From: cl349@freefall.cl.cam.ac.uk <cl349@freefall.cl.cam.ac.uk>
Date: Thu, 16 Sep 2004 09:32:52 +0000 (+0000)
Subject: bitkeeper revision 1.1159.1.153 (41495dc4v3GzGJz41U0jh2uqLzhlIw)
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~17400^2~598
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22?a=commitdiff_plain;h=55d708b41c87930de009573d71b888cd45091033;p=xen.git

bitkeeper revision 1.1159.1.153 (41495dc4v3GzGJz41U0jh2uqLzhlIw)

Fix ping with large/fragmented packets from domU to dom0.
---

diff --git a/linux-2.6.8.1-xen-sparse/drivers/xen/netfront/netfront.c b/linux-2.6.8.1-xen-sparse/drivers/xen/netfront/netfront.c
index 44aa8e9dde..6de5cc51fd 100644
--- a/linux-2.6.8.1-xen-sparse/drivers/xen/netfront/netfront.c
+++ b/linux-2.6.8.1-xen-sparse/drivers/xen/netfront/netfront.c
@@ -393,11 +393,12 @@ static int network_start_xmit(struct sk_buff *skb, struct net_device *dev)
     tx->size = skb->len;
 
     wmb(); /* Ensure that backend will see the request. */
-    np->tx->req_prod = i + 1;
+    i++;
+    np->tx->req_prod = i;
 
     network_tx_buf_gc(dev);
 
-    if ( (i - np->tx_resp_cons) == (NETIF_TX_RING_SIZE - 1) )
+    if ( (i - np->tx_resp_cons) == NETIF_TX_RING_SIZE )
     {
         np->tx_full = 1;
         netif_stop_queue(dev);
@@ -410,7 +411,7 @@ static int network_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
     /* Only notify Xen if there are no outstanding responses. */
     mb();
-    if ( np->tx->resp_prod == i )
+    if ( np->tx->resp_prod != i )
         notify_via_evtchn(np->evtchn);
 
     return 0;