1. 24 Jun, 2020 5 commits
  2. 21 Jun, 2020 7 commits
    • Rob Gill's avatar
      net: Add MODULE_DESCRIPTION entries to network modules · 67c20de3
      Rob Gill authored
      The user tool modinfo is used to get information on kernel modules, including a
      description where it is available.
      
      This patch adds a brief MODULE_DESCRIPTION to the following modules:
      
      9p
      drop_monitor
      esp4_offload
      esp6_offload
      fou
      fou6
      ila
      sch_fq
      sch_fq_codel
      sch_hhf
      Signed-off-by: default avatarRob Gill <rrobgill@protonmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      67c20de3
    • David Howells's avatar
      rxrpc: Fix notification call on completion of discarded calls · 0041cd5a
      David Howells authored
      When preallocated service calls are being discarded, they're passed to
      ->discard_new_call() to have the caller clean up any attached higher-layer
      preallocated pieces before being marked completed.  However, the act of
      marking them completed now invokes the call's notification function - which
      causes a problem because that function might assume that the previously
      freed pieces of memory are still there.
      
      Fix this by setting a dummy notification function on the socket after
      calling ->discard_new_call().
      
      This results in the following kasan message when the kafs module is
      removed.
      
      ==================================================================
      BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 fs/afs/rxrpc.c:707
      Write of size 1 at addr ffff8880946c39e4 by task kworker/u4:1/21
      
      CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.8.0-rc1-syzkaller #0
      Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
      Workqueue: netns cleanup_net
      Call Trace:
       __dump_stack lib/dump_stack.c:77 [inline]
       dump_stack+0x18f/0x20d lib/dump_stack.c:118
       print_address_description.constprop.0.cold+0xd3/0x413 mm/kasan/report.c:383
       __kasan_report mm/kasan/report.c:513 [inline]
       kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
       afs_wake_up_async_call+0x6aa/0x770 fs/afs/rxrpc.c:707
       rxrpc_notify_socket+0x1db/0x5d0 net/rxrpc/recvmsg.c:40
       __rxrpc_set_call_completion.part.0+0x172/0x410 net/rxrpc/recvmsg.c:76
       __rxrpc_call_completed net/rxrpc/recvmsg.c:112 [inline]
       rxrpc_call_completed+0xca/0xf0 net/rxrpc/recvmsg.c:111
       rxrpc_discard_prealloc+0x781/0xab0 net/rxrpc/call_accept.c:233
       rxrpc_listen+0x147/0x360 net/rxrpc/af_rxrpc.c:245
       afs_close_socket+0x95/0x320 fs/afs/rxrpc.c:110
       afs_net_exit+0x1bc/0x310 fs/afs/main.c:155
       ops_exit_list.isra.0+0xa8/0x150 net/core/net_namespace.c:186
       cleanup_net+0x511/0xa50 net/core/net_namespace.c:603
       process_one_work+0x965/0x1690 kernel/workqueue.c:2269
       worker_thread+0x96/0xe10 kernel/workqueue.c:2415
       kthread+0x3b5/0x4a0 kernel/kthread.c:291
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
      
      Allocated by task 6820:
       save_stack+0x1b/0x40 mm/kasan/common.c:48
       set_track mm/kasan/common.c:56 [inline]
       __kasan_kmalloc mm/kasan/common.c:494 [inline]
       __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467
       kmem_cache_alloc_trace+0x153/0x7d0 mm/slab.c:3551
       kmalloc include/linux/slab.h:555 [inline]
       kzalloc include/linux/slab.h:669 [inline]
       afs_alloc_call+0x55/0x630 fs/afs/rxrpc.c:141
       afs_charge_preallocation+0xe9/0x2d0 fs/afs/rxrpc.c:757
       afs_open_socket+0x292/0x360 fs/afs/rxrpc.c:92
       afs_net_init+0xa6c/0xe30 fs/afs/main.c:125
       ops_init+0xaf/0x420 net/core/net_namespace.c:151
       setup_net+0x2de/0x860 net/core/net_namespace.c:341
       copy_net_ns+0x293/0x590 net/core/net_namespace.c:482
       create_new_namespaces+0x3fb/0xb30 kernel/nsproxy.c:110
       unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:231
       ksys_unshare+0x43d/0x8e0 kernel/fork.c:2983
       __do_sys_unshare kernel/fork.c:3051 [inline]
       __se_sys_unshare kernel/fork.c:3049 [inline]
       __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3049
       do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
       entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      Freed by task 21:
       save_stack+0x1b/0x40 mm/kasan/common.c:48
       set_track mm/kasan/common.c:56 [inline]
       kasan_set_free_info mm/kasan/common.c:316 [inline]
       __kasan_slab_free+0xf7/0x140 mm/kasan/common.c:455
       __cache_free mm/slab.c:3426 [inline]
       kfree+0x109/0x2b0 mm/slab.c:3757
       afs_put_call+0x585/0xa40 fs/afs/rxrpc.c:190
       rxrpc_discard_prealloc+0x764/0xab0 net/rxrpc/call_accept.c:230
       rxrpc_listen+0x147/0x360 net/rxrpc/af_rxrpc.c:245
       afs_close_socket+0x95/0x320 fs/afs/rxrpc.c:110
       afs_net_exit+0x1bc/0x310 fs/afs/main.c:155
       ops_exit_list.isra.0+0xa8/0x150 net/core/net_namespace.c:186
       cleanup_net+0x511/0xa50 net/core/net_namespace.c:603
       process_one_work+0x965/0x1690 kernel/workqueue.c:2269
       worker_thread+0x96/0xe10 kernel/workqueue.c:2415
       kthread+0x3b5/0x4a0 kernel/kthread.c:291
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
      
      The buggy address belongs to the object at ffff8880946c3800
       which belongs to the cache kmalloc-1k of size 1024
      The buggy address is located 484 bytes inside of
       1024-byte region [ffff8880946c3800, ffff8880946c3c00)
      The buggy address belongs to the page:
      page:ffffea000251b0c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0
      flags: 0xfffe0000000200(slab)
      raw: 00fffe0000000200 ffffea0002546508 ffffea00024fa248 ffff8880aa000c40
      raw: 0000000000000000 ffff8880946c3000 0000000100000002 0000000000000000
      page dumped because: kasan: bad access detected
      
      Memory state around the buggy address:
       ffff8880946c3880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
       ffff8880946c3900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
      >ffff8880946c3980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
       ffff8880946c3a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
       ffff8880946c3a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
      ==================================================================
      
      Reported-by: syzbot+d3eccef36ddbd02713e9@syzkaller.appspotmail.com
      Fixes: 5ac0d622 ("rxrpc: Fix missing notification")
      Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0041cd5a
    • David S. Miller's avatar
      Merge tag 'ieee802154-for-davem-2020-06-19' of... · 7fcaf731
      David S. Miller authored
      Merge tag 'ieee802154-for-davem-2020-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan
      
      Stefan Schmidt says:
      
      ====================
      pull-request: ieee802154 for net 2020-06-19
      
      An update from ieee802154 for your *net* tree.
      
      Just two small maintenance fixes to update references to the new project
      homepage.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7fcaf731
    • Hangbin Liu's avatar
      tc-testing: update geneve options match in tunnel_key unit tests · 54eeea0d
      Hangbin Liu authored
      Since iproute2 commit f72c3ad00f3b ("tc: m_tunnel_key: add options
      support for vxlan"), the geneve opt output use key word "geneve_opts"
      instead of "geneve_opt". To make compatibility for both old and new
      iproute2, let's accept both "geneve_opt" and "geneve_opts".
      Suggested-by: default avatarDavide Caratti <dcaratti@redhat.com>
      Signed-off-by: default avatarHangbin Liu <liuhangbin@gmail.com>
      Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
      Tested-by: default avatarDavide Caratti <dcaratti@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      54eeea0d
    • Heiner Kallweit's avatar
      r8169: fix firmware not resetting tp->ocp_base · 89fbd26c
      Heiner Kallweit authored
      Typically the firmware takes care that tp->ocp_base is reset to its
      default value. That's not the case (at least) for RTL8117.
      As a result subsequent PHY access reads/writes the wrong page and
      the link is broken. Fix this be resetting tp->ocp_base explicitly.
      
      Fixes: 229c1e0d ("r8169: load firmware for RTL8168fp/RTL8117")
      Reported-by: default avatarAaron Ma <mapengyu@gmail.com>
      Tested-by: default avatarAaron Ma <mapengyu@gmail.com>
      Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      89fbd26c
    • Dany Madden's avatar
      ibmvnic: continue to init in CRQ reset returns H_CLOSED · 8b40eb73
      Dany Madden authored
      Continue the reset path when partner adapter is not ready or H_CLOSED is
      returned from reset crq. This patch allows the CRQ init to proceed to
      establish a valid CRQ for traffic to flow after reset.
      Signed-off-by: default avatarDany Madden <drt@linux.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8b40eb73
    • Shannon Nelson's avatar
      ionic: tame the watchdog timer on reconfig · b59eabd2
      Shannon Nelson authored
      Even with moving netif_tx_disable() to an earlier point when
      taking down the queues for a reconfiguration, we still end
      up with the occasional netdev watchdog Tx Timeout complaint.
      The old method of using netif_trans_update() works fine for
      queue 0, but has no effect on the remaining queues.  Using
      netif_device_detach() allows us to signal to the watchdog to
      ignore us for the moment.
      
      Fixes: beead698 ("ionic: Add the basic NDO callbacks for netdev support")
      Signed-off-by: default avatarShannon Nelson <snelson@pensando.io>
      Acked-by: default avatarJonathan Toppins <jtoppins@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b59eabd2
  3. 20 Jun, 2020 11 commits
    • Willem de Bruijn's avatar
      selftests/net: report etf errors correctly · ca882609
      Willem de Bruijn authored
      The ETF qdisc can queue skbs that it could not pace on the errqueue.
      
      Address a few issues in the selftest
      
      - recv buffer size was too small, and incorrectly calculated
      - compared errno to ee_code instead of ee_errno
      - missed invalid request error type
      
      v2:
        - fix a few checkpatch --strict indentation warnings
      
      Fixes: ea6a5476 ("selftests/net: make so_txtime more robust to timer variance")
      Signed-off-by: default avatarWillem de Bruijn <willemb@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ca882609
    • Thomas Falcon's avatar
      ibmveth: Fix max MTU limit · 5948378b
      Thomas Falcon authored
      The max MTU limit defined for ibmveth is not accounting for
      virtual ethernet buffer overhead, which is twenty-two additional
      bytes set aside for the ethernet header and eight additional bytes
      of an opaque handle reserved for use by the hypervisor. Update the
      max MTU to reflect this overhead.
      
      Fixes: d894be57 ("ethernet: use net core MTU range checking in more drivers")
      Fixes: 110447f8 ("ethernet: fix min/max MTU typos")
      Signed-off-by: default avatarThomas Falcon <tlfalcon@linux.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5948378b
    • David S. Miller's avatar
      Merge branch 'several-fixes-for-indirect-flow_blocks-offload' · 95dcd892
      David S. Miller authored
      wenxu says:
      
      ====================
      several fixes for indirect flow_blocks offload
      
      v2:
      patch2: store the cb_priv of representor to the flow_block_cb->indr.cb_priv
      in the driver. And make the correct check with the statments
      this->indr.cb_priv == cb_priv
      
      patch4: del the driver list only in the indriect cleanup callbacks
      
      v3:
      add the cover letter and changlogs.
      
      v4:
      collapsed 1/4, 2/4, 4/4 in v3 to one fix
      Add the prepare patch 1 and 2
      
      v5:
      patch1: place flow_indr_block_cb_alloc() right before
      flow_indr_dev_setup_offload() to avoid moving flow_block_indr_init()
      
      This series fixes commit 1fac52da ("net: flow_offload: consolidate
      indirect flow_block infrastructure") that revists the flow_block
      infrastructure.
      
      patch #1 #2: prepare for fix patch #3
      add and use flow_indr_block_cb_alloc/remove function
      
      patch #3: fix flow_indr_dev_unregister path
      If the representor is removed, then identify the indirect flow_blocks
      that need to be removed by the release callback and the port representor
      structure. To identify the port representor structure, a new
      indr.cb_priv field needs to be introduced. The flow_block also needs to
      be removed from the driver list from the cleanup path
      
      patch#4 fix block->nooffloaddevcnt warning dmesg log.
      When a indr device add in offload success. The block->nooffloaddevcnt
      should be 0. After the representor go away. When the dir device go away
      the flow_block UNBIND operation with -EOPNOTSUPP which lead the warning
      demesg log.
      The block->nooffloaddevcnt should always count for indr block.
      even the indr block offload successful. The representor maybe
      gone away and the ingress qdisc can work in software mode.
      ====================
      Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      95dcd892
    • wenxu's avatar
      net/sched: cls_api: fix nooffloaddevcnt warning dmesg log · 3c005110
      wenxu authored
      The block->nooffloaddevcnt should always count for indr block.
      even the indr block offload successful. The representor maybe
      gone away and the ingress qdisc can work in software mode.
      
      block->nooffloaddevcnt warning with following dmesg log:
      
      [  760.667058] #####################################################
      [  760.668186] ## TEST test-ecmp-add-vxlan-encap-disable-sriov.sh ##
      [  760.669179] #####################################################
      [  761.780655] :test: Fedora 30 (Thirty)
      [  761.783794] :test: Linux reg-r-vrt-018-180 5.7.0+
      [  761.822890] :test: NIC ens1f0 FW 16.26.6000 PCI 0000:81:00.0 DEVICE 0x1019 ConnectX-5 Ex
      [  761.860244] mlx5_core 0000:81:00.0 ens1f0: Link up
      [  761.880693] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f0: link becomes ready
      [  762.059732] mlx5_core 0000:81:00.1 ens1f1: Link up
      [  762.234341] :test: unbind vfs of ens1f0
      [  762.257825] :test: Change ens1f0 eswitch (0000:81:00.0) mode to switchdev
      [  762.291363] :test: unbind vfs of ens1f1
      [  762.306914] :test: Change ens1f1 eswitch (0000:81:00.1) mode to switchdev
      [  762.309237] mlx5_core 0000:81:00.1: E-Switch: Disable: mode(LEGACY), nvfs(2), active vports(3)
      [  763.282598] mlx5_core 0000:81:00.1: E-Switch: Supported tc offload range - chains: 4294967294, prios: 4294967295
      [  763.362825] mlx5_core 0000:81:00.1: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0)
      [  763.444465] mlx5_core 0000:81:00.1 ens1f1: renamed from eth0
      [  763.460088] mlx5_core 0000:81:00.1: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0)
      [  763.502586] mlx5_core 0000:81:00.1: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0)
      [  763.552429] ens1f1_0: renamed from eth0
      [  763.569569] mlx5_core 0000:81:00.1: E-Switch: Enable: mode(OFFLOADS), nvfs(2), active vports(3)
      [  763.629694] ens1f1_1: renamed from eth1
      [  764.631552] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f1_0: link becomes ready
      [  764.670841] :test: unbind vfs of ens1f0
      [  764.681966] :test: unbind vfs of ens1f1
      [  764.726762] mlx5_core 0000:81:00.0 ens1f0: Link up
      [  764.766511] mlx5_core 0000:81:00.1 ens1f1: Link up
      [  764.797325] :test: Add multipath vxlan encap rule and disable sriov
      [  764.798544] :test: config multipath route
      [  764.812732] mlx5_core 0000:81:00.0: lag map port 1:2 port 2:2
      [  764.874556] mlx5_core 0000:81:00.0: modify lag map port 1:1 port 2:2
      [  765.603681] :test: OK
      [  765.659048] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f1_1: link becomes ready
      [  765.675085] :test: verify rule in hw
      [  765.694237] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f0: link becomes ready
      [  765.711892] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f1: link becomes ready
      [  766.979230] :test: OK
      [  768.125419] :test: OK
      [  768.127519] :test: - disable sriov ens1f1
      [  768.131160] pci 0000:81:02.2: Removing from iommu group 75
      [  768.132646] pci 0000:81:02.3: Removing from iommu group 76
      [  769.179749] mlx5_core 0000:81:00.1: E-Switch: Disable: mode(OFFLOADS), nvfs(2), active vports(3)
      [  769.455627] mlx5_core 0000:81:00.0: modify lag map port 1:1 port 2:1
      [  769.703990] mlx5_core 0000:81:00.1: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0)
      [  769.988637] mlx5_core 0000:81:00.1 ens1f1: renamed from eth0
      [  769.990022] :test: - disable sriov ens1f0
      [  769.994922] pci 0000:81:00.2: Removing from iommu group 73
      [  769.997048] pci 0000:81:00.3: Removing from iommu group 74
      [  771.035813] mlx5_core 0000:81:00.0: E-Switch: Disable: mode(OFFLOADS), nvfs(2), active vports(3)
      [  771.339091] ------------[ cut here ]------------
      [  771.340812] WARNING: CPU: 6 PID: 3448 at net/sched/cls_api.c:749 tcf_block_offload_unbind.isra.0+0x5c/0x60
      [  771.341728] Modules linked in: act_mirred act_tunnel_key cls_flower dummy vxlan ip6_udp_tunnel udp_tunnel sch_ingress nfsv3 nfs_acl nfs lockd grace fscache tun bridge stp llc sunrpc rdma_ucm rdma_cm iw_cm ib_cm mlx5_ib ib_uverbs ib_core mlx5_core intel_rapl_msr intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp mlxfw act_ct nf_flow_table kvm_intel nf_nat kvm nf_conntrack irqbypass crct10dif_pclmul igb crc32_pclmul nf_defrag_ipv6 libcrc32c nf_defrag_ipv4 crc32c_intel ghash_clmulni_intel ptp ipmi_ssif intel_cstate pps_c
      ore ses intel_uncore mei_me iTCO_wdt joydev ipmi_si iTCO_vendor_support i2c_i801 enclosure mei ioatdma dca lpc_ich wmi ipmi_devintf pcspkr acpi_power_meter ipmi_msghandler acpi_pad ast i2c_algo_bit drm_vram_helper drm_kms_helper drm_ttm_helper ttm drm mpt3sas raid_class scsi_transport_sas
      [  771.347818] CPU: 6 PID: 3448 Comm: test-ecmp-add-v Not tainted 5.7.0+ #1146
      [  771.348727] Hardware name: Supermicro SYS-2028TP-DECR/X10DRT-P, BIOS 2.0b 03/30/2017
      [  771.349646] RIP: 0010:tcf_block_offload_unbind.isra.0+0x5c/0x60
      [  771.350553] Code: 4a fd ff ff 83 f8 a1 74 0e 5b 4c 89 e7 5d 41 5c 41 5d e9 07 93 89 ff 8b 83 a0 00 00 00 8d 50 ff 89 93 a0 00 00 00 85 c0 75 df <0f> 0b eb db 0f 1f 44 00 00 41 57 41 56 41 55 41 89 cd 41 54 49 89
      [  771.352420] RSP: 0018:ffffb33144cd3b00 EFLAGS: 00010246
      [  771.353353] RAX: 0000000000000000 RBX: ffff8b37cf4b2800 RCX: 0000000000000000
      [  771.354294] RDX: 00000000ffffffff RSI: ffff8b3b9aad0000 RDI: ffffffff8d5c6e20
      [  771.355245] RBP: ffff8b37eb546948 R08: ffffffffc0b7a348 R09: ffff8b3b9aad0000
      [  771.356189] R10: 0000000000000001 R11: ffff8b3ba7a0a1c0 R12: ffff8b37cf4b2850
      [  771.357123] R13: ffff8b3b9aad0000 R14: ffff8b37cf4b2820 R15: ffff8b37cf4b2820
      [  771.358039] FS:  00007f8a19b6e740(0000) GS:ffff8b3befa00000(0000) knlGS:0000000000000000
      [  771.358965] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  771.359885] CR2: 00007f3afb91c1a0 CR3: 000000045133c004 CR4: 00000000001606e0
      [  771.360825] Call Trace:
      [  771.361764]  __tcf_block_put+0x84/0x150
      [  771.362712]  ingress_destroy+0x1b/0x20 [sch_ingress]
      [  771.363658]  qdisc_destroy+0x3e/0xc0
      [  771.364594]  dev_shutdown+0x7a/0xa5
      [  771.365522]  rollback_registered_many+0x20d/0x530
      [  771.366458]  ? netdev_upper_dev_unlink+0x15d/0x1c0
      [  771.367387]  unregister_netdevice_many.part.0+0xf/0x70
      [  771.368310]  vxlan_netdevice_event+0xa4/0x110 [vxlan]
      [  771.369454]  notifier_call_chain+0x4c/0x70
      [  771.370579]  rollback_registered_many+0x2f5/0x530
      [  771.371719]  rollback_registered+0x56/0x90
      [  771.372843]  unregister_netdevice_queue+0x73/0xb0
      [  771.373982]  unregister_netdev+0x18/0x20
      [  771.375168]  mlx5e_vport_rep_unload+0x56/0xc0 [mlx5_core]
      [  771.376327]  esw_offloads_disable+0x81/0x90 [mlx5_core]
      [  771.377512]  mlx5_eswitch_disable_locked.cold+0xcb/0x1af [mlx5_core]
      [  771.378679]  mlx5_eswitch_disable+0x44/0x60 [mlx5_core]
      [  771.379822]  mlx5_device_disable_sriov+0xad/0xb0 [mlx5_core]
      [  771.380968]  mlx5_core_sriov_configure+0xc1/0xe0 [mlx5_core]
      [  771.382087]  sriov_numvfs_store+0xfc/0x130
      [  771.383195]  kernfs_fop_write+0xce/0x1b0
      [  771.384302]  vfs_write+0xb6/0x1a0
      [  771.385410]  ksys_write+0x5f/0xe0
      [  771.386500]  do_syscall_64+0x5b/0x1d0
      [  771.387569]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      Fixes: 0fdcf78d ("net: use flow_indr_dev_setup_offload()")
      Signed-off-by: default avatarwenxu <wenxu@ucloud.cn>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3c005110
    • wenxu's avatar
      net: flow_offload: fix flow_indr_dev_unregister path · a1db2178
      wenxu authored
      If the representor is removed, then identify the indirect flow_blocks
      that need to be removed by the release callback and the port representor
      structure. To identify the port representor structure, a new
      indr.cb_priv field needs to be introduced. The flow_block also needs to
      be removed from the driver list from the cleanup path.
      
      Fixes: 1fac52da ("net: flow_offload: consolidate indirect flow_block infrastructure")
      Signed-off-by: default avatarwenxu <wenxu@ucloud.cn>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a1db2178
    • wenxu's avatar
      flow_offload: use flow_indr_block_cb_alloc/remove function · 66f1939a
      wenxu authored
      Prepare fix the bug in the next patch. use flow_indr_block_cb_alloc/remove
      function and remove the __flow_block_indr_binding.
      Signed-off-by: default avatarwenxu <wenxu@ucloud.cn>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      66f1939a
    • wenxu's avatar
      flow_offload: add flow_indr_block_cb_alloc/remove function · 26f2eb27
      wenxu authored
      Add flow_indr_block_cb_alloc/remove function for next fix patch.
      Signed-off-by: default avatarwenxu <wenxu@ucloud.cn>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      26f2eb27
    • Sabrina Dubroca's avatar
      geneve: allow changing DF behavior after creation · 56c09de3
      Sabrina Dubroca authored
      Currently, trying to change the DF parameter of a geneve device does
      nothing:
      
          # ip -d link show geneve1
          14: geneve1: <snip>
              link/ether <snip>
              geneve id 1 remote 10.0.0.1 ttl auto df set dstport 6081 <snip>
          # ip link set geneve1 type geneve id 1 df unset
          # ip -d link show geneve1
          14: geneve1: <snip>
              link/ether <snip>
              geneve id 1 remote 10.0.0.1 ttl auto df set dstport 6081 <snip>
      
      We just need to update the value in geneve_changelink.
      
      Fixes: a025fb5f ("geneve: Allow configuration of DF behaviour")
      Signed-off-by: default avatarSabrina Dubroca <sd@queasysnail.net>
      Reviewed-by: default avatarStefano Brivio <sbrivio@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      56c09de3
    • Claudiu Manoil's avatar
      enetc: Fix HW_VLAN_CTAG_TX|RX toggling · 9deba33f
      Claudiu Manoil authored
      VLAN tag insertion/extraction offload is correctly
      activated at probe time but deactivation of this feature
      (i.e. via ethtool) is broken.  Toggling works only for
      Tx/Rx ring 0 of a PF, and is ignored for the other rings,
      including the VF rings.
      To fix this, the existing VLAN offload toggling code
      was extended to all the rings assigned to a netdevice,
      instead of the default ring 0 (likely a leftover from the
      early validation days of this feature).  And the code was
      moved to the common set_features() function to fix toggling
      for the VF driver too.
      
      Fixes: d4fd0404 ("enetc: Introduce basic PF and VF ENETC ethernet drivers")
      Signed-off-by: default avatarClaudiu Manoil <claudiu.manoil@nxp.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9deba33f
    • Claudiu Beznea's avatar
      net: macb: undo operations in case of failure · faa62087
      Claudiu Beznea authored
      Undo previously done operation in case macb_phylink_connect()
      fails. Since macb_reset_hw() is the 1st undo operation the
      napi_exit label was renamed to reset_hw.
      
      Fixes: 7897b071 ("net: macb: convert to phylink")
      Signed-off-by: default avatarClaudiu Beznea <claudiu.beznea@microchip.com>
      Acked-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      faa62087
    • David S. Miller's avatar
      Merge tag 'rxrpc-fixes-20200618' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs · 2996cbd5
      David S. Miller authored
      David Howells says:
      
      ====================
      rxrpc: Performance drop fix and other fixes
      
      Here are three fixes for rxrpc:
      
       (1) Fix a trace symbol mapping.  It doesn't seem to let you map to "".
      
       (2) Fix the handling of the remote receive window size when it increases
           beyond the size we can support for our transmit window.
      
       (3) Fix a performance drop caused by retransmitted packets being
           accidentally marked as already ACK'd.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2996cbd5
  4. 19 Jun, 2020 17 commits
    • David S. Miller's avatar
      Merge branch 'net-phy-MDIO-bus-scanning-fixes' · cc26c9f5
      David S. Miller authored
      Florian Fainelli says:
      
      ====================
      net: phy: MDIO bus scanning fixes
      
      This patch series fixes two problems with the current MDIO bus scanning
      logic which was identified while moving from 4.9 to 5.4 on devices that
      do rely on scanning the MDIO bus at runtime because they use pluggable
      cards.
      
      Changes in v2:
      
      - added comment explaining the special value of -ENODEV
      - added Andrew's Reviewed-by tag
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cc26c9f5
    • Florian Fainelli's avatar
      net: phy: Check harder for errors in get_phy_id() · b2ffc75e
      Florian Fainelli authored
      Commit 02a6efca ("net: phy: allow scanning busses with missing
      phys") added a special condition to return -ENODEV in case -ENODEV or
      -EIO was returned from the first read of the MII_PHYSID1 register.
      
      In case the MDIO bus data line pull-up is not strong enough, the MDIO
      bus controller will not flag this as a read error. This can happen when
      a pluggable daughter card is not connected and weak internal pull-ups
      are used (since that is the only option, otherwise the pins are
      floating).
      
      The second read of MII_PHYSID2 will be correctly flagged an error
      though, but now we will return -EIO which will be treated as a hard
      error, thus preventing MDIO bus scanning loops to continue succesfully.
      
      Apply the same logic to both register reads, thus allowing the scanning
      logic to proceed.
      
      Fixes: 02a6efca ("net: phy: allow scanning busses with missing phys")
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b2ffc75e
    • Florian Fainelli's avatar
      of: of_mdio: Correct loop scanning logic · 5a8d7f12
      Florian Fainelli authored
      Commit 209c65b6 ("drivers/of/of_mdio.c:fix of_mdiobus_register()")
      introduced a break of the loop on the premise that a successful
      registration should exit the loop. The premise is correct but not to
      code, because rc && rc != -ENODEV is just a special error condition,
      that means we would exit the loop even with rc == -ENODEV which is
      absolutely not correct since this is the error code to indicate to the
      MDIO bus layer that scanning should continue.
      
      Fix this by explicitly checking for rc = 0 as the only valid condition
      to break out of the loop.
      
      Fixes: 209c65b6 ("drivers/of/of_mdio.c:fix of_mdiobus_register()")
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5a8d7f12
    • Flavio Suligoi's avatar
      net: ethernet: oki-semi: pch_gbe: fix spelling mistake · 6564cfef
      Flavio Suligoi authored
      Fix typo: "Triger" --> "Trigger"
      Signed-off-by: default avatarFlavio Suligoi <f.suligoi@asem.it>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6564cfef
    • Stefan Schmidt's avatar
      MAINTAINERS: update ieee802154 project website URL · e795a61a
      Stefan Schmidt authored
      Update URL to our new home.
      Signed-off-by: default avatarStefan Schmidt <stefan@datenfreihafen.org>
      e795a61a
    • Stefan Schmidt's avatar
      docs: net: ieee802154: change link to new project URL · e2c0b971
      Stefan Schmidt authored
      We finally came around to setup a new project website.
      Update the reference here.
      Signed-off-by: default avatarStefan Schmidt <stefan@datenfreihafen.org>
      e2c0b971
    • Flavio Suligoi's avatar
      net: ethernet: neterion: vxge: fix spelling mistake · 24f5aa53
      Flavio Suligoi authored
      Fix typo: "trigered" --> "triggered"
      Signed-off-by: default avatarFlavio Suligoi <f.suligoi@asem.it>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      24f5aa53
    • David S. Miller's avatar
      Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec · 0e5f9d50
      David S. Miller authored
      Steffen Klassert says:
      
      ====================
      pull request (net): ipsec 2020-06-19
      
      1) Fix double ESP trailer insertion in IPsec crypto offload if
         netif_xmit_frozen_or_stopped is true. From Huy Nguyen.
      
      2) Merge fixup for "remove output_finish indirection from
         xfrm_state_afinfo". From Stephen Rothwell.
      
      3) Select CRYPTO_SEQIV for ESP as this is needed for GCM and several
         other encryption algorithms. Also modernize the crypto algorithm
         selections for ESP and AH, remove those that are maked as "MUST NOT"
         and add those that are marked as "MUST" be implemented in RFC 8221.
         From Eric Biggers.
      
      Please note the merge conflict between commit:
      
      a7f7f624 ("treewide: replace '---help---' in Kconfig files with 'help'")
      
      from Linus' tree and commits:
      
      7d4e3919 ("esp, ah: consolidate the crypto algorithm selections")
      be013698 ("esp, ah: modernize the crypto algorithm selections")
      
      from the ipsec tree.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0e5f9d50
    • David S. Miller's avatar
      Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue · 7b075ad9
      David S. Miller authored
      Jeff Kirsher says:
      
      ====================
      Intel Wired LAN Driver Updates 2020-06-18
      
      This series contains fixes to ixgbe, i40e and ice driver.
      
      Ciara fixes up the ixgbe, i40e and ice drivers to protect access when
      allocating and freeing the rings.  In addition, made use of READ_ONCE
      when reading the rings prior to accessing the statistics pointer.
      
      Björn fixes a crash where the receive descriptor ring allocation was
      moved to a different function, which broke the ethtool set_ringparam()
      hook.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7b075ad9
    • Björn Töpel's avatar
      i40e: fix crash when Rx descriptor count is changed · 3995ecba
      Björn Töpel authored
      When the AF_XDP buffer allocator was introduced, the Rx SW ring
      "rx_bi" allocation was moved from i40e_setup_rx_descriptors()
      function, and was instead done in the i40e_configure_rx_ring()
      function.
      
      This broke the ethtool set_ringparam() hook for changing the Rx
      descriptor count, which was relying on i40e_setup_rx_descriptors() to
      handle the allocation.
      
      Fix this by adding an explicit i40e_alloc_rx_bi() call to
      i40e_set_ringparam().
      
      Fixes: be1222b5 ("i40e: Separate kernel allocated rx_bi rings from AF_XDP rings")
      Signed-off-by: default avatarBjörn Töpel <bjorn.topel@intel.com>
      Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
      Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
      3995ecba
    • Ciara Loftus's avatar
      ice: protect ring accesses with WRITE_ONCE · b1d95cc2
      Ciara Loftus authored
      The READ_ONCE macro is used when reading rings prior to accessing the
      statistics pointer. The corresponding WRITE_ONCE usage when allocating and
      freeing the rings to ensure protected access was not in place. Introduce
      this.
      Signed-off-by: default avatarCiara Loftus <ciara.loftus@intel.com>
      Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
      Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
      b1d95cc2
    • Ciara Loftus's avatar
      i40e: protect ring accesses with READ- and WRITE_ONCE · d59e2679
      Ciara Loftus authored
      READ_ONCE should be used when reading rings prior to accessing the
      statistics pointer. Introduce this as well as the corresponding WRITE_ONCE
      usage when allocating and freeing the rings, to ensure protected access.
      Signed-off-by: default avatarCiara Loftus <ciara.loftus@intel.com>
      Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
      Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
      d59e2679
    • Ciara Loftus's avatar
      ixgbe: protect ring accesses with READ- and WRITE_ONCE · f140ad9f
      Ciara Loftus authored
      READ_ONCE should be used when reading rings prior to accessing the
      statistics pointer. Introduce this as well as the corresponding WRITE_ONCE
      usage when allocating and freeing the rings, to ensure protected access.
      Signed-off-by: default avatarCiara Loftus <ciara.loftus@intel.com>
      Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
      Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
      f140ad9f
    • Eric Dumazet's avatar
      net: increment xmit_recursion level in dev_direct_xmit() · 0ad6f6e7
      Eric Dumazet authored
      Back in commit f60e5990 ("ipv6: protect skb->sk accesses
      from recursive dereference inside the stack") Hannes added code
      so that IPv6 stack would not trust skb->sk for typical cases
      where packet goes through 'standard' xmit path (__dev_queue_xmit())
      
      Alas af_packet had a dev_direct_xmit() path that was not
      dealing yet with xmit_recursion level.
      
      Also change sk_mc_loop() to dump a stack once only.
      
      Without this patch, syzbot was able to trigger :
      
      [1]
      [  153.567378] WARNING: CPU: 7 PID: 11273 at net/core/sock.c:721 sk_mc_loop+0x51/0x70
      [  153.567378] Modules linked in: nfnetlink ip6table_raw ip6table_filter iptable_raw iptable_nat nf_nat nf_conntrack nf_defrag_ipv4 nf_defrag_ipv6 iptable_filter macsec macvtap tap macvlan 8021q hsr wireguard libblake2s blake2s_x86_64 libblake2s_generic udp_tunnel ip6_udp_tunnel libchacha20poly1305 poly1305_x86_64 chacha_x86_64 libchacha curve25519_x86_64 libcurve25519_generic netdevsim batman_adv dummy team bridge stp llc w1_therm wire i2c_mux_pca954x i2c_mux cdc_acm ehci_pci ehci_hcd mlx4_en mlx4_ib ib_uverbs ib_core mlx4_core
      [  153.567386] CPU: 7 PID: 11273 Comm: b159172088 Not tainted 5.8.0-smp-DEV #273
      [  153.567387] RIP: 0010:sk_mc_loop+0x51/0x70
      [  153.567388] Code: 66 83 f8 0a 75 24 0f b6 4f 12 b8 01 00 00 00 31 d2 d3 e0 a9 bf ef ff ff 74 07 48 8b 97 f0 02 00 00 0f b6 42 3a 83 e0 01 5d c3 <0f> 0b b8 01 00 00 00 5d c3 0f b6 87 18 03 00 00 5d c0 e8 04 83 e0
      [  153.567388] RSP: 0018:ffff95c69bb93990 EFLAGS: 00010212
      [  153.567388] RAX: 0000000000000011 RBX: ffff95c6e0ee3e00 RCX: 0000000000000007
      [  153.567389] RDX: ffff95c69ae50000 RSI: ffff95c6c30c3000 RDI: ffff95c6c30c3000
      [  153.567389] RBP: ffff95c69bb93990 R08: ffff95c69a77f000 R09: 0000000000000008
      [  153.567389] R10: 0000000000000040 R11: 00003e0e00026128 R12: ffff95c6c30c3000
      [  153.567390] R13: ffff95c6cc4fd500 R14: ffff95c6f84500c0 R15: ffff95c69aa13c00
      [  153.567390] FS:  00007fdc3a283700(0000) GS:ffff95c6ff9c0000(0000) knlGS:0000000000000000
      [  153.567390] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  153.567391] CR2: 00007ffee758e890 CR3: 0000001f9ba20003 CR4: 00000000001606e0
      [  153.567391] Call Trace:
      [  153.567391]  ip6_finish_output2+0x34e/0x550
      [  153.567391]  __ip6_finish_output+0xe7/0x110
      [  153.567391]  ip6_finish_output+0x2d/0xb0
      [  153.567392]  ip6_output+0x77/0x120
      [  153.567392]  ? __ip6_finish_output+0x110/0x110
      [  153.567392]  ip6_local_out+0x3d/0x50
      [  153.567392]  ipvlan_queue_xmit+0x56c/0x5e0
      [  153.567393]  ? ksize+0x19/0x30
      [  153.567393]  ipvlan_start_xmit+0x18/0x50
      [  153.567393]  dev_direct_xmit+0xf3/0x1c0
      [  153.567393]  packet_direct_xmit+0x69/0xa0
      [  153.567394]  packet_sendmsg+0xbf0/0x19b0
      [  153.567394]  ? plist_del+0x62/0xb0
      [  153.567394]  sock_sendmsg+0x65/0x70
      [  153.567394]  sock_write_iter+0x93/0xf0
      [  153.567394]  new_sync_write+0x18e/0x1a0
      [  153.567395]  __vfs_write+0x29/0x40
      [  153.567395]  vfs_write+0xb9/0x1b0
      [  153.567395]  ksys_write+0xb1/0xe0
      [  153.567395]  __x64_sys_write+0x1a/0x20
      [  153.567395]  do_syscall_64+0x43/0x70
      [  153.567396]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
      [  153.567396] RIP: 0033:0x453549
      [  153.567396] Code: Bad RIP value.
      [  153.567396] RSP: 002b:00007fdc3a282cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
      [  153.567397] RAX: ffffffffffffffda RBX: 00000000004d32d0 RCX: 0000000000453549
      [  153.567397] RDX: 0000000000000020 RSI: 0000000020000300 RDI: 0000000000000003
      [  153.567398] RBP: 00000000004d32d8 R08: 0000000000000000 R09: 0000000000000000
      [  153.567398] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004d32dc
      [  153.567398] R13: 00007ffee742260f R14: 00007fdc3a282dc0 R15: 00007fdc3a283700
      [  153.567399] ---[ end trace c1d5ae2b1059ec62 ]---
      
      f60e5990 ("ipv6: protect skb->sk accesses from recursive dereference inside the stack")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarsyzbot <syzkaller@googlegroups.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0ad6f6e7
    • Florian Fainelli's avatar
      net: dsa: bcm_sf2: Fix node reference count · 8dbe4c5d
      Florian Fainelli authored
      of_find_node_by_name() will do an of_node_put() on the "from" argument.
      With CONFIG_OF_DYNAMIC enabled which checks for device_node reference
      counts, we would be getting a warning like this:
      
      [    6.347230] refcount_t: increment on 0; use-after-free.
      [    6.352498] WARNING: CPU: 3 PID: 77 at lib/refcount.c:156
      refcount_inc_checked+0x38/0x44
      [    6.360601] Modules linked in:
      [    6.363661] CPU: 3 PID: 77 Comm: kworker/3:1 Tainted: G        W
      5.4.46-gb78b3e9956e6 #13
      [    6.372546] Hardware name: BCM97278SV (DT)
      [    6.376649] Workqueue: events deferred_probe_work_func
      [    6.381796] pstate: 60000005 (nZCv daif -PAN -UAO)
      [    6.386595] pc : refcount_inc_checked+0x38/0x44
      [    6.391133] lr : refcount_inc_checked+0x38/0x44
      ...
      [    6.478791] Call trace:
      [    6.481243]  refcount_inc_checked+0x38/0x44
      [    6.485433]  kobject_get+0x3c/0x4c
      [    6.488840]  of_node_get+0x24/0x34
      [    6.492247]  of_irq_find_parent+0x3c/0xe0
      [    6.496263]  of_irq_parse_one+0xe4/0x1d0
      [    6.500191]  irq_of_parse_and_map+0x44/0x84
      [    6.504381]  bcm_sf2_sw_probe+0x22c/0x844
      [    6.508397]  platform_drv_probe+0x58/0xa8
      [    6.512413]  really_probe+0x238/0x3fc
      [    6.516081]  driver_probe_device+0x11c/0x12c
      [    6.520358]  __device_attach_driver+0xa8/0x100
      [    6.524808]  bus_for_each_drv+0xb4/0xd0
      [    6.528650]  __device_attach+0xd0/0x164
      [    6.532493]  device_initial_probe+0x24/0x30
      [    6.536682]  bus_probe_device+0x38/0x98
      [    6.540524]  deferred_probe_work_func+0xa8/0xd4
      [    6.545061]  process_one_work+0x178/0x288
      [    6.549078]  process_scheduled_works+0x44/0x48
      [    6.553529]  worker_thread+0x218/0x270
      [    6.557285]  kthread+0xdc/0xe4
      [    6.560344]  ret_from_fork+0x10/0x18
      [    6.563925] ---[ end trace 68f65caf69bb152a ]---
      
      Fix this by adding a of_node_get() to increment the reference count
      prior to the call.
      
      Fixes: afa3b592 ("net: dsa: bcm_sf2: Ensure correct sub-node is parsed")
      Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8dbe4c5d
    • Alexander Lobakin's avatar
      net: ethtool: add missing NETIF_F_GSO_FRAGLIST feature string · eddbf5d0
      Alexander Lobakin authored
      Commit 3b335832 ("net: Add fraglist GRO/GSO feature flags") missed
      an entry for NETIF_F_GSO_FRAGLIST in netdev_features_strings array. As
      a result, fraglist GSO feature is not shown in 'ethtool -k' output and
      can't be toggled on/off.
      The fix is trivial.
      
      Fixes: 3b335832 ("net: Add fraglist GRO/GSO feature flags")
      Signed-off-by: default avatarAlexander Lobakin <alobakin@pm.me>
      Reviewed-by: default avatarMichal Kubecek <mkubecek@suse.cz>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      eddbf5d0
    • David Christensen's avatar
      tg3: driver sleeps indefinitely when EEH errors exceed eeh_max_freezes · 3a2656a2
      David Christensen authored
      The driver function tg3_io_error_detected() calls napi_disable twice,
      without an intervening napi_enable, when the number of EEH errors exceeds
      eeh_max_freezes, resulting in an indefinite sleep while holding rtnl_lock.
      
      Add check for pcierr_recovery which skips code already executed for the
      "Frozen" state.
      Signed-off-by: default avatarDavid Christensen <drc@linux.vnet.ibm.com>
      Reviewed-by: default avatarMichael Chan <michael.chan@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3a2656a2