Re: Fw: [Bugme-new] [Bug 6666] New: invalid tcp socket connection to windows stacks
Andrew Morton <[EMAIL PROTECTED]> wrote:
>
> If it's buggy you get :
>
> 11:24:15.021572 d59.x-mailer.de.59959 >
> cust.static.212-90-215-40.cybernet.ch.smtp: S 2028538653:2028538653(0) win
> 5840
> (DF)
> 11:24:15.076329 cust.static.212-90-215-40.cybernet.ch.smtp >
> d59.x-mailer.de.59959: S 2328498080:2328498080(0) ack 2028538654 win 16384
> 1400,nop,wscale 0,nop,nop,timestamp 0
> 0,nop,nop,sackOK>
> 11:24:15.076352 d59.x-mailer.de.59959 >
> cust.static.212-90-215-40.cybernet.ch.smtp: . ack 1 win 46 243108503 0> (DF)
...
> ### you should get kind of this:
>
> 13:56:37.203297 d59.x-mailer.de.43286 >
> cust.static.212-90-215-40.cybernet.ch.smtp: S 1489507409:1489507409(0) win
> 5840
> (DF)
> 13:56:37.250827 cust.static.212-90-215-40.cybernet.ch.smtp >
> d59.x-mailer.de.43286: S 783498912:783498912(0) ack 1489507410 win 16384 1400,nop,wscale 0,nop,nop,timestamp 0 0,nop,nop,sackOK>
> 13:56:37.250888 d59.x-mailer.de.43286 >
> cust.static.212-90-215-40.cybernet.ch.smtp: . ack 1 win 1460
> 16627473 0> (DF)
Looks like the problem is window scaling.
Cheers,
--
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Re: [Bugme-new] [Bug 6666] New: invalid tcp socket connection to windows stacks
FIN only gets output when the connection is actually closed for sending, and that is controlled by the application not by the kernel. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Fw: [Bugme-new] [Bug 6666] New: invalid tcp socket connection to windows stacks
Begin forwarded message: Date: Thu, 8 Jun 2006 05:23:04 -0700 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [Bugme-new] [Bug ] New: invalid tcp socket connection to windows stacks http://bugzilla.kernel.org/show_bug.cgi?id= Summary: invalid tcp socket connection to windows stacks Kernel Version: 2.6.17.rc3-rc6 Status: NEW Severity: normal Owner: [EMAIL PROTECTED] Submitter: [EMAIL PROTECTED] Most recent kernel where this bug did not occur: 2.6.16 stable Distribution: none. static kernel compiled directly out of the box. Hardware Environment: dual Xeon 2.66 512kB 1024MB networks e1000 e1000 e100 dual Xeon 3.20 2048kB 2048MB networks e1000 sky2 Software Environment: problem occurs in kernel version 2.6.17rc3, 2.6.17rc6 problem does NOT occur in kernel version 2.6.16 Problem Description: The kernel sends an ack to the windows stack after sync has been replied, but theres no answere to this ack(1) and the kernel sends a FIN packet after connection timeout. Now the windowsstack sends an ack(2) and a FIN and the connections ends. It takes a while for the linux kernel to send the fin, we have shorten this in our tcpdump a bit. connections to other windowssystems i.e. throu a dsl router or other linux based computers are working as expected. It is a very! special bug which you are maybe not able to reproduce. that's why i added the ip adress to test with. As far as i know, the ip belongs to an exchange server in a home network somewhere in switzerland. You can use it freely as it acts as a public mailserver for the domain. Problem occurs independently of "Rx Polling"/"NAPI" and "Packet Split" settings. Steps to reproduce: You need TCPDUMP and NETCAT ( nc ). 1) tcpdump -w /tmp/log -s 2000 host 212.90.215.40 & 2) nc 212.90.215.40 25 If it's buggy you get : 11:24:15.021572 d59.x-mailer.de.59959 > cust.static.212-90-215-40.cybernet.ch.smtp: S 2028538653:2028538653(0) win 5840 (DF) 11:24:15.076329 cust.static.212-90-215-40.cybernet.ch.smtp > d59.x-mailer.de.59959: S 2328498080:2328498080(0) ack 2028538654 win 16384 11:24:15.076352 d59.x-mailer.de.59959 > cust.static.212-90-215-40.cybernet.ch.smtp: . ack 1 win 46 (DF) 11:24:21.926186 d59.x-mailer.de.59959 > cust.static.212-90-215-40.cybernet.ch.smtp: F 1:1(0) ack 1 win 46 (DF) 11:24:21.972106 cust.static.212-90-215-40.cybernet.ch.smtp > d59.x-mailer.de.59959: . ack 2 win 65535 (DF) 11:24:21.973980 cust.static.212-90-215-40.cybernet.ch.smtp > d59.x-mailer.de.59959: F 116:116(0) ack 2 win 65535 (DF) 11:24:21.973999 d59.x-mailer.de.59959 > cust.static.212-90-215-40.cybernet.ch.smtp: R 2028538655:2028538655(0) win 0 (DF) ### you should get kind of this: 13:56:37.203297 d59.x-mailer.de.43286 > cust.static.212-90-215-40.cybernet.ch.smtp: S 1489507409:1489507409(0) win 5840 (DF) 13:56:37.250827 cust.static.212-90-215-40.cybernet.ch.smtp > d59.x-mailer.de.43286: S 783498912:783498912(0) ack 1489507410 win 16384 13:56:37.250888 d59.x-mailer.de.43286 > cust.static.212-90-215-40.cybernet.ch.smtp: . ack 1 win 1460 (DF) 13:56:37.292170 cust.static.212-90-215-40.cybernet.ch.smtp > d59.x-mailer.de.43286: P 1:116(115) ack 1 win 65535 (DF) 13:56:37.292207 d59.x-mailer.de.43286 > cust.static.212-90-215-40.cybernet.ch.smtp: . ack 116 win 1460 (DF) 13:56:39.373383 d59.x-mailer.de.43286 > cust.static.212-90-215-40.cybernet.ch.smtp: F 1:1(0) ack 116 win 1460 (DF) 13:56:39.413075 cust.static.212-90-215-40.cybernet.ch.smtp > d59.x-mailer.de.43286: . ack 2 win 65535 (DF) 13:56:39.414449 cust.static.212-90-215-40.cybernet.ch.smtp > d59.x-mailer.de.43286: F 116:116(0) ack 2 win 65535 (DF) 13:56:39.414464 d59.x-mailer.de.43286 > cust.static.212-90-215-40.cybernet.ch.smtp: . ack 117 win 1460 (DF) --- You are receiving this mail because: --- You are on the CC list for the bug, or are watching someone who is. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
