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35 #include <rte_ether.h>
36 #include <rte_ip_frag.h>
37 #include <rte_memory.h>
39 #include "rte_port_frag.h"
41 /* Max number of fragments per packet allowed */
42 #define RTE_PORT_FRAG_MAX_FRAGS_PER_PACKET 0x80
44 #ifdef RTE_PORT_STATS_COLLECT
46 #define RTE_PORT_RING_READER_FRAG_STATS_PKTS_IN_ADD(port, val) \
47 port->stats.n_pkts_in += val
48 #define RTE_PORT_RING_READER_FRAG_STATS_PKTS_DROP_ADD(port, val) \
49 port->stats.n_pkts_drop += val
53 #define RTE_PORT_RING_READER_FRAG_STATS_PKTS_IN_ADD(port, val)
54 #define RTE_PORT_RING_READER_FRAG_STATS_PKTS_DROP_ADD(port, val)
59 (*frag_op)(struct rte_mbuf *pkt_in,
60 struct rte_mbuf **pkts_out,
63 struct rte_mempool *pool_direct,
64 struct rte_mempool *pool_indirect);
66 struct rte_port_ring_reader_frag {
67 struct rte_port_in_stats stats;
69 /* Input parameters */
70 struct rte_ring *ring;
72 uint32_t metadata_size;
73 struct rte_mempool *pool_direct;
74 struct rte_mempool *pool_indirect;
76 /* Internal buffers */
77 struct rte_mbuf *pkts[RTE_PORT_IN_BURST_SIZE_MAX];
78 struct rte_mbuf *frags[RTE_PORT_FRAG_MAX_FRAGS_PER_PACKET];
85 } __rte_cache_aligned;
88 rte_port_ring_reader_frag_create(void *params, int socket_id, int is_ipv4)
90 struct rte_port_ring_reader_frag_params *conf =
91 (struct rte_port_ring_reader_frag_params *) params;
92 struct rte_port_ring_reader_frag *port;
94 /* Check input parameters */
96 RTE_LOG(ERR, PORT, "%s: Parameter conf is NULL\n", __func__);
99 if (conf->ring == NULL) {
100 RTE_LOG(ERR, PORT, "%s: Parameter ring is NULL\n", __func__);
103 if (conf->mtu == 0) {
104 RTE_LOG(ERR, PORT, "%s: Parameter mtu is invalid\n", __func__);
107 if (conf->pool_direct == NULL) {
108 RTE_LOG(ERR, PORT, "%s: Parameter pool_direct is NULL\n",
112 if (conf->pool_indirect == NULL) {
113 RTE_LOG(ERR, PORT, "%s: Parameter pool_indirect is NULL\n",
118 /* Memory allocation */
119 port = rte_zmalloc_socket("PORT", sizeof(*port), RTE_CACHE_LINE_SIZE,
122 RTE_LOG(ERR, PORT, "%s: port is NULL\n", __func__);
127 port->ring = conf->ring;
128 port->mtu = conf->mtu;
129 port->metadata_size = conf->metadata_size;
130 port->pool_direct = conf->pool_direct;
131 port->pool_indirect = conf->pool_indirect;
138 port->f_frag = (is_ipv4) ?
139 rte_ipv4_fragment_packet : rte_ipv6_fragment_packet;
145 rte_port_ring_reader_ipv4_frag_create(void *params, int socket_id)
147 return rte_port_ring_reader_frag_create(params, socket_id, 1);
151 rte_port_ring_reader_ipv6_frag_create(void *params, int socket_id)
153 return rte_port_ring_reader_frag_create(params, socket_id, 0);
157 rte_port_ring_reader_frag_rx(void *port,
158 struct rte_mbuf **pkts,
161 struct rte_port_ring_reader_frag *p =
162 (struct rte_port_ring_reader_frag *) port;
167 /* Get packets from the "frag" buffer */
168 if (p->n_frags >= n_pkts) {
169 memcpy(pkts, &p->frags[p->pos_frags], n_pkts * sizeof(void *));
170 p->pos_frags += n_pkts;
171 p->n_frags -= n_pkts;
176 memcpy(pkts, &p->frags[p->pos_frags], p->n_frags * sizeof(void *));
177 n_pkts_out = p->n_frags;
180 /* Look to "pkts" buffer to get more packets */
182 struct rte_mbuf *pkt;
183 uint32_t n_pkts_to_provide, i;
186 /* If "pkts" buffer is empty, read packet burst from ring */
187 if (p->n_pkts == 0) {
188 p->n_pkts = rte_ring_sc_dequeue_burst(p->ring,
189 (void **) p->pkts, RTE_PORT_IN_BURST_SIZE_MAX);
190 RTE_PORT_RING_READER_FRAG_STATS_PKTS_IN_ADD(p, p->n_pkts);
196 /* Read next packet from "pkts" buffer */
197 pkt = p->pkts[p->pos_pkts++];
200 /* If not jumbo, pass current packet to output */
201 if (pkt->pkt_len <= p->mtu) {
202 pkts[n_pkts_out++] = pkt;
204 n_pkts_to_provide = n_pkts - n_pkts_out;
205 if (n_pkts_to_provide == 0)
211 /* Fragment current packet into the "frags" buffer */
215 RTE_PORT_FRAG_MAX_FRAGS_PER_PACKET,
222 rte_pktmbuf_free(pkt);
223 RTE_PORT_RING_READER_FRAG_STATS_PKTS_DROP_ADD(p, 1);
227 p->n_frags = (uint32_t) status;
230 /* Copy meta-data from input jumbo packet to its fragments */
231 for (i = 0; i < p->n_frags; i++) {
233 RTE_MBUF_METADATA_UINT8_PTR(pkt, sizeof(struct rte_mbuf));
235 RTE_MBUF_METADATA_UINT8_PTR(p->frags[i], sizeof(struct rte_mbuf));
237 memcpy(dst, src, p->metadata_size);
240 /* Free input jumbo packet */
241 rte_pktmbuf_free(pkt);
243 /* Get packets from "frag" buffer */
244 n_pkts_to_provide = n_pkts - n_pkts_out;
245 if (p->n_frags >= n_pkts_to_provide) {
246 memcpy(&pkts[n_pkts_out], p->frags,
247 n_pkts_to_provide * sizeof(void *));
248 p->n_frags -= n_pkts_to_provide;
249 p->pos_frags += n_pkts_to_provide;
254 memcpy(&pkts[n_pkts_out], p->frags,
255 p->n_frags * sizeof(void *));
256 n_pkts_out += p->n_frags;
262 rte_port_ring_reader_frag_free(void *port)
265 RTE_LOG(ERR, PORT, "%s: Parameter port is NULL\n", __func__);
275 rte_port_frag_reader_stats_read(void *port,
276 struct rte_port_in_stats *stats, int clear)
278 struct rte_port_ring_reader_frag *p =
279 (struct rte_port_ring_reader_frag *) port;
282 memcpy(stats, &p->stats, sizeof(p->stats));
285 memset(&p->stats, 0, sizeof(p->stats));
291 * Summary of port operations
293 struct rte_port_in_ops rte_port_ring_reader_ipv4_frag_ops = {
294 .f_create = rte_port_ring_reader_ipv4_frag_create,
295 .f_free = rte_port_ring_reader_frag_free,
296 .f_rx = rte_port_ring_reader_frag_rx,
297 .f_stats = rte_port_frag_reader_stats_read,
300 struct rte_port_in_ops rte_port_ring_reader_ipv6_frag_ops = {
301 .f_create = rte_port_ring_reader_ipv6_frag_create,
302 .f_free = rte_port_ring_reader_frag_free,
303 .f_rx = rte_port_ring_reader_frag_rx,
304 .f_stats = rte_port_frag_reader_stats_read,