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-rw-r--r--src/plugins/nat/nat44_classify.c506
1 files changed, 0 insertions, 506 deletions
diff --git a/src/plugins/nat/nat44_classify.c b/src/plugins/nat/nat44_classify.c
deleted file mode 100644
index 85f8c64afd5..00000000000
--- a/src/plugins/nat/nat44_classify.c
+++ /dev/null
@@ -1,506 +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 Classify for one armed NAT44 (in+out interface)
- */
-
-#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vnet/fib/ip4_fib.h>
-#include <nat/nat.h>
-#include <nat/nat_inlines.h>
-#include <nat/nat44/ed_inlines.h>
-
-#define foreach_nat44_classify_error \
-_(NEXT_IN2OUT, "next in2out") \
-_(NEXT_OUT2IN, "next out2in") \
-_(FRAG_CACHED, "fragment cached")
-
-typedef enum
-{
-#define _(sym,str) NAT44_CLASSIFY_ERROR_##sym,
- foreach_nat44_classify_error
-#undef _
- NAT44_CLASSIFY_N_ERROR,
-} nat44_classify_error_t;
-
-static char *nat44_classify_error_strings[] = {
-#define _(sym,string) string,
- foreach_nat44_classify_error
-#undef _
-};
-
-typedef enum
-{
- NAT44_CLASSIFY_NEXT_IN2OUT,
- NAT44_CLASSIFY_NEXT_OUT2IN,
- NAT44_CLASSIFY_NEXT_DROP,
- NAT44_CLASSIFY_N_NEXT,
-} nat44_classify_next_t;
-
-typedef struct
-{
- u8 next_in2out;
- u8 cached;
-} nat44_classify_trace_t;
-
-static u8 *
-format_nat44_classify_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 *);
- nat44_classify_trace_t *t = va_arg (*args, nat44_classify_trace_t *);
- char *next;
-
- if (t->cached)
- s = format (s, "nat44-classify: fragment cached");
- else
- {
- next = t->next_in2out ? "nat44-in2out" : "nat44-out2in";
- s = format (s, "nat44-classify: next %s", next);
- }
-
- return s;
-}
-
-static inline uword
-nat44_classify_node_fn_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- u32 n_left_from, *from, *to_next;
- nat44_classify_next_t next_index;
- snat_main_t *sm = &snat_main;
- snat_static_mapping_t *m;
- u32 next_in2out = 0, next_out2in = 0;
-
- 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 = NAT44_CLASSIFY_NEXT_IN2OUT;
- ip4_header_t *ip0;
- snat_address_t *ap;
- clib_bihash_kv_8_8_t kv0, value0;
-
- /* 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);
- ip0 = vlib_buffer_get_current (b0);
-
- /* *INDENT-OFF* */
- vec_foreach (ap, sm->addresses)
- {
- if (ip0->dst_address.as_u32 == ap->addr.as_u32)
- {
- next0 = NAT44_CLASSIFY_NEXT_OUT2IN;
- goto enqueue0;
- }
- }
- /* *INDENT-ON* */
-
- if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
- {
- init_nat_k (&kv0, ip0->dst_address, 0, 0, 0);
- /* try to classify the fragment based on IP header alone */
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external,
- &kv0, &value0))
- {
- m = pool_elt_at_index (sm->static_mappings, value0.value);
- if (m->local_addr.as_u32 != m->external_addr.as_u32)
- next0 = NAT44_CLASSIFY_NEXT_OUT2IN;
- goto enqueue0;
- }
- init_nat_k (&kv0, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, 0,
- ip_proto_to_nat_proto (ip0->protocol));
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv0, &value0))
- {
- m = pool_elt_at_index (sm->static_mappings, value0.value);
- if (m->local_addr.as_u32 != m->external_addr.as_u32)
- next0 = NAT44_CLASSIFY_NEXT_OUT2IN;
- }
- }
-
- enqueue0:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- nat44_classify_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->cached = 0;
- t->next_in2out = next0 == NAT44_CLASSIFY_NEXT_IN2OUT ? 1 : 0;
- }
-
- next_in2out += next0 == NAT44_CLASSIFY_NEXT_IN2OUT;
- next_out2in += next0 == NAT44_CLASSIFY_NEXT_OUT2IN;
-
- /* 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, node->node_index,
- NAT44_CLASSIFY_ERROR_NEXT_IN2OUT, next_in2out);
- vlib_node_increment_counter (vm, node->node_index,
- NAT44_CLASSIFY_ERROR_NEXT_OUT2IN, next_out2in);
- return frame->n_vectors;
-}
-
-static inline uword
-nat44_handoff_classify_node_fn_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- u32 n_left_from, *from, *to_next;
- nat44_classify_next_t next_index;
- snat_main_t *sm = &snat_main;
- snat_static_mapping_t *m;
- u32 next_in2out = 0, next_out2in = 0;
-
- 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 = NAT_NEXT_IN2OUT_CLASSIFY;
- ip4_header_t *ip0;
- snat_address_t *ap;
- clib_bihash_kv_8_8_t kv0, value0;
-
- /* 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);
- ip0 = vlib_buffer_get_current (b0);
-
- /* *INDENT-OFF* */
- vec_foreach (ap, sm->addresses)
- {
- if (ip0->dst_address.as_u32 == ap->addr.as_u32)
- {
- next0 = NAT_NEXT_OUT2IN_CLASSIFY;
- goto enqueue0;
- }
- }
- /* *INDENT-ON* */
-
- if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
- {
- init_nat_k (&kv0, ip0->dst_address, 0, 0, 0);
- /* try to classify the fragment based on IP header alone */
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external,
- &kv0, &value0))
- {
- m = pool_elt_at_index (sm->static_mappings, value0.value);
- if (m->local_addr.as_u32 != m->external_addr.as_u32)
- next0 = NAT_NEXT_OUT2IN_CLASSIFY;
- goto enqueue0;
- }
- init_nat_k (&kv0, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, 0,
- ip_proto_to_nat_proto (ip0->protocol));
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv0, &value0))
- {
- m = pool_elt_at_index (sm->static_mappings, value0.value);
- if (m->local_addr.as_u32 != m->external_addr.as_u32)
- next0 = NAT_NEXT_OUT2IN_CLASSIFY;
- }
- }
-
- enqueue0:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- nat44_classify_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->cached = 0;
- t->next_in2out = next0 == NAT_NEXT_IN2OUT_CLASSIFY ? 1 : 0;
- }
-
- next_in2out += next0 == NAT_NEXT_IN2OUT_CLASSIFY;
- next_out2in += next0 == NAT_NEXT_OUT2IN_CLASSIFY;
-
- /* 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, node->node_index,
- NAT44_CLASSIFY_ERROR_NEXT_IN2OUT, next_in2out);
- vlib_node_increment_counter (vm, node->node_index,
- NAT44_CLASSIFY_ERROR_NEXT_OUT2IN, next_out2in);
- return frame->n_vectors;
-}
-
-static inline uword
-nat44_ed_classify_node_fn_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- u32 n_left_from, *from, *to_next;
- nat44_classify_next_t next_index;
- snat_main_t *sm = &snat_main;
- snat_static_mapping_t *m;
- u32 next_in2out = 0, next_out2in = 0;
-
- 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 = NAT_NEXT_IN2OUT_ED_FAST_PATH;
- u32 sw_if_index0, rx_fib_index0;
- ip4_header_t *ip0;
- snat_address_t *ap;
- clib_bihash_kv_8_8_t kv0, value0;
- clib_bihash_kv_16_8_t ed_kv0, ed_value0;
-
- /* 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);
- ip0 = vlib_buffer_get_current (b0);
-
- u32 arc_next;
- vnet_feature_next (&arc_next, b0);
- vnet_buffer2 (b0)->nat.arc_next = arc_next;
-
- if (ip0->protocol != IP_PROTOCOL_ICMP)
- {
- /* process leading fragment/whole packet (with L4 header) */
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- rx_fib_index0 =
- fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
- sw_if_index0);
- init_ed_k (&ed_kv0, ip0->src_address,
- vnet_buffer (b0)->ip.reass.l4_src_port,
- ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port,
- rx_fib_index0, ip0->protocol);
- /* process whole packet */
- if (!clib_bihash_search_16_8 (&sm->flow_hash, &ed_kv0,
- &ed_value0))
- {
- ASSERT (vm->thread_index ==
- ed_value_get_thread_index (&ed_value0));
- snat_main_per_thread_data_t *tsm =
- &sm->per_thread_data[vm->thread_index];
- snat_session_t *s = pool_elt_at_index (
- tsm->sessions, ed_value_get_session_index (&ed_value0));
- clib_bihash_kv_16_8_t i2o_kv;
- nat_6t_flow_to_ed_k (&i2o_kv, &s->i2o);
- vnet_buffer2 (b0)->nat.cached_session_index =
- ed_value_get_session_index (&ed_value0);
- if (i2o_kv.key[0] == ed_kv0.key[0] &&
- i2o_kv.key[1] == ed_kv0.key[1])
- {
- next0 = NAT_NEXT_IN2OUT_ED_FAST_PATH;
- }
- else
- {
- next0 = NAT_NEXT_OUT2IN_ED_FAST_PATH;
- }
-
- goto enqueue0;
- }
- /* session doesn't exist so continue in code */
- }
-
- /* *INDENT-OFF* */
- vec_foreach (ap, sm->addresses)
- {
- if (ip0->dst_address.as_u32 == ap->addr.as_u32)
- {
- next0 = NAT_NEXT_OUT2IN_ED_FAST_PATH;
- goto enqueue0;
- }
- }
- /* *INDENT-ON* */
-
- if (PREDICT_FALSE (pool_elts (sm->static_mappings)))
- {
- init_nat_k (&kv0, ip0->dst_address, 0, 0, 0);
- /* try to classify the fragment based on IP header alone */
- if (!clib_bihash_search_8_8 (&sm->static_mapping_by_external,
- &kv0, &value0))
- {
- m = pool_elt_at_index (sm->static_mappings, value0.value);
- if (m->local_addr.as_u32 != m->external_addr.as_u32)
- next0 = NAT_NEXT_OUT2IN_ED_FAST_PATH;
- goto enqueue0;
- }
- init_nat_k (&kv0, ip0->dst_address,
- vnet_buffer (b0)->ip.reass.l4_dst_port, 0,
- ip_proto_to_nat_proto (ip0->protocol));
- if (!clib_bihash_search_8_8
- (&sm->static_mapping_by_external, &kv0, &value0))
- {
- m = pool_elt_at_index (sm->static_mappings, value0.value);
- if (m->local_addr.as_u32 != m->external_addr.as_u32)
- next0 = NAT_NEXT_OUT2IN_ED_FAST_PATH;
- }
- }
-
- enqueue0:
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- nat44_classify_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->cached = 0;
- t->next_in2out = next0 == NAT_NEXT_IN2OUT_ED_FAST_PATH ? 1 : 0;
- }
-
- next_in2out += next0 == NAT_NEXT_IN2OUT_ED_FAST_PATH;
- next_out2in += next0 == NAT_NEXT_OUT2IN_ED_FAST_PATH;
-
- /* 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, node->node_index,
- NAT44_CLASSIFY_ERROR_NEXT_IN2OUT, next_in2out);
- vlib_node_increment_counter (vm, node->node_index,
- NAT44_CLASSIFY_ERROR_NEXT_OUT2IN, next_out2in);
- return frame->n_vectors;
-}
-
-VLIB_NODE_FN (nat44_classify_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return nat44_classify_node_fn_inline (vm, node, frame);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_classify_node) = {
- .name = "nat44-classify",
- .vector_size = sizeof (u32),
- .format_trace = format_nat44_classify_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(nat44_classify_error_strings),
- .error_strings = nat44_classify_error_strings,
- .n_next_nodes = NAT44_CLASSIFY_N_NEXT,
- .next_nodes = {
- [NAT44_CLASSIFY_NEXT_IN2OUT] = "nat44-in2out",
- [NAT44_CLASSIFY_NEXT_OUT2IN] = "nat44-out2in",
- [NAT44_CLASSIFY_NEXT_DROP] = "error-drop",
- },
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FN (nat44_ed_classify_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return nat44_ed_classify_node_fn_inline (vm, node, frame);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_ed_classify_node) = {
- .name = "nat44-ed-classify",
- .vector_size = sizeof (u32),
- .sibling_of = "nat-default",
- .format_trace = format_nat44_classify_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FN (nat44_handoff_classify_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return nat44_handoff_classify_node_fn_inline (vm, node, frame);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat44_handoff_classify_node) = {
- .name = "nat44-handoff-classify",
- .vector_size = sizeof (u32),
- .sibling_of = "nat-default",
- .format_trace = format_nat44_classify_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-};
-
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */