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2012-09-10netlink: Rename pid to portid to avoid confusionEric W. Biederman1-16/+16
It is a frequent mistake to confuse the netlink port identifier with a process identifier. Try to reduce this confusion by renaming fields that hold port identifiers portid instead of pid. I have carefully avoided changing the structures exported to userspace to avoid changing the userspace API. I have successfully built an allyesconfig kernel with this change. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextPablo Neira Ayuso1-0/+1
This merges (3f509c6 netfilter: nf_nat_sip: fix incorrect handling of EBUSY for RTCP expectation) to Patrick McHardy's IPv6 NAT changes.
2012-09-03netfilter: nf_conntrack: add nf_ct_timeout_lookupPablo Neira Ayuso1-0/+20
This patch adds the new nf_ct_timeout_lookup function to encapsulate the timeout policy attachment that is called in the nf_conntrack_in path. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-08-31netfilter: nf_conntrack: fix racy timer handling with reliable eventsPablo Neira Ayuso1-0/+1
Existing code assumes that del_timer returns true for alive conntrack entries. However, this is not true if reliable events are enabled. In that case, del_timer may return true for entries that were just inserted in the dying list. Note that packets / ctnetlink may hold references to conntrack entries that were just inserted to such list. This patch fixes the issue by adding an independent timer for event delivery. This increases the size of the ecache extension. Still we can revisit this later and use variable size extensions to allocate this area on demand. Tested-by: Oliver Smith <olipro@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-08-30netfilter: ip6tables: add MASQUERADE targetPatrick McHardy1-1/+3
Signed-off-by: Patrick McHardy <kaber@trash.net>
2012-08-30netfilter: ipv6: add IPv6 NAT supportPatrick McHardy2-0/+6
Signed-off-by: Patrick McHardy <kaber@trash.net>
2012-08-30netfilter: add protocol independent NAT corePatrick McHardy7-88/+121
Convert the IPv4 NAT implementation to a protocol independent core and address family specific modules. Signed-off-by: Patrick McHardy <kaber@trash.net>
2012-08-30netfilter: nf_nat: add protoff argument to packet mangling functionsPatrick McHardy1-3/+8
For mangling IPv6 packets the protocol header offset needs to be known by the NAT packet mangling functions. Add a so far unused protoff argument and convert the conntrack and NAT helpers to use it in preparation of IPv6 NAT. Signed-off-by: Patrick McHardy <kaber@trash.net>
2012-07-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Conflicts: net/batman-adv/bridge_loop_avoidance.c net/batman-adv/bridge_loop_avoidance.h net/batman-adv/soft-interface.c net/mac80211/mlme.c With merge help from Antonio Quartulli (batman-adv) and Stephen Rothwell (drivers/net/usb/qmi_wwan.c). The net/mac80211/mlme.c conflict seemed easy enough, accounting for a conversion to some new tracing macros. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09netfilter: nf_ct_ecache: fix crash with multiple containers, one shutting downPablo Neira Ayuso1-1/+1
Hans reports that he's still hitting: BUG: unable to handle kernel NULL pointer dereference at 000000000000027c IP: [<ffffffff813615db>] netlink_has_listeners+0xb/0x60 PGD 0 Oops: 0000 [#3] PREEMPT SMP CPU 0 It happens when adding a number of containers with do: nfct_query(h, NFCT_Q_CREATE, ct); and most likely one namespace shuts down. this problem was supposed to be fixed by: 70e9942 netfilter: nf_conntrack: make event callback registration per-netns Still, it was missing one rcu_access_pointer to check if the callback is set or not. Reported-by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-07-04netfilter: nf_conntrack: generalize nf_ct_l4proto_netPablo Neira Ayuso1-0/+3
This patch generalizes nf_ct_l4proto_net by splitting it into chunks and moving the corresponding protocol part to where it really belongs to. To clarify, note that we follow two different approaches to support per-net depending if it's built-in or run-time loadable protocol tracker. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Gao feng <gaofeng@cn.fujitsu.com>
2012-06-27netfilter: nf_conntrack: add nf_ct_kfree_compat_sysctl_tableGao feng1-0/+8
This patch is a cleanup. It adds nf_ct_kfree_compat_sysctl_table to release l4proto's compat sysctl table and set the compat sysctl table point to NULL. This new function will be used by follow-up patches. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-27netfilter: nf_conntrack: prepare l4proto->init_net cleanupGao feng1-1/+1
l4proto->init contain quite redundant code. We can simplify this by adding a new parameter l3proto. This patch prepares that code simplification. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-18netfilter: fix missing symbols if CONFIG_NETFILTER_NETLINK_QUEUE_CT unsetPablo Neira Ayuso1-1/+1
ERROR: "nfqnl_ct_parse" [net/netfilter/nfnetlink_queue.ko] undefined! ERROR: "nfqnl_ct_seq_adjust" [net/netfilter/nfnetlink_queue.ko] undefined! ERROR: "nfqnl_ct_put" [net/netfilter/nfnetlink_queue.ko] undefined! ERROR: "nfqnl_ct_get" [net/netfilter/nfnetlink_queue.ko] undefined! We have to use CONFIG_NETFILTER_NETLINK_QUEUE_CT in include/net/netfilter/nfnetlink_queue.h, not CONFIG_NF_CONNTRACK. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19netfilter: nfnetlink_queue: fix compilation with NF_CONNTRACK disabledPablo Neira Ayuso1-0/+43
In "9cb0176 netfilter: add glue code to integrate nfnetlink_queue and ctnetlink" the compilation with NF_CONNTRACK disabled is broken. This patch fixes this issue. I have moved the conntrack part into nfnetlink_queue_ct.c to avoid peppering the entire nfnetlink_queue.c code with ifdefs. I also needed to rename nfnetlink_queue.c to nfnetlink_queue_pkt.c to update the net/netfilter/Makefile to support conditional compilation of the conntrack integration. This patch also adds CONFIG_NETFILTER_QUEUE_CT in case you want to explicitly disable the integration between nf_conntrack and nfnetlink_queue. Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-16netfilter: add user-space connection tracking helper infrastructurePablo Neira Ayuso1-0/+11
There are good reasons to supports helpers in user-space instead: * Rapid connection tracking helper development, as developing code in user-space is usually faster. * Reliability: A buggy helper does not crash the kernel. Moreover, we can monitor the helper process and restart it in case of problems. * Security: Avoid complex string matching and mangling in kernel-space running in privileged mode. Going further, we can even think about running user-space helpers as a non-root process. * Extensibility: It allows the development of very specific helpers (most likely non-standard proprietary protocols) that are very likely not to be accepted for mainline inclusion in the form of kernel-space connection tracking helpers. This patch adds the infrastructure to allow the implementation of user-space conntrack helpers by means of the new nfnetlink subsystem `nfnetlink_cthelper' and the existing queueing infrastructure (nfnetlink_queue). I had to add the new hook NF_IP6_PRI_CONNTRACK_HELPER to register ipv[4|6]_helper which results from splitting ipv[4|6]_confirm into two pieces. This change is required not to break NAT sequence adjustment and conntrack confirmation for traffic that is enqueued to our user-space conntrack helpers. Basic operation, in a few steps: 1) Register user-space helper by means of `nfct': nfct helper add ftp inet tcp [ It must be a valid existing helper supported by conntrack-tools ] 2) Add rules to enable the FTP user-space helper which is used to track traffic going to TCP port 21. For locally generated packets: iptables -I OUTPUT -t raw -p tcp --dport 21 -j CT --helper ftp For non-locally generated packets: iptables -I PREROUTING -t raw -p tcp --dport 21 -j CT --helper ftp 3) Run the test conntrackd in helper mode (see example files under doc/helper/conntrackd.conf conntrackd 4) Generate FTP traffic going, if everything is OK, then conntrackd should create expectations (you can check that with `conntrack': conntrack -E expect [NEW] 301 proto=6 src=192.168.1.136 dst=130.89.148.12 sport=0 dport=54037 mask-src=255.255.255.255 mask-dst=255.255.255.255 sport=0 dport=65535 master-src=192.168.1.136 master-dst=130.89.148.12 sport=57127 dport=21 class=0 helper=ftp [DESTROY] 301 proto=6 src=192.168.1.136 dst=130.89.148.12 sport=0 dport=54037 mask-src=255.255.255.255 mask-dst=255.255.255.255 sport=0 dport=65535 master-src=192.168.1.136 master-dst=130.89.148.12 sport=57127 dport=21 class=0 helper=ftp This confirms that our test helper is receiving packets including the conntrack information, and adding expectations in kernel-space. The user-space helper can also store its private tracking information in the conntrack structure in the kernel via the CTA_HELP_INFO. The kernel will consider this a binary blob whose layout is unknown. This information will be included in the information that is transfered to user-space via glue code that integrates nfnetlink_queue and ctnetlink. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-16netfilter: ctnetlink: add CTA_HELP_INFO attributePablo Neira Ayuso1-0/+1
This attribute can be used to modify and to dump the internal protocol information. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-16netfilter: nfnetlink_queue: add NAT TCP sequence adjustment if packet mangledPablo Neira Ayuso1-0/+4
User-space programs that receive traffic via NFQUEUE may mangle packets. If NAT is enabled, this usually puzzles sequence tracking, leading to traffic disruptions. With this patch, nfnl_queue will make the corresponding NAT TCP sequence adjustment if: 1) The packet has been mangled, 2) the NFQA_CFG_F_CONNTRACK flag has been set, and 3) NAT is detected. There are some records on the Internet complaning about this issue: http://stackoverflow.com/questions/260757/packet-mangling-utilities-besides-iptables By now, we only support TCP since we have no helpers for DCCP or SCTP. Better to add this if we ever have some helper over those layer 4 protocols. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-16netfilter: nf_ct_helper: implement variable length helper private dataPablo Neira Ayuso2-33/+17
This patch uses the new variable length conntrack extensions. Instead of using union nf_conntrack_help that contain all the helper private data information, we allocate variable length area to store the private helper data. This patch includes the modification of all existing helpers. It also includes a couple of include header to avoid compilation warnings. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-16netfilter: nf_ct_ext: support variable length extensionsPablo Neira Ayuso1-3/+6
We can now define conntrack extensions of variable size. This patch is useful to get rid of these unions: union nf_conntrack_help union nf_conntrack_proto union nf_conntrack_nat_help Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-16netfilter: nf_ct_helper: allocate 16 bytes for the helper and policy namesPablo Neira Ayuso2-2/+4
This patch modifies the struct nf_conntrack_helper to allocate the room for the helper name. The maximum length is 16 bytes (this was already introduced in 2.6.24). For the maximum length for expectation policy names, I have also selected 16 bytes. This patch is required by the follow-up patch to support user-space connection tracking helpers. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-07netfilter: nf_conntrack: add namespace support for cttimeoutGao feng1-1/+2
This patch adds namespace support for cttimeout. Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-07netfilter: nf_conntrack: remove now unused sysctl for nf_conntrack_l[3|4]protoPablo Neira Ayuso2-12/+0
Since the sysctl data for l[3|4]proto now resides in pernet nf_proto_net. We can now remove this unused fields from struct nf_contrack_l[3,4]proto. Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-07netfilter: nf_ct_generic: add namespace supportGao feng1-2/+2
This patch adds namespace support for the generic layer 4 protocol tracker. Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-07netfilter: nf_conntrack: prepare namespace support for l3 protocol trackersGao feng1-2/+7
This patch prepares the namespace support for layer 3 protocol trackers. Basically, this modifies the following interfaces: * nf_ct_l3proto_[un]register_sysctl. * nf_conntrack_l3proto_[un]register. We add a new nf_ct_l3proto_net is used to get the pernet data of l3proto. This adds rhe new struct nf_ip_net that is used to store the sysctl header and l3proto_ipv4,l4proto_tcp(6),l4proto_udp(6),l4proto_icmp(v6) because the protos such tcp and tcp6 use the same data,so making nf_ip_net as a field of netns_ct is the easiest way to manager it. This patch also adds init_net to struct nf_conntrack_l3proto to initial the layer 3 protocol pernet data. Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-07netfilter: nf_conntrack: prepare namespace support for l4 protocol trackersGao feng1-2/+9
This patch prepares the namespace support for layer 4 protocol trackers. Basically, this modifies the following interfaces: * nf_ct_[un]register_sysctl * nf_conntrack_l4proto_[un]register to include the namespace parameter. We still use init_net in this patch to prepare the ground for follow-up patches for each layer 4 protocol tracker. We add a new net_id field to struct nf_conntrack_l4proto that is used to store the pernet_operations id for each layer 4 protocol tracker. Note that AF_INET6's protocols do not need to do sysctl compat. Thus, we only register compat sysctl when l4proto.l3proto != AF_INET6. Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-08netfilter: nf_conntrack: use this_cpu_inc()Eric Dumazet1-8/+2
this_cpu_inc() is IRQ safe and faster than local_bh_disable()/__this_cpu_inc()/local_bh_enable(), at least on x86. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Christoph Lameter <cl@linux.com> Cc: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-08netfilter: nf_ct_helper: allow to disable automatic helper assignmentEric Leblond1-2/+2
This patch allows you to disable automatic conntrack helper lookup based on TCP/UDP ports, eg. echo 0 > /proc/sys/net/netfilter/nf_conntrack_helper [ Note: flows that already got a helper will keep using it even if automatic helper assignment has been disabled ] Once this behaviour has been disabled, you have to explicitly use the iptables CT target to attach helper to flows. There are good reasons to stop supporting automatic helper assignment, for further information, please read: http://www.netfilter.org/news.html#2012-04-03 This patch also adds one message to inform that automatic helper assignment is deprecated and it will be removed soon (this is spotted only once, with the first flow that gets a helper attached to make it as less annoying as possible). Signed-off-by: Eric Leblond <eric@regit.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-20net: Convert nf_conntrack_proto to use register_net_sysctlEric W. Biederman1-1/+1
There isn't much advantage here except that strings paths are a bit easier to read, and converting everything to them allows me to kill off ctl_path. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-26netfilter: xt_LOG: don't use xchg() for simple assignmentJan Beulich1-1/+1
At least on ia64 the (bogus) use of xchg() here results in the compiler warning about an unused expression result. As only an assignment is intended here, convert it to such. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-03-23netfilter: cttimeout: fix dependency with l4protocol conntrack modulePablo Neira Ayuso2-1/+5
This patch introduces nf_conntrack_l4proto_find_get() and nf_conntrack_l4proto_put() to fix module dependencies between timeout objects and l4-protocol conntrack modules. Thus, we make sure that the module cannot be removed if it is used by any of the cttimeout objects. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-03-07netfilter: xt_LOG: add __printf() to sb_add()Eric Dumazet1-1/+1
Helps to find format mismatches at compile time Suggested-by: David Laight <David.Laight@ACULAB.COM> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
2012-03-07netfilter: nf_ct_ext: add timeout extensionPablo Neira Ayuso2-0/+82
This patch adds the timeout extension, which allows you to attach specific timeout policies to flows. This extension is only used by the template conntrack. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-03-07netfilter: add cttimeout infrastructure for fine timeout tuningPablo Neira Ayuso1-0/+11
This patch adds the infrastructure to add fine timeout tuning over nfnetlink. Now you can use the NFNL_SUBSYS_CTNETLINK_TIMEOUT subsystem to create/delete/dump timeout objects that contain some specific timeout policy for one flow. The follow up patches will allow you attach timeout policy object to conntrack via the CT target and the conntrack extension infrastructure. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-03-07netfilter: nf_conntrack: pass timeout array to l4->new and l4->packetPablo Neira Ayuso1-2/+6
This patch defines a new interface for l4 protocol trackers: unsigned int *(*get_timeouts)(struct net *net); that is used to return the array of unsigned int that contains the timeouts that will be applied for this flow. This is passed to the l4proto->new(...) and l4proto->packet(...) functions to specify the timeout policy. This interface allows per-net global timeout configuration (although only DCCP supports this by now) and it will allow custom custom timeout configuration by means of follow-up patches. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-03-07netfilter: ctnetlink: allow to set expectfn for expectationsPablo Neira Ayuso1-0/+13
This patch allows you to set expectfn which is specifically used by the NAT side of most of the existing conntrack helpers. I have added a symbol map that uses a string as key to look up for the function that is attached to the expectation object. This is the best solution I came out with to solve this issue. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-02-24netfilter: ctnetlink: fix soft lockup when netlink adds new entries (v2)Jozsef Kadlecsik1-1/+1
Marcell Zambo and Janos Farago noticed and reported that when new conntrack entries are added via netlink and the conntrack table gets full, soft lockup happens. This is because the nf_conntrack_lock is held while nf_conntrack_alloc is called, which is in turn wants to lock nf_conntrack_lock while evicting entries from the full table. The patch fixes the soft lockup with limiting the holding of the nf_conntrack_lock to the minimum, where it's absolutely required. It required to extend (and thus change) nf_conntrack_hash_insert so that it makes sure conntrack and ctnetlink do not add the same entry twice to the conntrack table. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-25Merge branch 'nf-next' of git://1984.lsi.us.es/net-nextDavid S. Miller6-23/+12
2011-12-23netfilter: ctnetlink: remove dead NAT codePatrick McHardy1-5/+0
The NAT range to nlattr conversation callbacks and helpers are entirely dead code and are also useless since there are no NAT ranges in conntrack context, they are only used for initially selecting a tuple. The final NAT information is contained in the selected tuples of the conntrack entry. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-23netfilter: nat: remove module reference counting from NAT protocolsPatrick McHardy1-2/+0
The only remaining user of NAT protocol module reference counting is NAT ctnetlink support. Since this is a fairly short sequence of code, convert over to use RCU and remove module reference counting. Module unregistration is already protected by RCU using synchronize_rcu(), so no further changes are necessary. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-23netfilter: nf_nat: export NAT definitions to userspacePatrick McHardy4-15/+12
Export the NAT definitions to userspace. So far userspace (specifically, iptables) has been copying the headers files from include/net. Also rename some structures and definitions in preparation for IPv6 NAT. Since these have never been officially exported, this doesn't affect existing userspace code. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-23netfilter: rework user-space expectation helper supportPablo Neira Ayuso1-1/+0
This partially reworks bc01befdcf3e40979eb518085a075cbf0aacede0 which added userspace expectation support. This patch removes the nf_ct_userspace_expect_list since now we force to use the new iptables CT target feature to add the helper extension for conntracks that have attached expectations from userspace. A new version of the proof-of-concept code to implement userspace helpers from userspace is available at: http://people.netfilter.org/pablo/userspace-conntrack-helpers/nf-ftp-helper-POC.tar.bz2 This patch also modifies the CT target to allow to set the conntrack's userspace helper status flags. This flag is used to tell the conntrack system to explicitly allocate the helper extension. This helper extension is useful to link the userspace expectations with the master conntrack that is being tracked from one userspace helper. This feature fixes a problem in the current approach of the userspace helper support. Basically, if the master conntrack that has got a userspace expectation vanishes, the expectations point to one invalid memory address. Thus, triggering an oops in the expectation deletion event path. I decided not to add a new revision of the CT target because I only needed to add a new flag for it. I'll document in this issue in the iptables manpage. I have also changed the return value from EINVAL to EOPNOTSUPP if one flag not supported is specified. Thus, in the future adding new features that only require a new flag can be added without a new revision. There is no official code using this in userspace (apart from the proof-of-concept) that uses this infrastructure but there will be some by beginning 2012. Reported-by: Sam Roberts <vieuxtech@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-18netfilter: nf_conntrack: use atomic64 for accounting countersEric Dumazet1-2/+2
We can use atomic64_t infrastructure to avoid taking a spinlock in fast path, and remove inaccuracies while reading values in ctnetlink_dump_counters() and connbytes_mt() on 32bit arches. Suggested by Pablo. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-11net: use IS_ENABLED(CONFIG_IPV6)Eric Dumazet1-1/+1
Instead of testing defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-22netfilter: nf_conntrack: make event callback registration per-netnsPablo Neira Ayuso1-9/+10
This patch fixes an oops that can be triggered following this recipe: 0) make sure nf_conntrack_netlink and nf_conntrack_ipv4 are loaded. 1) container is started. 2) connect to it via lxc-console. 3) generate some traffic with the container to create some conntrack entries in its table. 4) stop the container: you hit one oops because the conntrack table cleanup tries to report the destroy event to user-space but the per-netns nfnetlink socket has already gone (as the nfnetlink socket is per-netns but event callback registration is global). To fix this situation, we make the ctnl_notifier per-netns so the callback is registered/unregistered if the container is created/destroyed. Alex Bligh and Alexey Dobriyan originally proposed one small patch to check if the nfnetlink socket is gone in nfnetlink_has_listeners, but this is a very visited path for events, thus, it may reduce performance and it looks a bit hackish to check for the nfnetlink socket only to workaround this situation. As a result, I decided to follow the bigger path choice, which seems to look nicer to me. Cc: Alexey Dobriyan <adobriyan@gmail.com> Reported-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-11-06Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linuxLinus Torvalds1-0/+2
* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include <linux/module.h> acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include <linux/module.h> net: sch_generic remove redundant use of <linux/module.h> net: inet_timewait_sock doesnt need <linux/module.h> ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h
2011-11-01netfilter: export NAT definitions through linux/netfilter_ipv4/nf_nat.hPablo Neira Ayuso2-51/+2
This patch exports several definitions that used to live under include/net/netfilter/nf_nat.h. These definitions, although not exported, have been used by iptables and other userspace applications like miniupnpd since long time. Basically, these userspace tools included some internal definition of the required structures and they assume no changes in the binary representation (which is OK indeed). To resolve this situation, this patch makes public the required structure and install them in INSTALL_HDR_PATH. See: https://bugs.gentoo.org/376873, for more information. This patch is heavily based on the initial patch sent by: Anthony G. Basile <blueness@gentoo.org> Which was entitled: netfilter: export sanitized nf_nat.h to INSTALL_HDR_PATH Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-10-31treewide: use __printf not __attribute__((format(printf,...)))Joe Perches1-1/+2
Standardize the style for compiler based printf format verification. Standardized the location of __printf too. Done via script and a little typing. $ grep -rPl --include=*.[ch] -w "__attribute__" * | \ grep -vP "^(tools|scripts|include/linux/compiler-gcc.h)" | \ xargs perl -n -i -e 'local $/; while (<>) { s/\b__attribute__\s*\(\s*\(\s*format\s*\(\s*printf\s*,\s*(.+)\s*,\s*(.+)\s*\)\s*\)\s*\)/__printf($1, $2)/g ; print; }' [akpm@linux-foundation.org: revert arch bits] Signed-off-by: Joe Perches <joe@perches.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-31nf_conntrack.h: fix up fallout from implicit moduleparam.h presencePaul Gortmaker1-0/+2
The implicit presence of module.h everywhere meant that this header also was getting moduleparam.h which defines struct kernel_param. Since it only needs to know that kernel_param is a struct, call that out instead of adding an include of moduleparam.h -- to get rid of this: include/net/netfilter/nf_conntrack.h:316: warning: 'struct kernel_param' declared inside parameter list include/net/netfilter/nf_conntrack.h:316: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-07-26atomic: use <linux/atomic.h>Arun Sharma1-1/+1
This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>