Re: [Xen-devel] [PATCHv1 net] xen-netback: require fewer guest Rx slots when not using GSO

2015-09-15 Thread David Miller
From: David Vrabel Date: Tue, 15 Sep 2015 11:30:17 +0100 > This is causing regressions with certain frontend drivers. Can you > drop it, please? All patches applied to my tree are part of the permanent record, and this one even made it's way to Linus already I think. So what you need to do is

Re: [Xen-devel] [PATCHv1 net] xen-netback: require fewer guest Rx slots when not using GSO

2015-09-15 Thread David Vrabel
On 09/09/15 20:34, David Miller wrote: > From: David Vrabel > Date: Tue, 8 Sep 2015 14:25:14 +0100 > >> Commit f48da8b14d04ca87ffcffe68829afd45f926ec6a (xen-netback: fix >> unlimited guest Rx internal queue and carrier flapping) introduced a >> regression. >> >> The PV frontend in IPXE only place

Re: [Xen-devel] [PATCHv1 net] xen-netback: require fewer guest Rx slots when not using GSO

2015-09-10 Thread David Vrabel
On 09/09/15 20:34, Konrad Rzeszutek Wilk wrote: > On Tue, Sep 08, 2015 at 02:25:14PM +0100, David Vrabel wrote: >> Commit f48da8b14d04ca87ffcffe68829afd45f926ec6a (xen-netback: fix >> unlimited guest Rx internal queue and carrier flapping) introduced a >> regression. >> >> The PV frontend in IPXE o

Re: [PATCHv1 net] xen-netback: require fewer guest Rx slots when not using GSO

2015-09-09 Thread David Miller
From: David Vrabel Date: Tue, 8 Sep 2015 14:25:14 +0100 > Commit f48da8b14d04ca87ffcffe68829afd45f926ec6a (xen-netback: fix > unlimited guest Rx internal queue and carrier flapping) introduced a > regression. > > The PV frontend in IPXE only places 4 requests on the guest Rx ring. > Since netbac

Re: [Xen-devel] [PATCHv1 net] xen-netback: require fewer guest Rx slots when not using GSO

2015-09-09 Thread Konrad Rzeszutek Wilk
On Tue, Sep 08, 2015 at 02:25:14PM +0100, David Vrabel wrote: > Commit f48da8b14d04ca87ffcffe68829afd45f926ec6a (xen-netback: fix > unlimited guest Rx internal queue and carrier flapping) introduced a > regression. > > The PV frontend in IPXE only places 4 requests on the guest Rx ring. in IPXE ?

Re: [PATCHv1 net] xen-netback: require fewer guest Rx slots when not using GSO

2015-09-09 Thread Wei Liu
On Tue, Sep 08, 2015 at 02:25:14PM +0100, David Vrabel wrote: > Commit f48da8b14d04ca87ffcffe68829afd45f926ec6a (xen-netback: fix > unlimited guest Rx internal queue and carrier flapping) introduced a > regression. > > The PV frontend in IPXE only places 4 requests on the guest Rx ring. > Since ne

[PATCHv1 net] xen-netback: require fewer guest Rx slots when not using GSO

2015-09-08 Thread David Vrabel
Commit f48da8b14d04ca87ffcffe68829afd45f926ec6a (xen-netback: fix unlimited guest Rx internal queue and carrier flapping) introduced a regression. The PV frontend in IPXE only places 4 requests on the guest Rx ring. Since netback required at least (MAX_SKB_FRAGS + 1) slots, IPXE could not receive