ethdev: add mbuf fast free Tx offload

[dpdk.git] / doc / guides / nics / features.rst

diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
index 17745dace004c4794913d923a3c02371b067f3a5..6538470ac7d71f08f429170681040ab1c6ae684e 100644 (file)
--- a/doc/guides/nics/features.rst
+++ b/doc/guides/nics/features.rst
@@ -628,6 +628,15 @@ Supports packet type parsing and returns a list of supported types.
 
 .. _nic_features_timesync:
 
+Mbuf fast free
+--------------
+
+Supports optimization for fast release of mbufs following successful Tx.
+Requires that per queue, all mbufs come from the same mempool and has refcnt = 1.
+
+* **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MBUF_FAST_FREE``.
+* **[provides]   rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MBUF_FAST_FREE``.
+
 Timesync
 --------