#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/ipv6/nf_conntrack_icmpv6.h>
+#include <net/netfilter/nf_log.h>
-static unsigned long nf_ct_icmpv6_timeout __read_mostly = 30*HZ;
+static unsigned int nf_ct_icmpv6_timeout __read_mostly = 30*HZ;
-static int icmpv6_pkt_to_tuple(const struct sk_buff *skb,
- unsigned int dataoff,
- struct nf_conntrack_tuple *tuple)
+static bool icmpv6_pkt_to_tuple(const struct sk_buff *skb,
+ unsigned int dataoff,
+ struct nf_conntrack_tuple *tuple)
{
- struct icmp6hdr _hdr, *hp;
+ const struct icmp6hdr *hp;
+ struct icmp6hdr _hdr;
hp = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
if (hp == NULL)
- return 0;
+ return false;
tuple->dst.u.icmp.type = hp->icmp6_type;
tuple->src.u.icmp.id = hp->icmp6_identifier;
tuple->dst.u.icmp.code = hp->icmp6_code;
- return 1;
+ return true;
}
/* Add 1; spaces filled with 0. */
-static u_int8_t invmap[] = {
+static const u_int8_t invmap[] = {
[ICMPV6_ECHO_REQUEST - 128] = ICMPV6_ECHO_REPLY + 1,
[ICMPV6_ECHO_REPLY - 128] = ICMPV6_ECHO_REQUEST + 1,
- [ICMPV6_NI_QUERY - 128] = ICMPV6_NI_QUERY + 1,
- [ICMPV6_NI_REPLY - 128] = ICMPV6_NI_REPLY +1
+ [ICMPV6_NI_QUERY - 128] = ICMPV6_NI_REPLY + 1,
+ [ICMPV6_NI_REPLY - 128] = ICMPV6_NI_QUERY +1
+};
+
+static const u_int8_t noct_valid_new[] = {
+ [ICMPV6_MGM_QUERY - 130] = 1,
+ [ICMPV6_MGM_REPORT -130] = 1,
+ [ICMPV6_MGM_REDUCTION - 130] = 1,
+ [NDISC_ROUTER_SOLICITATION - 130] = 1,
+ [NDISC_ROUTER_ADVERTISEMENT - 130] = 1,
+ [NDISC_NEIGHBOUR_SOLICITATION - 130] = 1,
+ [NDISC_NEIGHBOUR_ADVERTISEMENT - 130] = 1,
+ [ICMPV6_MLD2_REPORT - 130] = 1
};
-static int icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple,
- const struct nf_conntrack_tuple *orig)
+static bool icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple,
+ const struct nf_conntrack_tuple *orig)
{
int type = orig->dst.u.icmp.type - 128;
if (type < 0 || type >= sizeof(invmap) || !invmap[type])
- return 0;
+ return false;
tuple->src.u.icmp.id = orig->src.u.icmp.id;
tuple->dst.u.icmp.type = invmap[type] - 1;
tuple->dst.u.icmp.code = orig->dst.u.icmp.code;
- return 1;
+ return true;
}
/* Print out the per-protocol part of the tuple. */
ntohs(tuple->src.u.icmp.id));
}
-/* Print out the private part of the conntrack. */
-static int icmpv6_print_conntrack(struct seq_file *s,
- const struct nf_conn *conntrack)
-{
- return 0;
-}
-
/* Returns verdict for packet, or -1 for invalid. */
static int icmpv6_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
- int pf,
+ u_int8_t pf,
unsigned int hooknum)
{
/* Try to delete connection immediately after all replies:
means this will only run once even if count hits zero twice
(theoretically possible with SMP) */
if (CTINFO2DIR(ctinfo) == IP_CT_DIR_REPLY) {
- if (atomic_dec_and_test(&ct->proto.icmp.count)
- && del_timer(&ct->timeout))
- ct->timeout.function((unsigned long)ct);
+ if (atomic_dec_and_test(&ct->proto.icmp.count))
+ nf_ct_kill_acct(ct, ctinfo, skb);
} else {
atomic_inc(&ct->proto.icmp.count);
- nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, skb);
+ nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, ct);
nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_icmpv6_timeout);
}
}
/* Called when a new connection for this protocol found. */
-static int icmpv6_new(struct nf_conn *conntrack,
- const struct sk_buff *skb,
- unsigned int dataoff)
+static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb,
+ unsigned int dataoff)
{
- static u_int8_t valid_new[] = {
+ static const u_int8_t valid_new[] = {
[ICMPV6_ECHO_REQUEST - 128] = 1,
[ICMPV6_NI_QUERY - 128] = 1
};
- int type = conntrack->tuplehash[0].tuple.dst.u.icmp.type - 128;
+ int type = ct->tuplehash[0].tuple.dst.u.icmp.type - 128;
if (type < 0 || type >= sizeof(valid_new) || !valid_new[type]) {
/* Can't create a new ICMPv6 `conn' with this. */
pr_debug("icmpv6: can't create new conn with type %u\n",
type + 128);
- NF_CT_DUMP_TUPLE(&conntrack->tuplehash[0].tuple);
- return 0;
+ nf_ct_dump_tuple_ipv6(&ct->tuplehash[0].tuple);
+ if (LOG_INVALID(nf_ct_net(ct), IPPROTO_ICMPV6))
+ nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
+ "nf_ct_icmpv6: invalid new with type %d ",
+ type + 128);
+ return false;
}
- atomic_set(&conntrack->proto.icmp.count, 0);
- return 1;
+ atomic_set(&ct->proto.icmp.count, 0);
+ return true;
}
static int
-icmpv6_error_message(struct sk_buff *skb,
+icmpv6_error_message(struct net *net,
+ struct sk_buff *skb,
unsigned int icmp6off,
enum ip_conntrack_info *ctinfo,
unsigned int hooknum)
{
struct nf_conntrack_tuple intuple, origtuple;
- struct nf_conntrack_tuple_hash *h;
- struct nf_conntrack_l4proto *inproto;
+ const struct nf_conntrack_tuple_hash *h;
+ const struct nf_conntrack_l4proto *inproto;
NF_CT_ASSERT(skb->nfct == NULL);
*ctinfo = IP_CT_RELATED;
- h = nf_conntrack_find_get(&intuple);
+ h = nf_conntrack_find_get(net, &intuple);
if (!h) {
pr_debug("icmpv6_error: no match\n");
return -NF_ACCEPT;
}
static int
-icmpv6_error(struct sk_buff *skb, unsigned int dataoff,
- enum ip_conntrack_info *ctinfo, int pf, unsigned int hooknum)
+icmpv6_error(struct net *net, struct sk_buff *skb, unsigned int dataoff,
+ enum ip_conntrack_info *ctinfo, u_int8_t pf, unsigned int hooknum)
{
- struct icmp6hdr _ih, *icmp6h;
+ const struct icmp6hdr *icmp6h;
+ struct icmp6hdr _ih;
+ int type;
icmp6h = skb_header_pointer(skb, dataoff, sizeof(_ih), &_ih);
if (icmp6h == NULL) {
- if (LOG_INVALID(IPPROTO_ICMPV6))
+ if (LOG_INVALID(net, IPPROTO_ICMPV6))
nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
"nf_ct_icmpv6: short packet ");
return -NF_ACCEPT;
}
- if (nf_conntrack_checksum && hooknum == NF_IP6_PRE_ROUTING &&
+ if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING &&
nf_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) {
- nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
- "nf_ct_icmpv6: ICMPv6 checksum failed\n");
+ if (LOG_INVALID(net, IPPROTO_ICMPV6))
+ nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
+ "nf_ct_icmpv6: ICMPv6 checksum failed ");
return -NF_ACCEPT;
}
+ type = icmp6h->icmp6_type - 130;
+ if (type >= 0 && type < sizeof(noct_valid_new) &&
+ noct_valid_new[type]) {
+ skb->nfct = &nf_conntrack_untracked.ct_general;
+ skb->nfctinfo = IP_CT_NEW;
+ nf_conntrack_get(skb->nfct);
+ return NF_ACCEPT;
+ }
+
/* is not error message ? */
if (icmp6h->icmp6_type >= 128)
return NF_ACCEPT;
- return icmpv6_error_message(skb, dataoff, ctinfo, hooknum);
+ return icmpv6_error_message(net, skb, dataoff, ctinfo, hooknum);
}
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nfnetlink_conntrack.h>
-static int icmpv6_tuple_to_nfattr(struct sk_buff *skb,
+static int icmpv6_tuple_to_nlattr(struct sk_buff *skb,
const struct nf_conntrack_tuple *t)
{
- NLA_PUT(skb, CTA_PROTO_ICMPV6_ID, sizeof(u_int16_t),
- &t->src.u.icmp.id);
- NLA_PUT(skb, CTA_PROTO_ICMPV6_TYPE, sizeof(u_int8_t),
- &t->dst.u.icmp.type);
- NLA_PUT(skb, CTA_PROTO_ICMPV6_CODE, sizeof(u_int8_t),
- &t->dst.u.icmp.code);
+ NLA_PUT_BE16(skb, CTA_PROTO_ICMPV6_ID, t->src.u.icmp.id);
+ NLA_PUT_U8(skb, CTA_PROTO_ICMPV6_TYPE, t->dst.u.icmp.type);
+ NLA_PUT_U8(skb, CTA_PROTO_ICMPV6_CODE, t->dst.u.icmp.code);
return 0;
return -1;
}
-static const size_t cta_min_proto[CTA_PROTO_MAX+1] = {
- [CTA_PROTO_ICMPV6_TYPE] = sizeof(u_int8_t),
- [CTA_PROTO_ICMPV6_CODE] = sizeof(u_int8_t),
- [CTA_PROTO_ICMPV6_ID] = sizeof(u_int16_t)
+static const struct nla_policy icmpv6_nla_policy[CTA_PROTO_MAX+1] = {
+ [CTA_PROTO_ICMPV6_TYPE] = { .type = NLA_U8 },
+ [CTA_PROTO_ICMPV6_CODE] = { .type = NLA_U8 },
+ [CTA_PROTO_ICMPV6_ID] = { .type = NLA_U16 },
};
-static int icmpv6_nfattr_to_tuple(struct nlattr *tb[],
+static int icmpv6_nlattr_to_tuple(struct nlattr *tb[],
struct nf_conntrack_tuple *tuple)
{
if (!tb[CTA_PROTO_ICMPV6_TYPE]
|| !tb[CTA_PROTO_ICMPV6_ID])
return -EINVAL;
- if (nfattr_bad_size(tb, CTA_PROTO_MAX, cta_min_proto))
- return -EINVAL;
-
- tuple->dst.u.icmp.type =
- *(u_int8_t *)nla_data(tb[CTA_PROTO_ICMPV6_TYPE]);
- tuple->dst.u.icmp.code =
- *(u_int8_t *)nla_data(tb[CTA_PROTO_ICMPV6_CODE]);
- tuple->src.u.icmp.id =
- *(__be16 *)nla_data(tb[CTA_PROTO_ICMPV6_ID]);
+ tuple->dst.u.icmp.type = nla_get_u8(tb[CTA_PROTO_ICMPV6_TYPE]);
+ tuple->dst.u.icmp.code = nla_get_u8(tb[CTA_PROTO_ICMPV6_CODE]);
+ tuple->src.u.icmp.id = nla_get_be16(tb[CTA_PROTO_ICMPV6_ID]);
if (tuple->dst.u.icmp.type < 128
|| tuple->dst.u.icmp.type - 128 >= sizeof(invmap)
static struct ctl_table_header *icmpv6_sysctl_header;
static struct ctl_table icmpv6_sysctl_table[] = {
{
- .ctl_name = NET_NF_CONNTRACK_ICMPV6_TIMEOUT,
.procname = "nf_conntrack_icmpv6_timeout",
.data = &nf_ct_icmpv6_timeout,
.maxlen = sizeof(unsigned int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
},
{
.ctl_name = 0
.pkt_to_tuple = icmpv6_pkt_to_tuple,
.invert_tuple = icmpv6_invert_tuple,
.print_tuple = icmpv6_print_tuple,
- .print_conntrack = icmpv6_print_conntrack,
.packet = icmpv6_packet,
.new = icmpv6_new,
.error = icmpv6_error,
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
- .tuple_to_nfattr = icmpv6_tuple_to_nfattr,
- .nfattr_to_tuple = icmpv6_nfattr_to_tuple,
+ .tuple_to_nlattr = icmpv6_tuple_to_nlattr,
+ .nlattr_to_tuple = icmpv6_nlattr_to_tuple,
+ .nla_policy = icmpv6_nla_policy,
#endif
#ifdef CONFIG_SYSCTL
.ctl_table_header = &icmpv6_sysctl_header,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff