qcacmn: limit tx completion process count to napi quota

Tx completion is processed in napi context, which should follow
napi's max quota, otherwise once process count is over napi quota,
it will trigger napi repoll in kernel, meanwhile by current design,
tx completion hard irq will be enabled when the 1st napi process
finished, in such case 2nd napi process will conflict with repoll process,
finally trigger kernel side napi list crash.

Since napi quota is used in serval cases, while for tx completion
process, we want to process tx completion count as many as possbile
in one cycle, set 64k transmit frames account for 1 napi work unit
to gain max tx kpi.

Change-Id: Ic24f131c90b90b0e118edffcab559ddf31779dcf
CRs-Fixed: 3421368

dp/wifi3.0/dp_tx.c

@@ -5648,6 +5648,7 @@ uint32_t dp_tx_comp_handler(struct dp_intr *int_ctx, struct dp_soc *soc,
 	struct dp_srng *tx_comp_ring = &soc->tx_comp_ring[ring_id];
 	int max_reap_limit, ring_near_full;
 	uint32_t num_entries;
+	uint32_t rquota = quota;
 
 	DP_HIST_INIT();
 
@@ -5674,8 +5675,8 @@ more_data:
 		num_avail_for_reap = hal_srng_dst_num_valid(hal_soc,
 							    hal_ring_hdl, 0);
 
-	if (num_avail_for_reap >= quota)
-		num_avail_for_reap = quota;
+	if (num_avail_for_reap >= rquota)
+		num_avail_for_reap = rquota;
 
 	dp_srng_dst_inv_cached_descs(soc, hal_ring_hdl, num_avail_for_reap);
 	last_prefetched_hw_desc = dp_srng_dst_prefetch_32_byte_desc(hal_soc,
@@ -5863,8 +5864,10 @@ next_desc:
 	 *
 	 * One more loop will move the state to normal processing and yield
 	 */
-	if (ring_near_full)
+	if (ring_near_full && rquota) {
+		rquota -= num_processed;
 		goto more_data;
+	}
 
 	if (dp_tx_comp_enable_eol_data_check(soc)) {
 
@@ -5876,8 +5879,10 @@ next_desc:
 						  hal_ring_hdl)) {
 			DP_STATS_INC(soc, tx.hp_oos2, 1);
 			if (!hif_exec_should_yield(soc->hif_handle,
-						   int_ctx->dp_intr_id))
+						   int_ctx->dp_intr_id)) {
+				rquota -= num_processed;
 				goto more_data;
+			}
 
 			num_avail_for_reap =
 				hal_srng_dst_num_valid_locked(soc->hal_soc,
@@ -5887,6 +5892,7 @@ next_desc:
 					 (num_avail_for_reap >=
 					  num_entries >> 1))) {
 				DP_STATS_INC(soc, tx.near_full, 1);
+				rquota -= num_processed;
 				goto more_data;
 			}
 		}