From 5adef1809147a9c39119ffd5a13a1ca4fe23a411 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 3 Dec 2009 01:25:57 +0000 Subject: [PATCH] net 04/05: fib_rules: allow to delete local rule commit d124356ce314fff22a047ea334379d5105b2d834 Author: Patrick McHardy Date: Thu Dec 3 12:16:35 2009 +0100 net: fib_rules: allow to delete local rule Allow to delete the local rule and recreate it with a higher priority. This can be used to force packets with a local destination out on the wire instead of routing them to loopback. Additionally this patch allows to recreate rules with a priority of 0. Combined with the previous patch to allow oif classification, a socket can be bound to the desired interface and packets routed to the wire like this: # move local rule to lower priority ip rule add pref 1000 lookup local ip rule del pref 0 # route packets of sockets bound to eth0 to the wire independant # of the destination address ip rule add pref 100 oif eth0 lookup 100 ip route add default dev eth0 table 100 Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/core/fib_rules.c | 2 +- net/ipv4/fib_rules.c | 2 +- net/ipv6/fib6_rules.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index d1a70ad4b54..ef0e7d9e664 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -287,7 +287,7 @@ static int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) rule->flags = frh->flags; rule->table = frh_get_table(frh, tb); - if (!rule->pref && ops->default_pref) + if (!tb[FRA_PRIORITY] && ops->default_pref) rule->pref = ops->default_pref(ops); err = -EINVAL; diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c index 835262c2b86..1239ed23cab 100644 --- a/net/ipv4/fib_rules.c +++ b/net/ipv4/fib_rules.c @@ -284,7 +284,7 @@ static int fib_default_rules_init(struct fib_rules_ops *ops) { int err; - err = fib_default_rule_add(ops, 0, RT_TABLE_LOCAL, FIB_RULE_PERMANENT); + err = fib_default_rule_add(ops, 0, RT_TABLE_LOCAL, 0); if (err < 0) return err; err = fib_default_rule_add(ops, 0x7FFE, RT_TABLE_MAIN, 0); diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c index 00a7a5e4ac9..3b38f49f2c2 100644 --- a/net/ipv6/fib6_rules.c +++ b/net/ipv6/fib6_rules.c @@ -276,7 +276,7 @@ static int fib6_rules_net_init(struct net *net) INIT_LIST_HEAD(&net->ipv6.fib6_rules_ops->rules_list); err = fib_default_rule_add(net->ipv6.fib6_rules_ops, 0, - RT6_TABLE_LOCAL, FIB_RULE_PERMANENT); + RT6_TABLE_LOCAL, 0); if (err) goto out_fib6_rules_ops;