4a6672c2d3
Fix spelling errors in comments including doxygen found using codespell. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com> Acked-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Acked-by: Ray Kinsella <mdr@ashroe.eu> Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com> Acked-by: Chenbo Xia <chenbo.xia@intel.com>
157 lines
5.0 KiB
C
157 lines
5.0 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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__extension__
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struct rte_gtp_hdr {
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union {
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uint8_t gtp_hdr_info; /**< GTP header info */
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struct {
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#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
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uint8_t pn:1; /**< N-PDU Number present bit */
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uint8_t s:1; /**< Sequence Number Present bit */
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uint8_t e:1; /**< Extension Present bit */
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uint8_t res1:1; /**< Reserved */
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uint8_t pt:1; /**< Protocol Type bit */
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uint8_t ver:3; /**< Version Number */
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#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
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uint8_t ver:3; /**< Version Number */
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uint8_t pt:1; /**< Protocol Type bit */
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uint8_t res1:1; /**< Reserved */
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uint8_t e:1; /**< Extension Present bit */
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uint8_t s:1; /**< Sequence Number Present bit */
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uint8_t pn:1; /**< N-PDU Number present bit */
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#endif
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};
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};
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uint8_t msg_type; /**< GTP message type */
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rte_be16_t plen; /**< Total payload length */
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rte_be32_t teid; /**< Tunnel endpoint ID */
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} __rte_packed;
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/* Optional word of GTP header, present if any of E, S, PN is set. */
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struct rte_gtp_hdr_ext_word {
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rte_be16_t sqn; /**< Sequence Number. */
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uint8_t npdu; /**< N-PDU number. */
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uint8_t next_ext; /**< Next Extension Header Type. */
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} __rte_packed;
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/**
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* Optional extension for GTP with next_ext set to 0x85
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* defined based on RFC 38415-g30.
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*/
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__extension__
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struct rte_gtp_psc_generic_hdr {
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uint8_t ext_hdr_len; /**< PDU ext hdr len in multiples of 4 bytes */
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#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
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uint8_t type:4; /**< PDU type */
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uint8_t qmp:1; /**< Qos Monitoring Packet */
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uint8_t pad:3; /**< type specific pad bits */
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uint8_t spare:2; /**< type specific spare bits */
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uint8_t qfi:6; /**< Qos Flow Identifier */
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#else
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uint8_t qfi:6; /**< Qos Flow Identifier */
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uint8_t spare:2; /**< type specific spare bits */
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uint8_t pad:3; /**< type specific pad bits */
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uint8_t qmp:1; /**< Qos Monitoring Packet */
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uint8_t type:4; /**< PDU type */
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#endif
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uint8_t data[0]; /**< variable length data fields */
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} __rte_packed;
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/**
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* Optional extension for GTP with next_ext set to 0x85
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* type0 defined based on RFC 38415-g30
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*/
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__extension__
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struct rte_gtp_psc_type0_hdr {
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uint8_t ext_hdr_len; /**< PDU ext hdr len in multiples of 4 bytes */
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#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
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uint8_t type:4; /**< PDU type */
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uint8_t qmp:1; /**< Qos Monitoring Packet */
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uint8_t snp:1; /**< Sequence number presence */
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uint8_t spare_dl1:2; /**< spare down link bits */
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uint8_t ppp:1; /**< Paging policy presence */
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uint8_t rqi:1; /**< Reflective Qos Indicator */
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uint8_t qfi:6; /**< Qos Flow Identifier */
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#else
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uint8_t qfi:6; /**< Qos Flow Identifier */
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uint8_t rqi:1; /**< Reflective Qos Indicator */
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uint8_t ppp:1; /**< Paging policy presence */
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uint8_t spare_dl1:2; /**< spare down link bits */
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uint8_t snp:1; /**< Sequence number presence */
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uint8_t type:4; /**< PDU type */
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#endif
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uint8_t data[0]; /**< variable length data fields */
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} __rte_packed;
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/**
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* Optional extension for GTP with next_ext set to 0x85
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* type1 defined based on RFC 38415-g30
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*/
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__extension__
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struct rte_gtp_psc_type1_hdr {
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uint8_t ext_hdr_len; /**< PDU ext hdr len in multiples of 4 bytes */
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#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
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uint8_t type:4; /**< PDU type */
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uint8_t qmp:1; /**< Qos Monitoring Packet */
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uint8_t dl_delay_ind:1; /**< dl delay result presence */
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uint8_t ul_delay_ind:1; /**< ul delay result presence */
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uint8_t snp:1; /**< Sequence number presence ul */
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uint8_t n_delay_ind:1; /**< N3/N9 delay result presence */
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uint8_t spare_ul2:1; /**< spare up link bits */
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uint8_t qfi:6; /**< Qos Flow Identifier */
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#else
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uint8_t qfi:6; /**< Qos Flow Identifier */
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uint8_t spare_ul2:1; /**< spare up link bits */
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uint8_t n_delay_ind:1; /**< N3/N9 delay result presence */
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uint8_t snp:1; /**< Sequence number presence ul */
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uint8_t ul_delay_ind:1; /**< ul delay result presence */
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uint8_t dl_delay_ind:1; /**< dl delay result presence */
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uint8_t qmp:1; /**< Qos Monitoring Packet */
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uint8_t type:4; /**< PDU type */
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#endif
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uint8_t data[0]; /**< variable length data fields */
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} __rte_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 protocol type */
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#define RTE_GTP_TYPE_IPV4 0x40 /**< GTP next protocol type IPv4 */
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#define RTE_GTP_TYPE_IPV6 0x60 /**< GTP next protocol 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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