linux-kernel - [PATCH net-next v2 0/2] net: lan966x: Improve TX/RX of frames from/to CPU

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Date:   Fri, 17 Mar 2023 16:27:11 +0100
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <richardcochran@...il.com>,
        <UNGLinuxDriver@...rochip.com>, <david.laight@...lab.com>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [PATCH net-next v2 0/2] net: lan966x: Improve TX/RX of frames from/to CPU

The first patch of this series improves the RX side. As it seems to be
an expensive operation to read the RX timestamp for every frame, then
read it only if it is required. This will give an improvement of ~70mbit
on the RX side.
The second patch stops using the packing library. This improves mostly
the TX side as this library is used to set diffent bits in the IFH. If
this library is replaced with a more simple/shorter implementation,
this gives an improvement of more than 100mbit on TX side.
All the measurements were done using iperf3.

v1->v2:
- update lan966x_ifh_set to set the bytes and not each bit individually

Horatiu Vultur (2):
  net: lan966x: Don't read RX timestamp if not needed
  net: lan966x: Stop using packing library

 .../net/ethernet/microchip/lan966x/Kconfig    |  1 -
 .../ethernet/microchip/lan966x/lan966x_fdma.c |  2 +-
 .../ethernet/microchip/lan966x/lan966x_main.c | 76 +++++++++++++------
 .../ethernet/microchip/lan966x/lan966x_main.h |  5 +-
 .../ethernet/microchip/lan966x/lan966x_ptp.c  | 20 ++---
 5 files changed, 65 insertions(+), 39 deletions(-)

-- 
2.38.0