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authorPatrick McHardy <kaber@trash.net>2010-02-03 13:48:53 +0100
committerPatrick McHardy <kaber@trash.net>2010-02-03 13:48:53 +0100
commit858b31330054a9ad259feceea0ad1ce5385c47f0 (patch)
tree642349680ff9c29d506dd7661bbc8b724209fbf5 /net/netfilter
parentadd67461240c1dadc7c8d97e66f8f92b556ca523 (diff)
downloadlinux-858b31330054a9ad259feceea0ad1ce5385c47f0.tar.bz2
netfilter: nf_conntrack: split up IPCT_STATUS event
Split up the IPCT_STATUS event into an IPCT_REPLY event, which is generated when the IPS_SEEN_REPLY bit is set, and an IPCT_ASSURED event, which is generated when the IPS_ASSURED bit is set. In combination with a following patch to support selective event delivery, this can be used for "sparse" conntrack replication: start replicating the conntrack entry after it reached the ASSURED state and that way it's SYN-flood resistant. Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/netfilter')
-rw-r--r--net/netfilter/nf_conntrack_core.c2
-rw-r--r--net/netfilter/nf_conntrack_netlink.c6
-rw-r--r--net/netfilter/nf_conntrack_proto_gre.c2
-rw-r--r--net/netfilter/nf_conntrack_proto_sctp.c2
-rw-r--r--net/netfilter/nf_conntrack_proto_tcp.c2
-rw-r--r--net/netfilter/nf_conntrack_proto_udp.c2
-rw-r--r--net/netfilter/nf_conntrack_proto_udplite.c2
7 files changed, 10 insertions, 8 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 0e98c3282d42..091ff770eb7b 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -825,7 +825,7 @@ nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
}
if (set_reply && !test_and_set_bit(IPS_SEEN_REPLY_BIT, &ct->status))
- nf_conntrack_event_cache(IPCT_STATUS, ct);
+ nf_conntrack_event_cache(IPCT_REPLY, ct);
return ret;
}
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 16f86d61e5d1..ff594eb138c1 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1371,7 +1371,8 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
else
events = IPCT_NEW;
- nf_conntrack_eventmask_report((1 << IPCT_STATUS) |
+ nf_conntrack_eventmask_report((1 << IPCT_REPLY) |
+ (1 << IPCT_ASSURED) |
(1 << IPCT_HELPER) |
(1 << IPCT_PROTOINFO) |
(1 << IPCT_NATSEQADJ) |
@@ -1396,7 +1397,8 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
if (err == 0) {
nf_conntrack_get(&ct->ct_general);
spin_unlock_bh(&nf_conntrack_lock);
- nf_conntrack_eventmask_report((1 << IPCT_STATUS) |
+ nf_conntrack_eventmask_report((1 << IPCT_REPLY) |
+ (1 << IPCT_ASSURED) |
(1 << IPCT_HELPER) |
(1 << IPCT_PROTOINFO) |
(1 << IPCT_NATSEQADJ) |
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index c99cfba64ddc..d899b1a69940 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -241,7 +241,7 @@ static int gre_packet(struct nf_conn *ct,
ct->proto.gre.stream_timeout);
/* Also, more likely to be important, and not a probe. */
set_bit(IPS_ASSURED_BIT, &ct->status);
- nf_conntrack_event_cache(IPCT_STATUS, ct);
+ nf_conntrack_event_cache(IPCT_ASSURED, ct);
} else
nf_ct_refresh_acct(ct, ctinfo, skb,
ct->proto.gre.timeout);
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index f9d930f80276..b68ff15ed979 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -377,7 +377,7 @@ static int sctp_packet(struct nf_conn *ct,
new_state == SCTP_CONNTRACK_ESTABLISHED) {
pr_debug("Setting assured bit\n");
set_bit(IPS_ASSURED_BIT, &ct->status);
- nf_conntrack_event_cache(IPCT_STATUS, ct);
+ nf_conntrack_event_cache(IPCT_ASSURED, ct);
}
return NF_ACCEPT;
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 3c96437b45ad..ad118053971a 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -1045,7 +1045,7 @@ static int tcp_packet(struct nf_conn *ct,
after SYN_RECV or a valid answer for a picked up
connection. */
set_bit(IPS_ASSURED_BIT, &ct->status);
- nf_conntrack_event_cache(IPCT_STATUS, ct);
+ nf_conntrack_event_cache(IPCT_ASSURED, ct);
}
nf_ct_refresh_acct(ct, ctinfo, skb, timeout);
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 5c5518bedb4b..8d38f9a4bed8 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -77,7 +77,7 @@ static int udp_packet(struct nf_conn *ct,
nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udp_timeout_stream);
/* Also, more likely to be important, and not a probe */
if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
- nf_conntrack_event_cache(IPCT_STATUS, ct);
+ nf_conntrack_event_cache(IPCT_ASSURED, ct);
} else
nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udp_timeout);
diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c
index 458655bb2106..0b1bc9ba6678 100644
--- a/net/netfilter/nf_conntrack_proto_udplite.c
+++ b/net/netfilter/nf_conntrack_proto_udplite.c
@@ -75,7 +75,7 @@ static int udplite_packet(struct nf_conn *ct,
nf_ct_udplite_timeout_stream);
/* Also, more likely to be important, and not a probe */
if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
- nf_conntrack_event_cache(IPCT_STATUS, ct);
+ nf_conntrack_event_cache(IPCT_ASSURED, ct);
} else
nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udplite_timeout);