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: 13575323 X-Patchwork-Delegate: kuba@kernel.org Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [217.70.183.197]) (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 2969E3BBD7; Wed, 28 Feb 2024 11:47:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.197 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709120868; cv=none; b=BoTf/dgUBHm4pWzzfzt3PZOawrtkqtt3NqJdPqSdtS3lu38TlFSq+T+XQwgOXzzFoJQBoKlze+RAYU8CCeRxPaJtWMtQX0xAxbuMfvGIfB088d/ljXfUbcNar+qdoX5/UIfz/jB0yPEe+Of2rZTMzkVq6FTLw0BksXOfzYr29CU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709120868; c=relaxed/simple; bh=u3jKa9Wj8sA1q9aeurSLRH2PPRXCRnJJC4I68PdJRnw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=FgcmYR23XaLT2NWuaad7wajcb/JqTZpxneC5GDcTgsviD7vElsYJibfgs0doXX6FfXD4o4ehKofHe0CYx4tfFU84ltx1BW6Ac46WEzeTBRKq/+e7R/tK2ZLqo9POmQJNULgiqkw3Sfoks5VyQxs6QozOOTlEm9eaGvF+UVKnRJ0= 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=mRqx88Xe; arc=none smtp.client-ip=217.70.183.197 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="mRqx88Xe" 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> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: maxime.chevallier@bootlin.com X-Patchwork-Delegate: kuba@kernel.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