Commit Graph

280 Commits

Author SHA1 Message Date
David S. Miller 80c0bc9e37 xfrm: Kill XFRM_LOOKUP_WAIT flag.
This can be determined from the flow flags instead.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-01 14:36:37 -08:00
David S. Miller 9a7386ec99 xfrm: Const'ify sec_path arg to secpath_has_nontransport.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:47 -08:00
David S. Miller 22cccb7e03 xfrm: Const'ify ptr args to xfrm_policy_ok.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:46 -08:00
David S. Miller 7db454b912 xfrm: Const'ify ptr args to xfrm_state_ok.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:46 -08:00
David S. Miller 1786b3891c xfrm: Const'ify selector arg to xfrm_dst_update_parent.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:45 -08:00
David S. Miller d3e40a9f5e xfrm: Const'ify policy arg to clone_policy.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:44 -08:00
David S. Miller f299d557cb xfrm: Const'ify policy arg and local selector in xfrm_policy_match.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:43 -08:00
David S. Miller 0b597e7edf xfrm: Const'ify local xfrm_address_t pointers in xfrm_policy_lookup_bytype.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:43 -08:00
David S. Miller b4b7c0b389 xfrm: Const'ify selector args in xfrm_migrate paths.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:42 -08:00
David S. Miller 5f803b58cd xfrm: Const'ify address args to hash helpers.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:42 -08:00
David S. Miller dd701754e7 xfrm: Const'ify pointer args to migrate_tmpl_match and xfrm_migrate_check
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:40 -08:00
David S. Miller 6418c4e079 xfrm: Const'ify address arguments to __xfrm_dst_lookup()
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:39 -08:00
David S. Miller 200ce96e56 xfrm: Const'ify selector argument to xfrm_selector_match()
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:38 -08:00
David S. Miller dee9f4bceb net: Make flow cache paths use a const struct flowi.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:44:31 -08:00
David S. Miller 4ca2e68511 xfrm: Mark flowi arg to xfrm_resolve_and_create_bundle() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:38:51 -08:00
David S. Miller 3f0e18fb0e xfrm: Mark flowi arg to xfrm_dst_{alloc_copy,update_origin}() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:38:14 -08:00
David S. Miller 98313adaac xfrm: Mark flowi arg to xfrm_bundle_create() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:36:50 -08:00
David S. Miller a6c2e61115 xfrm: Mark flowi arg to xfrm_tmpl_resolve{,_one}() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:35:39 -08:00
David S. Miller 73ff93cd02 xfrm: Mark flowi arg to xfrm_expand_policies() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:33:42 -08:00
David S. Miller 062cdb43b8 xfrm: Mark flowi arg to xfrm_policy_{lookup_by_type,match}() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:31:08 -08:00
David S. Miller 47209abd79 xfrm: Kill strict arg to xfrm_bundle_ok().
Always set to "0".

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:29:20 -08:00
David S. Miller e1ad2ab2cf xfrm: Mark flowi arg to xfrm_selector_match() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 18:07:39 -08:00
David S. Miller 8f029de281 xfrm: Mark flowi arg to xfrm_type->reject() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 17:59:59 -08:00
David S. Miller 0c7b3eefb4 xfrm: Mark flowi arg to ->fill_dst() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 17:48:57 -08:00
David S. Miller 05d8402576 xfrm: Mark flowi arg to ->get_tos() const.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-22 17:47:10 -08:00
David S. Miller da935c66ba Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	Documentation/feature-removal-schedule.txt
	drivers/net/e1000e/netdev.c
	net/xfrm/xfrm_policy.c
2011-02-19 19:17:35 -08:00
David S. Miller 3c7bd1a140 net: Add initial_ref arg to dst_alloc().
This allows avoiding multiple writes to the initial __refcnt.

The most simplest cases of wanting an initial reference of "1"
in ipv4 and ipv6 have been converted, the rest have been left
along and kept at the existing "0".

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-17 15:44:00 -08:00
Hiroaki SHIMODA 0b15093219 xfrm: avoid possible oopse in xfrm_alloc_dst
Commit 80c802f307 (xfrm: cache bundles instead of policies for
outgoing flows) introduced possible oopse when dst_alloc returns NULL.

Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-10 23:08:33 -08:00
David S. Miller d33e455337 net: Abstract default MTU metric calculation behind an accessor.
Like RTAX_ADVMSS, make the default calculation go through a dst_ops
method rather than caching the computation in the routing cache
entries.

Now dst metrics are pretty much left as-is when new entries are
created, thus optimizing metric sharing becomes a real possibility.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-14 13:01:14 -08:00
David S. Miller 0dbaee3b37 net: Abstract default ADVMSS behind an accessor.
Make all RTAX_ADVMSS metric accesses go through a new helper function,
dst_metric_advmss().

Leave the actual default metric as "zero" in the real metric slot,
and compute the actual default value dynamically via a new dst_ops
AF specific callback.

For stacked IPSEC routes, we use the advmss of the path which
preserves existing behavior.

Unlike ipv4/ipv6, DecNET ties the advmss to the mtu and thus updates
advmss on pmtu updates.  This inconsistency in advmss handling
results in more raw metric accesses than I wish we ended up with.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-13 12:52:14 -08:00
David S. Miller defb3519a6 net: Abstract away all dst_entry metrics accesses.
Use helper functions to hide all direct accesses, especially writes,
to dst_entry metrics values.

This will allow us to:

1) More easily change how the metrics are stored.

2) Implement COW for metrics.

In particular this will help us put metrics into the inetpeer
cache if that is what we end up doing.  We can make the _metrics
member a pointer instead of an array, initially have it point
at the read-only metrics in the FIB, and then on the first set
grab an inetpeer entry and point the _metrics member there.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
2010-12-09 10:46:36 -08:00
stephen hemminger 1c4c40c42d xfrm: make xfrm_bundle_ok local
Only used in one place.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-21 03:09:46 -07:00
Thomas Egerer 8444cf712c xfrm: Allow different selector family in temporary state
The family parameter xfrm_state_find is used to find a state matching a
certain policy. This value is set to the template's family
(encap_family) right before xfrm_state_find is called.
The family parameter is however also used to construct a temporary state
in xfrm_state_find itself which is wrong for inter-family scenarios
because it produces a selector for the wrong family. Since this selector
is included in the xfrm_user_acquire structure, user space programs
misinterpret IPv6 addresses as IPv4 and vice versa.
This patch splits up the original init_tempsel function into a part that
initializes the selector respectively the props and id of the temporary
state, to allow for differing ip address families whithin the state.

Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-20 11:11:38 -07:00
David S. Miller 11fe883936 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/vhost/net.c
	net/bridge/br_device.c

Fix merge conflict in drivers/vhost/net.c with guidance from
Stephen Rothwell.

Revert the effects of net-2.6 commit 573201f36f
since net-next-2.6 has fixes that make bridge netpoll work properly thus
we don't need it disabled.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-20 18:25:24 -07:00
Timo Teräs d809ec8955 xfrm: do not assume that template resolving always returns xfrms
xfrm_resolve_and_create_bundle() assumed that, if policies indicated
presence of xfrms, bundle template resolution would always return
some xfrms. This is not true for 'use' level policies which can
result in no xfrm's being applied if there is no suitable xfrm states.
This fixes a crash by this incorrect assumption.

Reported-by: George Spelvin <linux@horizon.com>
Bisected-by: George Spelvin <linux@horizon.com>
Tested-by: George Spelvin <linux@horizon.com>
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-14 14:16:48 -07:00
David S. Miller 597e608a84 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-07-07 15:59:38 -07:00
Eric Dumazet 1823e4c80e snmp: add align parameter to snmp_mib_init()
In preparation for 64bit snmp counters for some mibs,
add an 'align' parameter to snmp_mib_init(), instead
of assuming mibs only contain 'unsigned long' fields.

Callers can use __alignof__(type) to provide correct
alignment.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
CC: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-25 21:33:17 -07:00
Timo Teräs b1312c89f0 xfrm: check bundle policy existance before dereferencing it
Fix the bundle validation code to not assume having a valid policy.
When we have multiple transformations for a xfrm policy, the bundle
instance will be a chain of bundles with only the first one having
the policy reference. When policy_genid is bumped it will expire the
first bundle in the chain which is equivalent of expiring the whole
chain.

Reported-bisected-and-tested-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-24 14:35:00 -07:00
Eric Dumazet fafeeb6c80 xfrm: force a dst reference in __xfrm_route_forward()
Packets going through __xfrm_route_forward() have a not refcounted dst
entry, since we enabled a noref forwarding path.

xfrm_lookup() might incorrectly release this dst entry.

It's a bit late to make invasive changes in xfrm_lookup(), so lets force
a refcount in this path.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-02 02:26:39 -07:00
Joe Perches 3fa21e07e6 net: Remove unnecessary returns from void function()s
This patch removes from net/ (but not any netfilter files)
all the unnecessary return; statements that precede the
last closing brace of void functions.

It does not remove the returns that are immediately
preceded by a label as gcc doesn't like that.

Done via:
$ grep -rP --include=*.[ch] -l "return;\n}" net/ | \
  xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }'

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-17 23:23:14 -07:00
Timo Teras a1aa348304 xfrm: fix policy unreferencing on larval drop
I mistakenly had the error path to use num_pols to decide how
many policies we need to drop (cruft from earlier patch set
version which did not handle socket policies right).

This is wrong since normally we do not keep explicit references
(instead we hold reference to the cache entry which holds references
to policies). drop_pols is set to num_pols if we are holding the
references, so use that. Otherwise we eventually BUG_ON inside
xfrm_policy_destroy due to premature policy deletion.

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-15 23:49:26 -07:00
Changli Gao 4b021628be xfrm: potential uninitialized variable num_xfrms
potential uninitialized variable num_xfrms

fix compiler warning: 'num_xfrms' may be used uninitialized in this function.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
----
 net/xfrm/xfrm_policy.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-30 16:40:05 -07:00
Timo Teräs 285ead175c xfrm: remove policy garbage collection
Policies are now properly reference counted and destroyed from
all code paths. The delayed gc is just an overhead now and can
be removed.

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-07 03:43:19 -07:00
Timo Teräs 80c802f307 xfrm: cache bundles instead of policies for outgoing flows
__xfrm_lookup() is called for each packet transmitted out of
system. The xfrm_find_bundle() does a linear search which can
kill system performance depending on how many bundles are
required per policy.

This modifies __xfrm_lookup() to store bundles directly in
the flow cache. If we did not get a hit, we just create a new
bundle instead of doing slow search. This means that we can now
get multiple xfrm_dst's for same flow (on per-cpu basis).

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-07 03:43:19 -07:00
Timo Teräs fe1a5f031e flow: virtualize flow cache entry methods
This allows to validate the cached object before returning it.
It also allows to destruct object properly, if the last reference
was held in flow cache. This is also a prepartion for caching
bundles in the flow cache.

In return for virtualizing the methods, we save on:
- not having to regenerate the whole flow cache on policy removal:
  each flow matching a killed policy gets refreshed as the getter
  function notices it smartly.
- we do not have to call flow_cache_flush from policy gc, since the
  flow cache now properly deletes the object if it had any references

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-07 03:43:18 -07:00
Timo Teräs ea2dea9dac xfrm: remove policy lock when accessing policy->walk.dead
All of the code considers ->dead as a hint that the cached policy
needs to get refreshed. The read side can just drop the read lock
without any side effects.

The write side needs to make sure that it's written only exactly
once. Only possible race is at xfrm_policy_kill(). This is fixed
by checking result of __xfrm_policy_unlink() when needed. It will
always succeed if the policy object is looked up from the hash
list (so some checks are removed), but it needs to be checked if
we are trying to unlink policy via a reference (appropriate
checks added).

Since policy->walk.dead is written exactly once, it no longer
needs to be protected with a write lock.

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 19:41:35 -07:00
Herbert Xu 87c1e12b5e ipsec: Fix bogus bundle flowi
When I merged the bundle creation code, I introduced a bogus
flowi value in the bundle.  Instead of getting from the caller,
it was instead set to the flow in the route object, which is
totally different.

The end result is that the bundles we created never match, and
we instead end up with an ever growing bundle list.

Thanks to Jamal for find this problem.

Reported-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-03 01:04:37 -08:00
Jamal Hadi Salim fb977e2ca6 xfrm: clone mark when cloning policy
When we clone the SP, we should also clone the mark.
Useful for socket based SPs.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-23 15:09:53 -08:00
Jamal Hadi Salim 34f8d8846f xfrm: SP lookups with mark
Allow mark to be used when doing SP lookup

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-22 16:21:25 -08:00
Jamal Hadi Salim 8ca2e93b55 xfrm: SP lookups signature with mark
pass mark to all SP lookups to prepare them for when we add code
to have them search.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-22 16:21:12 -08:00
Jamal Hadi Salim 2f1eb65f36 xfrm: Flushing empty SPD generates false events
To see the effect make sure you have an empty SPD.
On window1 "ip xfrm mon" and on window2 issue "ip xfrm policy flush"
You get prompt back in window2 and you see the flush event on window1.
With this fix, you still get prompt on window1 but no event on window2.

Thanks to Alexey Dobriyan for finding a bug in earlier version
when using pfkey to do the flushing.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-19 13:11:50 -08:00
jamal 72032fdbcd xfrm: Introduce LINUX_MIB_XFRMFWDHDRERROR
XFRMINHDRERROR counter is ambigous when validating forwarding
path. It makes it tricky to debug when you have both in and fwd
validation.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-18 15:43:09 -08:00
David S. Miller 069c474e88 xfrm: Revert false event eliding commits.
As reported by Alexey Dobriyan:

--------------------
setkey now takes several seconds to run this simple script
and it spits "recv: Resource temporarily unavailable" messages.

#!/usr/sbin/setkey -f
flush;
spdflush;

add A B ipcomp 44 -m tunnel -C deflate;
add B A ipcomp 45 -m tunnel -C deflate;

spdadd A B any -P in ipsec
        ipcomp/tunnel/192.168.1.2-192.168.1.3/use;
spdadd B A any -P out ipsec
        ipcomp/tunnel/192.168.1.3-192.168.1.2/use;
--------------------

Obviously applications want the events even when the table
is empty.  So we cannot make this behavioral change.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-17 13:41:40 -08:00
Tejun Heo 7d720c3e4f percpu: add __percpu sparse annotations to net
Add __percpu sparse annotations to net.

These annotations are to make sparse consider percpu variables to be
in a different address space and warn if accessed without going
through percpu accessors.  This patch doesn't affect normal builds.

The macro and type tricks around snmp stats make things a bit
interesting.  DEFINE/DECLARE_SNMP_STAT() macros mark the target field
as __percpu and SNMP_UPD_PO_STATS() macro is updated accordingly.  All
snmp_mib_*() users which used to cast the argument to (void **) are
updated to cast it to (void __percpu **).

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16 23:05:38 -08:00
jamal 0dca3a8436 xfrm: Flushing empty SPD generates false events
Observed similar behavior on SPD as previouly seen on SAD flushing..
This fixes it.

cheers,
jamal
commit 428b20432dc31bc2e01a94cd451cf5a2c00d2bf4
Author: Jamal Hadi Salim <hadi@cyberus.ca>
Date:   Thu Feb 11 05:49:38 2010 -0500

    xfrm: Flushing empty SPD generates false events

    To see the effect make sure you have an empty SPD.
    On window1 "ip xfrm mon" and on window2 issue "ip xfrm policy flush"
    You get prompt back in window1 and you see the flush event on window2.
    With this fix, you still get prompt on window1 but no event on window2.

    Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15 21:49:50 -08:00
Alexey Dobriyan d7c7544c3d netns xfrm: deal with dst entries in netns
GC is non-existent in netns, so after you hit GC threshold, no new
dst entries will be created until someone triggers cleanup in init_net.

Make xfrm4_dst_ops and xfrm6_dst_ops per-netns.
This is not done in a generic way, because it woule waste
(AF_MAX - 2) * sizeof(struct dst_ops) bytes per-netns.

Reorder GC threshold initialization so it'd be done before registering
XFRM policies.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-24 22:47:53 -08:00
Alexey Dobriyan e071041be0 netns xfrm: fix "ip xfrm state|policy count" misreport
"ip xfrm state|policy count" report SA/SP count from init_net,
not from netns of caller process.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-23 23:10:42 -08:00
Ralf Baechle 96c5340147 NET: XFRM: Fix spelling of neighbour.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 net/xfrm/xfrm_policy.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-26 20:24:46 -08:00
Eric Dumazet adf30907d6 net: skb->dst accessors
Define three accessors to get/set dst attached to a skb

struct dst_entry *skb_dst(const struct sk_buff *skb)

void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)

void skb_dst_drop(struct sk_buff *skb)
This one should replace occurrences of :
dst_release(skb->dst)
skb->dst = NULL;

Delete skb->dst field

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-03 02:51:04 -07:00
Wei Yongjun 29fa0b301b xfrm: Cleanup for unlink SPD entry
Used __xfrm_policy_unlink() to instead of the dup codes when unlink
SPD entry.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03 00:33:09 -08:00
David S. Miller 22d55328b7 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-12-03 00:29:24 -08:00
Wei Yongjun d5654efd3f xfrm: Fix kernel panic when flush and dump SPD entries
After flush the SPD entries, dump the SPD entries will cause kernel painc.

Used the following commands to reproduct:

- echo 'spdflush;' | setkey -c
- echo 'spdadd 3ffe:501:ffff:ff01::/64 3ffe:501:ffff:ff04::/64  any -P out ipsec \
  ah/tunnel/3ffe:501:ffff:ff00:200:ff:fe00:b0b0-3ffe:501:ffff:ff02:200:ff:fe00:a1a1/require;\
  spddump;' | setkey -c
- echo 'spdflush; spddump;' | setkey -c
- echo 'spdadd 3ffe:501:ffff:ff01::/64 3ffe:501:ffff:ff04::/64  any -P out ipsec \
  ah/tunnel/3ffe:501:ffff:ff00:200:ff:fe00:b0b0-3ffe:501:ffff:ff02:200:ff:fe00:a1a1/require;\
  spddump;' | setkey -c

This is because when flush the SPD entries, the SPD entry is not remove
from the list.

This patch fix the problem by remove the SPD entry from the list.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03 00:27:18 -08:00
Alexey Dobriyan b27aeadb59 netns xfrm: per-netns sysctls
Make
	net.core.xfrm_aevent_etime
	net.core.xfrm_acq_expires
	net.core.xfrm_aevent_rseqth
	net.core.xfrm_larval_drop

sysctls per-netns.

For that make net_core_path[] global, register it to prevent two
/proc/net/core antries and change initcall position -- xfrm_init() is called
from fs_initcall, so this one should be fs_initcall at least.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 18:00:48 -08:00
Alexey Dobriyan c68cd1a01b netns xfrm: /proc/net/xfrm_stat in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 18:00:14 -08:00
Alexey Dobriyan 59c9940ed0 netns xfrm: per-netns MIBs
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:59:52 -08:00
Alexey Dobriyan 7c2776ee21 netns xfrm: flush SA/SPDs on netns stop
SA/SPD doesn't pin netns (and it shouldn't), so get rid of them by hand.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:57:44 -08:00
Alexey Dobriyan fbda33b2b8 netns xfrm: ->get_saddr in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:56:49 -08:00
Alexey Dobriyan c5b3cf46ea netns xfrm: ->dst_lookup in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:51:25 -08:00
Alexey Dobriyan ddcfd79680 netns xfrm: dst garbage-collecting in netns
Pass netns pointer to struct xfrm_policy_afinfo::garbage_collect()

	[This needs more thoughts on what to do with dst_ops]
	[Currently stub to init_net]

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:37:23 -08:00
Alexey Dobriyan 3dd0b4997a netns xfrm: flushing/pruning bundles in netns
Allow netdevice notifier as result.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:36:51 -08:00
Alexey Dobriyan 99a66657b2 netns xfrm: xfrm_route_forward() in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:36:13 -08:00
Alexey Dobriyan f6e1e25d70 netns xfrm: xfrm_policy_check in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:35:44 -08:00
Alexey Dobriyan 52479b623d netns xfrm: lookup in netns
Pass netns to xfrm_lookup()/__xfrm_lookup(). For that pass netns
to flow_cache_lookup() and resolver callback.

Take it from socket or netdevice. Stub DECnet to init_net.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:35:18 -08:00
Alexey Dobriyan cdcbca7c1f netns xfrm: policy walking in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:34:49 -08:00
Alexey Dobriyan 8d1211a6aa netns xfrm: finding policy in netns
Add netns parameter to xfrm_policy_bysel_ctx(), xfrm_policy_byidx().

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:34:20 -08:00
Alexey Dobriyan 33ffbbd52c netns xfrm: policy flushing in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:33:32 -08:00
Alexey Dobriyan 1121994c80 netns xfrm: policy insertion in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:33:06 -08:00
Alexey Dobriyan e92303f872 netns xfrm: propagate netns into policy byidx hash
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:32:41 -08:00
Alexey Dobriyan 98806f75ba netns xfrm: trivial netns propagations
Take netns from xfrm_state or xfrm_policy.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:29:47 -08:00
Alexey Dobriyan 66caf628c3 netns xfrm: per-netns policy hash resizing work
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:28:57 -08:00
Alexey Dobriyan dc2caba7b3 netns xfrm: per-netns policy counts
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:24:15 -08:00
Alexey Dobriyan a35f6c5de3 netns xfrm: per-netns xfrm_policy_bydst hash
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:23:48 -08:00
Alexey Dobriyan 8b18f8eaf9 netns xfrm: per-netns inexact policies
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:23:26 -08:00
Alexey Dobriyan 8100bea7d6 netns xfrm: per-netns xfrm_policy_byidx hashmask
Per-netns hashes are independently resizeable.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:22:58 -08:00
Alexey Dobriyan 93b851c1c9 netns xfrm: per-netns xfrm_policy_byidx hash
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:22:35 -08:00
Alexey Dobriyan adfcf0b27e netns xfrm: per-netns policy list
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:22:11 -08:00
Alexey Dobriyan 0331b1f383 netns xfrm: add struct xfrm_policy::xp_net
Again, to avoid complications with passing netns when not necessary.
Again, ->xp_net is set-once field, once set it never changes.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:21:45 -08:00
Alexey Dobriyan 50a30657fd netns xfrm: per-netns km_waitq
Disallow spurious wakeups in __xfrm_lookup().

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:21:01 -08:00
Alexey Dobriyan d62ddc21b6 netns xfrm: add netns boilerplate
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:14:31 -08:00
Alexey Dobriyan c95839693d xfrm: initialise xfrm_policy_gc_work statically
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 17:13:59 -08:00
Arnaud Ebalard 7a12122c7a net: Remove unused parameter of xfrm_gen_index()
In commit 2518c7c2b3 ("[XFRM]: Hash
policies when non-prefixed."), the last use of xfrm_gen_policy() first
argument was removed, but the argument was left behind in the
prototype.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-12 23:28:15 -08:00
David S. Miller 9eeda9abd1 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/ath5k/base.c
	net/8021q/vlan_core.c
2008-11-06 22:43:03 -08:00
Alexey Dobriyan bbb770e7ab xfrm: Fix xfrm_policy_gc_lock handling.
From: Alexey Dobriyan <adobriyan@gmail.com>

Based upon a lockdep trace by Simon Arlott.

xfrm_policy_kill() can be called from both BH and
non-BH contexts, so we have to grab xfrm_policy_gc_lock
with BH disabling.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-03 19:11:29 -08:00
Harvey Harrison 21454aaad3 net: replace NIPQUAD() in net/*/
Using NIPQUAD() with NIPQUAD_FMT, %d.%d.%d.%d or %u.%u.%u.%u
can be replaced with %pI4

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-31 00:54:56 -07:00
Alexey Dobriyan d5917a35ac xfrm: C99 for xfrm_dev_notifier
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-31 00:41:59 -07:00
David S. Miller a1744d3bee Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/p54/p54common.c
2008-10-31 00:17:34 -07:00
fernando@oss.ntt.co a432226614 xfrm: do not leak ESRCH to user space
I noticed that, under certain conditions, ESRCH can be leaked from the
xfrm layer to user space through sys_connect. In particular, this seems
to happen reliably when the kernel fails to resolve a template either
because the AF_KEY receive buffer being used by racoon is full or
because the SA entry we are trying to use is in XFRM_STATE_EXPIRED
state.

However, since this could be a transient issue it could be argued that
EAGAIN would be more appropriate. Besides this error code is not even
documented in the man page for sys_connect (as of man-pages 3.07).

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-31 00:06:03 -07:00
Harvey Harrison 5b095d9892 net: replace %p6 with %pI6
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29 12:52:50 -07:00
Harvey Harrison fdb46ee752 net, misc: 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>
2008-10-28 23:02:32 -07:00
Arnaud Ebalard 13c1d18931 xfrm: MIGRATE enhancements (draft-ebalard-mext-pfkey-enhanced-migrate)
Provides implementation of the enhancements of XFRM/PF_KEY MIGRATE mechanism
specified in draft-ebalard-mext-pfkey-enhanced-migrate-00. Defines associated
PF_KEY SADB_X_EXT_KMADDRESS extension and XFRM/netlink XFRMA_KMADDRESS
attribute.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-05 13:33:42 -07:00