/* * Copyright (c) 2015 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "map.h" #include <vnet/ip/ip4_to_ip6.h> #include <vnet/ip/ip6_to_ip4.h> #include <vnet/ip/ip_frag.h> typedef enum { IP6_MAPT_NEXT_MAPT_TCP_UDP, IP6_MAPT_NEXT_MAPT_ICMP, IP6_MAPT_NEXT_MAPT_FRAGMENTED, IP6_MAPT_NEXT_DROP, IP6_MAPT_N_NEXT } ip6_mapt_next_t; typedef enum { IP6_MAPT_ICMP_NEXT_IP4_LOOKUP, IP6_MAPT_ICMP_NEXT_IP4_FRAG, IP6_MAPT_ICMP_NEXT_DROP, IP6_MAPT_ICMP_N_NEXT } ip6_mapt_icmp_next_t; typedef enum { IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP, IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG, IP6_MAPT_TCP_UDP_NEXT_DROP, IP6_MAPT_TCP_UDP_N_NEXT } ip6_mapt_tcp_udp_next_t; typedef enum { IP6_MAPT_FRAGMENTED_NEXT_IP4_LOOKUP, IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG, IP6_MAPT_FRAGMENTED_NEXT_DROP, IP6_MAPT_FRAGMENTED_N_NEXT } ip6_mapt_fragmented_next_t; typedef struct { map_domain_t *d; u16 sender_port; } icmp6_to_icmp_ctx_t; static int ip6_to_ip4_set_icmp_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) { icmp6_to_icmp_ctx_t *ctx = arg; u32 ip4_sadr; // Security check // Note that this prevents an intermediate IPv6 router from answering // the request. ip4_sadr = map_get_ip4 (&ip6->src_address, ctx->d->flags); if (ip6->src_address.as_u64[0] != map_get_pfx_net (ctx->d, ip4_sadr, ctx->sender_port) || ip6->src_address.as_u64[1] != map_get_sfx_net (ctx->d, ip4_sadr, ctx->sender_port)) return -1; ip4->dst_address.as_u32 = ip6_map_t_embedded_address (ctx->d, &ip6->dst_address); ip4->src_address.as_u32 = ip4_sadr; return 0; } static int ip6_to_ip4_set_inner_icmp_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) { icmp6_to_icmp_ctx_t *ctx = arg; u32 inner_ip4_dadr; //Security check of inner packet inner_ip4_dadr = map_get_ip4 (&ip6->dst_address, ctx->d->flags); if (ip6->dst_address.as_u64[0] != map_get_pfx_net (ctx->d, inner_ip4_dadr, ctx->sender_port) || ip6->dst_address.as_u64[1] != map_get_sfx_net (ctx->d, inner_ip4_dadr, ctx->sender_port)) return -1; ip4->dst_address.as_u32 = inner_ip4_dadr; ip4->src_address.as_u32 = ip6_map_t_embedded_address (ctx->d, &ip6->src_address); return 0; } static uword ip6_map_t_icmp (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { u32 n_left_from, *from, next_index, *to_next, n_left_to_next; vlib_node_runtime_t *error_node = vlib_node_get_runtime (vm, ip6_map_t_icmp_node.index); from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; vlib_combined_counter_main_t *cm = map_main.domain_counters; u32 thread_index = vm->thread_index; while (n_left_from > 0) { vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { u32 pi0; vlib_buffer_t *p0; u8 error0; ip6_mapt_icmp_next_t next0; map_domain_t *d0; u16 len0; icmp6_to_icmp_ctx_t ctx0; ip6_header_t *ip60; pi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next += 1; n_left_to_next -= 1; error0 = MAP_ERROR_NONE; next0 = IP6_MAPT_ICMP_NEXT_IP4_LOOKUP; p0 = vlib_get_buffer (vm, pi0); ip60 = vlib_buffer_get_current (p0); len0 = clib_net_to_host_u16 (ip60->payload_length); d0 = pool_elt_at_index (map_main.domains, vnet_buffer (p0)->map_t.map_domain_index); ctx0.sender_port = ip6_get_port (ip60, 0, p0->current_length); ctx0.d = d0; if (ctx0.sender_port == 0) { // In case of 1:1 mapping, we don't care about the port if (!(d0->ea_bits_len == 0 && d0->rules)) { error0 = MAP_ERROR_ICMP; goto err0; } } if (icmp6_to_icmp (p0, ip6_to_ip4_set_icmp_cb, &ctx0, ip6_to_ip4_set_inner_icmp_cb, &ctx0)) { error0 = MAP_ERROR_ICMP; goto err0; } if (vnet_buffer (p0)->map_t.mtu < p0->current_length) { // Send to fragmentation node if necessary vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP; next0 = IP6_MAPT_ICMP_NEXT_IP4_FRAG; } err0: if (PREDICT_TRUE (error0 == MAP_ERROR_NONE)) { vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX, thread_index, vnet_buffer (p0)-> map_t.map_domain_index, 1, len0); } else { next0 = IP6_MAPT_ICMP_NEXT_DROP; } p0->error = error_node->errors[error0]; vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, pi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } /* * Translate IPv6 fragmented packet to IPv4. */ always_inline int map_ip6_to_ip4_fragmented (vlib_buffer_t * p) { ip6_header_t *ip6; ip6_frag_hdr_t *frag; ip4_header_t *ip4; u16 frag_id; u8 frag_more; u16 frag_offset; u8 l4_protocol; u16 l4_offset; ip6 = vlib_buffer_get_current (p); if (ip6_parse (ip6, p->current_length, &l4_protocol, &l4_offset, &frag_offset)) return -1; frag = (ip6_frag_hdr_t *) u8_ptr_add (ip6, frag_offset); ip4 = (ip4_header_t *) u8_ptr_add (ip6, l4_offset - sizeof (*ip4)); vlib_buffer_advance (p, l4_offset - sizeof (*ip4)); frag_id = frag_id_6to4 (frag->identification); frag_more = ip6_frag_hdr_more (frag); frag_offset = ip6_frag_hdr_offset (frag); ip4->dst_address.as_u32 = vnet_buffer (p)->map_t.v6.daddr; ip4->src_address.as_u32 = vnet_buffer (p)->map_t.v6.saddr; ip4->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS; ip4->tos = ip6_translate_tos (ip6); ip4->length = u16_net_add (ip6->payload_length, sizeof (*ip4) - l4_offset + sizeof (*ip6)); ip4->fragment_id = frag_id; ip4->flags_and_fragment_offset = clib_host_to_net_u16 (frag_offset | (frag_more ? IP4_HEADER_FLAG_MORE_FRAGMENTS : 0)); ip4->ttl = ip6->hop_limit; ip4->protocol = (l4_protocol == IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : l4_protocol; ip4->checksum = ip4_header_checksum (ip4); return 0; } static uword ip6_map_t_fragmented (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { u32 n_left_from, *from, next_index, *to_next, n_left_to_next; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; vlib_node_runtime_t *error_node = vlib_node_get_runtime (vm, ip6_map_t_fragmented_node.index); while (n_left_from > 0) { vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { u32 pi0; vlib_buffer_t *p0; u32 next0; pi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next += 1; n_left_to_next -= 1; next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP; p0 = vlib_get_buffer (vm, pi0); if (map_ip6_to_ip4_fragmented (p0)) { p0->error = error_node->errors[MAP_ERROR_FRAGMENT_DROPPED]; next0 = IP6_MAPT_FRAGMENTED_NEXT_DROP; } else { if (vnet_buffer (p0)->map_t.mtu < p0->current_length) { // Send to fragmentation node if necessary vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP; next0 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG; } } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, pi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } /* * Translate IPv6 UDP/TCP packet to IPv4. */ always_inline int map_ip6_to_ip4_tcp_udp (vlib_buffer_t * p, bool udp_checksum) { map_main_t *mm = &map_main; ip6_header_t *ip6; u16 *checksum; ip_csum_t csum = 0; ip4_header_t *ip4; u16 fragment_id; u16 flags; u16 frag_offset; u8 l4_protocol; u16 l4_offset; ip6_address_t old_src, old_dst; ip6 = vlib_buffer_get_current (p); if (ip6_parse (ip6, p->current_length, &l4_protocol, &l4_offset, &frag_offset)) return -1; if (l4_protocol == IP_PROTOCOL_TCP) { tcp_header_t *tcp = ip6_next_header (ip6); if (mm->tcp_mss > 0) { csum = tcp->checksum; map_mss_clamping (tcp, &csum, mm->tcp_mss); tcp->checksum = ip_csum_fold (csum); } checksum = &tcp->checksum; } else { udp_header_t *udp = ip6_next_header (ip6); checksum = &udp->checksum; } old_src.as_u64[0] = ip6->src_address.as_u64[0]; old_src.as_u64[1] = ip6->src_address.as_u64[1]; old_dst.as_u64[0] = ip6->dst_address.as_u64[0]; old_dst.as_u64[1] = ip6->dst_address.as_u64[1]; ip4 = (ip4_header_t *) u8_ptr_add (ip6, l4_offset - sizeof (*ip4)); vlib_buffer_advance (p, l4_offset - sizeof (*ip4)); if (PREDICT_FALSE (frag_offset)) { // Only the first fragment ip6_frag_hdr_t *hdr = (ip6_frag_hdr_t *) u8_ptr_add (ip6, frag_offset); fragment_id = frag_id_6to4 (hdr->identification); flags = clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS); } else { fragment_id = 0; flags = 0; } ip4->dst_address.as_u32 = vnet_buffer (p)->map_t.v6.daddr; ip4->src_address.as_u32 = vnet_buffer (p)->map_t.v6.saddr; ip4->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS; ip4->tos = ip6_translate_tos (ip6); ip4->length = u16_net_add (ip6->payload_length, sizeof (*ip4) + sizeof (*ip6) - l4_offset); ip4->fragment_id = fragment_id; ip4->flags_and_fragment_offset = flags; ip4->ttl = ip6->hop_limit; ip4->protocol = l4_protocol; ip4->checksum = ip4_header_checksum (ip4); // UDP checksum is optional over IPv4 if (!udp_checksum && l4_protocol == IP_PROTOCOL_UDP) { *checksum = 0; } else { csum = ip_csum_sub_even (*checksum, old_src.as_u64[0]); csum = ip_csum_sub_even (csum, old_src.as_u64[1]); csum = ip_csum_sub_even (csum, old_dst.as_u64[0]); csum = ip_csum_sub_even (csum, old_dst.as_u64[1]); csum = ip_csum_add_even (csum, ip4->dst_address.as_u32); csum = ip_csum_add_even (csum, ip4->src_address.as_u32); *checksum = ip_csum_fold (csum); } return 0; } static uword ip6_map_t_tcp_udp (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { u32 n_left_from, *from, next_index, *to_next, n_left_to_next; vlib_node_runtime_t *error_node = vlib_node_get_runtime (vm, ip6_map_t_tcp_udp_node.index); from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { u32 pi0; vlib_buffer_t *p0; ip6_mapt_tcp_udp_next_t next0; pi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next += 1; n_left_to_next -= 1; next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP; p0 = vlib_get_buffer (vm, pi0); if (map_ip6_to_ip4_tcp_udp (p0, true)) { p0->error = error_node->errors[MAP_ERROR_UNKNOWN]; next0 = IP6_MAPT_TCP_UDP_NEXT_DROP; } else { if (vnet_buffer (p0)->map_t.mtu < p0->current_length) { // Send to fragmentation node if necessary vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP; next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG; } } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, pi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } static uword ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { u32 n_left_from, *from, next_index, *to_next, n_left_to_next; vlib_node_runtime_t *error_node = vlib_node_get_runtime (vm, ip6_map_t_node.index); vlib_combined_counter_main_t *cm = map_main.domain_counters; u32 thread_index = vm->thread_index; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { u32 pi0; vlib_buffer_t *p0; ip6_header_t *ip60; u8 error0; u32 l4_len0; i32 map_port0; map_domain_t *d0; ip6_frag_hdr_t *frag0; ip6_mapt_next_t next0 = 0; u32 saddr; pi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next += 1; n_left_to_next -= 1; error0 = MAP_ERROR_NONE; p0 = vlib_get_buffer (vm, pi0); u16 l4_dst_port = vnet_buffer (p0)->ip.reass.l4_dst_port; ip60 = vlib_buffer_get_current (p0); d0 = ip6_map_get_domain (&ip60->dst_address, &vnet_buffer (p0)->map_t.map_domain_index, &error0); if (!d0) { /* Guess it wasn't for us */ vnet_feature_next (&next0, p0); goto exit; } saddr = map_get_ip4 (&ip60->src_address, d0->ip6_src_len); vnet_buffer (p0)->map_t.v6.saddr = saddr; vnet_buffer (p0)->map_t.v6.daddr = ip6_map_t_embedded_address (d0, &ip60->dst_address); vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0; if (PREDICT_FALSE (ip6_parse (ip60, p0->current_length, &(vnet_buffer (p0)->map_t.v6.l4_protocol), &(vnet_buffer (p0)->map_t.v6.l4_offset), &(vnet_buffer (p0)->map_t.v6.frag_offset)))) { error0 = error0 == MAP_ERROR_NONE ? MAP_ERROR_MALFORMED : error0; } map_port0 = -1; l4_len0 = (u32) clib_net_to_host_u16 (ip60->payload_length) + sizeof (*ip60) - vnet_buffer (p0)->map_t.v6.l4_offset; frag0 = (ip6_frag_hdr_t *) u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6. frag_offset); if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset && ip6_frag_hdr_offset (frag0))) { map_port0 = l4_dst_port; next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED; } else if (PREDICT_TRUE (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_TCP)) { error0 = l4_len0 < sizeof (tcp_header_t) ? MAP_ERROR_MALFORMED : error0; vnet_buffer (p0)->map_t.checksum_offset = vnet_buffer (p0)->map_t.v6.l4_offset + 16; next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP; map_port0 = l4_dst_port; } else if (PREDICT_TRUE (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_UDP)) { error0 = l4_len0 < sizeof (udp_header_t) ? MAP_ERROR_MALFORMED : error0; vnet_buffer (p0)->map_t.checksum_offset = vnet_buffer (p0)->map_t.v6.l4_offset + 6; next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP; map_port0 = l4_dst_port; } else if (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6) { error0 = l4_len0 < sizeof (icmp46_header_t) ? MAP_ERROR_MALFORMED : error0; next0 = IP6_MAPT_NEXT_MAPT_ICMP; if (((icmp46_header_t *) u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset))->code == ICMP6_echo_reply || ((icmp46_header_t *) u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset))-> code == ICMP6_echo_request) map_port0 = l4_dst_port; } else { // TODO: In case of 1:1 mapping, it might be possible to // do something with those packets. error0 = MAP_ERROR_BAD_PROTOCOL; } if (PREDICT_FALSE (map_port0 != -1) && (ip60->src_address.as_u64[0] != map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr, map_port0) || ip60->src_address.as_u64[1] != map_get_sfx_net (d0, vnet_buffer (p0)->map_t. v6.saddr, map_port0))) { // Security check when map_port0 is not zero (non-first // fragment, UDP or TCP) error0 = error0 == MAP_ERROR_NONE ? MAP_ERROR_SEC_CHECK : error0; } if (PREDICT_TRUE (error0 == MAP_ERROR_NONE && next0 != IP6_MAPT_NEXT_MAPT_ICMP)) { vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX, thread_index, vnet_buffer (p0)->map_t. map_domain_index, 1, clib_net_to_host_u16 (ip60-> payload_length)); } next0 = (error0 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next0; p0->error = error_node->errors[error0]; if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED)) { map_add_trace (vm, node, p0, vnet_buffer (p0)->map_t.map_domain_index, map_port0); } exit: vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, pi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } static char *map_t_error_strings[] = { #define _(sym, string) string, foreach_map_error #undef _ }; /* *INDENT-OFF* */ VLIB_REGISTER_NODE(ip6_map_t_fragmented_node) = { .function = ip6_map_t_fragmented, .name = "ip6-map-t-fragmented", .vector_size = sizeof (u32), .format_trace = format_map_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = MAP_N_ERROR, .error_strings = map_t_error_strings, .n_next_nodes = IP6_MAPT_FRAGMENTED_N_NEXT, .next_nodes = { [IP6_MAPT_FRAGMENTED_NEXT_IP4_LOOKUP] = "ip4-lookup", [IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME, [IP6_MAPT_FRAGMENTED_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ /* *INDENT-OFF* */ VLIB_REGISTER_NODE(ip6_map_t_icmp_node) = { .function = ip6_map_t_icmp, .name = "ip6-map-t-icmp", .vector_size = sizeof (u32), .format_trace = format_map_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = MAP_N_ERROR, .error_strings = map_t_error_strings, .n_next_nodes = IP6_MAPT_ICMP_N_NEXT, .next_nodes = { [IP6_MAPT_ICMP_NEXT_IP4_LOOKUP] = "ip4-lookup", [IP6_MAPT_ICMP_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME, [IP6_MAPT_ICMP_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ /* *INDENT-OFF* */ VLIB_REGISTER_NODE(ip6_map_t_tcp_udp_node) = { .function = ip6_map_t_tcp_udp, .name = "ip6-map-t-tcp-udp", .vector_size = sizeof (u32), .format_trace = format_map_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = MAP_N_ERROR, .error_strings = map_t_error_strings, .n_next_nodes = IP6_MAPT_TCP_UDP_N_NEXT, .next_nodes = { [IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP] = "ip4-lookup", [IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME, [IP6_MAPT_TCP_UDP_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ /* *INDENT-OFF* */ VNET_FEATURE_INIT (ip6_map_t_feature, static) = { .arc_name = "ip6-unicast", .node_name = "ip6-map-t", .runs_before = VNET_FEATURES ("ip6-flow-classify"), .runs_after = VNET_FEATURES ("ip6-sv-reassembly-feature"), }; VLIB_REGISTER_NODE(ip6_map_t_node) = { .function = ip6_map_t, .name = "ip6-map-t", .vector_size = sizeof(u32), .format_trace = format_map_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = MAP_N_ERROR, .error_strings = map_t_error_strings, .n_next_nodes = IP6_MAPT_N_NEXT, .next_nodes = { [IP6_MAPT_NEXT_MAPT_TCP_UDP] = "ip6-map-t-tcp-udp", [IP6_MAPT_NEXT_MAPT_ICMP] = "ip6-map-t-icmp", [IP6_MAPT_NEXT_MAPT_FRAGMENTED] = "ip6-map-t-fragmented", [IP6_MAPT_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */