226 lines
6.2 KiB
C
226 lines
6.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdarg.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <ctype.h>
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#include <sys/queue.h>
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#include <rte_debug.h>
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#include <rte_common.h>
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#include <rte_log.h>
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#include <rte_memory.h>
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#include <rte_memzone.h>
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#include <rte_launch.h>
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#include <rte_tailq.h>
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#include <rte_eal.h>
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#include <rte_per_lcore.h>
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#include <rte_lcore.h>
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#include <rte_atomic.h>
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#include <rte_branch_prediction.h>
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#include <rte_ring.h>
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#include <rte_mempool.h>
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#include <rte_mbuf.h>
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#include <rte_string_fns.h>
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#include <rte_hexdump.h>
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/*
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* ctrlmbuf constructor, given as a callback function to
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* rte_mempool_create()
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*/
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void
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rte_ctrlmbuf_init(struct rte_mempool *mp,
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__attribute__((unused)) void *opaque_arg,
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void *_m,
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__attribute__((unused)) unsigned i)
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{
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struct rte_mbuf *m = _m;
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memset(m, 0, mp->elt_size);
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/* start of buffer is just after mbuf structure */
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m->buf_addr = (char *)m + sizeof(struct rte_mbuf);
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m->buf_physaddr = rte_mempool_virt2phy(mp, m) +
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sizeof(struct rte_mbuf);
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m->buf_len = (uint16_t) (mp->elt_size - sizeof(struct rte_mbuf));
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/* init some constant fields */
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m->type = RTE_MBUF_CTRL;
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m->ctrl.data = (char *)m->buf_addr;
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m->pool = (struct rte_mempool *)mp;
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}
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/*
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* pktmbuf pool constructor, given as a callback function to
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* rte_mempool_create()
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*/
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void
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rte_pktmbuf_pool_init(struct rte_mempool *mp, void *opaque_arg)
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{
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struct rte_pktmbuf_pool_private *mbp_priv;
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uint16_t roomsz;
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mbp_priv = rte_mempool_get_priv(mp);
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roomsz = (uint16_t)(uintptr_t)opaque_arg;
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/* Use default data room size. */
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if (0 == roomsz)
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roomsz = 2048 + RTE_PKTMBUF_HEADROOM;
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mbp_priv->mbuf_data_room_size = roomsz;
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}
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/*
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* pktmbuf constructor, given as a callback function to
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* rte_mempool_create().
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* Set the fields of a packet mbuf to their default values.
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*/
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void
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rte_pktmbuf_init(struct rte_mempool *mp,
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__attribute__((unused)) void *opaque_arg,
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void *_m,
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__attribute__((unused)) unsigned i)
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{
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struct rte_mbuf *m = _m;
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uint32_t buf_len = mp->elt_size - sizeof(struct rte_mbuf);
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RTE_MBUF_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf));
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memset(m, 0, mp->elt_size);
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/* start of buffer is just after mbuf structure */
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m->buf_addr = (char *)m + sizeof(struct rte_mbuf);
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m->buf_physaddr = rte_mempool_virt2phy(mp, m) +
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sizeof(struct rte_mbuf);
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m->buf_len = (uint16_t)buf_len;
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/* keep some headroom between start of buffer and data */
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m->pkt.data = (char*) m->buf_addr + RTE_MIN(RTE_PKTMBUF_HEADROOM, m->buf_len);
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/* init some constant fields */
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m->type = RTE_MBUF_PKT;
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m->pool = mp;
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m->pkt.nb_segs = 1;
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m->pkt.in_port = 0xff;
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}
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/* do some sanity checks on a mbuf: panic if it fails */
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void
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rte_mbuf_sanity_check(const struct rte_mbuf *m, enum rte_mbuf_type t,
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int is_header)
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{
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const struct rte_mbuf *m_seg;
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unsigned nb_segs;
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if (m == NULL)
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rte_panic("mbuf is NULL\n");
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if (m->type != (uint8_t)t)
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rte_panic("bad mbuf type\n");
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/* generic checks */
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if (m->pool == NULL)
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rte_panic("bad mbuf pool\n");
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if (m->buf_physaddr == 0)
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rte_panic("bad phys addr\n");
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if (m->buf_addr == NULL)
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rte_panic("bad virt addr\n");
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#ifdef RTE_MBUF_SCATTER_GATHER
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uint16_t cnt = rte_mbuf_refcnt_read(m);
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if ((cnt == 0) || (cnt == UINT16_MAX))
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rte_panic("bad ref cnt\n");
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#endif
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/* nothing to check for ctrl messages */
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if (m->type == RTE_MBUF_CTRL)
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return;
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/* check pkt consistency */
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else if (m->type == RTE_MBUF_PKT) {
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/* nothing to check for sub-segments */
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if (is_header == 0)
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return;
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nb_segs = m->pkt.nb_segs;
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m_seg = m;
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while (m_seg && nb_segs != 0) {
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m_seg = m_seg->pkt.next;
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nb_segs --;
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}
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if (nb_segs != 0)
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rte_panic("bad nb_segs\n");
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return;
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}
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rte_panic("unknown mbuf type\n");
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}
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/* dump a mbuf on console */
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void
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rte_pktmbuf_dump(const struct rte_mbuf *m, unsigned dump_len)
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{
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unsigned int len;
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unsigned nb_segs;
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__rte_mbuf_sanity_check(m, RTE_MBUF_PKT, 1);
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printf("dump mbuf at 0x%p, phys=%"PRIx64", buf_len=%u\n",
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m, (uint64_t)m->buf_physaddr, (unsigned)m->buf_len);
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printf(" pkt_len=%"PRIu32", ol_flags=%"PRIx16", nb_segs=%u, "
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"in_port=%u\n", m->pkt.pkt_len, m->ol_flags,
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(unsigned)m->pkt.nb_segs, (unsigned)m->pkt.in_port);
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nb_segs = m->pkt.nb_segs;
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while (m && nb_segs != 0) {
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__rte_mbuf_sanity_check(m, RTE_MBUF_PKT, 0);
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printf(" segment at 0x%p, data=0x%p, data_len=%u\n",
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m, m->pkt.data, (unsigned)m->pkt.data_len);
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len = dump_len;
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if (len > m->pkt.data_len)
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len = m->pkt.data_len;
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if (len != 0)
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rte_hexdump(NULL, m->pkt.data, len);
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dump_len -= len;
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m = m->pkt.next;
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nb_segs --;
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}
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}
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