[dpdk-dev] [PATCH v5 0/4] Use common Linux tools to control DPDK ports

Ferruh Yigit ferruh.yigit at intel.com
Wed Mar 9 12:41:25 CET 2016


This patch sent to keep record of latest status of the work.


This work is to make DPDK ports more visible and to enable using common
Linux tools to configure DPDK ports.

Patch is based on KNI but contains only control functionality of it,
also this patch does not include any Linux kernel network driver as
part of it.

Basically with the help of a kernel module (KCP), virtual Linux network
interfaces named as "dpdk$" are created per DPDK port, control messages
sent to these virtual interfaces are forwarded to DPDK, and response
sent back to Linux application.

Virtual interfaces created when DPDK application started and destroyed
automatically when DPDK application terminated.

Communication between kernel-space and DPDK done using netlink socket.

In long term this patch intends to replace the KNI and KNI will be
depreciated.

v5:
* Use unsigned primitive types as possible

v4:
* Kernel side changes:
  * Remove logging helper macros, use pr_fmt
  * Seperate log msg for timeout and error
* Control library changes:
  * Add ethtool_get_settings as dummy

v3:
* Kernel side changes:
  * Devices are not up by default
  * Add enable/disable promisc, allmulti support
  * Increase timeout to 500ms and print log when a command timedout
* Control library changes:
  * Use librte_ethtool
  * Don't create interfaces for virtual PMDs
  * Add a new API ...msg_exist() to support port based locking
  * Add enable/disable promisc, allmulti support
* Example changes:
  * Use blocking mode control interface processing, instead of poll mode

v2:
* Use rtnetlink to create interfaces
* Add more ethtool support: get/set ringparam, set pauseparam.
* fix ethtool get/set eeprom
* lots of minor updates, enhancements in the code


Samples:

$ ifconfig
dpdk0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::92e2:baff:fe0e:49b8  prefixlen 64  scopeid 0x20<link>
        ether 90:e2:ba:0e:49:b8  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

dpdk1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::21b:21ff:fe76:fa20  prefixlen 64  scopeid 0x20<link>
        ether 00:1b:21:76:fa:20  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

After some traffic on port 0:

$ ifconfig
dpdk0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::92e2:baff:fe0e:49b8  prefixlen 64  scopeid 0x20<link>
        ether 90:e2:ba:0e:49:b8  txqueuelen 1000  (Ethernet)
        RX packets 26117404  bytes 1671514264 (1.5 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 27897889  bytes 1785463944 (1.6 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


$ ethtool -i dpdk0
driver: rte_ixgbe_pmd
version: DPDK 16.04.0-rc0
firmware-version: 
expansion-rom-version: 
bus-info: 0000:08:00.0
supports-statistics: no
supports-test: no
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no


$ ethtool -e dpdk0 offset 20 length 10
Offset          Values
------          ------
0x0014:         b7 01 bf 01 c7 01 cf 01 09 02 


$ ip l show dpdk0
44: dpdk0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000
    link/ether 90:e2:ba:0e:49:b8 brd ff:ff:ff:ff:ff:ff

$ ip l set dpdk0 addr 90:e2:ba:0e:49:b9

$ ip l show dpdk0
44: dpdk0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000
    link/ether 90:e2:ba:0e:49:b9 brd ff:ff:ff:ff:ff:ff


Ferruh Yigit (4):
  lib/librte_ethtool: move librte_ethtool form examples to lib folder
  kcp: add kernel control path kernel module
  rte_ctrl_if: add control interface library
  examples/ethtool: add control interface support to the application

 MAINTAINERS                                        |   5 +
 config/common_base                                 |  12 +
 config/common_linuxapp                             |   3 +
 doc/api/doxy-api-index.md                          |   4 +-
 doc/api/doxy-api.conf                              |   2 +
 doc/api/examples.dox                               |   5 +-
 doc/guides/prog_guide/ctrl_if_lib.rst              |  52 ++
 doc/guides/prog_guide/ethtool_lib.rst              |  62 ++
 doc/guides/prog_guide/index.rst                    |   4 +-
 doc/guides/rel_notes/release_16_04.rst             |   9 +
 doc/guides/sample_app_ug/ethtool.rst               |  77 +-
 examples/ethtool/Makefile                          |  24 +-
 examples/ethtool/ethapp.c                          | 873 +++++++++++++++++++++
 examples/ethtool/ethapp.h                          |  41 +
 examples/ethtool/ethtool-app/Makefile              |  54 --
 examples/ethtool/ethtool-app/ethapp.c              | 873 ---------------------
 examples/ethtool/ethtool-app/ethapp.h              |  41 -
 examples/ethtool/ethtool-app/main.c                | 305 -------
 examples/ethtool/lib/Makefile                      |  57 --
 examples/ethtool/lib/rte_ethtool.c                 | 423 ----------
 examples/ethtool/lib/rte_ethtool.h                 | 410 ----------
 examples/ethtool/main.c                            | 332 ++++++++
 lib/Makefile                                       |   4 +-
 lib/librte_ctrl_if/Makefile                        |  58 ++
 lib/librte_ctrl_if/rte_ctrl_ethtool.c              | 391 +++++++++
 lib/librte_ctrl_if/rte_ctrl_ethtool.h              |  54 ++
 lib/librte_ctrl_if/rte_ctrl_if.c                   | 395 ++++++++++
 lib/librte_ctrl_if/rte_ctrl_if.h                   | 129 +++
 lib/librte_ctrl_if/rte_ctrl_if_version.map         |  10 +
 lib/librte_ctrl_if/rte_nl.c                        | 313 ++++++++
 lib/librte_ctrl_if/rte_nl.h                        |  50 ++
 lib/librte_eal/common/include/rte_log.h            |   3 +-
 lib/librte_eal/linuxapp/Makefile                   |   3 +-
 lib/librte_eal/linuxapp/eal/Makefile               |   3 +-
 .../linuxapp/eal/include/exec-env/rte_kcp_common.h | 109 +++
 lib/librte_eal/linuxapp/kcp/Makefile               |  57 ++
 lib/librte_eal/linuxapp/kcp/kcp_dev.h              |  56 ++
 lib/librte_eal/linuxapp/kcp/kcp_ethtool.c          | 293 +++++++
 lib/librte_eal/linuxapp/kcp/kcp_net.c              | 219 ++++++
 lib/librte_eal/linuxapp/kcp/kcp_nl.c               | 220 ++++++
 lib/librte_ethtool/Makefile                        |  57 ++
 lib/librte_ethtool/rte_ethtool.c                   | 423 ++++++++++
 lib/librte_ethtool/rte_ethtool.h                   | 413 ++++++++++
 lib/librte_ethtool/rte_ethtool_version.map         |  28 +
 mk/rte.app.mk                                      |   4 +-
 45 files changed, 4746 insertions(+), 2214 deletions(-)
 create mode 100644 doc/guides/prog_guide/ctrl_if_lib.rst
 create mode 100644 doc/guides/prog_guide/ethtool_lib.rst
 create mode 100644 examples/ethtool/ethapp.c
 create mode 100644 examples/ethtool/ethapp.h
 delete mode 100644 examples/ethtool/ethtool-app/Makefile
 delete mode 100644 examples/ethtool/ethtool-app/ethapp.c
 delete mode 100644 examples/ethtool/ethtool-app/ethapp.h
 delete mode 100644 examples/ethtool/ethtool-app/main.c
 delete mode 100644 examples/ethtool/lib/Makefile
 delete mode 100644 examples/ethtool/lib/rte_ethtool.c
 delete mode 100644 examples/ethtool/lib/rte_ethtool.h
 create mode 100644 examples/ethtool/main.c
 create mode 100644 lib/librte_ctrl_if/Makefile
 create mode 100644 lib/librte_ctrl_if/rte_ctrl_ethtool.c
 create mode 100644 lib/librte_ctrl_if/rte_ctrl_ethtool.h
 create mode 100644 lib/librte_ctrl_if/rte_ctrl_if.c
 create mode 100644 lib/librte_ctrl_if/rte_ctrl_if.h
 create mode 100644 lib/librte_ctrl_if/rte_ctrl_if_version.map
 create mode 100644 lib/librte_ctrl_if/rte_nl.c
 create mode 100644 lib/librte_ctrl_if/rte_nl.h
 create mode 100644 lib/librte_eal/linuxapp/eal/include/exec-env/rte_kcp_common.h
 create mode 100644 lib/librte_eal/linuxapp/kcp/Makefile
 create mode 100644 lib/librte_eal/linuxapp/kcp/kcp_dev.h
 create mode 100644 lib/librte_eal/linuxapp/kcp/kcp_ethtool.c
 create mode 100644 lib/librte_eal/linuxapp/kcp/kcp_net.c
 create mode 100644 lib/librte_eal/linuxapp/kcp/kcp_nl.c
 create mode 100644 lib/librte_ethtool/Makefile
 create mode 100644 lib/librte_ethtool/rte_ethtool.c
 create mode 100644 lib/librte_ethtool/rte_ethtool.h
 create mode 100644 lib/librte_ethtool/rte_ethtool_version.map

-- 
2.5.0



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