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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 316BDC433F5 for ; Fri, 15 Oct 2021 13:09:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 186E16115C for ; Fri, 15 Oct 2021 13:09:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239301AbhJONLh (ORCPT ); Fri, 15 Oct 2021 09:11:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:32984 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239295AbhJONLh (ORCPT ); Fri, 15 Oct 2021 09:11:37 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 83DF2610E5; Fri, 15 Oct 2021 13:09:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1634303370; bh=pDtVSoNi/JbR3Nu6XM5I5zaUiINhhd68H2LIM6iqbF8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CWRMX3zfIijco0zAJL9UGYHQvxR8I5R5FBmCK6E+yFPmMZtsw3OiV1Owj2/Dvrl+F TENnTmvkJmwu2s7olvEp7AqxKM6i7N1wS/d0YtE2vuNX2DOrXP54m9VcnvWJMd5DC2 JRA5vB21g3X8sl5jZZLwUCuzIm8RxuQPwR53BlGKv7syL438ZxLLIy10IUAe/CoysA qBPTfIRkDuPDbvG/wacUxiHttBe3335OHFfckk6sBhf6LSb+Htnqi6hPmeOFXbZ63s WvFXSu+gSnjqa/Op5M1o2fjYOJmoZXO36Zn9xhLY+WQ70O/2jvt8sRy5qHlSlwDjWH osmRzf5D7FwhQ== 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 v16 bpf-next 01/20] net: skbuff: add size metadata to skb_shared_info for xdp Date: Fri, 15 Oct 2021 15:08:38 +0200 Message-Id: X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@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: 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 841e2f0f5240..86f68042c533 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -529,6 +529,7 @@ 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 */ -- 2.31.1