linux-kernel - [PATCH net-next v3 1/3] net: phy: add a new phy

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: <20260120203905.23805-2-eichest@gmail.com>
Date: Tue, 20 Jan 2026 21:30:02 +0100
From: Stefan Eichenberger <eichest@...il.com>
To: andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	mcoquelin.stm32@...il.com,
	alexandre.torgue@...s.st.com,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	hkallweit1@...il.com,
	linux@...linux.org.uk,
	linux-stm32@...md-mailman.stormreply.com,
	maxime.chevallier@...tlin.com,
	francesco.dolcini@...adex.com
Cc: netdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Stefan Eichenberger <stefan.eichenberger@...adex.com>
Subject: [PATCH net-next v3 1/3] net: phy: add a new phy_device flag to keep preamble before sfd

From: Stefan Eichenberger <stefan.eichenberger@...adex.com>

Add a new flag, PHY_F_KEEP_PREAMBLE_BEFORE_SFD, to indicate that the PHY
shall not remove the preamble before the SFD if it supports it. MACs
that do not support receiving frames without a preamble can set this
flag.

Signed-off-by: Stefan Eichenberger <stefan.eichenberger@...adex.com>
---
 include/linux/phy.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/linux/phy.h b/include/linux/phy.h
index fbbe028cc4b7b..a978173c0e2a1 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -802,8 +802,9 @@ struct phy_device {
 };
 
 /* Generic phy_device::dev_flags */
-#define PHY_F_NO_IRQ		0x80000000
-#define PHY_F_RXC_ALWAYS_ON	0x40000000
+#define PHY_F_NO_IRQ			0x80000000
+#define PHY_F_RXC_ALWAYS_ON		0x40000000
+#define PHY_F_KEEP_PREAMBLE_BEFORE_SFD	0x20000000
 
 #define to_phy_device(__dev)	container_of_const(to_mdio_device(__dev), struct phy_device, mdio)
 
-- 
2.51.0