From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53192) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cICUL-0007MS-8O for qemu-devel@nongnu.org; Sat, 17 Dec 2016 05:45:14 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cICUJ-00084z-SS for qemu-devel@nongnu.org; Sat, 17 Dec 2016 05:45:13 -0500 Received: from mga05.intel.com ([192.55.52.43]:21540) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cICUJ-0007ss-L1 for qemu-devel@nongnu.org; Sat, 17 Dec 2016 05:45:11 -0500 From: Wei Wang Date: Sat, 17 Dec 2016 18:43:18 +0800 Message-Id: <1481971427-11094-9-git-send-email-wei.w.wang@intel.com> In-Reply-To: <1481971427-11094-1-git-send-email-wei.w.wang@intel.com> References: <1481971427-11094-1-git-send-email-wei.w.wang@intel.com> Subject: [Qemu-devel] [PATCH v1 08/37] vhost-pci-slave/msg: VHOST_USER_SET_FEATURES List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: marcandre.lureau@gmail.com, mst@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, virtio-dev@lists.oasis-open.org Cc: Wei Wang Store the feature bits that have been negotiated between the master device and driver. The feature bits will be negotiated with the slave driver. Signed-off-by: Wei Wang --- hw/virtio/vhost-pci-slave.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/virtio/vhost-pci-slave.c b/hw/virtio/vhost-pci-slave.c index 4f445c2..bc6120c 100644 --- a/hw/virtio/vhost-pci-slave.c +++ b/hw/virtio/vhost-pci-slave.c @@ -50,6 +50,13 @@ static int vp_slave_get_features(CharBackend *chr_be, VhostUserMsg *msg) return vp_slave_write(chr_be, msg); } +static void vp_slave_set_features(VhostUserMsg *msg) +{ + /* Clear the protocol feature bit, which is useless for the device */ + vp_slave->feature_bits = msg->payload.u64 + & ~(1 << VHOST_USER_F_PROTOCOL_FEATURES); +} + static void vp_slave_event(void *opaque, int event) { switch (event) { @@ -98,6 +105,9 @@ static void vp_slave_read(void *opaque, const uint8_t *buf, int size) if (ret < 0) goto err_handling; break; + case VHOST_USER_SET_FEATURES: + vp_slave_set_features(&msg); + break; default: error_report("vhost-pci-slave does not support msg request = %d", msg.request); -- 2.7.4