- Aug 07, 2014
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Dmitry Popov authored
Since a8afca03 (tcp: md5: protects md5sig_info with RCU) tcp_md5_do_lookup doesn't require socket lock, rcu_read_lock is enough. Therefore socket lock is no longer required for tcp_v{4,6}_inbound_md5_hash too, so we can move these calls (wrapped with rcu_read_{,un}lock) before bh_lock_sock: from tcp_v{4,6}_do_rcv to tcp_v{4,6}_rcv. Signed-off-by:
Dmitry Popov <ixaphire@qrator.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Francois Romieu authored
It must be tristate to avoid broken dependencies with kernel built-in usb network drivers when usb support is module only. When net config option is set, least surprize default should match usb. Wireless RNDIS USB driver used to select USB_USBNET. USB_USBNET now depends on USB_NET_DRIVERS so the latter should be selected as well. Signed-off-by:
Francois Romieu <romieu@fr.zoreil.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Pablo Neira authored
cb1ce2ef ("ipv6: Implement automatic flow label generation on transmit") accidentally uses socket option 64, which is already used by ip6tables: IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64 IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65 There is comment include/uapi/linux/in6.h warning about that. Allocate 70 for this, which seems to be unused instead. Cc: Tom Herbert <therbert@google.com> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Hans Wennborg authored
The prefix suggests the number should be printed in hex, so use the %x specifier to do that. Found by using regex suggested by Joe Perches. Signed-off-by:
Hans Wennborg <hans@hanshq.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Willem de Bruijn authored
A set of small fixes pointed out just after the merge: - make tcp_tx_timestamp static - make tcp_gso_tstamp static - use before() to compare TCP seqno, instead of cast to u64 - add tstamp to tx_flags in GSO, instead of overwrite tx_flags - record skb_shinfo(skb)->tskey for all timestamps, also HW. - optimization in tcp_tx_timestamp: call sock_tx_timestamp only if a tstamp option is set. Signed-off-by:
Willem de Bruijn <willemb@google.com> Fixes: 4ed2d765 ("net-timestamp: TCP timestamping") Signed-off-by:
David S. Miller <davem@davemloft.net>
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KY Srinivasan authored
WS2008R2 is a supported platform and it turns out that the maximum sendbuf size that ws2008R2 can support is only 15MB. Make the necessary adjustment. Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Hariprasad Shenai authored
Commit 35b1de55 ("rdma/cxgb4: Fixes cxgb4 probe failure in VM when PF is exposed through PCI Passthrough") introduced a regression, where VF failed to initialize for Physical function 0 to Physical Function 3. In the above commit, we removed the code which used to enable sriov for PF0 to PF3. Now adding it back to get sriov working. V2: Removed SRIOV loop for PF[0..3] to instantiate the VF's as per David Miller's comment Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
sock_tx_timestamp() should not ignore initial *tx_flags value, as TCP stack can store SKBTX_SHARED_FRAG in it. Also first argument (struct sock *) can be const. Signed-off-by:
Eric Dumazet <edumazet@google.com> Fixes: 4ed2d765 ("net-timestamp: TCP timestamping") Cc: Willem de Bruijn <willemb@google.com> Acked-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/ideLinus Torvalds authored
Pull IDE cleanup from David Miller: "Just one minor cleanup" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide: ide: use module_platform_driver()
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-nextLinus Torvalds authored
Pull sparc updates from David Miller: 1) Add sparc RAM output to /proc/iomem, from Bob Picco. 2) Allow seeks on /dev/mdesc, from Khalid Aziz. 3) Cleanup sparc64 I/O accessors, from Sam Ravnborg. 4) If update_mmu_cache{,_pmd}() is called with an not-valid mapping, do not insert it into the TLB miss hash tables otherwise we'll livelock. Based upon work by Christopher Alexander Tobias Schulze. 5) Fix BREAK detection in sunsab driver when no actual characters are pending, from Christopher Alexander Tobias Schulze. 6) Because we have modules --> openfirmware --> vmalloc ordering of virtual memory, the lazy VMAP TLB flusher can cons up an invocation of flush_tlb_kernel_range() that covers the openfirmware address range. Unfortunately this will flush out the firmware's locked TLB mapping which causes all kinds of trouble. Just split up the flush request if this happens, but in the long term the lazy VMAP flusher should probably be made a little bit smarter. Based upon work by Christopher Alexander Tobias Schulze. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next: sparc64: Fix up merge thinko. sparc: Add "install" target arch/sparc/math-emu/math_32.c: drop stray break operator sparc64: ldc_connect() should not return EINVAL when handshake is in progress. sparc64: Guard against flushing openfirmware mappings. sunsab: Fix detection of BREAK on sunsab serial console bbc-i2c: Fix BBC I2C envctrl on SunBlade 2000 sparc64: Do not insert non-valid PTEs into the TSB hash table. sparc64: avoid code duplication in io_64.h sparc64: reorder functions in io_64.h sparc64: drop unused SLOW_DOWN_IO definitions sparc64: remove macro indirection in io_64.h sparc64: update IO access functions in PeeCeeI sparcspkr: use sbus_*() primitives for IO sparc: Add support for seek and shorter read to /dev/mdesc sparc: use %s for unaligned panic drivers/sbus/char: Micro-optimization in display7seg.c display7seg: Introduce the use of the managed version of kzalloc sparc64 - add mem to iomem resource
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds authored
Pull networking updates from David Miller: "Highlights: 1) Steady transitioning of the BPF instructure to a generic spot so all kernel subsystems can make use of it, from Alexei Starovoitov. 2) SFC driver supports busy polling, from Alexandre Rames. 3) Take advantage of hash table in UDP multicast delivery, from David Held. 4) Lighten locking, in particular by getting rid of the LRU lists, in inet frag handling. From Florian Westphal. 5) Add support for various RFC6458 control messages in SCTP, from Geir Ola Vaagland. 6) Allow to filter bridge forwarding database dumps by device, from Jamal Hadi Salim. 7) virtio-net also now supports busy polling, from Jason Wang. 8) Some low level optimization tweaks in pktgen from Jesper Dangaard Brouer. 9) Add support for ipv6 address generation modes, so that userland can have some input into the process. From Jiri Pirko. 10) Consolidate common TCP connection request code in ipv4 and ipv6, from Octavian Purdila. 11) New ARP packet logger in netfilter, from Pablo Neira Ayuso. 12) Generic resizable RCU hash table, with intial users in netlink and nftables. From Thomas Graf. 13) Maintain a name assignment type so that userspace can see where a network device name came from (enumerated by kernel, assigned explicitly by userspace, etc.) From Tom Gundersen. 14) Automatic flow label generation on transmit in ipv6, from Tom Herbert. 15) New packet timestamping facilities from Willem de Bruijn, meant to assist in measuring latencies going into/out-of the packet scheduler, latency from TCP data transmission to ACK, etc" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1536 commits) cxgb4 : Disable recursive mailbox commands when enabling vi net: reduce USB network driver config options. tg3: Modify tg3_tso_bug() to handle multiple TX rings amd-xgbe: Perform phy connect/disconnect at dev open/stop amd-xgbe: Use dma_set_mask_and_coherent to set DMA mask net: sun4i-emac: fix memory leak on bad packet sctp: fix possible seqlock seadlock in sctp_packet_transmit() Revert "net: phy: Set the driver when registering an MDIO bus device" cxgb4vf: Turn off SGE RX/TX Callback Timers and interrupts in PCI shutdown routine team: Simplify return path of team_newlink bridge: Update outdated comment on promiscuous mode net-timestamp: ACK timestamp for bytestreams net-timestamp: TCP timestamping net-timestamp: SCHED timestamp on entering packet scheduler net-timestamp: add key to disambiguate concurrent datagrams net-timestamp: move timestamp flags out of sk_flags net-timestamp: extend SCM_TIMESTAMPING ancillary data struct cxgb4i : Move stray CPL definitions to cxgb4 driver tcp: reduce spurious retransmits due to transient SACK reneging qlcnic: Initialize dcbnl_ops before register_netdev ...
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- Aug 06, 2014
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/randomLinus Torvalds authored
Pull randomness updates from Ted Ts'o: "Cleanups and bug fixes to /dev/random, add a new getrandom(2) system call, which is a superset of OpenBSD's getentropy(2) call, for use with userspace crypto libraries such as LibreSSL. Also add the ability to have a kernel thread to pull entropy from hardware rng devices into /dev/random" * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: hwrng: Pass entropy to add_hwgenerator_randomness() in bits, not bytes random: limit the contribution of the hw rng to at most half random: introduce getrandom(2) system call hw_random: fix sparse warning (NULL vs 0 for pointer) random: use registers from interrupted code for CPU's w/o a cycle counter hwrng: add per-device entropy derating hwrng: create filler thread random: add_hwgenerator_randomness() for feeding entropy from devices random: use an improved fast_mix() function random: clean up interrupt entropy accounting for archs w/o cycle counters random: only update the last_pulled time if we actually transferred entropy random: remove unneeded hash of a portion of the entropy pool random: always update the entropy pool under the spinlock
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-securityLinus Torvalds authored
Pull security subsystem updates from James Morris: "In this release: - PKCS#7 parser for the key management subsystem from David Howells - appoint Kees Cook as seccomp maintainer - bugfixes and general maintenance across the subsystem" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (94 commits) X.509: Need to export x509_request_asymmetric_key() netlabel: shorter names for the NetLabel catmap funcs/structs netlabel: fix the catmap walking functions netlabel: fix the horribly broken catmap functions netlabel: fix a problem when setting bits below the previously lowest bit PKCS#7: X.509 certificate issuer and subject are mandatory fields in the ASN.1 tpm: simplify code by using %*phN specifier tpm: Provide a generic means to override the chip returned timeouts tpm: missing tpm_chip_put in tpm_get_random() tpm: Properly clean sysfs entries in error path tpm: Add missing tpm_do_selftest to ST33 I2C driver PKCS#7: Use x509_request_asymmetric_key() Revert "selinux: fix the default socket labeling in sock_graft()" X.509: x509_request_asymmetric_keys() doesn't need string length arguments PKCS#7: fix sparse non static symbol warning KEYS: revert encrypted key change ima: add support for measuring and appraising firmware firmware_class: perform new LSM checks security: introduce kernel_fw_from_file hook PKCS#7: Missing inclusion of linux/err.h ...
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Christoph Jaeger authored
Eliminate boilerplate code by using module_platform_driver(). Signed-off-by:
Christoph Jaeger <christophjaeger@linux.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcDavid S. Miller authored
Conflicts: arch/sparc/mm/init_64.c Conflict was simple non-overlapping additions. Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller authored
Conflicts: drivers/net/Makefile net/ipv6/sysctl_net_ipv6.c Two ipv6_table_template[] additions overlap, so the index of the ipv6_table[x] assignments needed to be adjusted. In the drivers/net/Makefile case, we've gotten rid of the garbage whereby we had to list every single USB networking driver in the top-level Makefile, there is just one "USB_NETWORKING" that guards everything. Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer and time updates from Thomas Gleixner: "A rather large update of timers, timekeeping & co - Core timekeeping code is year-2038 safe now for 32bit machines. Now we just need to fix all in kernel users and the gazillion of user space interfaces which rely on timespec/timeval :) - Better cache layout for the timekeeping internal data structures. - Proper nanosecond based interfaces for in kernel users. - Tree wide cleanup of code which wants nanoseconds but does hoops and loops to convert back and forth from timespecs. Some of it definitely belongs into the ugly code museum. - Consolidation of the timekeeping interface zoo. - A fast NMI safe accessor to clock monotonic for tracing. This is a long standing request to support correlated user/kernel space traces. With proper NTP frequency correction it's also suitable for correlation of traces accross separate machines. - Checkpoint/restart support for timerfd. - A few NOHZ[_FULL] improvements in the [hr]timer code. - Code move from kernel to kernel/time of all time* related code. - New clocksource/event drivers from the ARM universe. I'm really impressed that despite an architected timer in the newer chips SoC manufacturers insist on inventing new and differently broken SoC specific timers. [ Ed. "Impressed"? I don't think that word means what you think it means ] - Another round of code move from arch to drivers. Looks like most of the legacy mess in ARM regarding timers is sorted out except for a few obnoxious strongholds. - The usual updates and fixlets all over the place" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (114 commits) timekeeping: Fixup typo in update_vsyscall_old definition clocksource: document some basic timekeeping concepts timekeeping: Use cached ntp_tick_length when accumulating error timekeeping: Rework frequency adjustments to work better w/ nohz timekeeping: Minor fixup for timespec64->timespec assignment ftrace: Provide trace clocks monotonic timekeeping: Provide fast and NMI safe access to CLOCK_MONOTONIC seqcount: Add raw_write_seqcount_latch() seqcount: Provide raw_read_seqcount() timekeeping: Use tk_read_base as argument for timekeeping_get_ns() timekeeping: Create struct tk_read_base and use it in struct timekeeper timekeeping: Restructure the timekeeper some more clocksource: Get rid of cycle_last clocksource: Move cycle_last validation to core code clocksource: Make delta calculation a function wireless: ath9k: Get rid of timespec conversions drm: vmwgfx: Use nsec based interfaces drm: i915: Use nsec based interfaces timekeeping: Provide ktime_get_raw() hangcheck-timer: Use ktime_get_ns() ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq updates from Thomas Gleixner: "Nothing spectacular from the irq department this time: - overhaul of the crossbar chip driver - overhaul of the spear shirq chip driver - support for the atmel-aic chip - code move from arch to drivers - the usual tiny fixlets - two reverts worth to mention which undo the too simple attempt of supporting wakeup interrupts on shared interrupt lines" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits) Revert "irq: Warn when shared interrupts do not match on NO_SUSPEND" Revert "PM / sleep / irq: Do not suspend wakeup interrupts" irq: Warn when shared interrupts do not match on NO_SUSPEND irqchip: atmel-aic: Define irq fixups for atmel SoCs irqchip: atmel-aic: Implement RTC irq fixup irqchip: atmel-aic: Add irq fixup infrastructure irqchip: atmel-aic: Add atmel AIC/AIC5 drivers irqchip: atmel-aic: Move binding doc to interrupt-controller directory genirq: generic chip: Export irq_map_generic_chip function PM / sleep / irq: Do not suspend wakeup interrupts irqchip: or1k-pic: Migrate from arch/openrisc/ irqchip: crossbar: Allow for quirky hardware with direct hardwiring of GIC documentation: dt: omap: crossbar: Add description for interrupt consumer irqchip: crossbar: Introduce centralized check for crossbar write irqchip: crossbar: Introduce ti, max-crossbar-sources to identify valid crossbar mapping irqchip: crossbar: Add kerneldoc for crossbar_domain_unmap callback irqchip: crossbar: Set cb pointer to null in case of error irqchip: crossbar: Change the goto naming irqchip: crossbar: Return proper error value irqchip: crossbar: Fix kerneldoc warning ...
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Thomas Gleixner authored
Commit ea431643 ("x86/mce: Fix CMCI preemption bugs") breaks RT by the completely unrelated conversion of the cmci_discover_lock to a regular (non raw) spinlock. This lock was annotated in commit 59d958d2 ("locking, x86: mce: Annotate cmci_discover_lock as raw") with a proper explanation why. The argument for converting the lock back to a regular spinlock was: - it does percpu ops without disabling preemption. Preemption is not disabled due to the mistaken use of a raw spinlock. Which is complete nonsense. The raw_spinlock is disabling preemption in the same way as a regular spinlock. In mainline spinlock maps to raw_spinlock, in RT spinlock becomes a "sleeping" lock. raw_spinlock has on RT exactly the same semantics as in mainline. And because this lock is taken in non preemptible context it must be raw on RT. Undo the locking brainfart. Reported-by:
Clark Williams <williams@redhat.com> Reported-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Anish Bhatt authored
Enabling a Virtual Interface can result in an interrupt during the processing of the VI Enable command and, in some paths, result in an attempt to issue another command in the interrupt context, eventually crashing the system. Thus, we disable interrupts during the course of the VI Enable command and ensure enable doesn't sleep. Signed-off-by:
Anish Bhatt <anish@chelsio.com> Signed-off-by:
Casey Leedom <leedom@chelsio.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Francois Romieu authored
USB network drivers are already handled in drivers/net/usb/Kconfig. Let's save the maintenance burden of dependencies in drivers/net/Makefile. The newly introduced USB_NET_DRIVERS umbrella config option defaults to 'y' so as to minimize the changes of behavior. Signed-off-by:
Francois Romieu <romieu@fr.zoreil.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Prashant Sreedharan authored
tg3_tso_bug() was originally designed to handle only HW TX ring 0, Commit d3f6f3a1 ("tg3: Prevent page allocation failure during TSO workaround") changed the driver logic to use tg3_tso_bug() for all HW TX rings that are enabled. This patch fixes the regression by modifying tg3_tso_bug() to handle multiple HW TX rings. Signed-off-by:
Prashant Sreedharan <prashant@broadcom.com> Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Tom Lendacky says: ==================== amd-xgbe: AMD XGBE driver update 2014-08-05 The following series of patches includes fixes/updates to the driver. - Use dma_set_mask_and_coherent to set the DMA mask - Move the phy connect/disconnect logic to allow for module unloading Changes in V2: - Check the return value of the dma_set_mask_and_coherent call ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Lendacky, Thomas authored
A change added to the mdiobus/phy api added a module_get/module_put during phy connect/disconnect processing. Currently, the driver performs a phy connect during module probe and a phy disconnect during module remove. With the addition of the module_get during phy connect the amd-xgbe module use count is incremented and can no longer be unloaded. Move the phy connect/disconnect from the driver probe/remove functions to the net_device_ops ndo_open/ndo_stop functions. This allows the module use count to be decremented when the device(s) are brought down and allows the module to be unloaded. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Lendacky, Thomas authored
Use the dma_set_mask_and_coherent function to set the DMA mask rather than setting the DMA mask fields directly. This was originally done to work around a bug in the arm64 DMA support when RAM started above the 4GB boundary which has since been fixed. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Marc Zyngier authored
Upon reception of a new frame, the emac driver checks for a number of error conditions, and flag the packet as "bad" if any of these are present. It then allocates a skb unconditionally, but only uses it if the packet is "good". On the error path, the skb is just forgotten, and the system leaks memory. The piece of junk I have on my desk seems to encounter such error frequently enough so that the box goes OOM after a couple of days, which makes me grumpy. Fix this by moving the allocation on the "good_packet" path (and convert it to netdev_alloc_skb while we're at it). Tested on a random Allwinner A20 board. Cc: Stefan Roese <sr@denx.de> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: <stable@vger.kernel.org> # 3.11+ Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com> Acked-by:
Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
Dave reported following splat, caused by improper use of IP_INC_STATS_BH() in process context. BUG: using __this_cpu_add() in preemptible [00000000] code: trinity-c117/14551 caller is __this_cpu_preempt_check+0x13/0x20 CPU: 3 PID: 14551 Comm: trinity-c117 Not tainted 3.16.0+ #33 ffffffff9ec898f0 0000000047ea7e23 ffff88022d32f7f0 ffffffff9e7ee207 0000000000000003 ffff88022d32f818 ffffffff9e397eaa ffff88023ee70b40 ffff88022d32f970 ffff8801c026d580 ffff88022d32f828 ffffffff9e397ee3 Call Trace: [<ffffffff9e7ee207>] dump_stack+0x4e/0x7a [<ffffffff9e397eaa>] check_preemption_disabled+0xfa/0x100 [<ffffffff9e397ee3>] __this_cpu_preempt_check+0x13/0x20 [<ffffffffc0839872>] sctp_packet_transmit+0x692/0x710 [sctp] [<ffffffffc082a7f2>] sctp_outq_flush+0x2a2/0xc30 [sctp] [<ffffffff9e0d985c>] ? mark_held_locks+0x7c/0xb0 [<ffffffff9e7f8c6d>] ? _raw_spin_unlock_irqrestore+0x5d/0x80 [<ffffffffc082b99a>] sctp_outq_uncork+0x1a/0x20 [sctp] [<ffffffffc081e112>] sctp_cmd_interpreter.isra.23+0x1142/0x13f0 [sctp] [<ffffffffc081c86b>] sctp_do_sm+0xdb/0x330 [sctp] [<ffffffff9e0b8f1b>] ? preempt_count_sub+0xab/0x100 [<ffffffffc083b350>] ? sctp_cname+0x70/0x70 [sctp] [<ffffffffc08389ca>] sctp_primitive_ASSOCIATE+0x3a/0x50 [sctp] [<ffffffffc083358f>] sctp_sendmsg+0x88f/0xe30 [sctp] [<ffffffff9e0d673a>] ? lock_release_holdtime.part.28+0x9a/0x160 [<ffffffff9e0d62ce>] ? put_lock_stats.isra.27+0xe/0x30 [<ffffffff9e73b624>] inet_sendmsg+0x104/0x220 [<ffffffff9e73b525>] ? inet_sendmsg+0x5/0x220 [<ffffffff9e68ac4e>] sock_sendmsg+0x9e/0xe0 [<ffffffff9e1c0c09>] ? might_fault+0xb9/0xc0 [<ffffffff9e1c0bae>] ? might_fault+0x5e/0xc0 [<ffffffff9e68b234>] SYSC_sendto+0x124/0x1c0 [<ffffffff9e0136b0>] ? syscall_trace_enter+0x250/0x330 [<ffffffff9e68c3ce>] SyS_sendto+0xe/0x10 [<ffffffff9e7f9be4>] tracesys+0xdd/0xe2 This is a followup of commits f1d8cba6 ("inet: fix possible seqlock deadlocks") and 7f88c6b2 ("ipv6: fix possible seqlock deadlock in ip6_finish_output2") Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Reported-by:
Dave Jones <davej@redhat.com> Acked-by:
Neil Horman <nhorman@tuxdriver.com> Acked-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Fabio Estevam authored
Commit a71e3c37 ("net: phy: Set the driver when registering an MDIO bus device") caused the following regression on the fec driver: root@imx6qsabresd:~# echo mem > /sys/power/state PM: Syncing filesystems ... done. Freezing user space processes ... (elapsed 0.003 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.002 seconds) done. Unable to handle kernel NULL pointer dereference at virtual address 0000002c pgd = bcd14000 [0000002c] *pgd=4d9e0831, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] SMP ARM Modules linked in: CPU: 0 PID: 617 Comm: sh Not tainted 3.16.0 #17 task: bc0c4e00 ti: bceb6000 task.ti: bceb6000 PC is at fec_suspend+0x10/0x70 LR is at dpm_run_callback.isra.7+0x34/0x6c pc : [<803f8a98>] lr : [<80361f44>] psr: 600f0013 sp : bceb7d70 ip : bceb7d88 fp : bceb7d84 r10: 8091523c r9 : 00000000 r8 : bd88f478 r7 : 803f8a88 r6 : 81165988 r5 : 00000000 r4 : 00000000 r3 : 00000000 r2 : 00000000 r1 : bd88f478 r0 : bd88f478 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 10c5387d Table: 4cd1404a DAC: 00000015 Process sh (pid: 617, stack limit = 0xbceb6240) Stack: (0xbceb7d70 to 0xbceb8000) .... The problem with the original commit is explained by Russell King: "It has the effect (as can be seen from the oops) of attaching the MDIO bus device (itself is a bus-less device) to the platform driver, which means that if the platform driver supports power management, it will be called to power manage the MDIO bus device. Moreover, drivers do not expect to be called for power management operations for devices which they haven't probed, and certainly not for devices which aren't part of the same bus that the driver is registered against." This reverts commit a71e3c37 . Cc: <stable@vger.kernel.org> #3.16 Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Hariprasad Shenai authored
Need to turn off SGE RX/TX Callback Timers & interrupt in cxgb4vf PCI Shutdown routine in order to prevent crashes during reboot/poweroff when traffic is running. Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Antonio Quartulli says: ==================== pull request: batman-adv 2014-08-05 this is a pull request intended for net-next/linux-3.17 (yeah..it's really late). Patches 1, 2 and 4 are really minor changes: - kmalloc_array is substituted to kmalloc when possible (as suggested by checkpatch); - net_ratelimited() is now used properly and the "suppressed" message is not printed anymore if not needed; - the internal version number has been increased to reflect our current version. Patch 3 instead is introducing a change in the metric computation function by changing the penalty applied at each mesh hop from 15/255 (~6%) to 30/255 (~11%). This change is introduced by Simon Wunderlich after having observed a performance improvement in several networks when using the new value. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Toshiaki Makita authored
The variable "err" is not necessary. Return register_netdevice() directly. Signed-off-by:
Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Acked-by:
Jiri Pirko <jiri@resnulli.us> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Toshiaki Makita authored
Now bridge ports can be non-promiscuous, vlan_vid_add() is no longer an unnecessary operation. Signed-off-by:
Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds authored
Pull media updates from Mauro Carvalho Chehab: - removal of sn9c102. This device driver was replaced a long time ago by gspca - solo6x10 and go7007 webcam drivers moved from staging into mainstream. They were waiting for an API to allow setting the image detection matrix - SDR drivers moved from staging into mainstream: sdr-msi3101 (renamed as msi2500) and rtl2832 - added SDR driver for airspy - added demux driver: si2165 - rework at several RC subsystem, making the code for RC-5 SZ variant to be added at the standard RC5 decoder - added decoder for the XMP IR protocol - tuner driver moved from staging into mainstream: msi3101 (renamed as msi001) - added documentation for some additional SDR pixfmt - some device tree bindings documented - added support for exynos3250 at s5p-jpeg - remove the obsolete, unmaintained and broken mx1_camera driver - added support for remote controllers at au0828 driver - added a RC driver: sunxi-cir - several driver fixes, enhancements and cleanups. * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (455 commits) [media] cx23885: fix UNSET/TUNER_ABSENT confusion [media] coda: fix build error by making reset control optional [media] radio-miropcm20: fix sparse NULL pointer warning [media] MAINTAINERS: Update go7007 pattern [media] MAINTAINERS: Update solo6x10 patterns [media] media: atmel-isi: add primary DT support [media] media: atmel-isi: convert the pdata from pointer to structure [media] media: atmel-isi: add v4l2 async probe support [media] rcar_vin: add devicetree support [media] media: pxa_camera device-tree support [media] media: mt9m111: add device-tree suppport [media] soc_camera: add support for dt binding soc_camera drivers [media] media: soc_camera: pxa_camera documentation device-tree support [media] media: mt9m111: add device-tree documentation [media] s5p-mfc: remove unnecessary calling to function video_devdata() [media] s5p-jpeg: add chroma subsampling adjustment for Exynos3250 [media] s5p-jpeg: Prevent erroneous downscaling for Exynos3250 SoC [media] s5p-jpeg: Assure proper crop rectangle initialization [media] s5p-jpeg: fix g_selection op [media] s5p-jpeg: Adjust jpeg_bound_align_image to Exynos3250 needs ...
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David S. Miller authored
Willem de Bruijn says: ==================== net-timestamp: new tx tstamps and tcp Extend socket tx timestamping: - allow multiple types of software timestamps aside from send (1) - add software timestamp on enter packet scheduling (4) - add software timestamp for TCP (5) - add software timestamp for TCP on ACK (6) The sk_flags option space is nearly exhausted. Also move the many timestamp options to a new sk->sk_tstamps (2). To disambiguate data when tstamps may arrive out of order, optionally return a sequential ID assigned at send (3). Extend Linux tx timestamping to monitoring of latency incurred within the kernel stack and to protocols embedded in TCP. Complex kernel setups may have multiple layers of queueing, including multiple instances of packet scheduling, and many classes per layer. Many applications embed discrete payloads into TCP bytestreams for reliability, flow control, etcetera. Detecting application tail latency in such scenarios relies on identifying the exact queue responsible if on the host, or the network latency if otherwise. Changelog: v4->v5 - define SCM_TSTAMP_SND == 0, for legacy behavior - add TCP tstamps without changing the generated byte stream - modify GSO and ACK to find offset: slightly more complex than previous invariant that it is the last byte - consistent naming of packet scheduling - rename SCM_TSTAMP_ENQ to SCM_TSTAMP_SCHED - add unique key in ee_data - add id field in ee_info to disambiguate tstamps - optional, only on new flag SOF_TIMESTAMPING_OPT_ID - for bytestream, in bytes v3->v4 - (v3 review comment) removed skb->mark packet identification (*A) - (v3 review comment) fixed indentation - tcp: fixed poll() to return POLLERR on non-zero queue - rebased to work without syststamp - comments: removed all traces of MSG_TSTAMP_.. (*B) v2->v3 - extend the SO_TIMESTAMPING API, instead of defining a new one. - add protocol independent support to correlate tstamps with data, based on returning skb->mark. - removed no-payload optimization and documentation (for now): I have a follow-on patch that reintroduces MSG_TSTAMP along with a new socket option SOF_TIMESTAMPING_OPT_ONFLAG. This is equivalent to sequence setsockopt(<enable>); send(..); setsockopt(<disable>), but avoids the need to define a MSG_TSTAMP_<TYPE> for each type. I will leave these three patches as follow-on, as this patchset is large enough as is. v1->v2 - expand timestamping (existing and new) to SOCK_RAW and ping sockets - rename sock_errqueue_timestamping to scm_timestamping - change timestamp data format: do not add fields to scm_timestamping. Doing so could break legacy applications. Instead, communicate through an existing, but unused, field in the error message. - rename SOF_.._OPT_TX_NO_PAYLOAD to shorter SOF_.._OPT_TSONLY - move msg_tstamp test app out of patchset and to github git://github.com/wdebruij/kerneltools.git ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Willem de Bruijn authored
Add SOF_TIMESTAMPING_TX_ACK, a request for a tstamp when the last byte in the send() call is acknowledged. It implements the feature for TCP. The timestamp is generated when the TCP socket cumulative ACK is moved beyond the tracked seqno for the first time. The feature ignores SACK and FACK, because those acknowledge the specific byte, but not necessarily the entire contents of the buffer up to that byte. Signed-off-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Willem de Bruijn authored
TCP timestamping extends SO_TIMESTAMPING to bytestreams. Bytestreams do not have a 1:1 relationship between send() buffers and network packets. The feature interprets a send call on a bytestream as a request for a timestamp for the last byte in that send() buffer. The choice corresponds to a request for a timestamp when all bytes in the buffer have been sent. That assumption depends on in-order kernel transmission. This is the common case. That said, it is possible to construct a traffic shaping tree that would result in reordering. The guarantee is strong, then, but not ironclad. This implementation supports send and sendpages (splice). GSO replaces one large packet with multiple smaller packets. This patch also copies the option into the correct smaller packet. This patch does not yet support timestamping on data in an initial TCP Fast Open SYN, because that takes a very different data path. If ID generation in ee_data is enabled, bytestream timestamps return a byte offset, instead of the packet counter for datagrams. The implementation supports a single timestamp per packet. It silenty replaces requests for previous timestamps. To avoid missing tstamps, flush the tcp queue by disabling Nagle, cork and autocork. Missing tstamps can be detected by offset when the ee_data ID is enabled. Implementation details: - On GSO, the timestamping code can be included in the main loop. I moved it into its own loop to reduce the impact on the common case to a single branch. - To avoid leaking the absolute seqno to userspace, the offset returned in ee_data must always be relative. It is an offset between an skb and sk field. The first is always set (also for GSO & ACK). The second must also never be uninitialized. Only allow the ID option on sockets in the ESTABLISHED state, for which the seqno is available. Never reset it to zero (instead, move it to the current seqno when reenabling the option). Signed-off-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Willem de Bruijn authored
Kernel transmit latency is often incurred in the packet scheduler. Introduce a new timestamp on transmission just before entering the scheduler. When data travels through multiple devices (bonding, tunneling, ...) each device will export an individual timestamp. Signed-off-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Willem de Bruijn authored
Datagrams timestamped on transmission can coexist in the kernel stack and be reordered in packet scheduling. When reading looped datagrams from the socket error queue it is not always possible to unique correlate looped data with original send() call (for application level retransmits). Even if possible, it may be expensive and complex, requiring packet inspection. Introduce a data-independent ID mechanism to associate timestamps with send calls. Pass an ID alongside the timestamp in field ee_data of sock_extended_err. The ID is a simple 32 bit unsigned int that is associated with the socket and incremented on each send() call for which software tx timestamp generation is enabled. The feature is enabled only if SOF_TIMESTAMPING_OPT_ID is set, to avoid changing ee_data for existing applications that expect it 0. The counter is reset each time the flag is reenabled. Reenabling does not change the ID of already submitted data. It is possible to receive out of order IDs if the timestamp stream is not quiesced first. Signed-off-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Willem de Bruijn authored
sk_flags is reaching its limit. New timestamping options will not fit. Move all of them into a new field sk->sk_tsflags. Added benefit is that this removes boilerplate code to convert between SOF_TIMESTAMPING_.. and SOCK_TIMESTAMPING_.. in getsockopt/setsockopt. SOCK_TIMESTAMPING_RX_SOFTWARE is also used to toggle the receive timestamp logic (netstamp_needed). That can be simplified and this last key removed, but will leave that for a separate patch. Signed-off-by:
Willem de Bruijn <willemb@google.com> ---- The u16 in sock can be moved into a 16-bit hole below sk_gso_max_segs, though that scatters tstamp fields throughout the struct. Signed-off-by:
David S. Miller <davem@davemloft.net>
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