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42 #include <sys/queue.h>
44 #include <rte_debug.h>
45 #include <rte_common.h>
47 #include <rte_memory.h>
48 #include <rte_memzone.h>
49 #include <rte_launch.h>
50 #include <rte_tailq.h>
52 #include <rte_per_lcore.h>
53 #include <rte_lcore.h>
54 #include <rte_atomic.h>
55 #include <rte_branch_prediction.h>
57 #include <rte_mempool.h>
59 #include <rte_string_fns.h>
60 #include <rte_hexdump.h>
63 * ctrlmbuf constructor, given as a callback function to
64 * rte_mempool_create()
67 rte_ctrlmbuf_init(struct rte_mempool *mp,
68 __attribute__((unused)) void *opaque_arg,
70 __attribute__((unused)) unsigned i)
72 struct rte_mbuf *m = _m;
73 rte_pktmbuf_init(mp, opaque_arg, _m, i);
74 m->ol_flags |= CTRL_MBUF_FLAG;
78 * pktmbuf pool constructor, given as a callback function to
79 * rte_mempool_create()
82 rte_pktmbuf_pool_init(struct rte_mempool *mp, void *opaque_arg)
84 struct rte_pktmbuf_pool_private *mbp_priv;
87 mbp_priv = rte_mempool_get_priv(mp);
88 roomsz = (uint16_t)(uintptr_t)opaque_arg;
90 /* Use default data room size. */
92 roomsz = 2048 + RTE_PKTMBUF_HEADROOM;
94 mbp_priv->mbuf_data_room_size = roomsz;
98 * pktmbuf constructor, given as a callback function to
99 * rte_mempool_create().
100 * Set the fields of a packet mbuf to their default values.
103 rte_pktmbuf_init(struct rte_mempool *mp,
104 __attribute__((unused)) void *opaque_arg,
106 __attribute__((unused)) unsigned i)
108 struct rte_mbuf *m = _m;
109 uint32_t buf_len = mp->elt_size - sizeof(struct rte_mbuf);
111 RTE_MBUF_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf));
113 memset(m, 0, mp->elt_size);
115 /* start of buffer is just after mbuf structure */
116 m->buf_addr = (char *)m + sizeof(struct rte_mbuf);
117 m->buf_physaddr = rte_mempool_virt2phy(mp, m) +
118 sizeof(struct rte_mbuf);
119 m->buf_len = (uint16_t)buf_len;
121 /* keep some headroom between start of buffer and data */
122 m->data_off = RTE_MIN(RTE_PKTMBUF_HEADROOM, (uint16_t)m->buf_len);
124 /* init some constant fields */
130 /* do some sanity checks on a mbuf: panic if it fails */
132 rte_mbuf_sanity_check(const struct rte_mbuf *m, int is_header)
134 const struct rte_mbuf *m_seg;
138 rte_panic("mbuf is NULL\n");
142 rte_panic("bad mbuf pool\n");
143 if (m->buf_physaddr == 0)
144 rte_panic("bad phys addr\n");
145 if (m->buf_addr == NULL)
146 rte_panic("bad virt addr\n");
148 #ifdef RTE_MBUF_REFCNT
149 uint16_t cnt = rte_mbuf_refcnt_read(m);
150 if ((cnt == 0) || (cnt == UINT16_MAX))
151 rte_panic("bad ref cnt\n");
154 /* nothing to check for sub-segments */
158 nb_segs = m->nb_segs;
160 while (m_seg && nb_segs != 0) {
165 rte_panic("bad nb_segs\n");
168 /* dump a mbuf on console */
170 rte_pktmbuf_dump(FILE *f, const struct rte_mbuf *m, unsigned dump_len)
175 __rte_mbuf_sanity_check(m, 1);
177 fprintf(f, "dump mbuf at 0x%p, phys=%"PRIx64", buf_len=%u\n",
178 m, (uint64_t)m->buf_physaddr, (unsigned)m->buf_len);
179 fprintf(f, " pkt_len=%"PRIu32", ol_flags=%"PRIx64", nb_segs=%u, "
180 "in_port=%u\n", m->pkt_len, m->ol_flags,
181 (unsigned)m->nb_segs, (unsigned)m->port);
182 nb_segs = m->nb_segs;
184 while (m && nb_segs != 0) {
185 __rte_mbuf_sanity_check(m, 0);
187 fprintf(f, " segment at 0x%p, data=0x%p, data_len=%u\n",
188 m, rte_pktmbuf_mtod(m, void *), (unsigned)m->data_len);
190 if (len > m->data_len)
193 rte_hexdump(f, NULL, rte_pktmbuf_mtod(m, void *), len);