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>
16 #include <vnet/fib/ip6_fib.h>
17 #include <vnet/dpo/load_balance.h>
22 } ip6_cop_whitelist_trace_t;
24 /* packet trace format function */
25 static u8 * format_ip6_cop_whitelist_trace (u8 * s, va_list * args)
27 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
28 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
29 ip6_cop_whitelist_trace_t * t = va_arg (*args, ip6_cop_whitelist_trace_t *);
31 s = format (s, "IP6_COP_WHITELIST: sw_if_index %d, next index %d",
32 t->sw_if_index, t->next_index);
36 vlib_node_registration_t ip6_cop_whitelist_node;
38 #define foreach_ip6_cop_whitelist_error \
39 _(DROPPED, "ip6 cop whitelist packets dropped")
42 #define _(sym,str) IP6_COP_WHITELIST_ERROR_##sym,
43 foreach_ip6_cop_whitelist_error
45 IP6_COP_WHITELIST_N_ERROR,
46 } ip6_cop_whitelist_error_t;
48 static char * ip6_cop_whitelist_error_strings[] = {
49 #define _(sym,string) string,
50 foreach_ip6_cop_whitelist_error
55 ip6_cop_whitelist_node_fn (vlib_main_t * vm,
56 vlib_node_runtime_t * node,
59 u32 n_left_from, * from, * to_next;
60 cop_feature_type_t next_index;
61 cop_main_t *cm = &cop_main;
62 ip6_main_t * im6 = &ip6_main;
63 vlib_combined_counter_main_t * vcm = &load_balance_main.lbm_via_counters;
64 u32 thread_index = vm->thread_index;
66 from = vlib_frame_vector_args (frame);
67 n_left_from = frame->n_vectors;
68 next_index = node->cached_next_index;
70 while (n_left_from > 0)
74 vlib_get_next_frame (vm, node, next_index,
75 to_next, n_left_to_next);
77 while (n_left_from >= 4 && n_left_to_next >= 2)
80 vlib_buffer_t * b0, * b1;
82 u32 sw_if_index0, sw_if_index1;
83 ip6_header_t * ip0, * ip1;
84 cop_config_main_t * ccm0, * ccm1;
85 cop_config_data_t * c0, * c1;
86 u32 lb_index0, lb_index1;
87 const load_balance_t * lb0, *lb1;
88 const dpo_id_t *dpo0, *dpo1;
90 /* Prefetch next iteration. */
92 vlib_buffer_t * p2, * p3;
94 p2 = vlib_get_buffer (vm, from[2]);
95 p3 = vlib_get_buffer (vm, from[3]);
97 vlib_prefetch_buffer_header (p2, LOAD);
98 vlib_prefetch_buffer_header (p3, LOAD);
100 CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
101 CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
104 /* speculatively enqueue b0 and b1 to the current next frame */
105 to_next[0] = bi0 = from[0];
106 to_next[1] = bi1 = from[1];
112 b0 = vlib_get_buffer (vm, bi0);
113 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
115 ip0 = vlib_buffer_get_current (b0);
117 ccm0 = cm->cop_config_mains + VNET_COP_IP6;
119 c0 = vnet_get_config_data
121 &vnet_buffer (b0)->cop.current_config_index,
125 lb_index0 = ip6_fib_table_fwding_lookup (im6, c0->fib_index,
127 lb0 = load_balance_get (lb_index0);
128 dpo0 = load_balance_get_bucket_i(lb0, 0);
130 if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
132 b0->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
136 b1 = vlib_get_buffer (vm, bi1);
137 sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
139 ip1 = vlib_buffer_get_current (b1);
141 ccm1 = cm->cop_config_mains + VNET_COP_IP6;
143 c1 = vnet_get_config_data
145 &vnet_buffer (b1)->cop.current_config_index,
149 lb_index1 = ip6_fib_table_fwding_lookup (im6, c1->fib_index,
152 lb1 = load_balance_get (lb_index1);
153 dpo1 = load_balance_get_bucket_i(lb1, 0);
155 vlib_increment_combined_counter
156 (vcm, thread_index, lb_index0, 1,
157 vlib_buffer_length_in_chain (vm, b0)
158 + sizeof(ethernet_header_t));
160 vlib_increment_combined_counter
161 (vcm, thread_index, lb_index1, 1,
162 vlib_buffer_length_in_chain (vm, b1)
163 + sizeof(ethernet_header_t));
165 if (PREDICT_FALSE(dpo1->dpoi_type != DPO_RECEIVE))
167 b1->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
171 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
172 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
174 ip6_cop_whitelist_trace_t *t =
175 vlib_add_trace (vm, node, b0, sizeof (*t));
176 t->sw_if_index = sw_if_index0;
177 t->next_index = next0;
180 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
181 && (b1->flags & VLIB_BUFFER_IS_TRACED)))
183 ip6_cop_whitelist_trace_t *t =
184 vlib_add_trace (vm, node, b1, sizeof (*t));
185 t->sw_if_index = sw_if_index1;
186 t->next_index = next1;
189 /* verify speculative enqueues, maybe switch current next frame */
190 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
191 to_next, n_left_to_next,
192 bi0, bi1, next0, next1);
195 while (n_left_from > 0 && n_left_to_next > 0)
202 cop_config_main_t *ccm0;
203 cop_config_data_t *c0;
205 const load_balance_t * lb0;
206 const dpo_id_t *dpo0;
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 lb_index0 = ip6_fib_table_fwding_lookup (im6, c0->fib_index,
232 lb0 = load_balance_get (lb_index0);
233 dpo0 = load_balance_get_bucket_i(lb0, 0);
235 vlib_increment_combined_counter
236 (vcm, thread_index, lb_index0, 1,
237 vlib_buffer_length_in_chain (vm, b0)
238 + sizeof(ethernet_header_t));
240 if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
242 b0->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
246 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
247 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
249 ip6_cop_whitelist_trace_t *t =
250 vlib_add_trace (vm, node, b0, sizeof (*t));
251 t->sw_if_index = sw_if_index0;
252 t->next_index = next0;
255 /* verify speculative enqueue, maybe switch current next frame */
256 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
257 to_next, n_left_to_next,
261 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
263 return frame->n_vectors;
266 VLIB_REGISTER_NODE (ip6_cop_whitelist_node) = {
267 .function = ip6_cop_whitelist_node_fn,
268 .name = "ip6-cop-whitelist",
269 .vector_size = sizeof (u32),
270 .format_trace = format_ip6_cop_whitelist_trace,
271 .type = VLIB_NODE_TYPE_INTERNAL,
273 .n_errors = ARRAY_LEN(ip6_cop_whitelist_error_strings),
274 .error_strings = ip6_cop_whitelist_error_strings,
276 .n_next_nodes = COP_RX_N_FEATURES,
278 /* edit / add dispositions here */
280 [IP4_RX_COP_WHITELIST] = "ip4-cop-whitelist",
281 [IP6_RX_COP_WHITELIST] = "ip6-cop-whitelist",
282 [DEFAULT_RX_COP_WHITELIST] = "default-cop-whitelist",
283 [IP4_RX_COP_INPUT] = "ip4-input",
284 [IP6_RX_COP_INPUT] = "ip6-input",
285 [DEFAULT_RX_COP_INPUT] = "ethernet-input",
286 [RX_COP_DROP] = "error-drop",
290 VLIB_NODE_FUNCTION_MULTIARCH (ip6_cop_whitelist_node, ip6_cop_whitelist_node_fn)
292 static clib_error_t *
293 ip6_whitelist_init (vlib_main_t * vm)
298 VLIB_INIT_FUNCTION (ip6_whitelist_init);