[dpdk-dev] [PATCH v2 1/2] mbuf: introduce new Tx offload flag for MPLS-in-UDP

Rasesh Mody rasesh.mody at cavium.com
Wed Jun 7 09:43:48 CEST 2017


From: Harish Patil <harish.patil at cavium.com>

Some PMDs need to know the tunnel type in order to handle advance TX
features. This patch adds a new TX offload flag for MPLS-in-UDP packets.

Signed-off-by: Harish Patil <harish.patil at cavium.com>
---
 lib/librte_mbuf/rte_mbuf.c |    2 ++
 lib/librte_mbuf/rte_mbuf.h |   17 ++++++++++-------
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index 0e3e36a..c2793fb 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -410,6 +410,7 @@ const char *rte_get_tx_ol_flag_name(uint64_t mask)
 	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";
+	case PKT_TX_TUNNEL_MPLSINUDP: return "PKT_TX_TUNNEL_MPLSINUDP";
 	default: return NULL;
 	}
 }
@@ -441,6 +442,7 @@ const char *rte_get_tx_ol_flag_name(uint64_t mask)
 		{ PKT_TX_TUNNEL_GENEVE, PKT_TX_TUNNEL_MASK,
 		  "PKT_TX_TUNNEL_NONE" },
 		{ PKT_TX_MACSEC, PKT_TX_MACSEC, NULL },
+		{ PKT_TX_TUNNEL_MPLSINUDP, PKT_TX_TUNNEL_MPLSINUDP, NULL },
 	};
 	const char *name;
 	unsigned int i;
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 1cb0310..27ad421 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -197,19 +197,22 @@
  * 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)
+#define PKT_TX_MACSEC        (1ULL << 43)
 
 /**
- * Bits 45:48 used for the tunnel type.
+ * Bits 44:48 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.
  */
-#define PKT_TX_TUNNEL_VXLAN   (0x1ULL << 45)
-#define PKT_TX_TUNNEL_GRE     (0x2ULL << 45)
-#define PKT_TX_TUNNEL_IPIP    (0x3ULL << 45)
-#define PKT_TX_TUNNEL_GENEVE  (0x4ULL << 45)
+/**< TX packet with MPLS-in-UDP RFC 7510 header. */
+#define PKT_TX_TUNNEL_MPLSINUDP (0x1ULL << 44)
+
+#define PKT_TX_TUNNEL_VXLAN   (0x2ULL << 44)
+#define PKT_TX_TUNNEL_GRE     (0x3ULL << 44)
+#define PKT_TX_TUNNEL_IPIP    (0x4ULL << 44)
+#define PKT_TX_TUNNEL_GENEVE  (0x5ULL << 45)
 /* add new TX TUNNEL type here */
-#define PKT_TX_TUNNEL_MASK    (0xFULL << 45)
+#define PKT_TX_TUNNEL_MASK    (0x1FULL << 44)
 
 /**
  * Second VLAN insertion (QinQ) flag.
-- 
1.7.10.3



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