Commit Graph

335 Commits

Author SHA1 Message Date
Denis Vlasenko
b1a7ffcb7a [IPV6]: Deinline few large functions in inet6 code
Deinline a few functions which produce 200+ bytes of code.

Size  Uses Wasted Name and definition
===== ==== ====== ================================================
  429    3    818 __inet6_lookup        include/net/inet6_hashtables.h
  404    2    384 __inet6_lookup_established    include/net/inet6_hashtables.h
  206    3    372 __inet6_hash  include/net/inet6_hashtables.h

Signed-off-by: Denis Vlasenko <vda@ilport.com.ua>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09 22:48:59 -07:00
Brian Haley
503e4faad1 [NETFILTER]: Fix build with CONFIG_NETFILTER=y/m on IA64
Can't build with CONFIG_NETFILTER=y/m on IA64, there's a missing
#include in net/ipv6/netfilter.c

net/ipv6/netfilter.c: In function `nf_ip6_checksum':
net/ipv6/netfilter.c:92: warning: implicit declaration of function
`csum_ipv6_magic'

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09 22:25:49 -07:00
Patrick McHardy
96f6bf82ea [NETFILTER]: Convert conntrack/ipt_REJECT to new checksumming functions
Besides removing lots of duplicate code, all converted users benefit
from improved HW checksum error handling. Tested with and without HW
checksums in almost all combinations.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09 22:25:42 -07:00
Patrick McHardy
422c346fad [NETFILTER]: Add address family specific checksum helpers
Add checksum operation which takes care of verifying the checksum and
dealing with HW checksum errors and avoids multiple checksum
operations by setting ip_summed to CHECKSUM_UNNECESSARY after
successful verification.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09 22:25:41 -07:00
Patrick McHardy
bce8032ef3 [NETFILTER]: Introduce infrastructure for address family specific operations
Change the queue rerouter intrastructure to a generic usable
infrastructure for address family specific operations as a base for
some cleanups.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09 22:25:40 -07:00
Patrick McHardy
32292a7ff1 [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>
2006-04-09 22:25:34 -07:00
Patrick McHardy
964ddaa10d [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>
2006-04-09 22:25:33 -07:00
Herbert Xu
45af08be6d [INET]: Use port unreachable instead of proto for tunnels
This patch changes GRE and SIT to generate port unreachable instead of
protocol unreachable errors when we can't find a matching tunnel for a
packet.

This removes the ambiguity as to whether the error is caused by no
tunnel being found or by the lack of support for the given tunnel
type.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09 22:25:29 -07:00
Herbert Xu
50fba2aa7c [INET]: Move no-tunnel ICMP error to tunnel4/tunnel6
This patch moves the sending of ICMP messages when there are no IPv4/IPv6
tunnels present to tunnel4/tunnel6 respectively.  Please note that for now
if xfrm4_tunnel/xfrm6_tunnel is loaded then no ICMP messages will ever be
sent.  This is similar to how we handle AH/ESP/IPCOMP.

This move fixes the bug where we always send an ICMP message when there is
no ip6_tunnel device present for a given packet even if it is later handled
by IPsec.  It also causes ICMP messages to be sent when no IPIP tunnel is
present.

I've decided to use the "port unreachable" ICMP message over the current
value of "address unreachable" (and "protocol unreachable" by GRE) because
it is not ambiguous unlike the other ones which can be triggered by other
conditions.  There seems to be no standard specifying what value must be
used so this change should be OK.  In fact we should change GRE to use
this value as well.

Incidentally, this patch also fixes a fairly serious bug in xfrm6_tunnel
where we don't check whether the embedded IPv6 header is present before
dereferencing it for the inside source address.

This patch is inspired by a previous patch by Hugo Santos <hsantos@av.it.pt>.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09 22:25:25 -07:00
Yasuyuki Kozakai
a89ecb6a2e [NETFILTER]: x_tables: unify IPv4/IPv6 multiport match
This unifies ipt_multiport and ip6t_multiport to xt_multiport.
As a result, this addes support for inversion and port range match
to IPv6 packets.

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>
2006-04-01 02:22:54 -08:00
Yasuyuki Kozakai
dc5ab2faec [NETFILTER]: x_tables: unify IPv4/IPv6 esp match
This unifies ipt_esp and ip6t_esp to xt_esp. Please note that now
a user program needs to specify IPPROTO_ESP as protocol to use esp match
with IPv6. This means that ip6tables requires '-p esp' like iptables.

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>
2006-04-01 02:22:30 -08:00
Herbert Xu
dbe5b4aaaf [IPSEC]: Kill unused decap state structure
This patch removes the *_decap_state structures which were previously
used to share state between input/post_input.  This is no longer
needed.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-01 00:54:16 -08:00
Herbert Xu
e695633e21 [IPSEC]: Kill unused decap state argument
This patch removes the decap_state argument from the xfrm input hook.
Previously this function allowed the input hook to share state with
the post_input hook.  The latter has since been removed.

The only purpose for it now is to check the encap type.  However, it
is easier and better to move the encap type check to the generic
xfrm_rcv function.  This allows us to get rid of the decap state
argument altogether.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-01 00:52:46 -08:00
Andrew Morton
65b4b4e81a [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>
2006-03-28 17:02:48 -08:00
Herbert Xu
d2acc3479c [INET]: Introduce tunnel4/tunnel6
Basically this patch moves the generic tunnel protocol stuff out of
xfrm4_tunnel/xfrm6_tunnel and moves it into the new files of tunnel4.c
and tunnel6 respectively.

The reason for this is that the problem that Hugo uncovered is only
the tip of the iceberg.  The real problem is that when we removed the
dependency of ipip on xfrm4_tunnel we didn't really consider the module
case at all.

For instance, as it is it's possible to build both ipip and xfrm4_tunnel
as modules and if the latter is loaded then ipip simply won't load.

After considering the alternatives I've decided that the best way out of
this is to restore the dependency of ipip on the non-xfrm-specific part
of xfrm4_tunnel.  This is acceptable IMHO because the intention of the
removal was really to be able to use ipip without the xfrm subsystem.
This is still preserved by this patch.

So now both ipip/xfrm4_tunnel depend on the new tunnel4.c which handles
the arbitration between the two.  The order of processing is determined
by a simple integer which ensures that ipip gets processed before
xfrm4_tunnel.

The situation for ICMP handling is a little bit more complicated since
we may not have enough information to determine who it's for.  It's not
a big deal at the moment since the xfrm ICMP handlers are basically
no-ops.  In future we can deal with this when we look at ICMP caching
in general.

The user-visible change to this is the removal of the TUNNEL Kconfig
prompts.  This makes sense because it can only be used through IPCOMP
as it stands.

The addition of the new modules shouldn't introduce any problems since
module dependency will cause them to be loaded.

Oh and I also turned some unnecessary pskb's in IPv6 related to this
patch to skb's.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-28 17:02:46 -08:00
Linus Torvalds
fdccffc6b7 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [NET]: drop duplicate assignment in request_sock
  [IPSEC]: Fix tunnel error handling in ipcomp6
2006-03-27 08:47:29 -08:00
Alan Stern
e041c68341 [PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe.  There is no
protection against entries being added to or removed from a chain while the
chain is in use.  The issues were discussed in this thread:

    http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2

We noticed that notifier chains in the kernel fall into two basic usage
classes:

	"Blocking" chains are always called from a process context
	and the callout routines are allowed to sleep;

	"Atomic" chains can be called from an atomic context and
	the callout routines are not allowed to sleep.

We decided to codify this distinction and make it part of the API.  Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name).  New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain.  The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.

With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed.  For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections.  (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)

There are some limitations, which should not be too hard to live with.  For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem.  Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain.  (This did happen in a couple of places and the code
had to be changed to avoid it.)

Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization.  Instead we use RCU.  The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.

Here is the list of chains that we adjusted and their classifications.  None
of them use the raw API, so for the moment it is only a placeholder.

  ATOMIC CHAINS
  -------------
arch/i386/kernel/traps.c:		i386die_chain
arch/ia64/kernel/traps.c:		ia64die_chain
arch/powerpc/kernel/traps.c:		powerpc_die_chain
arch/sparc64/kernel/traps.c:		sparc64die_chain
arch/x86_64/kernel/traps.c:		die_chain
drivers/char/ipmi/ipmi_si_intf.c:	xaction_notifier_list
kernel/panic.c:				panic_notifier_list
kernel/profile.c:			task_free_notifier
net/bluetooth/hci_core.c:		hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c:	ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c:	ip_conntrack_expect_chain
net/ipv6/addrconf.c:			inet6addr_chain
net/netfilter/nf_conntrack_core.c:	nf_conntrack_chain
net/netfilter/nf_conntrack_core.c:	nf_conntrack_expect_chain
net/netlink/af_netlink.c:		netlink_chain

  BLOCKING CHAINS
  ---------------
arch/powerpc/platforms/pseries/reconfig.c:	pSeries_reconfig_chain
arch/s390/kernel/process.c:		idle_chain
arch/x86_64/kernel/process.c		idle_notifier
drivers/base/memory.c:			memory_chain
drivers/cpufreq/cpufreq.c		cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c		cpufreq_transition_notifier_list
drivers/macintosh/adb.c:		adb_client_list
drivers/macintosh/via-pmu.c		sleep_notifier_list
drivers/macintosh/via-pmu68k.c		sleep_notifier_list
drivers/macintosh/windfarm_core.c	wf_client_list
drivers/usb/core/notify.c		usb_notifier_list
drivers/video/fbmem.c			fb_notifier_list
kernel/cpu.c				cpu_chain
kernel/module.c				module_notify_list
kernel/profile.c			munmap_notifier
kernel/profile.c			task_exit_notifier
kernel/sys.c				reboot_notifier_list
net/core/dev.c				netdev_chain
net/decnet/dn_dev.c:			dnaddr_chain
net/ipv4/devinet.c:			inetaddr_chain

It's possible that some of these classifications are wrong.  If they are,
please let us know or submit a patch to fix them.  Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)

The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.

[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 08:44:50 -08:00
Herbert Xu
6abaaaae6d [IPSEC]: Fix tunnel error handling in ipcomp6
The error handling in ipcomp6_tunnel_create is broken in two ways:

1) If we fail to allocate an SPI (this should never happen in practice
since there are plenty of 32-bit SPI values for us to use), we will
still go ahead and create the SA.

2) When xfrm_init_state fails, we first of all may trigger the BUG_TRAP
in __xfrm_state_destroy because we didn't set the state to DEAD.  More
importantly we end up returning the freed state as if we succeeded!

This patch fixes them both.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-26 17:37:54 -08:00
Patrick McHardy
b30bd282cb [IPV6]: ip6_xmit: remove unnecessary NULL ptr check
The sk argument to ip6_xmit is never NULL nowadays since the skb->priority
assigment expects a valid socket.

Coverity #354

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-23 01:17:25 -08:00
Pablo Neira Ayuso
b9f78f9fca [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>
2006-03-22 13:56:08 -08:00
Pablo Neira Ayuso
a45049c51c [NETFILTER]: x_tables: set the protocol family in x_tables targets/matches
Set the family field in xt_[matches|targets] registered.

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>
2006-03-22 13:55:40 -08:00
Patrick McHardy
443da0d527 [NETFILTER]: Fix ip6tables breakage from {get,set}sockopt compat layer
do_ipv6_getsockopt returns -EINVAL for unknown options, not
-ENOPROTOOPT as do_ipv6_setsockopt.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-22 13:53:20 -08:00
Ingo Oeser
322f74a432 [IPV6]: Cleanups for net/ipv6/addrconf.c (kzalloc, early exit) v2
Here are some possible (and trivial) cleanups.
- use kzalloc() where possible
- invert allocation failure test like
  if (object) {
        /* Rest of function here */
  }
  to

  if (object == NULL)
        return NULL;

  /* Rest of function here */

Signed-off-by: Ingo Oeser <ioe-lkml@rameria.de>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 23:01:47 -08:00
Ingo Oeser
0c600eda4b [IPV6]: Nearly complete kzalloc cleanup for net/ipv6
Stupidly use kzalloc() instead of kmalloc()/memset()
everywhere where this is possible in net/ipv6/*.c .

Signed-off-by: Ingo Oeser <ioe-lkml@rameria.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 23:01:32 -08:00
Ingo Oeser
78c784c47a [IPV6]: Cleanup of net/ipv6/reassambly.c
Two minor cleanups:

1. Using kzalloc() in fraq_alloc_queue()
   saves the memset() in ipv6_frag_create().

2. Invert sense of if-statements to streamline code.
   Inverts the comment, too.

Signed-off-by: Ingo Oeser <ioe-lkml@rameria.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 23:01:17 -08:00
Arnaldo Carvalho de Melo
543d9cfeec [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset
No code changes, just tidying up, in some cases moving EXPORT_SYMBOLs
to just after the function exported, etc.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:48:35 -08:00
Dmitry Mishin
3fdadf7d27 [NET]: {get|set}sockopt compatibility layer
This patch extends {get|set}sockopt compatibility layer in order to
move protocol specific parts to their place and avoid huge universal
net/compat.c file in the future.

Signed-off-by: Dmitry Mishin <dim@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:45:21 -08:00
Dave Jones
c750360938 [IPV6]: remove useless test in ip6_append_data
We've already dereferenced 'np' a dozen
times at this point, so it's safe to say it's not null.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:44:52 -08:00
Ingo Molnar
57b47a53ec [NET]: sem2mutex part 2
Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:35:41 -08:00
Arjan van de Ven
4a3e2f711a [NET] sem2mutex: net/
Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:33:17 -08:00
Arnaldo Carvalho de Melo
c4d9390941 [ICSK]: Introduce inet_csk_ctl_sock_create
Consolidating open coded sequences in tcp and dccp, v4 and v6.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:01:03 -08:00
David S. Miller
d76e60a5b5 [IPV6]: Fix some code/comment formatting in ip6_dst_output().
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 21:35:50 -08:00
Jamal Hadi Salim
9500e8a81f [IPSEC]: Sync series - fast path
Fast path sequence updates that will generate ipsec async
events

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 19:15:29 -08:00
Patrick McHardy
c4b8851392 [NETFILTER]: x_tables: replace IPv4/IPv6 policy match by address family independant version
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:03:40 -08:00
Patrick McHardy
f2ffd9eeda [NETFILTER]: Move ip6_masked_addrcmp to include/net/ipv6.h
Replace netfilter's ip6_masked_addrcmp by a more efficient version
in include/net/ipv6.h to make it usable without module dependencies.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:03:16 -08:00
Patrick McHardy
c498673474 [NETFILTER]: x_tables: add xt_{match,target} arguments to match/target functions
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:02:56 -08:00
Patrick McHardy
1c524830d0 [NETFILTER]: x_tables: pass registered match/target data to match/target functions
This allows to make decisions based on the revision (and address family
with a follow-up patch) at runtime.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:02:15 -08:00
Patrick McHardy
7f9397138e [NETFILTER]: Convert ip6_tables matches/targets to centralized error checking
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:01:43 -08:00
Patrick McHardy
3cdc7c953e [NETFILTER]: Change {ip,ip6,arp}_tables to use centralized error checking
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:00:36 -08:00
Yasuyuki Kozakai
6ea46c9c12 [NETFILTER]: nf_conntrack: use ipv6_addr_equal in nf_ct_reasm
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>
2006-03-20 17:58:44 -08:00
Harald Welte
dc808fe28d [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>
2006-03-20 17:56:32 -08:00
John Heffner
5d424d5a67 [TCP]: MTU probing
Implementation of packetization layer path mtu discovery for TCP, based on
the internet-draft currently found at
<http://www.ietf.org/internet-drafts/draft-ietf-pmtud-method-05.txt>.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:53:41 -08:00
Jesper Juhl
2b191befe2 [IPCOMP6]: don't check vfree() argument for NULL.
vfree does it's own NULL checking, so checking a pointer before
handing it to vfree is pointless.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:46:29 -08:00
YOSHIFUJI Hideaki
e843b9e1be [IPV6]: ROUTE: Ensure to accept redirects from nexthop for the target.
It is possible to get redirects from nexthop of "more-specific"
routes.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:07:49 -08:00
YOSHIFUJI Hideaki
09c884d4c3 [IPV6]: ROUTE: Add accept_ra_rt_info_max_plen sysctl.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:07:03 -08:00
YOSHIFUJI Hideaki
e317da9622 [IPV6]: ROUTE: Flag RTF_DEFAULT for Route Infomation for ::/0.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:42 -08:00
YOSHIFUJI Hideaki
70ceb4f539 [IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:24 -08:00
YOSHIFUJI Hideaki
52e1635631 [IPV6]: ROUTE: Add router_probe_interval sysctl.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:05:47 -08:00
YOSHIFUJI Hideaki
930d6ff2e2 [IPV6]: ROUTE: Add accept_ra_rtr_pref sysctl.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:05:30 -08:00
YOSHIFUJI Hideaki
270972554c [IPV6]: ROUTE: Add Router Reachability Probing (RFC4191).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:05:13 -08:00