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/xxhash.h>
21 #include <vnet/ethernet/ethernet.h>
22 #include <vnet/devices/dpdk/dpdk.h>
23 #include <vnet/classify/vnet_classify.h>
24 #include <vnet/mpls/packet.h>
25 #include <vnet/handoff.h>
26 #include <vnet/feature/feature.h>
28 #include "dpdk_priv.h"
31 #define MAX(a,b) ((a) < (b) ? (b) : (a))
35 #define MIN(a,b) ((a) < (b) ? (a) : (b))
39 * At least in certain versions of ESXi, vmware e1000's don't honor the
40 * "strip rx CRC" bit. Set this flag to work around that bug FOR UNIT TEST ONLY.
42 * If wireshark complains like so:
44 * "Frame check sequence: 0x00000000 [incorrect, should be <hex-num>]"
45 * and you're using ESXi emulated e1000's, set this flag FOR UNIT TEST ONLY.
47 * Note: do NOT check in this file with this workaround enabled! You'll lose
48 * actual data from e.g. 10xGE interfaces. The extra 4 bytes annoy
49 * wireshark, but they're harmless...
51 #define VMWARE_LENGTH_BUG_WORKAROUND 0
53 static char *dpdk_error_strings[] = {
60 dpdk_mbuf_is_ip4 (struct rte_mbuf *mb)
62 return RTE_ETH_IS_IPV4_HDR (mb->packet_type) != 0;
66 dpdk_mbuf_is_ip6 (struct rte_mbuf *mb)
68 return RTE_ETH_IS_IPV6_HDR (mb->packet_type) != 0;
72 vlib_buffer_is_mpls (vlib_buffer_t * b)
74 ethernet_header_t *h = (ethernet_header_t *) b->data;
75 return (h->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS_UNICAST));
79 dpdk_rx_next_and_error_from_mb_flags_x1 (dpdk_device_t * xd,
81 vlib_buffer_t * b0, u32 * next0,
85 uint16_t mb_flags = mb->ol_flags;
87 if (PREDICT_FALSE (mb_flags & (
88 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
89 PKT_EXT_RX_PKT_ERROR | PKT_EXT_RX_BAD_FCS |
90 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
91 PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD)))
93 /* some error was flagged. determine the drop reason */
94 n0 = DPDK_RX_NEXT_DROP;
96 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
97 (mb_flags & PKT_EXT_RX_PKT_ERROR) ? DPDK_ERROR_RX_PACKET_ERROR :
98 (mb_flags & PKT_EXT_RX_BAD_FCS) ? DPDK_ERROR_RX_BAD_FCS :
99 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
100 (mb_flags & PKT_RX_IP_CKSUM_BAD) ? DPDK_ERROR_IP_CHECKSUM_ERROR :
101 (mb_flags & PKT_RX_L4_CKSUM_BAD) ? DPDK_ERROR_L4_CHECKSUM_ERROR :
106 *error0 = DPDK_ERROR_NONE;
107 if (PREDICT_FALSE (xd->per_interface_next_index != ~0))
109 n0 = xd->per_interface_next_index;
110 b0->flags |= BUFFER_HANDOFF_NEXT_VALID;
111 if (PREDICT_TRUE (dpdk_mbuf_is_ip4 (mb)))
112 vnet_buffer (b0)->handoff.next_index =
113 HANDOFF_DISPATCH_NEXT_IP4_INPUT;
114 else if (PREDICT_TRUE (dpdk_mbuf_is_ip6 (mb)))
115 vnet_buffer (b0)->handoff.next_index =
116 HANDOFF_DISPATCH_NEXT_IP6_INPUT;
117 else if (PREDICT_TRUE (vlib_buffer_is_mpls (b0)))
118 vnet_buffer (b0)->handoff.next_index =
119 HANDOFF_DISPATCH_NEXT_MPLS_INPUT;
121 vnet_buffer (b0)->handoff.next_index =
122 HANDOFF_DISPATCH_NEXT_ETHERNET_INPUT;
125 if (PREDICT_FALSE ((xd->flags & DPDK_DEVICE_FLAG_HAVE_SUBIF) ||
126 (mb_flags & PKT_RX_VLAN_PKT)))
127 n0 = DPDK_RX_NEXT_ETHERNET_INPUT;
130 if (PREDICT_TRUE (dpdk_mbuf_is_ip4 (mb)))
131 n0 = DPDK_RX_NEXT_IP4_INPUT;
132 else if (PREDICT_TRUE (dpdk_mbuf_is_ip6 (mb)))
133 n0 = DPDK_RX_NEXT_IP6_INPUT;
134 else if (PREDICT_TRUE (vlib_buffer_is_mpls (b0)))
135 n0 = DPDK_RX_NEXT_MPLS_INPUT;
137 n0 = DPDK_RX_NEXT_ETHERNET_INPUT;
144 dpdk_rx_trace (dpdk_main_t * dm,
145 vlib_node_runtime_t * node,
147 u16 queue_id, u32 * buffers, uword n_buffers)
149 vlib_main_t *vm = vlib_get_main ();
160 dpdk_rx_dma_trace_t *t0;
167 b0 = vlib_get_buffer (vm, bi0);
168 mb = rte_mbuf_from_vlib_buffer (b0);
169 dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb, b0, &next0, &error0);
170 vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 0);
171 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
172 t0->queue_index = queue_id;
173 t0->device_index = xd->device_index;
174 t0->buffer_index = bi0;
176 clib_memcpy (&t0->mb, mb, sizeof (t0->mb));
177 clib_memcpy (&t0->buffer, b0, sizeof (b0[0]) - sizeof (b0->pre_data));
178 clib_memcpy (t0->buffer.pre_data, b0->data,
179 sizeof (t0->buffer.pre_data));
180 clib_memcpy (&t0->data, mb->buf_addr + mb->data_off, sizeof (t0->data));
182 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
184 * Clear overloaded TX offload flags when a DPDK driver
185 * is using them for RX flags (e.g. Cisco VIC Ethernet driver)
187 mb->ol_flags &= PKT_EXT_RX_CLR_TX_FLAGS_MASK;
188 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
195 * dpdk_efd_update_counters()
196 * Update EFD (early-fast-discard) counters
199 dpdk_efd_update_counters (dpdk_device_t * xd, u32 n_buffers, u16 enabled)
201 if (enabled & DPDK_EFD_MONITOR_ENABLED)
203 u64 now = clib_cpu_time_now ();
204 if (xd->efd_agent.last_poll_time > 0)
206 u64 elapsed_time = (now - xd->efd_agent.last_poll_time);
207 if (elapsed_time > xd->efd_agent.max_poll_delay)
208 xd->efd_agent.max_poll_delay = elapsed_time;
210 xd->efd_agent.last_poll_time = now;
213 xd->efd_agent.total_packet_cnt += n_buffers;
214 xd->efd_agent.last_burst_sz = n_buffers;
216 if (n_buffers > xd->efd_agent.max_burst_sz)
217 xd->efd_agent.max_burst_sz = n_buffers;
219 if (PREDICT_FALSE (n_buffers == VLIB_FRAME_SIZE))
221 xd->efd_agent.full_frames_cnt++;
222 xd->efd_agent.consec_full_frames_cnt++;
226 xd->efd_agent.consec_full_frames_cnt = 0;
230 /* is_efd_discardable()
231 * returns non zero DPDK error if packet meets early-fast-discard criteria,
235 is_efd_discardable (vlib_thread_main_t * tm,
236 vlib_buffer_t * b0, struct rte_mbuf *mb)
238 ethernet_header_t *eh = (ethernet_header_t *) b0->data;
240 if (eh->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP4))
243 (ip4_header_t *) & (b0->data[sizeof (ethernet_header_t)]);
244 u8 pkt_prec = (ipv4->tos >> 5);
246 return (tm->efd.ip_prec_bitmap & (1 << pkt_prec) ?
247 DPDK_ERROR_IPV4_EFD_DROP_PKTS : DPDK_ERROR_NONE);
249 else if (eh->type == clib_net_to_host_u16 (ETHERNET_TYPE_IP6))
252 (ip6_header_t *) & (b0->data[sizeof (ethernet_header_t)]);
254 ((ipv6->ip_version_traffic_class_and_flow_label >> 20) & 0xff);
256 return (tm->efd.ip_prec_bitmap & (1 << pkt_tclass) ?
257 DPDK_ERROR_IPV6_EFD_DROP_PKTS : DPDK_ERROR_NONE);
259 else if (eh->type == clib_net_to_host_u16 (ETHERNET_TYPE_MPLS_UNICAST))
261 mpls_unicast_header_t *mpls =
262 (mpls_unicast_header_t *) & (b0->data[sizeof (ethernet_header_t)]);
263 u8 pkt_exp = ((mpls->label_exp_s_ttl >> 9) & 0x07);
265 return (tm->efd.mpls_exp_bitmap & (1 << pkt_exp) ?
266 DPDK_ERROR_MPLS_EFD_DROP_PKTS : DPDK_ERROR_NONE);
268 else if ((eh->type == clib_net_to_host_u16 (ETHERNET_TYPE_VLAN)) ||
269 (eh->type == clib_net_to_host_u16 (ETHERNET_TYPE_DOT1AD)))
271 ethernet_vlan_header_t *vlan =
272 (ethernet_vlan_header_t *) & (b0->data[sizeof (ethernet_header_t)]);
273 u8 pkt_cos = ((vlan->priority_cfi_and_id >> 13) & 0x07);
275 return (tm->efd.vlan_cos_bitmap & (1 << pkt_cos) ?
276 DPDK_ERROR_VLAN_EFD_DROP_PKTS : DPDK_ERROR_NONE);
279 return DPDK_ERROR_NONE;
283 dpdk_rx_burst (dpdk_main_t * dm, dpdk_device_t * xd, u16 queue_id)
289 n_left = VLIB_FRAME_SIZE;
292 if (PREDICT_TRUE (xd->flags & DPDK_DEVICE_FLAG_PMD))
296 n_this_chunk = rte_eth_rx_burst (xd->device_index, queue_id,
297 xd->rx_vectors[queue_id] +
299 n_buffers += n_this_chunk;
300 n_left -= n_this_chunk;
302 /* Empirically, DPDK r1.8 produces vectors w/ 32 or fewer elts */
303 if (n_this_chunk < 32)
316 * This function is used when there are no worker threads.
317 * The main thread performs IO and forwards the packets.
320 dpdk_device_input (dpdk_main_t * dm,
322 vlib_node_runtime_t * node,
323 u32 cpu_index, u16 queue_id, int use_efd)
326 u32 next_index = DPDK_RX_NEXT_ETHERNET_INPUT;
327 u32 n_left_to_next, *to_next;
329 vlib_main_t *vm = vlib_get_main ();
330 uword n_rx_bytes = 0;
331 u32 n_trace, trace_cnt __attribute__ ((unused));
332 vlib_buffer_free_list_t *fl;
333 u8 efd_discard_burst = 0;
334 u32 buffer_flags_template;
336 if ((xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) == 0)
339 n_buffers = dpdk_rx_burst (dm, xd, queue_id);
343 /* check if EFD (dpdk) is enabled */
344 if (PREDICT_FALSE (use_efd && dm->efd.enabled))
346 /* reset a few stats */
347 xd->efd_agent.last_poll_time = 0;
348 xd->efd_agent.last_burst_sz = 0;
353 buffer_flags_template = dm->buffer_flags_template;
355 vec_reset_length (xd->d_trace_buffers);
356 trace_cnt = n_trace = vlib_get_trace_count (vm, node);
358 fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
360 /* Check for congestion if EFD (Early-Fast-Discard) is enabled
361 * in any mode (e.g. dpdk, monitor, or drop_all)
363 if (PREDICT_FALSE (use_efd && dm->efd.enabled))
365 /* update EFD counters */
366 dpdk_efd_update_counters (xd, n_buffers, dm->efd.enabled);
368 if (PREDICT_FALSE (dm->efd.enabled & DPDK_EFD_DROPALL_ENABLED))
370 /* discard all received packets */
371 for (mb_index = 0; mb_index < n_buffers; mb_index++)
372 rte_pktmbuf_free (xd->rx_vectors[queue_id][mb_index]);
374 xd->efd_agent.discard_cnt += n_buffers;
375 increment_efd_drop_counter (vm,
376 DPDK_ERROR_VLAN_EFD_DROP_PKTS,
382 if (PREDICT_FALSE (xd->efd_agent.consec_full_frames_cnt >=
383 dm->efd.consec_full_frames_hi_thresh))
385 u32 device_queue_sz = rte_eth_rx_queue_count (xd->device_index,
387 if (device_queue_sz >= dm->efd.queue_hi_thresh)
389 /* dpdk device queue has reached the critical threshold */
390 xd->efd_agent.congestion_cnt++;
392 /* apply EFD to packets from the burst */
393 efd_discard_burst = 1;
400 while (n_buffers > 0)
405 vlib_buffer_t *b0, *b_seg, *b_chain = 0;
408 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
410 while (n_buffers > 0 && n_left_to_next > 0)
413 struct rte_mbuf *mb = xd->rx_vectors[queue_id][mb_index];
414 struct rte_mbuf *mb_seg = mb->next;
416 if (PREDICT_TRUE (n_buffers > 2))
418 struct rte_mbuf *pfmb = xd->rx_vectors[queue_id][mb_index + 2];
419 vlib_buffer_t *bp = vlib_buffer_from_rte_mbuf (pfmb);
420 CLIB_PREFETCH (pfmb, CLIB_CACHE_LINE_BYTES, STORE);
421 CLIB_PREFETCH (bp, CLIB_CACHE_LINE_BYTES, STORE);
426 b0 = vlib_buffer_from_rte_mbuf (mb);
428 /* check whether EFD is looking for packets to discard */
429 if (PREDICT_FALSE (efd_discard_burst))
431 vlib_thread_main_t *tm = vlib_get_thread_main ();
433 if (PREDICT_TRUE (cntr_type = is_efd_discardable (tm, b0, mb)))
435 rte_pktmbuf_free (mb);
436 xd->efd_agent.discard_cnt++;
437 increment_efd_drop_counter (vm, cntr_type, 1);
444 /* Prefetch one next segment if it exists. */
445 if (PREDICT_FALSE (mb->nb_segs > 1))
447 struct rte_mbuf *pfmb = mb->next;
448 vlib_buffer_t *bp = vlib_buffer_from_rte_mbuf (pfmb);
449 CLIB_PREFETCH (pfmb, CLIB_CACHE_LINE_BYTES, LOAD);
450 CLIB_PREFETCH (bp, CLIB_CACHE_LINE_BYTES, STORE);
454 vlib_buffer_init_for_free_list (b0, fl);
456 bi0 = vlib_get_buffer_index (vm, b0);
462 dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb, b0,
464 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
466 * Clear overloaded TX offload flags when a DPDK driver
467 * is using them for RX flags (e.g. Cisco VIC Ethernet driver)
470 if (PREDICT_TRUE (trace_cnt == 0))
471 mb->ol_flags &= PKT_EXT_RX_CLR_TX_FLAGS_MASK;
474 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
476 b0->error = node->errors[error0];
478 l3_offset0 = ((next0 == DPDK_RX_NEXT_IP4_INPUT ||
479 next0 == DPDK_RX_NEXT_IP6_INPUT ||
480 next0 == DPDK_RX_NEXT_MPLS_INPUT) ?
481 sizeof (ethernet_header_t) : 0);
483 b0->current_data = l3_offset0;
484 /* Some drivers like fm10k receive frames with
485 mb->data_off > RTE_PKTMBUF_HEADROOM */
486 b0->current_data += mb->data_off - RTE_PKTMBUF_HEADROOM;
487 b0->current_length = mb->data_len - l3_offset0;
489 b0->flags = buffer_flags_template;
491 if (VMWARE_LENGTH_BUG_WORKAROUND)
492 b0->current_length -= 4;
494 vnet_buffer (b0)->sw_if_index[VLIB_RX] = xd->vlib_sw_if_index;
495 vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
496 n_rx_bytes += mb->pkt_len;
498 /* Process subsequent segments of multi-segment packets */
499 while ((mb->nb_segs > 1) && (nb_seg < mb->nb_segs))
501 ASSERT (mb_seg != 0);
503 b_seg = vlib_buffer_from_rte_mbuf (mb_seg);
504 vlib_buffer_init_for_free_list (b_seg, fl);
506 ASSERT ((b_seg->flags & VLIB_BUFFER_NEXT_PRESENT) == 0);
507 ASSERT (b_seg->current_data == 0);
510 * The driver (e.g. virtio) may not put the packet data at the start
511 * of the segment, so don't assume b_seg->current_data == 0 is correct.
513 b_seg->current_data =
514 (mb_seg->buf_addr + mb_seg->data_off) - (void *) b_seg->data;
516 b_seg->current_length = mb_seg->data_len;
517 b0->total_length_not_including_first_buffer += mb_seg->data_len;
519 b_chain->flags |= VLIB_BUFFER_NEXT_PRESENT;
520 b_chain->next_buffer = vlib_get_buffer_index (vm, b_seg);
523 mb_seg = mb_seg->next;
528 * Turn this on if you run into
529 * "bad monkey" contexts, and you want to know exactly
530 * which nodes they've visited... See main.c...
532 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
534 /* Do we have any driver RX features configured on the interface? */
535 vnet_feature_device_input_redirect_x1 (node, xd->vlib_sw_if_index, &next0, b0, l3_offset0);
537 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
538 to_next, n_left_to_next,
540 if (PREDICT_FALSE (n_trace > mb_index))
541 vec_add1 (xd->d_trace_buffers, bi0);
545 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
548 if (PREDICT_FALSE (vec_len (xd->d_trace_buffers) > 0))
550 dpdk_rx_trace (dm, node, xd, queue_id, xd->d_trace_buffers,
551 vec_len (xd->d_trace_buffers));
552 vlib_set_trace_count (vm, node,
553 n_trace - vec_len (xd->d_trace_buffers));
556 vlib_increment_combined_counter
557 (vnet_get_main ()->interface_main.combined_sw_if_counters
558 + VNET_INTERFACE_COUNTER_RX,
559 cpu_index, xd->vlib_sw_if_index, mb_index, n_rx_bytes);
561 dpdk_worker_t *dw = vec_elt_at_index (dm->workers, cpu_index);
562 dw->aggregate_rx_packets += mb_index;
568 poll_rate_limit (dpdk_main_t * dm)
570 /* Limit the poll rate by sleeping for N msec between polls */
571 if (PREDICT_FALSE (dm->poll_sleep != 0))
573 struct timespec ts, tsrem;
576 ts.tv_nsec = 1000 * 1000 * dm->poll_sleep; /* 1ms */
578 while (nanosleep (&ts, &tsrem) < 0)
585 /** \brief Main DPDK input node
588 This is the main DPDK input node: across each assigned interface,
589 call rte_eth_rx_burst(...) or similar to obtain a vector of
590 packets to process. Handle early packet discard. Derive @c
591 vlib_buffer_t metadata from <code>struct rte_mbuf</code> metadata,
592 Depending on the resulting metadata: adjust <code>b->current_data,
593 b->current_length </code> and dispatch directly to
594 ip4-input-no-checksum, or ip6-input. Trace the packet if required.
596 @param vm vlib_main_t corresponding to the current thread
597 @param node vlib_node_runtime_t
598 @param f vlib_frame_t input-node, not used.
600 @par Graph mechanics: buffer metadata, next index usage
603 - <code>struct rte_mbuf mb->ol_flags</code>
604 - PKT_EXT_RX_PKT_ERROR, PKT_EXT_RX_BAD_FCS
605 PKT_RX_IP_CKSUM_BAD, PKT_RX_L4_CKSUM_BAD
606 - <code> RTE_ETH_IS_xxx_HDR(mb->packet_type) </code>
607 - packet classification result
610 - <code>b->error</code> if the packet is to be dropped immediately
611 - <code>b->current_data, b->current_length</code>
612 - adjusted as needed to skip the L2 header in direct-dispatch cases
613 - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code>
614 - rx interface sw_if_index
615 - <code>vnet_buffer(b)->sw_if_index[VLIB_TX] = ~0</code>
616 - required by ipX-lookup
617 - <code>b->flags</code>
618 - to indicate multi-segment pkts (VLIB_BUFFER_NEXT_PRESENT), etc.
621 - Static arcs to: error-drop, ethernet-input,
622 ip4-input-no-checksum, ip6-input, mpls-input
623 - per-interface redirection, controlled by
624 <code>xd->per_interface_next_index</code>
628 dpdk_input (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * f)
630 dpdk_main_t *dm = &dpdk_main;
632 uword n_rx_packets = 0;
633 dpdk_device_and_queue_t *dq;
634 u32 cpu_index = os_get_cpu_number ();
637 * Poll all devices on this cpu for input/interrupts.
640 vec_foreach (dq, dm->devices_by_cpu[cpu_index])
642 xd = vec_elt_at_index(dm->devices, dq->device);
643 ASSERT(dq->queue_id == 0);
644 n_rx_packets += dpdk_device_input (dm, xd, node, cpu_index, 0, 0);
648 poll_rate_limit (dm);
654 dpdk_input_rss (vlib_main_t * vm,
655 vlib_node_runtime_t * node, vlib_frame_t * f)
657 dpdk_main_t *dm = &dpdk_main;
659 uword n_rx_packets = 0;
660 dpdk_device_and_queue_t *dq;
661 u32 cpu_index = os_get_cpu_number ();
664 * Poll all devices on this cpu for input/interrupts.
667 vec_foreach (dq, dm->devices_by_cpu[cpu_index])
669 xd = vec_elt_at_index(dm->devices, dq->device);
670 n_rx_packets += dpdk_device_input (dm, xd, node, cpu_index, dq->queue_id, 0);
674 poll_rate_limit (dm);
680 dpdk_input_efd (vlib_main_t * vm,
681 vlib_node_runtime_t * node, vlib_frame_t * f)
683 dpdk_main_t *dm = &dpdk_main;
685 uword n_rx_packets = 0;
686 dpdk_device_and_queue_t *dq;
687 u32 cpu_index = os_get_cpu_number ();
690 * Poll all devices on this cpu for input/interrupts.
693 vec_foreach (dq, dm->devices_by_cpu[cpu_index])
695 xd = vec_elt_at_index(dm->devices, dq->device);
696 n_rx_packets += dpdk_device_input (dm, xd, node, cpu_index, dq->queue_id, 1);
700 poll_rate_limit (dm);
706 VLIB_REGISTER_NODE (dpdk_input_node) = {
707 .function = dpdk_input,
708 .type = VLIB_NODE_TYPE_INPUT,
709 .name = "dpdk-input",
711 /* Will be enabled if/when hardware is detected. */
712 .state = VLIB_NODE_STATE_DISABLED,
714 .format_buffer = format_ethernet_header_with_length,
715 .format_trace = format_dpdk_rx_dma_trace,
717 .n_errors = DPDK_N_ERROR,
718 .error_strings = dpdk_error_strings,
720 .n_next_nodes = DPDK_RX_N_NEXT,
722 [DPDK_RX_NEXT_DROP] = "error-drop",
723 [DPDK_RX_NEXT_ETHERNET_INPUT] = "ethernet-input",
724 [DPDK_RX_NEXT_IP4_INPUT] = "ip4-input-no-checksum",
725 [DPDK_RX_NEXT_IP6_INPUT] = "ip6-input",
726 [DPDK_RX_NEXT_MPLS_INPUT] = "mpls-input",
731 /* handle dpdk_input_rss alternative function */
732 VLIB_NODE_FUNCTION_MULTIARCH_CLONE(dpdk_input)
733 VLIB_NODE_FUNCTION_MULTIARCH_CLONE(dpdk_input_rss)
734 VLIB_NODE_FUNCTION_MULTIARCH_CLONE(dpdk_input_efd)
736 /* this macro defines dpdk_input_rss_multiarch_select() */
737 CLIB_MULTIARCH_SELECT_FN(dpdk_input);
738 CLIB_MULTIARCH_SELECT_FN(dpdk_input_rss);
739 CLIB_MULTIARCH_SELECT_FN(dpdk_input_efd);
742 * Override the next nodes for the dpdk input nodes.
743 * Must be invoked prior to VLIB_INIT_FUNCTION calls.
746 dpdk_set_next_node (dpdk_rx_next_t next, char *name)
748 vlib_node_registration_t *r = &dpdk_input_node;
749 vlib_node_registration_t *r_handoff = &handoff_dispatch_node;
753 case DPDK_RX_NEXT_IP4_INPUT:
754 case DPDK_RX_NEXT_IP6_INPUT:
755 case DPDK_RX_NEXT_MPLS_INPUT:
756 case DPDK_RX_NEXT_ETHERNET_INPUT:
757 r->next_nodes[next] = name;
758 r_handoff->next_nodes[next] = name;
762 clib_warning ("%s: illegal next %d\n", __FUNCTION__, next);
769 * Based on the operation type, set lower/upper bits for the given index value
772 set_efd_bitmap (u8 * bitmap, u32 value, u32 op)
777 for (ix = 0; ix < 8; ix++)
779 if (((op == EFD_OPERATION_LESS_THAN) && (ix < value)) ||
780 ((op == EFD_OPERATION_GREATER_OR_EQUAL) && (ix >= value)))
782 (*bitmap) |= (1 << ix);
788 efd_config (u32 enabled,
789 u32 ip_prec, u32 ip_op,
790 u32 mpls_exp, u32 mpls_op, u32 vlan_cos, u32 vlan_op)
792 vlib_thread_main_t *tm = vlib_get_thread_main ();
793 dpdk_main_t *dm = &dpdk_main;
797 tm->efd.enabled |= VLIB_EFD_DISCARD_ENABLED;
798 dm->efd.enabled |= DPDK_EFD_DISCARD_ENABLED;
802 tm->efd.enabled &= ~VLIB_EFD_DISCARD_ENABLED;
803 dm->efd.enabled &= ~DPDK_EFD_DISCARD_ENABLED;
806 set_efd_bitmap (&tm->efd.ip_prec_bitmap, ip_prec, ip_op);
807 set_efd_bitmap (&tm->efd.mpls_exp_bitmap, mpls_exp, mpls_op);
808 set_efd_bitmap (&tm->efd.vlan_cos_bitmap, vlan_cos, vlan_op);