From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Liu Subject: [PATCH net-next V3 3/3] xen: netif.h: document feature-split-event-channels Date: Wed, 22 May 2013 17:34:47 +0100 Message-ID: <1369240487-18834-4-git-send-email-wei.liu2@citrix.com> References: <1369240487-18834-1-git-send-email-wei.liu2@citrix.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , , , Wei Liu To: , Return-path: Received: from smtp.citrix.com ([66.165.176.89]:34299 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755063Ab3EVQeu (ORCPT ); Wed, 22 May 2013 12:34:50 -0400 In-Reply-To: <1369240487-18834-1-git-send-email-wei.liu2@citrix.com> Sender: netdev-owner@vger.kernel.org List-ID: This patch synchronises documentation for feature-split-event-channels from Xen canonical header file. Signed-off-by: Wei Liu --- include/xen/interface/io/netif.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/xen/interface/io/netif.h b/include/xen/interface/io/netif.h index 3ef3fe0..eb262e3 100644 --- a/include/xen/interface/io/netif.h +++ b/include/xen/interface/io/netif.h @@ -38,6 +38,18 @@ * that it cannot safely queue packets (as it may not be kicked to send them). */ + /* + * "feature-split-event-channels" is introduced to separate guest TX + * and RX notificaion. Backend either doesn't support this feature or + * advertise it via xenstore as 0 (disabled) or 1 (enabled). + * + * To make use of this feature, frontend should allocate two event + * channels for TX and RX, advertise them to backend as + * "event-channel-tx" and "event-channel-rx" respectively. If frontend + * doesn't want to use this feature, it just writes "event-channel" + * node as before. + */ + /* * This is the 'wire' format for packets: * Request 1: xen_netif_tx_request -- XEN_NETTXF_* (any flags) -- 1.7.10.4