2 *------------------------------------------------------------------
3 * Copyright (c) 2017 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
20 #include <vnet/ethernet/ethernet.h>
21 #include <vnet/ip/ip4_packet.h>
22 #include <vnet/ip/ip6_packet.h>
23 #include <vnet/ip/ip6_hop_by_hop_packet.h>
24 #include <vnet/bonding/node.h>
26 #define foreach_bond_tx_error \
28 _(IF_DOWN, "interface down") \
29 _(NO_SLAVE, "no slave")
33 #define _(f,s) BOND_TX_ERROR_##f,
39 static char *bond_tx_error_strings[] = {
46 format_bond_tx_trace (u8 * s, va_list * args)
48 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
49 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
50 bond_packet_trace_t *t = va_arg (*args, bond_packet_trace_t *);
51 vnet_hw_interface_t *hw, *hw1;
52 vnet_main_t *vnm = vnet_get_main ();
54 hw = vnet_get_sup_hw_interface (vnm, t->sw_if_index);
55 hw1 = vnet_get_sup_hw_interface (vnm, t->bond_sw_if_index);
56 s = format (s, "src %U, dst %U, %s -> %s",
57 format_ethernet_address, t->ethernet.src_address,
58 format_ethernet_address, t->ethernet.dst_address,
65 format_bond_interface_name (u8 * s, va_list * args)
67 u32 dev_instance = va_arg (*args, u32);
68 bond_main_t *bm = &bond_main;
69 bond_if_t *bif = pool_elt_at_index (bm->interfaces, dev_instance);
71 s = format (s, "BondEthernet%lu", bif->dev_instance);
76 static __clib_unused clib_error_t *
77 bond_subif_add_del_function (vnet_main_t * vnm, u32 hw_if_index,
78 struct vnet_sw_interface_t *st, int is_add)
85 bond_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
87 vnet_hw_interface_t *hif = vnet_get_hw_interface (vnm, hw_if_index);
88 uword is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
89 bond_main_t *bm = &bond_main;
90 bond_if_t *bif = pool_elt_at_index (bm->interfaces, hif->dev_instance);
92 bif->admin_up = is_up;
93 if (is_up && vec_len (bif->active_slaves))
94 vnet_hw_interface_set_flags (vnm, bif->hw_if_index,
95 VNET_HW_INTERFACE_FLAG_LINK_UP);
100 bond_load_balance_broadcast (vlib_main_t * vm, vlib_node_runtime_t * node,
101 bond_if_t * bif, vlib_buffer_t * b0)
103 vnet_main_t *vnm = vnet_get_main ();
111 for (i = 1; i < vec_len (bif->active_slaves); i++)
113 sw_if_index = *vec_elt_at_index (bif->active_slaves, i);
114 f = vnet_get_frame_to_sw_interface (vnm, sw_if_index);
115 to_next = vlib_frame_vector_args (f);
116 to_next += f->n_vectors;
117 c0 = vlib_buffer_copy (vm, b0);
118 if (PREDICT_TRUE (c0 != 0))
120 vnet_buffer (c0)->sw_if_index[VLIB_TX] = sw_if_index;
121 to_next[0] = vlib_get_buffer_index (vm, c0);
123 vnet_put_frame_to_sw_interface (vnm, sw_if_index, f);
131 bond_load_balance_l2 (vlib_main_t * vm, vlib_node_runtime_t * node,
132 bond_if_t * bif, vlib_buffer_t * b0)
134 ethernet_header_t *eth = (ethernet_header_t *) vlib_buffer_get_current (b0);
135 u32 a = 0, b = 0, c = 0, t1, t2;
138 memcpy (&t1, eth->src_address, sizeof (t1));
139 memcpy (&t11, ð->src_address[4], sizeof (t11));
142 memcpy (&t2, eth->dst_address, sizeof (t2));
143 memcpy (&t22, ð->dst_address[4], sizeof (t22));
146 hash_v3_mix32 (a, b, c);
147 hash_v3_finalize32 (a, b, c);
149 return c % vec_len (bif->active_slaves);
153 bond_locate_ethertype (ethernet_header_t * eth)
156 ethernet_vlan_header_t *vlan;
158 if (!ethernet_frame_is_tagged (clib_net_to_host_u16 (eth->type)))
160 ethertype_p = ð->type;
164 vlan = (void *) (eth + 1);
165 ethertype_p = &vlan->type;
166 if (*ethertype_p == ntohs (ETHERNET_TYPE_VLAN))
169 ethertype_p = &vlan->type;
176 bond_load_balance_l23 (vlib_main_t * vm, vlib_node_runtime_t * node,
177 bond_if_t * bif, vlib_buffer_t * b0)
179 ethernet_header_t *eth = (ethernet_header_t *) vlib_buffer_get_current (b0);
182 u16 ethertype, *ethertype_p;
184 ethertype_p = bond_locate_ethertype (eth);
185 ethertype = *ethertype_p;
187 if ((ethertype != htons (ETHERNET_TYPE_IP4)) &&
188 (ethertype != htons (ETHERNET_TYPE_IP6)))
189 return (bond_load_balance_l2 (vm, node, bif, b0));
191 ip4 = (ip4_header_t *) (ethertype_p + 1);
192 ip_version = (ip4->ip_version_and_header_length >> 4);
194 if (ip_version == 0x4)
197 u32 a = 0, b = 0, c = 0, t1, t2;
199 memcpy (&t1, eth->src_address, sizeof (t1));
200 memcpy (&t11, ð->src_address[4], sizeof (t11));
203 memcpy (&t2, eth->dst_address, sizeof (t2));
204 memcpy (&t22, ð->dst_address[4], sizeof (t22));
207 c = ip4->src_address.data_u32 ^ ip4->dst_address.data_u32;
209 hash_v3_mix32 (a, b, c);
210 hash_v3_finalize32 (a, b, c);
212 return c % vec_len (bif->active_slaves);
214 else if (ip_version == 0x6)
218 ip6_header_t *ip6 = (ip6_header_t *) (eth + 1);
220 memcpy (&t1, eth->src_address, sizeof (eth->src_address));
221 memcpy (&t2, eth->dst_address, sizeof (eth->dst_address));
224 b = (ip6->src_address.as_u64[0] ^ ip6->src_address.as_u64[1]);
225 c = (ip6->dst_address.as_u64[0] ^ ip6->dst_address.as_u64[1]);
227 hash_mix64 (a, b, c);
228 return c % vec_len (bif->active_slaves);
230 return (bond_load_balance_l2 (vm, node, bif, b0));
234 bond_load_balance_l34 (vlib_main_t * vm, vlib_node_runtime_t * node,
235 bond_if_t * bif, vlib_buffer_t * b0)
237 ethernet_header_t *eth = (ethernet_header_t *) vlib_buffer_get_current (b0);
239 uword is_tcp_udp = 0;
241 u16 ethertype, *ethertype_p;
243 ethertype_p = bond_locate_ethertype (eth);
244 ethertype = *ethertype_p;
246 if ((ethertype != htons (ETHERNET_TYPE_IP4)) &&
247 (ethertype != htons (ETHERNET_TYPE_IP6)))
248 return (bond_load_balance_l2 (vm, node, bif, b0));
250 ip4 = (ip4_header_t *) (ethertype_p + 1);
251 ip_version = (ip4->ip_version_and_header_length >> 4);
253 if (ip_version == 0x4)
255 u32 a = 0, b = 0, c = 0, t1, t2;
256 tcp_header_t *tcp = (void *) (ip4 + 1);
257 is_tcp_udp = (ip4->protocol == IP_PROTOCOL_TCP) ||
258 (ip4->protocol == IP_PROTOCOL_UDP);
260 a = ip4->src_address.data_u32 ^ ip4->dst_address.data_u32;
262 t1 = is_tcp_udp ? tcp->src : 0;
263 t2 = is_tcp_udp ? tcp->dst : 0;
266 hash_v3_mix32 (a, b, c);
267 hash_v3_finalize32 (a, b, c);
269 return c % vec_len (bif->active_slaves);
271 else if (ip_version == 0x6)
275 ip6_header_t *ip6 = (ip6_header_t *) (eth + 1);
276 tcp_header_t *tcp = (void *) (ip6 + 1);
278 if (PREDICT_TRUE ((ip6->protocol == IP_PROTOCOL_TCP) ||
279 (ip6->protocol == IP_PROTOCOL_UDP)))
282 tcp = (void *) (ip6 + 1);
284 else if (ip6->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)
286 ip6_hop_by_hop_header_t *hbh =
287 (ip6_hop_by_hop_header_t *) (ip6 + 1);
288 if ((hbh->protocol == IP_PROTOCOL_TCP)
289 || (hbh->protocol == IP_PROTOCOL_UDP))
292 tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3));
295 a = (ip6->src_address.as_u64[0] ^ ip6->src_address.as_u64[1]);
296 b = (ip6->dst_address.as_u64[0] ^ ip6->dst_address.as_u64[1]);
298 t1 = is_tcp_udp ? tcp->src : 0;
299 t2 = is_tcp_udp ? tcp->dst : 0;
301 hash_mix64 (a, b, c);
303 return c % vec_len (bif->active_slaves);
306 return (bond_load_balance_l2 (vm, node, bif, b0));
310 bond_load_balance_round_robin (vlib_main_t * vm,
311 vlib_node_runtime_t * node,
312 bond_if_t * bif, vlib_buffer_t * b0)
314 bif->lb_rr_last_index++;
315 bif->lb_rr_last_index %= vec_len (bif->active_slaves);
317 return bif->lb_rr_last_index;
321 bond_load_balance_active_backup (vlib_main_t * vm,
322 vlib_node_runtime_t * node,
323 bond_if_t * bif, vlib_buffer_t * b0)
325 /* First interface is the active, the rest is backup */
329 static bond_load_balance_func_t bond_load_balance_table[] = {
330 #define _(v,f,s, p) { bond_load_balance_##p },
336 bond_tx_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
337 vlib_frame_t * frame)
339 vnet_interface_output_runtime_t *rund = (void *) node->runtime_data;
340 bond_main_t *bm = &bond_main;
341 bond_if_t *bif = pool_elt_at_index (bm->interfaces, rund->dev_instance);
342 u32 bi0, bi1, bi2, bi3;
343 vlib_buffer_t *b0, *b1, *b2, *b3;
344 u32 *from = vlib_frame_vector_args (frame);
346 ethernet_header_t *eth;
347 u32 next0 = 0, next1 = 0, next2 = 0, next3 = 0;
348 u32 port, port1, port2, port3;
349 u32 sw_if_index, sw_if_index1, sw_if_index2, sw_if_index3;
350 bond_packet_trace_t *t0;
351 uword n_trace = vlib_get_trace_count (vm, node);
352 u16 thread_index = vlib_get_thread_index ();
353 vnet_main_t *vnm = vnet_get_main ();
355 u32 sif_if_index, sif_if_index1, sif_if_index2, sif_if_index3;
358 if (PREDICT_FALSE (bif->admin_up == 0))
360 vlib_buffer_free (vm, vlib_frame_args (frame), frame->n_vectors);
361 vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters +
362 VNET_INTERFACE_COUNTER_DROP,
363 thread_index, bif->sw_if_index,
365 vlib_error_count (vm, node->node_index, BOND_TX_ERROR_IF_DOWN,
367 return frame->n_vectors;
370 clib_spinlock_lock_if_init (&bif->lockp);
371 if (PREDICT_FALSE (vec_len (bif->active_slaves) == 0))
374 b0 = vlib_get_buffer (vm, bi0);
375 vlib_increment_combined_counter
376 (vnet_main.interface_main.combined_sw_if_counters
377 + VNET_INTERFACE_COUNTER_TX, thread_index, bif->sw_if_index,
378 frame->n_vectors, b0->current_length);
380 vlib_buffer_free (vm, vlib_frame_args (frame), frame->n_vectors);
381 vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters +
382 VNET_INTERFACE_COUNTER_DROP,
383 thread_index, bif->sw_if_index,
385 vlib_error_count (vm, node->node_index, BOND_TX_ERROR_NO_SLAVE,
387 clib_spinlock_unlock_if_init (&bif->lockp);
388 return frame->n_vectors;
391 vec_validate_aligned (bif->per_thread_info[thread_index].frame,
392 vec_len (bif->active_slaves), CLIB_CACHE_LINE_BYTES);
394 /* Number of buffers / pkts */
395 n_left_from = frame->n_vectors;
397 while (n_left_from > 0)
399 while (n_left_from >= 4)
401 // Prefetch next iteration
402 if (n_left_from >= 8)
404 vlib_buffer_t *p4, *p5, *p6, *p7;
406 p4 = vlib_get_buffer (vm, from[4]);
407 p5 = vlib_get_buffer (vm, from[5]);
408 p6 = vlib_get_buffer (vm, from[6]);
409 p7 = vlib_get_buffer (vm, from[7]);
411 vlib_prefetch_buffer_header (p4, STORE);
412 vlib_prefetch_buffer_header (p5, STORE);
413 vlib_prefetch_buffer_header (p6, STORE);
414 vlib_prefetch_buffer_header (p7, STORE);
416 CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, LOAD);
417 CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, LOAD);
418 CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, LOAD);
419 CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, LOAD);
427 b0 = vlib_get_buffer (vm, bi0);
428 b1 = vlib_get_buffer (vm, bi1);
429 b2 = vlib_get_buffer (vm, bi2);
430 b3 = vlib_get_buffer (vm, bi3);
432 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
433 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
434 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2);
435 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3);
437 sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
438 sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
439 sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_TX];
440 sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_TX];
443 (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif,
446 (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif,
449 (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif,
452 (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif,
455 sif_if_index = *vec_elt_at_index (bif->active_slaves, port);
456 sif_if_index1 = *vec_elt_at_index (bif->active_slaves, port1);
457 sif_if_index2 = *vec_elt_at_index (bif->active_slaves, port2);
458 sif_if_index3 = *vec_elt_at_index (bif->active_slaves, port3);
460 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sif_if_index;
461 vnet_buffer (b1)->sw_if_index[VLIB_TX] = sif_if_index1;
462 vnet_buffer (b2)->sw_if_index[VLIB_TX] = sif_if_index2;
463 vnet_buffer (b3)->sw_if_index[VLIB_TX] = sif_if_index3;
465 if (bif->per_thread_info[thread_index].frame[port] == 0)
466 bif->per_thread_info[thread_index].frame[port] =
467 vnet_get_frame_to_sw_interface (vnm, sif_if_index);
469 if (bif->per_thread_info[thread_index].frame[port1] == 0)
470 bif->per_thread_info[thread_index].frame[port1] =
471 vnet_get_frame_to_sw_interface (vnm, sif_if_index1);
473 if (bif->per_thread_info[thread_index].frame[port2] == 0)
474 bif->per_thread_info[thread_index].frame[port2] =
475 vnet_get_frame_to_sw_interface (vnm, sif_if_index2);
477 if (bif->per_thread_info[thread_index].frame[port3] == 0)
478 bif->per_thread_info[thread_index].frame[port3] =
479 vnet_get_frame_to_sw_interface (vnm, sif_if_index3);
481 f = bif->per_thread_info[thread_index].frame[port];
482 to_next = vlib_frame_vector_args (f);
483 to_next += f->n_vectors;
484 to_next[0] = vlib_get_buffer_index (vm, b0);
487 f = bif->per_thread_info[thread_index].frame[port1];
488 to_next = vlib_frame_vector_args (f);
489 to_next += f->n_vectors;
490 to_next[0] = vlib_get_buffer_index (vm, b1);
493 f = bif->per_thread_info[thread_index].frame[port2];
494 to_next = vlib_frame_vector_args (f);
495 to_next += f->n_vectors;
496 to_next[0] = vlib_get_buffer_index (vm, b2);
499 f = bif->per_thread_info[thread_index].frame[port3];
500 to_next = vlib_frame_vector_args (f);
501 to_next += f->n_vectors;
502 to_next[0] = vlib_get_buffer_index (vm, b3);
505 if (PREDICT_FALSE (n_trace > 0))
507 vlib_trace_buffer (vm, node, next0, b0, 0 /* follow_chain */ );
508 vlib_set_trace_count (vm, node, --n_trace);
509 t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
510 eth = (ethernet_header_t *) vlib_buffer_get_current (b0);
512 t0->sw_if_index = sw_if_index;
513 t0->bond_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
515 if (PREDICT_TRUE (n_trace > 0))
517 vlib_trace_buffer (vm, node, next1, b1,
518 0 /* follow_chain */ );
519 vlib_set_trace_count (vm, node, --n_trace);
520 t0 = vlib_add_trace (vm, node, b1, sizeof (*t0));
521 eth = (ethernet_header_t *) vlib_buffer_get_current (b1);
523 t0->sw_if_index = sw_if_index1;
524 t0->bond_sw_if_index =
525 vnet_buffer (b1)->sw_if_index[VLIB_TX];
527 if (PREDICT_TRUE (n_trace > 0))
529 vlib_trace_buffer (vm, node, next2, b2,
530 0 /* follow_chain */ );
531 vlib_set_trace_count (vm, node, --n_trace);
532 t0 = vlib_add_trace (vm, node, b2, sizeof (*t0));
534 (ethernet_header_t *) vlib_buffer_get_current (b2);
536 t0->sw_if_index = sw_if_index2;
537 t0->bond_sw_if_index =
538 vnet_buffer (b2)->sw_if_index[VLIB_TX];
540 if (PREDICT_TRUE (n_trace > 0))
542 vlib_trace_buffer (vm, node, next3, b3,
543 0 /* follow_chain */ );
544 vlib_set_trace_count (vm, node, --n_trace);
545 t0 = vlib_add_trace (vm, node, b3, sizeof (*t0));
547 (ethernet_header_t *)
548 vlib_buffer_get_current (b3);
550 t0->sw_if_index = sw_if_index3;
551 t0->bond_sw_if_index =
552 vnet_buffer (b3)->sw_if_index[VLIB_TX];
561 while (n_left_from > 0)
563 // Prefetch next iteration
568 p2 = vlib_get_buffer (vm, from[1]);
569 vlib_prefetch_buffer_header (p2, STORE);
570 CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
574 b0 = vlib_get_buffer (vm, bi0);
576 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
578 sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
581 (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif,
583 sif_if_index = *vec_elt_at_index (bif->active_slaves, port);
584 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sif_if_index;
585 if (bif->per_thread_info[thread_index].frame[port] == 0)
586 bif->per_thread_info[thread_index].frame[port] =
587 vnet_get_frame_to_sw_interface (vnm, sif_if_index);
588 f = bif->per_thread_info[thread_index].frame[port];
589 to_next = vlib_frame_vector_args (f);
590 to_next += f->n_vectors;
591 to_next[0] = vlib_get_buffer_index (vm, b0);
594 if (PREDICT_FALSE (n_trace > 0))
596 vlib_trace_buffer (vm, node, next0, b0, 0 /* follow_chain */ );
597 vlib_set_trace_count (vm, node, --n_trace);
598 t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
599 eth = (ethernet_header_t *) vlib_buffer_get_current (b0);
601 t0->sw_if_index = sw_if_index;
602 t0->bond_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
610 for (port = 0; port < vec_len (bif->active_slaves); port++)
612 f = bif->per_thread_info[thread_index].frame[port];
616 sw_if_index = *vec_elt_at_index (bif->active_slaves, port);
617 vnet_put_frame_to_sw_interface (vnm, sw_if_index, f);
618 bif->per_thread_info[thread_index].frame[port] = 0;
621 vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters
622 + VNET_INTERFACE_COUNTER_TX, thread_index,
623 bif->sw_if_index, frame->n_vectors);
625 clib_spinlock_unlock_if_init (&bif->lockp);
626 return frame->n_vectors;
630 VNET_DEVICE_CLASS (bond_dev_class) = {
632 .tx_function = bond_tx_fn,
633 .tx_function_n_errors = BOND_TX_N_ERROR,
634 .tx_function_error_strings = bond_tx_error_strings,
635 .format_device_name = format_bond_interface_name,
636 .admin_up_down_function = bond_interface_admin_up_down,
637 .subif_add_del_function = bond_subif_add_del_function,
638 .format_tx_trace = format_bond_tx_trace,
641 VLIB_DEVICE_TX_FUNCTION_MULTIARCH (bond_dev_class, bond_tx_fn)
645 * fd.io coding-style-patch-verification: ON
648 * eval: (c-set-style "gnu")