu_dereference_protected(l->dest, 1);
114 		if (dest) {
115 			ip_vs_dest_put(dest);
116 			RCU_INIT_POINTER(l->dest, NULL);
127 	struct ip_vs_dest *dest;
141 		dest = list_entry(p, struct ip_vs_dest, n_list);
143 		ds->offset = ip_vs_mh_hashkey(svc->af, &dest->addr,
144 					      dest->port, &s->hash1, 0) %
146 		ds->skip = ip_vs_mh_hashkey(svc->af, &dest->addr,
147 					    dest->port, &s->hash2, 0) %
151 		lw = atomic_read(&dest->last_weight);
166 	struct ip_vs_dest *dest, *new_dest;
208 			dest = rcu_dereference_protected(s->lookup[c].dest, 1);
210 			if (dest != new_dest) {
211 				if (dest)
212 					ip_vs_dest_put(dest);
214 				RCU_INIT_POINTER(s->lookup[c].dest, new_dest);
240 	struct ip_vs_dest *dest = rcu_dereference(s->lookup[hash].dest);
242 	return (!dest || is_unavailable(dest)) ? NULL : dest;
252 	struct ip_vs_dest *dest;
254 	/* First try the dest it's supposed to go to */
257 	dest = rcu_dereference(s->lookup[ihash].dest);
258 	if (!dest)
260 	if (!is_unavailable(dest))
261 		return dest;
264 		      IP_VS_DBG_ADDR(dest->af, &dest->addr), ntohs(dest->port));
266 	/* If the original dest is unavailable, loop around the table
267 	 * starting from ihash to find a new dest
273 		dest = rcu_dereference(s->lookup[hash].dest);
274 		if (!dest)
276 		if (!is_unavailable(dest))
277 			return dest;
280 			      IP_VS_DBG_ADDR(dest->af, &dest->addr),
281 			      ntohs(dest->port), roffset);
324 	struct ip_vs_dest *dest;
328 	list_for_each_entry(dest, &svc->destinations, n_list) {
329 		weight = atomic_read(&dest->last_weight);
345 	struct ip_vs_dest *dest;
356 	list_for_each_entry(dest, &svc->destinations, n_list) {
357 		new_weight = atomic_read(&dest->last_weight);
432 				 struct ip_vs_dest *dest)
477 	struct ip_vs_dest *dest;
492 		dest = ip_vs_mh_get_fallback(svc, s, hash_addr, port);
494 		dest = ip_vs_mh_get(svc, s, hash_addr, port);
496 	if (!dest) {
504 		      IP_VS_DBG_ADDR(dest->af, &dest->addr),
505 		      ntohs(dest->port));
507 	return dest;