> -----Original Message----- > From: devel [mailto:driverdev-devel-bounces@xxxxxxxxxxxxxxxxxxxxxx] On > Behalf Of KY Srinivasan > Sent: Tuesday, February 3, 2015 11:24 AM > To: Stephen Hemminger; Haiyang Zhang > Cc: devel@xxxxxxxxxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx > Subject: RE: [PATCH] hyper-v: allow access to vmbus from userspace driver > > > > > -----Original Message----- > > From: Stephen Hemminger [mailto:stephen@xxxxxxxxxxxxxxxxxx] > > Sent: Tuesday, February 3, 2015 11:04 AM > > To: KY Srinivasan; Haiyang Zhang > > Cc: devel@xxxxxxxxxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx > > Subject: [PATCH] hyper-v: allow access to vmbus from userspace driver > > > > Brocade is submitting a hyper-v driver for DPDK <dev@xxxxxxxx> but > > this driver needs a hook in the hyper-v bus layer to allow the > > additional hv_uio driver to access the shared vmbus pages. The hv_uio > > driver lives in DPDK (like > > igb_uio) and provides userspace access to raw network packets. > > > > Signed-off-by: Stas Egorov <segorov@xxxxxxxxxxxx> > > Signed-off-by: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx> > > > > --- > > drivers/hv/connection.c | 20 +++++++++++++++++--- > > include/linux/hyperv.h | 3 +++ > > 2 files changed, 20 insertions(+), 3 deletions(-) > > > > --- a/drivers/hv/connection.c 2015-02-03 10:58:51.751752450 -0800 > > +++ b/drivers/hv/connection.c 2015-02-03 10:58:51.751752450 -0800 > > @@ -64,6 +64,21 @@ static __u32 vmbus_get_next_version(__u3 > > } > > } > > > > +static const uuid_le HV_NET_GUID = { > > + .b = { > > + 0x63, 0x51, 0x61, 0xf8, 0x3e, 0xdf, 0xc5, 0x46, > > + 0x91, 0x3f, 0xf2, 0xd2, 0xf9, 0x65, 0xed, 0x0e > > + } > > +}; > > + > > We already have this guid defined in linux/hyperv.h; look at HV_NIC_GUID. > > > +void vmbus_get_pages(unsigned long *int_page, unsigned long > > +monitor_pages[2]) { > > + *int_page = (unsigned long)vmbus_connection.int_page; > > + monitor_pages[0] = (unsigned > > long)vmbus_connection.monitor_pages[0]; > > + monitor_pages[1] = (unsigned > > long)vmbus_connection.monitor_pages[1]; > > +} > > +EXPORT_SYMBOL_GPL(vmbus_get_pages); vmbus_get_pages() is too generic. Perhaps vmbus_get_monitor_pages() may be a better name for this function. Regards, K. Y _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
