From patchwork Wed Feb 28 11:47:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 13575331 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 37D6EC47DD9 for ; Wed, 28 Feb 2024 11:48:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=V9DH560qbtpnaCtTJeozTdWgHUXiGOYW9LDmpIFC3Jc=; b=4wvVPUXBLpilgF Z+Oc6gMsj4WnaC2t1/6yrrnEguA9vNGWpxzonaALwWcPzbf+Y3/58fGQ7RThIfOPDfXtttgIkT0N0 TvupcYA6idW1QQk6/EHjjYQ15QKQFOojoZkEW0aaOoUafKmCf6CsrwZ2y//VXcbDxL0xWSOoN3Z39 oTqHioqVit7nJ/IWIcKD/70aSdHGuJODuASgALq2UUX0y+WtpDhmVzHQbbClilE4yi3BmNY6T1re6 70yVEQTMclQMp58q7Q8LXxcgY4wB1yuGq7AsR+E4PN5GvA7A3w/0xKcmuhyA+UaMZsz3975gWYWgr aLqA9E/5MvNt978zePyA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfIPp-000000095nx-04QD; Wed, 28 Feb 2024 11:48:01 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfIPU-000000095g1-4BOc for linux-arm-kernel@lists.infradead.org; Wed, 28 Feb 2024 11:47:44 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id 5EF631C000E; Wed, 28 Feb 2024 11:47:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1709120859; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3MXNsYf4aMbx/yz5fFqHi9DQsFD4zYWoE+WdbvkPVrE=; b=mRqx88XegkxLGBxCS0XXZrA73LF1qNcwWzpZHAYiPfL/KwqrhA+id2Kv4xsHqyLmjMdFsO 4imQvWVt5lePLZD/QfyJ3u4adtMUKfTyDBKe0+Ds8wCjzY5VUom01x4asXY6XEbsMAn8bx hyNE8qCw8qRug5cTpJKkJJCLabx9KOVDDqOcBSddoJ7nZKDoSM8DxxbpVPyckBRAiU8Pzo TsfOCQeQ8BpXfjsk0jqFOWoPosifv+pw1EFzVEFofWDbUiuPdK7d8h7sALR17xesPRuZiY XISEwkW4hUbE63nVfaSk+wh3gH7kS8sCuCcrfn23sw4f6nQfVByK6SAgKF6m+g== From: Maxime Chevallier To: davem@davemloft.net Cc: Maxime Chevallier , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Russell King , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Herve Codina , Florian Fainelli , Heiner Kallweit , Vladimir Oltean , =?utf-8?q?K=C3=B6ry_Maincent?= , Jesse Brandeburg , Jonathan Corbet , =?utf-8?q?Marek_Beh=C3=BAn?= , Piergiorgio Beruto , Oleksij Rempel , =?utf-8?q?Nicol=C3=B2_Veronese?= , Simon Horman , mwojtas@chromium.org Subject: [PATCH net-next v9 04/13] net: sfp: Add helper to return the SFP bus name Date: Wed, 28 Feb 2024 12:47:18 +0100 Message-ID: <20240228114728.51861-5-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240228114728.51861-1-maxime.chevallier@bootlin.com> References: <20240228114728.51861-1-maxime.chevallier@bootlin.com> MIME-Version: 1.0 X-GND-Sasl: maxime.chevallier@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240228_034741_423896_854DC0C1 X-CRM114-Status: UNSURE ( 9.58 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Knowing the bus name is helpful when we want to expose the link topology to userspace, add a helper to return the SFP bus name. Signed-off-by: Maxime Chevallier Reviewed-by: Andrew Lunn --- V9: - No changes V8: - No changes V7: - No changes V6: - No changes V5: - Added Andrew's R-b V4: - No changes V3: - Added RTNL assert drivers/net/phy/sfp-bus.c | 11 +++++++++++ include/linux/sfp.h | 6 ++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c index e05013aeecc3..413021619afe 100644 --- a/drivers/net/phy/sfp-bus.c +++ b/drivers/net/phy/sfp-bus.c @@ -859,3 +859,14 @@ void sfp_unregister_socket(struct sfp_bus *bus) sfp_bus_put(bus); } EXPORT_SYMBOL_GPL(sfp_unregister_socket); + +const char *sfp_get_name(struct sfp_bus *bus) +{ + ASSERT_RTNL(); + + if (bus->sfp_dev) + return dev_name(bus->sfp_dev); + + return NULL; +} +EXPORT_SYMBOL_GPL(sfp_get_name); diff --git a/include/linux/sfp.h b/include/linux/sfp.h index 0573e53b0c11..55c0ab17c9e2 100644 --- a/include/linux/sfp.h +++ b/include/linux/sfp.h @@ -570,6 +570,7 @@ struct sfp_bus *sfp_bus_find_fwnode(const struct fwnode_handle *fwnode); int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, const struct sfp_upstream_ops *ops); void sfp_bus_del_upstream(struct sfp_bus *bus); +const char *sfp_get_name(struct sfp_bus *bus); #else static inline int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id, @@ -648,6 +649,11 @@ static inline int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream, static inline void sfp_bus_del_upstream(struct sfp_bus *bus) { } + +static inline const char *sfp_get_name(struct sfp_bus *bus) +{ + return NULL; +} #endif #endif