diff options
Diffstat (limited to 'src/plugins/nat/nat66_out2in.c')
| -rw-r--r-- | src/plugins/nat/nat66_out2in.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/src/plugins/nat/nat66_out2in.c b/src/plugins/nat/nat66_out2in.c deleted file mode 100644 index 8386cd3ca73..00000000000 --- a/src/plugins/nat/nat66_out2in.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * Copyright (c) 2018 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. - */ -/** - * @file - * @brief NAT66 outside to inside network translation - */ - -#include <nat/nat66.h> -#include <vnet/ip/ip6_to_ip4.h> -#include <vnet/fib/fib_table.h> - -typedef struct -{ - u32 sw_if_index; - u32 next_index; -} nat66_out2in_trace_t; - -static u8 * -format_nat66_out2in_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - nat66_out2in_trace_t *t = va_arg (*args, nat66_out2in_trace_t *); - - s = - format (s, "NAT66-out2in: sw_if_index %d, next index %d", t->sw_if_index, - t->next_index); - - return s; -} - -#define foreach_nat66_out2in_error \ -_(OUT2IN_PACKETS, "good out2in packets processed") \ -_(NO_TRANSLATION, "no translation") \ -_(UNKNOWN, "unknown") - -typedef enum -{ -#define _(sym,str) NAT66_OUT2IN_ERROR_##sym, - foreach_nat66_out2in_error -#undef _ - NAT66_OUT2IN_N_ERROR, -} nat66_out2in_error_t; - -static char *nat66_out2in_error_strings[] = { -#define _(sym,string) string, - foreach_nat66_out2in_error -#undef _ -}; - -typedef enum -{ - NAT66_OUT2IN_NEXT_IP6_LOOKUP, - NAT66_OUT2IN_NEXT_DROP, - NAT66_OUT2IN_N_NEXT, -} nat66_out2in_next_t; - -VLIB_NODE_FN (nat66_out2in_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - nat66_out2in_next_t next_index; - u32 pkts_processed = 0; - u32 thread_index = vm->thread_index; - nat66_main_t *nm = &nat66_main; - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - u32 n_left_to_next; - - 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 bi0; - vlib_buffer_t *b0; - u32 next0 = NAT66_OUT2IN_NEXT_IP6_LOOKUP; - ip6_header_t *ip60; - u16 l4_offset0, frag_offset0; - u8 l4_protocol0; - nat66_static_mapping_t *sm0; - u32 sw_if_index0, fib_index0; - udp_header_t *udp0; - tcp_header_t *tcp0; - icmp46_header_t *icmp0; - u16 *checksum0 = 0; - ip_csum_t csum0; - - /* speculatively enqueue b0 to the current next frame */ - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - ip60 = vlib_buffer_get_current (b0); - - if (PREDICT_FALSE - (ip6_parse - (vm, b0, ip60, b0->current_length, &l4_protocol0, &l4_offset0, - &frag_offset0))) - { - next0 = NAT66_OUT2IN_NEXT_DROP; - b0->error = node->errors[NAT66_OUT2IN_ERROR_UNKNOWN]; - goto trace0; - } - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - fib_index0 = - fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP6, - sw_if_index0); - - sm0 = nat66_static_mapping_get (&ip60->dst_address, fib_index0, 0); - if (PREDICT_FALSE (!sm0)) - { - goto trace0; - } - - if (l4_protocol0 == IP_PROTOCOL_UDP) - { - udp0 = (udp_header_t *) u8_ptr_add (ip60, l4_offset0); - checksum0 = &udp0->checksum; - } - else if (l4_protocol0 == IP_PROTOCOL_TCP) - { - tcp0 = (tcp_header_t *) u8_ptr_add (ip60, l4_offset0); - checksum0 = &tcp0->checksum; - } - else if (l4_protocol0 == IP_PROTOCOL_ICMP6) - { - icmp0 = (icmp46_header_t *) u8_ptr_add (ip60, l4_offset0); - checksum0 = &icmp0->checksum; - } - else - goto skip_csum0; - - csum0 = ip_csum_sub_even (*checksum0, ip60->dst_address.as_u64[0]); - csum0 = ip_csum_sub_even (csum0, ip60->dst_address.as_u64[1]); - csum0 = ip_csum_add_even (csum0, sm0->l_addr.as_u64[0]); - csum0 = ip_csum_add_even (csum0, sm0->l_addr.as_u64[1]); - *checksum0 = ip_csum_fold (csum0); - - skip_csum0: - ip60->dst_address.as_u64[0] = sm0->l_addr.as_u64[0]; - ip60->dst_address.as_u64[1] = sm0->l_addr.as_u64[1]; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = sm0->fib_index; - - vlib_increment_combined_counter (&nm->session_counters, - thread_index, sm0 - nm->sm, 1, - vlib_buffer_length_in_chain (vm, - b0)); - - trace0: - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - nat66_out2in_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - t->next_index = next0; - } - - pkts_processed += next0 != NAT66_OUT2IN_NEXT_DROP; - - /* verify speculative enqueue, maybe switch current next frame */ - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, bi0, next0); - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - vlib_node_increment_counter (vm, nm->out2in_node_index, - NAT66_OUT2IN_ERROR_OUT2IN_PACKETS, - pkts_processed); - return frame->n_vectors; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (nat66_out2in_node) = { - .name = "nat66-out2in", - .vector_size = sizeof (u32), - .format_trace = format_nat66_out2in_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN (nat66_out2in_error_strings), - .error_strings = nat66_out2in_error_strings, - .n_next_nodes = NAT66_OUT2IN_N_NEXT, - /* edit / add dispositions here */ - .next_nodes = { - [NAT66_OUT2IN_NEXT_DROP] = "error-drop", - [NAT66_OUT2IN_NEXT_IP6_LOOKUP] = "ip6-lookup", - }, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |