#include <linux/types.h>
#include <linux/init.h>
+#include <linux/random.h>
#include <linux/ip.h>
#include <linux/udp.h>
range_size = ntohs(range->max.udp.port) - min + 1;
}
+ if (range->flags & IP_NAT_RANGE_PROTO_RANDOM)
+ port = net_random();
+
for (i = 0; i < range_size; i++, port++) {
*portptr = htons(min + port % range_size);
if (!nf_nat_used_tuple(tuple, ct))
}
static int
-udp_manip_pkt(struct sk_buff **pskb,
+udp_manip_pkt(struct sk_buff *skb,
unsigned int iphdroff,
const struct nf_conntrack_tuple *tuple,
enum nf_nat_manip_type maniptype)
{
- struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
+ struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
struct udphdr *hdr;
unsigned int hdroff = iphdroff + iph->ihl*4;
__be32 oldip, newip;
__be16 *portptr, newport;
- if (!skb_make_writable(pskb, hdroff + sizeof(*hdr)))
+ if (!skb_make_writable(skb, hdroff + sizeof(*hdr)))
return 0;
- iph = (struct iphdr *)((*pskb)->data + iphdroff);
- hdr = (struct udphdr *)((*pskb)->data + hdroff);
+ iph = (struct iphdr *)(skb->data + iphdroff);
+ hdr = (struct udphdr *)(skb->data + hdroff);
if (maniptype == IP_NAT_MANIP_SRC) {
/* Get rid of src ip and src pt */
newport = tuple->dst.u.udp.port;
portptr = &hdr->dest;
}
- if (hdr->check || (*pskb)->ip_summed == CHECKSUM_PARTIAL) {
- nf_proto_csum_replace4(&hdr->check, *pskb, oldip, newip, 1);
- nf_proto_csum_replace2(&hdr->check, *pskb, *portptr, newport,
- 0);
+ if (hdr->check || skb->ip_summed == CHECKSUM_PARTIAL) {
+ inet_proto_csum_replace4(&hdr->check, skb, oldip, newip, 1);
+ inet_proto_csum_replace2(&hdr->check, skb, *portptr, newport,
+ 0);
if (!hdr->check)
hdr->check = CSUM_MANGLED_0;
}
.manip_pkt = udp_manip_pkt,
.in_range = udp_in_range,
.unique_tuple = udp_unique_tuple,
-#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \
- defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE)
- .range_to_nfattr = nf_nat_port_range_to_nfattr,
- .nfattr_to_range = nf_nat_port_nfattr_to_range,
+#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
+ .range_to_nlattr = nf_nat_port_range_to_nlattr,
+ .nlattr_to_range = nf_nat_port_nlattr_to_range,
#endif
};