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path: root/platform/linux-dpdk/odp_packet.c
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/* Copyright (c) 2013-2018, Linaro Limited
 * All rights reserved.
 *
 * SPDX-License-Identifier:     BSD-3-Clause
 */

#include "config.h"

#include <odp/api/packet.h>
#include <odp/api/plat/packet_inlines.h>
#include <odp_packet_internal.h>
#include <odp_debug_internal.h>
#include <odp/api/hints.h>
#include <odp/api/byteorder.h>
#include <odp/api/plat/byteorder_inlines.h>
#include <odp/api/packet_io.h>
#include <odp/api/plat/pktio_inlines.h>

#include <protocols/eth.h>
#include <protocols/ip.h>
#include <protocols/tcp.h>
#include <protocols/udp.h>

#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include <inttypes.h>

#include <odp/visibility_begin.h>

/* Fill in packet header field offsets for inline functions */

const _odp_packet_inline_offset_t ODP_ALIGNED_CACHE _odp_packet_inline = {
	.mb               = offsetof(odp_packet_hdr_t, buf_hdr.mb),
	.pool             = offsetof(odp_packet_hdr_t, buf_hdr.pool_ptr),
	.input            = offsetof(odp_packet_hdr_t, input),
	.user_ptr         = offsetof(odp_packet_hdr_t, buf_hdr.user_ptr),
	.l2_offset        = offsetof(odp_packet_hdr_t, p.l2_offset),
	.l3_offset        = offsetof(odp_packet_hdr_t, p.l3_offset),
	.l4_offset        = offsetof(odp_packet_hdr_t, p.l4_offset),
	.timestamp        = offsetof(odp_packet_hdr_t, timestamp),
	.input_flags      = offsetof(odp_packet_hdr_t, p.input_flags),
	.flags            = offsetof(odp_packet_hdr_t, p.flags),
	.buf_addr         = offsetof(odp_packet_hdr_t, buf_hdr.mb.buf_addr),
	.data             = offsetof(odp_packet_hdr_t, buf_hdr.mb.data_off),
	.pkt_len          = offsetof(odp_packet_hdr_t, buf_hdr.mb.pkt_len),
	.seg_len          = offsetof(odp_packet_hdr_t, buf_hdr.mb.data_len),
	.nb_segs          = offsetof(odp_packet_hdr_t, buf_hdr.mb.nb_segs),
	.udata            = sizeof(odp_packet_hdr_t),
	.rss              = offsetof(odp_packet_hdr_t, buf_hdr.mb.hash.rss),
	.ol_flags         = offsetof(odp_packet_hdr_t, buf_hdr.mb.ol_flags),
	.rss_flag         = PKT_RX_RSS_HASH
};

#include <odp/visibility_end.h>

/* Catch if DPDK mbuf members sizes have changed */
struct rte_mbuf dummy;
ODP_STATIC_ASSERT(sizeof(dummy.data_off) == sizeof(uint16_t),
		  "data_off should be uint16_t");
ODP_STATIC_ASSERT(sizeof(dummy.pkt_len) == sizeof(uint32_t),
		  "pkt_len should be uint32_t");
ODP_STATIC_ASSERT(sizeof(dummy.data_len) == sizeof(uint16_t),
		  "data_len should be uint16_t");
ODP_STATIC_ASSERT(sizeof(dummy.nb_segs) == sizeof(uint16_t),
		  "nb_segs should be uint16_t");
ODP_STATIC_ASSERT(sizeof(dummy.hash.rss) == sizeof(uint32_t),
		  "hash.rss should be uint32_t");
ODP_STATIC_ASSERT(sizeof(dummy.ol_flags) == sizeof(uint64_t),
		  "ol_flags should be uint64_t");

/* Check that invalid values are the same. Some versions of Clang have trouble
 * with the strong type casting, and complain that these invalid values are not
 * integral constants. */
#ifndef __clang__
ODP_STATIC_ASSERT(ODP_PACKET_INVALID == 0, "Packet invalid not 0");
ODP_STATIC_ASSERT(ODP_BUFFER_INVALID == 0, "Buffer invalid not 0");
ODP_STATIC_ASSERT(ODP_EVENT_INVALID  == 0, "Event invalid not 0");
#endif

static inline odp_buffer_t packet_to_buffer(odp_packet_t pkt)
{
	return (odp_buffer_t)pkt;
}

void packet_parse_reset(odp_packet_hdr_t *pkt_hdr)
{
	/* Reset parser metadata before new parse */
	pkt_hdr->p.input_flags.all  = 0;
	pkt_hdr->p.flags.all.error  = 0;
	pkt_hdr->p.l2_offset        = ODP_PACKET_OFFSET_INVALID;
	pkt_hdr->p.l3_offset        = ODP_PACKET_OFFSET_INVALID;
	pkt_hdr->p.l4_offset        = ODP_PACKET_OFFSET_INVALID;
}

static odp_packet_t packet_alloc(pool_t *pool, uint32_t len)
{
	odp_packet_t pkt;
	uintmax_t totsize = RTE_PKTMBUF_HEADROOM + len;
	odp_packet_hdr_t *pkt_hdr;
	struct rte_mbuf *mbuf;

	if (pool->params.type != ODP_POOL_PACKET)
		return ODP_PACKET_INVALID;

	mbuf = rte_pktmbuf_alloc(pool->rte_mempool);
	if (mbuf == NULL) {
		rte_errno = ENOMEM;
		return ODP_PACKET_INVALID;
	}
	pkt_hdr = (odp_packet_hdr_t *)mbuf;
	pkt_hdr->buf_hdr.totsize = mbuf->buf_len;

	if (mbuf->buf_len < totsize) {
		intmax_t needed = totsize - mbuf->buf_len;
		struct rte_mbuf *curseg = mbuf;

		do {
			struct rte_mbuf *nextseg =
				rte_pktmbuf_alloc(pool->rte_mempool);

			if (nextseg == NULL) {
				rte_pktmbuf_free(mbuf);
				return ODP_PACKET_INVALID;
			}

			curseg->next = nextseg;
			curseg = nextseg;
			curseg->data_off = 0;
			pkt_hdr->buf_hdr.totsize += curseg->buf_len;
			needed -= curseg->buf_len;
		} while (needed > 0);
	}

	pkt = (odp_packet_t)mbuf;

	if (odp_packet_reset(pkt, len) != 0)
		return ODP_PACKET_INVALID;

	return pkt;
}

odp_packet_t odp_packet_alloc(odp_pool_t pool_hdl, uint32_t len)
{
	pool_t *pool = pool_entry_from_hdl(pool_hdl);

	return packet_alloc(pool, len);
}

int odp_packet_alloc_multi(odp_pool_t pool_hdl, uint32_t len,
			   odp_packet_t pkt[], int num)
{
	int i;
	pool_t *pool = pool_entry_from_hdl(pool_hdl);

	for (i = 0; i < num; i++) {
		pkt[i] = packet_alloc(pool, len);
		if (pkt[i] == ODP_PACKET_INVALID)
			return rte_errno == ENOMEM ? i : -EINVAL;
	}
	return i;
}

void odp_packet_free(odp_packet_t pkt)
{
	rte_pktmbuf_free(pkt_to_mbuf(pkt));
}

void odp_packet_free_multi(const odp_packet_t pkt[], int num)
{
	int i;

	for (i = 0; i < num; i++)
		rte_pktmbuf_free(pkt_to_mbuf(pkt[i]));
}

void odp_packet_free_sp(const odp_packet_t pkt[], int num)
{
	odp_packet_free_multi(pkt, num);
}

int odp_packet_reset(odp_packet_t pkt, uint32_t len)
{
	odp_packet_hdr_t *const pkt_hdr = packet_hdr(pkt);
	struct rte_mbuf *ms, *mb = &pkt_hdr->buf_hdr.mb;
	uint8_t nb_segs = 0;
	int32_t lenleft = len;

	if (RTE_PKTMBUF_HEADROOM + len > odp_packet_buf_len(pkt)) {
		ODP_DBG("Not enought head room for that packet %d/%d\n",
			RTE_PKTMBUF_HEADROOM + len,
			odp_packet_buf_len(pkt));
		return -1;
	}

	pkt_hdr->p.input_flags.all  = 0;
	pkt_hdr->p.flags.all_flags  = 0;

	pkt_hdr->p.l2_offset = 0;
	pkt_hdr->p.l3_offset = ODP_PACKET_OFFSET_INVALID;
	pkt_hdr->p.l4_offset = ODP_PACKET_OFFSET_INVALID;

	pkt_hdr->input = ODP_PKTIO_INVALID;
	pkt_hdr->subtype = ODP_EVENT_PACKET_BASIC;

	mb->port = 0xff;
	mb->pkt_len = len;
	mb->data_off = RTE_PKTMBUF_HEADROOM;
	mb->vlan_tci = 0;
	nb_segs = 1;

	if (RTE_PKTMBUF_HEADROOM + lenleft <= mb->buf_len) {
		mb->data_len = lenleft;
	} else {
		mb->data_len = mb->buf_len - RTE_PKTMBUF_HEADROOM;
		lenleft -= mb->data_len;
		ms = mb->next;
		while (lenleft > 0) {
			nb_segs++;
			ms->data_len = lenleft <= ms->buf_len ?
				lenleft : ms->buf_len;
			lenleft -= ms->buf_len;
			ms = ms->next;
		}
	}

	mb->nb_segs = nb_segs;
	return 0;
}

int odp_event_filter_packet(const odp_event_t event[],
			    odp_packet_t packet[],
			    odp_event_t remain[], int num)
{
	int i;
	int num_pkt = 0;
	int num_rem = 0;

	for (i = 0; i < num; i++) {
		if (odp_event_type(event[i]) == ODP_EVENT_PACKET) {
			packet[num_pkt] = odp_packet_from_event(event[i]);
			num_pkt++;
		} else {
			remain[num_rem] = event[i];
			num_rem++;
		}
	}

	return num_pkt;
}

uint32_t odp_packet_buf_len(odp_packet_t pkt)
{
	return packet_hdr(pkt)->buf_hdr.totsize;
}

void *odp_packet_tail(odp_packet_t pkt)
{
	struct rte_mbuf *mb = &(packet_hdr(pkt)->buf_hdr.mb);

	mb = rte_pktmbuf_lastseg(mb);
	return (void *)(rte_pktmbuf_mtod(mb, char *) + mb->data_len);
}

void *odp_packet_push_head(odp_packet_t pkt, uint32_t len)
{
	struct rte_mbuf *mb = &(packet_hdr(pkt)->buf_hdr.mb);

	return (void *)rte_pktmbuf_prepend(mb, len);
}

static void _copy_head_metadata(struct rte_mbuf *newhead,
				struct rte_mbuf *oldhead)
{
	odp_packet_t pkt = (odp_packet_t)newhead;
	uint32_t saved_index = packet_hdr(pkt)->buf_hdr.index;

	rte_mbuf_refcnt_set(newhead, rte_mbuf_refcnt_read(oldhead));
	newhead->port = oldhead->port;
	newhead->ol_flags = oldhead->ol_flags;
	newhead->packet_type = oldhead->packet_type;
	newhead->vlan_tci = oldhead->vlan_tci;
	newhead->hash.rss = 0;
	newhead->seqn = oldhead->seqn;
	newhead->vlan_tci_outer = oldhead->vlan_tci_outer;
	newhead->udata64 = oldhead->udata64;
	memcpy(&newhead->tx_offload, &oldhead->tx_offload,
	       sizeof(odp_packet_hdr_t) -
	       offsetof(struct rte_mbuf, tx_offload));
	packet_hdr(pkt)->buf_hdr.index = saved_index;
}

int odp_packet_extend_head(odp_packet_t *pkt, uint32_t len, void **data_ptr,
			   uint32_t *seg_len)
{
	struct rte_mbuf *mb = &(packet_hdr(*pkt)->buf_hdr.mb);
	int addheadsize = len - rte_pktmbuf_headroom(mb);

	if (addheadsize > 0) {
		struct rte_mbuf *newhead, *t;
		uint32_t totsize_change;
		int i;

		newhead = rte_pktmbuf_alloc(mb->pool);
		if (newhead == NULL)
			return -1;

		newhead->data_len = addheadsize % newhead->buf_len;
		newhead->pkt_len = addheadsize;
		newhead->data_off = newhead->buf_len - newhead->data_len;
		newhead->nb_segs = addheadsize / newhead->buf_len + 1;
		t = newhead;

		for (i = 0; i < newhead->nb_segs - 1; --i) {
			t->next = rte_pktmbuf_alloc(mb->pool);

			if (t->next == NULL) {
				rte_pktmbuf_free(newhead);
				return -1;
			}
			/* The intermediate segments are fully used */
			t->data_len = t->buf_len;
			t->data_off = 0;
		}
		totsize_change = newhead->nb_segs * newhead->buf_len;
		if (rte_pktmbuf_chain(newhead, mb)) {
			rte_pktmbuf_free(newhead);
			return -1;
		}
		/* Expand the original head segment*/
		newhead->pkt_len += rte_pktmbuf_headroom(mb);
		mb->data_off = 0;
		mb->data_len = mb->buf_len;
		_copy_head_metadata(newhead, mb);
		mb = newhead;
		*pkt = (odp_packet_t)newhead;
		packet_hdr(*pkt)->buf_hdr.totsize += totsize_change;
	} else {
		rte_pktmbuf_prepend(mb, len);
	}

	if (data_ptr)
		*data_ptr = odp_packet_data(*pkt);
	if (seg_len)
		*seg_len = mb->data_len;

	return 0;
}

void *odp_packet_pull_head(odp_packet_t pkt, uint32_t len)
{
	struct rte_mbuf *mb = &(packet_hdr(pkt)->buf_hdr.mb);

	return (void *)rte_pktmbuf_adj(mb, len);
}

int odp_packet_trunc_head(odp_packet_t *pkt, uint32_t len, void **data_ptr,
			  uint32_t *seg_len)
{
	struct rte_mbuf *mb = &(packet_hdr(*pkt)->buf_hdr.mb);

	if (odp_packet_len(*pkt) < len)
		return -1;

	if (len > mb->data_len) {
		struct rte_mbuf *newhead = mb, *prev = NULL;
		uint32_t left = len;
		uint32_t totsize_change = 0;

		while (newhead->next != NULL) {
			if (newhead->data_len > left)
				break;
			left -= newhead->data_len;
			totsize_change += newhead->buf_len;
			prev = newhead;
			newhead = newhead->next;
			--mb->nb_segs;
		}
		newhead->data_off += left;
		newhead->nb_segs = mb->nb_segs;
		newhead->pkt_len = mb->pkt_len - len;
		newhead->data_len -= left;
		_copy_head_metadata(newhead, mb);
		prev->next = NULL;
		rte_pktmbuf_free(mb);
		*pkt = (odp_packet_t)newhead;
		packet_hdr(*pkt)->buf_hdr.totsize -= totsize_change;
	} else {
		rte_pktmbuf_adj(mb, len);
	}

	if (data_ptr)
		*data_ptr = odp_packet_data(*pkt);
	if (seg_len)
		*seg_len = mb->data_len;

	return 0;
}

void *odp_packet_push_tail(odp_packet_t pkt, uint32_t len)
{
	struct rte_mbuf *mb = &(packet_hdr(pkt)->buf_hdr.mb);

	return (void *)rte_pktmbuf_append(mb, len);
}

int odp_packet_extend_tail(odp_packet_t *pkt, uint32_t len, void **data_ptr,
			   uint32_t *seg_len)
{
	struct rte_mbuf *mb = &(packet_hdr(*pkt)->buf_hdr.mb);
	int newtailsize = len - odp_packet_tailroom(*pkt);
	uint32_t old_pkt_len = odp_packet_len(*pkt);

	if (data_ptr)
		*data_ptr = odp_packet_tail(*pkt);

	if (newtailsize > 0) {
		struct rte_mbuf *newtail = rte_pktmbuf_alloc(mb->pool);
		struct rte_mbuf *t;
		struct rte_mbuf *m_last = rte_pktmbuf_lastseg(mb);
		int i;

		if (newtail == NULL)
			return -1;
		newtail->data_off = 0;
		newtail->pkt_len = newtailsize;
		if (newtailsize > newtail->buf_len)
			newtail->data_len = newtail->buf_len;
		else
			newtail->data_len = newtailsize;
		newtail->nb_segs = newtailsize / newtail->buf_len + 1;
		t = newtail;

		for (i = 0; i < newtail->nb_segs - 1; ++i) {
			t->next = rte_pktmbuf_alloc(mb->pool);

			if (t->next == NULL) {
				rte_pktmbuf_free(newtail);
				return -1;
			}
			t = t->next;
			t->data_off = 0;
			/* The last segment's size is not trivial*/
			t->data_len = i == newtail->nb_segs - 2 ?
				      newtailsize % newtail->buf_len :
				      t->buf_len;
		}
		if (rte_pktmbuf_chain(mb, newtail)) {
			rte_pktmbuf_free(newtail);
			return -1;
		}
		/* Expand the original tail */
		m_last->data_len = m_last->buf_len - m_last->data_off;
		mb->pkt_len += len - newtailsize;
		packet_hdr(*pkt)->buf_hdr.totsize +=
				newtail->nb_segs * newtail->buf_len;
	} else {
		rte_pktmbuf_append(mb, len);
	}

	if (seg_len)
		odp_packet_offset(*pkt, old_pkt_len, seg_len, NULL);

	return 0;
}

void *odp_packet_pull_tail(odp_packet_t pkt, uint32_t len)
{
	struct rte_mbuf *mb = &(packet_hdr(pkt)->buf_hdr.mb);

	if (rte_pktmbuf_trim(mb, len))
		return NULL;
	else
		return odp_packet_tail(pkt);
}

int odp_packet_trunc_tail(odp_packet_t *pkt, uint32_t len, void **tail_ptr,
			  uint32_t *tailroom)
{
	struct rte_mbuf *mb = &(packet_hdr(*pkt)->buf_hdr.mb);

	if (odp_packet_len(*pkt) < len)
		return -1;

	if (rte_pktmbuf_trim(mb, len)) {
		struct rte_mbuf *reverse[mb->nb_segs];
		struct rte_mbuf *t = mb;
		int i;

		for (i = 0; i < mb->nb_segs; ++i) {
			reverse[i] = t;
			t = t->next;
		}
		for (i = mb->nb_segs - 1; i >= 0 && len > 0; --i) {
			t = reverse[i];
			if (len >= t->data_len) {
				len -= t->data_len;
				mb->pkt_len -= t->data_len;
				t->data_len = 0;
				if (i > 0) {
					rte_pktmbuf_free_seg(t);
					--mb->nb_segs;
					reverse[i - 1]->next = NULL;
				}
			} else {
				t->data_len -= len;
				mb->pkt_len -= len;
				len = 0;
			}
		}
	}

	if (tail_ptr)
		*tail_ptr = odp_packet_tail(*pkt);
	if (tailroom)
		*tailroom = odp_packet_tailroom(*pkt);

	return 0;
}

/*
 *
 * Meta-data
 * ********************************************************
 *
 */

void odp_packet_user_ptr_set(odp_packet_t pkt, const void *ptr)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (odp_unlikely(ptr == NULL)) {
		pkt_hdr->p.flags.user_ptr_set = 0;
		return;
	}

	pkt_hdr->buf_hdr.user_ptr     = ptr;
	pkt_hdr->p.flags.user_ptr_set = 1;
}

int odp_packet_l2_offset_set(odp_packet_t pkt, uint32_t offset)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (odp_unlikely(offset >= (odp_packet_len(pkt) - 1)))
		return -1;

	packet_hdr_has_l2_set(pkt_hdr, 1);
	pkt_hdr->p.l2_offset = offset;
	return 0;
}

int odp_packet_l3_offset_set(odp_packet_t pkt, uint32_t offset)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (odp_unlikely(offset >= (odp_packet_len(pkt) - 1)))
		return -1;

	pkt_hdr->p.l3_offset = offset;
	return 0;
}

int odp_packet_l4_offset_set(odp_packet_t pkt, uint32_t offset)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (odp_unlikely(offset >= (odp_packet_len(pkt) - 1)))
		return -1;

	pkt_hdr->p.l4_offset = offset;
	return 0;
}

uint16_t odp_packet_ones_comp(odp_packet_t pkt, odp_packet_data_range_t *range)
{
	(void)pkt;
	range->length = 0;
	range->offset = 0;
	return 0;
}

void odp_packet_l3_chksum_insert(odp_packet_t pkt, int insert)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	pkt_hdr->p.flags.l3_chksum_set = 1;
	pkt_hdr->p.flags.l3_chksum = insert;
}

void odp_packet_l4_chksum_insert(odp_packet_t pkt, int insert)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	pkt_hdr->p.flags.l4_chksum_set = 1;
	pkt_hdr->p.flags.l4_chksum = insert;
}

odp_packet_chksum_status_t odp_packet_l3_chksum_status(odp_packet_t pkt)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (!pkt_hdr->p.input_flags.l3_chksum_done)
		return ODP_PACKET_CHKSUM_UNKNOWN;

	if (pkt_hdr->p.flags.l3_chksum_err)
		return ODP_PACKET_CHKSUM_BAD;

	return ODP_PACKET_CHKSUM_OK;
}

odp_packet_chksum_status_t odp_packet_l4_chksum_status(odp_packet_t pkt)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (!pkt_hdr->p.input_flags.l4_chksum_done)
		return ODP_PACKET_CHKSUM_UNKNOWN;

	if (pkt_hdr->p.flags.l4_chksum_err)
		return ODP_PACKET_CHKSUM_BAD;

	return ODP_PACKET_CHKSUM_OK;
}

void odp_packet_ts_set(odp_packet_t pkt, odp_time_t timestamp)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	packet_set_ts(pkt_hdr, &timestamp);
}

/*
 *
 * Segment level
 * ********************************************************
 *
 */

void *odp_packet_seg_data(odp_packet_t pkt ODP_UNUSED, odp_packet_seg_t seg)
{
	return odp_packet_data((odp_packet_t)(uintptr_t)seg);
}

uint32_t odp_packet_seg_data_len(odp_packet_t pkt ODP_UNUSED,
				 odp_packet_seg_t seg)
{
	return odp_packet_seg_len((odp_packet_t)(uintptr_t)seg);
}

/*
 *
 * Manipulation
 * ********************************************************
 *
 */

int odp_packet_add_data(odp_packet_t *pkt_ptr, uint32_t offset, uint32_t len)
{
	odp_packet_t pkt = *pkt_ptr;
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);
	uint32_t pktlen = odp_packet_len(pkt);
	pool_t *pool = pkt_hdr->buf_hdr.pool_ptr;
	odp_packet_t newpkt;

	if (offset > pktlen)
		return -1;

	newpkt = odp_packet_alloc(pool->pool_hdl, pktlen + len);

	if (newpkt == ODP_PACKET_INVALID)
		return -1;

	if (odp_packet_copy_from_pkt(newpkt, 0, pkt, 0, offset) != 0 ||
	    odp_packet_copy_from_pkt(newpkt, offset + len, pkt, offset,
				     pktlen - offset) != 0) {
		odp_packet_free(newpkt);
		return -1;
	}

	_odp_packet_copy_md_to_packet(pkt, newpkt);
	odp_packet_free(pkt);
	*pkt_ptr = newpkt;

	return 1;
}

int odp_packet_rem_data(odp_packet_t *pkt_ptr, uint32_t offset, uint32_t len)
{
	odp_packet_t pkt = *pkt_ptr;
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);
	uint32_t pktlen = odp_packet_len(pkt);
	pool_t *pool = pkt_hdr->buf_hdr.pool_ptr;
	odp_packet_t newpkt;

	if (offset > pktlen || offset + len > pktlen)
		return -1;

	newpkt = odp_packet_alloc(pool->pool_hdl, pktlen - len);

	if (newpkt == ODP_PACKET_INVALID)
		return -1;

	if (odp_packet_copy_from_pkt(newpkt, 0, pkt, 0, offset) != 0 ||
	    odp_packet_copy_from_pkt(newpkt, offset, pkt, offset + len,
				     pktlen - offset - len) != 0) {
		odp_packet_free(newpkt);
		return -1;
	}

	_odp_packet_copy_md_to_packet(pkt, newpkt);
	odp_packet_free(pkt);
	*pkt_ptr = newpkt;

	return 1;
}

int odp_packet_align(odp_packet_t *pkt, uint32_t offset, uint32_t len,
		     uint32_t align)
{
	int rc;
	uint32_t shift;
	uint32_t seglen = 0;  /* GCC */
	void *addr = odp_packet_offset(*pkt, offset, &seglen, NULL);
	uint64_t uaddr = (uint64_t)(uintptr_t)addr;
	uint64_t misalign;

	if (align > ODP_CACHE_LINE_SIZE)
		return -1;

	if (seglen >= len) {
		misalign = align <= 1 ? 0 :
			ROUNDUP_ALIGN(uaddr, align) - uaddr;
		if (misalign == 0)
			return 0;
		shift = align - misalign;
	} else {
		if (len > odp_packet_seg_len(*pkt))
			return -1;
		shift  = len - seglen;
		uaddr -= shift;
		misalign = align <= 1 ? 0 :
			ROUNDUP_ALIGN(uaddr, align) - uaddr;
		if (misalign)
			shift += align - misalign;
	}

	rc = odp_packet_extend_head(pkt, shift, NULL, NULL);
	if (rc < 0)
		return rc;

	(void)odp_packet_move_data(*pkt, 0, shift,
				   odp_packet_len(*pkt) - shift);

	(void)odp_packet_trunc_tail(pkt, shift, NULL, NULL);
	return 1;
}

int odp_packet_concat(odp_packet_t *dst, odp_packet_t src)
{
	odp_packet_hdr_t *dst_hdr = packet_hdr(*dst);
	odp_packet_hdr_t *src_hdr = packet_hdr(src);
	struct rte_mbuf *mb_dst = pkt_to_mbuf(*dst);
	struct rte_mbuf *mb_src = pkt_to_mbuf(src);
	odp_packet_t new_dst;
	odp_pool_t pool;
	uint32_t dst_len;
	uint32_t src_len;

	if (odp_likely(!rte_pktmbuf_chain(mb_dst, mb_src))) {
		dst_hdr->buf_hdr.totsize += src_hdr->buf_hdr.totsize;
		return 0;
	}

	/* Fall back to using standard copy operations after maximum number of
	 * segments has been reached. */
	dst_len = odp_packet_len(*dst);
	src_len = odp_packet_len(src);
	pool = odp_packet_pool(*dst);

	new_dst = odp_packet_copy(*dst, pool);
	if (odp_unlikely(new_dst == ODP_PACKET_INVALID))
		return -1;

	if (odp_packet_extend_tail(&new_dst, src_len, NULL, NULL) >= 0) {
		(void)odp_packet_copy_from_pkt(new_dst, dst_len,
					       src, 0, src_len);
		odp_packet_free(*dst);
		odp_packet_free(src);
		*dst = new_dst;
		return 1;
	}

	odp_packet_free(new_dst);
	return -1;
}

int odp_packet_split(odp_packet_t *pkt, uint32_t len, odp_packet_t *tail)
{
	uint32_t pktlen = odp_packet_len(*pkt);

	if (len >= pktlen || tail == NULL)
		return -1;

	*tail = odp_packet_copy_part(*pkt, len, pktlen - len,
				     odp_packet_pool(*pkt));

	if (*tail == ODP_PACKET_INVALID)
		return -1;

	return odp_packet_trunc_tail(pkt, pktlen - len, NULL, NULL);
}

/*
 *
 * Copy
 * ********************************************************
 *
 */

odp_packet_t odp_packet_copy(odp_packet_t pkt, odp_pool_t pool)
{
	uint32_t pktlen = odp_packet_len(pkt);
	odp_packet_t newpkt = odp_packet_alloc(pool, pktlen);

	if (newpkt != ODP_PACKET_INVALID) {
		if (_odp_packet_copy_md_to_packet(pkt, newpkt) ||
		    odp_packet_copy_from_pkt(newpkt, 0, pkt, 0, pktlen)) {
			odp_packet_free(newpkt);
			newpkt = ODP_PACKET_INVALID;
		}
	}

	return newpkt;
}

odp_packet_t odp_packet_copy_part(odp_packet_t pkt, uint32_t offset,
				  uint32_t len, odp_pool_t pool)
{
	uint32_t pktlen = odp_packet_len(pkt);
	odp_packet_t newpkt;

	if (offset >= pktlen || offset + len > pktlen)
		return ODP_PACKET_INVALID;

	newpkt = odp_packet_alloc(pool, len);
	if (newpkt != ODP_PACKET_INVALID)
		odp_packet_copy_from_pkt(newpkt, 0, pkt, offset, len);

	return newpkt;
}

int odp_packet_copy_from_pkt(odp_packet_t dst, uint32_t dst_offset,
			     odp_packet_t src, uint32_t src_offset,
			     uint32_t len)
{
	odp_packet_hdr_t *dst_hdr = packet_hdr(dst);
	odp_packet_hdr_t *src_hdr = packet_hdr(src);
	void *dst_map;
	void *src_map;
	uint32_t cpylen, minseg;
	uint32_t dst_seglen = 0; /* GCC */
	uint32_t src_seglen = 0; /* GCC */
	int overlap;

	if (dst_offset + len > odp_packet_len(dst) ||
	    src_offset + len > odp_packet_len(src))
		return -1;

	overlap = (dst_hdr == src_hdr &&
		   ((dst_offset <= src_offset &&
		     dst_offset + len >= src_offset) ||
		    (src_offset <= dst_offset &&
		     src_offset + len >= dst_offset)));

	if (overlap && src_offset < dst_offset) {
		odp_packet_t temp =
			odp_packet_copy_part(src, src_offset, len,
					     odp_packet_pool(src));
		if (temp == ODP_PACKET_INVALID)
			return -1;
		odp_packet_copy_from_pkt(dst, dst_offset, temp, 0, len);
		odp_packet_free(temp);
		return 0;
	}

	while (len > 0) {
		dst_map = odp_packet_offset(dst, dst_offset, &dst_seglen, NULL);
		src_map = odp_packet_offset(src, src_offset, &src_seglen, NULL);

		minseg = dst_seglen > src_seglen ? src_seglen : dst_seglen;
		cpylen = len > minseg ? minseg : len;

		if (overlap)
			memmove(dst_map, src_map, cpylen);
		else
			memcpy(dst_map, src_map, cpylen);

		dst_offset += cpylen;
		src_offset += cpylen;
		len        -= cpylen;
	}

	return 0;
}

int odp_packet_copy_data(odp_packet_t pkt, uint32_t dst_offset,
			 uint32_t src_offset, uint32_t len)
{
	return odp_packet_copy_from_pkt(pkt, dst_offset,
					pkt, src_offset, len);
}

int odp_packet_move_data(odp_packet_t pkt, uint32_t dst_offset,
			 uint32_t src_offset, uint32_t len)
{
	return odp_packet_copy_from_pkt(pkt, dst_offset,
					pkt, src_offset, len);
}

int _odp_packet_set_data(odp_packet_t pkt, uint32_t offset,
			 uint8_t c, uint32_t len)
{
	void *mapaddr;
	uint32_t seglen = 0; /* GCC */
	uint32_t setlen;
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (offset + len > packet_len(pkt_hdr))
		return -1;

	while (len > 0) {
		mapaddr = _odp_packet_offset(pkt, offset, &seglen, NULL);
		setlen = len > seglen ? seglen : len;
		if (odp_unlikely(setlen == 0))
			return -1;
		memset(mapaddr, c, setlen);
		offset  += setlen;
		len     -= setlen;
	}

	return 0;
}

int _odp_packet_cmp_data(odp_packet_t pkt, uint32_t offset,
			 const void *s, uint32_t len)
{
	const uint8_t *ptr = s;
	void *mapaddr;
	uint32_t seglen = 0; /* GCC */
	uint32_t cmplen;
	int ret;
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	ODP_ASSERT(offset + len <= packet_len(pkt_hdr));

	while (len > 0) {
		mapaddr = _odp_packet_offset(pkt, offset, &seglen, NULL);
		cmplen = len > seglen ? seglen : len;
		ret = memcmp(mapaddr, ptr, cmplen);
		if (ret != 0)
			return ret;
		offset  += cmplen;
		len     -= cmplen;
		ptr     += cmplen;
	}

	return 0;
}

/*
 *
 * Debugging
 * ********************************************************
 *
 */

void odp_packet_print(odp_packet_t pkt)
{
	odp_packet_seg_t seg;
	int max_len = 1024;
	char str[max_len];
	int len = 0;
	int n = max_len - 1;
	odp_packet_hdr_t *hdr = packet_hdr(pkt);
	odp_buffer_t buf      = packet_to_buffer(pkt);

	len += snprintf(&str[len], n - len, "Packet ");
	len += odp_buffer_snprint(&str[len], n - len, buf);
	len += snprintf(&str[len], n - len, "  input_flags  0x%" PRIx64 "\n",
			hdr->p.input_flags.all);
	len += snprintf(&str[len], n - len, "  flags  0x%" PRIx32 "\n",
			hdr->p.flags.all_flags);
	len += snprintf(&str[len], n - len,
			"  l2_offset    %" PRIu32 "\n", hdr->p.l2_offset);
	len += snprintf(&str[len], n - len,
			"  l3_offset    %" PRIu32 "\n", hdr->p.l3_offset);
	len += snprintf(&str[len], n - len,
			"  l4_offset    %" PRIu32 "\n", hdr->p.l4_offset);
	len += snprintf(&str[len], n - len,
			"  frame_len    %" PRIu32 "\n",
			hdr->buf_hdr.mb.pkt_len);
	len += snprintf(&str[len], n - len,
			"  input        %" PRIu64 "\n",
			odp_pktio_to_u64(hdr->input));
	len += snprintf(&str[len], n - len,
			"  headroom     %" PRIu32 "\n",
			odp_packet_headroom(pkt));
	len += snprintf(&str[len], n - len,
			"  tailroom     %" PRIu32 "\n",
			odp_packet_tailroom(pkt));
	len += snprintf(&str[len], n - len,
			"  num_segs     %i\n", odp_packet_num_segs(pkt));

	seg = odp_packet_first_seg(pkt);

	while (seg != ODP_PACKET_SEG_INVALID) {
		len += snprintf(&str[len], n - len,
				"    seg_len    %-4" PRIu32 "  seg_data %p\n",
				odp_packet_seg_data_len(pkt, seg),
				odp_packet_seg_data(pkt, seg));

		seg = odp_packet_next_seg(pkt, seg);
	}

	str[len] = '\0';

	ODP_PRINT("\n%s\n", str);
}

void odp_packet_print_data(odp_packet_t pkt, uint32_t offset,
			   uint32_t byte_len)
{
	odp_packet_hdr_t *hdr = packet_hdr(pkt);
	uint32_t bytes_per_row = 16;
	int num_rows = (byte_len + bytes_per_row - 1) / bytes_per_row;
	int max_len = 256 + (3 * byte_len) + (3 * num_rows);
	char str[max_len];
	int len = 0;
	int n = max_len - 1;
	uint32_t data_len = odp_packet_len(pkt);
	pool_t *pool = hdr->buf_hdr.pool_ptr;

	len += snprintf(&str[len], n - len, "Packet\n------\n");
	len += snprintf(&str[len], n - len,
			"  pool name     %s\n", pool->name);
	len += snprintf(&str[len], n - len,
			"  buf index     %" PRIu32 "\n", hdr->buf_hdr.index);
	len += snprintf(&str[len], n - len,
			"  segcount      %" PRIu8 "\n",
			hdr->buf_hdr.mb.nb_segs);
	len += snprintf(&str[len], n - len,
			"  data len      %" PRIu32 "\n", data_len);
	len += snprintf(&str[len], n - len,
			"  data ptr      %p\n", odp_packet_data(pkt));
	len += snprintf(&str[len], n - len,
			"  print offset  %" PRIu32 "\n", offset);
	len += snprintf(&str[len], n - len,
			"  print length  %" PRIu32 "\n", byte_len);

	if (offset + byte_len > data_len) {
		len += snprintf(&str[len], n - len, " BAD OFFSET OR LEN\n");
		ODP_PRINT("%s\n", str);
		return;
	}

	while (byte_len) {
		uint32_t copy_len;
		uint8_t data[bytes_per_row];
		uint32_t i;

		if (byte_len > bytes_per_row)
			copy_len = bytes_per_row;
		else
			copy_len = byte_len;

		_odp_packet_copy_to_mem(pkt, offset, copy_len, data);

		len += snprintf(&str[len], n - len, " ");

		for (i = 0; i < copy_len; i++)
			len += snprintf(&str[len], n - len, " %02x", data[i]);

		len += snprintf(&str[len], n - len, "\n");

		byte_len -= copy_len;
		offset   += copy_len;
	}

	ODP_PRINT("%s\n", str);
}

int odp_packet_is_valid(odp_packet_t pkt)
{
	if (odp_buffer_is_valid(packet_to_buffer(pkt)) == 0)
		return 0;

	if (odp_event_type(odp_packet_to_event(pkt)) != ODP_EVENT_PACKET)
		return 0;

	return 1;
}

/*
 *
 * Internal Use Routines
 * ********************************************************
 *
 */

int _odp_packet_copy_md_to_packet(odp_packet_t srcpkt, odp_packet_t dstpkt)
{
	odp_packet_hdr_t *srchdr = packet_hdr(srcpkt);
	odp_packet_hdr_t *dsthdr = packet_hdr(dstpkt);
	uint32_t src_size = odp_packet_user_area_size(srcpkt);
	uint32_t dst_size = odp_packet_user_area_size(dstpkt);

	dsthdr->input = srchdr->input;
	dsthdr->dst_queue = srchdr->dst_queue;
	dsthdr->buf_hdr.user_ptr = srchdr->buf_hdr.user_ptr;

	dsthdr->buf_hdr.mb.port = srchdr->buf_hdr.mb.port;
	dsthdr->buf_hdr.mb.ol_flags = srchdr->buf_hdr.mb.ol_flags;
	dsthdr->buf_hdr.mb.packet_type = srchdr->buf_hdr.mb.packet_type;
	dsthdr->buf_hdr.mb.vlan_tci = srchdr->buf_hdr.mb.vlan_tci;
	dsthdr->buf_hdr.mb.hash = srchdr->buf_hdr.mb.hash;
	dsthdr->buf_hdr.mb.vlan_tci_outer = srchdr->buf_hdr.mb.vlan_tci_outer;
	dsthdr->buf_hdr.mb.tx_offload = srchdr->buf_hdr.mb.tx_offload;

	if (dst_size != 0)
		memcpy(odp_packet_user_area(dstpkt),
		       odp_packet_user_area(srcpkt),
		       dst_size <= src_size ? dst_size : src_size);

	copy_packet_parser_metadata(srchdr, dsthdr);

	/* Metadata copied, but return indication of whether the packet
	 * user area was truncated in the process. Note this can only
	 * happen when copying between different pools.
	 */
	return dst_size < src_size;
}

/** Parser helper function for Ethernet packets */
static inline uint16_t parse_eth(packet_parser_t *prs, const uint8_t **parseptr,
				 uint32_t *offset, uint32_t frame_len)
{
	uint16_t ethtype;
	const _odp_ethhdr_t *eth;
	uint16_t macaddr0, macaddr2, macaddr4;
	const _odp_vlanhdr_t *vlan;
	_odp_packet_input_flags_t input_flags;

	input_flags.all = 0;
	input_flags.l2  = 1;
	input_flags.eth = 1;

	eth = (const _odp_ethhdr_t *)*parseptr;

	/* Detect jumbo frames */
	if (odp_unlikely(frame_len > _ODP_ETH_LEN_MAX))
		input_flags.jumbo = 1;

	/* Handle Ethernet broadcast/multicast addresses */
	macaddr0 = _odp_be_to_cpu_16(*((const uint16_t *)(const void *)eth));
	if (odp_unlikely((macaddr0 & 0x0100) == 0x0100))
		input_flags.eth_mcast = 1;

	if (odp_unlikely(macaddr0 == 0xffff)) {
		macaddr2 =
			_odp_be_to_cpu_16(*((const uint16_t *)
					    (const void *)eth + 1));
		macaddr4 =
			_odp_be_to_cpu_16(*((const uint16_t *)
					    (const void *)eth + 2));

		if ((macaddr2 == 0xffff) && (macaddr4 == 0xffff))
			input_flags.eth_bcast = 1;
	}

	/* Get Ethertype */
	ethtype = _odp_be_to_cpu_16(eth->type);
	*offset += sizeof(*eth);
	*parseptr += sizeof(*eth);

	/* Check for SNAP vs. DIX */
	if (odp_unlikely(ethtype < _ODP_ETH_LEN_MAX)) {
		input_flags.snap = 1;
		if (ethtype > frame_len - *offset) {
			prs->flags.snap_len_err = 1;
			ethtype = 0;
			goto error;
		}
		ethtype = _odp_be_to_cpu_16(*((const uint16_t *)(uintptr_t)
					      (parseptr + 6)));
		*offset   += 8;
		*parseptr += 8;
	}

	/* Parse the VLAN header(s), if present */
	if (odp_unlikely(ethtype == _ODP_ETHTYPE_VLAN_OUTER)) {
		input_flags.vlan_qinq = 1;
		input_flags.vlan = 1;

		vlan = (const _odp_vlanhdr_t *)*parseptr;
		ethtype = _odp_be_to_cpu_16(vlan->type);
		*offset += sizeof(_odp_vlanhdr_t);
		*parseptr += sizeof(_odp_vlanhdr_t);
	}

	if (ethtype == _ODP_ETHTYPE_VLAN) {
		input_flags.vlan = 1;
		vlan = (const _odp_vlanhdr_t *)*parseptr;
		ethtype = _odp_be_to_cpu_16(vlan->type);
		*offset += sizeof(_odp_vlanhdr_t);
		*parseptr += sizeof(_odp_vlanhdr_t);
	}

error:
	prs->input_flags.all |= input_flags.all;

	return ethtype;
}

/**
 * Parser helper function for IPv4
 */
static inline uint8_t parse_ipv4(packet_parser_t *prs, const uint8_t **parseptr,
				 uint32_t *offset, uint32_t frame_len)
{
	const _odp_ipv4hdr_t *ipv4 = (const _odp_ipv4hdr_t *)*parseptr;
	uint32_t dstaddr = _odp_be_to_cpu_32(ipv4->dst_addr);
	uint32_t l3_len = _odp_be_to_cpu_16(ipv4->tot_len);
	uint16_t frag_offset = _odp_be_to_cpu_16(ipv4->frag_offset);
	uint8_t ver = _ODP_IPV4HDR_VER(ipv4->ver_ihl);
	uint8_t ihl = _ODP_IPV4HDR_IHL(ipv4->ver_ihl);

	if (odp_unlikely(ihl < _ODP_IPV4HDR_IHL_MIN ||
			 ver != 4 ||
			 (l3_len > frame_len - *offset))) {
		prs->flags.ip_err = 1;
		return 0;
	}

	*offset   += ihl * 4;
	*parseptr += ihl * 4;

	if (odp_unlikely(ihl > _ODP_IPV4HDR_IHL_MIN))
		prs->input_flags.ipopt = 1;

	/* A packet is a fragment if:
	*  "more fragments" flag is set (all fragments except the last)
	*     OR
	*  "fragment offset" field is nonzero (all fragments except the first)
	*/
	if (odp_unlikely(_ODP_IPV4HDR_IS_FRAGMENT(frag_offset)))
		prs->input_flags.ipfrag = 1;

	/* Handle IPv4 broadcast / multicast */
	if (odp_unlikely(dstaddr == 0xffffffff))
		prs->input_flags.ip_bcast = 1;

	if (odp_unlikely((dstaddr >> 28) == 0xe))
		prs->input_flags.ip_mcast = 1;

	return ipv4->proto;
}

/**
 * Parser helper function for IPv6
 */
static inline uint8_t parse_ipv6(packet_parser_t *prs, const uint8_t **parseptr,
				 uint32_t *offset, uint32_t frame_len,
				 uint32_t seg_len)
{
	const _odp_ipv6hdr_t *ipv6 = (const _odp_ipv6hdr_t *)*parseptr;
	const _odp_ipv6hdr_ext_t *ipv6ext;
	uint32_t dstaddr0 = _odp_be_to_cpu_32(ipv6->dst_addr.u8[0]);
	uint32_t l3_len = _odp_be_to_cpu_16(ipv6->payload_len) +
			_ODP_IPV6HDR_LEN;

	/* Basic sanity checks on IPv6 header */
	if ((_odp_be_to_cpu_32(ipv6->ver_tc_flow) >> 28) != 6 ||
	    l3_len > frame_len - *offset) {
		prs->flags.ip_err = 1;
		return 0;
	}

	/* IPv6 broadcast / multicast flags */
	prs->input_flags.ip_mcast = (dstaddr0 & 0xff000000) == 0xff000000;
	prs->input_flags.ip_bcast = 0;

	/* Skip past IPv6 header */
	*offset   += sizeof(_odp_ipv6hdr_t);
	*parseptr += sizeof(_odp_ipv6hdr_t);

	/* Skip past any IPv6 extension headers */
	if (ipv6->next_hdr == _ODP_IPPROTO_HOPOPTS ||
	    ipv6->next_hdr == _ODP_IPPROTO_ROUTE) {
		prs->input_flags.ipopt = 1;

		do  {
			ipv6ext    = (const _odp_ipv6hdr_ext_t *)*parseptr;
			uint16_t extlen = 8 + ipv6ext->ext_len * 8;

			*offset   += extlen;
			*parseptr += extlen;
		} while ((ipv6ext->next_hdr == _ODP_IPPROTO_HOPOPTS ||
			  ipv6ext->next_hdr == _ODP_IPPROTO_ROUTE) &&
			 *offset < seg_len);

		if (*offset >= prs->l3_offset +
		    _odp_be_to_cpu_16(ipv6->payload_len)) {
			prs->flags.ip_err = 1;
			return 0;
		}

		if (ipv6ext->next_hdr == _ODP_IPPROTO_FRAG)
			prs->input_flags.ipfrag = 1;

		return ipv6ext->next_hdr;
	}

	if (odp_unlikely(ipv6->next_hdr == _ODP_IPPROTO_FRAG)) {
		prs->input_flags.ipopt = 1;
		prs->input_flags.ipfrag = 1;
	}

	return ipv6->next_hdr;
}

/**
 * Parser helper function for TCP
 */
static inline void parse_tcp(packet_parser_t *prs, const uint8_t **parseptr)
{
	const _odp_tcphdr_t *tcp = (const _odp_tcphdr_t *)*parseptr;
	uint32_t len = tcp->hl * 4;

	if (odp_unlikely(tcp->hl < sizeof(_odp_tcphdr_t) / sizeof(uint32_t)))
		prs->flags.tcp_err = 1;

	*parseptr += len;
}

/**
 * Parser helper function for UDP
 */
static inline void parse_udp(packet_parser_t *prs, const uint8_t **parseptr)
{
	const _odp_udphdr_t *udp = (const _odp_udphdr_t *)*parseptr;
	uint32_t udplen = _odp_be_to_cpu_16(udp->length);
	uint16_t ipsec_port = _odp_cpu_to_be_16(_ODP_UDP_IPSEC_PORT);

	if (odp_unlikely(udplen < sizeof(_odp_udphdr_t)))
		prs->flags.udp_err = 1;

	if (odp_unlikely(ipsec_port == udp->dst_port && udplen > 4)) {
		uint32_t val;

		memcpy(&val, udp + 1, 4);
		if (val != 0) {
			prs->input_flags.ipsec = 1;
			prs->input_flags.ipsec_udp = 1;
		}
	}

	*parseptr += sizeof(_odp_udphdr_t);
}

static inline
int packet_parse_common_l3_l4(packet_parser_t *prs, const uint8_t *parseptr,
			      uint32_t offset,
			      uint32_t frame_len, uint32_t seg_len,
			      int layer, uint16_t ethtype)
{
	uint8_t  ip_proto;

	prs->l3_offset = offset;

	if (odp_unlikely(layer <= ODP_PROTO_LAYER_L2))
		return prs->flags.all.error != 0;

	/* Set l3 flag only for known ethtypes */
	prs->input_flags.l3 = 1;

	/* Parse Layer 3 headers */
	switch (ethtype) {
	case _ODP_ETHTYPE_IPV4:
		prs->input_flags.ipv4 = 1;
		ip_proto = parse_ipv4(prs, &parseptr, &offset, frame_len);
		prs->l4_offset = offset;
		break;

	case _ODP_ETHTYPE_IPV6:
		prs->input_flags.ipv6 = 1;
		ip_proto = parse_ipv6(prs, &parseptr, &offset, frame_len,
				      seg_len);
		prs->l4_offset = offset;
		break;

	case _ODP_ETHTYPE_ARP:
		prs->input_flags.arp = 1;
		ip_proto = 255;  /* Reserved invalid by IANA */
		break;

	default:
		prs->input_flags.l3 = 0;
		ip_proto = 255;  /* Reserved invalid by IANA */
	}

	if (layer == ODP_PROTO_LAYER_L3)
		return prs->flags.all.error != 0;

	/* Set l4 flag only for known ip_proto */
	prs->input_flags.l4 = 1;

	/* Parse Layer 4 headers */
	switch (ip_proto) {
	case _ODP_IPPROTO_ICMPV4:
	/* Fall through */

	case _ODP_IPPROTO_ICMPV6:
		prs->input_flags.icmp = 1;
		break;

	case _ODP_IPPROTO_IPIP:
		/* Do nothing */
		break;

	case _ODP_IPPROTO_TCP:
		if (odp_unlikely(offset + _ODP_TCPHDR_LEN > seg_len))
			return -1;
		prs->input_flags.tcp = 1;
		parse_tcp(prs, &parseptr);
		break;

	case _ODP_IPPROTO_UDP:
		if (odp_unlikely(offset + _ODP_UDPHDR_LEN > seg_len))
			return -1;
		prs->input_flags.udp = 1;
		parse_udp(prs, &parseptr);
		break;

	case _ODP_IPPROTO_AH:
		prs->input_flags.ipsec = 1;
		prs->input_flags.ipsec_ah = 1;
		break;

	case _ODP_IPPROTO_ESP:
		prs->input_flags.ipsec = 1;
		prs->input_flags.ipsec_esp = 1;
		break;

	case _ODP_IPPROTO_SCTP:
		prs->input_flags.sctp = 1;
		break;

	case _ODP_IPPROTO_NO_NEXT:
		prs->input_flags.no_next_hdr = 1;
		break;

	default:
		prs->input_flags.l4 = 0;
		break;
	}

	return prs->flags.all.error != 0;
}

/**
 * Parse common packet headers up to given layer
 *
 * The function expects at least PACKET_PARSE_SEG_LEN bytes of data to be
 * available from the ptr. Also parse metadata must be already initialized.
 */
int packet_parse_common(packet_parser_t *prs, const uint8_t *ptr,
			uint32_t frame_len, uint32_t seg_len,
			int layer)
{
	uint32_t offset;
	uint16_t ethtype;
	const uint8_t *parseptr;

	parseptr = ptr;
	offset = 0;

	if (odp_unlikely(layer == ODP_PROTO_LAYER_NONE))
		return 0;

	/* Assume valid L2 header, no CRC/FCS check in SW */
	prs->l2_offset = offset;

	ethtype = parse_eth(prs, &parseptr, &offset, frame_len);

	return packet_parse_common_l3_l4(prs, parseptr, offset, frame_len,
					 seg_len, layer, ethtype);
}

/**
 * Simple packet parser
 */
int packet_parse_layer(odp_packet_hdr_t *pkt_hdr,
		       odp_proto_layer_t layer)
{
	uint32_t seg_len = odp_packet_seg_len((odp_packet_t)pkt_hdr);
	uint32_t len = packet_len(pkt_hdr);
	void *base = odp_packet_data((odp_packet_t)pkt_hdr);

	return packet_parse_common(&pkt_hdr->p, base, len, seg_len, layer);
}

int odp_packet_parse(odp_packet_t pkt, uint32_t offset,
		     const odp_packet_parse_param_t *param)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);
	void *data;
	uint32_t seg_len;
	uint32_t len = packet_len(pkt_hdr);
	odp_proto_t proto = param->proto;
	odp_proto_layer_t layer = param->last_layer;
	int ret;
	uint16_t ethtype;

	if (proto == ODP_PROTO_NONE || layer == ODP_PROTO_LAYER_NONE)
		return -1;

	data = _odp_packet_offset(pkt, offset, &seg_len, NULL);

	if (data == NULL)
		return -1;

	packet_parse_reset(pkt_hdr);

	if (proto == ODP_PROTO_ETH) {
		ret = packet_parse_common(&pkt_hdr->p, data, len, seg_len,
					  layer);

		if (ret)
			return -1;
	} else {
		if (proto == ODP_PROTO_IPV4)
			ethtype = _ODP_ETHTYPE_IPV4;
		else
			ethtype = _ODP_ETHTYPE_IPV6;

		ret = packet_parse_common_l3_l4(&pkt_hdr->p, data, offset,
						len, seg_len, layer, ethtype);

		if (ret)
			return -1;
	}

	return 0;
}

int odp_packet_parse_multi(const odp_packet_t pkt[], const uint32_t offset[],
			   int num, const odp_packet_parse_param_t *param)
{
	int i;

	for (i = 0; i < num; i++)
		if (odp_packet_parse(pkt[i], offset[i], param))
			return i;

	return num;
}

uint64_t odp_packet_to_u64(odp_packet_t hdl)
{
	return _odp_pri(hdl);
}

uint64_t odp_packet_seg_to_u64(odp_packet_seg_t hdl)
{
	return _odp_pri(hdl);
}

odp_packet_t odp_packet_ref_static(odp_packet_t pkt)
{
	return odp_packet_copy(pkt, odp_packet_pool(pkt));
}

odp_packet_t odp_packet_ref(odp_packet_t pkt, uint32_t offset)
{
	odp_packet_t new;
	int ret;

	new = odp_packet_copy(pkt, odp_packet_pool(pkt));

	if (new == ODP_PACKET_INVALID) {
		ODP_ERR("copy failed\n");
		return ODP_PACKET_INVALID;
	}

	ret = odp_packet_trunc_head(&new, offset, NULL, NULL);

	if (ret < 0) {
		ODP_ERR("trunk_head failed\n");
		odp_packet_free(new);
		return ODP_PACKET_INVALID;
	}

	return new;
}

odp_packet_t odp_packet_ref_pkt(odp_packet_t pkt, uint32_t offset,
				odp_packet_t hdr)
{
	odp_packet_t new;
	int ret;

	new = odp_packet_copy(pkt, odp_packet_pool(pkt));

	if (new == ODP_PACKET_INVALID) {
		ODP_ERR("copy failed\n");
		return ODP_PACKET_INVALID;
	}

	if (offset) {
		ret = odp_packet_trunc_head(&new, offset, NULL, NULL);

		if (ret < 0) {
			ODP_ERR("trunk_head failed\n");
			odp_packet_free(new);
			return ODP_PACKET_INVALID;
		}
	}

	ret = odp_packet_concat(&hdr, new);

	if (ret < 0) {
		ODP_ERR("concat failed\n");
		odp_packet_free(new);
		return ODP_PACKET_INVALID;
	}

	return hdr;
}

int odp_packet_has_ref(odp_packet_t pkt)
{
	(void)pkt;

	return 0;
}

odp_proto_l2_type_t odp_packet_l2_type(odp_packet_t pkt)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (pkt_hdr->p.input_flags.eth)
		return ODP_PROTO_L2_TYPE_ETH;

	return ODP_PROTO_L2_TYPE_NONE;
}

odp_proto_l3_type_t odp_packet_l3_type(odp_packet_t pkt)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (pkt_hdr->p.input_flags.ipv4)
		return ODP_PROTO_L3_TYPE_IPV4;
	else if (pkt_hdr->p.input_flags.ipv6)
		return ODP_PROTO_L3_TYPE_IPV6;
	else if (pkt_hdr->p.input_flags.arp)
		return ODP_PROTO_L3_TYPE_ARP;

	return ODP_PROTO_L3_TYPE_NONE;
}

odp_proto_l4_type_t odp_packet_l4_type(odp_packet_t pkt)
{
	odp_packet_hdr_t *pkt_hdr = packet_hdr(pkt);

	if (pkt_hdr->p.input_flags.tcp)
		return ODP_PROTO_L4_TYPE_TCP;
	else if (pkt_hdr->p.input_flags.udp)
		return ODP_PROTO_L4_TYPE_UDP;
	else if (pkt_hdr->p.input_flags.sctp)
		return ODP_PROTO_L4_TYPE_SCTP;
	else if (pkt_hdr->p.input_flags.ipsec_ah)
		return ODP_PROTO_L4_TYPE_AH;
	else if (pkt_hdr->p.input_flags.ipsec_esp)
		return ODP_PROTO_L4_TYPE_ESP;
	else if (pkt_hdr->p.input_flags.icmp &&
		 pkt_hdr->p.input_flags.ipv4)
		return ODP_PROTO_L4_TYPE_ICMPV4;
	else if (pkt_hdr->p.input_flags.icmp &&
		 pkt_hdr->p.input_flags.ipv6)
		return ODP_PROTO_L4_TYPE_ICMPV6;
	else if (pkt_hdr->p.input_flags.no_next_hdr)
		return ODP_PROTO_L4_TYPE_NO_NEXT;

	return ODP_PROTO_L4_TYPE_NONE;
}