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-gre/packet.h>
25 #include <vnet/handoff.h>
27 #include "dpdk_priv.h"
30 #define MAX(a,b) ((a) < (b) ? (b) : (a))
34 #define MIN(a,b) ((a) < (b) ? (a) : (b))
38 * At least in certain versions of ESXi, vmware e1000's don't honor the
39 * "strip rx CRC" bit. Set this flag to work around that bug FOR UNIT TEST ONLY.
41 * If wireshark complains like so:
43 * "Frame check sequence: 0x00000000 [incorrect, should be <hex-num>]"
44 * and you're using ESXi emulated e1000's, set this flag FOR UNIT TEST ONLY.
46 * Note: do NOT check in this file with this workaround enabled! You'll lose
47 * actual data from e.g. 10xGE interfaces. The extra 4 bytes annoy
48 * wireshark, but they're harmless...
50 #define VMWARE_LENGTH_BUG_WORKAROUND 0
52 static char * dpdk_error_strings[] = {
59 dpdk_mbuf_is_ip4(struct rte_mbuf *mb)
61 #if RTE_VERSION >= RTE_VERSION_NUM(2, 1, 0, 0)
62 return RTE_ETH_IS_IPV4_HDR(mb->packet_type) != 0;
64 return (mb_flags & (PKT_RX_IPV4_HDR | PKT_RX_IPV4_HDR_EXT)) != 0;
69 dpdk_mbuf_is_ip6(struct rte_mbuf *mb)
71 #if RTE_VERSION >= RTE_VERSION_NUM(2, 1, 0, 0)
72 return RTE_ETH_IS_IPV6_HDR(mb->packet_type) != 0;
74 return (mb_flags & (PKT_RX_IPV6_HDR | PKT_RX_IPV6_HDR_EXT)) != 0;
79 vlib_buffer_is_mpls(vlib_buffer_t * b)
81 ethernet_header_t *h = (ethernet_header_t *) b->data;
82 return (h->type == clib_host_to_net_u16(ETHERNET_TYPE_MPLS_UNICAST));
86 dpdk_rx_next_and_error_from_mb_flags_x1 (dpdk_device_t *xd, struct rte_mbuf *mb,
88 u8 * next0, u8 * error0)
91 uint16_t mb_flags = mb->ol_flags;
93 if (PREDICT_FALSE(mb_flags & (
94 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
95 PKT_EXT_RX_PKT_ERROR | PKT_EXT_RX_BAD_FCS |
96 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
97 PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD
100 /* some error was flagged. determine the drop reason */
101 n0 = DPDK_RX_NEXT_DROP;
103 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
104 (mb_flags & PKT_EXT_RX_PKT_ERROR) ? DPDK_ERROR_RX_PACKET_ERROR :
105 (mb_flags & PKT_EXT_RX_BAD_FCS) ? DPDK_ERROR_RX_BAD_FCS :
106 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
107 (mb_flags & PKT_RX_IP_CKSUM_BAD) ? DPDK_ERROR_IP_CHECKSUM_ERROR :
108 (mb_flags & PKT_RX_L4_CKSUM_BAD) ? DPDK_ERROR_L4_CHECKSUM_ERROR :
113 *error0 = DPDK_ERROR_NONE;
114 if (PREDICT_FALSE(xd->per_interface_next_index != ~0))
116 n0 = xd->per_interface_next_index;
117 b0->flags |= BUFFER_HANDOFF_NEXT_VALID;
118 if (PREDICT_TRUE (dpdk_mbuf_is_ip4(mb)))
119 vnet_buffer(b0)->handoff.next_index = HANDOFF_DISPATCH_NEXT_IP4_INPUT;
120 else if (PREDICT_TRUE(dpdk_mbuf_is_ip6(mb)))
121 vnet_buffer(b0)->handoff.next_index = HANDOFF_DISPATCH_NEXT_IP6_INPUT;
122 else if (PREDICT_TRUE(vlib_buffer_is_mpls(b0)))
123 vnet_buffer(b0)->handoff.next_index = HANDOFF_DISPATCH_NEXT_MPLS_INPUT;
125 vnet_buffer(b0)->handoff.next_index = HANDOFF_DISPATCH_NEXT_ETHERNET_INPUT;
127 else if (PREDICT_FALSE(xd->vlan_subifs || (mb_flags & PKT_RX_VLAN_PKT)))
128 n0 = DPDK_RX_NEXT_ETHERNET_INPUT;
131 if (PREDICT_TRUE (dpdk_mbuf_is_ip4(mb)))
132 n0 = DPDK_RX_NEXT_IP4_INPUT;
133 else if (PREDICT_TRUE(dpdk_mbuf_is_ip6(mb)))
134 n0 = DPDK_RX_NEXT_IP6_INPUT;
135 else if (PREDICT_TRUE(vlib_buffer_is_mpls(b0)))
136 n0 = DPDK_RX_NEXT_MPLS_INPUT;
138 n0 = DPDK_RX_NEXT_ETHERNET_INPUT;
144 void dpdk_rx_trace (dpdk_main_t * dm,
145 vlib_node_runtime_t * node,
151 vlib_main_t * vm = vlib_get_main();
162 dpdk_rx_dma_trace_t * t0;
169 b0 = vlib_get_buffer (vm, bi0);
170 mb = rte_mbuf_from_vlib_buffer(b0);
171 dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb, b0,
173 vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 0);
174 t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
175 t0->queue_index = queue_id;
176 t0->device_index = xd->device_index;
177 t0->buffer_index = bi0;
179 clib_memcpy (&t0->mb, mb, sizeof (t0->mb));
180 clib_memcpy (&t0->buffer, b0, sizeof (b0[0]) - sizeof (b0->pre_data));
181 clib_memcpy (t0->buffer.pre_data, b0->data, sizeof (t0->buffer.pre_data));
182 clib_memcpy (&t0->data, mb->buf_addr + mb->data_off, sizeof (t0->data));
184 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
186 * Clear overloaded TX offload flags when a DPDK driver
187 * is using them for RX flags (e.g. Cisco VIC Ethernet driver)
189 mb->ol_flags &= PKT_EXT_RX_CLR_TX_FLAGS_MASK;
190 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
197 * dpdk_efd_update_counters()
198 * Update EFD (early-fast-discard) counters
200 void dpdk_efd_update_counters (dpdk_device_t *xd,
204 if (enabled & DPDK_EFD_MONITOR_ENABLED)
206 u64 now = clib_cpu_time_now();
207 if (xd->efd_agent.last_poll_time > 0)
209 u64 elapsed_time = (now - xd->efd_agent.last_poll_time);
210 if (elapsed_time > xd->efd_agent.max_poll_delay)
211 xd->efd_agent.max_poll_delay = elapsed_time;
213 xd->efd_agent.last_poll_time = now;
216 xd->efd_agent.total_packet_cnt += n_buffers;
217 xd->efd_agent.last_burst_sz = n_buffers;
219 if (n_buffers > xd->efd_agent.max_burst_sz)
220 xd->efd_agent.max_burst_sz = n_buffers;
222 if (PREDICT_FALSE(n_buffers == VLIB_FRAME_SIZE))
224 xd->efd_agent.full_frames_cnt++;
225 xd->efd_agent.consec_full_frames_cnt++;
229 xd->efd_agent.consec_full_frames_cnt = 0;
233 /* is_efd_discardable()
234 * returns non zero DPDK error if packet meets early-fast-discard criteria,
237 u32 is_efd_discardable (vlib_thread_main_t *tm,
241 ethernet_header_t *eh = (ethernet_header_t *) b0->data;
243 if (eh->type == clib_host_to_net_u16(ETHERNET_TYPE_IP4))
246 (ip4_header_t *)&(b0->data[sizeof(ethernet_header_t)]);
247 u8 pkt_prec = (ipv4->tos >> 5);
249 return (tm->efd.ip_prec_bitmap & (1 << pkt_prec) ?
250 DPDK_ERROR_IPV4_EFD_DROP_PKTS : DPDK_ERROR_NONE);
252 else if (eh->type == clib_net_to_host_u16(ETHERNET_TYPE_IP6))
255 (ip6_header_t *)&(b0->data[sizeof(ethernet_header_t)]);
257 ((ipv6->ip_version_traffic_class_and_flow_label >> 20) & 0xff);
259 return (tm->efd.ip_prec_bitmap & (1 << pkt_tclass) ?
260 DPDK_ERROR_IPV6_EFD_DROP_PKTS : DPDK_ERROR_NONE);
262 else if (eh->type == clib_net_to_host_u16(ETHERNET_TYPE_MPLS_UNICAST))
264 mpls_unicast_header_t *mpls =
265 (mpls_unicast_header_t *)&(b0->data[sizeof(ethernet_header_t)]);
266 u8 pkt_exp = ((mpls->label_exp_s_ttl >> 9) & 0x07);
268 return (tm->efd.mpls_exp_bitmap & (1 << pkt_exp) ?
269 DPDK_ERROR_MPLS_EFD_DROP_PKTS : DPDK_ERROR_NONE);
271 else if ((eh->type == clib_net_to_host_u16(ETHERNET_TYPE_VLAN)) ||
272 (eh->type == clib_net_to_host_u16(ETHERNET_TYPE_DOT1AD)))
274 ethernet_vlan_header_t *vlan =
275 (ethernet_vlan_header_t *)&(b0->data[sizeof(ethernet_header_t)]);
276 u8 pkt_cos = ((vlan->priority_cfi_and_id >> 13) & 0x07);
278 return (tm->efd.vlan_cos_bitmap & (1 << pkt_cos) ?
279 DPDK_ERROR_VLAN_EFD_DROP_PKTS : DPDK_ERROR_NONE);
282 return DPDK_ERROR_NONE;
286 * This function is used when there are no worker threads.
287 * The main thread performs IO and forwards the packets.
289 static inline u32 dpdk_device_input ( dpdk_main_t * dm,
291 vlib_node_runtime_t * node,
297 u32 next_index = DPDK_RX_NEXT_ETHERNET_INPUT;
298 u32 n_left_to_next, * to_next;
300 vlib_main_t * vm = vlib_get_main();
301 uword n_rx_bytes = 0;
302 u32 n_trace, trace_cnt __attribute__((unused));
303 vlib_buffer_free_list_t * fl;
304 u8 efd_discard_burst = 0;
305 u32 buffer_flags_template;
307 if (xd->admin_up == 0)
310 n_buffers = dpdk_rx_burst(dm, xd, queue_id);
314 /* check if EFD (dpdk) is enabled */
315 if (PREDICT_FALSE(use_efd && dm->efd.enabled))
317 /* reset a few stats */
318 xd->efd_agent.last_poll_time = 0;
319 xd->efd_agent.last_burst_sz = 0;
324 buffer_flags_template = dm->buffer_flags_template;
326 vec_reset_length (xd->d_trace_buffers);
327 trace_cnt = n_trace = vlib_get_trace_count (vm, node);
329 fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
332 * DAW-FIXME: VMXNET3 device stop/start doesn't work,
333 * therefore fake the stop in the dpdk driver by
334 * silently dropping all of the incoming pkts instead of
335 * stopping the driver / hardware.
337 if (PREDICT_FALSE(xd->admin_up != 1))
339 for (mb_index = 0; mb_index < n_buffers; mb_index++)
340 rte_pktmbuf_free (xd->rx_vectors[queue_id][mb_index]);
345 /* Check for congestion if EFD (Early-Fast-Discard) is enabled
346 * in any mode (e.g. dpdk, monitor, or drop_all)
348 if (PREDICT_FALSE(use_efd && dm->efd.enabled))
350 /* update EFD counters */
351 dpdk_efd_update_counters(xd, n_buffers, dm->efd.enabled);
353 if (PREDICT_FALSE(dm->efd.enabled & DPDK_EFD_DROPALL_ENABLED))
355 /* discard all received packets */
356 for (mb_index = 0; mb_index < n_buffers; mb_index++)
357 rte_pktmbuf_free(xd->rx_vectors[queue_id][mb_index]);
359 xd->efd_agent.discard_cnt += n_buffers;
360 increment_efd_drop_counter(vm,
361 DPDK_ERROR_VLAN_EFD_DROP_PKTS,
367 if (PREDICT_FALSE(xd->efd_agent.consec_full_frames_cnt >=
368 dm->efd.consec_full_frames_hi_thresh))
370 u32 device_queue_sz = rte_eth_rx_queue_count(xd->device_index,
372 if (device_queue_sz >= dm->efd.queue_hi_thresh)
374 /* dpdk device queue has reached the critical threshold */
375 xd->efd_agent.congestion_cnt++;
377 /* apply EFD to packets from the burst */
378 efd_discard_burst = 1;
385 while (n_buffers > 0)
390 vlib_buffer_t * b0, * b_seg, * b_chain = 0;
393 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
395 while (n_buffers > 0 && n_left_to_next > 0)
398 struct rte_mbuf *mb = xd->rx_vectors[queue_id][mb_index];
399 struct rte_mbuf *mb_seg = mb->next;
401 if (PREDICT_TRUE(n_buffers > 2))
403 struct rte_mbuf *pfmb = xd->rx_vectors[queue_id][mb_index+2];
404 vlib_buffer_t *bp = vlib_buffer_from_rte_mbuf(pfmb);
405 CLIB_PREFETCH (pfmb, CLIB_CACHE_LINE_BYTES, STORE);
406 CLIB_PREFETCH (bp, CLIB_CACHE_LINE_BYTES, STORE);
411 b0 = vlib_buffer_from_rte_mbuf(mb);
413 /* check whether EFD is looking for packets to discard */
414 if (PREDICT_FALSE(efd_discard_burst))
416 vlib_thread_main_t * tm = vlib_get_thread_main();
418 if (PREDICT_TRUE(cntr_type = is_efd_discardable(tm, b0, mb)))
420 rte_pktmbuf_free(mb);
421 xd->efd_agent.discard_cnt++;
422 increment_efd_drop_counter(vm,
431 /* Prefetch one next segment if it exists. */
432 if (PREDICT_FALSE(mb->nb_segs > 1))
434 struct rte_mbuf *pfmb = mb->next;
435 vlib_buffer_t *bp = vlib_buffer_from_rte_mbuf(pfmb);
436 CLIB_PREFETCH (pfmb, CLIB_CACHE_LINE_BYTES, LOAD);
437 CLIB_PREFETCH (bp, CLIB_CACHE_LINE_BYTES, STORE);
441 vlib_buffer_init_for_free_list (b0, fl);
444 bi0 = vlib_get_buffer_index (vm, b0);
450 dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb, b0,
452 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
454 * Clear overloaded TX offload flags when a DPDK driver
455 * is using them for RX flags (e.g. Cisco VIC Ethernet driver)
458 if (PREDICT_TRUE(trace_cnt == 0))
459 mb->ol_flags &= PKT_EXT_RX_CLR_TX_FLAGS_MASK;
462 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
464 b0->error = node->errors[error0];
466 l3_offset0 = ((next0 == DPDK_RX_NEXT_IP4_INPUT ||
467 next0 == DPDK_RX_NEXT_IP6_INPUT ||
468 next0 == DPDK_RX_NEXT_MPLS_INPUT) ?
469 sizeof (ethernet_header_t) : 0);
471 b0->current_data = l3_offset0;
472 /* Some drivers like fm10k receive frames with
473 mb->data_off > RTE_PKTMBUF_HEADROOM */
474 b0->current_data += mb->data_off - RTE_PKTMBUF_HEADROOM;
475 b0->current_length = mb->data_len - l3_offset0;
477 b0->flags = buffer_flags_template;
479 if (VMWARE_LENGTH_BUG_WORKAROUND)
480 b0->current_length -= 4;
482 vnet_buffer(b0)->sw_if_index[VLIB_RX] = xd->vlib_sw_if_index;
483 vnet_buffer(b0)->sw_if_index[VLIB_TX] = (u32)~0;
484 n_rx_bytes += mb->pkt_len;
486 /* Process subsequent segments of multi-segment packets */
487 while ((mb->nb_segs > 1) && (nb_seg < mb->nb_segs))
491 b_seg = vlib_buffer_from_rte_mbuf(mb_seg);
492 vlib_buffer_init_for_free_list (b_seg, fl);
493 b_seg->clone_count = 0;
495 ASSERT((b_seg->flags & VLIB_BUFFER_NEXT_PRESENT) == 0);
496 ASSERT(b_seg->current_data == 0);
499 * The driver (e.g. virtio) may not put the packet data at the start
500 * of the segment, so don't assume b_seg->current_data == 0 is correct.
502 b_seg->current_data = (mb_seg->buf_addr + mb_seg->data_off) - (void *)b_seg->data;
504 b_seg->current_length = mb_seg->data_len;
505 b0->total_length_not_including_first_buffer +=
508 b_chain->flags |= VLIB_BUFFER_NEXT_PRESENT;
509 b_chain->next_buffer = vlib_get_buffer_index (vm, b_seg);
512 mb_seg = mb_seg->next;
517 * Turn this on if you run into
518 * "bad monkey" contexts, and you want to know exactly
519 * which nodes they've visited... See main.c...
521 VLIB_BUFFER_TRACE_TRAJECTORY_INIT(b0);
523 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
524 to_next, n_left_to_next,
526 if (PREDICT_FALSE (n_trace > mb_index))
527 vec_add1 (xd->d_trace_buffers, bi0);
531 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
534 if (PREDICT_FALSE (vec_len (xd->d_trace_buffers) > 0))
536 dpdk_rx_trace (dm, node, xd, queue_id, xd->d_trace_buffers,
537 vec_len (xd->d_trace_buffers));
538 vlib_set_trace_count (vm, node, n_trace - vec_len (xd->d_trace_buffers));
541 vlib_increment_combined_counter
542 (vnet_get_main()->interface_main.combined_sw_if_counters
543 + VNET_INTERFACE_COUNTER_RX,
545 xd->vlib_sw_if_index,
546 mb_index, n_rx_bytes);
548 dpdk_worker_t * dw = vec_elt_at_index(dm->workers, cpu_index);
549 dw->aggregate_rx_packets += mb_index;
554 static inline void poll_rate_limit(dpdk_main_t * dm)
556 /* Limit the poll rate by sleeping for N msec between polls */
557 if (PREDICT_FALSE (dm->poll_sleep != 0))
559 struct timespec ts, tsrem;
562 ts.tv_nsec = 1000*1000*dm->poll_sleep; /* 1ms */
564 while (nanosleep(&ts, &tsrem) < 0)
572 dpdk_input (vlib_main_t * vm,
573 vlib_node_runtime_t * node,
576 dpdk_main_t * dm = &dpdk_main;
578 uword n_rx_packets = 0;
579 dpdk_device_and_queue_t * dq;
580 u32 cpu_index = os_get_cpu_number();
583 * Poll all devices on this cpu for input/interrupts.
585 vec_foreach (dq, dm->devices_by_cpu[cpu_index])
587 xd = vec_elt_at_index(dm->devices, dq->device);
588 ASSERT(dq->queue_id == 0);
589 n_rx_packets += dpdk_device_input (dm, xd, node, cpu_index, 0, 0);
598 dpdk_input_rss (vlib_main_t * vm,
599 vlib_node_runtime_t * node,
602 dpdk_main_t * dm = &dpdk_main;
604 uword n_rx_packets = 0;
605 dpdk_device_and_queue_t * dq;
606 u32 cpu_index = os_get_cpu_number();
609 * Poll all devices on this cpu for input/interrupts.
611 vec_foreach (dq, dm->devices_by_cpu[cpu_index])
613 xd = vec_elt_at_index(dm->devices, dq->device);
614 n_rx_packets += dpdk_device_input (dm, xd, node, cpu_index, dq->queue_id, 0);
623 dpdk_input_efd (vlib_main_t * vm,
624 vlib_node_runtime_t * node,
627 dpdk_main_t * dm = &dpdk_main;
629 uword n_rx_packets = 0;
630 dpdk_device_and_queue_t * dq;
631 u32 cpu_index = os_get_cpu_number();
634 * Poll all devices on this cpu for input/interrupts.
636 vec_foreach (dq, dm->devices_by_cpu[cpu_index])
638 xd = vec_elt_at_index(dm->devices, dq->device);
639 n_rx_packets += dpdk_device_input (dm, xd, node, cpu_index, dq->queue_id, 1);
648 VLIB_REGISTER_NODE (dpdk_input_node) = {
649 .function = dpdk_input,
650 .type = VLIB_NODE_TYPE_INPUT,
651 .name = "dpdk-input",
653 /* Will be enabled if/when hardware is detected. */
654 .state = VLIB_NODE_STATE_DISABLED,
656 .format_buffer = format_ethernet_header_with_length,
657 .format_trace = format_dpdk_rx_dma_trace,
659 .n_errors = DPDK_N_ERROR,
660 .error_strings = dpdk_error_strings,
662 .n_next_nodes = DPDK_RX_N_NEXT,
664 [DPDK_RX_NEXT_DROP] = "error-drop",
665 [DPDK_RX_NEXT_ETHERNET_INPUT] = "ethernet-input",
666 [DPDK_RX_NEXT_IP4_INPUT] = "ip4-input-no-checksum",
667 [DPDK_RX_NEXT_IP6_INPUT] = "ip6-input",
668 [DPDK_RX_NEXT_MPLS_INPUT] = "mpls-gre-input",
673 /* handle dpdk_input_rss alternative function */
674 VLIB_NODE_FUNCTION_MULTIARCH_CLONE(dpdk_input)
675 VLIB_NODE_FUNCTION_MULTIARCH_CLONE(dpdk_input_rss)
676 VLIB_NODE_FUNCTION_MULTIARCH_CLONE(dpdk_input_efd)
678 /* this macro defines dpdk_input_rss_multiarch_select() */
679 CLIB_MULTIARCH_SELECT_FN(dpdk_input);
680 CLIB_MULTIARCH_SELECT_FN(dpdk_input_rss);
681 CLIB_MULTIARCH_SELECT_FN(dpdk_input_efd);
684 * Override the next nodes for the dpdk input nodes.
685 * Must be invoked prior to VLIB_INIT_FUNCTION calls.
687 void dpdk_set_next_node (dpdk_rx_next_t next, char *name)
689 vlib_node_registration_t *r = &dpdk_input_node;
690 vlib_node_registration_t *r_handoff = &handoff_dispatch_node;
694 case DPDK_RX_NEXT_IP4_INPUT:
695 case DPDK_RX_NEXT_IP6_INPUT:
696 case DPDK_RX_NEXT_MPLS_INPUT:
697 case DPDK_RX_NEXT_ETHERNET_INPUT:
698 r->next_nodes[next] = name;
699 r_handoff->next_nodes[next] = name;
703 clib_warning ("%s: illegal next %d\n", __FUNCTION__, next);
710 * Based on the operation type, set lower/upper bits for the given index value
713 set_efd_bitmap (u8 *bitmap, u32 value, u32 op)
718 for (ix = 0; ix < 8; ix++) {
719 if (((op == EFD_OPERATION_LESS_THAN) && (ix < value)) ||
720 ((op == EFD_OPERATION_GREATER_OR_EQUAL) && (ix >= value))){
721 (*bitmap) |= (1 << ix);
727 efd_config (u32 enabled,
728 u32 ip_prec, u32 ip_op,
729 u32 mpls_exp, u32 mpls_op,
730 u32 vlan_cos, u32 vlan_op)
732 vlib_thread_main_t * tm = vlib_get_thread_main();
733 dpdk_main_t * dm = &dpdk_main;
736 tm->efd.enabled |= VLIB_EFD_DISCARD_ENABLED;
737 dm->efd.enabled |= DPDK_EFD_DISCARD_ENABLED;
739 tm->efd.enabled &= ~VLIB_EFD_DISCARD_ENABLED;
740 dm->efd.enabled &= ~DPDK_EFD_DISCARD_ENABLED;
743 set_efd_bitmap(&tm->efd.ip_prec_bitmap, ip_prec, ip_op);
744 set_efd_bitmap(&tm->efd.mpls_exp_bitmap, mpls_exp, mpls_op);
745 set_efd_bitmap(&tm->efd.vlan_cos_bitmap, vlan_cos, vlan_op);