From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: stefanc@marvell.com
Cc: davem@davemloft.net, andrew@lunn.ch, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, shaulb@marvell.com,
nadavh@marvell.com, ymarkman@marvell.com, marcin@marvell.com
Subject: Re: [PATCH] net: phylink: Fix flow control resolution
Date: Thu, 5 Sep 2019 17:59:44 +0100 [thread overview]
Message-ID: <20190905165943.GL13294@shell.armlinux.org.uk> (raw)
In-Reply-To: <1567701978-16056-1-git-send-email-stefanc@marvell.com>
On Thu, Sep 05, 2019 at 07:46:18PM +0300, stefanc@marvell.com wrote:
> From: Stefan Chulski <stefanc@marvell.com>
>
> Regarding to IEEE 802.3-2015 standard section 2
> 28B.3 Priority resolution - Table 28-3 - Pause resolution
>
> In case of Local device Pause=1 AsymDir=0, Link partner
> Pause=1 AsymDir=1, Local device resolution should be enable PAUSE
> transmit, disable PAUSE receive.
> And in case of Local device Pause=1 AsymDir=1, Link partner
> Pause=1 AsymDir=0, Local device resolution should be enable PAUSE
> receive, disable PAUSE transmit.
>
> Signed-off-by: Stefan Chulski <stefanc@marvell.com>
> Reported-by: Shaul Ben-Mayor <shaulb@marvell.com>
Good catch, thanks for the patch.
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Fixes: 9525ae83959b ("phylink: add phylink infrastructure")
> ---
> drivers/net/phy/phylink.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
> index a45c5de..a5a57ca 100644
> --- a/drivers/net/phy/phylink.c
> +++ b/drivers/net/phy/phylink.c
> @@ -376,8 +376,8 @@ static void phylink_get_fixed_state(struct phylink *pl, struct phylink_link_stat
> * Local device Link partner
> * Pause AsymDir Pause AsymDir Result
> * 1 X 1 X TX+RX
> - * 0 1 1 1 RX
> - * 1 1 0 1 TX
> + * 0 1 1 1 TX
> + * 1 1 0 1 RX
> */
> static void phylink_resolve_flow(struct phylink *pl,
> struct phylink_link_state *state)
> @@ -398,7 +398,7 @@ static void phylink_resolve_flow(struct phylink *pl,
> new_pause = MLO_PAUSE_TX | MLO_PAUSE_RX;
> else if (pause & MLO_PAUSE_ASYM)
> new_pause = state->pause & MLO_PAUSE_SYM ?
> - MLO_PAUSE_RX : MLO_PAUSE_TX;
> + MLO_PAUSE_TX : MLO_PAUSE_RX;
> } else {
> new_pause = pl->link_config.pause & MLO_PAUSE_TXRX_MASK;
> }
> --
> 1.9.1
>
>
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
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next prev parent reply other threads:[~2019-09-05 16:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 16:46 [PATCH] net: phylink: Fix flow control resolution stefanc
2019-09-05 16:59 ` Russell King - ARM Linux admin [this message]
2019-09-07 15:27 ` David Miller
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