4 files changed, 2 insertions, 50 deletions

diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h
index b38fb2cf3364..0ba59106b1a5 100644
--- a/drivers/net/xen-netback/common.h
+++ b/drivers/net/xen-netback/common.h
@@ -260,7 +260,6 @@ struct xenvif {
 
 	/* Frontend feature information. */
 	int gso_mask;
-	int gso_prefix_mask;
 
 	u8 can_sg:1;
 	u8 ip_csum:1;
diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
index fb50c6d5f6c3..211d542a830b 100644
--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -319,9 +319,9 @@ static netdev_features_t xenvif_fix_features(struct net_device *dev,
 
 	if (!vif->can_sg)
 		features &= ~NETIF_F_SG;
-	if (~(vif->gso_mask | vif->gso_prefix_mask) & GSO_BIT(TCPV4))
+	if (~(vif->gso_mask) & GSO_BIT(TCPV4))
 		features &= ~NETIF_F_TSO;
-	if (~(vif->gso_mask | vif->gso_prefix_mask) & GSO_BIT(TCPV6))
+	if (~(vif->gso_mask) & GSO_BIT(TCPV6))
 		features &= ~NETIF_F_TSO6;
 	if (!vif->ip_csum)
 		features &= ~NETIF_F_IP_CSUM;
diff --git a/drivers/net/xen-netback/rx.c b/drivers/net/xen-netback/rx.c
index 03836aaac1c2..6bd7d6e84b8e 100644
--- a/drivers/net/xen-netback/rx.c
+++ b/drivers/net/xen-netback/rx.c
@@ -347,16 +347,6 @@ static int xenvif_gop_skb(struct sk_buff *skb,
 			gso_type = XEN_NETIF_GSO_TYPE_TCPV6;
 	}
 
-	/* Set up a GSO prefix descriptor, if necessary */
-	if ((1 << gso_type) & vif->gso_prefix_mask) {
-		RING_COPY_REQUEST(&queue->rx, queue->rx.req_cons++, &req);
-		meta = npo->meta + npo->meta_prod++;
-		meta->gso_type = gso_type;
-		meta->gso_size = skb_shinfo(skb)->gso_size;
-		meta->size = 0;
-		meta->id = req.id;
-	}
-
 	RING_COPY_REQUEST(&queue->rx, queue->rx.req_cons++, &req);
 	meta = npo->meta + npo->meta_prod++;
 
@@ -511,22 +501,6 @@ static void xenvif_rx_action(struct xenvif_queue *queue)
 	while ((skb = __skb_dequeue(&rxq)) != NULL) {
 		struct xen_netif_extra_info *extra = NULL;
 
-		if ((1 << queue->meta[npo.meta_cons].gso_type) &
-		    vif->gso_prefix_mask) {
-			resp = RING_GET_RESPONSE(&queue->rx,
-						 queue->rx.rsp_prod_pvt++);
-
-			resp->flags = XEN_NETRXF_gso_prefix |
-				      XEN_NETRXF_more_data;
-
-			resp->offset = queue->meta[npo.meta_cons].gso_size;
-			resp->id = queue->meta[npo.meta_cons].id;
-			resp->status = XENVIF_RX_CB(skb)->meta_slots_used;
-
-			npo.meta_cons++;
-			XENVIF_RX_CB(skb)->meta_slots_used--;
-		}
-
 		queue->stats.tx_bytes += skb->len;
 		queue->stats.tx_packets++;
 
diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
index daf4c7867102..7056404e3cb8 100644
--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -1135,7 +1135,6 @@ static int read_xenbus_vif_flags(struct backend_info *be)
 	vif->can_sg = !!val;
 
 	vif->gso_mask = 0;
-	vif->gso_prefix_mask = 0;
 
 	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-gso-tcpv4",
 			 "%d", &val) < 0)
@@ -1143,32 +1142,12 @@ static int read_xenbus_vif_flags(struct backend_info *be)
 	if (val)
 		vif->gso_mask |= GSO_BIT(TCPV4);
 
-	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-gso-tcpv4-prefix",
-			 "%d", &val) < 0)
-		val = 0;
-	if (val)
-		vif->gso_prefix_mask |= GSO_BIT(TCPV4);
-
 	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-gso-tcpv6",
 			 "%d", &val) < 0)
 		val = 0;
 	if (val)
 		vif->gso_mask |= GSO_BIT(TCPV6);
 
-	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-gso-tcpv6-prefix",
-			 "%d", &val) < 0)
-		val = 0;
-	if (val)
-		vif->gso_prefix_mask |= GSO_BIT(TCPV6);
-
-	if (vif->gso_mask & vif->gso_prefix_mask) {
-		xenbus_dev_fatal(dev, err,
-				 "%s: gso and gso prefix flags are not "
-				 "mutually exclusive",
-				 dev->otherend);
-		return -EOPNOTSUPP;
-	}
-
 	if (xenbus_scanf(XBT_NIL, dev->otherend, "feature-no-csum-offload",
 			 "%d", &val) < 0)
 		val = 0;