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* neigh: Netlink notification for administrative NUD state changeBob Gilligan2013-12-17
| | | | | | | | | | | | | | | | | | | | The neighbour code sends up an RTM_NEWNEIGH netlink notification if the NUD state of a neighbour cache entry is changed by a timer (e.g. from REACHABLE to STALE), even if the lladdr of the entry has not changed. But an administrative change to the the NUD state of a neighbour cache entry that does not change the lladdr (e.g. via "ip -4 neigh change ... nud ...") does not trigger a netlink notification. This means that netlink listeners will not hear about administrative NUD state changes such as from a resolved state to PERMANENT. This patch changes the neighbor code to generate an RTM_NEWNEIGH message when the NUD state of an entry is changed administratively. Signed-off-by: Bob Gilligan <gilligan@aristanetworks.com> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller2013-12-17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== The following patchset contains two Netfilter fixes for your net tree, they are: * Fix endianness in nft_reject, the NFTA_REJECT_TYPE netlink attributes was not converted to network byte order as needed by all nfnetlink subsystems, from Eric Leblond. * Restrict SYNPROXY target to INPUT and FORWARD chains, this avoid a possible crash due to misconfigurations, from Patrick McHardy. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * netfilter: nft_reject: fix endianness in dump functionEric Leblond2013-12-12
| | | | | | | | | | | | | | | | | | | | The dump function in nft_reject_ipv4 was not converting a u32 field to network order before sending it to userspace, this needs to happen for consistency with other nf_tables and nfnetlink subsystems. Signed-off-by: Eric Leblond <eric@regit.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * netfilter: SYNPROXY target: restrict to INPUT/FORWARDPatrick McHardy2013-12-11
| | | | | | | | | | | | | | | | | | Fix a crash in synproxy_send_tcp() when using the SYNPROXY target in the PREROUTING chain caused by missing routing information. Reported-by: Nicki P. <xastx@gmx.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* | net: unix: allow bind to fail on mutex lockSasha Levin2013-12-17
| | | | | | | | | | | | | | | | | | | | | | | | This is similar to the set_peek_off patch where calling bind while the socket is stuck in unix_dgram_recvmsg() will block and cause a hung task spew after a while. This is also the last place that did a straightforward mutex_lock(), so there shouldn't be any more of these patches. Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | udp: ipv4: do not use sk_dst_lock from softirq contextEric Dumazet2013-12-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Using sk_dst_lock from softirq context is not supported right now. Instead of adding BH protection everywhere, udp_sk_rx_dst_set() can instead use xchg(), as suggested by David. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Fixes: 975022310233 ("udp: ipv4: must add synchronization in udp_sk_rx_dst_set()") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | sctp: loading sctp when load sctp_probewangweidong2013-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | when I modprobe sctp_probe, it failed with "FATAL: ". I found that sctp should load before sctp_probe register jprobe. So I add a sctp_setup_jprobe for loading 'sctp' when first failed to register jprobe, just do this similar to dccp_probe. v2: add MODULE_SOFTDEP and check of request_module, as suggested by Neil Signed-off-by: Wang Weidong <wangweidong1@huawei.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2013-12-15
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Revert CHECKSUM_COMPLETE optimization in pskb_trim_rcsum(), I can't figure out why it breaks things. 2) Fix comparison in netfilter ipset's hash_netnet4_data_equal(), it was basically doing "x == x", from Dave Jones. 3) Freescale FEC driver was DMA mapping the wrong number of bytes, from Sebastian Siewior. 4) Blackhole and prohibit routes in ipv6 were not doing the right thing because their ->input and ->output methods were not being assigned correctly. Now they behave properly like their ipv4 counterparts. From Kamala R. 5) Several drivers advertise the NETIF_F_FRAGLIST capability, but really do not support this feature and will send garbage packets if fed fraglist SKBs. From Eric Dumazet. 6) Fix long standing user triggerable BUG_ON over loopback in RDS protocol stack, from Venkat Venkatsubra. 7) Several not so common code paths can potentially try to invoke packet scheduler actions that might be NULL without checking. Shore things up by either 1) defining a method as mandatory and erroring on registration if that method is NULL 2) defininig a method as optional and the registration function hooks up a default implementation when NULL is seen. From Jamal Hadi Salim. 8) Fix fragment detection in xen-natback driver, from Paul Durrant. 9) Kill dangling enter_memory_pressure method in cg_proto ops, from Eric W Biederman. 10) SKBs that traverse namespaces should have their local_df cleared, from Hannes Frederic Sowa. 11) IOCB file position is not being updated by macvtap_aio_read() and tun_chr_aio_read(). From Zhi Yong Wu. 12) Don't free virtio_net netdev before releasing all of the NAPI instances. From Andrey Vagin. 13) Procfs entry leak in xt_hashlimit, from Sergey Popovich. 14) IPv6 routes that are no cached routes should not count against the garbage collection limits. We had this almost right, but were missing handling addrconf generated routes properly. From Hannes Frederic Sowa. 15) fib{4,6}_rule_suppress() have to consider potentially seeing NULL route info when they are called, from Stefan Tomanek. 16) TUN and MACVTAP have had truncated packet signalling for some time, fix from Jason Wang. 17) Fix use after frrr in __udp4_lib_rcv(), from Eric Dumazet. 18) xen-netback does not interpret the NAPI budget properly for TX work, fix from Paul Durrant. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (132 commits) igb: Fix for issue where values could be too high for udelay function. i40e: fix null dereference xen-netback: fix gso_prefix check net: make neigh_priv_len in struct net_device 16bit instead of 8bit drivers: net: cpsw: fix for cpsw crash when build as modules xen-netback: napi: don't prematurely request a tx event xen-netback: napi: fix abuse of budget sch_tbf: use do_div() for 64-bit divide udp: ipv4: must add synchronization in udp_sk_rx_dst_set() net:fec: remove duplicate lines in comment about errata ERR006358 Revert "8390 : Replace ei_debug with msg_enable/NETIF_MSG_* feature" 8390 : Replace ei_debug with msg_enable/NETIF_MSG_* feature xen-netback: make sure skb linear area covers checksum field net: smc91x: Fix device tree based configuration so it's usable udp: ipv4: fix potential use after free in udp_v4_early_demux() macvtap: signal truncated packets tun: unbreak truncated packet signalling net: sched: htb: fix the calculation of quantum net: sched: tbf: fix the calculation of max_size micrel: add support for KSZ8041RNLI ...
| * | sch_tbf: use do_div() for 64-bit divideYang Yingliang2013-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's doing a 64-bit divide which is not supported on 32-bit architectures in psched_ns_t2l(). The correct way to do this is to use do_div(). It's introduced by commit cc106e441a63 ("net: sched: tbf: fix the calculation of max_size") Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | udp: ipv4: must add synchronization in udp_sk_rx_dst_set()Eric Dumazet2013-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike TCP, UDP input path does not hold the socket lock. Before messing with sk->sk_rx_dst, we must use a spinlock, otherwise multiple cpus could leak a refcount. This patch also takes care of renewing a stale dst entry. (When the sk->sk_rx_dst would not be used by IP early demux) Fixes: 421b3885bf6d ("udp: ipv4: Add udp early demux") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Shawn Bohrer <sbohrer@rgmadvisors.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | udp: ipv4: fix potential use after free in udp_v4_early_demux()Eric Dumazet2013-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pskb_may_pull() can reallocate skb->head, we need to move the initialization of iph and uh pointers after its call. Fixes: 421b3885bf6d ("udp: ipv4: Add udp early demux") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Shawn Bohrer <sbohrer@rgmadvisors.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: sched: htb: fix the calculation of quantumYang Yingliang2013-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now, 32bit rates may be not the true rate. So use rate_bytes_ps which is from max(rate32, rate64) to calcualte quantum. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: sched: tbf: fix the calculation of max_sizeYang Yingliang2013-12-11
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current max_size is caluated from rate table. Now, the rate table has been replaced and it's wrong to caculate max_size based on this rate table. It can lead wrong calculation of max_size. The burst in kernel may be lower than user asked, because burst may gets some loss when transform it to buffer(E.g. "burst 40kb rate 30mbit/s") and it seems we cannot avoid this loss. Burst's value(max_size) based on rate table may be equal user asked. If a packet's length is max_size, this packet will be stalled in tbf_dequeue() because its length is above the burst in kernel so that it cannot get enough tokens. The max_size guards against enqueuing packet sizes above q->buffer "time" in tbf_enqueue(). To make consistent with the calculation of tokens, this patch add a helper psched_ns_t2l() to calculate burst(max_size) directly to fix this problem. After this fix, we can support to using 64bit rates to calculate burst as well. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * udp: ipv4: fix an use after free in __udp4_lib_rcv()Eric Dumazet2013-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dave Jones reported a use after free in UDP stack : [ 5059.434216] ========================= [ 5059.434314] [ BUG: held lock freed! ] [ 5059.434420] 3.13.0-rc3+ #9 Not tainted [ 5059.434520] ------------------------- [ 5059.434620] named/863 is freeing memory ffff88005e960000-ffff88005e96061f, with a lock still held there! [ 5059.434815] (slock-AF_INET){+.-...}, at: [<ffffffff8149bd21>] udp_queue_rcv_skb+0xd1/0x4b0 [ 5059.435012] 3 locks held by named/863: [ 5059.435086] #0: (rcu_read_lock){.+.+..}, at: [<ffffffff8143054d>] __netif_receive_skb_core+0x11d/0x940 [ 5059.435295] #1: (rcu_read_lock){.+.+..}, at: [<ffffffff81467a5e>] ip_local_deliver_finish+0x3e/0x410 [ 5059.435500] #2: (slock-AF_INET){+.-...}, at: [<ffffffff8149bd21>] udp_queue_rcv_skb+0xd1/0x4b0 [ 5059.435734] stack backtrace: [ 5059.435858] CPU: 0 PID: 863 Comm: named Not tainted 3.13.0-rc3+ #9 [loadavg: 0.21 0.06 0.06 1/115 1365] [ 5059.436052] Hardware name: /D510MO, BIOS MOPNV10J.86A.0175.2010.0308.0620 03/08/2010 [ 5059.436223] 0000000000000002 ffff88007e203ad8 ffffffff8153a372 ffff8800677130e0 [ 5059.436390] ffff88007e203b10 ffffffff8108cafa ffff88005e960000 ffff88007b00cfc0 [ 5059.436554] ffffea00017a5800 ffffffff8141c490 0000000000000246 ffff88007e203b48 [ 5059.436718] Call Trace: [ 5059.436769] <IRQ> [<ffffffff8153a372>] dump_stack+0x4d/0x66 [ 5059.436904] [<ffffffff8108cafa>] debug_check_no_locks_freed+0x15a/0x160 [ 5059.437037] [<ffffffff8141c490>] ? __sk_free+0x110/0x230 [ 5059.437147] [<ffffffff8112da2a>] kmem_cache_free+0x6a/0x150 [ 5059.437260] [<ffffffff8141c490>] __sk_free+0x110/0x230 [ 5059.437364] [<ffffffff8141c5c9>] sk_free+0x19/0x20 [ 5059.437463] [<ffffffff8141cb25>] sock_edemux+0x25/0x40 [ 5059.437567] [<ffffffff8141c181>] sock_queue_rcv_skb+0x81/0x280 [ 5059.437685] [<ffffffff8149bd21>] ? udp_queue_rcv_skb+0xd1/0x4b0 [ 5059.437805] [<ffffffff81499c82>] __udp_queue_rcv_skb+0x42/0x240 [ 5059.437925] [<ffffffff81541d25>] ? _raw_spin_lock+0x65/0x70 [ 5059.438038] [<ffffffff8149bebb>] udp_queue_rcv_skb+0x26b/0x4b0 [ 5059.438155] [<ffffffff8149c712>] __udp4_lib_rcv+0x152/0xb00 [ 5059.438269] [<ffffffff8149d7f5>] udp_rcv+0x15/0x20 [ 5059.438367] [<ffffffff81467b2f>] ip_local_deliver_finish+0x10f/0x410 [ 5059.438492] [<ffffffff81467a5e>] ? ip_local_deliver_finish+0x3e/0x410 [ 5059.438621] [<ffffffff81468653>] ip_local_deliver+0x43/0x80 [ 5059.438733] [<ffffffff81467f70>] ip_rcv_finish+0x140/0x5a0 [ 5059.438843] [<ffffffff81468926>] ip_rcv+0x296/0x3f0 [ 5059.438945] [<ffffffff81430b72>] __netif_receive_skb_core+0x742/0x940 [ 5059.439074] [<ffffffff8143054d>] ? __netif_receive_skb_core+0x11d/0x940 [ 5059.442231] [<ffffffff8108c81d>] ? trace_hardirqs_on+0xd/0x10 [ 5059.442231] [<ffffffff81430d83>] __netif_receive_skb+0x13/0x60 [ 5059.442231] [<ffffffff81431c1e>] netif_receive_skb+0x1e/0x1f0 [ 5059.442231] [<ffffffff814334e0>] napi_gro_receive+0x70/0xa0 [ 5059.442231] [<ffffffffa01de426>] rtl8169_poll+0x166/0x700 [r8169] [ 5059.442231] [<ffffffff81432bc9>] net_rx_action+0x129/0x1e0 [ 5059.442231] [<ffffffff810478cd>] __do_softirq+0xed/0x240 [ 5059.442231] [<ffffffff81047e25>] irq_exit+0x125/0x140 [ 5059.442231] [<ffffffff81004241>] do_IRQ+0x51/0xc0 [ 5059.442231] [<ffffffff81542bef>] common_interrupt+0x6f/0x6f We need to keep a reference on the socket, by using skb_steal_sock() at the right place. Note that another patch is needed to fix a race in udp_sk_rx_dst_set(), as we hold no lock protecting the dst. Fixes: 421b3885bf6d ("udp: ipv4: Add udp early demux") Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Shawn Bohrer <sbohrer@rgmadvisors.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sctp: fix up a spacingwangweidong2013-12-10
| | | | | | | | | | | | | | | | | | | | fix up spacing of proc_sctp_do_hmac_alg for according to the proc_sctp_do_rto_min[max] in sysctl.c Suggested-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Wang Weidong <wangweidong1@huawei.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sctp: add check rto_min and rto_max in sysctlwangweidong2013-12-10
| | | | | | | | | | | | | | | | | | | | rto_min should be smaller than rto_max while rto_max should be larger than rto_min. Add two proc_handler for the checking. Suggested-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: Wang Weidong <wangweidong1@huawei.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sctp: check the rto_min and rto_max in setsockoptwangweidong2013-12-10
| | | | | | | | | | | | | | | | | | | | When we set 0 to rto_min or rto_max, just not change the value. Also we should check the rto_min > rto_max. Suggested-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: Wang Weidong <wangweidong1@huawei.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ipv6: do not erase dst address with flow label destinationFlorent Fourcot2013-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is following b579035ff766c9412e2b92abf5cab794bff102b6 "ipv6: remove old conditions on flow label sharing" Since there is no reason to restrict a label to a destination, we should not erase the destination value of a socket with the value contained in the flow label storage. This patch allows to really have the same flow label to more than one destination. Signed-off-by: Florent Fourcot <florent.fourcot@enst-bretagne.fr> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * sctp: properly latch and use autoclose value from sock to associationNeil Horman2013-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, sctp associations latch a sockets autoclose value to an association at association init time, subject to capping constraints from the max_autoclose sysctl value. This leads to an odd situation where an application may set a socket level autoclose timeout, but sliently sctp will limit the autoclose timeout to something less than that. Fix this by modifying the autoclose setsockopt function to check the limit, cap it and warn the user via syslog that the timeout is capped. This will allow getsockopt to return valid autoclose timeout values that reflect what subsequent associations actually use. While were at it, also elimintate the assoc->autoclose variable, it duplicates whats in the timeout array, which leads to multiple sources for the same information, that may differ (as the former isn't subject to any capping). This gives us the timeout information in a canonical place and saves some space in the association structure as well. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> CC: Wang Weidong <wangweidong1@huawei.com> CC: David Miller <davem@davemloft.net> CC: Vlad Yasevich <vyasevich@gmail.com> CC: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
| * tipc: protect handler_enabled variable with qitem_lock spin lockYing Xue2013-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'handler_enabled' is a global flag indicating whether the TIPC signal handling service is enabled or not. The lack of lock protection for this flag incurs a risk for contention, so that a tipc_k_signal() call might queue a signal handler to a destroyed signal queue, with unpredictable results. To correct this, we let the already existing 'qitem_lock' protect the flag, as it already does with the queue itself. This way, we ensure that the flag always is consistent across all cores. Signed-off-by: Ying Xue <ying.xue@windriver.com> Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * tipc: correct the order of stopping services at rmmodJon Paul Maloy2013-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'signal handler' service in TIPC is a mechanism that makes it possible to postpone execution of functions, by launcing them into a job queue for execution in a separate tasklet, independent of the launching execution thread. When we do rmmod on the tipc module, this service is stopped after the network service. At the same time, the stopping of the network service may itself launch jobs for execution, with the risk that these functions may be scheduled for execution after the data structures meant to be accessed by the job have already been deleted. We have seen this happen, most often resulting in an oops. This commit ensures that the signal handler is the very first to be stopped when TIPC is shut down, so there are no surprises during the cleanup of the other services. Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: unix: allow set_peek_off to failSasha Levin2013-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | unix_dgram_recvmsg() will hold the readlock of the socket until recv is complete. In the same time, we may try to setsockopt(SO_PEEK_OFF) which will hang until unix_dgram_recvmsg() will complete (which can take a while) without allowing us to break out of it, triggering a hung task spew. Instead, allow set_peek_off to fail, this way userspace will not hang. Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * inet: fix NULL pointer Oops in fib(6)_rule_suppressStefan Tomanek2013-12-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This changes ensures that the routing entry investigated by the suppress function actually does point to a device struct before following that pointer, fixing a possible kernel oops situation when verifying the interface group associated with a routing table entry. According to Daniel Golle, this Oops can be triggered by a user process trying to establish an outgoing IPv6 connection while having no real IPv6 connectivity set up (only autoassigned link-local addresses). Fixes: 6ef94cfafba15 ("fib_rules: add route suppression based on ifgroup") Reported-by: Daniel Golle <daniel.golle@gmail.com> Tested-by: Daniel Golle <daniel.golle@gmail.com> Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: drop_monitor: fix the value of maxattrChangli Gao2013-12-09
| | | | | | | | | | | | | | | | maxattr in genl_family should be used to save the max attribute type, but not the max command type. Drop monitor doesn't support any attributes, so we should leave it as zero. Signed-off-by: David S. Miller <davem@davemloft.net>
| * ipv6: don't count addrconf generated routes against gc limitHannes Frederic Sowa2013-12-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Brett Ciphery reported that new ipv6 addresses failed to get installed because the addrconf generated dsts where counted against the dst gc limit. We don't need to count those routes like we currently don't count administratively added routes. Because the max_addresses check enforces a limit on unbounded address generation first in case someone plays with router advertisments, we are still safe here. Reported-by: Brett Ciphery <brett.ciphery@windriver.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller2013-12-09
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== The following patchset contains three Netfilter fixes for your net tree, they are: * fix incorrect comparison in the new netnet hash ipset type, from Dave Jones. * fix splat in hashlimit due to missing removal of the content of its proc entry in netnamespaces, from Sergey Popovich. * fix missing rule flushing operation by table in nf_tables. Table flushing was already discussed back in October but this got lost and no patch has hit the tree to address this issue so far, from me. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * netfilter: nf_tables: fix missing rules flushing per tablePablo Neira Ayuso2013-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch allows you to atomically remove all rules stored in a table via the NFT_MSG_DELRULE command. You only need to indicate the specific table and no chain to flush all rules stored in that table. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: xt_hashlimit: fix proc entry leak in netns destroy pathSergey Popovich2013-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In (32263dd1b netfilter: xt_hashlimit: fix namespace destroy path) the hashlimit_net_exit() function is always called right before hashlimit_mt_destroy() to release netns data. If you use xt_hashlimit with IPv4 and IPv6 together, this produces the following splat via netconsole in the netns destroy path: Pid: 9499, comm: kworker/u:0 Tainted: G WC O 3.2.0-5-netctl-amd64-core2 Call Trace: [<ffffffff8104708d>] ? warn_slowpath_common+0x78/0x8c [<ffffffff81047139>] ? warn_slowpath_fmt+0x45/0x4a [<ffffffff81144a99>] ? remove_proc_entry+0xd8/0x22e [<ffffffff810ebbaa>] ? kfree+0x5b/0x6c [<ffffffffa043c501>] ? hashlimit_net_exit+0x45/0x8d [xt_hashlimit] [<ffffffff8128ab30>] ? ops_exit_list+0x1c/0x44 [<ffffffff8128b28e>] ? cleanup_net+0xf1/0x180 [<ffffffff810369fc>] ? should_resched+0x5/0x23 [<ffffffff8105b8f9>] ? process_one_work+0x161/0x269 [<ffffffff8105aea5>] ? cwq_activate_delayed_work+0x3c/0x48 [<ffffffff8105c8c2>] ? worker_thread+0xc2/0x145 [<ffffffff8105c800>] ? manage_workers.isra.25+0x15b/0x15b [<ffffffff8105fa01>] ? kthread+0x76/0x7e [<ffffffff813581f4>] ? kernel_thread_helper+0x4/0x10 [<ffffffff8105f98b>] ? kthread_worker_fn+0x139/0x139 [<ffffffff813581f0>] ? gs_change+0x13/0x13 ---[ end trace d8c3cc0ad163ef79 ]--- ------------[ cut here ]------------ WARNING: at /usr/src/linux-3.2.52/debian/build/source_netctl/fs/proc/generic.c:849 remove_proc_entry+0x217/0x22e() Hardware name: remove_proc_entry: removing non-empty directory 'net/ip6t_hashlimit', leaking at least 'IN-REJECT' This is due to lack of removal net/ip6t_hashlimit/* entries in hashlimit_proc_net_exit(), since only IPv4 entries are deleted. Fix it by always removing the IPv4 and IPv6 entries and their parent directories in the netns destroy path. Signed-off-by: Sergey Popovich <popovich_sergei@mail.ru> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * netfilter: ipset: fix incorret comparison in hash_netnet4_data_equal()Dave Jones2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | Both sides of the comparison are the same, looks like a cut-and-paste error. Spotted by Coverity. Signed-off-by: Dave Jones <davej@fedoraproject.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * | packet: fix send path when running with proto == 0Daniel Borkmann2013-12-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit e40526cb20b5 introduced a cached dev pointer, that gets hooked into register_prot_hook(), __unregister_prot_hook() to update the device used for the send path. We need to fix this up, as otherwise this will not work with sockets created with protocol = 0, plus with sll_protocol = 0 passed via sockaddr_ll when doing the bind. So instead, assign the pointer directly. The compiler can inline these helper functions automagically. While at it, also assume the cached dev fast-path as likely(), and document this variant of socket creation as it seems it is not widely used (seems not even the author of TX_RING was aware of that in his reference example [1]). Tested with reproducer from e40526cb20b5. [1] http://wiki.ipxwarzone.com/index.php5?title=Linux_packet_mmap#Example Fixes: e40526cb20b5 ("packet: fix use after free race in send path when dev is released") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Tested-by: Salam Noureddine <noureddine@aristanetworks.com> Tested-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | br: fix use of ->rx_handler_data in code executed on non-rx_handler pathJiri Pirko2013-12-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | br_stp_rcv() is reached by non-rx_handler path. That means there is no guarantee that dev is bridge port and therefore simple NULL check of ->rx_handler_data is not enough. There is need to check if dev is really bridge port and since only rcu read lock is held here, do it by checking ->rx_handler pointer. Note that synchronize_net() in netdev_rx_handler_unregister() ensures this approach as valid. Introduced originally by: commit f350a0a87374418635689471606454abc7beaa3a "bridge: use rx_handler_data pointer to store net_bridge_port pointer" Fixed but not in the best way by: commit b5ed54e94d324f17c97852296d61a143f01b227a "bridge: fix RCU races with bridge port" Reintroduced by: commit 716ec052d2280d511e10e90ad54a86f5b5d4dcc2 "bridge: fix NULL pointer deref of br_port_get_rcu" Please apply to stable trees as well. Thanks. RH bugzilla reference: https://bugzilla.redhat.com/show_bug.cgi?id=1025770 Reported-by: Laine Stump <laine@redhat.com> Debugged-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: clear local_df when passing skb between namespacesHannes Frederic Sowa2013-12-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We must clear local_df when passing the skb between namespaces as the packet is not local to the new namespace any more and thus may not get fragmented by local rules. Fred Templin noticed that other namespaces do fragment IPv6 packets while forwarding. Instead they should have send back a PTB. The same problem should be present when forwarding DF-IPv4 packets between namespaces. Reported-by: Templin, Fred L <Fred.L.Templin@boeing.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | tcp_memcontrol: Cleanup/fix cg_proto->memory_pressure handling.Eric W. Biederman2013-12-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kill memcg_tcp_enter_memory_pressure. The only function of memcg_tcp_enter_memory_pressure was to reduce deal with the unnecessary abstraction that was tcp_memcontrol. Now that struct tcp_memcontrol is gone remove this unnecessary function, the unnecessary function pointer, and modify sk_enter_memory_pressure to set this field directly, just as sk_leave_memory_pressure cleas this field directly. This fixes a small bug I intruduced when killing struct tcp_memcontrol that caused memcg_tcp_enter_memory_pressure to never be called and thus failed to ever set cg_proto->memory_pressure. Remove the cg_proto enter_memory_pressure function as it now serves no useful purpose. Don't test cg_proto->memory_presser in sk_leave_memory_pressure before clearing it. The test was originally there to ensure that the pointer was non-NULL. Now that cg_proto is not a pointer the pointer does not matter. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | sctp: disable max_burst when the max_burst is 0wangweidong2013-12-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As Michael pointed out that when max_burst is 0, it just disable max_burst. It declared in rfc6458#section-8.1.24. so add the check in sctp_transport_burst_limited, when it 0, just do nothing. Reviewed-by: Daniel Borkmann <dborkman@redhat.com> Suggested-by: Vlad Yasevich <vyasevich@gmail.com> Suggested-by: Michael Tuexen <Michael.Tuexen@lurchi.franken.de> Signed-off-by: Wang Weidong <wangweidong1@huawei.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net_sched: Use default action walker methodsJamal Hadi Salim2013-12-05
| | | | | | | | | | | | | | | Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net_sched: Provide default walker function for actionsJamal Hadi Salim2013-12-05
| | | | | | | | | | | | | | | Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net_sched: Use default action lookup functionsJamal Hadi Salim2013-12-05
| | | | | | | | | | | | | | | Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net_sched: Default action lookup method for actionsJamal Hadi Salim2013-12-05
| | | | | | | | | | | | | | | Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net_sched: Fail if missing mandatory action operation methodsJamal Hadi Salim2013-12-05
| | | | | | | | | | | | | | | Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | Merge branch 'master' of ↵John W. Linville2013-12-05
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
| | * \ Merge branch 'for-john' of ↵John W. Linville2013-12-02
| | |\ \ | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
| | | * | mac80211: check csa wiphy flag in ibss before switchingSimon Wunderlich2013-12-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When external CSA IEs are received (beacons or action messages), a channel switch is triggered as well. This should only be allowed on devices which actually support channel switches, otherwise disconnect. (For the corresponding userspace invocation, the wiphy flag is checked in nl80211). Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | | * | cfg80211: disable CSA for all driversSimon Wunderlich2013-12-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The channel switch announcement code has some major locking problems which can cause a deadlock in worst case. A series of fixes has been proposed, but these are non-trivial and need to be tested first. Therefore disable CSA completely for 3.13. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * | | Merge branch 'for-john' of ↵John W. Linville2013-11-25
| | |\| | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
| | | * | mac80211: set hw initial idle stateKarl Beldan2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ATM, the first call of ieee80211_do_open will configure the hw as non-idle, even if the interface being brought up is not a monitor, and this leads to inconsistent sequences like: register_hw() do_open(sta) hw_config(non-idle) (.. sta is non-idle ..) scan(sta) hw_config(idle) (after scan finishes) do_stop(sta) do_open(sta) (.. sta is idle ..) Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | | * | mac80211: use capped prob when computing throughputsKarl Beldan2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 3e8b1eb "mac80211/minstrel_ht: improve rate selection stability" introduced a local capped prob in minstrel_ht_calc_tp but omitted to use it to compute the per rate throughput. Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com> Cc: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | | * | cfg80211: ignore supported rates for nonexistant bands on scanFelix Fietkau2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes wpa_supplicant p2p_find on 5GHz-only devices Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | | * | mac80211: fix connection pollingEliad Peller2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 392b9ff ("mac80211: change beacon/connection polling") removed the IEEE80211_STA_BEACON_POLL flag. However, it accidentally removed the setting of IEEE80211_STA_CONNECTION_POLL, making the connection polling completely useless (the flag is always clear, so the result is never being checked). Fix it. Signed-off-by: Eliad Peller <eliad@wizery.com> Acked-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | | * | mac80211: fix the mesh channel switch supportChun-Yeow Yeoh2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mesh STA receiving the mesh CSA action frame is not able to trigger the mesh channel switch due to the incorrect handling and comparison of mesh channel switch parameters element (MCSP)'s TTL. Make sure the MCSP's TTL is updated accordingly before calling the ieee80211_mesh_process_chnswitch. Also, we update the beacon before forwarding the CSA action frame, so MCSP's precedence value and initiator flag need to be updated prior to this. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | | * | mac80211: don't attempt to reorder multicast framesJohannes Berg2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Multicast frames can't be transmitted as part of an aggregation session (such a session couldn't even be set up) so don't try to reorder them. Trying to do so would cause the reorder to stop working correctly since multicast QoS frames (as transmitted by the Aruba APs this was found with) would cause sequence number confusion in the buffer. Cc: stable@vger.kernel.org Reported-by: Blaise Gassend <blaise@suitabletech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-02 04:00:24 -0500