+++ /dev/null
-/*
- * Copyright (c) 2016 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 <vnet/cop/cop.h>
-#include <vnet/fib/ip6_fib.h>
-#include <vnet/dpo/load_balance.h>
-
-typedef struct {
- u32 next_index;
- u32 sw_if_index;
-} ip6_cop_whitelist_trace_t;
-
-/* packet trace format function */
-static u8 * format_ip6_cop_whitelist_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 *);
- ip6_cop_whitelist_trace_t * t = va_arg (*args, ip6_cop_whitelist_trace_t *);
-
- s = format (s, "IP6_COP_WHITELIST: sw_if_index %d, next index %d",
- t->sw_if_index, t->next_index);
- return s;
-}
-
-#define foreach_ip6_cop_whitelist_error \
-_(DROPPED, "ip6 cop whitelist packets dropped")
-
-typedef enum {
-#define _(sym,str) IP6_COP_WHITELIST_ERROR_##sym,
- foreach_ip6_cop_whitelist_error
-#undef _
- IP6_COP_WHITELIST_N_ERROR,
-} ip6_cop_whitelist_error_t;
-
-static char * ip6_cop_whitelist_error_strings[] = {
-#define _(sym,string) string,
- foreach_ip6_cop_whitelist_error
-#undef _
-};
-
-VLIB_NODE_FN (ip6_cop_whitelist_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- u32 n_left_from, * from, * to_next;
- cop_feature_type_t next_index;
- cop_main_t *cm = &cop_main;
- vlib_combined_counter_main_t * vcm = &load_balance_main.lbm_via_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)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index,
- to_next, n_left_to_next);
-
- while (n_left_from >= 4 && n_left_to_next >= 2)
- {
- u32 bi0, bi1;
- vlib_buffer_t * b0, * b1;
- u32 next0, next1;
- u32 sw_if_index0, sw_if_index1;
- ip6_header_t * ip0, * ip1;
- cop_config_main_t * ccm0, * ccm1;
- cop_config_data_t * c0, * c1;
- u32 lb_index0, lb_index1;
- const load_balance_t * lb0, *lb1;
- const dpo_id_t *dpo0, *dpo1;
-
- /* 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 (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
- }
-
- /* 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);
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
-
- ip0 = vlib_buffer_get_current (b0);
-
- ccm0 = cm->cop_config_mains + VNET_COP_IP6;
-
- c0 = vnet_get_config_data
- (&ccm0->config_main,
- &vnet_buffer (b0)->cop.current_config_index,
- &next0,
- sizeof (c0[0]));
-
- lb_index0 = ip6_fib_table_fwding_lookup (c0->fib_index,
- &ip0->src_address);
- lb0 = load_balance_get (lb_index0);
- dpo0 = load_balance_get_bucket_i(lb0, 0);
-
- if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
- {
- b0->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
- next0 = RX_COP_DROP;
- }
-
- b1 = vlib_get_buffer (vm, bi1);
- sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
-
- ip1 = vlib_buffer_get_current (b1);
-
- ccm1 = cm->cop_config_mains + VNET_COP_IP6;
-
- c1 = vnet_get_config_data
- (&ccm1->config_main,
- &vnet_buffer (b1)->cop.current_config_index,
- &next1,
- sizeof (c1[0]));
-
- lb_index1 = ip6_fib_table_fwding_lookup (c1->fib_index,
- &ip1->src_address);
-
- lb1 = load_balance_get (lb_index1);
- dpo1 = load_balance_get_bucket_i(lb1, 0);
-
- vlib_increment_combined_counter
- (vcm, thread_index, lb_index0, 1,
- vlib_buffer_length_in_chain (vm, b0)
- + sizeof(ethernet_header_t));
-
- vlib_increment_combined_counter
- (vcm, thread_index, lb_index1, 1,
- vlib_buffer_length_in_chain (vm, b1)
- + sizeof(ethernet_header_t));
-
- if (PREDICT_FALSE(dpo1->dpoi_type != DPO_RECEIVE))
- {
- b1->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
- next1 = RX_COP_DROP;
- }
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- ip6_cop_whitelist_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- }
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b1->flags & VLIB_BUFFER_IS_TRACED)))
- {
- ip6_cop_whitelist_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);
- }
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t * b0;
- u32 next0;
- u32 sw_if_index0;
- ip6_header_t * ip0;
- cop_config_main_t *ccm0;
- cop_config_data_t *c0;
- u32 lb_index0;
- const load_balance_t * lb0;
- const dpo_id_t *dpo0;
-
- /* 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);
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
-
- ip0 = vlib_buffer_get_current (b0);
-
- ccm0 = cm->cop_config_mains + VNET_COP_IP6;
-
- c0 = vnet_get_config_data
- (&ccm0->config_main,
- &vnet_buffer (b0)->cop.current_config_index,
- &next0,
- sizeof (c0[0]));
-
- lb_index0 = ip6_fib_table_fwding_lookup (c0->fib_index,
- &ip0->src_address);
-
- lb0 = load_balance_get (lb_index0);
- dpo0 = load_balance_get_bucket_i(lb0, 0);
-
- vlib_increment_combined_counter
- (vcm, thread_index, lb_index0, 1,
- vlib_buffer_length_in_chain (vm, b0)
- + sizeof(ethernet_header_t));
-
- if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
- {
- b0->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
- next0 = RX_COP_DROP;
- }
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- ip6_cop_whitelist_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- 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);
- }
- return frame->n_vectors;
-}
-
-VLIB_REGISTER_NODE (ip6_cop_whitelist_node) = {
- .name = "ip6-cop-whitelist",
- .vector_size = sizeof (u32),
- .format_trace = format_ip6_cop_whitelist_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(ip6_cop_whitelist_error_strings),
- .error_strings = ip6_cop_whitelist_error_strings,
-
- .n_next_nodes = COP_RX_N_FEATURES,
-
- /* edit / add dispositions here */
- .next_nodes = {
- [IP4_RX_COP_WHITELIST] = "ip4-cop-whitelist",
- [IP6_RX_COP_WHITELIST] = "ip6-cop-whitelist",
- [DEFAULT_RX_COP_WHITELIST] = "default-cop-whitelist",
- [IP4_RX_COP_INPUT] = "ip4-input",
- [IP6_RX_COP_INPUT] = "ip6-input",
- [DEFAULT_RX_COP_INPUT] = "ethernet-input",
- [RX_COP_DROP] = "error-drop",
- },
-};
-
-static clib_error_t *
-ip6_whitelist_init (vlib_main_t * vm)
-{
- return 0;
-}
-
-VLIB_INIT_FUNCTION (ip6_whitelist_init);
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