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5 * Copyright 2014 6WIND S.A.
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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>
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 *user_mbp_priv, *mbp_priv;
85 struct rte_pktmbuf_pool_private default_mbp_priv;
88 RTE_MBUF_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf));
90 /* if no structure is provided, assume no mbuf private area */
91 user_mbp_priv = opaque_arg;
92 if (user_mbp_priv == NULL) {
93 default_mbp_priv.mbuf_priv_size = 0;
94 if (mp->elt_size > sizeof(struct rte_mbuf))
95 roomsz = mp->elt_size - sizeof(struct rte_mbuf);
98 default_mbp_priv.mbuf_data_room_size = roomsz;
99 user_mbp_priv = &default_mbp_priv;
102 RTE_MBUF_ASSERT(mp->elt_size >= sizeof(struct rte_mbuf) +
103 user_mbp_priv->mbuf_data_room_size +
104 user_mbp_priv->mbuf_priv_size);
106 mbp_priv = rte_mempool_get_priv(mp);
107 memcpy(mbp_priv, user_mbp_priv, sizeof(*mbp_priv));
111 * pktmbuf constructor, given as a callback function to
112 * rte_mempool_create().
113 * Set the fields of a packet mbuf to their default values.
116 rte_pktmbuf_init(struct rte_mempool *mp,
117 __attribute__((unused)) void *opaque_arg,
119 __attribute__((unused)) unsigned i)
121 struct rte_mbuf *m = _m;
122 uint32_t mbuf_size, buf_len, priv_size;
124 priv_size = rte_pktmbuf_priv_size(mp);
125 mbuf_size = sizeof(struct rte_mbuf) + priv_size;
126 buf_len = rte_pktmbuf_data_room_size(mp);
128 RTE_MBUF_ASSERT(mp->elt_size >= mbuf_size);
129 RTE_MBUF_ASSERT(buf_len <= UINT16_MAX);
131 memset(m, 0, mp->elt_size);
133 /* start of buffer is after mbuf structure and priv data */
134 m->priv_size = priv_size;
135 m->buf_addr = (char *)m + mbuf_size;
136 m->buf_physaddr = rte_mempool_virt2phy(mp, m) + mbuf_size;
137 m->buf_len = (uint16_t)buf_len;
139 /* keep some headroom between start of buffer and data */
140 m->data_off = RTE_MIN(RTE_PKTMBUF_HEADROOM, (uint16_t)m->buf_len);
142 /* init some constant fields */
148 /* helper to create a mbuf pool */
150 rte_pktmbuf_pool_create(const char *name, unsigned n,
151 unsigned cache_size, uint16_t priv_size, uint16_t data_room_size,
154 struct rte_pktmbuf_pool_private mbp_priv;
158 elt_size = sizeof(struct rte_mbuf) + (unsigned)priv_size +
159 (unsigned)data_room_size;
160 mbp_priv.mbuf_data_room_size = data_room_size;
161 mbp_priv.mbuf_priv_size = priv_size;
163 return rte_mempool_create(name, n, elt_size,
164 cache_size, sizeof(struct rte_pktmbuf_pool_private),
165 rte_pktmbuf_pool_init, &mbp_priv, rte_pktmbuf_init, NULL,
169 /* do some sanity checks on a mbuf: panic if it fails */
171 rte_mbuf_sanity_check(const struct rte_mbuf *m, int is_header)
173 const struct rte_mbuf *m_seg;
177 rte_panic("mbuf is NULL\n");
181 rte_panic("bad mbuf pool\n");
182 if (m->buf_physaddr == 0)
183 rte_panic("bad phys addr\n");
184 if (m->buf_addr == NULL)
185 rte_panic("bad virt addr\n");
187 uint16_t cnt = rte_mbuf_refcnt_read(m);
188 if ((cnt == 0) || (cnt == UINT16_MAX))
189 rte_panic("bad ref cnt\n");
191 /* nothing to check for sub-segments */
195 nb_segs = m->nb_segs;
197 while (m_seg && nb_segs != 0) {
202 rte_panic("bad nb_segs\n");
205 /* dump a mbuf on console */
207 rte_pktmbuf_dump(FILE *f, const struct rte_mbuf *m, unsigned dump_len)
212 __rte_mbuf_sanity_check(m, 1);
214 fprintf(f, "dump mbuf at 0x%p, phys=%"PRIx64", buf_len=%u\n",
215 m, (uint64_t)m->buf_physaddr, (unsigned)m->buf_len);
216 fprintf(f, " pkt_len=%"PRIu32", ol_flags=%"PRIx64", nb_segs=%u, "
217 "in_port=%u\n", m->pkt_len, m->ol_flags,
218 (unsigned)m->nb_segs, (unsigned)m->port);
219 nb_segs = m->nb_segs;
221 while (m && nb_segs != 0) {
222 __rte_mbuf_sanity_check(m, 0);
224 fprintf(f, " segment at 0x%p, data=0x%p, data_len=%u\n",
225 m, rte_pktmbuf_mtod(m, void *), (unsigned)m->data_len);
227 if (len > m->data_len)
230 rte_hexdump(f, NULL, rte_pktmbuf_mtod(m, void *), len);
238 * Get the name of a RX offload flag. Must be kept synchronized with flag
239 * definitions in rte_mbuf.h.
241 const char *rte_get_rx_ol_flag_name(uint64_t mask)
244 case PKT_RX_VLAN_PKT: return "PKT_RX_VLAN_PKT";
245 case PKT_RX_RSS_HASH: return "PKT_RX_RSS_HASH";
246 case PKT_RX_FDIR: return "PKT_RX_FDIR";
247 case PKT_RX_L4_CKSUM_BAD: return "PKT_RX_L4_CKSUM_BAD";
248 case PKT_RX_IP_CKSUM_BAD: return "PKT_RX_IP_CKSUM_BAD";
249 /* case PKT_RX_EIP_CKSUM_BAD: return "PKT_RX_EIP_CKSUM_BAD"; */
250 /* case PKT_RX_OVERSIZE: return "PKT_RX_OVERSIZE"; */
251 /* case PKT_RX_HBUF_OVERFLOW: return "PKT_RX_HBUF_OVERFLOW"; */
252 /* case PKT_RX_RECIP_ERR: return "PKT_RX_RECIP_ERR"; */
253 /* case PKT_RX_MAC_ERR: return "PKT_RX_MAC_ERR"; */
254 case PKT_RX_IPV4_HDR: return "PKT_RX_IPV4_HDR";
255 case PKT_RX_IPV4_HDR_EXT: return "PKT_RX_IPV4_HDR_EXT";
256 case PKT_RX_IPV6_HDR: return "PKT_RX_IPV6_HDR";
257 case PKT_RX_IPV6_HDR_EXT: return "PKT_RX_IPV6_HDR_EXT";
258 case PKT_RX_IEEE1588_PTP: return "PKT_RX_IEEE1588_PTP";
259 case PKT_RX_IEEE1588_TMST: return "PKT_RX_IEEE1588_TMST";
260 case PKT_RX_TUNNEL_IPV4_HDR: return "PKT_RX_TUNNEL_IPV4_HDR";
261 case PKT_RX_TUNNEL_IPV6_HDR: return "PKT_RX_TUNNEL_IPV6_HDR";
262 default: return NULL;
267 * Get the name of a TX offload flag. Must be kept synchronized with flag
268 * definitions in rte_mbuf.h.
270 const char *rte_get_tx_ol_flag_name(uint64_t mask)
273 case PKT_TX_VLAN_PKT: return "PKT_TX_VLAN_PKT";
274 case PKT_TX_IP_CKSUM: return "PKT_TX_IP_CKSUM";
275 case PKT_TX_TCP_CKSUM: return "PKT_TX_TCP_CKSUM";
276 case PKT_TX_SCTP_CKSUM: return "PKT_TX_SCTP_CKSUM";
277 case PKT_TX_UDP_CKSUM: return "PKT_TX_UDP_CKSUM";
278 case PKT_TX_IEEE1588_TMST: return "PKT_TX_IEEE1588_TMST";
279 case PKT_TX_TCP_SEG: return "PKT_TX_TCP_SEG";
280 case PKT_TX_IPV4: return "PKT_TX_IPV4";
281 case PKT_TX_IPV6: return "PKT_TX_IPV6";
282 case PKT_TX_OUTER_IP_CKSUM: return "PKT_TX_OUTER_IP_CKSUM";
283 case PKT_TX_OUTER_IPV4: return "PKT_TX_OUTER_IPV4";
284 case PKT_TX_OUTER_IPV6: return "PKT_TX_OUTER_IPV6";
285 default: return NULL;