| 6aafeef03b9d9ecf255f3a80ed85ee070260e1ae |
|
06-Nov-2013 |
Jiri Pirko <jiri@resnulli.us> |
netfilter: push reasm skb through instead of original frag skbs
Pushing original fragments through causes several problems. For example
for matching, frags may not be matched correctly. Take following
example:
<example>
On HOSTA do:
ip6tables -I INPUT -p icmpv6 -j DROP
ip6tables -I INPUT -p icmpv6 -m icmp6 --icmpv6-type 128 -j ACCEPT
and on HOSTB you do:
ping6 HOSTA -s2000 (MTU is 1500)
Incoming echo requests will be filtered out on HOSTA. This issue does
not occur with smaller packets than MTU (where fragmentation does not happen)
</example>
As was discussed previously, the only correct solution seems to be to use
reassembled skb instead of separete frags. Doing this has positive side
effects in reducing sk_buff by one pointer (nfct_reasm) and also the reams
dances in ipvs and conntrack can be removed.
Future plan is to remove net/ipv6/netfilter/nf_conntrack_reasm.c
entirely and use code in net/ipv6/reassembly.c instead.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 795aa6ef6a1aba99050735eadd0c2341b789b53b |
|
10-Oct-2013 |
Patrick McHardy <kaber@trash.net> |
netfilter: pass hook ops to hookfn
Pass the hook ops to the hookfn to allow for generic hook
functions. This change is required by nf_tables.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| efe4208f47f907b86f528788da711e8ab9dea44d |
|
04-Oct-2013 |
Eric Dumazet <edumazet@google.com> |
ipv6: make lookups simpler and faster
TCP listener refactoring, part 4 :
To speed up inet lookups, we moved IPv4 addresses from inet to struct
sock_common
Now is time to do the same for IPv6, because it permits us to have fast
lookups for all kind of sockets, including upcoming SYN_RECV.
Getting IPv6 addresses in TCP lookups currently requires two extra cache
lines, plus a dereference (and memory stall).
inet6_sk(sk) does the dereference of inet_sk(__sk)->pinet6
This patch is way bigger than its IPv4 counter part, because for IPv4,
we could add aliases (inet_daddr, inet_rcv_saddr), while on IPv6,
it's not doable easily.
inet6_sk(sk)->daddr becomes sk->sk_v6_daddr
inet6_sk(sk)->rcv_saddr becomes sk->sk_v6_rcv_saddr
And timewait socket also have tw->tw_v6_daddr & tw->tw_v6_rcv_saddr
at the same offset.
We get rid of INET6_TW_MATCH() as INET6_MATCH() is now the generic
macro.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 41d73ec053d2424599c4ed8452b889374d523ade |
|
27-Aug-2013 |
Patrick McHardy <kaber@trash.net> |
netfilter: nf_conntrack: make sequence number adjustments usuable without NAT
Split out sequence number adjustments from NAT and move them to the conntrack
core to make them usable for SYN proxying. The sequence number adjustment
information is moved to a seperate extend. The extend is added to new
conntracks when a NAT mapping is set up for a connection using a helper.
As a side effect, this saves 24 bytes per connection with NAT in the common
case that a connection does not have a helper assigned.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Tested-by: Martin Topholm <mph@one.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| 142dcdd3c25fc7a3866bb06980e8f93a2ed7e050 |
|
19-Jun-2013 |
Phil Oester <kernel@linuxace.com> |
netfilter: nf_conntrack_ipv6: Plug sk_buff leak in fragment handling
In commit 4cdd3408 ("netfilter: nf_conntrack_ipv6: improve fragmentation
handling"), an sk_buff leak was introduced when dealing with reassembled
packets by grabbing a reference to the original skb instead of the
reassembled skb. At this point, the leak only impacted conntracks with an
associated helper.
In commit 58a317f1 ("netfilter: ipv6: add IPv6 NAT support"), the bug was
expanded to include all reassembled packets with unconfirmed conntracks.
Fix this by grabbing a reference to the proper reassembled skb. This
closes netfilter bugzilla #823.
Signed-off-by: Phil Oester <kernel@linuxace.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| d00bd3d4fba89e6f7ffb94a5f9274cce49dc84a7 |
|
12-Mar-2013 |
Hannes Frederic Sowa <hannes@stressinduktion.org> |
netfilter: nf_ct_ipv6: use ipv6_iface_scope_id in conntrack to return scope id
As in (842df07 ipv6: use newly introduced __ipv6_addr_needs_scope_id and
ipv6_iface_scope_id).
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| b20ab9cc63ca4605aec154cf54faa8455749f3f6 |
|
10-Feb-2013 |
Pablo Neira Ayuso <pablo@netfilter.org> |
netfilter: nf_ct_helper: better logging for dropped packets
Connection tracking helpers have to drop packets under exceptional
situations. Currently, the user gets the following logging message
in case that happens:
nf_ct_%s: dropping packet ...
However, depending on the helper, there are different reasons why a
packet can be dropped.
This patch modifies the existing code to provide more specific
error message in the scope of each helper to help users to debug
the reason why the packet has been dropped, ie:
nf_ct_%s: dropping packet: reason ...
Thanks to Joe Perches for many formatting suggestions.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| c296bb4d5d417d466c9bcc8afef68a3db5449a64 |
|
23-Jan-2013 |
Gao feng <gaofeng@cn.fujitsu.com> |
netfilter: nf_conntrack: refactor l4proto support for netns
Move the code that register/unregister l4proto to the
module_init/exit context.
Given that we have to modify some interfaces to accomodate
these changes, it is a good time to use shorter function names
for this using the nf_ct_* prefix instead of nf_conntrack_*,
that is:
nf_ct_l4proto_register
nf_ct_l4proto_pernet_register
nf_ct_l4proto_unregister
nf_ct_l4proto_pernet_unregister
We same many line breaks with it.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| 6330750d566d764ce4916d8fe2bcdcad28fc7a42 |
|
21-Jan-2013 |
Gao feng <gaofeng@cn.fujitsu.com> |
netfilter: nf_conntrack: refactor l3proto support for netns
Move the code that register/unregister l3proto to the
module_init/exit context.
Given that we have to modify some interfaces to accomodate
these changes, it is a good time to use shorter function names
for this using the nf_ct_* prefix instead of nf_conntrack_*,
that is:
nf_ct_l3proto_register
nf_ct_l3proto_pernet_register
nf_ct_l3proto_unregister
nf_ct_l3proto_pernet_unregister
We same many line breaks with it.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| d7a769ff0e8f908ae8113fe523e7806b6d0b5fc7 |
|
14-Dec-2012 |
Florent Fourcot <florent.fourcot@enst-bretagne.fr> |
netfilter: nf_conntrack_ipv6: fix comment for packets without data
Remove ambiguity of double negation.
Signed-off-by: Florent Fourcot <florent.fourcot@enst-bretagne.fr>
Acked-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| d3976a53ce1f4763cb910d047e8763e4c696e5f7 |
|
13-Nov-2012 |
Florian Westphal <fw@strlen.de> |
netfilter: ipv6: only provide sk_bound_dev_if for link-local addr
yoshfuji points out that sk_bound_dev_if should only be provided
for link-local addresses.
IPv6 getpeer/sockname also has this test, i.e. we will now
only set sin6_scope_id if the original(!) destination
was a link-local address.
Reported-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| 121d1e0941e05c64ee4223064dd83eb24e871739 |
|
30-Oct-2012 |
Florian Westphal <fw@strlen.de> |
netfilter: ipv6: add getsockopt to retrieve origdst
userspace can query the original ipv4 destination address of a REDIRECTed
connection via
getsockopt(m_sock, SOL_IP, SO_ORIGINAL_DST, &m_server_addr, &addrsize)
but for ipv6 no such option existed.
This adds getsockopt(..., IPPROTO_IPV6, IP6T_SO_ORIGINAL_DST, ...).
Without this, userspace needs to parse /proc or use ctnetlink, which
appears to be overkill.
This uses option number 80 for IP6T_SO_ORIGINAL_DST, which is spare,
to use the same number we use in the IPv4 socket option SO_ORIGINAL_DST.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| 07a936260a94ae4798527ce8f79d4f3b589ab8a3 |
|
29-Oct-2012 |
Amerigo Wang <amwang@redhat.com> |
ipv6: use IS_ENABLED()
#if defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE)
can be replaced by
#if IS_ENABLED(CONFIG_FOO)
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 58a317f1061c894d2344c0b6a18ab4a64b69b815 |
|
26-Aug-2012 |
Patrick McHardy <kaber@trash.net> |
netfilter: ipv6: add IPv6 NAT support
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 2b60af017880f7dc35d1fac65f48fc94f8a3c1ec |
|
26-Aug-2012 |
Patrick McHardy <kaber@trash.net> |
netfilter: nf_conntrack_ipv6: fix tracking of ICMPv6 error messages containing fragments
ICMPv6 error messages are tracked by extracting the conntrack tuple of
the inner packet and looking up the corresponding conntrack entry. Tuple
extraction uses the ->get_l4proto() callback, which in case of fragments
returns NEXTHDR_FRAGMENT instead of the upper protocol, even for the
first fragment when the entire next header is present, resulting in a
failure to find the correct connection tracking entry.
This patch changes ipv6_get_l4proto() to use ipv6_skip_exthdr() instead
of nf_ct_ipv6_skip_exthdr() in order to skip fragment headers when the
fragment offset is zero.
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 4cdd34084d539c758d00c5dc7bf95db2e4f2bc70 |
|
26-Aug-2012 |
Patrick McHardy <kaber@trash.net> |
netfilter: nf_conntrack_ipv6: improve fragmentation handling
The IPv6 conntrack fragmentation currently has a couple of shortcomings.
Fragmentes are collected in PREROUTING/OUTPUT, are defragmented, the
defragmented packet is then passed to conntrack, the resulting conntrack
information is attached to each original fragment and the fragments then
continue their way through the stack.
Helper invocation occurs in the POSTROUTING hook, at which point only
the original fragments are available. The result of this is that
fragmented packets are never passed to helpers.
This patch improves the situation in the following way:
- If a reassembled packet belongs to a connection that has a helper
assigned, the reassembled packet is passed through the stack instead
of the original fragments.
- During defragmentation, the largest received fragment size is stored.
On output, the packet is refragmented if required. If the largest
received fragment size exceeds the outgoing MTU, a "packet too big"
message is generated, thus behaving as if the original fragments
were passed through the stack from an outside point of view.
- The ipv6_helper() hook function can't receive fragments anymore for
connections using a helper, so it is switched to use ipv6_skip_exthdr()
instead of the netfilter specific nf_ct_ipv6_skip_exthdr() and the
reassembled packets are passed to connection tracking helpers.
The result of this is that we can properly track fragmented packets, but
still generate ICMPv6 Packet too big messages if we would have before.
This patch is also required as a precondition for IPv6 NAT, where NAT
helpers might enlarge packets up to a point that they require
fragmentation. In that case we can't generate Packet too big messages
since the proper MTU can't be calculated in all cases (f.i. when
changing textual representation of a variable amount of addresses),
so the packet is transparently fragmented iff the original packet or
fragments would have fit the outgoing MTU.
IPVS parts by Jesper Dangaard Brouer <brouer@redhat.com>.
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 12f7a505331e6b2754684b509f2ac8f0011ce644 |
|
13-May-2012 |
Pablo Neira Ayuso <pablo@netfilter.org> |
netfilter: add user-space connection tracking helper infrastructure
There are good reasons to supports helpers in user-space instead:
* Rapid connection tracking helper development, as developing code
in user-space is usually faster.
* Reliability: A buggy helper does not crash the kernel. Moreover,
we can monitor the helper process and restart it in case of problems.
* Security: Avoid complex string matching and mangling in kernel-space
running in privileged mode. Going further, we can even think about
running user-space helpers as a non-root process.
* Extensibility: It allows the development of very specific helpers (most
likely non-standard proprietary protocols) that are very likely not to be
accepted for mainline inclusion in the form of kernel-space connection
tracking helpers.
This patch adds the infrastructure to allow the implementation of
user-space conntrack helpers by means of the new nfnetlink subsystem
`nfnetlink_cthelper' and the existing queueing infrastructure
(nfnetlink_queue).
I had to add the new hook NF_IP6_PRI_CONNTRACK_HELPER to register
ipv[4|6]_helper which results from splitting ipv[4|6]_confirm into
two pieces. This change is required not to break NAT sequence
adjustment and conntrack confirmation for traffic that is enqueued
to our user-space conntrack helpers.
Basic operation, in a few steps:
1) Register user-space helper by means of `nfct':
nfct helper add ftp inet tcp
[ It must be a valid existing helper supported by conntrack-tools ]
2) Add rules to enable the FTP user-space helper which is
used to track traffic going to TCP port 21.
For locally generated packets:
iptables -I OUTPUT -t raw -p tcp --dport 21 -j CT --helper ftp
For non-locally generated packets:
iptables -I PREROUTING -t raw -p tcp --dport 21 -j CT --helper ftp
3) Run the test conntrackd in helper mode (see example files under
doc/helper/conntrackd.conf
conntrackd
4) Generate FTP traffic going, if everything is OK, then conntrackd
should create expectations (you can check that with `conntrack':
conntrack -E expect
[NEW] 301 proto=6 src=192.168.1.136 dst=130.89.148.12 sport=0 dport=54037 mask-src=255.255.255.255 mask-dst=255.255.255.255 sport=0 dport=65535 master-src=192.168.1.136 master-dst=130.89.148.12 sport=57127 dport=21 class=0 helper=ftp
[DESTROY] 301 proto=6 src=192.168.1.136 dst=130.89.148.12 sport=0 dport=54037 mask-src=255.255.255.255 mask-dst=255.255.255.255 sport=0 dport=65535 master-src=192.168.1.136 master-dst=130.89.148.12 sport=57127 dport=21 class=0 helper=ftp
This confirms that our test helper is receiving packets including the
conntrack information, and adding expectations in kernel-space.
The user-space helper can also store its private tracking information
in the conntrack structure in the kernel via the CTA_HELP_INFO. The
kernel will consider this a binary blob whose layout is unknown. This
information will be included in the information that is transfered
to user-space via glue code that integrates nfnetlink_queue and
ctnetlink.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| a7c439d3968e67c426f75fe7d455f214e52f1ab0 |
|
28-May-2012 |
Gao feng <gaofeng@cn.fujitsu.com> |
netfilter: nf_ct_ipv6: add namespace support
This patch adds namespace support for IPv6 protocol tracker.
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| 524a53e5ad5f34f64ed34281e8b0eca19437db5b |
|
28-May-2012 |
Gao feng <gaofeng@cn.fujitsu.com> |
netfilter: nf_conntrack: prepare namespace support for l3 protocol trackers
This patch prepares the namespace support for layer 3 protocol trackers.
Basically, this modifies the following interfaces:
* nf_ct_l3proto_[un]register_sysctl.
* nf_conntrack_l3proto_[un]register.
We add a new nf_ct_l3proto_net is used to get the pernet data of l3proto.
This adds rhe new struct nf_ip_net that is used to store the sysctl header
and l3proto_ipv4,l4proto_tcp(6),l4proto_udp(6),l4proto_icmp(v6) because the
protos such tcp and tcp6 use the same data,so making nf_ip_net as a field
of netns_ct is the easiest way to manager it.
This patch also adds init_net to struct nf_conntrack_l3proto to initial
the layer 3 protocol pernet data.
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| 2c352f444ccfa966a1aa4fd8e9ee29381c467448 |
|
28-May-2012 |
Gao feng <gaofeng@cn.fujitus.com> |
netfilter: nf_conntrack: prepare namespace support for l4 protocol trackers
This patch prepares the namespace support for layer 4 protocol trackers.
Basically, this modifies the following interfaces:
* nf_ct_[un]register_sysctl
* nf_conntrack_l4proto_[un]register
to include the namespace parameter. We still use init_net in this patch
to prepare the ground for follow-up patches for each layer 4 protocol
tracker.
We add a new net_id field to struct nf_conntrack_l4proto that is used
to store the pernet_operations id for each layer 4 protocol tracker.
Note that AF_INET6's protocols do not need to do sysctl compat. Thus,
we only register compat sysctl when l4proto.l3proto != AF_INET6.
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| e87cc4728f0e2fb663e592a1141742b1d6c63256 |
|
13-May-2012 |
Joe Perches <joe@perches.com> |
net: Convert net_ratelimit uses to net_<level>_ratelimited
Standardize the net core ratelimited logging functions.
Coalesce formats, align arguments.
Change a printk then vprintk sequence to use printf extension %pV.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| e549a6b3a5acff66f0427091e44f814943a26a86 |
|
02-Apr-2012 |
David S. Miller <davem@davemloft.net> |
netfilter: ipv6: Stop using NLA_PUT*().
These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| fb04883371f2cb7867d24783e7d590036dc9b548 |
|
19-May-2011 |
Eric Dumazet <eric.dumazet@gmail.com> |
netfilter: add more values to enum ip_conntrack_info
Following error is raised (and other similar ones) :
net/ipv4/netfilter/nf_nat_standalone.c: In function ‘nf_nat_fn’:
net/ipv4/netfilter/nf_nat_standalone.c:119:2: warning: case value ‘4’
not in enumerated type ‘enum ip_conntrack_info’
gcc barfs on adding two enum values and getting a not enumerated
result :
case IP_CT_RELATED+IP_CT_IS_REPLY:
Add missing enum values
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Miller <davem@davemloft.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
| e97c3e278e951501c2f385de70c3ceacdea78c4a |
|
21-Oct-2010 |
Balazs Scheidler <bazsi@balabit.hu> |
tproxy: split off ipv6 defragmentation to a separate module
Like with IPv4, TProxy needs IPv6 defragmentation but does not
require connection tracking. Since defragmentation was coupled
with conntrack, I split off the two, creating an nf_defrag_ipv6 module,
similar to the already existing nf_defrag_ipv4.
Signed-off-by: Balazs Scheidler <bazsi@balabit.hu>
Signed-off-by: KOVACS Krisztian <hidden@balabit.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 654d0fbdc8fe1041918741ed5b6abc8ad6b4c1d8 |
|
13-May-2010 |
Stephen Hemminger <shemminger@vyatta.com> |
netfilter: cleanup printk messages
Make sure all printk messages have a severity level.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 5d0aa2ccd4699a01cfdf14886191c249d7b45a01 |
|
15-Feb-2010 |
Patrick McHardy <kaber@trash.net> |
netfilter: nf_conntrack: add support for "conntrack zones"
Normally, each connection needs a unique identity. Conntrack zones allow
to specify a numerical zone using the CT target, connections in different
zones can use the same identity.
Example:
iptables -t raw -A PREROUTING -i veth0 -j CT --zone 1
iptables -t raw -A OUTPUT -o veth1 -j CT --zone 1
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| b2a15a604d379af323645e330638e2cfcc696aff |
|
03-Feb-2010 |
Patrick McHardy <kaber@trash.net> |
netfilter: nf_conntrack: support conntrack templates
Support initializing selected parameters of new conntrack entries from a
"conntrack template", which is a specially marked conntrack entry attached
to the skb.
Currently the helper and the event delivery masks can be initialized this
way.
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 8fa9ff6849bb86c59cc2ea9faadf3cb2d5223497 |
|
15-Dec-2009 |
Patrick McHardy <kaber@trash.net> |
netfilter: fix crashes in bridge netfilter caused by fragment jumps
When fragments from bridge netfilter are passed to IPv4 or IPv6 conntrack
and a reassembly queue with the same fragment key already exists from
reassembling a similar packet received on a different device (f.i. with
multicasted fragments), the reassembled packet might continue on a different
codepath than where the head fragment originated. This can cause crashes
in bridge netfilter when a fragment received on a non-bridge device (and
thus with skb->nf_bridge == NULL) continues through the bridge netfilter
code.
Add a new reassembly identifier for packets originating from bridge
netfilter and use it to put those packets in insolated queues.
Fixes http://bugzilla.kernel.org/show_bug.cgi?id=14805
Reported-and-Tested-by: Chong Qiao <qiaochong@loongson.cn>
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 0b5ccb2ee250136dd7385b1c7da28417d0d4d32d |
|
15-Dec-2009 |
Patrick McHardy <kaber@trash.net> |
ipv6: reassembly: use seperate reassembly queues for conntrack and local delivery
Currently the same reassembly queue might be used for packets reassembled
by conntrack in different positions in the stack (PREROUTING/LOCAL_OUT),
as well as local delivery. This can cause "packet jumps" when the fragment
completing a reassembled packet is queued from a different position in the
stack than the previous ones.
Add a "user" identifier to the reassembly queue key to seperate the queues
of each caller, similar to what we do for IPv4.
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 74f7a6552c8d76ffc5e11eb8d9d6c07238b9ae77 |
|
25-Aug-2009 |
Patrick McHardy <kaber@trash.net> |
netfilter: nf_conntrack: log packets dropped by helpers
Log packets dropped by helpers using the netfilter logging API. This
is useful in combination with nfnetlink_log to analyze those packets
in userspace for debugging.
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 57750a22ed022ed6fcdcc5bc58d16011ccfe575f |
|
13-Jun-2009 |
Jan Engelhardt <jengelh@medozas.de> |
netfilter: conntrack: switch hook PFs to nfproto
Simple substitution to indicate that the fields indeed use the
NFPROTO_ space.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
|
| a400c30edb1958ceb53c4b8ce78989189b36df47 |
|
25-Mar-2009 |
Holger Eitzenberger <holger@eitzenberger.org> |
netfilter: nf_conntrack: calculate per-protocol nlattr size
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 9d2493f88f846b391a15a736efc7f4b97d6c4046 |
|
16-Mar-2009 |
Christoph Paasch <christoph.paasch@gmail.com> |
netfilter: remove IPvX specific parts from nf_conntrack_l4proto.h
Moving the structure definitions to the corresponding IPvX specific header files.
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 5b095d98928fdb9e3b75be20a54b7a6cbf6ca9ad |
|
29-Oct-2008 |
Harvey Harrison <harvey.harrison@gmail.com> |
net: replace %p6 with %pI6
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 0c6ce78abf6e228d44c3840edb8a4ae0c1299825 |
|
29-Oct-2008 |
Harvey Harrison <harvey.harrison@gmail.com> |
net: replace uses of NIP6_FMT with %p6
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| a702a65fc1376fc1f6757ec2a6960348af3f1876 |
|
08-Oct-2008 |
Alexey Dobriyan <adobriyan@gmail.com> |
netfilter: netns nf_conntrack: pass netns pointer to nf_conntrack_in()
It's deducible from skb->dev or skb->dst->dev, but we know netns at
the moment of call, so pass it down and use for finding and creating
conntracks.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 8ce8439a31f723f3aa28adf27fe8797a5678dde1 |
|
14-Apr-2008 |
Jan Engelhardt <jengelh@computergmbh.de> |
[NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l3proto
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 32948588ac4ec54300bae1037e839277fd4536e2 |
|
31-Jan-2008 |
Jan Engelhardt <jengelh@computergmbh.de> |
[NETFILTER]: nf_conntrack: annotate l3protos with const
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 8d8354d2fb9277f165715a6e1cb92bcc89259975 |
|
22-Jan-2008 |
Pavel Emelyanov <xemul@openvz.org> |
[NETNS][FRAGS]: Move ctl tables around.
This is a preparation for sysctl netns-ization.
Move the ctl tables to the files, where the tuning
variables reside. Plus make the helpers to register
the tables.
This will simplify the later patches and will keep
similar things closer to each other.
ipv4, ipv6 and conntrack_reasm are patched differently,
but the result is all the tables are in appropriate files.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| c56cc9c07b049acc9d2ca97be0b540978c0c80bf |
|
15-Jan-2008 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nf_conntrack: remove print_conntrack function from l3protos
Its unused and unlikely to ever be used.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 1999414a4ece2b8cea3fb3c4dc8fe06796256269 |
|
05-Dec-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: Mark hooks __read_mostly
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 6e23ae2a48750bda407a4a58f52a4865d7308bf5 |
|
20-Nov-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: Introduce NF_INET_ hook values
The IPv4 and IPv6 hook values are identical, yet some code tries to figure
out the "correct" value by looking at the address family. Introduce NF_INET_*
values for both IPv4 and IPv6. The old values are kept in a #ifndef __KERNEL__
section for userspace compatibility.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 064b5bba0cc495201729285c6a6ce205df0a386a |
|
18-Oct-2007 |
Eric W. Biederman <ebiederm@xmission.com> |
sysctl: remove broken netfilter binary sysctls
No one has bothered to set strategy routine for the the netfilter sysctls that
return jiffies to be sysctl_jiffies.
So it appears the sys_sysctl path is unused and untested, so this patch
removes the binary sysctl numbers.
Which fixes the netfilter oops in 2.6.23-rc2-mm2 for me.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| 04128f233f2b344f3438cde09723e9946463a573 |
|
15-Oct-2007 |
Pavel Emelyanov <xemul@openvz.org> |
[INET]: Collect common frag sysctl variables together
Some sysctl variables are used to tune the frag queues
management and it will be useful to work with them in
a common way in the future, so move them into one
structure, moreover they are the same for all the frag
management codes.
I don't place them in the existing inet_frags object,
introduced in the previous patch for two reasons:
1. to keep them in the __read_mostly section;
2. not to export the whole inet_frags objects outside.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 3db05fea51cdb162cfa8f69e9cfb9e228919d2a9 |
|
15-Oct-2007 |
Herbert Xu <herbert@gondor.apana.org.au> |
[NETFILTER]: Replace sk_buff ** with sk_buff *
With all the users of the double pointers removed, this patch mops up by
finally replacing all occurances of sk_buff ** in the netfilter API by
sk_buff *.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| f73e924cdd166360e8cc9a1b193008fdc9b3e3e2 |
|
28-Sep-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: ctnetlink: use netlink policy
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| fdf708322d4658daa6eb795d1a835b97efdb335e |
|
28-Sep-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nfnetlink: rename functions containing 'nfattr'
There is no struct nfattr anymore, rename functions to 'nlattr'.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| df6fb868d6118686805c2fa566e213a8f31c8e4f |
|
28-Sep-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nfnetlink: convert to generic netlink attribute functions
Get rid of the duplicated rtnetlink macros and use the generic netlink
attribute functions. The old duplicated stuff is moved to a new header
file that exists just for userspace.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 1a3a206f7f2aa50545cc3d056405ad7bc3c9bca8 |
|
31-Jul-2007 |
Adrian Bunk <bunk@stusta.de> |
[NETFILTER]: Make nf_ct_ipv6_skip_exthdr() static.
nf_ct_ipv6_skip_exthdr() can now become static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 61075af51f252913401c41fbe94075b46c94e9f1 |
|
15-Jul-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nf_conntrack: mark protocols __read_mostly
Also remove two unnecessary EXPORT_SYMBOLs and move the
nf_conntrack_l3proto_ipv4 declaration to the correct file.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| ffc30690480bdd337e4914302b926d24870b56b2 |
|
15-Jul-2007 |
Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> |
[NETFILTER]: nf_conntrack: make l3proto->prepare() generic and renames it
The icmp[v6] l4proto modules parse headers in ICMP[v6] error to get tuple.
But they have to find the offset to transport protocol header before that.
Their processings are almost same as prepare() of l3proto modules.
This makes prepare() more generic to simplify icmp[v6] l4proto module
later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| d87d8469e2dd19a3a134b99f78288d41854c614b |
|
15-Jul-2007 |
Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> |
[NETFILTER]: nf_conntrack: Increment error count on parsing IPv4 header
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 0d53778e81ac7af266dac8a20cc328328c327112 |
|
08-Jul-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: Convert DEBUGP to pr_debug
Convert DEBUGP to pr_debug and fix lots of non-compiling debug statements.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| dacd2a1a5cf621288833aa3c6e815b86a1536538 |
|
08-Jul-2007 |
Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> |
[NETFILTER]: nf_conntrack: remove old memory allocator of conntrack
Now memory space for help and NAT are allocated by extension
infrastructure.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 3c158f7f57601bc27eab82f0dc4fd3fad314d845 |
|
05-Jun-2007 |
Patrick McHarrdy <kaber@trash.net> |
[NETFILTER]: nf_conntrack: fix helper module unload races
When a helper module is unloaded all conntracks refering to it have their
helper pointer NULLed out, leading to lots of races. In most places this
can be fixed by proper use of RCU (they do already check for != NULL,
but in a racy way), additionally nf_conntrack_expect_related needs to
bail out when no helper is present.
Also remove two paranoid BUG_ONs in nf_conntrack_proto_gre that are racy
and not worth fixing.
Signed-off-by: Patrick McHarrdy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 75202e76893c11ce7f8bcc9a07f994d71e3d5113 |
|
01-Jun-2007 |
Bill Nottingham <notting@redhat.com> |
[NET]: Fix comparisons of unsigned < 0.
Recent gcc versions emit warnings when unsigned variables are
compared < 0 or >= 0.
Signed-off-by: Bill Nottingham <notting@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 1b53d9042c04b8eb875d02e65792e9884efc3784 |
|
23-Mar-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: Remove changelogs and CVS IDs
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 0660e03f6b18f19b6bbafe7583265a51b90daf36 |
|
26-Apr-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h
Now the skb->nh union has just one member, .raw, i.e. it is just like the
skb->mac union, strange, no? I'm just leaving it like that till the transport
layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or
->mac_header_offset?), ditto for ->{h,nh}.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| dd63006b8fb5abf2336e145632610c6175a28fea |
|
07-Mar-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nf_conntrack_ipv6: fix incorrect classification of IPv6 fragments as ESTABLISHED
The individual fragments of a packet reassembled by conntrack have the
conntrack reference from the reassembled packet attached, but nfctinfo
is not copied. This leaves it initialized to 0, which unfortunately is
the value of IP_CT_ESTABLISHED.
The result is that all IPv6 fragments are tracked as ESTABLISHED,
allowing them to bypass a usual ruleset which accepts ESTABLISHED
packets early.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| e281db5cdfc3ab077ab3e459d098cb4fde0bc57a |
|
05-Mar-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nf_conntrack/nf_nat: fix incorrect config ifdefs
The nf_conntrack_netlink config option is named CONFIG_NF_CT_NETLINK,
but multiple files use CONFIG_IP_NF_CONNTRACK_NETLINK or
CONFIG_NF_CONNTRACK_NETLINK for ifdefs.
Fix this and reformat all CONFIG_NF_CT_NETLINK ifdefs to only use a line.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| c0e912d7ed8999f87fa7f084928aac1266e251f3 |
|
12-Feb-2007 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nf_conntrack: fix invalid conntrack statistics RCU assumption
NF_CT_STAT_INC assumes rcu_read_lock in nf_hook_slow disables
preemption as well, making it legal to use __get_cpu_var without
disabling preemption manually. The assumption is not correct anymore
with preemptable RCU, additionally we need to protect against softirqs
when not holding nf_conntrack_lock.
Add NF_CT_STAT_INC_ATOMIC macro, which disables local softirqs,
and use where necessary.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 1ab1457c42bc078e5a9becd82a7f9f940b55c53a |
|
09-Feb-2007 |
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> |
[NET] IPV6: Fix whitespace errors.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 933a41e7e12b773d1dd026018f02b86b5d257a22 |
|
29-Nov-2006 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nf_conntrack: move conntrack protocol sysctls to individual modules
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| f8eb24a89afa12b48fa7e39775faea6d64b8e538 |
|
29-Nov-2006 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: nf_conntrack: move extern declaration to header files
Using extern in a C file is a bad idea because the compiler can't
catch type errors.
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 605dcad6c85226e6d43387917b329d65b95cef39 |
|
29-Nov-2006 |
Martin Josefsson <gandalf@wlug.westbo.se> |
[NETFILTER]: nf_conntrack: rename struct nf_conntrack_protocol
Rename 'struct nf_conntrack_protocol' to 'struct nf_conntrack_l4proto' in
order to help distinguish it from 'struct nf_conntrack_l3proto'. It gets
rather confusing with 'nf_conntrack_protocol'.
Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se>
Signed-off-by: Patrick McHardy <kaber@trash.net>
|
| 94aec08ea426903a3fb3cafd4d8b900cd50df702 |
|
18-Sep-2006 |
Brian Haley <brian.haley@hp.com> |
[NETFILTER]: Change tunables to __read_mostly
Change some netfilter tunables to __read_mostly. Also fixed some
incorrect file reference comments while I was in there.
(this will be my last __read_mostly patch unless someone points out
something else that needs it)
Signed-off-by: Brian Haley <brian.haley@hp.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 6ab3d5624e172c553004ecc862bfeac16d9d68b7 |
|
30-Jun-2006 |
Jörn Engel <joern@wohnheim.fh-wedel.de> |
Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
|
| 6442f1cf897643d4ca597f2f7d3464b765bae960 |
|
30-May-2006 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: conntrack: don't call helpers for related ICMP messages
None of the existing helpers expects to get called for related ICMP
packets and some even drop them if they can't parse them.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 32292a7ff1d9306841a8da6ea286847b1070cc6a |
|
06-Apr-2006 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: Fix section mismatch warnings
Fix section mismatch warnings caused by netfilter's init_or_cleanup
functions used in many places by splitting the init from the cleanup
parts.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 964ddaa10de8f3aeed12bc2a30726514ff309e64 |
|
06-Apr-2006 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: Clean up hook registration
Clean up hook registration by makeing use of the new mass registration and
unregistration helpers.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 65b4b4e81a5094d52cbe372b887b1779abe53f9b |
|
29-Mar-2006 |
Andrew Morton <akpm@osdl.org> |
[NETFILTER]: Rename init functions.
Every netfilter module uses `init' for its module_init() function and
`fini' or `cleanup' for its module_exit() function.
Problem is, this creates uninformative initcall_debug output and makes
ctags rather useless.
So go through and rename them all to $(filename)_init and
$(filename)_fini.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| b9f78f9fca626875af8adc0f7366a38b8e625a0e |
|
22-Mar-2006 |
Pablo Neira Ayuso <pablo@netfilter.org> |
[NETFILTER]: nf_conntrack: support for layer 3 protocol load on demand
x_tables matches and targets that require nf_conntrack_ipv[4|6] to work
don't have enough information to load on demand these modules. This
patch introduces the following changes to solve this issue:
o nf_ct_l3proto_try_module_get: try to load the layer 3 connection
tracker module and increases the refcount.
o nf_ct_l3proto_module put: drop the refcount of the module.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| dc808fe28db59fadf4ec32d53f62477fa28f3be8 |
|
21-Mar-2006 |
Harald Welte <laforge@netfilter.org> |
[NETFILTER] nf_conntrack: clean up to reduce size of 'struct nf_conn'
This patch moves all helper related data fields of 'struct nf_conn'
into a separate structure 'struct nf_conn_help'. This new structure
is only present in conntrack entries for which we actually have a
helper loaded.
Also, this patch cleans up the nf_conntrack 'features' mechanism to
resemble what the original idea was: Just glue the feature-specific
data structures at the end of 'struct nf_conn', and explicitly
re-calculate the pointer to it when needed rather than keeping
pointers around.
Saves 20 bytes per conntrack on my x86_64 box. A non-helped conntrack
is 276 bytes. We still need to save another 20 bytes in order to fit
into to target of 256bytes.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 46b86a2da0fd14bd49765330df63a62279833acb |
|
13-Jan-2006 |
Joe Perches <joe@perches.com> |
[NET]: Use NIP6_FMT in kernel.h
There are errors and inconsistency in the display of NIP6 strings.
ie: net/ipv6/ip6_flowlabel.c
There are errors and inconsistency in the display of NIPQUAD strings too.
ie: net/netfilter/nf_conntrack_ftp.c
This patch:
adds NIP6_FMT to kernel.h
changes all code to use NIP6_FMT
fixes net/ipv6/ip6_flowlabel.c
adds NIPQUAD_FMT to kernel.h
fixes net/netfilter/nf_conntrack_ftp.c
changes a few uses of "%u.%u.%u.%u" to NIPQUAD_FMT for symmetry to NIP6_FMT
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| 2e4e6a17af35be359cc8f1c924f8f198fbd478cc |
|
12-Jan-2006 |
Harald Welte <laforge@netfilter.org> |
[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| babbdb1a18d37e57acae7e348ef122f2b905df0a |
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10-Jan-2006 |
Patrick McHardy <kaber@trash.net> |
[NETFILTER]: Fix timeout sysctls on big-endian 64bit architectures
The connection tracking timeout variables are unsigned long, but
proc_dointvec_jiffies is used with sizeof(unsigned int) in the sysctl
tables. Since there is no proc_doulongvec_jiffies function, change the
timeout variables to unsigned int.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| c1d10adb4a521de5760112853f42aaeefcec96eb |
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05-Jan-2006 |
Pablo Neira Ayuso <pablo@netfilter.org> |
[NETFILTER]: Add ctnetlink port for nf_conntrack
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 7686a02c0ebc11e4f881fe14db3df18569b7dbc1 |
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15-Nov-2005 |
Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> |
[NETFILTER]: fix type of sysctl variables in nf_conntrack_ipv6
These variables should be unsigned. This fixes sysctl handler for
nf_ct_frag6_{low,high}_thresh.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1 |
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10-Nov-2005 |
Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> |
[NETFILTER]: Add nf_conntrack subsystem.
The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.
In fact nf_conntrack is capable of working with any layer 3
protocol.
The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:
1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages
2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6
3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design
4) ipv6 has no need for stateful NAT
The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
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