netdev - [PATCH net-next V1 3/4] net: stmmac: Reconfigure the PHY WOL settings in stmmac

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210621094536.387442-4-pei.lee.ling@intel.com>
Date:   Mon, 21 Jun 2021 17:45:35 +0800
From:   Ling Pei Lee <pei.lee.ling@...el.com>
To:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        Voon Weifeng <weifeng.voon@...el.com>,
        Wong Vee Khee <vee.khee.wong@...ux.intel.com>,
        Wong Vee Khee <vee.khee.wong@...el.com>,
        Tan Tee Min <tee.min.tan@...el.com>,
        Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     pei.lee.ling@...el.com
Subject: [PATCH net-next V1 3/4] net: stmmac: Reconfigure the PHY WOL settings in stmmac_resume()

From: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>

After PHY received a magic packet, the PHY WOL event will be
triggered then PHY WOL event interrupt will be disarmed.
Ethtool settings will remain with WOL enabled after a S3/S4
suspend resume cycle as expected. Hence,the driver should
reconfigure the PHY settings to reenable/disable WOL
depending on the ethtool WOL settings in the resume flow.

Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
Co-developed-by: Ling Pei Lee <pei.lee.ling@...el.com>
Signed-off-by: Ling Pei Lee <pei.lee.ling@...el.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index a3b79ddcf08e..cd96e4d7a22e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -7246,6 +7246,16 @@ int stmmac_resume(struct device *dev)
 		phylink_start(priv->phylink);
 		/* We may have called phylink_speed_down before */
 		phylink_speed_up(priv->phylink);
+		/* Reconfigure PHY WOL if the WOL is enabled in ethtool,
+		 * so that subsequent WOL still can be triggered.
+		 */
+		if (!priv->plat->pmt) {
+			struct ethtool_wolinfo phy_wol = { .cmd = ETHTOOL_GWOL };
+
+			phylink_ethtool_get_wol(priv->phylink, &phy_wol);
+			if (phy_wol.wolopts)
+				phylink_ethtool_set_wol(priv->phylink, &phy_wol);
+		}
 		rtnl_unlock();
 	}
 
-- 
2.25.1