[Bug 1001873] New: Patches to upgrade lwip to 1.4.1

[Bug 1001873] New: Patches to upgrade lwip to 1.4.1

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            Bug ID: 1001873
           Summary: Patches to upgrade lwip to 1.4.1
           Product: eCos
           Version: CVS
            Target: All
  Architecture/Host All
                OS:
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: low
         Component: lwIP
          Assignee: unassigned@bugs.ecos.sourceware.org
          Reporter: willw@carallon.com
                CC: ecos-bugs@ecos.sourceware.org

Created attachment 2277
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2277&action=edit
[PATCH 1/9] * Removed LWIP 1.3.2 in preparation for adding 1.4.1

This patch series updates LWIP to 1.4.1. It seems to work well for us, but we
have not run all the tests or touched anything like all the different config
possibilities. Please test and give feedback.

This patch series is generated from git (whatever happened to moving away from
cvs?), hopefully people won't have a problem with that. If you want build
bisectability then the first 5 patches should actually be merged into one. They
are presented separately here so people can see our working when updating lwip.
We have not added cdl options for absolutely every new option in lwip, just the
ones we felt were needed.

Summary of the patches:

 * Patches 1-5 update the lwip version
 * Patch 6 improves the cdl menu slightly
 * Patches 7 & 8 tidy up the code
 * Patch 9 fixes a bug in lwip (It was present in earlier version of lwip as
well) 

.../enc424j600/current/tests/netconn_test_server.c |    7 +-
 packages/net/lwip_tcpip/current/cdl/lwip_net.cdl   |  544 +++----
 packages/net/lwip_tcpip/current/doc/rawapi.txt     |   71 +-
 packages/net/lwip_tcpip/current/doc/snmp_agent.txt |    4 +-
 packages/net/lwip_tcpip/current/doc/sys_arch.txt   |   89 +-
 packages/net/lwip_tcpip/current/include/arch/cc.h  |    8 +
 .../net/lwip_tcpip/current/include/arch/sys_arch.h |   21 +-
 packages/net/lwip_tcpip/current/include/lwip.h     |    6 +-
 packages/net/lwip_tcpip/current/include/lwip/api.h |  173 ++-
 .../net/lwip_tcpip/current/include/lwip/api_msg.h  |   29 +-
 .../net/lwip_tcpip/current/include/lwip/arch.h     |  276 ++--
 .../net/lwip_tcpip/current/include/lwip/autoip.h   |    8 +-
 .../net/lwip_tcpip/current/include/lwip/debug.h    |    1 +
 packages/net/lwip_tcpip/current/include/lwip/def.h |   78 +-
 .../net/lwip_tcpip/current/include/lwip/dhcp.h     |  156 +-
 packages/net/lwip_tcpip/current/include/lwip/dns.h |   51 +-
 packages/net/lwip_tcpip/current/include/lwip/err.h |   28 +-
 .../net/lwip_tcpip/current/include/lwip/icmp.h     |   28 +-
 .../net/lwip_tcpip/current/include/lwip/igmp.h     |  100 +-
 .../net/lwip_tcpip/current/include/lwip/inet.h     |  108 +-
 .../lwip_tcpip/current/include/lwip/inet_chksum.h  |   38 +-
 .../net/lwip_tcpip/current/include/lwip/init.h     |    4 +-
 packages/net/lwip_tcpip/current/include/lwip/ip.h  |   97 +-
 .../net/lwip_tcpip/current/include/lwip/ip_addr.h  |  191 ++-
 .../net/lwip_tcpip/current/include/lwip/ip_frag.h  |   14 +-
 packages/net/lwip_tcpip/current/include/lwip/mem.h |   36 +-
 .../net/lwip_tcpip/current/include/lwip/memp_std.h |   30 +-
 .../net/lwip_tcpip/current/include/lwip/netbuf.h   |   33 +-
 .../net/lwip_tcpip/current/include/lwip/netdb.h    |   13 +
 .../net/lwip_tcpip/current/include/lwip/netif.h    |  187 ++-
 .../net/lwip_tcpip/current/include/lwip/netifapi.h |   37 +-
 packages/net/lwip_tcpip/current/include/lwip/opt.h |  363 ++++-
 .../net/lwip_tcpip/current/include/lwip/pbuf.h     |   72 +-
 packages/net/lwip_tcpip/current/include/lwip/raw.h |   47 +-
 .../net/lwip_tcpip/current/include/lwip/snmp.h     |   11 +-
 .../lwip_tcpip/current/include/lwip/snmp_asn1.h    |   16 +-
 .../net/lwip_tcpip/current/include/lwip/snmp_msg.h |   10 +-
 .../lwip_tcpip/current/include/lwip/snmp_structs.h |   38 +-
 .../net/lwip_tcpip/current/include/lwip/sockets.h  |   34 +-
 .../net/lwip_tcpip/current/include/lwip/stats.h    |   55 +-
 packages/net/lwip_tcpip/current/include/lwip/sys.h |  212 ++-
 packages/net/lwip_tcpip/current/include/lwip/tcp.h |  640 ++------
 .../net/lwip_tcpip/current/include/lwip/tcp_impl.h |  486 +++++++
 .../net/lwip_tcpip/current/include/lwip/tcpip.h    |   48 +-
 .../net/lwip_tcpip/current/include/lwip/timers.h   |  100 ++
 packages/net/lwip_tcpip/current/include/lwip/udp.h |   96 +-
 packages/net/lwip_tcpip/current/include/lwipopts.h |   14 +
 .../net/lwip_tcpip/current/include/netif/etharp.h  |   82 +-
 .../net/lwip_tcpip/current/include/netif/loopif.h  |   53 -
 .../lwip_tcpip/current/include/netif/ppp/chat.h    |  115 --
 .../net/lwip_tcpip/current/include/netif/ppp/ppp.h |  470 ------
 .../net/lwip_tcpip/current/include/netif/ppp_oe.h  |  101 +-
 .../net/lwip_tcpip/current/include/netif/slipif.h  |   30 +
 .../net/lwip_tcpip/current/include/posix/netdb.h   |   33 +
 .../lwip_tcpip/current/include/posix/sys/socket.h  |   33 +
 packages/net/lwip_tcpip/current/src/api/api_lib.c  |  518 +++++--
 packages/net/lwip_tcpip/current/src/api/api_msg.c  |  994 ++++++++-----
 packages/net/lwip_tcpip/current/src/api/err.c      |   23 +-
 packages/net/lwip_tcpip/current/src/api/netbuf.c   |   13 +-
 packages/net/lwip_tcpip/current/src/api/netdb.c    |   53 +-
 packages/net/lwip_tcpip/current/src/api/netifapi.c |   32 +-
 packages/net/lwip_tcpip/current/src/api/sockets.c  | 1175 ++++++++++-----
 packages/net/lwip_tcpip/current/src/api/tcpip.c    |  395 ++---
 packages/net/lwip_tcpip/current/src/core/def.c     |  108 ++
 packages/net/lwip_tcpip/current/src/core/dhcp.c    | 1012 +++++++------
 packages/net/lwip_tcpip/current/src/core/dns.c     |  228 ++-
 packages/net/lwip_tcpip/current/src/core/init.c    |  170 ++-
 .../net/lwip_tcpip/current/src/core/ipv4/autoip.c  |  117 +-
 .../net/lwip_tcpip/current/src/core/ipv4/icmp.c    |   42 +-
 .../net/lwip_tcpip/current/src/core/ipv4/igmp.c    |  210 +--
 .../net/lwip_tcpip/current/src/core/ipv4/inet.c    |  236 ---
 .../lwip_tcpip/current/src/core/ipv4/inet_chksum.c |   84 +-
 packages/net/lwip_tcpip/current/src/core/ipv4/ip.c |  367 +++--
 .../net/lwip_tcpip/current/src/core/ipv4/ip_addr.c |  262 +++-
 .../net/lwip_tcpip/current/src/core/ipv4/ip_frag.c |  115 +-
 packages/net/lwip_tcpip/current/src/core/mem.c     |  140 +-
 packages/net/lwip_tcpip/current/src/core/memp.c    |  138 +-
 packages/net/lwip_tcpip/current/src/core/netif.c   |  335 +++--
 packages/net/lwip_tcpip/current/src/core/pbuf.c    |  360 ++++-
 packages/net/lwip_tcpip/current/src/core/raw.c     |   49 +-
 .../lwip_tcpip/current/src/core/snmp/asn1_dec.c    |   32 +-
 .../lwip_tcpip/current/src/core/snmp/asn1_enc.c    |   56 +-
 .../net/lwip_tcpip/current/src/core/snmp/mib2.c    |  610 ++++----
 .../lwip_tcpip/current/src/core/snmp/mib_structs.c |   47 +-
 .../net/lwip_tcpip/current/src/core/snmp/msg_in.c  |  295 ++--
 .../net/lwip_tcpip/current/src/core/snmp/msg_out.c |   53 +-
 packages/net/lwip_tcpip/current/src/core/stats.c   |   59 +-
 packages/net/lwip_tcpip/current/src/core/sys.c     |  308 +---
 packages/net/lwip_tcpip/current/src/core/tcp.c     |  727 +++++++---
 packages/net/lwip_tcpip/current/src/core/tcp_in.c  |  377 +++--
 packages/net/lwip_tcpip/current/src/core/tcp_out.c | 1108 +++++++++-----
 packages/net/lwip_tcpip/current/src/core/timers.c  |  487 +++++++
 packages/net/lwip_tcpip/current/src/core/udp.c     |  376 +++--
 packages/net/lwip_tcpip/current/src/ecos/ppp.c     |    2 +-
 .../net/lwip_tcpip/current/src/ecos/sequential.c   |   45 +-
 packages/net/lwip_tcpip/current/src/ecos/simple.c  |   43 +-
 packages/net/lwip_tcpip/current/src/ecos/sio.c     |   38 +-
 .../net/lwip_tcpip/current/src/ecos/sys_arch.c     |  271 +++-
 packages/net/lwip_tcpip/current/src/netif/etharp.c | 1029 +++++++------
 .../net/lwip_tcpip/current/src/netif/ethernetif.c  |    1 -
 packages/net/lwip_tcpip/current/src/netif/loopif.c |   66 -
 .../net/lwip_tcpip/current/src/netif/ppp/auth.c    |  955 ++++++++----
 .../net/lwip_tcpip/current/src/netif/ppp/auth.h    |    2 +-
 .../net/lwip_tcpip/current/src/netif/ppp/chap.c    |  499 +++----
 .../net/lwip_tcpip/current/src/netif/ppp/chap.h    |   82 +-
 .../net/lwip_tcpip/current/src/netif/ppp/chat.c    |  332 -----
 .../net/lwip_tcpip/current/src/netif/ppp/chpms.c   |  182 +--
 .../net/lwip_tcpip/current/src/netif/ppp/chpms.h   |    8 +-
 .../net/lwip_tcpip/current/src/netif/ppp/fsm.c     |  489 +++----
 .../net/lwip_tcpip/current/src/netif/ppp/fsm.h     |   90 +-
 .../net/lwip_tcpip/current/src/netif/ppp/ipcp.c    |  297 ++--
 .../net/lwip_tcpip/current/src/netif/ppp/ipcp.h    |   64 +-
 .../net/lwip_tcpip/current/src/netif/ppp/lcp.c     |  498 ++++---
 .../net/lwip_tcpip/current/src/netif/ppp/lcp.h     |   72 +-
 .../net/lwip_tcpip/current/src/netif/ppp/magic.c   |   16 +-
 .../net/lwip_tcpip/current/src/netif/ppp/magic.h   |   14 +-
 .../net/lwip_tcpip/current/src/netif/ppp/md5.c     |  110 +-
 .../net/lwip_tcpip/current/src/netif/ppp/md5.h     |   10 +-
 .../net/lwip_tcpip/current/src/netif/ppp/pap.c     |  258 ++--
 .../net/lwip_tcpip/current/src/netif/ppp/pap.h     |   55 +-
 .../net/lwip_tcpip/current/src/netif/ppp/ppp.c     | 1531 +++++++++-----------
 .../net/lwip_tcpip/current/src/netif/ppp/ppp.h     |  201 +++
 .../lwip_tcpip/current/src/netif/ppp/ppp_impl.h    |  363 +++++
 .../net/lwip_tcpip/current/src/netif/ppp/ppp_oe.c  |  349 ++---
 .../lwip_tcpip/current/src/netif/ppp/pppdebug.h    |   55 +-
 .../net/lwip_tcpip/current/src/netif/ppp/randm.c   |  131 +-
 .../net/lwip_tcpip/current/src/netif/ppp/randm.h   |   18 +-
 .../net/lwip_tcpip/current/src/netif/ppp/record.c  |  127 --
 .../net/lwip_tcpip/current/src/netif/ppp/record.h  |   50 -
 .../net/lwip_tcpip/current/src/netif/ppp/timesys.c |  155 --
 .../net/lwip_tcpip/current/src/netif/ppp/timesys.h |   87 --
 packages/net/lwip_tcpip/current/src/netif/ppp/vj.c |  270 ++--
 packages/net/lwip_tcpip/current/src/netif/ppp/vj.h |   27 +-
 .../lwip_tcpip/current/src/netif/ppp/vjbsdhdr.h    |   75 -
 packages/net/lwip_tcpip/current/src/netif/slipif.c |  395 +++--
 .../lwip_tcpip/current/tests/httpd_sequential.c    |    5 +-
 packages/net/lwip_tcpip/current/tests/tcpecho.c    |    6 +-
 packages/net/lwip_tcpip/current/tests/udpecho.c    |    2 +-
 138 files changed, 15401 insertions(+), 11310 deletions(-)
 create mode 100644 packages/net/lwip_tcpip/current/include/lwip/tcp_impl.h
 create mode 100644 packages/net/lwip_tcpip/current/include/lwip/timers.h
 delete mode 100644 packages/net/lwip_tcpip/current/include/netif/loopif.h
 delete mode 100644 packages/net/lwip_tcpip/current/include/netif/ppp/chat.h
 delete mode 100644 packages/net/lwip_tcpip/current/include/netif/ppp/ppp.h
 create mode 100644 packages/net/lwip_tcpip/current/include/posix/netdb.h
 create mode 100644 packages/net/lwip_tcpip/current/include/posix/sys/socket.h
 create mode 100644 packages/net/lwip_tcpip/current/src/core/def.c
 create mode 100644 packages/net/lwip_tcpip/current/src/core/timers.c
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/loopif.c
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/chat.c
 create mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/ppp.h
 create mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/ppp_impl.h
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/record.c
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/record.h
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/timesys.c
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/timesys.h
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/vjbsdhdr.h

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #1 from Will Wagner <willw@carallon.com> ---
Created attachment 2278
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2278&action=edit
[PATCH 2/9] * Add vanilla lwip 1.4.1 source

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #2 from Will Wagner <willw@carallon.com> ---
Created attachment 2279
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2279&action=edit
[PATCH 3/9] * Restructure vanilla lwip headers to ecos way

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #4 from Will Wagner <willw@carallon.com> ---
Created attachment 2281
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2281&action=edit
[PATCH 5/9] * Make changes to ecos wrapper code for lwip

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #6 from Will Wagner <willw@carallon.com> ---
Created attachment 2283
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2283&action=edit
[PATCH 7/9] * Rationalise whitespace in ecos lwip files

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #5 from Will Wagner <willw@carallon.com> ---
Created attachment 2282
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2282&action=edit
[PATCH 6/9] * Improve lwip cdl options

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #3 from Will Wagner <willw@carallon.com> ---
Created attachment 2280
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2280&action=edit
[PATCH 4/9] * Apply previous ecos modifications to lwip

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #7 from Will Wagner <willw@carallon.com> ---
Created attachment 2284
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2284&action=edit
[PATCH 8/9] * Fix LWIP compiler warnings

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #8 from Will Wagner <willw@carallon.com> ---
Created attachment 2285
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2285&action=edit
[PATCH 9/9] * Ensure udp stats counter correct when dropped packets

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Ilija Kocho <ilijak@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ilijak@siva.com.mk

--- Comment #9 from Ilija Kocho <ilijak@siva.com.mk> ---
Hi Will

Thank you for the contribution. I am trying to apply the patches with patch
utility but there are some problems.

   1. text format: It seem patch utility is not happy with lines containig "\
No newline at end of file".

   2. Once I overcame that I got stuck with patch 0005. It doesn't seem to fit
cdl/lwip_net.cdl

Please check the patches against current CVS / patch utility.

Ilija

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #10 from Will Wagner <willw@carallon.com> ---
(In reply to comment #9)
> Hi Will
> 
> Thank you for the contribution. I am trying to apply the patches with patch
> utility but there are some problems.
> 
>    1. text format: It seem patch utility is not happy with lines containig
> "\ No newline at end of file".
> 
>    2. Once I overcame that I got stuck with patch 0005. It doesn't seem to
> fit cdl/lwip_net.cdl
> 
> Please check the patches against current CVS / patch utility.
> 
> Ilija

I was using a slightly old version of the eCosPro hg repository. The first
patch doesn't apply against head because of jld's commit 8 days ago to snmp in
lwip. I have respun my patches bases upon current head of the hg repository,
but only the first patch changes. I realise I was removing the from/date info
from the patches before, perhaps this was causing your issue.

I am able to apply all patches to CVS head using "patch -p < filename"

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2277|0                           |1
        is obsolete|                            |

--- Comment #11 from Will Wagner <willw@carallon.com> ---
Created attachment 2301
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2301&action=edit
[PATCH 1/9] * Removed LWIP 1.3.2 in preparation for adding 1.4.1

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2280|0                           |1
        is obsolete|                            |

--- Comment #14 from Will Wagner <willw@carallon.com> ---
Created attachment 2304
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2304&action=edit
[PATCH 4/9] * Apply previous ecos modifications to lwip

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2278|0                           |1
        is obsolete|                            |

--- Comment #12 from Will Wagner <willw@carallon.com> ---
Created attachment 2302
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2302&action=edit
[PATCH 2/9] * Add vanilla lwip 1.4.1 source

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2281|0                           |1
        is obsolete|                            |

--- Comment #15 from Will Wagner <willw@carallon.com> ---
Created attachment 2305
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2305&action=edit
[PATCH 5/9] * Make changes to ecos wrapper code for lwip

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2279|0                           |1
        is obsolete|                            |

--- Comment #13 from Will Wagner <willw@carallon.com> ---
Created attachment 2303
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2303&action=edit
[PATCH 3/9] * Restructure vanilla lwip headers to ecos way

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2284|0                           |1
        is obsolete|                            |

--- Comment #18 from Will Wagner <willw@carallon.com> ---
Created attachment 2308
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2308&action=edit
[PATCH 8/9] * Fix LWIP compiler warnings

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2282|0                           |1
        is obsolete|                            |

--- Comment #16 from Will Wagner <willw@carallon.com> ---
Created attachment 2306
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2306&action=edit
[PATCH 6/9] * Improve lwip cdl options

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2283|0                           |1
        is obsolete|                            |

--- Comment #17 from Will Wagner <willw@carallon.com> ---
Created attachment 2307
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2307&action=edit
[PATCH 7/9] * Rationalise whitespace in ecos lwip files

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2285|0                           |1
        is obsolete|                            |

--- Comment #19 from Will Wagner <willw@carallon.com> ---
Created attachment 2309
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2309&action=edit
2285: [PATCH 9/9] * Ensure udp stats counter correct when dropped packets

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--- Comment #20 from Ilija Kocho <ilijak@siva.com.mk> ---
(In reply to comment #10)
> (In reply to comment #9)
> > Hi Will
> > 
> > Thank you for the contribution. I am trying to apply the patches with patch
> > utility but there are some problems.
> > 
> >    1. text format: It seem patch utility is not happy with lines containig
> > "\ No newline at end of file".
> > 
> >    2. Once I overcame that I got stuck with patch 0005. It doesn't seem to
> > fit cdl/lwip_net.cdl
> > 
> > Please check the patches against current CVS / patch utility.
> > 
> > Ilija
> 
> I was using a slightly old version of the eCosPro hg repository. The first
> patch doesn't apply against head because of jld's commit 8 days ago to snmp
> in lwip. I have respun my patches bases upon current head of the hg
> repository, but only the first patch changes. I realise I was removing the
> from/date info from the patches before, perhaps this was causing your issue.
> 
> I am able to apply all patches to CVS head using "patch -p < filename"

Now it fits. Thanks.
I'll play little bit with it and come back with comments.

Ilija

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John Dallaway <john@dallaway.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |john@dallaway.org.uk

--- Comment #21 from John Dallaway <john@dallaway.org.uk> ---
Will, the complete diff against existing eCos sources looks clean.

Can you let me know which significant lwIP features you have exercised using
this codebase? For example, which protocols, interfaces and APIs?

Also, have you been able to run the eCos tests for lwIP?

Finally, can you confirm that all the eCos patches (changes relative to
upstream lwIP 1.3.2) have been applied to lwIP 1.4.1? I appreciate that the
PPP-related patches will have been dropped in favour of the new lwIP
implementation.

Thanks

John Dallaway

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John Dallaway <john@dallaway.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEEDINFO
     Ever confirmed|0                           |1

--- Comment #22 from John Dallaway <john@dallaway.org.uk> ---
Will, given the number of changes to the eCos-specific wrapper code in this
contribution, I must ask you and any other authors to each make a copyright
assignment to the Free Software Foundation. Rationale for copyright assignment:

  http://ecos.sourceware.org/contrib.html

Assignment procedure details:

  http://ecos.sourceware.org/assign.html

For avoidance of doubt, you should not list files in your assignment which have
been changed or introduced only as a result of the lwIP 1.4.1 import from
upstream since these changes have not been authored by yourselves.

Thanks

John Dallaway

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--- Comment #24 from Will Wagner <willw@carallon.com> ---
(In reply to comment #22)
> Will, given the number of changes to the eCos-specific wrapper code in this
> contribution, I must ask you and any other authors to each make a copyright
> assignment to the Free Software Foundation. Rationale for copyright
> assignment:
> 
>   http://ecos.sourceware.org/contrib.html
> 
> Assignment procedure details:
> 
>   http://ecos.sourceware.org/assign.html
> 
> For avoidance of doubt, you should not list files in your assignment which
> have been changed or introduced only as a result of the lwIP 1.4.1 import
> from upstream since these changes have not been authored by yourselves.
> 
> Thanks
> 
> John Dallaway

Have started this process.

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |MODIFIED

--- Comment #23 from Will Wagner <willw@carallon.com> ---
(In reply to comment #21)
> Will, the complete diff against existing eCos sources looks clean.
> 
> Can you let me know which significant lwIP features you have exercised using
> this codebase? For example, which protocols, interfaces and APIs?

In our code we have only really used the sequential mode. Have used ARP, ICMP,
IGMP, UDP, TCP using netconn and sockets API. Have also only been testing on
devices with a single network interface.

> 
> Also, have you been able to run the eCos tests for lwIP?

We have had httpd_sequential and httpd_simple both working fine. We'll take a
look at running more of the tests.

> 
> Finally, can you confirm that all the eCos patches (changes relative to
> upstream lwIP 1.3.2) have been applied to lwIP 1.4.1? I appreciate that the
> PPP-related patches will have been dropped in favour of the new lwIP
> implementation.

Yes I believe so. Most of the eCos patches for lwip since the move to lwIP
1.3.2 have been in the eCos wrapper not the actual lwIP code. We have left the
wrapper untouched except where needed. Patch 4 contains all the previous
modifications to lwIP code and is just reapplying part of the commit
"cdl/lwip_net.cdl: New CDL option CYGSEM_LWIP_MEM_SECTION."

The two other commits to lwIP code were "Fix compiler warning about unused
variables. [Bugzilla 1001521]" and "src/core/snmp/msg_out.c: Applied lwip
bugfix #29256." both of which are dealt with now in the upstream lwIP 1.4.1
code

> 
> Thanks
> 
> John Dallaway

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |MODIFIED

--- Comment #27 from Will Wagner <willw@carallon.com> ---
Hi Ilija,

We actually did some work on this at the end of last year, but then it got lost
in amongst other things.

(In reply to comment #25)
> 
> 1. Compilation of tests breaks on compiling the PPP test. The following
> lwip_net.cdl hack makes it compile:
> 
>          calculated      { "tests/httpd_sequential tests/httpd_simple " .
> -                          "tests/nc_test_slave tests/ppp " .
> +                          "tests/nc_test_slave " .
>                            "tests/socket tests/sys_timeout tests/tcpecho " .
>                            "tests/udpecho" }
> 
> This is, however, a workaround rather than fix. The PPP test program should
> be either fixed (synchronised with PPP upgrade) or, if obsolete, removed
> completely.

We have a patch I'll attach shortly that removes the test. Neither of us who
have worked on this are in any way ppp experts, however we felt it was just not
possible to port the test to the new version of lwip so we have removed it.

> 
> 2. There are still some compiler warnings ( GCC 4.6.3 - eCos GNU Tools
> 4.6.3-20120623 )

We see no warnings (CodeConfidence tools GCC 4.3.2). If you give details we can
try to take a look at them.

> 
> 3. There's no ChangeLog record.

Will attach patch shortly

> 
> 4. Copyright banners of eCos specific files that you have touched should be
> updated.

Will attach patch shortly

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2305|0                           |1
        is obsolete|                            |

--- Comment #28 from Will Wagner <willw@carallon.com> ---
Created attachment 2463
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2463&action=edit
[PATCH 05/13] * Make changes to ecos wrapper code for lwip

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2306|0                           |1
        is obsolete|                            |

--- Comment #29 from Will Wagner <willw@carallon.com> ---
Created attachment 2464
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2464&action=edit
[PATCH 06/13] * Improve lwip cdl options

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2309|0                           |1
        is obsolete|                            |

--- Comment #32 from Will Wagner <willw@carallon.com> ---
Created attachment 2467
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2467&action=edit
[PATCH 09/13] * Ensure udp stats counter correct when dropped packets

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2307|0                           |1
        is obsolete|                            |

--- Comment #30 from Will Wagner <willw@carallon.com> ---
Created attachment 2465
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2465&action=edit
[PATCH 07/13] * Rationalise whitespace in ecos lwip files

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2308|0                           |1
        is obsolete|                            |

--- Comment #31 from Will Wagner <willw@carallon.com> ---
Created attachment 2466
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2466&action=edit
[PATCH 08/13] * Fix LWIP compiler warnings

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--- Comment #34 from Will Wagner <willw@carallon.com> ---
Created attachment 2469
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2469&action=edit
[PATCH 11/13] * Fixed a lwip 1.4.1 compile bug.

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--- Comment #33 from Will Wagner <willw@carallon.com> ---
Created attachment 2468
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2468&action=edit
[PATCH 10/13] * Added CHAT support back in for lwip.

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--- Comment #35 from Will Wagner <willw@carallon.com> ---
Created attachment 2470
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2470&action=edit
[PATCH 12/13] * Added changelog entry for LWIP 1.4.1 update.

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--- Comment #37 from Will Wagner <willw@carallon.com> ---
Created attachment 2472
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2472&action=edit
[PATCH 13/13] * Updated lwip copyright headers of edited files.

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2470|0                           |1
        is obsolete|                            |

--- Comment #36 from Will Wagner <willw@carallon.com> ---
Created attachment 2471
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2471&action=edit
[PATCH 12/13] * Added changelog entry for LWIP 1.4.1 update.

Remove unwanted whitespace changes

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |MODIFIED

--- Comment #39 from Will Wagner <willw@carallon.com> ---
(In reply to comment #38)
> (In reply to comment #27)
> 
> Will
> 
> Thank you for the update. I apologize for delay, but I am very busy. I hope
> to have more time next week or a week after...
> 
> In meantime just to remind you about the copyright assignment. Have you send
> it? If yes, do you have a reply from FSF?

Yes, this is complete, we have had a reply from FSF.

> 
> 
> > Hi Ilija,
> > 
> > We actually did some work on this at the end of last year, but then it got
> > lost in amongst other things.
> > 
> 
> [snip]
> 
> > > 
> > > 2. There are still some compiler warnings ( GCC 4.6.3 - eCos GNU Tools
> > > 4.6.3-20120623 )
> > 
> > We see no warnings (CodeConfidence tools GCC 4.3.2). If you give details we
> > can try to take a look at them.
> > 
> 
> Usually newer versions introduce new warnings. At least it is case with
> 4.6.3 compared with 4.3.2. 
> 
> If you're working with ARM targets you may try eCos arm-eabi GNU tools -
> test release 4.6.3-20120623 ref:
> http://ecos.sourceware.org/ml/ecos-discuss/2012-06/msg00047.html

We'll give it a try when we get the chance.

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Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |NEEDINFO

--- Comment #40 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
(In reply to comment #39)
> (In reply to comment #38)
> > (In reply to comment #27)
> > 
> > Will
> > 
> > Thank you for the update. I apologize for delay, but I am very busy. I hope
> > to have more time next week or a week after...
> > 
> > In meantime just to remind you about the copyright assignment. Have you send
> > it? If yes, do you have a reply from FSF?
> 
> Yes, this is complete, we have had a reply from FSF.

Then we need to check with FSF.

Thanks

Ilija

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Subject: [Bug 1001873] Patches to upgrade lwip to 1.4.1
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Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |NEEDINFO

--- Comment #40 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
(In reply to comment #39)
> (In reply to comment #38)
> > (In reply to comment #27)
> > 
> > Will
> > 
> > Thank you for the update. I apologize for delay, but I am very busy. I hope
> > to have more time next week or a week after...
> > 
> > In meantime just to remind you about the copyright assignment. Have you send
> > it? If yes, do you have a reply from FSF?
> 
> Yes, this is complete, we have had a reply from FSF.

Then we need to check with FSF.

Thanks

Ilija

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Subject: [Bug 1001958] New: Increase measurement resolution for real-time
 characterisation tests.
Date: Thu, 13 Mar 2014 01:38:00 -0000
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            Bug ID: 1001958
           Summary: Increase measurement resolution for real-time
                    characterisation tests.
           Product: eCos
           Version: CVS
            Target: All
  Architecture/Host Other
                OS:
            Status: NEW
          Severity: enhancement
          Priority: low
         Component: Patches and contributions
          Assignee: unassigned@bugs.ecos.sourceware.org
          Reporter: ilijak@siva.com.mk
                CC: ecos-patches@ecos.sourceware.org

Created attachment 2481
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id$81&actioníit
tm_basic.cxx with ns resolution 140313

The submitted patch enables ns [nanosecond] resolution for real-time
characterisation, AKA tm_basic.cxx, for platforms providing
HAL_CLOCK_READ_NS(). (at present Cortex-M architecture).

For illustration, below I provide printouts from tm_basic.cxx with both
resolutions.

Ilija

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #41 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
Created attachment 2504
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2504&action=edit
Consolidated patches 1..13 140506

Will

Here I attach a consolidated patch that incorporates your patch set 1..13. It
is a convenience for people that would like to test. I won't obsolete your
patches since they clearly describe transformation from lwip 1.3 to 1.4.1.

I and my colleague Ilija Stanislevik have performed tests on Cortex-M
architecture (Kinetis K70). Ethernet and PPP have been tested against
nc_test_slave.c and both pass.

Now we're close to commit, however there are some compiler warnings and small
fixes that we are going to post so you (and hopefully somebody else) could test
and give us feedback.

Ilija.

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Subject: [Bug 1001873] Patches to upgrade lwip to 1.4.1
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--- Comment #41 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
Created attachment 2504
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2504&action=edit
Consolidated patches 1..13 140506

Will

Here I attach a consolidated patch that incorporates your patch set 1..13. It
is a convenience for people that would like to test. I won't obsolete your
patches since they clearly describe transformation from lwip 1.3 to 1.4.1.

I and my colleague Ilija Stanislevik have performed tests on Cortex-M
architecture (Kinetis K70). Ethernet and PPP have been tested against
nc_test_slave.c and both pass.

Now we're close to commit, however there are some compiler warnings and small
fixes that we are going to post so you (and hopefully somebody else) could test
and give us feedback.

Ilija.

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--- Comment #42 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
Created attachment 2505
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2505&action=edit
Fix some GCC warnings 140506.

This patch fixes some GCC warnings. The patch is incremental to attachment 2504
(or equivalent 13 piece patch set).

Ilija

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--- Comment #42 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
Created attachment 2505
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2505&action=edit
Fix some GCC warnings 140506.

This patch fixes some GCC warnings. The patch is incremental to attachment 2504
(or equivalent 13 piece patch set).

Ilija

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Subject: [Bug 1001873] Patches to upgrade lwip to 1.4.1
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Ilija Stanislevik <ilijas@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ilijas@siva.com.mk

--- Comment #43 from Ilija Stanislevik <ilijas@siva.com.mk> ---
(In reply to comment #41)
ppp.h resides in .../src/netif/ppp now, which makes ppp support inaccessible
from an application. I suggest moving ppp.h back to .../include/netif/ppp.

Actually, I did it for test and the package works with my ppp application.

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Oleg Uzenkov <o.uzenkov@unicore.co.ua> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |o.uzenkov@unicore.co.ua

--- Comment #44 from Oleg Uzenkov <o.uzenkov@unicore.co.ua> ---
Hi Guys,

First and foremost thank you very much for the patches provided here.

I have successfully upgraded lwip 1.3.2 to vanilla lwip 1.4.1 in ecos using
consolidated patch 1-13 kindly provided by Illija. BTW, I tested PPP on
stm32f4-discovery and it works (but for some reason less stable than ppp in
lwip 1.3.2, I can provide more info if requested).

There have been some major changes since vanilla lwip 1.4.1 commit in
particular ppp-new has been merged into master branch. Since the nature of my
project depends on lwip ppp implementation, I would like to use its most recent
version.

Please, suggest how to go about upgrading vanilla lwip 1.4.1 in ecos to the
most new version of lwip 1.4.1.

I would be grateful for any help on this.

Oleg

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--- Comment #45 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
(In reply to comment #44)

Hi Oleg

Thank you for your feedback.

> Hi Guys,
> 
> First and foremost thank you very much for the patches provided here.
> 
> I have successfully upgraded lwip 1.3.2 to vanilla lwip 1.4.1 in ecos using
> consolidated patch 1-13 kindly provided by Illija. BTW, I tested PPP on
> stm32f4-discovery and it works (but for some reason less stable than ppp in
> lwip 1.3.2, I can provide more info if requested).

I would appreciate if you do so.

> 
> There have been some major changes since vanilla lwip 1.4.1 commit in
> particular ppp-new has been merged into master branch. Since the nature of
> my project depends on lwip ppp implementation, I would like to use its most
> recent version.
> 

I assume it that by vanilla "lwip 1.4.1" you mean the lwIP 1.4.1 release, and
the other is current lwIP source (from GIT). Am I right?


> Please, suggest how to go about upgrading vanilla lwip 1.4.1 in ecos to the
> most new version of lwip 1.4.1.
> 

Assuming that my assumption above is right...

I would:

  1. download vanilla lwIP 1.4.1 master. (i.e. without eCos). ->
lwip-1.4.1-master
  2. download or check out current lwIP source (i.e. the source that I want to
upgrade to. -> lwip-current
  3. Diff 2. vs 1. Something like: diff -ruN lwip-1.4.1-master lwip-current
>lwip_upgrqade.diff

  4. Study lwip_upgrade.diff and try to apply changes to eCos' lwIP 1.4.1. With
little luck it may be possible to just patch it over eCos lwIP.

I hope this helps and I'd appreciate some feedback.

Ilija

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To: ecos-bugs@ecos.sourceware.org
Subject: [Bug 1001989] New: Cortex-M linker script template does not accept
 user selectable grouped libraries.
Date: Thu, 05 Jun 2014 22:36:00 -0000
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            Bug ID: 1001989
           Summary: Cortex-M linker script template does not accept user
                    selectable grouped libraries.
           Product: eCos
           Version: CVS
            Target: All
  Architecture/Host Cortex-M
                OS:
            Status: NEW
          Severity: enhancement
          Priority: low
         Component: HAL
          Assignee: unassigned@bugs.ecos.sourceware.org
          Reporter: ilijak@siva.com.mk
                CC: ecos-bugs@ecos.sourceware.org

Created attachment 2514
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id%14&actioníit
Fix Cortex-M linker script to accept user selectable grouped libraries.

eCos HAL macro CYGBLD_HAL_LINKER_GROUPED_LIBS provides for user selectable
grouped libraries.
In Cortex-M linker template cortexm.ld grouped libraries are hard coded. The
submitted attachment introduces the macro to linker script.

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #46 from Oleg Uzenkov <o.uzenkov@unicore.co.ua> ---
Hi Ilija,

Thanks for your advice. I will do what you suggested. If the upgrade is
successful I will upload it here. 

As to the work of PPP in the vanilla lwip 1.4.1, when trying to connect, quite
often I used to receive the following debug log:

++++++++++++++++++++++

[DEBUG] Initializing PPP
lcp_init: xmit_accm=0 0 0 0
upap_init: 0
pppOverSerialOpen: unit 0: Connecting
pppStart: unit 0
ppp_set_xaccm[0]: outACCM=0 0 0 0
ppp_send_config[0]: outACCM=FF FF FF FF
ppp_recv_config[0]: inACCM=0 0 0 0
lcp_lowerup: asyncmap=0 0 0 0
LCP: lowerup state 0 (LS_INITIAL) -> 2 (LS_CLOSED)
auth_reset: 0
lcp_addci: L opt=2 0
lcp_addci: L opt=5 2FF6F209
lcp_addci: opt=7
lcp_addci: opt=8
pppWrite[0]: len=46
fsm_sdata(LCP): Sent code 1,1,20.
LCP: sending Configure-Request, id 1
LCP: open state 2 (LS_CLOSED) -> 6 (LS_REQSENT)
pppStart: finished
LCP: timeout resending Config-Request state=6 (LS_REQSENT)
lcp_addci: L opt=2 0
lcp_addci: L opt=5 2FF6F209
lcp_addci: opt=7
lcp_addci: opt=8
pppWrite[0]: len=45
fsm_sdata(LCP): Sent code 1,1,20.
LCP: sending Configure-Request, id 1
LCP: timeout resending Config-Request state=6 (LS_REQSENT)
lcp_addci: L opt=2 0
lcp_addci: L opt=5 2FF6F209
lcp_addci: opt=7
lcp_addci: opt=8
pppWrite[0]: len=45
fsm_sdata(LCP): Sent code 1,1,20.
LCP: sending Configure-Request, id 1
LCP: timeout resending Config-Request state=6 (LS_REQSENT)
++++++++++++++++++++++++++++++

(This is just a snipet from the log.)
Apparently, it meant that I did not receive anything from GPRS modem through
the serial port. That happened quite often, however, successful connection did
happen also.

But when I started using GPRS VPN service from my cellular network provider
this problem has not shown up yet. I have tested it several times and there was
always  a successfull connection. So I believe now, the problem was related to
the quality of service and not to the PPP (1.4.1) implementation.

Oleg

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #48 from Oleg Uzenkov <o.uzenkov@unicore.co.ua> ---
Ilija,

(In reply to comment #47)
> Oleg
> 
> (In reply to comment #46)
> 
> Thank you for your report. I have some additional questions.
> 
> > Hi Ilija,
> > 
> 
> [SNIP]
> 
> > 
> > (This is just a snipet from the log.)
> > Apparently, it meant that I did not receive anything from GPRS modem through
> > the serial port. That happened quite often, however, successful connection
> > did happen also.
> 
> What was your serial line setting: baud rate, (hardware) handshaking ?

Serial settings: 9600, 8N1 (no hw/sw control)

> 
> > 
> > But when I started using GPRS VPN service from my cellular network provider
> > this problem has not shown up yet. I have tested it several times and there
> > was always  a successfull connection. So I believe now, the problem was
> > related to the quality of service and not to the PPP (1.4.1) implementation.
> 
> Can you try different locations?

I tired two providers. 

> 
> Ilija

Another problem came up:
Sometimes when ppp connection gets terminated (it can happen all of a sudden,
not sure why) and the stack is then trying to reconnect (i have a state machine
logic, see below), it cannot open serial port (pppOpen, pd is negative, see
below) again after it has been closed with pppClose. Please note, sometimes it
can reopen serial port, but not always. The lwip stack is in simple mode (i.e.
NO_SYS=1).

With 1.3.2 version of ppp I do not have these problems.

Here is the code snippet with the logic:
  void ppp_service::_thread_func (cyg_addrword_t p)
  {
    int err;
    cyg_uint32 len;
    cyg_uint32 cfg_data;
    int pd = -1;
    sio_fd_t sd;
    chat_t chat;

    int count;
    static const cyg_uint32 buf_length = 128;
    u8_t rxbuf[buf_length];

    ppp_service * srv = reinterpret_cast<ppp_service *> (p);

    /*configure serial port */
    err = cyg_io_lookup (SERIAL_PORT, &sd);
    LOG_ASSERT (err == ENOERR);
    LOG_ASSERT (sd != NULL);

    /* read port configuration */
    cyg_serial_info_t port_info;
    cyg_uint32 port_info_len = sizeof (port_info);
    err = cyg_io_get_config (sd,
              CYG_IO_GET_CONFIG_SERIAL_INFO,
              &port_info,
              &port_info_len);
    LOG_ASSERT (err == ENOERR);

    /* update port configuration */
    port_info_len = sizeof (port_info);

    port_info.baud = CYGNUM_SERIAL_BAUD_9600;
    port_info.stop = CYGNUM_SERIAL_STOP_1;
    port_info.parity = CYGNUM_SERIAL_PARITY_NONE;
    port_info.word_length = CYGNUM_SERIAL_WORD_LENGTH_8;

    err = cyg_io_set_config (sd,
              CYG_IO_SET_CONFIG_SERIAL_INFO,
              &port_info,
              &port_info_len);
    LOG_ASSERT (err == ENOERR);

    /**
     * configure cyg_io_read to be non-blocking
     * since blocking cannot be used in interrupts
     */
    cfg_data = 0;
    len = sizeof(cfg_data);
    err = cyg_io_set_config (sd, CYG_IO_SET_CONFIG_READ_BLOCKING, &cfg_data,
&len);
    LOG_ASSERT (err == ENOERR);


    while (1) {
      switch (srv->_init_state) {
        case CHAT_INIT:
          chat = chat_new(sd, chat_items, CHAT_TIMEOUT, srv->_chat_cb,
                          srv->_chat_send_cb, static_cast<void*>(srv));
          srv->_init_state = CHAT_RUN;
          break;
        case CHAT_RUN:
          chat_poll(chat);
          break;
        case CHAT_FINISH:
          chat_free(chat);
          chat = NULL;
          if (srv->_chat_ok) {
            srv->_init_state = PPP_INIT;
          } else {
            srv->_init_state = CHAT_INIT;
          }
          break;
        case PPP_INIT:          
          pppInit();          
          pd = pppOpen(sd, srv->_ppp_status_cb, static_cast<void*>(srv));
          if (pd < 0) {
            syslog (LOG_CRIT, "Cannot open PPP over serial\n");
          }
          pppSetAuth(PPPAUTHTYPE_ANY, PPP_USER, PPP_PASSWORD);          
          srv->_init_state = PPP_INIT_WAIT;
          break;
        case PPP_INIT_WAIT:
          sys_check_timeouts();
          count = sio_read(sd, (u8_t*)rxbuf, buf_length);
          if(count > 0) 
          {
            pppos_input(pd, rxbuf, count);
          }
          else
          {
            sys_msleep(1);
            //cyg_thread_delay(10);
          }
          srv->_init_state = PPP_UP;
          break;        
        case PPP_UP:
          sys_check_timeouts();
          count = sio_read(sd, (u8_t*)rxbuf, buf_length);
          if(count > 0) 
          {
            pppos_input(pd, rxbuf, count);
          }
          else
          {
            sys_msleep(1);
            //cyg_thread_delay(10);
          }
          break;
        case FINISH:
          pppClose(pd);
          /* free chat if reconnect happend whilst chat init */
          if (chat != NULL)
          {
            chat_free(chat);
          }
          srv->_init_state = FINISH_WAIT;
          break;
        case FINISH_WAIT:
          srv->_init_state = CHAT_INIT;
          cyg_thread_delay(20); //wait for x clks
          break;
      }
      cyg_thread_yield();
    }
  }

We do need to port ppp-new branch to ecos as judging from the author's comments
it is more stable than the ppp implementation in vanilla 1.4.1 ppp stack (link:
http://lists.gnu.org/archive/html/lwip-users/2014-03/msg00061.html)

Oleg

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001873

--- Comment #49 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
(In reply to comment #48)
> Ilija,
> 
> (In reply to comment #47)
> > Oleg
> > 
> > (In reply to comment #46)
> > 
> > Thank you for your report. I have some additional questions.
> > 
> > > Hi Ilija,
> > > 
> > 
> > [SNIP]
> > 
> > > 
> > > (This is just a snipet from the log.)
> > > Apparently, it meant that I did not receive anything from GPRS modem through
> > > the serial port. That happened quite often, however, successful connection
> > > did happen also.
> > 
> > What was your serial line setting: baud rate, (hardware) handshaking ?
> 
> Serial settings: 9600, 8N1 (no hw/sw control)

I recommend you to try HW control. In our company we had no problems with 9600
(Kinetis K70) but on higher baud rates there were problems. 
Also, below I learn that your lwIP is in simple mode that is different than our
configuration.

[SNIP] Note:I do not throw your example away, just little-bit redundancy
control.

> We do need to port ppp-new branch to ecos as judging from the author's
> comments it is more stable than the ppp implementation in vanilla 1.4.1 ppp
> stack (link:
> http://lists.gnu.org/archive/html/lwip-users/2014-03/msg00061.html)

Possibly.

FYI we are testing current lwIP 1.4.1 and it seems to work. We experienced
problems on higher baud rates.

Ilija

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Subject: [Bug 1001873] Patches to upgrade lwip to 1.4.1
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--- Comment #49 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
(In reply to comment #48)
> Ilija,
> 
> (In reply to comment #47)
> > Oleg
> > 
> > (In reply to comment #46)
> > 
> > Thank you for your report. I have some additional questions.
> > 
> > > Hi Ilija,
> > > 
> > 
> > [SNIP]
> > 
> > > 
> > > (This is just a snipet from the log.)
> > > Apparently, it meant that I did not receive anything from GPRS modem through
> > > the serial port. That happened quite often, however, successful connection
> > > did happen also.
> > 
> > What was your serial line setting: baud rate, (hardware) handshaking ?
> 
> Serial settings: 9600, 8N1 (no hw/sw control)

I recommend you to try HW control. In our company we had no problems with 9600
(Kinetis K70) but on higher baud rates there were problems. 
Also, below I learn that your lwIP is in simple mode that is different than our
configuration.

[SNIP] Note:I do not throw your example away, just little-bit redundancy
control.

> We do need to port ppp-new branch to ecos as judging from the author's
> comments it is more stable than the ppp implementation in vanilla 1.4.1 ppp
> stack (link:
> http://lists.gnu.org/archive/html/lwip-users/2014-03/msg00061.html)

Possibly.

FYI we are testing current lwIP 1.4.1 and it seems to work. We experienced
problems on higher baud rates.

Ilija

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Ross Younger <wry@ecoscentric.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |wry@ecoscentric.com

--- Comment #1 from Ross Younger <wry@ecoscentric.com> ---
Just tripped over this one myself on Ubuntu 12.04 with gcc 4.6.3. Sergei
provided a workaround on-list:
https://www.sourceware.org/ml/ecos-devel/2011-02/msg00002.html

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[Bug 1001873] New: Patches to upgrade lwip to 1.4.1

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            Bug ID: 1001873
           Summary: Patches to upgrade lwip to 1.4.1
           Product: eCos
           Version: CVS
            Target: All
  Architecture/Host All
                OS:
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: low
         Component: lwIP
          Assignee: unassigned@bugs.ecos.sourceware.org
          Reporter: willw@carallon.com
                CC: ecos-bugs@ecos.sourceware.org

Created attachment 2277
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2277&action=edit
[PATCH 1/9] * Removed LWIP 1.3.2 in preparation for adding 1.4.1

This patch series updates LWIP to 1.4.1. It seems to work well for us, but we
have not run all the tests or touched anything like all the different config
possibilities. Please test and give feedback.

This patch series is generated from git (whatever happened to moving away from
cvs?), hopefully people won't have a problem with that. If you want build
bisectability then the first 5 patches should actually be merged into one. They
are presented separately here so people can see our working when updating lwip.
We have not added cdl options for absolutely every new option in lwip, just the
ones we felt were needed.

Summary of the patches:

 * Patches 1-5 update the lwip version
 * Patch 6 improves the cdl menu slightly
 * Patches 7 & 8 tidy up the code
 * Patch 9 fixes a bug in lwip (It was present in earlier version of lwip as
well) 

.../enc424j600/current/tests/netconn_test_server.c |    7 +-
 packages/net/lwip_tcpip/current/cdl/lwip_net.cdl   |  544 +++----
 packages/net/lwip_tcpip/current/doc/rawapi.txt     |   71 +-
 packages/net/lwip_tcpip/current/doc/snmp_agent.txt |    4 +-
 packages/net/lwip_tcpip/current/doc/sys_arch.txt   |   89 +-
 packages/net/lwip_tcpip/current/include/arch/cc.h  |    8 +
 .../net/lwip_tcpip/current/include/arch/sys_arch.h |   21 +-
 packages/net/lwip_tcpip/current/include/lwip.h     |    6 +-
 packages/net/lwip_tcpip/current/include/lwip/api.h |  173 ++-
 .../net/lwip_tcpip/current/include/lwip/api_msg.h  |   29 +-
 .../net/lwip_tcpip/current/include/lwip/arch.h     |  276 ++--
 .../net/lwip_tcpip/current/include/lwip/autoip.h   |    8 +-
 .../net/lwip_tcpip/current/include/lwip/debug.h    |    1 +
 packages/net/lwip_tcpip/current/include/lwip/def.h |   78 +-
 .../net/lwip_tcpip/current/include/lwip/dhcp.h     |  156 +-
 packages/net/lwip_tcpip/current/include/lwip/dns.h |   51 +-
 packages/net/lwip_tcpip/current/include/lwip/err.h |   28 +-
 .../net/lwip_tcpip/current/include/lwip/icmp.h     |   28 +-
 .../net/lwip_tcpip/current/include/lwip/igmp.h     |  100 +-
 .../net/lwip_tcpip/current/include/lwip/inet.h     |  108 +-
 .../lwip_tcpip/current/include/lwip/inet_chksum.h  |   38 +-
 .../net/lwip_tcpip/current/include/lwip/init.h     |    4 +-
 packages/net/lwip_tcpip/current/include/lwip/ip.h  |   97 +-
 .../net/lwip_tcpip/current/include/lwip/ip_addr.h  |  191 ++-
 .../net/lwip_tcpip/current/include/lwip/ip_frag.h  |   14 +-
 packages/net/lwip_tcpip/current/include/lwip/mem.h |   36 +-
 .../net/lwip_tcpip/current/include/lwip/memp_std.h |   30 +-
 .../net/lwip_tcpip/current/include/lwip/netbuf.h   |   33 +-
 .../net/lwip_tcpip/current/include/lwip/netdb.h    |   13 +
 .../net/lwip_tcpip/current/include/lwip/netif.h    |  187 ++-
 .../net/lwip_tcpip/current/include/lwip/netifapi.h |   37 +-
 packages/net/lwip_tcpip/current/include/lwip/opt.h |  363 ++++-
 .../net/lwip_tcpip/current/include/lwip/pbuf.h     |   72 +-
 packages/net/lwip_tcpip/current/include/lwip/raw.h |   47 +-
 .../net/lwip_tcpip/current/include/lwip/snmp.h     |   11 +-
 .../lwip_tcpip/current/include/lwip/snmp_asn1.h    |   16 +-
 .../net/lwip_tcpip/current/include/lwip/snmp_msg.h |   10 +-
 .../lwip_tcpip/current/include/lwip/snmp_structs.h |   38 +-
 .../net/lwip_tcpip/current/include/lwip/sockets.h  |   34 +-
 .../net/lwip_tcpip/current/include/lwip/stats.h    |   55 +-
 packages/net/lwip_tcpip/current/include/lwip/sys.h |  212 ++-
 packages/net/lwip_tcpip/current/include/lwip/tcp.h |  640 ++------
 .../net/lwip_tcpip/current/include/lwip/tcp_impl.h |  486 +++++++
 .../net/lwip_tcpip/current/include/lwip/tcpip.h    |   48 +-
 .../net/lwip_tcpip/current/include/lwip/timers.h   |  100 ++
 packages/net/lwip_tcpip/current/include/lwip/udp.h |   96 +-
 packages/net/lwip_tcpip/current/include/lwipopts.h |   14 +
 .../net/lwip_tcpip/current/include/netif/etharp.h  |   82 +-
 .../net/lwip_tcpip/current/include/netif/loopif.h  |   53 -
 .../lwip_tcpip/current/include/netif/ppp/chat.h    |  115 --
 .../net/lwip_tcpip/current/include/netif/ppp/ppp.h |  470 ------
 .../net/lwip_tcpip/current/include/netif/ppp_oe.h  |  101 +-
 .../net/lwip_tcpip/current/include/netif/slipif.h  |   30 +
 .../net/lwip_tcpip/current/include/posix/netdb.h   |   33 +
 .../lwip_tcpip/current/include/posix/sys/socket.h  |   33 +
 packages/net/lwip_tcpip/current/src/api/api_lib.c  |  518 +++++--
 packages/net/lwip_tcpip/current/src/api/api_msg.c  |  994 ++++++++-----
 packages/net/lwip_tcpip/current/src/api/err.c      |   23 +-
 packages/net/lwip_tcpip/current/src/api/netbuf.c   |   13 +-
 packages/net/lwip_tcpip/current/src/api/netdb.c    |   53 +-
 packages/net/lwip_tcpip/current/src/api/netifapi.c |   32 +-
 packages/net/lwip_tcpip/current/src/api/sockets.c  | 1175 ++++++++++-----
 packages/net/lwip_tcpip/current/src/api/tcpip.c    |  395 ++---
 packages/net/lwip_tcpip/current/src/core/def.c     |  108 ++
 packages/net/lwip_tcpip/current/src/core/dhcp.c    | 1012 +++++++------
 packages/net/lwip_tcpip/current/src/core/dns.c     |  228 ++-
 packages/net/lwip_tcpip/current/src/core/init.c    |  170 ++-
 .../net/lwip_tcpip/current/src/core/ipv4/autoip.c  |  117 +-
 .../net/lwip_tcpip/current/src/core/ipv4/icmp.c    |   42 +-
 .../net/lwip_tcpip/current/src/core/ipv4/igmp.c    |  210 +--
 .../net/lwip_tcpip/current/src/core/ipv4/inet.c    |  236 ---
 .../lwip_tcpip/current/src/core/ipv4/inet_chksum.c |   84 +-
 packages/net/lwip_tcpip/current/src/core/ipv4/ip.c |  367 +++--
 .../net/lwip_tcpip/current/src/core/ipv4/ip_addr.c |  262 +++-
 .../net/lwip_tcpip/current/src/core/ipv4/ip_frag.c |  115 +-
 packages/net/lwip_tcpip/current/src/core/mem.c     |  140 +-
 packages/net/lwip_tcpip/current/src/core/memp.c    |  138 +-
 packages/net/lwip_tcpip/current/src/core/netif.c   |  335 +++--
 packages/net/lwip_tcpip/current/src/core/pbuf.c    |  360 ++++-
 packages/net/lwip_tcpip/current/src/core/raw.c     |   49 +-
 .../lwip_tcpip/current/src/core/snmp/asn1_dec.c    |   32 +-
 .../lwip_tcpip/current/src/core/snmp/asn1_enc.c    |   56 +-
 .../net/lwip_tcpip/current/src/core/snmp/mib2.c    |  610 ++++----
 .../lwip_tcpip/current/src/core/snmp/mib_structs.c |   47 +-
 .../net/lwip_tcpip/current/src/core/snmp/msg_in.c  |  295 ++--
 .../net/lwip_tcpip/current/src/core/snmp/msg_out.c |   53 +-
 packages/net/lwip_tcpip/current/src/core/stats.c   |   59 +-
 packages/net/lwip_tcpip/current/src/core/sys.c     |  308 +---
 packages/net/lwip_tcpip/current/src/core/tcp.c     |  727 +++++++---
 packages/net/lwip_tcpip/current/src/core/tcp_in.c  |  377 +++--
 packages/net/lwip_tcpip/current/src/core/tcp_out.c | 1108 +++++++++-----
 packages/net/lwip_tcpip/current/src/core/timers.c  |  487 +++++++
 packages/net/lwip_tcpip/current/src/core/udp.c     |  376 +++--
 packages/net/lwip_tcpip/current/src/ecos/ppp.c     |    2 +-
 .../net/lwip_tcpip/current/src/ecos/sequential.c   |   45 +-
 packages/net/lwip_tcpip/current/src/ecos/simple.c  |   43 +-
 packages/net/lwip_tcpip/current/src/ecos/sio.c     |   38 +-
 .../net/lwip_tcpip/current/src/ecos/sys_arch.c     |  271 +++-
 packages/net/lwip_tcpip/current/src/netif/etharp.c | 1029 +++++++------
 .../net/lwip_tcpip/current/src/netif/ethernetif.c  |    1 -
 packages/net/lwip_tcpip/current/src/netif/loopif.c |   66 -
 .../net/lwip_tcpip/current/src/netif/ppp/auth.c    |  955 ++++++++----
 .../net/lwip_tcpip/current/src/netif/ppp/auth.h    |    2 +-
 .../net/lwip_tcpip/current/src/netif/ppp/chap.c    |  499 +++----
 .../net/lwip_tcpip/current/src/netif/ppp/chap.h    |   82 +-
 .../net/lwip_tcpip/current/src/netif/ppp/chat.c    |  332 -----
 .../net/lwip_tcpip/current/src/netif/ppp/chpms.c   |  182 +--
 .../net/lwip_tcpip/current/src/netif/ppp/chpms.h   |    8 +-
 .../net/lwip_tcpip/current/src/netif/ppp/fsm.c     |  489 +++----
 .../net/lwip_tcpip/current/src/netif/ppp/fsm.h     |   90 +-
 .../net/lwip_tcpip/current/src/netif/ppp/ipcp.c    |  297 ++--
 .../net/lwip_tcpip/current/src/netif/ppp/ipcp.h    |   64 +-
 .../net/lwip_tcpip/current/src/netif/ppp/lcp.c     |  498 ++++---
 .../net/lwip_tcpip/current/src/netif/ppp/lcp.h     |   72 +-
 .../net/lwip_tcpip/current/src/netif/ppp/magic.c   |   16 +-
 .../net/lwip_tcpip/current/src/netif/ppp/magic.h   |   14 +-
 .../net/lwip_tcpip/current/src/netif/ppp/md5.c     |  110 +-
 .../net/lwip_tcpip/current/src/netif/ppp/md5.h     |   10 +-
 .../net/lwip_tcpip/current/src/netif/ppp/pap.c     |  258 ++--
 .../net/lwip_tcpip/current/src/netif/ppp/pap.h     |   55 +-
 .../net/lwip_tcpip/current/src/netif/ppp/ppp.c     | 1531 +++++++++-----------
 .../net/lwip_tcpip/current/src/netif/ppp/ppp.h     |  201 +++
 .../lwip_tcpip/current/src/netif/ppp/ppp_impl.h    |  363 +++++
 .../net/lwip_tcpip/current/src/netif/ppp/ppp_oe.c  |  349 ++---
 .../lwip_tcpip/current/src/netif/ppp/pppdebug.h    |   55 +-
 .../net/lwip_tcpip/current/src/netif/ppp/randm.c   |  131 +-
 .../net/lwip_tcpip/current/src/netif/ppp/randm.h   |   18 +-
 .../net/lwip_tcpip/current/src/netif/ppp/record.c  |  127 --
 .../net/lwip_tcpip/current/src/netif/ppp/record.h  |   50 -
 .../net/lwip_tcpip/current/src/netif/ppp/timesys.c |  155 --
 .../net/lwip_tcpip/current/src/netif/ppp/timesys.h |   87 --
 packages/net/lwip_tcpip/current/src/netif/ppp/vj.c |  270 ++--
 packages/net/lwip_tcpip/current/src/netif/ppp/vj.h |   27 +-
 .../lwip_tcpip/current/src/netif/ppp/vjbsdhdr.h    |   75 -
 packages/net/lwip_tcpip/current/src/netif/slipif.c |  395 +++--
 .../lwip_tcpip/current/tests/httpd_sequential.c    |    5 +-
 packages/net/lwip_tcpip/current/tests/tcpecho.c    |    6 +-
 packages/net/lwip_tcpip/current/tests/udpecho.c    |    2 +-
 138 files changed, 15401 insertions(+), 11310 deletions(-)
 create mode 100644 packages/net/lwip_tcpip/current/include/lwip/tcp_impl.h
 create mode 100644 packages/net/lwip_tcpip/current/include/lwip/timers.h
 delete mode 100644 packages/net/lwip_tcpip/current/include/netif/loopif.h
 delete mode 100644 packages/net/lwip_tcpip/current/include/netif/ppp/chat.h
 delete mode 100644 packages/net/lwip_tcpip/current/include/netif/ppp/ppp.h
 create mode 100644 packages/net/lwip_tcpip/current/include/posix/netdb.h
 create mode 100644 packages/net/lwip_tcpip/current/include/posix/sys/socket.h
 create mode 100644 packages/net/lwip_tcpip/current/src/core/def.c
 create mode 100644 packages/net/lwip_tcpip/current/src/core/timers.c
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/loopif.c
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/chat.c
 create mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/ppp.h
 create mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/ppp_impl.h
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/record.c
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/record.h
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/timesys.c
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/timesys.h
 delete mode 100644 packages/net/lwip_tcpip/current/src/netif/ppp/vjbsdhdr.h

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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--- Comment #2 from Will Wagner <willw@carallon.com> ---
Created attachment 2279
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2279&action=edit
[PATCH 3/9] * Restructure vanilla lwip headers to ecos way

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--- Comment #1 from Will Wagner <willw@carallon.com> ---
Created attachment 2278
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2278&action=edit
[PATCH 2/9] * Add vanilla lwip 1.4.1 source

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--- Comment #4 from Will Wagner <willw@carallon.com> ---
Created attachment 2281
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2281&action=edit
[PATCH 5/9] * Make changes to ecos wrapper code for lwip

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--- Comment #3 from Will Wagner <willw@carallon.com> ---
Created attachment 2280
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2280&action=edit
[PATCH 4/9] * Apply previous ecos modifications to lwip

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--- Comment #6 from Will Wagner <willw@carallon.com> ---
Created attachment 2283
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2283&action=edit
[PATCH 7/9] * Rationalise whitespace in ecos lwip files

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--- Comment #5 from Will Wagner <willw@carallon.com> ---
Created attachment 2282
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2282&action=edit
[PATCH 6/9] * Improve lwip cdl options

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--- Comment #8 from Will Wagner <willw@carallon.com> ---
Created attachment 2285
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2285&action=edit
[PATCH 9/9] * Ensure udp stats counter correct when dropped packets

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--- Comment #7 from Will Wagner <willw@carallon.com> ---
Created attachment 2284
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2284&action=edit
[PATCH 8/9] * Fix LWIP compiler warnings

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Ilija Kocho <ilijak@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ilijak@siva.com.mk

--- Comment #9 from Ilija Kocho <ilijak@siva.com.mk> ---
Hi Will

Thank you for the contribution. I am trying to apply the patches with patch
utility but there are some problems.

   1. text format: It seem patch utility is not happy with lines containig "\
No newline at end of file".

   2. Once I overcame that I got stuck with patch 0005. It doesn't seem to fit
cdl/lwip_net.cdl

Please check the patches against current CVS / patch utility.

Ilija

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--- Comment #10 from Will Wagner <willw@carallon.com> ---
(In reply to comment #9)
> Hi Will
> 
> Thank you for the contribution. I am trying to apply the patches with patch
> utility but there are some problems.
> 
>    1. text format: It seem patch utility is not happy with lines containig
> "\ No newline at end of file".
> 
>    2. Once I overcame that I got stuck with patch 0005. It doesn't seem to
> fit cdl/lwip_net.cdl
> 
> Please check the patches against current CVS / patch utility.
> 
> Ilija

I was using a slightly old version of the eCosPro hg repository. The first
patch doesn't apply against head because of jld's commit 8 days ago to snmp in
lwip. I have respun my patches bases upon current head of the hg repository,
but only the first patch changes. I realise I was removing the from/date info
from the patches before, perhaps this was causing your issue.

I am able to apply all patches to CVS head using "patch -p < filename"

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2277|0                           |1
        is obsolete|                            |

--- Comment #11 from Will Wagner <willw@carallon.com> ---
Created attachment 2301
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2301&action=edit
[PATCH 1/9] * Removed LWIP 1.3.2 in preparation for adding 1.4.1

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2278|0                           |1
        is obsolete|                            |

--- Comment #12 from Will Wagner <willw@carallon.com> ---
Created attachment 2302
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2302&action=edit
[PATCH 2/9] * Add vanilla lwip 1.4.1 source

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2279|0                           |1
        is obsolete|                            |

--- Comment #13 from Will Wagner <willw@carallon.com> ---
Created attachment 2303
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2303&action=edit
[PATCH 3/9] * Restructure vanilla lwip headers to ecos way

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2280|0                           |1
        is obsolete|                            |

--- Comment #14 from Will Wagner <willw@carallon.com> ---
Created attachment 2304
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2304&action=edit
[PATCH 4/9] * Apply previous ecos modifications to lwip

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2281|0                           |1
        is obsolete|                            |

--- Comment #15 from Will Wagner <willw@carallon.com> ---
Created attachment 2305
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2305&action=edit
[PATCH 5/9] * Make changes to ecos wrapper code for lwip

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2283|0                           |1
        is obsolete|                            |

--- Comment #17 from Will Wagner <willw@carallon.com> ---
Created attachment 2307
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2307&action=edit
[PATCH 7/9] * Rationalise whitespace in ecos lwip files

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2284|0                           |1
        is obsolete|                            |

--- Comment #18 from Will Wagner <willw@carallon.com> ---
Created attachment 2308
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2308&action=edit
[PATCH 8/9] * Fix LWIP compiler warnings

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2282|0                           |1
        is obsolete|                            |

--- Comment #16 from Will Wagner <willw@carallon.com> ---
Created attachment 2306
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2306&action=edit
[PATCH 6/9] * Improve lwip cdl options

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2285|0                           |1
        is obsolete|                            |

--- Comment #19 from Will Wagner <willw@carallon.com> ---
Created attachment 2309
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2309&action=edit
2285: [PATCH 9/9] * Ensure udp stats counter correct when dropped packets

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--- Comment #20 from Ilija Kocho <ilijak@siva.com.mk> ---
(In reply to comment #10)
> (In reply to comment #9)
> > Hi Will
> > 
> > Thank you for the contribution. I am trying to apply the patches with patch
> > utility but there are some problems.
> > 
> >    1. text format: It seem patch utility is not happy with lines containig
> > "\ No newline at end of file".
> > 
> >    2. Once I overcame that I got stuck with patch 0005. It doesn't seem to
> > fit cdl/lwip_net.cdl
> > 
> > Please check the patches against current CVS / patch utility.
> > 
> > Ilija
> 
> I was using a slightly old version of the eCosPro hg repository. The first
> patch doesn't apply against head because of jld's commit 8 days ago to snmp
> in lwip. I have respun my patches bases upon current head of the hg
> repository, but only the first patch changes. I realise I was removing the
> from/date info from the patches before, perhaps this was causing your issue.
> 
> I am able to apply all patches to CVS head using "patch -p < filename"

Now it fits. Thanks.
I'll play little bit with it and come back with comments.

Ilija

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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John Dallaway <john@dallaway.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |john@dallaway.org.uk

--- Comment #21 from John Dallaway <john@dallaway.org.uk> ---
Will, the complete diff against existing eCos sources looks clean.

Can you let me know which significant lwIP features you have exercised using
this codebase? For example, which protocols, interfaces and APIs?

Also, have you been able to run the eCos tests for lwIP?

Finally, can you confirm that all the eCos patches (changes relative to
upstream lwIP 1.3.2) have been applied to lwIP 1.4.1? I appreciate that the
PPP-related patches will have been dropped in favour of the new lwIP
implementation.

Thanks

John Dallaway

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John Dallaway <john@dallaway.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEEDINFO
     Ever confirmed|0                           |1

--- Comment #22 from John Dallaway <john@dallaway.org.uk> ---
Will, given the number of changes to the eCos-specific wrapper code in this
contribution, I must ask you and any other authors to each make a copyright
assignment to the Free Software Foundation. Rationale for copyright assignment:

  http://ecos.sourceware.org/contrib.html

Assignment procedure details:

  http://ecos.sourceware.org/assign.html

For avoidance of doubt, you should not list files in your assignment which have
been changed or introduced only as a result of the lwIP 1.4.1 import from
upstream since these changes have not been authored by yourselves.

Thanks

John Dallaway

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |MODIFIED

--- Comment #23 from Will Wagner <willw@carallon.com> ---
(In reply to comment #21)
> Will, the complete diff against existing eCos sources looks clean.
> 
> Can you let me know which significant lwIP features you have exercised using
> this codebase? For example, which protocols, interfaces and APIs?

In our code we have only really used the sequential mode. Have used ARP, ICMP,
IGMP, UDP, TCP using netconn and sockets API. Have also only been testing on
devices with a single network interface.

> 
> Also, have you been able to run the eCos tests for lwIP?

We have had httpd_sequential and httpd_simple both working fine. We'll take a
look at running more of the tests.

> 
> Finally, can you confirm that all the eCos patches (changes relative to
> upstream lwIP 1.3.2) have been applied to lwIP 1.4.1? I appreciate that the
> PPP-related patches will have been dropped in favour of the new lwIP
> implementation.

Yes I believe so. Most of the eCos patches for lwip since the move to lwIP
1.3.2 have been in the eCos wrapper not the actual lwIP code. We have left the
wrapper untouched except where needed. Patch 4 contains all the previous
modifications to lwIP code and is just reapplying part of the commit
"cdl/lwip_net.cdl: New CDL option CYGSEM_LWIP_MEM_SECTION."

The two other commits to lwIP code were "Fix compiler warning about unused
variables. [Bugzilla 1001521]" and "src/core/snmp/msg_out.c: Applied lwip
bugfix #29256." both of which are dealt with now in the upstream lwIP 1.4.1
code

> 
> Thanks
> 
> John Dallaway

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--- Comment #24 from Will Wagner <willw@carallon.com> ---
(In reply to comment #22)
> Will, given the number of changes to the eCos-specific wrapper code in this
> contribution, I must ask you and any other authors to each make a copyright
> assignment to the Free Software Foundation. Rationale for copyright
> assignment:
> 
>   http://ecos.sourceware.org/contrib.html
> 
> Assignment procedure details:
> 
>   http://ecos.sourceware.org/assign.html
> 
> For avoidance of doubt, you should not list files in your assignment which
> have been changed or introduced only as a result of the lwIP 1.4.1 import
> from upstream since these changes have not been authored by yourselves.
> 
> Thanks
> 
> John Dallaway

Have started this process.

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--- Comment #25 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
Created attachment 2365
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2365&action=edit
ECM optimised for lwIP nc_test_slave

I tried nc_test_slave on Kinetis K70 and it works fine. Here I attach ECM file
of my test configuration.

Will, this is a great work, however there are some things to address:

1. Compilation of tests breaks on compiling the PPP test. The following
lwip_net.cdl hack makes it compile:

         calculated      { "tests/httpd_sequential tests/httpd_simple " .
-                          "tests/nc_test_slave tests/ppp " .
+                          "tests/nc_test_slave " .
                           "tests/socket tests/sys_timeout tests/tcpecho " .
                           "tests/udpecho" }

This is, however, a workaround rather than fix. The PPP test program should be
either fixed (synchronised with PPP upgrade) or, if obsolete, removed
completely.

2. There are still some compiler warnings ( GCC 4.6.3 - eCos GNU Tools
4.6.3-20120623 )

3. There's no ChangeLog record.

4. Copyright banners of eCos specific files that you have touched should be
updated.

Ilija

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Subject: [Bug 1001873] Patches to upgrade lwip to 1.4.1
Date: Fri, 13 Sep 2013 20:30:00 -0000
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--- Comment #25 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
Created attachment 2365
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2365&action=edit
ECM optimised for lwIP nc_test_slave

I tried nc_test_slave on Kinetis K70 and it works fine. Here I attach ECM file
of my test configuration.

Will, this is a great work, however there are some things to address:

1. Compilation of tests breaks on compiling the PPP test. The following
lwip_net.cdl hack makes it compile:

         calculated      { "tests/httpd_sequential tests/httpd_simple " .
-                          "tests/nc_test_slave tests/ppp " .
+                          "tests/nc_test_slave " .
                           "tests/socket tests/sys_timeout tests/tcpecho " .
                           "tests/udpecho" }

This is, however, a workaround rather than fix. The PPP test program should be
either fixed (synchronised with PPP upgrade) or, if obsolete, removed
completely.

2. There are still some compiler warnings ( GCC 4.6.3 - eCos GNU Tools
4.6.3-20120623 )

3. There's no ChangeLog record.

4. Copyright banners of eCos specific files that you have touched should be
updated.

Ilija

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You have one or more bugs assigned to you in the Bugzilla bug tracking system (http://bugs.ecos.sourceware.org/) that require
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All of these bugs are in the CONFIRMED
state, and have not been touched in 7 days or more.
You need to take a look at them, and decide on an initial action.

Generally, this means one of three things:

(1) You decide this bug is really quick to deal with (like, it's INVALID),
    and so you get rid of it immediately.
(2) You decide the bug doesn't belong to you, and you reassign it to
    someone else. (Hint: if you don't know who to reassign it to, make
    sure that the Component field seems reasonable, and then use the
    "Reset Assignee to default" option.)
(3) You decide the bug belongs to you, but you can't solve it this moment.
    Accept the bug by setting the status to IN_PROGRESS.

To get a list of all CONFIRMED bugs, you can use this URL (bookmark
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Or, you can use the general query page, at
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Appended below are the individual URLs to get to all of your CONFIRMED bugs
that haven't been touched for 7 days or more.

You will get this message once a day until you've dealt with these bugs!

 STM32 USB driver unplugging/replugging issue
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001084
 Navigation of the documentation using PREV NEXT PARENT arrows broken
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001146
 help documentation tree does not correspond to viewed document
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001148
 documentation tree in navigation panel does not open at viewed document
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001149
 CAN loopback driver requires CYGPKG_DEVS_CAN_LOOP_CAN[01]
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001211
 eCos GNU tools 4.6.3
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001468
 Fix compiler warnings about mismatch between log() format string and argument values.
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001510
 Array index out of bounds in tftp_server.c
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001522
 Cortex-M: Remote 'g' packet reply is too long
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001524
 Single precision floating point math library
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001539
 BSD nc_test_slave chrashes
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001586
 [RFC] eCos FLASH startup from RedBoot
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001623
 Kinetis variant HAL patch: mostly cosmetic and descriptive improvements
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001783
 Kinetis DSPI, flash and platform HAL tidies
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001784
 Data not relocated to RAM during ROMINT startup
    -> http://bugs.ecos.sourceware.org/show_bug.cgi?id\x1001864

[Bug 1001873] Patches to upgrade lwip to 1.4.1

[bugzilla-daemon]

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Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |NEEDINFO

--- Comment #26 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
 (In reply to comment #24)

Will

I have been playing your port for a while (Kinetis K70) and it seems stable.
Still we need two things in order to carry on towards checking it in eCos main
tree:
   - the copyright assignment (please see my question below) and
   - little things that I have mentioned in Comment #25.

Please for information.
Thanks

Ilija

[snip]

> > Will, given the number of changes to the eCos-specific wrapper code in this
> > contribution, I must ask you and any other authors to each make a copyright
> > assignment to the Free Software Foundation. Rationale for copyright

[snip]

> > Thanks
> > 
> > John Dallaway
> 
> Have started this process.

It's been a while and we still haven't got your copyright assignment.
What's the status?

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From: bugzilla-daemon@bugs.ecos.sourceware.org
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Subject: [Bug 1001873] Patches to upgrade lwip to 1.4.1
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Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |NEEDINFO

--- Comment #26 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
 (In reply to comment #24)

Will

I have been playing your port for a while (Kinetis K70) and it seems stable.
Still we need two things in order to carry on towards checking it in eCos main
tree:
   - the copyright assignment (please see my question below) and
   - little things that I have mentioned in Comment #25.

Please for information.
Thanks

Ilija

[snip]

> > Will, given the number of changes to the eCos-specific wrapper code in this
> > contribution, I must ask you and any other authors to each make a copyright
> > assignment to the Free Software Foundation. Rationale for copyright

[snip]

> > Thanks
> > 
> > John Dallaway
> 
> Have started this process.

It's been a while and we still haven't got your copyright assignment.
What's the status?

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--- Comment #3 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
Checked in.

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            Bug ID: 1001944
           Summary: The  DHCPREQUEST message should contain the same 'xid'
                    as the DHCPOFFER message.
           Product: eCos
           Version: CVS
            Target: All
  Architecture/Host All
                OS:
            Status: UNCONFIRMED
          Severity: minor
          Priority: low
         Component: TCP/IP
          Assignee: unassigned@bugs.ecos.sourceware.org
          Reporter: J.Lambrecht@televic.com
                CC: ecos-bugs@ecos.sourceware.org

Created attachment 2450
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id$50&actioníit
patch that fixes this bug

According to RFC 2131 (http://www.faqs.org/rfcs/rfc2131.html): "The
DHCPREQUEST message contains the same 'xid' as the DHCPOFFER message."
So in a DHCP DORA cycle (Discover-Offer-Request-Acknowledge) the same
transaction ID should be used ('xid' in C code).
Now the next 'xid' is taken: "Happy to advance, so new XID"

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |MODIFIED

--- Comment #27 from Will Wagner <willw@carallon.com> ---
Hi Ilija,

We actually did some work on this at the end of last year, but then it got lost
in amongst other things.

(In reply to comment #25)
> 
> 1. Compilation of tests breaks on compiling the PPP test. The following
> lwip_net.cdl hack makes it compile:
> 
>          calculated      { "tests/httpd_sequential tests/httpd_simple " .
> -                          "tests/nc_test_slave tests/ppp " .
> +                          "tests/nc_test_slave " .
>                            "tests/socket tests/sys_timeout tests/tcpecho " .
>                            "tests/udpecho" }
> 
> This is, however, a workaround rather than fix. The PPP test program should
> be either fixed (synchronised with PPP upgrade) or, if obsolete, removed
> completely.

We have a patch I'll attach shortly that removes the test. Neither of us who
have worked on this are in any way ppp experts, however we felt it was just not
possible to port the test to the new version of lwip so we have removed it.

> 
> 2. There are still some compiler warnings ( GCC 4.6.3 - eCos GNU Tools
> 4.6.3-20120623 )

We see no warnings (CodeConfidence tools GCC 4.3.2). If you give details we can
try to take a look at them.

> 
> 3. There's no ChangeLog record.

Will attach patch shortly

> 
> 4. Copyright banners of eCos specific files that you have touched should be
> updated.

Will attach patch shortly

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           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2305|0                           |1
        is obsolete|                            |

--- Comment #28 from Will Wagner <willw@carallon.com> ---
Created attachment 2463
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2463&action=edit
[PATCH 05/13] * Make changes to ecos wrapper code for lwip

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--- Comment #29 from Will Wagner <willw@carallon.com> ---
Created attachment 2464
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2464&action=edit
[PATCH 06/13] * Improve lwip cdl options

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        is obsolete|                            |

--- Comment #32 from Will Wagner <willw@carallon.com> ---
Created attachment 2467
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2467&action=edit
[PATCH 09/13] * Ensure udp stats counter correct when dropped packets

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--- Comment #31 from Will Wagner <willw@carallon.com> ---
Created attachment 2466
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2466&action=edit
[PATCH 08/13] * Fix LWIP compiler warnings

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--- Comment #30 from Will Wagner <willw@carallon.com> ---
Created attachment 2465
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2465&action=edit
[PATCH 07/13] * Rationalise whitespace in ecos lwip files

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--- Comment #33 from Will Wagner <willw@carallon.com> ---
Created attachment 2468
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2468&action=edit
[PATCH 10/13] * Added CHAT support back in for lwip.

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--- Comment #34 from Will Wagner <willw@carallon.com> ---
Created attachment 2469
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2469&action=edit
[PATCH 11/13] * Fixed a lwip 1.4.1 compile bug.

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--- Comment #35 from Will Wagner <willw@carallon.com> ---
Created attachment 2470
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2470&action=edit
[PATCH 12/13] * Added changelog entry for LWIP 1.4.1 update.

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--- Comment #37 from Will Wagner <willw@carallon.com> ---
Created attachment 2472
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2472&action=edit
[PATCH 13/13] * Updated lwip copyright headers of edited files.

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        is obsolete|                            |

--- Comment #36 from Will Wagner <willw@carallon.com> ---
Created attachment 2471
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2471&action=edit
[PATCH 12/13] * Added changelog entry for LWIP 1.4.1 update.

Remove unwanted whitespace changes

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Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |NEEDINFO

--- Comment #38 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
(In reply to comment #27)

Will

Thank you for the update. I apologize for delay, but I am very busy. I hope to
have more time next week or a week after...

In meantime just to remind you about the copyright assignment. Have you send
it? If yes, do you have a reply from FSF?


> Hi Ilija,
> 
> We actually did some work on this at the end of last year, but then it got
> lost in amongst other things.
> 

[snip]

> > 
> > 2. There are still some compiler warnings ( GCC 4.6.3 - eCos GNU Tools
> > 4.6.3-20120623 )
> 
> We see no warnings (CodeConfidence tools GCC 4.3.2). If you give details we
> can try to take a look at them.
> 

Usually newer versions introduce new warnings. At least it is case with 4.6.3
compared with 4.3.2. 

If you're working with ARM targets you may try eCos arm-eabi GNU tools - test
release 4.6.3-20120623 ref:
http://ecos.sourceware.org/ml/ecos-discuss/2012-06/msg00047.html

Ilija

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From: bugzilla-daemon@bugs.ecos.sourceware.org
To: ecos-bugs@ecos.sourceware.org
Subject: [Bug 1001873] Patches to upgrade lwip to 1.4.1
Date: Tue, 11 Mar 2014 22:25:00 -0000
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Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |NEEDINFO

--- Comment #38 from Ilija Kocho [Илија Кочо] <ilijak@siva.com.mk> ---
(In reply to comment #27)

Will

Thank you for the update. I apologize for delay, but I am very busy. I hope to
have more time next week or a week after...

In meantime just to remind you about the copyright assignment. Have you send
it? If yes, do you have a reply from FSF?


> Hi Ilija,
> 
> We actually did some work on this at the end of last year, but then it got
> lost in amongst other things.
> 

[snip]

> > 
> > 2. There are still some compiler warnings ( GCC 4.6.3 - eCos GNU Tools
> > 4.6.3-20120623 )
> 
> We see no warnings (CodeConfidence tools GCC 4.3.2). If you give details we
> can try to take a look at them.
> 

Usually newer versions introduce new warnings. At least it is case with 4.6.3
compared with 4.3.2. 

If you're working with ARM targets you may try eCos arm-eabi GNU tools - test
release 4.6.3-20120623 ref:
http://ecos.sourceware.org/ml/ecos-discuss/2012-06/msg00047.html

Ilija

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Subject: [Bug 1001873] Patches to upgrade lwip to 1.4.1
Date: Wed, 12 Mar 2014 09:16:00 -0000
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Will Wagner <willw@carallon.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |MODIFIED

--- Comment #39 from Will Wagner <willw@carallon.com> ---
(In reply to comment #38)
> (In reply to comment #27)
>
> Will
>
> Thank you for the update. I apologize for delay, but I am very busy. I hope
> to have more time next week or a week after...
>
> In meantime just to remind you about the copyright assignment. Have you send
> it? If yes, do you have a reply from FSF?

Yes, this is complete, we have had a reply from FSF.

>
>
> > Hi Ilija,
> >
> > We actually did some work on this at the end of last year, but then it got
> > lost in amongst other things.
> >
>
> [snip]
>
> > >
> > > 2. There are still some compiler warnings ( GCC 4.6.3 - eCos GNU Tools
> > > 4.6.3-20120623 )
> >
> > We see no warnings (CodeConfidence tools GCC 4.3.2). If you give details we
> > can try to take a look at them.
> >
>
> Usually newer versions introduce new warnings. At least it is case with
> 4.6.3 compared with 4.3.2.
>
> If you're working with ARM targets you may try eCos arm-eabi GNU tools -
> test release 4.6.3-20120623 ref:
> http://ecos.sourceware.org/ml/ecos-discuss/2012-06/msg00047.html

We'll give it a try when we get the chance.

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[Bug 1001873] Patches to upgrade lwip to 1.4.1

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Ilija Stanislevik <ilijas@siva.com.mk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ilijas@siva.com.mk

--- Comment #43 from Ilija Stanislevik <ilijas@siva.com.mk> ---
(In reply to comment #41)
ppp.h resides in .../src/netif/ppp now, which makes ppp support inaccessible
from an application. I suggest moving ppp.h back to .../include/netif/ppp.

Actually, I did it for test and the package works with my ppp application.

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Oleg Uzenkov <o.uzenkov@unicore.co.ua> changed:

           What    |Removed                     |Added
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                 CC|                            |o.uzenkov@unicore.co.ua

--- Comment #44 from Oleg Uzenkov <o.uzenkov@unicore.co.ua> ---
Hi Guys,

First and foremost thank you very much for the patches provided here.

I have successfully upgraded lwip 1.3.2 to vanilla lwip 1.4.1 in ecos using
consolidated patch 1-13 kindly provided by Illija. BTW, I tested PPP on
stm32f4-discovery and it works (but for some reason less stable than ppp in
lwip 1.3.2, I can provide more info if requested).

There have been some major changes since vanilla lwip 1.4.1 commit in
particular ppp-new has been merged into master branch. Since the nature of my
project depends on lwip ppp implementation, I would like to use its most recent
version.

Please, suggest how to go about upgrading vanilla lwip 1.4.1 in ecos to the
most new version of lwip 1.4.1.

I would be grateful for any help on this.

Oleg

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--- Comment #46 from Oleg Uzenkov <o.uzenkov@unicore.co.ua> ---
Hi Ilija,

Thanks for your advice. I will do what you suggested. If the upgrade is
successful I will upload it here. 

As to the work of PPP in the vanilla lwip 1.4.1, when trying to connect, quite
often I used to receive the following debug log:

++++++++++++++++++++++

[DEBUG] Initializing PPP
lcp_init: xmit_accm=0 0 0 0
upap_init: 0
pppOverSerialOpen: unit 0: Connecting
pppStart: unit 0
ppp_set_xaccm[0]: outACCM=0 0 0 0
ppp_send_config[0]: outACCM=FF FF FF FF
ppp_recv_config[0]: inACCM=0 0 0 0
lcp_lowerup: asyncmap=0 0 0 0
LCP: lowerup state 0 (LS_INITIAL) -> 2 (LS_CLOSED)
auth_reset: 0
lcp_addci: L opt=2 0
lcp_addci: L opt=5 2FF6F209
lcp_addci: opt=7
lcp_addci: opt=8
pppWrite[0]: len=46
fsm_sdata(LCP): Sent code 1,1,20.
LCP: sending Configure-Request, id 1
LCP: open state 2 (LS_CLOSED) -> 6 (LS_REQSENT)
pppStart: finished
LCP: timeout resending Config-Request state=6 (LS_REQSENT)
lcp_addci: L opt=2 0
lcp_addci: L opt=5 2FF6F209
lcp_addci: opt=7
lcp_addci: opt=8
pppWrite[0]: len=45
fsm_sdata(LCP): Sent code 1,1,20.
LCP: sending Configure-Request, id 1
LCP: timeout resending Config-Request state=6 (LS_REQSENT)
lcp_addci: L opt=2 0
lcp_addci: L opt=5 2FF6F209
lcp_addci: opt=7
lcp_addci: opt=8
pppWrite[0]: len=45
fsm_sdata(LCP): Sent code 1,1,20.
LCP: sending Configure-Request, id 1
LCP: timeout resending Config-Request state=6 (LS_REQSENT)
++++++++++++++++++++++++++++++

(This is just a snipet from the log.)
Apparently, it meant that I did not receive anything from GPRS modem through
the serial port. That happened quite often, however, successful connection did
happen also.

But when I started using GPRS VPN service from my cellular network provider
this problem has not shown up yet. I have tested it several times and there was
always  a successfull connection. So I believe now, the problem was related to
the quality of service and not to the PPP (1.4.1) implementation.

Oleg

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--- Comment #48 from Oleg Uzenkov <o.uzenkov@unicore.co.ua> ---
Ilija,

(In reply to comment #47)
> Oleg
> 
> (In reply to comment #46)
> 
> Thank you for your report. I have some additional questions.
> 
> > Hi Ilija,
> > 
> 
> [SNIP]
> 
> > 
> > (This is just a snipet from the log.)
> > Apparently, it meant that I did not receive anything from GPRS modem through
> > the serial port. That happened quite often, however, successful connection
> > did happen also.
> 
> What was your serial line setting: baud rate, (hardware) handshaking ?

Serial settings: 9600, 8N1 (no hw/sw control)

> 
> > 
> > But when I started using GPRS VPN service from my cellular network provider
> > this problem has not shown up yet. I have tested it several times and there
> > was always  a successfull connection. So I believe now, the problem was
> > related to the quality of service and not to the PPP (1.4.1) implementation.
> 
> Can you try different locations?

I tired two providers. 

> 
> Ilija

Another problem came up:
Sometimes when ppp connection gets terminated (it can happen all of a sudden,
not sure why) and the stack is then trying to reconnect (i have a state machine
logic, see below), it cannot open serial port (pppOpen, pd is negative, see
below) again after it has been closed with pppClose. Please note, sometimes it
can reopen serial port, but not always. The lwip stack is in simple mode (i.e.
NO_SYS=1).

With 1.3.2 version of ppp I do not have these problems.

Here is the code snippet with the logic:
  void ppp_service::_thread_func (cyg_addrword_t p)
  {
    int err;
    cyg_uint32 len;
    cyg_uint32 cfg_data;
    int pd = -1;
    sio_fd_t sd;
    chat_t chat;

    int count;
    static const cyg_uint32 buf_length = 128;
    u8_t rxbuf[buf_length];

    ppp_service * srv = reinterpret_cast<ppp_service *> (p);

    /*configure serial port */
    err = cyg_io_lookup (SERIAL_PORT, &sd);
    LOG_ASSERT (err == ENOERR);
    LOG_ASSERT (sd != NULL);

    /* read port configuration */
    cyg_serial_info_t port_info;
    cyg_uint32 port_info_len = sizeof (port_info);
    err = cyg_io_get_config (sd,
              CYG_IO_GET_CONFIG_SERIAL_INFO,
              &port_info,
              &port_info_len);
    LOG_ASSERT (err == ENOERR);

    /* update port configuration */
    port_info_len = sizeof (port_info);

    port_info.baud = CYGNUM_SERIAL_BAUD_9600;
    port_info.stop = CYGNUM_SERIAL_STOP_1;
    port_info.parity = CYGNUM_SERIAL_PARITY_NONE;
    port_info.word_length = CYGNUM_SERIAL_WORD_LENGTH_8;

    err = cyg_io_set_config (sd,
              CYG_IO_SET_CONFIG_SERIAL_INFO,
              &port_info,
              &port_info_len);
    LOG_ASSERT (err == ENOERR);

    /**
     * configure cyg_io_read to be non-blocking
     * since blocking cannot be used in interrupts
     */
    cfg_data = 0;
    len = sizeof(cfg_data);
    err = cyg_io_set_config (sd, CYG_IO_SET_CONFIG_READ_BLOCKING, &cfg_data,
&len);
    LOG_ASSERT (err == ENOERR);


    while (1) {
      switch (srv->_init_state) {
        case CHAT_INIT:
          chat = chat_new(sd, chat_items, CHAT_TIMEOUT, srv->_chat_cb,
                          srv->_chat_send_cb, static_cast<void*>(srv));
          srv->_init_state = CHAT_RUN;
          break;
        case CHAT_RUN:
          chat_poll(chat);
          break;
        case CHAT_FINISH:
          chat_free(chat);
          chat = NULL;
          if (srv->_chat_ok) {
            srv->_init_state = PPP_INIT;
          } else {
            srv->_init_state = CHAT_INIT;
          }
          break;
        case PPP_INIT:          
          pppInit();          
          pd = pppOpen(sd, srv->_ppp_status_cb, static_cast<void*>(srv));
          if (pd < 0) {
            syslog (LOG_CRIT, "Cannot open PPP over serial\n");
          }
          pppSetAuth(PPPAUTHTYPE_ANY, PPP_USER, PPP_PASSWORD);          
          srv->_init_state = PPP_INIT_WAIT;
          break;
        case PPP_INIT_WAIT:
          sys_check_timeouts();
          count = sio_read(sd, (u8_t*)rxbuf, buf_length);
          if(count > 0) 
          {
            pppos_input(pd, rxbuf, count);
          }
          else
          {
            sys_msleep(1);
            //cyg_thread_delay(10);
          }
          srv->_init_state = PPP_UP;
          break;        
        case PPP_UP:
          sys_check_timeouts();
          count = sio_read(sd, (u8_t*)rxbuf, buf_length);
          if(count > 0) 
          {
            pppos_input(pd, rxbuf, count);
          }
          else
          {
            sys_msleep(1);
            //cyg_thread_delay(10);
          }
          break;
        case FINISH:
          pppClose(pd);
          /* free chat if reconnect happend whilst chat init */
          if (chat != NULL)
          {
            chat_free(chat);
          }
          srv->_init_state = FINISH_WAIT;
          break;
        case FINISH_WAIT:
          srv->_init_state = CHAT_INIT;
          cyg_thread_delay(20); //wait for x clks
          break;
      }
      cyg_thread_yield();
    }
  }

We do need to port ppp-new branch to ecos as judging from the author's comments
it is more stable than the ppp implementation in vanilla 1.4.1 ppp stack (link:
http://lists.gnu.org/archive/html/lwip-users/2014-03/msg00061.html)

Oleg

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