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 #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
52 VLIB_NODE_FN (ip6_cop_whitelist_node) (vlib_main_t * vm,
53 vlib_node_runtime_t * node,
56 u32 n_left_from, * from, * to_next;
57 cop_feature_type_t next_index;
58 cop_main_t *cm = &cop_main;
59 vlib_combined_counter_main_t * vcm = &load_balance_main.lbm_via_counters;
60 u32 thread_index = vm->thread_index;
62 from = vlib_frame_vector_args (frame);
63 n_left_from = frame->n_vectors;
64 next_index = node->cached_next_index;
66 while (n_left_from > 0)
70 vlib_get_next_frame (vm, node, next_index,
71 to_next, n_left_to_next);
73 while (n_left_from >= 4 && n_left_to_next >= 2)
76 vlib_buffer_t * b0, * b1;
78 u32 sw_if_index0, sw_if_index1;
79 ip6_header_t * ip0, * ip1;
80 cop_config_main_t * ccm0, * ccm1;
81 cop_config_data_t * c0, * c1;
82 u32 lb_index0, lb_index1;
83 const load_balance_t * lb0, *lb1;
84 const dpo_id_t *dpo0, *dpo1;
86 /* Prefetch next iteration. */
88 vlib_buffer_t * p2, * p3;
90 p2 = vlib_get_buffer (vm, from[2]);
91 p3 = vlib_get_buffer (vm, from[3]);
93 vlib_prefetch_buffer_header (p2, LOAD);
94 vlib_prefetch_buffer_header (p3, LOAD);
96 CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
97 CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
100 /* speculatively enqueue b0 and b1 to the current next frame */
101 to_next[0] = bi0 = from[0];
102 to_next[1] = bi1 = from[1];
108 b0 = vlib_get_buffer (vm, bi0);
109 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
111 ip0 = vlib_buffer_get_current (b0);
113 ccm0 = cm->cop_config_mains + VNET_COP_IP6;
115 c0 = vnet_get_config_data
117 &vnet_buffer (b0)->cop.current_config_index,
121 lb_index0 = ip6_fib_table_fwding_lookup (c0->fib_index,
123 lb0 = load_balance_get (lb_index0);
124 dpo0 = load_balance_get_bucket_i(lb0, 0);
126 if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
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 lb_index1 = ip6_fib_table_fwding_lookup (c1->fib_index,
148 lb1 = load_balance_get (lb_index1);
149 dpo1 = load_balance_get_bucket_i(lb1, 0);
151 vlib_increment_combined_counter
152 (vcm, thread_index, lb_index0, 1,
153 vlib_buffer_length_in_chain (vm, b0)
154 + sizeof(ethernet_header_t));
156 vlib_increment_combined_counter
157 (vcm, thread_index, lb_index1, 1,
158 vlib_buffer_length_in_chain (vm, b1)
159 + sizeof(ethernet_header_t));
161 if (PREDICT_FALSE(dpo1->dpoi_type != DPO_RECEIVE))
163 b1->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
167 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
168 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
170 ip6_cop_whitelist_trace_t *t =
171 vlib_add_trace (vm, node, b0, sizeof (*t));
172 t->sw_if_index = sw_if_index0;
173 t->next_index = next0;
176 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
177 && (b1->flags & VLIB_BUFFER_IS_TRACED)))
179 ip6_cop_whitelist_trace_t *t =
180 vlib_add_trace (vm, node, b1, sizeof (*t));
181 t->sw_if_index = sw_if_index1;
182 t->next_index = next1;
185 /* verify speculative enqueues, maybe switch current next frame */
186 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
187 to_next, n_left_to_next,
188 bi0, bi1, next0, next1);
191 while (n_left_from > 0 && n_left_to_next > 0)
198 cop_config_main_t *ccm0;
199 cop_config_data_t *c0;
201 const load_balance_t * lb0;
202 const dpo_id_t *dpo0;
204 /* speculatively enqueue b0 to the current next frame */
212 b0 = vlib_get_buffer (vm, bi0);
213 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
215 ip0 = vlib_buffer_get_current (b0);
217 ccm0 = cm->cop_config_mains + VNET_COP_IP6;
219 c0 = vnet_get_config_data
221 &vnet_buffer (b0)->cop.current_config_index,
225 lb_index0 = ip6_fib_table_fwding_lookup (c0->fib_index,
228 lb0 = load_balance_get (lb_index0);
229 dpo0 = load_balance_get_bucket_i(lb0, 0);
231 vlib_increment_combined_counter
232 (vcm, thread_index, lb_index0, 1,
233 vlib_buffer_length_in_chain (vm, b0)
234 + sizeof(ethernet_header_t));
236 if (PREDICT_FALSE(dpo0->dpoi_type != DPO_RECEIVE))
238 b0->error = node->errors[IP6_COP_WHITELIST_ERROR_DROPPED];
242 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
243 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
245 ip6_cop_whitelist_trace_t *t =
246 vlib_add_trace (vm, node, b0, sizeof (*t));
247 t->sw_if_index = sw_if_index0;
248 t->next_index = next0;
251 /* verify speculative enqueue, maybe switch current next frame */
252 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
253 to_next, n_left_to_next,
257 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
259 return frame->n_vectors;
262 VLIB_REGISTER_NODE (ip6_cop_whitelist_node) = {
263 .name = "ip6-cop-whitelist",
264 .vector_size = sizeof (u32),
265 .format_trace = format_ip6_cop_whitelist_trace,
266 .type = VLIB_NODE_TYPE_INTERNAL,
268 .n_errors = ARRAY_LEN(ip6_cop_whitelist_error_strings),
269 .error_strings = ip6_cop_whitelist_error_strings,
271 .n_next_nodes = COP_RX_N_FEATURES,
273 /* edit / add dispositions here */
275 [IP4_RX_COP_WHITELIST] = "ip4-cop-whitelist",
276 [IP6_RX_COP_WHITELIST] = "ip6-cop-whitelist",
277 [DEFAULT_RX_COP_WHITELIST] = "default-cop-whitelist",
278 [IP4_RX_COP_INPUT] = "ip4-input",
279 [IP6_RX_COP_INPUT] = "ip6-input",
280 [DEFAULT_RX_COP_INPUT] = "ethernet-input",
281 [RX_COP_DROP] = "error-drop",
285 static clib_error_t *
286 ip6_whitelist_init (vlib_main_t * vm)
291 VLIB_INIT_FUNCTION (ip6_whitelist_init);