[netperf-talk] SCTP and Nagle's Algorithm

[Chris Lydick]

List,

I am receiving an error when attempting to disable Nagle's Algorithm.
I've read that the LKSCTP library enables Nagle by default, but I'm
unable to disable the algorithm. Any ideas? Is this more of a LKSCTP
issue? And, if I pass messages size larger than my MSS (ie. -m MSS*2),
is it possible to passively bypass it?

I'm using Ubuntu 7.04 with libsctp1 and libsctp-dev libraries.

$ ./netperf -t SCTP_STREAM -H x.x.x.x -c -C -l 30 -- -m 8952 -S 16777216
-s 16777216 -D L,R

WARNING! getaddrinfo on this platform does not accept IPPROTO_SCTP!
Please contact your vendor for a fix to this bug in getaddrinfo().
SCTP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to x.x.x.x
(x.x.x.x) port 0 AF_INET : nodelay
netperf: create_data_socket: nodelay: errno 22
..

I've dug through the code a bit, and the line in question is
nettest_bsd.c:981(ish), the setsockopt() command is returning that
error. I'm using Netperf 2.4.3.

Error 22: Invalid Argument.

Thanks,
Chris Lydick