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Re: [Lksctp-developers] SCTP does not respond COOKIE_ECHO
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From: Vlad Y. <vla...@hp...> - 2009-12-28 19:18:56
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Zhang, Long (Roger) wrote: > Hi > > Attached is my pcap file. Check packet 1403 to 1407. > > 2510:0:0:333::2 is client IP > > 2512:0:0:353::1 is my host IP The list server will strip out very attachments like packet captures. Can you post a link instead? You could also post a text decoding if the link method doesn't work, but looking at raw captures is usually the best way to diagnose a problem. The other item that may contribute to this problem is the existence of SCTP-AUTH in your kernel. There was a bug in the SCTP handshake handling when one end reported SCTP_AUTH as supported while the other did not. -vlad > > Thanks, > Roger > >> -----Original Message----- >> From: Wei Yongjun [mailto:yj...@cn...] >> Sent: Friday, December 25, 2009 1:26 PM >> To: Zhang, Long (Roger) >> Cc: lks...@li... >> Subject: Re: [Lksctp-developers] SCTP does not respond COOKIE_ECHO >> >> >> >> Zhang, Long (Roger) wrote: >>> Hi, >>> >>> I saw a SCTP handshake problem on my Linux. My host is SCTP server, >> when the client connect to my host, it sends out INIT, my host responds >> INIT_ACK, client then send COOKIE_ECHO, but my host does not send >> COOKIE_ACK. Below is my host sctp info. >>> cmd> modinfo sctp >>> filename: /lib/modules/2.6.24-19-generic/kernel/net/sctp/sctp.ko >>> license: GPL >>> description: Support for the SCTP protocol (RFC2960) >>> author: Linux Kernel SCTP developers <lksctp- >> dev...@li...> >>> alias: net-pf-10-proto-132 >>> alias: net-pf-2-proto-132 >>> srcversion: 27DF6A83CA458A18F0C5AFF >>> depends: ipv6 >>> vermagic: 2.6.24-19-generic SMP mod_unload >>> >>> cmd> ll /lib/modules/2.6.24-19-generic/kernel/net/sctp/sctp.ko >>> -rw-r--r-- 1 root root 318400 2008-06-18 11:49 /lib/modules/2.6.24-19- >> generic/kernel/net/sctp/sctp.ko >>> cmd> uname -a >>> Linux ih6d2-iota2 2.6.24-19-generic #1 SMP Wed Jun 18 14:15:37 UTC 2008 >> x86_64 GNU/Linux >>> Check http://lksctp.sourceforge.net/ChangeLog, found for "lksctp-2.6.24- >> 1.0.8: Fri Feb 01 14:55:00 EST 2008", there is a fix "K:NA Abort >> on COOKIE-ECHO if backlog is exceeded.". Not sure this problem is fixed or >> not. Also I can not get my sctp version from modinfo. I do not know >> whether the fix is contained in my sctp kernel if it is fixed. >>> Also I found from pcap file, there are a lot of INIT and ABORT from >> client before this handshake failure. Can it cause backlog exceeded? >> Can you share your pcap file? >> >>> Thanks, >>> Roger >>> >>> >>> ------------------------------------------------------------------------ >> ------ >>> This SF.Net email is sponsored by the Verizon Developer Community >>> Take advantage of Verizon's best-in-class app development support >>> A streamlined, 14 day to market process makes app distribution fast and >> easy >>> Join now and get one step closer to millions of Verizon customers >>> http://p.sf.net/sfu/verizon-dev2dev >>> _______________________________________________ >>> Lksctp-developers mailing list >>> Lks...@li... >>> https://lists.sourceforge.net/lists/listinfo/lksctp-developers >>> >>> >>> >>> >>> ------------------------------------------------------------------------ >>> >>> ------------------------------------------------------------------------------ >>> This SF.Net email is sponsored by the Verizon Developer Community >>> Take advantage of Verizon's best-in-class app development support >>> A streamlined, 14 day to market process makes app distribution fast and easy >>> Join now and get one step closer to millions of Verizon customers >>> http://p.sf.net/sfu/verizon-dev2dev >>> >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> Lksctp-developers mailing list >>> Lks...@li... >>> https://lists.sourceforge.net/lists/listinfo/lksctp-developers |