From patchwork Tue Apr 12 13:22:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikolay Aleksandrov X-Patchwork-Id: 12810817 X-Patchwork-Delegate: kuba@kernel.org 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 CDA53C433F5 for ; Tue, 12 Apr 2022 13:27:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236468AbiDLN3Y (ORCPT ); Tue, 12 Apr 2022 09:29:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43546 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356712AbiDLN2F (ORCPT ); Tue, 12 Apr 2022 09:28:05 -0400 Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 563984CD79 for ; Tue, 12 Apr 2022 06:23:11 -0700 (PDT) Received: by mail-ej1-x633.google.com with SMTP id p15so37305086ejc.7 for ; Tue, 12 Apr 2022 06:23:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=blackwall-org.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=uUhhwavoelOAutf6ZINYv5+4TG3VETWVUGFixQHcuak=; b=tLBOr9wUBkhPXAsBErczu7jI2Hf9tNdIWN6672jBjWl09l6oei62gKrRcjRCmtpBdO QYiUTa+9xRSvvG8KLnpbFIBIDKVHeHpmgD9+0dHxFCZtzs5AoXBWJKpcXFs4NHQI/ZyO JY0AZHS/d6lNQC1igzWeSohKzeYh4+mSSg6NKx2SZgSnSBJYAI1iGGBoxcPeUlYwDHNM zTqI4igELqHbQ15BCq0qGXaKwu1T1UlxIutjyWeatLZSEJW+Pf0evVabkYV+lJQ0J1fA LVBHw38hevuwNm3GPP5vgrhCJlMnCfVbwLCekONEpzMRrw6JPLeu17PiEGMxOPtrrGF0 udFQ== 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=uUhhwavoelOAutf6ZINYv5+4TG3VETWVUGFixQHcuak=; b=0I43LskB1bkBacVhk7lWxQAuPakYHT8olLuAj3Ap3hHwQT/VqNJ0LDaI4yhTtrEkkW EVj3alRS4wGdGRLu8k8Ttf622AMDqglBEnkcs/utsOq+TBBX9EsCJBgNU7s6fX0kgWqz nXJrSc/tY7mDV53Sur7Shzrnlv3LHxbtRKvtAjKVR40qCj3TpjA9rDWiauaj0z7sDywS iGAo6mVn4HhbKswUmf6q8vYx3B0PWSj9RKqH1kZ5dO6E0mywpt79F7/ZkT9BIadtRN6L GHlTrya5DNhH946xQKv5jz2vgGtkXu+zOnOkAOlBAums49+D2YHM73tXWbv1n9bxaO61 sFWw== X-Gm-Message-State: AOAM533R4LTj8ujzSJKusC3iHGa6+MP7BHbVCc54hOzepyFFrxCuDQEw 4x0XoDRnMkcpNCK75SHufxWDj3kNr6GkpcwG X-Google-Smtp-Source: ABdhPJxqGZgcn+OKL/uY1gOsVDHVyOtHRA3JfORbCy0PEaxBIutufAWEsMK8sV0BmV2FQIYFhylzBg== X-Received: by 2002:a17:906:c1d7:b0:6e8:4f18:fede with SMTP id bw23-20020a170906c1d700b006e84f18fedemr19124588ejb.95.1649769789466; Tue, 12 Apr 2022 06:23:09 -0700 (PDT) Received: from debil.. (87-243-81-1.ip.btc-net.bg. [87.243.81.1]) by smtp.gmail.com with ESMTPSA id z16-20020a17090665d000b006e8789e8cedsm3771301ejn.204.2022.04.12.06.23.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Apr 2022 06:23:09 -0700 (PDT) From: Nikolay Aleksandrov To: netdev@vger.kernel.org Cc: dsahern@kernel.org, roopa@nvidia.com, idosch@idosch.org, kuba@kernel.org, davem@davemloft.net, bridge@lists.linux-foundation.org, Nikolay Aleksandrov Subject: [PATCH net-next v3 1/8] net: netlink: add NLM_F_BULK delete request modifier Date: Tue, 12 Apr 2022 16:22:38 +0300 Message-Id: <20220412132245.2148794-2-razor@blackwall.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220412132245.2148794-1-razor@blackwall.org> References: <20220412132245.2148794-1-razor@blackwall.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Add a new delete request modifier called NLM_F_BULK which, when supported, would cause the request to delete multiple objects. The flag is a convenient way to signal that a multiple delete operation is requested which can be gradually added to different delete requests. In order to make sure older kernels will error out if the operation is not supported instead of doing something unintended we have to break a required condition when implementing support for this flag, f.e. for neighbors we will omit the mandatory mac address attribute. Initially it will be used to add flush with filtering support for bridge fdbs, but it also opens the door to add similar support to others. Signed-off-by: Nikolay Aleksandrov --- include/uapi/linux/netlink.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/netlink.h b/include/uapi/linux/netlink.h index 4c0cde075c27..855dffb4c1c3 100644 --- a/include/uapi/linux/netlink.h +++ b/include/uapi/linux/netlink.h @@ -72,6 +72,7 @@ struct nlmsghdr { /* Modifiers to DELETE request */ #define NLM_F_NONREC 0x100 /* Do not delete recursively */ +#define NLM_F_BULK 0x200 /* Delete multiple objects */ /* Flags for ACK message */ #define NLM_F_CAPPED 0x100 /* request was capped */