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  1. Nov 17, 2021
  2. Nov 16, 2021
    • David S. Miller's avatar
      Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue · 848e5d66
      David S. Miller authored
      
      
      Tony Nguyen says:
      
      ====================
      Intel Wired LAN Driver Updates 2021-11-15
      
      This series contains updates to iavf driver only.
      
      Mateusz adds a wait for reset completion when changing queue count which
      could otherwise cause issues with VF reset.
      
      Nick adds a null check for vf_res in iavf_fix_features(), corrects
      ordering of function calls to resolve dependency issues, and prevents
      possible freeing of a lock which isn't being held.
      
      Piotr fixes logic that did not allow setting all multicast mode without
      promiscuous mode.
      
      Jake prevents possible accidental freeing of filter structure.
      
      Mitch adds null checks for key and indir parameters in iavf_get_rxfh().
      
      Surabhi adds an additional check that would, previously, cause the driver
      to print a false error due to values obtained while the VF is in reset.
      
      Grzegorz prevents a queue request of 0 which would cause queue count to
      reset to default values.
      
      Akeem restores VLAN filters when bringing the interface back up.
      ====================
      
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      848e5d66
    • Cong Wang's avatar
      udp: Validate checksum in udp_read_sock() · 099f896f
      Cong Wang authored
      It turns out the skb's in sock receive queue could have bad checksums, as
      both ->poll() and ->recvmsg() validate checksums. We have to do the same
      for ->read_sock() path too before they are redirected in sockmap.
      
      Fixes: d7f57118
      
       ("udp: Implement ->read_sock() for sockmap")
      Reported-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Signed-off-by: default avatarCong Wang <cong.wang@bytedance.com>
      Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
      Link: https://lore.kernel.org/bpf/20211115044006.26068-1-xiyou.wangcong@gmail.com
      099f896f
    • Daniel Borkmann's avatar
      bpf: Fix toctou on read-only map's constant scalar tracking · 353050be
      Daniel Borkmann authored
      Commit a23740ec ("bpf: Track contents of read-only maps as scalars") is
      checking whether maps are read-only both from BPF program side and user space
      side, and then, given their content is constant, reading out their data via
      map->ops->map_direct_value_addr() which is then subsequently used as known
      scalar value for the register, that is, it is marked as __mark_reg_known()
      with the read value at verification time. Before a23740ec, the register
      content was marked as an unknown scalar so the verifier could not make any
      assumptions about the map content.
      
      The current implementation however is prone to a TOCTOU race, meaning, the
      value read as known scalar for the register is not guaranteed to be exactly
      the same at a later point when the program is executed, and as such, the
      prior made assumptions of the verifier with regards to the program will be
      invalid which can cause issues such as OOB access, etc.
      
      While the BPF_F_RDONLY_PROG map flag is always fixed and required to be
      specified at map creation time, the map->frozen property is initially set to
      false for the map given the map value needs to be populated, e.g. for global
      data sections. Once complete, the loader "freezes" the map from user space
      such that no subsequent updates/deletes are possible anymore. For the rest
      of the lifetime of the map, this freeze one-time trigger cannot be undone
      anymore after a successful BPF_MAP_FREEZE cmd return. Meaning, any new BPF_*
      cmd calls which would update/delete map entries will be rejected with -EPERM
      since map_get_sys_perms() removes the FMODE_CAN_WRITE permission. This also
      means that pending update/delete map entries must still complete before this
      guarantee is given. This corner case is not an issue for loaders since they
      create and prepare such program private map in successive steps.
      
      However, a malicious user is able to trigger this TOCTOU race in two different
      ways: i) via userfaultfd, and ii) via batched updates. For i) userfaultfd is
      used to expand the competition interval, so that map_update_elem() can modify
      the contents of the map after map_freeze() and bpf_prog_load() were executed.
      This works, because userfaultfd halts the parallel thread which triggered a
      map_update_elem() at the time where we copy key/value from the user buffer and
      this already passed the FMODE_CAN_WRITE capability test given at that time the
      map was not "frozen". Then, the main thread performs the map_freeze() and
      bpf_prog_load(), and once that had completed successfully, the other thread
      is woken up to complete the pending map_update_elem() which then changes the
      map content. For ii) the idea of the batched update is similar, meaning, when
      there are a large number of updates to be processed, it can increase the
      competition interval between the two. It is therefore possible in practice to
      modify the contents of the map after executing map_freeze() and bpf_prog_load().
      
      One way to fix both i) and ii) at the same time is to expand the use of the
      map's map->writecnt. The latter was introduced in fc970227 ("bpf: Add mmap()
      support for BPF_MAP_TYPE_ARRAY") and further refined in 1f6cb19b ("bpf:
      Prevent re-mmap()'ing BPF map as writable for initially r/o mapping") with
      the rationale to make a writable mmap()'ing of a map mutually exclusive with
      read-only freezing. The counter indicates writable mmap() mappings and then
      prevents/fails the freeze operation. Its semantics can be expanded beyond
      just mmap() by generally indicating ongoing write phases. This would essentially
      span any parallel regular and batched flavor of update/delete operation and
      then also have map_freeze() fail with -EBUSY. For the check_mem_access() in
      the verifier we expand upon the bpf_map_is_rdonly() check ensuring that all
      last pending writes have completed via bpf_map_write_active() test. Once the
      map->frozen is set and bpf_map_write_active() indicates a map->writecnt of 0
      only then we are really guaranteed to use the map's data as known constants.
      For map->frozen being set and pending writes in process of still being completed
      we fall back to marking that register as unknown scalar so we don't end up
      making assumptions about it. With this, both TOCTOU reproducers from i) and
      ii) are fixed.
      
      Note that the map->writecnt has been converted into a atomic64 in the fix in
      order to avoid a double freeze_mutex mutex_{un,}lock() pair when updating
      map->writecnt in the various map update/delete BPF_* cmd flavors. Spanning
      the freeze_mutex over entire map update/delete operations in syscall side
      would not be possible due to then causing everything to be serialized.
      Similarly, something like synchronize_rcu() after setting map->frozen to wait
      for update/deletes to complete is not possible either since it would also
      have to span the user copy which can sleep. On the libbpf side, this won't
      break d66562fb ("libbpf: Add BPF object skeleton support") as the
      anonymous mmap()-ed "map initialization image" is remapped as a BPF map-backed
      mmap()-ed memory where for .rodata it's non-writable.
      
      Fixes: a23740ec
      
       ("bpf: Track contents of read-only maps as scalars")
      Reported-by: default avatar <w1tcher.bupt@gmail.com>
      Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
      Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      353050be
    • Alexander Lobakin's avatar
      samples/bpf: Fix build error due to -isystem removal · 6060a6cb
      Alexander Lobakin authored
      Since recent Kbuild updates we no longer include files from compiler
      directories. However, samples/bpf/hbm_kern.h hasn't been tuned for
      this (LLVM 13):
      
        CLANG-bpf  samples/bpf/hbm_out_kern.o
      In file included from samples/bpf/hbm_out_kern.c:55:
      samples/bpf/hbm_kern.h:12:10: fatal error: 'stddef.h' file not found
               ^~~~~~~~~~
      1 error generated.
        CLANG-bpf  samples/bpf/hbm_edt_kern.o
      In file included from samples/bpf/hbm_edt_kern.c:53:
      samples/bpf/hbm_kern.h:12:10: fatal error: 'stddef.h' file not found
               ^~~~~~~~~~
      1 error generated.
      
      It is enough to just drop both stdbool.h and stddef.h from includes
      to fix those.
      
      Fixes: 04e85bbf
      
       ("isystem: delete global -isystem compile option")
      Signed-off-by: default avatarAlexander Lobakin <alexandr.lobakin@intel.com>
      Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Reviewed-by: default avatarMichal Swiatkowski <michal.swiatkowski@linux.intel.com>
      Link: https://lore.kernel.org/bpf/20211115130741.3584-1-alexandr.lobakin@intel.com
      
      
      Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      6060a6cb
    • Alexei Starovoitov's avatar
      Merge branch 'Forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing progs' · 9e4dc892
      Alexei Starovoitov authored
      Dmitrii Banshchikov says:
      
      ====================
      
      Various locking issues are possible with bpf_ktime_get_coarse_ns() and
      bpf_timer_* set of helpers.
      
      syzbot found a locking issue with bpf_ktime_get_coarse_ns() helper executed in
      BPF_PROG_TYPE_PERF_EVENT prog type - [1]. The issue is possible because the
      helper uses non fast version of time accessor that isn't safe for any context.
      The helper was added because it provided performance benefits in comparison to
      bpf_ktime_get_ns() helper.
      
      A similar locking issue is possible with bpf_timer_* set of helpers when used
      in tracing progs.
      
      The solution is to restrict use of the helpers in tracing progs.
      
      In the [1] discussion it was stated that bpf_spin_lock related helpers shall
      also be excluded for tracing progs. The verifier has a compatibility check
      between a map and a program. If a tracing program tries to use a map which
      value has struct bpf_spin_lock the verifier fails that is why bpf_spin_lock is
      already restricted.
      
      Patch 1 restricts helpers
      Patch 2 adds tests
      
      v1 -> v2:
       * Limit the helpers via func proto getters instead of allowed callback
       * Add note about helpers' restrictions to linux/bpf.h
       * Add Fixes tag
       * Remove extra \0 from btf_str_sec
       * Beside asm tests add prog tests
       * Trim CC
      
      1. https://lore.kernel.org/all/00000000000013aebd05cff8e064@google.com/
      
      
      ====================
      
      Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      9e4dc892
    • Dmitrii Banshchikov's avatar
      selftests/bpf: Add tests for restricted helpers · e60e6962
      Dmitrii Banshchikov authored
      
      
      This patch adds tests that bpf_ktime_get_coarse_ns(), bpf_timer_* and
      bpf_spin_lock()/bpf_spin_unlock() helpers are forbidden in tracing progs
      as their use there may result in various locking issues.
      
      Signed-off-by: default avatarDmitrii Banshchikov <me@ubique.spb.ru>
      Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      Link: https://lore.kernel.org/bpf/20211113142227.566439-3-me@ubique.spb.ru
      e60e6962
    • Dmitrii Banshchikov's avatar
      bpf: Forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing progs · 5e0bc308
      Dmitrii Banshchikov authored
      Use of bpf_ktime_get_coarse_ns() and bpf_timer_* helpers in tracing
      progs may result in locking issues.
      
      bpf_ktime_get_coarse_ns() uses ktime_get_coarse_ns() time accessor that
      isn't safe for any context:
      ======================================================
      WARNING: possible circular locking dependency detected
      5.15.0-syzkaller #0 Not tainted
      ------------------------------------------------------
      syz-executor.4/14877 is trying to acquire lock:
      ffffffff8cb30008 (tk_core.seq.seqcount){----}-{0:0}, at: ktime_get_coarse_ts64+0x25/0x110 kernel/time/timekeeping.c:2255
      
      but task is already holding lock:
      ffffffff90dbf200 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_deactivate+0x61/0x400 lib/debugobjects.c:735
      
      which lock already depends on the new lock.
      
      the existing dependency chain (in reverse order) is:
      
      -> #1 (&obj_hash[i].lock){-.-.}-{2:2}:
             lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5625
             __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
             _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
             __debug_object_init+0xd9/0x1860 lib/debugobjects.c:569
             debug_hrtimer_init kernel/time/hrtimer.c:414 [inline]
             debug_init kernel/time/hrtimer.c:468 [inline]
             hrtimer_init+0x20/0x40 kernel/time/hrtimer.c:1592
             ntp_init_cmos_sync kernel/time/ntp.c:676 [inline]
             ntp_init+0xa1/0xad kernel/time/ntp.c:1095
             timekeeping_init+0x512/0x6bf kernel/time/timekeeping.c:1639
             start_kernel+0x267/0x56e init/main.c:1030
             secondary_startup_64_no_verify+0xb1/0xbb
      
      -> #0 (tk_core.seq.seqcount){----}-{0:0}:
             check_prev_add kernel/locking/lockdep.c:3051 [inline]
             check_prevs_add kernel/locking/lockdep.c:3174 [inline]
             validate_chain+0x1dfb/0x8240 kernel/locking/lockdep.c:3789
             __lock_acquire+0x1382/0x2b00 kernel/locking/lockdep.c:5015
             lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5625
             seqcount_lockdep_reader_access+0xfe/0x230 include/linux/seqlock.h:103
             ktime_get_coarse_ts64+0x25/0x110 kernel/time/timekeeping.c:2255
             ktime_get_coarse include/linux/timekeeping.h:120 [inline]
             ktime_get_coarse_ns include/linux/timekeeping.h:126 [inline]
             ____bpf_ktime_get_coarse_ns kernel/bpf/helpers.c:173 [inline]
             bpf_ktime_get_coarse_ns+0x7e/0x130 kernel/bpf/helpers.c:171
             bpf_prog_a99735ebafdda2f1+0x10/0xb50
             bpf_dispatcher_nop_func include/linux/bpf.h:721 [inline]
             __bpf_prog_run include/linux/filter.h:626 [inline]
             bpf_prog_run include/linux/filter.h:633 [inline]
             BPF_PROG_RUN_ARRAY include/linux/bpf.h:1294 [inline]
             trace_call_bpf+0x2cf/0x5d0 kernel/trace/bpf_trace.c:127
             perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9708
             perf_trace_lock+0x37c/0x440 include/trace/events/lock.h:39
             trace_lock_release+0x128/0x150 include/trace/events/lock.h:58
             lock_release+0x82/0x810 kernel/locking/lockdep.c:5636
             __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
             _raw_spin_unlock_irqrestore+0x75/0x130 kernel/locking/spinlock.c:194
             debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
             debug_deactivate kernel/time/hrtimer.c:481 [inline]
             __run_hrtimer kernel/time/hrtimer.c:1653 [inline]
             __hrtimer_run_queues+0x2f9/0xa60 kernel/time/hrtimer.c:1749
             hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
             local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
             __sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
             sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
             asm_sysvec_apic_timer_interrupt+0x12/0x20
             __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
             _raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
             try_to_wake_up+0x702/0xd20 kernel/sched/core.c:4118
             wake_up_process kernel/sched/core.c:4200 [inline]
             wake_up_q+0x9a/0xf0 kernel/sched/core.c:953
             futex_wake+0x50f/0x5b0 kernel/futex/waitwake.c:184
             do_futex+0x367/0x560 kernel/futex/syscalls.c:127
             __do_sys_futex kernel/futex/syscalls.c:199 [inline]
             __se_sys_futex+0x401/0x4b0 kernel/futex/syscalls.c:180
             do_syscall_x64 arch/x86/entry/common.c:50 [inline]
             do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
             entry_SYSCALL_64_after_hwframe+0x44/0xae
      
      There is a possible deadlock with bpf_timer_* set of helpers:
      hrtimer_start()
        lock_base();
        trace_hrtimer...()
          perf_event()
            bpf_run()
              bpf_timer_start()
                hrtimer_start()
                  lock_base()         <- DEADLOCK
      
      Forbid use of bpf_ktime_get_coarse_ns() and bpf_timer_* helpers in
      BPF_PROG_TYPE_KPROBE, BPF_PROG_TYPE_TRACEPOINT, BPF_PROG_TYPE_PERF_EVENT
      and BPF_PROG_TYPE_RAW_TRACEPOINT prog types.
      
      Fixes: d0551261 ("bpf: Add bpf_ktime_get_coarse_ns helper")
      Fixes: b00628b1
      
       ("bpf: Introduce bpf timers.")
      Reported-by: default avatar <syzbot+43fd005b5a1b4d10781e@syzkaller.appspotmail.com>
      Signed-off-by: default avatarDmitrii Banshchikov <me@ubique.spb.ru>
      Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      Link: https://lore.kernel.org/bpf/20211113142227.566439-2-me@ubique.spb.ru
      5e0bc308
    • Akeem G Abodunrin's avatar
      iavf: Restore VLAN filters after link down · 42930142
      Akeem G Abodunrin authored
      Restore VLAN filters after the link is brought down, and up - since all
      filters are deleted from HW during the netdev link down routine.
      
      Fixes: ed1f5b58
      
       ("i40evf: remove VLAN filters on close")
      Signed-off-by: default avatarAkeem G Abodunrin <akeem.g.abodunrin@intel.com>
      Tested-by: default avatarGeorge Kuruvinakunnel <george.kuruvinakunnel@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      42930142
    • Grzegorz Szczurek's avatar
      iavf: Fix for setting queues to 0 · 9a6e9e48
      Grzegorz Szczurek authored
      Now setting combine to 0 will be rejected with the
      appropriate error code.
      This has been implemented by adding a condition that checks
      the value of combine equal to zero.
      Without this patch, when the user requested it, no error was
      returned and combine was set to the default value for VF.
      
      Fixes: 5520deb1
      
       ("iavf: Enable support for up to 16 queues")
      Signed-off-by: default avatarGrzegorz Szczurek <grzegorzx.szczurek@intel.com>
      Tested-by: default avatarTony Brelinski <tony.brelinski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      9a6e9e48
    • Surabhi Boob's avatar
      iavf: Fix for the false positive ASQ/ARQ errors while issuing VF reset · 321421b5
      Surabhi Boob authored
      While issuing VF Reset from the guest OS, the VF driver prints
      logs about critical / Overflow error detection. This is not an
      actual error since the VF_MBX_ARQLEN register is set to all FF's
      for a short period of time and the VF would catch the bits set if
      it was reading the register during that spike of time.
      This patch introduces an additional check to ignore this condition
      since the VF is in reset.
      
      Fixes: 19b73d8e
      
       ("i40evf: Add additional check for reset")
      Signed-off-by: default avatarSurabhi Boob <surabhi.boob@intel.com>
      Tested-by: default avatarTony Brelinski <tony.brelinski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      321421b5
    • Mitch Williams's avatar
      iavf: validate pointers · 131b0edc
      Mitch Williams authored
      In some cases, the ethtool get_rxfh handler may be called with a null
      key or indir parameter. So check these pointers, or you will have a very
      bad day.
      
      Fixes: 43a3d9ba
      
       ("i40evf: Allow PF driver to configure RSS")
      Signed-off-by: default avatarMitch Williams <mitch.a.williams@intel.com>
      Tested-by: default avatarTony Brelinski <tony.brelinski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      131b0edc
    • Jacob Keller's avatar
      iavf: prevent accidental free of filter structure · 4f040080
      Jacob Keller authored
      In iavf_config_clsflower, the filter structure could be accidentally
      released at the end, if iavf_parse_cls_flower or iavf_handle_tclass ever
      return a non-zero but positive value.
      
      In this case, the function continues through to the end, and will call
      kfree() on the filter structure even though it has been added to the
      linked list.
      
      This can actually happen because iavf_parse_cls_flower will return
      a positive IAVF_ERR_CONFIG value instead of the traditional negative
      error codes.
      
      Fix this by ensuring that the kfree() check and error checks are
      similar. Use the more idiomatic "if (err)" to catch all non-zero error
      codes.
      
      Fixes: 0075fa0f
      
       ("i40evf: Add support to apply cloud filters")
      Signed-off-by: default avatarJacob Keller <jacob.e.keller@intel.com>
      Tested-by: default avatarTony Brelinski <tony.brelinski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      4f040080
    • Piotr Marczak's avatar
      iavf: Fix failure to exit out from last all-multicast mode · 8905072a
      Piotr Marczak authored
      The driver could only quit allmulti when allmulti and promisc modes are
      turn on at the same time. If promisc had been off there was no way to turn
      off allmulti mode.
      The patch corrects this behavior. Switching allmulti does not depends on
      promisc state mode anymore
      
      Fixes: f42a5c74
      
       ("i40e: Add allmulti support for the VF")
      Signed-off-by: default avatarPiotr Marczak <piotr.marczak@intel.com>
      Tested-by: default avatarTony Brelinski <tony.brelinski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      8905072a
    • Nicholas Nunley's avatar
      iavf: don't clear a lock we don't hold · 2135a8d5
      Nicholas Nunley authored
      In iavf_configure_clsflower() the function will bail out if it is unable
      to obtain the crit_section lock in a reasonable time. However, it will
      clear the lock when exiting, so fix this.
      
      Fixes: 640a8af5
      
       ("i40evf: Reorder configure_clsflower to avoid deadlock on error")
      Signed-off-by: default avatarNicholas Nunley <nicholas.d.nunley@intel.com>
      Tested-by: default avatarTony Brelinski <tony.brelinski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      2135a8d5
    • Nicholas Nunley's avatar
      iavf: free q_vectors before queues in iavf_disable_vf · 89f22f12
      Nicholas Nunley authored
      iavf_free_queues() clears adapter->num_active_queues, which
      iavf_free_q_vectors() relies on, so swap the order of these two function
      calls in iavf_disable_vf(). This resolves a panic encountered when the
      interface is disabled and then later brought up again after PF
      communication is restored.
      
      Fixes: 65c7006f
      
       ("i40evf: assign num_active_queues inside i40evf_alloc_queues")
      Signed-off-by: default avatarNicholas Nunley <nicholas.d.nunley@intel.com>
      Tested-by: default avatarTony Brelinski <tony.brelinski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      89f22f12
    • Nicholas Nunley's avatar
      iavf: check for null in iavf_fix_features · 8a4a126f
      Nicholas Nunley authored
      If the driver has lost contact with the PF then it enters a disabled state
      and frees adapter->vf_res. However, ndo_fix_features can still be called on
      the interface, so we need to check for this condition first. Since we have
      no information on the features at this time simply leave them unmodified
      and return.
      
      Fixes: c4445aed
      
       ("i40evf: Fix VLAN features")
      Signed-off-by: default avatarNicholas Nunley <nicholas.d.nunley@intel.com>
      Tested-by: default avatarTony Brelinski <tony.brelinski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      8a4a126f
    • Mateusz Palczewski's avatar
      iavf: Fix return of set the new channel count · 4e5e6b5d
      Mateusz Palczewski authored
      Fixed return correct code from set the new channel count.
      Implemented by check if reset is done in appropriate time.
      This solution give a extra time to pf for reset vf in case
      when user want set new channel count for all vfs.
      Without this patch it is possible to return misleading output
      code to user and vf reset not to be correctly performed by pf.
      
      Fixes: 5520deb1
      
       ("iavf: Enable support for up to 16 queues")
      Signed-off-by: default avatarGrzegorz Szczurek <grzegorzx.szczurek@intel.com>
      Signed-off-by: default avatarMateusz Palczewski <mateusz.palczewski@intel.com>
      Tested-by: default avatarKonrad Jankowski <konrad0.jankowski@intel.com>
      Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
      4e5e6b5d
  3. Nov 15, 2021