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Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This makes that ip6_route_net_init() does all of the route init code.
There used to be a race between ip6_route_net_init() and ip6_net_init()
and someone relying on the combined result was left out cold.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ip6_route_net_init() error handling looked less than solid, fix 'er up.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/ath9k/core.c
drivers/net/wireless/ath9k/main.c
net/core/dev.c
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ip6_dst_blackhole_ops.kmem_cachep is not expected to be NULL (i.e. to
be initialized) when dst_alloc() is called from ip6_dst_blackhole().
Otherwise, it results in the following (xfrm_larval_drop is now set to
1 by default):
[ 78.697642] Unable to handle kernel paging request for data at address 0x0000004c
[ 78.703449] Faulting instruction address: 0xc0097f54
[ 78.786896] Oops: Kernel access of bad area, sig: 11 [#1]
[ 78.792791] PowerMac
[ 78.798383] Modules linked in: btusb usbhid bluetooth b43 mac80211 cfg80211 ehci_hcd ohci_hcd sungem sungem_phy usbcore ssb
[ 78.804263] NIP: c0097f54 LR: c0334a28 CTR: c002d430
[ 78.809997] REGS: eef19ad0 TRAP: 0300 Not tainted (2.6.27-rc5)
[ 78.815743] MSR: 00001032 <ME,IR,DR> CR: 22242482 XER: 20000000
[ 78.821550] DAR: 0000004c, DSISR: 40000000
[ 78.827278] TASK = eef0df40[3035] 'mip6d' THREAD: eef18000
[ 78.827408] GPR00: 00001032 eef19b80 eef0df40 00000000 00008020 eef19c30 00000001 00000000
[ 78.833249] GPR08: eee5101c c05a5c10 ef9ad500 00000000 24242422 1005787c 00000000 1004f960
[ 78.839151] GPR16: 00000000 10024e90 10050040 48030018 0fe44150 00000000 00000000 eef19c30
[ 78.845046] GPR24: eef19e44 00000000 eef19bf8 efb37c14 eef19bf8 00008020 00009032 c0596064
[ 78.856671] NIP [c0097f54] kmem_cache_alloc+0x20/0x94
[ 78.862581] LR [c0334a28] dst_alloc+0x40/0xc4
[ 78.868451] Call Trace:
[ 78.874252] [eef19b80] [c03c1810] ip6_dst_lookup_tail+0x1c8/0x1dc (unreliable)
[ 78.880222] [eef19ba0] [c0334a28] dst_alloc+0x40/0xc4
[ 78.886164] [eef19bb0] [c03cd698] ip6_dst_blackhole+0x28/0x1cc
[ 78.892090] [eef19be0] [c03d9be8] rawv6_sendmsg+0x75c/0xc88
[ 78.897999] [eef19cb0] [c038bca4] inet_sendmsg+0x4c/0x78
[ 78.903907] [eef19cd0] [c03207c8] sock_sendmsg+0xac/0xe4
[ 78.909734] [eef19db0] [c03209e4] sys_sendmsg+0x1e4/0x2a0
[ 78.915540] [eef19f00] [c03220a8] sys_socketcall+0xfc/0x210
[ 78.921406] [eef19f40] [c0014b3c] ret_from_syscall+0x0/0x38
[ 78.927295] --- Exception: c01 at 0xfe2d730
[ 78.927297] LR = 0xfe2d71c
[ 78.939019] Instruction dump:
[ 78.944835] 91640018 9144001c 900a0000 4bffff44 9421ffe0 7c0802a6 bf810010 7c9d2378
[ 78.950694] 90010024 7fc000a6 57c0045e 7c000124 <83e3004c> 8383005c 2f9f0000 419e0050
[ 78.956464] ---[ end trace 05fa1ed7972487a1 ]---
As commented by Benjamin Thery, the bug was introduced by
f2fc6a54585a1be6669613a31fbaba2ecbadcd36, while adding network
namespaces support to ipv6 routes.
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Johannes Berg reported that occaisionally, bringing an interface
down or unregistering it would hang for up to 30 seconds. Using
debugging output he provided it became clear that ICMP6 routes
were the culprit.
The problem is that ICMP6 routes live in their own world totally
separate from normal ipv6 routes. So there are all kinds of special
cases throughout the ipv6 code to handle this.
While we should really try to unify all of this stuff somehow,
for the time being let's fix this by purging the ICMP6 routes
that match the device in question during rt6_ifdown().
Signed-off-by: David S. Miller <davem@davemloft.net>
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ipv6_dev_get_saddr()
ipv6_dev_get_saddr() blindly de-references dst_dev to get the network
namespace, but some callers might pass NULL. Change callers to pass a
namespace pointer instead.
Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ip6_route_output, rt6_fill_node+0x175
Alexey Dobriyan wrote:
> On Thu, Aug 07, 2008 at 07:00:56PM +0200, John Gumb wrote:
>> Scenario: no ipv6 default route set.
>
>> # ip -f inet6 route get fec0::1
>>
>> BUG: unable to handle kernel NULL pointer dereference at 00000000
>> IP: [<c0369b85>] rt6_fill_node+0x175/0x3b0
>> EIP is at rt6_fill_node+0x175/0x3b0
>
> 0xffffffff80424dd3 is in rt6_fill_node (net/ipv6/route.c:2191).
> 2186 } else
> 2187 #endif
> 2188 NLA_PUT_U32(skb, RTA_IIF, iif);
> 2189 } else if (dst) {
> 2190 struct in6_addr saddr_buf;
> 2191 ====> if (ipv6_dev_get_saddr(ip6_dst_idev(&rt->u.dst)->dev,
> ^^^^^^^^^^^^^^^^^^^^^^^^
> NULL
>
> 2192 dst, 0, &saddr_buf) == 0)
> 2193 NLA_PUT(skb, RTA_PREFSRC, 16, &saddr_buf);
> 2194 }
The commit that changed this can't be reverted easily, but the patch
below works for me.
Fix NULL de-reference in rt6_fill_node() when there's no IPv6 input
device present in the dst entry.
Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch replaces dst_metric() with dst_mtu() in net/ipv6/route.c.
Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Change icmp6_dst_gc to return the one value the caller cares about rather
than using call by reference.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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They are symmetrical to single_open ones :)
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are already 7 of them - time to kill some duplicate code.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Outgoing interface is selected by the route decision if unspecified.
Let's prefer routes via interface(s) with the address assigned if we
have multiple routes with same cost.
With help from Naohiro Ooiwa <nooiwa@miraclelinux.com>.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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Handle interface property strictly when looking up a route
for the loopback address (RFC4291 2.5.3).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl4965-base.c
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The commit 77d16f450ae0452d7d4b009f78debb1294fb435c ("[IPV6] ROUTE:
Unify RT6_F_xxx and RT6_SELECT_F_xxx flags") intended to pass various
routing lookup hints around RT6_LOOKUP_F_xxx flags, but conversion was
missing for rt6_device_match().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/smc911x.c
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This patch removes CVS keywords that weren't updated for a long time
from comments.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1) We may have route lifetime larger than INT_MAX.
In that case we had wired value in lifetime.
Use INT_MAX if lifetime does not fit in s32.
2) Lifetime is valid iif RTF_EXPIRES is set.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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- Allow longer lifetimes (>= 0x7fffffff/HZ) on 64bit archs
by using unsigned long.
- Shadow this arithmetic overflow workaround by introducing
helper functions: addrconf_timeout_fixup() and
addrconf_finite_timeout().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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Because the IPsec output function xfrm_output_resume does its
own dst_output call it should always call __ip_local_output
instead of ip_local_output as the latter may invoke dst_output
directly. Otherwise the return values from nf_hook and dst_output
may clash as they both use the value 1 but for different purposes.
When that clash occurs this can cause a packet to be used after
it has been freed which usually leads to a crash. Because the
offending value is only returned from dst_output with qdiscs
such as HTB, this bug is normally not visible.
Thanks to Marco Berizzi for his perseverance in tracking this
down.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We need to handle infinite prefix lifetime specially.
With help from original reporter "Bonitch, Joseph"
<Joseph.Bonitch@xerox.com>.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We could not see appropriate lifetime if the route had been scheduled
to expired at 0 (in jiffies). We should check rt6i_flags instead of
rt6i_expires to determine whether lifetime is valid or not.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Because of arithmetic overflow avoidance, the actual lifetime setting
(vs the value given by RA) did not increase monotonically around
0x7fffffff/HZ.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are functions to refer to the value of dst->metric[THE_METRIC-1]
directly without use of a inline function "dst_metric" defined in
net/dst.h.
The following patch changes them to use the inline function
consistently.
Signed-off-by: Satoru SATOH <satoru.satoh@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ip6_route_net_init() performs some unneeded actions.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch makes the needlessly global struct
ip6_prohibit_entry_template static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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- net/ipv6/addrconf.c:
ipv6_get_ifaddr(), ipv6_dev_get_saddr()
- net/ipv6/mcast.c:
ipv6_sock_mc_join(), ipv6_sock_mc_drop(),
inet6_mc_check(),
ipv6_dev_mc_inc(), __ipv6_dev_mc_dec(), ipv6_dev_mc_dec(),
ipv6_chk_mcast_addr()
- net/ipv6/route.c:
rt6_lookup(), icmp6_dst_alloc()
- net/ipv6/ip6_output.c:
ip6_nd_hdr()
- net/ipv6/ndisc.c:
ndisc_send_ns(), ndisc_send_rs(), ndisc_send_redirect(),
ndisc_get_neigh(), __ndisc_send()
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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git://git.linux-ipv6.org/gitroot/yoshfuji/linux-2.6-dev
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Based on ancient patch by Mickael Hoerdt
<hoerdt@clarinet.u-strasbg.fr>, which is available at
<http://www-r2.u-strasbg.fr/~hoerdt/dev/linux_ipv6_mforwarding/patch-linux-ipv6-mforwarding-0.1a>.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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This patch updates the Linux the Intra-Site Automatic Tunnel Addressing
Protocol (ISATAP) implementation. It places the ISATAP potential router
list (PRL) in the kernel and adds three new private ioctls for PRL
management.
[Add several changes of structure name, constant names etc. - yoshfuji]
Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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The commits f3db4851 ([NETNS][IPV6] ip6_fib - fib6_clean_all handle several
network namespaces) and 69ddb805 ([NETNS][IPV6] route6 - Make proc entry
/proc/net/rt6_stats per namespace) made some proc files per net.
Both of them introduced potential OOPS - get_proc_net can return NULL, but
this check is lost - and a struct net leak - in case single_open() fails the
previously got net is not put.
Kill all these bugs with one patch.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Introduce per-sock inlines: sock_net(), sock_net_set()
and per-inet_timewait_sock inlines: twsk_net(), twsk_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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Introduce per-net_device inlines: dev_net(), dev_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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Last part of hop-limit determination is always:
hoplimit = dst_metric(dst, RTAX_HOPLIMIT);
if (hoplimit < 0)
hoplimit = ipv6_get_hoplimit(dst->dev).
Let's consolidate it as ip6_dst_hoplimit(dst).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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This patch adds some missing namespace
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add an netns parameter to ip6_route_output. That will allow to access
to the right routing table for outgoing traffic.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patches improves the readibility of the ip6_dst_gc() routine.
It simplifies long lines which grow a lot due to the introduction
of network namespaces support.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Acked-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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namespaces
This patch makes the necessary changes to make IPv6 dst_entry garbage
collection work with multiple network namespaces.
In ip6_dst_gc(), static local variables are now declared
per-namespace.
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ip6_dst_ops is moved inside the network namespace structure. All
references to this structure are now relative to the initial network
namespace.
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ip6_dst_ops is dynamically allocated in init and exit functions. That
provides the ability to do multiple instanciations of this structure.
This will be needed for network namespaces, indeed dst_ops stores data
that are required to be per namespace: entries and gc_thresh.
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The rt6_info structures are moved inside the network namespace
structure. All references to these structures are now relative to the
initial network namespace.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch make mindless changes and prepares the code to use dynamic
allocation for rt6_info structure. The code accesses the rt6_info
structure as a pointer instead of a global static variable.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch makes the routing engine use the network namespaces to
access routing informations: Add a network namespace parameter to
ipv6_route_ioctl and propagate the network namespace value to all the
routing code that have not yet been changed.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rt6_purge_dflt_routers
Add a network namespace parameter to rt6_purge_dflt_routers. This is
needed to call fib6_get_table with the appropriate network namespace.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rt6_get_route_info
Add a network namespace parameter to rt6_add_route_info() and
rt6_get_route_info to enable them to handle multiple network
namespaces.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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