/* * 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 "../ip/ip_frag.h" #define IP4_MAP_T_DUAL_LOOP 1 typedef enum { IP4_MAPT_NEXT_MAPT_TCP_UDP, IP4_MAPT_NEXT_MAPT_ICMP, IP4_MAPT_NEXT_MAPT_FRAGMENTED, IP4_MAPT_NEXT_DROP, IP4_MAPT_N_NEXT } ip4_mapt_next_t; typedef enum { IP4_MAPT_ICMP_NEXT_IP6_LOOKUP, IP4_MAPT_ICMP_NEXT_IP6_FRAG, IP4_MAPT_ICMP_NEXT_DROP, IP4_MAPT_ICMP_N_NEXT } ip4_mapt_icmp_next_t; typedef enum { IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP, IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG, IP4_MAPT_TCP_UDP_NEXT_DROP, IP4_MAPT_TCP_UDP_N_NEXT } ip4_mapt_tcp_udp_next_t; typedef enum { IP4_MAPT_FRAGMENTED_NEXT_IP6_LOOKUP, IP4_MAPT_FRAGMENTED_NEXT_IP6_FRAG, IP4_MAPT_FRAGMENTED_NEXT_DROP, IP4_MAPT_FRAGMENTED_N_NEXT } ip4_mapt_fragmented_next_t; //This is used to pass information within the buffer data. //Buffer structure being too small to contain big structures like this. /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { ip6_address_t daddr; ip6_address_t saddr; //IPv6 header + Fragmentation header will be here //sizeof(ip6) + sizeof(ip_frag) - sizeof(ip4) u8 unused[28]; }) ip4_mapt_pseudo_header_t; /* *INDENT-ON* */ #define frag_id_4to6(id) (id) //TODO: Find the right place in memory for this. /* *INDENT-OFF* */ static u8 icmp_to_icmp6_updater_pointer_table[] = { 0, 1, 4, 4, ~0, ~0, ~0, ~0, 7, 6, ~0, ~0, 8, 8, 8, 8, 24, 24, 24, 24 }; /* *INDENT-ON* */ static_always_inline int ip4_map_fragment_cache (ip4_header_t * ip4, u16 port) { u32 *ignore = NULL; map_ip4_reass_lock (); map_ip4_reass_t *r = map_ip4_reass_get (ip4->src_address.as_u32, ip4->dst_address.as_u32, ip4->fragment_id, (ip4->protocol == IP_PROTOCOL_ICMP) ? IP_PROTOCOL_ICMP6 : ip4->protocol, &ignore); if (r) r->port = port; map_ip4_reass_unlock (); return !r; } static_always_inline i32 ip4_map_fragment_get_port (ip4_header_t * ip4) { u32 *ignore = NULL; map_ip4_reass_lock (); map_ip4_reass_t *r = map_ip4_reass_get (ip4->src_address.as_u32, ip4->dst_address.as_u32, ip4->fragment_id, (ip4->protocol == IP_PROTOCOL_ICMP) ? IP_PROTOCOL_ICMP6 : ip4->protocol, &ignore); i32 ret = r ? r->port : -1; map_ip4_reass_unlock (); return ret; } /* Statelessly translates an ICMP packet into ICMPv6. * * Warning: The checksum will need to be recomputed. * */ static_always_inline int ip4_icmp_to_icmp6_in_place (icmp46_header_t * icmp, u32 icmp_len, i32 * receiver_port, ip4_header_t ** inner_ip4) { *inner_ip4 = NULL; switch (icmp->type) { case ICMP4_echo_reply: *receiver_port = ((u16 *) icmp)[2]; icmp->type = ICMP6_echo_reply; break; case ICMP4_echo_request: *receiver_port = ((u16 *) icmp)[2]; icmp->type = ICMP6_echo_request; break; case ICMP4_destination_unreachable: *inner_ip4 = (ip4_header_t *) (((u8 *) icmp) + 8); *receiver_port = ip4_get_port (*inner_ip4, MAP_SENDER, icmp_len - 8); switch (icmp->code) { case ICMP4_destination_unreachable_destination_unreachable_net: //0 case ICMP4_destination_unreachable_destination_unreachable_host: //1 icmp->type = ICMP6_destination_unreachable; icmp->code = ICMP6_destination_unreachable_no_route_to_destination; break; case ICMP4_destination_unreachable_protocol_unreachable: //2 icmp->type = ICMP6_parameter_problem; icmp->code = ICMP6_parameter_problem_unrecognized_next_header; break; case ICMP4_destination_unreachable_port_unreachable: //3 icmp->type = ICMP6_destination_unreachable; icmp->code = ICMP6_destination_unreachable_port_unreachable; break; case ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set: //4 icmp->type = ICMP6_packet_too_big; icmp->code = 0; { u32 advertised_mtu = clib_net_to_host_u32 (*((u32 *) (icmp + 1))); if (advertised_mtu) advertised_mtu += 20; else advertised_mtu = 1000; //FIXME ! (RFC 1191 - plateau value) //FIXME: = minimum(advertised MTU+20, MTU_of_IPv6_nexthop, (MTU_of_IPv4_nexthop)+20) *((u32 *) (icmp + 1)) = clib_host_to_net_u32 (advertised_mtu); } break; case ICMP4_destination_unreachable_source_route_failed: //5 case ICMP4_destination_unreachable_destination_network_unknown: //6 case ICMP4_destination_unreachable_destination_host_unknown: //7 case ICMP4_destination_unreachable_source_host_isolated: //8 case ICMP4_destination_unreachable_network_unreachable_for_type_of_service: //11 case ICMP4_destination_unreachable_host_unreachable_for_type_of_service: //12 icmp->type = ICMP6_destination_unreachable; icmp->code = ICMP6_destination_unreachable_no_route_to_destination; break; case ICMP4_destination_unreachable_network_administratively_prohibited: //9 case ICMP4_destination_unreachable_host_administratively_prohibited: //10 case ICMP4_destination_unreachable_communication_administratively_prohibited: //13 case ICMP4_destination_unreachable_precedence_cutoff_in_effect: //15 icmp->type = ICMP6_destination_unreachable; icmp->code = ICMP6_destination_unreachable_destination_administratively_prohibited; break; case ICMP4_destination_unreachable_host_precedence_violation: //14 default: return -1; } break; case ICMP4_time_exceeded: //11 *inner_ip4 = (ip4_header_t *) (((u8 *) icmp) + 8); *receiver_port = ip4_get_port (*inner_ip4, MAP_SENDER, icmp_len - 8); icmp->type = ICMP6_time_exceeded; //icmp->code = icmp->code //unchanged break; case ICMP4_parameter_problem: *inner_ip4 = (ip4_header_t *) (((u8 *) icmp) + 8); *receiver_port = ip4_get_port (*inner_ip4, MAP_SENDER, icmp_len - 8); switch (icmp->code) { case ICMP4_parameter_problem_pointer_indicates_error: case ICMP4_parameter_problem_bad_length: icmp->type = ICMP6_parameter_problem; icmp->code = ICMP6_parameter_problem_erroneous_header_field; { u8 ptr = icmp_to_icmp6_updater_pointer_table[*((u8 *) (icmp + 1))]; if (ptr == 0xff) return -1; *((u32 *) (icmp + 1)) = clib_host_to_net_u32 (ptr); } break; default: //All other codes cause dropping the packet return -1; } break; default: //All other types cause dropping the packet return -1; break; } return 0; } static_always_inline void _ip4_map_t_icmp (map_domain_t * d, vlib_buffer_t * p, u8 * error) { ip4_header_t *ip4, *inner_ip4; ip6_header_t *ip6, *inner_ip6; u32 ip_len; icmp46_header_t *icmp; i32 recv_port; ip_csum_t csum; u16 *inner_L4_checksum = 0; ip6_frag_hdr_t *inner_frag; u32 inner_frag_id; u32 inner_frag_offset; u8 inner_frag_more; ip4 = vlib_buffer_get_current (p); ip_len = clib_net_to_host_u16 (ip4->length); ASSERT (ip_len <= p->current_length); icmp = (icmp46_header_t *) (ip4 + 1); if (ip4_icmp_to_icmp6_in_place (icmp, ip_len - sizeof (*ip4), &recv_port, &inner_ip4)) { *error = MAP_ERROR_ICMP; return; } if (recv_port < 0) { // In case of 1:1 mapping, we don't care about the port if (d->ea_bits_len == 0 && d->rules) { recv_port = 0; } else { *error = MAP_ERROR_ICMP; return; } } if (inner_ip4) { //We have 2 headers to translate. //We need to make some room in the middle of the packet if (PREDICT_FALSE (ip4_is_fragment (inner_ip4))) { //Here it starts getting really tricky //We will add a fragmentation header in the inner packet if (!ip4_is_first_fragment (inner_ip4)) { //For now we do not handle unless it is the first fragment //Ideally we should handle the case as we are in slow path already *error = MAP_ERROR_FRAGMENTED; return; } vlib_buffer_advance (p, -2 * (sizeof (*ip6) - sizeof (*ip4)) - sizeof (*inner_frag)); ip6 = vlib_buffer_get_current (p); clib_memcpy (u8_ptr_add (ip6, sizeof (*ip6) - sizeof (*ip4)), ip4, 20 + 8); ip4 = (ip4_header_t *) u8_ptr_add (ip6, sizeof (*ip6) - sizeof (*ip4)); icmp = (icmp46_header_t *) (ip4 + 1); inner_ip6 = (ip6_header_t *) u8_ptr_add (inner_ip4, sizeof (*ip4) - sizeof (*ip6) - sizeof (*inner_frag)); inner_frag = (ip6_frag_hdr_t *) u8_ptr_add (inner_ip6, sizeof (*inner_ip6)); ip6->payload_length = u16_net_add (ip4->length, sizeof (*ip6) - 2 * sizeof (*ip4) + sizeof (*inner_frag)); inner_frag_id = frag_id_4to6 (inner_ip4->fragment_id); inner_frag_offset = ip4_get_fragment_offset (inner_ip4); inner_frag_more = ! !(inner_ip4->flags_and_fragment_offset & clib_net_to_host_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS)); } else { vlib_buffer_advance (p, -2 * (sizeof (*ip6) - sizeof (*ip4))); ip6 = vlib_buffer_get_current (p); clib_memcpy (u8_ptr_add (ip6, sizeof (*ip6) - sizeof (*ip4)), ip4, 20 + 8); ip4 = (ip4_header_t *) u8_ptr_add (ip6, sizeof (*ip6) - sizeof (*ip4)); icmp = (icmp46_header_t *) u8_ptr_add (ip4, sizeof (*ip4)); inner_ip6 = (ip6_header_t *) u8_ptr_add (inner_ip4, sizeof (*ip4) - sizeof (*ip6)); ip6->payload_length = u16_net_add (ip4->length, sizeof (*ip6) - 2 * sizeof (*ip4)); inner_frag = NULL; } if (PREDICT_TRUE (inner_ip4->protocol == IP_PROTOCOL_TCP)) { inner_L4_checksum = &((tcp_header_t *) (inner_ip4 + 1))->checksum; *inner_L4_checksum = ip_csum_fold (ip_csum_sub_even (*inner_L4_checksum, *((u64 *) (&inner_ip4->src_address)))); } else if (PREDICT_TRUE (inner_ip4->protocol == IP_PROTOCOL_UDP)) { inner_L4_checksum = &((udp_header_t *) (inner_ip4 + 1))->checksum; if (!*inner_L4_checksum) { //The inner packet was first translated, and therefore came from IPv6. //As the packet was an IPv6 packet, the UDP checksum can't be NULL *error = MAP_ERROR_ICMP; return; } *inner_L4_checksum = ip_csum_fold (ip_csum_sub_even (*inner_L4_checksum, *((u64 *) (&inner_ip4->src_address)))); } else if (inner_ip4->protocol == IP_PROTOCOL_ICMP) { //We have an ICMP inside an ICMP //It needs to be translated, but not for error ICMP messages icmp46_header_t *inner_icmp = (icmp46_header_t *) (inner_ip4 + 1); csum = inner_icmp->checksum; //Only types ICMP4_echo_request and ICMP4_echo_reply are handled by ip4_icmp_to_icmp6_in_place csum = ip_csum_sub_even (csum, *((u16 *) inner_icmp)); inner_icmp->type = (inner_icmp->type == ICMP4_echo_request) ? ICMP6_echo_request : ICMP6_echo_reply; csum = ip_csum_add_even (csum, *((u16 *) inner_icmp)); csum = ip_csum_add_even (csum, clib_host_to_net_u16 (IP_PROTOCOL_ICMP6)); csum = ip_csum_add_even (csum, inner_ip4->length - sizeof (*inner_ip4)); inner_icmp->checksum = ip_csum_fold (csum); inner_L4_checksum = &inner_icmp->checksum; inner_ip4->protocol = IP_PROTOCOL_ICMP6; } else { /* To shut up Coverity */ os_panic (); } //FIXME: Security check with the port found in the inner packet csum = *inner_L4_checksum; //Initial checksum of the inner L4 header //FIXME: Shouldn't we remove ip addresses from there ? inner_ip6->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ((6 << 28) + (inner_ip4->tos << 20)); inner_ip6->payload_length = u16_net_add (inner_ip4->length, -sizeof (*inner_ip4)); inner_ip6->hop_limit = inner_ip4->ttl; inner_ip6->protocol = inner_ip4->protocol; //Note that the source address is within the domain //while the destination address is the one outside the domain ip4_map_t_embedded_address (d, &inner_ip6->dst_address, &inner_ip4->dst_address); inner_ip6->src_address.as_u64[0] = map_get_pfx_net (d, inner_ip4->src_address.as_u32, recv_port); inner_ip6->src_address.as_u64[1] = map_get_sfx_net (d, inner_ip4->src_address.as_u32, recv_port); if (PREDICT_FALSE (inner_frag != NULL)) { inner_frag->next_hdr = inner_ip6->protocol; inner_frag->identification = inner_frag_id; inner_frag->rsv = 0; inner_frag->fragment_offset_and_more = ip6_frag_hdr_offset_and_more (inner_frag_offset, inner_frag_more); inner_ip6->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION; inner_ip6->payload_length = clib_host_to_net_u16 (clib_net_to_host_u16 (inner_ip6->payload_length) + sizeof (*inner_frag)); } csum = ip_csum_add_even (csum, inner_ip6->src_address.as_u64[0]); csum = ip_csum_add_even (csum, inner_ip6->src_address.as_u64[1]); csum = ip_csum_add_even (csum, inner_ip6->dst_address.as_u64[0]); csum = ip_csum_add_even (csum, inner_ip6->dst_address.as_u64[1]); *inner_L4_checksum = ip_csum_fold (csum); } else { vlib_buffer_advance (p, sizeof (*ip4) - sizeof (*ip6)); ip6 = vlib_buffer_get_current (p); ip6->payload_length = clib_host_to_net_u16 (clib_net_to_host_u16 (ip4->length) - sizeof (*ip4)); } //Translate outer IPv6 ip6->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ((6 << 28) + (ip4->tos << 20)); ip6->hop_limit = ip4->ttl; ip6->protocol = IP_PROTOCOL_ICMP6; ip4_map_t_embedded_address (d, &ip6->src_address, &ip4->src_address); ip6->dst_address.as_u64[0] = map_get_pfx_net (d, ip4->dst_address.as_u32, recv_port); ip6->dst_address.as_u64[1] = map_get_sfx_net (d, ip4->dst_address.as_u32, recv_port); //Truncate when the packet exceeds the minimal IPv6 MTU if (p->current_length > 1280) { ip6->payload_length = clib_host_to_net_u16 (1280 - sizeof (*ip6)); p->current_length = 1280; //Looks too simple to be correct... } //TODO: We could do an easy diff-checksum for echo requests/replies //Recompute ICMP checksum icmp->checksum = 0; csum = ip_csum_with_carry (0, ip6->payload_length); csum = ip_csum_with_carry (csum, clib_host_to_net_u16 (ip6->protocol)); csum = ip_csum_with_carry (csum, ip6->src_address.as_u64[0]); csum = ip_csum_with_carry (csum, ip6->src_address.as_u64[1]); csum = ip_csum_with_carry (csum, ip6->dst_address.as_u64[0]); csum = ip_csum_with_carry (csum, ip6->dst_address.as_u64[1]); csum = ip_incremental_checksum (csum, icmp, clib_net_to_host_u16 (ip6->payload_length)); icmp->checksum = ~ip_csum_fold (csum); } static uword ip4_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, ip4_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 cpu_index = os_get_cpu_number (); 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; ip4_mapt_icmp_next_t next0; u8 error0; map_domain_t *d0; u16 len0; next0 = IP4_MAPT_ICMP_NEXT_IP6_LOOKUP; 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); vlib_buffer_advance (p0, sizeof (ip4_mapt_pseudo_header_t)); //The pseudo-header is not used len0 = clib_net_to_host_u16 (((ip4_header_t *) vlib_buffer_get_current (p0))->length); d0 = pool_elt_at_index (map_main.domains, vnet_buffer (p0)->map_t.map_domain_index); _ip4_map_t_icmp (d0, p0, &error0); if (vnet_buffer (p0)->map_t.mtu < p0->current_length) { vnet_buffer (p0)->ip_frag.header_offset = 0; vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; vnet_buffer (p0)->ip_frag.next_index = IP6_FRAG_NEXT_IP6_LOOKUP; next0 = IP4_MAPT_ICMP_NEXT_IP6_FRAG; } if (PREDICT_TRUE (error0 == MAP_ERROR_NONE)) { vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX, cpu_index, vnet_buffer (p0)->map_t. map_domain_index, 1, len0); } else { next0 = IP4_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; } static uword ip4_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; 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; ip4_header_t *ip40; ip6_header_t *ip60; ip6_frag_hdr_t *frag0; ip4_mapt_pseudo_header_t *pheader0; ip4_mapt_fragmented_next_t next0; next0 = IP4_MAPT_FRAGMENTED_NEXT_IP6_LOOKUP; pi0 = to_next[0] = from[0]; from += 1; n_left_from -= 1; to_next += 1; n_left_to_next -= 1; p0 = vlib_get_buffer (vm, pi0); //Accessing pseudo header pheader0 = vlib_buffer_get_current (p0); vlib_buffer_advance (p0, sizeof (*pheader0)); //Accessing ip4 header ip40 = vlib_buffer_get_current (p0); frag0 = (ip6_frag_hdr_t *) u8_ptr_add (ip40, sizeof (*ip40) - sizeof (*frag0)); ip60 = (ip6_header_t *) u8_ptr_add (ip40, sizeof (*ip40) - sizeof (*frag0) - sizeof (*ip60)); vlib_buffer_advance (p0, sizeof (*ip40) - sizeof (*ip60) - sizeof (*frag0)); //We know that the protocol was one of ICMP, TCP or UDP //because the first fragment was found and cached frag0->next_hdr = (ip40->protocol == IP_PROTOCOL_ICMP) ? IP_PROTOCOL_ICMP6 : ip40->protocol; frag0->identification = frag_id_4to6 (ip40->fragment_id); frag0->rsv = 0; frag0->fragment_offset_and_more = ip6_frag_hdr_offset_and_more (ip4_get_fragment_offset (ip40), clib_net_to_host_u16 (ip40->flags_and_fragment_offset) & IP4_HEADER_FLAG_MORE_FRAGMENTS); ip60->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ((6 << 28) + (ip40->tos << 20)); ip60->payload_length = clib_host_to_net_u16 (clib_net_to_host_u16 (ip40->length) - sizeof (*ip40) + sizeof (*frag0)); ip60->hop_limit = ip40->ttl; ip60->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION; ip60->dst_address.as_u64[0] = pheader0->daddr.as_u64[0]; ip60->dst_address.as_u64[1] = pheader0->daddr.as_u64[1]; ip60->src_address.as_u64[0] = pheader0->saddr.as_u64[0]; ip60->src_address.as_u64[1] = pheader0->saddr.as_u64[1]; if (vnet_buffer (p0)->map_t.mtu < p0->current_length) { vnet_buffer (p0)->ip_frag.header_offset = 0; vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; vnet_buffer (p0)->ip_frag.next_index = IP6_FRAG_NEXT_IP6_LOOKUP; next0 = IP4_MAPT_FRAGMENTED_NEXT_IP6_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 ip4_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; 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); #ifdef IP4_MAP_T_DUAL_LOOP while (n_left_from >= 4 && n_left_to_next >= 2) { u32 pi0, pi1; vlib_buffer_t *p0, *p1; ip4_header_t *ip40, *ip41; ip6_header_t *ip60, *ip61; ip_csum_t csum0, csum1; u16 *checksum0, *checksum1; ip6_frag_hdr_t *frag0, *frag1; u32 frag_id0, frag_id1; ip4_mapt_pseudo_header_t *pheader0, *pheader1; ip4_mapt_tcp_udp_next_t next0, next1; pi0 = to_next[0] = from[0]; pi1 = to_next[1] = from[1]; from += 2; n_left_from -= 2; to_next += 2; n_left_to_next -= 2; next0 = IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP; next1 = IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP; p0 = vlib_get_buffer (vm, pi0); p1 = vlib_get_buffer (vm, pi1); //Accessing pseudo header pheader0 = vlib_buffer_get_current (p0); pheader1 = vlib_buffer_get_current (p1); vlib_buffer_advance (p0, sizeof (*pheader0)); vlib_buffer_advance (p1, sizeof (*pheader1)); //Accessing ip4 header ip40 = vlib_buffer_get_current (p0); ip41 = vlib_buffer_get_current (p1); checksum0 = (u16 *) u8_ptr_add (ip40, vnet_buffer (p0)->map_t.checksum_offset); checksum1 = (u16 *) u8_ptr_add (ip41, vnet_buffer (p1)->map_t.checksum_offset); //UDP checksum is optional over IPv4 but mandatory for IPv6 //We do not check udp->length sanity but use our safe computed value instead if (PREDICT_FALSE (!*checksum0 && ip40->protocol == IP_PROTOCOL_UDP)) { u16 udp_len = clib_host_to_net_u16 (ip40->length) - sizeof (*ip40); udp_header_t *udp = (udp_header_t *) u8_ptr_add (ip40, sizeof (*ip40)); ip_csum_t csum; csum = ip_incremental_checksum (0, udp, udp_len); csum = ip_csum_with_carry (csum, clib_host_to_net_u16 (udp_len)); csum = ip_csum_with_carry (csum, clib_host_to_net_u16 (IP_PROTOCOL_UDP)); csum = ip_csum_with_carry (csum, *((u64 *) (&ip40->src_address))); *checksum0 = ~ip_csum_fold (csum); } if (PREDICT_FALSE (!*checksum1 && ip41->protocol == IP_PROTOCOL_UDP)) { u16 udp_len = clib_host_to_net_u16 (ip41->length) - sizeof (*ip40); udp_header_t *udp = (udp_header_t *) u8_ptr_add (ip41, sizeof (*ip40)); ip_csum_t csum; csum = ip_incremental_checksum (0, udp, udp_len); csum = ip_csum_with_carry (csum, clib_host_to_net_u16 (udp_len)); csum = ip_csum_with_carry (csum, clib_host_to_net_u16 (IP_PROTOCOL_UDP)); csum = ip_csum_with_carry (csum, *((u64 *) (&ip41->src_address))); *checksum1 = ~ip_csum_fold (csum); } csum0 = ip_csum_sub_even (*checksum0, ip40->src_address.as_u32); csum1 = ip_csum_sub_even (*checksum1, ip41->src_address.as_u32); csum0 = ip_csum_sub_even (csum0, ip40->dst_address.as_u32); csum1 = ip_csum_sub_even (csum1, ip41->dst_address.as_u32); // Deal with fragmented packets if (PREDICT_FALSE (ip40->flags_and_fragment_offset & clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS))) { ip60 = (ip6_header_t *) u8_ptr_add (ip40, sizeof (*ip40) - sizeof (*ip60) - sizeof (*frag0)); frag0 = (ip6_frag_hdr_t *) u8_ptr_add (ip40, sizeof (*ip40) - sizeof (*frag0)); frag_id0 = frag_id_4to6 (ip40->fragment_id); vlib_buffer_advance (p0, sizeof (*ip40) - sizeof (*ip60) - sizeof (*frag0)); } else { ip60 = (ip6_header_t *) (((u8 *) ip40) + sizeof (*ip40) - sizeof (*ip60)); vlib_buffer_advance (p0, sizeof (*ip40) - sizeof (*ip60)); frag0 = NULL; } if (PREDICT_FALSE (ip41->flags_and_fragment_offset & clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS))) { ip61 = (ip6_header_t *) u8_ptr_add (ip41, sizeof (*ip40) - sizeof (*ip60) - sizeof (*frag0)); frag1 = (ip6_frag_hdr_t *) u8_ptr_add (ip41, sizeof (*ip40) - sizeof (*frag0)); frag_id1 = frag_id_4to6 (ip41->fragment_id); vlib_buffer_advance (p1, sizeof (*ip40) - sizeof (*ip60) - sizeof (*frag0)); } else { ip61 = (ip6_header_t *) (((u8 *) ip41) + sizeof (*ip40) - sizeof (*ip60)); vlib_buffer_advance (p1, sizeof (*ip40) - sizeof (*ip60)); frag1 = NULL; } ip60->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ((6 << 28) + (ip40->tos << 20)); ip61->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ((6 << 28) + (ip41->tos << 20)); ip60->payload_length = u16_net_add (ip40->length, -sizeof (*ip40)); ip61->payload_length = u16_net_add (ip41->length, -sizeof (*ip40)); ip60->hop_limit = ip40->ttl; ip61->hop_limit = ip41->ttl; ip60->protocol = ip40->protocol; ip61->protocol = ip41->protocol; if (PREDICT_FALSE (frag0 != NULL)) { frag0->next_hdr = ip60->protocol; frag0->identification = frag_id0; frag0->rsv = 0; frag0->fragment_offset_and_more = ip6_frag_hdr_offset_and_more (0, 1); ip60->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION; ip60->payload_length = u16_net_add (ip60->payload_length, sizeof (*frag0)); } if (PREDICT_FALSE (frag1 != NULL)) { frag1->next_hdr = ip61->protocol; frag1->identification = frag_id1; frag1->rsv = 0; frag1->fragment_offset_and_more = ip6_frag_hdr_offset_and_more (0, 1); ip61->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION; ip61->payload_length = u16_net_add (ip61->payload_length, sizeof (*frag0)); } //Finally copying the address ip60->dst_address.as_u64[0] = pheader0->daddr.as_u64[0]; ip61->dst_address.as_u64[0] = pheader1->daddr.as_u64[0]; ip60->dst_address.as_u64[1] = pheader0->daddr.as_u64[1]; ip61->dst_address.as_u64[1] = pheader1->daddr.as_u64[1]; ip60->src_address.as_u64[0] = pheader0->saddr.as_u64[0]; ip61->src_address.as_u64[0] = pheader1->saddr.as_u64[0]; ip60->src_address.as_u64[1] = pheader0->saddr.as_u64[1]; ip61->src_address.as_u64[1] = pheader1->saddr.as_u64[1]; csum0 = ip_csum_add_even (csum0, ip60->src_address.as_u64[0]); csum1 = ip_csum_add_even (csum1, ip61->src_address.as_u64[0]); csum0 = ip_csum_add_even (csum0, ip60->src_address.as_u64[1]); csum1 = ip_csum_add_even (csum1, ip61->src_address.as_u64[1]); csum0 = ip_csum_add_even (csum0, ip60->dst_address.as_u64[0]); csum1 = ip_csum_add_even (csum1, ip61->dst_address.as_u64[0]); csum0 = ip_csum_add_even (csum0, ip60->dst_address.as_u64[1]); csum1 = ip_csum_add_even (csum1, ip61->dst_address.as_u64[1]); *checksum0 = ip_csum_fold (csum0); *checksum1 = ip_csum_fold (csum1); if (vnet_buffer (p0)->map_t.mtu < p0->current_length) { vnet_buffer (p0)->ip_frag.header_offset = 0; vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; vnet_buffer (p0)->ip_frag.next_index = IP6_FRAG_NEXT_IP6_LOOKUP; next0 = IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG; } if (vnet_buffer (p1)->map_t.mtu < p1->current_length) { vnet_buffer (p1)->ip_frag.header_offset = 0; vnet_buffer (p1)->ip_frag.mtu = vnet_buffer (p1)->map_t.mtu; vnet_buffer (p1)->ip_frag.next_index = IP6_FRAG_NEXT_IP6_LOOKUP; next1 = IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG; } vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, pi0, pi1, next0, next1); } #endif while (n_left_from > 0 && n_left_to_next > 0) { u32 pi0; vlib_buffer_t *p0; ip4_header_t *ip40; ip6_header_t *ip60; ip_csum_t csum0; u16 *checksum0; ip6_frag_hdr_t *frag0; u32 frag_id0; ip4_mapt_pseudo_header_t *pheader0; ip4_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 = IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP; p0 = vlib_get_buffer (vm, pi0); //Accessing pseudo header pheader0 = vlib_buffer_get_current (p0); vlib_buffer_advance (p0, sizeof (*pheader0)); //Accessing ip4 header ip40 = vlib_buffer_get_current (p0); checksum0 = (u16 *) u8_ptr_add (ip40, vnet_buffer (p0)->map_t.checksum_offset); //UDP checksum is optional over IPv4 but mandatory for IPv6 //We do not check udp->length sanity but use our safe computed value instead if (PREDICT_FALSE (!*checksum0 && ip40->protocol == IP_PROTOCOL_UDP)) { u16 udp_len = clib_host_to_net_u16 (ip40->length) - sizeof (*ip40); udp_header_t *udp = (udp_header_t *) u8_ptr_add (ip40, sizeof (*ip40)); ip_csum_t csum; csum = ip_incremental_checksum (0, udp, udp_len); csum = ip_csum_with_carry (csum, clib_host_to_net_u16 (udp_len)); csum = ip_csum_with_carry (csum, clib_host_to_net_u16 (IP_PROTOCOL_UDP)); csum = ip_csum_with_carry (csum, *((u64 *) (&ip40->src_address))); *checksum0 = ~ip_csum_fold (csum); } csum0 = ip_csum_sub_even (*checksum0, ip40->src_address.as_u32); csum0 = ip_csum_sub_even (csum0, ip40->dst_address.as_u32); // Deal with fragmented packets if (PREDICT_FALSE (ip40->flags_and_fragment_offset & clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS))) { ip60 = (ip6_header_t *) u8_ptr_add (ip40, sizeof (*ip40) - sizeof (*ip60) - sizeof (*frag0)); frag0 = (ip6_frag_hdr_t *) u8_ptr_add (ip40, sizeof (*ip40) - sizeof (*frag0)); frag_id0 = frag_id_4to6 (ip40->fragment_id); vlib_buffer_advance (p0, sizeof (*ip40) - sizeof (*ip60) - sizeof (*frag0)); } else { ip60 = (ip6_header_t *) (((u8 *) ip40) + sizeof (*ip40) - sizeof (*ip60)); vlib_buffer_advance (p0, sizeof (*ip40) - sizeof (*ip60)); frag0 = NULL; } ip60->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ((6 << 28) + (ip40->tos << 20)); ip60->payload_length = u16_net_add (ip40->length, -sizeof (*ip40)); ip60->hop_limit = ip40->ttl; ip60->protocol = ip40->protocol; if (PREDICT_FALSE (frag0 != NULL)) { frag0->next_hdr = ip60->protocol; frag0->identification = frag_id0; frag0->rsv = 0; frag0->fragment_offset_and_more = ip6_frag_hdr_offset_and_more (0, 1); ip60->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION; ip60->payload_length = u16_net_add (ip60->payload_length, sizeof (*frag0)); } //Finally copying the address ip60->dst_address.as_u64[0] = pheader0->daddr.as_u64[0]; ip60->dst_address.as_u64[1] = pheader0->daddr.as_u64[1]; ip60->src_address.as_u64[0] = pheader0->saddr.as_u64[0]; ip60->src_address.as_u64[1] = pheader0->saddr.as_u64[1]; csum0 = ip_csum_add_even (csum0, ip60->src_address.as_u64[0]); csum0 = ip_csum_add_even (csum0, ip60->src_address.as_u64[1]); csum0 = ip_csum_add_even (csum0, ip60->dst_address.as_u64[0]); csum0 = ip_csum_add_even (csum0, ip60->dst_address.as_u64[1]); *checksum0 = ip_csum_fold (csum0); if (vnet_buffer (p0)->map_t.mtu < p0->current_length) { //Send to fragmentation node if necessary vnet_buffer (p0)->ip_frag.header_offset = 0; vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; vnet_buffer (p0)->ip_frag.next_index = IP6_FRAG_NEXT_IP6_LOOKUP; next0 = IP4_MAPT_TCP_UDP_NEXT_IP6_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_always_inline void ip4_map_t_classify (vlib_buffer_t * p0, map_domain_t * d0, ip4_header_t * ip40, u16 ip4_len0, i32 * dst_port0, u8 * error0, ip4_mapt_next_t * next0) { if (PREDICT_FALSE (ip4_get_fragment_offset (ip40))) { *next0 = IP4_MAPT_NEXT_MAPT_FRAGMENTED; if (d0->ea_bits_len == 0 && d0->rules) { *dst_port0 = 0; } else { *dst_port0 = ip4_map_fragment_get_port (ip40); *error0 = (*dst_port0 == -1) ? MAP_ERROR_FRAGMENT_MEMORY : *error0; } } else if (PREDICT_TRUE (ip40->protocol == IP_PROTOCOL_TCP)) { vnet_buffer (p0)->map_t.checksum_offset = 36; *next0 = IP4_MAPT_NEXT_MAPT_TCP_UDP; *error0 = ip4_len0 < 40 ? MAP_ERROR_MALFORMED : *error0; *dst_port0 = (i32) * ((u16 *) u8_ptr_add (ip40, sizeof (*ip40) + 2)); } else if (PREDICT_TRUE (ip40->protocol == IP_PROTOCOL_UDP)) { vnet_buffer (p0)->map_t.checksum_offset = 26; *next0 = IP4_MAPT_NEXT_MAPT_TCP_UDP; *error0 = ip4_len0 < 28 ? MAP_ERROR_MALFORMED : *error0; *dst_port0 = (i32) * ((u16 *) u8_ptr_add (ip40, sizeof (*ip40) + 2)); } else if (ip40->protocol == IP_PROTOCOL_ICMP) { *next0 = IP4_MAPT_NEXT_MAPT_ICMP; if (d0->ea_bits_len == 0 && d0->rules) *dst_port0 = 0; else if (((icmp46_header_t *) u8_ptr_add (ip40, sizeof (*ip40)))->code == ICMP4_echo_reply || ((icmp46_header_t *) u8_ptr_add (ip40, sizeof (*ip40)))->code == ICMP4_echo_request) *dst_port0 = (i32) * ((u16 *) u8_ptr_add (ip40, sizeof (*ip40) + 6)); } else { *error0 = MAP_ERROR_BAD_PROTOCOL; } } static uword ip4_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, ip4_map_t_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 cpu_index = os_get_cpu_number (); while (n_left_from > 0) { vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); #ifdef IP4_MAP_T_DUAL_LOOP while (n_left_from >= 4 && n_left_to_next >= 2) { u32 pi0, pi1; vlib_buffer_t *p0, *p1; ip4_header_t *ip40, *ip41; map_domain_t *d0, *d1; ip4_mapt_next_t next0 = 0, next1 = 0; u16 ip4_len0, ip4_len1; u8 error0, error1; i32 dst_port0, dst_port1; ip4_mapt_pseudo_header_t *pheader0, *pheader1; pi0 = to_next[0] = from[0]; pi1 = to_next[1] = from[1]; from += 2; n_left_from -= 2; to_next += 2; n_left_to_next -= 2; error0 = MAP_ERROR_NONE; error1 = MAP_ERROR_NONE; p0 = vlib_get_buffer (vm, pi0); p1 = vlib_get_buffer (vm, pi1); ip40 = vlib_buffer_get_current (p0); ip41 = vlib_buffer_get_current (p1); ip4_len0 = clib_host_to_net_u16 (ip40->length); ip4_len1 = clib_host_to_net_u16 (ip41->length); if (PREDICT_FALSE (p0->current_length < ip4_len0 || ip40->ip_version_and_header_length != 0x45)) { error0 = MAP_ERROR_UNKNOWN; next0 = IP4_MAPT_NEXT_DROP; } if (PREDICT_FALSE (p1->current_length < ip4_len1 || ip41->ip_version_and_header_length != 0x45)) { error1 = MAP_ERROR_UNKNOWN; next1 = IP4_MAPT_NEXT_DROP; } d0 = ip4_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX], &vnet_buffer (p0)->map_t.map_domain_index); d1 = ip4_map_get_domain (vnet_buffer (p1)->ip.adj_index[VLIB_TX], &vnet_buffer (p1)->map_t.map_domain_index); vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0; vnet_buffer (p1)->map_t.mtu = d1->mtu ? d1->mtu : ~0; dst_port0 = -1; dst_port1 = -1; ip4_map_t_classify (p0, d0, ip40, ip4_len0, &dst_port0, &error0, &next0); ip4_map_t_classify (p1, d1, ip41, ip4_len1, &dst_port1, &error1, &next1); //Add MAP-T pseudo header in front of the packet vlib_buffer_advance (p0, -sizeof (*pheader0)); vlib_buffer_advance (p1, -sizeof (*pheader1)); pheader0 = vlib_buffer_get_current (p0); pheader1 = vlib_buffer_get_current (p1); //Save addresses within the packet ip4_map_t_embedded_address (d0, &pheader0->saddr, &ip40->src_address); ip4_map_t_embedded_address (d1, &pheader1->saddr, &ip41->src_address); pheader0->daddr.as_u64[0] = map_get_pfx_net (d0, ip40->dst_address.as_u32, (u16) dst_port0); pheader0->daddr.as_u64[1] = map_get_sfx_net (d0, ip40->dst_address.as_u32, (u16) dst_port0); pheader1->daddr.as_u64[0] = map_get_pfx_net (d1, ip41->dst_address.as_u32, (u16) dst_port1); pheader1->daddr.as_u64[1] = map_get_sfx_net (d1, ip41->dst_address.as_u32, (u16) dst_port1); if (PREDICT_FALSE (ip4_is_first_fragment (ip40) && (dst_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules) && ip4_map_fragment_cache (ip40, dst_port0))) { error0 = MAP_ERROR_FRAGMENT_MEMORY; } if (PREDICT_FALSE (ip4_is_first_fragment (ip41) && (dst_port1 != -1) && (d1->ea_bits_len != 0 || !d1->rules) && ip4_map_fragment_cache (ip41, dst_port1))) { error1 = MAP_ERROR_FRAGMENT_MEMORY; } if (PREDICT_TRUE (error0 == MAP_ERROR_NONE && next0 != IP4_MAPT_NEXT_MAPT_ICMP)) { vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX, cpu_index, vnet_buffer (p0)->map_t. map_domain_index, 1, clib_net_to_host_u16 (ip40-> length)); } if (PREDICT_TRUE (error1 == MAP_ERROR_NONE && next1 != IP4_MAPT_NEXT_MAPT_ICMP)) { vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX, cpu_index, vnet_buffer (p1)->map_t. map_domain_index, 1, clib_net_to_host_u16 (ip41-> length)); } next0 = (error0 != MAP_ERROR_NONE) ? IP4_MAPT_NEXT_DROP : next0; next1 = (error1 != MAP_ERROR_NONE) ? IP4_MAPT_NEXT_DROP : next1; p0->error = error_node->errors[error0]; p1->error = error_node->errors[error1]; vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, pi0, pi1, next0, next1); } #endif while (n_left_from > 0 && n_left_to_next > 0) { u32 pi0; vlib_buffer_t *p0; ip4_header_t *ip40; map_domain_t *d0; ip4_mapt_next_t next0; u16 ip4_len0; u8 error0; i32 dst_port0; ip4_mapt_pseudo_header_t *pheader0; 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); ip40 = vlib_buffer_get_current (p0); ip4_len0 = clib_host_to_net_u16 (ip40->length); if (PREDICT_FALSE (p0->current_length < ip4_len0 || ip40->ip_version_and_header_length != 0x45)) { error0 = MAP_ERROR_UNKNOWN; next0 = IP4_MAPT_NEXT_DROP; } d0 = ip4_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX], &vnet_buffer (p0)->map_t.map_domain_index); vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0; dst_port0 = -1; ip4_map_t_classify (p0, d0, ip40, ip4_len0, &dst_port0, &error0, &next0); //Add MAP-T pseudo header in front of the packet vlib_buffer_advance (p0, -sizeof (*pheader0)); pheader0 = vlib_buffer_get_current (p0); //Save addresses within the packet ip4_map_t_embedded_address (d0, &pheader0->saddr, &ip40->src_address); pheader0->daddr.as_u64[0] = map_get_pfx_net (d0, ip40->dst_address.as_u32, (u16) dst_port0); pheader0->daddr.as_u64[1] = map_get_sfx_net (d0, ip40->dst_address.as_u32, (u16) dst_port0); //It is important to cache at this stage because the result might be necessary //for packets within the same vector. //Actually, this approach even provides some limited out-of-order fragments support if (PREDICT_FALSE (ip4_is_first_fragment (ip40) && (dst_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules) && ip4_map_fragment_cache (ip40, dst_port0))) { error0 = MAP_ERROR_UNKNOWN; } if (PREDICT_TRUE (error0 == MAP_ERROR_NONE && next0 != IP4_MAPT_NEXT_MAPT_ICMP)) { vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX, cpu_index, vnet_buffer (p0)->map_t. map_domain_index, 1, clib_net_to_host_u16 (ip40-> length)); } next0 = (error0 != MAP_ERROR_NONE) ? IP4_MAPT_NEXT_DROP : next0; 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; } static char *map_t_error_strings[] = { #define _(sym,string) string, foreach_map_error #undef _ }; /* *INDENT-OFF* */ VLIB_REGISTER_NODE(ip4_map_t_fragmented_node) = { .function = ip4_map_t_fragmented, .name = "ip4-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 = IP4_MAPT_FRAGMENTED_N_NEXT, .next_nodes = { [IP4_MAPT_FRAGMENTED_NEXT_IP6_LOOKUP] = "ip6-lookup", [IP4_MAPT_FRAGMENTED_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME, [IP4_MAPT_FRAGMENTED_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ /* *INDENT-OFF* */ VLIB_REGISTER_NODE(ip4_map_t_icmp_node) = { .function = ip4_map_t_icmp, .name = "ip4-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 = IP4_MAPT_ICMP_N_NEXT, .next_nodes = { [IP4_MAPT_ICMP_NEXT_IP6_LOOKUP] = "ip6-lookup", [IP4_MAPT_ICMP_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME, [IP4_MAPT_ICMP_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ /* *INDENT-OFF* */ VLIB_REGISTER_NODE(ip4_map_t_tcp_udp_node) = { .function = ip4_map_t_tcp_udp, .name = "ip4-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 = IP4_MAPT_TCP_UDP_N_NEXT, .next_nodes = { [IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP] = "ip6-lookup", [IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME, [IP4_MAPT_TCP_UDP_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ /* *INDENT-OFF* */ VLIB_REGISTER_NODE(ip4_map_t_node) = { .function = ip4_map_t, .name = "ip4-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 = IP4_MAPT_N_NEXT, .next_nodes = { [IP4_MAPT_NEXT_MAPT_TCP_UDP] = "ip4-map-t-tcp-udp", [IP4_MAPT_NEXT_MAPT_ICMP] = "ip4-map-t-icmp", [IP4_MAPT_NEXT_MAPT_FRAGMENTED] = "ip4-map-t-fragmented", [IP4_MAPT_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */