qcacmn: Add history to track the entries in rx rings

The rx rings are relatively of smaller size. Any
duplicate entry sent by hardware cannot be back-tracked
by just looking at the ring contents alone.

Hence add a history to track the entries for the
REO2SW, REO exception and SW2REO ring.

Change-Id: I9b0b311950d60a9421378ce0fcc0535be450f713
CRs-Fixed: 2739181

dp/wifi3.0/dp_internal.h

@@ -2242,6 +2242,24 @@ void dp_set_max_page_size(struct qdf_mem_multi_page_t *pages,
 }
 #endif /* MAX_ALLOC_PAGE_SIZE */
 
+/**
+ * dp_history_get_next_index() - get the next entry to record an entry
+ *				 in the history.
+ * @curr_idx: Current index where the last entry is written.
+ * @max_entries: Max number of entries in the history
+ *
+ * This function assumes that the max number os entries is a power of 2.
+ *
+ * Returns: The index where the next entry is to be written.
+ */
+static inline uint32_t dp_history_get_next_index(qdf_atomic_t *curr_idx,
+						 uint32_t max_entries)
+{
+	uint32_t idx = qdf_atomic_inc_return(curr_idx);
+
+	return idx & (max_entries - 1);
+}
+
 /**
  * dp_rx_skip_tlvs() - Skip TLVs len + L2 hdr_offset, save in nbuf->cb
  * @nbuf: nbuf cb to be updated