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authorHarald Welte <laforge@netfilter.org>2005-08-09 19:42:34 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 15:36:19 -0700
commit2cc7d5730957c4a3f3659d17d2ba5e06d5581c1f (patch)
treec2c3d03d8120831d487bb8fcc73e5dcbe13aebea /net/ipv6
parent4fdb3bb723db469717c6d38fda667d8b0fa86ebd (diff)
[NETFILTER]: Move reroute-after-queue code up to the nf_queue layer.
The rerouting functionality is required by the core, therefore it has to be implemented by the core and not in individual queue handlers. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/af_inet6.c7
-rw-r--r--net/ipv6/netfilter.c62
-rw-r--r--net/ipv6/netfilter/ip6_queue.c24
3 files changed, 69 insertions, 24 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 28d9bcab0970..574047353628 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -44,6 +44,7 @@
#include <linux/netdevice.h>
#include <linux/icmpv6.h>
#include <linux/smp_lock.h>
+#include <linux/netfilter_ipv6.h>
#include <net/ip.h>
#include <net/ipv6.h>
@@ -757,6 +758,9 @@ static int __init inet6_init(void)
err = igmp6_init(&inet6_family_ops);
if (err)
goto igmp_fail;
+ err = ipv6_netfilter_init();
+ if (err)
+ goto netfilter_fail;
/* Create /proc/foo6 entries. */
#ifdef CONFIG_PROC_FS
err = -ENOMEM;
@@ -813,6 +817,8 @@ proc_tcp6_fail:
raw6_proc_exit();
proc_raw6_fail:
#endif
+ ipv6_netfilter_fini();
+netfilter_fail:
igmp6_cleanup();
igmp_fail:
ndisc_cleanup();
@@ -852,6 +858,7 @@ static void __exit inet6_exit(void)
ip6_route_cleanup();
ipv6_packet_cleanup();
igmp6_cleanup();
+ ipv6_netfilter_fini();
ndisc_cleanup();
icmpv6_cleanup();
#ifdef CONFIG_SYSCTL
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index 5656d0959aba..c8daef97cf56 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -5,6 +5,8 @@
#include <linux/kernel.h>
#include <linux/ipv6.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv6.h>
#include <net/dst.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
@@ -40,4 +42,64 @@ int ip6_route_me_harder(struct sk_buff *skb)
}
EXPORT_SYMBOL(ip6_route_me_harder);
+/*
+ * Extra routing may needed on local out, as the QUEUE target never
+ * returns control to the table.
+ */
+
+struct ip6_rt_info {
+ struct in6_addr daddr;
+ struct in6_addr saddr;
+};
+
+static void save(const struct sk_buff *skb, struct nf_info *info)
+{
+ struct ip6_rt_info *rt_info = nf_info_reroute(info);
+
+ if (info->hook == NF_IP6_LOCAL_OUT) {
+ struct ipv6hdr *iph = skb->nh.ipv6h;
+
+ rt_info->daddr = iph->daddr;
+ rt_info->saddr = iph->saddr;
+ }
+}
+
+static int reroute(struct sk_buff **pskb, const struct nf_info *info)
+{
+ struct ip6_rt_info *rt_info = nf_info_reroute(info);
+
+ if (info->hook == NF_IP6_LOCAL_OUT) {
+ struct ipv6hdr *iph = (*pskb)->nh.ipv6h;
+ if (!ipv6_addr_equal(&iph->daddr, &rt_info->daddr) ||
+ !ipv6_addr_equal(&iph->saddr, &rt_info->saddr))
+ return ip6_route_me_harder(*pskb);
+ }
+ return 0;
+}
+
+static struct nf_queue_rerouter ip6_reroute = {
+ .rer_size = sizeof(struct ip6_rt_info),
+ .save = &save,
+ .reroute = &reroute,
+};
+
+int __init ipv6_netfilter_init(void)
+{
+ return nf_register_queue_rerouter(PF_INET6, &ip6_reroute);
+}
+
+void ipv6_netfilter_fini(void)
+{
+ nf_unregister_queue_rerouter(PF_INET6);
+}
+
+#else /* CONFIG_NETFILTER */
+int __init ipv6_netfilter_init(void)
+{
+ return 0;
+}
+
+void ipv6_netfilter_fini(void)
+{
+}
#endif /* CONFIG_NETFILTER */
diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c
index 1c3d247a22cc..c45d8f8815de 100644
--- a/net/ipv6/netfilter/ip6_queue.c
+++ b/net/ipv6/netfilter/ip6_queue.c
@@ -47,16 +47,10 @@
#define NET_IPQ_QMAX 2088
#define NET_IPQ_QMAX_NAME "ip6_queue_maxlen"
-struct ipq_rt_info {
- struct in6_addr daddr;
- struct in6_addr saddr;
-};
-
struct ipq_queue_entry {
struct list_head list;
struct nf_info *info;
struct sk_buff *skb;
- struct ipq_rt_info rt_info;
};
typedef int (*ipq_cmpfn)(struct ipq_queue_entry *, unsigned long);
@@ -302,13 +296,6 @@ ipq_enqueue_packet(struct sk_buff *skb, struct nf_info *info, void *data)
entry->info = info;
entry->skb = skb;
- if (entry->info->hook == NF_IP_LOCAL_OUT) {
- struct ipv6hdr *iph = skb->nh.ipv6h;
-
- entry->rt_info.daddr = iph->daddr;
- entry->rt_info.saddr = iph->saddr;
- }
-
nskb = ipq_build_packet_message(entry, &status);
if (nskb == NULL)
goto err_out_free;
@@ -389,17 +376,6 @@ ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
memcpy(e->skb->data, v->payload, v->data_len);
e->skb->ip_summed = CHECKSUM_NONE;
- /*
- * Extra routing may needed on local out, as the QUEUE target never
- * returns control to the table.
- * Not a nice way to cmp, but works
- */
- if (e->info->hook == NF_IP_LOCAL_OUT) {
- struct ipv6hdr *iph = e->skb->nh.ipv6h;
- if (!ipv6_addr_equal(&iph->daddr, &e->rt_info.daddr) ||
- !ipv6_addr_equal(&iph->saddr, &e->rt_info.saddr))
- return ip6_route_me_harder(e->skb);
- }
return 0;
}