[PATCH v6 1/6] mbuf: add flag for MACsec

[Tiwei Bie <tiwei.bie@intel.com>]

Add a new Tx flag in mbuf, that can be set by applications to
enable the MACsec offload for a packet to be transmitted.

Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
---
 doc/guides/rel_notes/release_17_02.rst | 5 +++++
 lib/librte_mbuf/rte_mbuf.c             | 2 ++
 lib/librte_mbuf/rte_mbuf.h             | 6 ++++++
 3 files changed, 13 insertions(+)

diff --git a/doc/guides/rel_notes/release_17_02.rst b/doc/guides/rel_notes/release_17_02.rst
index 180af82..3958714 100644
--- a/doc/guides/rel_notes/release_17_02.rst
+++ b/doc/guides/rel_notes/release_17_02.rst
@@ -52,6 +52,11 @@ New Features
   See the :ref:`Generic flow API <Generic_flow_API>` documentation for more
   information.
 
+* **Improved offload support in mbuf.**
+
+  Added a new Tx mbuf flag for MACsec, which can be set by applications
+  to enable the MACsec offload for the packets to be transmitted.
+
 
 Resolved Issues
 ---------------
diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index 63f43c8..72ad91e 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -404,6 +404,7 @@ const char *rte_get_tx_ol_flag_name(uint64_t mask)
 	case PKT_TX_TUNNEL_GRE: return "PKT_TX_TUNNEL_GRE";
 	case PKT_TX_TUNNEL_IPIP: return "PKT_TX_TUNNEL_IPIP";
 	case PKT_TX_TUNNEL_GENEVE: return "PKT_TX_TUNNEL_GENEVE";
+	case PKT_TX_MACSEC: return "PKT_TX_MACSEC";
 	default: return NULL;
 	}
 }
@@ -434,6 +435,7 @@ rte_get_tx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
 		  "PKT_TX_TUNNEL_NONE" },
 		{ PKT_TX_TUNNEL_GENEVE, PKT_TX_TUNNEL_MASK,
 		  "PKT_TX_TUNNEL_NONE" },
+		{ PKT_TX_MACSEC, PKT_TX_MACSEC, NULL },
 	};
 	const char *name;
 	unsigned int i;
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 4476d75..ffbb4b3 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -182,6 +182,12 @@ extern "C" {
 /* add new TX flags here */
 
 /**
+ * Offload the MACsec. This flag must be set by the application to enable
+ * this offload feature for a packet to be transmitted.
+ */
+#define PKT_TX_MACSEC        (1ULL << 44)
+
+/**
  * Bits 45:48 used for the tunnel type.
  * When doing Tx offload like TSO or checksum, the HW needs to configure the
  * tunnel type into the HW descriptors.
-- 
2.7.4