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2012-04-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Fix bluetooth userland regression reported by Keith Packard, from Gustavo Padovan. 2) Revert ath9k PS idle change, from Sujith Manoharan. 3) Correct default TCP memory limits (again), from Eric Dumazet. 4) Fix tcp_rcv_rtt_update() accidental use of unscaled RTT, from Neal Cardwell. 5) We made a facility for layers like wireless to say how much tailroom they need in the SKB for link layer stuff such as wireless encryption etc., but TCP works hard to fill every SKB out to the end defeating this specification. This leads to every TCP packet getting reallocated by the wireless code in order to have the right amount of tailroom available. Fix TCP to only fill SKBs out to the real amount of data area it asked for during the allocation, this way it won't eat into the slack added for the device's tailroom needs. Reported by Marc Merlin and fixed by Eric Dumazet. 6) Leaks, endian bugs, and new device IDs in bluetooth from Santosh Nayak, João Paulo Rechi Vita, Cho, Yu-Chen, Andrei Emeltchenko, AceLan Kao, and Andrei Emeltchenko. 7) OOPS on tty_close fix in bluetooth's hci_ldisc from Johan Hovold. 8) netfilter erroneously scales TCP window twice, fix from Changli Gao. 9) Memleak fix in wext-core from Julia Lawall. 10) Consistently handle invalid TCP packets in ipv4 vs. ipv6 conntrack, from Jozsef Kadlecsik. 11) Validate IP header length properly in netfilter conntrack's ipv4_get_l4proto(). * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (39 commits) NFC: Fix the LLCP Tx fragmentation loop rtlwifi: Add missing DMA buffer unmapping for PCI drivers rtlwifi: Preallocate USB read buffers and eliminate kalloc in read routine tcp: avoid order-1 allocations on wifi and tx path net: allow pskb_expand_head() to get maximum tailroom bridge: Do not send queries on multicast group leaves MAINTAINERS: Mark NATSEMI driver as orphan'd. tcp: fix tcp_rcv_rtt_update() use of an unscaled RTT sample tcp: restore correct limit Revert "ath9k: fix going to full-sleep on PS idle" rt2x00: Fix rfkill_polling register function. bcma: fix build error on MIPS; implicit pcibios_enable_device netfilter: nf_conntrack: fix incorrect logic in nf_conntrack_init_net netfilter: nf_ct_ipv4: packets with wrong ihl are invalid netfilter: nf_ct_ipv4: handle invalid IPv4 and IPv6 packets consistently net/wireless/wext-core.c: add missing kfree rtlwifi: Fix oops on rate-control failure mac80211: Convert WARN_ON to WARN_ON_ONCE rtlwifi: rtl8192de: Fix firmware initialization nl80211: ensure interface is up in various APIs ...
2012-04-12Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2012-04-11NFC: Fix the LLCP Tx fragmentation loopSamuel Ortiz
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-11tcp: avoid order-1 allocations on wifi and tx pathEric Dumazet
Marc Merlin reported many order-1 allocations failures in TX path on its wireless setup, that dont make any sense with MTU=1500 network, and non SG capable hardware. After investigation, it turns out TCP uses sk_stream_alloc_skb() and used as a convention skb_tailroom(skb) to know how many bytes of data payload could be put in this skb (for non SG capable devices) Note : these skb used kmalloc-4096 (MTU=1500 + MAX_HEADER + sizeof(struct skb_shared_info) being above 2048) Later, mac80211 layer need to add some bytes at the tail of skb (IEEE80211_ENCRYPT_TAILROOM = 18 bytes) and since no more tailroom is available has to call pskb_expand_head() and request order-1 allocations. This patch changes sk_stream_alloc_skb() so that only sk->sk_prot->max_header bytes of headroom are reserved, and use a new skb field, avail_size to hold the data payload limit. This way, order-0 allocations done by TCP stack can leave more than 2 KB of tailroom and no more allocation is performed in mac80211 layer (or any layer needing some tailroom) avail_size is unioned with mark/dropcount, since mark will be set later in IP stack for output packets. Therefore, skb size is unchanged. Reported-by: Marc MERLIN <marc@merlins.org> Tested-by: Marc MERLIN <marc@merlins.org> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-11net: allow pskb_expand_head() to get maximum tailroomEric Dumazet
Marc Merlin reported many order-1 allocations failures in TX path on its wireless setup, that dont make any sense with MTU=1500 network, and non SG capable hardware. Turns out part of the problem comes from pskb_expand_head() not using ksize() to get exact head size given by kmalloc(). Doing the same thing than __alloc_skb() allows more tailroom in skb and can prevent future reallocations. As a bonus, struct skb_shared_info becomes cache line aligned. Reported-by: Marc MERLIN <marc@merlins.org> Tested-by: Marc MERLIN <marc@merlins.org> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-11bridge: Do not send queries on multicast group leavesHerbert Xu
As it stands the bridge IGMP snooping system will respond to group leave messages with queries for remaining membership. This is both unnecessary and undesirable. First of all any multicast routers present should be doing this rather than us. What's more the queries that we send may end up upsetting other multicast snooping swithces in the system that are buggy. In fact, we can simply remove the code that send these queries because the existing membership expiry mechanism doesn't rely on them anyway. So this patch simply removes all code associated with group queries in response to group leave messages. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-10Merge tag 'dmaengine-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine Pull dmaengine fixes from Dan Williams: 1/ regression fix for Xen as it now trips over a broken assumption about the dma address size on 32-bit builds 2/ new quirk for netdma to ignore dma channels that cannot meet netdma alignment requirements 3/ fixes for two long standing issues in ioatdma (ring size overflow) and iop-adma (potential stack corruption) * tag 'dmaengine-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine: netdma: adding alignment check for NETDMA ops ioatdma: DMA copy alignment needed to address IOAT DMA silicon errata ioat: ring size variables need to be 32bit to avoid overflow iop-adma: Corrected array overflow in RAID6 Xscale(R) test. ioat: fix size of 'completion' for Xen
2012-04-10tcp: fix tcp_rcv_rtt_update() use of an unscaled RTT sampleNeal Cardwell
Fix a code path in tcp_rcv_rtt_update() that was comparing scaled and unscaled RTT samples. The intent in the code was to only use the 'm' measurement if it was a new minimum. However, since 'm' had not yet been shifted left 3 bits but 'new_sample' had, this comparison would nearly always succeed, leading us to erroneously set our receive-side RTT estimate to the 'm' sample when that sample could be nearly 8x too high to use. The overall effect is to often cause the receive-side RTT estimate to be significantly too large (up to 40% too large for brief periods in my tests). Signed-off-by: Neal Cardwell <ncardwell@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-10tcp: restore correct limitEric Dumazet
Commit c43b874d5d714f (tcp: properly initialize tcp memory limits) tried to fix a regression added in commits 4acb4190 & 3dc43e3, but still get it wrong. Result is machines with low amount of memory have too small tcp_rmem[2] value and slow tcp receives : Per socket limit being 1/1024 of memory instead of 1/128 in old kernels, so rcv window is capped to small values. Fix this to match comment and previous behavior. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Glauber Costa <glommer@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-10Merge branch 'master' of git://1984.lsi.us.es/netDavid S. Miller
2012-04-10netfilter: nf_conntrack: fix incorrect logic in nf_conntrack_init_netGao feng
in function nf_conntrack_init_net,when nf_conntrack_timeout_init falied, we should call nf_conntrack_ecache_fini to do rollback. but the current code calls nf_conntrack_timeout_fini. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-10netfilter: nf_ct_ipv4: packets with wrong ihl are invalidJozsef Kadlecsik
It was reported that the Linux kernel sometimes logs: klogd: [2629147.402413] kernel BUG at net / netfilter / nf_conntrack_proto_tcp.c: 447! klogd: [1072212.887368] kernel BUG at net / netfilter / nf_conntrack_proto_tcp.c: 392 ipv4_get_l4proto() in nf_conntrack_l3proto_ipv4.c and tcp_error() in nf_conntrack_proto_tcp.c should catch malformed packets, so the errors at the indicated lines - TCP options parsing - should not happen. However, tcp_error() relies on the "dataoff" offset to the TCP header, calculated by ipv4_get_l4proto(). But ipv4_get_l4proto() does not check bogus ihl values in IPv4 packets, which then can slip through tcp_error() and get caught at the TCP options parsing routines. The patch fixes ipv4_get_l4proto() by invalidating packets with bogus ihl value. The patch closes netfilter bugzilla id 771. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-10netfilter: nf_ct_ipv4: handle invalid IPv4 and IPv6 packets consistentlyJozsef Kadlecsik
IPv6 conntrack marked invalid packets as INVALID and let the user drop those by an explicit rule, while IPv4 conntrack dropped such packets itself. IPv4 conntrack is changed so that it marks INVALID packets and let the user to drop them. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-09net/wireless/wext-core.c: add missing kfreeJulia Lawall
Free extra as done in the error-handling code just above. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-09nl80211: ensure interface is up in various APIsJohannes Berg
The nl80211 handling code should ensure as much as it can that the interface is in a valid state, it can certainly ensure the interface is running. Not doing so can cause calls through mac80211 into the driver that result in warnings and unspecified behaviour in the driver. Cc: stable@vger.kernel.org Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-09mac80211: fix association beacon wait timeoutJohannes Berg
The TU_TO_EXP_TIME() macro already includes the "jiffies +" piece of the calculation, so don't add jiffies again. Reported-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Tested-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-04-09Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
2012-04-09netfilter: ip6_tables: ip6t_ext_hdr is now static inlinePablo Neira Ayuso
We may hit this in xt_LOG: net/built-in.o:xt_LOG.c:function dump_ipv6_packet: error: undefined reference to 'ip6t_ext_hdr' happens with these config options: CONFIG_NETFILTER_XT_TARGET_LOG=y CONFIG_IP6_NF_IPTABLES=m ip6t_ext_hdr is fairly small and it is called in the packet path. Make it static inline. Reported-by: Simon Kirby <sim@netnation.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-09netfilter: nf_ct_tcp: don't scale the size of the window up twiceChangli Gao
For a picked up connection, the window win is scaled twice: one is by the initialization code, and the other is by the sender updating code. I use the temporary variable swin instead of modifying the variable win. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking updates from David Miller: 1) Fix inaccuracies in network driver interface documentation, from Ben Hutchings. 2) Fix handling of negative offsets in BPF JITs, from Jan Seiffert. 3) Compile warning, locking, and refcounting fixes in netfilter's xt_CT, from Pablo Neira Ayuso. 4) phonet sendmsg needs to validate user length just like any other datagram protocol, fix from Sasha Levin. 5) Ipv6 multicast code uses wrong loop index, from RongQing Li. 6) Link handling and firmware fixes in bnx2x driver from Yaniv Rosner and Yuval Mintz. 7) mlx4 erroneously allocates 4 pages at a time, regardless of page size, fix from Thadeu Lima de Souza Cascardo. 8) SCTP socket option wasn't extended in a backwards compatible way, fix from Thomas Graf. 9) Add missing address change event emissions to bonding, from Shlomo Pongratz. 10) /proc/net/dev regressed because it uses a private offset to track where we are in the hash table, but this doesn't track the offset pullback that the seq_file code does resulting in some entries being missed in large dumps. Fix from Eric Dumazet. 11) do_tcp_sendpage() unloads the send queue way too fast, because it invokes tcp_push() when it shouldn't. Let the natural sequence generated by the splice paths, and the assosciated MSG_MORE settings, guide the tcp_push() calls. Otherwise what goes out of TCP is spaghetti and doesn't batch effectively into GSO/TSO clusters. From Eric Dumazet. 12) Once we put a SKB into either the netlink receiver's queue or a socket error queue, it can be consumed and freed up, therefore we cannot touch it after queueing it like that. Fixes from Eric Dumazet. 13) PPP has this annoying behavior in that for every transmit call it immediately stops the TX queue, then calls down into the next layer to transmit the PPP frame. But if that next layer can take it immediately, it just un-stops the TX queue right before returning from the transmit method. Besides being useless work, it makes several facilities unusable, in particular things like the equalizers. Well behaved devices should only stop the TX queue when they really are full, and in PPP's case when it gets backlogged to the downstream device. David Woodhouse therefore fixed PPP to not stop the TX queue until it's downstream can't take data any more. 14) IFF_UNICAST_FLT got accidently lost in some recent stmmac driver changes, re-add. From Marc Kleine-Budde. 15) Fix link flaps in ixgbe, from Eric W. Multanen. 16) Descriptor writeback fixes in e1000e from Matthew Vick. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits) net: fix a race in sock_queue_err_skb() netlink: fix races after skb queueing doc, net: Update ndo_start_xmit return type and values doc, net: Remove instruction to set net_device::trans_start doc, net: Update netdev operation names doc, net: Update documentation of synchronisation for TX multiqueue doc, net: Remove obsolete reference to dev->poll ethtool: Remove exception to the requirement of holding RTNL lock MAINTAINERS: update for Marvell Ethernet drivers bonding: properly unset current_arp_slave on slave link up phonet: Check input from user before allocating tcp: tcp_sendpages() should call tcp_push() once ipv6: fix array index in ip6_mc_add_src() mlx4: allocate just enough pages instead of always 4 pages stmmac: re-add IFF_UNICAST_FLT for dwmac1000 bnx2x: Clear MDC/MDIO warning message bnx2x: Fix BCM57711+BCM84823 link issue bnx2x: Clear BCM84833 LED after fan failure bnx2x: Fix BCM84833 PHY FW version presentation bnx2x: Fix link issue for BCM8727 boards. ...
2012-04-06net: fix a race in sock_queue_err_skb()Eric Dumazet
As soon as an skb is queued into socket error queue, another thread can consume it, so we are not allowed to reference skb anymore, or risk use after free. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-06netlink: fix races after skb queueingEric Dumazet
As soon as an skb is queued into socket receive_queue, another thread can consume it, so we are not allowed to reference skb anymore, or risk use after free. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-05phonet: Check input from user before allocatingSasha Levin
A phonet packet is limited to USHRT_MAX bytes, this is never checked during tx which means that the user can specify any size he wishes, and the kernel will attempt to allocate that size. In the good case, it'll lead to the following warning, but it may also cause the kernel to kick in the OOM and kill a random task on the server. [ 8921.744094] WARNING: at mm/page_alloc.c:2255 __alloc_pages_slowpath+0x65/0x730() [ 8921.749770] Pid: 5081, comm: trinity Tainted: G W 3.4.0-rc1-next-20120402-sasha #46 [ 8921.756672] Call Trace: [ 8921.758185] [<ffffffff810b2ba7>] warn_slowpath_common+0x87/0xb0 [ 8921.762868] [<ffffffff810b2be5>] warn_slowpath_null+0x15/0x20 [ 8921.765399] [<ffffffff8117eae5>] __alloc_pages_slowpath+0x65/0x730 [ 8921.769226] [<ffffffff81179c8a>] ? zone_watermark_ok+0x1a/0x20 [ 8921.771686] [<ffffffff8117d045>] ? get_page_from_freelist+0x625/0x660 [ 8921.773919] [<ffffffff8117f3a8>] __alloc_pages_nodemask+0x1f8/0x240 [ 8921.776248] [<ffffffff811c03e0>] kmalloc_large_node+0x70/0xc0 [ 8921.778294] [<ffffffff811c4bd4>] __kmalloc_node_track_caller+0x34/0x1c0 [ 8921.780847] [<ffffffff821b0e3c>] ? sock_alloc_send_pskb+0xbc/0x260 [ 8921.783179] [<ffffffff821b3c65>] __alloc_skb+0x75/0x170 [ 8921.784971] [<ffffffff821b0e3c>] sock_alloc_send_pskb+0xbc/0x260 [ 8921.787111] [<ffffffff821b002e>] ? release_sock+0x7e/0x90 [ 8921.788973] [<ffffffff821b0ff0>] sock_alloc_send_skb+0x10/0x20 [ 8921.791052] [<ffffffff824cfc20>] pep_sendmsg+0x60/0x380 [ 8921.792931] [<ffffffff824cb4a6>] ? pn_socket_bind+0x156/0x180 [ 8921.794917] [<ffffffff824cb50f>] ? pn_socket_autobind+0x3f/0x90 [ 8921.797053] [<ffffffff824cb63f>] pn_socket_sendmsg+0x4f/0x70 [ 8921.798992] [<ffffffff821ab8e7>] sock_aio_write+0x187/0x1b0 [ 8921.801395] [<ffffffff810e325e>] ? sub_preempt_count+0xae/0xf0 [ 8921.803501] [<ffffffff8111842c>] ? __lock_acquire+0x42c/0x4b0 [ 8921.805505] [<ffffffff821ab760>] ? __sock_recv_ts_and_drops+0x140/0x140 [ 8921.807860] [<ffffffff811e07cc>] do_sync_readv_writev+0xbc/0x110 [ 8921.809986] [<ffffffff811958e7>] ? might_fault+0x97/0xa0 [ 8921.811998] [<ffffffff817bd99e>] ? security_file_permission+0x1e/0x90 [ 8921.814595] [<ffffffff811e17e2>] do_readv_writev+0xe2/0x1e0 [ 8921.816702] [<ffffffff810b8dac>] ? do_setitimer+0x1ac/0x200 [ 8921.818819] [<ffffffff810e2ec1>] ? get_parent_ip+0x11/0x50 [ 8921.820863] [<ffffffff810e325e>] ? sub_preempt_count+0xae/0xf0 [ 8921.823318] [<ffffffff811e1926>] vfs_writev+0x46/0x60 [ 8921.825219] [<ffffffff811e1a3f>] sys_writev+0x4f/0xb0 [ 8921.827127] [<ffffffff82658039>] system_call_fastpath+0x16/0x1b [ 8921.829384] ---[ end trace dffe390f30db9eb7 ]--- Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-05tcp: tcp_sendpages() should call tcp_push() onceEric Dumazet
commit 2f533844242 (tcp: allow splice() to build full TSO packets) added a regression for splice() calls using SPLICE_F_MORE. We need to call tcp_flush() at the end of the last page processed in tcp_sendpages(), or else transmits can be deferred and future sends stall. Add a new internal flag, MSG_SENDPAGE_NOTLAST, acting like MSG_MORE, but with different semantic. For all sendpage() providers, its a transparent change. Only sock_sendpage() and tcp_sendpages() can differentiate the two different flags provided by pipe_to_sendpage() Reported-by: Tom Herbert <therbert@google.com> Cc: Nandita Dukkipati <nanditad@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: H.K. Jerry Chu <hkchu@google.com> Cc: Maciej Żenczykowski <maze@google.com> Cc: Mahesh Bandewar <maheshb@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: Eric Dumazet <eric.dumazet@gmail>com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-05Merge branch 'akpm' (Andrew's patch-bomb)Linus Torvalds
Merge batch of fixes from Andrew Morton: "The simple_open() cleanup was held back while I wanted for laggards to merge things. I still need to send a few checkpoint/restore patches. I've been wobbly about merging them because I'm wobbly about the overall prospects for success of the project. But after speaking with Pavel at the LSF conference, it sounds like they're further toward completion than I feared - apparently davem is at the "has stopped complaining" stage regarding the net changes. So I need to go back and re-review those patchs and their (lengthy) discussion." * emailed from Andrew Morton <akpm@linux-foundation.org>: (16 patches) memcg swap: use mem_cgroup_uncharge_swap fix backlight: add driver for DA9052/53 PMIC v1 C6X: use set_current_blocked() and block_sigmask() MAINTAINERS: add entry for sparse checker MAINTAINERS: fix REMOTEPROC F: typo alpha: use set_current_blocked() and block_sigmask() simple_open: automatically convert to simple_open() scripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open() libfs: add simple_open() hugetlbfs: remove unregister_filesystem() when initializing module drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback fs/xattr.c:setxattr(): improve handling of allocation failures fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed fs/xattr.c: suppress page allocation failure warnings from sys_listxattr() sysrq: use SEND_SIG_FORCED instead of force_sig() proc: fix mount -t proc -o AAA
2012-04-05netdma: adding alignment check for NETDMA opsDave Jiang
This is the fallout from adding memcpy alignment workaround for certain IOATDMA hardware. NetDMA will only use DMA engine that can handle byte align ops. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-04-05simple_open: automatically convert to simple_open()Stephen Boyd
Many users of debugfs copy the implementation of default_open() when they want to support a custom read/write function op. This leads to a proliferation of the default_open() implementation across the entire tree. Now that the common implementation has been consolidated into libfs we can replace all the users of this function with simple_open(). This replacement was done with the following semantic patch: <smpl> @ open @ identifier open_f != simple_open; identifier i, f; @@ -int open_f(struct inode *i, struct file *f) -{ ( -if (i->i_private) -f->private_data = i->i_private; | -f->private_data = i->i_private; ) -return 0; -} @ has_open depends on open @ identifier fops; identifier open.open_f; @@ struct file_operations fops = { ... -.open = open_f, +.open = simple_open, ... }; </smpl> [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-05ipv6: fix array index in ip6_mc_add_src()RongQing.Li
Convert array index from the loop bound to the loop index. And remove the void type conversion to ip6_mc_del1_src() return code, seem it is unnecessary, since ip6_mc_del1_src() does not use __must_check similar attribute, no compiler will report the warning when it is removed. v2: enrich the commit header Signed-off-by: RongQing.Li <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-04sctp: Allow struct sctp_event_subscribe to grow without breaking binariesThomas Graf
getsockopt(..., SCTP_EVENTS, ...) performs a length check and returns an error if the user provides less bytes than the size of struct sctp_event_subscribe. Struct sctp_event_subscribe needs to be extended by an u8 for every new event or notification type that is added. This obviously makes getsockopt fail for binaries that are compiled against an older versions of <net/sctp/user.h> which do not contain all event types. This patch changes getsockopt behaviour to no longer return an error if not enough bytes are being provided by the user. Instead, it returns as much of sctp_event_subscribe as fits into the provided buffer. This leads to the new behavior that users see what they have been aware of at compile time. The setsockopt(..., SCTP_EVENTS, ...) API is already behaving like this. Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-03netfilter: nf_conntrack: fix count leak in error path of __nf_conntrack_allocPablo Neira Ayuso
We have to decrement the conntrack counter if we fail to access the zone extension. Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-03netfilter: xt_CT: fix missing put timeout object in error pathPablo Neira Ayuso
The error path misses putting the timeout object. This patch adds new function xt_ct_tg_timeout_put() to put the timeout object. Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-03netfilter: xt_CT: allocation has to be GFP_ATOMIC under rcu_read_lock sectionPablo Neira Ayuso
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-03Merge branch 'master' of git://1984.lsi.us.es/netDavid S. Miller
2012-04-03bpf jit: Make the filter.c::__load_pointer helper non-static for the jitsJan Seiffert
The function is renamed to make it a little more clear what it does. It is not added to any .h because it is not for general consumption, only for bpf internal use (and so by the jits). Signed-of-by: Jan Seiffert <kaffeemonster@googlemail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-03tcp: allow splice() to build full TSO packetsEric Dumazet
vmsplice()/splice(pipe, socket) call do_tcp_sendpages() one page at a time, adding at most 4096 bytes to an skb. (assuming PAGE_SIZE=4096) The call to tcp_push() at the end of do_tcp_sendpages() forces an immediate xmit when pipe is not already filled, and tso_fragment() try to split these skb to MSS multiples. 4096 bytes are usually split in a skb with 2 MSS, and a remaining sub-mss skb (assuming MTU=1500) This makes slow start suboptimal because many small frames are sent to qdisc/driver layers instead of big ones (constrained by cwnd and packets in flight of course) In fact, applications using sendmsg() (adding an additional memory copy) instead of vmsplice()/splice()/sendfile() are a bit faster because of this anomaly, especially if serving small files in environments with large initial [c]wnd. Call tcp_push() only if MSG_MORE is not set in the flags parameter. This bit is automatically provided by splice() internals but for the last page, or on all pages if user specified SPLICE_F_MORE splice() flag. In some workloads, this can reduce number of sent logical packets by an order of magnitude, making zero-copy TCP actually faster than one-copy :) Reported-by: Tom Herbert <therbert@google.com> Cc: Nandita Dukkipati <nanditad@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: H.K. Jerry Chu <hkchu@google.com> Cc: Maciej Żenczykowski <maze@google.com> Cc: Mahesh Bandewar <maheshb@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: Eric Dumazet <eric.dumazet@gmail>com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-03net: fix /proc/net/dev regressionEric Dumazet
Commit f04565ddf52 (dev: use name hash for dev_seq_ops) added a second regression, as some devices are missing from /proc/net/dev if many devices are defined. When seq_file buffer is filled, the last ->next/show() method is canceled (pos value is reverted to value prior ->next() call) Problem is after above commit, we dont restart the lookup at right position in ->start() method. Fix this by removing the internal 'pos' pointer added in commit, since we need to use the 'loff_t *pos' provided by seq_file layer. This also reverts commit 5cac98dd0 (net: Fix corruption in /proc/*/net/dev_mcast), since its not needed anymore. Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Mihai Maruseac <mmaruseac@ixiacom.com> Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-03netfilter: xt_CT: remove a compile warningPablo Neira Ayuso
If CONFIG_NF_CONNTRACK_TIMEOUT=n we have following warning : CC [M] net/netfilter/xt_CT.o net/netfilter/xt_CT.c: In function ‘xt_ct_tg_check_v1’: net/netfilter/xt_CT.c:284: warning: label ‘err4’ defined but not used Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Provide device string properly for USB i2400m wimax devices, also don't OOPS when providing firmware string. From Phil Sutter. 2) Add support for sh_eth SH7734 chips, from Nobuhiro Iwamatsu. 3) Add another device ID to USB zaurus driver, from Guan Xin. 4) Loop index start in pool vector iterator is wrong causing MAC to not get configured in bnx2x driver, fix from Dmitry Kravkov. 5) EQL driver assumes HZ=100, fix from Eric Dumazet. 6) Now that skb_add_rx_frag() can specify the truesize increment separately, do so in f_phonet and cdc_phonet, also from Eric Dumazet. 7) virtio_net accidently uses net_ratelimit() not only on the kernel warning but also the statistic bump, fix from Rick Jones. 8) ip_route_input_mc() uses fixed init_net namespace, oops, use dev_net(dev) instead. Fix from Benjamin LaHaise. 9) dev_forward_skb() needs to clear the incoming interface index of the SKB so that it looks like a new incoming packet, also from Benjamin LaHaise. 10) iwlwifi mistakenly initializes a channel entry as 2GHZ instead of 5GHZ, fix from Stanislav Yakovlev. 11) Missing kmalloc() return value checks in orinoco, from Santosh Nayak. 12) ath9k doesn't check for HT capabilities in the right way, it is checking ht_supported instead of the ATH9K_HW_CAP_HT flag. Fix from Sujith Manoharan. 13) Fix x86 BPF JIT emission of 16-bit immediate field of AND instructions, from Feiran Zhuang. 14) Avoid infinite loop in GARP code when registering sysfs entries. From David Ward. 15) rose protocol uses memcpy instead of memcmp in a device address comparison, oops. Fix from Daniel Borkmann. 16) Fix build of lpc_eth due to dev_hw_addr_rancom() interface being renamed to eth_hw_addr_random(). From Roland Stigge. 17) Make ipv6 RTM_GETROUTE interpret RTA_IIF attribute the same way that ipv4 does. Fix from Shmulik Ladkani. 18) via-rhine has an inverted bit test, causing suspend/resume regressions. Fix from Andreas Mohr. 19) RIONET assumes 4K page size, fix from Akinobu Mita. 20) Initialization of imask register in sky2 is buggy, because bits are "or'd" into an uninitialized local variable. Fix from Lino Sanfilippo. 21) Fix FCOE checksum offload handling, from Yi Zou. 22) Fix VLAN processing regression in e1000, from Jiri Pirko. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits) sky2: dont overwrite settings for PHY Quick link tg3: Fix 5717 serdes powerdown problem net: usb: cdc_eem: fix mtu net: sh_eth: fix endian check for architecture independent usb/rtl8150 : Remove duplicated definitions rionet: fix page allocation order of rionet_active via-rhine: fix wait-bit inversion. ipv6: Fix RTM_GETROUTE's interpretation of RTA_IIF to be consistent with ipv4 net: lpc_eth: Fix rename of dev_hw_addr_random net/netfilter/nfnetlink_acct.c: use linux/atomic.h rose_dev: fix memcpy-bug in rose_set_mac_address Fix non TBI PHY access; a bad merge undid bug fix in a previous commit. net/garp: avoid infinite loop if attribute already exists x86 bpf_jit: fix a bug in emitting the 16-bit immediate operand of AND bonding: emit event when bonding changes MAC mac80211: fix oper channel timestamp updation ath9k: Use HW HT capabilites properly MAINTAINERS: adding maintainer for ipw2x00 net: orinoco: add error handling for failed kmalloc(). net/wireless: ipw2x00: fix a typo in wiphy struct initilization ...
2012-04-01ipv6: Fix RTM_GETROUTE's interpretation of RTA_IIF to be consistent with ipv4Shmulik Ladkani
In IPv4, if an RTA_IIF attribute is specified within an RTM_GETROUTE message, then a route is searched as if a packet was received on the specified 'iif' interface. However in IPv6, RTA_IIF is not interpreted in the same way: 'inet6_rtm_getroute()' always calls 'ip6_route_output()', regardless the RTA_IIF attribute. As a result, in IPv6 there's no way to use RTM_GETROUTE in order to look for a route as if a packet was received on a specific interface. Fix 'inet6_rtm_getroute()' so that RTA_IIF is interpreted as "lookup a route as if a packet was received on the specified interface", similar to IPv4's 'inet_rtm_getroute()' interpretation. Reported-by: Ami Koren <amikoren@yahoo.com> Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-01net/netfilter/nfnetlink_acct.c: use linux/atomic.hAndrew Morton
There's no known problem here, but this is one of only two non-arch files in the kernel which use asm/atomic.h instead of linux/atomic.h. Acked-by: Pablo Neira Ayuso <pablo@netfilter.org> Cc: Patrick McHardy <kaber@trash.net> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-01rose_dev: fix memcpy-bug in rose_set_mac_addressdanborkmann@iogearbox.net
If both addresses equal, nothing needs to be done. If the device is down, then we simply copy the new address to dev->dev_addr. If the device is up, then we add another loopback device with the new address, and if that does not fail, we remove the loopback device with the old address. And only then, we update the dev->dev_addr. Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-01net/garp: avoid infinite loop if attribute already existsDavid Ward
An infinite loop occurred if garp_attr_create was called with the values of an existing attribute. This might happen if a previous leave request for the attribute has not yet been followed by a PDU transmission (or, if the application previously issued a join request for the attribute and is now issuing another one, without having issued a leave request). If garp_attr_create finds an existing attribute having the same values, return the address to it. Its state will then get updated (i.e., if it was in a leaving state, it will move into a non-leaving state and not get deleted during the next PDU transmission). To accomplish this fix, collapse garp_attr_insert into garp_attr_create (which is its only caller). Thanks to Jorge Boncompte [DTI2] <jorge@dti2.net> for contributing to this fix. Signed-off-by: David Ward <david.ward@ll.mit.edu> Acked-by: Jorge Boncompte [DTI2] <jorge@dti2.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-01Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2012-03-29Merge branch 'x86-x32-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x32 support for x86-64 from Ingo Molnar: "This tree introduces the X32 binary format and execution mode for x86: 32-bit data space binaries using 64-bit instructions and 64-bit kernel syscalls. This allows applications whose working set fits into a 32 bits address space to make use of 64-bit instructions while using a 32-bit address space with shorter pointers, more compressed data structures, etc." Fix up trivial context conflicts in arch/x86/{Kconfig,vdso/vma.c} * 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (71 commits) x32: Fix alignment fail in struct compat_siginfo x32: Fix stupid ia32/x32 inversion in the siginfo format x32: Add ptrace for x32 x32: Switch to a 64-bit clock_t x32: Provide separate is_ia32_task() and is_x32_task() predicates x86, mtrr: Use explicit sizing and padding for the 64-bit ioctls x86/x32: Fix the binutils auto-detect x32: Warn and disable rather than error if binutils too old x32: Only clear TIF_X32 flag once x32: Make sure TS_COMPAT is cleared for x32 tasks fs: Remove missed ->fds_bits from cessation use of fd_set structs internally fs: Fix close_on_exec pointer in alloc_fdtable x32: Drop non-__vdso weak symbols from the x32 VDSO x32: Fix coding style violations in the x32 VDSO code x32: Add x32 VDSO support x32: Allow x32 to be configured x32: If configured, add x32 system calls to system call tables x32: Handle process creation x32: Signal-related system calls x86: Add #ifdef CONFIG_COMPAT to <asm/sys_ia32.h> ...
2012-03-29Merge branch 'for-3.4' of git://linux-nfs.org/~bfields/linuxLinus Torvalds
Pull nfsd changes from Bruce Fields: Highlights: - Benny Halevy and Tigran Mkrtchyan implemented some more 4.1 features, moving us closer to a complete 4.1 implementation. - Bernd Schubert fixed a long-standing problem with readdir cookies on ext2/3/4. - Jeff Layton performed a long-overdue overhaul of the server reboot recovery code which will allow us to deprecate the current code (a rather unusual user of the vfs), and give us some needed flexibility for further improvements. - Like the client, we now support numeric uid's and gid's in the auth_sys case, allowing easier upgrades from NFSv2/v3 to v4.x. Plus miscellaneous bugfixes and cleanup. Thanks to everyone! There are also some delegation fixes waiting on vfs review that I suppose will have to wait for 3.5. With that done I think we'll finally turn off the "EXPERIMENTAL" dependency for v4 (though that's mostly symbolic as it's been on by default in distro's for a while). And the list of 4.1 todo's should be achievable for 3.5 as well: http://wiki.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues though we may still want a bit more experience with it before turning it on by default. * 'for-3.4' of git://linux-nfs.org/~bfields/linux: (55 commits) nfsd: only register cld pipe notifier when CONFIG_NFSD_V4 is enabled nfsd4: use auth_unix unconditionally on backchannel nfsd: fix NULL pointer dereference in cld_pipe_downcall nfsd4: memory corruption in numeric_name_to_id() sunrpc: skip portmap calls on sessions backchannel nfsd4: allow numeric idmapping nfsd: don't allow legacy client tracker init for anything but init_net nfsd: add notifier to handle mount/unmount of rpc_pipefs sb nfsd: add the infrastructure to handle the cld upcall nfsd: add a header describing upcall to nfsdcld nfsd: add a per-net-namespace struct for nfsd sunrpc: create nfsd dir in rpc_pipefs nfsd: add nfsd4_client_tracking_ops struct and a way to set it nfsd: convert nfs4_client->cl_cb_flags to a generic flags field NFSD: Fix nfs4_verifier memory alignment NFSD: Fix warnings when NFSD_DEBUG is not defined nfsd: vfs_llseek() with 32 or 64 bit offsets (hashes) nfsd: rename 'int access' to 'int may_flags' in nfsd_open() ext4: return 32/64-bit dir name hash according to usage type fs: add new FMODE flags: FMODE_32bithash and FMODE_64bithash ...
2012-03-28Merge tag 'nfs-for-3.4-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds
Pull NFS client bugfixes for Linux 3.4 from Trond Myklebust Highlights include: - Fix infinite loops in the mount code - Fix a userspace buffer overflow in __nfs4_get_acl_uncached - Fix a memory leak due to a double reference count in rpcb_getport_async() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> * tag 'nfs-for-3.4-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4: Minor cleanups for nfs4_handle_exception and nfs4_async_handle_error NFSv4.1: Fix layoutcommit error handling NFSv4: Fix two infinite loops in the mount code SUNRPC: Use the already looked-up xprt in rpcb_getport_async() NFS4.1: remove duplicate variable declaration in filelayout_clear_request_commit Fix length of buffer copied in __nfs4_get_acl_uncached
2012-03-28Merge tag 'split-asm_system_h-for-linus-20120328' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system Pull "Disintegrate and delete asm/system.h" from David Howells: "Here are a bunch of patches to disintegrate asm/system.h into a set of separate bits to relieve the problem of circular inclusion dependencies. I've built all the working defconfigs from all the arches that I can and made sure that they don't break. The reason for these patches is that I recently encountered a circular dependency problem that came about when I produced some patches to optimise get_order() by rewriting it to use ilog2(). This uses bitops - and on the SH arch asm/bitops.h drags in asm-generic/get_order.h by a circuituous route involving asm/system.h. The main difficulty seems to be asm/system.h. It holds a number of low level bits with no/few dependencies that are commonly used (eg. memory barriers) and a number of bits with more dependencies that aren't used in many places (eg. switch_to()). These patches break asm/system.h up into the following core pieces: (1) asm/barrier.h Move memory barriers here. This already done for MIPS and Alpha. (2) asm/switch_to.h Move switch_to() and related stuff here. (3) asm/exec.h Move arch_align_stack() here. Other process execution related bits could perhaps go here from asm/processor.h. (4) asm/cmpxchg.h Move xchg() and cmpxchg() here as they're full word atomic ops and frequently used by atomic_xchg() and atomic_cmpxchg(). (5) asm/bug.h Move die() and related bits. (6) asm/auxvec.h Move AT_VECTOR_SIZE_ARCH here. Other arch headers are created as needed on a per-arch basis." Fixed up some conflicts from other header file cleanups and moving code around that has happened in the meantime, so David's testing is somewhat weakened by that. We'll find out anything that got broken and fix it.. * tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits) Delete all instances of asm/system.h Remove all #inclusions of asm/system.h Add #includes needed to permit the removal of asm/system.h Move all declarations of free_initmem() to linux/mm.h Disintegrate asm/system.h for OpenRISC Split arch_align_stack() out from asm-generic/system.h Split the switch_to() wrapper out of asm-generic/system.h Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h Create asm-generic/barrier.h Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h Disintegrate asm/system.h for Xtensa Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] Disintegrate asm/system.h for Tile Disintegrate asm/system.h for Sparc Disintegrate asm/system.h for SH Disintegrate asm/system.h for Score Disintegrate asm/system.h for S390 Disintegrate asm/system.h for PowerPC Disintegrate asm/system.h for PA-RISC Disintegrate asm/system.h for MN10300 ...
2012-03-28mac80211: fix oper channel timestamp updationRajkumar Manoharan
Whenever the station informs the AP that it is about to leave the operating channel, the timestamp should be recorded. It is handled in scan resume but not in scan start. Fix that. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-28Bluetooth: mgmt: Add missing endian conversionAndrei Emeltchenko
Add missing endian conversion for page scan interval and window. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2012-03-28Bluetooth: mgmt: Fix corruption of device_connected pktBrian Gix
Incorrect pointer passed to eir_append_data made mgmt_device_connected event unparsable by mgmt user space entity. Signed-off-by: Brian Gix <bgix@codeaurora.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>