2 * Copyright (c) 2018 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 <vlib/vlib.h>
17 #include <vnet/vnet.h>
18 #include <vppinfra/error.h>
19 #include <vnet/ethernet/ethernet.h>
20 #include <vnet/feature/feature.h>
21 #include <vnet/gso/gso.h>
22 #include <vnet/gso/hdr_offset_parser.h>
23 #include <vnet/ip/icmp46_packet.h>
24 #include <vnet/ip/ip4.h>
25 #include <vnet/ip/ip6.h>
26 #include <vnet/udp/udp_packet.h>
33 generic_header_offset_t gho;
37 format_gso_trace (u8 * s, va_list * args)
39 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
40 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
41 gso_trace_t *t = va_arg (*args, gso_trace_t *);
43 if (t->flags & VNET_BUFFER_F_GSO)
45 s = format (s, "gso_sz %d gso_l4_hdr_sz %d %U",
46 t->gso_size, t->gso_l4_hdr_sz, format_generic_header_offset,
52 format (s, "non-gso buffer %U", format_generic_header_offset,
59 static_always_inline void
60 tso_segment_vxlan_tunnel_headers_fixup (vlib_main_t * vm, vlib_buffer_t * b,
61 generic_header_offset_t * gho)
64 ip4_header_t *ip4 = 0;
65 ip6_header_t *ip6 = 0;
66 udp_header_t *udp = 0;
69 (ip4_header_t *) (vlib_buffer_get_current (b) + gho->outer_l3_hdr_offset);
71 (ip6_header_t *) (vlib_buffer_get_current (b) + gho->outer_l3_hdr_offset);
73 (udp_header_t *) (vlib_buffer_get_current (b) + gho->outer_l4_hdr_offset);
75 if (gho->gho_flags & GHO_F_OUTER_IP4)
77 proto = ip4->protocol;
79 clib_host_to_net_u16 (b->current_length - gho->outer_l3_hdr_offset);
80 ip4->checksum = ip4_header_checksum (ip4);
82 else if (gho->gho_flags & GHO_F_OUTER_IP6)
84 proto = ip6->protocol;
86 clib_host_to_net_u16 (b->current_length - gho->outer_l4_hdr_offset);
88 if (proto == IP_PROTOCOL_UDP)
92 clib_host_to_net_u16 (b->current_length - gho->outer_l4_hdr_offset);
94 if (gho->gho_flags & GHO_F_OUTER_IP6)
97 ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
99 else if (gho->gho_flags & GHO_F_OUTER_IP4)
101 udp->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
103 b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
107 static_always_inline u16
108 tso_segment_vxlan_tunnel_fixup (vlib_main_t * vm,
109 vnet_interface_per_thread_data_t * ptd,
111 generic_header_offset_t * gho)
113 u16 n_tx_bufs = vec_len (ptd->split_buffers);
114 u16 i = 0, n_tx_bytes = 0;
116 while (i < n_tx_bufs)
118 vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[i]);
119 vnet_get_outer_header (b0, gho);
120 clib_memcpy_fast (vlib_buffer_get_current (b0),
121 vlib_buffer_get_current (sb0), gho->outer_hdr_sz);
123 tso_segment_vxlan_tunnel_headers_fixup (vm, b0, gho);
124 n_tx_bytes += gho->outer_hdr_sz;
130 static_always_inline u16
131 tso_alloc_tx_bufs (vlib_main_t * vm,
132 vnet_interface_per_thread_data_t * ptd,
133 vlib_buffer_t * b0, u32 n_bytes_b0, u16 l234_sz,
134 u16 gso_size, u16 first_data_size,
135 generic_header_offset_t * gho)
138 u16 first_packet_length = l234_sz + first_data_size;
141 * size is the amount of data per segmented buffer except the 1st
143 * l2_hdr_offset is an offset == current_data of vlib_buffer_t.
144 * l234_sz is hdr_sz from l2_hdr_offset.
147 clib_min (gso_size, vlib_buffer_get_default_data_size (vm) - l234_sz
148 - gho->l2_hdr_offset);
151 * First segmented buffer length is calculated separately.
152 * As it may contain less data than gso_size (when gso_size is
153 * greater than current_length of 1st buffer from GSO chained
154 * buffers) and/or size calculated above.
159 * Total packet length minus first packet length including l234 header.
160 * rounded-up division
162 ASSERT (n_bytes_b0 > first_packet_length);
163 n_bufs += ((n_bytes_b0 - first_packet_length + (size - 1)) / size);
165 vec_validate (ptd->split_buffers, n_bufs - 1);
167 n_alloc = vlib_buffer_alloc (vm, ptd->split_buffers, n_bufs);
168 if (n_alloc < n_bufs)
170 vlib_buffer_free (vm, ptd->split_buffers, n_alloc);
176 static_always_inline void
177 tso_init_buf_from_template_base (vlib_buffer_t * nb0, vlib_buffer_t * b0,
178 u32 flags, u16 length)
180 nb0->current_data = b0->current_data;
181 nb0->total_length_not_including_first_buffer = 0;
182 nb0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID | flags;
183 nb0->trace_handle = b0->trace_handle;
184 clib_memcpy_fast (&nb0->opaque, &b0->opaque, sizeof (nb0->opaque));
185 clib_memcpy_fast (vlib_buffer_get_current (nb0),
186 vlib_buffer_get_current (b0), length);
187 nb0->current_length = length;
190 static_always_inline void
191 tso_init_buf_from_template (vlib_main_t * vm, vlib_buffer_t * nb0,
192 vlib_buffer_t * b0, u16 template_data_sz,
193 u16 gso_size, u8 ** p_dst_ptr, u16 * p_dst_left,
194 u32 next_tcp_seq, u32 flags,
195 generic_header_offset_t * gho)
197 tso_init_buf_from_template_base (nb0, b0, flags, template_data_sz);
201 vlib_buffer_get_default_data_size (vm) - (template_data_sz +
203 *p_dst_ptr = vlib_buffer_get_current (nb0) + template_data_sz;
206 (tcp_header_t *) (vlib_buffer_get_current (nb0) + gho->l4_hdr_offset);
207 tcp->seq_number = clib_host_to_net_u32 (next_tcp_seq);
210 static_always_inline void
211 tso_fixup_segmented_buf (vlib_main_t * vm, vlib_buffer_t * b0, u8 tcp_flags,
212 int is_ip6, generic_header_offset_t * gho,
216 (ip4_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset);
218 (ip6_header_t *) (vlib_buffer_get_current (b0) + gho->l3_hdr_offset);
220 (tcp_header_t *) (vlib_buffer_get_current (b0) + gho->l4_hdr_offset);
222 tcp->flags = tcp_flags;
226 ip6->payload_length =
227 clib_host_to_net_u16 (b0->current_length -
228 (gho->l4_hdr_offset - gho->l2_hdr_offset));
229 if (do_csums && (b0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM))
234 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip6, &bogus);
235 b0->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
241 clib_host_to_net_u16 (b0->current_length -
242 (gho->l3_hdr_offset - gho->l2_hdr_offset));
245 if (b0->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
246 ip4->checksum = ip4_header_checksum (ip4);
247 if (b0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
250 tcp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip4);
252 b0->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
253 b0->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
259 * Allocate the necessary number of ptd->split_buffers,
260 * and segment the possibly chained buffer(s) from b0 into
263 * Return the cumulative number of bytes sent or zero
264 * if allocation failed.
267 static_always_inline u32
268 tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd,
269 u32 sbi0, vlib_buffer_t * sb0,
270 generic_header_offset_t * gho, u32 n_bytes_b0, int is_ip6,
274 u16 gso_size = vnet_buffer2 (sb0)->gso_size;
276 u8 save_tcp_flags = 0;
277 u8 tcp_flags_no_fin_psh = 0;
278 u32 next_tcp_seq = 0;
281 (tcp_header_t *) (vlib_buffer_get_current (sb0) + gho->l4_hdr_offset);
282 next_tcp_seq = clib_net_to_host_u32 (tcp->seq_number);
283 /* store original flags for last packet and reset FIN and PSH */
284 save_tcp_flags = tcp->flags;
285 tcp_flags_no_fin_psh = tcp->flags & ~(TCP_FLAG_FIN | TCP_FLAG_PSH);
289 sb0->flags & ~(VNET_BUFFER_F_GSO | VLIB_BUFFER_NEXT_PRESENT);
290 u16 l234_sz = gho->hdr_sz;
291 int first_data_size = clib_min (gso_size, sb0->current_length - l234_sz);
292 next_tcp_seq += first_data_size;
296 (vm, ptd, sb0, n_bytes_b0, l234_sz, gso_size, first_data_size, gho)))
299 vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[0]);
300 tso_init_buf_from_template_base (b0, sb0, default_bflags,
301 l234_sz + first_data_size);
303 u32 total_src_left = n_bytes_b0 - l234_sz - first_data_size;
306 /* Need to copy more segments */
307 u8 *src_ptr, *dst_ptr;
308 u16 src_left, dst_left;
309 /* current source buffer */
310 vlib_buffer_t *csb0 = sb0;
312 /* current dest buffer */
314 u16 dbi = 1; /* the buffer [0] is b0 */
316 src_ptr = vlib_buffer_get_current (sb0) + l234_sz + first_data_size;
317 src_left = sb0->current_length - l234_sz - first_data_size;
319 tso_fixup_segmented_buf (vm, b0, tcp_flags_no_fin_psh, is_ip6, gho,
322 /* grab a second buffer and prepare the loop */
323 ASSERT (dbi < vec_len (ptd->split_buffers));
324 cdb0 = vlib_get_buffer (vm, ptd->split_buffers[dbi++]);
325 tso_init_buf_from_template (vm, cdb0, b0, l234_sz, gso_size, &dst_ptr,
326 &dst_left, next_tcp_seq, default_bflags,
329 /* an arbitrary large number to catch the runaway loops */
331 while (total_src_left)
334 clib_panic ("infinite loop detected");
335 u16 bytes_to_copy = clib_min (src_left, dst_left);
337 clib_memcpy_fast (dst_ptr, src_ptr, bytes_to_copy);
339 src_left -= bytes_to_copy;
340 src_ptr += bytes_to_copy;
341 total_src_left -= bytes_to_copy;
342 dst_left -= bytes_to_copy;
343 dst_ptr += bytes_to_copy;
344 next_tcp_seq += bytes_to_copy;
345 cdb0->current_length += bytes_to_copy;
349 int has_next = (csb0->flags & VLIB_BUFFER_NEXT_PRESENT);
350 u32 next_bi = csb0->next_buffer;
352 /* init src to the next buffer in chain */
356 csb0 = vlib_get_buffer (vm, csbi0);
357 src_left = csb0->current_length;
358 src_ptr = vlib_buffer_get_current (csb0);
362 ASSERT (total_src_left == 0);
366 if (0 == dst_left && total_src_left)
368 n_tx_bytes += cdb0->current_length;
369 tso_fixup_segmented_buf (vm, cdb0, tcp_flags_no_fin_psh, is_ip6,
371 ASSERT (dbi < vec_len (ptd->split_buffers));
372 cdb0 = vlib_get_buffer (vm, ptd->split_buffers[dbi++]);
373 tso_init_buf_from_template (vm, cdb0, b0, l234_sz,
374 gso_size, &dst_ptr, &dst_left,
375 next_tcp_seq, default_bflags, gho);
379 tso_fixup_segmented_buf (vm, cdb0, save_tcp_flags, is_ip6, gho,
382 n_tx_bytes += cdb0->current_length;
384 n_tx_bytes += b0->current_length;
388 static_always_inline void
389 drop_one_buffer_and_count (vlib_main_t * vm, vnet_main_t * vnm,
390 vlib_node_runtime_t * node, u32 * pbi0,
391 u32 sw_if_index, u32 drop_error_code)
393 u32 thread_index = vm->thread_index;
395 vlib_simple_counter_main_t *cm;
397 vec_elt_at_index (vnm->interface_main.sw_if_counters,
398 VNET_INTERFACE_COUNTER_TX_ERROR);
399 vlib_increment_simple_counter (cm, thread_index, sw_if_index, 1);
401 vlib_error_drop_buffers (vm, node, pbi0,
402 /* buffer stride */ 1,
404 VNET_INTERFACE_OUTPUT_NEXT_DROP,
405 node->node_index, drop_error_code);
408 static_always_inline uword
409 vnet_gso_node_inline (vlib_main_t * vm,
410 vlib_node_runtime_t * node,
411 vlib_frame_t * frame,
413 vnet_hw_interface_t * hi,
414 int is_ip6, int do_segmentation)
417 u32 next_index = node->cached_next_index;
418 u32 *from = vlib_frame_vector_args (frame);
419 u32 n_left_from = frame->n_vectors;
420 u32 *from_end = from + n_left_from;
421 u32 thread_index = vm->thread_index;
422 vnet_interface_main_t *im = &vnm->interface_main;
423 vnet_interface_per_thread_data_t *ptd =
424 vec_elt_at_index (im->per_thread_data, thread_index);
425 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
427 vlib_get_buffers (vm, from, b, n_left_from);
429 while (n_left_from > 0)
433 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
435 if (!do_segmentation)
436 while (from + 8 <= from_end && n_left_to_next >= 4)
438 u32 bi0, bi1, bi2, bi3;
439 u32 next0, next1, next2, next3;
440 u32 swif0, swif1, swif2, swif3;
441 gso_trace_t *t0, *t1, *t2, *t3;
442 vnet_hw_interface_t *hi0, *hi1, *hi2, *hi3;
444 /* Prefetch next iteration. */
445 vlib_prefetch_buffer_header (b[4], LOAD);
446 vlib_prefetch_buffer_header (b[5], LOAD);
447 vlib_prefetch_buffer_header (b[6], LOAD);
448 vlib_prefetch_buffer_header (b[7], LOAD);
459 swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
460 swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
461 swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
462 swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
464 if (PREDICT_FALSE (hi->sw_if_index != swif0))
466 hi0 = vnet_get_sup_hw_interface (vnm, swif0);
467 if ((hi0->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0 &&
468 (b[0]->flags & VNET_BUFFER_F_GSO))
471 if (PREDICT_FALSE (hi->sw_if_index != swif1))
473 hi1 = vnet_get_sup_hw_interface (vnm, swif1);
474 if (!(hi1->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) &&
475 (b[1]->flags & VNET_BUFFER_F_GSO))
478 if (PREDICT_FALSE (hi->sw_if_index != swif2))
480 hi2 = vnet_get_sup_hw_interface (vnm, swif2);
481 if ((hi2->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0 &&
482 (b[2]->flags & VNET_BUFFER_F_GSO))
485 if (PREDICT_FALSE (hi->sw_if_index != swif3))
487 hi3 = vnet_get_sup_hw_interface (vnm, swif3);
488 if (!(hi3->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) &&
489 (b[3]->flags & VNET_BUFFER_F_GSO))
493 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
495 t0 = vlib_add_trace (vm, node, b[0], sizeof (t0[0]));
496 t0->flags = b[0]->flags & VNET_BUFFER_F_GSO;
497 t0->gso_size = vnet_buffer2 (b[0])->gso_size;
498 t0->gso_l4_hdr_sz = vnet_buffer2 (b[0])->gso_l4_hdr_sz;
499 vnet_generic_header_offset_parser (b[0], &t0->gho);
501 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
503 t1 = vlib_add_trace (vm, node, b[1], sizeof (t1[0]));
504 t1->flags = b[1]->flags & VNET_BUFFER_F_GSO;
505 t1->gso_size = vnet_buffer2 (b[1])->gso_size;
506 t1->gso_l4_hdr_sz = vnet_buffer2 (b[1])->gso_l4_hdr_sz;
507 vnet_generic_header_offset_parser (b[1], &t1->gho);
509 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
511 t2 = vlib_add_trace (vm, node, b[2], sizeof (t2[0]));
512 t2->flags = b[2]->flags & VNET_BUFFER_F_GSO;
513 t2->gso_size = vnet_buffer2 (b[2])->gso_size;
514 t2->gso_l4_hdr_sz = vnet_buffer2 (b[2])->gso_l4_hdr_sz;
515 vnet_generic_header_offset_parser (b[2], &t2->gho);
517 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
519 t3 = vlib_add_trace (vm, node, b[3], sizeof (t3[0]));
520 t3->flags = b[3]->flags & VNET_BUFFER_F_GSO;
521 t3->gso_size = vnet_buffer2 (b[3])->gso_size;
522 t3->gso_l4_hdr_sz = vnet_buffer2 (b[3])->gso_l4_hdr_sz;
523 vnet_generic_header_offset_parser (b[3], &t3->gho);
533 vnet_feature_next (&next0, b[0]);
534 vnet_feature_next (&next1, b[1]);
535 vnet_feature_next (&next2, b[2]);
536 vnet_feature_next (&next3, b[3]);
537 vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
538 n_left_to_next, bi0, bi1, bi2,
539 bi3, next0, next1, next2, next3);
543 while (from + 1 <= from_end && n_left_to_next > 0)
547 vnet_hw_interface_t *hi0;
549 u32 do_segmentation0 = 0;
552 swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
553 if (PREDICT_FALSE (hi->sw_if_index != swif0))
555 hi0 = vnet_get_sup_hw_interface (vnm, swif0);
556 if ((hi0->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0 &&
557 (b[0]->flags & VNET_BUFFER_F_GSO))
558 do_segmentation0 = 1;
561 do_segmentation0 = do_segmentation;
563 /* speculatively enqueue b0 to the current next frame */
564 to_next[0] = bi0 = from[0];
570 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
572 t0 = vlib_add_trace (vm, node, b[0], sizeof (t0[0]));
573 t0->flags = b[0]->flags & VNET_BUFFER_F_GSO;
574 t0->gso_size = vnet_buffer2 (b[0])->gso_size;
575 t0->gso_l4_hdr_sz = vnet_buffer2 (b[0])->gso_l4_hdr_sz;
576 vnet_generic_header_offset_parser (b[0], &t0->gho);
579 if (do_segmentation0)
581 if (PREDICT_FALSE (b[0]->flags & VNET_BUFFER_F_GSO))
584 * Undo the enqueue of the b0 - it is not going anywhere,
585 * and will be freed either after it's segmented or
586 * when dropped, if there is no buffers to segment into.
590 /* undo the counting. */
591 generic_header_offset_t gho = { 0 };
592 u32 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]);
595 vnet_generic_header_offset_parser (b[0], &gho);
597 if (PREDICT_FALSE (gho.gho_flags & GHO_F_TUNNEL))
600 ((gho.gho_flags & GHO_F_VXLAN_TUNNEL) == 0))
602 /* not supported yet */
603 drop_one_buffer_and_count (vm, vnm, node, from - 1,
605 VNET_INTERFACE_OUTPUT_ERROR_UNHANDLED_GSO_TYPE);
610 vnet_get_inner_header (b[0], &gho);
612 n_bytes_b0 -= gho.outer_hdr_sz;
614 * In case of tunnel encapsulated packet, we will
615 * calculate the checksums for segmented inner packets.
618 is_ip6 = (gho.gho_flags & GHO_F_IP6) != 0;
622 tso_segment_buffer (vm, ptd, bi0, b[0], &gho, n_bytes_b0,
625 if (PREDICT_FALSE (n_tx_bytes == 0))
627 drop_one_buffer_and_count (vm, vnm, node, from - 1,
629 VNET_INTERFACE_OUTPUT_ERROR_NO_BUFFERS_FOR_GSO);
634 if (PREDICT_FALSE (gho.gho_flags & GHO_F_VXLAN_TUNNEL))
636 vnet_get_outer_header (b[0], &gho);
638 tso_segment_vxlan_tunnel_fixup (vm, ptd, b[0], &gho);
641 u16 n_tx_bufs = vec_len (ptd->split_buffers);
642 u32 *from_seg = ptd->split_buffers;
644 while (n_tx_bufs > 0)
648 if (n_tx_bufs >= n_left_to_next)
650 while (n_left_to_next > 0)
652 sbi0 = to_next[0] = from_seg[0];
653 sb0 = vlib_get_buffer (vm, sbi0);
654 ASSERT (sb0->current_length > 0);
659 vnet_feature_next (&next0, sb0);
660 vlib_validate_buffer_enqueue_x1 (vm, node,
666 vlib_put_next_frame (vm, node, next_index,
668 vlib_get_new_next_frame (vm, node, next_index,
669 to_next, n_left_to_next);
671 while (n_tx_bufs > 0)
673 sbi0 = to_next[0] = from_seg[0];
674 sb0 = vlib_get_buffer (vm, sbi0);
675 ASSERT (sb0->current_length > 0);
680 vnet_feature_next (&next0, sb0);
681 vlib_validate_buffer_enqueue_x1 (vm, node,
688 /* The buffers were enqueued. Reset the length */
689 _vec_len (ptd->split_buffers) = 0;
690 /* Free the now segmented buffer */
691 vlib_buffer_free_one (vm, bi0);
697 vnet_feature_next (&next0, b[0]);
698 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
699 n_left_to_next, bi0, next0);
702 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
705 return frame->n_vectors;
708 static_always_inline uword
709 vnet_gso_inline (vlib_main_t * vm,
710 vlib_node_runtime_t * node, vlib_frame_t * frame, int is_ip6)
712 vnet_main_t *vnm = vnet_get_main ();
713 vnet_hw_interface_t *hi;
715 if (frame->n_vectors > 0)
717 u32 *from = vlib_frame_vector_args (frame);
718 vlib_buffer_t *b = vlib_get_buffer (vm, from[0]);
719 hi = vnet_get_sup_hw_interface (vnm,
720 vnet_buffer (b)->sw_if_index[VLIB_TX]);
722 if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO)
723 return vnet_gso_node_inline (vm, node, frame, vnm, hi,
724 is_ip6, /* do_segmentation */ 0);
726 return vnet_gso_node_inline (vm, node, frame, vnm, hi,
727 is_ip6, /* do_segmentation */ 1);
732 VLIB_NODE_FN (gso_l2_ip4_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
733 vlib_frame_t * frame)
735 return vnet_gso_inline (vm, node, frame, 0 /* ip6 */ );
738 VLIB_NODE_FN (gso_l2_ip6_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
739 vlib_frame_t * frame)
741 return vnet_gso_inline (vm, node, frame, 1 /* ip6 */ );
744 VLIB_NODE_FN (gso_ip4_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
745 vlib_frame_t * frame)
747 return vnet_gso_inline (vm, node, frame, 0 /* ip6 */ );
750 VLIB_NODE_FN (gso_ip6_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
751 vlib_frame_t * frame)
753 return vnet_gso_inline (vm, node, frame, 1 /* ip6 */ );
758 VLIB_REGISTER_NODE (gso_l2_ip4_node) = {
759 .vector_size = sizeof (u32),
760 .format_trace = format_gso_trace,
761 .type = VLIB_NODE_TYPE_INTERNAL,
764 .name = "gso-l2-ip4",
767 VLIB_REGISTER_NODE (gso_l2_ip6_node) = {
768 .vector_size = sizeof (u32),
769 .format_trace = format_gso_trace,
770 .type = VLIB_NODE_TYPE_INTERNAL,
773 .name = "gso-l2-ip6",
776 VLIB_REGISTER_NODE (gso_ip4_node) = {
777 .vector_size = sizeof (u32),
778 .format_trace = format_gso_trace,
779 .type = VLIB_NODE_TYPE_INTERNAL,
785 VLIB_REGISTER_NODE (gso_ip6_node) = {
786 .vector_size = sizeof (u32),
787 .format_trace = format_gso_trace,
788 .type = VLIB_NODE_TYPE_INTERNAL,
794 VNET_FEATURE_INIT (gso_l2_ip4_node, static) = {
795 .arc_name = "l2-output-ip4",
796 .node_name = "gso-l2-ip4",
797 .runs_before = VNET_FEATURES ("l2-output-feat-arc-end"),
800 VNET_FEATURE_INIT (gso_l2_ip6_node, static) = {
801 .arc_name = "l2-output-ip6",
802 .node_name = "gso-l2-ip6",
803 .runs_before = VNET_FEATURES ("l2-output-feat-arc-end"),
806 VNET_FEATURE_INIT (gso_ip4_node, static) = {
807 .arc_name = "ip4-output",
808 .node_name = "gso-ip4",
809 .runs_after = VNET_FEATURES ("ipsec4-output-feature"),
810 .runs_before = VNET_FEATURES ("interface-output"),
813 VNET_FEATURE_INIT (gso_ip6_node, static) = {
814 .arc_name = "ip6-output",
815 .node_name = "gso-ip6",
816 .runs_after = VNET_FEATURES ("ipsec6-output-feature"),
817 .runs_before = VNET_FEATURES ("interface-output"),
821 * fd.io coding-style-patch-verification: ON
824 * eval: (c-set-style "gnu")