Set tail to 0 on ring initialization

ntop · Jul 29, 2024 · 223449b · 223449b
1 parent a4f27f6
commit 223449b
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/drivers/intel/iavf/iavf-4.9.5-zc/src/iavf_main.c b/drivers/intel/iavf/iavf-4.9.5-zc/src/iavf_main.c
@@ -1579,6 +1579,11 @@ static void iavf_enable_adapter(struct iavf_adapter *adapter)
 	iavf_napi_enable_all(adapter);
 
 	adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_QUEUES;
+
+#ifdef HAVE_PF_RING
+	if (unlikely(enable_debug))
+		printk("[PF_RING-ZC] %s: enabling adapter [RX Tail=%u]", __FUNCTION__, readl(adapter->rx_rings[0].tail));
+#endif
 }
 
 /**

diff --git a/drivers/intel/iavf/iavf-4.9.5-zc/src/iavf_txrx.c b/drivers/intel/iavf/iavf-4.9.5-zc/src/iavf_txrx.c
@@ -1060,8 +1060,10 @@ bool iavf_alloc_rx_buffers(struct iavf_ring *rx_ring, u16 cleaned_count)
 
 #ifdef HAVE_PF_RING
 #ifdef HAVE_PF_RING_ONLY
-	if (!kernel_only_adapter[adapter->instance])
+	if (!kernel_only_adapter[adapter->instance]) {
+		iavf_release_rx_desc(rx_ring, 0 /* set tail to 0 */);
 		return true;
+	}
 #endif
 	if (unlikely(enable_debug))
 		printk("[PF_RING-ZC] %s(%s) prefilling rx ring with %u/%u skbuff\n",