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2010-02-26Merge branch 'master' of ↵David S. Miller1-10/+15
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2010-02-26netfilter: xtables: restore indentationJan Engelhardt1-10/+15
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-26ipv6: Use 1280 as min MTU for ipv6 forwardingUlrich Weber1-4/+8
Clients will set their MTU to 1280 if they receive a ICMPV6_PKT_TOOBIG message with an MTU less than 1280. To allow encapsulating of packets over a 1280 link we should always accept packets with a size of 1280 for forwarding even if the path has a lower MTU and fragment the encapsulated packets afterwards. In case a forwarded packet is not going to be encapsulated a ICMPV6_PKT_TOOBIG msg will still be send by ip6_fragment() with the correct MTU. Signed-off-by: Ulrich Weber <uweber@astaro.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-26ipv6: Remove IPV6_ADDR_RESERVEDUlrich Weber3-4/+3
RFC 4291 section 2.4 states that all uncategorized addresses should be considered as Global Unicast. This will remove IPV6_ADDR_RESERVED completely and return IPV6_ADDR_UNICAST in ipv6_addr_type() instead. Signed-off-by: Ulrich Weber <uweber@astaro.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-25Merge branch 'master' of ↵David S. Miller1-2/+14
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-02-24Merge branch 'master' of ↵David S. Miller2-229/+215
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2010-02-24netfilter: xtables: reduce arguments to translate_tableJan Engelhardt1-27/+15
Just pass in the entire repl struct. In case of a new table (e.g. ip6t_register_table), the repldata has been previously filled with table->name and table->size already (in ip6t_alloc_initial_table). Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-24netfilter: xtables: optimize call flow around xt_ematch_foreachJan Engelhardt1-62/+31
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-24netfilter: xtables: replace XT_MATCH_ITERATE macroJan Engelhardt1-17/+61
The macro is replaced by a list.h-like foreach loop. This makes the code more inspectable. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-24netfilter: xtables: optimize call flow around xt_entry_foreachJan Engelhardt1-118/+61
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-24netfilter: xtables: replace XT_ENTRY_ITERATE macroJan Engelhardt1-56/+104
The macro is replaced by a list.h-like foreach loop. This makes the code much more inspectable. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-22xfrm: SA lookups signature with markJamal Hadi Salim4-5/+7
pass mark to all SA 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>
2010-02-19net: Fix sysctl restarts...Eric W. Biederman1-2/+14
Yuck. It turns out that when we restart sysctls we were restarting with the values already changed. Which unfortunately meant that the second time through we thought there was no change and skipped all kinds of work, despite the fact that there was indeed a change. I have fixed this the simplest way possible by restoring the changed values when we restart the sysctl write. One of my coworkers spotted this bug when after disabling forwarding on an interface pings were still forwarded. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-19netfilter: nf_conntrack_reasm: properly handle packets fragmented into a ↵Patrick McHardy1-7/+1
single fragment When an ICMPV6_PKT_TOOBIG message is received with a MTU below 1280, all further packets include a fragment header. Unlike regular defragmentation, conntrack also needs to "reassemble" those fragments in order to obtain a packet without the fragment header for connection tracking. Currently nf_conntrack_reasm checks whether a fragment has either IP6_MF set or an offset != 0, which makes it ignore those fragments. Remove the invalid check and make reassembly handle fragment queues containing only a single fragment. Reported-and-tested-by: Ulrich Weber <uweber@astaro.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-18ipv6: drop unused "dev" arg of icmpv6_send()Alexey Dobriyan13-27/+23
Dunno, what was the idea, it wasn't used for a long time. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-18ipv6: use standard lists for FIB walksAlexey Dobriyan1-13/+4
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-18ipv6: remove stale MIB definitionsAlexey Dobriyan1-5/+0
ICMP6 MIB statistics was per-netns for quite a time. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-17IPv6: convert mc_lock to spinlockStephen Hemminger1-9/+10
Only used for writing, so convert to spinlock Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-17net: remove INIT_RCU_HEAD() usageAlexey Dobriyan2-2/+0
call_rcu() will unconditionally reinitialize RCU head anyway. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16percpu: add __percpu sparse annotations to netTejun Heo3-36/+39
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>
2010-02-16Merge branch 'master' of ↵David S. Miller1-5/+1
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-02-16net neigh: Decouple per interface neighbour table controls from binary sysctlsEric W. Biederman2-4/+2
Stop computing the number of neighbour table settings we have by counting the number of binary sysctls. This behaviour was silly and meant that we could not add another neighbour table setting without also adding another binary sysctl. Don't pass the binary sysctl path for neighour table entries into neigh_sysctl_register. These parameters are no longer used and so are just dead code. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16tunnels: fix netns vs proto registration orderingAlexey Dobriyan3-55/+41
Same stuff as in ip_gre patch: receive hook can be called before netns setup is done, oopsing in net_generic(). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16ipcomp: Avoid duplicate calls to ipcomp_destroyHerbert Xu1-5/+1
When ipcomp_tunnel_attach fails we will call ipcomp_destroy twice. This may lead to double-frees on certain structures. As there is no reason to explicitly call ipcomp_destroy, this patch removes it from ipcomp*.c and lets the standard xfrm_state destruction take place. This is based on the discovery and patch by Alexey Dobriyan. Tested-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>
2010-02-16Merge branch 'master' of ↵David S. Miller9-435/+208
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2010-02-15IPv6: Delete redundant counter of IPSTATS_MIB_REASMFAILSShan Wei1-9/+4
When no more memory can be allocated, fq_find() will return NULL and increase the value of IPSTATS_MIB_REASMFAILS. In this case, ipv6_frag_rcv() also increase the value of IPSTATS_MIB_REASMFAILS. So, the patch deletes redundant counter of IPSTATS_MIB_REASMFAILS in fq_find(). and deletes the unused parameter of idev. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15netfilter: nf_conntrack: add support for "conntrack zones"Patrick McHardy2-6/+14
Normally, each connection needs a unique identity. Conntrack zones allow to specify a numerical zone using the CT target, connections in different zones can use the same identity. Example: iptables -t raw -A PREROUTING -i veth0 -j CT --zone 1 iptables -t raw -A OUTPUT -o veth1 -j CT --zone 1 Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: nf_conntrack: pass template to l4proto ->error() handlerPatrick McHardy1-1/+2
The error handlers might need the template to get the conntrack zone introduced in the next patches to perform a conntrack lookup. Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: xtables: add const qualifiersJan Engelhardt1-40/+48
This should make it easier to remove redundant arguments later. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-15netfilter: xtables: constify args in compat copying functionsJan Engelhardt1-2/+2
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-15netfilter: iptables: remove unused function argumentsJan Engelhardt1-7/+3
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-12udp: remove redundant variableGerrit Renker1-8/+7
The variable 'copied' is used in udp_recvmsg() to emphasize that the passed 'len' is adjusted to fit the actual datagram length. But the same can be done by adjusting 'len' directly. This patch thus removes the indirection. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12IPv6: remove trivial nested _bh suffixstephen hemminger1-10/+11
Don't need to disable bottom half it is already down in the previous lock. Move some blank lines to group locking in same context. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12IPv6: keep permanent addresses on admin downstephen hemminger1-11/+24
Permanent IPV6 addresses should not be removed when the link is set to admin down, only when device is removed. When link is lost permanent addresses should be marked as tentative so that when link comes back they are subject to duplicate address detection (if DAD was enabled for that address). Other routing systems keep manually configured IPv6 addresses when link is set down. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12ipv6: fib: fix crash when changing large fib while dumping itPatrick McHardy1-2/+27
When the fib size exceeds what can be dumped in a single skb, the dump is suspended and resumed once the last skb has been received by userspace. When the fib is changed while the dump is suspended, the walker might contain stale pointers, causing a crash when the dump is resumed. BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: [<ffffffffa01bce04>] fib6_walk_continue+0xbb/0x124 [ipv6] PGD 5347a067 PUD 65c7067 PMD 0 Oops: 0000 [#1] PREEMPT SMP ... RIP: 0010:[<ffffffffa01bce04>] [<ffffffffa01bce04>] fib6_walk_continue+0xbb/0x124 [ipv6] ... Call Trace: [<ffffffff8104aca3>] ? mutex_spin_on_owner+0x59/0x71 [<ffffffffa01bd105>] inet6_dump_fib+0x11b/0x1b9 [ipv6] [<ffffffff81371af4>] netlink_dump+0x5b/0x19e [<ffffffff8134f288>] ? consume_skb+0x28/0x2a [<ffffffff81373b69>] netlink_recvmsg+0x1ab/0x2c6 [<ffffffff81372781>] ? netlink_unicast+0xfa/0x151 [<ffffffff813483e0>] __sock_recvmsg+0x6d/0x79 [<ffffffff81348a53>] sock_recvmsg+0xca/0xe3 [<ffffffff81066d4b>] ? autoremove_wake_function+0x0/0x38 [<ffffffff811ed1f8>] ? radix_tree_lookup_slot+0xe/0x10 [<ffffffff810b3ed7>] ? find_get_page+0x90/0xa5 [<ffffffff810b5dc5>] ? filemap_fault+0x201/0x34f [<ffffffff810ef152>] ? fget_light+0x2f/0xac [<ffffffff813519e7>] ? verify_iovec+0x4f/0x94 [<ffffffff81349a65>] sys_recvmsg+0x14d/0x223 Store the serial number when beginning to walk the fib and reload pointers when continuing to walk after a change occured. Similar to other dumping functions, this might cause unrelated entries to be missed when entries are deleted. Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-11netfilter: xtables: fix mangle tablesAlexey Dobriyan1-1/+3
In POST_ROUTING hook, calling dev_net(in) is going to oops. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-10netfilter: xtables: generate initial table on-demandJan Engelhardt5-134/+39
The static initial tables are pretty large, and after the net namespace has been instantiated, they just hang around for nothing. This commit removes them and creates tables on-demand at runtime when needed. Size shrinks by 7735 bytes (x86_64). Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-10netfilter: xtables: use xt_table for hook instantiationJan Engelhardt4-112/+28
The respective xt_table structures already have most of the metadata needed for hook setup. Add a 'priority' field to struct xt_table so that xt_hook_link() can be called with a reduced number of arguments. So should we be having more tables in the future, it comes at no static cost (only runtime, as before) - space saved: 6807373->6806555. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-10netfilter: xtables: compact table hook functions (2/2)Jan Engelhardt3-18/+6
The calls to ip6t_do_table only show minimal differences, so it seems like a good cleanup to merge them to a single one too. Space saving obtained by both patches: 6807725->6807373 ("Total" column from `size -A`.) Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-10netfilter: xtables: compact table hook functions (1/2)Jan Engelhardt4-106/+51
This patch combines all the per-hook functions in a given table into a single function. Together with the 2nd patch, further simplifications are possible up to the point of output code reduction. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-10Merge branch 'master' of /repos/git/net-next-2.6Patrick McHardy26-150/+197
Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-09Merge branch 'master' of ↵David S. Miller1-2/+2
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-02-08netfilter: xtables: compat out of scope fixAlexey Dobriyan1-2/+2
As per C99 6.2.4(2) when temporary table data goes out of scope, the behaviour is undefined: if (compat) { struct foo tmp; ... private = &tmp; } [dereference private] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: stable@kernel.org Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-03netfilter: nf_conntrack: support conntrack templatesPatrick McHardy1-1/+1
Support initializing selected parameters of new conntrack entries from a "conntrack template", which is a specially marked conntrack entry attached to the skb. Currently the helper and the event delivery masks can be initialized this way. Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-03netfilter: add struct net * to target parametersPatrick McHardy1-3/+5
Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-01-28netns xfrm: ipcomp6 supportAlexey Dobriyan1-5/+8
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28netns xfrm: xfrm6_tunnel in netnsAlexey Dobriyan2-59/+85
I'm not sure about rcu stuff near kmem cache destruction: * checks for non-empty hashes look bogus, they're done _before_ rcu_berrier() * unregistering netns ops is done before kmem_cache destoy (as it should), and unregistering involves rcu barriers by itself So it looks nothing should be done. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28netns xfrm: fixup xfrm6_tunnel error propagationAlexey Dobriyan1-5/+11
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28Merge branch 'master' of ↵David S. Miller2-11/+15
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-01-26ipv6: conntrack: Add member of user to nf_ct_frag6_queue structureShan Wei1-0/+1
The commit 0b5ccb2(title:ipv6: reassembly: use seperate reassembly queues for conntrack and local delivery) has broken the saddr&&daddr member of nf_ct_frag6_queue when creating new queue. And then hash value generated by nf_hashfn() was not equal with that generated by fq_find(). So, a new received fragment can't be inserted to right queue. The patch fixes the bug with adding member of user to nf_ct_frag6_queue structure. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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