2 * Copyright (c) 2019 Arrcus Inc 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 <vlib/vlib.h>
16 #include <vnet/vnet.h>
17 #include <vppinfra/error.h>
18 #include <vppinfra/hash.h>
19 #include <srv6-mobile/mobile.h>
21 extern ip6_address_t sr_pr_encaps_src;
25 ip6_address_t src, dst;
26 ip6_address_t sr_prefix;
29 } srv6_end_rewrite_trace_t;
31 static u16 srh_tagfield[256] = {
34 /* 1 : Echo Request */
39 0x0, 0x0, 0x0, 0x0, 0x0,
41 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
43 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
46 /* 26 : Error Indication */
49 0x0, 0x0, 0x0, 0x0, 0x0,
51 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
52 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
53 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
54 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
55 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
56 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
57 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
58 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
59 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
60 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
61 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
62 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
63 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
64 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
65 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
66 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
67 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
68 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
69 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
70 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
71 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
72 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
73 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
74 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
75 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
76 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
77 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
79 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
87 format_srv6_end_rewrite_trace (u8 * s, va_list * args)
89 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
90 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
91 srv6_end_rewrite_trace_t *t = va_arg (*args, srv6_end_rewrite_trace_t *);
93 return format (s, "SRv6-END-rewrite: src %U dst %U\n\tTEID: 0x%x",
94 format_ip4_address, &t->src, format_ip4_address, &t->dst,
95 clib_net_to_host_u32 (t->teid));
99 format_srv6_end_rewrite_trace6 (u8 * s, va_list * args)
101 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
102 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
103 srv6_end_rewrite_trace_t *t = va_arg (*args, srv6_end_rewrite_trace_t *);
106 "SRv6-END-rewrite: src %U dst %U\n\tTEID: 0x%x\n\tsr_prefix: %U/%d",
107 format_ip6_address, &t->src, format_ip6_address, &t->dst,
108 clib_net_to_host_u32 (t->teid), format_ip6_address,
109 &t->sr_prefix, t->sr_prefixlen);
112 #define foreach_srv6_end_v4_error \
113 _(M_GTP4_E_PACKETS, "srv6 End.M.GTP4.E packets") \
114 _(M_GTP4_E_BAD_PACKETS, "srv6 End.M.GTP4.E bad packets")
116 #define foreach_srv6_t_v4_d_error \
117 _(M_GTP4_D_PACKETS, "srv6 T.M.GTP4.D packets") \
118 _(M_GTP4_D_BAD_PACKETS, "srv6 T.M.GTP4.D bad packets")
120 #define foreach_srv6_end_v6_e_error \
121 _(M_GTP6_E_PACKETS, "srv6 End.M.GTP6.E packets") \
122 _(M_GTP6_E_BAD_PACKETS, "srv6 End.M.GTP6.E bad packets")
124 #define foreach_srv6_end_v6_d_error \
125 _(M_GTP6_D_PACKETS, "srv6 End.M.GTP6.D packets") \
126 _(M_GTP6_D_BAD_PACKETS, "srv6 End.M.GTP6.D bad packets")
128 #define foreach_srv6_end_v6_d_di_error \
129 _(M_GTP6_D_DI_PACKETS, "srv6 End.M.GTP6.D.DI packets") \
130 _(M_GTP6_D_DI_BAD_PACKETS, "srv6 End.M.GTP6.D.DI bad packets")
132 #define foreach_srv6_end_v6_dt_error \
133 _(M_GTP6_DT_PACKETS, "srv6 End.M.GTP6.DT packets") \
134 _(M_GTP6_DT_BAD_PACKETS, "srv6 End.M.GTP6.DT bad packets")
136 #define foreach_srv6_t_v4_dt_error \
137 _(M_GTP4_DT_PACKETS, "srv6 T.M.GTP4.DT packets") \
138 _(M_GTP4_DT_BAD_PACKETS, "srv6 T.M.GTP4.DT bad packets")
142 #define _(sym,str) SRV6_END_ERROR_##sym,
143 foreach_srv6_end_v4_error
146 } srv6_end_error_v4_t;
150 #define _(sym,str) SRV6_T_ERROR_##sym,
151 foreach_srv6_t_v4_d_error
154 } srv6_t_error_v4_d_t;
158 #define _(sym,str) SRV6_END_ERROR_##sym,
159 foreach_srv6_end_v6_e_error
161 SRV6_END_N_V6_E_ERROR,
162 } srv6_end_error_v6_e_t;
166 #define _(sym,str) SRV6_END_ERROR_##sym,
167 foreach_srv6_end_v6_d_error
169 SRV6_END_N_V6_D_ERROR,
170 } srv6_end_error_v6_d_t;
174 #define _(sym,str) SRV6_END_ERROR_##sym,
175 foreach_srv6_end_v6_d_di_error
177 SRV6_END_N_V6_D_DI_ERROR,
178 } srv6_end_error_v6_d_di_t;
182 #define _(sym,str) SRV6_END_ERROR_##sym,
183 foreach_srv6_end_v6_dt_error
185 SRV6_END_N_V6_DT_ERROR,
186 } srv6_end_error_v6_dt_t;
190 #define _(sym,str) SRV6_T_ERROR_##sym,
191 foreach_srv6_t_v4_dt_error
193 SRV6_T_N_V4_DT_ERROR,
194 } srv6_t_error_v4_dt_t;
196 static char *srv6_end_error_v4_strings[] = {
197 #define _(sym,string) string,
198 foreach_srv6_end_v4_error
202 static char *srv6_t_error_v4_d_strings[] = {
203 #define _(sym,string) string,
204 foreach_srv6_t_v4_d_error
208 static char *srv6_end_error_v6_e_strings[] = {
209 #define _(sym,string) string,
210 foreach_srv6_end_v6_e_error
214 static char *srv6_end_error_v6_d_strings[] = {
215 #define _(sym,string) string,
216 foreach_srv6_end_v6_d_error
220 static char *srv6_end_error_v6_d_di_strings[] = {
221 #define _(sym,string) string,
222 foreach_srv6_end_v6_d_di_error
226 static char *srv6_end_error_v6_dt_strings[] = {
227 #define _(sym,string) string,
228 foreach_srv6_end_v6_dt_error
232 static char *srv6_t_error_v4_dt_strings[] = {
233 #define _(sym,string) string,
234 foreach_srv6_t_v4_dt_error
240 SRV6_END_M_GTP4_E_NEXT_DROP,
241 SRV6_END_M_GTP4_E_NEXT_LOOKUP,
242 SRV6_END_M_GTP4_E_N_NEXT,
243 } srv6_end_m_gtp4_e_next_t;
247 SRV6_T_M_GTP4_D_NEXT_DROP,
248 SRV6_T_M_GTP4_D_NEXT_LOOKUP,
249 SRV6_T_M_GTP4_D_N_NEXT,
250 } srv6_T_m_gtp4_d_next_t;
254 SRV6_END_M_GTP6_E_NEXT_DROP,
255 SRV6_END_M_GTP6_E_NEXT_LOOKUP,
256 SRV6_END_M_GTP6_E_N_NEXT,
257 } srv6_end_m_gtp6_e_next_t;
261 SRV6_END_M_GTP6_D_NEXT_DROP,
262 SRV6_END_M_GTP6_D_NEXT_LOOKUP,
263 SRV6_END_M_GTP6_D_N_NEXT,
264 } srv6_end_m_gtp6_d_next_t;
268 SRV6_END_M_GTP6_D_DI_NEXT_DROP,
269 SRV6_END_M_GTP6_D_DI_NEXT_LOOKUP,
270 SRV6_END_M_GTP6_D_DI_N_NEXT,
271 } srv6_end_m_gtp6_d_di_next_t;
275 SRV6_END_M_GTP6_DT_NEXT_DROP,
276 SRV6_END_M_GTP6_DT_NEXT_LOOKUP4,
277 SRV6_END_M_GTP6_DT_NEXT_LOOKUP6,
278 SRV6_END_M_GTP6_DT_N_NEXT,
279 } srv6_end_m_gtp6_dt_next_t;
283 SRV6_T_M_GTP4_DT_NEXT_DROP,
284 SRV6_T_M_GTP4_DT_NEXT_LOOKUP4,
285 SRV6_T_M_GTP4_DT_NEXT_LOOKUP6,
286 SRV6_T_M_GTP4_DT_N_NEXT,
287 } srv6_t_m_gtp4_dt_next_t;
290 hash_uword_to_u16 (uword * key)
295 return val[0] ^ val[1] ^ val[2] ^ val[3];
297 return val[0] ^ val[1];
302 gtpu_type_get (u16 tag)
306 val = clib_net_to_host_u16 (tag);
307 if (val & SRH_TAG_ECHO_REPLY)
308 return GTPU_TYPE_ECHO_REPLY;
309 else if (val & SRH_TAG_ECHO_REQUEST)
310 return GTPU_TYPE_ECHO_REQUEST;
311 else if (val & SRH_TAG_ERROR_INDICATION)
312 return GTPU_TYPE_ERROR_INDICATION;
313 else if (val & SRH_TAG_END_MARKER)
314 return GTPU_TYPE_END_MARKER;
316 return GTPU_TYPE_GTPU;
319 // Function for SRv6 GTP4.E function.
320 VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm,
321 vlib_node_runtime_t * node,
322 vlib_frame_t * frame)
324 srv6_end_main_v4_t *sm = &srv6_end_main_v4;
325 ip6_sr_main_t *sm2 = &sr_main;
326 u32 n_left_from, next_index, *from, *to_next;
327 u32 thread_index = vm->thread_index;
329 u32 good_n = 0, bad_n = 0;
331 from = vlib_frame_vector_args (frame);
332 n_left_from = frame->n_vectors;
333 next_index = node->cached_next_index;
335 while (n_left_from > 0)
339 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
341 while (n_left_from > 0 && n_left_to_next > 0)
345 ip6_sr_localsid_t *ls0;
346 srv6_end_gtp4_param_t *ls_param;
348 ip6srv_combo_header_t *ip6srv0;
349 ip6_address_t src0, dst0;
351 ip4_gtpu_header_t *hdr0 = NULL;
354 u32 next0 = SRV6_END_M_GTP4_E_NEXT_LOOKUP;
364 b0 = vlib_get_buffer (vm, bi0);
366 pool_elt_at_index (sm2->localsids,
367 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
369 ls_param = (srv6_end_gtp4_param_t *) ls0->plugin_mem;
371 ip6srv0 = vlib_buffer_get_current (b0);
372 src0 = ip6srv0->ip.src_address;
373 dst0 = ip6srv0->ip.dst_address;
375 len0 = vlib_buffer_length_in_chain (vm, b0);
377 if ((ip6srv0->ip.protocol == IPPROTO_IPV6_ROUTE
379 sizeof (ip6srv_combo_header_t) + ip6srv0->sr.length * 8)
380 || (len0 < sizeof (ip6_header_t)))
382 next0 = SRV6_END_M_GTP4_E_NEXT_DROP;
391 u8 *teid8p = (u8 *) & teid;
401 u8 ie_buf[GTPU_IE_MAX_SIZ];
405 if (ip6srv0->ip.protocol == IPPROTO_IPV6_ROUTE)
407 tag = ip6srv0->sr.tag;
410 offset = ls0->localsid_prefix_len / 8;
411 shift = ls0->localsid_prefix_len % 8;
413 gtpu_type = gtpu_type_get (tag);
415 if (PREDICT_TRUE (shift == 0))
417 clib_memcpy_fast (&dst4.as_u8[0], &dst0.as_u8[offset], 4);
419 qfi = dst0.as_u8[offset + 4];
421 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
422 || gtpu_type == GTPU_TYPE_ECHO_REPLY
423 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
425 clib_memcpy_fast (&seq, &dst0.as_u8[offset + 5], 2);
429 clib_memcpy_fast (teid8p, &dst0.as_u8[offset + 5], 4);
436 for (index = 0; index < 4; index++)
438 dst4.as_u8[index] = dst0.as_u8[offset + index] << shift;
440 dst0.as_u8[offset + index + 1] >> (8 - shift);
443 qfi |= dst0.as_u8[offset + 4] << shift;
444 qfi |= dst0.as_u8[offset + 5] >> (8 - shift);
446 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
447 || gtpu_type == GTPU_TYPE_ECHO_REPLY
448 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
451 for (index = 0; index < 2; index++)
453 sp[index] = dst0.as_u8[offset + 5 + index] << shift;
455 dst0.as_u8[offset + 6 + index] >> (8 - shift);
460 for (index = 0; index < 4; index++)
462 *teid8p = dst0.as_u8[offset + 5 + index] << shift;
464 dst0.as_u8[offset + 6 + index] >> (8 - shift);
473 sizeof (gtpu_exthdr_t) + sizeof (gtpu_pdu_session_t);
475 else if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
476 || gtpu_type == GTPU_TYPE_ECHO_REPLY
477 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
479 hdrlen = sizeof (gtpu_exthdr_t);
482 if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ECHO_REPLY))
484 hdrlen += sizeof (gtpu_recovery_ie);
487 if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION))
492 ext_len = ip6srv0->sr.length * 8;
495 sizeof (ip6_address_t) * (ip6srv0->sr.last_entry + 1))
498 (ip6_sr_tlv_t *) ((u8 *) & ip6srv0->sr +
499 sizeof (ip6_sr_header_t) +
500 sizeof (ip6_address_t) *
501 (ip6srv0->sr.last_entry + 1));
503 if (tlv->type == SRH_TLV_USER_PLANE_CONTAINER)
505 user_plane_sub_tlv_t *sub_tlv;
507 sub_tlv = (user_plane_sub_tlv_t *) tlv->value;
509 ie_size = sub_tlv->length;
510 clib_memcpy_fast (ie_buf, sub_tlv->value, ie_size);
517 if (ip6srv0->ip.protocol == IPPROTO_IPV6_ROUTE)
519 vlib_buffer_advance (b0,
520 (word) sizeof (ip6srv_combo_header_t) +
521 ip6srv0->sr.length * 8);
525 vlib_buffer_advance (b0, (word) sizeof (ip6_header_t));
528 // get length of encapsulated IPv6 packet (the remaining part)
529 p = vlib_buffer_get_current (b0);
531 plen = len0 = vlib_buffer_length_in_chain (vm, b0);
535 hdrlen += sizeof (ip4_gtpu_header_t);
537 // IPv4 GTP-U header creation.
538 vlib_buffer_advance (b0, -(word) hdrlen);
540 hdr0 = vlib_buffer_get_current (b0);
542 clib_memcpy_fast (hdr0, &sm->cache_hdr,
543 sizeof (ip4_gtpu_header_t));
545 hdr0->ip4.dst_address.as_u32 = dst4.as_u32;
547 hdr0->gtpu.teid = teid;
548 hdr0->gtpu.length = clib_host_to_net_u16 (len0);
550 hdr0->gtpu.type = gtpu_type;
555 gtpu_pdu_session_t *sess;
557 hdr0->gtpu.ver_flags |= GTPU_EXTHDR_FLAG;
559 hdr0->gtpu.ext->seq = 0;
561 hdr0->gtpu.ext->npdu_num = 0;
562 hdr0->gtpu.ext->nextexthdr = GTPU_EXTHDR_PDU_SESSION;
564 type = qfi & SRV6_PDU_SESSION_U_BIT_MASK;
567 ((qfi & SRV6_PDU_SESSION_QFI_MASK) >> 2) |
568 ((qfi & SRV6_PDU_SESSION_R_BIT_MASK) << 5);
571 (gtpu_pdu_session_t *) (((char *) hdr0) +
572 sizeof (ip4_gtpu_header_t) +
573 sizeof (gtpu_exthdr_t));
578 sess->nextexthdr = 0;
581 if (gtpu_type == GTPU_TYPE_ECHO_REPLY
582 || gtpu_type == GTPU_TYPE_ECHO_REQUEST
583 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
585 hdr0->gtpu.ver_flags |= GTPU_SEQ_FLAG;
586 hdr0->gtpu.ext->seq = seq;
587 hdr0->gtpu.ext->npdu_num = 0;
588 hdr0->gtpu.ext->nextexthdr = 0;
590 if (gtpu_type == GTPU_TYPE_ECHO_REPLY)
592 gtpu_recovery_ie *recovery;
595 (gtpu_recovery_ie *) ((u8 *) hdr0 +
597 sizeof (gtpu_recovery_ie)));
598 recovery->type = GTPU_RECOVERY_IE_TYPE;
599 recovery->restart_counter = 0;
601 else if (gtpu_type == GTPU_TYPE_ERROR_INDICATION)
607 ie_ptr = (u8 *) ((u8 *) hdr0 + (hdrlen - ie_size));
608 clib_memcpy_fast (ie_ptr, ie_buf, ie_size);
613 offset = ls_param->v4src_position / 8;
614 shift = ls_param->v4src_position % 8;
616 if (PREDICT_TRUE (shift == 0))
618 for (index = 0; index < 4; index++)
620 hdr0->ip4.src_address.as_u8[index] =
621 src0.as_u8[offset + index];
626 for (index = 0; index < 4; index++)
628 hdr0->ip4.src_address.as_u8[index] =
629 src0.as_u8[offset + index] << shift;
630 hdr0->ip4.src_address.as_u8[index] |=
631 src0.as_u8[offset + index + 1] >> (8 - shift);
635 key = hash_memory (p, plen < 40 ? plen : 40, 0);
636 port = hash_uword_to_u16 (&key);
637 hdr0->udp.src_port = port;
639 hdr0->udp.length = clib_host_to_net_u16 (len0 +
640 sizeof (udp_header_t) +
644 hdr0->ip4.length = clib_host_to_net_u16 (len0 +
646 (ip4_gtpu_header_t));
648 hdr0->ip4.checksum = ip4_header_checksum (&hdr0->ip4);
652 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
653 PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
655 srv6_end_rewrite_trace_t *tr =
656 vlib_add_trace (vm, node, b0, sizeof (*tr));
657 clib_memcpy (tr->src.as_u8, hdr0->ip4.src_address.as_u8,
658 sizeof (tr->src.as_u8));
659 clib_memcpy (tr->dst.as_u8, hdr0->ip4.dst_address.as_u8,
660 sizeof (tr->dst.as_u8));
661 tr->teid = hdr0->gtpu.teid;
665 vlib_increment_combined_counter
667 SRV6_END_M_GTP4_E_NEXT_DROP) ? &(sm2->sr_ls_invalid_counters) :
668 &(sm2->sr_ls_valid_counters)), thread_index,
669 ls0 - sm2->localsids, 1, vlib_buffer_length_in_chain (vm, b0));
671 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
672 n_left_to_next, bi0, next0);
675 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
678 vlib_node_increment_counter (vm, sm->end_m_gtp4_e_node_index,
679 SRV6_END_ERROR_M_GTP4_E_BAD_PACKETS, bad_n);
681 vlib_node_increment_counter (vm, sm->end_m_gtp4_e_node_index,
682 SRV6_END_ERROR_M_GTP4_E_PACKETS, good_n);
684 return frame->n_vectors;
687 // Function for SRv6 GTP4.D function.
688 VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm,
689 vlib_node_runtime_t * node,
690 vlib_frame_t * frame)
692 srv6_t_main_v4_decap_t *sm = &srv6_t_main_v4_decap;
693 ip6_sr_main_t *sm2 = &sr_main;
694 u32 n_left_from, next_index, *from, *to_next;
696 u32 good_n = 0, bad_n = 0;
698 from = vlib_frame_vector_args (frame);
699 n_left_from = frame->n_vectors;
700 next_index = node->cached_next_index;
702 while (n_left_from > 0)
706 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
708 while (n_left_from > 0 && n_left_to_next > 0)
713 srv6_end_gtp4_param_t *ls_param;
718 u32 next0 = SRV6_T_M_GTP4_D_NEXT_LOOKUP;
728 b0 = vlib_get_buffer (vm, bi0);
731 pool_elt_at_index (sm2->sid_lists,
732 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
734 ls_param = (srv6_end_gtp4_param_t *) sl0->plugin_mem;
736 len0 = vlib_buffer_length_in_chain (vm, b0);
738 ip4 = vlib_buffer_get_current (b0);
740 if (ip4->protocol != IP_PROTOCOL_UDP
741 || len0 < sizeof (ip4_gtpu_header_t))
743 next0 = SRV6_T_M_GTP4_D_NEXT_DROP;
750 ip6_sr_policy_t *sr_policy = NULL;
751 ip6_sr_sl_t *sl = NULL;
755 ip4_gtpu_header_t *hdr;
756 ip4_address_t src, dst;
758 ip6_header_t *encap = NULL;
768 u32 offset, shift, index;
769 ip6srv_combo_header_t *ip6srv;
770 gtpu_pdu_session_t *sess = NULL;
773 u8 ie_buf[GTPU_IE_MAX_SIZ];
776 hdr = (ip4_gtpu_header_t *) ip4;
778 hdr_len = sizeof (ip4_gtpu_header_t);
780 teid = hdr->gtpu.teid;
781 teidp = (u8 *) & teid;
785 gtpu_type = hdr->gtpu.type;
787 if (hdr->gtpu.ver_flags & (GTPU_EXTHDR_FLAG | GTPU_SEQ_FLAG))
790 hdr_len += sizeof (gtpu_exthdr_t);
792 seq = hdr->gtpu.ext->seq;
794 if (hdr->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION)
796 // PDU Session Container.
798 (gtpu_pdu_session_t *) (((char *) hdr) + hdr_len);
799 qfi = sess->u.val & ~GTPU_PDU_SESSION_P_BIT_MASK;
802 hdr_len += sizeof (gtpu_pdu_session_t);
804 if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK)
806 hdr_len += sizeof (gtpu_paging_policy_t);
811 src = hdr->ip4.src_address;
814 dst = hdr->ip4.dst_address;
817 seg = ls_param->sr_prefix;
819 offset = ls_param->sr_prefixlen / 8;
820 shift = ls_param->sr_prefixlen % 8;
822 if (PREDICT_TRUE (shift == 0))
824 clib_memcpy_fast (&seg.as_u8[offset], dstp, 4);
829 ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) |
830 ((qfi & GTPU_PDU_SESSION_R_BIT_MASK) >> 5);
834 qfi |= SRV6_PDU_SESSION_U_BIT_MASK;
837 seg.as_u8[offset + 4] = qfi;
840 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
841 || gtpu_type == GTPU_TYPE_ECHO_REPLY
842 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
844 clib_memcpy_fast (&seg.as_u8[offset + 5], seqp, 2);
848 clib_memcpy_fast (&seg.as_u8[offset + 5], teidp, 4);
853 for (index = 0; index < 4; index++)
855 seg.as_u8[offset + index] |= dstp[index] >> shift;
856 seg.as_u8[offset + index + 1] |=
857 dstp[index] << (8 - shift);
863 ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) |
864 ((qfi & GTPU_PDU_SESSION_R_BIT_MASK) >> 5);
868 qfi |= SRV6_PDU_SESSION_U_BIT_MASK;
871 seg.as_u8[offset + 4] |= qfi >> shift;
872 seg.as_u8[offset + 5] |= qfi << (8 - shift);
875 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
876 || gtpu_type == GTPU_TYPE_ECHO_REPLY
877 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
879 for (index = 0; index < 2; index++)
881 seg.as_u8[offset + 5 + index] |=
882 seqp[index] >> shift;
883 seg.as_u8[offset + 6 + index] |=
884 seqp[index] << (8 - shift);
889 for (index = 0; index < 4; index++)
891 seg.as_u8[offset + index + 5] |=
892 teidp[index] >> shift;
893 seg.as_u8[offset + index + 6] |=
894 teidp[index] << (8 - shift);
899 if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION))
903 payload_len = clib_net_to_host_u16 (hdr->gtpu.length);
905 && payload_len > hdr_len - sizeof (ip4_gtpu_header_t))
909 ies = (u8 *) ((u8 *) hdr + hdr_len);
911 payload_len - (hdr_len - sizeof (ip4_gtpu_header_t));
912 clib_memcpy_fast (ie_buf, ies, ie_size);
917 src6 = ls_param->v6src_prefix;
919 offset = ls_param->v6src_prefixlen / 8;
920 shift = ls_param->v6src_prefixlen % 8;
922 if (PREDICT_TRUE (shift == 0))
924 clib_memcpy_fast (&src6.as_u8[offset], srcp, 4);
928 for (index = 0; index < 4; index++)
930 src6.as_u8[offset + index] |= srcp[offset] >> shift;
931 src6.as_u8[offset + index + 1] |=
932 srcp[offset] << (8 - shift);
936 vlib_buffer_advance (b0, (word) hdr_len);
939 if (PREDICT_TRUE (gtpu_type == GTPU_TYPE_GTPU))
941 encap = vlib_buffer_get_current (b0);
944 len0 = vlib_buffer_length_in_chain (vm, b0);
947 mhash_get (&sm2->sr_policies_index_hash,
948 &ls_param->sr_prefix);
951 sr_policy = pool_elt_at_index (sm2->sr_policies, p[0]);
956 vec_foreach (sl_index, sr_policy->segments_lists)
958 sl = pool_elt_at_index (sm2->sid_lists, *sl_index);
966 hdr_len = sizeof (ip6srv_combo_header_t);
967 hdr_len += vec_len (sl->segments) * sizeof (ip6_address_t);
968 hdr_len += sizeof (ip6_address_t);
972 hdr_len = sizeof (ip6_header_t);
974 if (PREDICT_FALSE (gtpu_type != GTPU_TYPE_GTPU))
976 hdr_len += sizeof (ip6_sr_header_t);
977 hdr_len += sizeof (ip6_address_t);
984 sizeof (ip6_sr_tlv_t) + sizeof (user_plane_sub_tlv_t) +
987 tlv_siz = (tlv_siz & ~0x07) + (tlv_siz & 0x07 ? 0x08 : 0x0);
991 vlib_buffer_advance (b0, -(word) hdr_len);
992 ip6srv = vlib_buffer_get_current (b0);
996 clib_memcpy_fast (ip6srv, sl->rewrite,
997 vec_len (sl->rewrite));
999 if (vec_len (sl->segments) > 1)
1002 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
1004 ip6srv->sr.segments_left += 1;
1005 ip6srv->sr.last_entry += 1;
1007 ip6srv->sr.length += sizeof (ip6_address_t) / 8;
1008 ip6srv->sr.segments[0] = seg;
1010 clib_memcpy_fast (&ip6srv->sr.segments[1],
1011 (u8 *) (sl->rewrite +
1012 sizeof (ip6_header_t) +
1013 sizeof (ip6_sr_header_t)),
1014 vec_len (sl->segments) *
1015 sizeof (ip6_address_t));
1019 ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
1021 ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
1023 ip6srv->sr.segments_left = 1;
1024 ip6srv->sr.last_entry = 0;
1027 ((sizeof (ip6_sr_header_t) +
1028 sizeof (ip6_address_t)) / 8) - 1;
1029 ip6srv->sr.flags = 0;
1032 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
1034 ip6srv->sr.segments[0] = seg;
1035 if (vec_len (sl->segments))
1037 ip6srv->sr.segments[1] = sl->segments[0];
1038 ip6srv->sr.length += sizeof (ip6_address_t) / 8;
1039 ip6srv->sr.last_entry++;
1043 if (PREDICT_TRUE (encap != NULL))
1045 if (ls_param->nhtype == SRV6_NHTYPE_NONE)
1047 if ((clib_net_to_host_u32
1048 (encap->ip_version_traffic_class_and_flow_label)
1050 ip6srv->sr.protocol = IP_PROTOCOL_IPV6;
1052 ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP;
1054 else if (ls_param->nhtype == SRV6_NHTYPE_IPV4)
1056 ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP;
1057 if ((clib_net_to_host_u32
1058 (encap->ip_version_traffic_class_and_flow_label)
1061 // Bad encap packet.
1062 next0 = SRV6_T_M_GTP4_D_NEXT_DROP;
1067 else if (ls_param->nhtype == SRV6_NHTYPE_IPV6)
1069 ip6srv->sr.protocol = IP_PROTOCOL_IPV6;
1070 if ((clib_net_to_host_u32
1071 (encap->ip_version_traffic_class_and_flow_label)
1074 // Bad encap packet.
1075 next0 = SRV6_T_M_GTP4_D_NEXT_DROP;
1080 else if (ls_param->nhtype == SRV6_NHTYPE_NON_IP)
1082 ip6srv->sr.protocol = IP_PROTOCOL_IP6_ETHERNET;
1087 ip6srv->sr.protocol = IP_PROTOCOL_IP6_ETHERNET;
1092 clib_memcpy_fast (ip6srv, &sm->cache_hdr,
1093 sizeof (ip6_header_t));
1095 ip6srv->ip.dst_address = seg;
1097 if (PREDICT_FALSE (gtpu_type != GTPU_TYPE_GTPU))
1099 ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
1101 ip6srv->sr.protocol = IP_PROTOCOL_IP6_ETHERNET;
1104 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
1106 ip6srv->sr.segments_left = 0;
1107 ip6srv->sr.last_entry = 0;
1109 ip6srv->sr.length = sizeof (ip6_address_t) / 8;
1110 ip6srv->sr.segments[0] = seg;
1114 if (ls_param->nhtype == SRV6_NHTYPE_NONE)
1116 if ((clib_net_to_host_u32
1117 (encap->ip_version_traffic_class_and_flow_label)
1119 ip6srv->ip.protocol = IP_PROTOCOL_IPV6;
1121 ip6srv->ip.protocol = IP_PROTOCOL_IP_IN_IP;
1123 else if (ls_param->nhtype == SRV6_NHTYPE_IPV4)
1125 ip6srv->ip.protocol = IP_PROTOCOL_IP_IN_IP;
1126 if ((clib_net_to_host_u32
1127 (encap->ip_version_traffic_class_and_flow_label)
1130 // Bad encap packet.
1131 next0 = SRV6_T_M_GTP4_D_NEXT_DROP;
1136 else if (ls_param->nhtype == SRV6_NHTYPE_IPV6)
1138 ip6srv->ip.protocol = IP_PROTOCOL_IPV6;
1139 if ((clib_net_to_host_u32
1140 (encap->ip_version_traffic_class_and_flow_label)
1143 // Bad encap packet.
1144 next0 = SRV6_T_M_GTP4_D_NEXT_DROP;
1149 else if (ls_param->nhtype == SRV6_NHTYPE_NON_IP)
1151 ip6srv->ip.protocol = IP_PROTOCOL_IP6_ETHERNET;
1156 ip6srv->ip.src_address = src6;
1158 if (PREDICT_FALSE (ie_size))
1161 user_plane_sub_tlv_t *sub_tlv;
1164 (ip6_sr_tlv_t *) ((u8 *) ip6srv + (hdr_len - tlv_siz));
1165 tlv->type = SRH_TLV_USER_PLANE_CONTAINER;
1166 tlv->length = tlv_siz - sizeof (ip6_sr_tlv_t);
1167 clib_memset (tlv->value, 0, tlv->length);
1169 sub_tlv = (user_plane_sub_tlv_t *) tlv->value;
1170 sub_tlv->type = USER_PLANE_SUB_TLV_IE;
1171 sub_tlv->length = ie_size;
1172 clib_memcpy_fast (sub_tlv->value, ie_buf, ie_size);
1174 ip6srv->sr.length += tlv_siz / 8;
1177 ip6srv->ip.payload_length =
1178 clib_host_to_net_u16 (len0 + hdr_len - sizeof (ip6_header_t));
1182 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
1183 PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1185 srv6_end_rewrite_trace_t *tr =
1186 vlib_add_trace (vm, node, b0, sizeof (*tr));
1187 clib_memcpy (tr->src.as_u8, ip6srv->ip.src_address.as_u8,
1188 sizeof (tr->src.as_u8));
1189 clib_memcpy (tr->dst.as_u8, ip6srv->ip.dst_address.as_u8,
1190 sizeof (tr->dst.as_u8));
1195 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1196 n_left_to_next, bi0, next0);
1199 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1202 vlib_node_increment_counter (vm, sm->t_m_gtp4_d_node_index,
1203 SRV6_T_ERROR_M_GTP4_D_BAD_PACKETS, bad_n);
1205 vlib_node_increment_counter (vm, sm->t_m_gtp4_d_node_index,
1206 SRV6_T_ERROR_M_GTP4_D_PACKETS, good_n);
1208 return frame->n_vectors;
1211 VLIB_REGISTER_NODE (srv6_end_m_gtp4_e) =
1213 .name = "srv6-end-m-gtp4-e",.vector_size = sizeof (u32),.format_trace =
1214 format_srv6_end_rewrite_trace,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
1215 ARRAY_LEN (srv6_end_error_v4_strings),.error_strings =
1216 srv6_end_error_v4_strings,.n_next_nodes =
1217 SRV6_END_M_GTP4_E_N_NEXT,.next_nodes =
1219 [SRV6_END_M_GTP4_E_NEXT_DROP] =
1220 "error-drop",[SRV6_END_M_GTP4_E_NEXT_LOOKUP] = "ip4-lookup",}
1223 VLIB_REGISTER_NODE (srv6_t_m_gtp4_d) =
1225 .name = "srv6-t-m-gtp4-d",.vector_size = sizeof (u32),.format_trace =
1226 format_srv6_end_rewrite_trace,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
1227 ARRAY_LEN (srv6_t_error_v4_d_strings),.error_strings =
1228 srv6_t_error_v4_d_strings,.n_next_nodes =
1229 SRV6_T_M_GTP4_D_N_NEXT,.next_nodes =
1231 [SRV6_T_M_GTP4_D_NEXT_DROP] =
1232 "error-drop",[SRV6_T_M_GTP4_D_NEXT_LOOKUP] = "ip6-lookup",}
1235 // Function for SRv6 GTP6.E function
1236 VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm,
1237 vlib_node_runtime_t * node,
1238 vlib_frame_t * frame)
1240 srv6_end_main_v6_t *sm = &srv6_end_main_v6;
1241 ip6_sr_main_t *sm2 = &sr_main;
1242 u32 n_left_from, next_index, *from, *to_next;
1243 u32 thread_index = vm->thread_index;
1245 u32 good_n = 0, bad_n = 0;
1247 from = vlib_frame_vector_args (frame);
1248 n_left_from = frame->n_vectors;
1249 next_index = node->cached_next_index;
1251 while (n_left_from > 0)
1255 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1257 while (n_left_from > 0 && n_left_to_next > 0)
1261 ip6_sr_localsid_t *ls0;
1263 ip6srv_combo_header_t *ip6srv0;
1264 ip6_address_t dst0, src0, seg0;
1266 ip6_gtpu_header_t *hdr0 = NULL;
1274 u32 next0 = SRV6_END_M_GTP6_E_NEXT_LOOKUP;
1282 n_left_to_next -= 1;
1284 b0 = vlib_get_buffer (vm, bi0);
1286 pool_elt_at_index (sm2->localsids,
1287 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1289 ip6srv0 = vlib_buffer_get_current (b0);
1290 dst0 = ip6srv0->ip.dst_address;
1291 src0 = ip6srv0->ip.src_address;
1292 seg0 = ip6srv0->sr.segments[0];
1294 tag = ip6srv0->sr.tag;
1296 len0 = vlib_buffer_length_in_chain (vm, b0);
1298 if ((ip6srv0->ip.protocol != IPPROTO_IPV6_ROUTE)
1300 sizeof (ip6srv_combo_header_t) + 8 * ip6srv0->sr.length))
1302 next0 = SRV6_END_M_GTP6_E_NEXT_DROP;
1308 // we need to be sure there is enough space before
1309 // ip6srv0 header, there is some extra space
1310 // in the pre_data area for this kind of
1314 u8 *teid8p = (u8 *) & teid;
1322 u8 ie_buf[GTPU_IE_MAX_SIZ];
1324 index = ls0->localsid_prefix_len;
1329 gtpu_type = gtpu_type_get (tag);
1331 if (PREDICT_TRUE (shift == 0))
1333 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
1334 || gtpu_type == GTPU_TYPE_ECHO_REPLY
1335 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
1337 clib_memcpy_fast (&seq, &dst0.as_u8[offset], 2);
1341 clib_memcpy_fast (teid8p, &dst0.as_u8[offset], 4);
1344 qfi = dst0.as_u8[offset + 4];
1350 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
1351 || gtpu_type == GTPU_TYPE_ECHO_REPLY
1352 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
1355 for (index = 0; index < 2; index++)
1357 sp[index] = dst0.as_u8[offset + index] << shift;
1359 dst0.as_u8[offset + index + 1] >> (8 - shift);
1364 for (index = 0; index < 4; index++)
1366 *teid8p = dst0.as_u8[offset + index] << shift;
1368 dst0.as_u8[offset + index + 1] >> (8 - shift);
1373 qfi |= dst0.as_u8[offset + 4] << shift;
1374 qfi |= dst0.as_u8[offset + 5] >> (8 - shift);
1380 sizeof (gtpu_exthdr_t) + sizeof (gtpu_pdu_session_t);
1382 else if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
1383 || gtpu_type == GTPU_TYPE_ECHO_REPLY
1384 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
1386 hdrlen = sizeof (gtpu_exthdr_t);
1389 if (gtpu_type == GTPU_TYPE_ECHO_REPLY)
1391 hdrlen += sizeof (gtpu_recovery_ie);
1394 if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION))
1399 ext_len = ip6srv0->sr.length * 8;
1402 sizeof (ip6_address_t) * (ip6srv0->sr.last_entry + 1))
1405 (ip6_sr_tlv_t *) ((u8 *) & ip6srv0->sr +
1406 sizeof (ip6_sr_header_t) +
1407 sizeof (ip6_address_t) *
1408 (ip6srv0->sr.last_entry + 1));
1410 if (tlv->type == SRH_TLV_USER_PLANE_CONTAINER)
1412 user_plane_sub_tlv_t *sub_tlv;
1414 sub_tlv = (user_plane_sub_tlv_t *) tlv->value;
1416 ie_size = sub_tlv->length;
1417 clib_memcpy_fast (ie_buf, sub_tlv->value, ie_size);
1424 vlib_buffer_advance (b0,
1425 (word) sizeof (ip6srv_combo_header_t) +
1426 ip6srv0->sr.length * 8);
1428 // get length of encapsulated IPv6 packet (the remaining part)
1429 p = vlib_buffer_get_current (b0);
1431 plen = len0 = vlib_buffer_length_in_chain (vm, b0);
1435 hdrlen += sizeof (ip6_gtpu_header_t);
1437 vlib_buffer_advance (b0, -(word) hdrlen);
1439 hdr0 = vlib_buffer_get_current (b0);
1441 clib_memcpy_fast (hdr0, &sm->cache_hdr,
1442 sizeof (ip6_gtpu_header_t));
1444 hdr0->gtpu.teid = teid;
1445 hdr0->gtpu.length = clib_host_to_net_u16 (len0);
1447 hdr0->gtpu.type = gtpu_type;
1452 gtpu_pdu_session_t *sess;
1454 hdr0->gtpu.ver_flags |= GTPU_EXTHDR_FLAG;
1456 hdr0->gtpu.ext->seq = 0;
1457 hdr0->gtpu.ext->npdu_num = 0;
1458 hdr0->gtpu.ext->nextexthdr = GTPU_EXTHDR_PDU_SESSION;
1460 type = qfi & SRV6_PDU_SESSION_U_BIT_MASK;
1463 ((qfi & SRV6_PDU_SESSION_QFI_MASK) >> 2) |
1464 ((qfi & SRV6_PDU_SESSION_R_BIT_MASK) << 5);
1467 (gtpu_pdu_session_t *) (((char *) hdr0) +
1468 sizeof (ip6_gtpu_header_t) +
1469 sizeof (gtpu_exthdr_t));
1470 sess->exthdrlen = 1;
1474 sess->nextexthdr = 0;
1477 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
1478 || gtpu_type == GTPU_TYPE_ECHO_REPLY
1479 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
1481 hdr0->gtpu.ver_flags |= GTPU_SEQ_FLAG;
1482 hdr0->gtpu.ext->seq = seq;
1483 hdr0->gtpu.ext->npdu_num = 0;
1484 hdr0->gtpu.ext->nextexthdr = 0;
1486 if (gtpu_type == GTPU_TYPE_ECHO_REPLY)
1488 gtpu_recovery_ie *recovery;
1491 (gtpu_recovery_ie *) ((u8 *) hdr0 +
1493 sizeof (gtpu_recovery_ie)));
1494 recovery->type = GTPU_RECOVERY_IE_TYPE;
1495 recovery->restart_counter = 0;
1497 else if (gtpu_type == GTPU_TYPE_ERROR_INDICATION)
1503 ie_ptr = (u8 *) ((u8 *) hdr0 + (hdrlen - ie_size));
1504 clib_memcpy_fast (ie_ptr, ie_buf, ie_size);
1509 hdr0->udp.length = clib_host_to_net_u16 (len0 +
1510 sizeof (udp_header_t) +
1514 clib_memcpy_fast (hdr0->ip6.src_address.as_u8, src0.as_u8,
1515 sizeof (ip6_address_t));
1516 clib_memcpy_fast (hdr0->ip6.dst_address.as_u8, &seg0.as_u8,
1517 sizeof (ip6_address_t));
1519 hdr0->ip6.payload_length = clib_host_to_net_u16 (len0 +
1527 key = hash_memory (p, plen < 40 ? plen : 40, 0);
1528 port = hash_uword_to_u16 (&key);
1529 hdr0->udp.src_port = port;
1533 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
1534 PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1536 srv6_end_rewrite_trace_t *tr =
1537 vlib_add_trace (vm, node, b0, sizeof (*tr));
1538 clib_memcpy (tr->src.as_u8, hdr0->ip6.src_address.as_u8,
1539 sizeof (ip6_address_t));
1540 clib_memcpy (tr->dst.as_u8, hdr0->ip6.dst_address.as_u8,
1541 sizeof (ip6_address_t));
1542 tr->teid = hdr0->gtpu.teid;
1546 vlib_increment_combined_counter
1548 SRV6_END_M_GTP6_E_NEXT_DROP) ? &(sm2->sr_ls_invalid_counters) :
1549 &(sm2->sr_ls_valid_counters)), thread_index,
1550 ls0 - sm2->localsids, 1, vlib_buffer_length_in_chain (vm, b0));
1552 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1553 n_left_to_next, bi0, next0);
1556 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1559 vlib_node_increment_counter (vm, sm->end_m_gtp6_e_node_index,
1560 SRV6_END_ERROR_M_GTP6_E_BAD_PACKETS, bad_n);
1562 vlib_node_increment_counter (vm, sm->end_m_gtp6_e_node_index,
1563 SRV6_END_ERROR_M_GTP6_E_PACKETS, good_n);
1565 return frame->n_vectors;
1568 // Function for SRv6 GTP6.D function
1569 VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm,
1570 vlib_node_runtime_t * node,
1571 vlib_frame_t * frame)
1573 srv6_end_main_v6_decap_t *sm = &srv6_end_main_v6_decap;
1574 ip6_sr_main_t *sm2 = &sr_main;
1575 u32 n_left_from, next_index, *from, *to_next;
1576 u32 thread_index = vm->thread_index;
1578 u32 good_n = 0, bad_n = 0;
1580 from = vlib_frame_vector_args (frame);
1581 n_left_from = frame->n_vectors;
1582 next_index = node->cached_next_index;
1584 while (n_left_from > 0)
1588 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1590 while (n_left_from > 0 && n_left_to_next > 0)
1594 ip6_sr_localsid_t *ls0;
1595 srv6_end_gtp6_param_t *ls_param;
1597 ip6_gtpu_header_t *hdr0 = NULL;
1600 ip6_address_t seg0, src0;
1610 ip6_header_t *encap = NULL;
1611 gtpu_pdu_session_t *sess = NULL;
1614 u8 ie_buf[GTPU_IE_MAX_SIZ];
1616 u32 next0 = SRV6_END_M_GTP6_D_NEXT_LOOKUP;
1624 n_left_to_next -= 1;
1626 b0 = vlib_get_buffer (vm, bi0);
1628 pool_elt_at_index (sm2->localsids,
1629 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1631 ls_param = (srv6_end_gtp6_param_t *) ls0->plugin_mem;
1633 hdr0 = vlib_buffer_get_current (b0);
1635 hdrlen = sizeof (ip6_gtpu_header_t);
1637 len0 = vlib_buffer_length_in_chain (vm, b0);
1639 if ((hdr0->ip6.protocol != IP_PROTOCOL_UDP)
1640 || (hdr0->udp.dst_port !=
1641 clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT))
1642 || (len0 < sizeof (ip6_gtpu_header_t)))
1644 next0 = SRV6_END_M_GTP6_D_NEXT_DROP;
1650 seg0 = ls_param->sr_prefix;
1651 src0 = hdr0->ip6.src_address;
1653 gtpu_type = hdr0->gtpu.type;
1655 teid = hdr0->gtpu.teid;
1656 teidp = (u8 *) & teid;
1658 seqp = (u8 *) & seq;
1660 if (hdr0->gtpu.ver_flags & (GTPU_EXTHDR_FLAG | GTPU_SEQ_FLAG))
1662 // Extention header.
1663 hdrlen += sizeof (gtpu_exthdr_t);
1665 seq = hdr0->gtpu.ext->seq;
1667 if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION)
1669 // PDU Session Container.
1671 (gtpu_pdu_session_t *) (((char *) hdr0) +
1672 sizeof (ip6_gtpu_header_t) +
1673 sizeof (gtpu_exthdr_t));
1674 qfi = sess->u.val & ~GTPU_PDU_SESSION_P_BIT_MASK;
1675 qfip = (u8 *) & qfi;
1677 hdrlen += sizeof (gtpu_pdu_session_t);
1679 if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK)
1681 hdrlen += sizeof (gtpu_paging_policy_t);
1686 offset = ls_param->sr_prefixlen / 8;
1687 shift = ls_param->sr_prefixlen % 8;
1690 if (PREDICT_TRUE (shift == 0))
1692 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
1693 || gtpu_type == GTPU_TYPE_ECHO_REPLY
1694 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
1696 clib_memcpy_fast (&seg0.as_u8[offset], seqp, 2);
1700 clib_memcpy_fast (&seg0.as_u8[offset], teidp, 4);
1706 ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) |
1707 ((qfi & GTPU_PDU_SESSION_R_BIT_MASK) >> 5);
1711 qfi |= SRV6_PDU_SESSION_U_BIT_MASK;
1714 seg0.as_u8[offset + 4] = qfi;
1721 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
1722 || gtpu_type == GTPU_TYPE_ECHO_REPLY
1723 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
1725 for (idx = 0; idx < 2; idx++)
1727 seg0.as_u8[offset + idx] |= seqp[idx] >> shift;
1728 seg0.as_u8[offset + idx + 1] |=
1729 seqp[idx] << (8 - shift);
1734 for (idx = 0; idx < 4; idx++)
1736 seg0.as_u8[offset + idx] |= teidp[idx] >> shift;
1737 seg0.as_u8[offset + idx + 1] |=
1738 teidp[idx] << (8 - shift);
1745 ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) |
1746 ((qfi & ~GTPU_PDU_SESSION_R_BIT_MASK) >> 5);
1750 qfi |= SRV6_PDU_SESSION_U_BIT_MASK;
1753 seg0.as_u8[offset + 4] |= qfi >> shift;
1754 seg0.as_u8[offset + 5] |= qfi << (8 - shift);
1758 if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION))
1762 payload_len = clib_net_to_host_u16 (hdr0->gtpu.length);
1763 if (payload_len != 0
1764 && payload_len > hdrlen - sizeof (ip6_gtpu_header_t))
1768 ies = (u8 *) ((u8 *) hdr0 + hdrlen);
1770 payload_len - (hdrlen - sizeof (ip6_gtpu_header_t));
1771 clib_memcpy_fast (ie_buf, ies, ie_size);
1776 // jump over variable length data
1777 vlib_buffer_advance (b0, (word) hdrlen);
1779 // get length of encapsulated IPv6 packet (the remaining part)
1780 len0 = vlib_buffer_length_in_chain (vm, b0);
1782 if (PREDICT_TRUE (gtpu_type == GTPU_TYPE_GTPU))
1784 encap = vlib_buffer_get_current (b0);
1788 ip6srv_combo_header_t *ip6srv;
1789 ip6_sr_policy_t *sr_policy = NULL;
1790 ip6_sr_sl_t *sl = NULL;
1795 mhash_get (&sm2->sr_policies_index_hash,
1796 &ls_param->sr_prefix);
1799 sr_policy = pool_elt_at_index (sm2->sr_policies, p[0]);
1804 vec_foreach (sl_index, sr_policy->segments_lists)
1806 sl = pool_elt_at_index (sm2->sid_lists, *sl_index);
1814 hdr_len = sizeof (ip6srv_combo_header_t);
1815 hdr_len += vec_len (sl->segments) * sizeof (ip6_address_t);
1816 hdr_len += sizeof (ip6_address_t);
1820 hdr_len = sizeof (ip6_header_t);
1821 if (PREDICT_FALSE (gtpu_type) != GTPU_TYPE_GTPU)
1823 hdr_len += sizeof (ip6_sr_header_t);
1824 hdr_len += sizeof (ip6_address_t);
1831 sizeof (ip6_sr_tlv_t) + sizeof (user_plane_sub_tlv_t) +
1834 tlv_siz = (tlv_siz & ~0x07) + (tlv_siz & 0x07 ? 0x08 : 0x0);
1838 // jump back to data[0] or pre_data if required
1839 vlib_buffer_advance (b0, -(word) hdr_len);
1841 ip6srv = vlib_buffer_get_current (b0);
1845 clib_memcpy_fast (ip6srv, sl->rewrite,
1846 vec_len (sl->rewrite));
1848 if (vec_len (sl->segments) > 1)
1850 ip6srv->ip.src_address = src0;
1853 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
1855 ip6srv->sr.segments_left += 1;
1856 ip6srv->sr.last_entry += 1;
1858 ip6srv->sr.length += sizeof (ip6_address_t) / 8;
1859 ip6srv->sr.segments[0] = seg0;
1861 clib_memcpy_fast (&ip6srv->sr.segments[1],
1862 (u8 *) (sl->rewrite +
1863 sizeof (ip6_header_t) +
1864 sizeof (ip6_sr_header_t)),
1865 vec_len (sl->segments) *
1866 sizeof (ip6_address_t));
1870 ip6srv->ip.src_address = src0;
1871 ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
1873 ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
1874 ip6srv->sr.segments_left = 1;
1875 ip6srv->sr.last_entry = 0;
1877 ((sizeof (ip6_sr_header_t) +
1878 sizeof (ip6_address_t)) / 8) - 1;
1879 ip6srv->sr.flags = 0;
1882 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
1884 ip6srv->sr.segments[0] = seg0;
1886 if (vec_len (sl->segments))
1888 ip6srv->sr.segments[1] = sl->segments[0];
1889 ip6srv->sr.last_entry++;
1890 ip6srv->sr.length += sizeof (ip6_address_t) / 8;
1894 if (PREDICT_TRUE (encap != NULL))
1896 if (ls_param->nhtype == SRV6_NHTYPE_NONE)
1898 if ((clib_net_to_host_u32
1899 (encap->ip_version_traffic_class_and_flow_label)
1901 ip6srv->sr.protocol = IP_PROTOCOL_IPV6;
1903 ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP;
1905 else if (ls_param->nhtype == SRV6_NHTYPE_IPV4)
1907 ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP;
1908 if ((clib_net_to_host_u32
1909 (encap->ip_version_traffic_class_and_flow_label)
1912 // Bad encap packet.
1913 next0 = SRV6_END_M_GTP6_D_NEXT_DROP;
1918 else if (ls_param->nhtype == SRV6_NHTYPE_IPV6)
1920 ip6srv->sr.protocol = IP_PROTOCOL_IPV6;
1921 if ((clib_net_to_host_u32
1922 (encap->ip_version_traffic_class_and_flow_label)
1925 // Bad encap packet.
1926 next0 = SRV6_END_M_GTP6_D_NEXT_DROP;
1931 else if (ls_param->nhtype == SRV6_NHTYPE_NON_IP)
1933 ip6srv->sr.protocol = IP_PROTOCOL_IP6_ETHERNET;
1938 ip6srv->sr.protocol = IP_PROTOCOL_IP6_ETHERNET;
1943 clib_memcpy_fast (ip6srv, &sm->cache_hdr,
1944 sizeof (ip6_header_t));
1946 ip6srv->ip.src_address = src0;
1947 ip6srv->ip.dst_address = seg0;
1949 if (PREDICT_FALSE (gtpu_type) != GTPU_TYPE_GTPU)
1951 ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
1953 ip6srv->sr.protocol = IP_PROTOCOL_IP6_ETHERNET;
1956 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
1958 ip6srv->sr.segments_left = 0;
1959 ip6srv->sr.last_entry = 0;
1961 ip6srv->sr.length = sizeof (ip6_address_t) / 8;
1962 ip6srv->sr.segments[0] = seg0;
1966 if (ls_param->nhtype == SRV6_NHTYPE_NONE)
1968 if ((clib_net_to_host_u32
1969 (encap->ip_version_traffic_class_and_flow_label)
1971 ip6srv->ip.protocol = IP_PROTOCOL_IP_IN_IP;
1973 else if (ls_param->nhtype == SRV6_NHTYPE_IPV4)
1975 ip6srv->ip.protocol = IP_PROTOCOL_IP_IN_IP;
1976 if ((clib_net_to_host_u32
1977 (encap->ip_version_traffic_class_and_flow_label)
1980 // Bad encap packet.
1981 next0 = SRV6_END_M_GTP6_D_NEXT_DROP;
1986 else if (ls_param->nhtype == SRV6_NHTYPE_IPV6)
1988 ip6srv->ip.protocol = IP_PROTOCOL_IPV6;
1989 if ((clib_net_to_host_u32
1990 (encap->ip_version_traffic_class_and_flow_label)
1993 // Bad encap packet.
1994 next0 = SRV6_END_M_GTP6_D_NEXT_DROP;
1999 else if (ls_param->nhtype == SRV6_NHTYPE_NON_IP)
2001 ip6srv->ip.protocol = IP_PROTOCOL_IP6_ETHERNET;
2006 if (PREDICT_FALSE (ie_size))
2009 user_plane_sub_tlv_t *sub_tlv;
2012 (ip6_sr_tlv_t *) ((u8 *) ip6srv + (hdr_len - tlv_siz));
2013 tlv->type = SRH_TLV_USER_PLANE_CONTAINER;
2014 tlv->length = tlv_siz - sizeof (ip6_sr_tlv_t);
2015 clib_memset (tlv->value, 0, tlv->length);
2017 sub_tlv = (user_plane_sub_tlv_t *) tlv->value;
2018 sub_tlv->type = USER_PLANE_SUB_TLV_IE;
2019 sub_tlv->length = ie_size;
2020 clib_memcpy_fast (sub_tlv->value, ie_buf, ie_size);
2022 ip6srv->sr.length += tlv_siz / 8;
2025 ip6srv->ip.payload_length =
2026 clib_host_to_net_u16 (len0 + hdr_len - sizeof (ip6_header_t));
2030 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
2031 PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2033 srv6_end_rewrite_trace_t *tr =
2034 vlib_add_trace (vm, node, b0, sizeof (*tr));
2035 clib_memcpy (tr->src.as_u8, ip6srv->ip.src_address.as_u8,
2036 sizeof (ip6_address_t));
2037 clib_memcpy (tr->dst.as_u8, ip6srv->ip.dst_address.as_u8,
2038 sizeof (ip6_address_t));
2040 clib_memcpy (tr->sr_prefix.as_u8, ls_param->sr_prefix.as_u8,
2041 sizeof (ip6_address_t));
2042 tr->sr_prefixlen = ls_param->sr_prefixlen;
2047 vlib_increment_combined_counter
2049 SRV6_END_M_GTP6_D_NEXT_DROP) ? &(sm2->sr_ls_invalid_counters) :
2050 &(sm2->sr_ls_valid_counters)), thread_index,
2051 ls0 - sm2->localsids, 1, vlib_buffer_length_in_chain (vm, b0));
2053 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
2054 n_left_to_next, bi0, next0);
2057 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2060 vlib_node_increment_counter (vm, sm->end_m_gtp6_d_node_index,
2061 SRV6_END_ERROR_M_GTP6_D_BAD_PACKETS, bad_n);
2063 vlib_node_increment_counter (vm, sm->end_m_gtp6_d_node_index,
2064 SRV6_END_ERROR_M_GTP6_D_PACKETS, good_n);
2066 return frame->n_vectors;
2069 // Function for SRv6 GTP6.D.DI function
2070 VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm,
2071 vlib_node_runtime_t * node,
2072 vlib_frame_t * frame)
2074 srv6_end_main_v6_decap_di_t *sm = &srv6_end_main_v6_decap_di;
2075 ip6_sr_main_t *sm2 = &sr_main;
2076 u32 n_left_from, next_index, *from, *to_next;
2077 u32 thread_index = vm->thread_index;
2078 srv6_end_gtp6_param_t *ls_param;
2080 u32 good_n = 0, bad_n = 0;
2082 from = vlib_frame_vector_args (frame);
2083 n_left_from = frame->n_vectors;
2084 next_index = node->cached_next_index;
2086 while (n_left_from > 0)
2090 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
2092 while (n_left_from > 0 && n_left_to_next > 0)
2096 ip6_sr_localsid_t *ls0;
2098 ip6_gtpu_header_t *hdr0 = NULL;
2113 ip6_header_t *encap = NULL;
2114 gtpu_pdu_session_t *sess;
2117 u8 ie_buf[GTPU_IE_MAX_SIZ];
2119 u32 next0 = SRV6_END_M_GTP6_D_DI_NEXT_LOOKUP;
2127 n_left_to_next -= 1;
2129 b0 = vlib_get_buffer (vm, bi0);
2131 pool_elt_at_index (sm2->localsids,
2132 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
2134 ls_param = (srv6_end_gtp6_param_t *) ls0->plugin_mem;
2136 hdr0 = vlib_buffer_get_current (b0);
2138 hdrlen = sizeof (ip6_gtpu_header_t);
2140 len0 = vlib_buffer_length_in_chain (vm, b0);
2142 if ((hdr0->ip6.protocol != IP_PROTOCOL_UDP)
2143 || (hdr0->udp.dst_port !=
2144 clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT))
2145 || (len0 < sizeof (ip6_gtpu_header_t)))
2147 next0 = SRV6_END_M_GTP6_D_DI_NEXT_DROP;
2153 dst0 = hdr0->ip6.dst_address;
2154 src0 = hdr0->ip6.src_address;
2156 gtpu_type = hdr0->gtpu.type;
2158 seg0 = ls_param->sr_prefix;
2159 teid = hdr0->gtpu.teid;
2160 teidp = (u8 *) & teid;
2162 seqp = (u8 *) & seq;
2164 if (hdr0->gtpu.ver_flags & (GTPU_EXTHDR_FLAG | GTPU_SEQ_FLAG))
2166 // Extention header.
2167 hdrlen += sizeof (gtpu_exthdr_t);
2169 seq = hdr0->gtpu.ext->seq;
2171 if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION)
2173 // PDU Session Container.
2175 (gtpu_pdu_session_t *) (((char *) hdr0) + hdrlen);
2176 qfi = sess->u.val & ~GTPU_PDU_SESSION_P_BIT_MASK;
2179 hdrlen += sizeof (gtpu_pdu_session_t);
2181 if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK)
2183 hdrlen += sizeof (gtpu_paging_policy_t);
2188 offset = ls_param->sr_prefixlen / 8;
2189 shift = ls_param->sr_prefixlen % 8;
2192 if (PREDICT_TRUE (shift == 0))
2194 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
2195 || gtpu_type == GTPU_TYPE_ECHO_REPLY
2196 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
2198 clib_memcpy_fast (&seg0.as_u8[offset], seqp, 2);
2202 clib_memcpy_fast (&seg0.as_u8[offset], teidp, 4);
2208 ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) |
2209 ((qfi & GTPU_PDU_SESSION_R_BIT_MASK) >> 5);
2213 qfi |= SRV6_PDU_SESSION_U_BIT_MASK;
2216 seg0.as_u8[offset + 4] = qfi;
2223 if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
2224 || gtpu_type == GTPU_TYPE_ECHO_REPLY
2225 || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
2227 for (idx = 0; idx < 2; idx++)
2229 seg0.as_u8[offset + idx] |= seqp[idx] >> shift;
2230 seg0.as_u8[offset + idx + 1] |=
2231 seqp[idx] << (8 - shift);
2236 for (idx = 0; idx < 4; idx++)
2238 seg0.as_u8[offset + idx] |= teidp[idx] >> shift;
2239 seg0.as_u8[offset + idx + 1] |=
2240 teidp[idx] << (8 - shift);
2247 ((qfi & GTPU_PDU_SESSION_QFI_MASK) << 2) |
2248 ((qfi & GTPU_PDU_SESSION_R_BIT_MASK) >> 5);
2252 qfi |= SRV6_PDU_SESSION_U_BIT_MASK;
2255 seg0.as_u8[offset + 4] |= qfi >> shift;
2256 seg0.as_u8[offset + 5] |= qfi << (8 - shift);
2260 if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION))
2264 payload_len = clib_net_to_host_u16 (hdr0->gtpu.length);
2265 if (payload_len != 0
2266 && payload_len > hdrlen - sizeof (ip6_gtpu_header_t))
2270 ies = (u8 *) ((u8 *) hdr0 + hdrlen);
2272 payload_len - (hdrlen - sizeof (ip6_gtpu_header_t));
2273 clib_memcpy_fast (ie_buf, ies, ie_size);
2278 // jump over variable length data
2279 vlib_buffer_advance (b0, (word) hdrlen);
2281 // get length of encapsulated IPv6 packet (the remaining part)
2282 len0 = vlib_buffer_length_in_chain (vm, b0);
2284 if (PREDICT_TRUE (gtpu_type == GTPU_TYPE_GTPU))
2286 encap = vlib_buffer_get_current (b0);
2290 ip6srv_combo_header_t *ip6srv;
2291 ip6_sr_policy_t *sr_policy = NULL;
2292 ip6_sr_sl_t *sl = NULL;
2297 mhash_get (&sm2->sr_policies_index_hash,
2298 &ls_param->sr_prefix);
2301 sr_policy = pool_elt_at_index (sm2->sr_policies, p[0]);
2306 vec_foreach (sl_index, sr_policy->segments_lists)
2308 sl = pool_elt_at_index (sm2->sid_lists, *sl_index);
2314 hdr_len = sizeof (ip6srv_combo_header_t);
2317 hdr_len += vec_len (sl->segments) * sizeof (ip6_address_t);
2319 hdr_len += sizeof (ip6_address_t) * 2;
2324 sizeof (ip6_sr_tlv_t) + sizeof (user_plane_sub_tlv_t) +
2327 tlv_siz = (tlv_siz & ~0x07) + (tlv_siz & 0x07 ? 0x08 : 0x0);
2331 // jump back to data[0] or pre_data if required
2332 vlib_buffer_advance (b0, -(word) hdr_len);
2334 ip6srv = vlib_buffer_get_current (b0);
2338 clib_memcpy_fast (ip6srv, sl->rewrite,
2339 vec_len (sl->rewrite));
2341 if (vec_len (sl->segments) > 1)
2343 ip6srv->ip.src_address = src0;
2346 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
2348 ip6srv->sr.segments_left += 2;
2349 ip6srv->sr.last_entry += 2;
2351 ip6srv->sr.length += ((sizeof (ip6_address_t) * 2) / 8);
2353 ip6srv->sr.segments[0] = dst0;
2354 ip6srv->sr.segments[1] = seg0;
2356 clib_memcpy_fast (&ip6srv->sr.segments[2],
2357 (u8 *) (sl->rewrite +
2358 sizeof (ip6_header_t) +
2359 sizeof (ip6_sr_header_t)),
2360 vec_len (sl->segments) *
2361 sizeof (ip6_address_t));
2365 ip6srv->ip.src_address = src0;
2366 ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
2368 ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
2369 ip6srv->sr.segments_left = 2;
2370 ip6srv->sr.last_entry = 1;
2372 ((sizeof (ip6_sr_header_t) +
2373 2 * sizeof (ip6_address_t)) / 8) - 1;
2374 ip6srv->sr.flags = 0;
2377 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
2379 ip6srv->sr.segments[0] = dst0;
2380 ip6srv->sr.segments[1] = seg0;
2382 if (vec_len (sl->segments))
2384 ip6srv->sr.segments[2] = sl->segments[0];
2385 ip6srv->sr.last_entry++;
2386 ip6srv->sr.length += sizeof (ip6_address_t) / 8;
2392 clib_memcpy_fast (ip6srv, &sm->cache_hdr,
2393 sizeof (ip6_header_t));
2395 ip6srv->ip.src_address = src0;
2396 ip6srv->ip.dst_address = seg0;
2398 ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
2399 ip6srv->sr.segments_left = 1;
2400 ip6srv->sr.last_entry = 0;
2402 ((sizeof (ip6_sr_header_t) +
2403 sizeof (ip6_address_t)) / 8) - 1;
2404 ip6srv->sr.flags = 0;
2407 clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
2409 ip6srv->sr.segments[0] = dst0;
2412 if (PREDICT_FALSE (ie_size))
2415 user_plane_sub_tlv_t *sub_tlv;
2418 (ip6_sr_tlv_t *) ((u8 *) ip6srv + (hdr_len - tlv_siz));
2419 tlv->type = SRH_TLV_USER_PLANE_CONTAINER;
2420 tlv->length = tlv_siz - sizeof (ip6_sr_tlv_t);
2421 clib_memset (tlv->value, 0, tlv->length);
2423 sub_tlv = (user_plane_sub_tlv_t *) tlv->value;
2424 sub_tlv->length = ie_size;
2425 clib_memcpy_fast (sub_tlv->value, ie_buf, ie_size);
2427 ip6srv->sr.length += tlv_siz / 8;
2430 ip6srv->ip.payload_length =
2431 clib_host_to_net_u16 (len0 + hdr_len - sizeof (ip6_header_t));
2432 ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
2434 if (PREDICT_TRUE (encap != NULL))
2436 if (ls_param->nhtype == SRV6_NHTYPE_NONE)
2438 if ((clib_net_to_host_u32
2439 (encap->ip_version_traffic_class_and_flow_label) >>
2441 ip6srv->sr.protocol = IP_PROTOCOL_IPV6;
2443 ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP;
2445 else if (ls_param->nhtype == SRV6_NHTYPE_IPV4)
2447 ip6srv->sr.protocol = IP_PROTOCOL_IP_IN_IP;
2448 if ((clib_net_to_host_u32
2449 (encap->ip_version_traffic_class_and_flow_label) >>
2452 // Bad encap packet.
2453 next0 = SRV6_END_M_GTP6_D_DI_NEXT_DROP;
2458 else if (ls_param->nhtype == SRV6_NHTYPE_IPV6)
2460 ip6srv->sr.protocol = IP_PROTOCOL_IPV6;
2461 if ((clib_net_to_host_u32
2462 (encap->ip_version_traffic_class_and_flow_label) >>
2465 // Bad encap packet.
2466 next0 = SRV6_END_M_GTP6_D_DI_NEXT_DROP;
2471 else if (ls_param->nhtype == SRV6_NHTYPE_NON_IP)
2473 ip6srv->sr.protocol = IP_PROTOCOL_IP6_ETHERNET;
2478 ip6srv->sr.protocol = IP_PROTOCOL_IP6_ETHERNET;
2483 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
2484 PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2486 srv6_end_rewrite_trace_t *tr =
2487 vlib_add_trace (vm, node, b0, sizeof (*tr));
2488 clib_memcpy (tr->src.as_u8, ip6srv->ip.src_address.as_u8,
2489 sizeof (ip6_address_t));
2490 clib_memcpy (tr->dst.as_u8, ip6srv->ip.dst_address.as_u8,
2491 sizeof (ip6_address_t));
2493 clib_memcpy (tr->sr_prefix.as_u8, ls_param->sr_prefix.as_u8,
2494 sizeof (ip6_address_t));
2495 tr->sr_prefixlen = ls_param->sr_prefixlen;
2500 vlib_increment_combined_counter
2502 SRV6_END_M_GTP6_D_DI_NEXT_DROP) ?
2503 &(sm2->sr_ls_invalid_counters) : &(sm2->sr_ls_valid_counters)),
2504 thread_index, ls0 - sm2->localsids, 1,
2505 vlib_buffer_length_in_chain (vm, b0));
2507 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
2508 n_left_to_next, bi0, next0);
2511 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2514 vlib_node_increment_counter (vm, sm->end_m_gtp6_d_di_node_index,
2515 SRV6_END_ERROR_M_GTP6_D_DI_BAD_PACKETS, bad_n);
2517 vlib_node_increment_counter (vm, sm->end_m_gtp6_d_di_node_index,
2518 SRV6_END_ERROR_M_GTP6_D_DI_PACKETS, good_n);
2520 return frame->n_vectors;
2523 // Function for SRv6 GTP6.DT function
2524 VLIB_NODE_FN (srv6_end_m_gtp6_dt) (vlib_main_t * vm,
2525 vlib_node_runtime_t * node,
2526 vlib_frame_t * frame)
2528 srv6_end_main_v6_dt_t *sm = &srv6_end_main_v6_dt;
2529 ip6_sr_main_t *sm2 = &sr_main;
2530 u32 n_left_from, next_index, *from, *to_next;
2531 u32 thread_index = vm->thread_index;
2533 u32 good_n = 0, bad_n = 0;
2535 from = vlib_frame_vector_args (frame);
2536 n_left_from = frame->n_vectors;
2537 next_index = node->cached_next_index;
2539 while (n_left_from > 0)
2543 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
2545 while (n_left_from > 0 && n_left_to_next > 0)
2549 srv6_end_gtp6_dt_param_t *ls_param;
2550 ip6_sr_localsid_t *ls0;
2552 ip6_gtpu_header_t *hdr0 = NULL;
2553 ip4_header_t *ip4 = NULL;
2554 ip6_header_t *ip6 = NULL;
2555 ip6_address_t src, dst;
2560 u32 next0 = SRV6_END_M_GTP6_DT_NEXT_DROP;
2567 n_left_to_next -= 1;
2569 b0 = vlib_get_buffer (vm, bi0);
2571 pool_elt_at_index (sm2->localsids,
2572 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
2574 ls_param = (srv6_end_gtp6_dt_param_t *) ls0->plugin_mem;
2576 hdr0 = vlib_buffer_get_current (b0);
2578 hdrlen = sizeof (ip6_gtpu_header_t);
2580 len0 = vlib_buffer_length_in_chain (vm, b0);
2582 if ((hdr0->ip6.protocol != IP_PROTOCOL_UDP)
2583 || (hdr0->udp.dst_port !=
2584 clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT))
2585 || (len0 < sizeof (ip6_gtpu_header_t)))
2587 next0 = SRV6_END_M_GTP6_DT_NEXT_DROP;
2593 clib_memcpy_fast (src.as_u8, hdr0->ip6.src_address.as_u8,
2594 sizeof (ip6_address_t));
2595 clib_memcpy_fast (dst.as_u8, hdr0->ip6.dst_address.as_u8,
2596 sizeof (ip6_address_t));
2598 teid = hdr0->gtpu.teid;
2600 if (hdr0->gtpu.ver_flags & GTPU_EXTHDR_FLAG)
2602 hdrlen += sizeof (gtpu_exthdr_t);
2603 if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION)
2605 gtpu_pdu_session_t *sess;
2608 (gtpu_pdu_session_t *) (((char *) hdr0) +
2609 sizeof (ip6_gtpu_header_t) +
2610 sizeof (gtpu_exthdr_t));
2612 hdrlen += sizeof (gtpu_pdu_session_t);
2613 if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK)
2615 hdrlen += sizeof (gtpu_paging_policy_t);
2620 if (ls_param->type == SRV6_GTP6_DT4)
2622 vlib_buffer_advance (b0, (word) hdrlen);
2623 ip4 = vlib_buffer_get_current (b0);
2624 if ((ip4->ip_version_and_header_length & 0xf0) != 0x40)
2626 next0 = SRV6_END_M_GTP6_DT_NEXT_DROP;
2631 next0 = SRV6_END_M_GTP6_DT_NEXT_LOOKUP4;
2632 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2633 ls_param->fib4_index;
2635 else if (ls_param->type == SRV6_GTP6_DT6)
2637 ip6 = (ip6_header_t *) ((u8 *) hdr0 + hdrlen);
2638 if ((clib_net_to_host_u32
2639 (ip6->ip_version_traffic_class_and_flow_label) >> 28)
2642 next0 = SRV6_END_M_GTP6_DT_NEXT_DROP;
2647 next0 = SRV6_END_M_GTP6_DT_NEXT_LOOKUP6;
2648 if ((ip6->dst_address.as_u8[0] == 0xff)
2649 && ((ip6->dst_address.as_u8[1] & 0xc0) == 0x80))
2651 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2652 ls_param->local_fib_index;
2656 vlib_buffer_advance (b0, (word) hdrlen);
2657 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2658 ls_param->fib6_index;
2661 else if (ls_param->type == SRV6_GTP6_DT46)
2663 ip6 = (ip6_header_t *) ((u8 *) hdr0 + hdrlen);
2664 if ((clib_net_to_host_u32
2665 (ip6->ip_version_traffic_class_and_flow_label) >> 28)
2668 next0 = SRV6_END_M_GTP6_DT_NEXT_LOOKUP6;
2669 if ((ip6->dst_address.as_u8[0] == 0xff)
2670 && ((ip6->dst_address.as_u8[1] & 0xc0) == 0x80))
2672 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2673 ls_param->local_fib_index;
2677 vlib_buffer_advance (b0, (word) hdrlen);
2678 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2679 ls_param->fib6_index;
2683 if ((clib_net_to_host_u32
2684 (ip6->ip_version_traffic_class_and_flow_label) >> 28)
2687 vlib_buffer_advance (b0, (word) hdrlen);
2688 next0 = SRV6_END_M_GTP6_DT_NEXT_LOOKUP4;
2689 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2690 ls_param->fib4_index;
2694 next0 = SRV6_END_M_GTP6_DT_NEXT_DROP;
2701 next0 = SRV6_END_M_GTP6_DT_NEXT_DROP;
2708 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
2709 PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2711 srv6_end_rewrite_trace_t *tr =
2712 vlib_add_trace (vm, node, b0, sizeof (*tr));
2713 clib_memcpy (tr->src.as_u8, src.as_u8,
2714 sizeof (ip6_address_t));
2715 clib_memcpy (tr->dst.as_u8, dst.as_u8,
2716 sizeof (ip6_address_t));
2722 vlib_increment_combined_counter
2724 SRV6_END_M_GTP6_DT_NEXT_DROP) ? &(sm2->sr_ls_invalid_counters)
2725 : &(sm2->sr_ls_valid_counters)), thread_index,
2726 ls0 - sm2->localsids, 1, vlib_buffer_length_in_chain (vm, b0));
2728 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
2729 n_left_to_next, bi0, next0);
2732 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2735 vlib_node_increment_counter (vm, sm->end_m_gtp6_dt_node_index,
2736 SRV6_END_ERROR_M_GTP6_DT_BAD_PACKETS, bad_n);
2738 vlib_node_increment_counter (vm, sm->end_m_gtp6_dt_node_index,
2739 SRV6_END_ERROR_M_GTP6_DT_PACKETS, good_n);
2741 return frame->n_vectors;
2744 // Function for SRv6 GTP4.DT function
2745 VLIB_NODE_FN (srv6_t_m_gtp4_dt) (vlib_main_t * vm,
2746 vlib_node_runtime_t * node,
2747 vlib_frame_t * frame)
2749 srv6_t_main_v4_dt_t *sm = &srv6_t_main_v4_dt;
2750 ip6_sr_main_t *sm2 = &sr_main;
2751 u32 n_left_from, next_index, *from, *to_next;
2753 u32 good_n = 0, bad_n = 0;
2755 from = vlib_frame_vector_args (frame);
2756 n_left_from = frame->n_vectors;
2757 next_index = node->cached_next_index;
2759 while (n_left_from > 0)
2763 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
2765 while (n_left_from > 0 && n_left_to_next > 0)
2769 srv6_t_gtp4_dt_param_t *ls_param;
2772 ip4_gtpu_header_t *hdr0 = NULL;
2773 ip4_header_t *ip4 = NULL;
2774 ip6_header_t *ip6 = NULL;
2775 ip6_address_t src, dst;
2780 u32 next0 = SRV6_T_M_GTP4_DT_NEXT_DROP;
2787 n_left_to_next -= 1;
2789 b0 = vlib_get_buffer (vm, bi0);
2791 pool_elt_at_index (sm2->sid_lists,
2792 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
2794 ls_param = (srv6_t_gtp4_dt_param_t *) ls0->plugin_mem;
2796 hdr0 = vlib_buffer_get_current (b0);
2798 hdrlen = sizeof (ip4_gtpu_header_t);
2800 len0 = vlib_buffer_length_in_chain (vm, b0);
2802 if ((hdr0->ip4.protocol != IP_PROTOCOL_UDP)
2803 || (hdr0->udp.dst_port !=
2804 clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT))
2805 || (len0 < sizeof (ip4_gtpu_header_t)))
2807 next0 = SRV6_T_M_GTP4_DT_NEXT_DROP;
2813 clib_memcpy_fast (src.as_u8, hdr0->ip4.src_address.as_u8,
2814 sizeof (ip4_address_t));
2815 clib_memcpy_fast (dst.as_u8, hdr0->ip4.dst_address.as_u8,
2816 sizeof (ip4_address_t));
2818 teid = hdr0->gtpu.teid;
2820 if (hdr0->gtpu.ver_flags & GTPU_EXTHDR_FLAG)
2822 hdrlen += sizeof (gtpu_exthdr_t);
2823 if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION)
2825 gtpu_pdu_session_t *sess;
2828 (gtpu_pdu_session_t *) (((char *) hdr0) +
2829 sizeof (ip6_gtpu_header_t) +
2830 sizeof (gtpu_exthdr_t));
2832 hdrlen += sizeof (gtpu_pdu_session_t);
2833 if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK)
2835 hdrlen += sizeof (gtpu_paging_policy_t);
2840 if (ls_param->type == SRV6_GTP4_DT4)
2842 vlib_buffer_advance (b0, (word) hdrlen);
2843 ip4 = vlib_buffer_get_current (b0);
2844 if ((ip4->ip_version_and_header_length & 0xf0) != 0x40)
2846 next0 = SRV6_T_M_GTP4_DT_NEXT_DROP;
2851 next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP4;
2852 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2853 ls_param->fib4_index;
2855 else if (ls_param->type == SRV6_GTP4_DT6)
2857 ip6 = (ip6_header_t *) ((u8 *) hdr0 + hdrlen);
2858 if ((clib_net_to_host_u32
2859 (ip6->ip_version_traffic_class_and_flow_label) >> 28)
2862 next0 = SRV6_T_M_GTP4_DT_NEXT_DROP;
2867 next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP6;
2868 if ((ip6->dst_address.as_u8[0] == 0xff)
2869 && ((ip6->dst_address.as_u8[1] & 0xc0) == 0x80))
2871 next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP4;
2872 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2873 ls_param->local_fib_index;
2877 vlib_buffer_advance (b0, (word) hdrlen);
2878 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2879 ls_param->fib6_index;
2882 else if (ls_param->type == SRV6_GTP4_DT46)
2884 ip6 = (ip6_header_t *) ((u8 *) hdr0 + hdrlen);
2885 if ((clib_net_to_host_u32
2886 (ip6->ip_version_traffic_class_and_flow_label) >> 28)
2889 next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP6;
2890 if ((ip6->dst_address.as_u8[0] == 0xff)
2891 && ((ip6->dst_address.as_u8[1] & 0xc0) == 0x80))
2893 next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP4;
2894 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2895 ls_param->local_fib_index;
2899 vlib_buffer_advance (b0, (word) hdrlen);
2900 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2901 ls_param->fib6_index;
2905 if ((clib_net_to_host_u32
2906 (ip6->ip_version_traffic_class_and_flow_label) >> 28)
2909 vlib_buffer_advance (b0, (word) hdrlen);
2910 next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP4;
2911 vnet_buffer (b0)->sw_if_index[VLIB_TX] =
2912 ls_param->fib4_index;
2916 next0 = SRV6_T_M_GTP4_DT_NEXT_DROP;
2923 next0 = SRV6_T_M_GTP4_DT_NEXT_DROP;
2930 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
2931 PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2933 srv6_end_rewrite_trace_t *tr =
2934 vlib_add_trace (vm, node, b0, sizeof (*tr));
2935 clib_memcpy (tr->src.as_u8, src.as_u8,
2936 sizeof (ip6_address_t));
2937 clib_memcpy (tr->dst.as_u8, dst.as_u8,
2938 sizeof (ip6_address_t));
2944 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
2945 n_left_to_next, bi0, next0);
2948 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2951 vlib_node_increment_counter (vm, sm->t_m_gtp4_dt_node_index,
2952 SRV6_T_ERROR_M_GTP4_DT_BAD_PACKETS, bad_n);
2954 vlib_node_increment_counter (vm, sm->t_m_gtp4_dt_node_index,
2955 SRV6_T_ERROR_M_GTP4_DT_PACKETS, good_n);
2957 return frame->n_vectors;
2960 VLIB_REGISTER_NODE (srv6_end_m_gtp6_e) =
2962 .name = "srv6-end-m-gtp6-e",.vector_size = sizeof (u32),.format_trace =
2963 format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
2964 ARRAY_LEN (srv6_end_error_v6_e_strings),.error_strings =
2965 srv6_end_error_v6_e_strings,.n_next_nodes =
2966 SRV6_END_M_GTP6_E_N_NEXT,.next_nodes =
2968 [SRV6_END_M_GTP6_E_NEXT_DROP] =
2969 "error-drop",[SRV6_END_M_GTP6_E_NEXT_LOOKUP] = "ip6-lookup",}
2972 VLIB_REGISTER_NODE (srv6_end_m_gtp6_d) =
2974 .name = "srv6-end-m-gtp6-d",.vector_size = sizeof (u32),.format_trace =
2975 format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
2976 ARRAY_LEN (srv6_end_error_v6_d_strings),.error_strings =
2977 srv6_end_error_v6_d_strings,.n_next_nodes =
2978 SRV6_END_M_GTP6_D_N_NEXT,.next_nodes =
2980 [SRV6_END_M_GTP6_D_NEXT_DROP] =
2981 "error-drop",[SRV6_END_M_GTP6_D_NEXT_LOOKUP] = "ip6-lookup",}
2984 VLIB_REGISTER_NODE (srv6_end_m_gtp6_d_di) =
2986 .name = "srv6-end-m-gtp6-d-di",.vector_size = sizeof (u32),.format_trace =
2987 format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
2988 ARRAY_LEN (srv6_end_error_v6_d_di_strings),.error_strings =
2989 srv6_end_error_v6_d_di_strings,.n_next_nodes =
2990 SRV6_END_M_GTP6_D_DI_N_NEXT,.next_nodes =
2992 [SRV6_END_M_GTP6_D_DI_NEXT_DROP] = "error-drop",
2993 [SRV6_END_M_GTP6_D_DI_NEXT_LOOKUP] = "ip6-lookup",}
2996 VLIB_REGISTER_NODE (srv6_end_m_gtp6_dt) =
2998 .name = "srv6-end-m-gtp6-dt",.vector_size = sizeof (u32),.format_trace =
2999 format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
3000 ARRAY_LEN (srv6_end_error_v6_dt_strings),.error_strings =
3001 srv6_end_error_v6_dt_strings,.n_next_nodes =
3002 SRV6_END_M_GTP6_DT_N_NEXT,.next_nodes =
3004 [SRV6_END_M_GTP6_DT_NEXT_DROP] =
3006 [SRV6_END_M_GTP6_DT_NEXT_LOOKUP4]
3007 = "ip4-lookup",[SRV6_END_M_GTP6_DT_NEXT_LOOKUP6] = "ip6-lookup",}
3010 VLIB_REGISTER_NODE (srv6_t_m_gtp4_dt) =
3012 .name = "srv6-t-m-gtp4-dt",.vector_size = sizeof (u32),.format_trace =
3013 format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
3014 ARRAY_LEN (srv6_t_error_v4_dt_strings),.error_strings =
3015 srv6_t_error_v4_dt_strings,.n_next_nodes =
3016 SRV6_T_M_GTP4_DT_N_NEXT,.next_nodes =
3018 [SRV6_T_M_GTP4_DT_NEXT_DROP] =
3020 [SRV6_T_M_GTP4_DT_NEXT_LOOKUP4] =
3021 "ip4-lookup",[SRV6_T_M_GTP4_DT_NEXT_LOOKUP6] = "ip6-lookup",}
3025 * fd.io coding-style-patch-verification: ON
3028 * eval: (c-set-style "gnu")