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>
20 #include <vppinfra/linux/sysfs.h>
21 #include <vlib/unix/unix.h>
24 #include <vnet/vnet.h>
25 #include <vnet/ethernet/ethernet.h>
26 #include <vnet/interface/rx_queue_funcs.h>
27 #include <dpdk/buffer.h>
28 #include <dpdk/device/dpdk.h>
29 #include <dpdk/cryptodev/cryptodev.h>
30 #include <vlib/pci/pci.h>
31 #include <vlib/vmbus/vmbus.h>
40 #include <sys/mount.h>
45 #include <dpdk/device/dpdk_priv.h>
47 dpdk_main_t dpdk_main;
48 dpdk_config_main_t dpdk_config_main;
50 #define LINK_STATE_ELOGS 0
52 /* dev_info.speed_capa -> interface name mapppings */
57 } if_name_prefixes[] = {
58 /* sorted, higher speed first */
59 { ETH_LINK_SPEED_200G, "TwoHundredGigabitEthernet" },
60 { ETH_LINK_SPEED_100G, "HundredGigabitEthernet" },
61 { ETH_LINK_SPEED_56G, "FiftySixGigabitEthernet" },
62 { ETH_LINK_SPEED_50G, "FiftyGigabitEthernet" },
63 { ETH_LINK_SPEED_40G, "FortyGigabitEthernet" },
64 { ETH_LINK_SPEED_25G, "TwentyFiveGigabitEthernet" },
65 { ETH_LINK_SPEED_20G, "TwentyGigabitEthernet" },
66 { ETH_LINK_SPEED_10G, "TenGigabitEthernet" },
67 { ETH_LINK_SPEED_5G, "FiveGigabitEthernet" },
68 { ETH_LINK_SPEED_2_5G, "TwoDotFiveGigabitEthernet" },
69 { ETH_LINK_SPEED_1G, "GigabitEthernet" },
73 dpdk_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hi,
76 dpdk_main_t *dm = &dpdk_main;
77 dpdk_device_t *xd = vec_elt_at_index (dm->devices, hi->dev_instance);
81 mtu = frame_size - xd->driver_frame_overhead;
83 rv = rte_eth_dev_set_mtu (xd->port_id, mtu);
87 dpdk_log_err ("[%u] rte_eth_dev_set_mtu failed (mtu %u, rv %d)",
88 xd->port_id, mtu, rv);
92 return vnet_error (VNET_ERR_UNSUPPORTED,
93 "dpdk driver doesn't support MTU change");
95 return vnet_error (VNET_ERR_BUSY, "port is running");
97 return vnet_error (VNET_ERR_INVALID_VALUE, "invalid MTU");
99 return vnet_error (VNET_ERR_BUG,
100 "unexpected return value %d returned from "
101 "rte_eth_dev_set_mtu(...)",
106 dpdk_log_debug ("[%u] max_frame_size set to %u by setting MTU to %u",
107 xd->port_id, frame_size, mtu);
113 dpdk_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags)
115 dpdk_main_t *dm = &dpdk_main;
116 dpdk_device_t *xd = vec_elt_at_index (dm->devices, hi->dev_instance);
117 u32 old = (xd->flags & DPDK_DEVICE_FLAG_PROMISC) != 0;
121 case ETHERNET_INTERFACE_FLAG_DEFAULT_L3:
122 /* set to L3/non-promisc mode */
123 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_PROMISC, 0);
125 case ETHERNET_INTERFACE_FLAG_ACCEPT_ALL:
126 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_PROMISC, 1);
132 if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
134 if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
135 rte_eth_promiscuous_enable (xd->port_id);
137 rte_eth_promiscuous_disable (xd->port_id);
143 /* The function check_l3cache helps check if Level 3 cache exists or not on current CPUs
144 return value 1: exist.
145 return value 0: not exist.
153 const char *sys_cache_dir = "/sys/devices/system/cpu/cpu0/cache";
154 DIR *dir_cache = opendir (sys_cache_dir);
156 if (dir_cache == NULL)
159 while ((dp = readdir (dir_cache)) != NULL)
161 if (dp->d_type == DT_DIR)
164 int level_cache = -1;
166 p = format (p, "%s/%s/%s%c", sys_cache_dir, dp->d_name, "level", 0);
167 if ((err = clib_sysfs_read ((char *) p, "%d", &level_cache)))
168 clib_error_free (err);
170 if (level_cache == 3)
172 closedir (dir_cache);
178 if (dir_cache != NULL)
179 closedir (dir_cache);
184 static dpdk_device_config_t *
185 dpdk_find_startup_config (struct rte_eth_dev_info *di)
187 dpdk_main_t *dm = &dpdk_main;
188 struct rte_pci_device *pci_dev;
189 struct rte_vmbus_device *vmbus_dev;
190 vlib_pci_addr_t pci_addr;
191 vlib_vmbus_addr_t vmbus_addr;
194 if ((pci_dev = dpdk_get_pci_device (di)))
196 pci_addr.domain = pci_dev->addr.domain;
197 pci_addr.bus = pci_dev->addr.bus;
198 pci_addr.slot = pci_dev->addr.devid;
199 pci_addr.function = pci_dev->addr.function;
201 hash_get (dm->conf->device_config_index_by_pci_addr, pci_addr.as_u32);
204 if ((vmbus_dev = dpdk_get_vmbus_device (di)))
206 unformat_input_t input_vmbus;
207 unformat_init_string (&input_vmbus, di->device->name,
208 strlen (di->device->name));
209 if (unformat (&input_vmbus, "%U", unformat_vlib_vmbus_addr, &vmbus_addr))
210 p = mhash_get (&dm->conf->device_config_index_by_vmbus_addr,
212 unformat_free (&input_vmbus);
216 return pool_elt_at_index (dm->conf->dev_confs, p[0]);
217 return &dm->conf->default_devconf;
220 static clib_error_t *
221 dpdk_lib_init (dpdk_main_t * dm)
223 vnet_main_t *vnm = vnet_get_main ();
225 vlib_thread_main_t *tm = vlib_get_thread_main ();
226 vnet_device_main_t *vdm = &vnet_device_main;
227 vnet_sw_interface_t *sw;
228 vnet_hw_interface_t *hi;
232 /* vlib_buffer_t template */
233 vec_validate_aligned (dm->per_thread_data, tm->n_vlib_mains - 1,
234 CLIB_CACHE_LINE_BYTES);
235 for (int i = 0; i < tm->n_vlib_mains; i++)
237 dpdk_per_thread_data_t *ptd = vec_elt_at_index (dm->per_thread_data, i);
238 clib_memset (&ptd->buffer_template, 0, sizeof (vlib_buffer_t));
239 vnet_buffer (&ptd->buffer_template)->sw_if_index[VLIB_TX] = (u32) ~ 0;
243 dm->conf->interface_name_format_decimal ? "%d/%d/%d" : "%x/%x/%x";
245 /* device config defaults */
246 dm->default_port_conf.n_rx_desc = DPDK_NB_RX_DESC_DEFAULT;
247 dm->default_port_conf.n_tx_desc = DPDK_NB_TX_DESC_DEFAULT;
248 dm->default_port_conf.n_rx_queues = 1;
249 dm->default_port_conf.n_tx_queues = tm->n_vlib_mains;
250 dm->default_port_conf.rss_hf = ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP;
251 dm->default_port_conf.max_lro_pkt_size = DPDK_MAX_LRO_SIZE_DEFAULT;
253 if ((clib_mem_get_default_hugepage_size () == 2 << 20) &&
254 check_l3cache () == 0)
255 dm->default_port_conf.n_rx_desc = dm->default_port_conf.n_tx_desc = 512;
257 RTE_ETH_FOREACH_DEV (port_id)
261 struct rte_eth_dev_info di;
262 dpdk_device_config_t *devconf = 0;
263 vnet_eth_interface_registration_t eir = {};
266 if (!rte_eth_dev_is_valid_port (port_id))
269 if ((rv = rte_eth_dev_info_get (port_id, &di)) != 0)
271 dpdk_log_warn ("[%u] failed to get device info. skipping device.",
278 dpdk_log_warn ("[%u] missing device info. Skipping '%s' device",
279 port_id, di.driver_name);
283 devconf = dpdk_find_startup_config (&di);
285 /* If device is blacklisted, we should skip it */
286 if (devconf->is_blacklisted)
288 dpdk_log_notice ("[%d] Device %s blacklisted. Skipping...", port_id,
293 vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
294 xd->port_id = port_id;
295 xd->device_index = xd - dm->devices;
296 xd->per_interface_next_index = ~0;
298 clib_memcpy (&xd->conf, &dm->default_port_conf,
299 sizeof (dpdk_port_conf_t));
301 /* find driver datea for this PMD */
302 if ((dr = dpdk_driver_find (di.driver_name, &xd->if_desc)))
305 xd->supported_flow_actions = dr->supported_flow_actions;
306 xd->conf.disable_rss = dr->mq_mode_none;
307 xd->conf.disable_rx_scatter = dr->disable_rx_scatter;
308 xd->conf.enable_rxq_int = dr->enable_rxq_int;
309 if (dr->use_intel_phdr_cksum)
310 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM, 1);
311 if (dr->int_unmaskable)
312 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_INT_UNMASKABLE, 1);
315 dpdk_log_warn ("[%u] unknown driver '%s'", port_id, di.driver_name);
319 xd->name = devconf->name;
323 struct rte_pci_device *pci_dev;
324 if (dr && dr->interface_name_prefix)
326 /* prefix override by driver */
327 xd->name = format (xd->name, "%s", dr->interface_name_prefix);
331 /* interface name prefix from speed_capa */
332 u64 mask = ~((if_name_prefixes[0].link_speed << 1) - 1);
334 if (di.speed_capa & mask)
335 dpdk_log_warn ("[%u] unknown speed capability 0x%x reported",
336 xd->port_id, di.speed_capa & mask);
338 for (int i = 0; i < ARRAY_LEN (if_name_prefixes); i++)
339 if (if_name_prefixes[i].link_speed & di.speed_capa)
342 format (xd->name, "%s", if_name_prefixes[i].pfx);
346 xd->name = format (xd->name, "Ethernet");
349 if (dr && dr->interface_number_from_port_id)
350 xd->name = format (xd->name, "%u", port_id);
351 else if ((pci_dev = dpdk_get_pci_device (&di)))
352 xd->name = format (xd->name, if_num_fmt, pci_dev->addr.bus,
353 pci_dev->addr.devid, pci_dev->addr.function);
355 xd->name = format (xd->name, "%u", port_id);
358 /* Handle representor devices that share the same PCI ID */
359 if ((di.switch_info.domain_id != RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) &&
360 (di.switch_info.port_id != (uint16_t) -1))
361 xd->name = format (xd->name, "/%d", di.switch_info.port_id);
363 /* number of RX and TX queues */
364 if (devconf->num_tx_queues > 0)
366 if (di.max_tx_queues < devconf->num_tx_queues)
367 dpdk_log_warn ("[%u] Configured number of TX queues (%u) is "
368 "bigger than maximum supported (%u)",
369 port_id, devconf->num_tx_queues, di.max_tx_queues);
370 xd->conf.n_tx_queues = devconf->num_tx_queues;
373 xd->conf.n_tx_queues = clib_min (di.max_tx_queues, xd->conf.n_tx_queues);
375 if (devconf->num_rx_queues > 1 &&
376 di.max_rx_queues >= devconf->num_rx_queues)
378 xd->conf.n_rx_queues = devconf->num_rx_queues;
381 u64 unsupported_bits;
382 xd->conf.rss_hf = devconf->rss_fn;
383 unsupported_bits = xd->conf.rss_hf;
384 unsupported_bits &= ~di.flow_type_rss_offloads;
385 if (unsupported_bits)
386 dpdk_log_warn ("Unsupported RSS hash functions: %U",
387 format_dpdk_rss_hf_name, unsupported_bits);
389 xd->conf.rss_hf &= di.flow_type_rss_offloads;
390 dpdk_log_debug ("[%u] rss_hf: %U", port_id, format_dpdk_rss_hf_name,
394 #ifndef RTE_VLAN_HLEN
395 #define RTE_VLAN_HLEN 4
397 xd->driver_frame_overhead =
398 RTE_ETHER_HDR_LEN + 2 * RTE_VLAN_HLEN + RTE_ETHER_CRC_LEN;
399 #if RTE_VERSION >= RTE_VERSION_NUM(21, 11, 0, 0)
400 q = di.max_rx_pktlen - di.max_mtu;
402 /* attempt to protect from bogus value provided by pmd */
403 if (q < (2 * xd->driver_frame_overhead) && q > 0)
404 xd->driver_frame_overhead = q;
405 dpdk_log_debug ("[%u] min_mtu: %u, max_mtu: %u, min_rx_bufsize: %u, "
406 "max_rx_pktlen: %u, max_lro_pkt_size: %u",
407 xd->port_id, di.min_mtu, di.max_mtu, di.min_rx_bufsize,
408 di.max_rx_pktlen, di.max_lro_pkt_size);
410 dpdk_log_debug ("[%u] driver frame overhead is %u", port_id,
411 xd->driver_frame_overhead);
413 /* number of RX and TX tescriptors */
414 if (devconf->num_rx_desc)
415 xd->conf.n_rx_desc = devconf->num_rx_desc;
416 else if (dr && dr->n_rx_desc)
417 xd->conf.n_rx_desc = dr->n_rx_desc;
419 if (devconf->num_tx_desc)
420 xd->conf.n_tx_desc = devconf->num_tx_desc;
421 else if (dr && dr->n_tx_desc)
422 xd->conf.n_tx_desc = dr->n_tx_desc;
425 "[%u] n_rx_queues: %u n_tx_queues: %u n_rx_desc: %u n_tx_desc: %u",
426 port_id, xd->conf.n_rx_queues, xd->conf.n_tx_queues,
427 xd->conf.n_rx_desc, xd->conf.n_tx_desc);
429 vec_validate_aligned (xd->rx_queues, xd->conf.n_rx_queues - 1,
430 CLIB_CACHE_LINE_BYTES);
432 rte_eth_macaddr_get (port_id, (void *) addr);
434 /* create interface */
435 eir.dev_class_index = dpdk_device_class.index;
436 eir.dev_instance = xd->device_index;
438 eir.cb.flag_change = dpdk_flag_change;
439 eir.cb.set_max_frame_size = dpdk_set_max_frame_size;
440 xd->hw_if_index = vnet_eth_register_interface (vnm, &eir);
441 hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
442 hi->numa_node = xd->cpu_socket = (i8) rte_eth_dev_socket_id (port_id);
443 sw = vnet_get_hw_sw_interface (vnm, xd->hw_if_index);
444 xd->sw_if_index = sw->sw_if_index;
445 dpdk_log_debug ("[%u] interface %s created", port_id, hi->name);
447 ethernet_set_flags (vnm, xd->hw_if_index,
448 ETHERNET_INTERFACE_FLAG_DEFAULT_L3);
450 /* assign worker threads */
451 vnet_hw_if_set_input_node (vnm, xd->hw_if_index, dpdk_input_node.index);
452 if (devconf->workers)
456 clib_bitmap_foreach (j, devconf->workers)
458 dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, q);
459 rxq->queue_index = vnet_hw_if_register_rx_queue (
460 vnm, xd->hw_if_index, q++, vdm->first_worker_thread_index + j);
464 for (q = 0; q < xd->conf.n_rx_queues; q++)
466 dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, q);
467 rxq->queue_index = vnet_hw_if_register_rx_queue (
468 vnm, xd->hw_if_index, q, VNET_HW_IF_RXQ_THREAD_ANY);
471 if (devconf->tso == DPDK_DEVICE_TSO_ON)
473 /*tcp_udp checksum must be enabled*/
474 if (xd->conf.enable_tcp_udp_checksum == 0)
475 dpdk_log_warn ("[%u] TCP/UDP checksum offload must be enabled",
477 else if ((di.tx_offload_capa & DEV_TX_OFFLOAD_TCP_TSO) == 0)
478 dpdk_log_warn ("[%u] TSO not supported by device", xd->port_id);
480 xd->conf.enable_tso = 1;
483 if (devconf->max_lro_pkt_size)
484 xd->conf.max_lro_pkt_size = devconf->max_lro_pkt_size;
486 dpdk_device_setup (xd);
488 /* rss queues should be configured after dpdk_device_setup() */
489 if (devconf->rss_queues)
491 if (vnet_hw_interface_set_rss_queues (vnet_get_main (), hi,
492 devconf->rss_queues))
493 dpdk_log_warn ("[%u] Failed to set rss queues", port_id);
496 if (vec_len (xd->errors))
497 dpdk_log_err ("[%u] setup failed Errors:\n %U", port_id,
498 format_dpdk_device_errors, xd);
501 for (int i = 0; i < vec_len (dm->devices); i++)
502 vnet_hw_if_update_runtime_data (vnm, dm->devices[i].hw_if_index);
508 dpdk_bind_devices_to_uio (dpdk_config_main_t * conf)
510 vlib_main_t *vm = vlib_get_main ();
513 int num_whitelisted = vec_len (conf->dev_confs);
514 vlib_pci_device_info_t *d = 0;
515 vlib_pci_addr_t *addr = 0, *addrs;
518 addrs = vlib_pci_get_all_dev_addrs ();
520 vec_foreach (addr, addrs)
522 dpdk_device_config_t * devconf = 0;
523 vec_reset_length (pci_addr);
524 pci_addr = format (pci_addr, "%U%c", format_vlib_pci_addr, addr, 0);
527 vlib_pci_free_device_info (d);
530 d = vlib_pci_get_device_info (vm, addr, &error);
533 vlib_log_warn (dpdk_main.log_default, "%U", format_clib_error, error);
534 clib_error_free (error);
538 if (d->device_class != PCI_CLASS_NETWORK_ETHERNET && d->device_class != PCI_CLASS_PROCESSOR_CO)
543 uword * p = hash_get (conf->device_config_index_by_pci_addr, addr->as_u32);
551 devconf = pool_elt_at_index (conf->dev_confs, p[0]);
554 /* Enforce Device blacklist by vendor and device */
555 for (i = 0; i < vec_len (conf->blacklist_by_pci_vendor_and_device); i++)
558 vendor = (u16)(conf->blacklist_by_pci_vendor_and_device[i] >> 16);
559 device = (u16)(conf->blacklist_by_pci_vendor_and_device[i] & 0xFFFF);
560 if (d->vendor_id == vendor && d->device_id == device)
563 * Expected case: device isn't whitelisted,
568 /* Device is blacklisted */
569 pool_get (conf->dev_confs, devconf);
570 hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
571 devconf - conf->dev_confs);
572 devconf->pci_addr.as_u32 = addr->as_u32;
573 devconf->dev_addr_type = VNET_DEV_ADDR_PCI;
574 devconf->is_blacklisted = 1;
577 else /* explicitly whitelisted, ignore the device blacklist */
583 if (d->vendor_id == 0x1af4 &&
584 (d->device_id == VIRTIO_PCI_LEGACY_DEVICEID_NET ||
585 d->device_id == VIRTIO_PCI_MODERN_DEVICEID_NET))
588 else if (d->vendor_id == 0x15ad && d->device_id == 0x07b0)
591 * For vmxnet3 PCI, unless it is explicitly specified in the whitelist,
592 * the default is to put it in the blacklist.
596 pool_get (conf->dev_confs, devconf);
597 hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
598 devconf - conf->dev_confs);
599 devconf->pci_addr.as_u32 = addr->as_u32;
600 devconf->is_blacklisted = 1;
603 /* all Intel network devices */
604 else if (d->vendor_id == 0x8086 && d->device_class == PCI_CLASS_NETWORK_ETHERNET)
606 /* all Intel QAT devices VFs */
607 else if (d->vendor_id == 0x8086 && d->device_class == PCI_CLASS_PROCESSOR_CO &&
608 (d->device_id == 0x0443 || d->device_id == 0x18a1 || d->device_id == 0x19e3 ||
609 d->device_id == 0x37c9 || d->device_id == 0x6f55))
612 else if (d->vendor_id == 0x1137 &&
613 (d->device_id == 0x0043 || d->device_id == 0x0071))
616 else if (d->vendor_id == 0x1425 && (d->device_id & 0xe000) == 0x4000)
618 /* Amazon Elastic Network Adapter */
619 else if (d->vendor_id == 0x1d0f && d->device_id >= 0xec20 && d->device_id <= 0xec21)
621 /* Cavium Network Adapter */
622 else if (d->vendor_id == 0x177d && d->device_id == 0x9712)
624 /* Cavium FastlinQ QL41000 Series */
625 else if (d->vendor_id == 0x1077 && d->device_id >= 0x8070 && d->device_id <= 0x8090)
627 /* Mellanox CX3, CX3VF */
628 else if (d->vendor_id == 0x15b3 && d->device_id >= 0x1003 && d->device_id <= 0x1004)
632 /* Mellanox CX4, CX4VF, CX4LX, CX4LXVF, CX5, CX5VF, CX5EX, CX5EXVF */
633 else if (d->vendor_id == 0x15b3 && d->device_id >= 0x1013 && d->device_id <= 0x101a)
637 /* Mellanox CX6, CX6VF, CX6DX, CX6DXVF */
638 else if (d->vendor_id == 0x15b3 && d->device_id >= 0x101b && d->device_id <= 0x101e)
642 /* Broadcom NetXtreme S, and E series only */
643 else if (d->vendor_id == 0x14e4 &&
644 ((d->device_id >= 0x16c0 &&
645 d->device_id != 0x16c6 && d->device_id != 0x16c7 &&
646 d->device_id != 0x16dd && d->device_id != 0x16f7 &&
647 d->device_id != 0x16fd && d->device_id != 0x16fe &&
648 d->device_id != 0x170d && d->device_id != 0x170c &&
649 d->device_id != 0x170e && d->device_id != 0x1712 &&
650 d->device_id != 0x1713) ||
651 (d->device_id == 0x1604 || d->device_id == 0x1605 ||
652 d->device_id == 0x1614 || d->device_id == 0x1606 ||
653 d->device_id == 0x1609 || d->device_id == 0x1614)))
657 dpdk_log_warn ("Unsupported PCI device 0x%04x:0x%04x found "
658 "at PCI address %s\n", (u16) d->vendor_id, (u16) d->device_id,
663 error = vlib_pci_bind_to_uio (vm, addr, (char *) conf->uio_driver_name);
669 pool_get (conf->dev_confs, devconf);
670 hash_set (conf->device_config_index_by_pci_addr, addr->as_u32,
671 devconf - conf->dev_confs);
672 devconf->pci_addr.as_u32 = addr->as_u32;
674 devconf->dev_addr_type = VNET_DEV_ADDR_PCI;
675 devconf->is_blacklisted = 1;
676 clib_error_report (error);
681 vlib_pci_free_device_info (d);
685 dpdk_bind_vmbus_devices_to_uio (dpdk_config_main_t * conf)
688 vlib_vmbus_addr_t *addrs, *addr = 0;
689 int num_whitelisted = vec_len (conf->dev_confs);
692 addrs = vlib_vmbus_get_all_dev_addrs ();
695 vec_foreach (addr, addrs)
697 dpdk_device_config_t *devconf = 0;
701 mhash_get (&conf->device_config_index_by_vmbus_addr, addr);
704 /* No devices blacklisted, but have whitelisted. blacklist all
706 pool_get (conf->dev_confs, devconf);
707 mhash_set (&conf->device_config_index_by_vmbus_addr, addr,
708 devconf - conf->dev_confs, 0);
709 devconf->vmbus_addr = *addr;
710 devconf->dev_addr_type = VNET_DEV_ADDR_VMBUS;
711 devconf->is_blacklisted = 1;
716 devconf = pool_elt_at_index (conf->dev_confs, p[0]);
719 /* Enforce Device blacklist by vmbus_addr */
720 for (i = 0; i < vec_len (conf->blacklist_by_vmbus_addr); i++)
722 vlib_vmbus_addr_t *a1 = &conf->blacklist_by_vmbus_addr[i];
723 vlib_vmbus_addr_t *a2 = addr;
724 if (memcmp (a1, a2, sizeof (vlib_vmbus_addr_t)) == 0)
728 /* Device not whitelisted */
729 pool_get (conf->dev_confs, devconf);
730 mhash_set (&conf->device_config_index_by_vmbus_addr, addr,
731 devconf - conf->dev_confs, 0);
732 devconf->vmbus_addr = *addr;
733 devconf->dev_addr_type = VNET_DEV_ADDR_VMBUS;
734 devconf->is_blacklisted = 1;
744 error = vlib_vmbus_bind_to_uio (addr);
749 pool_get (conf->dev_confs, devconf);
750 mhash_set (&conf->device_config_index_by_vmbus_addr, addr,
751 devconf - conf->dev_confs, 0);
752 devconf->vmbus_addr = *addr;
754 devconf->dev_addr_type = VNET_DEV_ADDR_VMBUS;
755 devconf->is_blacklisted = 1;
756 clib_error_report (error);
763 unformat_max_simd_bitwidth (unformat_input_t *input, va_list *va)
765 uword *max_simd_bitwidth = va_arg (*va, uword *);
767 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
769 if (!unformat (input, "%u", max_simd_bitwidth))
772 if (*max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_256 &&
773 *max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_512)
781 static clib_error_t *
782 dpdk_device_config (dpdk_config_main_t *conf, void *addr,
783 dpdk_device_addr_type_t addr_type, unformat_input_t *input,
786 clib_error_t *error = 0;
788 dpdk_device_config_t *devconf = 0;
789 unformat_input_t sub_input;
793 devconf = &conf->default_devconf;
795 else if (addr_type == VNET_DEV_ADDR_PCI)
797 p = hash_get (conf->device_config_index_by_pci_addr,
798 ((vlib_pci_addr_t *) (addr))->as_u32);
802 pool_get (conf->dev_confs, devconf);
803 hash_set (conf->device_config_index_by_pci_addr,
804 ((vlib_pci_addr_t *) (addr))->as_u32,
805 devconf - conf->dev_confs);
808 return clib_error_return (0,
809 "duplicate configuration for PCI address %U",
810 format_vlib_pci_addr, addr);
812 else if (addr_type == VNET_DEV_ADDR_VMBUS)
814 p = mhash_get (&conf->device_config_index_by_vmbus_addr,
815 (vlib_vmbus_addr_t *) (addr));
819 pool_get (conf->dev_confs, devconf);
820 mhash_set (&conf->device_config_index_by_vmbus_addr, addr,
821 devconf - conf->dev_confs, 0);
824 return clib_error_return (
825 0, "duplicate configuration for VMBUS address %U",
826 format_vlib_vmbus_addr, addr);
829 if (addr_type == VNET_DEV_ADDR_PCI)
831 devconf->pci_addr.as_u32 = ((vlib_pci_addr_t *) (addr))->as_u32;
832 devconf->tso = DPDK_DEVICE_TSO_DEFAULT;
833 devconf->dev_addr_type = VNET_DEV_ADDR_PCI;
835 else if (addr_type == VNET_DEV_ADDR_VMBUS)
837 devconf->vmbus_addr = *((vlib_vmbus_addr_t *) (addr));
838 devconf->tso = DPDK_DEVICE_TSO_DEFAULT;
839 devconf->dev_addr_type = VNET_DEV_ADDR_VMBUS;
845 unformat_skip_white_space (input);
846 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
848 if (unformat (input, "num-rx-queues %u", &devconf->num_rx_queues))
850 else if (unformat (input, "num-tx-queues %u", &devconf->num_tx_queues))
852 else if (unformat (input, "num-rx-desc %u", &devconf->num_rx_desc))
854 else if (unformat (input, "num-tx-desc %u", &devconf->num_tx_desc))
856 else if (unformat (input, "name %v", &devconf->name))
858 else if (unformat (input, "workers %U", unformat_bitmap_list,
863 (input, "rss %U", unformat_vlib_cli_sub_input, &sub_input))
865 error = unformat_rss_fn (&sub_input, &devconf->rss_fn);
869 else if (unformat (input, "tso on"))
871 devconf->tso = DPDK_DEVICE_TSO_ON;
873 else if (unformat (input, "tso off"))
875 devconf->tso = DPDK_DEVICE_TSO_OFF;
877 else if (unformat (input, "devargs %s", &devconf->devargs))
879 else if (unformat (input, "rss-queues %U",
880 unformat_bitmap_list, &devconf->rss_queues))
882 else if (unformat (input, "max-lro-pkt-size %u",
883 &devconf->max_lro_pkt_size))
887 error = clib_error_return (0, "unknown input `%U'",
888 format_unformat_error, input);
896 if (devconf->workers && devconf->num_rx_queues == 0)
897 devconf->num_rx_queues = clib_bitmap_count_set_bits (devconf->workers);
898 else if (devconf->workers &&
899 clib_bitmap_count_set_bits (devconf->workers) !=
900 devconf->num_rx_queues)
901 error = clib_error_return (0,
902 "%U: number of worker threads must be "
903 "equal to number of rx queues",
904 format_vlib_pci_addr, addr);
909 static clib_error_t *
910 dpdk_log_read_ready (clib_file_t * uf)
912 unformat_input_t input;
919 uword len = vec_len (s);
920 vec_resize (s, len + n_try);
922 n = read (uf->file_descriptor, s + len, n_try);
923 if (n < 0 && errno != EAGAIN)
924 return clib_error_return_unix (0, "read");
925 vec_set_len (s, len + (n < 0 ? 0 : n));
928 unformat_init_vector (&input, s);
930 while (unformat_user (&input, unformat_line, &line))
935 /* unfortunatelly DPDK polutes log with this error messages
936 * even when we pass --in-memory which means no secondary process */
937 if (strstr ((char *) line, "WARNING! Base virtual address hint"))
939 else if (strstr ((char *) line, "This may cause issues with mapping "
940 "memory into secondary processes"))
944 dpdk_log_notice ("%v", line);
948 unformat_free (&input);
952 static clib_error_t *
953 dpdk_config (vlib_main_t * vm, unformat_input_t * input)
955 dpdk_main_t *dm = &dpdk_main;
956 clib_error_t *error = 0;
957 dpdk_config_main_t *conf = &dpdk_config_main;
958 vlib_thread_main_t *tm = vlib_get_thread_main ();
959 dpdk_device_config_t *devconf;
960 vlib_pci_addr_t pci_addr = { 0 };
961 vlib_vmbus_addr_t vmbus_addr = { 0 };
962 unformat_input_t sub_input;
963 uword default_hugepage_sz, x;
966 int num_whitelisted = 0;
967 int eal_no_hugetlb = 0;
972 u8 *huge_dir_path = 0;
973 u32 vendor, device, domain, bus, func;
978 format (0, "%s/hugepages%c", vlib_unix_get_runtime_dir (), 0);
980 conf->device_config_index_by_pci_addr = hash_create (0, sizeof (uword));
981 mhash_init (&conf->device_config_index_by_vmbus_addr, sizeof (uword),
982 sizeof (vlib_vmbus_addr_t));
984 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
987 if (unformat (input, "no-hugetlb"))
989 vec_add1 (conf->eal_init_args, (u8 *) "--no-huge");
992 else if (unformat (input, "telemetry"))
993 conf->enable_telemetry = 1;
995 else if (unformat (input, "enable-tcp-udp-checksum"))
997 dm->default_port_conf.enable_tcp_udp_checksum = 1;
998 if (unformat (input, "enable-outer-checksum-offload"))
999 dm->default_port_conf.enable_outer_checksum_offload = 1;
1001 else if (unformat (input, "no-tx-checksum-offload"))
1002 dm->default_port_conf.disable_tx_checksum_offload = 1;
1004 else if (unformat (input, "decimal-interface-names"))
1005 conf->interface_name_format_decimal = 1;
1007 else if (unformat (input, "no-multi-seg"))
1008 dm->default_port_conf.disable_multi_seg = 1;
1009 else if (unformat (input, "enable-lro"))
1010 dm->default_port_conf.enable_lro = 1;
1011 else if (unformat (input, "max-simd-bitwidth %U",
1012 unformat_max_simd_bitwidth, &conf->max_simd_bitwidth))
1014 else if (unformat (input, "dev default %U", unformat_vlib_cli_sub_input,
1018 dpdk_device_config (conf, 0, VNET_DEV_ADDR_ANY, &sub_input, 1);
1025 (input, "dev %U %U", unformat_vlib_pci_addr, &pci_addr,
1026 unformat_vlib_cli_sub_input, &sub_input))
1028 error = dpdk_device_config (conf, &pci_addr, VNET_DEV_ADDR_PCI,
1036 else if (unformat (input, "dev %U", unformat_vlib_pci_addr, &pci_addr))
1039 dpdk_device_config (conf, &pci_addr, VNET_DEV_ADDR_PCI, 0, 0);
1046 else if (unformat (input, "dev %U %U", unformat_vlib_vmbus_addr,
1047 &vmbus_addr, unformat_vlib_cli_sub_input, &sub_input))
1049 error = dpdk_device_config (conf, &vmbus_addr, VNET_DEV_ADDR_VMBUS,
1057 else if (unformat (input, "dev %U", unformat_vlib_vmbus_addr,
1061 dpdk_device_config (conf, &vmbus_addr, VNET_DEV_ADDR_VMBUS, 0, 0);
1068 else if (unformat (input, "uio-driver %s", &conf->uio_driver_name))
1070 else if (unformat (input, "socket-mem %s", &socket_mem))
1072 else if (unformat (input, "no-pci"))
1075 tmp = format (0, "--no-pci%c", 0);
1076 vec_add1 (conf->eal_init_args, tmp);
1078 else if (unformat (input, "blacklist %U", unformat_vlib_vmbus_addr,
1081 vec_add1 (conf->blacklist_by_vmbus_addr, vmbus_addr);
1085 (input, "blacklist %x:%x:%x.%x", &domain, &bus, &device, &func))
1087 tmp = format (0, "-b%c", 0);
1088 vec_add1 (conf->eal_init_args, tmp);
1090 format (0, "%04x:%02x:%02x.%x%c", domain, bus, device, func, 0);
1091 vec_add1 (conf->eal_init_args, tmp);
1093 else if (unformat (input, "blacklist %x:%x", &vendor, &device))
1095 u32 blacklist_entry;
1096 if (vendor > 0xFFFF)
1097 return clib_error_return (0, "blacklist PCI vendor out of range");
1098 if (device > 0xFFFF)
1099 return clib_error_return (0, "blacklist PCI device out of range");
1100 blacklist_entry = (vendor << 16) | (device & 0xffff);
1101 vec_add1 (conf->blacklist_by_pci_vendor_and_device,
1104 else if (unformat (input, "no-vmbus"))
1107 tmp = format (0, "--no-vmbus%c", 0);
1108 vec_add1 (conf->eal_init_args, tmp);
1112 else if (unformat(input, #a)) \
1114 tmp = format (0, "--%s%c", #a, 0); \
1115 vec_add1 (conf->eal_init_args, tmp); \
1117 foreach_eal_double_hyphen_predicate_arg
1120 else if (unformat(input, #a " %s", &s)) \
1122 if (!strncmp(#a, "file-prefix", 11)) \
1124 tmp = format (0, "--%s%c", #a, 0); \
1125 vec_add1 (conf->eal_init_args, tmp); \
1127 if (!strncmp(#a, "vdev", 4)) \
1128 if (strstr((char*)s, "af_packet")) \
1129 clib_warning ("af_packet obsoleted. Use CLI 'create host-interface'."); \
1130 vec_add1 (conf->eal_init_args, s); \
1132 foreach_eal_double_hyphen_arg
1135 else if (unformat(input, #a " %s", &s)) \
1137 tmp = format (0, "-%s%c", #b, 0); \
1138 vec_add1 (conf->eal_init_args, tmp); \
1140 vec_add1 (conf->eal_init_args, s); \
1142 foreach_eal_single_hyphen_arg
1144 else if (unformat (input, "default"))
1147 else if (unformat_skip_white_space (input))
1149 else return clib_error_return (0, "unknown input `%U'",
1150 format_unformat_error, input);
1153 if (!conf->uio_driver_name)
1154 conf->uio_driver_name = format (0, "auto%c", 0);
1156 if (eal_no_hugetlb == 0)
1158 vec_add1 (conf->eal_init_args, (u8 *) "--in-memory");
1160 default_hugepage_sz = clib_mem_get_default_hugepage_size ();
1163 clib_bitmap_foreach (x, tm->cpu_socket_bitmap)
1167 /* preallocate at least 16MB of hugepages per socket,
1168 if more is needed it is up to consumer to preallocate more */
1169 n_pages = round_pow2 ((uword) 16 << 20, default_hugepage_sz);
1170 n_pages /= default_hugepage_sz;
1172 if ((e = clib_sysfs_prealloc_hugepages(x, 0, n_pages)))
1173 clib_error_report (e);
1178 /* on/off dpdk's telemetry thread */
1179 if (conf->enable_telemetry == 0)
1181 vec_add1 (conf->eal_init_args, (u8 *) "--no-telemetry");
1186 tmp = format (0, "--file-prefix%c", 0);
1187 vec_add1 (conf->eal_init_args, tmp);
1188 tmp = format (0, "vpp%c", 0);
1189 vec_add1 (conf->eal_init_args, tmp);
1192 if (no_pci == 0 && geteuid () == 0)
1193 dpdk_bind_devices_to_uio (conf);
1195 if (no_vmbus == 0 && geteuid () == 0)
1196 dpdk_bind_vmbus_devices_to_uio (conf);
1199 if (devconf->x == 0 && conf->default_devconf.x > 0) \
1200 devconf->x = conf->default_devconf.x ;
1202 pool_foreach (devconf, conf->dev_confs) {
1204 /* default per-device config items */
1205 foreach_dpdk_device_config_item
1207 /* copy tso config from default device */
1210 /* copy tso config from default device */
1213 /* copy rss_queues config from default device */
1216 /* assume that default is PCI */
1217 fmt_func = format_vlib_pci_addr;
1218 fmt_addr = &devconf->pci_addr;
1220 if (devconf->dev_addr_type == VNET_DEV_ADDR_VMBUS)
1222 fmt_func = format_vlib_vmbus_addr;
1223 fmt_addr = &devconf->vmbus_addr;
1226 /* add DPDK EAL whitelist/blacklist entry */
1227 if (num_whitelisted > 0 && devconf->is_blacklisted == 0)
1229 tmp = format (0, "-a%c", 0);
1230 vec_add1 (conf->eal_init_args, tmp);
1231 if (devconf->devargs)
1234 format (0, "%U,%s%c", fmt_func, fmt_addr, devconf->devargs, 0);
1238 tmp = format (0, "%U%c", fmt_func, fmt_addr, 0);
1240 vec_add1 (conf->eal_init_args, tmp);
1242 else if (num_whitelisted == 0 && devconf->is_blacklisted != 0)
1244 tmp = format (0, "-b%c", 0);
1245 vec_add1 (conf->eal_init_args, tmp);
1246 tmp = format (0, "%U%c", fmt_func, fmt_addr, 0);
1247 vec_add1 (conf->eal_init_args, tmp);
1254 clib_warning ("socket-mem argument is deprecated");
1256 /* NULL terminate the "argv" vector, in case of stupidity */
1257 vec_add1 (conf->eal_init_args, 0);
1258 vec_dec_len (conf->eal_init_args, 1);
1260 /* Set up DPDK eal and packet mbuf pool early. */
1262 int log_fds[2] = { 0 };
1263 if (pipe (log_fds) == 0)
1265 if (fcntl (log_fds[0], F_SETFL, O_NONBLOCK) == 0 &&
1266 fcntl (log_fds[1], F_SETFL, O_NONBLOCK) == 0)
1268 FILE *f = fdopen (log_fds[1], "a");
1269 if (f && rte_openlog_stream (f) == 0)
1271 clib_file_t t = { 0 };
1272 t.read_function = dpdk_log_read_ready;
1273 t.file_descriptor = log_fds[0];
1274 t.description = format (0, "DPDK logging pipe");
1275 clib_file_add (&file_main, &t);
1285 vm = vlib_get_main ();
1287 /* make copy of args as rte_eal_init tends to mess up with arg array */
1288 for (i = 1; i < vec_len (conf->eal_init_args); i++)
1289 conf->eal_init_args_str = format (conf->eal_init_args_str, "%s ",
1290 conf->eal_init_args[i]);
1292 vec_terminate_c_string (conf->eal_init_args_str);
1294 dpdk_log_notice ("EAL init args: %s", conf->eal_init_args_str);
1295 ret = rte_eal_init (vec_len (conf->eal_init_args),
1296 (char **) conf->eal_init_args);
1298 return clib_error_return (0, "rte_eal_init returned %d", ret);
1300 /* enable the AVX-512 vPMDs in DPDK */
1301 if (clib_cpu_supports_avx512_bitalg () &&
1302 conf->max_simd_bitwidth == DPDK_MAX_SIMD_BITWIDTH_DEFAULT)
1303 rte_vect_set_max_simd_bitwidth (RTE_VECT_SIMD_512);
1304 else if (conf->max_simd_bitwidth != DPDK_MAX_SIMD_BITWIDTH_DEFAULT)
1305 rte_vect_set_max_simd_bitwidth (conf->max_simd_bitwidth ==
1306 DPDK_MAX_SIMD_BITWIDTH_256 ?
1310 /* lazy umount hugepages */
1311 umount2 ((char *) huge_dir_path, MNT_DETACH);
1312 rmdir ((char *) huge_dir_path);
1313 vec_free (huge_dir_path);
1315 /* main thread 1st */
1316 if ((error = dpdk_buffer_pools_create (vm)))
1322 VLIB_CONFIG_FUNCTION (dpdk_config, "dpdk");
1325 dpdk_update_link_state (dpdk_device_t * xd, f64 now)
1327 vnet_main_t *vnm = vnet_get_main ();
1328 struct rte_eth_link prev_link = xd->link;
1330 u8 hw_flags_chg = 0;
1332 xd->time_last_link_update = now ? now : xd->time_last_link_update;
1333 clib_memset (&xd->link, 0, sizeof (xd->link));
1334 rte_eth_link_get_nowait (xd->port_id, &xd->link);
1336 if (LINK_STATE_ELOGS)
1338 ELOG_TYPE_DECLARE (e) =
1341 "update-link-state: sw_if_index %d, admin_up %d,"
1342 "old link_state %d new link_state %d",.format_args = "i4i1i1i1",};
1351 ed = ELOG_DATA (&vlib_global_main.elog_main, e);
1352 ed->sw_if_index = xd->sw_if_index;
1353 ed->admin_up = (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) != 0;
1354 ed->old_link_state = (u8)
1355 vnet_hw_interface_is_link_up (vnm, xd->hw_if_index);
1356 ed->new_link_state = (u8) xd->link.link_status;
1359 if ((xd->link.link_duplex != prev_link.link_duplex))
1362 switch (xd->link.link_duplex)
1364 case ETH_LINK_HALF_DUPLEX:
1365 hw_flags |= VNET_HW_INTERFACE_FLAG_HALF_DUPLEX;
1367 case ETH_LINK_FULL_DUPLEX:
1368 hw_flags |= VNET_HW_INTERFACE_FLAG_FULL_DUPLEX;
1374 if (xd->link.link_speed != prev_link.link_speed)
1375 vnet_hw_interface_set_link_speed (vnm, xd->hw_if_index,
1376 xd->link.link_speed * 1000);
1378 if (xd->link.link_status != prev_link.link_status)
1382 if (xd->link.link_status)
1383 hw_flags |= VNET_HW_INTERFACE_FLAG_LINK_UP;
1388 if (LINK_STATE_ELOGS)
1390 ELOG_TYPE_DECLARE (e) =
1393 "update-link-state: sw_if_index %d, new flags %d",.format_args
1401 ed = ELOG_DATA (&vlib_global_main.elog_main, e);
1402 ed->sw_if_index = xd->sw_if_index;
1403 ed->flags = hw_flags;
1405 vnet_hw_interface_set_flags (vnm, xd->hw_if_index, hw_flags);
1410 dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
1412 clib_error_t *error;
1413 dpdk_main_t *dm = &dpdk_main;
1415 vlib_thread_main_t *tm = vlib_get_thread_main ();
1417 error = dpdk_lib_init (dm);
1420 clib_error_report (error);
1422 if (dpdk_cryptodev_init)
1424 error = dpdk_cryptodev_init (vm);
1427 vlib_log_warn (dpdk_main.log_cryptodev, "%U", format_clib_error,
1429 clib_error_free (error);
1433 tm->worker_thread_release = 1;
1435 f64 now = vlib_time_now (vm);
1436 vec_foreach (xd, dm->devices)
1438 dpdk_update_link_state (xd, now);
1444 * check each time through the loop in case intervals are changed
1446 f64 min_wait = dm->link_state_poll_interval < dm->stat_poll_interval ?
1447 dm->link_state_poll_interval : dm->stat_poll_interval;
1449 vlib_process_wait_for_event_or_clock (vm, min_wait);
1451 if (dm->admin_up_down_in_progress)
1452 /* skip the poll if an admin up down is in progress (on any interface) */
1455 vec_foreach (xd, dm->devices)
1457 f64 now = vlib_time_now (vm);
1458 if ((now - xd->time_last_stats_update) >= dm->stat_poll_interval)
1459 dpdk_update_counters (xd, now);
1460 if ((now - xd->time_last_link_update) >= dm->link_state_poll_interval)
1461 dpdk_update_link_state (xd, now);
1470 VLIB_REGISTER_NODE (dpdk_process_node,static) = {
1471 .function = dpdk_process,
1472 .type = VLIB_NODE_TYPE_PROCESS,
1473 .name = "dpdk-process",
1474 .process_log2_n_stack_bytes = 17,
1478 static clib_error_t *
1479 dpdk_init (vlib_main_t * vm)
1481 dpdk_main_t *dm = &dpdk_main;
1482 clib_error_t *error = 0;
1484 /* verify that structs are cacheline aligned */
1485 STATIC_ASSERT (offsetof (dpdk_device_t, cacheline0) == 0,
1486 "Cache line marker must be 1st element in dpdk_device_t");
1487 STATIC_ASSERT (offsetof (dpdk_device_t, cacheline1) ==
1488 CLIB_CACHE_LINE_BYTES,
1489 "Data in cache line 0 is bigger than cache line size");
1490 STATIC_ASSERT (offsetof (frame_queue_trace_t, cacheline0) == 0,
1491 "Cache line marker must be 1st element in frame_queue_trace_t");
1493 dpdk_cli_reference ();
1495 dm->conf = &dpdk_config_main;
1497 vec_add1 (dm->conf->eal_init_args, (u8 *) "vnet");
1499 dm->stat_poll_interval = DPDK_STATS_POLL_INTERVAL;
1500 dm->link_state_poll_interval = DPDK_LINK_POLL_INTERVAL;
1502 dm->log_default = vlib_log_register_class ("dpdk", 0);
1503 dm->log_cryptodev = vlib_log_register_class ("dpdk", "cryptodev");
1508 VLIB_INIT_FUNCTION (dpdk_init);
1510 static clib_error_t *
1511 dpdk_worker_thread_init (vlib_main_t *vm)
1513 if (rte_thread_register () < 0)
1514 clib_panic ("dpdk: cannot register thread %u - %s", vm->thread_index,
1515 rte_strerror (rte_errno));
1519 VLIB_WORKER_INIT_FUNCTION (dpdk_worker_thread_init);