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authorPablo Neira Ayuso <pablo@netfilter.org>2009-06-02 20:08:46 +0200
committerpablo <pablo@1984.(none)>2009-06-02 20:08:46 +0200
commit17e6e4eac070607a35464ea7e2c5eceac32e5eca (patch)
tree3742492b50d87c07c18cec6ff2e81e1ebafdd128 /net/netfilter
parent6bfea1984aea86089907caf8974513c2402a3b3d (diff)
netfilter: conntrack: simplify event caching system
This patch simplifies the conntrack event caching system by removing several events: * IPCT_[*]_VOLATILE, IPCT_HELPINFO and IPCT_NATINFO has been deleted since the have no clients. * IPCT_COUNTER_FILLING which is a leftover of the 32-bits counter days. * IPCT_REFRESH which is not of any use since we always include the timeout in the messages. After this patch, the existing events are: * IPCT_NEW, IPCT_RELATED and IPCT_DESTROY, that are used to identify addition and deletion of entries. * IPCT_STATUS, that notes that the status bits have changes, eg. IPS_SEEN_REPLY and IPS_ASSURED. * IPCT_PROTOINFO, that reports that internal protocol information has changed, eg. the TCP, DCCP and SCTP protocol state. * IPCT_HELPER, that a helper has been assigned or unassigned to this entry. * IPCT_MARK and IPCT_SECMARK, that reports that the mark has changed, this covers the case when a mark is set to zero. * IPCT_NATSEQADJ, to report that there's updates in the NAT sequence adjustment. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter')
-rw-r--r--net/netfilter/nf_conntrack_core.c14
-rw-r--r--net/netfilter/nf_conntrack_ftp.c2
-rw-r--r--net/netfilter/nf_conntrack_netlink.c2
-rw-r--r--net/netfilter/nf_conntrack_proto_tcp.c1
4 files changed, 2 insertions, 17 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index f59c4edf905a..b54c23475e94 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -398,11 +398,7 @@ __nf_conntrack_confirm(struct sk_buff *skb)
help = nfct_help(ct);
if (help && help->helper)
nf_conntrack_event_cache(IPCT_HELPER, ct);
-#ifdef CONFIG_NF_NAT_NEEDED
- if (test_bit(IPS_SRC_NAT_DONE_BIT, &ct->status) ||
- test_bit(IPS_DST_NAT_DONE_BIT, &ct->status))
- nf_conntrack_event_cache(IPCT_NATINFO, ct);
-#endif
+
nf_conntrack_event_cache(master_ct(ct) ?
IPCT_RELATED : IPCT_NEW, ct);
return NF_ACCEPT;
@@ -807,8 +803,6 @@ void __nf_ct_refresh_acct(struct nf_conn *ct,
unsigned long extra_jiffies,
int do_acct)
{
- int event = 0;
-
NF_CT_ASSERT(ct->timeout.data == (unsigned long)ct);
NF_CT_ASSERT(skb);
@@ -821,7 +815,6 @@ void __nf_ct_refresh_acct(struct nf_conn *ct,
/* If not in hash table, timer will not be active yet */
if (!nf_ct_is_confirmed(ct)) {
ct->timeout.expires = extra_jiffies;
- event = IPCT_REFRESH;
} else {
unsigned long newtime = jiffies + extra_jiffies;
@@ -832,7 +825,6 @@ void __nf_ct_refresh_acct(struct nf_conn *ct,
&& del_timer(&ct->timeout)) {
ct->timeout.expires = newtime;
add_timer(&ct->timeout);
- event = IPCT_REFRESH;
}
}
@@ -849,10 +841,6 @@ acct:
}
spin_unlock_bh(&nf_conntrack_lock);
-
- /* must be unlocked when calling event cache */
- if (event)
- nf_conntrack_event_cache(event, ct);
}
EXPORT_SYMBOL_GPL(__nf_ct_refresh_acct);
diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c
index 00fecc385f9b..5509dd1f14cf 100644
--- a/net/netfilter/nf_conntrack_ftp.c
+++ b/net/netfilter/nf_conntrack_ftp.c
@@ -338,11 +338,9 @@ static void update_nl_seq(struct nf_conn *ct, u32 nl_seq,
if (info->seq_aft_nl_num[dir] < NUM_SEQ_TO_REMEMBER) {
info->seq_aft_nl[dir][info->seq_aft_nl_num[dir]++] = nl_seq;
- nf_conntrack_event_cache(IPCT_HELPINFO_VOLATILE, ct);
} else if (oldest != NUM_SEQ_TO_REMEMBER &&
after(nl_seq, info->seq_aft_nl[dir][oldest])) {
info->seq_aft_nl[dir][oldest] = nl_seq;
- nf_conntrack_event_cache(IPCT_HELPINFO_VOLATILE, ct);
}
}
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 3a20de1be63c..b1b9e4fb7ded 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -477,7 +477,7 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
type = IPCTNL_MSG_CT_NEW;
flags = NLM_F_CREATE|NLM_F_EXCL;
group = NFNLGRP_CONNTRACK_NEW;
- } else if (events & (IPCT_STATUS | IPCT_PROTOINFO)) {
+ } else if (events) {
type = IPCTNL_MSG_CT_NEW;
group = NFNLGRP_CONNTRACK_UPDATE;
} else
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 4c7f6f0dae90..b7e8a825efed 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -991,7 +991,6 @@ static int tcp_packet(struct nf_conn *ct,
timeout = tcp_timeouts[new_state];
write_unlock_bh(&tcp_lock);
- nf_conntrack_event_cache(IPCT_PROTOINFO_VOLATILE, ct);
if (new_state != old_state)
nf_conntrack_event_cache(IPCT_PROTOINFO, ct);