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authorThomas Graf <tgraf@suug.ch>2007-03-27 13:56:52 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:28:18 -0700
commit73417f617a93cf30342c3ea41abc38927bd467aa (patch)
tree6093005afdca1825197758d851ca5f275d62356f /net/ipv4/fib_rules.c
parentbe776281aee54626a474ba06f91926b98bdd180d (diff)
downloadop-kernel-dev-73417f617a93cf30342c3ea41abc38927bd467aa.zip
op-kernel-dev-73417f617a93cf30342c3ea41abc38927bd467aa.tar.gz
[NET] fib_rules: Flush route cache after rule modifications
The results of FIB rules lookups are cached in the routing cache except for IPv6 as no such cache exists. So far, it was the responsibility of the user to flush the cache after modifying any rules. This lead to many false bug reports due to misunderstanding of this concept. This patch automatically flushes the route cache after inserting or deleting a rule. Thanks to Muli Ben-Yehuda <muli@il.ibm.com> for catching a bug in the previous patch. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_rules.c')
-rw-r--r--net/ipv4/fib_rules.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index b021b34..fe29b98 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -298,6 +298,11 @@ static size_t fib4_rule_nlmsg_payload(struct fib_rule *rule)
+ nla_total_size(4); /* flow */
}
+static void fib4_rule_flush_cache(void)
+{
+ rt_cache_flush(0);
+}
+
static struct fib_rules_ops fib4_rules_ops = {
.family = AF_INET,
.rule_size = sizeof(struct fib4_rule),
@@ -309,6 +314,7 @@ static struct fib_rules_ops fib4_rules_ops = {
.fill = fib4_rule_fill,
.default_pref = fib4_rule_default_pref,
.nlmsg_payload = fib4_rule_nlmsg_payload,
+ .flush_cache = fib4_rule_flush_cache,
.nlgroup = RTNLGRP_IPV4_RULE,
.policy = fib4_rule_policy,
.rules_list = &fib4_rules,
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