This is enables the hyper-v driver for DPDK <dev at dpdk.org>.
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 <segorov at mirantis.com>
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
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;
