FD.io VPP  v20.09-64-g4f7b92f0a
Vector Packet Processing
ipip_api.c
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1 /*
2  * ipip_api.c - ipip api
3  *
4  * Copyright (c) 2018 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <vlibmemory/api.h>
19 #include <vnet/api_errno.h>
20 #include <vnet/fib/fib_table.h>
21 #include <vnet/interface.h>
22 #include <vnet/ipip/ipip.h>
23 #include <vnet/vnet.h>
24 #include <vnet/ip/ip_types_api.h>
26 
27 #include <vnet/ipip/ipip.api_enum.h>
28 #include <vnet/ipip/ipip.api_types.h>
29 
30 #define REPLY_MSG_ID_BASE im->msg_id_base
32 
33 static void
35 {
36  ipip_main_t *im = &ipip_main;
38  int rv = 0;
39  u32 fib_index, sw_if_index = ~0;
41  ip46_address_t src, dst;
42  ip46_type_t itype[2];
44 
45  itype[0] = ip_address_decode (&mp->tunnel.src, &src);
46  itype[1] = ip_address_decode (&mp->tunnel.dst, &dst);
47 
48  if (itype[0] != itype[1])
49  {
50  rv = VNET_API_ERROR_INVALID_PROTOCOL;
51  goto out;
52  }
53 
54  if (ip46_address_is_equal (&src, &dst))
55  {
56  rv = VNET_API_ERROR_SAME_SRC_DST;
57  goto out;
58  }
59 
60  rv = tunnel_encap_decap_flags_decode (mp->tunnel.flags, &flags);
61 
62  if (rv)
63  goto out;
64 
65  rv = tunnel_mode_decode (mp->tunnel.mode, &mode);
66 
67  if (rv)
68  goto out;
69 
70  fib_index = fib_table_find (fib_proto_from_ip46 (itype[0]),
71  ntohl (mp->tunnel.table_id));
72 
73  if (~0 == fib_index)
74  {
75  rv = VNET_API_ERROR_NO_SUCH_FIB;
76  }
77  else
78  {
79  rv = ipip_add_tunnel ((itype[0] == IP46_TYPE_IP6 ?
82  ntohl (mp->tunnel.instance), &src, &dst,
83  fib_index, flags,
84  ip_dscp_decode (mp->tunnel.dscp), mode,
85  &sw_if_index);
86  }
87 
88 out:
89  /* *INDENT-OFF* */
90  REPLY_MACRO2(VL_API_IPIP_ADD_TUNNEL_REPLY,
91  ({
92  rmp->sw_if_index = ntohl(sw_if_index);
93  }));
94  /* *INDENT-ON* */
95 }
96 
97 static void
99 {
100  ipip_main_t *im = &ipip_main;
101  vl_api_ipip_del_tunnel_reply_t *rmp;
102 
103  int rv = ipip_del_tunnel (ntohl (mp->sw_if_index));
104 
105  REPLY_MACRO (VL_API_IPIP_DEL_TUNNEL_REPLY);
106 }
107 
108 static void
110 {
111  ipip_main_t *im = &ipip_main;
113  bool is_ipv6 = t->transport == IPIP_TRANSPORT_IP6 ? true : false;
114  fib_table_t *ft;
115  int rv = 0;
116 
117  ft = fib_table_get (t->fib_index, (is_ipv6 ? FIB_PROTOCOL_IP6 :
119 
120  /* *INDENT-OFF* */
121  REPLY_MACRO_DETAILS2(VL_API_IPIP_TUNNEL_DETAILS,
122  ({
125  rmp->tunnel.table_id = htonl (ft->ft_table_id);
126  rmp->tunnel.instance = htonl (t->user_instance);
127  rmp->tunnel.sw_if_index = htonl (t->sw_if_index);
128  rmp->tunnel.dscp = ip_dscp_encode(t->dscp);
130  }));
131  /* *INDENT-ON* */
132 }
133 
134 static void
136 {
137  ipip_main_t *im = &ipip_main;
138  ipip_tunnel_t *t;
140 
141  sw_if_index = ntohl (mp->sw_if_index);
142 
143  if (sw_if_index == ~0)
144  {
145  /* *INDENT-OFF* */
146  pool_foreach(t, im->tunnels,
147  ({
148  send_ipip_tunnel_details(t, mp);
149  }));
150  /* *INDENT-ON* */
151  }
152  else
153  {
154  t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
155  if (t)
156  send_ipip_tunnel_details (t, mp);
157  }
158 }
159 
160 static void
162 {
163  ipip_main_t *im = &ipip_main;
165  u32 sixrd_tunnel_index, ip4_fib_index, ip6_fib_index;
166  int rv;
167 
168  sixrd_tunnel_index = ~0;
169  ip4_fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->ip4_table_id));
170  ip6_fib_index = fib_table_find (FIB_PROTOCOL_IP6, ntohl (mp->ip6_table_id));
171 
172  if (~0 == ip4_fib_index || ~0 == ip6_fib_index)
173 
174  {
175  rv = VNET_API_ERROR_NO_SUCH_FIB;
176  }
177  else
178  {
179  rv = sixrd_add_tunnel ((ip6_address_t *) & mp->ip6_prefix.address,
180  mp->ip6_prefix.len,
181  (ip4_address_t *) & mp->ip4_prefix.address,
182  mp->ip4_prefix.len,
183  (ip4_address_t *) & mp->ip4_src,
184  mp->security_check,
185  ip4_fib_index, ip6_fib_index,
186  &sixrd_tunnel_index);
187  }
188 
189  /* *INDENT-OFF* */
190  REPLY_MACRO2 (VL_API_IPIP_6RD_ADD_TUNNEL_REPLY,
191  ({
192  rmp->sw_if_index = htonl (sixrd_tunnel_index);
193  }));
194  /* *INDENT-ON* */
195 }
196 
197 static void
199 {
200  ipip_main_t *im = &ipip_main;
201  vl_api_ipip_6rd_del_tunnel_reply_t *rmp;
202 
203  int rv = sixrd_del_tunnel (ntohl (mp->sw_if_index));
204 
205  REPLY_MACRO (VL_API_IPIP_6RD_DEL_TUNNEL_REPLY);
206 }
207 
208 /*
209  * ipip_api_hookup
210  * Add vpe's API message handlers to the table.
211  * vlib has already mapped shared memory and
212  * added the client registration handlers.
213  * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
214  */
215 /* API definitions */
216 #include <vnet/format_fns.h>
217 #include <vnet/ipip/ipip.api.c>
218 
219 static clib_error_t *
221 {
222  ipip_main_t *im = &ipip_main;
223 
224  /*
225  * Set up the (msg_name, crc, message-id) table
226  */
228 
229  return 0;
230 }
231 
233 
234 /*
235  * fd.io coding-style-patch-verification: ON
236  *
237  * Local Variables:
238  * eval: (c-set-style "gnu")
239  * End:
240  */
vl_api_interface_index_t sw_if_index
Definition: ipip.api:99
int sixrd_add_tunnel(ip6_address_t *ip6_prefix, u8 ip6_prefix_len, ip4_address_t *ip4_prefix, u8 ip4_prefix_len, ip4_address_t *ip4_src, bool security_check, u32 ip4_fib_index, u32 ip6_fib_index, u32 *sw_if_index)
Definition: sixrd.c:271
Create an IPv4 over IPv6 automatic tunnel (6RD)
Definition: ipip.api:105
vl_api_wireguard_peer_flags_t flags
Definition: wireguard.api:103
vl_api_interface_index_t sw_if_index
Definition: ipip.api:133
A representation of a IPIP tunnel.
Definition: ipip.h:75
ip46_address_t tunnel_src
Definition: ipip.h:82
static void send_ipip_tunnel_details(ipip_tunnel_t *t, vl_api_ipip_tunnel_dump_t *mp)
Definition: ipip_api.c:109
vl_api_ipip_tunnel_t tunnel
Definition: ipip.api:82
vl_api_ip4_address_t ip4_src
Definition: ipip.api:113
#define REPLY_MACRO2(t, body)
static void vl_api_ipip_6rd_add_tunnel_t_handler(vl_api_ipip_6rd_add_tunnel_t *mp)
Definition: ipip_api.c:161
vl_api_address_t src
Definition: gre.api:54
static void vl_api_ipip_6rd_del_tunnel_t_handler(vl_api_ipip_6rd_del_tunnel_t *mp)
Definition: ipip_api.c:198
vlib_main_t * vm
Definition: in2out_ed.c:1582
vl_api_tunnel_encap_decap_flags_t tunnel_encap_decap_flags_encode(tunnel_encap_decap_flags_t f)
int ipip_add_tunnel(ipip_transport_t transport, u32 instance, ip46_address_t *src, ip46_address_t *dst, u32 fib_index, tunnel_encap_decap_flags_t flags, ip_dscp_t dscp, tunnel_mode_t tmode, u32 *sw_if_indexp)
Definition: ipip.c:653
vl_api_interface_index_t sw_if_index
Definition: ipip.api:89
ip_dscp_t ip_dscp_decode(vl_api_ip_dscp_t in)
Definition: ip_types_api.c:99
Delete an IP{v4,v6} over IP{v4,v6} tunnel.
Definition: ipip.api:95
static clib_error_t * ipip_api_hookup(vlib_main_t *vm)
Definition: ipip_api.c:220
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:513
u32 user_instance
Definition: ipip.h:88
Create an IP{v4,v6} over IP{v4,v6} tunnel.
Definition: ipip.api:78
unsigned int u32
Definition: types.h:88
u32 fib_table_find(fib_protocol_t proto, u32 table_id)
Get the index of the FIB for a Table-ID.
Definition: fib_table.c:1097
ip46_type_t ip_address_decode(const vl_api_address_t *in, ip46_address_t *out)
Decode/Encode for struct/union types.
Definition: ip_types_api.c:160
fib_protocol_t fib_proto_from_ip46(ip46_type_t iproto)
Convert from ip46_type to fib_protocol.
Definition: fib_types.c:390
List all IPIP tunnels.
Definition: ipip.api:139
tunnel_encap_decap_flags_t flags
Definition: ipip.h:89
static void vl_api_ipip_tunnel_dump_t_handler(vl_api_ipip_tunnel_dump_t *mp)
Definition: ipip_api.c:135
ipip_tunnel_t * ipip_tunnel_db_find_by_sw_if_index(u32 sw_if_index)
Definition: ipip.c:496
ipip_tunnel_t * tunnels
Definition: ipip.h:106
#define REPLY_MACRO(t)
int sixrd_del_tunnel(u32 sw_if_index)
Definition: sixrd.c:374
int tunnel_mode_decode(vl_api_tunnel_mode_t in, tunnel_mode_t *out)
vl_api_address_t dst
Definition: gre.api:55
enum tunnel_encap_decap_flags_t_ tunnel_encap_decap_flags_t
vl_api_ip4_prefix_t ip4_prefix
Definition: ipip.api:112
vl_api_tunnel_mode_t mode
Definition: gre.api:48
static u8 ip46_address_is_equal(const ip46_address_t *ip46_1, const ip46_address_t *ip46_2)
Definition: ip46_address.h:93
ip_dscp_t dscp
Definition: ipip.h:90
#define REPLY_MACRO_DETAILS2(t, body)
ipip_main_t ipip_main
Definition: ipip.c:31
u32 ft_table_id
Table ID (hash key) for this FIB.
Definition: fib_table.h:92
static void vl_api_ipip_del_tunnel_t_handler(vl_api_ipip_del_tunnel_t *mp)
Definition: ipip_api.c:98
u32 fib_index
Definition: ipip.h:84
vl_api_ip_dscp_t ip_dscp_encode(ip_dscp_t dscp)
Definition: ip_types_api.c:105
ipip_transport_t transport
Definition: ipip.h:81
vl_api_ipip_tunnel_t tunnel
Definition: ipip.api:149
vl_api_interface_index_t sw_if_index
Definition: ipip.api:123
static void vl_api_ipip_add_tunnel_t_handler(vl_api_ipip_add_tunnel_t *mp)
Definition: ipip_api.c:34
u32 sw_if_index
Definition: ipip.h:86
u16 msg_id_base
Definition: ipip.h:120
fib_table_t * fib_table_get(fib_node_index_t index, fib_protocol_t proto)
Get a pointer to a FIB table.
Definition: fib_table.c:29
int ipip_del_tunnel(u32 sw_if_index)
Definition: ipip.c:761
void ip_address_encode(const ip46_address_t *in, ip46_type_t type, vl_api_address_t *out)
Definition: ip_types_api.c:194
VLIB_API_INIT_FUNCTION(ipip_api_hookup)
vl_api_interface_index_t sw_if_index
Definition: ipip.api:143
vl_api_ip6_prefix_t ip6_prefix
Definition: ipip.api:111
static void setup_message_id_table(snat_main_t *sm, api_main_t *am)
Definition: nat_api.c:2804
bool is_ipv6
Definition: dhcp.api:202
int tunnel_encap_decap_flags_decode(vl_api_tunnel_encap_decap_flags_t f, tunnel_encap_decap_flags_t *o)
Conversion functions to/from (decode/encode) API types to VPP internal types.
ip46_address_t tunnel_dst
Definition: ipip.h:83
enum tunnel_mode_t_ tunnel_mode_t
vl_api_interface_index_t sw_if_index
Definition: wireguard.api:33
Delete an IPv4 over IPv6 automatic tunnel (6RD)
Definition: ipip.api:129
A protocol Independent FIB table.
Definition: fib_table.h:71
ip46_type_t
Definition: ip46_address.h:22