From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34959) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gNIgY-0002ST-Sk for qemu-devel@nongnu.org; Thu, 15 Nov 2018 09:32:05 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gNIgW-00046P-RS for qemu-devel@nongnu.org; Thu, 15 Nov 2018 09:31:58 -0500 Received: from mail-wr1-x442.google.com ([2a00:1450:4864:20::442]:38382) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gNIgU-0003sQ-TS for qemu-devel@nongnu.org; Thu, 15 Nov 2018 09:31:55 -0500 Received: by mail-wr1-x442.google.com with SMTP id e3-v6so21469325wrs.5 for ; Thu, 15 Nov 2018 06:31:31 -0800 (PST) Sender: Paolo Bonzini From: Paolo Bonzini Date: Thu, 15 Nov 2018 15:31:18 +0100 Message-Id: <20181115143124.19234-5-pbonzini@redhat.com> In-Reply-To: <20181115143124.19234-1-pbonzini@redhat.com> References: <20181115143124.19234-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH 04/10] vhost-user: support cross-endian vnet headers List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: lvivier@redhat.com, mst@redhat.com, jasowang@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= vhost-user already has a way to communicate the endianness of the guest via the vring endianness messages. The vring endianness always matches the vnet header endianness so there is no need to do anything else in the backend. Signed-off-by: Paolo Bonzini --- net/vhost-user.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/net/vhost-user.c b/net/vhost-user.c index a39f9c9974..cd9659df87 100644 --- a/net/vhost-user.c +++ b/net/vhost-user.c @@ -172,6 +172,17 @@ static void net_vhost_user_cleanup(NetClientState *nc) qemu_purge_queued_packets(nc); } +static int vhost_user_set_vnet_endianness(NetClientState *nc, + bool enable) +{ + /* Nothing to do. If the server supports + * VHOST_USER_PROTOCOL_F_CROSS_ENDIAN, it will get the + * vnet header endianness from there. If it doesn't, negotiation + * fails. + */ + return 0; +} + static bool vhost_user_has_vnet_hdr(NetClientState *nc) { assert(nc->info->type == NET_CLIENT_DRIVER_VHOST_USER); @@ -193,6 +204,8 @@ static NetClientInfo net_vhost_user_info = { .cleanup = net_vhost_user_cleanup, .has_vnet_hdr = vhost_user_has_vnet_hdr, .has_ufo = vhost_user_has_ufo, + .set_vnet_be = vhost_user_set_vnet_endianness, + .set_vnet_le = vhost_user_set_vnet_endianness, }; static gboolean net_vhost_user_watch(GIOChannel *chan, GIOCondition cond, -- 2.19.1