Line data Source code
1 : /*
2 : *------------------------------------------------------------------
3 : * l2tp_api.c - l2tpv3 api
4 : *
5 : * Copyright (c) 2016 Cisco and/or its affiliates.
6 : * Licensed under the Apache License, Version 2.0 (the "License");
7 : * you may not use this file except in compliance with the License.
8 : * You may obtain a copy of the License at:
9 : *
10 : * http://www.apache.org/licenses/LICENSE-2.0
11 : *
12 : * Unless required by applicable law or agreed to in writing, software
13 : * distributed under the License is distributed on an "AS IS" BASIS,
14 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 : * See the License for the specific language governing permissions and
16 : * limitations under the License.
17 : *------------------------------------------------------------------
18 : */
19 :
20 : #include <vnet/vnet.h>
21 : #include <vlibmemory/api.h>
22 :
23 : #include <vnet/interface.h>
24 : #include <vnet/api_errno.h>
25 : #include <l2tp/l2tp.h>
26 : #include <vnet/ip/ip_types_api.h>
27 :
28 : /* define message IDs */
29 : #include <vnet/format_fns.h>
30 : #include <l2tp/l2tp.api_enum.h>
31 : #include <l2tp/l2tp.api_types.h>
32 :
33 : /**
34 : * Base message ID fot the plugin
35 : */
36 : static u32 l2tp_base_msg_id;
37 : #define REPLY_MSG_ID_BASE l2tp_base_msg_id
38 :
39 : #include <vlibapi/api_helper_macros.h>
40 :
41 : static void
42 0 : send_sw_if_l2tpv3_tunnel_details (vpe_api_main_t * am,
43 : vl_api_registration_t * reg,
44 : l2t_session_t * s,
45 : l2t_main_t * lm, u32 context)
46 : {
47 : vl_api_sw_if_l2tpv3_tunnel_details_t *mp;
48 0 : u8 *if_name = NULL;
49 0 : vnet_sw_interface_t *si = NULL;
50 :
51 0 : si = vnet_get_hw_sw_interface (lm->vnet_main, s->hw_if_index);
52 :
53 0 : if_name = format (if_name, "%U",
54 : format_vnet_sw_interface_name, lm->vnet_main, si);
55 :
56 0 : mp = vl_msg_api_alloc (sizeof (*mp));
57 0 : clib_memset (mp, 0, sizeof (*mp));
58 0 : mp->_vl_msg_id =
59 0 : ntohs (VL_API_SW_IF_L2TPV3_TUNNEL_DETAILS + REPLY_MSG_ID_BASE);
60 0 : strncpy ((char *) mp->interface_name, (char *) if_name,
61 : ARRAY_LEN (mp->interface_name) - 1);
62 0 : mp->sw_if_index = ntohl (si->sw_if_index);
63 0 : mp->local_session_id = s->local_session_id;
64 0 : mp->remote_session_id = s->remote_session_id;
65 0 : mp->local_cookie[0] = s->local_cookie[0];
66 0 : mp->local_cookie[1] = s->local_cookie[1];
67 0 : mp->remote_cookie = s->remote_cookie;
68 0 : ip_address_encode ((ip46_address_t *) & s->client_address, IP46_TYPE_IP6,
69 : &mp->client_address);
70 0 : ip_address_encode ((ip46_address_t *) & s->our_address, IP46_TYPE_IP6,
71 : &mp->our_address);
72 0 : mp->l2_sublayer_present = s->l2_sublayer_present;
73 0 : mp->context = context;
74 :
75 0 : vl_api_send_msg (reg, (u8 *) mp);
76 0 : }
77 :
78 :
79 : static void
80 0 : vl_api_sw_if_l2tpv3_tunnel_dump_t_handler (vl_api_sw_if_l2tpv3_tunnel_dump_t *
81 : mp)
82 : {
83 0 : vpe_api_main_t *am = &vpe_api_main;
84 0 : l2t_main_t *lm = &l2t_main;
85 : vl_api_registration_t *reg;
86 : l2t_session_t *session;
87 :
88 0 : reg = vl_api_client_index_to_registration (mp->client_index);
89 0 : if (!reg)
90 0 : return;
91 :
92 : /* *INDENT-OFF* */
93 0 : pool_foreach (session, lm->sessions)
94 : {
95 0 : send_sw_if_l2tpv3_tunnel_details (am, reg, session, lm, mp->context);
96 : }
97 : /* *INDENT-ON* */
98 : }
99 :
100 1 : static void vl_api_l2tpv3_create_tunnel_t_handler
101 : (vl_api_l2tpv3_create_tunnel_t * mp)
102 : {
103 : vl_api_l2tpv3_create_tunnel_reply_t *rmp;
104 1 : l2t_main_t *lm = &l2t_main;
105 1 : u32 sw_if_index = (u32) ~ 0;
106 : int rv;
107 : ip46_address_t client, our;
108 :
109 1 : if (mp->our_address.af == ADDRESS_IP4)
110 : {
111 0 : rv = VNET_API_ERROR_UNIMPLEMENTED;
112 0 : goto out;
113 : }
114 :
115 : u32 encap_fib_index;
116 :
117 1 : if (mp->encap_vrf_id != ~0)
118 : {
119 : uword *p;
120 1 : ip6_main_t *im = &ip6_main;
121 1 : if (!
122 : (p =
123 1 : hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id))))
124 : {
125 0 : rv = VNET_API_ERROR_NO_SUCH_FIB;
126 0 : goto out;
127 : }
128 1 : encap_fib_index = p[0];
129 : }
130 : else
131 : {
132 0 : encap_fib_index = ~0;
133 : }
134 :
135 1 : ip_address_decode (&mp->client_address, &client);
136 1 : ip_address_decode (&mp->our_address, &our);
137 :
138 1 : rv = create_l2tpv3_ipv6_tunnel (lm,
139 : &client.ip6,
140 : &our.ip6,
141 : ntohl (mp->local_session_id),
142 : ntohl (mp->remote_session_id),
143 : clib_net_to_host_u64 (mp->local_cookie),
144 : clib_net_to_host_u64 (mp->remote_cookie),
145 1 : mp->l2_sublayer_present,
146 : encap_fib_index, &sw_if_index);
147 :
148 1 : out:
149 : /* *INDENT-OFF* */
150 1 : REPLY_MACRO2(VL_API_L2TPV3_CREATE_TUNNEL_REPLY,
151 : ({
152 : rmp->sw_if_index = ntohl (sw_if_index);
153 : }));
154 : /* *INDENT-ON* */
155 : }
156 :
157 0 : static void vl_api_l2tpv3_set_tunnel_cookies_t_handler
158 : (vl_api_l2tpv3_set_tunnel_cookies_t * mp)
159 : {
160 : vl_api_l2tpv3_set_tunnel_cookies_reply_t *rmp;
161 0 : l2t_main_t *lm = &l2t_main;
162 : int rv;
163 :
164 0 : VALIDATE_SW_IF_INDEX (mp);
165 :
166 0 : rv = l2tpv3_set_tunnel_cookies (lm, ntohl (mp->sw_if_index),
167 : clib_net_to_host_u64 (mp->new_local_cookie),
168 : clib_net_to_host_u64
169 : (mp->new_remote_cookie));
170 :
171 0 : BAD_SW_IF_INDEX_LABEL;
172 :
173 0 : REPLY_MACRO (VL_API_L2TPV3_SET_TUNNEL_COOKIES_REPLY);
174 : }
175 :
176 0 : static void vl_api_l2tpv3_interface_enable_disable_t_handler
177 : (vl_api_l2tpv3_interface_enable_disable_t * mp)
178 : {
179 : int rv;
180 0 : vnet_main_t *vnm = vnet_get_main ();
181 : vl_api_l2tpv3_interface_enable_disable_reply_t *rmp;
182 :
183 0 : VALIDATE_SW_IF_INDEX (mp);
184 :
185 0 : rv = l2tpv3_interface_enable_disable
186 0 : (vnm, ntohl (mp->sw_if_index), mp->enable_disable);
187 :
188 0 : BAD_SW_IF_INDEX_LABEL;
189 :
190 0 : REPLY_MACRO (VL_API_L2TPV3_INTERFACE_ENABLE_DISABLE_REPLY);
191 : }
192 :
193 0 : static void vl_api_l2tpv3_set_lookup_key_t_handler
194 : (vl_api_l2tpv3_set_lookup_key_t * mp)
195 : {
196 0 : int rv = 0;
197 0 : l2t_main_t *lm = &l2t_main;
198 : vl_api_l2tpv3_set_lookup_key_reply_t *rmp;
199 :
200 0 : if (mp->key > L2T_LOOKUP_KEY_API_SESSION_ID)
201 : {
202 0 : rv = VNET_API_ERROR_INVALID_VALUE;
203 0 : goto out;
204 : }
205 :
206 0 : lm->lookup_type = (ip6_to_l2_lookup_t) mp->key;
207 :
208 0 : out:
209 0 : REPLY_MACRO (VL_API_L2TPV3_SET_LOOKUP_KEY_REPLY);
210 : }
211 :
212 : /*
213 : * l2tp_api_hookup
214 : * Add vpe's API message handlers to the table.
215 : * vlib has already mapped shared memory and
216 : * added the client registration handlers.
217 : * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
218 : */
219 : #include <l2tp/l2tp.api.c>
220 :
221 : static clib_error_t *
222 559 : l2tp_api_hookup (vlib_main_t * vm)
223 : {
224 : /*
225 : * Set up the (msg_name, crc, message-id) table
226 : */
227 559 : l2tp_base_msg_id = setup_message_id_table ();
228 :
229 559 : return 0;
230 : }
231 :
232 1119 : VLIB_API_INIT_FUNCTION (l2tp_api_hookup);
233 :
234 : #include <vlib/unix/plugin.h>
235 : #include <vpp/app/version.h>
236 :
237 : /* *INDENT-OFF* */
238 : VLIB_PLUGIN_REGISTER () = {
239 : .version = VPP_BUILD_VER,
240 : .description = "Layer 2 Tunneling Protocol v3 (L2TP)",
241 : };
242 : /* *INDENT-ON* */
243 :
244 :
245 : /*
246 : * fd.io coding-style-patch-verification: ON
247 : *
248 : * Local Variables:
249 : * eval: (c-set-style "gnu")
250 : * End:
251 : */
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