1. 07 Apr, 2019 8 commits
  2. 06 Apr, 2019 1 commit
    • Heiner Kallweit's avatar
      r8169: disable tx interrupt coalescing on RTL8168 · eb94dc9a
      Heiner Kallweit authored
      In contrast to switching rx irq coalescing off what fixed an issue,
      switching tx irq coalescing off is merely a latency optimization,
      therefore net-next. As part of this change:
      
      - Remove INTT_0 .. INTT_3 constants, they aren't used.
      
      - Remove comment in rtl_hw_start_8169(), we now have a detailed
        description by the code in rtl_set_coalesce().
      
      - Due to switching irq coalescing off per default we don't need the
        initialization in rtl_hw_start_8168(). If ethtool is used to switch
        on coalescing then rtl_set_coalesce() will configure this register.
      
      For the sake of completeness: This patch just changes the default.
      Users still have the option to configure irq coalescing via ethtool.
      Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      eb94dc9a
  3. 05 Apr, 2019 31 commits
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · f83f7151
      David S. Miller authored
      Minor comment merge conflict in mlx5.
      
      Staging driver has a fixup due to the skb->xmit_more changes
      in 'net-next', but was removed in 'net'.
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f83f7151
    • Linus Torvalds's avatar
      Merge tag 'mm-compaction-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mel/linux · 7f46774c
      Linus Torvalds authored
      Pull mm/compaction fixes from Mel Gorman:
       "The merge window for 5.1 introduced a number of compaction-related
        patches. with intermittent reports of corruption and functional
        issues. The bugs are due to sloopy checking of zone boundaries and a
        corner case where invalid indexes are used to access the free lists.
      
        Reports are not common but at least two users and 0-day have tripped
        over them. There is a chance that one of the syzbot reports are
        related but it has not been confirmed properly.
      
        The normal submission path is with Andrew but there have been some
        delays and I consider them urgent enough that they should be picked up
        before RC4 to avoid duplicate reports.
      
        All of these have been successfully tested on older RC windows. This
        will make this branch look like a rebase but in fact, they've simply
        been lifted again from Andrew's tree and placed on a fresh branch.
        I've no reason to believe that this has invalidated the testing given
        the lack of change in compaction and the nature of the fixes"
      
      * tag 'mm-compaction-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mel/linux:
        mm/compaction.c: abort search if isolation fails
        mm/compaction.c: correct zone boundary handling when resetting pageblock skip hints
      7f46774c
    • Greg Kroah-Hartman's avatar
      tty: mark Siemens R3964 line discipline as BROKEN · c7084edc
      Greg Kroah-Hartman authored
      The n_r3964 line discipline driver was written in a different time, when
      SMP machines were rare, and users were trusted to do the right thing.
      Since then, the world has moved on but not this code, it has stayed
      rooted in the past with its lovely hand-crafted list structures and
      loads of "interesting" race conditions all over the place.
      
      After attempting to clean up most of the issues, I just gave up and am
      now marking the driver as BROKEN so that hopefully someone who has this
      hardware will show up out of the woodwork (I know you are out there!)
      and will help with debugging a raft of changes that I had laying around
      for the code, but was too afraid to commit as odds are they would break
      things.
      
      Many thanks to Jann and Linus for pointing out the initial problems in
      this codebase, as well as many reviews of my attempts to fix the issues.
      It was a case of whack-a-mole, and as you can see, the mole won.
      Reported-by: default avatarJann Horn <jannh@google.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      c7084edc
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-2019-04-05' of git://anongit.freedesktop.org/drm/drm · ea2cec24
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Pretty quiet week, just some amdgpu and i915 fixes.
      
        i915:
         - deadlock fix
         - gvt fixes
      
        amdgpu:
         - PCIE dpm feature fix
         - Powerplay fixes"
      
      * tag 'drm-fixes-2019-04-05' of git://anongit.freedesktop.org/drm/drm:
        drm/i915/gvt: Fix kerneldoc typo for intel_vgpu_emulate_hotplug
        drm/i915/gvt: Correct the calculation of plane size
        drm/amdgpu: remove unnecessary rlc reset function on gfx9
        drm/i915: Always backoff after a drm_modeset_lock() deadlock
        drm/i915/gvt: do not let pin count of shadow mm go negative
        drm/i915/gvt: do not deliver a workload if its creation fails
        drm/amd/display: VBIOS can't be light up HDMI when restart system
        drm/amd/powerplay: fix possible hang with 3+ 4K monitors
        drm/amd/powerplay: correct data type to avoid overflow
        drm/amd/powerplay: add ECC feature bit
        drm/amd/amdgpu: fix PCIe dpm feature issue (v3)
      ea2cec24
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 0548740e
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Several hash table refcount fixes in batman-adv, from Sven
          Eckelmann.
      
       2) Use after free in bpf_evict_inode(), from Daniel Borkmann.
      
       3) Fix mdio bus registration in ixgbe, from Ivan Vecera.
      
       4) Unbounded loop in __skb_try_recv_datagram(), from Paolo Abeni.
      
       5) ila rhashtable corruption fix from Herbert Xu.
      
       6) Don't allow upper-devices to be added to vrf devices, from Sabrina
          Dubroca.
      
       7) Add qmi_wwan device ID for Olicard 600, from Bjørn Mork.
      
       8) Don't leave skb->next poisoned in __netif_receive_skb_list_ptype,
          from Alexander Lobakin.
      
       9) Missing IDR checks in mlx5 driver, from Aditya Pakki.
      
      10) Fix false connection termination in ktls, from Jakub Kicinski.
      
      11) Work around some ASPM issues with r8169 by disabling rx interrupt
          coalescing on certain chips. From Heiner Kallweit.
      
      12) Properly use per-cpu qstat values on NOLOCK qdiscs, from Paolo
          Abeni.
      
      13) Fully initialize sockaddr_in structures in SCTP, from Xin Long.
      
      14) Various BPF flow dissector fixes from Stanislav Fomichev.
      
      15) Divide by zero in act_sample, from Davide Caratti.
      
      16) Fix bridging multicast regression introduced by rhashtable
          conversion, from Nikolay Aleksandrov.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (106 commits)
        ibmvnic: Fix completion structure initialization
        ipv6: sit: reset ip header pointer in ipip6_rcv
        net: bridge: always clear mcast matching struct on reports and leaves
        libcxgb: fix incorrect ppmax calculation
        vlan: conditional inclusion of FCoE hooks to match netdevice.h and bnx2x
        sch_cake: Make sure we can write the IP header before changing DSCP bits
        sch_cake: Use tc_skb_protocol() helper for getting packet protocol
        tcp: Ensure DCTCP reacts to losses
        net/sched: act_sample: fix divide by zero in the traffic path
        net: thunderx: fix NULL pointer dereference in nicvf_open/nicvf_stop
        net: hns: Fix sparse: some warnings in HNS drivers
        net: hns: Fix WARNING when remove HNS driver with SMMU enabled
        net: hns: fix ICMP6 neighbor solicitation messages discard problem
        net: hns: Fix probabilistic memory overwrite when HNS driver initialized
        net: hns: Use NAPI_POLL_WEIGHT for hns driver
        net: hns: fix KASAN: use-after-free in hns_nic_net_xmit_hw()
        flow_dissector: rst'ify documentation
        ipv6: Fix dangling pointer when ipv6 fragment
        net-gro: Fix GRO flush when receiving a GSO packet.
        flow_dissector: document BPF flow dissector environment
        ...
      0548740e
    • Thomas Falcon's avatar
      ibmvnic: Fix completion structure initialization · bbd669a8
      Thomas Falcon authored
      Fix device initialization completion handling for vNIC adapters.
      Initialize the completion structure on probe and reinitialize when needed.
      This also fixes a race condition during kdump where the driver can attempt
      to access the completion struct before it is initialized:
      
      Unable to handle kernel paging request for data at address 0x00000000
      Faulting instruction address: 0xc0000000081acbe0
      Oops: Kernel access of bad area, sig: 11 [#1]
      LE SMP NR_CPUS=2048 NUMA pSeries
      Modules linked in: ibmvnic(+) ibmveth sunrpc overlay squashfs loop
      CPU: 19 PID: 301 Comm: systemd-udevd Not tainted 4.18.0-64.el8.ppc64le #1
      NIP:  c0000000081acbe0 LR: c0000000081ad964 CTR: c0000000081ad900
      REGS: c000000027f3f990 TRAP: 0300   Not tainted  (4.18.0-64.el8.ppc64le)
      MSR:  800000010280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE,TM[E]> CR: 28228288  XER: 00000006
      CFAR: c000000008008934 DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 1
      GPR00: c0000000081ad964 c000000027f3fc10 c0000000095b5800 c0000000221b4e58
      GPR04: 0000000000000003 0000000000000001 000049a086918581 00000000000000d4
      GPR08: 0000000000000007 0000000000000000 ffffffffffffffe8 d0000000014dde28
      GPR12: c0000000081ad900 c000000009a00c00 0000000000000001 0000000000000100
      GPR16: 0000000000000038 0000000000000007 c0000000095e2230 0000000000000006
      GPR20: 0000000000400140 0000000000000001 c00000000910c880 0000000000000000
      GPR24: 0000000000000000 0000000000000006 0000000000000000 0000000000000003
      GPR28: 0000000000000001 0000000000000001 c0000000221b4e60 c0000000221b4e58
      NIP [c0000000081acbe0] __wake_up_locked+0x50/0x100
      LR [c0000000081ad964] complete+0x64/0xa0
      Call Trace:
      [c000000027f3fc10] [c000000027f3fc60] 0xc000000027f3fc60 (unreliable)
      [c000000027f3fc60] [c0000000081ad964] complete+0x64/0xa0
      [c000000027f3fca0] [d0000000014dad58] ibmvnic_handle_crq+0xce0/0x1160 [ibmvnic]
      [c000000027f3fd50] [d0000000014db270] ibmvnic_tasklet+0x98/0x130 [ibmvnic]
      [c000000027f3fda0] [c00000000813f334] tasklet_action_common.isra.3+0xc4/0x1a0
      [c000000027f3fe00] [c000000008cd13f4] __do_softirq+0x164/0x400
      [c000000027f3fef0] [c00000000813ed64] irq_exit+0x184/0x1c0
      [c000000027f3ff20] [c0000000080188e8] __do_irq+0xb8/0x210
      [c000000027f3ff90] [c00000000802d0a4] call_do_irq+0x14/0x24
      [c000000026a5b010] [c000000008018adc] do_IRQ+0x9c/0x130
      [c000000026a5b060] [c000000008008ce4] hardware_interrupt_common+0x114/0x120
      Signed-off-by: default avatarThomas Falcon <tlfalcon@linux.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      bbd669a8
    • Lorenzo Bianconi's avatar
      ipv6: sit: reset ip header pointer in ipip6_rcv · bb9bd814
      Lorenzo Bianconi authored
      ipip6 tunnels run iptunnel_pull_header on received skbs. This can
      determine the following use-after-free accessing iph pointer since
      the packet will be 'uncloned' running pskb_expand_head if it is a
      cloned gso skb (e.g if the packet has been sent though a veth device)
      
      [  706.369655] BUG: KASAN: use-after-free in ipip6_rcv+0x1678/0x16e0 [sit]
      [  706.449056] Read of size 1 at addr ffffe01b6bd855f5 by task ksoftirqd/1/=
      [  706.669494] Hardware name: HPE ProLiant m400 Server/ProLiant m400 Server, BIOS U02 08/19/2016
      [  706.771839] Call trace:
      [  706.801159]  dump_backtrace+0x0/0x2f8
      [  706.845079]  show_stack+0x24/0x30
      [  706.884833]  dump_stack+0xe0/0x11c
      [  706.925629]  print_address_description+0x68/0x260
      [  706.982070]  kasan_report+0x178/0x340
      [  707.025995]  __asan_report_load1_noabort+0x30/0x40
      [  707.083481]  ipip6_rcv+0x1678/0x16e0 [sit]
      [  707.132623]  tunnel64_rcv+0xd4/0x200 [tunnel4]
      [  707.185940]  ip_local_deliver_finish+0x3b8/0x988
      [  707.241338]  ip_local_deliver+0x144/0x470
      [  707.289436]  ip_rcv_finish+0x43c/0x14b0
      [  707.335447]  ip_rcv+0x628/0x1138
      [  707.374151]  __netif_receive_skb_core+0x1670/0x2600
      [  707.432680]  __netif_receive_skb+0x28/0x190
      [  707.482859]  process_backlog+0x1d0/0x610
      [  707.529913]  net_rx_action+0x37c/0xf68
      [  707.574882]  __do_softirq+0x288/0x1018
      [  707.619852]  run_ksoftirqd+0x70/0xa8
      [  707.662734]  smpboot_thread_fn+0x3a4/0x9e8
      [  707.711875]  kthread+0x2c8/0x350
      [  707.750583]  ret_from_fork+0x10/0x18
      
      [  707.811302] Allocated by task 16982:
      [  707.854182]  kasan_kmalloc.part.1+0x40/0x108
      [  707.905405]  kasan_kmalloc+0xb4/0xc8
      [  707.948291]  kasan_slab_alloc+0x14/0x20
      [  707.994309]  __kmalloc_node_track_caller+0x158/0x5e0
      [  708.053902]  __kmalloc_reserve.isra.8+0x54/0xe0
      [  708.108280]  __alloc_skb+0xd8/0x400
      [  708.150139]  sk_stream_alloc_skb+0xa4/0x638
      [  708.200346]  tcp_sendmsg_locked+0x818/0x2b90
      [  708.251581]  tcp_sendmsg+0x40/0x60
      [  708.292376]  inet_sendmsg+0xf0/0x520
      [  708.335259]  sock_sendmsg+0xac/0xf8
      [  708.377096]  sock_write_iter+0x1c0/0x2c0
      [  708.424154]  new_sync_write+0x358/0x4a8
      [  708.470162]  __vfs_write+0xc4/0xf8
      [  708.510950]  vfs_write+0x12c/0x3d0
      [  708.551739]  ksys_write+0xcc/0x178
      [  708.592533]  __arm64_sys_write+0x70/0xa0
      [  708.639593]  el0_svc_handler+0x13c/0x298
      [  708.686646]  el0_svc+0x8/0xc
      
      [  708.739019] Freed by task 17:
      [  708.774597]  __kasan_slab_free+0x114/0x228
      [  708.823736]  kasan_slab_free+0x10/0x18
      [  708.868703]  kfree+0x100/0x3d8
      [  708.905320]  skb_free_head+0x7c/0x98
      [  708.948204]  skb_release_data+0x320/0x490
      [  708.996301]  pskb_expand_head+0x60c/0x970
      [  709.044399]  __iptunnel_pull_header+0x3b8/0x5d0
      [  709.098770]  ipip6_rcv+0x41c/0x16e0 [sit]
      [  709.146873]  tunnel64_rcv+0xd4/0x200 [tunnel4]
      [  709.200195]  ip_local_deliver_finish+0x3b8/0x988
      [  709.255596]  ip_local_deliver+0x144/0x470
      [  709.303692]  ip_rcv_finish+0x43c/0x14b0
      [  709.349705]  ip_rcv+0x628/0x1138
      [  709.388413]  __netif_receive_skb_core+0x1670/0x2600
      [  709.446943]  __netif_receive_skb+0x28/0x190
      [  709.497120]  process_backlog+0x1d0/0x610
      [  709.544169]  net_rx_action+0x37c/0xf68
      [  709.589131]  __do_softirq+0x288/0x1018
      
      [  709.651938] The buggy address belongs to the object at ffffe01b6bd85580
                      which belongs to the cache kmalloc-1024 of size 1024
      [  709.804356] The buggy address is located 117 bytes inside of
                      1024-byte region [ffffe01b6bd85580, ffffe01b6bd85980)
      [  709.946340] The buggy address belongs to the page:
      [  710.003824] page:ffff7ff806daf600 count:1 mapcount:0 mapping:ffffe01c4001f600 index:0x0
      [  710.099914] flags: 0xfffff8000000100(slab)
      [  710.149059] raw: 0fffff8000000100 dead000000000100 dead000000000200 ffffe01c4001f600
      [  710.242011] raw: 0000000000000000 0000000000380038 00000001ffffffff 0000000000000000
      [  710.334966] page dumped because: kasan: bad access detected
      
      Fix it resetting iph pointer after iptunnel_pull_header
      
      Fixes: a09a4c8d ("tunnels: Remove encapsulation offloads on decap")
      Tested-by: default avatarJianlin Shi <jishi@redhat.com>
      Signed-off-by: default avatarLorenzo Bianconi <lorenzo.bianconi@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      bb9bd814
    • David S. Miller's avatar
      Merge branch 'tipc-improve-TIPC-unicast-link-throughput' · 8f4043f1
      David S. Miller authored
      Tuong Lien says:
      
      ====================
      tipc: improve TIPC unicast link throughput
      
      The series introduces an algorithm to improve TIPC throughput especially
      in terms of packet loss, also tries to reduce packet duplication due to
      overactive NACK sending mechanism.
      
      The link failover situation is also covered by the patches.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8f4043f1
    • Tuong Lien's avatar
      tipc: adapt link failover for new Gap-ACK algorithm · 58ee86b8
      Tuong Lien authored
      In commit 0ae955e2656d ("tipc: improve TIPC throughput by Gap ACK
      blocks"), we enhance the link transmq by releasing as many packets as
      possible with the multi-ACKs from peer node. This also means the queue
      is now non-linear and the peer link deferdq becomes vital.
      
      Whereas, in the case of link failover, all messages in the link transmq
      need to be transmitted as tunnel messages in such a way that message
      sequentiality and cardinality per sender is preserved. This requires us
      to maintain the link deferdq somehow, so that when the tunnel messages
      arrive, the inner user messages along with the ones in the deferdq will
      be delivered to upper layer correctly.
      
      The commit accomplishes this by defining a new queue in the TIPC link
      structure to hold the old link deferdq when link failover happens and
      process it upon receipt of tunnel messages.
      
      Also, in the case of link syncing, the link deferdq will not be purged
      to avoid unnecessary retransmissions that in the worst case will fail
      because the packets might have been freed on the sending side.
      Acked-by: default avatarYing Xue <ying.xue@windriver.com>
      Acked-by: default avatarJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: default avatarTuong Lien <tuong.t.lien@dektech.com.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      58ee86b8
    • Tuong Lien's avatar
      tipc: reduce duplicate packets for unicast traffic · 382f598f
      Tuong Lien authored
      For unicast transmission, the current NACK sending althorithm is over-
      active that forces the sending side to retransmit a packet that is not
      really lost but just arrived at the receiving side with some delay, or
      even retransmit same packets that have already been retransmitted
      before. As a result, many duplicates are observed also under normal
      condition, ie. without packet loss.
      
      One example case is: node1 transmits 1 2 3 4 10 5 6 7 8 9, when node2
      receives packet #10, it puts into the deferdq. When the packet #5 comes
      it sends NACK with gap [6 - 9]. However, shortly after that, when
      packet #6 arrives, it pulls out packet #10 from the deferfq, but it is
      still out of order, so it makes another NACK with gap [7 - 9] and so on
      ... Finally, node1 has to retransmit the packets 5 6 7 8 9 a number of
      times, but in fact all the packets are not lost at all, so duplicates!
      
      This commit reduces duplicates by changing the condition to send NACK,
      also restricting the retransmissions on individual packets via a timer
      of about 1ms. However, it also needs to say that too tricky condition
      for NACKs or too long timeout value for retransmissions will result in
      performance reducing! The criterias in this commit are found to be
      effective for both the requirements to reduce duplicates but not affect
      performance.
      
      The tipc_link_rcv() is also improved to only dequeue skb from the link
      deferdq if it is expected (ie. its seqno <= rcv_nxt).
      Acked-by: default avatarYing Xue <ying.xue@windriver.com>
      Acked-by: default avatarJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: default avatarTuong Lien <tuong.t.lien@dektech.com.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      382f598f
    • Tuong Lien's avatar
      tipc: improve TIPC throughput by Gap ACK blocks · 9195948f
      Tuong Lien authored
      During unicast link transmission, it's observed very often that because
      of one or a few lost/dis-ordered packets, the sending side will fastly
      reach the send window limit and must wait for the packets to be arrived
      at the receiving side or in the worst case, a retransmission must be
      done first. The sending side cannot release a lot of subsequent packets
      in its transmq even though all of them might have already been received
      by the receiving side.
      That is, one or two packets dis-ordered/lost and dozens of packets have
      to wait, this obviously reduces the overall throughput!
      
      This commit introduces an algorithm to overcome this by using "Gap ACK
      blocks". Basically, a Gap ACK block will consist of <ack, gap> numbers
      that describes the link deferdq where packets have been got by the
      receiving side but with gaps, for example:
      
            link deferdq: [1 2 3 4      10 11      13 14 15       20]
      --> Gap ACK blocks:       <4, 5>,   <11, 1>,      <15, 4>, <20, 0>
      
      The Gap ACK blocks will be sent to the sending side along with the
      traditional ACK or NACK message. Immediately when receiving the message
      the sending side will now not only release from its transmq the packets
      ack-ed by the ACK but also by the Gap ACK blocks! So, more packets can
      be enqueued and transmitted.
      In addition, the sending side can now do "multi-retransmissions"
      according to the Gaps reported in the Gap ACK blocks.
      
      The new algorithm as verified helps greatly improve the TIPC throughput
      especially under packet loss condition.
      
      So far, a maximum of 32 blocks is quite enough without any "Too few Gap
      ACK blocks" reports with a 5.0% packet loss rate, however this number
      can be increased in the furture if needed.
      
      Also, the patch is backward compatible.
      Acked-by: default avatarYing Xue <ying.xue@windriver.com>
      Acked-by: default avatarJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: default avatarTuong Lien <tuong.t.lien@dektech.com.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9195948f
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-5.1-rc4' of... · 8e22ba96
      Linus Torvalds authored
      Merge tag 'riscv-for-linus-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux
      
      Pull RISC-V fixes from Palmer Dabbelt:
       "I dropped the ball a bit here: these patches should all probably have
        been part of rc2, but I wanted to get around to properly testing them
        in the various configurations (qemu32, qeum64, unleashed) first.
      
        Unfortunately I've been traveling and didn't have time to actually do
        that, but since these fix concrete bugs and pass my old set of tests I
        don't want to delay the fixes any longer.
      
        There are four independent fixes here:
      
         - A fix for the rv32 port that corrects the 64-bit user accesor's
           fixup label address.
      
         - A fix for a regression introduced during the merge window that
           broke medlow configurations at run time. This patch also includes a
           fix that disables ftrace for the same set of functions, which was
           found by inspection at the same time.
      
         - A modification of the memory map to avoid overlapping the FIXMAP
           and VMALLOC regions on systems with small memory maps.
      
         - A fix to the module handling code to use the correct syntax for
           probing Kconfig entries.
      
        These have passed my standard test flow, but I didn't have time to
        expand that testing like I said I would"
      
      * tag 'riscv-for-linus-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
        RISC-V: Use IS_ENABLED(CONFIG_CMODEL_MEDLOW)
        RISC-V: Fix FIXMAP_TOP to avoid overlap with VMALLOC area
        RISC-V: Always compile mm/init.c with cmodel=medany and notrace
        riscv: fix accessing 8-byte variable from RV32
      8e22ba96
    • David S. Miller's avatar
      Merge branch 'genphy-ability' · 29502bb1
      David S. Miller authored
      Heiner Kallweit says:
      
      ====================
      net: phy: use generic PHY ability readers if callback get_features isn't set
      
      Meanwhile we have generic functions for reading the abilities of
      Clause 22 / 45 PHY's. This allows to use them as fallback in case
      callback get_features isn't set. Benefit is the reduction of
      boilerplate code in PHY drivers.
      
      v2:
      - adjust a comment in patch 1 to match the code
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      29502bb1
    • Heiner Kallweit's avatar
      net: phy: realtek: remove setting callback get_features and use phylib fallback · 32a069d8
      Heiner Kallweit authored
      Now that phylib uses genphy_read_abilities() as fallback, we don't have
      to set callback get_features any longer.
      Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      32a069d8
    • Heiner Kallweit's avatar
      net: phy: allow a PHY driver to define neither features nor get_features · a1deab17
      Heiner Kallweit authored
      Meanwhile we have generic functions for reading the abilities of
      Clause 22 / 45 PHY's. This allows to use them as fallback in case
      callback get_features isn't set. Benefit is the reduction of
      boilerplate code in PHY drivers.
      
      v2:
      - adjust the comment in phy_driver_register to match the code
      Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a1deab17
    • Nikolay Aleksandrov's avatar
      net: bridge: mcast: remove unused br_ip_equal function · e177163d
      Nikolay Aleksandrov authored
      Since the mcast conversion to rhashtable this function has been unused, so
      remove it.
      Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e177163d
    • Nikolay Aleksandrov's avatar
      net: bridge: always clear mcast matching struct on reports and leaves · 1515a63f
      Nikolay Aleksandrov authored
      We need to be careful and always zero the whole br_ip struct when it is
      used for matching since the rhashtable change. This patch fixes all the
      places which didn't properly clear it which in turn might've caused
      mismatches.
      
      Thanks for the great bug report with reproducing steps and bisection.
      
      Steps to reproduce (from the bug report):
      ip link add br0 type bridge mcast_querier 1
      ip link set br0 up
      
      ip link add v2 type veth peer name v3
      ip link set v2 master br0
      ip link set v2 up
      ip link set v3 up
      ip addr add 3.0.0.2/24 dev v3
      
      ip netns add test
      ip link add v1 type veth peer name v1 netns test
      ip link set v1 master br0
      ip link set v1 up
      ip -n test link set v1 up
      ip -n test addr add 3.0.0.1/24 dev v1
      
      # Multicast receiver
      ip netns exec test socat
      UDP4-RECVFROM:5588,ip-add-membership=224.224.224.224:3.0.0.1,fork -
      
      # Multicast sender
      echo hello | nc -u -s 3.0.0.2 224.224.224.224 5588
      
      Reported-by: liam.mcbirnie@boeing.com
      Fixes: 19e3a9c9 ("net: bridge: convert multicast to generic rhashtable")
      Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1515a63f
    • Linus Torvalds's avatar
      Merge tag 'pm-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 20ad5494
      Linus Torvalds authored
      Pull power management fixes from Rafael Wysocki:
       "These fix up the intel_pstate driver after recent changes to prevent
        it from printing pointless messages and update the turbostat utility
        (mostly fixes and new hardware support).
      
        Specifics:
      
         - Make intel_pstate only load on Intel processors and prevent it from
           printing pointless failure messages (Borislav Petkov).
      
         - Update the turbostat utility:
            * Assorted fixes (Ben Hutchings, Len Brown, Prarit Bhargava).
            * Support for AMD Fam 17h (Zen) RAPL and package power (Calvin
              Walton).
            * Support for Intel Icelake and for systems with more than one die
              per package (Len Brown).
            * Cleanups (Len Brown)"
      
      * tag 'pm-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        cpufreq/intel_pstate: Load only on Intel hardware
        tools/power turbostat: update version number
        tools/power turbostat: Warn on bad ACPI LPIT data
        tools/power turbostat: Add checks for failure of fgets() and fscanf()
        tools/power turbostat: Also read package power on AMD F17h (Zen)
        tools/power turbostat: Add support for AMD Fam 17h (Zen) RAPL
        tools/power turbostat: Do not display an error on systems without a cpufreq driver
        tools/power turbostat: Add Die column
        tools/power turbostat: Add Icelake support
        tools/power turbostat: Cleanup CNL-specific code
        tools/power turbostat: Cleanup CC3-skip code
        tools/power turbostat: Restore ability to execute in topology-order
      20ad5494
    • Linus Torvalds's avatar
      Merge tag 'acpi-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · b512f712
      Linus Torvalds authored
      Pull ACPI fix from Rafael Wysocki:
       "Prevent stale GPE events from triggering spurious system wakeups from
        suspend-to-idle (Furquan Shaikh)"
      
      * tag 'acpi-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        ACPICA: Clear status of GPEs before enabling them
      b512f712
    • Heiner Kallweit's avatar
      Revert "r8169: use netif_receive_skb_list batching" · 448a2413
      Heiner Kallweit authored
      This reverts commit 6578229d.
      netif_receive_skb_list() doesn't support GRO, therefore we may have
      scenarios with decreased performance. See discussion here [0].
      
      [0] https://marc.info/?t=155403847400001&r=1&w=2Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      448a2413
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2019-04-04' of... · 23b5f422
      Dave Airlie authored
      Merge tag 'drm-intel-fixes-2019-04-04' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
      
      Only one fix for DSC (backoff after drm_modeset_lock deadlock)
      and GVT's fixes including vGPU display plane size calculation,
      shadow mm pin count, error recovery path for workload create
      and one kerneldoc fix.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      
      From: Rodrigo Vivi <rodrigo.vivi@intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190404161116.GA14522@intel.com
      23b5f422
    • Tilmans, Olivier (Nokia - BE/Antwerp)'s avatar
      tcp: Accept ECT on SYN in the presence of RFC8311 · f6fee16d
      Linux currently disable ECN for incoming connections when the SYN
      requests ECN and the IP header has ECT(0)/ECT(1) set, as some
      networks were reportedly mangling the ToS byte, hence could later
      trigger false congestion notifications.
      
      RFC8311 §4.3 relaxes RFC3168's requirements such that ECT can be set
      one TCP control packets (including SYNs). The main benefit of this
      is the decreased probability of losing a SYN in a congested
      ECN-capable network (i.e., it avoids the initial 1s timeout).
      Additionally, this allows the development of newer TCP extensions,
      such as AccECN.
      
      This patch relaxes the previous check, by enabling ECN on incoming
      connections using SYN+ECT if at least one bit of the reserved flags
      of the TCP header is set. Such bit would indicate that the sender of
      the SYN is using a newer TCP feature than what the host implements,
      such as AccECN, and is thus implementing RFC8311. This enables
      end-hosts not supporting such extensions to still negociate ECN, and
      to have some of the benefits of using ECN on control packets.
      Signed-off-by: default avatarOlivier Tilmans <olivier.tilmans@nokia-bell-labs.com>
      Suggested-by: default avatarBob Briscoe <research@bobbriscoe.net>
      Cc: Koen De Schepper <koen.de_schepper@nokia-bell-labs.com>
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Acked-by: default avatarNeal Cardwell <ncardwell@google.com>
      Acked-by: default avatarYuchung Cheng <ycheng@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f6fee16d
    • Linus Torvalds's avatar
      Merge tag 'mfd-fixes-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd · 9db6ce4e
      Linus Torvalds authored
      Pull mfd fixes from Lee Jones:
      
       - Fix failed reads due to enabled IRQs when suspended; twl-core
      
       - Fix driver registration when using DT; sprd-sc27xx-spi
      
       - Fix `make allyesconfig` on x86_64; SUN6I_PRCM
      
      * tag 'mfd-fixes-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
        mfd: sun6i-prcm: Allow to compile with COMPILE_TEST
        mfd: sc27xx: Use SoC compatible string for PMIC devices
        mfd: twl-core: Disable IRQ while suspended
      9db6ce4e
    • David S. Miller's avatar
      Merge branch 'net-extend-devlink-port-attrs-with-switch-ID' · 6124d067
      David S. Miller authored
      Jiri Pirko says:
      
      ====================
      net: extend devlink port attrs with switch ID
      
      Extend devlink port attrs to contain switch ID and change drivers that
      register devlink ports to use that.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6124d067
    • Jiri Pirko's avatar
      net: devlink: add warning for ndo_get_port_parent_id set when not needed · 119c0b57
      Jiri Pirko authored
      Currently if the driver registers devlink port instance, he should set
      the devlink port attributes as well. Then the devlink core is able to
      obtain switch id itself, no need for driver to implement the ndo.
      Once all drivers will implement devlink port registration, this ndo
      should be removed. This warning guides new drivers to do things as
      they should be done.
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      119c0b57
    • Jiri Pirko's avatar
      dsa: pass switch ID through devlink_port_attrs_set() · 15b04ace
      Jiri Pirko authored
      Pass the switch ID down the to devlink through devlink_port_attrs_set()
      so it can be used by devlink_compat_switch_id_get(). Leave
      ndo_get_port_parent_id implementation only for legacy.
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      15b04ace
    • Jiri Pirko's avatar
      mlxsw: switch_ib: Pass valid HW id down to mlxsw_core_port_init() · df535f4c
      Jiri Pirko authored
      Obtain HW id and pass it down to mlxsw_core_port_init() as it would be
      used as switch_id in devlink and exposed to user.
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      df535f4c
    • Jiri Pirko's avatar
      nfp: remove ndo_get_port_parent_id implementation · c25f08ac
      Jiri Pirko authored
      Remove implementation of get_port_parent_id ndo and rely on core calling
      into devlink for the information directly.
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Reviewed-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c25f08ac
    • Jiri Pirko's avatar
      nfp: pass switch ID through devlink_port_attrs_set() · 1b15c902
      Jiri Pirko authored
      Pass the switch ID down the to devlink through devlink_port_attrs_set()
      so it can be used by devlink_compat_switch_id_get().
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Reviewed-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1b15c902
    • Jiri Pirko's avatar
      bnxt: remove ndo_get_port_parent_id implementation for physical ports · 56d9f4e8
      Jiri Pirko authored
      Remove implementation of get_port_parent_id ndo and rely on core calling
      into devlink for the information directly.
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      56d9f4e8
    • Jiri Pirko's avatar
      bnxt: pass switch ID through devlink_port_attrs_set() · 6605a226
      Jiri Pirko authored
      Pass the switch ID down the to devlink through devlink_port_attrs_set()
      so it can be used by devlink_compat_switch_id_get().
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6605a226