Date: Fri, 07 Jul 2006 07:40:04 -0400 From: Randall Stewart <rrs@cisco.com> To: "George V. Neville-Neil" <gnn@neville-neil.com> Cc: freebsd-net@freebsd.org, Marcin Jessa <lists@yazzy.org> Subject: Re: SCTP Message-ID: <44AE4814.2020706@cisco.com> In-Reply-To: <m2wtaril9n.wl%gnn@neville-neil.com> References: <44A552FA.2030302@cisco.com> <m2u061ogp3.wl%gnn@neville-neil.com> <20060703094806.689f33ae@marcin> <44A90031.9010308@cisco.com> <m2wtaril9n.wl%gnn@neville-neil.com>
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George V. Neville-Neil wrote: > > I already sent the pointer to my version of NetPIPE (the pounder you > mention) and their new release should have SCTP in it by default. > > Later, > George > Ok, no doc's just stuff http://www.sctp.org/app.tar.bz2 Un tar into a directory (it creates several) do a gmake and you will have in the apps/FreeBSD subdir: block_test dump_pegs prtcwndlog client_manyconn getcwndlog prtcwndlog_ntohl cmp_client interest_client sctp_test_app cmp_recvfile interest_server server cmp_sendfile m_cmp_client tcp_client cmp_server peel_client tcp_server data_sorter peel_server tsctp bash-stewlap: some ones of interest: cmp_server m_cmp_client cmp_server takes an arg -p port and -s for SCTP and -t for TCP m_cmp_client takes many argumets... -e error -f file -h host -p port -M limit -e error .. is just a text string that goes in the out file.. put -e 0.0 -f file .. is an input list of transfers (see below).. suply your file name -h 10.1.1.1 (host you ran cmp_server on) -p port (port you ran cmp_server on) if you add a -t, you do TCP connections only. If you add a -s you do SCTP connections only.. by default it will try both.. File format is: # Control file needs # sizetos:blksize:snd_buf:recv_buf\n 157000000:157:0:0 158000000:158:0:0 xx yy in the direectory are examples.. First arg is size of transfer second is record size, third and fourth are send/recv buf size changes -- 0 is don't touch. This generates a file... xx.data (xx is the file you input)... this can actually be used with a data_sorter program to plot graphs... sctp_test_app Is a general purpose test app that can do LOTS of things. It gives you a prompt and you can type help to it.. args to it are -m myport -p first-dest-port -h first-dest-host But I will let you type help for fun... and learning .. it does use a readline type syntax. and requires libreadline.so/.a etc.. The rest are migrant test apps we have built over the last 5 years.. some simple.. some complex.. getcwndlog/prtcwndlog is a instrumenting utility that works with the options in kernel config #options SCTP_LOG_MAXBURST #options SCTP_STAT_LOGGING #options SCTP_CWND_LOGGING #options SCTP_CWND_MONITOR #options SCTP_BLK_LOGGING #options SCTP_STR_LOGGING #options SCTP_FR_LOGGING #options SCTP_MAP_LOGGING #options SCTP_SACK_LOGGING #options SCTP_LOCK_LOGGING #options SCTP_RTTVAR_LOGGING #options SCTP_SB_LOGGING #options SCTP_WITH_NO_CSUM #options SCTP_EARLYFR_LOGGING #options SCTP_NAGLE_LOGGING You turn on option SCTP_STAT_LOGGING and then add your favorite type of logging... for example to watch cwnd option SCTP_CWND_LOGGING Now this creates an 80k entry array that the getcwndlog will pull. prtcwndlog will display the log.. I don't recommend this for production kernels.. but it sure is nice for debugging and poking around :-D The rest I will let you explore.. no apologies though for the shape of the hacked together code :-) R -- Randall Stewart NSSTG - Cisco Systems Inc. 803-345-0369 <or> 815-342-5222 (cell)
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