#include <linux/icmp.h>
#include <linux/sysctl.h>
#include <net/ipv6.h>
+#include <net/inet_frag.h>
#include <linux/netfilter_ipv6.h>
#include <net/netfilter/nf_conntrack.h>
static int ipv6_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
struct nf_conntrack_tuple *tuple)
{
- u_int32_t _addrs[8], *ap;
+ const u_int32_t *ap;
+ u_int32_t _addrs[8];
ap = skb_header_pointer(skb, nhoff + offsetof(struct ipv6hdr, saddr),
sizeof(_addrs), _addrs);
NIP6(*((struct in6_addr *)tuple->dst.u3.ip6)));
}
-static int ipv6_print_conntrack(struct seq_file *s,
- const struct nf_conn *conntrack)
-{
- return 0;
-}
-
/*
* Based on ipv6_skip_exthdr() in net/ipv6/exthdr.c
*
}
static unsigned int ipv6_confirm(unsigned int hooknum,
- struct sk_buff **pskb,
+ struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct nf_conn *ct;
- struct nf_conn_help *help;
- struct nf_conntrack_helper *helper;
+ const struct nf_conn_help *help;
+ const struct nf_conntrack_helper *helper;
enum ip_conntrack_info ctinfo;
unsigned int ret, protoff;
- unsigned int extoff = (u8 *)(ipv6_hdr(*pskb) + 1) - (*pskb)->data;
- unsigned char pnum = ipv6_hdr(*pskb)->nexthdr;
+ unsigned int extoff = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
+ unsigned char pnum = ipv6_hdr(skb)->nexthdr;
/* This is where we call the helper: as the packet goes out. */
- ct = nf_ct_get(*pskb, &ctinfo);
+ ct = nf_ct_get(skb, &ctinfo);
if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)
goto out;
if (!helper)
goto out;
- protoff = nf_ct_ipv6_skip_exthdr(*pskb, extoff, &pnum,
- (*pskb)->len - extoff);
- if (protoff > (*pskb)->len || pnum == NEXTHDR_FRAGMENT) {
+ protoff = nf_ct_ipv6_skip_exthdr(skb, extoff, &pnum,
+ skb->len - extoff);
+ if (protoff > skb->len || pnum == NEXTHDR_FRAGMENT) {
pr_debug("proto header not found\n");
return NF_ACCEPT;
}
- ret = helper->help(pskb, protoff, ct, ctinfo);
+ ret = helper->help(skb, protoff, ct, ctinfo);
if (ret != NF_ACCEPT)
return ret;
out:
/* We've seen it coming out the other side: confirm it */
- return nf_conntrack_confirm(pskb);
+ return nf_conntrack_confirm(skb);
}
static unsigned int ipv6_defrag(unsigned int hooknum,
- struct sk_buff **pskb,
+ struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
struct sk_buff *reasm;
/* Previously seen (loopback)? */
- if ((*pskb)->nfct)
+ if (skb->nfct)
return NF_ACCEPT;
- reasm = nf_ct_frag6_gather(*pskb);
+ reasm = nf_ct_frag6_gather(skb);
/* queued */
if (reasm == NULL)
return NF_STOLEN;
/* error occured or not fragmented */
- if (reasm == *pskb)
+ if (reasm == skb)
return NF_ACCEPT;
nf_ct_frag6_output(hooknum, reasm, (struct net_device *)in,
}
static unsigned int ipv6_conntrack_in(unsigned int hooknum,
- struct sk_buff **pskb,
+ struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
- struct sk_buff *reasm = (*pskb)->nfct_reasm;
+ struct sk_buff *reasm = skb->nfct_reasm;
/* This packet is fragmented and has reassembled packet. */
if (reasm) {
if (!reasm->nfct) {
unsigned int ret;
- ret = nf_conntrack_in(PF_INET6, hooknum, &reasm);
+ ret = nf_conntrack_in(PF_INET6, hooknum, reasm);
if (ret != NF_ACCEPT)
return ret;
}
nf_conntrack_get(reasm->nfct);
- (*pskb)->nfct = reasm->nfct;
- (*pskb)->nfctinfo = reasm->nfctinfo;
+ skb->nfct = reasm->nfct;
+ skb->nfctinfo = reasm->nfctinfo;
return NF_ACCEPT;
}
- return nf_conntrack_in(PF_INET6, hooknum, pskb);
+ return nf_conntrack_in(PF_INET6, hooknum, skb);
}
static unsigned int ipv6_conntrack_local(unsigned int hooknum,
- struct sk_buff **pskb,
+ struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
/* root is playing with raw sockets. */
- if ((*pskb)->len < sizeof(struct ipv6hdr)) {
+ if (skb->len < sizeof(struct ipv6hdr)) {
if (net_ratelimit())
printk("ipv6_conntrack_local: packet too short\n");
return NF_ACCEPT;
}
- return ipv6_conntrack_in(hooknum, pskb, in, out, okfn);
+ return ipv6_conntrack_in(hooknum, skb, in, out, okfn);
}
-static struct nf_hook_ops ipv6_conntrack_ops[] = {
+static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {
{
.hook = ipv6_defrag,
.owner = THIS_MODULE,
.pf = PF_INET6,
- .hooknum = NF_IP6_PRE_ROUTING,
+ .hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
},
{
.hook = ipv6_conntrack_in,
.owner = THIS_MODULE,
.pf = PF_INET6,
- .hooknum = NF_IP6_PRE_ROUTING,
+ .hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP6_PRI_CONNTRACK,
},
{
.hook = ipv6_conntrack_local,
.owner = THIS_MODULE,
.pf = PF_INET6,
- .hooknum = NF_IP6_LOCAL_OUT,
+ .hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_CONNTRACK,
},
{
.hook = ipv6_defrag,
.owner = THIS_MODULE,
.pf = PF_INET6,
- .hooknum = NF_IP6_LOCAL_OUT,
+ .hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
},
{
.hook = ipv6_confirm,
.owner = THIS_MODULE,
.pf = PF_INET6,
- .hooknum = NF_IP6_POST_ROUTING,
+ .hooknum = NF_INET_POST_ROUTING,
.priority = NF_IP6_PRI_LAST,
},
{
.hook = ipv6_confirm,
.owner = THIS_MODULE,
.pf = PF_INET6,
- .hooknum = NF_IP6_LOCAL_IN,
+ .hooknum = NF_INET_LOCAL_IN,
.priority = NF_IP6_PRI_LAST-1,
},
};
-#ifdef CONFIG_SYSCTL
-static ctl_table nf_ct_ipv6_sysctl_table[] = {
- {
- .ctl_name = NET_NF_CONNTRACK_FRAG6_TIMEOUT,
- .procname = "nf_conntrack_frag6_timeout",
- .data = &nf_ct_frag6_timeout,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_FRAG6_LOW_THRESH,
- .procname = "nf_conntrack_frag6_low_thresh",
- .data = &nf_ct_frag6_low_thresh,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_FRAG6_HIGH_THRESH,
- .procname = "nf_conntrack_frag6_high_thresh",
- .data = &nf_ct_frag6_high_thresh,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- { .ctl_name = 0 }
-};
-#endif
-
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
#include <linux/netfilter/nfnetlink.h>
.pkt_to_tuple = ipv6_pkt_to_tuple,
.invert_tuple = ipv6_invert_tuple,
.print_tuple = ipv6_print_tuple,
- .print_conntrack = ipv6_print_conntrack,
.get_l4proto = ipv6_get_l4proto,
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
.tuple_to_nlattr = ipv6_tuple_to_nlattr,
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