From patchwork Mon Jul 27 17:08:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Matteo Cascella X-Patchwork-Id: 11687341 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 885E7138C for ; Mon, 27 Jul 2020 17:11:41 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5F63C2074F for ; Mon, 27 Jul 2020 17:11:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="dl91Te8m" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F63C2074F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:50216 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k06f6-0004ps-LR for patchwork-qemu-devel@patchwork.kernel.org; Mon, 27 Jul 2020 13:11:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44390) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k06eX-00042N-BZ for qemu-devel@nongnu.org; Mon, 27 Jul 2020 13:11:05 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:38027 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1k06eU-0001hc-T8 for qemu-devel@nongnu.org; Mon, 27 Jul 2020 13:11:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1595869861; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Nh/OBZrDSdQNlUS87sBlAwUaRAup/MDWVNhTmAZj7jg=; b=dl91Te8mQS8YmcGvfT+DrGiby6+2GMXDE67wHYixlqjH/eea4MfzU8mobwSzLyI+JnzKPj kWiDNzQYLjjjPBflKgljUJXb4mlnXDt9AbeTKanjIao6cLZR6gfBxvzQtoqVLbiFOVq2zw mHJUP1e7so7dXHNflQf5SqQskpX3Rrw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-372-7futQtXdPK-VltRFgb-5qg-1; Mon, 27 Jul 2020 13:09:44 -0400 X-MC-Unique: 7futQtXdPK-VltRFgb-5qg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B1B0A1009441; Mon, 27 Jul 2020 17:09:43 +0000 (UTC) Received: from f32-work.redhat.com (unknown [10.40.192.64]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6394190E65; Mon, 27 Jul 2020 17:09:42 +0000 (UTC) From: Mauro Matteo Cascella To: qemu-devel@nongnu.org Subject: [PATCH 1/2] hw/net/net_tx_pkt: add function to check pkt->max_raw_frags Date: Mon, 27 Jul 2020 19:08:37 +0200 Message-Id: <20200727170838.1101775-2-mcascell@redhat.com> In-Reply-To: <20200727170838.1101775-1-mcascell@redhat.com> References: <20200727170838.1101775-1-mcascell@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=mcascell@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/27 01:44:14 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jasowang@redhat.com, dmitry.fleytman@gmail.com, mcascell@redhat.com, ezrakiez@gmail.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This patch introduces a new function in hw/net/net_tx_pkt.{c,h} to check the current data fragment against the maximum number of data fragments. Reported-by: Ziming Zhang Signed-off-by: Mauro Matteo Cascella --- hw/net/net_tx_pkt.c | 5 +++++ hw/net/net_tx_pkt.h | 8 ++++++++ 2 files changed, 13 insertions(+) diff --git a/hw/net/net_tx_pkt.c b/hw/net/net_tx_pkt.c index 9560e4a49e..d035618f2c 100644 --- a/hw/net/net_tx_pkt.c +++ b/hw/net/net_tx_pkt.c @@ -400,6 +400,11 @@ bool net_tx_pkt_add_raw_fragment(struct NetTxPkt *pkt, hwaddr pa, } } +bool net_tx_pkt_exceed_max_fragments(struct NetTxPkt *pkt) +{ + return pkt->raw_frags >= pkt->max_raw_frags; +} + bool net_tx_pkt_has_fragments(struct NetTxPkt *pkt) { return pkt->raw_frags > 0; diff --git a/hw/net/net_tx_pkt.h b/hw/net/net_tx_pkt.h index 4ec8bbe9bd..e2ee46ae03 100644 --- a/hw/net/net_tx_pkt.h +++ b/hw/net/net_tx_pkt.h @@ -179,6 +179,14 @@ bool net_tx_pkt_send_loopback(struct NetTxPkt *pkt, NetClientState *nc); */ bool net_tx_pkt_parse(struct NetTxPkt *pkt); +/** +* indicates if the current data fragment exceeds max_raw_frags +* +* @pkt: packet +* +*/ +bool net_tx_pkt_exceed_max_fragments(struct NetTxPkt *pkt); + /** * indicates if there are data fragments held by this packet object. *