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numam-dpdk/lib/librte_mbuf/rte_mbuf.c
Santosh Shukla a103a97e71 eal: allow user to override default mempool driver 
DPDK has support for both sw and hw mempool and
currently user is limited to use ring_mp_mc pool.
In case user want to use other pool handle,
need to update config RTE_MEMPOOL_OPS_DEFAULT, then
build and run with desired pool handle.

Introducing eal option to override default pool handle.

Now user can override the RTE_MEMPOOL_OPS_DEFAULT by passing
pool handle to eal `--mbuf-pool-ops-name=""`.

Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2017-10-06 20:48:22 +02:00

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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_mempool.h>
#include <rte_mbuf.h>
#include <rte_string_fns.h>
#include <rte_hexdump.h>
#include <rte_errno.h>
#include <rte_memcpy.h>
/*
* ctrlmbuf constructor, given as a callback function to
* rte_mempool_obj_iter() or 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(), or called directly if using
* rte_mempool_create_empty()/rte_mempool_populate()
*/
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_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_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_obj_iter() or 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_ASSERT(RTE_ALIGN(priv_size, RTE_MBUF_PRIV_ALIGN) == priv_size);
RTE_ASSERT(mp->elt_size >= mbuf_size);
RTE_ASSERT(buf_len <= UINT16_MAX);
memset(m, 0, mbuf_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 = MBUF_INVALID_PORT;
rte_mbuf_refcnt_set(m, 1);
m->next = NULL;
}
/* 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_mempool *mp;
struct rte_pktmbuf_pool_private mbp_priv;
const char *mp_ops_name;
unsigned elt_size;
int ret;
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;
mp = rte_mempool_create_empty(name, n, elt_size, cache_size,
sizeof(struct rte_pktmbuf_pool_private), socket_id, 0);
if (mp == NULL)
return NULL;
mp_ops_name = rte_eal_mbuf_default_mempool_ops();
ret = rte_mempool_set_ops_byname(mp, mp_ops_name, NULL);
if (ret != 0) {
RTE_LOG(ERR, MBUF, "error setting mempool handler\n");
rte_mempool_free(mp);
rte_errno = -ret;
return NULL;
}
rte_pktmbuf_pool_init(mp, &mbp_priv);
ret = rte_mempool_populate_default(mp);
if (ret < 0) {
rte_mempool_free(mp);
rte_errno = -ret;
return NULL;
}
rte_mempool_obj_iter(mp, rte_pktmbuf_init, NULL);
return mp;
}
/* 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 %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 %p, data=%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 --;
}
}
/* read len data bytes in a mbuf at specified offset (internal) */
const void *__rte_pktmbuf_read(const struct rte_mbuf *m, uint32_t off,
uint32_t len, void *buf)
{
const struct rte_mbuf *seg = m;
uint32_t buf_off = 0, copy_len;
if (off + len > rte_pktmbuf_pkt_len(m))
return NULL;
while (off >= rte_pktmbuf_data_len(seg)) {
off -= rte_pktmbuf_data_len(seg);
seg = seg->next;
}
if (off + len <= rte_pktmbuf_data_len(seg))
return rte_pktmbuf_mtod_offset(seg, char *, off);
/* rare case: header is split among several segments */
while (len > 0) {
copy_len = rte_pktmbuf_data_len(seg) - off;
if (copy_len > len)
copy_len = len;
rte_memcpy((char *)buf + buf_off,
rte_pktmbuf_mtod_offset(seg, char *, off), copy_len);
off = 0;
buf_off += copy_len;
len -= copy_len;
seg = seg->next;
}
return buf;
}
/*
* 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_L4_CKSUM_GOOD: return "PKT_RX_L4_CKSUM_GOOD";
case PKT_RX_L4_CKSUM_NONE: return "PKT_RX_L4_CKSUM_NONE";
case PKT_RX_IP_CKSUM_BAD: return "PKT_RX_IP_CKSUM_BAD";
case PKT_RX_IP_CKSUM_GOOD: return "PKT_RX_IP_CKSUM_GOOD";
case PKT_RX_IP_CKSUM_NONE: return "PKT_RX_IP_CKSUM_NONE";
case PKT_RX_EIP_CKSUM_BAD: return "PKT_RX_EIP_CKSUM_BAD";
case PKT_RX_VLAN_STRIPPED: return "PKT_RX_VLAN_STRIPPED";
case PKT_RX_IEEE1588_PTP: return "PKT_RX_IEEE1588_PTP";
case PKT_RX_IEEE1588_TMST: return "PKT_RX_IEEE1588_TMST";
case PKT_RX_QINQ_STRIPPED: return "PKT_RX_QINQ_STRIPPED";
case PKT_RX_LRO: return "PKT_RX_LRO";
case PKT_RX_TIMESTAMP: return "PKT_RX_TIMESTAMP";
default: return NULL;
}
}
struct flag_mask {
uint64_t flag;
uint64_t mask;
const char *default_name;
};
/* write the list of rx ol flags in buffer buf */
int
rte_get_rx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
{
const struct flag_mask rx_flags[] = {
{ PKT_RX_VLAN_PKT, PKT_RX_VLAN_PKT, NULL },
{ PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, NULL },
{ PKT_RX_FDIR, PKT_RX_FDIR, NULL },
{ PKT_RX_L4_CKSUM_BAD, PKT_RX_L4_CKSUM_MASK, NULL },
{ PKT_RX_L4_CKSUM_GOOD, PKT_RX_L4_CKSUM_MASK, NULL },
{ PKT_RX_L4_CKSUM_NONE, PKT_RX_L4_CKSUM_MASK, NULL },
{ PKT_RX_L4_CKSUM_UNKNOWN, PKT_RX_L4_CKSUM_MASK,
"PKT_RX_L4_CKSUM_UNKNOWN" },
{ PKT_RX_IP_CKSUM_BAD, PKT_RX_IP_CKSUM_MASK, NULL },
{ PKT_RX_IP_CKSUM_GOOD, PKT_RX_IP_CKSUM_MASK, NULL },
{ PKT_RX_IP_CKSUM_NONE, PKT_RX_IP_CKSUM_MASK, NULL },
{ PKT_RX_IP_CKSUM_UNKNOWN, PKT_RX_IP_CKSUM_MASK,
"PKT_RX_IP_CKSUM_UNKNOWN" },
{ PKT_RX_EIP_CKSUM_BAD, PKT_RX_EIP_CKSUM_BAD, NULL },
{ PKT_RX_VLAN_STRIPPED, PKT_RX_VLAN_STRIPPED, NULL },
{ PKT_RX_IEEE1588_PTP, PKT_RX_IEEE1588_PTP, NULL },
{ PKT_RX_IEEE1588_TMST, PKT_RX_IEEE1588_TMST, NULL },
{ PKT_RX_QINQ_STRIPPED, PKT_RX_QINQ_STRIPPED, NULL },
{ PKT_RX_LRO, PKT_RX_LRO, NULL },
{ PKT_RX_TIMESTAMP, PKT_RX_TIMESTAMP, NULL },
};
const char *name;
unsigned int i;
int ret;
if (buflen == 0)
return -1;
buf[0] = '\0';
for (i = 0; i < RTE_DIM(rx_flags); i++) {
if ((mask & rx_flags[i].mask) != rx_flags[i].flag)
continue;
name = rte_get_rx_ol_flag_name(rx_flags[i].flag);
if (name == NULL)
name = rx_flags[i].default_name;
ret = snprintf(buf, buflen, "%s ", name);
if (ret < 0)
return -1;
if ((size_t)ret >= buflen)
return -1;
buf += ret;
buflen -= ret;
}
return 0;
}
/*
* 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";
case PKT_TX_TUNNEL_VXLAN: return "PKT_TX_TUNNEL_VXLAN";
case PKT_TX_TUNNEL_GRE: return "PKT_TX_TUNNEL_GRE";
case PKT_TX_TUNNEL_IPIP: return "PKT_TX_TUNNEL_IPIP";
case PKT_TX_TUNNEL_GENEVE: return "PKT_TX_TUNNEL_GENEVE";
case PKT_TX_TUNNEL_MPLSINUDP: return "PKT_TX_TUNNEL_MPLSINUDP";
case PKT_TX_MACSEC: return "PKT_TX_MACSEC";
default: return NULL;
}
}
/* write the list of tx ol flags in buffer buf */
int
rte_get_tx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
{
const struct flag_mask tx_flags[] = {
{ PKT_TX_VLAN_PKT, PKT_TX_VLAN_PKT, NULL },
{ PKT_TX_IP_CKSUM, PKT_TX_IP_CKSUM, NULL },
{ PKT_TX_TCP_CKSUM, PKT_TX_L4_MASK, NULL },
{ PKT_TX_SCTP_CKSUM, PKT_TX_L4_MASK, NULL },
{ PKT_TX_UDP_CKSUM, PKT_TX_L4_MASK, NULL },
{ PKT_TX_L4_NO_CKSUM, PKT_TX_L4_MASK, "PKT_TX_L4_NO_CKSUM" },
{ PKT_TX_IEEE1588_TMST, PKT_TX_IEEE1588_TMST, NULL },
{ PKT_TX_TCP_SEG, PKT_TX_TCP_SEG, NULL },
{ PKT_TX_IPV4, PKT_TX_IPV4, NULL },
{ PKT_TX_IPV6, PKT_TX_IPV6, NULL },
{ PKT_TX_OUTER_IP_CKSUM, PKT_TX_OUTER_IP_CKSUM, NULL },
{ PKT_TX_OUTER_IPV4, PKT_TX_OUTER_IPV4, NULL },
{ PKT_TX_OUTER_IPV6, PKT_TX_OUTER_IPV6, NULL },
{ PKT_TX_TUNNEL_VXLAN, PKT_TX_TUNNEL_MASK,
"PKT_TX_TUNNEL_NONE" },
{ PKT_TX_TUNNEL_GRE, PKT_TX_TUNNEL_MASK,
"PKT_TX_TUNNEL_NONE" },
{ PKT_TX_TUNNEL_IPIP, PKT_TX_TUNNEL_MASK,
"PKT_TX_TUNNEL_NONE" },
{ PKT_TX_TUNNEL_GENEVE, PKT_TX_TUNNEL_MASK,
"PKT_TX_TUNNEL_NONE" },
{ PKT_TX_TUNNEL_MPLSINUDP, PKT_TX_TUNNEL_MASK,
"PKT_TX_TUNNEL_NONE" },
{ PKT_TX_MACSEC, PKT_TX_MACSEC, NULL },
};
const char *name;
unsigned int i;
int ret;
if (buflen == 0)
return -1;
buf[0] = '\0';
for (i = 0; i < RTE_DIM(tx_flags); i++) {
if ((mask & tx_flags[i].mask) != tx_flags[i].flag)
continue;
name = rte_get_tx_ol_flag_name(tx_flags[i].flag);
if (name == NULL)
name = tx_flags[i].default_name;
ret = snprintf(buf, buflen, "%s ", name);
if (ret < 0)
return -1;
if ((size_t)ret >= buflen)
return -1;
buf += ret;
buflen -= ret;
}
return 0;
}
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