2 * Copyright (c) 2017 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.
16 #include <vnet/vnet.h>
17 #include <vppinfra/vec.h>
18 #include <vppinfra/format.h>
19 #include <vppinfra/file.h>
20 #include <vlib/unix/unix.h>
23 #include <vnet/ip/ip.h>
24 #include <vnet/ethernet/ethernet.h>
25 #include <vnet/ethernet/arp_packet.h>
26 #include <vnet/interface/rx_queue_funcs.h>
27 #include <dpdk/buffer.h>
28 #include <dpdk/device/dpdk.h>
29 #include <dpdk/device/dpdk_priv.h>
30 #include <vppinfra/error.h>
32 /* DPDK TX offload to vnet hw interface caps mapppings */
36 vnet_hw_if_caps_t caps;
37 } tx_off_caps_map[] = {
38 { RTE_ETH_TX_OFFLOAD_IPV4_CKSUM, VNET_HW_IF_CAP_TX_IP4_CKSUM },
39 { RTE_ETH_TX_OFFLOAD_TCP_CKSUM, VNET_HW_IF_CAP_TX_TCP_CKSUM },
40 { RTE_ETH_TX_OFFLOAD_UDP_CKSUM, VNET_HW_IF_CAP_TX_UDP_CKSUM },
41 { RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM, VNET_HW_IF_CAP_TX_IP4_OUTER_CKSUM },
42 { RTE_ETH_TX_OFFLOAD_OUTER_UDP_CKSUM, VNET_HW_IF_CAP_TX_UDP_OUTER_CKSUM },
43 { RTE_ETH_TX_OFFLOAD_TCP_TSO, VNET_HW_IF_CAP_TCP_GSO },
44 { RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO, VNET_HW_IF_CAP_VXLAN_TNL_GSO }
48 dpdk_device_error (dpdk_device_t * xd, char *str, int rv)
50 dpdk_log_err ("Interface %U error %d: %s",
51 format_dpdk_device_name, xd->port_id, rv, rte_strerror (rv));
52 xd->errors = clib_error_return (xd->errors, "%s[port:%d, errno:%d]: %s",
53 str, xd->port_id, rv, rte_strerror (rv));
57 dpdk_device_setup (dpdk_device_t * xd)
59 vlib_main_t *vm = vlib_get_main ();
60 vnet_main_t *vnm = vnet_get_main ();
61 vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, xd->sw_if_index);
62 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
63 u16 buf_sz = vlib_buffer_get_default_data_size (vm);
64 vnet_hw_if_caps_change_t caps = {};
65 struct rte_eth_dev_info dev_info;
66 struct rte_eth_conf conf = {};
72 ASSERT (vlib_get_thread_index () == 0);
74 clib_error_free (xd->errors);
75 sw->flags &= ~VNET_SW_INTERFACE_FLAG_ERROR;
77 if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
79 vnet_hw_interface_set_flags (vnm, xd->hw_if_index, 0);
80 dpdk_device_stop (xd);
83 rte_eth_dev_info_get (xd->port_id, &dev_info);
85 dpdk_log_debug ("[%u] configuring device %U", xd->port_id,
86 format_dpdk_rte_device, dev_info.device);
88 /* create rx and tx offload wishlist */
89 rxo = RTE_ETH_RX_OFFLOAD_IPV4_CKSUM;
92 if (xd->conf.enable_tcp_udp_checksum)
93 rxo |= RTE_ETH_RX_OFFLOAD_UDP_CKSUM | RTE_ETH_RX_OFFLOAD_TCP_CKSUM;
95 if (xd->conf.disable_tx_checksum_offload == 0 &&
96 xd->conf.enable_outer_checksum_offload)
98 RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM | RTE_ETH_TX_OFFLOAD_OUTER_UDP_CKSUM;
100 if (xd->conf.disable_tx_checksum_offload == 0)
101 txo |= RTE_ETH_TX_OFFLOAD_IPV4_CKSUM | RTE_ETH_TX_OFFLOAD_TCP_CKSUM |
102 RTE_ETH_TX_OFFLOAD_UDP_CKSUM;
104 if (xd->conf.disable_multi_seg == 0)
106 txo |= RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
107 rxo |= RTE_ETH_RX_OFFLOAD_SCATTER;
108 #if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0)
109 rxo |= DEV_RX_OFFLOAD_JUMBO_FRAME;
113 if (xd->conf.enable_lro)
114 rxo |= RTE_ETH_RX_OFFLOAD_TCP_LRO;
116 /* per-device offload config */
117 if (xd->conf.enable_tso)
118 txo |= RTE_ETH_TX_OFFLOAD_TCP_CKSUM | RTE_ETH_TX_OFFLOAD_TCP_TSO |
119 RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO;
121 if (xd->conf.disable_rx_scatter)
122 rxo &= ~RTE_ETH_RX_OFFLOAD_SCATTER;
124 /* mask unsupported offloads */
125 rxo &= dev_info.rx_offload_capa;
126 txo &= dev_info.tx_offload_capa;
128 dpdk_log_debug ("[%u] Supported RX offloads: %U", xd->port_id,
129 format_dpdk_rx_offload_caps, dev_info.rx_offload_capa);
130 dpdk_log_debug ("[%u] Configured RX offloads: %U", xd->port_id,
131 format_dpdk_rx_offload_caps, rxo);
132 dpdk_log_debug ("[%u] Supported TX offloads: %U", xd->port_id,
133 format_dpdk_tx_offload_caps, dev_info.tx_offload_capa);
134 dpdk_log_debug ("[%u] Configured TX offloads: %U", xd->port_id,
135 format_dpdk_tx_offload_caps, txo);
137 /* finalize configuration */
138 conf.rxmode.offloads = rxo;
139 conf.txmode.offloads = txo;
140 if (rxo & RTE_ETH_RX_OFFLOAD_TCP_LRO)
141 conf.rxmode.max_lro_pkt_size = xd->conf.max_lro_pkt_size;
143 if (xd->conf.enable_lsc_int)
144 conf.intr_conf.lsc = 1;
145 if (xd->conf.enable_rxq_int)
146 conf.intr_conf.rxq = 1;
148 conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
149 if (xd->conf.n_rx_queues > 1)
151 if (xd->conf.disable_rss == 0)
153 conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
154 conf.rx_adv_conf.rss_conf.rss_hf = xd->conf.rss_hf;
158 #if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0)
159 if (rxo & DEV_RX_OFFLOAD_JUMBO_FRAME)
161 conf.rxmode.max_rx_pkt_len = dev_info.max_rx_pktlen;
162 xd->max_supported_frame_size = dev_info.max_rx_pktlen;
163 mtu = xd->max_supported_frame_size - xd->driver_frame_overhead;
167 xd->max_supported_frame_size =
168 clib_min (1500 + xd->driver_frame_overhead, buf_sz);
171 if (xd->conf.disable_multi_seg)
172 xd->max_supported_frame_size = clib_min (dev_info.max_rx_pktlen, buf_sz);
174 xd->max_supported_frame_size = dev_info.max_rx_pktlen;
177 max_frame_size = clib_min (xd->max_supported_frame_size,
178 ethernet_main.default_mtu + hi->frame_overhead);
180 #if RTE_VERSION >= RTE_VERSION_NUM(21, 11, 0, 0)
181 conf.rxmode.mtu = max_frame_size - xd->driver_frame_overhead;
185 rv = rte_eth_dev_configure (xd->port_id, xd->conf.n_rx_queues,
186 xd->conf.n_tx_queues, &conf);
187 if (rv < 0 && conf.intr_conf.rxq)
189 conf.intr_conf.rxq = 0;
193 #if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0)
194 rte_eth_dev_set_mtu (xd->port_id,
195 max_frame_size - xd->driver_frame_overhead);
198 hi->max_frame_size = 0;
199 vnet_hw_interface_set_max_frame_size (vnm, xd->hw_if_index, max_frame_size);
200 dpdk_log_debug ("[%u] max_frame_size %u max max_frame_size %u "
201 "driver_frame_overhead %u",
202 xd->port_id, hi->max_frame_size,
203 xd->max_supported_frame_size, xd->driver_frame_overhead);
205 vec_validate_aligned (xd->tx_queues, xd->conf.n_tx_queues - 1,
206 CLIB_CACHE_LINE_BYTES);
207 for (j = 0; j < xd->conf.n_tx_queues; j++)
209 rv = rte_eth_tx_queue_setup (xd->port_id, j, xd->conf.n_tx_desc,
212 /* retry with any other CPU socket */
214 rv = rte_eth_tx_queue_setup (xd->port_id, j, xd->conf.n_tx_desc,
217 dpdk_device_error (xd, "rte_eth_tx_queue_setup", rv);
219 clib_spinlock_init (&vec_elt (xd->tx_queues, j).lock);
222 vec_validate_aligned (xd->rx_queues, xd->conf.n_rx_queues - 1,
223 CLIB_CACHE_LINE_BYTES);
225 for (j = 0; j < xd->conf.n_rx_queues; j++)
227 dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, j);
228 u8 bpidx = vlib_buffer_pool_get_default_for_numa (
229 vm, vnet_hw_if_get_rx_queue_numa_node (vnm, rxq->queue_index));
230 vlib_buffer_pool_t *bp = vlib_get_buffer_pool (vm, bpidx);
231 struct rte_mempool *mp = dpdk_mempool_by_buffer_pool_index[bpidx];
233 rv = rte_eth_rx_queue_setup (xd->port_id, j, xd->conf.n_rx_desc,
234 xd->cpu_socket, 0, mp);
236 /* retry with any other CPU socket */
238 rv = rte_eth_rx_queue_setup (xd->port_id, j, xd->conf.n_rx_desc,
239 SOCKET_ID_ANY, 0, mp);
241 rxq->buffer_pool_index = bp->index;
244 dpdk_device_error (xd, "rte_eth_rx_queue_setup", rv);
247 if (vec_len (xd->errors))
251 (VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_EXT_HDR_VALID);
253 if ((rxo & (RTE_ETH_RX_OFFLOAD_TCP_CKSUM | RTE_ETH_RX_OFFLOAD_UDP_CKSUM)) ==
254 (RTE_ETH_RX_OFFLOAD_TCP_CKSUM | RTE_ETH_RX_OFFLOAD_UDP_CKSUM))
256 (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED | VNET_BUFFER_F_L4_CHECKSUM_CORRECT);
258 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_RX_IP4_CKSUM,
259 rxo & RTE_ETH_RX_OFFLOAD_IPV4_CKSUM);
260 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_MAYBE_MULTISEG,
261 rxo & RTE_ETH_RX_OFFLOAD_SCATTER);
262 dpdk_device_flag_set (
263 xd, DPDK_DEVICE_FLAG_TX_OFFLOAD,
264 (txo & (RTE_ETH_TX_OFFLOAD_TCP_CKSUM | RTE_ETH_TX_OFFLOAD_UDP_CKSUM)) ==
265 (RTE_ETH_TX_OFFLOAD_TCP_CKSUM | RTE_ETH_TX_OFFLOAD_UDP_CKSUM));
267 /* unconditionally set mac filtering cap */
268 caps.val = caps.mask = VNET_HW_IF_CAP_MAC_FILTER;
270 ethernet_set_flags (vnm, xd->hw_if_index,
271 ETHERNET_INTERFACE_FLAG_DEFAULT_L3);
273 for (int i = 0; i < ARRAY_LEN (tx_off_caps_map); i++)
275 __typeof__ (tx_off_caps_map[0]) *v = tx_off_caps_map + i;
276 caps.mask |= v->caps;
277 if ((v->offload & txo) == v->offload)
281 vnet_hw_if_change_caps (vnm, xd->hw_if_index, &caps);
282 xd->enabled_rx_off = rxo;
283 xd->enabled_tx_off = txo;
285 if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
286 dpdk_device_start (xd);
288 if (vec_len (xd->errors))
294 xd->flags |= DPDK_DEVICE_FLAG_PMD_INIT_FAIL;
295 sw->flags |= VNET_SW_INTERFACE_FLAG_ERROR;
298 static clib_error_t *
299 dpdk_rx_read_ready (clib_file_t *uf)
301 vnet_main_t *vnm = vnet_get_main ();
302 dpdk_main_t *dm = &dpdk_main;
303 u32 qidx = uf->private_data;
304 vnet_hw_if_rx_queue_t *rxq = vnet_hw_if_get_rx_queue (vnm, qidx);
305 dpdk_device_t *xd = vec_elt_at_index (dm->devices, rxq->dev_instance);
308 CLIB_UNUSED (ssize_t size) = read (uf->file_descriptor, &b, sizeof (b));
309 if (rxq->mode != VNET_HW_IF_RX_MODE_POLLING)
311 vnet_hw_if_rx_queue_set_int_pending (vnm, uf->private_data);
312 rte_eth_dev_rx_intr_enable (xd->port_id, rxq->queue_id);
319 dpdk_setup_interrupts (dpdk_device_t *xd)
321 vnet_main_t *vnm = vnet_get_main ();
322 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
327 if (!xd->conf.enable_rxq_int)
330 /* Probe for interrupt support */
331 if (rte_eth_dev_rx_intr_enable (xd->port_id, 0))
333 dpdk_log_info ("probe for interrupt mode for device %U. Failed.\n",
334 format_dpdk_device_name, xd->port_id);
338 xd->flags |= DPDK_DEVICE_FLAG_INT_SUPPORTED;
339 if (!(xd->flags & DPDK_DEVICE_FLAG_INT_UNMASKABLE))
340 rte_eth_dev_rx_intr_disable (xd->port_id, 0);
341 dpdk_log_info ("Probe for interrupt mode for device %U. Success.\n",
342 format_dpdk_device_name, xd->port_id);
345 if (xd->flags & DPDK_DEVICE_FLAG_INT_SUPPORTED)
348 for (int q = 0; q < xd->conf.n_rx_queues; q++)
350 dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, q);
351 clib_file_t f = { 0 };
352 rxq->efd = rte_eth_dev_rx_intr_ctl_q_get_fd (xd->port_id, q);
355 xd->flags &= ~DPDK_DEVICE_FLAG_INT_SUPPORTED;
359 f.read_function = dpdk_rx_read_ready;
360 f.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED;
361 f.file_descriptor = rxq->efd;
362 f.private_data = rxq->queue_index;
364 format (0, "%U queue %u", format_dpdk_device_name, xd->port_id, q);
365 rxq->clib_file_index = clib_file_add (&file_main, &f);
366 vnet_hw_if_set_rx_queue_file_index (vnm, rxq->queue_index,
367 rxq->clib_file_index);
368 if (xd->flags & DPDK_DEVICE_FLAG_INT_UNMASKABLE)
370 clib_file_main_t *fm = &file_main;
372 pool_elt_at_index (fm->file_pool, rxq->clib_file_index);
373 fm->file_update (f, UNIX_FILE_UPDATE_DELETE);
379 vnet_hw_if_set_caps (vnm, hi->hw_if_index, VNET_HW_IF_CAP_INT_MODE);
381 vnet_hw_if_unset_caps (vnm, hi->hw_if_index, VNET_HW_IF_CAP_INT_MODE);
382 vnet_hw_if_update_runtime_data (vnm, xd->hw_if_index);
386 dpdk_device_start (dpdk_device_t * xd)
390 if (xd->flags & DPDK_DEVICE_FLAG_PMD_INIT_FAIL)
393 rv = rte_eth_dev_start (xd->port_id);
397 dpdk_device_error (xd, "rte_eth_dev_start", rv);
401 dpdk_log_debug ("[%u] RX burst function: %U", xd->port_id,
402 format_dpdk_burst_fn, xd, VLIB_RX);
403 dpdk_log_debug ("[%u] TX burst function: %U", xd->port_id,
404 format_dpdk_burst_fn, xd, VLIB_TX);
406 dpdk_setup_interrupts (xd);
408 if (xd->default_mac_address)
409 rv = rte_eth_dev_default_mac_addr_set (xd->port_id,
410 (void *) xd->default_mac_address);
413 dpdk_device_error (xd, "rte_eth_dev_default_mac_addr_set", rv);
415 if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
416 rte_eth_promiscuous_enable (xd->port_id);
418 rte_eth_promiscuous_disable (xd->port_id);
420 rte_eth_allmulticast_enable (xd->port_id);
422 dpdk_log_info ("Interface %U started",
423 format_dpdk_device_name, xd->port_id);
427 dpdk_device_stop (dpdk_device_t * xd)
429 if (xd->flags & DPDK_DEVICE_FLAG_PMD_INIT_FAIL)
432 rte_eth_allmulticast_disable (xd->port_id);
433 rte_eth_dev_stop (xd->port_id);
434 clib_memset (&xd->link, 0, sizeof (struct rte_eth_link));
436 dpdk_log_info ("Interface %U stopped",
437 format_dpdk_device_name, xd->port_id);
440 void vl_api_force_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
443 dpdk_port_state_callback_inline (dpdk_portid_t port_id,
444 enum rte_eth_event_type type, void *param)
446 struct rte_eth_link link;
448 RTE_SET_USED (param);
449 if (type != RTE_ETH_EVENT_INTR_LSC)
451 dpdk_log_info ("Unknown event %d received for port %d", type, port_id);
455 rte_eth_link_get_nowait (port_id, &link);
456 u8 link_up = link.link_status;
458 dpdk_log_info ("Port %d Link Up - speed %u Mbps - %s", port_id,
459 (unsigned) link.link_speed,
460 (link.link_duplex == RTE_ETH_LINK_FULL_DUPLEX) ?
464 dpdk_log_info ("Port %d Link Down\n\n", port_id);
470 dpdk_port_state_callback (dpdk_portid_t port_id,
471 enum rte_eth_event_type type,
473 void *ret_param __attribute__ ((unused)))
475 return dpdk_port_state_callback_inline (port_id, type, param);
478 /* If this device is PCI return pointer to info, otherwise NULL */
479 struct rte_pci_device *
480 dpdk_get_pci_device (const struct rte_eth_dev_info *info)
482 const struct rte_bus *bus;
484 bus = rte_bus_find_by_device (info->device);
485 #if RTE_VERSION >= RTE_VERSION_NUM(22, 11, 0, 0)
486 if (bus && !strcmp (rte_bus_name (bus), "pci"))
488 if (bus && !strcmp (bus->name, "pci"))
490 return RTE_DEV_TO_PCI (info->device);
495 /* If this device is VMBUS return pointer to info, otherwise NULL */
496 struct rte_vmbus_device *
497 dpdk_get_vmbus_device (const struct rte_eth_dev_info *info)
499 const struct rte_bus *bus;
501 bus = rte_bus_find_by_device (info->device);
502 #if RTE_VERSION >= RTE_VERSION_NUM(22, 11, 0, 0)
503 if (bus && !strcmp (rte_bus_name (bus), "vmbus"))
505 if (bus && !strcmp (bus->name, "vmbus"))
507 return container_of (info->device, struct rte_vmbus_device, device);
513 * fd.io coding-style-patch-verification: ON
516 * eval: (c-set-style "gnu")