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/* Copyright (c) 2013, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/**
* @file
*
* ODP packet descriptor - implementation internal
*/
#ifndef ODP_PACKET_INTERNAL_H_
#define ODP_PACKET_INTERNAL_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <odp_align.h>
#include <odp_debug.h>
#include <odp_buffer_internal.h>
#include <odp_buffer_pool_internal.h>
#include <odp_packet.h>
#include <odp_packet_io.h>
/**
* Packet input & protocol flags
*/
typedef union {
/* All input flags */
uint32_t all;
struct {
/* Bitfield flags for each protocol */
uint32_t l2:1; /**< known L2 protocol present */
uint32_t l3:1; /**< known L3 protocol present */
uint32_t l4:1; /**< known L4 protocol present */
uint32_t eth:1; /**< Ethernet */
uint32_t jumbo:1; /**< Jumbo frame */
uint32_t vlan:1; /**< VLAN hdr found */
uint32_t vlan_qinq:1; /**< Stacked VLAN found, QinQ */
uint32_t arp:1; /**< ARP */
uint32_t ipv4:1; /**< IPv4 */
uint32_t ipv6:1; /**< IPv6 */
uint32_t ipfrag:1; /**< IP fragment */
uint32_t ipopt:1; /**< IP optional headers */
uint32_t ipsec:1; /**< IPSec decryption may be needed */
uint32_t udp:1; /**< UDP */
uint32_t tcp:1; /**< TCP */
uint32_t sctp:1; /**< SCTP */
uint32_t icmp:1; /**< ICMP */
};
} input_flags_t;
ODP_ASSERT(sizeof(input_flags_t) == sizeof(uint32_t), INPUT_FLAGS_SIZE_ERROR);
/**
* Packet error flags
*/
typedef union {
/* All error flags */
uint32_t all;
struct {
/* Bitfield flags for each detected error */
uint32_t frame_len:1; /**< Frame length error */
uint32_t l2_chksum:1; /**< L2 checksum error, checks TBD */
uint32_t ip_err:1; /**< IP error, checks TBD */
uint32_t tcp_err:1; /**< TCP error, checks TBD */
uint32_t udp_err:1; /**< UDP error, checks TBD */
};
} error_flags_t;
ODP_ASSERT(sizeof(error_flags_t) == sizeof(uint32_t), ERROR_FLAGS_SIZE_ERROR);
/**
* Packet output flags
*/
typedef union {
/* All output flags */
uint32_t all;
struct {
/* Bitfield flags for each output option */
uint32_t l4_chksum:1; /**< Request L4 checksum calculation */
};
} output_flags_t;
ODP_ASSERT(sizeof(output_flags_t) == sizeof(uint32_t), OUTPUT_FLAGS_SIZE_ERROR);
/**
* Internal Packet header
*/
typedef struct {
/* common buffer header */
odp_buffer_hdr_t buf_hdr;
input_flags_t input_flags;
error_flags_t error_flags;
output_flags_t output_flags;
uint32_t frame_offset; /**< offset to start of frame, even on error */
uint32_t l2_offset; /**< offset to L2 hdr, e.g. Eth */
uint32_t l3_offset; /**< offset to L3 hdr, e.g. IPv4, IPv6 */
uint32_t l4_offset; /**< offset to L4 hdr (TCP, UDP, SCTP, also ICMP) */
uint32_t frame_len;
odp_pktio_t input;
uint32_t pad;
uint8_t payload[];
} odp_packet_hdr_t;
ODP_ASSERT(sizeof(odp_packet_hdr_t) == ODP_OFFSETOF(odp_packet_hdr_t, payload),
ODP_PACKET_HDR_T__SIZE_ERR);
ODP_ASSERT(sizeof(odp_packet_hdr_t) % sizeof(uint64_t) == 0,
ODP_PACKET_HDR_T__SIZE_ERR2);
/**
* Return the packet header
*/
static inline odp_packet_hdr_t *odp_packet_hdr(odp_packet_t pkt)
{
return (odp_packet_hdr_t *)odp_buf_to_hdr((odp_buffer_t)pkt);
}
/**
* Parse packet and set internal metadata
*/
void odp_packet_parse(odp_packet_t pkt, size_t len, size_t l2_offset);
#ifdef __cplusplus
}
#endif
#endif
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