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* ipv6: On interface down/unregister, purge icmp routes too.David S. Miller2008-09-101-0/+20
| | | | | | | | | | | | | | | | | 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>
* netns: Add network namespace argument to rt6_fill_node() and ↵Brian Haley2008-08-141-5/+7
| | | | | | | | | | | 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>
* ipv6: Fix OOPS, ip -f inet6 route get fec0::1, linux-2.6.26, ↵Brian Haley2008-08-131-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* ipv6: replace dst_metric() with dst_mtu() in net/ipv6/route.c.Rami Rosen2008-08-061-1/+1
| | | | | | | 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>
* ipv6: icmp6_dst_gc return changeStephen Hemminger2008-07-221-6/+4
| | | | | | | | 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>
* ipv6 netns: Make several "global" sysctl variables namespace aware.YOSHIFUJI Hideaki2008-07-191-2/+2
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* proc: consolidate per-net single-release callersPavel Emelyanov2008-07-181-18/+2
| | | | | | | They are symmetrical to single_open ones :) Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* proc: consolidate per-net single_open callersPavel Emelyanov2008-07-181-24/+2
| | | | | | | 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>
* ipv6 route: Prefer outgoing interface with source address assigned.YOSHIFUJI Hideaki2008-07-031-4/+16
| | | | | | | | | 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>
* ipv6: Assume the loopback address in link-local scope.YOSHIFUJI Hideaki2008-07-031-1/+1
| | | | | | | 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>
* Merge branch 'master' of ↵David S. Miller2008-06-281-3/+3
|\ | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/iwlwifi/iwl4965-base.c
| * ipv6 route: Convert rt6_device_match() to use RT6_LOOKUP_F_xxx flags.YOSHIFUJI Hideaki2008-06-271-3/+3
| | | | | | | | | | | | | | | | | | | | 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>
* | Merge branch 'master' of ↵David S. Miller2008-06-131-2/+6
|\ \ | |/ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/smc911x.c
| * ipv6 route: Fix route lifetime in netlink message.YOSHIFUJI Hideaki2008-06-121-2/+6
| | | | | | | | | | | | | | | | | | | | 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>
* | net: remove CVS keywordsAdrian Bunk2008-06-111-2/+0
|/ | | | | | | | 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>
* [IPV6] ADDRCONF: Allow longer lifetime on 64bit archs.YOSHIFUJI Hideaki2008-06-051-9/+3
| | | | | | | | | | - 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>
* ipsec: Use the correct ip_local_out functionHerbert Xu2008-05-201-1/+1
| | | | | | | | | | | | | | | | | | | 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>
* ipv6 addrconf: Allow infinite prefix lifetime.YOSHIFUJI Hideaki2008-05-191-1/+3
| | | | | | | | | 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>
* ipv6 route: Fix lifetime in netlink.YOSHIFUJI Hideaki2008-05-191-1/+3
| | | | | | | | | 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>
* ipv6 addrconf: Fix route lifetime setting in corner case.YOSHIFUJI Hideaki2008-05-191-1/+1
| | | | | | | | | 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>
* ip: Use inline function dst_metric() instead of direct access to dst->metric[]Satoru SATOH2008-05-041-3/+3
| | | | | | | | | | | | 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>
* [NETNS]: Don't initialize err variable twice.Pavel Emelyanov2008-04-211-2/+1
| | | | | | | 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>
* [IPV6]: Make struct ip6_prohibit_entry_template static.Adrian Bunk2008-04-211-1/+1
| | | | | | | | 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>
* [NETNS]: Add netns refcnt debug for dst ops.Denis V. Lunev2008-04-161-1/+3
| | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: Make address arguments const.YOSHIFUJI Hideaki2008-04-121-3/+3
| | | | | | | | | | | | | | | | | | | - 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>
* Merge branch 'net-2.6.26-isatap-20080403' of ↵David S. Miller2008-04-081-2/+0
|\ | | | | | | git://git.linux-ipv6.org/gitroot/yoshfuji/linux-2.6-dev
| * [IPV6] SIT: Add PRL management for ISATAP.Templin, Fred L2008-04-031-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* | [IPV6] MROUTE: Support multicast forwarding.YOSHIFUJI Hideaki2008-04-051-7/+23
|/ | | | | | | | 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>
* [IPV6]: Fix potential net leak and oops in ipv6 routing code.Pavel Emelyanov2008-03-261-2/+20
| | | | | | | | | | | | | | | | 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>
* [NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.YOSHIFUJI Hideaki2008-03-261-2/+2
| | | | | | | | | 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>
* [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.YOSHIFUJI Hideaki2008-03-261-20/+20
| | | | | | | | 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>
* [IPV6]: Support Source Address Selection API (RFC5014).YOSHIFUJI Hideaki2008-03-251-1/+10
| | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [IPV6]: Optimize hop-limit determination.YOSHIFUJI Hideaki2008-03-251-9/+11
| | | | | | | | | | | 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>
* [NETNS][IPV6] fix some missing namespaceDaniel Lezcano2008-03-071-1/+1
| | | | | | | This patch adds some missing namespace Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-03-051-2/+2
| | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS][IPV6] route6 - add netns parameter to ip6_route_outputDaniel Lezcano2008-03-051-3/+4
| | | | | | | | | 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>
* [NETNS][IPV6] route6 - Make ip6_dst_gc simplerDaniel Lezcano2008-03-041-9/+13
| | | | | | | | | | 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>
* [NETNS][IPV6] route6 - make garbage collection work with multiple network ↵Benjamin Thery2008-03-041-11/+12
| | | | | | | | | | | | | | 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>
* [NETNS][IPV6] route6 - move ip6_dst_ops inside the network namespaceBenjamin Thery2008-03-041-31/+31
| | | | | | | | | | 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>
* [NETNS][IPV6] route6 - dynamically allocate ip6_dst_opsDaniel Lezcano2008-03-041-18/+29
| | | | | | | | | | | | 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>
* [NETNS][IPV6] rt6_info - move rt6_info structure inside the namespaceDaniel Lezcano2008-03-041-69/+133
| | | | | | | | | | 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>
* [NETNS][IPV6] rt6_info - make rt6_info accessed as a pointerDaniel Lezcano2008-03-041-16/+54
| | | | | | | | | | 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>
* [NETNS][IPV6] route6 - make route6 per namespaceDaniel Lezcano2008-03-041-49/+49
| | | | | | | | | | | 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>
* [NETNS][IPV6] route6 - Pass the network namespace parameter to ↵Daniel Lezcano2008-03-041-2/+2
| | | | | | | | | | | 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>
* [NETNS][IPV6] route6 - Pass network namespace to rt6_add_route_info and ↵Daniel Lezcano2008-03-041-8/+17
| | | | | | | | | | | | 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>
* [NETNS][IPV6] route6 - Make proc entry /proc/net/rt6_stats per namespaceDaniel Lezcano2008-03-041-8/+18
| | | | | | | | Make the proc entry /proc/net/rt6_stats work in all 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>
* [NETNS][IPV6] route6 - Pass the network namespace parameter to rt6_lookupDaniel Lezcano2008-03-041-5/+5
| | | | | | | | Add a network namespace parameter to rt6_lookup(). 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>
* [NETNS][IPV6] route6 - create route6 proc files for the namespaceDaniel Lezcano2008-03-041-43/+27
| | | | | | | | | | Make /proc/net/ipv6_route and /proc/net/rt6_stats to be per namespace. These proc files are now created when the network namespace is initialized. 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>
* [NETNS][IPV6] rt6_stats - make the stats per network namespaceBenjamin Thery2008-03-031-5/+7
| | | | | | | | | | The rt6_stats is now per namespace with this patch. It is allocated when a network namespace is created and freed when the network namespace exits and references are relative to the 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>
* [NETNS][IPV6] rt6_stats - dynamically allocate the routes statisticsDaniel Lezcano2008-03-031-4/+4
| | | | | | | | | | This patch allocates the rt6_stats struct dynamically when the fib6 is initialized. That provides the ability to create several instances of this structure for the 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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