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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* Copyright 2014 6WIND S.A.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdarg.h>
#include <inttypes.h>
#include <errno.h>
#include <ctype.h>
#include <sys/queue.h>
#include <rte_debug.h>
#include <rte_common.h>
#include <rte_log.h>
#include <rte_memory.h>
#include <rte_memzone.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_ring.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_string_fns.h>
#include <rte_hexdump.h>
#include <rte_errno.h>
/*
* ctrlmbuf constructor, given as a callback function to
* rte_mempool_create()
*/
void
rte_ctrlmbuf_init(struct rte_mempool *mp,
__attribute__((unused)) void *opaque_arg,
void *_m,
__attribute__((unused)) unsigned i)
{
struct rte_mbuf *m = _m;
rte_pktmbuf_init(mp, opaque_arg, _m, i);
m->ol_flags |= CTRL_MBUF_FLAG;
}
/*
* pktmbuf pool constructor, given as a callback function to
* rte_mempool_create()
*/
void
rte_pktmbuf_pool_init(struct rte_mempool *mp, void *opaque_arg)
{
struct rte_pktmbuf_pool_private *user_mbp_priv, *mbp_priv;
struct rte_pktmbuf_pool_private default_mbp_priv;
uint16_t roomsz;
RTE_MBUF_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf));
/* if no structure is provided, assume no mbuf private area */
user_mbp_priv = opaque_arg;
if (user_mbp_priv == NULL) {
default_mbp_priv.mbuf_priv_size = 0;
if (mp->elt_size > sizeof(struct rte_mbuf))
roomsz = mp->elt_size - sizeof(struct rte_mbuf);
else
roomsz = 0;
default_mbp_priv.mbuf_data_room_size = roomsz;
user_mbp_priv = &default_mbp_priv;
}
RTE_MBUF_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf) +
user_mbp_priv->mbuf_data_room_size +
user_mbp_priv->mbuf_priv_size);
mbp_priv = rte_mempool_get_priv(mp);
memcpy(mbp_priv, user_mbp_priv, sizeof(*mbp_priv));
}
/*
* pktmbuf constructor, given as a callback function to
* rte_mempool_create().
* Set the fields of a packet mbuf to their default values.
*/
void
rte_pktmbuf_init(struct rte_mempool *mp,
__attribute__((unused)) void *opaque_arg,
void *_m,
__attribute__((unused)) unsigned i)
{
struct rte_mbuf *m = _m;
uint32_t mbuf_size, buf_len, priv_size;
priv_size = rte_pktmbuf_priv_size(mp);
mbuf_size = sizeof(struct rte_mbuf) + priv_size;
buf_len = rte_pktmbuf_data_room_size(mp);
RTE_MBUF_ASSERT(RTE_ALIGN(priv_size, RTE_MBUF_PRIV_ALIGN) == priv_size);
RTE_MBUF_ASSERT(mp->elt_size >= mbuf_size);
RTE_MBUF_ASSERT(buf_len <= UINT16_MAX);
memset(m, 0, mp->elt_size);
/* start of buffer is after mbuf structure and priv data */
m->priv_size = priv_size;
m->buf_addr = (char *)m + mbuf_size;
m->buf_physaddr = rte_mempool_virt2phy(mp, m) + mbuf_size;
m->buf_len = (uint16_t)buf_len;
/* keep some headroom between start of buffer and data */
m->data_off = RTE_MIN(RTE_PKTMBUF_HEADROOM, (uint16_t)m->buf_len);
/* init some constant fields */
m->pool = mp;
m->nb_segs = 1;
m->port = 0xff;
}
/* helper to create a mbuf pool */
struct rte_mempool *
rte_pktmbuf_pool_create(const char *name, unsigned n,
unsigned cache_size, uint16_t priv_size, uint16_t data_room_size,
int socket_id)
{
struct rte_pktmbuf_pool_private mbp_priv;
unsigned elt_size;
if (RTE_ALIGN(priv_size, RTE_MBUF_PRIV_ALIGN) != priv_size) {
RTE_LOG(ERR, MBUF, "mbuf priv_size=%u is not aligned\n",
priv_size);
rte_errno = EINVAL;
return NULL;
}
elt_size = sizeof(struct rte_mbuf) + (unsigned)priv_size +
(unsigned)data_room_size;
mbp_priv.mbuf_data_room_size = data_room_size;
mbp_priv.mbuf_priv_size = priv_size;
return rte_mempool_create(name, n, elt_size,
cache_size, sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init, &mbp_priv, rte_pktmbuf_init, NULL,
socket_id, 0);
}
/* do some sanity checks on a mbuf: panic if it fails */
void
rte_mbuf_sanity_check(const struct rte_mbuf *m, int is_header)
{
const struct rte_mbuf *m_seg;
unsigned nb_segs;
if (m == NULL)
rte_panic("mbuf is NULL\n");
/* generic checks */
if (m->pool == NULL)
rte_panic("bad mbuf pool\n");
if (m->buf_physaddr == 0)
rte_panic("bad phys addr\n");
if (m->buf_addr == NULL)
rte_panic("bad virt addr\n");
uint16_t cnt = rte_mbuf_refcnt_read(m);
if ((cnt == 0) || (cnt == UINT16_MAX))
rte_panic("bad ref cnt\n");
/* nothing to check for sub-segments */
if (is_header == 0)
return;
nb_segs = m->nb_segs;
m_seg = m;
while (m_seg && nb_segs != 0) {
m_seg = m_seg->next;
nb_segs--;
}
if (nb_segs != 0)
rte_panic("bad nb_segs\n");
}
/* dump a mbuf on console */
void
rte_pktmbuf_dump(FILE *f, const struct rte_mbuf *m, unsigned dump_len)
{
unsigned int len;
unsigned nb_segs;
__rte_mbuf_sanity_check(m, 1);
fprintf(f, "dump mbuf at 0x%p, phys=%"PRIx64", buf_len=%u\n",
m, (uint64_t)m->buf_physaddr, (unsigned)m->buf_len);
fprintf(f, " pkt_len=%"PRIu32", ol_flags=%"PRIx64", nb_segs=%u, "
"in_port=%u\n", m->pkt_len, m->ol_flags,
(unsigned)m->nb_segs, (unsigned)m->port);
nb_segs = m->nb_segs;
while (m && nb_segs != 0) {
__rte_mbuf_sanity_check(m, 0);
fprintf(f, " segment at 0x%p, data=0x%p, data_len=%u\n",
m, rte_pktmbuf_mtod(m, void *), (unsigned)m->data_len);
len = dump_len;
if (len > m->data_len)
len = m->data_len;
if (len != 0)
rte_hexdump(f, NULL, rte_pktmbuf_mtod(m, void *), len);
dump_len -= len;
m = m->next;
nb_segs --;
}
}
/*
* Get the name of a RX offload flag. Must be kept synchronized with flag
* definitions in rte_mbuf.h.
*/
const char *rte_get_rx_ol_flag_name(uint64_t mask)
{
switch (mask) {
case PKT_RX_VLAN_PKT: return "PKT_RX_VLAN_PKT";
case PKT_RX_RSS_HASH: return "PKT_RX_RSS_HASH";
case PKT_RX_FDIR: return "PKT_RX_FDIR";
case PKT_RX_L4_CKSUM_BAD: return "PKT_RX_L4_CKSUM_BAD";
case PKT_RX_IP_CKSUM_BAD: return "PKT_RX_IP_CKSUM_BAD";
case PKT_RX_EIP_CKSUM_BAD: return "PKT_RX_EIP_CKSUM_BAD";
/* case PKT_RX_OVERSIZE: return "PKT_RX_OVERSIZE"; */
/* case PKT_RX_HBUF_OVERFLOW: return "PKT_RX_HBUF_OVERFLOW"; */
/* case PKT_RX_RECIP_ERR: return "PKT_RX_RECIP_ERR"; */
/* case PKT_RX_MAC_ERR: return "PKT_RX_MAC_ERR"; */
case PKT_RX_IEEE1588_PTP: return "PKT_RX_IEEE1588_PTP";
case PKT_RX_IEEE1588_TMST: return "PKT_RX_IEEE1588_TMST";
default: return NULL;
}
}
/*
* Get the name of a TX offload flag. Must be kept synchronized with flag
* definitions in rte_mbuf.h.
*/
const char *rte_get_tx_ol_flag_name(uint64_t mask)
{
switch (mask) {
case PKT_TX_VLAN_PKT: return "PKT_TX_VLAN_PKT";
case PKT_TX_IP_CKSUM: return "PKT_TX_IP_CKSUM";
case PKT_TX_TCP_CKSUM: return "PKT_TX_TCP_CKSUM";
case PKT_TX_SCTP_CKSUM: return "PKT_TX_SCTP_CKSUM";
case PKT_TX_UDP_CKSUM: return "PKT_TX_UDP_CKSUM";
case PKT_TX_IEEE1588_TMST: return "PKT_TX_IEEE1588_TMST";
case PKT_TX_TCP_SEG: return "PKT_TX_TCP_SEG";
case PKT_TX_IPV4: return "PKT_TX_IPV4";
case PKT_TX_IPV6: return "PKT_TX_IPV6";
case PKT_TX_OUTER_IP_CKSUM: return "PKT_TX_OUTER_IP_CKSUM";
case PKT_TX_OUTER_IPV4: return "PKT_TX_OUTER_IPV4";
case PKT_TX_OUTER_IPV6: return "PKT_TX_OUTER_IPV6";
default: return NULL;
}
}
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