From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: [PATCH net-next v2] hyper-v: allow access to vmbus from userspace driver Date: Wed, 4 Feb 2015 15:20:29 -0800 Message-ID: <20150204152029.65f02d64@urahara> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: dev-VfR2kkLFssw@public.gmane.org, devel-tBiZLqfeLfOHmIFyCCdPziST3g8Odh+X@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: KY Srinivasan , Haiyang Zhang Return-path: List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" This is enables the hyper-v driver for DPDK . The hv_uio driver needs to access the shared vmbus monitor pages. I would also like to put hv_uio in upstream kernel like other uio drivers, but need to get API accepted with DPDK first. Signed-off-by: Stas Egorov Signed-off-by: Stephen Hemminger --- v2 - simplify and rename to vmbus_get_monitor_pages 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 2015-02-04 14:59:51.636194383 -0800 @@ -64,6 +64,15 @@ static __u32 vmbus_get_next_version(__u3 } } +void vmbus_get_monitor_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_monitor_pages); + static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo, __u32 version) { @@ -347,10 +356,7 @@ static void process_chn_event(u32 relid) else bytes_to_read = 0; } while (read_state && (bytes_to_read != 0)); - } else { - pr_err("no channel callback for relid - %u\n", relid); } - } /* --- a/include/linux/hyperv.h 2015-02-03 10:58:51.751752450 -0800 +++ b/include/linux/hyperv.h 2015-02-04 15:00:26.388355012 -0800 @@ -868,6 +868,9 @@ extern int vmbus_recvpacket_raw(struct v extern void vmbus_ontimer(unsigned long data); +extern void vmbus_get_monitor_pages(unsigned long *int_page, + unsigned long monitor_pages[2]); + /* Base driver object */ struct hv_driver { const char *name;