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[NETFILTER]: ctnetlink: rework conntrack fields dumping logic on events
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               |   NEW   | UPDATE  | DESTROY |
     ----------------------------------------|
     tuples    |    Y    |    Y    |    Y    |
     status    |    Y    |    Y    |    N    |
     timeout   |    Y    |    Y    |    N    |
     protoinfo |    S    |    S    |    N    |
     helper    |    S    |    S    |    N    |
     mark      |    S    |    S    |    N    |
     counters  |    F    |    F    |    Y    |

 Leyend:
         Y: yes
         N: no
         S: iif the field is set
	 F: iif overflow

This patch also replace IPCT_HELPINFO by IPCT_HELPER since we want to
track the helper assignation process, not the changes in the private
information held by the helper.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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@ummakynes
ummakynes authored and David S. Miller committed Dec 3, 2006
1 parent bbb3357 commit 7b621c1
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Showing 2 changed files with 54 additions and 44 deletions.
49 changes: 27 additions & 22 deletions net/ipv4/netfilter/ip_conntrack_netlink.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -320,8 +320,6 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
} else if (events & (IPCT_NEW | IPCT_RELATED)) {
type = IPCTNL_MSG_CT_NEW;
flags = NLM_F_CREATE|NLM_F_EXCL;
/* dump everything */
events = ~0UL;
group = NFNLGRP_CONNTRACK_NEW;
} else if (events & (IPCT_STATUS | IPCT_PROTOINFO)) {
type = IPCTNL_MSG_CT_NEW;
Expand Down Expand Up @@ -356,28 +354,35 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
if (ctnetlink_dump_tuples(skb, tuple(ct, IP_CT_DIR_REPLY)) < 0)
goto nfattr_failure;
NFA_NEST_END(skb, nest_parms);

/* NAT stuff is now a status flag */
if ((events & IPCT_STATUS || events & IPCT_NATINFO)
&& ctnetlink_dump_status(skb, ct) < 0)
goto nfattr_failure;
if (events & IPCT_REFRESH
&& ctnetlink_dump_timeout(skb, ct) < 0)
goto nfattr_failure;
if (events & IPCT_PROTOINFO
&& ctnetlink_dump_protoinfo(skb, ct) < 0)
goto nfattr_failure;
if (events & IPCT_HELPINFO
&& ctnetlink_dump_helpinfo(skb, ct) < 0)
goto nfattr_failure;

if (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0)
goto nfattr_failure;
if (events & IPCT_DESTROY) {
if (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0)
goto nfattr_failure;
} else {
if (ctnetlink_dump_status(skb, ct) < 0)
goto nfattr_failure;

if (events & IPCT_MARK
&& ctnetlink_dump_mark(skb, ct) < 0)
goto nfattr_failure;
if (ctnetlink_dump_timeout(skb, ct) < 0)
goto nfattr_failure;

if (events & IPCT_PROTOINFO
&& ctnetlink_dump_protoinfo(skb, ct) < 0)
goto nfattr_failure;

if ((events & IPCT_HELPER || ct->helper)
&& ctnetlink_dump_helpinfo(skb, ct) < 0)
goto nfattr_failure;

if ((events & IPCT_MARK || ct->mark)
&& ctnetlink_dump_mark(skb, ct) < 0)
goto nfattr_failure;

if (events & IPCT_COUNTER_FILLING &&
(ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0))
goto nfattr_failure;
}

nlh->nlmsg_len = skb->tail - b;
nfnetlink_send(skb, 0, group, 0);
Expand Down
49 changes: 27 additions & 22 deletions net/netfilter/nf_conntrack_netlink.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -331,8 +331,6 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
} else if (events & (IPCT_NEW | IPCT_RELATED)) {
type = IPCTNL_MSG_CT_NEW;
flags = NLM_F_CREATE|NLM_F_EXCL;
/* dump everything */
events = ~0UL;
group = NFNLGRP_CONNTRACK_NEW;
} else if (events & (IPCT_STATUS | IPCT_PROTOINFO)) {
type = IPCTNL_MSG_CT_NEW;
Expand Down Expand Up @@ -367,28 +365,35 @@ static int ctnetlink_conntrack_event(struct notifier_block *this,
if (ctnetlink_dump_tuples(skb, tuple(ct, IP_CT_DIR_REPLY)) < 0)
goto nfattr_failure;
NFA_NEST_END(skb, nest_parms);

/* NAT stuff is now a status flag */
if ((events & IPCT_STATUS || events & IPCT_NATINFO)
&& ctnetlink_dump_status(skb, ct) < 0)
goto nfattr_failure;
if (events & IPCT_REFRESH
&& ctnetlink_dump_timeout(skb, ct) < 0)
goto nfattr_failure;
if (events & IPCT_PROTOINFO
&& ctnetlink_dump_protoinfo(skb, ct) < 0)
goto nfattr_failure;
if (events & IPCT_HELPINFO
&& ctnetlink_dump_helpinfo(skb, ct) < 0)
goto nfattr_failure;

if (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0)
goto nfattr_failure;
if (events & IPCT_DESTROY) {
if (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0)
goto nfattr_failure;
} else {
if (ctnetlink_dump_status(skb, ct) < 0)
goto nfattr_failure;

if (events & IPCT_MARK
&& ctnetlink_dump_mark(skb, ct) < 0)
goto nfattr_failure;
if (ctnetlink_dump_timeout(skb, ct) < 0)
goto nfattr_failure;

if (events & IPCT_PROTOINFO
&& ctnetlink_dump_protoinfo(skb, ct) < 0)
goto nfattr_failure;

if ((events & IPCT_HELPER || nfct_help(ct))
&& ctnetlink_dump_helpinfo(skb, ct) < 0)
goto nfattr_failure;

if ((events & IPCT_MARK || ct->mark)
&& ctnetlink_dump_mark(skb, ct) < 0)
goto nfattr_failure;

if (events & IPCT_COUNTER_FILLING &&
(ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0))
goto nfattr_failure;
}

nlh->nlmsg_len = skb->tail - b;
nfnetlink_send(skb, 0, group, 0);
Expand Down

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