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net: add GRE header structure

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Add the Gre header structure in librte_net. It will be used by next
patches that adds the support of Gre tunnels in the software packet type
parser.

The extended headers (checksum, key or sequence number) are not defined.

Signed-off-by: Jean Dao <jean.dao@6wind.com>
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
This commit is contained in:
Olivier Matz 2016-10-03 10:38:50 +02:00 committed by Thomas Monjalon
parent b32159dcca
commit 894f71a380
2 changed files with 72 additions and 1 deletions
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2
lib/librte_net/Makefile
View File

@ -43,7 +43,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_NET) := rte_net.c
# install includes
SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include := rte_ip.h rte_tcp.h rte_udp.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_net.h
SYMLINK-$(CONFIG_RTE_LIBRTE_NET)-include += rte_ether.h rte_gre.h rte_net.h
DEPDIRS-$(CONFIG_RTE_LIBRTE_NET) += lib/librte_eal lib/librte_mempool
DEPDIRS-$(CONFIG_RTE_LIBRTE_NET) += lib/librte_mbuf

71
lib/librte_net/rte_gre.h Normal file
View File

@ -0,0 +1,71 @@
/*-
* BSD LICENSE
*
* Copyright 2016 6WIND S.A.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _RTE_GRE_H_
#define _RTE_GRE_H_
#include <stdint.h>
#include <rte_byteorder.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* GRE Header
*/
struct gre_hdr {
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
uint16_t res2:4; /**< Reserved */
uint16_t s:1; /**< Sequence Number Present bit */
uint16_t k:1; /**< Key Present bit */
uint16_t res1:1; /**< Reserved */
uint16_t c:1; /**< Checksum Present bit */
uint16_t ver:3; /**< Version Number */
uint16_t res3:5; /**< Reserved */
#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
uint16_t c:1; /**< Checksum Present bit */
uint16_t res1:1; /**< Reserved */
uint16_t k:1; /**< Key Present bit */
uint16_t s:1; /**< Sequence Number Present bit */
uint16_t res2:4; /**< Reserved */
uint16_t res3:5; /**< Reserved */
uint16_t ver:3; /**< Version Number */
#endif
uint16_t proto; /**< Protocol Type */
} __attribute__((__packed__));
#ifdef __cplusplus
}
#endif
#endif /* RTE_GRE_H_ */