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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 IPV4_MAX_FRAGS_PER_PACKET 0x80
44 struct rte_port_ring_reader_ipv4_frag {
45 /* Input parameters */
46 struct rte_ring *ring;
48 uint32_t metadata_size;
49 struct rte_mempool *pool_direct;
50 struct rte_mempool *pool_indirect;
52 /* Internal buffers */
53 struct rte_mbuf *pkts[RTE_PORT_IN_BURST_SIZE_MAX];
54 struct rte_mbuf *frags[IPV4_MAX_FRAGS_PER_PACKET];
59 } __rte_cache_aligned;
62 rte_port_ring_reader_ipv4_frag_create(void *params, int socket_id)
64 struct rte_port_ring_reader_ipv4_frag_params *conf =
65 (struct rte_port_ring_reader_ipv4_frag_params *) params;
66 struct rte_port_ring_reader_ipv4_frag *port;
68 /* Check input parameters */
70 RTE_LOG(ERR, PORT, "%s: Parameter conf is NULL\n", __func__);
73 if (conf->ring == NULL) {
74 RTE_LOG(ERR, PORT, "%s: Parameter ring is NULL\n", __func__);
78 RTE_LOG(ERR, PORT, "%s: Parameter mtu is invalid\n", __func__);
81 if (conf->pool_direct == NULL) {
82 RTE_LOG(ERR, PORT, "%s: Parameter pool_direct is NULL\n",
86 if (conf->pool_indirect == NULL) {
87 RTE_LOG(ERR, PORT, "%s: Parameter pool_indirect is NULL\n",
92 /* Memory allocation */
93 port = rte_zmalloc_socket("PORT", sizeof(*port), RTE_CACHE_LINE_SIZE,
96 RTE_LOG(ERR, PORT, "%s: port is NULL\n", __func__);
101 port->ring = conf->ring;
102 port->mtu = conf->mtu;
103 port->metadata_size = conf->metadata_size;
104 port->pool_direct = conf->pool_direct;
105 port->pool_indirect = conf->pool_indirect;
116 rte_port_ring_reader_ipv4_frag_rx(void *port,
117 struct rte_mbuf **pkts,
120 struct rte_port_ring_reader_ipv4_frag *p =
121 (struct rte_port_ring_reader_ipv4_frag *) port;
126 /* Get packets from the "frag" buffer */
127 if (p->n_frags >= n_pkts) {
128 memcpy(pkts, &p->frags[p->pos_frags], n_pkts * sizeof(void *));
129 p->pos_frags += n_pkts;
130 p->n_frags -= n_pkts;
135 memcpy(pkts, &p->frags[p->pos_frags], p->n_frags * sizeof(void *));
136 n_pkts_out = p->n_frags;
139 /* Look to "pkts" buffer to get more packets */
141 struct rte_mbuf *pkt;
142 uint32_t n_pkts_to_provide, i;
145 /* If "pkts" buffer is empty, read packet burst from ring */
146 if (p->n_pkts == 0) {
147 p->n_pkts = rte_ring_sc_dequeue_burst(p->ring,
148 (void **) p->pkts, RTE_PORT_IN_BURST_SIZE_MAX);
154 /* Read next packet from "pkts" buffer */
155 pkt = p->pkts[p->pos_pkts++];
158 /* If not jumbo, pass current packet to output */
159 if (pkt->pkt_len <= p->mtu) {
160 pkts[n_pkts_out++] = pkt;
162 n_pkts_to_provide = n_pkts - n_pkts_out;
163 if (n_pkts_to_provide == 0)
169 /* Fragment current packet into the "frags" buffer */
170 status = rte_ipv4_fragment_packet(
173 IPV4_MAX_FRAGS_PER_PACKET,
180 rte_pktmbuf_free(pkt);
184 p->n_frags = (uint32_t) status;
187 /* Copy meta-data from input jumbo packet to its fragments */
188 for (i = 0; i < p->n_frags; i++) {
189 uint8_t *src = RTE_MBUF_METADATA_UINT8_PTR(pkt, 0);
191 RTE_MBUF_METADATA_UINT8_PTR(p->frags[i], 0);
193 memcpy(dst, src, p->metadata_size);
196 /* Free input jumbo packet */
197 rte_pktmbuf_free(pkt);
199 /* Get packets from "frag" buffer */
200 n_pkts_to_provide = n_pkts - n_pkts_out;
201 if (p->n_frags >= n_pkts_to_provide) {
202 memcpy(&pkts[n_pkts_out], p->frags,
203 n_pkts_to_provide * sizeof(void *));
204 p->n_frags -= n_pkts_to_provide;
205 p->pos_frags += n_pkts_to_provide;
210 memcpy(&pkts[n_pkts_out], p->frags,
211 p->n_frags * sizeof(void *));
212 n_pkts_out += p->n_frags;
218 rte_port_ring_reader_ipv4_frag_free(void *port)
221 RTE_LOG(ERR, PORT, "%s: Parameter port is NULL\n", __func__);
231 * Summary of port operations
233 struct rte_port_in_ops rte_port_ring_reader_ipv4_frag_ops = {
234 .f_create = rte_port_ring_reader_ipv4_frag_create,
235 .f_free = rte_port_ring_reader_ipv4_frag_free,
236 .f_rx = rte_port_ring_reader_ipv4_frag_rx,