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/* Copyright (c) 2014, 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_internal.h>
#include <odp/debug.h>
#include <odp_buffer_internal.h>
#include <odp_buffer_inlines.h>
#include <odp_pool_internal.h>
#include <odp/packet.h>
#include <odp/packet_io.h>
#include <odp/crypto.h>
#include <odp_crypto_internal.h>
#include <rte_acl_osdep.h>
/**
* Packet input & protocol flags
*/
typedef union {
/* All input flags */
uint32_t all;
struct {
uint32_t unparsed:1; /**< Set to inticate parse needed */
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 snap:1; /**< SNAP */
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 tcpopt:1; /**< TCP options present */
uint32_t sctp:1; /**< SCTP */
uint32_t icmp:1; /**< ICMP */
};
} input_flags_t;
_ODP_STATIC_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 app_error:1; /**< Error bit for application use */
uint32_t frame_len:1; /**< Frame length error */
uint32_t snap_len:1; /**< Snap 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_STATIC_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 l3_chksum_set:1; /**< L3 chksum bit is valid */
uint32_t l3_chksum:1; /**< L3 chksum override */
uint32_t l4_chksum_set:1; /**< L3 chksum bit is valid */
uint32_t l4_chksum:1; /**< L4 chksum override */
};
} output_flags_t;
_ODP_STATIC_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 payload_offset; /**< offset to payload */
uint32_t vlan_s_tag; /**< Parsed 1st VLAN header (S-TAG) */
uint32_t vlan_c_tag; /**< Parsed 2nd VLAN header (C-TAG) */
uint32_t l3_protocol; /**< Parsed L3 protocol */
uint32_t l3_len; /**< Layer 3 length */
uint32_t l4_protocol; /**< Parsed L4 protocol */
uint32_t l4_len; /**< Layer 4 length */
odp_pktio_t input; /**< Originating pktio */
uint32_t uarea_size; /**< User metadata size, it's right after
odp_packet_hdr_t*/
odp_crypto_generic_op_result_t op_result; /**< Result for crypto */
} odp_packet_hdr_t __rte_cache_aligned;
/**
* Return the packet header
*/
static inline odp_packet_hdr_t *odp_packet_hdr(odp_packet_t pkt)
{
return (odp_packet_hdr_t *)pkt;
}
/**
* Parse packet and set internal metadata
*/
void odp_packet_parse(odp_packet_t pkt, size_t len, size_t l2_offset);
#define ODP_PACKET_UNPARSED ~0
static inline void _odp_packet_reset_parse(odp_packet_t pkt)
{
odp_packet_hdr_t *pkt_hdr = odp_packet_hdr(pkt);
pkt_hdr->input_flags.all = ODP_PACKET_UNPARSED;
}
static inline void copy_packet_parser_metadata(odp_packet_hdr_t *src_hdr,
odp_packet_hdr_t *dst_hdr)
{
dst_hdr->input_flags = src_hdr->input_flags;
dst_hdr->error_flags = src_hdr->error_flags;
dst_hdr->output_flags = src_hdr->output_flags;
dst_hdr->l2_offset = src_hdr->l2_offset;
dst_hdr->l3_offset = src_hdr->l3_offset;
dst_hdr->l4_offset = src_hdr->l4_offset;
dst_hdr->payload_offset = src_hdr->payload_offset;
dst_hdr->vlan_s_tag = src_hdr->vlan_s_tag;
dst_hdr->vlan_c_tag = src_hdr->vlan_c_tag;
dst_hdr->l3_protocol = src_hdr->l3_protocol;
dst_hdr->l3_len = src_hdr->l3_len;
dst_hdr->l4_protocol = src_hdr->l4_protocol;
dst_hdr->l4_len = src_hdr->l4_len;
}
/* Forward declarations */
int _odp_packet_copy_to_packet(odp_packet_t srcpkt, uint32_t srcoffset,
odp_packet_t dstpkt, uint32_t dstoffset,
uint32_t len);
int _odp_packet_parse(odp_packet_hdr_t *pkt_hdr);
void _odp_packet_copy_md_to_packet(odp_packet_t srcpkt, odp_packet_t dstpkt);
/* Convert a packet handle to a buffer handle */
odp_buffer_t _odp_packet_to_buffer(odp_packet_t pkt);
/* Convert a buffer handle to a packet handle */
odp_packet_t _odp_packet_from_buffer(odp_buffer_t buf);
/* DPDK will reserve RTE_PKTMBUF_HEADROOM in any case */
_ODP_STATIC_ASSERT(ODP_CONFIG_PACKET_HEADROOM <= RTE_PKTMBUF_HEADROOM,
"ERROR: Headroom has to be smaller or equal to DPDK");
/* We can't enforce tailroom reservation for received packets */
_ODP_STATIC_ASSERT(ODP_CONFIG_PACKET_TAILROOM == 0,
"ERROR: Tailroom has to be 0, DPDK doesn't support this");
#ifdef __cplusplus
}
#endif
#endif
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