xen-changelog

[Top] [All Lists]

[Xen-changelog] Fix the request size for a full page-sized skbuff in net

from [Xen patchbot -3 . 0-testing]

[Permanent Link][Original]

To:	xen-changelog@xxxxxxxxxxxxxxxxxxx
Subject:	[Xen-changelog] Fix the request size for a full page-sized skbuff in netfront
From:	Xen patchbot -3.0-testing <patchbot-3.0-testing@xxxxxxxxxxxxxxxxxxx>
Date:	Fri, 09 Dec 2005 10:06:17 +0000
Delivery-date:	Fri, 09 Dec 2005 10:09:23 +0000
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
List-help:	<mailto:xen-changelog-request@lists.xensource.com?subject=help>
List-id:	BK change log <xen-changelog.lists.xensource.com>
List-post:	<mailto:xen-changelog@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-changelog>, <mailto:xen-changelog-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-changelog>, <mailto:xen-changelog-request@lists.xensource.com?subject=unsubscribe>
Reply-to:	xen-devel@xxxxxxxxxxxxxxxxxxx
Sender:	xen-changelog-bounces@xxxxxxxxxxxxxxxxxxx

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID d64dbb48684c4a6cc84f778a4faf1ba7fc75b9f0
# Parent  7a03820bbbf32636ee539d6fca9ae45c25a84b78
Fix the request size for a full page-sized skbuff in netfront
driver (must allow 16 bytes for dev_alloc_skb headroom).

Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>

xen-unstable cset: c976c1ff806aa46c989fb5b1d84b311519fb0456
committer: Robert Read <robert@xxxxxxxxxxxxx>

diff -r 7a03820bbbf3 -r d64dbb48684c 
linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c
--- a/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c      Tue Dec  6 
06:02:54 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c      Tue Dec  6 
06:52:15 2005
@@ -535,8 +535,12 @@
         */
        batch_target = np->rx_target - (req_prod - np->rx.rsp_cons);
        for (i = skb_queue_len(&np->rx_batch); i < batch_target; i++) {
+               /*
+                * Subtract dev_alloc_skb headroom (16 bytes) and shared info
+                * tailroom then round down to SKB_DATA_ALIGN boundary.
+                */
                skb = alloc_xen_skb(
-                       (PAGE_SIZE - sizeof(struct skb_shared_info)) &
+                       (PAGE_SIZE - 16 - sizeof(struct skb_shared_info)) &
                        (-SKB_DATA_ALIGN(1)));
                if (skb == NULL)
                        break;

_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog

[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-changelog] Fix the request size for a full page-sized skbuff in netfront, Xen patchbot -unstable [Xen-changelog] Fix the request size for a full page-sized skbuff in netfront, Xen patchbot -3 . 0-testing <=

Previous by Date:	[Xen-changelog] Fix netfront to accept received packets at a wider range of, Xen patchbot -3 . 0-testing
Next by Date:	[Xen-changelog] Make the master fd belonging to the pty pair non-blocking. Writes were blocking, Xen patchbot -3 . 0-testing
Previous by Thread:	[Xen-changelog] Fix the request size for a full page-sized skbuff in netfront, Xen patchbot -unstable
Next by Thread:	[Xen-changelog] Add map_domain_pages/unmap_domain_pages to map contiguous, Xen patchbot -unstable
Indexes:	[Date] [Thread] [Top] [All Lists]