From patchwork Fri Dec 15 17:12:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 13494704 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 7C244C4332F for ; Fri, 15 Dec 2023 17:13:44 +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=J5gZYsEZit2/dYx+zLpLTeyGEsHTF0ohiGcspu7DhNc=; b=nCCVOEMEhUBMue CKxxhSp5Ow+AycPyifGkKk7z2/2FnO0oULRByCuwWHSSwXturflqfR2Mas++PlmMEdDCA20HEKV2q OU+YSvXf8wS44la9T740v/A+3FH6tZMZveYvQHmPdpHq1naKlN/blRwciHNl/ezNCzQTezb6en0Is hgUzZnOtixfZflP0cNyb/b1zR0j2R+cAv3exnXQczLLhWIvh5SI+W3cZ3C+7sK+/CQO8BX/zEyD8V 7SGkhiEjT6276SWUnvXkDtVUtBXV5swLGnMd9YtKAcrQsolMmNxRKaZhhKUgEtIbNSYr/L83bmKyn AUE9UYFJe/nkVCafsy5Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rEBkM-0040aV-0s; Fri, 15 Dec 2023 17:13:10 +0000 Received: from relay6-d.mail.gandi.net ([2001:4b98:dc4:8::226]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rEBjz-0040Hz-2I for linux-arm-kernel@lists.infradead.org; Fri, 15 Dec 2023 17:12:51 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id 0C929C0005; Fri, 15 Dec 2023 17:12:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1702660366; 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=KoglPoPxMjohGlT19IV2d4irMqcCP5CPPQtgcH9Zsx0=; b=YLMRoKKnAUa9V7xJHgVwKZv6oJTp8Q2KJuV26+i+wFtvUNqqkuA3FOaYRkp3O8ShbnVuel b4lXchIE17nVN8NXlKNHJvhlsdjJqyNq9XVkIhlBIocsQKgp0Wlzn3ZUSNrZxUIYztSzU6 YtHmA9d3ZuuGN+PzCrZZP2Hr7g5ofViwRa2OAWmv4oNGiUci34JFHNnESgqTrKcQDbIx52 OPZ319L4wF/aC15Yj4gPRtUGIg9ALMfxuOE0X1JwK43yXp1XSufQwKvKxrgy7D1ZuDJ7/A X87uIJ6jYWe+bLmq0hF7Mrn1veS4emcSVovmRZaQ5cIYNkj94NuWM3iVn3og7Q== 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?= Subject: [PATCH net-next v4 04/13] net: sfp: Add helper to return the SFP bus name Date: Fri, 15 Dec 2023 18:12:26 +0100 Message-ID: <20231215171237.1152563-5-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231215171237.1152563-1-maxime.chevallier@bootlin.com> References: <20231215171237.1152563-1-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-20231215_091248_060780_E714FF29 X-CRM114-Status: UNSURE ( 9.82 ) 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 --- V4: - No changes V3: - Added RTNL assert - Made the stub inline V2: New patch 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 3a86c41e1235..fb1c102714b5 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