From mboxrd@z Thu Jan 1 00:00:00 1970 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 00CEBC433FE for ; Wed, 2 Nov 2022 21:33:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230232AbiKBVdt (ORCPT ); Wed, 2 Nov 2022 17:33:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38910 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229968AbiKBVdr (ORCPT ); Wed, 2 Nov 2022 17:33:47 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 338B4CEC for ; Wed, 2 Nov 2022 14:33:47 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C4D2461C50 for ; Wed, 2 Nov 2022 21:33:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D8C13C433D7; Wed, 2 Nov 2022 21:33:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1667424826; bh=yyQINV0o03vM7B2Khkj9uhVYAakxbih59M+NhlaJIiQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jNel0hBwozpOlWPyPT0XzHNbKtufN0CUYKwmeeMeaKF0KnF/PKw3s+XAm9U4qJz8P chHWcgMrHFdJ7SRmBb5iHe0so4azMStoxDOrWPFPJdebh4u9vvLQQq7CnJa4yxNDgX qGRhedSje+QPYrhi//qVwxE47VmmT3toxuWhwUYtsrv6Hl2Ibw/2FGJ+UaCiNVlvk6 L0ETZvQZNIR44oiHcqrYfllXqrLV6CD9P4zfsdT2ZcVqK9h2Hv1lh48y+pzfBrOcHN aO7f4O1bPOgrwya89mbt1m3SKeF+qQ7EZBPsjYFiNIBY6LcS/Mt4TwhVcxVtAblsel Nl3mm2BJOqtVQ== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, jiri@resnulli.us, razor@blackwall.org, nicolas.dichtel@6wind.com, gnault@redhat.com, jacob.e.keller@intel.com, fw@strlen.de, Jakub Kicinski Subject: [PATCH net-next v2 01/13] genetlink: refactor the cmd <> policy mapping dump Date: Wed, 2 Nov 2022 14:33:26 -0700 Message-Id: <20221102213338.194672-2-kuba@kernel.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221102213338.194672-1-kuba@kernel.org> References: <20221102213338.194672-1-kuba@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The code at the top of ctrl_dumppolicy() dumps mappings between ops and policies. It supports dumping both the entire family and single op if dump is filtered. But both of those cases are handled inside a loop, which makes the logic harder to follow and change. Refactor to split the two cases more clearly. Signed-off-by: Jakub Kicinski --- v2: bring the comment back --- net/netlink/genetlink.c | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 3e16527beb91..0a7a856e9ce0 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -1319,21 +1319,24 @@ static int ctrl_dumppolicy(struct sk_buff *skb, struct netlink_callback *cb) void *hdr; if (!ctx->policies) { - while (ctx->opidx < genl_get_cmd_cnt(ctx->rt)) { - struct genl_ops op; + struct genl_ops op; - if (ctx->single_op) { - int err; + if (ctx->single_op) { + int err; - err = genl_get_cmd(ctx->op, ctx->rt, &op); - if (WARN_ON(err)) - return skb->len; + err = genl_get_cmd(ctx->op, ctx->rt, &op); + if (WARN_ON(err)) + return err; - /* break out of the loop after this one */ - ctx->opidx = genl_get_cmd_cnt(ctx->rt); - } else { - genl_get_cmd_by_index(ctx->opidx, ctx->rt, &op); - } + if (ctrl_dumppolicy_put_op(skb, cb, &op)) + return skb->len; + + /* don't enter the loop below */ + ctx->opidx = genl_get_cmd_cnt(ctx->rt); + } + + while (ctx->opidx < genl_get_cmd_cnt(ctx->rt)) { + genl_get_cmd_by_index(ctx->opidx, ctx->rt, &op); if (ctrl_dumppolicy_put_op(skb, cb, &op)) return skb->len; -- 2.38.1