X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Flnx_virtio_nic.c;h=1ddcd1a7b6c6cd59c110d557447e1dbfbead081f;hb=d0ebfed83ac079f95da8bf79e64ac77f31d551ac;hp=7bcd9bba6ead03479cda968e0f03c4fa6f6baf8b;hpb=58a5fd180f52b2d9e15c3613324c17123672ee19;p=palacios.git

diff --git a/palacios/src/devices/lnx_virtio_nic.c b/palacios/src/devices/lnx_virtio_nic.c
index 7bcd9bb..1ddcd1a 100644
--- a/palacios/src/devices/lnx_virtio_nic.c
+++ b/palacios/src/devices/lnx_virtio_nic.c
@@ -82,6 +82,10 @@ struct virtio_net_state {
 
     ulong_t pkt_sent, pkt_recv, pkt_drop;
 
+#if 1 //for temporary performance testing purpose
+    long last_sent_time, last_recv_time;	
+#endif
+
     struct v3_dev_net_ops * net_ops;
 
     v3_lock_t lock;
@@ -204,6 +208,7 @@ static int handle_pkt_tx(struct guest_info *core, struct virtio_net_state * virt
     struct virtio_queue * q = &(virtio_state->tx_vq);
     struct virtio_net_hdr * hdr = NULL;
 
+    PrintDebug("Virtio NIC: TX: running on cpu: %d\n", V3_Get_CPU());
 
     while (q->cur_avail_idx != q->avail->index) {
 	struct vring_desc * hdr_desc = NULL;
@@ -221,7 +226,7 @@ static int handle_pkt_tx(struct guest_info *core, struct virtio_net_state * virt
 
 	hdr = (struct virtio_net_hdr*)hdr_addr;
 	desc_idx = hdr_desc->next;
-	
+
 	for (i = 0; i < desc_cnt - 1; i++) {	
 	    struct vring_desc * buf_desc = &(q->desc[desc_idx]);
 	    if (pkt_tx(core, virtio_state, buf_desc) == -1) {
@@ -246,6 +251,20 @@ static int handle_pkt_tx(struct guest_info *core, struct virtio_net_state * virt
 	virtio_state->virtio_cfg.pci_isr = 0x1;
     }
 
+#ifdef CONFIG_VNET_PROFILE
+    if (virtio_state->pkt_sent % 50000 == 0){
+	    long cur_time, time;
+	    rdtscll(cur_time);
+	    time = cur_time - virtio_state->last_sent_time;
+	    PrintError("Virtio NIC: last sent 50000 cycles: %ld\n",time);
+	    //PrintError("Virtio NIC: sent: %ld, rxed: %ld, dropped: %ld\n",
+		//	virtio_state->pkt_sent,
+		//	virtio_state->pkt_recv,
+		//	virtio_state->pkt_drop);
+	    rdtscll(virtio_state->last_sent_time);
+    }
+#endif
+
     return 0;
 }
 
@@ -482,8 +501,8 @@ static int virtio_rx(uint8_t * buf, uint32_t size, void * private_data) {
     int raw = 1;
 
     flags = v3_lock_irqsave(virtio->lock);
-	
-    PrintDebug("VIRTIO NIC: receiving packet to virtio nic %p, size:%d\n", virtio, size);
+
+    PrintDebug("VIRTIO NIC: RX on cpu %d to virtio nic %p, size:%d\n", V3_Get_CPU(), virtio, size);
 
     virtio->pkt_recv ++;
 
@@ -535,6 +554,7 @@ static int virtio_rx(uint8_t * buf, uint32_t size, void * private_data) {
 	q->cur_avail_idx++;
     } else {
 	virtio->pkt_drop++;
+	goto exit;
     }
 
     if (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
@@ -546,6 +566,20 @@ static int virtio_rx(uint8_t * buf, uint32_t size, void * private_data) {
     ret_val = offset;
 
 exit:
+	
+#ifdef CONFIG_VNET_PROFILE
+    if (virtio->pkt_recv % 50000 == 0){
+	    long cur_time, time;
+	    rdtscll(cur_time);
+	    time = cur_time - virtio->last_recv_time;
+	    PrintError("Virtio NIC: last recv 50000 cycles: %ld\n",time);
+	    //PrintError("Virtio NIC: sent: %ld, rxed: %ld, dropped: %ld\n",
+		//virtio->pkt_sent,
+		//virtio->pkt_recv,
+		//virtio->pkt_drop);
+	    rdtscll(virtio->last_recv_time);
+    }
+#endif
 
     v3_unlock_irqrestore(virtio->lock, flags);