From patchwork Wed Apr 27 16:06:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakob Koschel X-Patchwork-Id: 1623148 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=djNzVmRe; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4KpP7X5rvqz9s5V for ; Thu, 28 Apr 2022 02:18:32 +1000 (AEST) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4KpP7X3bCvz3fMC for ; Thu, 28 Apr 2022 02:18:32 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=djNzVmRe; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2a00:1450:4864:20::631; helo=mail-ej1-x631.google.com; envelope-from=jakobkoschel@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=djNzVmRe; dkim-atps=neutral Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4KpNv20LnRz3bs8 for ; Thu, 28 Apr 2022 02:07:42 +1000 (AEST) Received: by mail-ej1-x631.google.com with SMTP id l18so4354738ejc.7 for ; Wed, 27 Apr 2022 09:07:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=/A0b7QXPnRxcdjzjvBy95srF3RhPajcOL797uVjW17k=; b=djNzVmRevWSY+hIiC1/H30PkHbSU6xqUomoS6vNxNxSsA2vgIsDJmjFdrGiJt1K8MS XvJVUBQenTNDmnRY1OxwRpXMU6eq8+3j9NKMg8A0/fSUm/OXLuHTuvFMOxq1tfiv5/lo PETw/pty71e5r7Z5xql/U9OyQrFDpphWq0AKn82ZX5A9j9EvNXqncx1kGerazGaEhlhW BtwUHrzoVQidChJdfESgX4ChoMs1jqCIz+LCsesKzeGmJ4AwqLUMeAhlcZ0ui7hA1ca6 FYrGCeBuXiEVcQ+uN5Ej2ozdZDqA9mtVVLC0RLXFL7lInO3enpCUsINJFZgSSzcJVwCF jf8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=/A0b7QXPnRxcdjzjvBy95srF3RhPajcOL797uVjW17k=; b=B2T/IwcpRnjhU3MfW68juZiTehpJWflqFYehxp2SskRl/wMiVXfK1ikb5i6F1TjZEA mEmXD1Otc+X6qwt3M5TuhK2FKCL4S5h0DjCpfABsXwil2UHDsZ1cbAmeae3TQu5bP4iS avp90NsohFyBnhu/e6EcedboBVhy/c0Y8KZH/JoTpw/IsKJrfQ+F+MWF04Fh3kDRsCCT 7Dt+fXGLUfbQZQ5uSgoGAnZUjH6G1uTD1TcNFvRFu4GemIBjiHQHzu1HQRjjlxnijzBn ycxB4thuWLqKA4GAFK+TZLqGwqi/1oGvJ3YKZ4pqugKIiw7d14oxHuBEepc10GCj8mLW oCkg== X-Gm-Message-State: AOAM531XSuc51Wn2RBoFUfAna7Rs0Wam3njLRY6xaHvffMUnUCHhWFDr Lxw3W55cy/O9SHdOrd6w4/g= X-Google-Smtp-Source: ABdhPJzZ9GK5JMKIlGUFt2skqXUpBcMIDshg75p8eWcFCf8XLqwMsnXkioKQLmTu+ChB5hH1wuiIcQ== X-Received: by 2002:a17:907:98eb:b0:6f3:ce56:c1a2 with SMTP id ke11-20020a17090798eb00b006f3ce56c1a2mr2984393ejc.173.1651075659037; Wed, 27 Apr 2022 09:07:39 -0700 (PDT) Received: from localhost.localdomain (i130160.upc-i.chello.nl. [62.195.130.160]) by smtp.googlemail.com with ESMTPSA id n5-20020a170906378500b006efb4ab6f59sm6984098ejc.86.2022.04.27.09.07.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Apr 2022 09:07:38 -0700 (PDT) From: Jakob Koschel To: "David S. Miller" Subject: [PATCH net-next v5 18/18] team: Remove use of list iterator variable for list_for_each_entry_from() Date: Wed, 27 Apr 2022 18:06:35 +0200 Message-Id: <20220427160635.420492-19-jakobkoschel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220427160635.420492-1-jakobkoschel@gmail.com> References: <20220427160635.420492-1-jakobkoschel@gmail.com> MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrew Lunn , Song Liu , Alexei Starovoitov , Eric Dumazet , Paul Mackerras , Ariel Elior , Florian Fainelli , Daniel Borkmann , Steen Hegelund , John Fastabend , Andrii Nakryiko , "Bos, H.J." , Jason Gunthorpe , linux-arm-kernel@lists.infradead.org, Martin Habets , Paolo Abeni , Vivien Didelot , Jiri Pirko , Arnd Bergmann , KP Singh , Christophe JAILLET , Jakob Koschel , Jakub Kicinski , Brian Johannesmeyer , Lars Povlsen , Colin Ian King , Manish Chopra , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, UNGLinuxDriver@microchip.com, Yonghong Song , Edward Cree , Casper Andersson , Xu Wang , Cristiano Giuffrida , bpf@vger.kernel.org, Vladimir Oltean , linuxppc-dev@lists.ozlabs.org, Martin KaFai Lau , Mike Rapoport Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" In preparation to limit the scope of the list iterator variable to the list traversal loop, use a dedicated pointer to iterate through the list [1]. Since that variable should not be used past the loop iteration, a separate variable is used to 'remember the current location within the loop'. To either continue iterating from that position or skip the iteration (if the previous iteration was complete) list_prepare_entry() is used. Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/ [1] Signed-off-by: Jakob Koschel --- drivers/net/team/team.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index b07dde6f0abf..688c4393f099 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -2425,17 +2425,17 @@ static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq, int flags, team_nl_send_func_t *send_func, struct list_head *sel_opt_inst_list) { + struct team_option_inst *opt_inst, *tmp = NULL; struct nlattr *option_list; struct nlmsghdr *nlh; void *hdr; - struct team_option_inst *opt_inst; int err; struct sk_buff *skb = NULL; bool incomplete; int i; - opt_inst = list_first_entry(sel_opt_inst_list, - struct team_option_inst, tmp_list); + tmp = list_first_entry(sel_opt_inst_list, + struct team_option_inst, tmp_list); start_again: err = __send_and_alloc_skb(&skb, team, portid, send_func); @@ -2456,7 +2456,9 @@ static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq, goto nla_put_failure; i = 0; + opt_inst = list_prepare_entry(tmp, sel_opt_inst_list, tmp_list); incomplete = false; + tmp = NULL; list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) { err = team_nl_fill_one_option_get(skb, team, opt_inst); if (err) { @@ -2464,6 +2466,7 @@ static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq, if (!i) goto errout; incomplete = true; + tmp = opt_inst; break; } goto errout; @@ -2707,14 +2710,14 @@ static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, struct nlattr *port_list; struct nlmsghdr *nlh; void *hdr; - struct team_port *port; + struct team_port *port, *tmp = NULL; int err; struct sk_buff *skb = NULL; bool incomplete; int i; - port = list_first_entry_or_null(&team->port_list, - struct team_port, list); + tmp = list_first_entry_or_null(&team->port_list, + struct team_port, list); start_again: err = __send_and_alloc_skb(&skb, team, portid, send_func); @@ -2744,7 +2747,9 @@ static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, err = team_nl_fill_one_port_get(skb, one_port); if (err) goto errout; - } else if (port) { + } else { + port = list_prepare_entry(tmp, &team->port_list, list); + tmp = NULL; list_for_each_entry_from(port, &team->port_list, list) { err = team_nl_fill_one_port_get(skb, port); if (err) { @@ -2752,6 +2757,7 @@ static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, if (!i) goto errout; incomplete = true; + tmp = port; break; } goto errout;