Messages in this thread | | | Date | Tue, 04 Mar 2014 21:17:46 -0500 | Subject | Re: [Xen-devel] [PATCH net-next v6 8/10] xen-netback: Add stat counters for frag_list skbs | From | Konrad Rzeszutek Wilk <> |
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On Mar 4, 2014 5:32 PM, Zoltan Kiss <zoltan.kiss@citrix.com> wrote: > > These counters help determine how often the guest sends a packet with more > than MAX_SKB_FRAGS frags. > > NOTE: if bisect brought you here, you should apply the series up until #9,
s/#9/"the name of the patch.."
> otherwise malicious guests can block other guests by not releasing their sent > packets. > > Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com> > --- > drivers/net/xen-netback/common.h | 1 + > drivers/net/xen-netback/interface.c | 7 +++++++ > drivers/net/xen-netback/netback.c | 1 + > 3 files changed, 9 insertions(+) > > diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h > index eac171e..d8a2298 100644 > --- a/drivers/net/xen-netback/common.h > +++ b/drivers/net/xen-netback/common.h > @@ -170,6 +170,7 @@ struct xenvif { > unsigned long tx_zerocopy_sent; > unsigned long tx_zerocopy_success; > unsigned long tx_zerocopy_fail; > + unsigned long tx_frag_overflow; > > /* Miscellaneous private stuff. */ > struct net_device *dev; > diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c > index adfed30..ba5be2f 100644 > --- a/drivers/net/xen-netback/interface.c > +++ b/drivers/net/xen-netback/interface.c > @@ -252,6 +252,13 @@ static const struct xenvif_stat { > "tx_zerocopy_fail", > offsetof(struct xenvif, tx_zerocopy_fail) > }, > + /* Number of packets exceeding MAX_SKB_FRAG slots. You should use > + * a guest with the same MAX_SKB_FRAG > + */ > + { > + "tx_frag_overflow", > + offsetof(struct xenvif, tx_frag_overflow) > + }, > }; > > static int xenvif_get_sset_count(struct net_device *dev, int string_set) > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel
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