Date: Mon, 10 Feb 2014 17:26:40 +0200 From: Tugrul Erdogan <h.tugrul.erdogan@gmail.com> To: freebsd-drivers@freebsd.org Subject: Intel 10g ixgbe NIC driver "TUNABLE_INT" and sysctl argument inconsistency Message-ID: <CA%2Bwhn7Rbi6X7wc%2BRfkfi8UmQ0W1nJYee%2BaN50=H9WRDjeVAaZA@mail.gmail.com>
index | next in thread | raw e-mail
Hi, I am using Intel 10g ixgbe network interface NIC on 10.0. While I was tuning the NIC for increasinf the netwoking performance, I noticed that like "hw.ix.rxd" "hw.ix.rxd" "hw.ix.rx_process_limit" sysctl tunings are can not be done. The sysctl calls are not returning any error message. When I look at the source code of ixgbe driver ( source_path/dev/ixgbe/ixgbe.c ), I found the "TUNABLE_INT" macro calls. The macro taking "hw.ixgbe.*" like arguments but the sysctl expects "hw.ix.*" like arguments. So I changed all of the "hw.ixgbe.*" arguments to "hw.ix.*" which are inputs for "TUNABLE_INT" macro. Then I compiled the driver code and now I am using the sysctl "hw.ix.*" calls sucessfully I think. I want to consult you at this point, why should the original source code be inconsistent with sysctl implementation? Is it only a bug or I have done a change which must not be changed? Thanks, Tugrulhelp
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CA%2Bwhn7Rbi6X7wc%2BRfkfi8UmQ0W1nJYee%2BaN50=H9WRDjeVAaZA>