FD.io VPP  v17.10-9-gd594711
Vector Packet Processing
pppoe_api.c
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1 /*
2  *------------------------------------------------------------------
3  * pppoe_api.c - pppoe api
4  *
5  * Copyright (c) 2017 Intel 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/interface.h>
21 #include <vnet/api_errno.h>
22 #include <vnet/feature/feature.h>
23 #include <vnet/fib/fib_table.h>
24 
25 #include <vppinfra/byte_order.h>
26 #include <vlibmemory/api.h>
27 #include <vlibsocket/api.h>
28 
29 #include <pppoe/pppoe.h>
30 
31 
32 #define vl_msg_id(n,h) n,
33 typedef enum
34 {
35 #include <pppoe/pppoe.api.h>
36  /* We'll want to know how many messages IDs we need... */
38 } vl_msg_id_t;
39 #undef vl_msg_id
40 
41 /* define message structures */
42 #define vl_typedefs
43 #include <pppoe/pppoe.api.h>
44 #undef vl_typedefs
45 
46 /* define generated endian-swappers */
47 #define vl_endianfun
48 #include <pppoe/pppoe.api.h>
49 #undef vl_endianfun
50 
51 /* instantiate all the print functions we know about */
52 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
53 #define vl_printfun
54 #include <pppoe/pppoe.api.h>
55 #undef vl_printfun
56 
57 /* Get the API version number */
58 #define vl_api_version(n,v) static u32 api_version=(v);
59 #include <pppoe/pppoe.api.h>
60 #undef vl_api_version
61 
62 #define vl_msg_name_crc_list
63 #include <pppoe/pppoe.api.h>
64 #undef vl_msg_name_crc_list
65 
66 #define REPLY_MSG_ID_BASE pem->msg_id_base
68 
69 static void
71 {
72 #define _(id,n,crc) \
73  vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + pem->msg_id_base);
74  foreach_vl_msg_name_crc_pppoe;
75 #undef _
76 }
77 
78 #define foreach_pppoe_plugin_api_msg \
79 _(PPPOE_ADD_DEL_SESSION, pppoe_add_del_session) \
80 _(PPPOE_SESSION_DUMP, pppoe_session_dump)
81 
84 {
86  int rv = 0;
87  u32 decap_fib_index;
88  ip4_main_t *im = &ip4_main;
89  pppoe_main_t *pem = &pppoe_main;
90 
91  uword *p = hash_get (im->fib_index_by_table_id, ntohl (mp->decap_vrf_id));
92  if (!p)
93  {
94  rv = VNET_API_ERROR_NO_SUCH_INNER_FIB;
95  goto out;
96  }
97  decap_fib_index = p[0];
98 
100  .is_add = mp->is_add,
101  .is_ip6 = mp->is_ipv6,
102  .decap_fib_index = decap_fib_index,
103  .session_id = ntohs (mp->session_id),
104  .client_ip = to_ip46 (mp->is_ipv6, mp->client_ip),
105  };
106  clib_memcpy (a.client_mac, mp->client_mac, 6);
107 
108  u32 sw_if_index = ~0;
109  rv = vnet_pppoe_add_del_session (&a, &sw_if_index);
110 
111 out:
112  /* *INDENT-OFF* */
113  REPLY_MACRO2(VL_API_PPPOE_ADD_DEL_SESSION_REPLY,
114  ({
115  rmp->sw_if_index = ntohl (sw_if_index);
116  }));
117  /* *INDENT-ON* */
118 }
119 
120 static void send_pppoe_session_details
122 {
124  ip4_main_t *im4 = &ip4_main;
125  ip6_main_t *im6 = &ip6_main;
126  u8 is_ipv6 = !ip46_address_is_ip4 (&t->client_ip);
127 
128  rmp = vl_msg_api_alloc (sizeof (*rmp));
129  memset (rmp, 0, sizeof (*rmp));
130  rmp->_vl_msg_id = ntohs (VL_API_PPPOE_SESSION_DETAILS);
131  if (is_ipv6)
132  {
133  memcpy (rmp->client_ip, t->client_ip.ip6.as_u8, 16);
134  rmp->decap_vrf_id = htonl (im6->fibs[t->decap_fib_index].ft_table_id);
135  }
136  else
137  {
138  memcpy (rmp->client_ip, t->client_ip.ip4.as_u8, 4);
139  rmp->decap_vrf_id = htonl (im4->fibs[t->decap_fib_index].ft_table_id);
140  }
141  rmp->session_id = htons (t->session_id);
142  rmp->encap_if_index = htonl (t->encap_if_index);
143  clib_memcpy (rmp->local_mac, t->local_mac, 6);
144  clib_memcpy (rmp->client_mac, t->client_mac, 6);
145  rmp->sw_if_index = htonl (t->sw_if_index);
146  rmp->is_ipv6 = is_ipv6;
147  rmp->context = context;
148 
149  vl_msg_api_send_shmem (q, (u8 *) & rmp);
150 }
151 
152 static void
154 {
156  pppoe_main_t *pem = &pppoe_main;
157  pppoe_session_t *t;
158  u32 sw_if_index;
159 
161  if (q == 0)
162  {
163  return;
164  }
165 
166  sw_if_index = ntohl (mp->sw_if_index);
167 
168  if (~0 == sw_if_index)
169  {
170  /* *INDENT-OFF* */
171  pool_foreach (t, pem->sessions,
172  ({
173  send_pppoe_session_details(t, q, mp->context);
174  }));
175  /* *INDENT-ON* */
176  }
177  else
178  {
179  if ((sw_if_index >= vec_len (pem->session_index_by_sw_if_index)) ||
180  (~0 == pem->session_index_by_sw_if_index[sw_if_index]))
181  {
182  return;
183  }
184  t = &pem->sessions[pem->session_index_by_sw_if_index[sw_if_index]];
186  }
187 }
188 
189 
190 static clib_error_t *
192 {
193  pppoe_main_t *pem = &pppoe_main;
194 
195  u8 *name = format (0, "pppoe_%08x%c", api_version, 0);
197  ((char *) name, VL_MSG_FIRST_AVAILABLE);
198 
199 #define _(N,n) \
200  vl_msg_api_set_handlers((VL_API_##N + pem->msg_id_base), \
201  #n, \
202  vl_api_##n##_t_handler, \
203  vl_noop_handler, \
204  vl_api_##n##_t_endian, \
205  vl_api_##n##_t_print, \
206  sizeof(vl_api_##n##_t), 1);
208 #undef _
209 
210  /* Add our API messages to the global name_crc hash table */
212 
213  return 0;
214 }
215 
217 
218 /*
219  * fd.io coding-style-patch-verification: ON
220  *
221  * Local Variables:
222  * eval: (c-set-style "gnu")
223  * End:
224  */
u16 vl_msg_api_get_msg_ids(const char *name, int n)
Definition: api_shared.c:857
pppoe_main_t pppoe_main
Definition: jvpp_pppoe.h:39
a
Definition: bitmap.h:516
u32 encap_if_index
Definition: pppoe.h:58
u16 session_id
Definition: pppoe.h:52
#define REPLY_MACRO2(t, body)
u16 msg_id_base
Definition: pppoe.h:166
Set or delete an PPPOE session.
Definition: pppoe.api:26
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
static clib_error_t * pppoe_api_hookup(vlib_main_t *vm)
Definition: pppoe_api.c:191
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:437
void * vl_msg_api_alloc(int nbytes)
Dump PPPOE session.
Definition: pppoe.api:55
#define hash_get(h, key)
Definition: hash.h:248
uword * fib_index_by_table_id
Hash table mapping table id to fib index.
Definition: ip4.h:121
ip46_address_t client_ip
Definition: pppoe.h:55
API main structure, used by both vpp and binary API clients.
Definition: api_common.h:182
#define ip46_address_is_ip4(ip46)
Definition: ip6_packet.h:76
api_main_t api_main
Definition: api_shared.c:35
u32 ft_table_id
Table ID (hash key) for this FIB.
Definition: fib_table.h:50
vlib_main_t * vm
Definition: buffer.c:283
#define clib_memcpy(a, b, c)
Definition: string.h:69
unix_shared_memory_queue_t * vl_api_client_index_to_input_queue(u32 index)
static void vl_api_pppoe_session_dump_t_handler(vl_api_pppoe_session_dump_t *mp)
Definition: pppoe_api.c:153
pppoe_session_t * sessions
Definition: pppoe.h:151
dump details of an PPPOE session
Definition: pppoe.api:73
static ip46_address_t to_ip46(u32 is_ipv6, u8 *buf)
Definition: ip6_packet.h:86
void vl_msg_api_send_shmem(unix_shared_memory_queue_t *q, u8 *elem)
unsigned int u32
Definition: types.h:88
static void setup_message_id_table(pppoe_main_t *pem, api_main_t *am)
Definition: pppoe_api.c:70
ip6_main_t ip6_main
Definition: ip6_forward.c:3043
IPv4 main type.
Definition: ip4.h:95
u32 sw_if_index
Definition: pppoe.h:67
vl_msg_id_t
Definition: pppoe_api.c:33
u8 client_mac[6]
Definition: pppoe.h:64
u32 * session_index_by_sw_if_index
Definition: pppoe.h:160
u64 uword
Definition: types.h:112
int vnet_pppoe_add_del_session(vnet_pppoe_add_del_session_args_t *a, u32 *sw_if_indexp)
Definition: pppoe.c:248
#define foreach_pppoe_plugin_api_msg
Definition: pppoe_api.c:78
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
unsigned char u8
Definition: types.h:56
u32 decap_fib_index
FIB indices - inner IP packet lookup here.
Definition: pppoe.h:61
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:1175
struct fib_table_t_ * fibs
Vector of FIBs.
Definition: ip4.h:100
u8 local_mac[6]
Definition: pppoe.h:63
reply for set or delete an PPPOE session
Definition: pppoe.api:43
VLIB_API_INIT_FUNCTION(pppoe_api_hookup)
struct fib_table_t_ * fibs
Definition: ip6.h:161
struct _unix_shared_memory_queue unix_shared_memory_queue_t
static void send_pppoe_session_details(pppoe_session_t *t, unix_shared_memory_queue_t *q, u32 context)
Definition: pppoe_api.c:121
static void vl_api_pppoe_add_del_session_t_handler(vl_api_pppoe_add_del_session_t *mp)
Definition: pppoe_api.c:83