Date: Mon, 5 Sep 2011 15:51:32 +0900 From: Takuya ASADA <syuu@dokukino.com> To: jfv@freebsd.org, freebsd-net@freebsd.org Subject: Adding Flow Director sysctls to ixgbe(4) Message-ID: <CALG4x-W99OZxd=1ZDvW4=MBqeE3RPOazc7jc_3O30X-Pou3k8Q@mail.gmail.com>
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--0016e6d266028c9aa204ac2c26c4 Content-Type: text/plain; charset=UTF-8 Hi, I implemented Ethernet Flow Director sysctls to ixgbe(4), here's a detail: - Adding removing signature filter On linux version of ixgbe driver, it has ability to set/remove perfect filter from userland using ethtool command. I implemented similar feature, but on sysctl, and not perfect filter but signature filter(which means hash collision may occurs). Following command adds a signature filter on ix0 for 10.0.0.2:47390/tcp -> 10.0.0.1:22/tcp, queueing Rx queue 10. $ sysctl dev.ix.0.set_fdir_signature="tcpv4 10.0.0.2:47390 10.0.0.1:22 10" Clearing a filter takes similar values but not includes queue number: $ sysctl dev.ix.0.clear_fdir_signature="tcpv4 10.0.0.2:47390 10.0.0.1:22" - Statistics of Flow Director These sysctls poll fdir statistics register: dev.ix.*.mac_stats.fdirfree_free dev.ix.*.mac_stats.fdirfree_coll dev.ix.*.mac_stats.fdirustat_add dev.ix.*.mac_stats.fdirustat_remove dev.ix.*.mac_stats.fdirfstat_fadd dev.ix.*.mac_stats.fdirfstat_fremove dev.ix.*.mac_stats.fdirmatch dev.ix.*.mac_stats.fdirmiss And I divided "#ifdef IXGBE_FDIR" to "#ifdef IXGBE_FDIR" and "#ifdef IXGBE_FDIR_ATR". If only IXGBE_FDIR is defined, only set_fdir_signature sysctl sets signature filters. If IXGBE_FDIR and IXGBE_FDIR_ATR are defined, ixgbe_atr also sets signature filters automatically. Which means even if you set a filter with specific queue number via sysctl, ixgbe_atr will override the queue number. --0016e6d266028c9aa204ac2c26c4 Content-Type: text/x-patch; charset=US-ASCII; name="ixgbe-head-signature.diff" Content-Disposition: attachment; filename="ixgbe-head-signature.diff" Content-Transfer-Encoding: base64 X-Attachment-Id: f_gs71oy620 SW5kZXg6IGl4Z2JlLmMKPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gaXhnYmUuYwkocmV2aXNpb24gMjI1MDEzKQor KysgaXhnYmUuYwkod29ya2luZyBjb3B5KQpAQCAtMzcsNiArMzcsMTEgQEAKICNpbmNsdWRlICJv cHRfaW5ldDYuaCIKICNlbmRpZgogCisvKgorI2RlZmluZSBJWEdCRV9GRElSIDEKKyNkZWZpbmUg SVhHQkVfRkRJUl9BVFIgMQorKi8KKwogI2luY2x1ZGUgIml4Z2JlLmgiCiAKIC8qKioqKioqKioq KioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq KioKQEAgLTE1Myw2ICsxNTgsOCBAQAogc3RhdGljIGludCAgICAgIGl4Z2JlX3htaXQoc3RydWN0 IHR4X3JpbmcgKiwgc3RydWN0IG1idWYgKiopOwogc3RhdGljIGludAlpeGdiZV9zZXRfZmxvd2Nu 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