From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793212704; b=K4QMMQjVG2IHnPYiQVJWGN1z7PPRCV82muWAuzZJBzFJmKhN3pGJW9Utzk771tIM3ogX 0yd6siDtK3TY/pySxYrEmI6fephlBm8LwC6iRM3cTsH1TChlDdm12cC/tHb+GrkO5Kxrb CwPo56/siiQwxG1J5s+YthcpX5+6q3ad7Jyqlu2lJqNZWhYnnmPS6/sAW8uSrY+bsO0hF tOuJkoxB/ZoGQxtyDtR1SXOEofHxaJLXzmBujIom1iPFCFD6BvnziNcWv2KfWHeSrk0qm joLomZ3PuGkklHHjK8mABGbkSMJJCIJv34hUKPG0I/XABzyWkcdACLwM3g3DmbS+6iw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793212704; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=9ujm5nDIyUU2LJ1VQ7zUPiz81kUKLPUMgbw0zmrQltE=; b=HtJUei/V6VsUkhowjPJVXLHU8/uSYLNcVaxo8Pv0WQFlZPoTzze9zOwsTEvne5BTlt/Y fGrdcnsVON5kpwYBdVieko0AZMVv7OHvVzp2z8NRiz8tiwt178XSn6BWXlEnfs4skSnTk akftKVfBBrEDhEgSMmXp8qiGSzaqL2SRTm3VQnEW4/AZsixQvg6mf7GTgZEl9Q+byawZe fWT5AiqUubQGwAQRfK35XZwGJHeZSn+0RlG3GJ5GJKbvP+PXgntXhSszIRZm3jrB4Njpg vB+vFOQKow9/5KKNGxyyM4xFWa0dsXmBmnOEi22kXyEultMEJpub6ydL/Rm72vDfFlA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b="gNl/Qi5z"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0A700606A31A; Wed, 28 Oct 2026 18:38:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=gNl/Qi5z Received: by smtp.kernel.org (Postfix) with ESMTPSA id 119B81F01825; Wed, 28 Oct 2026 18:38:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793212703; bh=9ujm5nDIyUU2LJ1VQ7zUPiz81kUKLPUMgbw0zmrQltE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=gNl/Qi5zlxkqsGgkGnFteJqntNvcn8PYqFjXGFU/Sqrs2B980VgD5/LnDMX9Kjp8R 97YSeH6g+CyJGjB1Wl7GJFz8vWA7wdnvj2fS+WIQ9U0OeC9rBbic7FFJUxy7R6WJ25 /zWkb0Pr8hYul+SG9IXNtstpP9M57ZANhF4bGp4w= 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 6.1 0245/1887] net: sparx5: make ports inherit the switch base mac address type Date: Wed, 28 Oct 2026 17:39:01 +0100 Message-ID: <20261028170504.806839281@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170459.200466217@linuxfoundation.org> References: <20261028170459.200466217@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-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 1ed69e77b8958..fbff85b52472c 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c @@ -828,6 +828,7 @@ 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 cb3173d2b0e8d..6d01585dbedff 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h @@ -255,6 +255,7 @@ 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 d078156581d54..090aa6c14a0f1 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c @@ -270,6 +270,7 @@ 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