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 A2481C433EF for ; Sat, 8 Jan 2022 11:53:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234157AbiAHLxy (ORCPT ); Sat, 8 Jan 2022 06:53:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234156AbiAHLxx (ORCPT ); Sat, 8 Jan 2022 06:53:53 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9976DC061574; Sat, 8 Jan 2022 03:53:53 -0800 (PST) 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 38B0060B52; Sat, 8 Jan 2022 11:53:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CCE95C36AE5; Sat, 8 Jan 2022 11:53:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1641642832; bh=7WMMzdMairMGQWTqXc8j5X+zOfq1O5agFsy0LbA6Ac0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uaAJgSnxQXeG4h3AxWfw0pbZA9SwVm6VkJPq/MzfB51Hl3nUBnDJdTfIj/Ry6nV2Z j3kTBD2hQzCyNLtwn6k/XDzCxK4mgMlMrFg56XUZ1/AEEwJPbzTtm5UYYvrnnlWWLU QAG443nD/8o3ISdzE27mnKa2G2SUfl8bY5G/3wRQwXqnxu/j+w8ktPf/jGOptbTeYu XihBlE8aV67EOxiTwUeuakr7vGTqvG3CsCMef3nyNMaLldQE9PPgvDvKfFpjXFFl9x 8wA1p25ofcxR056ai3LrzfSCx4KpD29/qIT8WLPCrydJa8c+mhQInkOLuQMbkg45Wi Y7qKEy7qWEUxQ== From: Lorenzo Bianconi To: bpf@vger.kernel.org, netdev@vger.kernel.org Cc: lorenzo.bianconi@redhat.com, davem@davemloft.net, kuba@kernel.org, ast@kernel.org, daniel@iogearbox.net, shayagr@amazon.com, john.fastabend@gmail.com, dsahern@kernel.org, brouer@redhat.com, echaudro@redhat.com, jasowang@redhat.com, alexander.duyck@gmail.com, saeed@kernel.org, maciej.fijalkowski@intel.com, magnus.karlsson@intel.com, tirthendu.sarkar@intel.com, toke@redhat.com Subject: [PATCH v21 bpf-next 01/23] net: skbuff: add size metadata to skb_shared_info for xdp Date: Sat, 8 Jan 2022 12:53:04 +0100 Message-Id: <9bb7c3c6993d81859173c60a9a0b586b71e32d39.1641641663.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Introduce xdp_frags_size field in skb_shared_info data structure to store xdp_buff/xdp_frame frame paged size (xdp_frags_size will be used in xdp multi-buff support). In order to not increase skb_shared_info size we will use a hole due to skb_shared_info alignment. Acked-by: Toke Hoiland-Jorgensen Acked-by: John Fastabend Acked-by: Jesper Dangaard Brouer Signed-off-by: Lorenzo Bianconi --- include/linux/skbuff.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 642acb0d1646..d6d2ca936ddf 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -539,6 +539,7 @@ struct skb_shared_info { * Warning : all fields before dataref are cleared in __alloc_skb() */ atomic_t dataref; + unsigned int xdp_frags_size; /* Intermediate layers must ensure that destructor_arg * remains valid until skb destructor */ -- 2.33.1