Date: Wed, 28 May 2014 02:36:54 +0200 From: Luigi Rizzo <rizzo@iet.unipi.it> To: Navdeep Parhar <np@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r266757 - in head/sys: conf dev/cxgbe dev/cxgbe/common modules/cxgbe/if_cxgbe Message-ID: <CA%2BhQ2%2BgQ5JYUBrPwbSzByCLJ_eExY=VJi161MkC2WnG_5iusNA@mail.gmail.com> In-Reply-To: <201405271818.s4RIIff9045225@svn.freebsd.org> References: <201405271818.s4RIIff9045225@svn.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, May 27, 2014 at 8:18 PM, Navdeep Parhar <np@freebsd.org> wrote: > Author: np > Date: Tue May 27 18:18:41 2014 > New Revision: 266757 > URL: http://svnweb.freebsd.org/changeset/base/266757 > > Log: > cxgbe(4): netmap support for Terminator 5 (T5) based 10G/40G cards. > Netmap gets its own hardware-assisted virtual interface and won't take > over or disrupt the "normal" interface in any way. You can use both > simultaneously. > > For kernels with DEV_NETMAP, cxgbe(4) carves out an ncxl<N> interface > (note the 'n' prefix) in the hardware to accompany each cxl<N> > interface. These two ifnet's per port share the same wire but really > are separate interfaces in the hardware and software. Each gets its ow= n > L2 MAC addresses (unicast and multicast), MTU, checksum caps, etc. You > should run netmap on the 'n' interfaces only, that's what they are for. > > With this, pkt-gen is able to transmit > 45Mpps out of a single 40G por= t > =E2=80=8Band just for the records, this is with 1 core in userland. Very cool. Do you have an easy way to check what kind of throughput you get when the netmap interface has one hw queue ? cheers luigi of a T580 card. 2 port tx is at ~56Mpps total (28M + 28M) as of now. > Single port receive is at 33Mpps but this is very much a work in > progress. I expect it to be closer to 40Mpps once done. In any case > the current effort can already saturate multiple 10G ports of a T5 card > at the smallest legal packet size. T4 gear is totally untested. > > trantor:~# ./pkt-gen -i ncxl0 -f tx -D 00:07:43:ab:cd:ef > 881.952141 main [1621] interface is ncxl0 > 881.952250 extract_ip_range [275] range is 10.0.0.1:0 to 10.0.0.1:0 > 881.952253 extract_ip_range [275] range is 10.1.0.1:0 to 10.1.0.1:0 > 881.962540 main [1804] mapped 334980KB at 0x801dff000 > Sending on netmap:ncxl0: 4 queues, 1 threads and 1 cpus. > 10.0.0.1 -> 10.1.0.1 (00:00:00:00:00:00 -> 00:07:43:ab:cd:ef) > 881.962562 main [1882] Sending 512 packets every 0.000000000 s > 881.962563 main [1884] Wait 2 secs for phy reset > 884.088516 main [1886] Ready... > 884.088535 nm_open [457] overriding ifname ncxl0 ringid 0x0 flags 0x1 > 884.088607 sender_body [996] start > 884.093246 sender_body [1064] drop copy > 885.090435 main_thread [1418] 45206353 pps (45289533 pkts in 1001840 > usec) > 886.091600 main_thread [1418] 45322792 pps (45375593 pkts in 1001165 > usec) > 887.092435 main_thread [1418] 45313992 pps (45351784 pkts in 1000834 > usec) > 888.094434 main_thread [1418] 45315765 pps (45406397 pkts in 1002000 > usec) > 889.095434 main_thread [1418] 45333218 pps (45378551 pkts in 1001000 > usec) > 890.097434 main_thread [1418] 45315247 pps (45405877 pkts in 1002000 > usec) > 891.099434 main_thread [1418] 45326515 pps (45417168 pkts in 1002000 > usec) > 892.101434 main_thread [1418] 45333039 pps (45423705 pkts in 1002000 > usec) > 893.103434 main_thread [1418] 45324105 pps (45414708 pkts in 1001999 > usec) > 894.105434 main_thread [1418] 45318042 pps (45408723 pkts in 1002001 > usec) > 895.106434 main_thread [1418] 45332430 pps (45377762 pkts in 1001000 > usec) > 896.107434 main_thread [1418] 45338072 pps (45383410 pkts in 1001000 > usec) > ... > > Relnotes: Yes > Sponsored by: Chelsio Communications. > > Added: > head/sys/dev/cxgbe/t4_netmap.c (contents, props changed) > Modified: > head/sys/conf/files > head/sys/dev/cxgbe/adapter.h > head/sys/dev/cxgbe/common/common.h > head/sys/dev/cxgbe/common/t4_hw.c > head/sys/dev/cxgbe/t4_main.c > head/sys/dev/cxgbe/t4_sge.c > head/sys/modules/cxgbe/if_cxgbe/Makefile > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CA%2BhQ2%2BgQ5JYUBrPwbSzByCLJ_eExY=VJi161MkC2WnG_5iusNA>