479 lines
14 KiB
C
479 lines
14 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* Copyright 2014 6WIND S.A.
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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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#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_launch.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_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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#include <rte_errno.h>
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#include <rte_memcpy.h>
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/*
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* ctrlmbuf constructor, given as a callback function to
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* rte_mempool_obj_iter() or 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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rte_pktmbuf_init(mp, opaque_arg, _m, i);
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m->ol_flags |= CTRL_MBUF_FLAG;
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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(), or called directly if using
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* rte_mempool_create_empty()/rte_mempool_populate()
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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 *user_mbp_priv, *mbp_priv;
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struct rte_pktmbuf_pool_private default_mbp_priv;
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uint16_t roomsz;
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RTE_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf));
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/* if no structure is provided, assume no mbuf private area */
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user_mbp_priv = opaque_arg;
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if (user_mbp_priv == NULL) {
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default_mbp_priv.mbuf_priv_size = 0;
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if (mp->elt_size > sizeof(struct rte_mbuf))
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roomsz = mp->elt_size - sizeof(struct rte_mbuf);
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else
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roomsz = 0;
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default_mbp_priv.mbuf_data_room_size = roomsz;
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user_mbp_priv = &default_mbp_priv;
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}
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RTE_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf) +
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user_mbp_priv->mbuf_data_room_size +
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user_mbp_priv->mbuf_priv_size);
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mbp_priv = rte_mempool_get_priv(mp);
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memcpy(mbp_priv, user_mbp_priv, sizeof(*mbp_priv));
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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_obj_iter() or 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 mbuf_size, buf_len, priv_size;
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priv_size = rte_pktmbuf_priv_size(mp);
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mbuf_size = sizeof(struct rte_mbuf) + priv_size;
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buf_len = rte_pktmbuf_data_room_size(mp);
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RTE_ASSERT(RTE_ALIGN(priv_size, RTE_MBUF_PRIV_ALIGN) == priv_size);
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RTE_ASSERT(mp->elt_size >= mbuf_size);
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RTE_ASSERT(buf_len <= UINT16_MAX);
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memset(m, 0, mbuf_size);
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/* start of buffer is after mbuf structure and priv data */
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m->priv_size = priv_size;
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m->buf_addr = (char *)m + mbuf_size;
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m->buf_iova = rte_mempool_virt2iova(m) + mbuf_size;
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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->data_off = RTE_MIN(RTE_PKTMBUF_HEADROOM, (uint16_t)m->buf_len);
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/* init some constant fields */
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m->pool = mp;
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m->nb_segs = 1;
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m->port = MBUF_INVALID_PORT;
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rte_mbuf_refcnt_set(m, 1);
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m->next = NULL;
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}
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/* helper to create a mbuf pool */
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struct rte_mempool *
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rte_pktmbuf_pool_create(const char *name, unsigned n,
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unsigned cache_size, uint16_t priv_size, uint16_t data_room_size,
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int socket_id)
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{
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struct rte_mempool *mp;
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struct rte_pktmbuf_pool_private mbp_priv;
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const char *mp_ops_name;
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unsigned elt_size;
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int ret;
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if (RTE_ALIGN(priv_size, RTE_MBUF_PRIV_ALIGN) != priv_size) {
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RTE_LOG(ERR, MBUF, "mbuf priv_size=%u is not aligned\n",
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priv_size);
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rte_errno = EINVAL;
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return NULL;
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}
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elt_size = sizeof(struct rte_mbuf) + (unsigned)priv_size +
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(unsigned)data_room_size;
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mbp_priv.mbuf_data_room_size = data_room_size;
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mbp_priv.mbuf_priv_size = priv_size;
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mp = rte_mempool_create_empty(name, n, elt_size, cache_size,
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sizeof(struct rte_pktmbuf_pool_private), socket_id, 0);
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if (mp == NULL)
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return NULL;
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mp_ops_name = rte_eal_mbuf_default_mempool_ops();
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ret = rte_mempool_set_ops_byname(mp, mp_ops_name, NULL);
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if (ret != 0) {
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RTE_LOG(ERR, MBUF, "error setting mempool handler\n");
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rte_mempool_free(mp);
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rte_errno = -ret;
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return NULL;
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}
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rte_pktmbuf_pool_init(mp, &mbp_priv);
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ret = rte_mempool_populate_default(mp);
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if (ret < 0) {
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rte_mempool_free(mp);
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rte_errno = -ret;
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return NULL;
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}
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rte_mempool_obj_iter(mp, rte_pktmbuf_init, NULL);
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return mp;
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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, int is_header)
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{
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const struct rte_mbuf *m_seg;
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unsigned int nb_segs;
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if (m == NULL)
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rte_panic("mbuf is NULL\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_iova == 0)
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rte_panic("bad IO 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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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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/* 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->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->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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}
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/* dump a mbuf on console */
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void
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rte_pktmbuf_dump(FILE *f, const struct rte_mbuf *m, unsigned dump_len)
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{
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unsigned int len;
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unsigned int nb_segs;
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__rte_mbuf_sanity_check(m, 1);
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fprintf(f, "dump mbuf at %p, iova=%"PRIx64", buf_len=%u\n",
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m, (uint64_t)m->buf_iova, (unsigned)m->buf_len);
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fprintf(f, " pkt_len=%"PRIu32", ol_flags=%"PRIx64", nb_segs=%u, "
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"in_port=%u\n", m->pkt_len, m->ol_flags,
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(unsigned)m->nb_segs, (unsigned)m->port);
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nb_segs = m->nb_segs;
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while (m && nb_segs != 0) {
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__rte_mbuf_sanity_check(m, 0);
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fprintf(f, " segment at %p, data=%p, data_len=%u\n",
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m, rte_pktmbuf_mtod(m, void *), (unsigned)m->data_len);
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len = dump_len;
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if (len > m->data_len)
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len = m->data_len;
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if (len != 0)
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rte_hexdump(f, NULL, rte_pktmbuf_mtod(m, void *), len);
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dump_len -= len;
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m = m->next;
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nb_segs --;
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}
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}
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/* read len data bytes in a mbuf at specified offset (internal) */
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const void *__rte_pktmbuf_read(const struct rte_mbuf *m, uint32_t off,
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uint32_t len, void *buf)
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{
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const struct rte_mbuf *seg = m;
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uint32_t buf_off = 0, copy_len;
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if (off + len > rte_pktmbuf_pkt_len(m))
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return NULL;
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while (off >= rte_pktmbuf_data_len(seg)) {
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off -= rte_pktmbuf_data_len(seg);
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seg = seg->next;
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}
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if (off + len <= rte_pktmbuf_data_len(seg))
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return rte_pktmbuf_mtod_offset(seg, char *, off);
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/* rare case: header is split among several segments */
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while (len > 0) {
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copy_len = rte_pktmbuf_data_len(seg) - off;
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if (copy_len > len)
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copy_len = len;
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rte_memcpy((char *)buf + buf_off,
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rte_pktmbuf_mtod_offset(seg, char *, off), copy_len);
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off = 0;
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buf_off += copy_len;
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len -= copy_len;
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seg = seg->next;
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}
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return buf;
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}
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/*
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* Get the name of a RX offload flag. Must be kept synchronized with flag
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* definitions in rte_mbuf.h.
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*/
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const char *rte_get_rx_ol_flag_name(uint64_t mask)
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{
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switch (mask) {
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case PKT_RX_VLAN: return "PKT_RX_VLAN";
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case PKT_RX_RSS_HASH: return "PKT_RX_RSS_HASH";
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case PKT_RX_FDIR: return "PKT_RX_FDIR";
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case PKT_RX_L4_CKSUM_BAD: return "PKT_RX_L4_CKSUM_BAD";
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case PKT_RX_L4_CKSUM_GOOD: return "PKT_RX_L4_CKSUM_GOOD";
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case PKT_RX_L4_CKSUM_NONE: return "PKT_RX_L4_CKSUM_NONE";
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case PKT_RX_IP_CKSUM_BAD: return "PKT_RX_IP_CKSUM_BAD";
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case PKT_RX_IP_CKSUM_GOOD: return "PKT_RX_IP_CKSUM_GOOD";
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case PKT_RX_IP_CKSUM_NONE: return "PKT_RX_IP_CKSUM_NONE";
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case PKT_RX_EIP_CKSUM_BAD: return "PKT_RX_EIP_CKSUM_BAD";
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case PKT_RX_VLAN_STRIPPED: return "PKT_RX_VLAN_STRIPPED";
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case PKT_RX_IEEE1588_PTP: return "PKT_RX_IEEE1588_PTP";
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case PKT_RX_IEEE1588_TMST: return "PKT_RX_IEEE1588_TMST";
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case PKT_RX_QINQ_STRIPPED: return "PKT_RX_QINQ_STRIPPED";
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case PKT_RX_LRO: return "PKT_RX_LRO";
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case PKT_RX_TIMESTAMP: return "PKT_RX_TIMESTAMP";
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case PKT_RX_SEC_OFFLOAD: return "PKT_RX_SEC_OFFLOAD";
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case PKT_RX_SEC_OFFLOAD_FAILED: return "PKT_RX_SEC_OFFLOAD_FAILED";
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default: return NULL;
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}
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}
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struct flag_mask {
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uint64_t flag;
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uint64_t mask;
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const char *default_name;
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};
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/* write the list of rx ol flags in buffer buf */
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int
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rte_get_rx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
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{
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const struct flag_mask rx_flags[] = {
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{ PKT_RX_VLAN, PKT_RX_VLAN, NULL },
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{ PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, NULL },
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{ PKT_RX_FDIR, PKT_RX_FDIR, NULL },
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{ PKT_RX_L4_CKSUM_BAD, PKT_RX_L4_CKSUM_MASK, NULL },
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{ PKT_RX_L4_CKSUM_GOOD, PKT_RX_L4_CKSUM_MASK, NULL },
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{ PKT_RX_L4_CKSUM_NONE, PKT_RX_L4_CKSUM_MASK, NULL },
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{ PKT_RX_L4_CKSUM_UNKNOWN, PKT_RX_L4_CKSUM_MASK,
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"PKT_RX_L4_CKSUM_UNKNOWN" },
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{ PKT_RX_IP_CKSUM_BAD, PKT_RX_IP_CKSUM_MASK, NULL },
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{ PKT_RX_IP_CKSUM_GOOD, PKT_RX_IP_CKSUM_MASK, NULL },
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{ PKT_RX_IP_CKSUM_NONE, PKT_RX_IP_CKSUM_MASK, NULL },
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{ PKT_RX_IP_CKSUM_UNKNOWN, PKT_RX_IP_CKSUM_MASK,
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"PKT_RX_IP_CKSUM_UNKNOWN" },
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{ PKT_RX_EIP_CKSUM_BAD, PKT_RX_EIP_CKSUM_BAD, NULL },
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{ PKT_RX_VLAN_STRIPPED, PKT_RX_VLAN_STRIPPED, NULL },
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{ PKT_RX_IEEE1588_PTP, PKT_RX_IEEE1588_PTP, NULL },
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{ PKT_RX_IEEE1588_TMST, PKT_RX_IEEE1588_TMST, NULL },
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{ PKT_RX_QINQ_STRIPPED, PKT_RX_QINQ_STRIPPED, NULL },
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{ PKT_RX_LRO, PKT_RX_LRO, NULL },
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{ PKT_RX_TIMESTAMP, PKT_RX_TIMESTAMP, NULL },
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{ PKT_RX_SEC_OFFLOAD, PKT_RX_SEC_OFFLOAD, NULL },
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{ PKT_RX_SEC_OFFLOAD_FAILED, PKT_RX_SEC_OFFLOAD_FAILED, NULL },
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{ PKT_RX_QINQ, PKT_RX_QINQ, NULL },
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};
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const char *name;
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unsigned int i;
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int ret;
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if (buflen == 0)
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return -1;
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buf[0] = '\0';
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for (i = 0; i < RTE_DIM(rx_flags); i++) {
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if ((mask & rx_flags[i].mask) != rx_flags[i].flag)
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continue;
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name = rte_get_rx_ol_flag_name(rx_flags[i].flag);
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if (name == NULL)
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name = rx_flags[i].default_name;
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ret = snprintf(buf, buflen, "%s ", name);
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if (ret < 0)
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return -1;
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if ((size_t)ret >= buflen)
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return -1;
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buf += ret;
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buflen -= ret;
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}
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return 0;
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}
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/*
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* Get the name of a TX offload flag. Must be kept synchronized with flag
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* definitions in rte_mbuf.h.
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*/
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const char *rte_get_tx_ol_flag_name(uint64_t mask)
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{
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switch (mask) {
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case PKT_TX_VLAN_PKT: return "PKT_TX_VLAN_PKT";
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case PKT_TX_IP_CKSUM: return "PKT_TX_IP_CKSUM";
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case PKT_TX_TCP_CKSUM: return "PKT_TX_TCP_CKSUM";
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case PKT_TX_SCTP_CKSUM: return "PKT_TX_SCTP_CKSUM";
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case PKT_TX_UDP_CKSUM: return "PKT_TX_UDP_CKSUM";
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case PKT_TX_IEEE1588_TMST: return "PKT_TX_IEEE1588_TMST";
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case PKT_TX_TCP_SEG: return "PKT_TX_TCP_SEG";
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case PKT_TX_IPV4: return "PKT_TX_IPV4";
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case PKT_TX_IPV6: return "PKT_TX_IPV6";
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case PKT_TX_OUTER_IP_CKSUM: return "PKT_TX_OUTER_IP_CKSUM";
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case PKT_TX_OUTER_IPV4: return "PKT_TX_OUTER_IPV4";
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case PKT_TX_OUTER_IPV6: return "PKT_TX_OUTER_IPV6";
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case PKT_TX_TUNNEL_VXLAN: return "PKT_TX_TUNNEL_VXLAN";
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case PKT_TX_TUNNEL_GRE: return "PKT_TX_TUNNEL_GRE";
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case PKT_TX_TUNNEL_IPIP: return "PKT_TX_TUNNEL_IPIP";
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case PKT_TX_TUNNEL_GENEVE: return "PKT_TX_TUNNEL_GENEVE";
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case PKT_TX_TUNNEL_MPLSINUDP: return "PKT_TX_TUNNEL_MPLSINUDP";
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case PKT_TX_MACSEC: return "PKT_TX_MACSEC";
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case PKT_TX_SEC_OFFLOAD: return "PKT_TX_SEC_OFFLOAD";
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default: return NULL;
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}
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}
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/* write the list of tx ol flags in buffer buf */
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int
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rte_get_tx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
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{
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const struct flag_mask tx_flags[] = {
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{ PKT_TX_VLAN_PKT, PKT_TX_VLAN_PKT, NULL },
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{ PKT_TX_IP_CKSUM, PKT_TX_IP_CKSUM, NULL },
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{ PKT_TX_TCP_CKSUM, PKT_TX_L4_MASK, NULL },
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{ PKT_TX_SCTP_CKSUM, PKT_TX_L4_MASK, NULL },
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{ PKT_TX_UDP_CKSUM, PKT_TX_L4_MASK, NULL },
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{ PKT_TX_L4_NO_CKSUM, PKT_TX_L4_MASK, "PKT_TX_L4_NO_CKSUM" },
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{ PKT_TX_IEEE1588_TMST, PKT_TX_IEEE1588_TMST, NULL },
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{ PKT_TX_TCP_SEG, PKT_TX_TCP_SEG, NULL },
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{ PKT_TX_IPV4, PKT_TX_IPV4, NULL },
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{ PKT_TX_IPV6, PKT_TX_IPV6, NULL },
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{ PKT_TX_OUTER_IP_CKSUM, PKT_TX_OUTER_IP_CKSUM, NULL },
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{ PKT_TX_OUTER_IPV4, PKT_TX_OUTER_IPV4, NULL },
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{ PKT_TX_OUTER_IPV6, PKT_TX_OUTER_IPV6, NULL },
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{ PKT_TX_TUNNEL_VXLAN, PKT_TX_TUNNEL_MASK,
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"PKT_TX_TUNNEL_NONE" },
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{ PKT_TX_TUNNEL_GRE, PKT_TX_TUNNEL_MASK,
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"PKT_TX_TUNNEL_NONE" },
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{ PKT_TX_TUNNEL_IPIP, PKT_TX_TUNNEL_MASK,
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"PKT_TX_TUNNEL_NONE" },
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{ PKT_TX_TUNNEL_GENEVE, PKT_TX_TUNNEL_MASK,
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"PKT_TX_TUNNEL_NONE" },
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{ PKT_TX_TUNNEL_MPLSINUDP, PKT_TX_TUNNEL_MASK,
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"PKT_TX_TUNNEL_NONE" },
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{ PKT_TX_MACSEC, PKT_TX_MACSEC, NULL },
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{ PKT_TX_SEC_OFFLOAD, PKT_TX_SEC_OFFLOAD, NULL },
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};
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const char *name;
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unsigned int i;
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int ret;
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if (buflen == 0)
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return -1;
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buf[0] = '\0';
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for (i = 0; i < RTE_DIM(tx_flags); i++) {
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if ((mask & tx_flags[i].mask) != tx_flags[i].flag)
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continue;
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name = rte_get_tx_ol_flag_name(tx_flags[i].flag);
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if (name == NULL)
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name = tx_flags[i].default_name;
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ret = snprintf(buf, buflen, "%s ", name);
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if (ret < 0)
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return -1;
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if ((size_t)ret >= buflen)
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return -1;
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buf += ret;
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buflen -= ret;
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}
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return 0;
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}
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