1. 25 May, 2015 9 commits
  2. 23 May, 2015 13 commits
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 36583eb5
      David S. Miller authored
      Conflicts:
      	drivers/net/ethernet/cadence/macb.c
      	drivers/net/phy/phy.c
      	include/linux/skbuff.h
      	net/ipv4/tcp.c
      	net/switchdev/switchdev.c
      
      Switchdev was a case of RTNH_H_{EXTERNAL --> OFFLOAD}
      renaming overlapping with net-next changes of various
      sorts.
      
      phy.c was a case of two changes, one adding a local
      variable to a function whilst the second was removing
      one.
      
      tcp.c overlapped a deadlock fix with the addition of new tcp_info
      statistic values.
      
      macb.c involved the addition of two zyncq device entries.
      
      skbuff.h involved adding back ipv4_daddr to nf_bridge_info
      whilst net-next changes put two other existing members of
      that struct into a union.
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      36583eb5
    • David S. Miller's avatar
      Merge branch 'pktgen-new-scripts' · fa7912be
      David S. Miller authored
      Jesper Dangaard Brouer says:
      
      ====================
      pktgen: cleanups and introducing new samples/pktgen scripts
      
      v3:
       - Aborted v2 send due it was not generating diff stat
         (this is a bug in stg-mail, if not in the root directory)
      
      v2: address nitpicks from Cong Wang
       - Remove useless cat's, but keep them for old pgset()
       - Comment on: Due to pgctrl, cannot use exit code $? from grep
       - Use arithmetic compare in pktgen_sample03_burst_single_flow.sh
      
      This patchset is focused on making pktgen easier to use and better
      documented. It contains a number of documentation updates and minor
      changes to pktgen.  The major contribution is introduction of common
      helper function for sample scripts.
      
      Instead of the old pgset() function, three new shell functions for
      configuring the different components of pktgen are introduced:
       pg_ctrl(), pg_thread() and pg_set().
      
      The new functions correspond to pktgens different components.
       * pg_ctrl()   control "pgctrl" (/proc/net/pktgen/pgctrl)
       * pg_thread() control the kernel threads and binding to devices
       * pg_set()    control setup of individual devices
      
      Helpers also provide consistent parameter parsing across the sample
      scripts.
      
      Usage example:
       ./pktgen_sample01_simple.sh -i eth41 -m 00:12:C0:02:AC:5A -d 192.168.41.2
      
      Usage: ./pktgen_sample01_simple.sh [-vx] -i ethX
        -i : ($DEV)       output interface/device (required)
        -s : ($PKT_SIZE)  packet size
        -d : ($DEST_IP)   destination IP
        -m : ($DST_MAC)   destination MAC-addr
        -t : ($THREADS)   threads to start
        -c : ($SKB_CLONE) SKB clones send before alloc new SKB
        -b : ($BURST)     HW level bursting of SKBs
        -v : ($VERBOSE)   verbose
        -x : ($DEBUG)     debug
      
      These scripts are borrowed from:
       https://github.com/netoptimizer/network-testing/tree/master/pktgen
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fa7912be
    • Jesper Dangaard Brouer's avatar
      pktgen: add benchmark script pktgen_bench_xmit_mode_netif_receive.sh · 05a14d5e
      Jesper Dangaard Brouer authored
      This script pktgen_bench_xmit_mode_netif_receive.sh is a benchmark
      script, which can be used for benchmarking part of the network stack.
      This can be used for performance improving or catching regression in
      that area.
      
      The script is developed for benchmarking ingress qdisc path, original
      idea by Alexei Starovoitov.  This script don't really need any
      hardware.  This is achieved via the recently introduced stack inject
      feature "xmit_mode netif_receive". See commit 62f64aed ("pktgen:
      introduce xmit_mode '<start_xmit|netif_receive>'").
      Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      05a14d5e
    • Jesper Dangaard Brouer's avatar
      pktgen: add sample script pktgen_sample03_burst_single_flow.sh · 1d73ba16
      Jesper Dangaard Brouer authored
      Add the pktgen samples script pktgen_sample03_burst_single_flow.sh
      that demonstrates how to acheive maximum performance.
      
      If correctly tuned[1] single CPU 10Gbit/s wirespeed small pkts is
      possible[2] which is 14.88Mpps.  The trick is to take advantage of the
      "burst" feature introduced in commit 38b2cf29 ("net: pktgen:
      packet bursting via skb->xmit_more").
      
      [1] http://netoptimizer.blogspot.dk/2014/06/pktgen-for-network-overload-testing.html
      [2] http://netoptimizer.blogspot.dk/2014/10/unlocked-10gbps-tx-wirespeed-smallest.htmlSigned-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1d73ba16
    • Jesper Dangaard Brouer's avatar
      pktgen: add sample script pktgen_sample02_multiqueue.sh · 282fb589
      Jesper Dangaard Brouer authored
      Add the pktgen samples script pktgen_sample02_multiqueue.sh that
      demonstrates generating packets on multiqueue NICs.
      
      Specifically notice the options "-t" that specifies how many
      kernel threads to activate.  Also notice the flag QUEUE_MAP_CPU,
      which cause the SKB TX queue to be mapped to the CPU running the
      kernel thread.  For best scalability people are also encourage to
      map NIC IRQ /proc/irq/*/smp_affinity to CPU number.
      
      Usage example with "-t" 4 threads and help:
       ./pktgen_sample02_multiqueue.sh -i eth4 -m 00:1B:21:3C:9D:F8 -t 4
      
      Usage: ./pktgen_sample02_multiqueue.sh [-vx] -i ethX
        -i : ($DEV)       output interface/device (required)
        -s : ($PKT_SIZE)  packet size
        -d : ($DEST_IP)   destination IP
        -m : ($DST_MAC)   destination MAC-addr
        -t : ($THREADS)   threads to start
        -c : ($SKB_CLONE) SKB clones send before alloc new SKB
        -b : ($BURST)     HW level bursting of SKBs
        -v : ($VERBOSE)   verbose
        -x : ($DEBUG)     debug
      
      Removing pktgen.conf-2-1 and pktgen.conf-2-2 as these examples
      should be covered now.
      Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      282fb589
    • Jesper Dangaard Brouer's avatar
      pktgen: add sample script pktgen_sample01_simple.sh · 6f094797
      Jesper Dangaard Brouer authored
      Add the first basic pktgen samples script pktgen_sample01_simple.sh,
      which demonstrates the a simple use of the helper functions.
      Removing pktgen.conf-1-1 as that example should be covered now.
      
      The naming scheme pktgen_sampleNN, where NN is a number, should encourage
      reading the samples in a specific order.
      
      Script cause pktgen sending with a single thread and single interface,
      and introduce flow variation via random UDP source port.
      
      Usage example and help:
       ./pktgen_sample01_simple.sh -i eth4 -m 00:1B:21:3C:9D:F8 -d 192.168.8.2
      
      Usage: ./pktgen_sample01_simple.sh [-vx] -i ethX
        -i : ($DEV)       output interface/device (required)
        -s : ($PKT_SIZE)  packet size
        -d : ($DEST_IP)   destination IP
        -m : ($DST_MAC)   destination MAC-addr
        -c : ($SKB_CLONE) SKB clones send before alloc new SKB
        -v : ($VERBOSE)   verbose
        -x : ($DEBUG)     debug
      Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6f094797
    • Jesper Dangaard Brouer's avatar
      pktgen: new pktgen helper functions for samples scripts · b64b0d1e
      Jesper Dangaard Brouer authored
      Preparing for removing existing samples/pktgen/ scripts, and
      replacing these with easier to use samples.
      
      This commit provides two helper shell files, that can
      be "included" by shell source'ing. Namely "functions.sh"
      and "parameters.sh".
      
      The parameters.sh file support easy and consistant parameter
      parsing across the sample scripts.  Usage example is printed on
      errors.
      
      The functions.sh file provides, three new shell functions for
      configuring the different components of pktgen: pg_ctrl(),
      pg_thread() and pg_set().  A slightly improved version of the old
      pgset() function is also provided for backwards compat.
      
      The new functions correspond to pktgens different components.
       * pg_ctrl()   control "pgctrl" (/proc/net/pktgen/pgctrl)
       * pg_thread() control the kernel threads and binding to devices
       * pg_set()    control setup of individual devices
      
      These changes are borrowed from:
       https://github.com/netoptimizer/network-testing/tree/master/pktgenSigned-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b64b0d1e
    • Jesper Dangaard Brouer's avatar
      pktgen: make /proc/net/pktgen/pgctrl report fail on invalid input · 40207264
      Jesper Dangaard Brouer authored
      Giving /proc/net/pktgen/pgctrl an invalid command just returns shell
      success and prints a warning in dmesg.  This is not very useful for
      shell scripting, as it can only detect the error by parsing dmesg.
      
      Instead return -EINVAL when the command is unknown, as this provides
      userspace shell scripting a way of detecting this.
      
      Also bump version tag to 2.75, because (1) reading /proc/net/pktgen/pgctrl
      output this version number which would allow to detect this small
      semantic change, and (2) because the pktgen version tag have not been
      updated since 2010.
      Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      40207264
    • Jesper Dangaard Brouer's avatar
      pktgen: document ability to add same device to several threads · 2a1ddf27
      Jesper Dangaard Brouer authored
      The pktgen.txt documentation still claimed that adding same device to
      multiple threads were not supported, but it have been since 2008 via
      commit e6fce5b9 ("pktgen: multiqueue etc.").
      
      Document this and describe the naming scheme dev@X, as the procfile name
      still need to be unique.
      
      Fixes: e6fce5b9 ("pktgen: multiqueue etc.")
      Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Acked-by: default avatarAlexei Starovoitov <ast@plumgrid.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2a1ddf27
    • Jesper Dangaard Brouer's avatar
      pktgen: doc were missing several config options · 91db4b3c
      Jesper Dangaard Brouer authored
      The pktgen.txt documentation over available config options were not complete.
      Making the list complete by adding the following.
      
      Pgcontrol commands:
       reset
      
      Device commands:
       burst
       queue_map_min
       queue_map_max
       skb_priority
       tos
       traffic_class
       node
       spi
       dst6_max
       dst6_min
       vlan_cfi
       vlan_id
       vlan_p
       svlan_cfi
       svlan_id
       svlan_p
      Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      91db4b3c
    • Jesper Dangaard Brouer's avatar
      pktgen: adjust spacing in proc file interface output · d079abd1
      Jesper Dangaard Brouer authored
      Too many spaces were introduced in commit 63adc6fb ("pktgen: cleanup
      checkpatch warnings"), thus misaligning "src_min:" to other columns.
      
      Fixes: 63adc6fb ("pktgen: cleanup checkpatch warnings")
      Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d079abd1
    • Jesper Dangaard Brouer's avatar
      pktgen: remove obsolete "max_before_softirq" from pktgen doc · d012827e
      Jesper Dangaard Brouer authored
      And cleanup some whitespaces in pktgen.txt.
      Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d012827e
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · cf539cbd
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Radeon has two displayport fixes, one for a regression.
      
        i915 regression flicker fix needed so 4.0 can get fixed.
      
        A bunch of msm fixes and a bunch of exynos fixes, these two are
        probably a bit larger than I'd like, but most of them seems pretty
        good"
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (29 commits)
        drm/radeon: fix error flag checking in native aux path
        drm/radeon: retry dcpd fetch
        drm/msm/mdp5: fix incorrect parameter for msm_framebuffer_iova()
        drm/exynos: dp: Lower level of EDID read success message
        drm/exynos: cleanup exynos_drm_plane
        drm/exynos: 'win' is always unsigned
        drm/exynos: mixer: don't dump registers under spinlock
        drm/exynos: Consolidate return statements in fimd_bind()
        drm/exynos: Constify exynos_drm_crtc_ops
        drm/exynos: Fix build breakage on !DRM_EXYNOS_FIMD
        drm/exynos: mixer: Constify platform_device_id
        drm/exynos: mixer: cleanup pixelformat handling
        drm/exynos: mixer: also allow NV21 for the video processor
        drm/exynos: mixer: remove buffer count handling in vp_video_buffer()
        drm/exynos: plane: honor buffer offset for dma_addr
        drm/exynos: fb: use drm_format_num_planes to get buffer count
        drm/i915: fix screen flickering
        drm/msm: fix locking inconsistencies in gpu->destroy()
        drm/msm/dsi: Simplify the code to get the number of read byte
        drm/msm: Attach assigned encoder to eDP and DSI connectors
        ...
      cf539cbd
  3. 22 May, 2015 18 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 0b6280c6
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Don't leak ipvs->sysctl_tbl, from Tommi Rentala.
      
       2) Fix neighbour table entry leak in rocker driver, from Ying Xue.
      
       3) Do not emit bonding notifications for unregistered interfaces, from
          Nicolas Dichtel.
      
       4) Set ipv6 flow label properly when in TIME_WAIT state, from Florent
          Fourcot.
      
       5) Fix regression in ipv6 multicast filter test, from Henning Rogge.
      
       6) do_replace() in various footables netfilter modules is missing a
          check for 0 counters in the datastructure provided by the user.  Fix
          from Dave Jones, and found with trinity.
      
       7) Fix RCU bug in packet scheduler classifier module unloads, from
          Daniel Borkmann.
      
       8) Avoid deadlock in tcp_get_info() by using u64_sync.  From Eric
          Dumzaet.
      
       9) Input packet processing can race with inetdev_destroy() teardown,
          fix potential OOPS in ip_error() by explicitly testing whether the
          inetdev is still attached.  From Eric W Biederman.
      
      10) MLDv2 parser in bridge multicast code breaks too early while
          parsing.  Fix from Thadeu Lima de Souza Cascardo.
      
      11) Asking for settings on non-zero PHYID doesn't work because we do not
          import the command structure from the user and use the PHYID
          provided there.  Fix from Arun Parameswaran.
      
      12) Fix UDP checksums with IPV6 RAW sockets, from Vlad Yasevich.
      
      13) Missing NF_TABLES depends for TPROXY etc can cause build failures,
          fix from Florian Westphal.
      
      14) Fix netfilter conntrack to handle RFC5961 challenge ACKs properly,
          from Jesper Dangaard Brouer.
      
      15) If netlink autobind retry fails, we have to reset the sockets portid
          back to zero.  From Herbert Xu.
      
      16) VXLAN netns exit code unregisters using wrong device, from John W
          Linville.
      
      17) Add some USB device IDs to ath3k and btusb bluetooth drivers, from
          Dmitry Tunin and Wen-chien Jesse Sung.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
        bridge: fix lockdep splat
        net: core: 'ethtool' issue with querying phy settings
        bridge: fix parsing of MLDv2 reports
        ARM: zynq: DT: Use the zynq binding with macb
        net: macb: Disable half duplex gigabit on Zynq
        net: macb: Document zynq gem dt binding
        ipv4: fill in table id when replacing a route
        cdc_ncm: Fix tx_bytes statistics
        ipv4: Avoid crashing in ip_error
        tcp: fix a potential deadlock in tcp_get_info()
        net: sched: fix call_rcu() race on classifier module unloads
        net: phy: Make sure phy_start() always re-enables the phy interrupts
        ipv6: fix ECMP route replacement
        ipv6: do not delete previously existing ECMP routes if add fails
        Revert "netfilter: bridge: query conntrack about skb dnat"
        netfilter: ensure number of counters is >0 in do_replace()
        netfilter: nfnetlink_{log,queue}: Register pernet in first place
        tcp: don't over-send F-RTO probes
        tcp: only undo on partial ACKs in CA_Loss
        net/ipv6/udp: Fix ipv6 multicast socket filter regression
        ...
      0b6280c6
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 1c8df7bd
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "Three small fixes that have been picked up the last few weeks.
        Specifically:
      
         - Fix a memory corruption issue in NVMe with malignant user
           constructed request.  From Christoph.
      
         - Kill (now) unused blk_queue_bio(), dm was changed to not need this
           anymore.  From Mike Snitzer.
      
         - Always use blk_schedule_flush_plug() from the io_schedule() path
           when flushing a plug, fixing a !TASK_RUNNING warning with md.  From
           Shaohua"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        sched: always use blk_schedule_flush_plug in io_schedule_out
        nvme: fix kernel memory corruption with short INQUIRY buffers
        block: remove export for blk_queue_bio
      1c8df7bd
    • Linus Torvalds's avatar
      Merge tag 'md/4.1-rc4-fixes' of git://neil.brown.name/md · a30ec4b3
      Linus Torvalds authored
      Pull md bugfixes from Neil Brown:
       "I have a few more raid5 bugfixes pending, but I want them to get a bit
        more review first.  In the meantime:
      
         - one serious RAID0 data corruption - caused by recent bugfix that
           wasn't reviewed properly.
      
         - one raid5 fix in new code (a couple more of those to come).
      
         - one little fix to stop static analysis complaining about silly rcu
           annotation"
      
      * tag 'md/4.1-rc4-fixes' of git://neil.brown.name/md:
        md/bitmap: remove rcu annotation from pointer arithmetic.
        md/raid0: fix restore to sector variable in raid0_make_request
        raid5: fix broken async operation chain
      a30ec4b3
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · 1d82b0ba
      Linus Torvalds authored
      Pull input fixes from Dmitry Torokhov:
       "Updates for the input subsystem.
      
        The main change is that we tell joydev not to touch "absolute mice",
        such as VMware virtual mouse, as that produced bad result (cursor
        stuck in upper right corner) with games"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: smtpe-ts - wait 50mS until polling for pen-up
        Input: smtpe-ts - use msecs_to_jiffies() instead of HZ
        Input: joydev - don't classify the vmmouse as a joystick
        Input: vmmouse - do not reference non-existing version of X driver
        Input: alps - fix finger jumps on lifting 2 fingers on v7 touchpad
        Input: elantech - fix semi-mt protocol for v3 HW
        Input: sx8654 - fix memory allocation check
      1d82b0ba
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · 2a058f38
      Linus Torvalds authored
      Pull another crypto fix from Herbert Xu:
       "Fix ICV corruption in s390/ghash when the same tfm is used by more
        than one thread"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: s390/ghash - Fix incorrect ghash icv buffer handling.
      2a058f38
    • Eric Dumazet's avatar
      bridge: fix lockdep splat · 93a33a58
      Eric Dumazet authored
      Following lockdep splat was reported :
      
      [   29.382286] ===============================
      [   29.382315] [ INFO: suspicious RCU usage. ]
      [   29.382344] 4.1.0-0.rc0.git11.1.fc23.x86_64 #1 Not tainted
      [   29.382380] -------------------------------
      [   29.382409] net/bridge/br_private.h:626 suspicious
      rcu_dereference_check() usage!
      [   29.382455]
                     other info that might help us debug this:
      
      [   29.382507]
                     rcu_scheduler_active = 1, debug_locks = 0
      [   29.382549] 2 locks held by swapper/0/0:
      [   29.382576]  #0:  (((&p->forward_delay_timer))){+.-...}, at:
      [<ffffffff81139f75>] call_timer_fn+0x5/0x4f0
      [   29.382660]  #1:  (&(&br->lock)->rlock){+.-...}, at:
      [<ffffffffa0450dc1>] br_forward_delay_timer_expired+0x31/0x140
      [bridge]
      [   29.382754]
                     stack backtrace:
      [   29.382787] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
      4.1.0-0.rc0.git11.1.fc23.x86_64 #1
      [   29.382838] Hardware name: LENOVO 422916G/LENOVO, BIOS A1KT53AUS 04/07/2015
      [   29.382882]  0000000000000000 3ebfc20364115825 ffff880666603c48
      ffffffff81892d4b
      [   29.382943]  0000000000000000 ffffffff81e124e0 ffff880666603c78
      ffffffff8110bcd7
      [   29.383004]  ffff8800785c9d00 ffff88065485ac58 ffff880c62002800
      ffff880c5fc88ac0
      [   29.383065] Call Trace:
      [   29.383084]  <IRQ>  [<ffffffff81892d4b>] dump_stack+0x4c/0x65
      [   29.383130]  [<ffffffff8110bcd7>] lockdep_rcu_suspicious+0xe7/0x120
      [   29.383178]  [<ffffffffa04520f9>] br_fill_ifinfo+0x4a9/0x6a0 [bridge]
      [   29.383225]  [<ffffffffa045266b>] br_ifinfo_notify+0x11b/0x4b0 [bridge]
      [   29.383271]  [<ffffffffa0450d90>] ? br_hold_timer_expired+0x70/0x70 [bridge]
      [   29.383320]  [<ffffffffa0450de8>]
      br_forward_delay_timer_expired+0x58/0x140 [bridge]
      [   29.383371]  [<ffffffffa0450d90>] ? br_hold_timer_expired+0x70/0x70 [bridge]
      [   29.383416]  [<ffffffff8113a033>] call_timer_fn+0xc3/0x4f0
      [   29.383454]  [<ffffffff81139f75>] ? call_timer_fn+0x5/0x4f0
      [   29.383493]  [<ffffffff8110a90f>] ? lock_release_holdtime.part.29+0xf/0x200
      [   29.383541]  [<ffffffffa0450d90>] ? br_hold_timer_expired+0x70/0x70 [bridge]
      [   29.383587]  [<ffffffff8113a6a4>] run_timer_softirq+0x244/0x490
      [   29.383629]  [<ffffffff810b68cc>] __do_softirq+0xec/0x670
      [   29.383666]  [<ffffffff810b70d5>] irq_exit+0x145/0x150
      [   29.383703]  [<ffffffff8189f506>] smp_apic_timer_interrupt+0x46/0x60
      [   29.383744]  [<ffffffff8189d523>] apic_timer_interrupt+0x73/0x80
      [   29.383782]  <EOI>  [<ffffffff816f131f>] ? cpuidle_enter_state+0x5f/0x2f0
      [   29.383832]  [<ffffffff816f131b>] ? cpuidle_enter_state+0x5b/0x2f0
      
      Problem here is that br_forward_delay_timer_expired() is a timer
      handler, calling br_ifinfo_notify() which assumes either rcu_read_lock()
      or RTNL are held.
      
      Simplest fix seems to add rcu read lock section.
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarJosh Boyer <jwboyer@fedoraproject.org>
      Reported-by: default avatarDominick Grift <dac.override@gmail.com>
      Cc: Vlad Yasevich <vyasevich@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      93a33a58
    • Arun Parameswaran's avatar
      net: core: 'ethtool' issue with querying phy settings · f96dee13
      Arun Parameswaran authored
      When trying to configure the settings for PHY1, using commands
      like 'ethtool -s eth0 phyad 1 speed 100', the 'ethtool' seems to
      modify other settings apart from the speed of the PHY1, in the
      above case.
      
      The ethtool seems to query the settings for PHY0, and use this
      as the base to apply the new settings to the PHY1. This is
      causing the other settings of the PHY 1 to be wrongly
      configured.
      
      The issue is caused by the '_ethtool_get_settings()' API, which
      gets called because of the 'ETHTOOL_GSET' command, is clearing
      the 'cmd' pointer (of type 'struct ethtool_cmd') by calling
      memset. This clears all the parameters (if any) passed for the
      'ETHTOOL_GSET' cmd. So the driver's callback is always invoked
      with 'cmd->phy_address' as '0'.
      
      The '_ethtool_get_settings()' is called from other files in the
      'net/core'. So the fix is applied to the 'ethtool_get_settings()'
      which is only called in the context of the 'ethtool'.
      Signed-off-by: default avatarArun Parameswaran <aparames@broadcom.com>
      Reviewed-by: default avatarRay Jui <rjui@broadcom.com>
      Reviewed-by: default avatarScott Branden <sbranden@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f96dee13
    • Michael Holzheu's avatar
      test_bpf: Add backward jump test case · fe593844
      Michael Holzheu authored
      Currently the testsuite does not have a test case with a backward jump.
      The s390x JIT (kernel 4.0) had a bug in that area.
      So add one new test case for this now.
      Signed-off-by: default avatarMichael Holzheu <holzheu@linux.vnet.ibm.com>
      Signed-off-by: default avatarAlexei Starovoitov <ast@plumgrid.com>
      Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fe593844
    • Thadeu Lima de Souza Cascardo's avatar
      bridge: fix parsing of MLDv2 reports · 47cc84ce
      Thadeu Lima de Souza Cascardo authored
      When more than a multicast address is present in a MLDv2 report, all but
      the first address is ignored, because the code breaks out of the loop if
      there has not been an error adding that address.
      
      This has caused failures when two guests connected through the bridge
      tried to communicate using IPv6. Neighbor discoveries would not be
      transmitted to the other guest when both used a link-local address and a
      static address.
      
      This only happens when there is a MLDv2 querier in the network.
      
      The fix will only break out of the loop when there is a failure adding a
      multicast address.
      
      The mdb before the patch:
      
      dev ovirtmgmt port vnet0 grp ff02::1:ff7d:6603 temp
      dev ovirtmgmt port vnet1 grp ff02::1:ff7d:6604 temp
      dev ovirtmgmt port bond0.86 grp ff02::2 temp
      
      After the patch:
      
      dev ovirtmgmt port vnet0 grp ff02::1:ff7d:6603 temp
      dev ovirtmgmt port vnet1 grp ff02::1:ff7d:6604 temp
      dev ovirtmgmt port bond0.86 grp ff02::fb temp
      dev ovirtmgmt port bond0.86 grp ff02::2 temp
      dev ovirtmgmt port bond0.86 grp ff02::d temp
      dev ovirtmgmt port vnet0 grp ff02::1:ff00:76 temp
      dev ovirtmgmt port bond0.86 grp ff02::16 temp
      dev ovirtmgmt port vnet1 grp ff02::1:ff00:77 temp
      dev ovirtmgmt port bond0.86 grp ff02::1:ff00:def temp
      dev ovirtmgmt port bond0.86 grp ff02::1:ffa1:40bf temp
      
      Fixes: 08b202b6 ("bridge br_multicast: IPv6 MLD support.")
      Reported-by: default avatarRik Theys <Rik.Theys@esat.kuleuven.be>
      Signed-off-by: default avatarThadeu Lima de Souza Cascardo <cascardo@redhat.com>
      Tested-by: default avatarRik Theys <Rik.Theys@esat.kuleuven.be>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      47cc84ce
    • Nathan Sullivan's avatar
      ARM: zynq: DT: Use the zynq binding with macb · 9eeb5161
      Nathan Sullivan authored
      Use the new zynq binding for macb ethernet, since it will disable half
      duplex gigabit like the Zynq TRM says to do.
      Signed-off-by: default avatarNathan Sullivan <nathan.sullivan@ni.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9eeb5161
    • Nathan Sullivan's avatar
      net: macb: Disable half duplex gigabit on Zynq · 222ca8e0
      Nathan Sullivan authored
      According to the Zynq TRM, gigabit half duplex is not supported.  Add a
      new cap and compatible string so Zynq can avoid advertising that mode.
      Signed-off-by: default avatarNathan Sullivan <nathan.sullivan@ni.com>
      Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      222ca8e0
    • Nathan Sullivan's avatar
    • Michal Kubeček's avatar
      ipv4: fill in table id when replacing a route · d4e64c29
      Michal Kubeček authored
      When replacing an IPv4 route, tb_id member of the new fib_alias
      structure is not set in the replace code path so that the new route is
      ignored.
      
      Fixes: 0ddcf43d ("ipv4: FIB Local/MAIN table collapse")
      Signed-off-by: default avatarMichal Kubecek <mkubecek@suse.cz>
      Acked-by: default avatarAlexander Duyck <alexander.h.duyck@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d4e64c29
    • Bjørn Mork's avatar
      cdc_ncm: Fix tx_bytes statistics · 44f6731d
      Bjørn Mork authored
      The tx_curr_frame_payload field is u32. When we try to calculate a
      small negative delta based on it, we end up with a positive integer
      close to 2^32 instead.  So the tx_bytes pointer increases by about
      2^32 for every transmitted frame.
      
      Fix by calculating the delta as a signed long.
      
      Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
      Reported-by: default avatarFlorian Bruhin <me@the-compiler.org>
      Fixes: 7a1e890e ("usbnet: Fix tx_bytes statistic running backward in cdc_ncm")
      Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      44f6731d
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf · 572152ad
      David S. Miller authored
      Pablo Neira Ayuso says:
      
      ====================
      Netfilter fixes for net
      
      The following patchset contain Netfilter fixes for your net tree, they are:
      
      1) Fix a race in nfnetlink_log and nfnetlink_queue that can lead to a crash.
         This problem is due to wrong order in the per-net registration and netlink
         socket events. Patch from Francesco Ruggeri.
      
      2) Make sure that counters that userspace pass us are higher than 0 in all the
         x_tables frontends. Discovered via Trinity, patch from Dave Jones.
      
      3) Revert a patch for br_netfilter to rely on the conntrack status bits. This
         breaks stateless IPv6 NAT transformations. Patch from Florian Westphal.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      572152ad
    • Eric W. Biederman's avatar
      ipv4: Avoid crashing in ip_error · 381c759d
      Eric W. Biederman authored
      ip_error does not check if in_dev is NULL before dereferencing it.
      
      IThe following sequence of calls is possible:
      CPU A                          CPU B
      ip_rcv_finish
          ip_route_input_noref()
              ip_route_input_slow()
                                     inetdev_destroy()
          dst_input()
      
      With the result that a network device can be destroyed while processing
      an input packet.
      
      A crash was triggered with only unicast packets in flight, and
      forwarding enabled on the only network device.   The error condition
      was created by the removal of the network device.
      
      As such it is likely the that error code was -EHOSTUNREACH, and the
      action taken by ip_error (if in_dev had been accessible) would have
      been to not increment any counters and to have tried and likely failed
      to send an icmp error as the network device is going away.
      
      Therefore handle this weird case by just dropping the packet if
      !in_dev.  It will result in dropping the packet sooner, and will not
      result in an actual change of behavior.
      
      Fixes: 251da413 ("ipv4: Cache ip_error() routes even when not forwarding.")
      Reported-by: default avatarVittorio Gambaletta <linuxbugs@vittgam.net>
      Tested-by: default avatarVittorio Gambaletta <linuxbugs@vittgam.net>
      Signed-off-by: default avatarVittorio Gambaletta <linuxbugs@vittgam.net>
      Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
      Acked-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      381c759d
    • Jiri Pirko's avatar
      flow_dissector: do not break if ports are not needed in flowlabel · 12c227ec
      Jiri Pirko authored
      This restored previous behaviour. If caller does not want ports to be
      filled, we should not break.
      
      Fixes: 06635a35 ("flow_dissect: use programable dissector in skb_flow_dissect and friends")
      Signed-off-by: default avatarJiri Pirko <jiri@resnulli.us>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      12c227ec
    • Eric Dumazet's avatar
      tcp: fix a potential deadlock in tcp_get_info() · d654976c
      Eric Dumazet authored
      Taking socket spinlock in tcp_get_info() can deadlock, as
      inet_diag_dump_icsk() holds the &hashinfo->ehash_locks[i],
      while packet processing can use the reverse locking order.
      
      We could avoid this locking for TCP_LISTEN states, but lockdep would
      certainly get confused as all TCP sockets share same lockdep classes.
      
      [  523.722504] ======================================================
      [  523.728706] [ INFO: possible circular locking dependency detected ]
      [  523.734990] 4.1.0-dbg-DEV #1676 Not tainted
      [  523.739202] -------------------------------------------------------
      [  523.745474] ss/18032 is trying to acquire lock:
      [  523.750002]  (slock-AF_INET){+.-...}, at: [<ffffffff81669d44>] tcp_get_info+0x2c4/0x360
      [  523.758129]
      [  523.758129] but task is already holding lock:
      [  523.763968]  (&(&hashinfo->ehash_locks[i])->rlock){+.-...}, at: [<ffffffff816bcb75>] inet_diag_dump_icsk+0x1d5/0x6c0
      [  523.774661]
      [  523.774661] which lock already depends on the new lock.
      [  523.774661]
      [  523.782850]
      [  523.782850] the existing dependency chain (in reverse order) is:
      [  523.790326]
      -> #1 (&(&hashinfo->ehash_locks[i])->rlock){+.-...}:
      [  523.796599]        [<ffffffff811126bb>] lock_acquire+0xbb/0x270
      [  523.802565]        [<ffffffff816f5868>] _raw_spin_lock+0x38/0x50
      [  523.808628]        [<ffffffff81665af8>] __inet_hash_nolisten+0x78/0x110
      [  523.815273]        [<ffffffff816819db>] tcp_v4_syn_recv_sock+0x24b/0x350
      [  523.822067]        [<ffffffff81684d41>] tcp_check_req+0x3c1/0x500
      [  523.828199]        [<ffffffff81682d09>] tcp_v4_do_rcv+0x239/0x3d0
      [  523.834331]        [<ffffffff816842fe>] tcp_v4_rcv+0xa8e/0xc10
      [  523.840202]        [<ffffffff81658fa3>] ip_local_deliver_finish+0x133/0x3e0
      [  523.847214]        [<ffffffff81659a9a>] ip_local_deliver+0xaa/0xc0
      [  523.853440]        [<ffffffff816593b8>] ip_rcv_finish+0x168/0x5c0
      [  523.859624]        [<ffffffff81659db7>] ip_rcv+0x307/0x420
      
      Lets use u64_sync infrastructure instead. As a bonus, 64bit
      arches get optimized, as these are nop for them.
      
      Fixes: 0df48c26 ("tcp: add tcpi_bytes_acked to tcp_info")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d654976c