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43 #include <sys/queue.h>
45 #include <rte_debug.h>
46 #include <rte_common.h>
48 #include <rte_memory.h>
49 #include <rte_memzone.h>
50 #include <rte_launch.h>
51 #include <rte_tailq.h>
53 #include <rte_per_lcore.h>
54 #include <rte_lcore.h>
55 #include <rte_atomic.h>
56 #include <rte_branch_prediction.h>
58 #include <rte_mempool.h>
60 #include <rte_string_fns.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;
143 rte_pktmbuf_hexdump(const void *buf, unsigned int len)
145 unsigned int i, out, ofs;
146 const unsigned char *data = buf;
150 printf(" dump data at 0x%p, len=%u\n", data, len);
153 out = rte_snprintf(line, LINE_LEN, " %08X", ofs);
154 for (i = 0; ofs+i < len && i < 16; i++)
155 out += rte_snprintf(line+out, LINE_LEN - out, " %02X",
158 out += rte_snprintf(line+out, LINE_LEN - out, " ");
159 for (i = 0; ofs < len && i < 16; i++, ofs++) {
160 unsigned char c = data[ofs];
161 if (!isascii(c) || !isprint(c))
163 out += rte_snprintf(line+out, LINE_LEN - out, "%c", c);
165 printf("%s\n", line);
169 /* do some sanity checks on a mbuf: panic if it fails */
171 rte_mbuf_sanity_check(const struct rte_mbuf *m, enum rte_mbuf_type t,
174 const struct rte_mbuf *m_seg;
178 rte_panic("mbuf is NULL\n");
179 if (m->type != (uint8_t)t)
180 rte_panic("bad mbuf type\n");
184 rte_panic("bad mbuf pool\n");
185 if (m->buf_physaddr == 0)
186 rte_panic("bad phys addr\n");
187 if (m->buf_addr == NULL)
188 rte_panic("bad virt addr\n");
190 #ifdef RTE_MBUF_SCATTER_GATHER
191 uint16_t cnt = rte_mbuf_refcnt_read(m);
192 if ((cnt == 0) || (cnt == UINT16_MAX))
193 rte_panic("bad ref cnt\n");
196 /* nothing to check for ctrl messages */
197 if (m->type == RTE_MBUF_CTRL)
200 /* check pkt consistency */
201 else if (m->type == RTE_MBUF_PKT) {
203 /* nothing to check for sub-segments */
207 nb_segs = m->pkt.nb_segs;
209 while (m_seg && nb_segs != 0) {
210 m_seg = m_seg->pkt.next;
214 rte_panic("bad nb_segs\n");
218 rte_panic("unknown mbuf type\n");
221 /* dump a mbuf on console */
223 rte_pktmbuf_dump(const struct rte_mbuf *m, unsigned dump_len)
228 __rte_mbuf_sanity_check(m, RTE_MBUF_PKT, 1);
230 printf("dump mbuf at 0x%p, phys=%"PRIx64", buf_len=%u\n",
231 m, (uint64_t)m->buf_physaddr, (unsigned)m->buf_len);
232 printf(" pkt_len=%"PRIx32", ol_flags=%"PRIx16", nb_segs=%u, "
233 "in_port=%u\n", m->pkt.pkt_len, m->ol_flags,
234 (unsigned)m->pkt.nb_segs, (unsigned)m->pkt.in_port);
235 nb_segs = m->pkt.nb_segs;
237 while (m && nb_segs != 0) {
238 __rte_mbuf_sanity_check(m, RTE_MBUF_PKT, 0);
240 printf(" segment at 0x%p, data=0x%p, data_len=%u\n",
241 m, m->pkt.data, (unsigned)m->pkt.data_len);
243 if (len > m->pkt.data_len)
244 len = m->pkt.data_len;
246 rte_pktmbuf_hexdump(m->pkt.data, len);