diff options
Diffstat (limited to 'src/vnet/lawful-intercept/node.c')
| -rw-r--r-- | src/vnet/lawful-intercept/node.c | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/src/vnet/lawful-intercept/node.c b/src/vnet/lawful-intercept/node.c deleted file mode 100644 index 86f135b9ea1..00000000000 --- a/src/vnet/lawful-intercept/node.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * 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 <vlib/vlib.h> -#include <vnet/vnet.h> -#include <vppinfra/error.h> - -#include <vnet/lawful-intercept/lawful_intercept.h> - -#include <vppinfra/error.h> -#include <vppinfra/elog.h> - -extern vlib_node_registration_t li_hit_node; - -typedef struct -{ - u32 next_index; -} li_hit_trace_t; - -/* packet trace format function */ -static u8 * -format_li_hit_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 *); - li_hit_trace_t *t = va_arg (*args, li_hit_trace_t *); - - s = format (s, "LI_HIT: next index %d", t->next_index); - - return s; -} - -#define foreach_li_hit_error \ -_(HITS, "LI packets processed") \ -_(NO_COLLECTOR, "No collector configured") \ -_(BUFFER_ALLOCATION_FAILURE, "Buffer allocation failure") - -typedef enum -{ -#define _(sym,str) LI_HIT_ERROR_##sym, - foreach_li_hit_error -#undef _ - LI_HIT_N_ERROR, -} li_hit_error_t; - -static char *li_hit_error_strings[] = { -#define _(sym,string) string, - foreach_li_hit_error -#undef _ -}; - -typedef enum -{ - LI_HIT_NEXT_ETHERNET, - LI_HIT_N_NEXT, -} li_hit_next_t; - -VLIB_NODE_FN (li_hit_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - li_hit_next_t next_index; - vlib_frame_t *int_frame = 0; - u32 *to_int_next = 0; - li_main_t *lm = &li_main; - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - if (PREDICT_FALSE (vec_len (lm->collectors) == 0)) - { - vlib_node_increment_counter (vm, li_hit_node.index, - LI_HIT_ERROR_NO_COLLECTOR, n_left_from); - } - else - { - /* The intercept frame... */ - int_frame = vlib_get_frame_to_node (vm, ip4_lookup_node.index); - to_int_next = vlib_frame_vector_args (int_frame); - } - - while (n_left_from > 0) - { - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - -#if 0 - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 next0 = LI_HIT_NEXT_INTERFACE_OUTPUT; - u32 next1 = LI_HIT_NEXT_INTERFACE_OUTPUT; - u32 sw_if_index0, sw_if_index1; - u8 tmp0[6], tmp1[6]; - ethernet_header_t *en0, *en1; - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; - - /* Prefetch next iteration. */ - { - vlib_buffer_t *p2, *p3; - - p2 = vlib_get_buffer (vm, from[2]); - p3 = vlib_get_buffer (vm, from[3]); - - vlib_prefetch_buffer_header (p2, LOAD); - vlib_prefetch_buffer_header (p3, LOAD); - - clib_prefetch_store (p2->data); - clib_prefetch_store (p3->data); - } - - /* speculatively enqueue b0 and b1 to the current next frame */ - to_next[0] = bi0 = from[0]; - to_next[1] = bi1 = from[1]; - from += 2; - to_next += 2; - n_left_from -= 2; - n_left_to_next -= 2; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - - /* $$$$$ Dual loop: process 2 x packets here $$$$$ */ - ASSERT (b0->current_data == 0); - ASSERT (b1->current_data == 0); - - en0 = vlib_buffer_get_current (b0); - en1 = vlib_buffer_get_current (b1); - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - - /* Send pkt back out the RX interface */ - vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0; - vnet_buffer (b1)->sw_if_index[VLIB_TX] = sw_if_index1; - - /* $$$$$ End of processing 2 x packets $$$$$ */ - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) - { - if (b0->flags & VLIB_BUFFER_IS_TRACED) - { - li_hit_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - if (b1->flags & VLIB_BUFFER_IS_TRACED) - { - li_hit_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->sw_if_index = sw_if_index1; - t->next_index = next1; - } - } - - /* verify speculative enqueues, maybe switch current next frame */ - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, - to_next, n_left_to_next, - bi0, bi1, next0, next1); - } -#endif /* $$$ dual-loop off */ - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - vlib_buffer_t *c0; - ip4_udp_header_t *iu0; - ip4_header_t *ip0; - udp_header_t *udp0; - u32 next0 = LI_HIT_NEXT_ETHERNET; - - /* 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); - if (PREDICT_TRUE (to_int_next != 0)) - { - /* Make an intercept copy. This can fail. */ - c0 = vlib_buffer_copy (vm, b0); - - if (PREDICT_FALSE (c0 == 0)) - { - vlib_node_increment_counter - (vm, node->node_index, - LI_HIT_ERROR_BUFFER_ALLOCATION_FAILURE, 1); - goto skip; - } - - vlib_buffer_advance (c0, -sizeof (*iu0)); - - iu0 = vlib_buffer_get_current (c0); - ip0 = &iu0->ip4; - - ip0->ip_version_and_header_length = 0x45; - ip0->ttl = 254; - ip0->protocol = IP_PROTOCOL_UDP; - - ip0->src_address.as_u32 = lm->src_addrs[0].as_u32; - ip0->dst_address.as_u32 = lm->collectors[0].as_u32; - ip0->length = vlib_buffer_length_in_chain (vm, c0); - ip0->checksum = ip4_header_checksum (ip0); - - udp0 = &iu0->udp; - udp0->src_port = udp0->dst_port = - clib_host_to_net_u16 (lm->ports[0]); - udp0->checksum = 0; - udp0->length = - clib_net_to_host_u16 (vlib_buffer_length_in_chain (vm, b0)); - - to_int_next[0] = vlib_get_buffer_index (vm, c0); - to_int_next++; - } - - skip: - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - li_hit_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); - t->next_index = next0; - } - - /* 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); - } - - if (int_frame) - { - int_frame->n_vectors = frame->n_vectors; - vlib_put_frame_to_node (vm, ip4_lookup_node.index, int_frame); - } - - vlib_node_increment_counter (vm, li_hit_node.index, - LI_HIT_ERROR_HITS, frame->n_vectors); - return frame->n_vectors; -} - -VLIB_REGISTER_NODE (li_hit_node) = { - .name = "li-hit", - .vector_size = sizeof (u32), - .format_trace = format_li_hit_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(li_hit_error_strings), - .error_strings = li_hit_error_strings, - - .n_next_nodes = LI_HIT_N_NEXT, - - /* edit / add dispositions here */ - .next_nodes = { - [LI_HIT_NEXT_ETHERNET] = "ethernet-input-not-l2", - }, -}; - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |