1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016 Intel Corporation
9 #include <rte_malloc.h>
11 #include "rte_port_fd.h"
16 #ifdef RTE_PORT_STATS_COLLECT
18 #define RTE_PORT_FD_READER_STATS_PKTS_IN_ADD(port, val) \
19 do { port->stats.n_pkts_in += val; } while (0)
20 #define RTE_PORT_FD_READER_STATS_PKTS_DROP_ADD(port, val) \
21 do { port->stats.n_pkts_drop += val; } while (0)
25 #define RTE_PORT_FD_READER_STATS_PKTS_IN_ADD(port, val)
26 #define RTE_PORT_FD_READER_STATS_PKTS_DROP_ADD(port, val)
30 struct rte_port_fd_reader {
31 struct rte_port_in_stats stats;
34 struct rte_mempool *mempool;
38 rte_port_fd_reader_create(void *params, int socket_id)
40 struct rte_port_fd_reader_params *conf =
42 struct rte_port_fd_reader *port;
44 /* Check input parameters */
46 RTE_LOG(ERR, PORT, "%s: params is NULL\n", __func__);
50 RTE_LOG(ERR, PORT, "%s: Invalid file descriptor\n", __func__);
54 RTE_LOG(ERR, PORT, "%s: Invalid MTU\n", __func__);
57 if (conf->mempool == NULL) {
58 RTE_LOG(ERR, PORT, "%s: Invalid mempool\n", __func__);
62 /* Memory allocation */
63 port = rte_zmalloc_socket("PORT", sizeof(*port),
64 RTE_CACHE_LINE_SIZE, socket_id);
66 RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
72 port->mtu = conf->mtu;
73 port->mempool = conf->mempool;
79 rte_port_fd_reader_rx(void *port, struct rte_mbuf **pkts, uint32_t n_pkts)
81 struct rte_port_fd_reader *p = port;
84 if (rte_pktmbuf_alloc_bulk(p->mempool, pkts, n_pkts) != 0)
87 for (i = 0; i < n_pkts; i++) {
88 struct rte_mbuf *pkt = pkts[i];
89 void *pkt_data = rte_pktmbuf_mtod(pkt, void *);
92 n_bytes = read(p->fd, pkt_data, (size_t) p->mtu);
96 pkt->data_len = n_bytes;
97 pkt->pkt_len = n_bytes;
100 for (j = i; j < n_pkts; j++)
101 rte_pktmbuf_free(pkts[j]);
103 RTE_PORT_FD_READER_STATS_PKTS_IN_ADD(p, i);
109 rte_port_fd_reader_free(void *port)
112 RTE_LOG(ERR, PORT, "%s: port is NULL\n", __func__);
121 static int rte_port_fd_reader_stats_read(void *port,
122 struct rte_port_in_stats *stats, int clear)
124 struct rte_port_fd_reader *p =
128 memcpy(stats, &p->stats, sizeof(p->stats));
131 memset(&p->stats, 0, sizeof(p->stats));
139 #ifdef RTE_PORT_STATS_COLLECT
141 #define RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(port, val) \
142 do { port->stats.n_pkts_in += val; } while (0)
143 #define RTE_PORT_FD_WRITER_STATS_PKTS_DROP_ADD(port, val) \
144 do { port->stats.n_pkts_drop += val; } while (0)
148 #define RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(port, val)
149 #define RTE_PORT_FD_WRITER_STATS_PKTS_DROP_ADD(port, val)
153 struct rte_port_fd_writer {
154 struct rte_port_out_stats stats;
156 struct rte_mbuf *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
157 uint32_t tx_burst_sz;
158 uint16_t tx_buf_count;
163 rte_port_fd_writer_create(void *params, int socket_id)
165 struct rte_port_fd_writer_params *conf =
167 struct rte_port_fd_writer *port;
169 /* Check input parameters */
170 if ((conf == NULL) ||
171 (conf->tx_burst_sz == 0) ||
172 (conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX) ||
173 (!rte_is_power_of_2(conf->tx_burst_sz))) {
174 RTE_LOG(ERR, PORT, "%s: Invalid input parameters\n", __func__);
178 /* Memory allocation */
179 port = rte_zmalloc_socket("PORT", sizeof(*port),
180 RTE_CACHE_LINE_SIZE, socket_id);
182 RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
188 port->tx_burst_sz = conf->tx_burst_sz;
189 port->tx_buf_count = 0;
195 send_burst(struct rte_port_fd_writer *p)
199 for (i = 0; i < p->tx_buf_count; i++) {
200 struct rte_mbuf *pkt = p->tx_buf[i];
201 void *pkt_data = rte_pktmbuf_mtod(pkt, void*);
202 size_t n_bytes = rte_pktmbuf_data_len(pkt);
205 ret = write(p->fd, pkt_data, n_bytes);
210 RTE_PORT_FD_WRITER_STATS_PKTS_DROP_ADD(p, p->tx_buf_count - i);
212 for (i = 0; i < p->tx_buf_count; i++)
213 rte_pktmbuf_free(p->tx_buf[i]);
219 rte_port_fd_writer_tx(void *port, struct rte_mbuf *pkt)
221 struct rte_port_fd_writer *p =
224 p->tx_buf[p->tx_buf_count++] = pkt;
225 RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(p, 1);
226 if (p->tx_buf_count >= p->tx_burst_sz)
233 rte_port_fd_writer_tx_bulk(void *port,
234 struct rte_mbuf **pkts,
237 struct rte_port_fd_writer *p =
239 uint32_t tx_buf_count = p->tx_buf_count;
241 if ((pkts_mask & (pkts_mask + 1)) == 0) {
242 uint64_t n_pkts = __builtin_popcountll(pkts_mask);
245 for (i = 0; i < n_pkts; i++)
246 p->tx_buf[tx_buf_count++] = pkts[i];
247 RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(p, n_pkts);
249 for ( ; pkts_mask; ) {
250 uint32_t pkt_index = __builtin_ctzll(pkts_mask);
251 uint64_t pkt_mask = 1LLU << pkt_index;
252 struct rte_mbuf *pkt = pkts[pkt_index];
254 p->tx_buf[tx_buf_count++] = pkt;
255 RTE_PORT_FD_WRITER_STATS_PKTS_IN_ADD(p, 1);
256 pkts_mask &= ~pkt_mask;
259 p->tx_buf_count = tx_buf_count;
260 if (tx_buf_count >= p->tx_burst_sz)
267 rte_port_fd_writer_flush(void *port)
269 struct rte_port_fd_writer *p =
272 if (p->tx_buf_count > 0)
279 rte_port_fd_writer_free(void *port)
282 RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
286 rte_port_fd_writer_flush(port);
292 static int rte_port_fd_writer_stats_read(void *port,
293 struct rte_port_out_stats *stats, int clear)
295 struct rte_port_fd_writer *p =
299 memcpy(stats, &p->stats, sizeof(p->stats));
302 memset(&p->stats, 0, sizeof(p->stats));
308 * Port FD Writer Nodrop
310 #ifdef RTE_PORT_STATS_COLLECT
312 #define RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(port, val) \
313 do { port->stats.n_pkts_in += val; } while (0)
314 #define RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_DROP_ADD(port, val) \
315 do { port->stats.n_pkts_drop += val; } while (0)
319 #define RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(port, val)
320 #define RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_DROP_ADD(port, val)
324 struct rte_port_fd_writer_nodrop {
325 struct rte_port_out_stats stats;
327 struct rte_mbuf *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
328 uint32_t tx_burst_sz;
329 uint16_t tx_buf_count;
335 rte_port_fd_writer_nodrop_create(void *params, int socket_id)
337 struct rte_port_fd_writer_nodrop_params *conf =
339 struct rte_port_fd_writer_nodrop *port;
341 /* Check input parameters */
342 if ((conf == NULL) ||
344 (conf->tx_burst_sz == 0) ||
345 (conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX) ||
346 (!rte_is_power_of_2(conf->tx_burst_sz))) {
347 RTE_LOG(ERR, PORT, "%s: Invalid input parameters\n", __func__);
351 /* Memory allocation */
352 port = rte_zmalloc_socket("PORT", sizeof(*port),
353 RTE_CACHE_LINE_SIZE, socket_id);
355 RTE_LOG(ERR, PORT, "%s: Failed to allocate port\n", __func__);
361 port->tx_burst_sz = conf->tx_burst_sz;
362 port->tx_buf_count = 0;
365 * When n_retries is 0 it means that we should wait for every packet to
366 * send no matter how many retries should it take. To limit number of
367 * branches in fast path, we use UINT64_MAX instead of branching.
369 port->n_retries = (conf->n_retries == 0) ? UINT64_MAX : conf->n_retries;
375 send_burst_nodrop(struct rte_port_fd_writer_nodrop *p)
381 for (i = 0; (i < p->tx_buf_count) && (n_retries < p->n_retries); i++) {
382 struct rte_mbuf *pkt = p->tx_buf[i];
383 void *pkt_data = rte_pktmbuf_mtod(pkt, void*);
384 size_t n_bytes = rte_pktmbuf_data_len(pkt);
386 for ( ; n_retries < p->n_retries; n_retries++) {
389 ret = write(p->fd, pkt_data, n_bytes);
395 RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_DROP_ADD(p, p->tx_buf_count - i);
397 for (i = 0; i < p->tx_buf_count; i++)
398 rte_pktmbuf_free(p->tx_buf[i]);
404 rte_port_fd_writer_nodrop_tx(void *port, struct rte_mbuf *pkt)
406 struct rte_port_fd_writer_nodrop *p =
409 p->tx_buf[p->tx_buf_count++] = pkt;
410 RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(p, 1);
411 if (p->tx_buf_count >= p->tx_burst_sz)
412 send_burst_nodrop(p);
418 rte_port_fd_writer_nodrop_tx_bulk(void *port,
419 struct rte_mbuf **pkts,
422 struct rte_port_fd_writer_nodrop *p =
424 uint32_t tx_buf_count = p->tx_buf_count;
426 if ((pkts_mask & (pkts_mask + 1)) == 0) {
427 uint64_t n_pkts = __builtin_popcountll(pkts_mask);
430 for (i = 0; i < n_pkts; i++)
431 p->tx_buf[tx_buf_count++] = pkts[i];
432 RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(p, n_pkts);
434 for ( ; pkts_mask; ) {
435 uint32_t pkt_index = __builtin_ctzll(pkts_mask);
436 uint64_t pkt_mask = 1LLU << pkt_index;
437 struct rte_mbuf *pkt = pkts[pkt_index];
439 p->tx_buf[tx_buf_count++] = pkt;
440 RTE_PORT_FD_WRITER_NODROP_STATS_PKTS_IN_ADD(p, 1);
441 pkts_mask &= ~pkt_mask;
444 p->tx_buf_count = tx_buf_count;
445 if (tx_buf_count >= p->tx_burst_sz)
446 send_burst_nodrop(p);
452 rte_port_fd_writer_nodrop_flush(void *port)
454 struct rte_port_fd_writer_nodrop *p =
457 if (p->tx_buf_count > 0)
458 send_burst_nodrop(p);
464 rte_port_fd_writer_nodrop_free(void *port)
467 RTE_LOG(ERR, PORT, "%s: Port is NULL\n", __func__);
471 rte_port_fd_writer_nodrop_flush(port);
477 static int rte_port_fd_writer_nodrop_stats_read(void *port,
478 struct rte_port_out_stats *stats, int clear)
480 struct rte_port_fd_writer_nodrop *p =
484 memcpy(stats, &p->stats, sizeof(p->stats));
487 memset(&p->stats, 0, sizeof(p->stats));
493 * Summary of port operations
495 struct rte_port_in_ops rte_port_fd_reader_ops = {
496 .f_create = rte_port_fd_reader_create,
497 .f_free = rte_port_fd_reader_free,
498 .f_rx = rte_port_fd_reader_rx,
499 .f_stats = rte_port_fd_reader_stats_read,
502 struct rte_port_out_ops rte_port_fd_writer_ops = {
503 .f_create = rte_port_fd_writer_create,
504 .f_free = rte_port_fd_writer_free,
505 .f_tx = rte_port_fd_writer_tx,
506 .f_tx_bulk = rte_port_fd_writer_tx_bulk,
507 .f_flush = rte_port_fd_writer_flush,
508 .f_stats = rte_port_fd_writer_stats_read,
511 struct rte_port_out_ops rte_port_fd_writer_nodrop_ops = {
512 .f_create = rte_port_fd_writer_nodrop_create,
513 .f_free = rte_port_fd_writer_nodrop_free,
514 .f_tx = rte_port_fd_writer_nodrop_tx,
515 .f_tx_bulk = rte_port_fd_writer_nodrop_tx_bulk,
516 .f_flush = rte_port_fd_writer_nodrop_flush,
517 .f_stats = rte_port_fd_writer_nodrop_stats_read,