FD.io VPP  v19.04.4-rc0-5-ge88582fac
Vector Packet Processing
ipsec_gre_api.c
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1 /*
2  *------------------------------------------------------------------
3  * ipsec_gre_api.c - ipsec_gre 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>
26 #include <vnet/ip/ip_types_api.h>
27 
28 #include <vnet/vnet_msg_enum.h>
29 
30 #define vl_typedefs /* define message structures */
31 #include <vnet/vnet_all_api_h.h>
32 #undef vl_typedefs
33 
34 #define vl_endianfun /* define message structures */
35 #include <vnet/vnet_all_api_h.h>
36 #undef vl_endianfun
37 
38 /* instantiate all the print functions we know about */
39 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
40 #define vl_printfun
41 #include <vnet/vnet_all_api_h.h>
42 #undef vl_printfun
43 
45 
46 #define foreach_vpe_api_msg \
47 _(IPSEC_GRE_TUNNEL_ADD_DEL, ipsec_gre_tunnel_add_del) \
48 _(IPSEC_GRE_TUNNEL_DUMP, ipsec_gre_tunnel_dump)
49 
50 static void
52  mp)
53 {
55  int rv = 0;
57  u32 sw_if_index = ~0;
58 
59  clib_memset (a, 0, sizeof (*a));
60 
61  ip4_address_decode (mp->tunnel.src, &a->src);
62  ip4_address_decode (mp->tunnel.dst, &a->dst);
63 
64  /* Check src & dst are different */
65  if (a->src.as_u32 == a->dst.as_u32)
66  {
67  rv = VNET_API_ERROR_SAME_SRC_DST;
68  goto out;
69  }
70 
71  a->is_add = mp->is_add;
72  a->local_sa_id = ntohl (mp->tunnel.local_sa_id);
73  a->remote_sa_id = ntohl (mp->tunnel.remote_sa_id);
74 
75  rv = vnet_ipsec_gre_tunnel_add_del (a, &sw_if_index);
76 
77 out:
78  /* *INDENT-OFF* */
79  REPLY_MACRO2(VL_API_GRE_ADD_DEL_TUNNEL_REPLY,
80  ({
81  rmp->sw_if_index = ntohl (sw_if_index);
82  }));
83  /* *INDENT-ON* */
84 }
85 
88 {
90 
91  rmp = vl_msg_api_alloc (sizeof (*rmp));
92  clib_memset (rmp, 0, sizeof (*rmp));
93  rmp->_vl_msg_id = ntohs (VL_API_IPSEC_GRE_TUNNEL_DETAILS);
94 
95  ip4_address_encode (&t->tunnel_src, rmp->tunnel.src);
96  ip4_address_encode (&t->tunnel_dst, rmp->tunnel.dst);
97  rmp->tunnel.sw_if_index = htonl (t->sw_if_index);
98  rmp->tunnel.local_sa_id = htonl (t->local_sa_id);
99  rmp->tunnel.remote_sa_id = htonl (t->remote_sa_id);
100  rmp->context = context;
101 
102  vl_api_send_msg (reg, (u8 *) rmp);
103 }
104 
107 {
112 
114  if (!reg)
115  return;
116 
117  sw_if_index = ntohl (mp->sw_if_index);
118 
119  if (~0 == sw_if_index)
120  {
121  /* *INDENT-OFF* */
122  pool_foreach (t, igm->tunnels,
123  ({
124  send_ipsec_gre_tunnel_details(t, reg, mp->context);
125  }));
126  /* *INDENT-ON* */
127  }
128  else
129  {
130  if ((sw_if_index >= vec_len (igm->tunnel_index_by_sw_if_index)) ||
131  (~0 == igm->tunnel_index_by_sw_if_index[sw_if_index]))
132  {
133  return;
134  }
137  }
138 }
139 
140 /*
141  * ipsec_gre_api_hookup
142  * Add vpe's API message handlers to the table.
143  * vlib has already mapped shared memory and
144  * added the client registration handlers.
145  * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
146  */
147 #define vl_msg_name_crc_list
148 #include <vnet/vnet_all_api_h.h>
149 #undef vl_msg_name_crc_list
150 
151 static void
153 {
154 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
155  foreach_vl_msg_name_crc_ipsec_gre;
156 #undef _
157 }
158 
159 static clib_error_t *
161 {
162  api_main_t *am = &api_main;
163 
164 #define _(N,n) \
165  vl_msg_api_set_handlers(VL_API_##N, #n, \
166  vl_api_##n##_t_handler, \
167  vl_noop_handler, \
168  vl_api_##n##_t_endian, \
169  vl_api_##n##_t_print, \
170  sizeof(vl_api_##n##_t), 1);
172 #undef _
173 
174  /*
175  * Set up the (msg_name, crc, message-id) table
176  */
178 
179  return 0;
180 }
181 
183 
184 /*
185  * fd.io coding-style-patch-verification: ON
186  *
187  * Local Variables:
188  * eval: (c-set-style "gnu")
189  * End:
190  */
u32 sw_if_index
Definition: ipsec_gre.api:37
ip4_address_t tunnel_dst
tunnel IPv4 dst address
Definition: ipsec_gre.h:57
a
Definition: bitmap.h:538
vl_api_ipsec_gre_tunnel_t tunnel
Definition: ipsec_gre.api:80
L2-GRE over IPSec packet processing.
#define REPLY_MACRO2(t, body)
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
static void vl_api_send_msg(vl_api_registration_t *rp, u8 *elem)
Definition: api.h:34
VLIB_API_INIT_FUNCTION(ipsec_gre_api_hookup)
void * vl_msg_api_alloc(int nbytes)
int vnet_ipsec_gre_tunnel_add_del(const ipsec_gre_tunnel_add_del_args_t *a, u32 *sw_if_indexp)
Add or delete ipsec-gre tunnel interface.
Definition: interface.c:94
unsigned char u8
Definition: types.h:56
Dump ipsec gre tunnel table.
Definition: ipsec_gre.api:65
ipsec_gre_tunnel_t * tunnels
pool of tunnel instances
Definition: ipsec_gre.h:72
static void vl_api_ipsec_gre_tunnel_add_del_t_handler(vl_api_ipsec_gre_tunnel_add_del_t *mp)
Definition: ipsec_gre_api.c:51
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:493
ipsec_gre_main_t ipsec_gre_main
Definition: ipsec_gre.c:28
static void setup_message_id_table(api_main_t *am)
unsigned int u32
Definition: types.h:88
u32 sw_if_index
hardware interface index
Definition: ipsec_gre.h:62
u32 remote_sa_id
remote IPSec SA id
Definition: ipsec_gre.h:61
static void vl_api_ipsec_gre_tunnel_dump_t_handler(vl_api_ipsec_gre_tunnel_dump_t *mp)
static clib_error_t * ipsec_gre_api_hookup(vlib_main_t *vm)
Reply for add / del ipsec gre tunnel request.
Definition: ipsec_gre.api:54
ipsec gre tunnel operational state response
Definition: ipsec_gre.api:78
API main structure, used by both vpp and binary API clients.
Definition: api_common.h:202
An API client registration, only in vpp/vlib.
Definition: api_common.h:45
u32 * tunnel_index_by_sw_if_index
mapping from sw_if_index to tunnel index
Definition: ipsec_gre.h:78
vlib_main_t * vm
Definition: buffer.c:312
static void send_ipsec_gre_tunnel_details(ipsec_gre_tunnel_t *t, vl_api_registration_t *reg, u32 context)
Definition: ipsec_gre_api.c:87
u32 context
Definition: ipsec_gre.api:33
IPSec-GRE state.
Definition: ipsec_gre.h:70
static vl_api_registration_t * vl_api_client_index_to_registration(u32 index)
Definition: api.h:56
vl_api_ipsec_gre_tunnel_t tunnel
Definition: ipsec_gre.api:46
#define foreach_vpe_api_msg
Definition: ipsec_gre_api.c:46
IPSec-GRE tunnel parameters.
Definition: ipsec_gre.h:52
u32 local_sa_id
local IPSec SA id
Definition: ipsec_gre.h:60
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
void ip4_address_decode(const vl_api_ip4_address_t in, ip4_address_t *out)
Definition: ip_types_api.c:51
void ip4_address_encode(const ip4_address_t *in, vl_api_ip4_address_t out)
Definition: ip_types_api.c:45
api_main_t api_main
Definition: api_shared.c:35
ip4_address_t tunnel_src
tunnel IPv4 src address
Definition: ipsec_gre.h:56