2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
15 #include <vnet/vnet.h>
16 #include <vppinfra/vec.h>
17 #include <vppinfra/error.h>
18 #include <vppinfra/format.h>
19 #include <vppinfra/bitmap.h>
21 #include <vnet/ethernet/ethernet.h>
22 #include <vnet/devices/dpdk/dpdk.h>
23 #include <vlib/unix/physmem.h>
24 #include <vlib/pci/pci.h>
25 #include <vlib/unix/pci.h>
31 #include <sys/mount.h>
35 #include "dpdk_priv.h"
37 dpdk_main_t dpdk_main;
39 /* force linker to link functions used by vlib and declared weak */
40 void *vlib_weakly_linked_functions[] = {
42 &rte_pktmbuf_pool_init,
45 #define LINK_STATE_ELOGS 0
47 #define DEFAULT_HUGE_DIR "/run/vpp/hugepages"
48 #define VPP_RUN_DIR "/run/vpp"
50 /* Port configuration, mildly modified Intel app values */
52 static struct rte_eth_conf port_conf_template = {
55 .header_split = 0, /**< Header Split disabled */
56 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
57 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
58 .hw_strip_crc = 1, /**< CRC stripped by hardware */
61 .mq_mode = ETH_MQ_TX_NONE,
66 dpdk_port_setup (dpdk_main_t * dm, dpdk_device_t * xd)
68 vlib_main_t * vm = vlib_get_main();
69 vlib_buffer_main_t * bm = vm->buffer_main;
73 ASSERT(os_get_cpu_number() == 0);
76 vnet_hw_interface_set_flags (dm->vnet_main, xd->vlib_hw_if_index, 0);
77 rte_eth_dev_stop (xd->device_index);
80 rv = rte_eth_dev_configure (xd->device_index, xd->rx_q_used,
81 xd->tx_q_used, &xd->port_conf);
84 return clib_error_return (0, "rte_eth_dev_configure[%d]: err %d",
85 xd->device_index, rv);
87 /* Set up one TX-queue per worker thread */
88 for (j = 0; j < xd->tx_q_used; j++)
90 rv = rte_eth_tx_queue_setup(xd->device_index, j, xd->nb_tx_desc,
91 xd->cpu_socket, &xd->tx_conf);
97 return clib_error_return (0, "rte_eth_tx_queue_setup[%d]: err %d",
98 xd->device_index, rv);
100 for (j = 0; j < xd->rx_q_used; j++)
103 rv = rte_eth_rx_queue_setup(xd->device_index, j, xd->nb_rx_desc,
105 bm->pktmbuf_pools[xd->cpu_socket_id_by_queue[j]]);
107 return clib_error_return (0, "rte_eth_rx_queue_setup[%d]: err %d",
108 xd->device_index, rv);
112 rte_eth_dev_start (xd->device_index);
117 static u32 dpdk_flag_change (vnet_main_t * vnm,
118 vnet_hw_interface_t * hi,
121 dpdk_main_t * dm = &dpdk_main;
122 dpdk_device_t * xd = vec_elt_at_index (dm->devices, hi->dev_instance);
125 if (ETHERNET_INTERFACE_FLAG_CONFIG_PROMISC(flags))
128 xd->promisc = flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL;
133 rte_eth_promiscuous_enable(xd->device_index);
135 rte_eth_promiscuous_disable(xd->device_index);
138 else if (ETHERNET_INTERFACE_FLAG_CONFIG_MTU(flags))
141 * DAW-FIXME: The Cisco VIC firmware does not provide an api for a
142 * driver to dynamically change the mtu. If/when the
143 * VIC firmware gets fixed, then this should be removed.
145 if (xd->pmd == VNET_DPDK_PMD_VICE ||
146 xd->pmd == VNET_DPDK_PMD_ENIC)
148 struct rte_eth_dev_info dev_info;
151 * Restore mtu to what has been set by CIMC in the firmware cfg.
153 rte_eth_dev_info_get(xd->device_index, &dev_info);
154 hi->max_packet_bytes = dev_info.max_rx_pktlen;
156 vlib_cli_output (vlib_get_main(),
157 "Cisco VIC mtu can only be changed "
158 "using CIMC then rebooting the server!");
164 xd->port_conf.rxmode.max_rx_pkt_len = hi->max_packet_bytes;
167 rte_eth_dev_stop (xd->device_index);
169 rv = rte_eth_dev_configure
176 vlib_cli_output (vlib_get_main(),
177 "rte_eth_dev_configure[%d]: err %d",
178 xd->device_index, rv);
180 rte_eth_dev_set_mtu(xd->device_index, hi->max_packet_bytes);
183 rte_eth_dev_start (xd->device_index);
190 extern int rte_netmap_probe(void);
194 dpdk_device_lock_init(dpdk_device_t * xd)
197 vec_validate(xd->lockp, xd->tx_q_used - 1);
198 for (q = 0; q < xd->tx_q_used; q++)
200 xd->lockp[q] = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
201 CLIB_CACHE_LINE_BYTES);
202 memset ((void *) xd->lockp[q], 0, CLIB_CACHE_LINE_BYTES);
208 dpdk_device_lock_free(dpdk_device_t * xd)
212 for (q = 0; q < vec_len(xd->lockp); q++)
213 clib_mem_free((void *) xd->lockp[q]);
219 static clib_error_t *
220 dpdk_lib_init (dpdk_main_t * dm)
225 clib_error_t * error;
226 vlib_main_t * vm = vlib_get_main();
227 vlib_thread_main_t * tm = vlib_get_thread_main();
228 vnet_sw_interface_t * sw;
229 vnet_hw_interface_t * hi;
231 vlib_thread_registration_t * tr;
235 u8 af_packet_port_id = 0;
237 dm->input_cpu_first_index = 0;
238 dm->input_cpu_count = 1;
240 /* find out which cpus will be used for input */
241 p = hash_get_mem (tm->thread_registrations_by_name, "io");
242 tr = p ? (vlib_thread_registration_t *) p[0] : 0;
244 if (!tr || tr->count == 0)
246 /* no io threads, workers doing input */
247 p = hash_get_mem (tm->thread_registrations_by_name, "workers");
248 tr = p ? (vlib_thread_registration_t *) p[0] : 0;
252 dm->have_io_threads = 1;
255 if (tr && tr->count > 0)
257 dm->input_cpu_first_index = tr->first_index;
258 dm->input_cpu_count = tr->count;
261 vec_validate_aligned (dm->devices_by_cpu, tm->n_vlib_mains - 1,
262 CLIB_CACHE_LINE_BYTES);
264 vec_validate_aligned (dm->workers, tm->n_vlib_mains - 1,
265 CLIB_CACHE_LINE_BYTES);
268 if(rte_netmap_probe() < 0)
269 return clib_error_return (0, "rte netmap probe failed");
272 nports = rte_eth_dev_count();
275 clib_warning ("DPDK drivers found no ports...");
279 clib_warning ("DPDK drivers found %d ports...", nports);
282 * All buffers are all allocated from the same rte_mempool.
283 * Thus they all have the same number of data bytes.
285 dm->vlib_buffer_free_list_index =
286 vlib_buffer_get_or_create_free_list (
287 vm, VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES, "dpdk rx");
289 for (i = 0; i < nports; i++)
293 struct rte_eth_dev_info dev_info;
295 struct rte_eth_link l;
297 /* Create vnet interface */
298 vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
299 xd->nb_rx_desc = DPDK_NB_RX_DESC_DEFAULT;
300 xd->nb_tx_desc = DPDK_NB_TX_DESC_DEFAULT;
301 xd->cpu_socket = (i8) rte_eth_dev_socket_id(i);
302 rte_eth_dev_info_get(i, &dev_info);
304 memcpy(&xd->tx_conf, &dev_info.default_txconf,
305 sizeof(struct rte_eth_txconf));
306 if (dm->no_multi_seg)
308 xd->tx_conf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
309 port_conf_template.rxmode.jumbo_frame = 0;
313 xd->tx_conf.txq_flags &= ~ETH_TXQ_FLAGS_NOMULTSEGS;
314 port_conf_template.rxmode.jumbo_frame = 1;
317 memcpy(&xd->port_conf, &port_conf_template, sizeof(struct rte_eth_conf));
319 xd->tx_q_used = clib_min(dev_info.max_tx_queues, tm->n_vlib_mains);
321 if (dm->max_tx_queues)
322 xd->tx_q_used = clib_min(xd->tx_q_used, dm->max_tx_queues);
324 if (dm->use_rss > 1 && dev_info.max_rx_queues >= dm->use_rss)
326 xd->rx_q_used = dm->use_rss;
327 xd->port_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
328 xd->port_conf.rx_adv_conf.rss_conf.rss_hf = ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP;
333 xd->dev_type = VNET_DPDK_DEV_ETH;
335 /* workaround for drivers not setting driver_name */
336 if (!dev_info.driver_name)
337 dev_info.driver_name = dev_info.pci_dev->driver->name;
338 ASSERT(dev_info.driver_name);
343 #define _(s,f) else if (!strcmp(dev_info.driver_name, s)) \
344 xd->pmd = VNET_DPDK_PMD_##f;
350 xd->pmd = VNET_DPDK_PMD_UNKNOWN;
355 case VNET_DPDK_PMD_E1000EM:
356 case VNET_DPDK_PMD_IGB:
357 case VNET_DPDK_PMD_IGBVF:
358 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
362 case VNET_DPDK_PMD_IXGBE:
363 case VNET_DPDK_PMD_IXGBEVF:
364 case VNET_DPDK_PMD_THUNDERX:
365 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
366 xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
367 xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
371 case VNET_DPDK_PMD_VICE:
372 case VNET_DPDK_PMD_ENIC:
373 rte_eth_link_get_nowait(i, &l);
374 if (l.link_speed == 40000)
376 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
377 xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
378 xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
382 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
383 xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
384 xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
388 /* Intel Fortville */
389 case VNET_DPDK_PMD_I40E:
390 case VNET_DPDK_PMD_I40EVF:
391 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
392 xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
393 xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
395 switch (dev_info.pci_dev->id.device_id) {
396 case I40E_DEV_ID_10G_BASE_T:
397 case I40E_DEV_ID_SFP_XL710:
398 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
400 case I40E_DEV_ID_QSFP_A:
401 case I40E_DEV_ID_QSFP_B:
402 case I40E_DEV_ID_QSFP_C:
403 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
406 rte_eth_link_get_nowait(i, &l);
407 xd->port_type = l.link_speed == 10000 ?
408 VNET_DPDK_PORT_TYPE_ETH_10G : VNET_DPDK_PORT_TYPE_ETH_40G;
411 xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
415 case VNET_DPDK_PMD_CXGBE:
416 switch (dev_info.pci_dev->id.device_id) {
417 case 0x5410: /* T580-LP-cr */
418 xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
419 xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
420 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
423 xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
424 xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
425 xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
429 /* Intel Red Rock Canyon */
430 case VNET_DPDK_PMD_FM10K:
431 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_SWITCH;
432 xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
433 xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
437 case VNET_DPDK_PMD_VIRTIO:
438 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
439 xd->nb_rx_desc = DPDK_NB_RX_DESC_VIRTIO;
440 xd->nb_tx_desc = DPDK_NB_TX_DESC_VIRTIO;
444 case VNET_DPDK_PMD_VMXNET3:
445 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
446 xd->tx_conf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
449 case VNET_DPDK_PMD_AF_PACKET:
450 xd->port_type = VNET_DPDK_PORT_TYPE_AF_PACKET;
451 xd->af_packet_port_id = af_packet_port_id++;
454 case VNET_DPDK_PMD_BOND:
455 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_BOND;
459 xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
463 if(strncmp(dev_info.driver_name, "vale", 4) == 0
464 || strncmp(dev_info.driver_name, "netmap", 6) == 0)
466 xd->pmd = VNET_DPDK_PMD_NETMAP;
467 xd->port_type = VNET_DPDK_PORT_TYPE_NETMAP;
474 * Ensure default mtu is not > the mtu read from the hardware.
475 * Otherwise rte_eth_dev_configure() will fail and the port will
478 if (ETHERNET_MAX_PACKET_BYTES > dev_info.max_rx_pktlen)
481 * This device does not support the platforms's max frame
482 * size. Use it's advertised mru instead.
484 xd->port_conf.rxmode.max_rx_pkt_len = dev_info.max_rx_pktlen;
488 xd->port_conf.rxmode.max_rx_pkt_len = ETHERNET_MAX_PACKET_BYTES;
491 * Some platforms do not account for Ethernet FCS (4 bytes) in
492 * MTU calculations. To interop with them increase mru but only
493 * if the device's settings can support it.
495 if ((dev_info.max_rx_pktlen >= (ETHERNET_MAX_PACKET_BYTES + 4)) &&
496 xd->port_conf.rxmode.hw_strip_crc)
499 * Allow additional 4 bytes (for Ethernet FCS). These bytes are
500 * stripped by h/w and so will not consume any buffer memory.
502 xd->port_conf.rxmode.max_rx_pkt_len += 4;
507 * DAW-FIXME: VMXNET3 driver doesn't support jumbo / multi-buffer pkts
509 if (xd->pmd == VNET_DPDK_PMD_VMXNET3)
511 xd->port_conf.rxmode.max_rx_pkt_len = 1518;
512 xd->port_conf.rxmode.jumbo_frame = 0;
515 if (xd->pmd == VNET_DPDK_PMD_AF_PACKET)
517 f64 now = vlib_time_now(vm);
519 rnd = (u32) (now * 1e6);
520 rnd = random_u32 (&rnd);
521 memcpy (addr+2, &rnd, sizeof(rnd));
526 rte_eth_macaddr_get(i,(struct ether_addr *)addr);
528 if (xd->tx_q_used < tm->n_vlib_mains)
529 dpdk_device_lock_init(xd);
531 xd->device_index = xd - dm->devices;
532 ASSERT(i == xd->device_index);
533 xd->per_interface_next_index = ~0;
535 /* assign interface to input thread */
536 dpdk_device_and_queue_t * dq;
539 for (q = 0; q < xd->rx_q_used; q++)
541 int cpu = dm->input_cpu_first_index + next_cpu;
542 unsigned lcore = vlib_worker_threads[cpu].dpdk_lcore_id;
545 * numa node for worker thread handling this queue
546 * needed for taking buffers from the right mempool
548 vec_validate(xd->cpu_socket_id_by_queue, q);
549 xd->cpu_socket_id_by_queue[q] = rte_lcore_to_socket_id(lcore);
552 * construct vector of (device,queue) pairs for each worker thread
554 vec_add2(dm->devices_by_cpu[cpu], dq, 1);
555 dq->device = xd->device_index;
559 if (next_cpu == dm->input_cpu_count)
563 vec_validate_aligned (xd->tx_vectors, tm->n_vlib_mains,
564 CLIB_CACHE_LINE_BYTES);
565 for (j = 0; j < tm->n_vlib_mains; j++)
567 vec_validate_ha (xd->tx_vectors[j], DPDK_TX_RING_SIZE,
568 sizeof(tx_ring_hdr_t), CLIB_CACHE_LINE_BYTES);
569 vec_reset_length (xd->tx_vectors[j]);
572 vec_validate_aligned (xd->rx_vectors, xd->rx_q_used,
573 CLIB_CACHE_LINE_BYTES);
574 for (j = 0; j< xd->rx_q_used; j++)
576 vec_validate_aligned (xd->rx_vectors[j], VLIB_FRAME_SIZE-1,
577 CLIB_CACHE_LINE_BYTES);
578 vec_reset_length (xd->rx_vectors[j]);
581 vec_validate_aligned (xd->frames, tm->n_vlib_mains,
582 CLIB_CACHE_LINE_BYTES);
584 rv = dpdk_port_setup(dm, xd);
589 /* count the number of descriptors used for this device */
590 nb_desc += xd->nb_rx_desc + xd->nb_tx_desc * xd->tx_q_used;
592 error = ethernet_register_interface
594 dpdk_device_class.index,
596 /* ethernet address */ addr,
597 &xd->vlib_hw_if_index,
602 sw = vnet_get_hw_sw_interface (dm->vnet_main, xd->vlib_hw_if_index);
603 xd->vlib_sw_if_index = sw->sw_if_index;
604 hi = vnet_get_hw_interface (dm->vnet_main, xd->vlib_hw_if_index);
607 * DAW-FIXME: The Cisco VIC firmware does not provide an api for a
608 * driver to dynamically change the mtu. If/when the
609 * VIC firmware gets fixed, then this should be removed.
611 if (xd->pmd == VNET_DPDK_PMD_VICE ||
612 xd->pmd == VNET_DPDK_PMD_ENIC)
615 * Initialize mtu to what has been set by CIMC in the firmware cfg.
617 hi->max_packet_bytes = dev_info.max_rx_pktlen;
619 * remove vlan tag from VIC port to fix VLAN0 issue.
620 * TODO Handle VLAN tagged traffic
623 vlan_off = rte_eth_dev_get_vlan_offload(xd->device_index);
624 vlan_off |= ETH_VLAN_STRIP_OFFLOAD;
625 rte_eth_dev_set_vlan_offload(xd->device_index, vlan_off);
628 * DAW-FIXME: VMXNET3 driver doesn't support jumbo / multi-buffer pkts
630 else if (xd->pmd == VNET_DPDK_PMD_VMXNET3)
631 hi->max_packet_bytes = 1518;
633 hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] =
634 xd->port_conf.rxmode.max_rx_pkt_len - sizeof(ethernet_header_t);
636 rte_eth_dev_set_mtu(xd->device_index, hi->max_packet_bytes);
639 #ifdef RTE_LIBRTE_KNI
641 clib_warning("Initializing KNI interfaces...");
642 rte_kni_init(dm->num_kni);
643 for (i = 0; i < dm->num_kni; i++)
648 /* Create vnet interface */
649 vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
650 xd->dev_type = VNET_DPDK_DEV_KNI;
652 xd->device_index = xd - dm->devices;
653 ASSERT(nports + i == xd->device_index);
654 xd->per_interface_next_index = ~0;
657 hash_set (dm->dpdk_device_by_kni_port_id, i, xd - dm->devices);
660 /* assign interface to input thread */
661 dpdk_device_and_queue_t * dq;
662 vec_add2(dm->devices_by_cpu[dm->input_cpu_first_index], dq, 1);
663 dq->device = xd->device_index;
666 vec_validate_aligned (xd->tx_vectors, tm->n_vlib_mains,
667 CLIB_CACHE_LINE_BYTES);
668 for (j = 0; j < tm->n_vlib_mains; j++)
670 vec_validate_ha (xd->tx_vectors[j], DPDK_TX_RING_SIZE,
671 sizeof(tx_ring_hdr_t), CLIB_CACHE_LINE_BYTES);
672 vec_reset_length (xd->tx_vectors[j]);
675 vec_validate_aligned (xd->rx_vectors, xd->rx_q_used,
676 CLIB_CACHE_LINE_BYTES);
677 for (j = 0; j< xd->rx_q_used; j++)
679 vec_validate_aligned (xd->rx_vectors[j], VLIB_FRAME_SIZE-1,
680 CLIB_CACHE_LINE_BYTES);
681 vec_reset_length (xd->rx_vectors[j]);
684 vec_validate_aligned (xd->frames, tm->n_vlib_mains,
685 CLIB_CACHE_LINE_BYTES);
687 /* FIXME Set up one TX-queue per worker thread */
690 f64 now = vlib_time_now(vm);
692 rnd = (u32) (now * 1e6);
693 rnd = random_u32 (&rnd);
695 memcpy (addr+2, &rnd, sizeof(rnd));
700 error = ethernet_register_interface
702 dpdk_device_class.index,
704 /* ethernet address */ addr,
705 &xd->vlib_hw_if_index,
711 sw = vnet_get_hw_sw_interface (dm->vnet_main, xd->vlib_hw_if_index);
712 xd->vlib_sw_if_index = sw->sw_if_index;
713 hi = vnet_get_hw_interface (dm->vnet_main, xd->vlib_hw_if_index);
718 if (nb_desc > dm->num_mbufs)
719 clib_warning ("%d mbufs allocated but total rx/tx ring size is %d\n",
720 dm->num_mbufs, nb_desc);
722 /* init next vhost-user if index */
723 dm->next_vu_if_id = 0;
729 dpdk_bind_devices_to_uio (dpdk_main_t * dm)
731 linux_pci_main_t * pm = &linux_pci_main;
732 clib_error_t * error;
733 vlib_pci_device_t * d;
734 pci_config_header_t * c;
737 pool_foreach (d, pm->pci_devs, ({
738 c = &d->config0.header;
739 vec_reset_length (pci_addr);
740 pci_addr = format (pci_addr, "%U%c", format_vlib_pci_addr, &d->bus_address, 0);
742 if (c->device_class != PCI_CLASS_NETWORK_ETHERNET)
745 /* if whitelist exists process only whitelisted devices */
746 if (dm->eth_if_whitelist &&
747 !strstr ((char *) dm->eth_if_whitelist, (char *) pci_addr))
751 if (c->vendor_id == 0x1af4 && c->device_id == 0x1000)
754 else if (c->vendor_id == 0x15ad && c->device_id == 0x07b0)
756 /* all Intel devices */
757 else if (c->vendor_id == 0x8086)
760 else if (c->vendor_id == 0x1137 && c->device_id == 0x0043)
763 else if (c->vendor_id == 0x1425 && (c->device_id & 0xe000) == 0x4000)
767 clib_warning ("Unsupported Ethernet PCI device 0x%04x:0x%04x found "
768 "at PCI address %s\n", (u16) c->vendor_id, (u16) c->device_id,
773 error = vlib_pci_bind_to_uio (d, (char *) dm->uio_driver_name);
777 if (!dm->eth_if_whitelist)
778 dm->eth_if_blacklist = format (dm->eth_if_blacklist, "%U ",
779 format_vlib_pci_addr, &d->bus_address);
780 clib_error_report (error);
787 get_node_free_hugepages_num (u32 node, u32 page_size)
792 tmp = format (0, "/sys/devices/system/node/node%u/hugepages/hugepages-%ukB/"
793 "free_hugepages%c", node, page_size, 0);
794 fp = fopen ((char *) tmp, "r");
802 vec_validate (buffer, 256-1);
803 if (fgets ((char *)buffer, 256, fp))
806 unformat_init_string (&in, (char *) buffer, strlen ((char *) buffer));
807 unformat(&in, "%u", &pages_avail);
818 static clib_error_t *
819 dpdk_config (vlib_main_t * vm, unformat_input_t * input)
821 clib_error_t * error = 0;
822 dpdk_main_t * dm = &dpdk_main;
823 vlib_thread_main_t * tm = vlib_get_thread_main();
826 u8 * rte_cmd = 0, * ethname = 0;
831 int rxrings, txrings, rxslots, txslots, txburst;
834 unformat_input_t _in;
835 unformat_input_t * in = &_in;
842 // MATT-FIXME: inverted virtio-vhost logic to use virtio by default
843 dm->use_virtio_vhost = 1;
845 while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
848 if (unformat (input, "no-hugetlb"))
850 vec_add1 (dm->eal_init_args, (u8 *) "no-huge");
854 else if (unformat (input, "enable-tcp-udp-checksum"))
856 dm->buffer_flags_template &=
857 ~(IP_BUFFER_L4_CHECKSUM_CORRECT | IP_BUFFER_L4_CHECKSUM_COMPUTED);
860 else if (unformat (input, "decimal-interface-names"))
861 dm->interface_name_format_decimal = 1;
863 else if (unformat (input, "no-multi-seg"))
864 dm->no_multi_seg = 1;
866 else if (unformat (input, "dev %s", &pci_dev_id))
868 if (dm->eth_if_whitelist)
871 * Don't add duplicate device id's.
873 if (strstr ((char *)dm->eth_if_whitelist, (char *)pci_dev_id))
876 _vec_len (dm->eth_if_whitelist) -= 1; // chomp trailing NULL.
877 dm->eth_if_whitelist = format (dm->eth_if_whitelist, " %s%c",
881 dm->eth_if_whitelist = format (0, "%s%c", pci_dev_id, 0);
885 else if (unformat(input, "netmap %s/%d:%d/%d:%d/%d",
886 &nmname, &rxrings, &rxslots, &txrings, &txslots, &txburst)) {
889 eth_nm_args(nmname, rxrings, rxslots, txrings, txslots, txburst);
891 error = clib_error_return (0, "%s", rv);
894 }else if (unformat(input, "netmap %s", &nmname)) {
897 eth_nm_args(nmname, 0, 0, 0, 0, 0);
899 error = clib_error_return (0, "%s", rv);
905 else if (unformat (input, "num-mbufs %d", &dm->num_mbufs))
907 else if (unformat (input, "max-tx-queues %d", &dm->max_tx_queues))
909 else if (unformat (input, "kni %d", &dm->num_kni))
911 else if (unformat (input, "uio-driver %s", &dm->uio_driver_name))
913 else if (unformat (input, "vhost-user-coalesce-frames %d", &dm->vhost_coalesce_frames))
915 else if (unformat (input, "vhost-user-coalesce-time %f", &dm->vhost_coalesce_time))
917 else if (unformat (input, "enable-vhost-user"))
918 dm->use_virtio_vhost = 0;
919 else if (unformat (input, "rss %d", &dm->use_rss))
923 else if (unformat(input, #a)) \
925 if (!strncmp(#a, "no-pci", 6)) \
927 tmp = format (0, "--%s%c", #a, 0); \
928 vec_add1 (dm->eal_init_args, tmp); \
930 foreach_eal_double_hyphen_predicate_arg
934 else if (unformat(input, #a " %s", &s)) \
936 if (!strncmp(#a, "huge-dir", 8)) \
938 else if (!strncmp(#a, "file-prefix", 11)) \
940 else if (!strncmp(#a, "socket-mem", 10)) \
941 socket_mem = vec_dup (s); \
942 tmp = format (0, "--%s%c", #a, 0); \
943 vec_add1 (dm->eal_init_args, tmp); \
945 vec_add1 (dm->eal_init_args, s); \
947 foreach_eal_double_hyphen_arg
951 else if (unformat(input, #a " %s", &s)) \
953 tmp = format (0, "-%s%c", #b, 0); \
954 vec_add1 (dm->eal_init_args, tmp); \
956 vec_add1 (dm->eal_init_args, s); \
958 foreach_eal_single_hyphen_arg
962 else if (unformat(input, #a " %s", &s)) \
964 tmp = format (0, "-%s%c", #b, 0); \
965 vec_add1 (dm->eal_init_args, tmp); \
967 vec_add1 (dm->eal_init_args, s); \
968 dm->a##_set_manually = 1; \
970 foreach_eal_single_hyphen_mandatory_arg
973 else if (unformat(input, "default"))
978 error = clib_error_return (0, "unknown input `%U'",
979 format_unformat_error, input);
984 if (!dm->uio_driver_name)
985 dm->uio_driver_name = format (0, "igb_uio");
988 * Use 1G huge pages if available.
990 if (!no_huge && !huge_dir)
992 uword * mem_by_socket = hash_create (0, sizeof (uword));
998 umount(DEFAULT_HUGE_DIR);
1000 /* Process "socket-mem" parameter value */
1001 if (vec_len (socket_mem))
1003 unformat_input_t in;
1004 unformat_init_vector(&in, socket_mem);
1005 unformat(&in, "%U", unformat_socket_mem, &mem_by_socket);
1011 /* check if available enough 1GB pages for each socket */
1012 clib_bitmap_foreach (c, tm->cpu_socket_bitmap, ({
1013 uword * p = hash_get (mem_by_socket, c);
1019 u32 pages_num_1g = mem / 1024;
1020 u32 pages_num_2m = mem / 2;
1023 pages_avail = get_node_free_hugepages_num(c, 1048576);
1024 if (!pages_avail || !(pages_avail >= pages_num_1g))
1027 pages_avail = get_node_free_hugepages_num(c, 2048);
1028 if (!pages_avail || !(pages_avail >= pages_num_2m))
1034 hash_free (mem_by_socket);
1036 rv = mkdir(VPP_RUN_DIR, 0755);
1037 if (rv && errno != EEXIST)
1039 error = clib_error_return (0, "mkdir '%s' failed errno %d",
1040 VPP_RUN_DIR, errno);
1044 rv = mkdir(DEFAULT_HUGE_DIR, 0755);
1045 if (rv && errno != EEXIST)
1047 error = clib_error_return (0, "mkdir '%s' failed errno %d",
1048 DEFAULT_HUGE_DIR, errno);
1054 rv = mount("none", DEFAULT_HUGE_DIR, "hugetlbfs", 0, "pagesize=1G");
1058 rv = mount("none", DEFAULT_HUGE_DIR, "hugetlbfs", 0, NULL);
1062 return clib_error_return (0, "not enough free huge pages");
1067 error = clib_error_return (0, "mount failed %d", errno);
1071 tmp = format (0, "--huge-dir%c", 0);
1072 vec_add1 (dm->eal_init_args, tmp);
1073 tmp = format (0, "%s%c", DEFAULT_HUGE_DIR, 0);
1074 vec_add1 (dm->eal_init_args, tmp);
1077 tmp = format (0, "--file-prefix%c", 0);
1078 vec_add1 (dm->eal_init_args, tmp);
1079 tmp = format (0, "vpp%c", 0);
1080 vec_add1 (dm->eal_init_args, tmp);
1090 /* I'll bet that -c and -n must be the first and second args... */
1091 if (!dm->coremask_set_manually)
1093 vlib_thread_registration_t * tr;
1094 uword * coremask = 0;
1097 /* main thread core */
1098 coremask = clib_bitmap_set(coremask, tm->main_lcore, 1);
1100 for (i = 0; i < vec_len (tm->registrations); i++)
1102 tr = tm->registrations[i];
1103 coremask = clib_bitmap_or(coremask, tr->coremask);
1106 vec_insert (dm->eal_init_args, 2, 1);
1107 dm->eal_init_args[1] = (u8 *) "-c";
1108 tmp = format (0, "%U%c", format_bitmap_hex, coremask, 0);
1109 dm->eal_init_args[2] = tmp;
1110 clib_bitmap_free(coremask);
1113 if (!dm->nchannels_set_manually)
1115 vec_insert (dm->eal_init_args, 2, 3);
1116 dm->eal_init_args[3] = (u8 *) "-n";
1117 tmp = format (0, "%d", dm->nchannels);
1118 dm->eal_init_args[4] = tmp;
1121 if (no_pci == 0 && geteuid() == 0)
1122 dpdk_bind_devices_to_uio(dm);
1125 * If there are whitelisted devices,
1126 * add the whitelist option & device list to the dpdk arg list...
1128 if (dm->eth_if_whitelist)
1130 unformat_init_string (in, (char *)dm->eth_if_whitelist,
1131 vec_len(dm->eth_if_whitelist) - 1);
1136 * Otherwise add the blacklisted devices to the dpdk arg list.
1140 unformat_init_string (in, (char *)dm->eth_if_blacklist,
1141 vec_len(dm->eth_if_blacklist) - 1);
1145 while (unformat_check_input (in) != UNFORMAT_END_OF_INPUT)
1147 tmp = format (0, fmt, 0);
1148 vec_add1 (dm->eal_init_args, tmp);
1149 unformat (in, "%s", &pci_dev_id);
1150 vec_add1 (dm->eal_init_args, pci_dev_id);
1153 /* set master-lcore */
1154 tmp = format (0, "--master-lcore%c", 0);
1155 vec_add1 (dm->eal_init_args, tmp);
1156 tmp = format (0, "%u%c", tm->main_lcore, 0);
1157 vec_add1 (dm->eal_init_args, tmp);
1159 /* NULL terminate the "argv" vector, in case of stupidity */
1160 vec_add1 (dm->eal_init_args, 0);
1161 _vec_len(dm->eal_init_args) -= 1;
1163 /* Set up DPDK eal and packet mbuf pool early. */
1165 log_level = (CLIB_DEBUG > 0) ? RTE_LOG_DEBUG : RTE_LOG_NOTICE;
1167 rte_set_log_level (log_level);
1171 /* make copy of args as rte_eal_init tends to mess up with arg array */
1172 for (i = 1; i < vec_len(dm->eal_init_args); i++)
1173 dm->eal_init_args_str = format(dm->eal_init_args_str, "%s ",
1174 dm->eal_init_args[i]);
1176 ret = rte_eal_init(vec_len(dm->eal_init_args), (char **) dm->eal_init_args);
1178 /* lazy umount hugepages */
1179 umount2(DEFAULT_HUGE_DIR, MNT_DETACH);
1182 return clib_error_return (0, "rte_eal_init returned %d", ret);
1184 /* Dump the physical memory layout prior to creating the mbuf_pool */
1185 fprintf(stdout, "DPDK physical memory layout:\n");
1186 rte_dump_physmem_layout(stdout);
1188 /* main thread 1st */
1189 error = vlib_buffer_pool_create(vm, dm->num_mbufs, rte_socket_id());
1193 for (i = 0; i < RTE_MAX_LCORE; i++)
1195 error = vlib_buffer_pool_create(vm, dm->num_mbufs,
1196 rte_lcore_to_socket_id(i));
1203 vlib_node_runtime_t * rt = vlib_node_get_runtime (vm, dpdk_input_node.index);
1204 rt->function = dpdk_input_rss;
1210 VLIB_CONFIG_FUNCTION (dpdk_config, "dpdk");
1212 void dpdk_update_link_state (dpdk_device_t * xd, f64 now)
1214 vnet_main_t * vnm = vnet_get_main();
1215 struct rte_eth_link prev_link = xd->link;
1217 u8 hw_flags_chg = 0;
1219 /* only update link state for PMD interfaces */
1220 if (xd->dev_type != VNET_DPDK_DEV_ETH)
1223 xd->time_last_link_update = now ? now : xd->time_last_link_update;
1224 memset(&xd->link, 0, sizeof(xd->link));
1225 rte_eth_link_get_nowait (xd->device_index, &xd->link);
1227 if (LINK_STATE_ELOGS)
1229 vlib_main_t * vm = vlib_get_main();
1230 ELOG_TYPE_DECLARE(e) = {
1232 "update-link-state: sw_if_index %d, admin_up %d,"
1233 "old link_state %d new link_state %d",
1234 .format_args = "i4i1i1i1",
1237 struct { u32 sw_if_index; u8 admin_up;
1238 u8 old_link_state; u8 new_link_state;} *ed;
1239 ed = ELOG_DATA (&vm->elog_main, e);
1240 ed->sw_if_index = xd->vlib_sw_if_index;
1241 ed->admin_up = xd->admin_up;
1242 ed->old_link_state = (u8)
1243 vnet_hw_interface_is_link_up (vnm, xd->vlib_hw_if_index);
1244 ed->new_link_state = (u8) xd->link.link_status;
1247 if ((xd->admin_up == 1) &&
1248 ((xd->link.link_status != 0) ^
1249 vnet_hw_interface_is_link_up (vnm, xd->vlib_hw_if_index)))
1252 hw_flags |= (xd->link.link_status ?
1253 VNET_HW_INTERFACE_FLAG_LINK_UP: 0);
1256 if (hw_flags_chg || (xd->link.link_duplex != prev_link.link_duplex))
1259 switch (xd->link.link_duplex)
1261 case ETH_LINK_HALF_DUPLEX:
1262 hw_flags |= VNET_HW_INTERFACE_FLAG_HALF_DUPLEX;
1264 case ETH_LINK_FULL_DUPLEX:
1265 hw_flags |= VNET_HW_INTERFACE_FLAG_FULL_DUPLEX;
1271 #if RTE_VERSION >= RTE_VERSION_NUM(16, 4, 0, 0)
1272 if (hw_flags_chg || (xd->link.link_speed != prev_link.link_speed))
1275 switch (xd->link.link_speed)
1277 case ETH_SPEED_NUM_10M:
1278 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10M;
1280 case ETH_SPEED_NUM_100M:
1281 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
1283 case ETH_SPEED_NUM_1G:
1284 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
1286 case ETH_SPEED_NUM_10G:
1287 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
1289 case ETH_SPEED_NUM_40G:
1290 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
1295 clib_warning("unknown link speed %d", xd->link.link_speed);
1300 if (hw_flags_chg || (xd->link.link_speed != prev_link.link_speed))
1303 switch (xd->link.link_speed)
1305 case ETH_LINK_SPEED_10:
1306 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10M;
1308 case ETH_LINK_SPEED_100:
1309 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
1311 case ETH_LINK_SPEED_1000:
1312 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
1314 case ETH_LINK_SPEED_10000:
1315 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
1317 case ETH_LINK_SPEED_40G:
1318 hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
1323 clib_warning("unknown link speed %d", xd->link.link_speed);
1330 if (LINK_STATE_ELOGS)
1332 vlib_main_t * vm = vlib_get_main();
1334 ELOG_TYPE_DECLARE(e) = {
1335 .format = "update-link-state: sw_if_index %d, new flags %d",
1336 .format_args = "i4i4",
1339 struct { u32 sw_if_index; u32 flags; } *ed;
1340 ed = ELOG_DATA (&vm->elog_main, e);
1341 ed->sw_if_index = xd->vlib_sw_if_index;
1342 ed->flags = hw_flags;
1344 vnet_hw_interface_set_flags (vnm, xd->vlib_hw_if_index, hw_flags);
1349 dpdk_process (vlib_main_t * vm,
1350 vlib_node_runtime_t * rt,
1353 clib_error_t * error;
1354 vnet_main_t * vnm = vnet_get_main();
1355 dpdk_main_t * dm = &dpdk_main;
1356 ethernet_main_t * em = ðernet_main;
1358 vlib_thread_main_t * tm = vlib_get_thread_main();
1362 error = dpdk_lib_init (dm);
1365 * Turn on the input node if we found some devices to drive
1366 * and we're not running worker threads or i/o threads
1369 if (error == 0 && vec_len(dm->devices) > 0)
1371 if (tm->n_vlib_mains == 1)
1372 vlib_node_set_state (vm, dpdk_input_node.index,
1373 VLIB_NODE_STATE_POLLING);
1374 else if (tm->main_thread_is_io_node)
1375 vlib_node_set_state (vm, dpdk_io_input_node.index,
1376 VLIB_NODE_STATE_POLLING);
1377 else if (!dm->have_io_threads)
1378 for (i=0; i < tm->n_vlib_mains; i++)
1379 if (vec_len(dm->devices_by_cpu[i]) > 0)
1380 vlib_node_set_state (vlib_mains[i], dpdk_input_node.index,
1381 VLIB_NODE_STATE_POLLING);
1385 clib_error_report (error);
1387 dpdk_vhost_user_process_init(&vu_state);
1389 dm->io_thread_release = 1;
1391 f64 now = vlib_time_now (vm);
1392 vec_foreach (xd, dm->devices)
1394 dpdk_update_link_state (xd, now);
1397 { // Setup MACs for bond interfaces and their links which was initialized in
1398 // dpdk_port_setup() but needs to be done again here to take effect.
1399 int nports = rte_eth_dev_count();
1401 for (i = 0; i < nports; i++) {
1402 struct rte_eth_dev_info dev_info;
1403 rte_eth_dev_info_get(i, &dev_info);
1404 if (!dev_info.driver_name)
1405 dev_info.driver_name = dev_info.pci_dev->driver->name;
1406 ASSERT(dev_info.driver_name);
1407 if (strncmp(dev_info.driver_name, "rte_bond_pmd", 12) == 0) {
1410 int nlink = rte_eth_bond_slaves_get(i, slink, 16);
1412 vnet_hw_interface_t * bhi;
1413 ethernet_interface_t * bei;
1414 /* Get MAC of 1st slave link */
1415 rte_eth_macaddr_get(slink[0], (struct ether_addr *)addr);
1416 /* Set MAC of bounded interface to that of 1st slave link */
1417 rte_eth_bond_mac_address_set(i, (struct ether_addr *)addr);
1418 /* Populate MAC of bonded interface in VPP hw tables */
1419 bhi = vnet_get_hw_interface(
1420 vnm, dm->devices[i].vlib_hw_if_index);
1421 bei = pool_elt_at_index(em->interfaces, bhi->hw_instance);
1422 memcpy(bhi->hw_address, addr, 6);
1423 memcpy(bei->address, addr, 6);
1424 while (nlink >= 1) { /* for all slave links */
1425 int slave = slink[--nlink];
1426 dpdk_device_t * sdev = &dm->devices[slave];
1427 vnet_hw_interface_t * shi;
1428 vnet_sw_interface_t * ssi;
1429 /* Add MAC to all slave links except the first one */
1430 if (nlink) rte_eth_dev_mac_addr_add(
1431 slave, (struct ether_addr *)addr, 0);
1432 /* Set slaves bitmap for bonded interface */
1433 bhi->bond_info = clib_bitmap_set(
1434 bhi->bond_info, sdev->vlib_hw_if_index, 1);
1435 /* Set slave link flags on slave interface */
1436 shi = vnet_get_hw_interface(vnm, sdev->vlib_hw_if_index);
1437 ssi = vnet_get_sw_interface(vnm, sdev->vlib_sw_if_index);
1438 shi->bond_info = VNET_HW_INTERFACE_BOND_INFO_SLAVE;
1439 ssi->flags |= VNET_SW_INTERFACE_FLAG_BOND_SLAVE;
1450 * check each time through the loop in case intervals are changed
1452 f64 min_wait = dm->link_state_poll_interval < dm->stat_poll_interval ?
1453 dm->link_state_poll_interval : dm->stat_poll_interval;
1455 vlib_process_wait_for_event_or_clock (vm, min_wait);
1457 if (dpdk_get_admin_up_down_in_progress())
1458 /* skip the poll if an admin up down is in progress (on any interface) */
1461 vec_foreach (xd, dm->devices)
1463 f64 now = vlib_time_now (vm);
1464 if ((now - xd->time_last_stats_update) >= dm->stat_poll_interval)
1465 dpdk_update_counters (xd, now);
1466 if ((now - xd->time_last_link_update) >= dm->link_state_poll_interval)
1467 dpdk_update_link_state (xd, now);
1469 if (xd->dev_type == VNET_DPDK_DEV_VHOST_USER)
1470 if (dpdk_vhost_user_process_if(vm, xd, vu_state) != 0)
1475 dpdk_vhost_user_process_cleanup(vu_state);
1480 VLIB_REGISTER_NODE (dpdk_process_node,static) = {
1481 .function = dpdk_process,
1482 .type = VLIB_NODE_TYPE_PROCESS,
1483 .name = "dpdk-process",
1484 .process_log2_n_stack_bytes = 17,
1487 int dpdk_set_stat_poll_interval (f64 interval)
1489 if (interval < DPDK_MIN_STATS_POLL_INTERVAL)
1490 return (VNET_API_ERROR_INVALID_VALUE);
1492 dpdk_main.stat_poll_interval = interval;
1497 int dpdk_set_link_state_poll_interval (f64 interval)
1499 if (interval < DPDK_MIN_LINK_POLL_INTERVAL)
1500 return (VNET_API_ERROR_INVALID_VALUE);
1502 dpdk_main.link_state_poll_interval = interval;
1508 dpdk_init (vlib_main_t * vm)
1510 dpdk_main_t * dm = &dpdk_main;
1512 clib_error_t * error = 0;
1513 vlib_thread_main_t * tm = vlib_get_thread_main();
1515 /* verify that structs are cacheline aligned */
1516 ASSERT(offsetof(dpdk_device_t, cacheline0) == 0);
1517 ASSERT(offsetof(dpdk_device_t, cacheline1) == CLIB_CACHE_LINE_BYTES);
1518 ASSERT(offsetof(dpdk_worker_t, cacheline0) == 0);
1519 ASSERT(offsetof(frame_queue_trace_t, cacheline0) == 0);
1522 dm->vnet_main = vnet_get_main();
1524 ei = vlib_get_node_by_name (vm, (u8 *) "ethernet-input");
1526 return clib_error_return (0, "ethernet-input node AWOL");
1528 dm->ethernet_input_node_index = ei->index;
1531 dm->num_mbufs = dm->num_mbufs ? dm->num_mbufs : NB_MBUF;
1532 vec_add1 (dm->eal_init_args, (u8 *) "vnet");
1534 dm->dpdk_device_by_kni_port_id = hash_create (0, sizeof (uword));
1535 dm->vu_sw_if_index_by_listener_fd = hash_create (0, sizeof (uword));
1536 dm->vu_sw_if_index_by_sock_fd = hash_create (0, sizeof (uword));
1538 /* $$$ use n_thread_stacks since it's known-good at this point */
1539 vec_validate (dm->recycle, tm->n_thread_stacks - 1);
1541 /* initialize EFD (early fast discard) default settings */
1542 dm->efd.enabled = DPDK_EFD_DISABLED;
1543 dm->efd.queue_hi_thresh = ((DPDK_EFD_DEFAULT_DEVICE_QUEUE_HI_THRESH_PCT *
1544 DPDK_NB_RX_DESC_10GE)/100);
1545 dm->efd.consec_full_frames_hi_thresh =
1546 DPDK_EFD_DEFAULT_CONSEC_FULL_FRAMES_HI_THRESH;
1548 /* vhost-user coalescence frames defaults */
1549 dm->vhost_coalesce_frames = 32;
1550 dm->vhost_coalesce_time = 1e-3;
1552 /* Default vlib_buffer_t flags, DISABLES tcp/udp checksumming... */
1553 dm->buffer_flags_template =
1554 (VLIB_BUFFER_TOTAL_LENGTH_VALID
1555 | IP_BUFFER_L4_CHECKSUM_COMPUTED
1556 | IP_BUFFER_L4_CHECKSUM_CORRECT);
1558 dm->stat_poll_interval = DPDK_STATS_POLL_INTERVAL;
1559 dm->link_state_poll_interval = DPDK_LINK_POLL_INTERVAL;
1562 if ((error = vlib_call_init_function (vm, dpdk_cli_init)))
1568 VLIB_INIT_FUNCTION (dpdk_init);