#include <net/route.h>
#include <net/xfrm.h>
#include <net/ip.h>
+#include <net/netfilter/nf_queue.h>
/* route_me_harder function, used by iptable_nat, iptable_mangle + ip_queue */
int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
{
+ struct net *net = dev_net(skb->dst->dev);
const struct iphdr *iph = ip_hdr(skb);
struct rtable *rt;
struct flowi fl = {};
unsigned int hh_len;
unsigned int type;
- type = inet_addr_type(iph->saddr);
+ type = inet_addr_type(net, iph->saddr);
+ if (skb->sk && inet_sk(skb->sk)->transparent)
+ type = RTN_LOCAL;
if (addr_type == RTN_UNSPEC)
addr_type = type;
fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
fl.oif = skb->sk ? skb->sk->sk_bound_dev_if : 0;
fl.mark = skb->mark;
- if (ip_route_output_key(&rt, &fl) != 0)
+ fl.flags = skb->sk ? inet_sk_flowi_flags(skb->sk) : 0;
+ if (ip_route_output_key(net, &rt, &fl) != 0)
return -1;
/* Drop old route. */
/* non-local src, find valid iif to satisfy
* rp-filter when calling ip_route_input. */
fl.nl_u.ip4_u.daddr = iph->saddr;
- if (ip_route_output_key(&rt, &fl) != 0)
+ if (ip_route_output_key(net, &rt, &fl) != 0)
return -1;
odst = skb->dst;
#ifdef CONFIG_XFRM
if (!(IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED) &&
xfrm_decode_session(skb, &fl, AF_INET) == 0)
- if (xfrm_lookup(&skb->dst, &fl, skb->sk, 0))
+ if (xfrm_lookup(net, &skb->dst, &fl, skb->sk, 0))
return -1;
#endif
dst = ((struct xfrm_dst *)dst)->route;
dst_hold(dst);
- if (xfrm_lookup(&dst, &fl, skb->sk, 0) < 0)
+ if (xfrm_lookup(dev_net(dst->dev), &dst, &fl, skb->sk, 0) < 0)
return -1;
dst_release(skb->dst);
__be32 daddr;
__be32 saddr;
u_int8_t tos;
+ u_int32_t mark;
};
-static void nf_ip_saveroute(const struct sk_buff *skb, struct nf_info *info)
+static void nf_ip_saveroute(const struct sk_buff *skb,
+ struct nf_queue_entry *entry)
{
- struct ip_rt_info *rt_info = nf_info_reroute(info);
+ struct ip_rt_info *rt_info = nf_queue_entry_reroute(entry);
- if (info->hook == NF_INET_LOCAL_OUT) {
+ if (entry->hook == NF_INET_LOCAL_OUT) {
const struct iphdr *iph = ip_hdr(skb);
rt_info->tos = iph->tos;
rt_info->daddr = iph->daddr;
rt_info->saddr = iph->saddr;
+ rt_info->mark = skb->mark;
}
}
-static int nf_ip_reroute(struct sk_buff *skb, const struct nf_info *info)
+static int nf_ip_reroute(struct sk_buff *skb,
+ const struct nf_queue_entry *entry)
{
- const struct ip_rt_info *rt_info = nf_info_reroute(info);
+ const struct ip_rt_info *rt_info = nf_queue_entry_reroute(entry);
- if (info->hook == NF_INET_LOCAL_OUT) {
+ if (entry->hook == NF_INET_LOCAL_OUT) {
const struct iphdr *iph = ip_hdr(skb);
if (!(iph->tos == rt_info->tos
+ && skb->mark == rt_info->mark
&& iph->daddr == rt_info->daddr
&& iph->saddr == rt_info->saddr))
return ip_route_me_harder(skb, RTN_UNSPEC);
}
return csum;
}
-
EXPORT_SYMBOL(nf_ip_checksum);
-static struct nf_afinfo nf_ip_afinfo = {
- .family = AF_INET,
- .checksum = nf_ip_checksum,
- .saveroute = nf_ip_saveroute,
- .reroute = nf_ip_reroute,
- .route_key_size = sizeof(struct ip_rt_info),
+static __sum16 nf_ip_checksum_partial(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, unsigned int len,
+ u_int8_t protocol)
+{
+ const struct iphdr *iph = ip_hdr(skb);
+ __sum16 csum = 0;
+
+ switch (skb->ip_summed) {
+ case CHECKSUM_COMPLETE:
+ if (len == skb->len - dataoff)
+ return nf_ip_checksum(skb, hook, dataoff, protocol);
+ /* fall through */
+ case CHECKSUM_NONE:
+ skb->csum = csum_tcpudp_nofold(iph->saddr, iph->daddr, protocol,
+ skb->len - dataoff, 0);
+ skb->ip_summed = CHECKSUM_NONE;
+ csum = __skb_checksum_complete_head(skb, dataoff + len);
+ if (!csum)
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ }
+ return csum;
+}
+
+static int nf_ip_route(struct dst_entry **dst, struct flowi *fl)
+{
+ return ip_route_output_key(&init_net, (struct rtable **)dst, fl);
+}
+
+static const struct nf_afinfo nf_ip_afinfo = {
+ .family = AF_INET,
+ .checksum = nf_ip_checksum,
+ .checksum_partial = nf_ip_checksum_partial,
+ .route = nf_ip_route,
+ .saveroute = nf_ip_saveroute,
+ .reroute = nf_ip_reroute,
+ .route_key_size = sizeof(struct ip_rt_info),
};
static int ipv4_netfilter_init(void)
module_init(ipv4_netfilter_init);
module_exit(ipv4_netfilter_fini);
+
+#ifdef CONFIG_SYSCTL
+struct ctl_path nf_net_ipv4_netfilter_sysctl_path[] = {
+ { .procname = "net", .ctl_name = CTL_NET, },
+ { .procname = "ipv4", .ctl_name = NET_IPV4, },
+ { .procname = "netfilter", .ctl_name = NET_IPV4_NETFILTER, },
+ { }
+};
+EXPORT_SYMBOL_GPL(nf_net_ipv4_netfilter_sysctl_path);
+#endif /* CONFIG_SYSCTL */