[dpdk-dev] [PATCH v2 0/2] net/softnic: sw fall-back for traffic management

Jasvinder Singh jasvinder.singh at intel.com
Mon Jun 26 18:43:32 CEST 2017

The SoftNIC PMD provides SW fall-back option for the NICs not supporting
the Traffic Management (TM) features. 

SoftNIC PMD overview:
- The SW fall-back is based on the existing librte_sched DPDK library.
- The TM-agnostic port (the underlay device) is wrapped into a TM-aware
  softnic port (the overlay device).
- Once the overlay device (virtual device) is created, the configuration
  of the underlay device is taking place through the overlay device.
- The SoftNIC PMD is generic, i.e. it works for any underlay device PMD
  that implements the ethdev API.

Similarly to Ring PMD, the SoftNIC virtual device can be created in two
different ways:
1. Through EAL command line (--vdev option) 
2. Through the rte_eth_softnic_create() API function called by the

SoftNIC PMD params:
- iface (mandatory): the ethdev port name (i.e. PCI address or vdev name)
  for the underlay device
- txq_id (optional, default = 0): tx queue id of the underlay device
- deq_bsz (optional, default = 24): traffic manager dequeue burst size
- Example:  --vdev 'net_softnic0,iface=0000:04:00.1,txq_id=0,deq_bsz=28'

SoftNIC PMD build instructions:
- To build SoftNIC PMD, the following parameter needs to be set on
  config/common_base file: CONFIG_RTE_LIBRTE_PMD_SOFTNIC=y
- The SoftNIC PMD depends on the TM API [1] and therefore is initially
targeted for the tm-next repository

Patch 1 adds softnic device PMD for traffic management.
Patch 2 adds traffic management ops to the softnic device suggested in
generic ethdev API for traffic management[1].

[1] TM API version 6:  

Jasvinder Singh (2):
  net/softnic: add softnic PMD for traffic management
  net/softnic: add traffic management ops

 MAINTAINERS                                     |    5 +
 config/common_base                              |    5 +
 drivers/net/Makefile                            |    5 +
 drivers/net/softnic/Makefile                    |   58 ++
 drivers/net/softnic/rte_eth_softnic.c           |  580 ++++++++++++
 drivers/net/softnic/rte_eth_softnic.h           |   99 ++
 drivers/net/softnic/rte_eth_softnic_default.c   | 1108 ++++++++++++++++++++++
 drivers/net/softnic/rte_eth_softnic_internals.h |  148 +++
 drivers/net/softnic/rte_eth_softnic_tm.c        | 1145 +++++++++++++++++++++++
 drivers/net/softnic/rte_eth_softnic_version.map |    7 +
 mk/rte.app.mk                                   |    5 +-
 11 files changed, 3164 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/softnic/Makefile
 create mode 100644 drivers/net/softnic/rte_eth_softnic.c
 create mode 100644 drivers/net/softnic/rte_eth_softnic.h
 create mode 100644 drivers/net/softnic/rte_eth_softnic_default.c
 create mode 100644 drivers/net/softnic/rte_eth_softnic_internals.h
 create mode 100644 drivers/net/softnic/rte_eth_softnic_tm.c
 create mode 100644 drivers/net/softnic/rte_eth_softnic_version.map


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