[dpdk-dev] [PATCH 1/2] net: add Mpls header structure

[Olivier Matz <olivier.matz@6wind.com>]

Add the Mpls header structure in librte_net. It will be used by next
patch that adds the support of Mpls L2 layer in the software packet
type parser.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 lib/librte_net/Makefile    |  2 +-
 lib/librte_net/meson.build |  3 ++-
 lib/librte_net/rte_mpls.h  | 42 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 45 insertions(+), 2 deletions(-)
 create mode 100644 lib/librte_net/rte_mpls.h

diff --git a/lib/librte_net/Makefile b/lib/librte_net/Makefile
index 85e403f41..c3082069a 100644
--- a/lib/librte_net/Makefile
+++ b/lib/librte_net/Makefile
@@ -20,6 +20,6 @@ SRCS-$(CONFIG_RTE_LIBRTE_NET) += rte_arp.c
 SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include := rte_ip.h rte_tcp.h rte_udp.h rte_esp.h
 SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include += rte_sctp.h rte_icmp.h rte_arp.h
 SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include += rte_ether.h rte_gre.h rte_net.h
-SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include += rte_net_crc.h
+SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include += rte_net_crc.h rte_mpls.h
 
 include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/lib/librte_net/meson.build b/lib/librte_net/meson.build
index d3ea1feb5..7d66f693c 100644
--- a/lib/librte_net/meson.build
+++ b/lib/librte_net/meson.build
@@ -13,7 +13,8 @@ headers = files('rte_ip.h',
 	'rte_ether.h',
 	'rte_gre.h',
 	'rte_net.h',
-	'rte_net_crc.h')
+	'rte_net_crc.h',
+	'rte_mpls.h')
 
 sources = files('rte_arp.c', 'rte_net.c', 'rte_net_crc.c')
 deps += ['mbuf']
diff --git a/lib/librte_net/rte_mpls.h b/lib/librte_net/rte_mpls.h
new file mode 100644
index 000000000..11d26ba35
--- /dev/null
+++ b/lib/librte_net/rte_mpls.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016 6WIND S.A.
+ */
+
+#ifndef _RTE_MPLS_H_
+#define _RTE_MPLS_H_
+
+/**
+ * @file
+ *
+ * MPLS-related defines
+ */
+
+#include <stdint.h>
+#include <rte_byteorder.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * MPLS header.
+ */
+struct mpls_hdr {
+	uint16_t tag_msb;   /**< Label(msb). */
+#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+	uint8_t tag_lsb:4;  /**< Label(lsb). */
+	uint8_t tc:3;       /**< Traffic class. */
+	uint8_t bs:1;       /**< Bottom of stack. */
+#else
+	uint8_t bs:1;       /**< Bottom of stack. */
+	uint8_t tc:3;       /**< Traffic class. */
+	uint8_t tag_lsb:4;  /**< label(lsb) */
+#endif
+	uint8_t  ttl;       /**< Time to live. */
+} __attribute__((__packed__));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* RTE_MPLS_H_ */
-- 
2.11.0