linux-kernel - [PATCH net-next v3 10/47] net: phylink: Adjust link settings based on rate adaptation

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Message-Id: <20220715215954.1449214-11-sean.anderson@seco.com>
Date:   Fri, 15 Jul 2022 17:59:17 -0400
From:   Sean Anderson <sean.anderson@...o.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Madalin Bucur <madalin.bucur@....com>, netdev@...r.kernel.org
Cc:     Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        linux-arm-kernel@...ts.infradead.org,
        Russell King <linux@...linux.org.uk>,
        linux-kernel@...r.kernel.org,
        Sean Anderson <sean.anderson@...o.com>,
        Alexandru Marginean <alexandru.marginean@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH net-next v3 10/47] net: phylink: Adjust link settings based on rate adaptation

If the phy is configured to use pause-based rate adaptation, ensure that
the link is full duplex with pause frame reception enabled. Note that these
settings may be overridden by ethtool.

Signed-off-by: Sean Anderson <sean.anderson@...o.com>
---

Changes in v3:
- New

 drivers/net/phy/phylink.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 7fa21941878e..7f65413aa778 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1445,6 +1445,10 @@ static void phylink_phy_change(struct phy_device *phydev, bool up)
 	pl->phy_state.speed = phy_interface_speed(phydev->interface,
 						  phydev->speed);
 	pl->phy_state.duplex = phydev->duplex;
+	if (phydev->rate_adaptation == RATE_ADAPT_PAUSE) {
+		pl->phy_state.duplex = DUPLEX_FULL;
+		rx_pause = true;
+	}
 	pl->phy_state.pause = MLO_PAUSE_NONE;
 	if (tx_pause)
 		pl->phy_state.pause |= MLO_PAUSE_TX;
-- 
2.35.1.1320.gc452695387.dirty