FD.io VPP  v20.05-21-gb1500e9ff
Vector Packet Processing
vxlan_gpe_api.c
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1 /*
2  *------------------------------------------------------------------
3  * vxlan_gpe_api.c - vxlan_gpe 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 <vnet/feature/feature.h>
27 #include <vnet/fib/fib_table.h>
28 
29 #include <vnet/ip/ip_types_api.h>
30 
31 #include <vnet/vnet_msg_enum.h>
32 
33 #define vl_typedefs /* define message structures */
34 #include <vnet/vnet_all_api_h.h>
35 #undef vl_typedefs
36 
37 #define vl_endianfun /* define message structures */
38 #include <vnet/vnet_all_api_h.h>
39 #undef vl_endianfun
40 
41 /* instantiate all the print functions we know about */
42 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
43 #define vl_printfun
44 #include <vnet/vnet_all_api_h.h>
45 #undef vl_printfun
46 
48 
49 #define foreach_vpe_api_msg \
50 _(SW_INTERFACE_SET_VXLAN_GPE_BYPASS, sw_interface_set_vxlan_gpe_bypass) \
51 _(VXLAN_GPE_ADD_DEL_TUNNEL, vxlan_gpe_add_del_tunnel) \
52 _(VXLAN_GPE_TUNNEL_DUMP, vxlan_gpe_tunnel_dump)
53 
54 static void
57 {
58  vl_api_sw_interface_set_vxlan_gpe_bypass_reply_t *rmp;
59  int rv = 0;
60  u32 sw_if_index = ntohl (mp->sw_if_index);
61 
63 
64  vnet_int_vxlan_gpe_bypass_mode (sw_if_index, mp->is_ipv6, mp->enable);
66 
67  REPLY_MACRO (VL_API_SW_INTERFACE_SET_VXLAN_GPE_BYPASS_REPLY);
68 }
69 
70 static void
73 {
75  int rv = 0;
77  u32 encap_fib_index, decap_fib_index;
78  u8 protocol;
79  uword *p;
80  ip4_main_t *im = &ip4_main;
81  u32 sw_if_index = ~0;
82 
83  p = hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id));
84  if (!p)
85  {
86  rv = VNET_API_ERROR_NO_SUCH_FIB;
87  goto out;
88  }
89  encap_fib_index = p[0];
90 
91  protocol = mp->protocol;
92 
93  /* Interpret decap_vrf_id as an opaque if sending to other-than-ip4-input */
94  if (protocol == VXLAN_GPE_INPUT_NEXT_IP4_INPUT)
95  {
96  p = hash_get (im->fib_index_by_table_id, ntohl (mp->decap_vrf_id));
97  if (!p)
98  {
99  rv = VNET_API_ERROR_NO_SUCH_INNER_FIB;
100  goto out;
101  }
102  decap_fib_index = p[0];
103  }
104  else
105  {
106  decap_fib_index = ntohl (mp->decap_vrf_id);
107  }
108 
109 
110  clib_memset (a, 0, sizeof (*a));
111 
112  a->is_add = mp->is_add;
113  ip_address_decode (&mp->local, &a->local);
114  ip_address_decode (&mp->remote, &a->remote);
115 
116  /* Check src & dst are different */
117  if (ip46_address_is_equal (&a->local, &a->remote))
118  {
119  rv = VNET_API_ERROR_SAME_SRC_DST;
120  goto out;
121  }
122 
123  a->is_ip6 = !ip46_address_is_ip4 (&a->local);
124  a->mcast_sw_if_index = ntohl (mp->mcast_sw_if_index);
125  a->encap_fib_index = encap_fib_index;
126  a->decap_fib_index = decap_fib_index;
127  a->protocol = protocol;
128  a->vni = ntohl (mp->vni);
129  rv = vnet_vxlan_gpe_add_del_tunnel (a, &sw_if_index);
130 
131 out:
132  /* *INDENT-OFF* */
133  REPLY_MACRO2(VL_API_VXLAN_GPE_ADD_DEL_TUNNEL_REPLY,
134  ({
135  rmp->sw_if_index = ntohl (sw_if_index);
136  }));
137  /* *INDENT-ON* */
138 }
139 
142 {
144  ip4_main_t *im4 = &ip4_main;
145  ip6_main_t *im6 = &ip6_main;
147 
148  rmp = vl_msg_api_alloc (sizeof (*rmp));
149  clib_memset (rmp, 0, sizeof (*rmp));
150  rmp->_vl_msg_id = ntohs (VL_API_VXLAN_GPE_TUNNEL_DETAILS);
151 
153  &rmp->local);
154  ip_address_encode (&t->remote, is_ipv6 ? IP46_TYPE_IP6 : IP46_TYPE_IP4,
155  &rmp->remote);
156 
157  if (ip46_address_is_ip4 (&t->local))
158  {
159  rmp->encap_vrf_id = htonl (im4->fibs[t->encap_fib_index].ft_table_id);
160  rmp->decap_vrf_id = htonl (im4->fibs[t->decap_fib_index].ft_table_id);
161  }
162  else
163  {
164  rmp->encap_vrf_id = htonl (im6->fibs[t->encap_fib_index].ft_table_id);
165  rmp->decap_vrf_id = htonl (im6->fibs[t->decap_fib_index].ft_table_id);
166  }
167  rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index);
168  rmp->vni = htonl (t->vni);
169  rmp->protocol = t->protocol;
170  rmp->sw_if_index = htonl (t->sw_if_index);
171  rmp->context = context;
172 
173  vl_api_send_msg (reg, (u8 *) rmp);
174 }
175 
178 {
183 
185  if (!reg)
186  return;
187 
188  sw_if_index = ntohl (mp->sw_if_index);
189 
190  if (~0 == sw_if_index)
191  {
192  /* *INDENT-OFF* */
193  pool_foreach (t, vgm->tunnels,
194  ({
195  send_vxlan_gpe_tunnel_details(t, reg, mp->context);
196  }));
197  /* *INDENT-ON* */
198  }
199  else
200  {
201  if ((sw_if_index >= vec_len (vgm->tunnel_index_by_sw_if_index)) ||
202  (~0 == vgm->tunnel_index_by_sw_if_index[sw_if_index]))
203  {
204  return;
205  }
208  }
209 }
210 
211 
212 /*
213  * vpe_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 #define vl_msg_name_crc_list
220 #include <vnet/vnet_all_api_h.h>
221 #undef vl_msg_name_crc_list
222 
223 static void
225 {
226 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
227  foreach_vl_msg_name_crc_vxlan_gpe;
228 #undef _
229 }
230 
231 static clib_error_t *
233 {
234  api_main_t *am = vlibapi_get_main ();
235 
236 #define _(N,n) \
237  vl_msg_api_set_handlers(VL_API_##N, #n, \
238  vl_api_##n##_t_handler, \
239  vl_noop_handler, \
240  vl_api_##n##_t_endian, \
241  vl_api_##n##_t_print, \
242  sizeof(vl_api_##n##_t), 1);
244 #undef _
245 
246  am->api_trace_cfg[VL_API_VXLAN_GPE_ADD_DEL_TUNNEL].size +=
247  17 * sizeof (u32);
248 
249  /*
250  * Set up the (msg_name, crc, message-id) table
251  */
253 
254  return 0;
255 }
256 
258 
259 /*
260  * fd.io coding-style-patch-verification: ON
261  *
262  * Local Variables:
263  * eval: (c-set-style "gnu")
264  * End:
265  */
static void vl_api_sw_interface_set_vxlan_gpe_bypass_t_handler(vl_api_sw_interface_set_vxlan_gpe_bypass_t *mp)
Definition: vxlan_gpe_api.c:56
u32 flags
flags
Definition: vxlan_gpe.h:138
a
Definition: bitmap.h:538
int size
for sanity checking
Definition: api_common.h:83
vl_api_interface_index_t sw_if_index
Definition: vxlan_gpe.api:46
#define REPLY_MACRO2(t, body)
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
u32 * tunnel_index_by_sw_if_index
Mapping from sw_if_index to tunnel index.
Definition: vxlan_gpe.h:216
static void vl_api_send_msg(vl_api_registration_t *rp, u8 *elem)
Definition: api.h:35
VXLAN GPE definitions.
int vnet_vxlan_gpe_add_del_tunnel(vnet_vxlan_gpe_add_del_tunnel_args_t *a, u32 *sw_if_indexp)
Add or Del a VXLAN GPE tunnel.
Definition: vxlan_gpe.c:441
vl_api_interface_index_t mcast_sw_if_index
Definition: vxlan_gpe.api:27
static u8 ip46_address_is_ip4(const ip46_address_t *ip46)
Definition: ip46_address.h:55
void * vl_msg_api_alloc(int nbytes)
vl_api_interface_index_t sw_if_index
Definition: vxlan_gpe.api:39
unsigned char u8
Definition: types.h:56
trace_cfg_t * api_trace_cfg
Current trace configuration.
Definition: api_common.h:273
static void send_vxlan_gpe_tunnel_details(vxlan_gpe_tunnel_t *t, vl_api_registration_t *reg, u32 context)
vl_api_ip_proto_t protocol
Definition: lb_types.api:71
static void vl_api_vxlan_gpe_add_del_tunnel_t_handler(vl_api_vxlan_gpe_add_del_tunnel_t *mp)
Definition: vxlan_gpe_api.c:72
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:513
vl_api_interface_index_t sw_if_index
Definition: gre.api:53
ip46_address_t local
tunnel local address
Definition: vxlan_gpe.h:117
unsigned int u32
Definition: types.h:88
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
void vnet_int_vxlan_gpe_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: vxlan_gpe.c:1026
#define hash_get(h, key)
Definition: hash.h:249
uword * fib_index_by_table_id
Hash table mapping table id to fib index.
Definition: ip4.h:132
Struct for VXLAN GPE tunnel.
Definition: vxlan_gpe.h:103
vxlan_gpe_main_t vxlan_gpe_main
Definition: vxlan_gpe.c:46
vl_api_interface_index_t mcast_sw_if_index
Definition: vxlan_gpe.api:57
#define REPLY_MACRO(t)
u8 protocol
encapsulated protocol
Definition: vxlan_gpe.h:112
ip6_main_t ip6_main
Definition: ip6_forward.c:2784
ip46_address_t remote
tunnel remote address
Definition: vxlan_gpe.h:119
vlib_main_t * vm
Definition: in2out_ed.c:1599
u32 vni
VXLAN GPE VNI in HOST byte order, shifted left 8 bits.
Definition: vxlan_gpe.h:130
static u8 ip46_address_is_equal(const ip46_address_t *ip46_1, const ip46_address_t *ip46_2)
Definition: ip46_address.h:93
API main structure, used by both vpp and binary API clients.
Definition: api_common.h:226
An API client registration, only in vpp/vlib.
Definition: api_common.h:47
#define BAD_SW_IF_INDEX_LABEL
Struct for VXLAN GPE add/del args.
Definition: vxlan_gpe.h:236
u32 ft_table_id
Table ID (hash key) for this FIB.
Definition: fib_table.h:92
static clib_error_t * vxlan_gpe_api_hookup(vlib_main_t *vm)
static vl_api_registration_t * vl_api_client_index_to_registration(u32 index)
Definition: api.h:57
static void setup_message_id_table(api_main_t *am)
Interface set vxlan-gpe-bypass request.
Definition: vxlan_gpe.api:70
Struct for VXLAN GPE node state.
Definition: vxlan_gpe.h:197
IPv4 main type.
Definition: ip4.h:106
vxlan_gpe_tunnel_t * tunnels
vector of encap tunnel instances
Definition: vxlan_gpe.h:200
u32 decap_fib_index
FIB indices - inner IP packet lookup here.
Definition: vxlan_gpe.h:127
VLIB_API_INIT_FUNCTION(vxlan_gpe_api_hookup)
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
static void vl_api_vxlan_gpe_tunnel_dump_t_handler(vl_api_vxlan_gpe_tunnel_dump_t *mp)
u64 uword
Definition: types.h:112
void ip_address_encode(const ip46_address_t *in, ip46_type_t type, vl_api_address_t *out)
Definition: ip_types_api.c:194
static api_main_t * vlibapi_get_main(void)
Definition: api_common.h:379
u32 encap_fib_index
FIB indices - tunnel partner lookup here.
Definition: vxlan_gpe.h:125
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:1144
u32 sw_if_index
vnet intfc sw_if_index
Definition: vxlan_gpe.h:135
struct fib_table_t_ * fibs
Vector of FIBs.
Definition: ip4.h:111
bool is_ipv6
Definition: dhcp.api:202
vl_api_interface_index_t sw_if_index
Definition: vxlan_gpe.api:74
#define VXLAN_GPE_TUNNEL_IS_IPV4
Flags for vxlan_gpe_tunnel_t.
Definition: vxlan_gpe.h:169
struct fib_table_t_ * fibs
Definition: ip6.h:184
#define foreach_vpe_api_msg
Definition: vxlan_gpe_api.c:49
vl_api_interface_index_t sw_if_index
Definition: vxlan_gpe.api:52
#define VALIDATE_SW_IF_INDEX(mp)