Hi:
[NET] front: Added feature-rx-notify
This patch adds support to the frontend for notifying the backend whenever
the rx ring is refilled. This is required in order for the backend to get
a tx queue.
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
diff -r c42c1f4bd148 -r b41da4470aa6 
linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c
--- a/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c Fri Jul 28 
18:11:09 2006 +1000
+++ b/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c Fri Jul 28 
18:11:21 2006 +1000
@@ -326,6 +326,12 @@ again:
 goto abort_transaction;
 }
 
+ err = xenbus_printf(xbt, dev->nodename, "feature-rx-notify", "%d", 1);
+ if (err) {
+ message = "writing feature-rx-notify";
+ goto abort_transaction;
+ }
+
 err = xenbus_transaction_end(xbt, 0);
 if (err) {
 if (err == -EAGAIN)
@@ -683,6 +689,7 @@ static void network_alloc_rx_buffers(str
 np->rx.req_prod_pvt = req_prod + i;
 push:
 RING_PUSH_REQUESTS(&np->rx);
+ notify_remote_via_irq(np->irq);
 }
 
 static void xennet_make_frags(struct sk_buff *skb, struct net_device *dev,
@@ -1221,7 +1228,6 @@ static void network_connect(struct net_d
 * packets.
 */
 netif_carrier_on(dev);
- notify_remote_via_irq(np->irq);
 network_tx_buf_gc(dev);
 network_alloc_rx_buffers(dev);
 
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