1071 static int check_flags(struct bpf_htab *htab, struct htab_elem *l_old,  in check_flags()  argument
1074 	if (l_old && (map_flags & ~BPF_F_LOCK) == BPF_NOEXIST)  in check_flags()
1078 	if (!l_old && (map_flags & ~BPF_F_LOCK) == BPF_EXIST)  in check_flags()
1090 	struct htab_elem *l_new = NULL, *l_old;  in htab_map_update_elem()  local
1115 		l_old = lookup_nulls_elem_raw(head, hash, key, key_size,  in htab_map_update_elem()
1117 		ret = check_flags(htab, l_old, map_flags);  in htab_map_update_elem()
1120 		if (l_old) {  in htab_map_update_elem()
1123 					      l_old->key + round_up(key_size, 8),  in htab_map_update_elem()
1137 	l_old = lookup_elem_raw(head, hash, key, key_size);  in htab_map_update_elem()
1139 	ret = check_flags(htab, l_old, map_flags);  in htab_map_update_elem()
1143 	if (unlikely(l_old && (map_flags & BPF_F_LOCK))) {  in htab_map_update_elem()
1151 				      l_old->key + round_up(key_size, 8),  in htab_map_update_elem()
1158 				l_old);  in htab_map_update_elem()
1169 	if (l_old) {  in htab_map_update_elem()
1170 		hlist_nulls_del_rcu(&l_old->hash_node);  in htab_map_update_elem()
1172 			free_htab_elem(htab, l_old);  in htab_map_update_elem()
1174 			check_and_free_fields(htab, l_old);  in htab_map_update_elem()
1193 	struct htab_elem *l_new, *l_old = NULL;  in htab_lru_map_update_elem()  local
1229 	l_old = lookup_elem_raw(head, hash, key, key_size);  in htab_lru_map_update_elem()
1231 	ret = check_flags(htab, l_old, map_flags);  in htab_lru_map_update_elem()
1239 	if (l_old) {  in htab_lru_map_update_elem()
1241 		hlist_nulls_del_rcu(&l_old->hash_node);  in htab_lru_map_update_elem()
1251 	else if (l_old)  in htab_lru_map_update_elem()
1252 		htab_lru_push_free(htab, l_old);  in htab_lru_map_update_elem()
1262 	struct htab_elem *l_new = NULL, *l_old;  in __htab_percpu_map_update_elem()  local
1287 	l_old = lookup_elem_raw(head, hash, key, key_size);  in __htab_percpu_map_update_elem()
1289 	ret = check_flags(htab, l_old, map_flags);  in __htab_percpu_map_update_elem()
1293 	if (l_old) {  in __htab_percpu_map_update_elem()
1295 		pcpu_copy_value(htab, htab_elem_get_ptr(l_old, key_size),  in __htab_percpu_map_update_elem()
1317 	struct htab_elem *l_new = NULL, *l_old;  in __htab_lru_percpu_map_update_elem()  local
1353 	l_old = lookup_elem_raw(head, hash, key, key_size);  in __htab_lru_percpu_map_update_elem()
1355 	ret = check_flags(htab, l_old, map_flags);  in __htab_lru_percpu_map_update_elem()
1359 	if (l_old) {  in __htab_lru_percpu_map_update_elem()
1360 		bpf_lru_node_set_ref(&l_old->lru_node);  in __htab_lru_percpu_map_update_elem()
1363 		pcpu_copy_value(htab, htab_elem_get_ptr(l_old, key_size),  in __htab_lru_percpu_map_update_elem()