1. 15 3月, 2019 1 次提交
    • G
      net: kernel hookers service for toa module · 33576e37
      George Zhang 提交于
      LVS fullnat will replace network traffic's source ip with its local ip,
      and thus the backend servers cannot obtain the real client ip.
      
      To solve this, LVS has introduced the tcp option address (TOA) to store
      the essential ip address information in the last tcp ack packet of the
      3-way handshake, and the backend servers need to retrieve it from the
      packet header.
      
      In this patch, we have introduced the sk_toa_data member in the sock
      structure to hold the TOA information. There used to be an in-tree
      module for TOA managing, whereas it has now been maintained as an
      standalone module.
      
      In this case, the toa module should register its hook function(s) using
      the provided interfaces in the hookers module.
      
      TOA in sock structure:
      
      	__be32 sk_toa_data[16];
      
      The hookers module only provides the sk_toa_data placeholder, and the
      toa module can use this variable through the layout it needs.
      
      Hook interfaces:
      
      The hookers module replaces the kernel's syn_recv_sock and getname
      handler with a stub that chains the toa module's hook function(s) to the
      original handling function. The hookers module allows hook functions to
      be installed and uninstalled in any order.
      
      toa module:
      
      The external toa module will be provided in separate RPM package.
      
      [xuyu@linux.alibaba.com: amend commit log]
      Signed-off-by: NGeorge Zhang <georgezhang@linux.alibaba.com>
      Signed-off-by: NXu Yu <xuyu@linux.alibaba.com>
      Reviewed-by: NCaspar Zhang <caspar@linux.alibaba.com>
      33576e37
  2. 07 7月, 2018 1 次提交
  3. 09 6月, 2018 1 次提交
    • P
      udp: fix rx queue len reported by diag and proc interface · 6c206b20
      Paolo Abeni 提交于
      After commit 6b229cf7 ("udp: add batching to udp_rmem_release()")
      the sk_rmem_alloc field does not measure exactly anymore the
      receive queue length, because we batch the rmem release. The issue
      is really apparent only after commit 0d4a6608 ("udp: do rmem bulk
      free even if the rx sk queue is empty"): the user space can easily
      check for an empty socket with not-0 queue length reported by the 'ss'
      tool or the procfs interface.
      
      We need to use a custom UDP helper to report the correct queue length,
      taking into account the forward allocation deficit.
      
      Reported-by: trevor.francis@46labs.com
      Fixes: 6b229cf7 ("UDP: add batching to udp_rmem_release()")
      Signed-off-by: NPaolo Abeni <pabeni@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6c206b20
  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. 04 5月, 2016 1 次提交
    • W
      ipv6: add new struct ipcm6_cookie · 26879da5
      Wei Wang 提交于
      In the sendmsg function of UDP, raw, ICMP and l2tp sockets, we use local
      variables like hlimits, tclass, opt and dontfrag and pass them to corresponding
      functions like ip6_make_skb, ip6_append_data and xxx_push_pending_frames.
      This is not a good practice and makes it hard to add new parameters.
      This fix introduces a new struct ipcm6_cookie similar to ipcm_cookie in
      ipv4 and include the above mentioned variables. And we only pass the
      pointer to this structure to corresponding functions. This makes it easier
      to add new parameters in the future and makes the function cleaner.
      Signed-off-by: NWei Wang <weiwan@google.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      26879da5
  6. 05 4月, 2016 1 次提交
  7. 20 1月, 2014 1 次提交
    • H
      ipv6: make IPV6_RECVPKTINFO work for ipv4 datagrams · 4b261c75
      Hannes Frederic Sowa 提交于
      We currently don't report IPV6_RECVPKTINFO in cmsg access ancillary data
      for IPv4 datagrams on IPv6 sockets.
      
      This patch splits the ip6_datagram_recv_ctl into two functions, one
      which handles both protocol families, AF_INET and AF_INET6, while the
      ip6_datagram_recv_specific_ctl only handles IPv6 cmsg data.
      
      ip6_datagram_recv_*_ctl never reported back any errors, so we can make
      them return void. Also provide a helper for protocols which don't offer dual
      personality to further use ip6_datagram_recv_ctl, which is exported to
      modules.
      
      I needed to shuffle the code for ping around a bit to make it easier to
      implement dual personality for ping ipv6 sockets in future.
      Reported-by: NGert Doering <gert@space.net>
      Signed-off-by: NHannes Frederic Sowa <hannes@stressinduktion.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      4b261c75
  8. 05 6月, 2013 3 次提交
  9. 26 5月, 2013 1 次提交
    • L
      net: ipv6: Add IPv6 support to the ping socket. · 6d0bfe22
      Lorenzo Colitti 提交于
      This adds the ability to send ICMPv6 echo requests without a
      raw socket. The equivalent ability for ICMPv4 was added in
      2011.
      
      Instead of having separate code paths for IPv4 and IPv6, make
      most of the code in net/ipv4/ping.c dual-stack and only add a
      few IPv6-specific bits (like the protocol definition) to a new
      net/ipv6/ping.c. Hopefully this will reduce divergence and/or
      duplication of bugs in the future.
      
      Caveats:
      
      - Setting options via ancillary data (e.g., using IPV6_PKTINFO
        to specify the outgoing interface) is not yet supported.
      - There are no separate security settings for IPv4 and IPv6;
        everything is controlled by /proc/net/ipv4/ping_group_range.
      - The proc interface does not yet display IPv6 ping sockets
        properly.
      
      Tested with a patched copy of ping6 and using raw socket calls.
      Compiles and works with all of CONFIG_IPV6={n,m,y}.
      Signed-off-by: NLorenzo Colitti <lorenzo@google.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6d0bfe22
  10. 01 2月, 2013 1 次提交
  11. 31 8月, 2011 1 次提交
  12. 25 4月, 2011 1 次提交
  13. 31 3月, 2011 1 次提交
  14. 13 3月, 2011 1 次提交
  15. 24 4月, 2010 1 次提交
  16. 02 9月, 2009 1 次提交
  17. 15 2月, 2009 1 次提交
  18. 15 6月, 2008 1 次提交
  19. 05 6月, 2008 1 次提交
  20. 07 3月, 2008 1 次提交
    • D
      [UDP]: Revert udplite and code split. · db8dac20
      David S. Miller 提交于
      This reverts commit db1ed684 ("[IPV6]
      UDP: Rename IPv6 UDP files."), commit
      8be8af8f ("[IPV4] UDP: Move
      IPv4-specific bits to other file.") and commit
      e898d4db ("[UDP]: Allow users to
      configure UDP-Lite.").
      
      First, udplite is of such small cost, and it is a core protocol just
      like TCP and normal UDP are.
      
      We spent enormous amounts of effort to make udplite share as much code
      with core UDP as possible.  All of that work is less valuable if we're
      just going to slap a config option on udplite support.
      
      It is also causing build failures, as reported on linux-next, showing
      that the changeset was not tested very well.  In fact, this is the
      second build failure resulting from the udplite change.
      
      Finally, the config options provided was a bool, instead of a modular
      option.  Meaning the udplite code does not even get build tested
      by allmodconfig builds, and furthermore the user is not presented
      with a reasonable modular build option which is particularly needed
      by distribution vendors.
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      db8dac20
  21. 04 3月, 2008 1 次提交
    • Y
      [UDP]: Allow users to configure UDP-Lite. · e898d4db
      YOSHIFUJI Hideaki 提交于
      Let's give users an option for disabling UDP-Lite (~4K).
      
      old:
      |    text	   data	    bss	    dec	    hex	filename
      |  286498	  12432	   6072	 305002	  4a76a	net/ipv4/built-in.o
      |  193830	   8192	   3204	 205226	  321aa	net/ipv6/ipv6.o
      
      new (without UDP-Lite):
      |    text	   data	    bss	    dec	    hex	filename
      |  284086	  12136	   5432	 301654	  49a56	net/ipv4/built-in.o
      |  191835	   7832	   3076	 202743	  317f7	net/ipv6/ipv6.o
      Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
      e898d4db
  22. 29 1月, 2008 3 次提交
  23. 03 12月, 2006 1 次提交
    • G
      [NET]: Supporting UDP-Lite (RFC 3828) in Linux · ba4e58ec
      Gerrit Renker 提交于
      This is a revision of the previously submitted patch, which alters
      the way files are organized and compiled in the following manner:
      
      	* UDP and UDP-Lite now use separate object files
      	* source file dependencies resolved via header files
      	  net/ipv{4,6}/udp_impl.h
      	* order of inclusion files in udp.c/udplite.c adapted
      	  accordingly
      
      [NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828)
      
      This patch adds support for UDP-Lite to the IPv4 stack, provided as an
      extension to the existing UDPv4 code:
              * generic routines are all located in net/ipv4/udp.c
              * UDP-Lite specific routines are in net/ipv4/udplite.c
              * MIB/statistics support in /proc/net/snmp and /proc/net/udplite
              * shared API with extensions for partial checksum coverage
      
      [NET/IPv6]: Extension for UDP-Lite over IPv6
      
      It extends the existing UDPv6 code base with support for UDP-Lite
      in the same manner as per UDPv4. In particular,
              * UDPv6 generic and shared code is in net/ipv6/udp.c
              * UDP-Litev6 specific extensions are in net/ipv6/udplite.c
              * MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6
              * support for IPV6_ADDRFORM
              * aligned the coding style of protocol initialisation with af_inet6.c
              * made the error handling in udpv6_queue_rcv_skb consistent;
                to return `-1' on error on all error cases
              * consolidation of shared code
      
      [NET]: UDP-Lite Documentation and basic XFRM/Netfilter support
      
      The UDP-Lite patch further provides
              * API documentation for UDP-Lite
              * basic xfrm support
              * basic netfilter support for IPv4 and IPv6 (LOG target)
      Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ba4e58ec
  24. 04 1月, 2006 1 次提交
  25. 08 9月, 2005 1 次提交
  26. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds 提交于
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4