4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 * Copyright 2014 6WIND S.A.
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15 * notice, this list of conditions and the following disclaimer in
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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_launch.h>
51 #include <rte_per_lcore.h>
52 #include <rte_lcore.h>
53 #include <rte_atomic.h>
54 #include <rte_branch_prediction.h>
55 #include <rte_mempool.h>
57 #include <rte_mbuf_pool_ops.h>
58 #include <rte_string_fns.h>
59 #include <rte_hexdump.h>
60 #include <rte_errno.h>
61 #include <rte_memcpy.h>
64 * ctrlmbuf constructor, given as a callback function to
65 * rte_mempool_obj_iter() or rte_mempool_create()
68 rte_ctrlmbuf_init(struct rte_mempool *mp,
69 __attribute__((unused)) void *opaque_arg,
71 __attribute__((unused)) unsigned i)
73 struct rte_mbuf *m = _m;
74 rte_pktmbuf_init(mp, opaque_arg, _m, i);
75 m->ol_flags |= CTRL_MBUF_FLAG;
79 * pktmbuf pool constructor, given as a callback function to
80 * rte_mempool_create(), or called directly if using
81 * rte_mempool_create_empty()/rte_mempool_populate()
84 rte_pktmbuf_pool_init(struct rte_mempool *mp, void *opaque_arg)
86 struct rte_pktmbuf_pool_private *user_mbp_priv, *mbp_priv;
87 struct rte_pktmbuf_pool_private default_mbp_priv;
90 RTE_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf));
92 /* if no structure is provided, assume no mbuf private area */
93 user_mbp_priv = opaque_arg;
94 if (user_mbp_priv == NULL) {
95 default_mbp_priv.mbuf_priv_size = 0;
96 if (mp->elt_size > sizeof(struct rte_mbuf))
97 roomsz = mp->elt_size - sizeof(struct rte_mbuf);
100 default_mbp_priv.mbuf_data_room_size = roomsz;
101 user_mbp_priv = &default_mbp_priv;
104 RTE_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf) +
105 user_mbp_priv->mbuf_data_room_size +
106 user_mbp_priv->mbuf_priv_size);
108 mbp_priv = rte_mempool_get_priv(mp);
109 memcpy(mbp_priv, user_mbp_priv, sizeof(*mbp_priv));
113 * pktmbuf constructor, given as a callback function to
114 * rte_mempool_obj_iter() or rte_mempool_create().
115 * Set the fields of a packet mbuf to their default values.
118 rte_pktmbuf_init(struct rte_mempool *mp,
119 __attribute__((unused)) void *opaque_arg,
121 __attribute__((unused)) unsigned i)
123 struct rte_mbuf *m = _m;
124 uint32_t mbuf_size, buf_len, priv_size;
126 priv_size = rte_pktmbuf_priv_size(mp);
127 mbuf_size = sizeof(struct rte_mbuf) + priv_size;
128 buf_len = rte_pktmbuf_data_room_size(mp);
130 RTE_ASSERT(RTE_ALIGN(priv_size, RTE_MBUF_PRIV_ALIGN) == priv_size);
131 RTE_ASSERT(mp->elt_size >= mbuf_size);
132 RTE_ASSERT(buf_len <= UINT16_MAX);
134 memset(m, 0, mbuf_size);
135 /* start of buffer is after mbuf structure and priv data */
136 m->priv_size = priv_size;
137 m->buf_addr = (char *)m + mbuf_size;
138 m->buf_iova = rte_mempool_virt2iova(m) + mbuf_size;
139 m->buf_len = (uint16_t)buf_len;
141 /* keep some headroom between start of buffer and data */
142 m->data_off = RTE_MIN(RTE_PKTMBUF_HEADROOM, (uint16_t)m->buf_len);
144 /* init some constant fields */
147 m->port = MBUF_INVALID_PORT;
148 rte_mbuf_refcnt_set(m, 1);
152 /* Helper to create a mbuf pool with given mempool ops name*/
154 rte_pktmbuf_pool_create_by_ops(const char *name, unsigned int n,
155 unsigned int cache_size, uint16_t priv_size, uint16_t data_room_size,
156 int socket_id, const char *ops_name)
158 struct rte_mempool *mp;
159 struct rte_pktmbuf_pool_private mbp_priv;
160 const char *mp_ops_name = ops_name;
164 if (RTE_ALIGN(priv_size, RTE_MBUF_PRIV_ALIGN) != priv_size) {
165 RTE_LOG(ERR, MBUF, "mbuf priv_size=%u is not aligned\n",
170 elt_size = sizeof(struct rte_mbuf) + (unsigned)priv_size +
171 (unsigned)data_room_size;
172 mbp_priv.mbuf_data_room_size = data_room_size;
173 mbp_priv.mbuf_priv_size = priv_size;
175 mp = rte_mempool_create_empty(name, n, elt_size, cache_size,
176 sizeof(struct rte_pktmbuf_pool_private), socket_id, 0);
180 if (mp_ops_name == NULL)
181 mp_ops_name = rte_mbuf_best_mempool_ops();
182 ret = rte_mempool_set_ops_byname(mp, mp_ops_name, NULL);
184 RTE_LOG(ERR, MBUF, "error setting mempool handler\n");
185 rte_mempool_free(mp);
189 rte_pktmbuf_pool_init(mp, &mbp_priv);
191 ret = rte_mempool_populate_default(mp);
193 rte_mempool_free(mp);
198 rte_mempool_obj_iter(mp, rte_pktmbuf_init, NULL);
203 /* helper to create a mbuf pool */
205 rte_pktmbuf_pool_create(const char *name, unsigned int n,
206 unsigned int cache_size, uint16_t priv_size, uint16_t data_room_size,
209 return rte_pktmbuf_pool_create_by_ops(name, n, cache_size, priv_size,
210 data_room_size, socket_id, NULL);
213 /* do some sanity checks on a mbuf: panic if it fails */
215 rte_mbuf_sanity_check(const struct rte_mbuf *m, int is_header)
217 unsigned int nb_segs, pkt_len;
220 rte_panic("mbuf is NULL\n");
224 rte_panic("bad mbuf pool\n");
225 if (m->buf_iova == 0)
226 rte_panic("bad IO addr\n");
227 if (m->buf_addr == NULL)
228 rte_panic("bad virt addr\n");
230 uint16_t cnt = rte_mbuf_refcnt_read(m);
231 if ((cnt == 0) || (cnt == UINT16_MAX))
232 rte_panic("bad ref cnt\n");
234 /* nothing to check for sub-segments */
238 /* data_len is supposed to be not more than pkt_len */
239 if (m->data_len > m->pkt_len)
240 rte_panic("bad data_len\n");
242 nb_segs = m->nb_segs;
243 pkt_len = m->pkt_len;
247 pkt_len -= m->data_len;
248 } while ((m = m->next) != NULL);
251 rte_panic("bad nb_segs\n");
253 rte_panic("bad pkt_len\n");
256 /* dump a mbuf on console */
258 rte_pktmbuf_dump(FILE *f, const struct rte_mbuf *m, unsigned dump_len)
261 unsigned int nb_segs;
263 __rte_mbuf_sanity_check(m, 1);
265 fprintf(f, "dump mbuf at %p, iova=%"PRIx64", buf_len=%u\n",
266 m, (uint64_t)m->buf_iova, (unsigned)m->buf_len);
267 fprintf(f, " pkt_len=%"PRIu32", ol_flags=%"PRIx64", nb_segs=%u, "
268 "in_port=%u\n", m->pkt_len, m->ol_flags,
269 (unsigned)m->nb_segs, (unsigned)m->port);
270 nb_segs = m->nb_segs;
272 while (m && nb_segs != 0) {
273 __rte_mbuf_sanity_check(m, 0);
275 fprintf(f, " segment at %p, data=%p, data_len=%u\n",
276 m, rte_pktmbuf_mtod(m, void *), (unsigned)m->data_len);
278 if (len > m->data_len)
281 rte_hexdump(f, NULL, rte_pktmbuf_mtod(m, void *), len);
288 /* read len data bytes in a mbuf at specified offset (internal) */
289 const void *__rte_pktmbuf_read(const struct rte_mbuf *m, uint32_t off,
290 uint32_t len, void *buf)
292 const struct rte_mbuf *seg = m;
293 uint32_t buf_off = 0, copy_len;
295 if (off + len > rte_pktmbuf_pkt_len(m))
298 while (off >= rte_pktmbuf_data_len(seg)) {
299 off -= rte_pktmbuf_data_len(seg);
303 if (off + len <= rte_pktmbuf_data_len(seg))
304 return rte_pktmbuf_mtod_offset(seg, char *, off);
306 /* rare case: header is split among several segments */
308 copy_len = rte_pktmbuf_data_len(seg) - off;
311 rte_memcpy((char *)buf + buf_off,
312 rte_pktmbuf_mtod_offset(seg, char *, off), copy_len);
323 * Get the name of a RX offload flag. Must be kept synchronized with flag
324 * definitions in rte_mbuf.h.
326 const char *rte_get_rx_ol_flag_name(uint64_t mask)
329 case PKT_RX_VLAN: return "PKT_RX_VLAN";
330 case PKT_RX_RSS_HASH: return "PKT_RX_RSS_HASH";
331 case PKT_RX_FDIR: return "PKT_RX_FDIR";
332 case PKT_RX_L4_CKSUM_BAD: return "PKT_RX_L4_CKSUM_BAD";
333 case PKT_RX_L4_CKSUM_GOOD: return "PKT_RX_L4_CKSUM_GOOD";
334 case PKT_RX_L4_CKSUM_NONE: return "PKT_RX_L4_CKSUM_NONE";
335 case PKT_RX_IP_CKSUM_BAD: return "PKT_RX_IP_CKSUM_BAD";
336 case PKT_RX_IP_CKSUM_GOOD: return "PKT_RX_IP_CKSUM_GOOD";
337 case PKT_RX_IP_CKSUM_NONE: return "PKT_RX_IP_CKSUM_NONE";
338 case PKT_RX_EIP_CKSUM_BAD: return "PKT_RX_EIP_CKSUM_BAD";
339 case PKT_RX_VLAN_STRIPPED: return "PKT_RX_VLAN_STRIPPED";
340 case PKT_RX_IEEE1588_PTP: return "PKT_RX_IEEE1588_PTP";
341 case PKT_RX_IEEE1588_TMST: return "PKT_RX_IEEE1588_TMST";
342 case PKT_RX_QINQ_STRIPPED: return "PKT_RX_QINQ_STRIPPED";
343 case PKT_RX_LRO: return "PKT_RX_LRO";
344 case PKT_RX_TIMESTAMP: return "PKT_RX_TIMESTAMP";
345 case PKT_RX_SEC_OFFLOAD: return "PKT_RX_SEC_OFFLOAD";
346 case PKT_RX_SEC_OFFLOAD_FAILED: return "PKT_RX_SEC_OFFLOAD_FAILED";
347 default: return NULL;
354 const char *default_name;
357 /* write the list of rx ol flags in buffer buf */
359 rte_get_rx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
361 const struct flag_mask rx_flags[] = {
362 { PKT_RX_VLAN, PKT_RX_VLAN, NULL },
363 { PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, NULL },
364 { PKT_RX_FDIR, PKT_RX_FDIR, NULL },
365 { PKT_RX_L4_CKSUM_BAD, PKT_RX_L4_CKSUM_MASK, NULL },
366 { PKT_RX_L4_CKSUM_GOOD, PKT_RX_L4_CKSUM_MASK, NULL },
367 { PKT_RX_L4_CKSUM_NONE, PKT_RX_L4_CKSUM_MASK, NULL },
368 { PKT_RX_L4_CKSUM_UNKNOWN, PKT_RX_L4_CKSUM_MASK,
369 "PKT_RX_L4_CKSUM_UNKNOWN" },
370 { PKT_RX_IP_CKSUM_BAD, PKT_RX_IP_CKSUM_MASK, NULL },
371 { PKT_RX_IP_CKSUM_GOOD, PKT_RX_IP_CKSUM_MASK, NULL },
372 { PKT_RX_IP_CKSUM_NONE, PKT_RX_IP_CKSUM_MASK, NULL },
373 { PKT_RX_IP_CKSUM_UNKNOWN, PKT_RX_IP_CKSUM_MASK,
374 "PKT_RX_IP_CKSUM_UNKNOWN" },
375 { PKT_RX_EIP_CKSUM_BAD, PKT_RX_EIP_CKSUM_BAD, NULL },
376 { PKT_RX_VLAN_STRIPPED, PKT_RX_VLAN_STRIPPED, NULL },
377 { PKT_RX_IEEE1588_PTP, PKT_RX_IEEE1588_PTP, NULL },
378 { PKT_RX_IEEE1588_TMST, PKT_RX_IEEE1588_TMST, NULL },
379 { PKT_RX_QINQ_STRIPPED, PKT_RX_QINQ_STRIPPED, NULL },
380 { PKT_RX_LRO, PKT_RX_LRO, NULL },
381 { PKT_RX_TIMESTAMP, PKT_RX_TIMESTAMP, NULL },
382 { PKT_RX_SEC_OFFLOAD, PKT_RX_SEC_OFFLOAD, NULL },
383 { PKT_RX_SEC_OFFLOAD_FAILED, PKT_RX_SEC_OFFLOAD_FAILED, NULL },
384 { PKT_RX_QINQ, PKT_RX_QINQ, NULL },
394 for (i = 0; i < RTE_DIM(rx_flags); i++) {
395 if ((mask & rx_flags[i].mask) != rx_flags[i].flag)
397 name = rte_get_rx_ol_flag_name(rx_flags[i].flag);
399 name = rx_flags[i].default_name;
400 ret = snprintf(buf, buflen, "%s ", name);
403 if ((size_t)ret >= buflen)
413 * Get the name of a TX offload flag. Must be kept synchronized with flag
414 * definitions in rte_mbuf.h.
416 const char *rte_get_tx_ol_flag_name(uint64_t mask)
419 case PKT_TX_VLAN_PKT: return "PKT_TX_VLAN_PKT";
420 case PKT_TX_IP_CKSUM: return "PKT_TX_IP_CKSUM";
421 case PKT_TX_TCP_CKSUM: return "PKT_TX_TCP_CKSUM";
422 case PKT_TX_SCTP_CKSUM: return "PKT_TX_SCTP_CKSUM";
423 case PKT_TX_UDP_CKSUM: return "PKT_TX_UDP_CKSUM";
424 case PKT_TX_IEEE1588_TMST: return "PKT_TX_IEEE1588_TMST";
425 case PKT_TX_TCP_SEG: return "PKT_TX_TCP_SEG";
426 case PKT_TX_IPV4: return "PKT_TX_IPV4";
427 case PKT_TX_IPV6: return "PKT_TX_IPV6";
428 case PKT_TX_OUTER_IP_CKSUM: return "PKT_TX_OUTER_IP_CKSUM";
429 case PKT_TX_OUTER_IPV4: return "PKT_TX_OUTER_IPV4";
430 case PKT_TX_OUTER_IPV6: return "PKT_TX_OUTER_IPV6";
431 case PKT_TX_TUNNEL_VXLAN: return "PKT_TX_TUNNEL_VXLAN";
432 case PKT_TX_TUNNEL_GRE: return "PKT_TX_TUNNEL_GRE";
433 case PKT_TX_TUNNEL_IPIP: return "PKT_TX_TUNNEL_IPIP";
434 case PKT_TX_TUNNEL_GENEVE: return "PKT_TX_TUNNEL_GENEVE";
435 case PKT_TX_TUNNEL_MPLSINUDP: return "PKT_TX_TUNNEL_MPLSINUDP";
436 case PKT_TX_MACSEC: return "PKT_TX_MACSEC";
437 case PKT_TX_SEC_OFFLOAD: return "PKT_TX_SEC_OFFLOAD";
438 default: return NULL;
442 /* write the list of tx ol flags in buffer buf */
444 rte_get_tx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
446 const struct flag_mask tx_flags[] = {
447 { PKT_TX_VLAN_PKT, PKT_TX_VLAN_PKT, NULL },
448 { PKT_TX_IP_CKSUM, PKT_TX_IP_CKSUM, NULL },
449 { PKT_TX_TCP_CKSUM, PKT_TX_L4_MASK, NULL },
450 { PKT_TX_SCTP_CKSUM, PKT_TX_L4_MASK, NULL },
451 { PKT_TX_UDP_CKSUM, PKT_TX_L4_MASK, NULL },
452 { PKT_TX_L4_NO_CKSUM, PKT_TX_L4_MASK, "PKT_TX_L4_NO_CKSUM" },
453 { PKT_TX_IEEE1588_TMST, PKT_TX_IEEE1588_TMST, NULL },
454 { PKT_TX_TCP_SEG, PKT_TX_TCP_SEG, NULL },
455 { PKT_TX_IPV4, PKT_TX_IPV4, NULL },
456 { PKT_TX_IPV6, PKT_TX_IPV6, NULL },
457 { PKT_TX_OUTER_IP_CKSUM, PKT_TX_OUTER_IP_CKSUM, NULL },
458 { PKT_TX_OUTER_IPV4, PKT_TX_OUTER_IPV4, NULL },
459 { PKT_TX_OUTER_IPV6, PKT_TX_OUTER_IPV6, NULL },
460 { PKT_TX_TUNNEL_VXLAN, PKT_TX_TUNNEL_MASK,
461 "PKT_TX_TUNNEL_NONE" },
462 { PKT_TX_TUNNEL_GRE, PKT_TX_TUNNEL_MASK,
463 "PKT_TX_TUNNEL_NONE" },
464 { PKT_TX_TUNNEL_IPIP, PKT_TX_TUNNEL_MASK,
465 "PKT_TX_TUNNEL_NONE" },
466 { PKT_TX_TUNNEL_GENEVE, PKT_TX_TUNNEL_MASK,
467 "PKT_TX_TUNNEL_NONE" },
468 { PKT_TX_TUNNEL_MPLSINUDP, PKT_TX_TUNNEL_MASK,
469 "PKT_TX_TUNNEL_NONE" },
470 { PKT_TX_MACSEC, PKT_TX_MACSEC, NULL },
471 { PKT_TX_SEC_OFFLOAD, PKT_TX_SEC_OFFLOAD, NULL },
481 for (i = 0; i < RTE_DIM(tx_flags); i++) {
482 if ((mask & tx_flags[i].mask) != tx_flags[i].flag)
484 name = rte_get_tx_ol_flag_name(tx_flags[i].flag);
486 name = tx_flags[i].default_name;
487 ret = snprintf(buf, buflen, "%s ", name);
490 if ((size_t)ret >= buflen)