From nobody Thu Nov 28 04:47:29 2024 Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [217.70.183.200]) (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 2B20F1E3760; Fri, 4 Oct 2024 16:16:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.200 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728058577; cv=none; b=lpSLMB+5ATWC68z/3PiqINREgwU/rpPiYGZx2UsMdK0q8dd+7pne+DyshcAiFRNbFeUbEDTgOxy18SUVCkSU52lQXRQTjx+PACqF3iTmMIKlv3GzsW1AD55EIZdax2zf5x7jEl6Q5DuMxExK+ywAg4J1VDLvXOWT090EkGQgY8k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728058577; c=relaxed/simple; bh=Nl9ovOr0JrFISdFoJ16CYHXfCUoM759fcxXvz+/XEps=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ipIe8ju3uBfJvfKVAGaRpNHS16isLhMdP9tOReAyzrxfeC/rvCCzxc76rb7wTyULI8j6ePMZub8QNHZLqv2XkjEkHBd1d2sOInJzaJEROBC8F03R3pDLcSRHmRqbN+oiBvoMFc0RHzz+V1WoE4H7YrmQ5soh4a8PefZkXFmgdmc= 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=XXZOTKXl; arc=none smtp.client-ip=217.70.183.200 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="XXZOTKXl" Received: by mail.gandi.net (Postfix) with ESMTPSA id 9A8072000D; Fri, 4 Oct 2024 16:16:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1728058573; 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=8bbMTQ2Ujk5xefPwIIDflX8atbICLJzjWfHmkwLkMEk=; b=XXZOTKXlGW729F30JPg2425kU3jttNDmC5BAlvX0aBEmXaEkk4p1pK0eJ2Jtx6pBErIQ7T BIdePdzb1wqtPTnrUb3EfJ5vzSSFrzDc2fsYCyfe22/9CEtl0btrrptyW4CcdQ+GMs2F8g mULDRQc+3aTBR514Kl4GqKAIb51duuZz/gqJahGmupYG66xWgpt+oEpzSwLPGcCrxGMjNH rEdu2wNB4J7BVwgN9JyP/stpLwbdl5WRLOQ+YIpfreO/hezkOCsnLVmkhv6JOt3BeI5K9T mVPFakwcS2Uu1IUK1wKoJ3bghEiiFKnciSOAXU/oETNlmloI3QnLvBX96JE1hw== 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?Marek=20Beh=C3=BAn?= , =?UTF-8?q?K=C3=B6ry=20Maincent?= , Oleksij Rempel Subject: [PATCH net-next v2 8/9] net: ethtool: phy: allow reporting and setting the phy isolate status Date: Fri, 4 Oct 2024 18:15:58 +0200 Message-ID: <20241004161601.2932901-9-maxime.chevallier@bootlin.com> X-Mailer: git-send-email 2.46.1 In-Reply-To: <20241004161601.2932901-1-maxime.chevallier@bootlin.com> References: <20241004161601.2932901-1-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-GND-Sasl: maxime.chevallier@bootlin.com Content-Type: text/plain; charset="utf-8" Add the isolate status information to the ETHTOOL_PHY_GET netlink command attributes, and allow changing this parameter from a newly-introduced ETHTOOL_PHY_SET command. Signed-off-by: Maxime Chevallier --- V2 : Dropped loopback mode Documentation/networking/ethtool-netlink.rst | 1 + include/uapi/linux/ethtool_netlink.h | 2 + net/ethtool/netlink.c | 8 +++ net/ethtool/netlink.h | 1 + net/ethtool/phy.c | 68 ++++++++++++++++++++ 5 files changed, 80 insertions(+) diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/n= etworking/ethtool-netlink.rst index 295563e91082..800a8812a760 100644 --- a/Documentation/networking/ethtool-netlink.rst +++ b/Documentation/networking/ethtool-netlink.rst @@ -2235,6 +2235,7 @@ Kernel response contents: bus, the name of this sfp = bus ``ETHTOOL_A_PHY_DOWNSTREAM_SFP_NAME`` string if the phy controls an sfp= bus, the name of the sfp bus + ``ETHTOOL_A_PHY_ISOLATE`` u8 The PHY Isolate status =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D =20 When ``ETHTOOL_A_PHY_UPSTREAM_TYPE`` is PHY_UPSTREAM_PHY, the PHY's parent= is diff --git a/include/uapi/linux/ethtool_netlink.h b/include/uapi/linux/etht= ool_netlink.h index 283305f6b063..bee5bf7ef90d 100644 --- a/include/uapi/linux/ethtool_netlink.h +++ b/include/uapi/linux/ethtool_netlink.h @@ -59,6 +59,7 @@ enum { ETHTOOL_MSG_MM_SET, ETHTOOL_MSG_MODULE_FW_FLASH_ACT, ETHTOOL_MSG_PHY_GET, + ETHTOOL_MSG_PHY_SET, =20 /* add new constants above here */ __ETHTOOL_MSG_USER_CNT, @@ -1079,6 +1080,7 @@ enum { ETHTOOL_A_PHY_UPSTREAM_INDEX, /* u32 */ ETHTOOL_A_PHY_UPSTREAM_SFP_NAME, /* string */ ETHTOOL_A_PHY_DOWNSTREAM_SFP_NAME, /* string */ + ETHTOOL_A_PHY_ISOLATE, /* u8 */ =20 /* add new constants above here */ __ETHTOOL_A_PHY_CNT, diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c index e3f0ef6b851b..26982f47a934 100644 --- a/net/ethtool/netlink.c +++ b/net/ethtool/netlink.c @@ -394,6 +394,7 @@ ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] =3D { [ETHTOOL_MSG_PLCA_GET_STATUS] =3D ðnl_plca_status_request_ops, [ETHTOOL_MSG_MM_GET] =3D ðnl_mm_request_ops, [ETHTOOL_MSG_MM_SET] =3D ðnl_mm_request_ops, + [ETHTOOL_MSG_PHY_SET] =3D ðnl_phy_request_ops, }; =20 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *= cb) @@ -1243,6 +1244,13 @@ static const struct genl_ops ethtool_genl_ops[] =3D { .policy =3D ethnl_phy_get_policy, .maxattr =3D ARRAY_SIZE(ethnl_phy_get_policy) - 1, }, + { + .cmd =3D ETHTOOL_MSG_PHY_SET, + .flags =3D GENL_UNS_ADMIN_PERM, + .doit =3D ethnl_default_set_doit, + .policy =3D ethnl_phy_set_policy, + .maxattr =3D ARRAY_SIZE(ethnl_phy_set_policy) - 1, + }, }; =20 static const struct genl_multicast_group ethtool_nl_mcgrps[] =3D { diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h index 203b08eb6c6f..7ae73e2eab32 100644 --- a/net/ethtool/netlink.h +++ b/net/ethtool/netlink.h @@ -485,6 +485,7 @@ extern const struct nla_policy ethnl_mm_get_policy[ETHT= OOL_A_MM_HEADER + 1]; extern const struct nla_policy ethnl_mm_set_policy[ETHTOOL_A_MM_MAX + 1]; extern const struct nla_policy ethnl_module_fw_flash_act_policy[ETHTOOL_A_= MODULE_FW_FLASH_PASSWORD + 1]; extern const struct nla_policy ethnl_phy_get_policy[ETHTOOL_A_PHY_HEADER += 1]; +extern const struct nla_policy ethnl_phy_set_policy[ETHTOOL_A_PHY_MAX + 1]; =20 int ethnl_set_features(struct sk_buff *skb, struct genl_info *info); int ethnl_act_cable_test(struct sk_buff *skb, struct genl_info *info); diff --git a/net/ethtool/phy.c b/net/ethtool/phy.c index ed8f690f6bac..b211bd83a3a0 100644 --- a/net/ethtool/phy.c +++ b/net/ethtool/phy.c @@ -30,10 +30,13 @@ ethnl_phy_reply_size(const struct ethnl_req_info *req_b= ase, struct phy_req_info *req_info =3D PHY_REQINFO(req_base); struct phy_device_node *pdn =3D req_info->pdn; struct phy_device *phydev =3D pdn->phy; + const struct ethtool_phy_ops *ops; size_t size =3D 0; =20 ASSERT_RTNL(); =20 + ops =3D ethtool_phy_ops; + /* ETHTOOL_A_PHY_INDEX */ size +=3D nla_total_size(sizeof(u32)); =20 @@ -66,6 +69,10 @@ ethnl_phy_reply_size(const struct ethnl_req_info *req_ba= se, size +=3D nla_total_size(strlen(sfp_name) + 1); } =20 + /* ETHTOOL_A_PHY_ISOLATE */ + if (ops && ops->get_config) + size +=3D nla_total_size(sizeof(u8)); + return size; } =20 @@ -75,10 +82,20 @@ ethnl_phy_fill_reply(const struct ethnl_req_info *req_b= ase, struct sk_buff *skb) struct phy_req_info *req_info =3D PHY_REQINFO(req_base); struct phy_device_node *pdn =3D req_info->pdn; struct phy_device *phydev =3D pdn->phy; + const struct ethtool_phy_ops *ops; + struct phy_device_config cfg; enum phy_upstream ptype; + int ret; =20 ptype =3D pdn->upstream_type; =20 + ops =3D ethtool_phy_ops; + if (ops && ops->get_config) { + ret =3D ops->get_config(phydev, &cfg); + if (ret) + return ret; + } + if (nla_put_u32(skb, ETHTOOL_A_PHY_INDEX, phydev->phyindex) || nla_put_string(skb, ETHTOOL_A_PHY_NAME, dev_name(&phydev->mdio.dev)) = || nla_put_u32(skb, ETHTOOL_A_PHY_UPSTREAM_TYPE, ptype)) @@ -114,6 +131,13 @@ ethnl_phy_fill_reply(const struct ethnl_req_info *req_= base, struct sk_buff *skb) return -EMSGSIZE; } =20 + /* Append PHY configuration, if possible */ + if (!ops || !ops->get_config) + return 0; + + if (nla_put_u8(skb, ETHTOOL_A_PHY_ISOLATE, cfg.isolate)) + return -EMSGSIZE; + return 0; } =20 @@ -304,3 +328,47 @@ int ethnl_phy_dumpit(struct sk_buff *skb, struct netli= nk_callback *cb) =20 return ret; } + +const struct nla_policy ethnl_phy_set_policy[] =3D { + [ETHTOOL_A_PHY_HEADER] =3D + NLA_POLICY_NESTED(ethnl_header_policy_phy), + [ETHTOOL_A_PHY_ISOLATE] =3D NLA_POLICY_MAX(NLA_U8, 1), +}; + +static int ethnl_set_phy(struct ethnl_req_info *req_info, struct genl_info= *info) +{ + struct netlink_ext_ack *extack =3D info->extack; + const struct ethtool_phy_ops *ops; + struct nlattr **tb =3D info->attrs; + struct phy_device_config cfg; + struct phy_device *phydev; + bool mod =3D false; + int ret; + + ops =3D ethtool_phy_ops; + if (!ops || !ops->set_config || !ops->get_config) + return -EOPNOTSUPP; + + /* We're running under rtnl */ + phydev =3D ethnl_req_get_phydev(req_info, tb[ETHTOOL_A_PHY_HEADER], + extack); + if (IS_ERR_OR_NULL(phydev)) + return -ENODEV; + + ret =3D ops->get_config(phydev, &cfg); + if (ret) + return ret; + + ethnl_update_bool(&cfg.isolate, tb[ETHTOOL_A_PHY_ISOLATE], &mod); + + if (!mod) + return 0; + + /* Returning 0 is fine as we don't have a notification */ + return ops->set_config(phydev, &cfg, extack); +} + +const struct ethnl_request_ops ethnl_phy_request_ops =3D { + .hdr_attr =3D ETHTOOL_A_PHY_HEADER, + .set =3D ethnl_set_phy, +}; --=20 2.46.1