#include <linux/netfilter.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_core.h>
+#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
-#include <net/netfilter/nf_conntrack_protocol.h>
+#include <net/netfilter/nf_conntrack_l4proto.h>
#include <linux/netfilter_ipv4/ip_nat_protocol.h>
#include <linux/netfilter/nfnetlink.h>
static char __initdata version[] = "0.93";
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(format, args...)
-#endif
-
-
static inline int
ctnetlink_dump_tuples_proto(struct sk_buff *skb,
const struct nf_conntrack_tuple *tuple,
- struct nf_conntrack_protocol *proto)
+ struct nf_conntrack_l4proto *l4proto)
{
int ret = 0;
struct nfattr *nest_parms = NFA_NEST(skb, CTA_TUPLE_PROTO);
NFA_PUT(skb, CTA_PROTO_NUM, sizeof(u_int8_t), &tuple->dst.protonum);
- if (likely(proto->tuple_to_nfattr))
- ret = proto->tuple_to_nfattr(skb, tuple);
+ if (likely(l4proto->tuple_to_nfattr))
+ ret = l4proto->tuple_to_nfattr(skb, tuple);
NFA_NEST_END(skb, nest_parms);
{
int ret;
struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_protocol *proto;
+ struct nf_conntrack_l4proto *l4proto;
l3proto = nf_ct_l3proto_find_get(tuple->src.l3num);
ret = ctnetlink_dump_tuples_ip(skb, tuple, l3proto);
if (unlikely(ret < 0))
return ret;
- proto = nf_ct_proto_find_get(tuple->src.l3num, tuple->dst.protonum);
- ret = ctnetlink_dump_tuples_proto(skb, tuple, proto);
- nf_ct_proto_put(proto);
+ l4proto = nf_ct_l4proto_find_get(tuple->src.l3num, tuple->dst.protonum);
+ ret = ctnetlink_dump_tuples_proto(skb, tuple, l4proto);
+ nf_ct_l4proto_put(l4proto);
return ret;
}
static inline int
ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct nf_conn *ct)
{
- struct nf_conntrack_protocol *proto = nf_ct_proto_find_get(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num, ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum);
+ struct nf_conntrack_l4proto *l4proto = nf_ct_l4proto_find_get(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num, ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum);
struct nfattr *nest_proto;
int ret;
- if (!proto->to_nfattr) {
- nf_ct_proto_put(proto);
+ if (!l4proto->to_nfattr) {
+ nf_ct_l4proto_put(l4proto);
return 0;
}
nest_proto = NFA_NEST(skb, CTA_PROTOINFO);
- ret = proto->to_nfattr(skb, nest_proto, ct);
+ ret = l4proto->to_nfattr(skb, nest_proto, ct);
- nf_ct_proto_put(proto);
+ nf_ct_l4proto_put(l4proto);
NFA_NEST_END(skb, nest_proto);
return ret;
nfattr_failure:
+ nf_ct_l4proto_put(l4proto);
return -1;
}
/* dump everything */
events = ~0UL;
group = NFNLGRP_CONNTRACK_NEW;
- } else if (events & (IPCT_STATUS |
- IPCT_PROTOINFO |
- IPCT_HELPER |
- IPCT_HELPINFO |
- IPCT_NATINFO)) {
+ } else if (events & (IPCT_STATUS | IPCT_PROTOINFO)) {
type = IPCTNL_MSG_CT_NEW;
group = NFNLGRP_CONNTRACK_UPDATE;
} else
{
if (cb->args[1])
nf_ct_put((struct nf_conn *)cb->args[1]);
- DEBUGP("entered %s\n", __FUNCTION__);
return 0;
}
struct nfgenmsg *nfmsg = NLMSG_DATA(cb->nlh);
u_int8_t l3proto = nfmsg->nfgen_family;
- DEBUGP("entered %s, last bucket=%lu id=%u\n", __FUNCTION__,
- cb->args[0], *id);
-
read_lock_bh(&nf_conntrack_lock);
last = (struct nf_conn *)cb->args[1];
for (; cb->args[0] < nf_conntrack_htable_size; cb->args[0]++) {
cb->args[1] = (unsigned long)ct;
goto out;
}
+#ifdef CONFIG_NF_CT_ACCT
+ if (NFNL_MSG_TYPE(cb->nlh->nlmsg_type) ==
+ IPCTNL_MSG_CT_GET_CTRZERO)
+ memset(&ct->counters, 0, sizeof(ct->counters));
+#endif
}
if (cb->args[1]) {
cb->args[1] = 0;
if (last)
nf_ct_put(last);
- DEBUGP("leaving, last bucket=%lu id=%u\n", cb->args[0], *id);
- return skb->len;
-}
-
-#ifdef CONFIG_NF_CT_ACCT
-static int
-ctnetlink_dump_table_w(struct sk_buff *skb, struct netlink_callback *cb)
-{
- struct nf_conn *ct = NULL;
- struct nf_conntrack_tuple_hash *h;
- struct list_head *i;
- u_int32_t *id = (u_int32_t *) &cb->args[1];
- struct nfgenmsg *nfmsg = NLMSG_DATA(cb->nlh);
- u_int8_t l3proto = nfmsg->nfgen_family;
-
- DEBUGP("entered %s, last bucket=%u id=%u\n", __FUNCTION__,
- cb->args[0], *id);
-
- write_lock_bh(&nf_conntrack_lock);
- for (; cb->args[0] < nf_conntrack_htable_size; cb->args[0]++, *id = 0) {
- list_for_each_prev(i, &nf_conntrack_hash[cb->args[0]]) {
- h = (struct nf_conntrack_tuple_hash *) i;
- if (DIRECTION(h) != IP_CT_DIR_ORIGINAL)
- continue;
- ct = nf_ct_tuplehash_to_ctrack(h);
- if (l3proto && L3PROTO(ct) != l3proto)
- continue;
- if (ct->id <= *id)
- continue;
- if (ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq,
- IPCTNL_MSG_CT_NEW,
- 1, ct) < 0)
- goto out;
- *id = ct->id;
-
- memset(&ct->counters, 0, sizeof(ct->counters));
- }
- }
-out:
- write_unlock_bh(&nf_conntrack_lock);
-
- DEBUGP("leaving, last bucket=%lu id=%u\n", cb->args[0], *id);
-
return skb->len;
}
-#endif
static inline int
ctnetlink_parse_tuple_ip(struct nfattr *attr, struct nf_conntrack_tuple *tuple)
struct nf_conntrack_l3proto *l3proto;
int ret = 0;
- DEBUGP("entered %s\n", __FUNCTION__);
-
nfattr_parse_nested(tb, CTA_IP_MAX, attr);
l3proto = nf_ct_l3proto_find_get(tuple->src.l3num);
nf_ct_l3proto_put(l3proto);
- DEBUGP("leaving\n");
-
return ret;
}
struct nf_conntrack_tuple *tuple)
{
struct nfattr *tb[CTA_PROTO_MAX];
- struct nf_conntrack_protocol *proto;
+ struct nf_conntrack_l4proto *l4proto;
int ret = 0;
- DEBUGP("entered %s\n", __FUNCTION__);
-
nfattr_parse_nested(tb, CTA_PROTO_MAX, attr);
if (nfattr_bad_size(tb, CTA_PROTO_MAX, cta_min_proto))
return -EINVAL;
tuple->dst.protonum = *(u_int8_t *)NFA_DATA(tb[CTA_PROTO_NUM-1]);
- proto = nf_ct_proto_find_get(tuple->src.l3num, tuple->dst.protonum);
+ l4proto = nf_ct_l4proto_find_get(tuple->src.l3num, tuple->dst.protonum);
- if (likely(proto->nfattr_to_tuple))
- ret = proto->nfattr_to_tuple(tb, tuple);
+ if (likely(l4proto->nfattr_to_tuple))
+ ret = l4proto->nfattr_to_tuple(tb, tuple);
- nf_ct_proto_put(proto);
+ nf_ct_l4proto_put(l4proto);
return ret;
}
struct nfattr *tb[CTA_TUPLE_MAX];
int err;
- DEBUGP("entered %s\n", __FUNCTION__);
-
memset(tuple, 0, sizeof(*tuple));
nfattr_parse_nested(tb, CTA_TUPLE_MAX, cda[type-1]);
else
tuple->dst.dir = IP_CT_DIR_ORIGINAL;
- NF_CT_DUMP_TUPLE(tuple);
-
- DEBUGP("leaving\n");
-
return 0;
}
struct nfattr *tb[CTA_PROTONAT_MAX];
struct ip_nat_protocol *npt;
- DEBUGP("entered %s\n", __FUNCTION__);
-
nfattr_parse_nested(tb, CTA_PROTONAT_MAX, attr);
if (nfattr_bad_size(tb, CTA_PROTONAT_MAX, cta_min_protonat))
ip_nat_proto_put(npt);
- DEBUGP("leaving\n");
return 0;
}
struct nfattr *tb[CTA_NAT_MAX];
int err;
- DEBUGP("entered %s\n", __FUNCTION__);
-
memset(range, 0, sizeof(*range));
nfattr_parse_nested(tb, CTA_NAT_MAX, nat);
if (err < 0)
return err;
- DEBUGP("leaving\n");
return 0;
}
#endif
{
struct nfattr *tb[CTA_HELP_MAX];
- DEBUGP("entered %s\n", __FUNCTION__);
-
nfattr_parse_nested(tb, CTA_HELP_MAX, attr);
if (!tb[CTA_HELP_NAME-1])
u_int8_t u3 = nfmsg->nfgen_family;
int err = 0;
- DEBUGP("entered %s\n", __FUNCTION__);
-
if (nfattr_bad_size(cda, CTA_MAX, cta_min))
return -EINVAL;
return err;
h = nf_conntrack_find_get(&tuple, NULL);
- if (!h) {
- DEBUGP("tuple not found in conntrack hash\n");
+ if (!h)
return -ENOENT;
- }
ct = nf_ct_tuplehash_to_ctrack(h);
ct->timeout.function((unsigned long)ct);
nf_ct_put(ct);
- DEBUGP("leaving\n");
return 0;
}
u_int8_t u3 = nfmsg->nfgen_family;
int err = 0;
- DEBUGP("entered %s\n", __FUNCTION__);
-
if (nlh->nlmsg_flags & NLM_F_DUMP) {
u32 rlen;
- if (NFNL_MSG_TYPE(nlh->nlmsg_type) ==
- IPCTNL_MSG_CT_GET_CTRZERO) {
-#ifdef CONFIG_NF_CT_ACCT
- if ((*errp = netlink_dump_start(ctnl, skb, nlh,
- ctnetlink_dump_table_w,
- ctnetlink_done)) != 0)
- return -EINVAL;
-#else
+#ifndef CONFIG_NF_CT_ACCT
+ if (NFNL_MSG_TYPE(nlh->nlmsg_type) == IPCTNL_MSG_CT_GET_CTRZERO)
return -ENOTSUPP;
#endif
- } else {
- if ((*errp = netlink_dump_start(ctnl, skb, nlh,
- ctnetlink_dump_table,
- ctnetlink_done)) != 0)
+ if ((*errp = netlink_dump_start(ctnl, skb, nlh,
+ ctnetlink_dump_table,
+ ctnetlink_done)) != 0)
return -EINVAL;
- }
rlen = NLMSG_ALIGN(nlh->nlmsg_len);
if (rlen > skb->len)
return err;
h = nf_conntrack_find_get(&tuple, NULL);
- if (!h) {
- DEBUGP("tuple not found in conntrack hash");
+ if (!h)
return -ENOENT;
- }
- DEBUGP("tuple found\n");
+
ct = nf_ct_tuplehash_to_ctrack(h);
err = -ENOMEM;
nf_ct_put(ct);
return -ENOMEM;
}
- NETLINK_CB(skb2).dst_pid = NETLINK_CB(skb).pid;
err = ctnetlink_fill_info(skb2, NETLINK_CB(skb).pid, nlh->nlmsg_seq,
IPCTNL_MSG_CT_NEW, 1, ct);
if (err < 0)
goto out;
- DEBUGP("leaving\n");
return 0;
free:
char *helpname;
int err;
- DEBUGP("entered %s\n", __FUNCTION__);
-
if (!help) {
/* FIXME: we need to reallocate and rehash */
return -EBUSY;
ctnetlink_change_protoinfo(struct nf_conn *ct, struct nfattr *cda[])
{
struct nfattr *tb[CTA_PROTOINFO_MAX], *attr = cda[CTA_PROTOINFO-1];
- struct nf_conntrack_protocol *proto;
+ struct nf_conntrack_l4proto *l4proto;
u_int16_t npt = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum;
u_int16_t l3num = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num;
int err = 0;
nfattr_parse_nested(tb, CTA_PROTOINFO_MAX, attr);
- proto = nf_ct_proto_find_get(l3num, npt);
+ l4proto = nf_ct_l4proto_find_get(l3num, npt);
- if (proto->from_nfattr)
- err = proto->from_nfattr(tb, ct);
- nf_ct_proto_put(proto);
+ if (l4proto->from_nfattr)
+ err = l4proto->from_nfattr(tb, ct);
+ nf_ct_l4proto_put(l4proto);
return err;
}
{
int err;
- DEBUGP("entered %s\n", __FUNCTION__);
-
if (cda[CTA_HELP-1]) {
err = ctnetlink_change_helper(ct, cda);
if (err < 0)
ct->mark = ntohl(*(u_int32_t *)NFA_DATA(cda[CTA_MARK-1]));
#endif
- DEBUGP("all done\n");
return 0;
}
{
struct nf_conn *ct;
int err = -EINVAL;
-
- DEBUGP("entered %s\n", __FUNCTION__);
+ struct nf_conn_help *help;
ct = nf_conntrack_alloc(otuple, rtuple);
if (ct == NULL || IS_ERR(ct))
ct->mark = ntohl(*(u_int32_t *)NFA_DATA(cda[CTA_MARK-1]));
#endif
+ help = nfct_help(ct);
+ if (help)
+ help->helper = nf_ct_helper_find_get(rtuple);
+
add_timer(&ct->timeout);
nf_conntrack_hash_insert(ct);
- DEBUGP("conntrack with id %u inserted\n", ct->id);
+ if (help && help->helper)
+ nf_ct_helper_put(help->helper);
+
return 0;
err:
u_int8_t u3 = nfmsg->nfgen_family;
int err = 0;
- DEBUGP("entered %s\n", __FUNCTION__);
-
if (nfattr_bad_size(cda, CTA_MAX, cta_min))
return -EINVAL;
if (h == NULL) {
write_unlock_bh(&nf_conntrack_lock);
- DEBUGP("no such conntrack, create new\n");
err = -ENOENT;
if (nlh->nlmsg_flags & NLM_F_CREATE)
err = ctnetlink_create_conntrack(cda, &otuple, &rtuple);
/* We manipulate the conntrack inside the global conntrack table lock,
* so there's no need to increase the refcount */
- DEBUGP("conntrack found\n");
err = -EEXIST;
if (!(nlh->nlmsg_flags & NLM_F_EXCL))
err = ctnetlink_change_conntrack(nf_ct_tuplehash_to_ctrack(h), cda);
{
int ret;
struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_protocol *proto;
+ struct nf_conntrack_l4proto *l4proto;
struct nfattr *nest_parms = NFA_NEST(skb, CTA_EXPECT_MASK);
l3proto = nf_ct_l3proto_find_get(tuple->src.l3num);
if (unlikely(ret < 0))
goto nfattr_failure;
- proto = nf_ct_proto_find_get(tuple->src.l3num, tuple->dst.protonum);
- ret = ctnetlink_dump_tuples_proto(skb, mask, proto);
- nf_ct_proto_put(proto);
+ l4proto = nf_ct_l4proto_find_get(tuple->src.l3num, tuple->dst.protonum);
+ ret = ctnetlink_dump_tuples_proto(skb, mask, l4proto);
+ nf_ct_l4proto_put(l4proto);
if (unlikely(ret < 0))
goto nfattr_failure;
struct nfgenmsg *nfmsg = NLMSG_DATA(cb->nlh);
u_int8_t l3proto = nfmsg->nfgen_family;
- DEBUGP("entered %s, last id=%llu\n", __FUNCTION__, *id);
-
read_lock_bh(&nf_conntrack_lock);
list_for_each_prev(i, &nf_conntrack_expect_list) {
exp = (struct nf_conntrack_expect *) i;
out:
read_unlock_bh(&nf_conntrack_lock);
- DEBUGP("leaving, last id=%llu\n", *id);
-
return skb->len;
}
u_int8_t u3 = nfmsg->nfgen_family;
int err = 0;
- DEBUGP("entered %s\n", __FUNCTION__);
-
if (nfattr_bad_size(cda, CTA_EXPECT_MAX, cta_min_exp))
return -EINVAL;
skb2 = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb2)
goto out;
- NETLINK_CB(skb2).dst_pid = NETLINK_CB(skb).pid;
-
+
err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).pid,
nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW,
1, exp);
struct nf_conn_help *help;
int err = 0;
- DEBUGP("entered %s\n", __FUNCTION__);
-
/* caller guarantees that those three CTA_EXPECT_* exist */
err = ctnetlink_parse_tuple(cda, &tuple, CTA_EXPECT_TUPLE, u3);
if (err < 0)
u_int8_t u3 = nfmsg->nfgen_family;
int err = 0;
- DEBUGP("entered %s\n", __FUNCTION__);
-
if (nfattr_bad_size(cda, CTA_EXPECT_MAX, cta_min_exp))
return -EINVAL;
err = ctnetlink_change_expect(exp, cda);
write_unlock_bh(&nf_conntrack_lock);
- DEBUGP("leaving\n");
-
return err;
}
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