Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-09 Thread Luis Henriques
On Mon, Dec 08, 2014 at 11:11:15AM +, David Vrabel wrote: On 08/12/14 10:19, Luis Henriques wrote: On Mon, Dec 01, 2014 at 09:55:24AM +0100, Stefan Bader wrote: On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known problem with the netfront/netback interface: if the guest

Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-08 Thread Luis Henriques
On Mon, Dec 01, 2014 at 09:55:24AM +0100, Stefan Bader wrote: On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known problem with the netfront/netback interface: if the guest tries to send a packet which constitues more than MAX_SKB_FRAGS + 1 ring slots, it gets dropped. The

Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-08 Thread David Vrabel
On 08/12/14 10:19, Luis Henriques wrote: On Mon, Dec 01, 2014 at 09:55:24AM +0100, Stefan Bader wrote: On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known problem with the netfront/netback interface: if the guest tries to send a packet which constitues more than MAX_SKB_FRAGS + 1

Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-08 Thread Stefan Bader
On 08.12.2014 12:11, David Vrabel wrote: On 08/12/14 10:19, Luis Henriques wrote: On Mon, Dec 01, 2014 at 09:55:24AM +0100, Stefan Bader wrote: On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known problem with the netfront/netback interface: if the guest tries to send a packet

Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-08 Thread David Vrabel
On 08/12/14 11:21, Stefan Bader wrote: On 08.12.2014 12:11, David Vrabel wrote: On 08/12/14 10:19, Luis Henriques wrote: On Mon, Dec 01, 2014 at 09:55:24AM +0100, Stefan Bader wrote: On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known problem with the netfront/netback interface: if

Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-08 Thread Stefan Bader
On 08.12.2014 12:31, David Vrabel wrote: On 08/12/14 11:21, Stefan Bader wrote: On 08.12.2014 12:11, David Vrabel wrote: On 08/12/14 10:19, Luis Henriques wrote: On Mon, Dec 01, 2014 at 09:55:24AM +0100, Stefan Bader wrote: On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known

Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-01 Thread Stefan Bader
On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known problem with the netfront/netback interface: if the guest tries to send a packet which constitues more than MAX_SKB_FRAGS + 1 ring slots, it gets dropped. The reason is that netback maps these slots to a frag in the frags array,

Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-01 Thread David Vrabel
On 01/12/14 08:55, Stefan Bader wrote: On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known problem with the netfront/netback interface: if the guest tries to send a packet which constitues more than MAX_SKB_FRAGS + 1 ring slots, it gets dropped. The reason is that netback maps

Re: [Xen-devel] [PATCH] xen-netfront: Fix handling packets on compound pages with skb_linearize

2014-12-01 Thread Zoltan Kiss
On 01/12/14 13:36, David Vrabel wrote: On 01/12/14 08:55, Stefan Bader wrote: On 11.08.2014 19:32, Zoltan Kiss wrote: There is a long known problem with the netfront/netback interface: if the guest tries to send a packet which constitues more than MAX_SKB_FRAGS + 1 ring slots, it gets