qcacmn: Add TX completion ring desc sanity check

Suspect HW update WBM2SW ring HP, but the ring entry contents are
not updated accordingly which then host will fetch one stale ring entry,
this makes other TX packet are freed unexpectedlly.

Add change to detect this situation earlier, if HW cookie conversion is
done, then invalidate 2nd dword for upper 32bits of VA, so next time when
reap this ring entry contents to know if this desc is updated by
HW or not. if HW cookie conversion is not done, then compare the PA in
buff_addr_info with PA in current TX desc to check.

Change-Id: I351eb4f860216fc618ff28736d4832fcec45dcc5
CRs-Fixed: 3345935

dp/wifi3.0/dp_stats.c

@@ -7165,6 +7165,8 @@ void dp_txrx_path_stats(struct dp_soc *soc)
 
 		DP_PRINT_STATS("Invalid release source: %u",
 			       soc->stats.tx.invalid_release_source);
+		DP_PRINT_STATS("Invalid TX desc from completion ring: %u",
+			       soc->stats.tx.invalid_tx_comp_desc);
 		DP_PRINT_STATS("Dropped in host:");
 		DP_PRINT_STATS("Total packets dropped: %u,",
 			       pdev->stats.tx_i.dropped.dropped_pkt.num);
@@ -7714,6 +7716,8 @@ dp_print_soc_tx_stats(struct dp_soc *soc)
 		       soc->stats.tx.tcl_ring_full[3]);
 	DP_PRINT_STATS("Tx invalid completion release = %u",
 		       soc->stats.tx.invalid_release_source);
+	DP_PRINT_STATS("TX invalid Desc from completion ring = %u",
+		       soc->stats.tx.invalid_tx_comp_desc);
 	DP_PRINT_STATS("Tx comp wbm internal error = %d : [%d %d %d %d]",
 		       soc->stats.tx.wbm_internal_error[WBM_INT_ERROR_ALL],
 		       soc->stats.tx.wbm_internal_error[WBM_INT_ERROR_REO_NULL_BUFFER],
@@ -8860,6 +8864,8 @@ QDF_STATUS dp_txrx_get_soc_stats(struct cdp_soc_t *soc_hdl,
 	soc_stats->tx.dropped_fw_removed = soc->stats.tx.dropped_fw_removed;
 	soc_stats->tx.invalid_release_source =
 					soc->stats.tx.invalid_release_source;
+	soc_stats->tx.invalid_tx_comp_desc =
+					soc->stats.tx.invalid_tx_comp_desc;
 	for (inx = 0; inx < CDP_MAX_WIFI_INT_ERROR_REASONS; inx++)
 		soc_stats->tx.wifi_internal_error[inx] =
 					soc->stats.tx.wbm_internal_error[inx];