From nobody Mon Feb 9 16:16:44 2026 Received: from smtpout-03.galae.net (smtpout-03.galae.net [185.246.85.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A6C653D668E for ; Tue, 3 Feb 2026 17:29:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.85.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770139765; cv=none; b=QQ6ZRESzoxfgfEcHSIRQVYKy0/ak4+hW+iSmvQKqJV1H6PmtHhKqsTLoWbjo2PJnypXMdtHFS+7YAhrLolRjd6QrvrX0udrxcOfvFBy800hgJcSfubu6vT7uBle4jjd+hANZ1dAsq6gj1r4jLS9uAnLlh5ytPZWCknQ42zJbXAw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770139765; c=relaxed/simple; bh=f0/3/mrCPrJHqIVyCbu48EYwHwbuoZwmfW42AbHjWH0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=u/a0aLHjsxP82pIYIdnkzrNzRqPs+WIVgcl0N/W6RNODJ27iglizXxwunxqIp9wfXSJtqW5hB1FW0WVNjnDgklk6Z06095xZyfCBOM8h55ZA88kfAOH9KfbKOsKbsLxxocB6ZRfabi5skk8ENIQcwHbChUSwgH1hKpSG5WFXDIg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=f/yU4DiL; arc=none smtp.client-ip=185.246.85.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="f/yU4DiL" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 5ABC44E423E4; Tue, 3 Feb 2026 17:29:22 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 2D88E60745; Tue, 3 Feb 2026 17:29:22 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id B6159119A8888; Tue, 3 Feb 2026 18:29:17 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1770139760; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding:in-reply-to:references; bh=oE3YHgEOb7zMldz7W5UEO4lNk/cteuFmDnyVlbi0dJs=; b=f/yU4DiLyOzT8BvaPzw3kWJj+kxMQaiHRR9TZC0DQI8pYnkd8eGk7kr+Kg9N3dcPaFVnjc 9KhPxKc6Qu5945dqqEyfV6y5GFOZbV40GBaHv7rxzVVfWmEHPtUYOw5KtcK9XYMOMceGtF pBZILeQtTEi1crlas/XodVDRPbqUzOb7PCA/4+oJAQgwZWWkc+BV7RXL+4wY7MCE0EivV0 cp1MNK7TNpe9Jj5yJdIlSGguZb9wNbieK8cDZ9tRCscgLP4ox4tD68iiyQrETE+FDl2l8c xV7xSSoI69VR3s4L2SnEuYVBPqlKFKAwUEluIBydnOY79fi5nb8N+yBlgqmcwA== From: Maxime Chevallier To: davem@davemloft.net, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Russell King , Heiner Kallweit Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Christophe Leroy , Herve Codina , Florian Fainelli , Vladimir Oltean , =?UTF-8?q?K=C3=B6ry=20Maincent?= , =?UTF-8?q?Marek=20Beh=C3=BAn?= , Oleksij Rempel , =?UTF-8?q?Nicol=C3=B2=20Veronese?= , Simon Horman , mwojtas@chromium.org, Romain Gantois , Daniel Golle , Dimitri Fedrau Subject: [PATCH net-next v4 11/13] net: phy: phy_link_topology: Add a helper to retrieve ports Date: Tue, 3 Feb 2026 18:28:35 +0100 Message-ID: <20260203172839.548524-12-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20260203172839.548524-1-maxime.chevallier@bootlin.com> References: <20260203172839.548524-1-maxime.chevallier@bootlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Last-TLS-Session-Version: TLSv1.3 Content-Type: text/plain; charset="utf-8" In order to allow netlink access to phy_ports, let's add a helper to retrieve them. When handling a port coming from phy_link_topology, the caller must hold rtnl until it's done with it. Signed-off-by: Maxime Chevallier --- include/linux/phy_link_topology.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/include/linux/phy_link_topology.h b/include/linux/phy_link_top= ology.h index 66bceff72b19..ac2f5c80f1a6 100644 --- a/include/linux/phy_link_topology.h +++ b/include/linux/phy_link_topology.h @@ -13,6 +13,7 @@ =20 #include #include +#include =20 struct xarray; struct phy_device; @@ -66,6 +67,20 @@ phy_link_topo_get_phy(struct net_device *dev, u32 phyind= ex) return NULL; } =20 +static inline struct phy_port * +phy_link_topo_get_port(struct net_device *dev, u32 port_id) +{ + struct phy_link_topology *topo =3D dev->link_topo; + + ASSERT_RTNL(); + + if (!topo) + return NULL; + + /* Caller must hold RTNL while handling the phy_port */ + return xa_load(&topo->ports, port_id); +} + #else static inline int phy_link_topo_add_phy(struct net_device *dev, struct phy_device *phy, @@ -95,6 +110,12 @@ phy_link_topo_get_phy(struct net_device *dev, u32 phyin= dex) { return NULL; } + +static inline struct phy_port * +phy_link_topo_get_port(struct net_device *dev, u32 port_id) +{ + return NULL; +} #endif =20 #endif /* __PHY_LINK_TOPOLOGY_H */ --=20 2.49.0