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[Qemu-devel] [Bug 935945] Re: SLIRP still not working for win32


From: T. Huth
Subject: [Qemu-devel] [Bug 935945] Re: SLIRP still not working for win32
Date: Wed, 15 Jun 2016 15:47:27 -0000

** Changed in: qemu
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/935945

Title:
  SLIRP still not working for win32

Status in QEMU:
  Fix Released

Bug description:
  SLIRP has not worked since 0.14.1 (broken since the move to
  gthread/gio from the glib library which inherited -mms-bitfields on
  MinGW32 breaking bit padding on TCP/UDP packets). Patches attempting
  to reverse effects of GCC's -mms-bitfields do not seem to fix SLIRP.

  Here is an example slirp debug log:

  arp_table_add...
  ip = 0x502000a
  hw addr = 52:54:00:12:34:56
  arp_table_add...
  ip = 0x502000a
  hw addr = 52:54:00:12:34:56
  m_get...
  m = 5bd4f0b8
  ip_input...
  m = 5bd4f0b8
  m_len = 84
  icmp_input...
  m = 5bd4f0b8
  m_len = 84
  icmp_type = 8
  ip_output...
  so = 0
  m0 = 5bd4f0b8
  if_output...
  so = 0
  ifm = 5bd4f0b8
  if_start...
  arp_table_search...
  ip = 0x502000a
  found hw addr = 52:54:00:12:34:56
  m_free...
  m = 5bd4f0b8
  m_get...
  m = 5bd4f0b8
  ip_input...
  m = 5bd4f0b8
  m_len = 84
  icmp_input...
  m = 5bd4f0b8
  m_len = 84
  icmp_type = 8
  ip_output...
  so = 0
  m0 = 5bd4f0b8
  if_output...
  so = 0
  ifm = 5bd4f0b8
  if_start...
  arp_table_search...
  ip = 0x502000a
  found hw addr = 52:54:00:12:34:56
  m_free...
  m = 5bd4f0b8
  arp_table_add...
  ip = 0x502000a
  hw addr = 52:54:00:12:34:56
  m_get...
  m = 5bd4f0b8
  ip_input...
  m = 5bd4f0b8
  m_len = 55
  udp_input...
  m = 5bd4f0b8
  iphlen = 20
  sosendto...
  so = 5bd104a0
  m = 5bd4f0b8
  sendto()ing, addr.sin_port=53, addr.sin_addr.s_addr=8.8.8.8
  m_free...
  m = 0
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  m_get...
  m = 5bd4f728
  ip_input...
  m = 5bd4f728
  m_len = 55
  udp_input...
  m = 5bd4f728
  iphlen = 20
  sosendto...
  so = 5bd104a0
  m = 5bd4f728
  sendto()ing, addr.sin_port=53, addr.sin_addr.s_addr=8.8.8.8
  m_free...
  m = 5bd4f0b8
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  m_get...
  m = 5bd4f0b8
  ip_input...
  m = 5bd4f0b8
  m_len = 55
  udp_input...
  m = 5bd4f0b8
  iphlen = 20
  sosendto...
  so = 5bd104a0
  m = 5bd4f0b8
  sendto()ing, addr.sin_port=53, addr.sin_addr.s_addr=8.8.8.8
  m_free...
  m = 5bd4f728
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  ip_slowtimo...
  tcp_slowtimo...
  [repeated]

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