diff options
| author | Stephen Hemminger <stephen@networkplumber.org> | 2017-03-04 18:27:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-17 15:10:49 +0900 |
| commit | 4827ee1dca5691c9fc568883170a568db94f9b38 (patch) | |
| tree | 96f7e3d7511c8a6c8ebfbce933e3488366b074a2 /include/linux/hyperv.h | |
| parent | 2a9d7de2038e87bb2a1085ac73c4246c260263f0 (diff) | |
vmbus: expose debug info for drivers
Allow driver to get debug information about state of the ring.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/hyperv.h')
| -rw-r--r-- | include/linux/hyperv.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index de9b80ff6698..1fa727fe5f93 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -491,6 +491,12 @@ struct vmbus_channel_rescind_offer { u32 child_relid; } __packed; +static inline u32 +hv_ringbuffer_pending_size(const struct hv_ring_buffer_info *rbi) +{ + return rbi->ring_buffer->pending_send_sz; +} + /* * Request Offer -- no parameters, SynIC message contains the partition ID * Set Snoop -- no parameters, SynIC message contains the partition ID @@ -1148,6 +1154,17 @@ static inline void *hv_get_drvdata(struct hv_device *dev) return dev_get_drvdata(&dev->device); } +struct hv_ring_buffer_debug_info { + u32 current_interrupt_mask; + u32 current_read_index; + u32 current_write_index; + u32 bytes_avail_toread; + u32 bytes_avail_towrite; +}; + +void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info, + struct hv_ring_buffer_debug_info *debug_info); + /* Vmbus interface */ #define vmbus_driver_register(driver) \ __vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) |