1. 03 2月, 2018 1 次提交
    • A
      net: qlge: use memmove instead of skb_copy_to_linear_data · cfabb177
      Arnd Bergmann 提交于
      gcc-8 points out that the skb_copy_to_linear_data() argument points to
      the skb itself, which makes it run into a problem with overlapping
      memcpy arguments:
      
      In file included from include/linux/ip.h:20,
                       from drivers/net/ethernet/qlogic/qlge/qlge_main.c:26:
      drivers/net/ethernet/qlogic/qlge/qlge_main.c: In function 'ql_realign_skb':
      include/linux/skbuff.h:3378:2: error: 'memcpy' source argument is the same as destination [-Werror=restrict]
        memcpy(skb->data, from, len);
      
      It's unclear to me what the best solution is, maybe it ought to use a
      different helper that adjusts the skb data in a safe way. Simply using
      memmove() here seems like the easiest workaround.
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      cfabb177
  2. 16 11月, 2017 1 次提交
    • M
      mm: remove __GFP_COLD · 453f85d4
      Mel Gorman 提交于
      As the page free path makes no distinction between cache hot and cold
      pages, there is no real useful ordering of pages in the free list that
      allocation requests can take advantage of.  Juding from the users of
      __GFP_COLD, it is likely that a number of them are the result of copying
      other sites instead of actually measuring the impact.  Remove the
      __GFP_COLD parameter which simplifies a number of paths in the page
      allocator.
      
      This is potentially controversial but bear in mind that the size of the
      per-cpu pagelists versus modern cache sizes means that the whole per-cpu
      list can often fit in the L3 cache.  Hence, there is only a potential
      benefit for microbenchmarks that alloc/free pages in a tight loop.  It's
      even worse when THP is taken into account which has little or no chance
      of getting a cache-hot page as the per-cpu list is bypassed and the
      zeroing of multiple pages will thrash the cache anyway.
      
      The truncate microbenchmarks are not shown as this patch affects the
      allocation path and not the free path.  A page fault microbenchmark was
      tested but it showed no sigificant difference which is not surprising
      given that the __GFP_COLD branches are a miniscule percentage of the
      fault path.
      
      Link: http://lkml.kernel.org/r/20171018075952.10627-9-mgorman@techsingularity.netSigned-off-by: NMel Gorman <mgorman@techsingularity.net>
      Acked-by: NVlastimil Babka <vbabka@suse.cz>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Dave Hansen <dave.hansen@intel.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      453f85d4
  3. 11 11月, 2017 1 次提交
  4. 02 11月, 2017 1 次提交
    • G
      License cleanup: add SPDX GPL-2.0 license identifier to files with no license · b2441318
      Greg Kroah-Hartman 提交于
      Many source files in the tree are missing licensing information, which
      makes it harder for compliance tools to determine the correct license.
      
      By default all files without license information are under the default
      license of the kernel, which is GPL version 2.
      
      Update the files which contain no license information with the 'GPL-2.0'
      SPDX license identifier.  The SPDX identifier is a legally binding
      shorthand, which can be used instead of the full boiler plate text.
      
      This patch is based on work done by Thomas Gleixner and Kate Stewart and
      Philippe Ombredanne.
      
      How this work was done:
      
      Patches were generated and checked against linux-4.14-rc6 for a subset of
      the use cases:
       - file had no licensing information it it.
       - file was a */uapi/* one with no licensing information in it,
       - file was a */uapi/* one with existing licensing information,
      
      Further patches will be generated in subsequent months to fix up cases
      where non-standard license headers were used, and references to license
      had to be inferred by heuristics based on keywords.
      
      The analysis to determine which SPDX License Identifier to be applied to
      a file was done in a spreadsheet of side by side results from of the
      output of two independent scanners (ScanCode & Windriver) producing SPDX
      tag:value files created by Philippe Ombredanne.  Philippe prepared the
      base worksheet, and did an initial spot review of a few 1000 files.
      
      The 4.13 kernel was the starting point of the analysis with 60,537 files
      assessed.  Kate Stewart did a file by file comparison of the scanner
      results in the spreadsheet to determine which SPDX license identifier(s)
      to be applied to the file. She confirmed any determination that was not
      immediately clear with lawyers working with the Linux Foundation.
      
      Criteria used to select files for SPDX license identifier tagging was:
       - Files considered eligible had to be source code files.
       - Make and config files were included as candidates if they contained >5
         lines of source
       - File already had some variant of a license header in it (even if <5
         lines).
      
      All documentation files were explicitly excluded.
      
      The following heuristics were used to determine which SPDX license
      identifiers to apply.
      
       - when both scanners couldn't find any license traces, file was
         considered to have no license information in it, and the top level
         COPYING file license applied.
      
         For non */uapi/* files that summary was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0                                              11139
      
         and resulted in the first patch in this series.
      
         If that file was a */uapi/* path one, it was "GPL-2.0 WITH
         Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0 WITH Linux-syscall-note                        930
      
         and resulted in the second patch in this series.
      
       - if a file had some form of licensing information in it, and was one
         of the */uapi/* ones, it was denoted with the Linux-syscall-note if
         any GPL family license was found in the file or had no licensing in
         it (per prior point).  Results summary:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|------
         GPL-2.0 WITH Linux-syscall-note                       270
         GPL-2.0+ WITH Linux-syscall-note                      169
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
         LGPL-2.1+ WITH Linux-syscall-note                      15
         GPL-1.0+ WITH Linux-syscall-note                       14
         ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
         LGPL-2.0+ WITH Linux-syscall-note                       4
         LGPL-2.1 WITH Linux-syscall-note                        3
         ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
         ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1
      
         and that resulted in the third patch in this series.
      
       - when the two scanners agreed on the detected license(s), that became
         the concluded license(s).
      
       - when there was disagreement between the two scanners (one detected a
         license but the other didn't, or they both detected different
         licenses) a manual inspection of the file occurred.
      
       - In most cases a manual inspection of the information in the file
         resulted in a clear resolution of the license that should apply (and
         which scanner probably needed to revisit its heuristics).
      
       - When it was not immediately clear, the license identifier was
         confirmed with lawyers working with the Linux Foundation.
      
       - If there was any question as to the appropriate license identifier,
         the file was flagged for further research and to be revisited later
         in time.
      
      In total, over 70 hours of logged manual review was done on the
      spreadsheet to determine the SPDX license identifiers to apply to the
      source files by Kate, Philippe, Thomas and, in some cases, confirmation
      by lawyers working with the Linux Foundation.
      
      Kate also obtained a third independent scan of the 4.13 code base from
      FOSSology, and compared selected files where the other two scanners
      disagreed against that SPDX file, to see if there was new insights.  The
      Windriver scanner is based on an older version of FOSSology in part, so
      they are related.
      
      Thomas did random spot checks in about 500 files from the spreadsheets
      for the uapi headers and agreed with SPDX license identifier in the
      files he inspected. For the non-uapi files Thomas did random spot checks
      in about 15000 files.
      
      In initial set of patches against 4.14-rc6, 3 files were found to have
      copy/paste license identifier errors, and have been fixed to reflect the
      correct identifier.
      
      Additionally Philippe spent 10 hours this week doing a detailed manual
      inspection and review of the 12,461 patched files from the initial patch
      version early this week with:
       - a full scancode scan run, collecting the matched texts, detected
         license ids and scores
       - reviewing anything where there was a license detected (about 500+
         files) to ensure that the applied SPDX license was correct
       - reviewing anything where there was no detection but the patch license
         was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
         SPDX license was correct
      
      This produced a worksheet with 20 files needing minor correction.  This
      worksheet was then exported into 3 different .csv files for the
      different types of files to be modified.
      
      These .csv files were then reviewed by Greg.  Thomas wrote a script to
      parse the csv files and add the proper SPDX tag to the file, in the
      format that the file expected.  This script was further refined by Greg
      based on the output to detect more types of files automatically and to
      distinguish between header and source .c files (which need different
      comment types.)  Finally Greg ran the script using the .csv files to
      generate the patches.
      Reviewed-by: NKate Stewart <kstewart@linuxfoundation.org>
      Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
      Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      b2441318
  5. 05 10月, 2017 1 次提交
    • K
      timer: Remove init_timer_deferrable() in favor of timer_setup() · df7e828c
      Kees Cook 提交于
      This refactors the only users of init_timer_deferrable() to use
      the new timer_setup() and from_timer(). Removes definition of
      init_timer_deferrable().
      Signed-off-by: NKees Cook <keescook@chromium.org>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Acked-by: David S. Miller <davem@davemloft.net> # for networking parts
      Acked-by: Sebastian Reichel <sre@kernel.org> # for drivers/hsi parts
      Cc: linux-mips@linux-mips.org
      Cc: Petr Mladek <pmladek@suse.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Lai Jiangshan <jiangshanlai@gmail.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Kalle Valo <kvalo@qca.qualcomm.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pavel Machek <pavel@ucw.cz>
      Cc: linux1394-devel@lists.sourceforge.net
      Cc: Chris Metcalf <cmetcalf@mellanox.com>
      Cc: linux-s390@vger.kernel.org
      Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
      Cc: Wim Van Sebroeck <wim@iguana.be>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Ursula Braun <ubraun@linux.vnet.ibm.com>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Viresh Kumar <viresh.kumar@linaro.org>
      Cc: Harish Patil <harish.patil@cavium.com>
      Cc: Stephen Boyd <sboyd@codeaurora.org>
      Cc: Guenter Roeck <linux@roeck-us.net>
      Cc: Manish Chopra <manish.chopra@cavium.com>
      Cc: Len Brown <len.brown@intel.com>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: linux-pm@vger.kernel.org
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Tejun Heo <tj@kernel.org>
      Cc: Julian Wiedmann <jwi@linux.vnet.ibm.com>
      Cc: John Stultz <john.stultz@linaro.org>
      Cc: Mark Gross <mark.gross@intel.com>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: linux-watchdog@vger.kernel.org
      Cc: linux-scsi@vger.kernel.org
      Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: linux-wireless@vger.kernel.org
      Cc: Sebastian Reichel <sre@kernel.org>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
      Cc: Michael Reed <mdr@sgi.com>
      Cc: netdev@vger.kernel.org
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: linuxppc-dev@lists.ozlabs.org
      Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
      Link: https://lkml.kernel.org/r/1507159627-127660-6-git-send-email-keescook@chromium.org
      df7e828c
  6. 25 8月, 2017 1 次提交
    • A
      qlge: avoid memcpy buffer overflow · e58f9583
      Arnd Bergmann 提交于
      gcc-8.0.0 (snapshot) points out that we copy a variable-length string
      into a fixed length field using memcpy() with the destination length,
      and that ends up copying whatever follows the string:
      
          inlined from 'ql_core_dump' at drivers/net/ethernet/qlogic/qlge/qlge_dbg.c:1106:2:
      drivers/net/ethernet/qlogic/qlge/qlge_dbg.c:708:2: error: 'memcpy' reading 15 bytes from a region of size 14 [-Werror=stringop-overflow=]
        memcpy(seg_hdr->description, desc, (sizeof(seg_hdr->description)) - 1);
      
      Changing it to use strncpy() will instead zero-pad the destination,
      which seems to be the right thing to do here.
      
      The bug is probably harmless, but it seems like a good idea to address
      it in stable kernels as well, if only for the purpose of building with
      gcc-8 without warnings.
      
      Fixes: a61f8026 ("qlge: Add ethtool register dump function.")
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e58f9583
  7. 15 8月, 2017 1 次提交
  8. 16 6月, 2017 1 次提交
    • J
      networking: introduce and use skb_put_data() · 59ae1d12
      Johannes Berg 提交于
      A common pattern with skb_put() is to just want to memcpy()
      some data into the new space, introduce skb_put_data() for
      this.
      
      An spatch similar to the one for skb_put_zero() converts many
      of the places using it:
      
          @@
          identifier p, p2;
          expression len, skb, data;
          type t, t2;
          @@
          (
          -p = skb_put(skb, len);
          +p = skb_put_data(skb, data, len);
          |
          -p = (t)skb_put(skb, len);
          +p = skb_put_data(skb, data, len);
          )
          (
          p2 = (t2)p;
          -memcpy(p2, data, len);
          |
          -memcpy(p, data, len);
          )
      
          @@
          type t, t2;
          identifier p, p2;
          expression skb, data;
          @@
          t *p;
          ...
          (
          -p = skb_put(skb, sizeof(t));
          +p = skb_put_data(skb, data, sizeof(t));
          |
          -p = (t *)skb_put(skb, sizeof(t));
          +p = skb_put_data(skb, data, sizeof(t));
          )
          (
          p2 = (t2)p;
          -memcpy(p2, data, sizeof(*p));
          |
          -memcpy(p, data, sizeof(*p));
          )
      
          @@
          expression skb, len, data;
          @@
          -memcpy(skb_put(skb, len), data, len);
          +skb_put_data(skb, data, len);
      
      (again, manually post-processed to retain some comments)
      Reviewed-by: NStephen Hemminger <stephen@networkplumber.org>
      Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      59ae1d12
  9. 09 5月, 2017 1 次提交
  10. 07 4月, 2017 1 次提交
  11. 10 3月, 2017 2 次提交
  12. 21 2月, 2017 1 次提交
  13. 31 1月, 2017 1 次提交
  14. 21 10月, 2016 1 次提交
    • J
      ethernet: use net core MTU range checking in more drivers · d894be57
      Jarod Wilson 提交于
      Somehow, I missed a healthy number of ethernet drivers in the last pass.
      Most of these drivers either were in need of an updated max_mtu to make
      jumbo frames possible to enable again. In a few cases, also setting a
      different min_mtu to match previous lower bounds. There are also a few
      drivers that had no upper bounds checking, so they're getting a brand new
      ETH_MAX_MTU that is identical to IP_MAX_MTU, but accessible by includes
      all ethernet and ethernet-like drivers all have already.
      
      acenic:
      - min_mtu = 0, max_mtu = 9000
      
      amazon/ena:
      - min_mtu = 128, max_mtu = adapter->max_mtu
      
      amd/xgbe:
      - min_mtu = 0, max_mtu = 9000
      
      sb1250:
      - min_mtu = 0, max_mtu = 1518
      
      cxgb3:
      - min_mtu = 81, max_mtu = 65535
      
      cxgb4:
      - min_mtu = 81, max_mtu = 9600
      
      cxgb4vf:
      - min_mtu = 81, max_mtu = 65535
      
      benet:
      - min_mtu = 256, max_mtu = 9000
      
      ibmveth:
      - min_mtu = 68, max_mtu = 65535
      
      ibmvnic:
      - min_mtu = adapter->min_mtu, max_mtu = adapter->max_mtu
      - remove now redundant ibmvnic_change_mtu
      
      jme:
      - min_mtu = 1280, max_mtu = 9202
      
      mv643xx_eth:
      - min_mtu = 64, max_mtu = 9500
      
      mlxsw:
      - min_mtu = 0, max_mtu = 65535
      - Basically bypassing the core checks, and instead relying on dynamic
        checks in the respective switch drivers' ndo_change_mtu functions
      
      ns83820:
      - min_mtu = 0
      - remove redundant ns83820_change_mtu, only checked for mtu > 1500
      
      netxen:
      - min_mtu = 0, max_mtu = 8000 (P2), max_mtu = 9600 (P3)
      
      qlge:
      - min_mtu = 1500, max_mtu = 9000
      - driver only supports setting mtu to 1500 or 9000, so the core check only
        rules out < 1500 and > 9000, qlge_change_mtu still needs to check that
        the value is 1500 or 9000
      
      qualcomm/emac:
      - min_mtu = 46, max_mtu = 9194
      
      xilinx_axienet:
      - min_mtu = 64, max_mtu = 9000
      
      Fixes: 61e84623 ("net: centralize net_device min/max MTU checking")
      CC: netdev@vger.kernel.org
      CC: Jes Sorensen <jes@trained-monkey.org>
      CC: Netanel Belgazal <netanel@annapurnalabs.com>
      CC: Tom Lendacky <thomas.lendacky@amd.com>
      CC: Santosh Raspatur <santosh@chelsio.com>
      CC: Hariprasad S <hariprasad@chelsio.com>
      CC: Sathya Perla <sathya.perla@broadcom.com>
      CC: Ajit Khaparde <ajit.khaparde@broadcom.com>
      CC: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
      CC: Somnath Kotur <somnath.kotur@broadcom.com>
      CC: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
      CC: John Allen <jallen@linux.vnet.ibm.com>
      CC: Guo-Fu Tseng <cooldavid@cooldavid.org>
      CC: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
      CC: Jiri Pirko <jiri@mellanox.com>
      CC: Ido Schimmel <idosch@mellanox.com>
      CC: Manish Chopra <manish.chopra@qlogic.com>
      CC: Sony Chacko <sony.chacko@qlogic.com>
      CC: Rajesh Borundia <rajesh.borundia@qlogic.com>
      CC: Timur Tabi <timur@codeaurora.org>
      CC: Anirudha Sarangi <anirudh@xilinx.com>
      CC: John Linn <John.Linn@xilinx.com>
      Signed-off-by: NJarod Wilson <jarod@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      d894be57
  15. 02 8月, 2016 1 次提交
  16. 25 5月, 2016 1 次提交
    • G
      net/qlge: Avoids recursive EEH error · 3275c0c6
      Gavin Shan 提交于
      One timer, whose handler keeps reading on MMIO register for EEH
      core to detect error in time, is started when the PCI device driver
      is loaded. MMIO register can't be accessed during PE reset in EEH
      recovery. Otherwise, the unexpected recursive error is triggered.
      The timer isn't closed that time if the interface isn't brought
      up. So the unexpected recursive error is seen during EEH recovery
      when the interface is down.
      
      This avoids the unexpected recursive EEH error by closing the timer
      in qlge_io_error_detected() before EEH PE reset unconditionally. The
      timer is started unconditionally after EEH PE reset in qlge_io_resume().
      Also, the timer should be closed unconditionally when the device is
      removed from the system permanently in qlge_io_error_detected().
      Reported-by: NShriya R. Kulkarni <shriyakul@in.ibm.com>
      Signed-off-by: NGavin Shan <gwshan@linux.vnet.ibm.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      3275c0c6
  17. 16 4月, 2016 1 次提交
  18. 25 3月, 2016 1 次提交
  19. 19 3月, 2016 1 次提交
  20. 16 12月, 2015 1 次提交
  21. 16 10月, 2015 1 次提交
  22. 22 5月, 2015 1 次提交
  23. 04 3月, 2015 1 次提交
  24. 03 2月, 2015 1 次提交
  25. 14 1月, 2015 1 次提交
  26. 23 9月, 2014 1 次提交
  27. 26 8月, 2014 1 次提交
    • V
      qlge: Fix TSO for non-accelerated vlan traffic · 1ee1cfe7
      Vlad Yasevich 提交于
      This device claims TSO support for vlans.  It also allows a user to
      control vlan acceleration offloading.  As such, it is possible to turn
      off vlan acceleration and configure a vlan which will continue to send
      TSO traffic.
      
      In such situation the packet passed down the the device will contain
      a vlan header and skb->protocol will be set to ETH_P_8021Q.
      The device assumes that skb->protocol contains network protocol
      value and uses that value to set up TSO information.
      This results in corrupted frames sent on the wire.
      
      This patch extracts the protocol value correctly by using a
      vlan_get_protocol() helper and corrects corrupt TSO frames.
      
      CC: Shahed Shaikh <shahed.shaikh@qlogic.com>
      CC: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
      CC: Ron Mercer <ron.mercer@qlogic.com>
      CC: linux-driver@qlogic.com
      Signed-off-by: NVladislav Yasevich <vyasevic@redhat.com>
      Acked-by: NShahed Shaikh <shahed.shaikh@qlogic.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      1ee1cfe7
  28. 13 8月, 2014 1 次提交
  29. 09 8月, 2014 1 次提交
  30. 14 5月, 2014 1 次提交
  31. 28 4月, 2014 1 次提交
  32. 30 3月, 2014 1 次提交
  33. 29 3月, 2014 1 次提交
  34. 19 2月, 2014 2 次提交
  35. 17 1月, 2014 1 次提交
  36. 15 1月, 2014 1 次提交
  37. 27 12月, 2013 1 次提交
  38. 06 12月, 2013 1 次提交