diff options
Diffstat (limited to 'net/ipv6/fib6_rules.c')
-rw-r--r-- | net/ipv6/fib6_rules.c | 62 |
1 files changed, 38 insertions, 24 deletions
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c index fafe556d21e0..7c2003833010 100644 --- a/net/ipv6/fib6_rules.c +++ b/net/ipv6/fib6_rules.c @@ -13,8 +13,10 @@ #include <linux/netdevice.h> #include <linux/notifier.h> #include <linux/export.h> +#include <linux/indirect_call_wrapper.h> #include <net/fib_rules.h> +#include <net/inet_dscp.h> #include <net/ipv6.h> #include <net/addrconf.h> #include <net/ip6_route.h> @@ -24,14 +26,14 @@ struct fib6_rule { struct fib_rule common; struct rt6key src; struct rt6key dst; - u8 tclass; + dscp_t dscp; }; static bool fib6_rule_matchall(const struct fib_rule *rule) { struct fib6_rule *r = container_of(rule, struct fib6_rule, common); - if (r->dst.plen || r->src.plen || r->tclass) + if (r->dst.plen || r->src.plen || r->dscp) return false; return fib_rule_matchall(rule); } @@ -111,11 +113,13 @@ struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6, } else { struct rt6_info *rt; - rt = lookup(net, net->ipv6.fib6_local_tbl, fl6, skb, flags); + rt = pol_lookup_func(lookup, + net, net->ipv6.fib6_local_tbl, fl6, skb, flags); if (rt != net->ipv6.ip6_null_entry && rt->dst.error != -EAGAIN) return &rt->dst; ip6_rt_put_flags(rt, flags); - rt = lookup(net, net->ipv6.fib6_main_tbl, fl6, skb, flags); + rt = pol_lookup_func(lookup, + net, net->ipv6.fib6_main_tbl, fl6, skb, flags); if (rt->dst.error != -EAGAIN) return &rt->dst; ip6_rt_put_flags(rt, flags); @@ -226,7 +230,8 @@ static int __fib6_rule_action(struct fib_rule *rule, struct flowi *flp, goto out; } - rt = lookup(net, table, flp6, arg->lookup_data, flags); + rt = pol_lookup_func(lookup, + net, table, flp6, arg->lookup_data, flags); if (rt != net->ipv6.ip6_null_entry) { err = fib6_rule_saddr(net, rule, flags, flp6, ip6_dst_idev(&rt->dst)->dev); @@ -252,8 +257,9 @@ out: return err; } -static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp, - int flags, struct fib_lookup_arg *arg) +INDIRECT_CALLABLE_SCOPE int fib6_rule_action(struct fib_rule *rule, + struct flowi *flp, int flags, + struct fib_lookup_arg *arg) { if (arg->lookup_ptr == fib6_table_lookup) return fib6_rule_action_alt(rule, flp, flags, arg); @@ -261,7 +267,9 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp, return __fib6_rule_action(rule, flp, flags, arg); } -static bool fib6_rule_suppress(struct fib_rule *rule, struct fib_lookup_arg *arg) +INDIRECT_CALLABLE_SCOPE bool fib6_rule_suppress(struct fib_rule *rule, + int flags, + struct fib_lookup_arg *arg) { struct fib6_result *res = arg->result; struct rt6_info *rt = res->rt6; @@ -288,12 +296,12 @@ static bool fib6_rule_suppress(struct fib_rule *rule, struct fib_lookup_arg *arg return false; suppress_route: - if (!(arg->flags & FIB_LOOKUP_NOREF)) - ip6_rt_put(rt); + ip6_rt_put_flags(rt, flags); return true; } -static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) +INDIRECT_CALLABLE_SCOPE int fib6_rule_match(struct fib_rule *rule, + struct flowi *fl, int flags) { struct fib6_rule *r = (struct fib6_rule *) rule; struct flowi6 *fl6 = &fl->u.ip6; @@ -316,7 +324,7 @@ static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) return 0; } - if (r->tclass && r->tclass != ip6_tclass(fl6->flowlabel)) + if (r->dscp && r->dscp != ip6_dscp(fl6->flowlabel)) return 0; if (rule->ip_proto && (rule->ip_proto != fl6->flowi6_proto)) @@ -333,10 +341,6 @@ static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) return 1; } -static const struct nla_policy fib6_rule_policy[FRA_MAX+1] = { - FRA_GENERIC_POLICY, -}; - static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb, struct fib_rule_hdr *frh, struct nlattr **tb, @@ -346,6 +350,13 @@ static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb, struct net *net = sock_net(skb->sk); struct fib6_rule *rule6 = (struct fib6_rule *) rule; + if (!inet_validate_dscp(frh->tos)) { + NL_SET_ERR_MSG(extack, + "Invalid dsfield (tos): ECN bits must be 0"); + goto errout; + } + rule6->dscp = inet_dsfield_to_dscp(frh->tos); + if (rule->action == FR_ACT_TO_TBL && !rule->l3mdev) { if (rule->table == RT6_TABLE_UNSPEC) { NL_SET_ERR_MSG(extack, "Invalid table"); @@ -366,7 +377,6 @@ static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb, rule6->src.plen = frh->src_len; rule6->dst.plen = frh->dst_len; - rule6->tclass = frh->tos; if (fib_rule_requires_fldissect(rule)) net->ipv6.fib6_rules_require_fldissect++; @@ -399,7 +409,7 @@ static int fib6_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh, if (frh->dst_len && (rule6->dst.plen != frh->dst_len)) return 0; - if (frh->tos && (rule6->tclass != frh->tos)) + if (frh->tos && inet_dscp_to_dsfield(rule6->dscp) != frh->tos) return 0; if (frh->src_len && @@ -420,7 +430,7 @@ static int fib6_rule_fill(struct fib_rule *rule, struct sk_buff *skb, frh->dst_len = rule6->dst.plen; frh->src_len = rule6->src.plen; - frh->tos = rule6->tclass; + frh->tos = inet_dscp_to_dsfield(rule6->dscp); if ((rule6->dst.plen && nla_put_in6_addr(skb, FRA_DST, &rule6->dst.addr)) || @@ -452,7 +462,6 @@ static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = { .fill = fib6_rule_fill, .nlmsg_payload = fib6_rule_nlmsg_payload, .nlgroup = RTNLGRP_IPV6_RULE, - .policy = fib6_rule_policy, .owner = THIS_MODULE, .fro_net = &init_net, }; @@ -460,7 +469,7 @@ static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = { static int __net_init fib6_rules_net_init(struct net *net) { struct fib_rules_ops *ops; - int err = -ENOMEM; + int err; ops = fib_rules_register(&fib6_rules_ops_template, net); if (IS_ERR(ops)) @@ -484,16 +493,21 @@ out_fib6_rules_ops: goto out; } -static void __net_exit fib6_rules_net_exit(struct net *net) +static void __net_exit fib6_rules_net_exit_batch(struct list_head *net_list) { + struct net *net; + rtnl_lock(); - fib_rules_unregister(net->ipv6.fib6_rules_ops); + list_for_each_entry(net, net_list, exit_list) { + fib_rules_unregister(net->ipv6.fib6_rules_ops); + cond_resched(); + } rtnl_unlock(); } static struct pernet_operations fib6_rules_net_ops = { .init = fib6_rules_net_init, - .exit = fib6_rules_net_exit, + .exit_batch = fib6_rules_net_exit_batch, }; int __init fib6_rules_init(void) |