[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH net-next v6 8/10] xen-netback: Add stat counters for frag_list skbs
On Mar 4, 2014 5:32 PM, Zoltan Kiss <zoltan.kiss@xxxxxxxxxx> 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@xxxxxxxxxx> > --- > drivers/net/xen-netback/common.hÂÂÂ |ÂÂÂ 1 + > drivers/net/xen-netback/interface.c |ÂÂÂ 7 +++++++ > drivers/net/xen-netback/netback.cÂÂ |ÂÂÂ 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@xxxxxxxxxxxxx > http://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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