X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_vhost%2Fvhost.h;h=d49c3b8a98cacb4ef3436a6374fed4e6cb3edfec;hb=6d13ea8e8e49ab957deae2bba5ecf4a4bfe747d1;hp=3b3265c4b63e98232f3b9658a24a4c13fce56826;hpb=b13ad2decc8344641658674414d0347beca4bec6;p=dpdk.git

diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index 3b3265c4b6..d49c3b8a98 100644
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -286,56 +286,6 @@ struct guest_page {
 	uint64_t size;
 };
 
-/* The possible results of a message handling function */
-enum vh_result {
-	/* Message handling failed */
-	VH_RESULT_ERR   = -1,
-	/* Message handling successful */
-	VH_RESULT_OK    =  0,
-	/* Message handling successful and reply prepared */
-	VH_RESULT_REPLY =  1,
-};
-
-/**
- * function prototype for the vhost backend to handler specific vhost user
- * messages prior to the master message handling
- *
- * @param vid
- *  vhost device id
- * @param msg
- *  Message pointer.
- * @param skip_master
- *  If the handler requires skipping the master message handling, this variable
- *  shall be written 1, otherwise 0.
- * @return
- *  VH_RESULT_OK on success, VH_RESULT_REPLY on success with reply,
- *  VH_RESULT_ERR on failure
- */
-typedef enum vh_result (*vhost_msg_pre_handle)(int vid, void *msg,
-		uint32_t *skip_master);
-
-/**
- * function prototype for the vhost backend to handler specific vhost user
- * messages after the master message handling is done
- *
- * @param vid
- *  vhost device id
- * @param msg
- *  Message pointer.
- * @return
- *  VH_RESULT_OK on success, VH_RESULT_REPLY on success with reply,
- *  VH_RESULT_ERR on failure
- */
-typedef enum vh_result (*vhost_msg_post_handle)(int vid, void *msg);
-
-/**
- * pre and post vhost user message handlers
- */
-struct vhost_user_extern_ops {
-	vhost_msg_pre_handle pre_msg_handle;
-	vhost_msg_post_handle post_msg_handle;
-};
-
 /**
  * Device structure contains all configuration information relating
  * to the device.
@@ -358,7 +308,7 @@ struct virtio_net {
 	uint64_t		log_size;
 	uint64_t		log_base;
 	uint64_t		log_addr;
-	struct ether_addr	mac;
+	struct rte_ether_addr	mac;
 	uint16_t		mtu;
 
 	struct vhost_device_ops const *notify_ops;
@@ -379,10 +329,10 @@ struct virtio_net {
 	 */
 	int			vdpa_dev_id;
 
-	/* private data for virtio device */
+	/* context data for the external message handlers */
 	void			*extern_data;
 	/* pre and post vhost user message handlers for the device */
-	struct vhost_user_extern_ops extern_ops;
+	struct rte_vhost_user_extern_ops extern_ops;
 } __rte_cache_aligned;
 
 static __rte_always_inline bool
@@ -457,12 +407,9 @@ vhost_log_cache_sync(struct virtio_net *dev, struct vhost_virtqueue *vq)
 		   !dev->log_base))
 		return;
 
-	log_base = (unsigned long *)(uintptr_t)dev->log_base;
+	rte_smp_wmb();
 
-	/*
-	 * It is expected a write memory barrier has been issued
-	 * before this function is called.
-	 */
+	log_base = (unsigned long *)(uintptr_t)dev->log_base;
 
 	for (i = 0; i < vq->log_cache_nb_elem; i++) {
 		struct log_cache_entry *elem = vq->log_cache + i;
@@ -686,16 +633,20 @@ vhost_vring_call_split(struct virtio_net *dev, struct vhost_virtqueue *vq)
 	if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX)) {
 		uint16_t old = vq->signalled_used;
 		uint16_t new = vq->last_used_idx;
+		bool signalled_used_valid = vq->signalled_used_valid;
+
+		vq->signalled_used = new;
+		vq->signalled_used_valid = true;
 
 		VHOST_LOG_DEBUG(VHOST_DATA, "%s: used_event_idx=%d, old=%d, new=%d\n",
 			__func__,
 			vhost_used_event(vq),
 			old, new);
-		if (vhost_need_event(vhost_used_event(vq), new, old)
-			&& (vq->callfd >= 0)) {
-			vq->signalled_used = vq->last_used_idx;
+
+		if ((vhost_need_event(vhost_used_event(vq), new, old) &&
+					(vq->callfd >= 0)) ||
+				unlikely(!signalled_used_valid))
 			eventfd_write(vq->callfd, (eventfd_t) 1);
-		}
 	} else {
 		/* Kick the guest if necessary. */
 		if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT)
@@ -794,4 +745,38 @@ free_ind_table(void *idesc)
 	rte_free(idesc);
 }
 
+static __rte_always_inline void
+restore_mbuf(struct rte_mbuf *m)
+{
+	uint32_t mbuf_size, priv_size;
+
+	while (m) {
+		priv_size = rte_pktmbuf_priv_size(m->pool);
+		mbuf_size = sizeof(struct rte_mbuf) + priv_size;
+		/* start of buffer is after mbuf structure and priv data */
+
+		m->buf_addr = (char *)m + mbuf_size;
+		m->buf_iova = rte_mempool_virt2iova(m) + mbuf_size;
+		m = m->next;
+	}
+}
+
+static __rte_always_inline bool
+mbuf_is_consumed(struct rte_mbuf *m)
+{
+	while (m) {
+		if (rte_mbuf_refcnt_read(m) > 1)
+			return false;
+		m = m->next;
+	}
+
+	return true;
+}
+
+static __rte_always_inline void
+put_zmbuf(struct zcopy_mbuf *zmbuf)
+{
+	zmbuf->in_use = 0;
+}
+
 #endif /* _VHOST_NET_CDEV_H_ */