Signed-off-by: David Hunt <redacted>
---
 lib/librte_distributor/rte_distributor_private.h | 61 ++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/lib/librte_distributor/rte_distributor_private.h b/lib/librte_distributor/rte_distributor_private.h
index 2d85b9b..c8e0f98 100644
--- a/lib/librte_distributor/rte_distributor_private.h
+++ b/lib/librte_distributor/rte_distributor_private.h

@@ -129,6 +129,67 @@ struct rte_distributor_v20 {
 	struct rte_distributor_returned_pkts returns;
 };
 
+/* All different signature compare functions */
+enum rte_distributor_match_function {
+	RTE_DIST_MATCH_SCALAR = 0,
+	RTE_DIST_MATCH_VECTOR,
+	RTE_DIST_NUM_MATCH_FNS
+};
+
+/**
+ * Buffer structure used to pass the pointer data between cores. This is cache
+ * line aligned, but to improve performance and prevent adjacent cache-line
+ * prefetches of buffers for other workers, e.g. when worker 1's buffer is on
+ * the next cache line to worker 0, we pad this out to two cache lines.
+ * We can pass up to 8 mbufs at a time in one cacheline.
+ * There is a separate cacheline for returns in the burst API.
+ */
+struct rte_distributor_buffer {
+	volatile int64_t bufptr64[RTE_DIST_BURST_SIZE]
+			__rte_cache_aligned; /* <= outgoing to worker */
+
+	int64_t pad1 __rte_cache_aligned;    /* <= one cache line  */
+
+	volatile int64_t retptr64[RTE_DIST_BURST_SIZE]
+			__rte_cache_aligned; /* <= incoming from worker */
+
+	int64_t pad2 __rte_cache_aligned;    /* <= one cache line  */
+
+	int count __rte_cache_aligned;       /* <= number of current mbufs */
+};