tree f9baf255a980652c0df2cd126b4d8c700780f052
parent 7ec681fdffe1b6dbbf81f7d787df40a4a71f64c9
author Alexey Kodanev <alexey.kodanev@oracle.com> 1481730117 +0300
committer Alexey Kodanev <alexey.kodanev@oracle.com> 1485345635 +0300

netstress.c: change default setup of sysctl parameters

* Allow 'netstress' to use whatever is set in tcp_fastopen sysctl
  parameter. There are several advantages to do this:
  a. It allows to test default configuration in kernel;
  b. We can control this parameter externally and avoid races
     when server/client runs on the same machine;
  c. Simplifies code.

* Introduce new parameter '-t x' (instead of '-O') where x is the new
  value for tcp_fastopen sysctl parameter.

* Enable fastopen API only if '-f' option set.

* Remove 'run_force' parameter '-F'. It didn't do anything useful,
  instead, invoke tst_require_root() only if we're going to update
  sysctl parameter.

* Update tcp_fastopen test with new options ('-t' & '-f').

Additional fixes:

* Set SO_REUSEADDR option before bind in server.

* Remove linger option and consolidate setting busy_poll socket option
  into one function: init_socket_opts().

* Move setting tcp_tw_reuse to client side code.

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>