From patchwork Thu Mar 30 07:22:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 745110 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3vtx1N0M5yz9ryZ for ; Thu, 30 Mar 2017 18:23:04 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933255AbdC3HW5 (ORCPT ); Thu, 30 Mar 2017 03:22:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47676 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932790AbdC3HWy (ORCPT ); Thu, 30 Mar 2017 03:22:54 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 164E84FC; Thu, 30 Mar 2017 07:22:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 164E84FC Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jasowang@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 164E84FC Received: from jason-ThinkPad-T450s.redhat.com (vpn1-7-126.pek2.redhat.com [10.72.7.126]) by smtp.corp.redhat.com (Postfix) with ESMTP id EE5661898C; Thu, 30 Mar 2017 07:22:49 +0000 (UTC) From: Jason Wang To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mst@redhat.com, Jason Wang Subject: [PATCH V2 net-next 4/7] tap: export skb_array Date: Thu, 30 Mar 2017 15:22:27 +0800 Message-Id: <1490858550-7763-5-git-send-email-jasowang@redhat.com> In-Reply-To: <1490858550-7763-1-git-send-email-jasowang@redhat.com> References: <1490858550-7763-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Thu, 30 Mar 2017 07:22:53 +0000 (UTC) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch exports skb_array through tap_get_skb_array(). Caller can then manipulate skb array directly. Signed-off-by: Jason Wang --- drivers/net/tap.c | 13 +++++++++++++ include/linux/if_tap.h | 5 +++++ 2 files changed, 18 insertions(+) diff --git a/drivers/net/tap.c b/drivers/net/tap.c index 4d4173d..abdaf86 100644 --- a/drivers/net/tap.c +++ b/drivers/net/tap.c @@ -1193,6 +1193,19 @@ struct socket *tap_get_socket(struct file *file) } EXPORT_SYMBOL_GPL(tap_get_socket); +struct skb_array *tap_get_skb_array(struct file *file) +{ + struct tap_queue *q; + + if (file->f_op != &tap_fops) + return ERR_PTR(-EINVAL); + q = file->private_data; + if (!q) + return ERR_PTR(-EBADFD); + return &q->skb_array; +} +EXPORT_SYMBOL_GPL(tap_get_skb_array); + int tap_queue_resize(struct tap_dev *tap) { struct net_device *dev = tap->dev; diff --git a/include/linux/if_tap.h b/include/linux/if_tap.h index 3482c3c..4837157 100644 --- a/include/linux/if_tap.h +++ b/include/linux/if_tap.h @@ -3,6 +3,7 @@ #if IS_ENABLED(CONFIG_TAP) struct socket *tap_get_socket(struct file *); +struct skb_array *tap_get_skb_array(struct file *file); #else #include #include @@ -12,6 +13,10 @@ static inline struct socket *tap_get_socket(struct file *f) { return ERR_PTR(-EINVAL); } +static inline struct skb_array *tap_get_skb_array(struct file *f) +{ + return ERR_PTR(-EINVAL); +} #endif /* CONFIG_TAP */ #include