[dpdk-dev] [RFC v1 0/3] show the Rx/Tx burst description field

Haiyue Wang haiyue.wang at intel.com
Mon Aug 12 16:15:02 CEST 2019


Since some PMDs have multi-path for Rx/Tx, FD.io VPP will tell you in
the Debug CLI what rx/tx function is being used:
	#show hardware-interface
	 
	 tx burst function: ice_xmit_pkts
	 rx burst function: ice_recv_scattered_pkts

But if the tx/rx is static, then 'dladdr' will return nil:

	 tx burst function: (nil) │······················
	 rx burst function: (nil) │······················

For making things consistent and gracefull, we introduce an new string
field to describe the Rx/Tx burst information. This is vendor-neutral,
it is used to identify the Rx/Tx burst selection if the PMD has more
than one.  

If a PMD supports this, then rxqinfo/txqinfo->burst_info[0] != '\0'.

This is for net/ice PMD result.

testpmd> show rxq info 0 0

********************* Infos for port 0 , RX queue 0  *********************
Mempool: mbuf_pool_socket_0
RX prefetch threshold: 0
RX host threshold: 0
RX writeback threshold: 0
RX free threshold: 32
RX drop packets: off
RX deferred start: off
RX scattered packets: on
Number of RXDs: 1024
Burst description: AVX2 Vector Scattered Rx <------------ NEW

testpmd> show txq info 0 0

********************* Infos for port 0 , TX queue 0  *********************
TX prefetch threshold: 32
TX host threshold: 0
TX writeback threshold: 0
TX RS threshold: 32
TX free threshold: 32
TX deferred start: off
Number of TXDs: 1024
Burst description: AVX2 Vector Tx <------------ NEW

Haiyue Wang (3):
  ethdev: add the Rx/Tx burst description field in queue information
  testpmd: show the Rx/Tx burst description field in queue
  net/ice: support the Rx/Tx burst description field in queue
    information

 app/test-pmd/config.c          |  2 ++
 drivers/net/ice/ice_rxtx.c     | 49 ++++++++++++++++++++++++++++++++++++++++++
 lib/librte_ethdev/rte_ethdev.h |  7 ++++++
 3 files changed, 58 insertions(+)

-- 
2.7.4



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