1. 06 Oct, 2019 15 commits
  2. 05 Oct, 2019 25 commits
    • David S. Miller's avatar
      Merge branch 'create-netdevsim-instances-in-namespace' · fbe3d0c7
      David S. Miller authored
      Jiri Pirko says:
      
      ====================
      create netdevsim instances in namespace
      
      Allow user to create netdevsim devlink and netdevice instances in a
      network namespace according to the namespace where the user resides in.
      Add a selftest to test this.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fbe3d0c7
    • Jiri Pirko's avatar
      selftests: test creating netdevsim inside network namespace · c04d71b5
      Jiri Pirko authored
      Add a test that creates netdevsim instance inside network namespace
      and verifies that the related devlink instance and port netdevices
      reside in the namespace.
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c04d71b5
    • Jiri Pirko's avatar
      netdevsim: create devlink and netdev instances in namespace · 7b60027b
      Jiri Pirko authored
      When user does create new netdevsim instance using sysfs bus file,
      create the devlink instance and related netdev instance in the namespace
      of the caller.
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7b60027b
    • Jiri Pirko's avatar
      net: devlink: export devlink net setter · 8273fd84
      Jiri Pirko authored
      For newly allocated devlink instance allow drivers to set net struct
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8273fd84
    • David S. Miller's avatar
      Merge branch 'net-tls-add-ctrl-path-tracing-and-statistics' · 128d23c3
      David S. Miller authored
      Jakub Kicinski says:
      
      ====================
      net/tls: add ctrl path tracing and statistics
      
      This set adds trace events related to TLS offload and basic MIB stats
      for TLS.
      
      First patch contains the TLS offload related trace points. Those are
      helpful in troubleshooting offload issues, especially around the
      resync paths.
      
      Second patch adds a tracepoint to the fastpath of device offload,
      it's separated out in case there will be objections to adding
      fast path tracepoints. Again, it's quite useful for debugging
      offload issues.
      
      Next four patches add MIB statistics. The statistics are implemented
      as per-cpu per-netns counters. Since there are currently no fast path
      statistics we could move to atomic variables. Per-CPU seem more common.
      
      Most basic statistics are number of created and live sessions, broken
      out to offloaded and non-offloaded. Users seem to like those a lot.
      
      Next there is a statistic for decryption errors. These are primarily
      useful for device offload debug, in normal deployments decryption
      errors should not be common.
      
      Last but not least a counter for device RX resync.
      ====================
      Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      128d23c3
    • Jakub Kicinski's avatar
      net/tls: add TlsDeviceRxResync statistic · a4d26fdb
      Jakub Kicinski authored
      Add a statistic for number of RX resyncs sent down to the NIC.
      Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a4d26fdb
    • Jakub Kicinski's avatar
      net/tls: add TlsDecryptError stat · 5c5ec668
      Jakub Kicinski authored
      Add a statistic for TLS record decryption errors.
      
      Since devices are supposed to pass records as-is when they
      encounter errors this statistic will count bad records in
      both pure software and inline crypto configurations.
      Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5c5ec668
    • Jakub Kicinski's avatar
      net/tls: add statistics for installed sessions · b32fd3cc
      Jakub Kicinski authored
      Add SNMP stats for number of sockets with successfully
      installed sessions.  Break them down to software and
      hardware ones.  Note that if hardware offload fails
      stack uses software implementation, and counts the
      session appropriately.
      Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b32fd3cc
    • Jakub Kicinski's avatar
      net/tls: add skeleton of MIB statistics · d26b698d
      Jakub Kicinski authored
      Add a skeleton structure for adding TLS statistics.
      Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d26b698d
    • Jakub Kicinski's avatar
      net/tls: add device decrypted trace point · 9ec1c6ac
      Jakub Kicinski authored
      Add a tracepoint to the TLS offload's fast path. This tracepoint
      can be used to track the decrypted and encrypted status of received
      records. Records decrypted by the device should have decrypted set
      to 1, records which have neither decrypted nor decrypted set are
      partially decrypted, require re-encryption and therefore are most
      expensive to deal with.
      Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9ec1c6ac
    • Jakub Kicinski's avatar
      net/tls: add tracing for device/offload events · 8538d29c
      Jakub Kicinski authored
      Add tracing of device-related interaction to aid performance
      analysis, especially around resync:
      
       tls:tls_device_offload_set
       tls:tls_device_rx_resync_send
       tls:tls_device_rx_resync_nh_schedule
       tls:tls_device_rx_resync_nh_delay
       tls:tls_device_tx_resync_req
       tls:tls_device_tx_resync_send
      Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8538d29c
    • David S. Miller's avatar
    • Linus Torvalds's avatar
      Merge tag 'kbuild-fixes-v5.4' of... · 2d00aee2
      Linus Torvalds authored
      Merge tag 'kbuild-fixes-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - remove unneeded ar-option and KBUILD_ARFLAGS
      
       - remove long-deprecated SUBDIRS
      
       - fix modpost to suppress false-positive warnings for UML builds
      
       - fix namespace.pl to handle relative paths to ${objtree}, ${srctree}
      
       - make setlocalversion work for /bin/sh
      
       - make header archive reproducible
      
       - fix some Makefiles and documents
      
      * tag 'kbuild-fixes-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        kheaders: make headers archive reproducible
        kbuild: update compile-test header list for v5.4-rc2
        kbuild: two minor updates for Documentation/kbuild/modules.rst
        scripts/setlocalversion: clear local variable to make it work for sh
        namespace: fix namespace.pl script to support relative paths
        video/logo: do not generate unneeded logo C files
        video/logo: remove unneeded *.o pattern from clean-files
        integrity: remove pointless subdir-$(CONFIG_...)
        integrity: remove unneeded, broken attempt to add -fshort-wchar
        modpost: fix static EXPORT_SYMBOL warnings for UML build
        kbuild: correct formatting of header in kbuild module docs
        kbuild: remove SUBDIRS support
        kbuild: remove ar-option and KBUILD_ARFLAGS
      2d00aee2
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 126195c9
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Twelve patches mostly small but obvious fixes or cosmetic but small
        updates"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: qla2xxx: Fix Nport ID display value
        scsi: qla2xxx: Fix N2N link up fail
        scsi: qla2xxx: Fix N2N link reset
        scsi: qla2xxx: Optimize NPIV tear down process
        scsi: qla2xxx: Fix stale mem access on driver unload
        scsi: qla2xxx: Fix unbound sleep in fcport delete path.
        scsi: qla2xxx: Silence fwdump template message
        scsi: hisi_sas: Make three functions static
        scsi: megaraid: disable device when probe failed after enabled device
        scsi: storvsc: setup 1:1 mapping between hardware queue and CPU queue
        scsi: qedf: Remove always false 'tmp_prio < 0' statement
        scsi: ufs: skip shutdown if hba is not powered
        scsi: bnx2fc: Handle scope bits when array returns BUSY or TSF
      126195c9
    • Linus Torvalds's avatar
      Merge branch 'readdir' (readdir speedup and sanity checking) · 4f11918a
      Linus Torvalds authored
      This makes getdents() and getdents64() do sanity checking on the
      pathname that it gives to user space.  And to mitigate the performance
      impact of that, it first cleans up the way it does the user copying, so
      that the code avoids doing the SMAP/PAN updates between each part of the
      dirent structure write.
      
      I really wanted to do this during the merge window, but didn't have
      time.  The conversion of filldir to unsafe_put_user() is something I've
      had around for years now in a private branch, but the extra pathname
      checking finally made me clean it up to the point where it is mergable.
      
      It's worth noting that the filename validity checking really should be a
      bit smarter: it would be much better to delay the error reporting until
      the end of the readdir, so that non-corrupted filenames are still
      returned.  But that involves bigger changes, so let's see if anybody
      actually hits the corrupt directory entry case before worrying about it
      further.
      
      * branch 'readdir':
        Make filldir[64]() verify the directory entry filename is valid
        Convert filldir[64]() from __put_user() to unsafe_put_user()
      4f11918a
    • Linus Torvalds's avatar
      Make filldir[64]() verify the directory entry filename is valid · 8a23eb80
      Linus Torvalds authored
      This has been discussed several times, and now filesystem people are
      talking about doing it individually at the filesystem layer, so head
      that off at the pass and just do it in getdents{64}().
      
      This is partially based on a patch by Jann Horn, but checks for NUL
      bytes as well, and somewhat simplified.
      
      There's also commentary about how it might be better if invalid names
      due to filesystem corruption don't cause an immediate failure, but only
      an error at the end of the readdir(), so that people can still see the
      filenames that are ok.
      
      There's also been discussion about just how much POSIX strictly speaking
      requires this since it's about filesystem corruption.  It's really more
      "protect user space from bad behavior" as pointed out by Jann.  But
      since Eric Biederman looked up the POSIX wording, here it is for context:
      
       "From readdir:
      
         The readdir() function shall return a pointer to a structure
         representing the directory entry at the current position in the
         directory stream specified by the argument dirp, and position the
         directory stream at the next entry. It shall return a null pointer
         upon reaching the end of the directory stream. The structure dirent
         defined in the <dirent.h> header describes a directory entry.
      
        From definitions:
      
         3.129 Directory Entry (or Link)
      
         An object that associates a filename with a file. Several directory
         entries can associate names with the same file.
      
        ...
      
         3.169 Filename
      
         A name consisting of 1 to {NAME_MAX} bytes used to name a file. The
         characters composing the name may be selected from the set of all
         character values excluding the slash character and the null byte. The
         filenames dot and dot-dot have special meaning. A filename is
         sometimes referred to as a 'pathname component'."
      
      Note that I didn't bother adding the checks to any legacy interfaces
      that nobody uses.
      
      Also note that if this ends up being noticeable as a performance
      regression, we can fix that to do a much more optimized model that
      checks for both NUL and '/' at the same time one word at a time.
      
      We haven't really tended to optimize 'memchr()', and it only checks for
      one pattern at a time anyway, and we really _should_ check for NUL too
      (but see the comment about "soft errors" in the code about why it
      currently only checks for '/')
      
      See the CONFIG_DCACHE_WORD_ACCESS case of hash_name() for how the name
      lookup code looks for pathname terminating characters in parallel.
      
      Link: https://lore.kernel.org/lkml/20190118161440.220134-2-jannh@google.com/
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Cc: Jann Horn <jannh@google.com>
      Cc: Eric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8a23eb80
    • Linus Torvalds's avatar
      Convert filldir[64]() from __put_user() to unsafe_put_user() · 9f79b78e
      Linus Torvalds authored
      We really should avoid the "__{get,put}_user()" functions entirely,
      because they can easily be mis-used and the original intent of being
      used for simple direct user accesses no longer holds in a post-SMAP/PAN
      world.
      
      Manually optimizing away the user access range check makes no sense any
      more, when the range check is generally much cheaper than the "enable
      user accesses" code that the __{get,put}_user() functions still need.
      
      So instead of __put_user(), use the unsafe_put_user() interface with
      user_access_{begin,end}() that really does generate better code these
      days, and which is generally a nicer interface.  Under some loads, the
      multiple user writes that filldir() does are actually quite noticeable.
      
      This also makes the dirent name copy use unsafe_put_user() with a couple
      of macros.  We do not want to make function calls with SMAP/PAN
      disabled, and the code this generates is quite good when the
      architecture uses "asm goto" for unsafe_put_user() like x86 does.
      
      Note that this doesn't bother with the legacy cases.  Nobody should use
      them anyway, so performance doesn't really matter there.
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      9f79b78e
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · 9819a30c
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix ieeeu02154 atusb driver use-after-free, from Johan Hovold.
      
       2) Need to validate TCA_CBQ_WRROPT netlink attributes, from Eric
          Dumazet.
      
       3) txq null deref in mac80211, from Miaoqing Pan.
      
       4) ionic driver needs to select NET_DEVLINK, from Arnd Bergmann.
      
       5) Need to disable bh during nft_connlimit GC, from Pablo Neira Ayuso.
      
       6) Avoid division by zero in taprio scheduler, from Vladimir Oltean.
      
       7) Various xgmac fixes in stmmac driver from Jose Abreu.
      
       8) Avoid 64-bit division in mlx5 leading to link errors on 32-bit from
          Michal Kubecek.
      
       9) Fix bad VLAN check in rtl8366 DSA driver, from Linus Walleij.
      
      10) Fix sleep while atomic in sja1105, from Vladimir Oltean.
      
      11) Suspend/resume deadlock in stmmac, from Thierry Reding.
      
      12) Various UDP GSO fixes from Josh Hunt.
      
      13) Fix slab out of bounds access in tcp_zerocopy_receive(), from Eric
          Dumazet.
      
      14) Fix OOPS in __ipv6_ifa_notify(), from David Ahern.
      
      15) Memory leak in NFC's llcp_sock_bind, from Eric Dumazet.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (72 commits)
        selftests/net: add nettest to .gitignore
        net: qlogic: Fix memory leak in ql_alloc_large_buffers
        nfc: fix memory leak in llcp_sock_bind()
        sch_dsmark: fix potential NULL deref in dsmark_init()
        net: phy: at803x: use operating parameters from PHY-specific status
        net: phy: extract pause mode
        net: phy: extract link partner advertisement reading
        net: phy: fix write to mii-ctrl1000 register
        ipv6: Handle missing host route in __ipv6_ifa_notify
        net: phy: allow for reset line to be tied to a sleepy GPIO controller
        net: ipv4: avoid mixed n_redirects and rate_tokens usage
        r8152: Set macpassthru in reset_resume callback
        cxgb4:Fix out-of-bounds MSI-X info array access
        Revert "ipv6: Handle race in addrconf_dad_work"
        net: make sock_prot_memory_pressure() return "const char *"
        rxrpc: Fix rxrpc_recvmsg tracepoint
        qmi_wwan: add support for Cinterion CLS8 devices
        tcp: fix slab-out-of-bounds in tcp_zerocopy_receive()
        lib: textsearch: fix escapes in example code
        udp: only do GSO if # of segs > 1
        ...
      9819a30c
    • Linus Torvalds's avatar
      Merge tag 's390-5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 6fe137cb
      Linus Torvalds authored
      Pull s390 fixes from Vasily Gorbik:
      
       - defconfig updates
      
       - Fix build errors with CC_OPTIMIZE_FOR_SIZE due to usage of "i"
         constraint for function arguments. Two kvm changes acked-by Christian
         Borntraeger.
      
       - Fix -Wunused-but-set-variable warnings in mm code.
      
       - Avoid a constant misuse in qdio.
      
       - Handle a case when cpumf is temporarily unavailable.
      
      * tag 's390-5.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        KVM: s390: mark __insn32_query() as __always_inline
        KVM: s390: fix __insn32_query() inline assembly
        s390: update defconfigs
        s390/pci: mark function(s) __always_inline
        s390/mm: mark function(s) __always_inline
        s390/jump_label: mark function(s) __always_inline
        s390/cpu_mf: mark function(s) __always_inline
        s390/atomic,bitops: mark function(s) __always_inline
        s390/mm: fix -Wunused-but-set-variable warnings
        s390: mark __cpacf_query() as __always_inline
        s390/qdio: clarify size of the QIB parm area
        s390/cpumf: Fix indentation in sampling device driver
        s390/cpumsf: Check for CPU Measurement sampling
        s390/cpumf: Use consistant debug print format
      6fe137cb
    • Heiko Carstens's avatar
      KVM: s390: mark __insn32_query() as __always_inline · d0dea733
      Heiko Carstens authored
      __insn32_query() will not compile if the compiler decides to not
      inline it, since it contains an inline assembly with an "i" constraint
      with variable contents.
      Acked-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
      Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
      d0dea733
    • Heiko Carstens's avatar
      KVM: s390: fix __insn32_query() inline assembly · b1c41ac3
      Heiko Carstens authored
      The inline assembly constraints of __insn32_query() tell the compiler
      that only the first byte of "query" is being written to. Intended was
      probably that 32 bytes are written to.
      
      Fix and simplify the code and just use a "memory" clobber.
      
      Fixes: d6681397 ("KVM: s390: provide query function for instructions returning 32 byte")
      Cc: stable@vger.kernel.org # v5.2+
      Acked-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
      Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
      b1c41ac3
    • Dmitry Goldin's avatar
      kheaders: make headers archive reproducible · 86cdd2fd
      Dmitry Goldin authored
      In commit 43d8ce9d ("Provide in-kernel headers to make
      extending kernel easier") a new mechanism was introduced, for kernels
      >=5.2, which embeds the kernel headers in the kernel image or a module
      and exposes them in procfs for use by userland tools.
      
      The archive containing the header files has nondeterminism caused by
      header files metadata. This patch normalizes the metadata and utilizes
      KBUILD_BUILD_TIMESTAMP if provided and otherwise falls back to the
      default behaviour.
      
      In commit f7b101d3 ("kheaders: Move from proc to sysfs") it was
      modified to use sysfs and the script for generation of the archive was
      renamed to what is being patched.
      Signed-off-by: default avatarDmitry Goldin <dgoldin+lkml@protonmail.ch>
      Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      Reviewed-by: default avatarJoel Fernandes (Google) <joel@joelfernandes.org>
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      86cdd2fd
    • Masahiro Yamada's avatar
      kbuild: update compile-test header list for v5.4-rc2 · d188b8c9
      Masahiro Yamada authored
      Commit 6dc280eb ("coda: remove uapi/linux/coda_psdev.h") removed
      a header in question. Some more build errors were fixed. Add more
      headers into the test coverage.
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      d188b8c9
    • Masahiro Yamada's avatar
      kbuild: two minor updates for Documentation/kbuild/modules.rst · 43496709
      Masahiro Yamada authored
      Capitalize the first word in the sentence.
      
      Use obj-m instead of obj-y. obj-y still works, but we have no built-in
      objects in external module builds. So, obj-m is better IMHO.
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      43496709
    • Masahiro Yamada's avatar
      scripts/setlocalversion: clear local variable to make it work for sh · 7a82e3fa
      Masahiro Yamada authored
      Geert Uytterhoeven reports a strange side-effect of commit 858805b3
      ("kbuild: add $(BASH) to run scripts with bash-extension"), which
      inserts the contents of a localversion file in the build directory twice.
      
      [Steps to Reproduce]
        $ echo bar > localversion
        $ mkdir build
        $ cd build/
        $ echo foo > localversion
        $ make -s -f ../Makefile defconfig include/config/kernel.release
        $ cat include/config/kernel.release
        5.4.0-rc1foofoobar
      
      This comes down to the behavior change of local variables.
      
      The 'man sh' on my Ubuntu machine, where sh is an alias to dash,
      explains as follows:
        When a variable is made local, it inherits the initial value and
        exported and readonly flags from the variable with the same name
        in the surrounding scope, if there is one. Otherwise, the variable
        is initially unset.
      
      [Test Code]
      
        foo ()
        {
                local res
                echo "res: $res"
        }
      
        res=1
        foo
      
      [Result]
      
        $ sh test.sh
        res: 1
        $ bash test.sh
        res:
      
      So, scripts/setlocalversion correctly works only for bash in spite of
      its hashbang being #!/bin/sh. Nobody had noticed it before because
      CONFIG_SHELL was previously set to bash almost all the time.
      
      Now that CONFIG_SHELL is set to sh, we must write portable and correct
      code. I gave the Fixes tag to the commit that uncovered the issue.
      
      Clear the variable 'res' in collect_files() to make it work for sh
      (and it also works on distributions where sh is an alias to bash).
      
      Fixes: 858805b3 ("kbuild: add $(BASH) to run scripts with bash-extension")
      Reported-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
      Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      Tested-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
      7a82e3fa