linux-kernel - Re: [PATCH net-next v2 0/4] net: lan966x: Add support for FDMA

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Message-ID: <c8cfb46356ab32421fbe7c0cdf4168a0@walle.cc>
Date:   Fri, 18 Mar 2022 21:55:10 +0100
From:   Michael Walle <michael@...le.cc>
To:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        davem@...emloft.net, kuba@...nel.org, UNGLinuxDriver@...rochip.com
Subject: Re: [PATCH net-next v2 0/4] net: lan966x: Add support for FDMA

Am 2022-03-18 21:47, schrieb Horatiu Vultur:
> Currently when injecting or extracting a frame from CPU, the frame
> is given to the HW each word at a time. There is another way to
> inject/extract frames from CPU using FDMA(Frame Direct Memory Access).
> In this way the entire frame is given to the HW. This improves both
> RX and TX bitrate.
> 
> v1->v2:
> - fix typo in commit message in last patch
> - remove first patch as the changes are already there
> - make sure that there is space in skb to put the FCS
> - move skb_tx_timestamp closer to the handover of the frame to the HW
> 
> Horatiu Vultur (4):
>   net: lan966x: Add registers that are used for FDMA.
>   net: lan966x: Expose functions that are needed by FDMA
>   net: lan966x: Add FDMA functionality
>   net: lan966x: Update FDMA to change MTU.
> 
>  .../net/ethernet/microchip/lan966x/Makefile   |   2 +-
>  .../ethernet/microchip/lan966x/lan966x_fdma.c | 775 ++++++++++++++++++
>  .../ethernet/microchip/lan966x/lan966x_main.c |  44 +-
>  .../ethernet/microchip/lan966x/lan966x_main.h | 120 +++
>  .../ethernet/microchip/lan966x/lan966x_port.c |   3 +
>  .../ethernet/microchip/lan966x/lan966x_regs.h | 106 +++
>  6 files changed, 1038 insertions(+), 12 deletions(-)
>  create mode 100644 
> drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c

Tested-by: Michael Walle <michael@...le.cc>

Thanks,
-michael