From patchwork Tue Feb 13 15:04:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Chevallier X-Patchwork-Id: 13555239 X-Patchwork-Delegate: kuba@kernel.org Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) (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 05C385EE9B; Tue, 13 Feb 2024 15:04:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707836686; cv=none; b=mfXqMqy9cPeUzgU4qjAc4OClR5HKuTA6t40TFnPKu4G0jPe+Wg76vJ8uU0oAiv3/uLGHZgcDuAERnpEk5rlkaYb8q7gA0bLHH4D4PiHEkRNWycCSFBkfHGM/8OHhaJkodtyJJHTSH9JD6lKVMBAKjW8K5GHcDmPx6hTFOKLlgAs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707836686; c=relaxed/simple; bh=tyo+KC7pg/1rkjnwq9wNNL45hWJwDIjFK1Gq4wwdE0k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fiJjj0bMrSKlAVg/tsHqBp+h12LzFq4XlG3hoFSqo1n8Lc9QxQTyPAnJAlBEV1AA3SiiV3MjfnB+eCrtAZZCxSVgtMT/sCb0DyIwhCVN6mgO3cS957+sDOOLw+uriLKeJR0A3SMnDnMWOvam0sMFFfjGoQjYAyVmpXME+0nV/0s= 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=emmeAh0K; arc=none smtp.client-ip=217.70.183.201 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="emmeAh0K" Received: by mail.gandi.net (Postfix) with ESMTPSA id 1763E1BF208; Tue, 13 Feb 2024 15:04:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1707836682; 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=KTmhC9GjYAsePibiU7IujsC7f4CZ9RTCQLK3qNI1ORI=; b=emmeAh0KnbtvoWUOHUpDn4bsEHHOTy1L69fszsWqCBAjwx6IaxAeVvY2uFVcTikrZGiZiw b6sN6Il3Nfa9tYHQdJD+To12xliNdlgCcgaCyIauoCpCKG0V079fLtAi3eAC37yf+a+ATB lmuWtVP7RoevX8WNl1W7VBHODztLWHCnXAXimx2r9r28lIocrn8Ruxrgl5ngzc54BgQu1Q RiM90Qci4kFS1DjkybbEy0Y2LGldnis9sedvClZoY+CBOiSSqSJJ40XNlwI+9uH/TjnJN2 MhJxb5o6DqZMp9EaGvMxKbWX//9u82ewmMFoowbDnOBFZGiuQf1Hom2OC/y80Q== 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 v7 04/13] net: sfp: Add helper to return the SFP bus name Date: Tue, 13 Feb 2024 16:04:21 +0100 Message-ID: <20240213150431.1796171-5-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240213150431.1796171-1-maxime.chevallier@bootlin.com> References: <20240213150431.1796171-1-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 --- V7: - No changes V6: - No changes V5: - Added Andrew's R-b 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 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