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35 #include <rte_ether.h>
36 #include <rte_ip_frag.h>
37 #include <rte_cycles.h>
40 #include "rte_port_ras.h"
42 #ifndef RTE_PORT_RAS_N_BUCKETS
43 #define RTE_PORT_RAS_N_BUCKETS 4094
46 #ifndef RTE_PORT_RAS_N_ENTRIES_PER_BUCKET
47 #define RTE_PORT_RAS_N_ENTRIES_PER_BUCKET 8
50 #ifndef RTE_PORT_RAS_N_ENTRIES
51 #define RTE_PORT_RAS_N_ENTRIES (RTE_PORT_RAS_N_BUCKETS * RTE_PORT_RAS_N_ENTRIES_PER_BUCKET)
54 #ifdef RTE_PORT_STATS_COLLECT
56 #define RTE_PORT_RING_WRITER_RAS_STATS_PKTS_IN_ADD(port, val) \
57 port->stats.n_pkts_in += val
58 #define RTE_PORT_RING_WRITER_RAS_STATS_PKTS_DROP_ADD(port, val) \
59 port->stats.n_pkts_drop += val
63 #define RTE_PORT_RING_WRITER_RAS_STATS_PKTS_IN_ADD(port, val)
64 #define RTE_PORT_RING_WRITER_RAS_STATS_PKTS_DROP_ADD(port, val)
68 struct rte_port_ring_writer_ras;
70 typedef void (*ras_op)(
71 struct rte_port_ring_writer_ras *p,
72 struct rte_mbuf *pkt);
75 process_ipv4(struct rte_port_ring_writer_ras *p, struct rte_mbuf *pkt);
77 process_ipv6(struct rte_port_ring_writer_ras *p, struct rte_mbuf *pkt);
79 struct rte_port_ring_writer_ras {
80 struct rte_port_out_stats stats;
82 struct rte_mbuf *tx_buf[RTE_PORT_IN_BURST_SIZE_MAX];
83 struct rte_ring *ring;
85 uint32_t tx_buf_count;
86 struct rte_ip_frag_tbl *frag_tbl;
87 struct rte_ip_frag_death_row death_row;
93 rte_port_ring_writer_ras_create(void *params, int socket_id, int is_ipv4)
95 struct rte_port_ring_writer_ras_params *conf =
96 (struct rte_port_ring_writer_ras_params *) params;
97 struct rte_port_ring_writer_ras *port;
100 /* Check input parameters */
102 RTE_LOG(ERR, PORT, "%s: Parameter conf is NULL\n", __func__);
105 if (conf->ring == NULL) {
106 RTE_LOG(ERR, PORT, "%s: Parameter ring is NULL\n", __func__);
109 if ((conf->tx_burst_sz == 0) ||
110 (conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX)) {
111 RTE_LOG(ERR, PORT, "%s: Parameter tx_burst_sz is invalid\n",
116 /* Memory allocation */
117 port = rte_zmalloc_socket("PORT", sizeof(*port),
118 RTE_CACHE_LINE_SIZE, socket_id);
120 RTE_LOG(ERR, PORT, "%s: Failed to allocate socket\n", __func__);
124 /* Create fragmentation table */
125 frag_cycles = (rte_get_tsc_hz() + MS_PER_S - 1) / MS_PER_S * MS_PER_S;
128 port->frag_tbl = rte_ip_frag_table_create(
129 RTE_PORT_RAS_N_BUCKETS,
130 RTE_PORT_RAS_N_ENTRIES_PER_BUCKET,
131 RTE_PORT_RAS_N_ENTRIES,
135 if (port->frag_tbl == NULL) {
136 RTE_LOG(ERR, PORT, "%s: rte_ip_frag_table_create failed\n",
143 port->ring = conf->ring;
144 port->tx_burst_sz = conf->tx_burst_sz;
145 port->tx_buf_count = 0;
147 port->f_ras = (is_ipv4 == 0) ? process_ipv4 : process_ipv6;
153 rte_port_ring_writer_ipv4_ras_create(void *params, int socket_id)
155 return rte_port_ring_writer_ras_create(params, socket_id, 1);
159 rte_port_ring_writer_ipv6_ras_create(void *params, int socket_id)
161 return rte_port_ring_writer_ras_create(params, socket_id, 0);
165 send_burst(struct rte_port_ring_writer_ras *p)
169 nb_tx = rte_ring_sp_enqueue_burst(p->ring, (void **)p->tx_buf,
172 RTE_PORT_RING_WRITER_RAS_STATS_PKTS_DROP_ADD(p, p->tx_buf_count - nb_tx);
173 for ( ; nb_tx < p->tx_buf_count; nb_tx++)
174 rte_pktmbuf_free(p->tx_buf[nb_tx]);
180 process_ipv4(struct rte_port_ring_writer_ras *p, struct rte_mbuf *pkt)
182 /* Assume there is no ethernet header */
183 struct ipv4_hdr *pkt_hdr = (struct ipv4_hdr *)
184 (rte_pktmbuf_mtod(pkt, unsigned char *));
186 /* Get "Do not fragment" flag and fragment offset */
187 uint16_t frag_field = rte_be_to_cpu_16(pkt_hdr->fragment_offset);
188 uint16_t frag_offset = (uint16_t)(frag_field & IPV4_HDR_OFFSET_MASK);
189 uint16_t frag_flag = (uint16_t)(frag_field & IPV4_HDR_MF_FLAG);
191 /* If it is a fragmented packet, then try to reassemble */
192 if ((frag_flag == 0) && (frag_offset == 0))
193 p->tx_buf[p->tx_buf_count++] = pkt;
196 struct rte_ip_frag_tbl *tbl = p->frag_tbl;
197 struct rte_ip_frag_death_row *dr = &p->death_row;
199 /* Process this fragment */
200 mo = rte_ipv4_frag_reassemble_packet(tbl, dr, pkt, rte_rdtsc(),
203 p->tx_buf[p->tx_buf_count++] = mo;
205 rte_ip_frag_free_death_row(&p->death_row, 3);
210 process_ipv6(struct rte_port_ring_writer_ras *p, struct rte_mbuf *pkt)
212 /* Assume there is no ethernet header */
213 struct ipv6_hdr *pkt_hdr = (struct ipv6_hdr *)
214 (rte_pktmbuf_mtod(pkt, unsigned char *));
216 struct ipv6_extension_fragment *frag_hdr;
217 frag_hdr = rte_ipv6_frag_get_ipv6_fragment_header(pkt_hdr);
218 uint16_t frag_offset = frag_hdr->frag_offset;
219 uint16_t frag_flag = frag_hdr->more_frags;
221 /* If it is a fragmented packet, then try to reassemble */
222 if ((frag_flag == 0) && (frag_offset == 0))
223 p->tx_buf[p->tx_buf_count++] = pkt;
226 struct rte_ip_frag_tbl *tbl = p->frag_tbl;
227 struct rte_ip_frag_death_row *dr = &p->death_row;
229 /* Process this fragment */
230 mo = rte_ipv6_frag_reassemble_packet(tbl, dr, pkt, rte_rdtsc(), pkt_hdr,
233 p->tx_buf[p->tx_buf_count++] = mo;
235 rte_ip_frag_free_death_row(&p->death_row, 3);
240 rte_port_ring_writer_ras_tx(void *port, struct rte_mbuf *pkt)
242 struct rte_port_ring_writer_ras *p =
243 (struct rte_port_ring_writer_ras *) port;
245 RTE_PORT_RING_WRITER_RAS_STATS_PKTS_IN_ADD(p, 1);
247 if (p->tx_buf_count >= p->tx_burst_sz)
254 rte_port_ring_writer_ras_tx_bulk(void *port,
255 struct rte_mbuf **pkts,
258 struct rte_port_ring_writer_ras *p =
259 (struct rte_port_ring_writer_ras *) port;
261 if ((pkts_mask & (pkts_mask + 1)) == 0) {
262 uint64_t n_pkts = __builtin_popcountll(pkts_mask);
265 for (i = 0; i < n_pkts; i++) {
266 struct rte_mbuf *pkt = pkts[i];
268 RTE_PORT_RING_WRITER_RAS_STATS_PKTS_IN_ADD(p, 1);
270 if (p->tx_buf_count >= p->tx_burst_sz)
274 for ( ; pkts_mask; ) {
275 uint32_t pkt_index = __builtin_ctzll(pkts_mask);
276 uint64_t pkt_mask = 1LLU << pkt_index;
277 struct rte_mbuf *pkt = pkts[pkt_index];
279 RTE_PORT_RING_WRITER_RAS_STATS_PKTS_IN_ADD(p, 1);
281 if (p->tx_buf_count >= p->tx_burst_sz)
284 pkts_mask &= ~pkt_mask;
292 rte_port_ring_writer_ras_flush(void *port)
294 struct rte_port_ring_writer_ras *p =
295 (struct rte_port_ring_writer_ras *) port;
297 if (p->tx_buf_count > 0)
304 rte_port_ring_writer_ras_free(void *port)
306 struct rte_port_ring_writer_ras *p =
307 (struct rte_port_ring_writer_ras *) port;
310 RTE_LOG(ERR, PORT, "%s: Parameter port is NULL\n", __func__);
314 rte_port_ring_writer_ras_flush(port);
315 rte_ip_frag_table_destroy(p->frag_tbl);
322 rte_port_ras_writer_stats_read(void *port,
323 struct rte_port_out_stats *stats, int clear)
325 struct rte_port_ring_writer_ras *p =
326 (struct rte_port_ring_writer_ras *) port;
329 memcpy(stats, &p->stats, sizeof(p->stats));
332 memset(&p->stats, 0, sizeof(p->stats));
338 * Summary of port operations
340 struct rte_port_out_ops rte_port_ring_writer_ipv4_ras_ops = {
341 .f_create = rte_port_ring_writer_ipv4_ras_create,
342 .f_free = rte_port_ring_writer_ras_free,
343 .f_tx = rte_port_ring_writer_ras_tx,
344 .f_tx_bulk = rte_port_ring_writer_ras_tx_bulk,
345 .f_flush = rte_port_ring_writer_ras_flush,
346 .f_stats = rte_port_ras_writer_stats_read,
349 struct rte_port_out_ops rte_port_ring_writer_ipv6_ras_ops = {
350 .f_create = rte_port_ring_writer_ipv6_ras_create,
351 .f_free = rte_port_ring_writer_ras_free,
352 .f_tx = rte_port_ring_writer_ras_tx,
353 .f_tx_bulk = rte_port_ring_writer_ras_tx_bulk,
354 .f_flush = rte_port_ring_writer_ras_flush,
355 .f_stats = rte_port_ras_writer_stats_read,