d8e5e69f3a
Enable testpmd to forward GTP packet in csum fwd mode. A GTP header structure (without optional fields and extension header) is defined in new rte_gtp.h. A parser function in testpmd is added. GTPU and GTPC packets are both supported, with respective UDP destination port and GTP message type. Signed-off-by: Ting Xu <ting.xu@intel.com> Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 1982, 1986, 1990, 1993
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* The Regents of the University of California.
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* Copyright(c) 2010-2014 Intel Corporation.
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* All rights reserved.
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*/
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#ifndef _RTE_GTP_H_
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#define _RTE_GTP_H_
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/**
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* @file
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*
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* GTP-related defines
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*/
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#include <stdint.h>
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#include <rte_byteorder.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Simplified GTP protocol header.
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* Contains 8-bit header info, 8-bit message type,
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* 16-bit payload length after mandatory header, 32-bit TEID.
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* No optional fields and next extension header.
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*/
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struct rte_gtp_hdr {
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uint8_t gtp_hdr_info; /**< GTP header info */
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uint8_t msg_type; /**< GTP message type */
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uint16_t plen; /**< Total payload length */
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uint32_t teid; /**< Tunnel endpoint ID */
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} __attribute__((__packed__));
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/** GTP header length */
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#define RTE_ETHER_GTP_HLEN \
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(sizeof(struct rte_udp_hdr) + sizeof(struct rte_gtp_hdr))
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/* GTP next protocal type */
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#define RTE_GTP_TYPE_IPV4 0x40 /**< GTP next protocal type IPv4 */
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#define RTE_GTP_TYPE_IPV6 0x60 /**< GTP next protocal type IPv6 */
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/* GTP destination port number */
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#define RTE_GTPC_UDP_PORT 2123 /**< GTP-C UDP destination port */
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#define RTE_GTPU_UDP_PORT 2152 /**< GTP-U UDP destination port */
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#ifdef __cplusplus
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}
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#endif
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#endif /* RTE_GTP_H_ */
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