diff options
| author | Stephen Hemminger <stephen@networkplumber.org> | 2017-02-12 07:02:23 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-14 19:20:35 +0100 |
| commit | 6e47dd3e2938f41d75045bbcb64aa9df3a463b2a (patch) | |
| tree | f38bc54aecf8a392aba00143586ff6105e2c9f8d /drivers/hv | |
| parent | vmbus: remove conditional locking of vmbus_write (diff) | |
| download | linux-6e47dd3e2938f41d75045bbcb64aa9df3a463b2a.tar.xz linux-6e47dd3e2938f41d75045bbcb64aa9df3a463b2a.zip | |
vmbus: expose hv_begin/end_read
In order to implement NAPI in netvsc, the driver needs access to
control host interrupt mask.
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 'drivers/hv')
| -rw-r--r-- | drivers/hv/hyperv_vmbus.h | 4 | ||||
| -rw-r--r-- | drivers/hv/ring_buffer.c | 20 |
2 files changed, 0 insertions, 24 deletions
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 6a9b54677218..e15a130de3c9 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -292,10 +292,6 @@ int hv_ringbuffer_read(struct vmbus_channel *channel, void hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info, struct hv_ring_buffer_debug_info *debug_info); -void hv_begin_read(struct hv_ring_buffer_info *rbi); - -u32 hv_end_read(struct hv_ring_buffer_info *rbi); - /* * Maximum channels is determined by the size of the interrupt page * which is PAGE_SIZE. 1/2 of PAGE_SIZE is for send endpoint interrupt diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 1a1e70a45146..75c9eefd55b5 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -32,26 +32,6 @@ #include "hyperv_vmbus.h" -void hv_begin_read(struct hv_ring_buffer_info *rbi) -{ - rbi->ring_buffer->interrupt_mask = 1; - virt_mb(); -} - -u32 hv_end_read(struct hv_ring_buffer_info *rbi) -{ - - rbi->ring_buffer->interrupt_mask = 0; - virt_mb(); - - /* - * Now check to see if the ring buffer is still empty. - * If it is not, we raced and we need to process new - * incoming messages. - */ - return hv_get_bytes_to_read(rbi); -} - /* * When we write to the ring buffer, check if the host needs to * be signaled. Here is the details of this protocol: |