2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
15 #include <vnet/cop/cop.h>
20 } ip6_cop_whitelist_trace_t;
22 /* packet trace format function */
23 static u8 * format_ip6_cop_whitelist_trace (u8 * s, va_list * args)
25 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
26 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
27 ip6_cop_whitelist_trace_t * t = va_arg (*args, ip6_cop_whitelist_trace_t *);
29 s = format (s, "IP6_COP_WHITELIST: sw_if_index %d, next index %d",
30 t->sw_if_index, t->next_index);
34 vlib_node_registration_t ip6_cop_whitelist_node;
36 #define foreach_ip6_cop_whitelist_error \
37 _(DROPPED, "ip6 cop whitelist packets dropped")
40 #define _(sym,str) IP6_COP_WHITELIST_ERROR_##sym,
41 foreach_ip6_cop_whitelist_error
43 IP6_COP_WHITELIST_N_ERROR,
44 } ip6_cop_whitelist_error_t;
46 static char * ip6_cop_whitelist_error_strings[] = {
47 #define _(sym,string) string,
48 foreach_ip6_cop_whitelist_error
53 ip6_cop_whitelist_node_fn (vlib_main_t * vm,
54 vlib_node_runtime_t * node,
57 u32 n_left_from, * from, * to_next;
58 cop_feature_type_t next_index;
59 cop_main_t *cm = &cop_main;
60 ip6_main_t * im6 = &ip6_main;
61 ip_lookup_main_t * lm6 = &im6->lookup_main;
62 vlib_combined_counter_main_t * vcm = &im6->lookup_main.adjacency_counters;
63 u32 cpu_index = vm->cpu_index;
65 from = vlib_frame_vector_args (frame);
66 n_left_from = frame->n_vectors;
67 next_index = node->cached_next_index;
69 while (n_left_from > 0)
73 vlib_get_next_frame (vm, node, next_index,
74 to_next, n_left_to_next);
76 while (n_left_from >= 4 && n_left_to_next >= 2)
79 vlib_buffer_t * b0, * b1;
81 u32 sw_if_index0, sw_if_index1;
82 ip6_header_t * ip0, * ip1;
83 cop_config_main_t * ccm0, * ccm1;
84 cop_config_data_t * c0, * c1;
85 u32 adj_index0, adj_index1;
86 ip_adjacency_t * adj0, * adj1;
88 /* Prefetch next iteration. */
90 vlib_buffer_t * p2, * p3;
92 p2 = vlib_get_buffer (vm, from[2]);
93 p3 = vlib_get_buffer (vm, from[3]);
95 vlib_prefetch_buffer_header (p2, LOAD);
96 vlib_prefetch_buffer_header (p3, LOAD);
98 CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
99 CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
102 /* speculatively enqueue b0 and b1 to the current next frame */
103 to_next[0] = bi0 = from[0];
104 to_next[1] = bi1 = from[1];
110 b0 = vlib_get_buffer (vm, bi0);
111 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
113 ip0 = vlib_buffer_get_current (b0);
115 ccm0 = cm->cop_config_mains + VNET_COP_IP6;
117 c0 = vnet_get_config_data
119 &vnet_buffer (b0)->cop.current_config_index,
123 adj_index0 = ip6_fib_lookup_with_table (im6, c0->fib_index,
125 adj0 = ip_get_adjacency (lm6, adj_index0);
126 if (PREDICT_FALSE(adj0->lookup_next_index != IP_LOOKUP_NEXT_LOCAL))
128 b0->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
132 b1 = vlib_get_buffer (vm, bi1);
133 sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
135 ip1 = vlib_buffer_get_current (b1);
137 ccm1 = cm->cop_config_mains + VNET_COP_IP6;
139 c1 = vnet_get_config_data
141 &vnet_buffer (b1)->cop.current_config_index,
145 adj_index1 = ip6_fib_lookup_with_table (im6, c1->fib_index,
148 adj1 = ip_get_adjacency (lm6, adj_index1);
150 vlib_increment_combined_counter
151 (vcm, cpu_index, adj_index0, 1,
152 vlib_buffer_length_in_chain (vm, b0)
153 + sizeof(ethernet_header_t));
155 vlib_increment_combined_counter
156 (vcm, cpu_index, adj_index1, 1,
157 vlib_buffer_length_in_chain (vm, b1)
158 + sizeof(ethernet_header_t));
160 if (PREDICT_FALSE(adj0->lookup_next_index != IP_LOOKUP_NEXT_LOCAL))
162 b0->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
166 if (PREDICT_FALSE(adj1->lookup_next_index != IP_LOOKUP_NEXT_LOCAL))
168 b1->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
172 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
173 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
175 ip6_cop_whitelist_trace_t *t =
176 vlib_add_trace (vm, node, b0, sizeof (*t));
177 t->sw_if_index = sw_if_index0;
178 t->next_index = next0;
181 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
182 && (b1->flags & VLIB_BUFFER_IS_TRACED)))
184 ip6_cop_whitelist_trace_t *t =
185 vlib_add_trace (vm, node, b1, sizeof (*t));
186 t->sw_if_index = sw_if_index1;
187 t->next_index = next1;
190 /* verify speculative enqueues, maybe switch current next frame */
191 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
192 to_next, n_left_to_next,
193 bi0, bi1, next0, next1);
196 while (n_left_from > 0 && n_left_to_next > 0)
203 cop_config_main_t *ccm0;
204 cop_config_data_t *c0;
206 ip_adjacency_t * adj0;
208 /* speculatively enqueue b0 to the current next frame */
216 b0 = vlib_get_buffer (vm, bi0);
217 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
219 ip0 = vlib_buffer_get_current (b0);
221 ccm0 = cm->cop_config_mains + VNET_COP_IP6;
223 c0 = vnet_get_config_data
225 &vnet_buffer (b0)->cop.current_config_index,
229 adj_index0 = ip6_fib_lookup_with_table (im6, c0->fib_index,
232 adj0 = ip_get_adjacency (lm6, adj_index0);
234 vlib_increment_combined_counter
235 (vcm, cpu_index, adj_index0, 1,
236 vlib_buffer_length_in_chain (vm, b0)
237 + sizeof(ethernet_header_t));
239 if (PREDICT_FALSE(adj0->lookup_next_index != IP_LOOKUP_NEXT_LOCAL))
241 b0->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
245 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
246 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
248 ip6_cop_whitelist_trace_t *t =
249 vlib_add_trace (vm, node, b0, sizeof (*t));
250 t->sw_if_index = sw_if_index0;
251 t->next_index = next0;
254 /* verify speculative enqueue, maybe switch current next frame */
255 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
256 to_next, n_left_to_next,
260 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
262 return frame->n_vectors;
265 VLIB_REGISTER_NODE (ip6_cop_whitelist_node) = {
266 .function = ip6_cop_whitelist_node_fn,
267 .name = "ip6-cop-whitelist",
268 .vector_size = sizeof (u32),
269 .format_trace = format_ip6_cop_whitelist_trace,
270 .type = VLIB_NODE_TYPE_INTERNAL,
272 .n_errors = ARRAY_LEN(ip6_cop_whitelist_error_strings),
273 .error_strings = ip6_cop_whitelist_error_strings,
275 .n_next_nodes = COP_RX_N_FEATURES,
277 /* edit / add dispositions here */
279 [IP4_RX_COP_WHITELIST] = "ip4-cop-whitelist",
280 [IP6_RX_COP_WHITELIST] = "ip6-cop-whitelist",
281 [DEFAULT_RX_COP_WHITELIST] = "default-cop-whitelist",
282 [IP4_RX_COP_INPUT] = "ip4-input",
283 [IP6_RX_COP_INPUT] = "ip6-input",
284 [DEFAULT_RX_COP_INPUT] = "ethernet-input",
285 [RX_COP_DROP] = "error-drop",
289 static clib_error_t *
290 ip6_whitelist_init (vlib_main_t * vm)
295 VLIB_INIT_FUNCTION (ip6_whitelist_init);