svn commit: r266757 - in head/sys: conf dev/cxgbe dev/cxgbe/common modules/cxgbe/if_cxgbe

[Bjoern A. Zeeb]

On 27 May 2014, at 18:18 , Navdeep Parhar <np at 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 own
>  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 port
>  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.


Really nice :-)   Thanks a lot for getting it into the tree.


— 
Bjoern A. Zeeb             "Come on. Learn, goddamn it.", WarGames, 1983