No tcp connection establishment with 2.4

DISCUSSION Michele Iacobellis 4 participants 6 messages Nov 9, 2000 – Nov 13, 2000

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Michele Iacobellis

author

2000-11-09 11:03 UTC #0 lore raw

[Summary]
No tcp connection establishment with 2.4

[Description]
I know these sites use some versions of linux:

www.libero.it
www.iol.it
www.arianna.it

and some other outside Italy.

The problem is that the kernel 2.4 can't establish a tcp connection with these sites. The command "netstat -ta" reports a SYN_SENT and nothing else (after some time there is a connection time out). If I try to connect using kernel 2.2 (or Win) all goes well.

[Keywords]
networking, tcp

[Kernel Version]
2.4.0-test9

[Output of ver_linux]
Linux datanexus1.mike.it 2.4.0-test9 #2 Sat Oct 14 15:59:02 CEST 2000 i686 unknown

Kernel modules         2.3.10
Gnu C                  2.95.3
Gnu Make               3.79
Binutils               2.9.5.0.31
Linux C Library        2.1.3
Dynamic linker         ldd (GNU libc) 2.1.3
Linux C++ Library      10.0.so
Procps                 2.0.6
Mount                  2.10h
Net-tools              1.55
Console-tools          0.2.3
Sh-utils               2.0
Modules Loaded         ne2k-pci 8390 via82cxxx_audio ac97_codec soundcore r128 agpgart

[Processor]
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 2
model name : AMD Athlon(tm) Processor
stepping : 2
cpu MHz : 700.000053
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmxext mmx fxsr 3dnowext 3dnow
bogomips : 1395.92

[Modules]

ne2k-pci                4468   1 (autoclean)
8390                    6264   0 (autoclean) [ne2k-pci]
via82cxxx_audio        11024   0
ac97_codec              7556   0 [via82cxxx_audio]
soundcore               4068   2 [via82cxxx_audio]
r128                   70528   1

agpgart 13508 10

[Ports]
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
02f8-02ff : serial(auto)
0376-0376 : ide1
03c0-03df : vga+
03f6-03f6 : ide0
03f8-03ff : serial(auto)
0cf8-0cff : PCI conf1
9400-941f : Realtek Semiconductor Co., Ltd. RTL-8029(AS)
9400-941f : ne2k-pci
a000-a003 : VIA Technologies, Inc. AC97 Audio Controller a400-a403 : VIA Technologies, Inc. AC97 Audio Controller a800-a8ff : VIA Technologies, Inc. AC97 Audio Controller
a800-a8ff : via82cxxx
b000-b01f : VIA Technologies, Inc. UHCI USB (#2) b400-b41f : VIA Technologies, Inc. UHCI USB
b800-b80f : VIA Technologies, Inc. Bus Master IDE
b800-b807 : ide0
b808-b80f : ide1
d000-dfff : PCI Bus #01
d800-d8ff : ATI Technologies Inc Rage 128 RF
e400-e4ff : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] e800-e80f : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI]

[Mem]
00000000-0009efff : System RAM 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000f0000-000fffff : System ROM 00100000-0ffeffff : System RAM
00100000-00250d0f : Kernel code 00250d10-0026a7a7 : Kernel data
df000000-dfefffff : PCI Bus #01
df000000-df003fff : ATI Technologies Inc Rage 128 RF

    df000000-df003fff : aty128fb MMIO
dff00000-e3ffffff : PCI Bus #01
  e0000000-e3ffffff : ATI Technologies Inc Rage 128 RF
    e0000000-e3ffffff : aty128fb FB

e4000000-e7ffffff : VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x]

[PCI]

VIA Technologies|VT82C691 [Apollo PRO] (unknown ignore)
VIA Technologies|VT82C598 [Apollo MVP3 AGP] (unknown ignore)
VIA Technologies|VT82C686 [Apollo Super] (unknown unknown)
VIA Technologies|VT82C586 IDE [Apollo] (STORAGE_IDE ignore)
VIA Technologies|VT82C586B USB (SERIAL_USB usb-uhci)
VIA Technologies|VT82C586B USB (SERIAL_USB usb-uhci)
VIA Technologies|VT82C686 [Apollo Super ACPI] (unknown unknown)
VIA Technologies|VT82C686 [Apollo Super AC97/Audio] (MULTIMEDIA_AUDIO via82cxxx)Realtek|RTL-8029(AS) (NETWORK_ETHERNET ne2k-pci)

ATI|Rage 128 GL AGP 1x/2x (DISPLAY_VGA Card:ATI Rage 128 (generic))

[Patches]
linux-2.4.0-test9-reiserfs

I send my kernel ".config" as attachment.

--
Michele Iacobellis
[email protected]

Chris Wedgwood

2000-11-09 11:09 UTC #1 lore raw

On Thu, Nov 09, 2000 at 12:08:32PM +0100, Michele Iacobellis wrote:

[Summary]
No tcp connection establishment with 2.4

[Description]
I know these sites use some versions of linux:

www.libero.it
www.iol.it
www.arianna.it

and some other outside Italy.

My guess was TCP_ECN, but when I try even with this enabled it works. If it fails for you still try:

	echo 0 > /proc/sys/net/ipv4/tcp_ecn

and see if that fixes it.

--cw

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Michele Iacobellis

author

2000-11-10 09:07 UTC #2 lore raw

Thanks,
it seems to work !

--
# Eng. Michele Iacobellis
# R&D - Linux Impresa
# [email protected]
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Erik Mouw

2000-11-09 11:13 UTC #3 lore raw

In reply to Michele Iacobellis

Quoted 3 lines · Michele Iacobellis

[Summary]
No tcp connection establishment with 2.4

[snip]

Disable "Explicit congestion notification support" in the networking options. It breaks with certain Cisco firewalls.

Erik

Signature · 9 lines

J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031,  2600 GA Delft, The Netherlands
Phone: +31-15-2783635  Fax: +31-15-2781843  Email: [email protected]
WWW: http://www-ict.its.tudelft.nl/~erik/
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Michele Iacobellis

author

2000-11-10 09:08 UTC #4 lore raw

Thanks,
it seems to work !

Ragnar Hojland Espinosa

2000-11-13 17:02 UTC #5 lore raw

In reply to Michele Iacobellis

Quoted 8 lines · Erik Mouw

Quoted 3 lines · Michele Iacobellis
[Summary]
No tcp connection establishment with 2.4
[snip]
Disable "Explicit congestion notification support" in the networking options. It breaks with certain Cisco firewalls.

Actually, it does not break with cisco firewalls; cisco firewall configurations are the ones broken .. :)

Signature · 8 lines

____/|  Ragnar Højland     Freedom - Linux - OpenGL      Fingerprint  94C4B
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 =(_)=  "Thou shalt not follow the NULL pointer for      104B78C56 B72F0822
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