platform/kernel/linux-starfive.git
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Fri, 23 Mar 2018 15:24:57 +0000 (11:24 -0400)]
Merge git://git./linux/kernel/git/davem/net

Fun set of conflict resolutions here...

For the mac80211 stuff, these were fortunately just parallel
adds.  Trivially resolved.

In drivers/net/phy/phy.c we had a bug fix in 'net' that moved the
function phy_disable_interrupts() earlier in the file, whilst in
'net-next' the phy_error() call from this function was removed.

In net/ipv4/xfrm4_policy.c, David Ahern's changes to remove the
'rt_table_id' member of rtable collided with a bug fix in 'net' that
added a new struct member "rt_mtu_locked" which needs to be copied
over here.

The mlxsw driver conflict consisted of net-next separating
the span code and definitions into separate files, whilst
a 'net' bug fix made some changes to that moved code.

The mlx5 infiniband conflict resolution was quite non-trivial,
the RDMA tree's merge commit was used as a guide here, and
here are their notes:

====================

    Due to bug fixes found by the syzkaller bot and taken into the for-rc
    branch after development for the 4.17 merge window had already started
    being taken into the for-next branch, there were fairly non-trivial
    merge issues that would need to be resolved between the for-rc branch
    and the for-next branch.  This merge resolves those conflicts and
    provides a unified base upon which ongoing development for 4.17 can
    be based.

    Conflicts:
            drivers/infiniband/hw/mlx5/main.c - Commit 42cea83f9524
            (IB/mlx5: Fix cleanup order on unload) added to for-rc and
            commit b5ca15ad7e61 (IB/mlx5: Add proper representors support)
            add as part of the devel cycle both needed to modify the
            init/de-init functions used by mlx5.  To support the new
            representors, the new functions added by the cleanup patch
            needed to be made non-static, and the init/de-init list
            added by the representors patch needed to be modified to
            match the init/de-init list changes made by the cleanup
            patch.
    Updates:
            drivers/infiniband/hw/mlx5/mlx5_ib.h - Update function
            prototypes added by representors patch to reflect new function
            names as changed by cleanup patch
            drivers/infiniband/hw/mlx5/ib_rep.c - Update init/de-init
            stage list to match new order from cleanup patch
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 23 Mar 2018 01:48:43 +0000 (18:48 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "13 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm, thp: do not cause memcg oom for thp
  mm/vmscan: wake up flushers for legacy cgroups too
  Revert "mm: page_alloc: skip over regions of invalid pfns where possible"
  mm/shmem: do not wait for lock_page() in shmem_unused_huge_shrink()
  mm/thp: do not wait for lock_page() in deferred_split_scan()
  mm/khugepaged.c: convert VM_BUG_ON() to collapse fail
  x86/mm: implement free pmd/pte page interfaces
  mm/vmalloc: add interfaces to free unmapped page table
  h8300: remove extraneous __BIG_ENDIAN definition
  hugetlbfs: check for pgoff value overflow
  lockdep: fix fs_reclaim warning
  MAINTAINERS: update Mark Fasheh's e-mail
  mm/mempolicy.c: avoid use uninitialized preferred_node

6 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Fri, 23 Mar 2018 01:37:49 +0000 (18:37 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:
 "Two regression fixes, two bug fixes for older issues, two fixes for
  new functionality added this cycle that have userspace ABI concerns,
  and a small cleanup. These have appeared in a linux-next release and
  have a build success report from the 0day robot.

   * The 4.16 rework of altmap handling led to some configurations
     leaking page table allocations due to freeing from the altmap
     reservation rather than the page allocator.

     The impact without the fix is leaked memory and a WARN() message
     when tearing down libnvdimm namespaces. The rework also missed a
     place where error handling code needed to be removed that can lead
     to a crash if devm_memremap_pages() fails.

   * acpi_map_pxm_to_node() had a latent bug whereby it could
     misidentify the closest online node to a given proximity domain.

   * Block integrity handling was reworked several kernels back to allow
     calling add_disk() after setting up the integrity profile.

     The nd_btt and nd_blk drivers are just now catching up to fix
     automatic partition detection at driver load time.

   * The new peristence_domain attribute, a platform indicator of
     whether cpu caches are powerfail protected for example, is meant to
     be a single value enum and not a set of flags.

     This oversight was caught while reviewing new userspace code in
     libndctl to communicate the attribute.

     Fix this new enabling up so that we are not stuck with an unwanted
     userspace ABI"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm, nfit: fix persistence domain reporting
  libnvdimm, region: hide persistence_domain when unknown
  acpi, numa: fix pxm to online numa node associations
  x86, memremap: fix altmap accounting at free
  libnvdimm: remove redundant assignment to pointer 'dev'
  libnvdimm, {btt, blk}: do integrity setup before add_disk()
  kernel/memremap: Remove stale devres_free() call

6 years agoMerge tag 'drm-fixes-for-v4.16-rc7' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 23 Mar 2018 00:37:44 +0000 (17:37 -0700)]
Merge tag 'drm-fixes-for-v4.16-rc7' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "A bunch of fixes all over the place (core, i915, amdgpu, imx, sun4i,
  ast, tegra, vmwgfx), nothing too serious or worrying at this stage.

   - one uapi fix to stop multi-planar images with getfb

   - Sun4i error path and clock fixes

   - udl driver mmap offset fix

   - i915 DP MST and GPU reset fixes

   - vmwgfx mutex and black screen fixes

   - imx array underflow fix and vblank fix

   - amdgpu: display fixes

   - exynos devicetree fix

   - ast mode fix"

* tag 'drm-fixes-for-v4.16-rc7' of git://people.freedesktop.org/~airlied/linux: (29 commits)
  drm/ast: Fixed 1280x800 Display Issue
  drm: udl: Properly check framebuffer mmap offsets
  drm/i915: Specify which engines to reset following semaphore/event lockups
  drm/vmwgfx: Fix a destoy-while-held mutex problem.
  drm/vmwgfx: Fix black screen and device errors when running without fbdev
  drm: Reject getfb for multi-plane framebuffers
  drm/amd/display: Add one to EDID's audio channel count when passing to DC
  drm/amd/display: We shouldn't set format_default on plane as atomic driver
  drm/amd/display: Fix FMT truncation programming
  drm/amd/display: Allow truncation to 10 bits
  drm/sun4i: hdmi: Fix another error handling path in 'sun4i_hdmi_bind()'
  drm/sun4i: hdmi: Fix an error handling path in 'sun4i_hdmi_bind()'
  drm/i915/dp: Write to SET_POWER dpcd to enable MST hub.
  drm/amd/display: fix dereferencing possible ERR_PTR()
  drm/amd/display: Refine disable VGA
  drm/tegra: Shutdown on driver unbind
  drm/tegra: dsi: Don't disable regulator on ->exit()
  drm/tegra: dc: Detach IOMMU group from domain only once
  dt-bindings: exynos: Document #sound-dai-cells property of the HDMI node
  drm/imx: move arming of the vblank event to atomic_flush
  ...

6 years agomm, thp: do not cause memcg oom for thp
David Rientjes [Thu, 22 Mar 2018 23:17:45 +0000 (16:17 -0700)]
mm, thp: do not cause memcg oom for thp

Commit 2516035499b9 ("mm, thp: remove __GFP_NORETRY from khugepaged and
madvised allocations") changed the page allocator to no longer detect
thp allocations based on __GFP_NORETRY.

It did not, however, modify the mem cgroup try_charge() path to avoid
oom kill for either khugepaged collapsing or thp faulting.  It is never
expected to oom kill a process to allocate a hugepage for thp; reclaim
is governed by the thp defrag mode and MADV_HUGEPAGE, but allocations
(and charging) should fallback instead of oom killing processes.

Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1803191409420.124411@chino.kir.corp.google.com
Fixes: 2516035499b9 ("mm, thp: remove __GFP_NORETRY from khugepaged and madvised allocations")
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm/vmscan: wake up flushers for legacy cgroups too
Andrey Ryabinin [Thu, 22 Mar 2018 23:17:42 +0000 (16:17 -0700)]
mm/vmscan: wake up flushers for legacy cgroups too

Commit 726d061fbd36 ("mm: vmscan: kick flushers when we encounter dirty
pages on the LRU") added flusher invocation to shrink_inactive_list()
when many dirty pages on the LRU are encountered.

However, shrink_inactive_list() doesn't wake up flushers for legacy
cgroup reclaim, so the next commit bbef938429f5 ("mm: vmscan: remove old
flusher wakeup from direct reclaim path") removed the only source of
flusher's wake up in legacy mem cgroup reclaim path.

This leads to premature OOM if there is too many dirty pages in cgroup:
    # mkdir /sys/fs/cgroup/memory/test
    # echo $$ > /sys/fs/cgroup/memory/test/tasks
    # echo 50M > /sys/fs/cgroup/memory/test/memory.limit_in_bytes
    # dd if=/dev/zero of=tmp_file bs=1M count=100
    Killed

    dd invoked oom-killer: gfp_mask=0x14000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0

    Call Trace:
     dump_stack+0x46/0x65
     dump_header+0x6b/0x2ac
     oom_kill_process+0x21c/0x4a0
     out_of_memory+0x2a5/0x4b0
     mem_cgroup_out_of_memory+0x3b/0x60
     mem_cgroup_oom_synchronize+0x2ed/0x330
     pagefault_out_of_memory+0x24/0x54
     __do_page_fault+0x521/0x540
     page_fault+0x45/0x50

    Task in /test killed as a result of limit of /test
    memory: usage 51200kB, limit 51200kB, failcnt 73
    memory+swap: usage 51200kB, limit 9007199254740988kB, failcnt 0
    kmem: usage 296kB, limit 9007199254740988kB, failcnt 0
    Memory cgroup stats for /test: cache:49632KB rss:1056KB rss_huge:0KB shmem:0KB
            mapped_file:0KB dirty:49500KB writeback:0KB swap:0KB inactive_anon:0KB
    active_anon:1168KB inactive_file:24760KB active_file:24960KB unevictable:0KB
    Memory cgroup out of memory: Kill process 3861 (bash) score 88 or sacrifice child
    Killed process 3876 (dd) total-vm:8484kB, anon-rss:1052kB, file-rss:1720kB, shmem-rss:0kB
    oom_reaper: reaped process 3876 (dd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

Wake up flushers in legacy cgroup reclaim too.

Link: http://lkml.kernel.org/r/20180315164553.17856-1-aryabinin@virtuozzo.com
Fixes: bbef938429f5 ("mm: vmscan: remove old flusher wakeup from direct reclaim path")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Tested-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoRevert "mm: page_alloc: skip over regions of invalid pfns where possible"
Daniel Vacek [Thu, 22 Mar 2018 23:17:38 +0000 (16:17 -0700)]
Revert "mm: page_alloc: skip over regions of invalid pfns where possible"

This reverts commit b92df1de5d28 ("mm: page_alloc: skip over regions of
invalid pfns where possible").  The commit is meant to be a boot init
speed up skipping the loop in memmap_init_zone() for invalid pfns.

But given some specific memory mapping on x86_64 (or more generally
theoretically anywhere but on arm with CONFIG_HAVE_ARCH_PFN_VALID) the
implementation also skips valid pfns which is plain wrong and causes
'kernel BUG at mm/page_alloc.c:1389!'

  crash> log | grep -e BUG -e RIP -e Call.Trace -e move_freepages_block -e rmqueue -e freelist -A1
  kernel BUG at mm/page_alloc.c:1389!
  invalid opcode: 0000 [#1] SMP
  --
  RIP: 0010: move_freepages+0x15e/0x160
  --
  Call Trace:
    move_freepages_block+0x73/0x80
    __rmqueue+0x263/0x460
    get_page_from_freelist+0x7e1/0x9e0
    __alloc_pages_nodemask+0x176/0x420
  --

  crash> page_init_bug -v | grep RAM
  <struct resource 0xffff88067fffd2f8>          1000 -        9bfff       System RAM (620.00 KiB)
  <struct resource 0xffff88067fffd3a0>        100000 -     430bffff       System RAM (  1.05 GiB = 1071.75 MiB = 1097472.00 KiB)
  <struct resource 0xffff88067fffd410>      4b0c8000 -     4bf9cfff       System RAM ( 14.83 MiB = 15188.00 KiB)
  <struct resource 0xffff88067fffd480>      4bfac000 -     646b1fff       System RAM (391.02 MiB = 400408.00 KiB)
  <struct resource 0xffff88067fffd560>      7b788000 -     7b7fffff       System RAM (480.00 KiB)
  <struct resource 0xffff88067fffd640>     100000000 -    67fffffff       System RAM ( 22.00 GiB)

  crash> page_init_bug | head -6
  <struct resource 0xffff88067fffd560>      7b788000 -     7b7fffff       System RAM (480.00 KiB)
  <struct page 0xffffea0001ede200>   1fffff00000000  0 <struct pglist_data 0xffff88047ffd9000> 1 <struct zone 0xffff88047ffd9800> DMA32          4096    1048575
  <struct page 0xffffea0001ede200>       505736 505344 <struct page 0xffffea0001ed8000> 505855 <struct page 0xffffea0001edffc0>
  <struct page 0xffffea0001ed8000>                0  0 <struct pglist_data 0xffff88047ffd9000> 0 <struct zone 0xffff88047ffd9000> DMA               1       4095
  <struct page 0xffffea0001edffc0>   1fffff00000400  0 <struct pglist_data 0xffff88047ffd9000> 1 <struct zone 0xffff88047ffd9800> DMA32          4096    1048575
  BUG, zones differ!

  crash> kmem -p 77fff000 78000000 7b5ff000 7b600000 7b787000 7b788000
        PAGE        PHYSICAL      MAPPING       INDEX CNT FLAGS
  ffffea0001e00000  78000000                0        0  0 0
  ffffea0001ed7fc0  7b5ff000                0        0  0 0
  ffffea0001ed8000  7b600000                0        0  0 0       <<<<
  ffffea0001ede1c0  7b787000                0        0  0 0
  ffffea0001ede200  7b788000                0        0  1 1fffff00000000

Link: http://lkml.kernel.org/r/20180316143855.29838-1-neelx@redhat.com
Fixes: b92df1de5d28 ("mm: page_alloc: skip over regions of invalid pfns where possible")
Signed-off-by: Daniel Vacek <neelx@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm/shmem: do not wait for lock_page() in shmem_unused_huge_shrink()
Kirill A. Shutemov [Thu, 22 Mar 2018 23:17:35 +0000 (16:17 -0700)]
mm/shmem: do not wait for lock_page() in shmem_unused_huge_shrink()

shmem_unused_huge_shrink() gets called from reclaim path.  Waiting for
page lock may lead to deadlock there.

There was a bug report that may be attributed to this:

  http://lkml.kernel.org/r/alpine.LRH.2.11.1801242349220.30642@mail.ewheeler.net

Replace lock_page() with trylock_page() and skip the page if we failed
to lock it.  We will get to the page on the next scan.

We can test for the PageTransHuge() outside the page lock as we only
need protection against splitting the page under us.  Holding pin oni
the page is enough for this.

Link: http://lkml.kernel.org/r/20180316210830.43738-1-kirill.shutemov@linux.intel.com
Fixes: 779750d20b93 ("shmem: split huge pages beyond i_size under memory pressure")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Eric Wheeler <linux-mm@lists.ewheeler.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org> [4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm/thp: do not wait for lock_page() in deferred_split_scan()
Kirill A. Shutemov [Thu, 22 Mar 2018 23:17:31 +0000 (16:17 -0700)]
mm/thp: do not wait for lock_page() in deferred_split_scan()

deferred_split_scan() gets called from reclaim path.  Waiting for page
lock may lead to deadlock there.

Replace lock_page() with trylock_page() and skip the page if we failed
to lock it.  We will get to the page on the next scan.

Link: http://lkml.kernel.org/r/20180315150747.31945-1-kirill.shutemov@linux.intel.com
Fixes: 9a982250f773 ("thp: introduce deferred_split_huge_page()")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm/khugepaged.c: convert VM_BUG_ON() to collapse fail
Kirill A. Shutemov [Thu, 22 Mar 2018 23:17:28 +0000 (16:17 -0700)]
mm/khugepaged.c: convert VM_BUG_ON() to collapse fail

khugepaged is not yet able to convert PTE-mapped huge pages back to PMD
mapped.  We do not collapse such pages.  See check
khugepaged_scan_pmd().

But if between khugepaged_scan_pmd() and __collapse_huge_page_isolate()
somebody managed to instantiate THP in the range and then split the PMD
back to PTEs we would have a problem --
VM_BUG_ON_PAGE(PageCompound(page)) will get triggered.

It's possible since we drop mmap_sem during collapse to re-take for
write.

Replace the VM_BUG_ON() with graceful collapse fail.

Link: http://lkml.kernel.org/r/20180315152353.27989-1-kirill.shutemov@linux.intel.com
Fixes: b1caa957ae6d ("khugepaged: ignore pmd tables with THP mapped with ptes")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agox86/mm: implement free pmd/pte page interfaces
Toshi Kani [Thu, 22 Mar 2018 23:17:24 +0000 (16:17 -0700)]
x86/mm: implement free pmd/pte page interfaces

Implement pud_free_pmd_page() and pmd_free_pte_page() on x86, which
clear a given pud/pmd entry and free up lower level page table(s).

The address range associated with the pud/pmd entry must have been
purged by INVLPG.

Link: http://lkml.kernel.org/r/20180314180155.19492-3-toshi.kani@hpe.com
Fixes: e61ce6ade404e ("mm: change ioremap to set up huge I/O mappings")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Reported-by: Lei Li <lious.lilei@hisilicon.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm/vmalloc: add interfaces to free unmapped page table
Toshi Kani [Thu, 22 Mar 2018 23:17:20 +0000 (16:17 -0700)]
mm/vmalloc: add interfaces to free unmapped page table

On architectures with CONFIG_HAVE_ARCH_HUGE_VMAP set, ioremap() may
create pud/pmd mappings.  A kernel panic was observed on arm64 systems
with Cortex-A75 in the following steps as described by Hanjun Guo.

 1. ioremap a 4K size, valid page table will build,
 2. iounmap it, pte0 will set to 0;
 3. ioremap the same address with 2M size, pgd/pmd is unchanged,
    then set the a new value for pmd;
 4. pte0 is leaked;
 5. CPU may meet exception because the old pmd is still in TLB,
    which will lead to kernel panic.

This panic is not reproducible on x86.  INVLPG, called from iounmap,
purges all levels of entries associated with purged address on x86.  x86
still has memory leak.

The patch changes the ioremap path to free unmapped page table(s) since
doing so in the unmap path has the following issues:

 - The iounmap() path is shared with vunmap(). Since vmap() only
   supports pte mappings, making vunmap() to free a pte page is an
   overhead for regular vmap users as they do not need a pte page freed
   up.

 - Checking if all entries in a pte page are cleared in the unmap path
   is racy, and serializing this check is expensive.

 - The unmap path calls free_vmap_area_noflush() to do lazy TLB purges.
   Clearing a pud/pmd entry before the lazy TLB purges needs extra TLB
   purge.

Add two interfaces, pud_free_pmd_page() and pmd_free_pte_page(), which
clear a given pud/pmd entry and free up a page for the lower level
entries.

This patch implements their stub functions on x86 and arm64, which work
as workaround.

[akpm@linux-foundation.org: fix typo in pmd_free_pte_page() stub]
Link: http://lkml.kernel.org/r/20180314180155.19492-2-toshi.kani@hpe.com
Fixes: e61ce6ade404e ("mm: change ioremap to set up huge I/O mappings")
Reported-by: Lei Li <lious.lilei@hisilicon.com>
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Wang Xuefeng <wxf.wang@hisilicon.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Chintan Pandya <cpandya@codeaurora.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoh8300: remove extraneous __BIG_ENDIAN definition
Arnd Bergmann [Thu, 22 Mar 2018 23:17:17 +0000 (16:17 -0700)]
h8300: remove extraneous __BIG_ENDIAN definition

A bugfix I did earlier caused a build regression on h8300, which defines
the __BIG_ENDIAN macro in a slightly different way than the generic
code:

  arch/h8300/include/asm/byteorder.h:5:0: warning: "__BIG_ENDIAN" redefined

We don't need to define it here, as the same macro is already provided
by the linux/byteorder/big_endian.h, and that version does not conflict.

While this is a v4.16 regression, my earlier patch also got backported
to the 4.14 and 4.15 stable kernels, so we need the fixup there as well.

Link: http://lkml.kernel.org/r/20180313120752.2645129-1-arnd@arndb.de
Fixes: 101110f6271c ("Kbuild: always define endianess in kconfig.h")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agohugetlbfs: check for pgoff value overflow
Mike Kravetz [Thu, 22 Mar 2018 23:17:13 +0000 (16:17 -0700)]
hugetlbfs: check for pgoff value overflow

A vma with vm_pgoff large enough to overflow a loff_t type when
converted to a byte offset can be passed via the remap_file_pages system
call.  The hugetlbfs mmap routine uses the byte offset to calculate
reservations and file size.

A sequence such as:

  mmap(0x20a00000, 0x600000, 0, 0x66033, -1, 0);
  remap_file_pages(0x20a00000, 0x600000, 0, 0x20000000000000, 0);

will result in the following when task exits/file closed,

  kernel BUG at mm/hugetlb.c:749!
  Call Trace:
    hugetlbfs_evict_inode+0x2f/0x40
    evict+0xcb/0x190
    __dentry_kill+0xcb/0x150
    __fput+0x164/0x1e0
    task_work_run+0x84/0xa0
    exit_to_usermode_loop+0x7d/0x80
    do_syscall_64+0x18b/0x190
    entry_SYSCALL_64_after_hwframe+0x3d/0xa2

The overflowed pgoff value causes hugetlbfs to try to set up a mapping
with a negative range (end < start) that leaves invalid state which
causes the BUG.

The previous overflow fix to this code was incomplete and did not take
the remap_file_pages system call into account.

[mike.kravetz@oracle.com: v3]
Link: http://lkml.kernel.org/r/20180309002726.7248-1-mike.kravetz@oracle.com
[akpm@linux-foundation.org: include mmdebug.h]
[akpm@linux-foundation.org: fix -ve left shift count on sh]
Link: http://lkml.kernel.org/r/20180308210502.15952-1-mike.kravetz@oracle.com
Fixes: 045c7a3f53d9 ("hugetlbfs: fix offset overflow in hugetlbfs mmap")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: Nic Losby <blurbdust@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agolockdep: fix fs_reclaim warning
Tetsuo Handa [Thu, 22 Mar 2018 23:17:10 +0000 (16:17 -0700)]
lockdep: fix fs_reclaim warning

Dave Jones reported fs_reclaim lockdep warnings.

  ============================================
  WARNING: possible recursive locking detected
  4.15.0-rc9-backup-debug+ #1 Not tainted
  --------------------------------------------
  sshd/24800 is trying to acquire lock:
   (fs_reclaim){+.+.}, at: [<0000000084f438c2>] fs_reclaim_acquire.part.102+0x5/0x30

  but task is already holding lock:
   (fs_reclaim){+.+.}, at: [<0000000084f438c2>] fs_reclaim_acquire.part.102+0x5/0x30

  other info that might help us debug this:
   Possible unsafe locking scenario:

         CPU0
         ----
    lock(fs_reclaim);
    lock(fs_reclaim);

   *** DEADLOCK ***

   May be due to missing lock nesting notation

  2 locks held by sshd/24800:
   #0:  (sk_lock-AF_INET6){+.+.}, at: [<000000001a069652>] tcp_sendmsg+0x19/0x40
   #1:  (fs_reclaim){+.+.}, at: [<0000000084f438c2>] fs_reclaim_acquire.part.102+0x5/0x30

  stack backtrace:
  CPU: 3 PID: 24800 Comm: sshd Not tainted 4.15.0-rc9-backup-debug+ #1
  Call Trace:
   dump_stack+0xbc/0x13f
   __lock_acquire+0xa09/0x2040
   lock_acquire+0x12e/0x350
   fs_reclaim_acquire.part.102+0x29/0x30
   kmem_cache_alloc+0x3d/0x2c0
   alloc_extent_state+0xa7/0x410
   __clear_extent_bit+0x3ea/0x570
   try_release_extent_mapping+0x21a/0x260
   __btrfs_releasepage+0xb0/0x1c0
   btrfs_releasepage+0x161/0x170
   try_to_release_page+0x162/0x1c0
   shrink_page_list+0x1d5a/0x2fb0
   shrink_inactive_list+0x451/0x940
   shrink_node_memcg.constprop.88+0x4c9/0x5e0
   shrink_node+0x12d/0x260
   try_to_free_pages+0x418/0xaf0
   __alloc_pages_slowpath+0x976/0x1790
   __alloc_pages_nodemask+0x52c/0x5c0
   new_slab+0x374/0x3f0
   ___slab_alloc.constprop.81+0x47e/0x5a0
   __slab_alloc.constprop.80+0x32/0x60
   __kmalloc_track_caller+0x267/0x310
   __kmalloc_reserve.isra.40+0x29/0x80
   __alloc_skb+0xee/0x390
   sk_stream_alloc_skb+0xb8/0x340
   tcp_sendmsg_locked+0x8e6/0x1d30
   tcp_sendmsg+0x27/0x40
   inet_sendmsg+0xd0/0x310
   sock_write_iter+0x17a/0x240
   __vfs_write+0x2ab/0x380
   vfs_write+0xfb/0x260
   SyS_write+0xb6/0x140
   do_syscall_64+0x1e5/0xc05
   entry_SYSCALL64_slow_path+0x25/0x25

This warning is caused by commit d92a8cfcb37e ("locking/lockdep:
Rework FS_RECLAIM annotation") which replaced the use of
lockdep_{set,clear}_current_reclaim_state() in __perform_reclaim()
and lockdep_trace_alloc() in slab_pre_alloc_hook() with
fs_reclaim_acquire()/ fs_reclaim_release().

Since __kmalloc_reserve() from __alloc_skb() adds __GFP_NOMEMALLOC |
__GFP_NOWARN to gfp_mask, and all reclaim path simply propagates
__GFP_NOMEMALLOC, fs_reclaim_acquire() in slab_pre_alloc_hook() is
trying to grab the 'fake' lock again when __perform_reclaim() already
grabbed the 'fake' lock.

The

  /* this guy won't enter reclaim */
  if ((current->flags & PF_MEMALLOC) && !(gfp_mask & __GFP_NOMEMALLOC))
          return false;

test which causes slab_pre_alloc_hook() to try to grab the 'fake' lock
was added by commit cf40bd16fdad ("lockdep: annotate reclaim context
(__GFP_NOFS)").  But that test is outdated because PF_MEMALLOC thread
won't enter reclaim regardless of __GFP_NOMEMALLOC after commit
341ce06f69ab ("page allocator: calculate the alloc_flags for allocation
only once") added the PF_MEMALLOC safeguard (

  /* Avoid recursion of direct reclaim */
  if (p->flags & PF_MEMALLOC)
          goto nopage;

in __alloc_pages_slowpath()).

Thus, let's fix outdated test by removing __GFP_NOMEMALLOC test and
allow __need_fs_reclaim() to return false.

Link: http://lkml.kernel.org/r/201802280650.FJC73911.FOSOMLJVFFQtHO@I-love.SAKURA.ne.jp
Fixes: d92a8cfcb37ecd13 ("locking/lockdep: Rework FS_RECLAIM annotation")
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Tested-by: Dave Jones <davej@codemonkey.org.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Nick Piggin <npiggin@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nikolay Borisov <nborisov@suse.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: <stable@vger.kernel.org> [4.14+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMAINTAINERS: update Mark Fasheh's e-mail
Mark Fasheh [Thu, 22 Mar 2018 23:17:05 +0000 (16:17 -0700)]
MAINTAINERS: update Mark Fasheh's e-mail

I'd like to use my personal e-mail for Ocfs2 requests and review.

Link: http://lkml.kernel.org/r/20180311231356.9385-1-mfasheh@versity.com
Signed-off-by: Mark Fasheh <mark@fasheh.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm/mempolicy.c: avoid use uninitialized preferred_node
Yisheng Xie [Thu, 22 Mar 2018 23:17:02 +0000 (16:17 -0700)]
mm/mempolicy.c: avoid use uninitialized preferred_node

Alexander reported a use of uninitialized memory in __mpol_equal(),
which is caused by incorrect use of preferred_node.

When mempolicy in mode MPOL_PREFERRED with flags MPOL_F_LOCAL, it uses
numa_node_id() instead of preferred_node, however, __mpol_equal() uses
preferred_node without checking whether it is MPOL_F_LOCAL or not.

[akpm@linux-foundation.org: slight comment tweak]
Link: http://lkml.kernel.org/r/4ebee1c2-57f6-bcb8-0e2d-1833d1ee0bb7@huawei.com
Fixes: fc36b8d3d819 ("mempolicy: use MPOL_F_LOCAL to Indicate Preferred Local Policy")
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Reported-by: Alexander Potapenko <glider@google.com>
Tested-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agodrm/ast: Fixed 1280x800 Display Issue
Y.C. Chen [Mon, 12 Mar 2018 03:40:23 +0000 (11:40 +0800)]
drm/ast: Fixed 1280x800 Display Issue

The original ast driver cannot display properly if the resolution is 1280x800 and the pixel clock is 83.5MHz.
Here is the update to fix it.

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
6 years agoMerge tag 'acpi-4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Thu, 22 Mar 2018 23:20:25 +0000 (16:20 -0700)]
Merge tag 'acpi-4.16-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These revert one recent commit that added incorrect battery quirks for
  some Asus systems and fix an off-by-one error in the watchdog driver
  based on the ACPI WDAT table.

  Specifics:

   - Revert the recent change adding battery quirks for Asus GL502VSK
     and UX305LA as these quirks turn out to be inadequate and possibly
     premature (Daniel Drake).

   - Fix an off-by-one error in the resource allocation part of the
     watchdog driver based on the ACPI WDAT table (Takashi Iwai)"

* tag 'acpi-4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / watchdog: Fix off-by-one error at resource assignment
  Revert "ACPI / battery: Add quirk for Asus GL502VSK and UX305LA"

6 years agoMerge tag 'modules-for-v4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 22 Mar 2018 23:13:49 +0000 (16:13 -0700)]
Merge tag 'modules-for-v4.16-rc7' of git://git./linux/kernel/git/jeyu/linux

Pull modules fix from Jessica Yu:
 "Propagate error in modules_open() to avoid possible later NULL
  dereference if seq_open() had failed"

* tag 'modules-for-v4.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: propagate error in modules_open()

6 years agoMerge branch 'acpi-wdat'
Rafael J. Wysocki [Thu, 22 Mar 2018 22:42:08 +0000 (23:42 +0100)]
Merge branch 'acpi-wdat'

* acpi-wdat:
  ACPI / watchdog: Fix off-by-one error at resource assignment

6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Thu, 22 Mar 2018 21:10:29 +0000 (14:10 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Always validate XFRM esn replay attribute, from Florian Westphal.

 2) Fix RCU read lock imbalance in xfrm_get_tos(), from Xin Long.

 3) Don't try to get firmware dump if not loaded in iwlwifi, from Shaul
    Triebitz.

 4) Fix BPF helpers to deal with SCTP GSO SKBs properly, from Daniel
    Axtens.

 5) Fix some interrupt handling issues in e1000e driver, from Benjamin
    Poitier.

 6) Use strlcpy() in several ethtool get_strings methods, from Florian
    Fainelli.

 7) Fix rhlist dup insertion, from Paul Blakey.

 8) Fix SKB leak in netem packet scheduler, from Alexey Kodanev.

 9) Fix driver unload crash when link is up in smsc911x, from Jeremy
    Linton.

10) Purge out invalid socket types in l2tp_tunnel_create(), from Eric
    Dumazet.

11) Need to purge the write queue when TCP connections are aborted,
    otherwise userspace using MSG_ZEROCOPY can't close the fd. From
    Soheil Hassas Yeganeh.

12) Fix double free in error path of team driver, from Arkadi
    Sharshevsky.

13) Filter fixes for hv_netvsc driver, from Stephen Hemminger.

14) Fix non-linear packet access in ipv6 ndisc code, from Lorenzo
    Bianconi.

15) Properly filter out unsupported feature flags in macvlan driver,
    from Shannon Nelson.

16) Don't request loading the diag module for a protocol if the protocol
    itself is not even registered. From Xin Long.

17) If datagram connect fails in ipv6, make sure the socket state is
    consistent afterwards. From Paolo Abeni.

18) Use after free in qed driver, from Dan Carpenter.

19) If received ipv4 PMTU is less than the min pmtu, lock the mtu in the
    entry. From Sabrina Dubroca.

20) Fix sleep in atomic in tg3 driver, from Jonathan Toppins.

21) Fix vlan in vlan untagging in some situations, from Toshiaki Makita.

22) Fix double SKB free in genlmsg_mcast(). From Nicolas Dichtel.

23) Fix NULL derefs in error paths of tcf_*_init(), from Davide Caratti.

24) Unbalanced PM runtime calls in FEC driver, from Florian Fainelli.

25) Memory leak in gemini driver, from Igor Pylypiv.

26) IDR leaks in error paths of tcf_*_init() functions, from Davide
    Caratti.

27) Need to use GFP_ATOMIC in seg6_build_state(), from David Lebrun.

28) Missing dev_put() in error path of macsec_newlink(), from Dan
    Carpenter.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (201 commits)
  macsec: missing dev_put() on error in macsec_newlink()
  net: dsa: Fix functional dsa-loop dependency on FIXED_PHY
  hv_netvsc: common detach logic
  hv_netvsc: change GPAD teardown order on older versions
  hv_netvsc: use RCU to fix concurrent rx and queue changes
  hv_netvsc: disable NAPI before channel close
  net/ipv6: Handle onlink flag with multipath routes
  ppp: avoid loop in xmit recursion detection code
  ipv6: sr: fix NULL pointer dereference when setting encap source address
  ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
  net: aquantia: driver version bump
  net: aquantia: Implement pci shutdown callback
  net: aquantia: Allow live mac address changes
  net: aquantia: Add tx clean budget and valid budget handling logic
  net: aquantia: Change inefficient wait loop on fw data reads
  net: aquantia: Fix a regression with reset on old firmware
  net: aquantia: Fix hardware reset when SPI may rarely hangup
  s390/qeth: on channel error, reject further cmd requests
  s390/qeth: lock read device while queueing next buffer
  s390/qeth: when thread completes, wake up all waiters
  ...

6 years agoMerge tag 'mmc-v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Thu, 22 Mar 2018 20:29:55 +0000 (13:29 -0700)]
Merge tag 'mmc-v4.16-rc4' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "A couple of MMC fixes intended for v4.16-rc7:

  MMC host:

   - dw_mmc: Fix the suspend/resume issue for Exynos5433

   - dw_mmc: Fix the DTO/CTO timeout overflow calculation for 32-bit
     systems

   - dw_mmc: Make PIO mode work when failing with idmac when
     dw_mci_reset occurs

   - sdhci-acpi: Re-allow IRQ 0 to fix broken probe

  MMC core:

   - Update EXT_CSD caches to correctly switch partition for ioctl calls

   - Fix tracepoint print of blk_addr and blksz

   - Disable HPI on broken Micron (Numonyx) eMMC cards"

* tag 'mmc-v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-acpi: Fix IRQ 0
  mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs
  mmc: core: Fix tracepoint print of blk_addr and blksz
  mmc: core: Disable HPI for certain Micron (Numonyx) eMMC cards
  mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433
  mmc: block: fix updating ext_csd caches on ioctl call
  mmc: dw_mmc: Fix the DTO/CTO timeout overflow calculation for 32-bit systems

6 years agoMerge tag 'drm-misc-fixes-2018-03-22' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Thu, 22 Mar 2018 20:19:56 +0000 (06:19 +1000)]
Merge tag 'drm-misc-fixes-2018-03-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Main change is a patch to reject getfb call for multiplanar framebuffers,
then we have a couple of error path fixes on the sun4i driver. Still on that
driver there is a clk fix and finally a mmap offset fix on the udl driver.

* tag 'drm-misc-fixes-2018-03-22' of git://anongit.freedesktop.org/drm/drm-misc:
  drm: udl: Properly check framebuffer mmap offsets
  drm: Reject getfb for multi-plane framebuffers
  drm/sun4i: hdmi: Fix another error handling path in 'sun4i_hdmi_bind()'
  drm/sun4i: hdmi: Fix an error handling path in 'sun4i_hdmi_bind()'
  drm/sun4i: Fix an error handling path in 'sun4i_drv_bind()'
  drm/sun4i: Fix exclusivity of the TCON clocks

6 years agoMerge tag 'drm-intel-fixes-2018-03-21' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Thu, 22 Mar 2018 20:15:44 +0000 (06:15 +1000)]
Merge tag 'drm-intel-fixes-2018-03-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

One fix for DP MST and one fix for GPU reset on hang check.

* tag 'drm-intel-fixes-2018-03-21' of git://anongit.freedesktop.org/drm/drm-intel:
  drm/i915: Specify which engines to reset following semaphore/event lockups
  drm/i915/dp: Write to SET_POWER dpcd to enable MST hub.

6 years agoMerge branch 'vmwgfx-fixes-4.16' of git://people.freedesktop.org/~thomash/linux into...
Dave Airlie [Thu, 22 Mar 2018 20:15:08 +0000 (06:15 +1000)]
Merge branch 'vmwgfx-fixes-4.16' of git://people.freedesktop.org/~thomash/linux into drm-fixes

Two vmwgfx fixes for 4.16. Both cc'd stable.

* 'vmwgfx-fixes-4.16' of git://people.freedesktop.org/~thomash/linux:
  drm/vmwgfx: Fix a destoy-while-held mutex problem.
  drm/vmwgfx: Fix black screen and device errors when running without fbdev

6 years agoMerge tag 'imx-drm-fixes-2018-03-22' of git://git.pengutronix.de/git/pza/linux into...
Dave Airlie [Thu, 22 Mar 2018 20:14:15 +0000 (06:14 +1000)]
Merge tag 'imx-drm-fixes-2018-03-22' of git://git.pengutronix.de/git/pza/linux into drm-fixes

drm/imx: fixes for early vblank event issue, array underflow error

- fix an array underflow error by reordering the range check before the array
  subscript in ipu-prg.
- make some local functions static in ipuv3-plane.
- add a missng header for ipu_planes_assign_pre in ipuv3-plane.
- move arming of the vblank event from atomic_begin to atomic_flush, to avoid
  signalling atomic commit completion to userspace before plane atomic_update
  has finished, due to a race condition that is likely to be hit on i.MX6QP on
  PRE enabled channels.

* tag 'imx-drm-fixes-2018-03-22' of git://git.pengutronix.de/git/pza/linux:
  drm/imx: move arming of the vblank event to atomic_flush
  drm/imx: ipuv3-plane: Include "imx-drm.h" header file
  drm/imx: ipuv3-plane: Make functions static when possible
  gpu: ipu-v3: prg: avoid possible array underflow

6 years agoMerge branch 'hns3-VF-reset'
David S. Miller [Thu, 22 Mar 2018 19:29:05 +0000 (15:29 -0400)]
Merge branch 'hns3-VF-reset'

Salil Mehta says:

====================
Add support of VF Reset to HNS3 VF driver

This patch-set adds the support of VF reset to the existing VF driver.
VF Reset can be triggered due to TX watchdog firing  as a result of TX
data-path not working. VF reset could also be a result of some internal
configuration changes if that requires reset, or as a result of the
PF/Core/Global/IMP(Integrated Management Processor) reset happened in
the PF.

Summary of Patches:
* Watchdog timer trigger chnages are present in Patch 1.
* Reset Service Task and related Event handling is present in Patches {2,3}
* Changes to send reset request to PF, reset stack and re-initialization
  of the hclge device is present in Patches {4,5,6}
* Changes related to ARQ (Asynchronous Receive Queue) and its event handling
  are present in Patches {7,8}
* Changes required in PF to handle the VF Reset request and actually perform
  hardware VF reset is there in Patch 9.

NOTE: This patch depends upon "[PATCH net-next 00/11] fix some bugs for HNS3 driver"
Link: https://lkml.org/lkml/2018/3/21/72
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Changes required in PF mailbox to support VF reset
Salil Mehta [Thu, 22 Mar 2018 14:29:00 +0000 (14:29 +0000)]
net: hns3: Changes required in PF mailbox to support VF reset

PF needs to assert the VF reset when it receives the request to
reset from VF. After receiving request PF ackknowledges the
request by replying back MBX_ASSERTING_RESET message to VF.
VF then goes to pending state and wait for hardware to complete
the reset.

This patch contains code to handle the received VF message, inform
the VF of assertion and reset the VF using cmdq interface.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add *Asserting Reset* mailbox message & handling in VF
Salil Mehta [Thu, 22 Mar 2018 14:28:59 +0000 (14:28 +0000)]
net: hns3: Add *Asserting Reset* mailbox message & handling in VF

Reset Asserting message is forwarded by PF to inform VF about
the hardware reset which is about to happen. This might be due
to the earlier VF reset request received by the PF or because PF
for any reason decides to undergo reset. This message results in
VF to go in pending state in which it polls the hardware to
complete the reset and then further resets/tears its own stack.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Changes to support ARQ(Asynchronous Receive Queue)
Salil Mehta [Thu, 22 Mar 2018 14:28:58 +0000 (14:28 +0000)]
net: hns3: Changes to support ARQ(Asynchronous Receive Queue)

Current mailbox CRQ could consists of both synchronous and async
responses from the PF. Synchronous responses are time critical
and should be handed over to the waiting tasks/context as quickly
as possible otherwise timeout occurs.

Above problem gets accentuated if CRQ consists of even single
async message. Hence, it is important to have quick handling of
synchronous messages and maybe deferred handling of async messages
This patch introduces separate ARQ(async receive queues) for the
async messages. These messages are processed later with repsect
to mailbox task while synchronous messages still gets processed
in context to mailbox interrupt.

ARQ is important as VF reset introduces some new async messages
like MBX_ASSERTING_RESET which adds up to the presssure on the
responses for synchronousmessages and they timeout even more
quickly.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add support to re-initialize the hclge device
Salil Mehta [Thu, 22 Mar 2018 14:28:57 +0000 (14:28 +0000)]
net: hns3: Add support to re-initialize the hclge device

After the hardware reset we should re-fetch the configuration from
PF like queue info and tc info. This might have impact on allocations
made like that of TQPs. Hence, we should release all such allocations
and re-allocate fresh according to new fetched configuration after
reset.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add support to reset the enet/ring mgmt layer
Salil Mehta [Thu, 22 Mar 2018 14:28:56 +0000 (14:28 +0000)]
net: hns3: Add support to reset the enet/ring mgmt layer

After VF driver knows that hardware reset has been performed
successfully, it should proceed ahead and reset the enet layer.
This primarily consists of bringing down interface, clearing
TX/RX rings, disassociating vectors from ring etc.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add support to request VF Reset to PF
Salil Mehta [Thu, 22 Mar 2018 14:28:55 +0000 (14:28 +0000)]
net: hns3: Add support to request VF Reset to PF

VF driver depends upon PF to eventually reset the hardware. This
request is made using the mailbox command. This patch adds the
required function to acheive above.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add VF Reset device state and its handling
Salil Mehta [Thu, 22 Mar 2018 14:28:54 +0000 (14:28 +0000)]
net: hns3: Add VF Reset device state and its handling

This introduces the hclge device reset states of "requested" and
"pending" and also its handling in context to Reset Service Task.

Device gets into requested state because of any VF reset request
asserted from upper layers, for example due to watchdog timeout
expiration. Requested state would result in eventually forwarding
the VF reset request to PF which would actually reset the VF.

Device will get into pending state if:
1. VF receives the acknowledgement from PF for the VF reset
   request it originally sent to PF.
2. Reset Service Task detects that after asserting VF reset for
   certain times the data-path is not working and device then
   decides to assert full VF reset(this means also resetting the
   PCIe interface).
3. PF intimates the VF that it has undergone reset.
Pending state would result in VF to poll for hardware reset
completion status and then resetting the stack/enet layer, which
in turn means reinitializing the ring management/enet layer.

Note: we would be adding support of 3. later as a separate patch.
This decision should not affect VF reset as its event handling
is generic in nature.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add VF Reset Service Task to support event handling
Salil Mehta [Thu, 22 Mar 2018 14:28:53 +0000 (14:28 +0000)]
net: hns3: Add VF Reset Service Task to support event handling

VF reset would involve handling of different reset related events
from the stack, physical function, mailbox etc. Reset service task
would be used in servicing such reset event requests and later
handling the hardware completions waits and initiating the stack
resets.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Changes to make enet watchdog timeout func common for PF/VF
Salil Mehta [Thu, 22 Mar 2018 14:28:52 +0000 (14:28 +0000)]
net: hns3: Changes to make enet watchdog timeout func common for PF/VF

HNS3 drivers enet layer, used for the ring management and stack
interaction, is common to both VF and PF. PF already supports reset
functionality to handle the network stack watchdog timeout trigger
but the existing code is not generic enough to be used to support VF
reset as well.
This patch does following:
1. Makes the existing watchdog timeout handler in enet layer generic
   i.e. suitable for both VF and PF and
2. Introduces the new reset event handler for the VF code.
3. Changes existing reset event handler of PF code to initialize the
   reset level

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'Rework-ip_ra_chain-protection'
David S. Miller [Thu, 22 Mar 2018 19:12:57 +0000 (15:12 -0400)]
Merge branch 'Rework-ip_ra_chain-protection'

Kirill Tkhai says:

====================
Rework ip_ra_chain protection

Commit 1215e51edad1 "ipv4: fix a deadlock in ip_ra_control"
made rtnl_lock() be used in raw_close(). This function is called
on every RAW socket destruction, so that rtnl_mutex is taken
every time. This scales very sadly. I observe cleanup_net()
spending a lot of time in rtnl_lock() and raw_close() is one
of the biggest rtnl user (since we have percpu net->ipv4.icmp_sk).

This patchset reworks the locking: reverts the problem commit
and its descendant, and introduces rtnl-independent locking.
This may have a continuation, and someone may work on killing
rtnl_lock() in mrtsock_destruct() in the future.

v3: Change patches order: [2/5] and [3/5].
v2: Fix sparse warning [4/5], as reported by kbuild test robot.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Replace ip_ra_lock with per-net mutex
Kirill Tkhai [Thu, 22 Mar 2018 09:45:40 +0000 (12:45 +0300)]
net: Replace ip_ra_lock with per-net mutex

Since ra_chain is per-net, we may use per-net mutexes
to protect them in ip_ra_control(). This improves
scalability.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Make ip_ra_chain per struct net
Kirill Tkhai [Thu, 22 Mar 2018 09:45:32 +0000 (12:45 +0300)]
net: Make ip_ra_chain per struct net

This is optimization, which makes ip_call_ra_chain()
iterate less sockets to find the sockets it's looking for.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Revert "ipv4: fix a deadlock in ip_ra_control"
Kirill Tkhai [Thu, 22 Mar 2018 09:45:22 +0000 (12:45 +0300)]
net: Revert "ipv4: fix a deadlock in ip_ra_control"

This reverts commit 1215e51edad1.
Since raw_close() is used on every RAW socket destruction,
the changes made by 1215e51edad1 scale sadly. This clearly
seen on endless unshare(CLONE_NEWNET) test, and cleanup_net()
kwork spends a lot of time waiting for rtnl_lock() introduced
by this commit.

Previous patch moved IP_ROUTER_ALERT out of rtnl_lock(),
so we revert this patch.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Move IP_ROUTER_ALERT out of lock_sock(sk)
Kirill Tkhai [Thu, 22 Mar 2018 09:45:12 +0000 (12:45 +0300)]
net: Move IP_ROUTER_ALERT out of lock_sock(sk)

ip_ra_control() does not need sk_lock. Who are the another
users of ip_ra_chain? ip_mroute_setsockopt() doesn't take
sk_lock, while parallel IP_ROUTER_ALERT syscalls are
synchronized by ip_ra_lock. So, we may move this command
out of sk_lock.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Revert "ipv4: get rid of ip_ra_lock"
Kirill Tkhai [Thu, 22 Mar 2018 09:45:02 +0000 (12:45 +0300)]
net: Revert "ipv4: get rid of ip_ra_lock"

This reverts commit ba3f571d5dde. The commit was made
after 1215e51edad1 "ipv4: fix a deadlock in ip_ra_control",
and killed ip_ra_lock, which became useless after rtnl_lock()
made used to destroy every raw ipv4 socket. This scales
very bad, and next patch in series reverts 1215e51edad1.
ip_ra_lock will be used again.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoliquidio: Added support for trusted VF
Intiyaz Basha [Thu, 22 Mar 2018 06:30:54 +0000 (23:30 -0700)]
liquidio: Added support for trusted VF

When a VF is trusted, all promiscuous traffic will only be sent to that VF.
In normal operation promiscuous traffic is sent to the PF. There can be
only one trusted VF per PF

Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'rmnet-next'
David S. Miller [Thu, 22 Mar 2018 19:00:45 +0000 (15:00 -0400)]
Merge branch 'rmnet-next'

Subash Abhinov Kasiviswanathan says:

====================
net: qualcomm: rmnet: Updates 2018-03-12

This series contains some minor updates for rmnet driver.

Patch 1 contains fixes for sparse warnings.
Patch 2 updates the copyright date to 2018.
Patch 3 is a cleanup in receive path.
Patch 4 has the new rmnet netlink attributes in uapi and updates the usage.
Patch 5 has the implementation of the fill_info operation.

v1->v2: Remove the force casts since the data type is changed to __be
types as mentioned by David.
v2->v3: Update copyright in files which actually had changes as
mentioned by Joe.
v3->v4: Add new netlink attributes for mux_id and flags instead of using the
the vlan attributes as mentioned by David. The rmnet specific flags are also
moved to uapi. The netlink updates are done as part of #4 and #5 has the
fill_info operation.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: qualcomm: rmnet: Implement fill_info
Subash Abhinov Kasiviswanathan [Thu, 22 Mar 2018 01:48:15 +0000 (19:48 -0600)]
net: qualcomm: rmnet: Implement fill_info

This is needed to query the mux_id and flags of a rmnet device.

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: qualcomm: rmnet: Export mux_id and flags to netlink
Subash Abhinov Kasiviswanathan [Thu, 22 Mar 2018 01:48:14 +0000 (19:48 -0600)]
net: qualcomm: rmnet: Export mux_id and flags to netlink

Define new netlink attributes for rmnet mux_id and flags. These
flags / mux_id were earlier using vlan flags / id respectively.
The flag bits are also moved to uapi and are renamed with
prefix RMNET_FLAG_*.

Also add the rmnet policy to handle the new netlink attributes.

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: qualcomm: rmnet: Remove unnecessary device assignment
Subash Abhinov Kasiviswanathan [Thu, 22 Mar 2018 01:48:13 +0000 (19:48 -0600)]
net: qualcomm: rmnet: Remove unnecessary device assignment

Device of the de-aggregated skb is correctly assigned after inspecting
the mux_id, so remove the assignment in rmnet_map_deaggregate().

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: qualcomm: rmnet: Update copyright year to 2018
Subash Abhinov Kasiviswanathan [Thu, 22 Mar 2018 01:48:12 +0000 (19:48 -0600)]
net: qualcomm: rmnet: Update copyright year to 2018

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: qualcomm: rmnet: Fix casting issues
Subash Abhinov Kasiviswanathan [Thu, 22 Mar 2018 01:48:11 +0000 (19:48 -0600)]
net: qualcomm: rmnet: Fix casting issues

Fix warnings which were reported when running with sparse
(make C=1 CF=-D__CHECK_ENDIAN__)

drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:81:15:
warning: cast to restricted __be16
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:271:37:
warning: incorrect type in assignment (different base types)
expected unsigned short [unsigned] [usertype] pkt_len
got restricted __be16 [usertype] <noident>
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:287:29:
warning: incorrect type in assignment (different base types)
expected unsigned short [unsigned] [usertype] pkt_len
got restricted __be16 [usertype] <noident>
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:310:22:
warning: cast to restricted __be16
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:319:13:
warning: cast to restricted __be16
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c:49:18:
warning: cast to restricted __be16
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c:50:18:
warning: cast to restricted __be32
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c:74:21:
warning: cast to restricted __be16

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agogre: fix TUNNEL_SEQ bit check on sequence numbering
Colin Ian King [Wed, 21 Mar 2018 19:34:58 +0000 (19:34 +0000)]
gre: fix TUNNEL_SEQ bit check on sequence numbering

The current logic of flags | TUNNEL_SEQ is always non-zero and hence
sequence numbers are always incremented no matter the setting of the
TUNNEL_SEQ bit.  Fix this by using & instead of |.

Detected by CoverityScan, CID#1466039 ("Operands don't affect result")

Fixes: 77a5196a804e ("gre: add sequence number for collect md mode.")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoDocumentation/networking: Add net DIM documentation
Tal Gilboa [Wed, 21 Mar 2018 18:33:45 +0000 (20:33 +0200)]
Documentation/networking: Add net DIM documentation

Net DIM is a generic algorithm, purposed for dynamically
optimizing network devices interrupt moderation. This
document describes how it works and how to use it.

Signed-off-by: Tal Gilboa <talgi@mellanox.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: use correct index on array mvpp2_pools
Colin Ian King [Wed, 21 Mar 2018 17:31:15 +0000 (17:31 +0000)]
net: mvpp2: use correct index on array mvpp2_pools

Array mvpp2_pools is being indexed by long_log_pool, however this
looks like a cut-n-paste bug and in fact should be short_log_pool.

Detected by CoverityScan, CID#1466113 ("Copy-paste error")

Fixes: 576193f2d579 ("net: mvpp2: jumbo frames support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'tipc-diag'
David S. Miller [Thu, 22 Mar 2018 18:44:11 +0000 (14:44 -0400)]
Merge branch 'tipc-diag'

GhantaKrishnamurthy MohanKrishna says:

====================
tipc: socket diagnostics additions for AF_TIPC

The following patchsets add socket diagnostics support for AF_TIPC by
using the sock diag framework. The patchset was created on top of
commit id: fb66cb0.

New iproute2 package is needed to use this functionality which will
be sent for review in a seperate mail.

The commit series improves diagnosis of tipc sockets by exporting the
configuration, states and statistics of sockets.

The series has been co-authored by Parthasarathy Bhuvaragan and
consist of two parts:

1-2:  Adaptations of existing code to support sock_diag framework.
We modify existing functions to support socket diagnostics. Required
information about the sockets are exported.

3:  Step sk_drops during packet drop.
This occurs if the packet cannot be queued due to queue length exceeding
configured thresholds.

The diag module is optional, and if enabled it will be loaded on demand
when needed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotipc: step sk->sk_drops when rcv buffer is full
GhantaKrishnamurthy MohanKrishna [Wed, 21 Mar 2018 13:37:45 +0000 (14:37 +0100)]
tipc: step sk->sk_drops when rcv buffer is full

Currently when tipc is unable to queue a received message on a
socket, the message is rejected back to the sender with error
TIPC_ERR_OVERLOAD. However, the application on this socket
has no knowledge about these discards.

In this commit, we try to step the sk_drops counter when tipc
is unable to queue a received message. Export sk_drops
using tipc socket diagnostics.

Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotipc: implement socket diagnostics for AF_TIPC
GhantaKrishnamurthy MohanKrishna [Wed, 21 Mar 2018 13:37:44 +0000 (14:37 +0100)]
tipc: implement socket diagnostics for AF_TIPC

This commit adds socket diagnostics capability for AF_TIPC in netlink
family NETLINK_SOCK_DIAG in a new kernel module (diag.ko).

The following are key design considerations:
- config TIPC_DIAG has default y, like INET_DIAG.
- only requests with flag NLM_F_DUMP is supported (dump all).
- tipc_sock_diag_req message is introduced to send filter parameters.
- the response attributes are of TLV, some nested.

To avoid exposing data structures between diag and tipc modules and
avoid code duplication, the following additions are required:
- export tipc_nl_sk_walk function to reuse socket iterator.
- export tipc_sk_fill_sock_diag to fill the tipc diag attributes.
- create a sock_diag response message in __tipc_add_sock_diag defined
  in diag.c and use the above exported tipc_sk_fill_sock_diag
  to fill response.

Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotipc: modify socket iterator for sock_diag
GhantaKrishnamurthy MohanKrishna [Wed, 21 Mar 2018 13:37:43 +0000 (14:37 +0100)]
tipc: modify socket iterator for sock_diag

The current socket iterator function tipc_nl_sk_dump, handles socket
locks and calls __tipc_nl_add_sk for each socket.
To reuse this logic in sock_diag implementation, we do minor
modifications to make these functions generic as described below.

In this commit, we add a two new functions __tipc_nl_sk_walk,
__tipc_nl_add_sk_info and modify tipc_nl_sk_dump, __tipc_nl_add_sk
accordingly.

In __tipc_nl_sk_walk we:
1. acquire and release socket locks
2. for each socket, execute the specified callback function

In __tipc_nl_add_sk we:
- Move the netlink attribute insertion to __tipc_nl_add_sk_info.

tipc_nl_sk_dump calls tipc_nl_sk_walk with __tipc_nl_add_sk as argument.

sock_diag will use these generic functions in a later commit.

There is no functional change in this commit.
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomacsec: missing dev_put() on error in macsec_newlink()
Dan Carpenter [Wed, 21 Mar 2018 08:09:01 +0000 (11:09 +0300)]
macsec: missing dev_put() on error in macsec_newlink()

We moved the dev_hold(real_dev); call earlier in the function but forgot
to update the error paths.

Fixes: 0759e552bce7 ("macsec: fix negative refcnt on parent link")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'mac80211-for-davem-2018-03-21' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Thu, 22 Mar 2018 17:19:10 +0000 (13:19 -0400)]
Merge tag 'mac80211-for-davem-2018-03-21' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Two more fixes (in three patches):
 * ath9k_htc doesn't like QoS NDP frames, use regular ones
 * hwsim: set up wmediumd for radios created later
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'mlxsw-Update-supported-firmware-version'
David S. Miller [Thu, 22 Mar 2018 17:13:37 +0000 (13:13 -0400)]
Merge branch 'mlxsw-Update-supported-firmware-version'

Ido Schimmel says:

====================
mlxsw: Update supported firmware version

The first patch bumps the firmware version supported by the driver. The
second patch enables a feature introduced in the new version,
auto-negotiation disable.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum: Add support for auto-negotiation disable mode
Tal Bar [Wed, 21 Mar 2018 07:34:06 +0000 (09:34 +0200)]
mlxsw: spectrum: Add support for auto-negotiation disable mode

In 'auto-neg off' the device have sent AN (auto-negotiation) frames
with the forced speed. Thus, fix it using an_disable_admin field in
Port type and speed (PTYS) register. This field indicates if speed
negotiation frames would be send by the port or not.

Add the field and enable/disable it for 'auto-neg on/off', make the
port to start/stop sending AN (auto-negotiation) frames. Note that for
SwitchX2 the behavior doesn't change (i.e support only AN enabled with
forced speed).

Signed-off-by: Tal Bar <talb@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum: Update the supported firmware to version 13.1620.192
Tal Bar [Wed, 21 Mar 2018 07:34:05 +0000 (09:34 +0200)]
mlxsw: spectrum: Update the supported firmware to version 13.1620.192

This new firmware contains:
- Support for auto-neg disable mode

Signed-off-by: Tal Bar <talb@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'fix-some-bugs-for-HNS3-driver'
David S. Miller [Thu, 22 Mar 2018 17:12:03 +0000 (13:12 -0400)]
Merge branch 'fix-some-bugs-for-HNS3-driver'

Peng Li says:

====================
fix some bugs for HNS3 driver

This patchset fixes some bugs for HNS3 driver:
[Patch 1/11 - 5/11] fix various bugs reported by hisilicon test team.
[Patch 6/11 - 7/11] fix bugs about interrupt coalescing self-adaptive
function.
[Patch 8/11 - 11/11] fix bugs about ethtool_ops.get_link_ksettings.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: fix for not returning problem in get_link_ksettings when phy exists
Fuyun Liang [Wed, 21 Mar 2018 07:49:30 +0000 (15:49 +0800)]
net: hns3: fix for not returning problem in get_link_ksettings when phy exists

When phy exists, phy_ethtool_ksettings_get function is enough to get the
link ksettings. If the phy exists, get_link_ksettings function can return
directly after phy_ethtool_ksettings_get is called.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: add querying speed and duplex support to VF
Fuyun Liang [Wed, 21 Mar 2018 07:49:29 +0000 (15:49 +0800)]
net: hns3: add querying speed and duplex support to VF

This patch adds support for querying speed and duplex by ethtool ethX
to VF.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: add get_link support to VF
Fuyun Liang [Wed, 21 Mar 2018 07:49:28 +0000 (15:49 +0800)]
net: hns3: add get_link support to VF

This patch adds ethtool_ops.get_link support to VF.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: fix for getting wrong link mode problem
Fuyun Liang [Wed, 21 Mar 2018 07:49:27 +0000 (15:49 +0800)]
net: hns3: fix for getting wrong link mode problem

Fixed link mode is returned by hns3_get_link_ksettings. It is
unreasonable.

This patch fixes it by adding some related functions to get link
mode from hardware.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: change the time interval of int_gl calculating
Fuyun Liang [Wed, 21 Mar 2018 07:49:26 +0000 (15:49 +0800)]
net: hns3: change the time interval of int_gl calculating

Since we change the update rate of int_gl from every interrupt to every
one hundred interrupts, the old way to get time interval by int_gl value
is not accurate. This patch calculates the time interval using the jiffies
value.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: change GL update rate
Fuyun Liang [Wed, 21 Mar 2018 07:49:25 +0000 (15:49 +0800)]
net: hns3: change GL update rate

The interrupt coalescing self-adaptive function updates the int_gl every
interrupt. The GL update rate is too faster to get a better new GL value.
This patch changes the GL update rate to every one hundred interrupts.
The GL update rate is defined by HNS3_INT_ADAPT_DOWN_START.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: increase the max time for IMP handle command
Peng Li [Wed, 21 Mar 2018 07:49:24 +0000 (15:49 +0800)]
net: hns3: increase the max time for IMP handle command

It may need more time for IMP handle some command, such as reset.
This patch enlarges the max time for cmd timeout.

Driver will check the IMP result every us, it may break through the
loop when get the right result. So not all command need the max time.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: export pci table of hclge and hclgevf to userspace
Yunsheng Lin [Wed, 21 Mar 2018 07:49:23 +0000 (15:49 +0800)]
net: hns3: export pci table of hclge and hclgevf to userspace

There is no module that is dependent on hclge or hclgevf's symbol,
but hns_enet need them to provide ops for it to run. When there is
a need to auto load the hns3 driver, the auto load will fail because
hclge or hclgevf is not loaded.

Hns_enet has already exported the pci table, so this patch exports
the pci table for hclge and hclgevf module too.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: fix for vlan table lost problem when resetting
Yunsheng Lin [Wed, 21 Mar 2018 07:49:22 +0000 (15:49 +0800)]
net: hns3: fix for vlan table lost problem when resetting

The vlan table in hardware is clear after PF/Core/IMP/Global
reset, which will cause vlan tagged packets not being received
problem.

This patch fixes it by restoring the vlan table after reset.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: fix the VF queue reset flow error
Peng Li [Wed, 21 Mar 2018 07:49:21 +0000 (15:49 +0800)]
net: hns3: fix the VF queue reset flow error

VF queue reset flow is different from PF queue reset flow.
VF driver should stop VF queue first, then send message to PF
and PF do the reset. PF should send a response to VF after
PF complete the queue reset, VF can initialize the queue hw
after get the response.
This patch fixes the VF queue reset flow as the correct step.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: reallocate tx/rx buffer after changing mtu
Fuyun Liang [Wed, 21 Mar 2018 07:49:20 +0000 (15:49 +0800)]
net: hns3: reallocate tx/rx buffer after changing mtu

When changing the mtu, the max frame size also will be changed. The tx
buffer size and the rx buffer size to be allocated are determined by max
frame size. So when max frame size is changed, the tx buffer and rx buffer
need to be reallocated.

When the tc_num is changed, the tx buffer and rx buffer need to be
reallocated too. So calling set_mtu and buffer_alloc separately is better.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agodevlink: Remove top_hierarchy arg to devlink_resource_register
David Ahern [Wed, 21 Mar 2018 02:31:14 +0000 (19:31 -0700)]
devlink: Remove top_hierarchy arg to devlink_resource_register

top_hierarchy arg can be determined by comparing parent_resource_id to
DEVLINK_RESOURCE_ID_PARENT_TOP so it does not need to be a separate
argument.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: Fix functional dsa-loop dependency on FIXED_PHY
Florian Fainelli [Wed, 21 Mar 2018 00:31:10 +0000 (17:31 -0700)]
net: dsa: Fix functional dsa-loop dependency on FIXED_PHY

We have a functional dependency on the FIXED_PHY MDIO bus because we register
fixed PHY devices "the old way" which only works if the code that does this has
had a chance to run before the fixed MDIO bus is probed. Make sure we account
for that and have dsa_loop_bdinfo.o be either built-in or modular depending on
whether CONFIG_FIXED_PHY reflects that too.

Fixes: 98cd1552ea27 ("net: dsa: Mock-up driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'hv_netvsc-fix-races-during-shutdown-and-changes'
David S. Miller [Thu, 22 Mar 2018 16:45:10 +0000 (12:45 -0400)]
Merge branch 'hv_netvsc-fix-races-during-shutdown-and-changes'

Stephen Hemminger says:

====================
hv_netvsc: fix races during shutdown and changes

This set of patches fixes issues identified by Vitaly Kuznetsov and
Mohammed Gamal related to state changes in Hyper-v network driver.

A lot of the issues are because setting up the netvsc device requires
a second step (in work queue) to get all the sub-channels running.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agohv_netvsc: common detach logic
Stephen Hemminger [Tue, 20 Mar 2018 22:03:05 +0000 (15:03 -0700)]
hv_netvsc: common detach logic

Make common function for detaching internals of device
during changes to MTU and RSS. Make sure no more packets
are transmitted and all packets have been received before
doing device teardown.

Change the wait logic to be common and use usleep_range().

Changes transmit enabling logic so that transmit queues are disabled
during the period when lower device is being changed. And enabled
only after sub channels are setup. This avoids issue where it could
be that a packet was being sent while subchannel was not initialized.

Fixes: 8195b1396ec8 ("hv_netvsc: fix deadlock on hotplug")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agohv_netvsc: change GPAD teardown order on older versions
Stephen Hemminger [Tue, 20 Mar 2018 22:03:04 +0000 (15:03 -0700)]
hv_netvsc: change GPAD teardown order on older versions

On older versions of Windows, the host ignores messages after
vmbus channel is closed.

Workaround this by doing what Windows does and send the teardown
before close on older versions of NVSP protocol.

Reported-by: Mohammed Gamal <mgamal@redhat.com>
Fixes: 0cf737808ae7 ("hv_netvsc: netvsc_teardown_gpadl() split")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agohv_netvsc: use RCU to fix concurrent rx and queue changes
Stephen Hemminger [Tue, 20 Mar 2018 22:03:03 +0000 (15:03 -0700)]
hv_netvsc: use RCU to fix concurrent rx and queue changes

The receive processing may continue to happen while the
internal network device state is in RCU grace period.
The internal RNDIS structure is associated with the
internal netvsc_device structure; both have the same
RCU lifetime.

Defer freeing all associated parts until after grace
period.

Fixes: 0cf737808ae7 ("hv_netvsc: netvsc_teardown_gpadl() split")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agohv_netvsc: disable NAPI before channel close
Stephen Hemminger [Tue, 20 Mar 2018 22:03:02 +0000 (15:03 -0700)]
hv_netvsc: disable NAPI before channel close

This makes sure that no CPU is still process packets when
the channel is closed.

Fixes: 76bb5db5c749 ("netvsc: fix use after free on module removal")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/ipv6: Handle onlink flag with multipath routes
David Ahern [Tue, 20 Mar 2018 17:06:59 +0000 (10:06 -0700)]
net/ipv6: Handle onlink flag with multipath routes

For multipath routes the ONLINK flag can be specified per nexthop in
rtnh_flags or globally in rtm_flags. Update ip6_route_multipath_add
to consider the ONLINK setting coming from rtnh_flags. Each loop over
nexthops the config for the sibling route is initialized to the global
config and then per nexthop settings overlayed. The flag is 'or'ed into
fib6_config to handle the ONLINK flag coming from either rtm_flags or
rtnh_flags.

Fixes: fc1e64e1092f ("net/ipv6: Add support for onlink flag")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoselftests: Add multipath tests for onlink flag
David Ahern [Tue, 20 Mar 2018 17:04:30 +0000 (10:04 -0700)]
selftests: Add multipath tests for onlink flag

Add multipath tests for onlink flag: one test with onlink added to
both nexthops, then tests with onlink added to only 1 nexthop.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoppp: avoid loop in xmit recursion detection code
Guillaume Nault [Tue, 20 Mar 2018 15:49:26 +0000 (16:49 +0100)]
ppp: avoid loop in xmit recursion detection code

We already detect situations where a PPP channel sends packets back to
its upper PPP device. While this is enough to avoid deadlocking on xmit
locks, this doesn't prevent packets from looping between the channel
and the unit.

The problem is that ppp_start_xmit() enqueues packets in ppp->file.xq
before checking for xmit recursion. Therefore, __ppp_xmit_process()
might dequeue a packet from ppp->file.xq and send it on the channel
which, in turn, loops it back on the unit. Then ppp_start_xmit()
queues the packet back to ppp->file.xq and __ppp_xmit_process() picks
it up and sends it again through the channel. Therefore, the packet
will loop between __ppp_xmit_process() and ppp_start_xmit() until some
other part of the xmit path drops it.

For L2TP, we rapidly fill the skb's headroom and pppol2tp_xmit() drops
the packet after a few iterations. But PPTP reallocates the headroom
if necessary, letting the loop run and exhaust the machine resources
(as reported in https://bugzilla.kernel.org/show_bug.cgi?id=199109).

Fix this by letting __ppp_xmit_process() enqueue the skb to
ppp->file.xq, so that we can check for recursion before adding it to
the queue. Now ppp_xmit_process() can drop the packet when recursion is
detected.

__ppp_channel_push() is a bit special. It calls __ppp_xmit_process()
without having any actual packet to send. This is used by
ppp_output_wakeup() to re-enable transmission on the parent unit (for
implementations like ppp_async.c, where the .start_xmit() function
might not consume the skb, leaving it in ppp->xmit_pending and
disabling transmission).
Therefore, __ppp_xmit_process() needs to handle the case where skb is
NULL, dequeuing as many packets as possible from ppp->file.xq.

Reported-by: xu heng <xuheng333@zoho.com>
Fixes: 55454a565836 ("ppp: avoid dealock on recursive xmit")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv6: sr: fix NULL pointer dereference when setting encap source address
David Lebrun [Tue, 20 Mar 2018 14:44:56 +0000 (14:44 +0000)]
ipv6: sr: fix NULL pointer dereference when setting encap source address

When using seg6 in encap mode, we call ipv6_dev_get_saddr() to set the
source address of the outer IPv6 header, in case none was specified.
Using skb->dev can lead to BUG() when it is in an inconsistent state.
This patch uses the net_device attached to the skb's dst instead.

[940807.667429] BUG: unable to handle kernel NULL pointer dereference at 000000000000047c
[940807.762427] IP: ipv6_dev_get_saddr+0x8b/0x1d0
[940807.815725] PGD 0 P4D 0
[940807.847173] Oops: 0000 [#1] SMP PTI
[940807.890073] Modules linked in:
[940807.927765] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G        W        4.16.0-rc1-seg6bpf+ #2
[940808.028988] Hardware name: HP ProLiant DL120 G6/ProLiant DL120 G6, BIOS O26    09/06/2010
[940808.128128] RIP: 0010:ipv6_dev_get_saddr+0x8b/0x1d0
[940808.187667] RSP: 0018:ffff88043fd836b0 EFLAGS: 00010206
[940808.251366] RAX: 0000000000000005 RBX: ffff88042cb1c860 RCX: 00000000000000fe
[940808.338025] RDX: 00000000000002c0 RSI: ffff88042cb1c860 RDI: 0000000000004500
[940808.424683] RBP: ffff88043fd83740 R08: 0000000000000000 R09: ffffffffffffffff
[940808.511342] R10: 0000000000000040 R11: 0000000000000000 R12: ffff88042cb1c850
[940808.598012] R13: ffffffff8208e380 R14: ffff88042ac8da00 R15: 0000000000000002
[940808.684675] FS:  0000000000000000(0000) GS:ffff88043fd80000(0000) knlGS:0000000000000000
[940808.783036] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[940808.852975] CR2: 000000000000047c CR3: 00000004255fe000 CR4: 00000000000006e0
[940808.939634] Call Trace:
[940808.970041]  <IRQ>
[940808.995250]  ? ip6t_do_table+0x265/0x640
[940809.043341]  seg6_do_srh_encap+0x28f/0x300
[940809.093516]  ? seg6_do_srh+0x1a0/0x210
[940809.139528]  seg6_do_srh+0x1a0/0x210
[940809.183462]  seg6_output+0x28/0x1e0
[940809.226358]  lwtunnel_output+0x3f/0x70
[940809.272370]  ip6_xmit+0x2b8/0x530
[940809.313185]  ? ac6_proc_exit+0x20/0x20
[940809.359197]  inet6_csk_xmit+0x7d/0xc0
[940809.404173]  tcp_transmit_skb+0x548/0x9a0
[940809.453304]  __tcp_retransmit_skb+0x1a8/0x7a0
[940809.506603]  ? ip6_default_advmss+0x40/0x40
[940809.557824]  ? tcp_current_mss+0x24/0x90
[940809.605925]  tcp_retransmit_skb+0xd/0x80
[940809.654016]  tcp_xmit_retransmit_queue.part.17+0xf9/0x210
[940809.719797]  tcp_ack+0xa47/0x1110
[940809.760612]  tcp_rcv_established+0x13c/0x570
[940809.812865]  tcp_v6_do_rcv+0x151/0x3d0
[940809.858879]  tcp_v6_rcv+0xa5c/0xb10
[940809.901770]  ? seg6_output+0xdd/0x1e0
[940809.946745]  ip6_input_finish+0xbb/0x460
[940809.994837]  ip6_input+0x74/0x80
[940810.034612]  ? ip6_rcv_finish+0xb0/0xb0
[940810.081663]  ipv6_rcv+0x31c/0x4c0
...

Fixes: 6c8702c60b886 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels")
Reported-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David Lebrun <dlebrun@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
David Lebrun [Tue, 20 Mar 2018 14:44:55 +0000 (14:44 +0000)]
ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state

The seg6_build_state() function is called with RCU read lock held,
so we cannot use GFP_KERNEL. This patch uses GFP_ATOMIC instead.

[   92.770271] =============================
[   92.770628] WARNING: suspicious RCU usage
[   92.770921] 4.16.0-rc4+ #12 Not tainted
[   92.771277] -----------------------------
[   92.771585] ./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section!
[   92.772279]
[   92.772279] other info that might help us debug this:
[   92.772279]
[   92.773067]
[   92.773067] rcu_scheduler_active = 2, debug_locks = 1
[   92.773514] 2 locks held by ip/2413:
[   92.773765]  #0:  (rtnl_mutex){+.+.}, at: [<00000000e5461720>] rtnetlink_rcv_msg+0x441/0x4d0
[   92.774377]  #1:  (rcu_read_lock){....}, at: [<00000000df4f161e>] lwtunnel_build_state+0x59/0x210
[   92.775065]
[   92.775065] stack backtrace:
[   92.775371] CPU: 0 PID: 2413 Comm: ip Not tainted 4.16.0-rc4+ #12
[   92.775791] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1.fc27 04/01/2014
[   92.776608] Call Trace:
[   92.776852]  dump_stack+0x7d/0xbc
[   92.777130]  __schedule+0x133/0xf00
[   92.777393]  ? unwind_get_return_address_ptr+0x50/0x50
[   92.777783]  ? __sched_text_start+0x8/0x8
[   92.778073]  ? rcu_is_watching+0x19/0x30
[   92.778383]  ? kernel_text_address+0x49/0x60
[   92.778800]  ? __kernel_text_address+0x9/0x30
[   92.779241]  ? unwind_get_return_address+0x29/0x40
[   92.779727]  ? pcpu_alloc+0x102/0x8f0
[   92.780101]  _cond_resched+0x23/0x50
[   92.780459]  __mutex_lock+0xbd/0xad0
[   92.780818]  ? pcpu_alloc+0x102/0x8f0
[   92.781194]  ? seg6_build_state+0x11d/0x240
[   92.781611]  ? save_stack+0x9b/0xb0
[   92.781965]  ? __ww_mutex_wakeup_for_backoff+0xf0/0xf0
[   92.782480]  ? seg6_build_state+0x11d/0x240
[   92.782925]  ? lwtunnel_build_state+0x1bd/0x210
[   92.783393]  ? ip6_route_info_create+0x687/0x1640
[   92.783846]  ? ip6_route_add+0x74/0x110
[   92.784236]  ? inet6_rtm_newroute+0x8a/0xd0

Fixes: 6c8702c60b886 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels")
Signed-off-by: David Lebrun <dlebrun@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'aquantia-fixes'
David S. Miller [Thu, 22 Mar 2018 16:02:50 +0000 (12:02 -0400)]
Merge branch 'aquantia-fixes'

Igor Russkikh says:

====================
Aquantia atlantic hot fixes 03-2018

This is a set of atlantic driver hot fixes for various areas:

Some issues with hardware reset covered,
Fixed napi_poll flood happening on some traffic conditions,
Allow system to change MAC address on live device,
Add pci shutdown handler.

patch v2:
- reverse christmas tree
- remove driver private parameter, replacing it with define.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: aquantia: driver version bump
Igor Russkikh [Tue, 20 Mar 2018 11:40:37 +0000 (14:40 +0300)]
net: aquantia: driver version bump

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: aquantia: Implement pci shutdown callback
Igor Russkikh [Tue, 20 Mar 2018 11:40:36 +0000 (14:40 +0300)]
net: aquantia: Implement pci shutdown callback

We should close link and all NIC operations during shutdown.
On some systems graceful reboot never closes NIC interface on its own,
but only indicates pci device shutdown. Without explicit handler, NIC
rx rings continued to transfer DMA data into prepared buffers while CPU
rebooted already. That caused memory corruptions on soft reboot.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: aquantia: Allow live mac address changes
Igor Russkikh [Tue, 20 Mar 2018 11:40:35 +0000 (14:40 +0300)]
net: aquantia: Allow live mac address changes

There is nothing prevents us from changing MAC on the running interface.
Allow this with ndev priv flag.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: aquantia: Add tx clean budget and valid budget handling logic
Igor Russkikh [Tue, 20 Mar 2018 11:40:34 +0000 (14:40 +0300)]
net: aquantia: Add tx clean budget and valid budget handling logic

We should report to napi full budget only when we have more job to do.
Before this fix, on any tx queue cleanup we forced napi to do poll again.
Thats a waste of cpu resources and caused storming with napi polls when
there was at least one tx on each interrupt.

With this fix we report full budget only when there is more job on TX
to do. Or, as before, when rx budget was fully consumed.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: aquantia: Change inefficient wait loop on fw data reads
Igor Russkikh [Tue, 20 Mar 2018 11:40:33 +0000 (14:40 +0300)]
net: aquantia: Change inefficient wait loop on fw data reads

B1 hardware changes behavior of mailbox interface, it has busy bit
always raised. Data ready condition should be detected by increment
of address register.

Old code has empty `for` loop, and that caused cpu overloads on B1
hardware. aq_nic_service_timer_cb consumed ~100ms because of that.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: aquantia: Fix a regression with reset on old firmware
Igor Russkikh [Tue, 20 Mar 2018 11:40:32 +0000 (14:40 +0300)]
net: aquantia: Fix a regression with reset on old firmware

FW 1.5.58 and below needs a fixed delay even after 0x18 register
is filled. Otherwise, setting MPI_INIT state too fast causes
traffic hang.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: aquantia: Fix hardware reset when SPI may rarely hangup
Igor Russkikh [Tue, 20 Mar 2018 11:40:31 +0000 (14:40 +0300)]
net: aquantia: Fix hardware reset when SPI may rarely hangup

Under some circumstances (notably using thunderbolt interface) SPI
on chip reset may be in active transaction.
Here we forcibly cleanup SPI to prevent possible hangups.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'cxgb4-rdma'
David S. Miller [Thu, 22 Mar 2018 15:59:12 +0000 (11:59 -0400)]
Merge branch 'cxgb4-rdma'

Raju Rangoju says:

====================
Add support for RDMA enhancements in cxgb4

Allocates the HW-resources and provide the necessary routines for the
upper layer driver (rdma/iw_cxgb4) to enable the RDMA SRQ support for
Chelsio adapters.

Advertise support for write with immediate work request
Advertise support for write with completion

v3: modified memory allocation as per Stefano's suggestion

v2: fixed the patching issues and also
    fixed the following based on review comments of Stefano Brivio
 - using kvzalloc instead of vzalloc
 - using #define instead of enum
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: Support firmware rdma write completion work request.
Raju Rangoju [Tue, 20 Mar 2018 10:11:42 +0000 (15:41 +0530)]
cxgb4: Support firmware rdma write completion work request.

If FW supports RDMA WRITE_COMPLETION functionality, then advertise that
to the ULDs. This will be used by iw_cxgb4 to allow WRITE_COMPLETION
work requests.

Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: Support firmware rdma write with immediate work request.
Raju Rangoju [Tue, 20 Mar 2018 10:11:41 +0000 (15:41 +0530)]
cxgb4: Support firmware rdma write with immediate work request.

If FW supports RDMA WRITE_WITH_IMMEDATE functionality, then advertise
that
to the ULDs. This will be used by iw_cxgb4 to allow WRITE_WITH_IMMEDIATE
work requests.

Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: Add support to query HW SRQ parameters
Raju Rangoju [Tue, 20 Mar 2018 10:11:40 +0000 (15:41 +0530)]
cxgb4: Add support to query HW SRQ parameters

This patch adds support to query FW for the HW SRQ table start/end, and
advertise that for ULDs.

Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: Add support to initialise/read SRQ entries
Raju Rangoju [Tue, 20 Mar 2018 10:11:39 +0000 (15:41 +0530)]
cxgb4: Add support to initialise/read SRQ entries

- This patch adds support to initialise srq table and read srq entries

Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: Adds CPL support for Shared Receive Queues
Raju Rangoju [Tue, 20 Mar 2018 10:11:38 +0000 (15:41 +0530)]
cxgb4: Adds CPL support for Shared Receive Queues

- Add srq table query cpl support for srq
- Add cpl_abort_req_rss6 and cpl_abort_rpl_rss6 structs.
- Add accessors, macros to get the SRQ IDX value.

Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>