netdev - [PATCH net-next v1 0/3] net: stmmac: Add ethtool per-queue statistic

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Message-Id: <cover.1629092894.git.vijayakannan.ayyathurai@intel.com>
Date:   Mon, 16 Aug 2021 14:15:57 +0800
From:   Vijayakannan Ayyathurai <vijayakannan.ayyathurai@...el.com>
To:     peppe.cavallaro@...com, alexandre.torgue@...s.st.com,
        joabreu@...opsys.com, davem@...emloft.net, kuba@...nel.org,
        mcoquelin.stm32@...il.com
Cc:     vee.khee.wong@...el.com, weifeng.voon@...el.com,
        vijayakannan.ayyathurai@...el.com, netdev@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next v1 0/3] net: stmmac: Add ethtool per-queue statistic

Adding generic ethtool per-queue statistic framework to display the
statistics for each rx/tx queue. In future, users can avail it to add
more per-queue specific counters. Number of rx/tx queues displayed is
depending on the available rx/tx queues in that particular MAC config
and this number is limited up to the MTL_MAX_{RX|TX}_QUEUES defined
in the driver.

Ethtool per-queue statistic display will look like below, when users
start adding more counters.

Example - 1:
 q0_tx_statA:
 q0_tx_statB:
 q0_tx_statC:
 |
 q0_tx_statX:
 .
 .
 .
 qMAX_tx_statA:
 qMAX_tx_statB:
 qMAX_tx_statC:
 |
 qMAX_tx_statX:

 q0_rx_statA:
 q0_rx_statB:
 q0_rx_statC:
 |
 q0_rx_statX:
 .
 .
 .
 qMAX_rx_statA:
 qMAX_rx_statB:
 qMAX_rx_statC:
 |
 qMAX_rx_statX:

Example - 2: Ping test using the tx queue 3.

$ tc qdisc add dev enp0s30f4 root mqprio num_tc 2 map 1 0 0 0 0 0 0 0
 0 0 0 0 0 0 0 0 queues 3@0 1@3 hw 0

Statistic before ping:
---------------------
$ ethtool -S enp0s30f4

[ snip ]
     q3_tx_pkt_n: 7916
     q3_tx_irq_n: 316
[ snip ]

$ cat /proc/interrupts

[ snip ]
 143:          0          0          0        316          0          0

         0          0  IR-PCI-MSI 499719-edge      enp0s30f4:tx-3
[ snip ]

$ ping -I enp0s30f4 192.168.1.10 -i 0.01 -c 100 > /dev/null

Statistic after ping:
---------------------
$ ethtool -S enp0s30f4

[ snip ]
     q3_tx_pkt_n: 8016
     q3_tx_irq_n: 320
[ snip ]

$ cat /proc/interrupts

[ snip ]
143:          0          0          0        320          0          0

         0          0  IR-PCI-MSI 499719-edge      enp0s30f4:tx-3
[ snip ]

Vijayakannan Ayyathurai (2):
  net: stmmac: add ethtool per-queue statistic framework
  net: stmmac: add ethtool per-queue irq statistic support

Voon Weifeng (1):
  net: stmmac: fix INTR TBU status affecting irq count statistic

 drivers/net/ethernet/stmicro/stmmac/common.h  | 13 ++++
 .../net/ethernet/stmicro/stmmac/dwmac4_lib.c  |  7 +-
 .../ethernet/stmicro/stmmac/stmmac_ethtool.c  | 67 ++++++++++++++++++-
 .../net/ethernet/stmicro/stmmac/stmmac_main.c |  5 ++
 4 files changed, 89 insertions(+), 3 deletions(-)


base-commit: e4637f621203cb482f3ddb590cfe9f65045d92a6
-- 
2.17.1