linux-kernel - [PATCH net-next 0/2] net: ethernet: ti: am65-cpsw: use napi_complete

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Date:   Fri, 6 Aug 2021 01:55:30 +0300
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     "David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
        Jakub Kicinski <kuba@...nel.org>
CC:     <linux-kernel@...r.kernel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Lokesh Vutla <lokeshvutla@...com>,
        Eric Dumazet <edumazet@...gle.com>,
        Grygorii Strashko <grygorii.strashko@...com>
Subject: [PATCH net-next 0/2] net: ethernet: ti: am65-cpsw: use napi_complete_done() in TX completion

hi

The intention of this series is to fully enable hard irqs deferral feature
(hrtimers based HW IRQ coalescing) from Eric Dumazet [1] for TI K3 CPSW driver
by using napi_complete_done() in TX completion path, so the combination of
parameters (/sys/class/net/ethX/):
 napi_defer_hard_irqs 
 gro_flush_timeout
can be used for hard irqs deferral.

The Patch 1 is required before enabling hard irqs deferral feature to avoid
"Unbalanced enable" issue if gro_flush_timeout is configured while
(napi_defer_hard_irqs == 0).

It's a bit sad that it can not be configured per RX/TX separately.

[1] https://lore.kernel.org/netdev/20200422161329.56026-1-edumazet@google.com/
Grygorii Strashko (1):
  net: ethernet: ti: am65-cpsw: use napi_complete_done() in TX
    completion

Vignesh Raghavendra (1):
  net: ti: am65-cpsw-nuss: fix RX IRQ state after .ndo_stop()

 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 23 ++++++++++++++++-------
 drivers/net/ethernet/ti/am65-cpsw-nuss.h |  2 ++
 2 files changed, 18 insertions(+), 7 deletions(-)

-- 
2.17.1