Signed-off-by: Bill Fischofer <bill.fischo...@linaro.org>
---
platform/linux-generic/include/odp_packet_internal.h | 19 +++++++++++++++++++
platform/linux-generic/odp_packet.c | 10 ++++++++++
2 files changed, 29 insertions(+)
diff --git a/platform/linux-generic/include/odp_packet_internal.h
b/platform/linux-generic/include/odp_packet_internal.h
index 31d46df..39deae2 100644
--- a/platform/linux-generic/include/odp_packet_internal.h
+++ b/platform/linux-generic/include/odp_packet_internal.h
@@ -196,6 +196,25 @@ static inline uint32_t packet_len(odp_packet_hdr_t
*pkt_hdr)
return pkt_hdr->frame_len;
}
+static inline uint32_t packet_ref_count(odp_packet_hdr_t *pkt_hdr)
+{
+ /* Breach the atomic type to do a peek at the ref count. This
+ * is used to bypass atomic operations if ref_count == 1 for
+ * performance reasons.
+ */
+ return pkt_hdr->ref_count.v;
+}
+
+static inline void packet_ref_count_set(odp_packet_hdr_t *pkt_hdr, uint32_t n)
+{
+ /* Only used during init when there are no other possible
+ * references to this pkt, so avoid the "atomic" overhead by
+ * a controlled breach of the atomic type here. This saves
+ * over 10% of the pathlength in routines like packet_alloc().
+ */
+ pkt_hdr->ref_count.v = n;
+}
+
static inline void packet_set_len(odp_packet_hdr_t *pkt_hdr, uint32_t len)
{
pkt_hdr->frame_len = len;
diff --git a/platform/linux-generic/odp_packet.c
b/platform/linux-generic/odp_packet.c
index 067d0fc..4bbb619 100644
--- a/platform/linux-generic/odp_packet.c
+++ b/platform/linux-generic/odp_packet.c
@@ -57,6 +57,16 @@ static inline odp_buffer_t buffer_handle(odp_packet_hdr_t
*pkt_hdr)
return pkt_hdr->buf_hdr.handle.handle;
}
+static inline uint32_t packet_ref_inc(odp_packet_hdr_t *pkt_hdr)
+{
+ return odp_atomic_fetch_inc_u32(&pkt_hdr->ref_count);
+}
+
+static inline uint32_t packet_ref_dec(odp_packet_hdr_t *pkt_hdr)
+{
+ return odp_atomic_fetch_dec_u32(&pkt_hdr->ref_count);
+}
+
static inline odp_packet_hdr_t *buf_to_packet_hdr(odp_buffer_t buf)
{
return (odp_packet_hdr_t *)buf_hdl_to_hdr(buf);
--
2.5.0
