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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;
74 memset(m, 0, mp->elt_size);
76 /* start of buffer is just after mbuf structure */
77 m->buf_addr = (char *)m + sizeof(struct rte_mbuf);
78 m->buf_physaddr = rte_mempool_virt2phy(mp, m) +
79 sizeof(struct rte_mbuf);
80 m->buf_len = (uint16_t) (mp->elt_size - sizeof(struct rte_mbuf));
82 /* init some constant fields */
83 m->type = RTE_MBUF_CTRL;
84 m->ctrl.data = (char *)m->buf_addr;
85 m->pool = (struct rte_mempool *)mp;
89 * pktmbuf pool constructor, given as a callback function to
90 * rte_mempool_create()
93 rte_pktmbuf_pool_init(struct rte_mempool *mp, void *opaque_arg)
95 struct rte_pktmbuf_pool_private *mbp_priv;
98 mbp_priv = rte_mempool_get_priv(mp);
99 roomsz = (uint16_t)(uintptr_t)opaque_arg;
101 /* Use default data room size. */
103 roomsz = 2048 + RTE_PKTMBUF_HEADROOM;
105 mbp_priv->mbuf_data_room_size = roomsz;
109 * pktmbuf constructor, given as a callback function to
110 * rte_mempool_create().
111 * Set the fields of a packet mbuf to their default values.
114 rte_pktmbuf_init(struct rte_mempool *mp,
115 __attribute__((unused)) void *opaque_arg,
117 __attribute__((unused)) unsigned i)
119 struct rte_mbuf *m = _m;
120 uint32_t buf_len = mp->elt_size - sizeof(struct rte_mbuf);
122 RTE_MBUF_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf));
124 memset(m, 0, mp->elt_size);
126 /* start of buffer is just after mbuf structure */
127 m->buf_addr = (char *)m + sizeof(struct rte_mbuf);
128 m->buf_physaddr = rte_mempool_virt2phy(mp, m) +
129 sizeof(struct rte_mbuf);
130 m->buf_len = (uint16_t)buf_len;
132 /* keep some headroom between start of buffer and data */
133 m->pkt.data = (char*) m->buf_addr + RTE_MIN(RTE_PKTMBUF_HEADROOM, m->buf_len);
135 /* init some constant fields */
136 m->type = RTE_MBUF_PKT;
139 m->pkt.in_port = 0xff;
142 /* do some sanity checks on a mbuf: panic if it fails */
144 rte_mbuf_sanity_check(const struct rte_mbuf *m, enum rte_mbuf_type t,
147 const struct rte_mbuf *m_seg;
151 rte_panic("mbuf is NULL\n");
152 if (m->type != (uint8_t)t)
153 rte_panic("bad mbuf type\n");
157 rte_panic("bad mbuf pool\n");
158 if (m->buf_physaddr == 0)
159 rte_panic("bad phys addr\n");
160 if (m->buf_addr == NULL)
161 rte_panic("bad virt addr\n");
163 #ifdef RTE_MBUF_SCATTER_GATHER
164 uint16_t cnt = rte_mbuf_refcnt_read(m);
165 if ((cnt == 0) || (cnt == UINT16_MAX))
166 rte_panic("bad ref cnt\n");
169 /* nothing to check for ctrl messages */
170 if (m->type == RTE_MBUF_CTRL)
173 /* check pkt consistency */
174 else if (m->type == RTE_MBUF_PKT) {
176 /* nothing to check for sub-segments */
180 nb_segs = m->pkt.nb_segs;
182 while (m_seg && nb_segs != 0) {
183 m_seg = m_seg->pkt.next;
187 rte_panic("bad nb_segs\n");
191 rte_panic("unknown mbuf type\n");
194 /* dump a mbuf on console */
196 rte_pktmbuf_dump(const struct rte_mbuf *m, unsigned dump_len)
201 __rte_mbuf_sanity_check(m, RTE_MBUF_PKT, 1);
203 printf("dump mbuf at 0x%p, phys=%"PRIx64", buf_len=%u\n",
204 m, (uint64_t)m->buf_physaddr, (unsigned)m->buf_len);
205 printf(" pkt_len=%"PRIu32", ol_flags=%"PRIx16", nb_segs=%u, "
206 "in_port=%u\n", m->pkt.pkt_len, m->ol_flags,
207 (unsigned)m->pkt.nb_segs, (unsigned)m->pkt.in_port);
208 nb_segs = m->pkt.nb_segs;
210 while (m && nb_segs != 0) {
211 __rte_mbuf_sanity_check(m, RTE_MBUF_PKT, 0);
213 printf(" segment at 0x%p, data=0x%p, data_len=%u\n",
214 m, m->pkt.data, (unsigned)m->pkt.data_len);
216 if (len > m->pkt.data_len)
217 len = m->pkt.data_len;
219 rte_hexdump(NULL, m->pkt.data, len);