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 { DEV_TX_OFFLOAD_IPV4_CKSUM, VNET_HW_IF_CAP_TX_IP4_CKSUM },
39 { DEV_TX_OFFLOAD_TCP_CKSUM, VNET_HW_IF_CAP_TX_TCP_CKSUM },
40 { DEV_TX_OFFLOAD_UDP_CKSUM, VNET_HW_IF_CAP_TX_UDP_CKSUM },
41 { DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM, VNET_HW_IF_CAP_TX_IP4_OUTER_CKSUM },
42 { DEV_TX_OFFLOAD_OUTER_UDP_CKSUM, VNET_HW_IF_CAP_TX_UDP_OUTER_CKSUM },
43 { DEV_TX_OFFLOAD_TCP_TSO, VNET_HW_IF_CAP_TCP_GSO },
44 { DEV_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 vlib_thread_main_t *tm = vlib_get_thread_main ();
62 vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, xd->sw_if_index);
63 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
64 u16 buf_sz = vlib_buffer_get_default_data_size (vm);
65 vnet_hw_if_caps_change_t caps = {};
66 struct rte_eth_dev_info dev_info;
67 struct rte_eth_conf conf = {};
73 ASSERT (vlib_get_thread_index () == 0);
75 clib_error_free (xd->errors);
76 sw->flags &= ~VNET_SW_INTERFACE_FLAG_ERROR;
78 if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
80 vnet_hw_interface_set_flags (vnm, xd->hw_if_index, 0);
81 dpdk_device_stop (xd);
84 rte_eth_dev_info_get (xd->port_id, &dev_info);
86 dpdk_log_debug ("[%u] configuring device %U", xd->port_id,
87 format_dpdk_rte_device, dev_info.device);
89 /* create rx and tx offload wishlist */
90 rxo = DEV_RX_OFFLOAD_IPV4_CKSUM;
93 if (xd->conf.enable_tcp_udp_checksum)
94 rxo |= DEV_RX_OFFLOAD_UDP_CKSUM | DEV_RX_OFFLOAD_TCP_CKSUM;
96 if (xd->conf.disable_tx_checksum_offload == 0 &&
97 xd->conf.enable_outer_checksum_offload)
98 txo |= DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM | DEV_TX_OFFLOAD_OUTER_UDP_CKSUM;
100 if (xd->conf.disable_tx_checksum_offload == 0)
101 txo |= DEV_TX_OFFLOAD_IPV4_CKSUM | DEV_TX_OFFLOAD_TCP_CKSUM |
102 DEV_TX_OFFLOAD_UDP_CKSUM;
104 if (xd->conf.disable_multi_seg == 0)
106 txo |= DEV_TX_OFFLOAD_MULTI_SEGS;
107 rxo |= DEV_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 |= DEV_RX_OFFLOAD_TCP_LRO;
116 /* per-device offload config */
117 if (xd->conf.enable_tso)
118 txo |= DEV_TX_OFFLOAD_TCP_CKSUM | DEV_TX_OFFLOAD_TCP_TSO |
119 DEV_TX_OFFLOAD_VXLAN_TNL_TSO;
121 if (xd->conf.disable_rx_scatter)
122 rxo &= ~DEV_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 & DEV_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 = ETH_MQ_RX_NONE;
154 if (xd->conf.n_rx_queues > 1)
156 if (xd->conf.disable_rss == 0)
158 conf.rxmode.mq_mode = 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;
173 xd->max_supported_frame_size = mtu + xd->driver_frame_overhead;
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 mtu = clib_min (xd->max_supported_frame_size - xd->driver_frame_overhead,
183 ethernet_main.default_mtu);
184 mtu = mtu + hi->frame_overhead - xd->driver_frame_overhead;
186 #if RTE_VERSION >= RTE_VERSION_NUM(21, 11, 0, 0)
187 conf.rxmode.mtu = mtu;
191 rv = rte_eth_dev_configure (xd->port_id, xd->conf.n_rx_queues,
192 xd->conf.n_tx_queues, &conf);
193 if (rv < 0 && conf.intr_conf.rxq)
195 conf.intr_conf.rxq = 0;
199 #if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0)
200 rte_eth_dev_set_mtu (xd->port_id, mtu);
203 hi->max_frame_size = 0;
204 vnet_hw_interface_set_max_frame_size (vnm, xd->hw_if_index,
205 mtu + hi->frame_overhead);
206 dpdk_log_debug ("[%u] mtu %u max_frame_size %u max max_frame_size %u "
207 "driver_frame_overhead %u",
208 xd->port_id, mtu, hi->max_frame_size,
209 xd->max_supported_frame_size, xd->driver_frame_overhead);
211 vec_validate_aligned (xd->tx_queues, xd->conf.n_tx_queues - 1,
212 CLIB_CACHE_LINE_BYTES);
213 for (j = 0; j < xd->conf.n_tx_queues; j++)
215 rv = rte_eth_tx_queue_setup (xd->port_id, j, xd->conf.n_tx_desc,
218 /* retry with any other CPU socket */
220 rv = rte_eth_tx_queue_setup (xd->port_id, j, xd->conf.n_tx_desc,
223 dpdk_device_error (xd, "rte_eth_tx_queue_setup", rv);
225 if (xd->conf.n_tx_queues < tm->n_vlib_mains)
226 clib_spinlock_init (&vec_elt (xd->tx_queues, j).lock);
229 vec_validate_aligned (xd->rx_queues, xd->conf.n_rx_queues - 1,
230 CLIB_CACHE_LINE_BYTES);
232 for (j = 0; j < xd->conf.n_rx_queues; j++)
234 dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, j);
235 u8 bpidx = vlib_buffer_pool_get_default_for_numa (
236 vm, vnet_hw_if_get_rx_queue_numa_node (vnm, rxq->queue_index));
237 vlib_buffer_pool_t *bp = vlib_get_buffer_pool (vm, bpidx);
238 struct rte_mempool *mp = dpdk_mempool_by_buffer_pool_index[bpidx];
240 rv = rte_eth_rx_queue_setup (xd->port_id, j, xd->conf.n_rx_desc,
241 xd->cpu_socket, 0, mp);
243 /* retry with any other CPU socket */
245 rv = rte_eth_rx_queue_setup (xd->port_id, j, xd->conf.n_rx_desc,
246 SOCKET_ID_ANY, 0, mp);
248 rxq->buffer_pool_index = bp->index;
251 dpdk_device_error (xd, "rte_eth_rx_queue_setup", rv);
254 if (vec_len (xd->errors))
258 (VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_EXT_HDR_VALID);
260 if ((rxo & (DEV_RX_OFFLOAD_TCP_CKSUM | DEV_RX_OFFLOAD_UDP_CKSUM)) ==
261 (DEV_RX_OFFLOAD_TCP_CKSUM | DEV_RX_OFFLOAD_UDP_CKSUM))
263 (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED | VNET_BUFFER_F_L4_CHECKSUM_CORRECT);
265 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_RX_IP4_CKSUM,
266 rxo & DEV_RX_OFFLOAD_IPV4_CKSUM);
267 dpdk_device_flag_set (xd, DPDK_DEVICE_FLAG_MAYBE_MULTISEG,
268 rxo & DEV_RX_OFFLOAD_SCATTER);
269 dpdk_device_flag_set (
270 xd, DPDK_DEVICE_FLAG_TX_OFFLOAD,
271 (txo & (DEV_TX_OFFLOAD_TCP_CKSUM | DEV_TX_OFFLOAD_UDP_CKSUM)) ==
272 (DEV_TX_OFFLOAD_TCP_CKSUM | DEV_TX_OFFLOAD_UDP_CKSUM));
274 /* unconditionally set mac filtering cap */
275 caps.val = caps.mask = VNET_HW_IF_CAP_MAC_FILTER;
277 ethernet_set_flags (vnm, xd->hw_if_index,
278 ETHERNET_INTERFACE_FLAG_DEFAULT_L3);
280 for (int i = 0; i < ARRAY_LEN (tx_off_caps_map); i++)
282 __typeof__ (tx_off_caps_map[0]) *v = tx_off_caps_map + i;
283 caps.mask |= v->caps;
284 if ((v->offload & txo) == v->offload)
288 vnet_hw_if_change_caps (vnm, xd->hw_if_index, &caps);
289 xd->enabled_rx_off = rxo;
290 xd->enabled_tx_off = txo;
292 if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
293 dpdk_device_start (xd);
295 if (vec_len (xd->errors))
301 xd->flags |= DPDK_DEVICE_FLAG_PMD_INIT_FAIL;
302 sw->flags |= VNET_SW_INTERFACE_FLAG_ERROR;
305 static clib_error_t *
306 dpdk_rx_read_ready (clib_file_t *uf)
308 vnet_main_t *vnm = vnet_get_main ();
309 dpdk_main_t *dm = &dpdk_main;
310 u32 qidx = uf->private_data;
311 vnet_hw_if_rx_queue_t *rxq = vnet_hw_if_get_rx_queue (vnm, qidx);
312 dpdk_device_t *xd = vec_elt_at_index (dm->devices, rxq->dev_instance);
315 CLIB_UNUSED (ssize_t size) = read (uf->file_descriptor, &b, sizeof (b));
316 if (rxq->mode != VNET_HW_IF_RX_MODE_POLLING)
318 vnet_hw_if_rx_queue_set_int_pending (vnm, uf->private_data);
319 rte_eth_dev_rx_intr_enable (xd->port_id, rxq->queue_id);
326 dpdk_setup_interrupts (dpdk_device_t *xd)
328 vnet_main_t *vnm = vnet_get_main ();
329 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, xd->hw_if_index);
334 if (!xd->conf.enable_rxq_int)
337 /* Probe for interrupt support */
338 if (rte_eth_dev_rx_intr_enable (xd->port_id, 0))
340 dpdk_log_info ("probe for interrupt mode for device %U. Failed.\n",
341 format_dpdk_device_name, xd->port_id);
345 xd->flags |= DPDK_DEVICE_FLAG_INT_SUPPORTED;
346 if (!(xd->flags & DPDK_DEVICE_FLAG_INT_UNMASKABLE))
347 rte_eth_dev_rx_intr_disable (xd->port_id, 0);
348 dpdk_log_info ("Probe for interrupt mode for device %U. Success.\n",
349 format_dpdk_device_name, xd->port_id);
352 if (xd->flags & DPDK_DEVICE_FLAG_INT_SUPPORTED)
355 for (int q = 0; q < xd->conf.n_rx_queues; q++)
357 dpdk_rx_queue_t *rxq = vec_elt_at_index (xd->rx_queues, q);
358 clib_file_t f = { 0 };
359 rxq->efd = rte_eth_dev_rx_intr_ctl_q_get_fd (xd->port_id, q);
362 xd->flags &= ~DPDK_DEVICE_FLAG_INT_SUPPORTED;
366 f.read_function = dpdk_rx_read_ready;
367 f.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED;
368 f.file_descriptor = rxq->efd;
369 f.private_data = rxq->queue_index;
371 format (0, "%U queue %u", format_dpdk_device_name, xd->port_id, q);
372 rxq->clib_file_index = clib_file_add (&file_main, &f);
373 vnet_hw_if_set_rx_queue_file_index (vnm, rxq->queue_index,
374 rxq->clib_file_index);
375 if (xd->flags & DPDK_DEVICE_FLAG_INT_UNMASKABLE)
377 clib_file_main_t *fm = &file_main;
379 pool_elt_at_index (fm->file_pool, rxq->clib_file_index);
380 fm->file_update (f, UNIX_FILE_UPDATE_DELETE);
386 vnet_hw_if_set_caps (vnm, hi->hw_if_index, VNET_HW_IF_CAP_INT_MODE);
388 vnet_hw_if_unset_caps (vnm, hi->hw_if_index, VNET_HW_IF_CAP_INT_MODE);
389 vnet_hw_if_update_runtime_data (vnm, xd->hw_if_index);
393 dpdk_device_start (dpdk_device_t * xd)
397 if (xd->flags & DPDK_DEVICE_FLAG_PMD_INIT_FAIL)
400 rv = rte_eth_dev_start (xd->port_id);
404 dpdk_device_error (xd, "rte_eth_dev_start", rv);
408 dpdk_log_debug ("[%u] RX burst function: %U", xd->port_id,
409 format_dpdk_burst_fn, xd, VLIB_RX);
410 dpdk_log_debug ("[%u] TX burst function: %U", xd->port_id,
411 format_dpdk_burst_fn, xd, VLIB_TX);
413 dpdk_setup_interrupts (xd);
415 if (xd->default_mac_address)
416 rv = rte_eth_dev_default_mac_addr_set (xd->port_id,
417 (void *) xd->default_mac_address);
420 dpdk_device_error (xd, "rte_eth_dev_default_mac_addr_set", rv);
422 if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
423 rte_eth_promiscuous_enable (xd->port_id);
425 rte_eth_promiscuous_disable (xd->port_id);
427 rte_eth_allmulticast_enable (xd->port_id);
429 dpdk_log_info ("Interface %U started",
430 format_dpdk_device_name, xd->port_id);
434 dpdk_device_stop (dpdk_device_t * xd)
436 if (xd->flags & DPDK_DEVICE_FLAG_PMD_INIT_FAIL)
439 rte_eth_allmulticast_disable (xd->port_id);
440 rte_eth_dev_stop (xd->port_id);
441 clib_memset (&xd->link, 0, sizeof (struct rte_eth_link));
443 dpdk_log_info ("Interface %U stopped",
444 format_dpdk_device_name, xd->port_id);
447 void vl_api_force_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
450 dpdk_port_state_callback_inline (dpdk_portid_t port_id,
451 enum rte_eth_event_type type, void *param)
453 struct rte_eth_link link;
455 RTE_SET_USED (param);
456 if (type != RTE_ETH_EVENT_INTR_LSC)
458 dpdk_log_info ("Unknown event %d received for port %d", type, port_id);
462 rte_eth_link_get_nowait (port_id, &link);
463 u8 link_up = link.link_status;
465 dpdk_log_info ("Port %d Link Up - speed %u Mbps - %s",
466 port_id, (unsigned) link.link_speed,
467 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
468 "full-duplex" : "half-duplex");
470 dpdk_log_info ("Port %d Link Down\n\n", port_id);
476 dpdk_port_state_callback (dpdk_portid_t port_id,
477 enum rte_eth_event_type type,
479 void *ret_param __attribute__ ((unused)))
481 return dpdk_port_state_callback_inline (port_id, type, param);
484 /* If this device is PCI return pointer to info, otherwise NULL */
485 struct rte_pci_device *
486 dpdk_get_pci_device (const struct rte_eth_dev_info *info)
488 const struct rte_bus *bus;
490 bus = rte_bus_find_by_device (info->device);
491 if (bus && !strcmp (bus->name, "pci"))
492 return RTE_DEV_TO_PCI (info->device);
497 /* If this device is VMBUS return pointer to info, otherwise NULL */
498 struct rte_vmbus_device *
499 dpdk_get_vmbus_device (const struct rte_eth_dev_info *info)
501 const struct rte_bus *bus;
503 bus = rte_bus_find_by_device (info->device);
504 if (bus && !strcmp (bus->name, "vmbus"))
505 return container_of (info->device, struct rte_vmbus_device, device);
511 * fd.io coding-style-patch-verification: ON
514 * eval: (c-set-style "gnu")