From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 74C6D3D8903; Fri, 9 Oct 2026 14:31:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791556292; cv=none; b=Gr9ikx2ac6ZnVHGnPp10Gx+sXPi1CyhPgmLuNnhCZvvfKJuxQy51/uBVF4juhmBucJs9xsxbAgqzwqXzUf6qj5MMqiLYSRZABq2iZxu4CJuvhSleX1942o6PGdPMindNbBdCy8SmCfzcFkO7YpDdtvrs0mpRC29+eC4h8C1zA9o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791556292; c=relaxed/simple; bh=kaoDcc3zbahf0xi2NH9mD0UARQVn+wSe1Aq0rJcem3c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mMRBpovhqLmoAf3kHBX2L/fw64uOz78t2RfzBybcBZVLKIYKXDyvVjwZO017NfC7LZ/qDdAVTRYxdf6fGdxBtS/p+KKDiAcHZFw/2/g1bTfoobduownvDk5AwJYHyEM0eGjFGYncVSVInsy57Q4TmhMEEGI1HpV0gQrkYkSEp88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=EdIt/UUk; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="EdIt/UUk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9EB41F000FF; Fri, 9 Oct 2026 14:31:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1791556291; bh=meI03fxC3+mSEH3qBcEWaFoDssq9rF6LiE1k6Odt5K4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=EdIt/UUkh/OejZEjpQcp3LvTyspRvricL2Hwe/bpz0EuUkY23+gGAwflxaOXpHPQI V5Lc31r6zUVkR3AKcEosrPKRHHh+1E5tgu2wG4FB0DGhGrLV7P8N3cWyU9bTTSWGZV Q61gscqAmB+51C0Y7rVlAexLPnXitlORfXn52TYg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Quentin Freimanis , Simon Horman , Daniel Machon , Jakub Kicinski , Sasha Levin Subject: [PATCH 7.2 153/428] net: sparx5: make ports inherit the switch base mac address type Date: Fri, 9 Oct 2026 16:08:10 +0200 Message-ID: <20261009140949.528775221@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261009140946.008206689@linuxfoundation.org> References: <20261009140946.008206689@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Quentin Freimanis [ Upstream commit 5642b1648d5c4561d8ed7a410d0a7017f706604d ] When the switch uses a random base MAC address it does not mark each port's address as random: $ dmesg | grep "MAC addr" sparx5-switch e00c0000.switch: MAC addr was not set, use random MAC $ cat /sys/class/net/eth0/addr_assign_type 0 0 is NET_ADDR_PERM, so userspace thinks this is a stable address. With a random MAC reported as NET_ADDR_PERM, systemd's MACAddressPolicy=persistent [1] leaves it unchanged, so a DHCP client gets a new IP address every boot and a static reservation can't be used. Reporting it as NET_ADDR_RANDOM makes systemd replace it with a stable address derived from the interface name and machine-id. Fixes: f3cad2611a77 ("net: sparx5: add hostmode with phylink support") Signed-off-by: Quentin Freimanis Reviewed-by: Simon Horman Reviewed-by: Daniel Machon Link: https://patch.msgid.link/20260928045012.30178-1-quentin@q-lab.dev Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/microchip/sparx5/sparx5_main.c | 1 + drivers/net/ethernet/microchip/sparx5/sparx5_main.h | 1 + drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c | 1 + 3 files changed, 3 insertions(+) diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c index dad713e9ddd5b..b530fb6d3d0c9 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c @@ -898,6 +898,7 @@ static int mchp_sparx5_probe(struct platform_device *pdev) dev_info(sparx5->dev, "MAC addr was not set, use random MAC\n"); eth_random_addr(sparx5->base_mac); sparx5->base_mac[5] = 0; + sparx5->base_mac_assign_type = NET_ADDR_RANDOM; } sparx5->fdma_irq = platform_get_irq_byname(sparx5->pdev, "fdma"); diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h index eb57b86fbe22f..0f7d8440f6149 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h @@ -392,6 +392,7 @@ struct sparx5 { struct notifier_block switchdev_blocking_nb; /* Switch state */ u8 base_mac[ETH_ALEN]; + u8 base_mac_assign_type; /* Associated bridge device (when bridged) */ struct net_device *hw_bridge_dev; /* Bridged interfaces */ diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c index 4dedf5d926416..b3725cf2dd44c 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c @@ -294,6 +294,7 @@ struct net_device *sparx5_create_netdev(struct sparx5 *sparx5, u32 portno) ndev->ethtool_ops = &sparx5_ethtool_ops; eth_hw_addr_gen(ndev, sparx5->base_mac, portno + 1); + ndev->addr_assign_type = sparx5->base_mac_assign_type; return ndev; } -- 2.53.0