From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: stefanc@marvell.com
Cc: netdev@vger.kernel.org, thomas.petazzoni@bootlin.com,
davem@davemloft.net, nadavh@marvell.com, ymarkman@marvell.com,
linux-kernel@vger.kernel.org, kuba@kernel.org, mw@semihalf.com,
andrew@lunn.ch, atenart@kernel.org
Subject: Re: [PATCH v4 net-next 00/19] net: mvpp2: Add TX Flow Control support
Date: Thu, 28 Jan 2021 16:43:17 +0000 [thread overview]
Message-ID: <20210128164317.GS1551@shell.armlinux.org.uk> (raw)
In-Reply-To: <1611747815-1934-1-git-send-email-stefanc@marvell.com>
On Wed, Jan 27, 2021 at 01:43:16PM +0200, stefanc@marvell.com wrote:
> Armada hardware has a pause generation mechanism in GOP (MAC).
> The GOP generate flow control frames based on an indication programmed in Ports Control 0 Register. There is a bit per port.
> However assertion of the PortX Pause bits in the ports control 0 register only sends a one time pause.
> To complement the function the GOP has a mechanism to periodically send pause control messages based on periodic counters.
> This mechanism ensures that the pause is effective as long as the Appropriate PortX Pause is asserted.
I've tested this on my Macchiatobin SingleShot, which seems to be Ax
silicon (and I've checked a couple of my other Armada 8040 platforms
which are also Ax silicon too) and networking remains functional
without flow control with the gigabit port achieving wire speed. I
have not yet tested the 10G ports.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2021-01-28 16:48 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-27 11:43 [PATCH v4 net-next 00/19] net: mvpp2: Add TX Flow Control support stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 01/19] doc: marvell: add cm3-mem device tree bindings description stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 02/19] dts: marvell: add CM3 SRAM memory to cp115 ethernet device tree stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 03/19] net: mvpp2: add CM3 SRAM memory map stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 04/19] doc: marvell: add PPv2.3 description to marvell-pp2.txt stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 05/19] net: mvpp2: add PPv23 version definition stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 06/19] net: mvpp2: always compare hw-version vs MVPP21 stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 07/19] net: mvpp2: increase BM pool size to 2048 buffers stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 08/19] net: mvpp2: increase RXQ size to 1024 descriptors stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 09/19] net: mvpp2: add FCA periodic timer configurations stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 10/19] net: mvpp2: add FCA RXQ non occupied descriptor threshold stefanc
2021-01-27 17:36 ` Willem de Bruijn
2021-01-27 18:41 ` [EXT] " Stefan Chulski
2021-01-28 16:40 ` Russell King - ARM Linux admin
2021-01-27 11:43 ` [PATCH v4 net-next 11/19] net: mvpp2: add spinlock for FW FCA configuration path stefanc
2021-01-27 17:39 ` Willem de Bruijn
2021-01-27 18:27 ` [EXT] " Stefan Chulski
2021-01-27 11:43 ` [PATCH v4 net-next 12/19] net: mvpp2: enable global flow control stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 13/19] net: mvpp2: add RXQ flow control configurations stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 14/19] net: mvpp2: add ethtool flow control configuration support stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 15/19] net: mvpp2: add BM protection underrun feature support stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 16/19] net: mvpp2: add PPv23 RX FIFO flow control stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 17/19] net: mvpp2: set 802.3x GoP Flow Control mode stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 18/19] net: mvpp2: limit minimum ring size to 1024 descriptors stefanc
2021-01-27 11:43 ` [PATCH v4 net-next 19/19] net: mvpp2: add TX FC firmware check stefanc
2021-01-27 14:05 ` Russell King - ARM Linux admin
2021-01-27 14:37 ` [EXT] " Stefan Chulski
2021-01-27 14:59 ` Russell King - ARM Linux admin
2021-01-27 15:10 ` Stefan Chulski
2021-01-27 15:13 ` Russell King - ARM Linux admin
2021-01-27 15:23 ` Stefan Chulski
2021-01-27 17:55 ` [PATCH v4 net-next 00/19] net: mvpp2: Add TX Flow Control support Willem de Bruijn
2021-01-28 16:43 ` Russell King - ARM Linux admin [this message]
2021-01-28 16:47 ` Marcin Wojtas
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