From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53212) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cICUM-0007PG-LI for qemu-devel@nongnu.org; Sat, 17 Dec 2016 05:45:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cICUL-00085r-LU for qemu-devel@nongnu.org; Sat, 17 Dec 2016 05:45:14 -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 1cICUL-0007ss-Df for qemu-devel@nongnu.org; Sat, 17 Dec 2016 05:45:13 -0500 From: Wei Wang Date: Sat, 17 Dec 2016 18:43:19 +0800 Message-Id: <1481971427-11094-10-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 09/37] vhost-pci-slave/msg: VHOST_USER_GET_PROTOCOL_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 Add a new protocol feature, VHOST_USER_PROTOCOL_F_VHOST_PCI. This feature indicates the support of the vhost-pci extension for inter-vm communiaction. Signed-off-by: Wei Wang --- hw/virtio/vhost-pci-slave.c | 14 ++++++++++++++ include/hw/virtio/vhost-user.h | 6 ++++++ 2 files changed, 20 insertions(+) diff --git a/hw/virtio/vhost-pci-slave.c b/hw/virtio/vhost-pci-slave.c index bc6120c..ac9deae 100644 --- a/hw/virtio/vhost-pci-slave.c +++ b/hw/virtio/vhost-pci-slave.c @@ -67,6 +67,15 @@ static void vp_slave_event(void *opaque, int event) } } +static int vp_slave_get_protocol_features(CharBackend *chr_be, VhostUserMsg *msg) +{ + msg->payload.u64 = VHOST_USER_PROTOCOL_FEATURES; + msg->size = sizeof(msg->payload.u64); + msg->flags |= VHOST_USER_REPLY_MASK; + + return vp_slave_write(chr_be, msg); +} + static int vp_slave_can_read(void *opaque) { return VHOST_USER_HDR_SIZE; @@ -108,6 +117,11 @@ static void vp_slave_read(void *opaque, const uint8_t *buf, int size) case VHOST_USER_SET_FEATURES: vp_slave_set_features(&msg); break; + case VHOST_USER_GET_PROTOCOL_FEATURES: + ret = vp_slave_get_protocol_features(chr_be, &msg); + if (ret < 0) + goto err_handling; + break; default: error_report("vhost-pci-slave does not support msg request = %d", msg.request); diff --git a/include/hw/virtio/vhost-user.h b/include/hw/virtio/vhost-user.h index c189b26..a303513 100644 --- a/include/hw/virtio/vhost-user.h +++ b/include/hw/virtio/vhost-user.h @@ -11,12 +11,18 @@ enum VhostUserProtocolFeature { VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1, VHOST_USER_PROTOCOL_F_RARP = 2, VHOST_USER_PROTOCOL_F_REPLY_ACK = 3, + VHOST_USER_PROTOCOL_F_VHOST_PCI =4, VHOST_USER_PROTOCOL_F_MAX }; #define VHOST_USER_PROTOCOL_FEATURE_MASK ((1 << VHOST_USER_PROTOCOL_F_MAX) - 1) +#define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \ + (1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) | \ + (1ULL << VHOST_USER_PROTOCOL_F_RARP)) | \ + (1ULL << VHOST_USER_PROTOCOL_F_VHOST_PCI) + typedef enum VhostUserRequest { VHOST_USER_NONE = 0, VHOST_USER_GET_FEATURES = 1, -- 2.7.4