3  * net/ipv6/fib6_rules.c	IPv6 Routing Policy Rules
18 #include <net/fib_rules.h>
19 #include <net/inet_dscp.h>
20 #include <net/ipv6.h>
21 #include <net/addrconf.h>
22 #include <net/ip6_route.h>
23 #include <net/netlink.h>
52 int fib6_rules_dump(struct net *net, struct notifier_block *nb,  in fib6_rules_dump()  argument
55 	return fib_rules_dump(net, nb, AF_INET6, extack);  in fib6_rules_dump()
58 unsigned int fib6_rules_seq_read(struct net *net)  in fib6_rules_seq_read()  argument
60 	return fib_rules_seq_read(net, AF_INET6);  in fib6_rules_seq_read()
64 int fib6_lookup(struct net *net, int oif, struct flowi6 *fl6,  in fib6_lookup()  argument
69 	if (net->ipv6.fib6_has_custom_rules) {  in fib6_lookup()
77 		l3mdev_update_flow(net, flowi6_to_flowi(fl6));  in fib6_lookup()
79 		err = fib_rules_lookup(net->ipv6.fib6_rules_ops,  in fib6_lookup()
82 		err = fib6_table_lookup(net, net->ipv6.fib6_local_tbl, oif,  in fib6_lookup()
84 		if (err || res->f6i == net->ipv6.fib6_null_entry)  in fib6_lookup()
85 			err = fib6_table_lookup(net, net->ipv6.fib6_main_tbl,  in fib6_lookup()
92 struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6,  in fib6_rule_lookup()  argument
96 	if (net->ipv6.fib6_has_custom_rules) {  in fib6_rule_lookup()
106 		l3mdev_update_flow(net, flowi6_to_flowi(fl6));  in fib6_rule_lookup()
108 		fib_rules_lookup(net->ipv6.fib6_rules_ops,  in fib6_rule_lookup()
117 			     net, net->ipv6.fib6_local_tbl, fl6, skb, flags);  in fib6_rule_lookup()
118 		if (rt != net->ipv6.ip6_null_entry && rt->dst.error != -EAGAIN)  in fib6_rule_lookup()
122 			     net, net->ipv6.fib6_main_tbl, fl6, skb, flags);  in fib6_rule_lookup()
129 		dst_hold(&net->ipv6.ip6_null_entry->dst);  in fib6_rule_lookup()
130 	return &net->ipv6.ip6_null_entry->dst;  in fib6_rule_lookup()
133 static int fib6_rule_saddr(struct net *net, struct fib_rule *rule, int flags,  in fib6_rule_saddr()  argument
145 		if (ipv6_dev_get_saddr(net, dev, &flp6->daddr,  in fib6_rule_saddr()
163 	struct net *net = rule->fr_net;  in fib6_rule_action_alt()  local
181 	table = fib6_get_table(net, tb_id);  in fib6_rule_action_alt()
186 	err = fib6_table_lookup(net, table, *oif, flp6, res, flags);  in fib6_rule_action_alt()
187 	if (!err && res->f6i != net->ipv6.fib6_null_entry)  in fib6_rule_action_alt()
188 		err = fib6_rule_saddr(net, rule, flags, flp6,  in fib6_rule_action_alt()
203 	struct net *net = rule->fr_net;  in __fib6_rule_action()  local
213 		rt = net->ipv6.ip6_null_entry;  in __fib6_rule_action()
218 		rt = net->ipv6.ip6_blk_hole_entry;  in __fib6_rule_action()
222 		rt = net->ipv6.ip6_prohibit_entry;  in __fib6_rule_action()
227 	table = fib6_get_table(net, tb_id);  in __fib6_rule_action()
234 			     net, table, flp6, arg->lookup_data, flags);  in __fib6_rule_action()
235 	if (rt != net->ipv6.ip6_null_entry) {  in __fib6_rule_action()
236 		err = fib6_rule_saddr(net, rule, flags, flp6,  in __fib6_rule_action()
350 	struct net *net = sock_net(skb->sk);  in fib6_rule_configure()  local
366 		if (fib6_new_table(net, rule->table) == NULL) {  in fib6_rule_configure()
382 		net->ipv6.fib6_rules_require_fldissect++;  in fib6_rule_configure()
384 	net->ipv6.fib6_has_custom_rules = true;  in fib6_rule_configure()
392 	struct net *net = rule->fr_net;  in fib6_rule_delete()  local
394 	if (net->ipv6.fib6_rules_require_fldissect &&  in fib6_rule_delete()
396 		net->ipv6.fib6_rules_require_fldissect--;  in fib6_rule_delete()
469 static int __net_init fib6_rules_net_init(struct net *net)  in fib6_rules_net_init()  argument
474 	ops = fib_rules_register(&fib6_rules_ops_template, net);  in fib6_rules_net_init()
486 	net->ipv6.fib6_rules_ops = ops;  in fib6_rules_net_init()
487 	net->ipv6.fib6_rules_require_fldissect = 0;  in fib6_rules_net_init()
498 	struct net *net;  in fib6_rules_net_exit_batch()  local
501 	list_for_each_entry(net, net_list, exit_list) {  in fib6_rules_net_exit_batch()
502 		fib_rules_unregister(net->ipv6.fib6_rules_ops);  in fib6_rules_net_exit_batch()