[dpdk-dev] [PATCH v2 7/7] hv: add kernel patch

[KY Srinivasan]

> -----Original Message-----
> From: Stephen Hemminger [mailto:stephen at networkplumber.org]
> Sent: Wednesday, March 25, 2015 11:11 AM
> To: simonxiaolinux at hotmail.com; Alexander Malysh; KY Srinivasan
> Cc: dev at dpdk.org; Stephen Hemminger
> Subject: [PATCH v2 7/7] hv: add kernel patch
> 
> From: Stephen Hemminger <stephen at networkplumber.org>
> 
> For users using non latest kernels, put kernel patch in for
> them to use.
> 
> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> ---
>  .../linuxapp/hv_uio/vmbus-get-pages.patch          | 53
> ++++++++++++++++++++++
>  1 file changed, 53 insertions(+)
>  create mode 100644 lib/librte_eal/linuxapp/hv_uio/vmbus-get-pages.patch
> 
> diff --git a/lib/librte_eal/linuxapp/hv_uio/vmbus-get-pages.patch
> b/lib/librte_eal/linuxapp/hv_uio/vmbus-get-pages.patch
> new file mode 100644
> index 0000000..e1a4b13
> --- /dev/null
> +++ b/lib/librte_eal/linuxapp/hv_uio/vmbus-get-pages.patch
> @@ -0,0 +1,53 @@
> +hyper-v: allow access to vmbus from userspace driver
> +
> +This is patch from  to allow access to hyper-v vmbus from UIO driver.
> +
> +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
> ++++ b/drivers/hv/connection.c
> +@@ -64,6 +64,15 @@
> + 	}
> + }
> +
> ++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)
> + {
> +@@ -327,8 +336,6 @@
> + 			else
> + 				bytes_to_read = 0;
> + 		} while (read_state && (bytes_to_read != 0));
> +-	} else {
> +-		pr_err("no channel callback for relid - %u\n", relid);
> + 	}
> +
> + 	spin_unlock_irqrestore(&channel->inbound_lock, flags);
> +--- a/include/linux/hyperv.h
> ++++ b/include/linux/hyperv.h
> +@@ -1162,6 +1162,9 @@
> +
> + 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;

Are you basing this on the current Greg's tree.

K. Y
> --
> 2.1.4