From nobody Mon Apr 13 11:52:36 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 48CE8C433FE for ; Fri, 11 Nov 2022 16:17:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233883AbiKKQRm (ORCPT ); Fri, 11 Nov 2022 11:17:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233688AbiKKQRk (ORCPT ); Fri, 11 Nov 2022 11:17:40 -0500 Received: from mail-ed1-x52d.google.com (mail-ed1-x52d.google.com [IPv6:2a00:1450:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54341658C for ; Fri, 11 Nov 2022 08:17:38 -0800 (PST) Received: by mail-ed1-x52d.google.com with SMTP id i21so8243292edj.10 for ; Fri, 11 Nov 2022 08:17:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rasmusvillemoes.dk; s=google; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=PPFK299nWfDr/V9J7p74DjQEhALYVf51OEuCFpbYSbM=; b=KBU+AAvwge0Xr3lQE8QmWKlPSunFws73fRLUrfKBI3t0C7DwjZNxz9x1Rs/CD8AOg7 aACR3Djshp/4SGNH1bl3rM8whcVgrQwz8IpxNGkznbL+XM9X+u05meAx3yOmRGlMyEoe bXMuNxJrrrdXPC6j9kBN7+DChSccZwvS1fHmE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=PPFK299nWfDr/V9J7p74DjQEhALYVf51OEuCFpbYSbM=; b=sJtv8NM4auKGtdB03/9UPjN62Lmf77oR7d1bPs0nIQW0lKYMB+rkpLwg4ZYqUkS2bb xsB9eQhiDFtpJcMsi6Jxz3GW/1N1CGpI+LPJqObm5AT6YI9d5eWUZPeXoS/Q4fxExZ/r 5ThgCUoesW6lJSd7BuCB5Tt3MChGO4QDiRy1s8gI5+kt56XVNcADr0EasgEkWywyaHDl dMgJJAf6uAzlMNo2ob/UnurS1VgYxDeO/uGO9bPSAyiM4XEtNarRjJWNgba52daQan2P qpiOKBX9By7leni/ZQEaKesyAoR9sOIqSdJsvUqJgXtcqa0WVyaOPaCxOSqtFkIDQs/d 3jRQ== X-Gm-Message-State: ANoB5pnFPzKz75pGHjnpA1ThYjUd3TB3lQqAwPtDKGafyZC327LAkzW1 bNvAoX8/qn77HH9yBIDrRte2pA== X-Google-Smtp-Source: AA0mqf7u9SiEuoNGLTdYBPh06DGK3wmN6MkxzOpkOfRUqlwNciq8kr6m4nWPJ2n3bwGG3KfupCj0Mg== X-Received: by 2002:aa7:d4d3:0:b0:45f:b80f:1fe8 with SMTP id t19-20020aa7d4d3000000b0045fb80f1fe8mr2064057edr.118.1668183456903; Fri, 11 Nov 2022 08:17:36 -0800 (PST) Received: from prevas-ravi.tritech.se ([80.208.71.65]) by smtp.gmail.com with ESMTPSA id v2-20020a170906292200b007aacfce2a91sm1038990ejd.27.2022.11.11.08.17.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Nov 2022 08:17:35 -0800 (PST) From: Rasmus Villemoes To: Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Rasmus Villemoes , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] net: dsa: use NET_NAME_PREDICTABLE for user ports with name given in DT Date: Fri, 11 Nov 2022 17:17:28 +0100 Message-Id: <20221111161729.915233-1-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.37.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" When a user port has a label in device tree, the corresponding netdevice is "predictably named by the kernel". Expose that information properly for the benefit of userspace tools that make decisions based on the name_assign_type attribute, e.g. a systemd-udev rule with "kernel" in NamePolicy. Signed-off-by: Rasmus Villemoes --- net/dsa/dsa2.c | 3 --- net/dsa/slave.c | 13 +++++++++++-- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index e504a18fc125..522fc1b6e8c6 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -1364,9 +1364,6 @@ static struct dsa_port *dsa_port_touch(struct dsa_swi= tch *ds, int index) =20 static int dsa_port_parse_user(struct dsa_port *dp, const char *name) { - if (!name) - name =3D "eth%d"; - dp->type =3D DSA_PORT_TYPE_USER; dp->name =3D name; =20 diff --git a/net/dsa/slave.c b/net/dsa/slave.c index a9fde48cffd4..dfefcc4a9ccf 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -2374,16 +2374,25 @@ int dsa_slave_create(struct dsa_port *port) { struct net_device *master =3D dsa_port_to_master(port); struct dsa_switch *ds =3D port->ds; - const char *name =3D port->name; struct net_device *slave_dev; struct dsa_slave_priv *p; + const char *name; + int assign_type; int ret; =20 if (!ds->num_tx_queues) ds->num_tx_queues =3D 1; =20 + if (port->name) { + name =3D port->name; + assign_type =3D NET_NAME_PREDICTABLE; + } else { + name =3D "eth%d"; + assign_type =3D NET_NAME_UNKNOWN; + } + slave_dev =3D alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name, - NET_NAME_UNKNOWN, ether_setup, + assign_type, ether_setup, ds->num_tx_queues, 1); if (slave_dev =3D=3D NULL) return -ENOMEM; --=20 2.37.2