X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fvirtio%2Fvirtio_user%2Fvirtio_user_dev.c;h=a4400e77206f40497c28e37ae33ad7b3501e590b;hb=85c4bcbcc57326cc63ad52082fa090cdfc7855a0;hp=2dc8f205105b80de556b50700e0d2f82f4c3da69;hpb=4cdc4d98313e717df7d1dba769d71e7e4050da54;p=dpdk.git

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 2dc8f20510..a4400e7720 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -13,6 +13,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#include <rte_string_fns.h>
 #include <rte_eal_memconfig.h>
 
 #include "vhost.h"
@@ -124,7 +125,6 @@ is_vhost_user_by_type(const char *path)
 int
 virtio_user_start_device(struct virtio_user_dev *dev)
 {
-	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
 	uint64_t features;
 	int ret;
 
@@ -141,7 +141,7 @@ virtio_user_start_device(struct virtio_user_dev *dev)
 	 * replaced when we get proper supports from the
 	 * memory subsystem in the future.
 	 */
-	rte_rwlock_read_lock(&mcfg->memory_hotplug_lock);
+	rte_mcfg_mem_read_lock();
 	pthread_mutex_lock(&dev->mutex);
 
 	if (is_vhost_user_by_type(dev->path) && dev->vhostfd < 0)
@@ -179,12 +179,12 @@ virtio_user_start_device(struct virtio_user_dev *dev)
 
 	dev->started = true;
 	pthread_mutex_unlock(&dev->mutex);
-	rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
+	rte_mcfg_mem_read_unlock();
 
 	return 0;
 error:
 	pthread_mutex_unlock(&dev->mutex);
-	rte_rwlock_read_unlock(&mcfg->memory_hotplug_lock);
+	rte_mcfg_mem_read_unlock();
 	/* TODO: free resource here or caller to check */
 	return -1;
 }
@@ -224,17 +224,13 @@ out:
 static inline void
 parse_mac(struct virtio_user_dev *dev, const char *mac)
 {
-	int i, r;
-	uint32_t tmp[ETHER_ADDR_LEN];
+	struct rte_ether_addr tmp;
 
 	if (!mac)
 		return;
 
-	r = sscanf(mac, "%x:%x:%x:%x:%x:%x", &tmp[0],
-			&tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]);
-	if (r == ETHER_ADDR_LEN) {
-		for (i = 0; i < ETHER_ADDR_LEN; ++i)
-			dev->mac_addr[i] = (uint8_t)tmp[i];
+	if (rte_ether_unformat_addr(mac, &tmp) == 0) {
+		memcpy(dev->mac_addr, &tmp, RTE_ETHER_ADDR_LEN);
 		dev->mac_specified = 1;
 	} else {
 		/* ignore the wrong mac, use random mac */
@@ -426,14 +422,15 @@ virtio_user_dev_setup(struct virtio_user_dev *dev)
 int
 virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues,
 		     int cq, int queue_size, const char *mac, char **ifname,
-		     int mrg_rxbuf, int in_order, int packed_vq)
+		     int server, int mrg_rxbuf, int in_order, int packed_vq)
 {
 	pthread_mutex_init(&dev->mutex, NULL);
-	snprintf(dev->path, PATH_MAX, "%s", path);
+	strlcpy(dev->path, path, PATH_MAX);
 	dev->started = 0;
 	dev->max_queue_pairs = queues;
 	dev->queue_pairs = 1; /* mq disabled by default */
 	dev->queue_size = queue_size;
+	dev->is_server = server;
 	dev->mac_specified = 0;
 	dev->frontend_features = 0;
 	dev->unsupported_features = ~VIRTIO_USER_SUPPORTED_FEATURES;
@@ -616,6 +613,10 @@ virtio_user_handle_ctrl_msg(struct virtio_user_dev *dev, struct vring *vring,
 
 		queues = *(uint16_t *)(uintptr_t)vring->desc[idx_data].addr;
 		status = virtio_user_handle_mq(dev, queues);
+	} else if (hdr->class == VIRTIO_NET_CTRL_RX  ||
+		   hdr->class == VIRTIO_NET_CTRL_MAC ||
+		   hdr->class == VIRTIO_NET_CTRL_VLAN) {
+		status = 0;
 	}
 
 	/* Update status */
@@ -627,8 +628,10 @@ virtio_user_handle_ctrl_msg(struct virtio_user_dev *dev, struct vring *vring,
 static inline int
 desc_is_avail(struct vring_packed_desc *desc, bool wrap_counter)
 {
-	return wrap_counter == !!(desc->flags & VRING_DESC_F_AVAIL(1)) &&
-		wrap_counter != !!(desc->flags & VRING_DESC_F_USED(1));
+	uint16_t flags = __atomic_load_n(&desc->flags, __ATOMIC_ACQUIRE);
+
+	return wrap_counter == !!(flags & VRING_PACKED_DESC_F_AVAIL) &&
+		wrap_counter != !!(flags & VRING_PACKED_DESC_F_USED);
 }
 
 static uint32_t
@@ -665,6 +668,10 @@ virtio_user_handle_ctrl_msg_packed(struct virtio_user_dev *dev,
 		queues = *(uint16_t *)(uintptr_t)
 				vring->desc[idx_data].addr;
 		status = virtio_user_handle_mq(dev, queues);
+	} else if (hdr->class == VIRTIO_NET_CTRL_RX  ||
+		   hdr->class == VIRTIO_NET_CTRL_MAC ||
+		   hdr->class == VIRTIO_NET_CTRL_VLAN) {
+		status = 0;
 	}
 
 	/* Update status */
@@ -683,19 +690,24 @@ virtio_user_handle_cq_packed(struct virtio_user_dev *dev, uint16_t queue_idx)
 {
 	struct virtio_user_queue *vq = &dev->packed_queues[queue_idx];
 	struct vring_packed *vring = &dev->packed_vrings[queue_idx];
-	uint16_t n_descs;
+	uint16_t n_descs, flags;
 
+	/* Perform a load-acquire barrier in desc_is_avail to
+	 * enforce the ordering between desc flags and desc
+	 * content.
+	 */
 	while (desc_is_avail(&vring->desc[vq->used_idx],
 			     vq->used_wrap_counter)) {
 
 		n_descs = virtio_user_handle_ctrl_msg_packed(dev, vring,
 				vq->used_idx);
 
-		rte_smp_wmb();
-		vring->desc[vq->used_idx].flags =
-			VRING_DESC_F_WRITE |
-			VRING_DESC_F_AVAIL(vq->used_wrap_counter) |
-			VRING_DESC_F_USED(vq->used_wrap_counter);
+		flags = VRING_DESC_F_WRITE;
+		if (vq->used_wrap_counter)
+			flags |= VRING_PACKED_DESC_F_AVAIL_USED;
+
+		__atomic_store_n(&vring->desc[vq->used_idx].flags, flags,
+				 __ATOMIC_RELEASE);
 
 		vq->used_idx += n_descs;
 		if (vq->used_idx >= dev->queue_size) {