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 /* Enable flow director when flows exist */
138 if (xd->supported_flow_actions &&
139 (xd->flags & DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD) != 0)
140 conf.fdir_conf.mode = RTE_FDIR_MODE_PERFECT;
142 /* finalize configuration */
143 conf.rxmode.offloads = rxo;
144 conf.txmode.offloads = txo;
145 if (rxo & RTE_ETH_RX_OFFLOAD_TCP_LRO)
146 conf.rxmode.max_lro_pkt_size = xd->conf.max_lro_pkt_size;
148 if (xd->conf.enable_lsc_int)
149 conf.intr_conf.lsc = 1;
150 if (xd->conf.enable_rxq_int)
151 conf.intr_conf.rxq = 1;
153 conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE;
154 if (xd->conf.n_rx_queues > 1)
156 if (xd->conf.disable_rss == 0)
158 conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS;
159 conf.rx_adv_conf.rss_conf.rss_hf = xd->conf.rss_hf;
163 #if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0)
164 if (rxo & DEV_RX_OFFLOAD_JUMBO_FRAME)
166 conf.rxmode.max_rx_pkt_len = dev_info.max_rx_pktlen;
167 xd->max_supported_frame_size = dev_info.max_rx_pktlen;
168 mtu = xd->max_supported_frame_size - xd->driver_frame_overhead;
172 xd->max_supported_frame_size =
173 clib_min (1500 + xd->driver_frame_overhead, buf_sz);
176 if (xd->conf.disable_multi_seg)
177 xd->max_supported_frame_size = clib_min (dev_info.max_rx_pktlen, buf_sz);
179 xd->max_supported_frame_size = dev_info.max_rx_pktlen;
182 max_frame_size = clib_min (xd->max_supported_frame_size,
183 ethernet_main.default_mtu + hi->frame_overhead);
185 #if RTE_VERSION >= RTE_VERSION_NUM(21, 11, 0, 0)
186 conf.rxmode.mtu = max_frame_size - xd->driver_frame_overhead;
190 rv = rte_eth_dev_configure (xd->port_id, xd->conf.n_rx_queues,
191 xd->conf.n_tx_queues, &conf);
192 if (rv < 0 && conf.intr_conf.rxq)
194 conf.intr_conf.rxq = 0;
198 #if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0)
199 rte_eth_dev_set_mtu (xd->port_id,
200 max_frame_size - xd->driver_frame_overhead);
203 hi->max_frame_size = 0;
204 vnet_hw_interface_set_max_frame_size (vnm, xd->hw_if_index, max_frame_size);
205 dpdk_log_debug ("[%u] max_frame_size %u max max_frame_size %u "
206 "driver_frame_overhead %u",
207 xd->port_id, hi->max_frame_size,
208 xd->max_supported_frame_size, xd->driver_frame_overhead);
210 vec_validate_aligned (xd->tx_queues, xd->conf.n_tx_queues - 1,
211 CLIB_CACHE_LINE_BYTES);
212 for (j = 0; j < xd->conf.n_tx_queues; j++)
214 rv = rte_eth_tx_queue_setup (xd->port_id, j, xd->conf.n_tx_desc,
217 /* retry with any other CPU socket */
219 rv = rte_eth_tx_queue_setup (xd->port_id, j, xd->conf.n_tx_desc,
222 dpdk_device_error (xd, "rte_eth_tx_queue_setup", rv);
224 clib_spinlock_init (&vec_elt (xd->tx_queues, j).lock);
227 vec_validate_aligned (xd->rx_queues, xd->conf.n_rx_queues - 1,
228 CLIB_CACHE_LINE_BYTES);
230 for (j = 0; j < xd->conf.n_rx_queues; j++)
232 dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, j);
233 u8 bpidx = vlib_buffer_pool_get_default_for_numa (
234 vm, vnet_hw_if_get_rx_queue_numa_node (vnm, rxq->queue_index));
235 vlib_buffer_pool_t *bp = vlib_get_buffer_pool (vm, bpidx);
236 struct rte_mempool *mp = dpdk_mempool_by_buffer_pool_index[bpidx];
238 rv = rte_eth_rx_queue_setup (xd->port_id, j, xd->conf.n_rx_desc,
239 xd->cpu_socket, 0, mp);
241 /* retry with any other CPU socket */
243 rv = rte_eth_rx_queue_setup (xd->port_id, j, xd->conf.n_rx_desc,
244 SOCKET_ID_ANY, 0, mp);
246 rxq->buffer_pool_index = bp->index;
249 dpdk_device_error (xd, "rte_eth_rx_queue_setup", rv);
252 if (vec_len (xd->errors))
256 (VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_EXT_HDR_VALID);
258 if ((rxo & (RTE_ETH_RX_OFFLOAD_TCP_CKSUM | RTE_ETH_RX_OFFLOAD_UDP_CKSUM)) ==
259 (RTE_ETH_RX_OFFLOAD_TCP_CKSUM | RTE_ETH_RX_OFFLOAD_UDP_CKSUM))
261 (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED | VNET_BUFFER_F_L4_CHECKSUM_CORRECT);
263 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_RX_IP4_CKSUM,
264 rxo & RTE_ETH_RX_OFFLOAD_IPV4_CKSUM);
265 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_MAYBE_MULTISEG,
266 rxo & RTE_ETH_RX_OFFLOAD_SCATTER);
267 dpdk_device_flag_set (
268 xd, DPDK_DEVICE_FLAG_TX_OFFLOAD,
269 (txo & (RTE_ETH_TX_OFFLOAD_TCP_CKSUM | RTE_ETH_TX_OFFLOAD_UDP_CKSUM)) ==
270 (RTE_ETH_TX_OFFLOAD_TCP_CKSUM | RTE_ETH_TX_OFFLOAD_UDP_CKSUM));
272 /* unconditionally set mac filtering cap */
273 caps.val = caps.mask = VNET_HW_IF_CAP_MAC_FILTER;
275 ethernet_set_flags (vnm, xd->hw_if_index,
276 ETHERNET_INTERFACE_FLAG_DEFAULT_L3);
278 for (int i = 0; i < ARRAY_LEN (tx_off_caps_map); i++)
280 __typeof__ (tx_off_caps_map[0]) *v = tx_off_caps_map + i;
281 caps.mask |= v->caps;
282 if ((v->offload & txo) == v->offload)
286 vnet_hw_if_change_caps (vnm, xd->hw_if_index, &caps);
287 xd->enabled_rx_off = rxo;
288 xd->enabled_tx_off = txo;
290 if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
291 dpdk_device_start (xd);
293 if (vec_len (xd->errors))
299 xd->flags |= DPDK_DEVICE_FLAG_PMD_INIT_FAIL;
300 sw->flags |= VNET_SW_INTERFACE_FLAG_ERROR;
303 static clib_error_t *
304 dpdk_rx_read_ready (clib_file_t *uf)
306 vnet_main_t *vnm = vnet_get_main ();
307 dpdk_main_t *dm = &dpdk_main;
308 u32 qidx = uf->private_data;
309 vnet_hw_if_rx_queue_t *rxq = vnet_hw_if_get_rx_queue (vnm, qidx);
310 dpdk_device_t *xd = vec_elt_at_index (dm->devices, rxq->dev_instance);
313 CLIB_UNUSED (ssize_t size) = read (uf->file_descriptor, &b, sizeof (b));
314 if (rxq->mode != VNET_HW_IF_RX_MODE_POLLING)
316 vnet_hw_if_rx_queue_set_int_pending (vnm, uf->private_data);
317 rte_eth_dev_rx_intr_enable (xd->port_id, rxq->queue_id);
324 dpdk_setup_interrupts (dpdk_device_t *xd)
326 vnet_main_t *vnm = vnet_get_main ();
327 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
332 if (!xd->conf.enable_rxq_int)
335 /* Probe for interrupt support */
336 if (rte_eth_dev_rx_intr_enable (xd->port_id, 0))
338 dpdk_log_info ("probe for interrupt mode for device %U. Failed.\n",
339 format_dpdk_device_name, xd->port_id);
343 xd->flags |= DPDK_DEVICE_FLAG_INT_SUPPORTED;
344 if (!(xd->flags & DPDK_DEVICE_FLAG_INT_UNMASKABLE))
345 rte_eth_dev_rx_intr_disable (xd->port_id, 0);
346 dpdk_log_info ("Probe for interrupt mode for device %U. Success.\n",
347 format_dpdk_device_name, xd->port_id);
350 if (xd->flags & DPDK_DEVICE_FLAG_INT_SUPPORTED)
353 for (int q = 0; q < xd->conf.n_rx_queues; q++)
355 dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, q);
356 clib_file_t f = { 0 };
357 rxq->efd = rte_eth_dev_rx_intr_ctl_q_get_fd (xd->port_id, q);
360 xd->flags &= ~DPDK_DEVICE_FLAG_INT_SUPPORTED;
364 f.read_function = dpdk_rx_read_ready;
365 f.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED;
366 f.file_descriptor = rxq->efd;
367 f.private_data = rxq->queue_index;
369 format (0, "%U queue %u", format_dpdk_device_name, xd->port_id, q);
370 rxq->clib_file_index = clib_file_add (&file_main, &f);
371 vnet_hw_if_set_rx_queue_file_index (vnm, rxq->queue_index,
372 rxq->clib_file_index);
373 if (xd->flags & DPDK_DEVICE_FLAG_INT_UNMASKABLE)
375 clib_file_main_t *fm = &file_main;
377 pool_elt_at_index (fm->file_pool, rxq->clib_file_index);
378 fm->file_update (f, UNIX_FILE_UPDATE_DELETE);
384 vnet_hw_if_set_caps (vnm, hi->hw_if_index, VNET_HW_IF_CAP_INT_MODE);
386 vnet_hw_if_unset_caps (vnm, hi->hw_if_index, VNET_HW_IF_CAP_INT_MODE);
387 vnet_hw_if_update_runtime_data (vnm, xd->hw_if_index);
391 dpdk_device_start (dpdk_device_t * xd)
395 if (xd->flags & DPDK_DEVICE_FLAG_PMD_INIT_FAIL)
398 rv = rte_eth_dev_start (xd->port_id);
402 dpdk_device_error (xd, "rte_eth_dev_start", rv);
406 dpdk_log_debug ("[%u] RX burst function: %U", xd->port_id,
407 format_dpdk_burst_fn, xd, VLIB_RX);
408 dpdk_log_debug ("[%u] TX burst function: %U", xd->port_id,
409 format_dpdk_burst_fn, xd, VLIB_TX);
411 dpdk_setup_interrupts (xd);
413 if (xd->default_mac_address)
414 rv = rte_eth_dev_default_mac_addr_set (xd->port_id,
415 (void *) xd->default_mac_address);
418 dpdk_device_error (xd, "rte_eth_dev_default_mac_addr_set", rv);
420 if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
421 rte_eth_promiscuous_enable (xd->port_id);
423 rte_eth_promiscuous_disable (xd->port_id);
425 rte_eth_allmulticast_enable (xd->port_id);
427 dpdk_log_info ("Interface %U started",
428 format_dpdk_device_name, xd->port_id);
432 dpdk_device_stop (dpdk_device_t * xd)
434 if (xd->flags & DPDK_DEVICE_FLAG_PMD_INIT_FAIL)
437 rte_eth_allmulticast_disable (xd->port_id);
438 rte_eth_dev_stop (xd->port_id);
439 clib_memset (&xd->link, 0, sizeof (struct rte_eth_link));
441 dpdk_log_info ("Interface %U stopped",
442 format_dpdk_device_name, xd->port_id);
445 void vl_api_force_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
448 dpdk_port_state_callback_inline (dpdk_portid_t port_id,
449 enum rte_eth_event_type type, void *param)
451 struct rte_eth_link link;
453 RTE_SET_USED (param);
454 if (type != RTE_ETH_EVENT_INTR_LSC)
456 dpdk_log_info ("Unknown event %d received for port %d", type, port_id);
460 rte_eth_link_get_nowait (port_id, &link);
461 u8 link_up = link.link_status;
463 dpdk_log_info ("Port %d Link Up - speed %u Mbps - %s", port_id,
464 (unsigned) link.link_speed,
465 (link.link_duplex == RTE_ETH_LINK_FULL_DUPLEX) ?
469 dpdk_log_info ("Port %d Link Down\n\n", port_id);
475 dpdk_port_state_callback (dpdk_portid_t port_id,
476 enum rte_eth_event_type type,
478 void *ret_param __attribute__ ((unused)))
480 return dpdk_port_state_callback_inline (port_id, type, param);
483 /* If this device is PCI return pointer to info, otherwise NULL */
484 struct rte_pci_device *
485 dpdk_get_pci_device (const struct rte_eth_dev_info *info)
487 const struct rte_bus *bus;
489 bus = rte_bus_find_by_device (info->device);
490 if (bus && !strcmp (bus->name, "pci"))
491 return RTE_DEV_TO_PCI (info->device);
496 /* If this device is VMBUS return pointer to info, otherwise NULL */
497 struct rte_vmbus_device *
498 dpdk_get_vmbus_device (const struct rte_eth_dev_info *info)
500 const struct rte_bus *bus;
502 bus = rte_bus_find_by_device (info->device);
503 if (bus && !strcmp (bus->name, "vmbus"))
504 return container_of (info->device, struct rte_vmbus_device, device);
510 * fd.io coding-style-patch-verification: ON
513 * eval: (c-set-style "gnu")