Line data Source code
1 : /*
2 : * Copyright (c) 2019 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:
6 : *
7 : * http://www.apache.org/licenses/LICENSE-2.0
8 : *
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.
14 : */
15 :
16 : #include <plugins/l3xc/l3xc.h>
17 : #include <vnet/feature/feature.h>
18 :
19 : typedef enum l3xc_next_t_
20 : {
21 : L3XC_NEXT_DROP,
22 : L3XC_N_NEXT,
23 : } l3xc_next_t;
24 :
25 : typedef struct l3xc_input_trace_t_
26 : {
27 : index_t l3xci;
28 : index_t lbi;
29 : } l3xc_input_trace_t;
30 :
31 : typedef enum
32 : {
33 : #define l3xc_error(n,s) L3XC_ERROR_##n,
34 : #include "l3xc_error.def"
35 : #undef l3xc_error
36 : L3XC_N_ERROR,
37 : } l3xc_error_t;
38 :
39 : always_inline uword
40 1 : l3xc_input_inline (vlib_main_t * vm,
41 : vlib_node_runtime_t * node,
42 : vlib_frame_t * frame, fib_protocol_t fproto)
43 : {
44 : vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
45 : u16 nexts[VLIB_FRAME_SIZE], *next;
46 : u32 n_left, *from;
47 :
48 1 : from = vlib_frame_vector_args (frame);
49 1 : n_left = frame->n_vectors;
50 1 : b = bufs;
51 1 : next = nexts;
52 :
53 1 : vlib_get_buffers (vm, from, bufs, n_left);
54 :
55 16 : while (n_left >= 8)
56 : {
57 : const l3xc_t *l3xc0, *l3xc1, *l3xc2, *l3xc3;
58 : u32 l3xci0, l3xci1, l3xci2, l3xci3;
59 : u32 next_u32;
60 :
61 : /* Prefetch next iteration. */
62 : {
63 15 : vlib_prefetch_buffer_header (b[4], LOAD);
64 15 : vlib_prefetch_buffer_header (b[5], LOAD);
65 15 : vlib_prefetch_buffer_header (b[6], LOAD);
66 15 : vlib_prefetch_buffer_header (b[7], LOAD);
67 : }
68 :
69 15 : l3xci0 =
70 15 : *(u32 *) vnet_feature_next_with_data (&next_u32, b[0],
71 : sizeof (l3xci0));
72 15 : l3xci1 =
73 15 : *(u32 *) vnet_feature_next_with_data (&next_u32, b[1],
74 : sizeof (l3xci1));
75 15 : l3xci2 =
76 15 : *(u32 *) vnet_feature_next_with_data (&next_u32, b[2],
77 : sizeof (l3xci2));
78 15 : l3xci3 =
79 15 : *(u32 *) vnet_feature_next_with_data (&next_u32, b[3],
80 : sizeof (l3xci3));
81 :
82 15 : l3xc0 = l3xc_get (l3xci0);
83 15 : l3xc1 = l3xc_get (l3xci1);
84 15 : l3xc2 = l3xc_get (l3xci2);
85 15 : l3xc3 = l3xc_get (l3xci3);
86 :
87 15 : next[0] = l3xc0->l3xc_dpo.dpoi_next_node;
88 15 : next[1] = l3xc1->l3xc_dpo.dpoi_next_node;
89 15 : next[2] = l3xc2->l3xc_dpo.dpoi_next_node;
90 15 : next[3] = l3xc3->l3xc_dpo.dpoi_next_node;
91 :
92 15 : vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = l3xc0->l3xc_dpo.dpoi_index;
93 15 : vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = l3xc1->l3xc_dpo.dpoi_index;
94 15 : vnet_buffer (b[2])->ip.adj_index[VLIB_TX] = l3xc2->l3xc_dpo.dpoi_index;
95 15 : vnet_buffer (b[3])->ip.adj_index[VLIB_TX] = l3xc3->l3xc_dpo.dpoi_index;
96 :
97 15 : if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
98 : {
99 15 : if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
100 : {
101 : l3xc_input_trace_t *tr;
102 :
103 15 : tr = vlib_add_trace (vm, node, b[0], sizeof (*tr));
104 15 : tr->l3xci = l3xci0;
105 15 : tr->lbi = vnet_buffer (b[0])->ip.adj_index[VLIB_TX];
106 : }
107 15 : if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED))
108 : {
109 : l3xc_input_trace_t *tr;
110 :
111 15 : tr = vlib_add_trace (vm, node, b[1], sizeof (*tr));
112 15 : tr->l3xci = l3xci1;
113 15 : tr->lbi = vnet_buffer (b[1])->ip.adj_index[VLIB_TX];
114 : }
115 15 : if (PREDICT_FALSE (b[2]->flags & VLIB_BUFFER_IS_TRACED))
116 : {
117 : l3xc_input_trace_t *tr;
118 :
119 15 : tr = vlib_add_trace (vm, node, b[2], sizeof (*tr));
120 15 : tr->l3xci = l3xci2;
121 15 : tr->lbi = vnet_buffer (b[2])->ip.adj_index[VLIB_TX];
122 : }
123 15 : if (PREDICT_FALSE (b[3]->flags & VLIB_BUFFER_IS_TRACED))
124 : {
125 : l3xc_input_trace_t *tr;
126 :
127 15 : tr = vlib_add_trace (vm, node, b[3], sizeof (*tr));
128 15 : tr->l3xci = l3xci3;
129 15 : tr->lbi = vnet_buffer (b[3])->ip.adj_index[VLIB_TX];
130 : }
131 : }
132 :
133 15 : b += 4;
134 15 : next += 4;
135 15 : n_left -= 4;
136 : }
137 :
138 8 : while (n_left > 0)
139 : {
140 : u32 l3xci0, next_u32;
141 : const l3xc_t *l3xc0;
142 :
143 7 : l3xci0 =
144 7 : *(u32 *) vnet_feature_next_with_data (&next_u32, b[0],
145 : sizeof (l3xci0));
146 :
147 7 : l3xc0 = l3xc_get (l3xci0);
148 :
149 7 : next[0] = l3xc0->l3xc_dpo.dpoi_next_node;
150 :
151 7 : vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = l3xc0->l3xc_dpo.dpoi_index;
152 :
153 7 : if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
154 : {
155 : l3xc_input_trace_t *tr;
156 :
157 7 : tr = vlib_add_trace (vm, node, b[0], sizeof (*tr));
158 7 : tr->l3xci = l3xci0;
159 7 : tr->lbi = vnet_buffer (b[0])->ip.adj_index[VLIB_TX];
160 : }
161 :
162 7 : b += 1;
163 7 : next += 1;
164 7 : n_left -= 1;
165 : }
166 :
167 1 : vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
168 1 : return frame->n_vectors;
169 : }
170 :
171 : static uword
172 1 : l3xc_input_ip4 (vlib_main_t * vm,
173 : vlib_node_runtime_t * node, vlib_frame_t * frame)
174 : {
175 1 : return l3xc_input_inline (vm, node, frame, FIB_PROTOCOL_IP4);
176 : }
177 :
178 : static uword
179 0 : l3xc_input_ip6 (vlib_main_t * vm,
180 : vlib_node_runtime_t * node, vlib_frame_t * frame)
181 : {
182 0 : return l3xc_input_inline (vm, node, frame, FIB_PROTOCOL_IP6);
183 : }
184 :
185 : static u8 *
186 50 : format_l3xc_input_trace (u8 * s, va_list * args)
187 : {
188 50 : CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
189 50 : CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
190 50 : l3xc_input_trace_t *t = va_arg (*args, l3xc_input_trace_t *);
191 :
192 50 : s = format (s, "l3xc-index:%d lb-index:%d", t->l3xci, t->lbi);
193 50 : return s;
194 : }
195 :
196 : static char *l3xc_error_strings[] = {
197 : #define l3xc_error(n,s) s,
198 : #include "l3xc_error.def"
199 : #undef l3xc_error
200 : };
201 :
202 : /* *INDENT-OFF* */
203 108120 : VLIB_REGISTER_NODE (l3xc_ip4_node) =
204 : {
205 : .function = l3xc_input_ip4,
206 : .name = "l3xc-input-ip4",
207 : .vector_size = sizeof (u32),
208 : .format_trace = format_l3xc_input_trace,
209 : .type = VLIB_NODE_TYPE_INTERNAL,
210 : .n_errors = L3XC_N_ERROR,
211 : .error_strings = l3xc_error_strings,
212 : .n_next_nodes = L3XC_N_NEXT,
213 : .next_nodes =
214 : {
215 : [L3XC_NEXT_DROP] = "error-drop",
216 : }
217 : };
218 :
219 108120 : VLIB_REGISTER_NODE (l3xc_ip6_node) =
220 : {
221 : .function = l3xc_input_ip6,
222 : .name = "l3xc-input-ip6",
223 : .vector_size = sizeof (u32),
224 : .format_trace = format_l3xc_input_trace,
225 : .type = VLIB_NODE_TYPE_INTERNAL,
226 : .n_errors = 0,
227 : .n_next_nodes = L3XC_N_NEXT,
228 :
229 : .next_nodes =
230 : {
231 : [L3XC_NEXT_DROP] = "error-drop",
232 : }
233 : };
234 :
235 45943 : VNET_FEATURE_INIT (l3xc_ip4_feat, static) =
236 : {
237 : .arc_name = "ip4-unicast",
238 : .node_name = "l3xc-input-ip4",
239 : .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"),
240 : };
241 :
242 45943 : VNET_FEATURE_INIT (l3xc_ip6_feat, static) =
243 : {
244 : .arc_name = "ip6-unicast",
245 : .node_name = "l3xc-input-ip6",
246 : .runs_after = VNET_FEATURES ("acl-plugin-in-ip6-fa"),
247 : };
248 : /* *INDENT-ON* */
249 :
250 : /*
251 : * fd.io coding-style-patch-verification: ON
252 : *
253 : * Local Variables:
254 : * eval: (c-set-style "gnu")
255 : * End:
256 : */
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