ip: Sub Address Family types. Feature enable for each SAFI
[vpp.git] / src / vnet / ip / ip.c
1 /*
2  * Copyright (c) 2017 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 <vnet/ip/ip.h>
17 #include <vnet/fib/fib_table.h>
18
19 u8
20 ip_is_zero (ip46_address_t * ip46_address, u8 is_ip4)
21 {
22   if (is_ip4)
23     return (ip46_address->ip4.as_u32 == 0);
24   else
25     return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 0);
26 }
27
28 u8
29 ip_is_local_host (ip46_address_t * ip46_address, u8 is_ip4)
30 {
31   if (is_ip4)
32     return (ip46_address->ip4.as_u8[0] == 127);
33   else
34     return (ip46_address->as_u64[0] == 0 &&
35             clib_net_to_host_u64 (ip46_address->as_u64[1]) == 1);
36 }
37
38 u8
39 ip4_is_local_host (ip4_address_t * ip4_address)
40 {
41   return (ip4_address->as_u8[0] == 127);
42 }
43
44 u8
45 ip6_is_local_host (ip6_address_t * ip6_address)
46 {
47   return (ip6_address->as_u64[0] == 0 &&
48           clib_net_to_host_u64 (ip6_address->as_u64[1]) == 1);
49 }
50
51 /**
52  * Checks that an ip is local to the requested fib
53  */
54 u8
55 ip_is_local (u32 fib_index, ip46_address_t * ip46_address, u8 is_ip4)
56 {
57   fib_node_index_t fei;
58   fib_entry_flag_t flags;
59   fib_prefix_t prefix;
60
61   /* Check if requester is local */
62   if (is_ip4)
63     {
64       prefix.fp_len = 32;
65       prefix.fp_proto = FIB_PROTOCOL_IP4;
66     }
67   else
68     {
69       prefix.fp_len = 128;
70       prefix.fp_proto = FIB_PROTOCOL_IP6;
71     }
72
73   clib_memcpy_fast (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t));
74   fei = fib_table_lookup (fib_index, &prefix);
75   flags = fib_entry_get_flags (fei);
76
77   return (flags & FIB_ENTRY_FLAG_LOCAL);
78 }
79
80 void
81 ip_copy (ip46_address_t * dst, ip46_address_t * src, u8 is_ip4)
82 {
83   if (is_ip4)
84     {
85       ip46_address_mask_ip4 (dst);
86       dst->ip4.as_u32 = src->ip4.as_u32;
87     }
88   else
89     clib_memcpy_fast (&dst->ip6, &src->ip6, sizeof (ip6_address_t));
90 }
91
92 void
93 ip_set (ip46_address_t * dst, void *src, u8 is_ip4)
94 {
95   if (is_ip4)
96     {
97       ip46_address_mask_ip4 (dst);
98       dst->ip4.as_u32 = ((ip4_address_t *) src)->as_u32;
99     }
100   else
101     clib_memcpy_fast (&dst->ip6, (ip6_address_t *) src,
102                       sizeof (ip6_address_t));
103 }
104
105 /* *INDENT-OFF* */
106 static const char *ip_arc_names[N_IP_FEATURE_LOCATIONS][N_AF][N_SAFI] = {
107   [IP_FEATURE_INPUT] = {
108     [AF_IP4] = {
109       [SAFI_UNICAST] = "ip4-unicast",
110       [SAFI_MULTICAST] = "ip4-multicast",
111     },
112     [AF_IP6] = {
113       [SAFI_UNICAST] = "ip6-unicast",
114       [SAFI_MULTICAST] = "ip6-multicast",
115     },
116   },
117   [IP_FEATURE_OUTPUT] = {
118     [AF_IP4] = {
119       [SAFI_UNICAST] = "ip4-output",
120       [SAFI_MULTICAST] = "ip4-output",
121     },
122     [AF_IP6] = {
123       [SAFI_UNICAST] = "ip6-output",
124       [SAFI_MULTICAST] = "ip6-output",
125     },
126   },
127   [IP_FEATURE_LOCAL] = {
128     [AF_IP4] = {
129       [SAFI_UNICAST] = "ip4-local",
130       [SAFI_MULTICAST] = "ip4-local",
131     },
132     [AF_IP6] = {
133       [SAFI_UNICAST] = "ip6-local",
134       [SAFI_MULTICAST] = "ip6-local",
135     },
136   },
137   [IP_FEATURE_PUNT] = {
138     [AF_IP4] = {
139       [SAFI_UNICAST] = "ip4-punt",
140       [SAFI_MULTICAST] = "ip4-punt",
141     },
142     [AF_IP6] = {
143       [SAFI_UNICAST] = "ip6-punt",
144       [SAFI_MULTICAST] = "ip6-punt",
145     },
146   },
147   [IP_FEATURE_DROP] = {
148     [AF_IP4] = {
149       [SAFI_UNICAST] = "ip4-drop",
150       [SAFI_MULTICAST] = "ip4-drop",
151     },
152     [AF_IP6] = {
153       [SAFI_UNICAST] = "ip6-drop",
154       [SAFI_MULTICAST] = "ip6-drop",
155     },
156   },
157 };
158 /* *INDENT-ON* */
159
160 void
161 ip_feature_enable_disable (ip_address_family_t af,
162                            ip_sub_address_family_t safi,
163                            ip_feature_location_t loc,
164                            const char *feature_name,
165                            u32 sw_if_index, int enable,
166                            void *feature_config, u32 n_feature_config_bytes)
167 {
168   if (IP_FEATURE_INPUT == loc)
169     {
170       if (N_SAFI == safi)
171         FOR_EACH_IP_ADDRESS_SUB_FAMILY (safi)
172           vnet_feature_enable_disable (ip_arc_names[loc][af][safi],
173                                        feature_name, sw_if_index,
174                                        enable, feature_config,
175                                        n_feature_config_bytes);
176       else
177         vnet_feature_enable_disable (ip_arc_names[loc][af][safi],
178                                      feature_name, sw_if_index,
179                                      enable, feature_config,
180                                      n_feature_config_bytes);
181     }
182   else
183     vnet_feature_enable_disable (ip_arc_names[loc][af][SAFI_UNICAST],
184                                  feature_name, sw_if_index,
185                                  enable, feature_config,
186                                  n_feature_config_bytes);
187 }
188
189
190
191 u8 *
192 format_ip_address_family (u8 * s, va_list * args)
193 {
194   ip_address_family_t af = va_arg (*args, int); // int promo ip_address_family_t);
195
196   switch (af)
197     {
198     case AF_IP4:
199       return (format (s, "ip4"));
200     case AF_IP6:
201       return (format (s, "ip6"));
202     }
203
204   return (format (s, "unknown"));
205 }
206
207 uword
208 unformat_ip_address_family (unformat_input_t * input, va_list * args)
209 {
210   ip_address_family_t *af = va_arg (*args, ip_address_family_t *);
211
212   if (unformat (input, "ip4") || unformat (input, "ipv4") ||
213       unformat (input, "IP4") || unformat (input, "IPv4"))
214     {
215       *af = AF_IP4;
216       return (1);
217     }
218   else if (unformat (input, "ip6") || unformat (input, "ipv6") ||
219            unformat (input, "IP6") || unformat (input, "IPv6"))
220     {
221       *af = AF_IP6;
222       return (1);
223     }
224   return (0);
225 }
226
227 u8 *
228 format_ip_sub_address_family (u8 * s, va_list * args)
229 {
230   ip_sub_address_family_t safi = va_arg (*args, int);   // int promo ip_sub_address_family_t);
231
232   switch (safi)
233     {
234     case SAFI_UNICAST:
235       return (format (s, "unicast"));
236     case SAFI_MULTICAST:
237       return (format (s, "multicast"));
238     }
239
240   return (format (s, "unknown"));
241 }
242
243 uword
244 unformat_ip_sub_address_family (unformat_input_t * input, va_list * args)
245 {
246   ip_sub_address_family_t *safi = va_arg (*args, ip_sub_address_family_t *);
247
248   if (unformat (input, "unicast") || unformat (input, "uni"))
249     {
250       *safi = SAFI_UNICAST;
251       return (1);
252     }
253   else if (unformat (input, "multicast") || unformat (input, "multi"))
254     {
255       *safi = SAFI_MULTICAST;
256       return (1);
257     }
258   return (0);
259 }
260
261 u8 *
262 format_ip_dscp (u8 * s, va_list * va)
263 {
264   ip_dscp_t dscp = va_arg (*va, u32);   // int promotion of u8
265
266   switch (dscp)
267     {
268 #define _(n,v)                                                  \
269     case IP_DSCP_##v:                                           \
270       return (format (s, "%s", #v));
271       foreach_ip_dscp
272 #undef _
273     }
274
275   return (format (s, "unknown"));
276 }
277
278 uword
279 unformat_ip_dscp (unformat_input_t * input, va_list * args)
280 {
281   ip_dscp_t *dscp = va_arg (*args, ip_dscp_t *);
282
283   if (0)
284     ;
285 #define _(n,v)                                                  \
286   else if (unformat (input, #v))                                \
287     *dscp = IP_DSCP_##v;
288   foreach_ip_dscp
289 #undef _
290     else
291     return 0;
292
293   return 1;
294 }
295
296 u8 *
297 format_ip_ecn (u8 * s, va_list * va)
298 {
299   ip_ecn_t ecn = va_arg (*va, u32);     // int promotion of u8
300
301   switch (ecn)
302     {
303 #define _(n,v)                                                  \
304     case IP_ECN_##v:                                           \
305       return (format (s, "%s", #v));
306       foreach_ip_ecn
307 #undef _
308     }
309
310   return (format (s, "unknown"));
311 }
312
313 /*
314  * fd.io coding-style-patch-verification: ON
315  *
316  * Local Variables:
317  * eval: (c-set-style "gnu")
318  * End:
319  */