2 files changed, 52 insertions, 41 deletions

diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
index 0c6416213837..4b51f903fb73 100644
--- a/drivers/net/ethernet/sun/niu.c
+++ b/drivers/net/ethernet/sun/niu.c
@@ -3341,8 +3341,7 @@ static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
 
 	niu_hash_page(rp, page, addr);
 	if (rp->rbr_blocks_per_page > 1)
-		atomic_add(rp->rbr_blocks_per_page - 1,
-			   &compound_head(page)->_count);
+		atomic_add(rp->rbr_blocks_per_page - 1, &page->_count);
 
 	for (i = 0; i < rp->rbr_blocks_per_page; i++) {
 		__le32 *rbr = &rp->rbr[start_index + i];
diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
index 3699b98d5b2c..2b10b85d8a08 100644
--- a/drivers/net/ethernet/sun/sunvnet.c
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -50,6 +50,7 @@ MODULE_VERSION(DRV_MODULE_VERSION);
 #define	VNET_MAX_RETRIES	10
 
 static int __vnet_tx_trigger(struct vnet_port *port, u32 start);
+static void vnet_port_reset(struct vnet_port *port);
 
 /* Ordered from largest major to lowest */
 static struct vio_version vnet_versions[] = {
@@ -351,10 +352,15 @@ static int vnet_rx_one(struct vnet_port *port, struct vio_net_desc *desc)
 	unsigned int len = desc->size;
 	unsigned int copy_len;
 	struct sk_buff *skb;
+	int maxlen;
 	int err;
 
 	err = -EMSGSIZE;
-	if (unlikely(len < ETH_ZLEN || len > port->rmtu)) {
+	if (port->tso && port->tsolen > port->rmtu)
+		maxlen = port->tsolen;
+	else
+		maxlen = port->rmtu;
+	if (unlikely(len < ETH_ZLEN || len > maxlen)) {
 		dev->stats.rx_length_errors++;
 		goto out_dropped;
 	}
@@ -731,9 +737,7 @@ ldc_ctrl:
 		vio_link_state_change(vio, event);
 
 		if (event == LDC_EVENT_RESET) {
-			port->rmtu = 0;
-			port->tso = true;
-			port->tsolen = 0;
+			vnet_port_reset(port);
 			vio_port_up(vio);
 		}
 		port->rx_event = 0;
@@ -929,36 +933,36 @@ static struct sk_buff *vnet_clean_tx_ring(struct vnet_port *port,
 
 	*pending = 0;
 
-	txi = dr->prod-1;
-	if (txi < 0)
-		txi = VNET_TX_RING_SIZE-1;
-
+	txi = dr->prod;
 	for (i = 0; i < VNET_TX_RING_SIZE; ++i) {
 		struct vio_net_desc *d;
 
-		d = vio_dring_entry(dr, txi);
-
-		if (d->hdr.state == VIO_DESC_DONE) {
-			if (port->tx_bufs[txi].skb) {
-				BUG_ON(port->tx_bufs[txi].skb->next);
+		--txi;
+		if (txi < 0)
+			txi = VNET_TX_RING_SIZE-1;
 
-				port->tx_bufs[txi].skb->next = skb;
-				skb = port->tx_bufs[txi].skb;
-				port->tx_bufs[txi].skb = NULL;
+		d = vio_dring_entry(dr, txi);
 
-				ldc_unmap(port->vio.lp,
-					  port->tx_bufs[txi].cookies,
-					  port->tx_bufs[txi].ncookies);
-			}
-			d->hdr.state = VIO_DESC_FREE;
-		} else if (d->hdr.state == VIO_DESC_READY) {
+		if (d->hdr.state == VIO_DESC_READY) {
 			(*pending)++;
-		} else if (d->hdr.state == VIO_DESC_FREE) {
-			break;
+			continue;
 		}
-		--txi;
-		if (txi < 0)
-			txi = VNET_TX_RING_SIZE-1;
+		if (port->tx_bufs[txi].skb) {
+			if (d->hdr.state != VIO_DESC_DONE)
+				pr_notice("invalid ring buffer state %d\n",
+					  d->hdr.state);
+			BUG_ON(port->tx_bufs[txi].skb->next);
+
+			port->tx_bufs[txi].skb->next = skb;
+			skb = port->tx_bufs[txi].skb;
+			port->tx_bufs[txi].skb = NULL;
+
+			ldc_unmap(port->vio.lp,
+				  port->tx_bufs[txi].cookies,
+				  port->tx_bufs[txi].ncookies);
+		} else if (d->hdr.state == VIO_DESC_FREE)
+			break;
+		d->hdr.state = VIO_DESC_FREE;
 	}
 	return skb;
 }
@@ -1633,16 +1637,9 @@ static void vnet_port_free_tx_bufs(struct vnet_port *port)
 	int i;
 
 	dr = &port->vio.drings[VIO_DRIVER_TX_RING];
-	if (dr->base) {
-		ldc_free_exp_dring(port->vio.lp, dr->base,
-				   (dr->entry_size * dr->num_entries),
-				   dr->cookies, dr->ncookies);
-		dr->base = NULL;
-		dr->entry_size = 0;
-		dr->num_entries = 0;
-		dr->pending = 0;
-		dr->ncookies = 0;
-	}
+
+	if (dr->base == NULL)
+		return;
 
 	for (i = 0; i < VNET_TX_RING_SIZE; i++) {
 		struct vio_net_desc *d;
@@ -1652,8 +1649,6 @@ static void vnet_port_free_tx_bufs(struct vnet_port *port)
 			continue;
 
 		d = vio_dring_entry(dr, i);
-		if (d->hdr.state == VIO_DESC_READY)
-			pr_warn("active transmit buffers freed\n");
 
 		ldc_unmap(port->vio.lp,
 			  port->tx_bufs[i].cookies,
@@ -1662,6 +1657,23 @@ static void vnet_port_free_tx_bufs(struct vnet_port *port)
 		port->tx_bufs[i].skb = NULL;
 		d->hdr.state = VIO_DESC_FREE;
 	}
+	ldc_free_exp_dring(port->vio.lp, dr->base,
+			   (dr->entry_size * dr->num_entries),
+			   dr->cookies, dr->ncookies);
+	dr->base = NULL;
+	dr->entry_size = 0;
+	dr->num_entries = 0;
+	dr->pending = 0;
+	dr->ncookies = 0;
+}
+
+static void vnet_port_reset(struct vnet_port *port)
+{
+	del_timer(&port->clean_timer);
+	vnet_port_free_tx_bufs(port);
+	port->rmtu = 0;
+	port->tso = true;
+	port->tsolen = 0;
 }
 
 static int vnet_port_alloc_tx_ring(struct vnet_port *port)