summaryrefslogtreecommitdiff
path: root/include/linux/hyperv.h
diff options
context:
space:
mode:
authorStephen Hemminger <sthemmin@microsoft.com>2016-08-23 22:17:48 +0300
committerDavid S. Miller <davem@davemloft.net>2016-08-23 22:05:36 +0300
commit30d1de08c87ddde6f73936c3350e7e153988fe02 (patch)
tree5a4a6a71197554762f5deec5909cfbc1e0c308f6 /include/linux/hyperv.h
parent796cc88c32c1bd1f833d596448ac785a8736e57c (diff)
downloadlinux-30d1de08c87ddde6f73936c3350e7e153988fe02.tar.xz
hv_netvsc: make inline functions static
Several new functions were introduced into hyperv.h but only used in one file. Move them and let compiler decide on inline. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/hyperv.h')
-rw-r--r--include/linux/hyperv.h84
1 files changed, 0 insertions, 84 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index b10954a66939..a6bc974def8f 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1422,88 +1422,4 @@ static inline bool hv_need_to_signal_on_read(struct hv_ring_buffer_info *rbi)
return false;
}
-/*
- * An API to support in-place processing of incoming VMBUS packets.
- */
-#define VMBUS_PKT_TRAILER 8
-
-static inline struct vmpacket_descriptor *
-get_next_pkt_raw(struct vmbus_channel *channel)
-{
- struct hv_ring_buffer_info *ring_info = &channel->inbound;
- u32 read_loc = ring_info->priv_read_index;
- void *ring_buffer = hv_get_ring_buffer(ring_info);
- struct vmpacket_descriptor *cur_desc;
- u32 packetlen;
- u32 dsize = ring_info->ring_datasize;
- u32 delta = read_loc - ring_info->ring_buffer->read_index;
- u32 bytes_avail_toread = (hv_get_bytes_to_read(ring_info) - delta);
-
- if (bytes_avail_toread < sizeof(struct vmpacket_descriptor))
- return NULL;
-
- if ((read_loc + sizeof(*cur_desc)) > dsize)
- return NULL;
-
- cur_desc = ring_buffer + read_loc;
- packetlen = cur_desc->len8 << 3;
-
- /*
- * If the packet under consideration is wrapping around,
- * return failure.
- */
- if ((read_loc + packetlen + VMBUS_PKT_TRAILER) > (dsize - 1))
- return NULL;
-
- return cur_desc;
-}
-
-/*
- * A helper function to step through packets "in-place"
- * This API is to be called after each successful call
- * get_next_pkt_raw().
- */
-static inline void put_pkt_raw(struct vmbus_channel *channel,
- struct vmpacket_descriptor *desc)
-{
- struct hv_ring_buffer_info *ring_info = &channel->inbound;
- u32 read_loc = ring_info->priv_read_index;
- u32 packetlen = desc->len8 << 3;
- u32 dsize = ring_info->ring_datasize;
-
- if ((read_loc + packetlen + VMBUS_PKT_TRAILER) > dsize)
- BUG();
- /*
- * Include the packet trailer.
- */
- ring_info->priv_read_index += packetlen + VMBUS_PKT_TRAILER;
-}
-
-/*
- * This call commits the read index and potentially signals the host.
- * Here is the pattern for using the "in-place" consumption APIs:
- *
- * while (get_next_pkt_raw() {
- * process the packet "in-place";
- * put_pkt_raw();
- * }
- * if (packets processed in place)
- * commit_rd_index();
- */
-static inline void commit_rd_index(struct vmbus_channel *channel)
-{
- struct hv_ring_buffer_info *ring_info = &channel->inbound;
- /*
- * Make sure all reads are done before we update the read index since
- * the writer may start writing to the read area once the read index
- * is updated.
- */
- virt_rmb();
- ring_info->ring_buffer->read_index = ring_info->priv_read_index;
-
- if (hv_need_to_signal_on_read(ring_info))
- vmbus_set_event(channel);
-}
-
-
#endif /* _HYPERV_H */