1 /******************************************************************************
3 * Copyright (c) 2019 Intel.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 *******************************************************************************/
21 * @brief This file has all definitions for the Ethernet Data Interface Layer
23 * @ingroup group_lte_source_auxlib
24 * @author Intel Corporation
32 #include <sys/queue.h>
35 #include <linux/limits.h>
36 #include <sys/types.h>
42 #include <rte_config.h>
43 #include <rte_common.h>
45 #include <rte_memory.h>
46 #include <rte_memcpy.h>
47 #include <rte_memzone.h>
49 #include <rte_per_lcore.h>
50 #include <rte_launch.h>
51 #include <rte_atomic.h>
52 #include <rte_cycles.h>
53 #include <rte_prefetch.h>
54 #include <rte_lcore.h>
55 #include <rte_per_lcore.h>
56 #include <rte_branch_prediction.h>
57 #include <rte_interrupts.h>
59 #include <rte_debug.h>
60 #include <rte_ethdev.h>
63 #include <rte_timer.h>
67 #include "xran_fh_o_du.h"
68 #include "xran_mlog_lnx.h"
69 #include "xran_printf.h"
71 #include "../src/xran_lib_mlog_tasks_id.h"
73 #define BURST_RX_IO_SIZE 48
75 struct xran_ethdi_ctx g_ethdi_ctx = { 0 };
76 enum xran_if_state xran_if_current_state = XRAN_STOPPED;
78 struct rte_mbuf *xran_ethdi_mbuf_alloc(void)
80 return rte_pktmbuf_alloc(_eth_mbuf_pool);
83 int xran_ethdi_mbuf_send(struct rte_mbuf *mb, uint16_t ethertype)
85 struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
88 mb->port = ctx->io_cfg.port[ETHDI_UP_VF];
89 xran_add_eth_hdr_vlan(&ctx->entities[ID_RU], ethertype, mb, ctx->up_vtag);
91 res = xran_enqueue_mbuf(mb, ctx->tx_ring[ETHDI_UP_VF]);
95 int xran_ethdi_mbuf_send_cp(struct rte_mbuf *mb, uint16_t ethertype)
97 struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
100 mb->port = ctx->io_cfg.port[ETHDI_CP_VF];
101 xran_add_eth_hdr_vlan(&ctx->entities[ID_RU], ethertype, mb, ctx->cp_vtag);
103 res = xran_enqueue_mbuf(mb, ctx->tx_ring[ETHDI_CP_VF]);
107 void xran_ethdi_stop_tx()
109 struct xran_ethdi_ctx *const ctx = xran_ethdi_get_ctx();
110 rte_timer_stop_sync(&ctx->timer_tx);
116 ethertype_handler fn;
117 } xran_ethertype_handlers[] = {
118 { ETHER_TYPE_ETHDI, NULL },
119 { ETHER_TYPE_ECPRI, NULL },
120 { ETHER_TYPE_START_TX, NULL }
125 int xran_register_ethertype_handler(uint16_t ethertype, ethertype_handler callback)
129 for (i = 0; i < RTE_DIM(xran_ethertype_handlers); ++i)
130 if (xran_ethertype_handlers[i].ethertype == ethertype) {
131 xran_ethertype_handlers[i].fn = callback;
136 elog("support for ethertype %u not found", ethertype);
141 int xran_handle_ether(uint16_t ethertype, struct rte_mbuf *pkt, uint64_t rx_time)
145 for (i = 0; i < RTE_DIM(xran_ethertype_handlers); ++i)
146 if (xran_ethertype_handlers[i].ethertype == ethertype)
147 if (xran_ethertype_handlers[i].fn)
148 return xran_ethertype_handlers[i].fn(pkt, rx_time);
150 wlog("Packet with unrecognized ethertype '%.4X' dropped", ethertype);
156 /* Process vlan tag. Cut the ethernet header. Call the etherype handlers. */
157 int xran_ethdi_filter_packet(struct rte_mbuf *pkt, uint64_t rx_time)
159 struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
162 if (rte_vlan_strip(pkt) == 0) {
163 if (pkt->vlan_tci == ctx->cp_vtag) {
164 dlog("VLAN tci matches %d", pkt->vlan_tci);
166 wlog("packet with wrong VLAN tag %d, dropping",
171 dlog("Packet not vlan tagged");
174 const struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(pkt, void *);
176 #if defined(DPDKIO_DEBUG) && DPDKIO_DEBUG > 1
177 nlog("*** processing RX'ed packet of size %d ***",
178 rte_pktmbuf_data_len(pkt));
179 /* TODO: just dump ethernet header in readable format? */
182 #if defined(DPDKIO_DEBUG) && DPDKIO_DEBUG > 1
184 char dst[ETHER_ADDR_FMT_SIZE] = "(empty)";
185 char src[ETHER_ADDR_FMT_SIZE] = "(empty)";
187 ether_format_addr(dst, sizeof(dst), ð_hdr->d_addr);
188 ether_format_addr(src, sizeof(src), ð_hdr->s_addr);
189 nlog("src: %s dst: %s ethertype: %.4X", dst, src,
190 rte_be_to_cpu_16(eth_hdr->ether_type));
194 /* Cut out the ethernet header. It's not needed anymore. */
195 if (rte_pktmbuf_adj(pkt, sizeof(*eth_hdr)) == NULL) {
196 wlog("Packet too short, dropping");
201 return xran_handle_ether(rte_be_to_cpu_16(eth_hdr->ether_type), pkt, rx_time);
205 //-------------------------------------------------------------------------------------------
208 * @param[in] port - DPDK ETH port id
213 * Prints statistics of usage of DPDK port
216 //-------------------------------------------------------------------------------------------
217 void xran_ethdi_ports_stats(void)
219 struct rte_eth_stats stats;
220 struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
223 for(i = 0; i < ETHDI_VF_MAX; i++){
224 /* Get stats (extended stats includes common stats) */
225 rte_eth_stats_get(ctx->io_cfg.port[i], &stats);
226 printf("DPDK stats:\n");
227 printf("** Port %hhu **\n", ctx->io_cfg.port[i]);
228 printf("ierrors:\t%lu\n", stats.ierrors);
229 printf("oerrors:\t%lu\n", stats.oerrors);
230 printf("ipackets:\t%lu\n", stats.ipackets);
231 printf("opackets:\t%lu\n", stats.opackets);
232 printf("imissed:\t%lu\n", stats.imissed);
233 printf("rx_nombuf:\t%lu\n", stats.rx_nombuf);
238 /* Check the link status of all ports in up to 9s, and print them finally */
239 static void check_port_link_status(uint8_t portid)
241 #define CHECK_INTERVAL 100 /* 100ms */
242 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
243 uint8_t count, all_ports_up, print_flag = 0;
244 struct rte_eth_link link;
246 printf("\nChecking link status");
248 for (count = 0; count <= MAX_CHECK_TIME; count++) {
250 memset(&link, 0, sizeof(link));
251 rte_eth_link_get_nowait(portid, &link);
253 /* print link status if flag set */
254 if (print_flag == 1) {
255 if (link.link_status)
256 printf("Port %d Link Up - speed %u "
257 "Mbps - %s\n", (uint8_t)portid,
258 (unsigned)link.link_speed,
259 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
260 ("full-duplex") : ("half-duplex\n"));
262 printf("Port %d Link Down\n",
265 /* clear all_ports_up flag if any link down */
266 if (link.link_status == ETH_LINK_DOWN) {
270 /* after finally printing all link status, get out */
274 if (all_ports_up == 0) {
277 rte_delay_ms(CHECK_INTERVAL);
280 /* set the print_flag if all ports up or timeout */
281 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
283 printf(" ... done\n");
289 int xran_ethdi_init_dpdk_io(char *name, const struct xran_io_loop_cfg *io_cfg,
290 int *lcore_id, struct ether_addr *p_lls_cu_addr, struct ether_addr *p_ru_addr,
291 uint16_t cp_vlan, uint16_t up_vlan)
293 uint16_t port[2] = {0xffff, 0xffff};
294 struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
297 char bbdev_wdev[32] = "";
298 char bbdev_vdev[32] = "";
300 char *argv[] = { name, "-c ffffffff", "-n2", "--socket-mem=8192", "--proc-type=auto",
301 "--file-prefix", name, "-w", "0000:00:00.0", bbdev_wdev, bbdev_vdev};
305 if(io_cfg->bbdev_mode != XRAN_BBDEV_NOT_USED){
306 printf("BBDEV_FEC_ACCL_NR5G\n");
307 if (io_cfg->bbdev_mode == XRAN_BBDEV_MODE_HW_ON){
308 // hw-accelerated bbdev
309 printf("hw-accelerated bbdev %s\n", io_cfg->bbdev_dev[0]);
310 sprintf(bbdev_wdev, "-w %s", io_cfg->bbdev_dev[0]);
311 } else if (io_cfg->bbdev_mode == XRAN_BBDEV_MODE_HW_OFF){
312 // hw-accelerated bbdev disable
313 if(io_cfg->bbdev_dev[0]){
314 printf("hw-accelerated bbdev disable %s\n", io_cfg->bbdev_dev[0]);
315 sprintf(bbdev_wdev, "-b %s", io_cfg->bbdev_dev[0]);
317 sprintf(bbdev_wdev, "%s", "--vdev=baseband_turbo_sw");
319 rte_panic("Cannot init DPDK incorrect [bbdev_mode %d]\n", io_cfg->bbdev_mode);
323 snprintf(core_mask, sizeof(core_mask), "-c%x",
324 (1 << io_cfg->core) |
325 (1 << io_cfg->system_core) |
326 (1 << io_cfg->pkt_proc_core) |
327 (1 << io_cfg->pkt_aux_core) |
328 (1 << io_cfg->timing_core));
330 ctx->io_cfg = *io_cfg;
331 ctx->ping_state = PING_IDLE;
332 ctx->known_peers = 1;
333 ctx->busy_poll_till = rte_rdtsc();
334 ctx->cp_vtag = cp_vlan;
335 ctx->up_vtag = up_vlan;
337 for (i = 0; i <= ID_BROADCAST; i++) /* Initialize all as broadcast */
338 memset(&ctx->entities[i], 0xFF, sizeof(ctx->entities[0]));
340 printf("%s: Calling rte_eal_init:", __FUNCTION__);
341 for (i = 0; i < RTE_DIM(argv); i++)
343 printf("%s ", argv[i]);
348 /* This will return on system_core, which is not necessarily the
349 * one we're on right now. */
350 if (rte_eal_init(RTE_DIM(argv), argv) < 0)
351 rte_panic("Cannot init EAL: %s\n", rte_strerror(rte_errno));
353 xran_init_mbuf_pool();
357 rte_timer_subsystem_init();
358 rte_timer_init(&ctx->timer_ping);
359 rte_timer_init(&ctx->timer_sync);
360 rte_timer_init(&ctx->timer_tx);
362 *lcore_id = rte_get_next_lcore(rte_lcore_id(), 0, 0);
364 PANIC_ON(*lcore_id == RTE_MAX_LCORE, "out of lcores for io_loop()");
366 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
367 for (i = 0; i < ETHDI_VF_MAX; i ++){
368 if(io_cfg->dpdk_dev[i]){
369 if (rte_eth_dev_attach(io_cfg->dpdk_dev[i], &port[i]) != 0 ||
370 rte_eth_dev_count_avail() == 0)
371 errx(1, "Network port doesn't exist.");
372 xran_init_port(port[i], p_lls_cu_addr);
374 printf("no DPDK port provided\n");
377 ctx->tx_ring[i] = rte_ring_create("tx_ring_up", NUM_MBUFS,
378 rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
379 ctx->rx_ring[i] = rte_ring_create("rx_ring_up", NUM_MBUFS,
380 rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
381 ctx->pkt_dump_ring[i] = rte_ring_create("pkt_dump_ring_up", NUM_MBUFS,
382 rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
384 ctx->tx_ring[i] = rte_ring_create("tx_ring_cp", NUM_MBUFS,
385 rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
386 ctx->rx_ring[i] = rte_ring_create("rx_ring_cp", NUM_MBUFS,
387 rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
388 ctx->pkt_dump_ring[i] = rte_ring_create("pkt_dump_ring_cp", NUM_MBUFS,
389 rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
391 if(io_cfg->dpdk_dev[i])
392 check_port_link_status(port[i]);
395 rte_panic("ethdi_dpdk_io_loop() failed to start with RTE_PROC_SECONDARY\n");
397 PANIC_ON(ctx->tx_ring == NULL, "failed to allocate tx ring");
398 PANIC_ON(ctx->rx_ring == NULL, "failed to allocate rx ring");
399 PANIC_ON(ctx->pkt_dump_ring == NULL, "failed to allocate pkt dumping ring");
400 for (i = 0; i < ETHDI_VF_MAX; i++){
401 ctx->io_cfg.port[i] = port[i];
402 print_dbg("port_id 0x%04x\n", ctx->io_cfg.port[i]);
405 if(io_cfg->dpdk_dev[ETHDI_UP_VF]){
406 rte_eth_macaddr_get(port[ETHDI_UP_VF], &ctx->entities[io_cfg->id]);
407 ether_addr_copy(p_ru_addr, &ctx->entities[ID_RU]);
413 static inline uint16_t xran_tx_from_ring(int port, struct rte_ring *r)
415 struct rte_mbuf *mbufs[BURST_SIZE];
416 uint16_t dequeued, sent = 0;
419 long t1 = MLogTick();
421 dequeued = rte_ring_dequeue_burst(r, (void **)mbufs, BURST_SIZE,
424 return 0; /* Nothing to send. */
426 while (1) { /* When tx queue is full it is trying again till succeed */
428 sent += rte_eth_tx_burst(port, 0, &mbufs[sent], dequeued - sent);
429 MLogTask(PID_RADIO_ETH_TX_BURST, t1, MLogTick());
431 if (sent == dequeued)
436 int32_t process_dpdk_io(void)
438 struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
439 const struct xran_io_loop_cfg *const cfg = &(xran_ethdi_get_ctx()->io_cfg);
440 const int port[ETHDI_VF_MAX] = {cfg->port[ETHDI_UP_VF], cfg->port[ETHDI_CP_VF]};
443 for (port_id = 0; port_id < ETHDI_VF_MAX; port_id++){
444 struct rte_mbuf *mbufs[BURST_RX_IO_SIZE];
445 if(port[port_id] == 0xFF);
447 const uint16_t rxed = rte_eth_rx_burst(port[port_id], 0, mbufs, BURST_RX_IO_SIZE);
450 long t1 = MLogTick();
451 enq_n = rte_ring_enqueue_burst(ctx->rx_ring[port_id], (void*)mbufs, rxed, NULL);
453 rte_panic("error enq\n");
454 MLogTask(PID_RADIO_RX_VALIDATE, t1, MLogTick());
458 const uint16_t sent = xran_tx_from_ring(port[port_id], ctx->tx_ring[port_id]);
460 if (XRAN_STOPPED == xran_if_current_state)
464 if (XRAN_STOPPED == xran_if_current_state)
471 static inline void xran_process_rx_burst(struct rte_mbuf *mbufs[], uint16_t n_mbufs,
479 for (i = 0; i < n_mbufs; ++i)
481 if (xran_ethdi_filter_packet(mbufs[i], rx_time) == MBUF_FREE)
482 rte_pktmbuf_free(mbufs[i]);
485 #ifdef DPDKIO_LATENCY_DEBUG
486 struct timeval tv_now, tv_diff;
488 gettimeofday(&tv_now, NULL);
490 nlog("Warning - received %d mbufs in a row", n_mbufs);
492 timersub(&tv_now, &rx_time, &tv_diff);
493 nlog("rx processing took %d usec", tv_diff.tv_usec);
498 * This is the main DPDK-IO loop.
499 * This will sleep if there's no packets incoming and there's
500 * no work enqueued, sleep lenth is defined in IDLE_SLEEP_MICROSECS
502 int xran_ethdi_dpdk_io_loop(void *io_loop_cfg)
504 struct sched_param sched_param;
506 struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
507 const struct xran_io_loop_cfg *const cfg = &(xran_ethdi_get_ctx()->io_cfg);
508 const int port[ETHDI_VF_MAX] = {cfg->port[ETHDI_UP_VF], cfg->port[ETHDI_CP_VF]};
510 printf("%s [PORT: %d %d] [CPU %2d] [PID: %6d]\n", __FUNCTION__, port[ETHDI_UP_VF], port[ETHDI_CP_VF] , rte_lcore_id(), getpid());
512 printf("%s [CPU %2d] [PID: %6d]\n", __FUNCTION__, rte_lcore_id(), getpid());
513 sched_param.sched_priority = XRAN_THREAD_DEFAULT_PRIO;
514 if ((res = pthread_setschedparam(pthread_self(), SCHED_FIFO, &sched_param))) {
515 printf("priority is not changed: coreId = %d, result1 = %d\n",rte_lcore_id(), res);
519 if(process_dpdk_io()!=0)
525 puts("IO loop finished");