FD.io VPP  v20.05.1-6-gf53edbc3b
Vector Packet Processing
gtpu_api.c
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1 /*
2  *------------------------------------------------------------------
3  * gtpu_api.c - gtpu 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 <vnet/ip/ip_types_api.h>
28 #include <gtpu/gtpu.h>
29 
30 #include <vnet/format_fns.h>
31 #include <gtpu/gtpu.api_enum.h>
32 #include <gtpu/gtpu.api_types.h>
33 
34 #define REPLY_MSG_ID_BASE gtm->msg_id_base
36 
37 static void
39 {
40  vl_api_gtpu_offload_rx_reply_t *rmp;
41  int rv = 0;
42  vl_api_interface_index_t hw_if_index = ntohl (mp->hw_if_index);
43  vl_api_interface_index_t sw_if_index = ntohl (mp->sw_if_index);
44 
45  if (!vnet_hw_interface_is_valid (vnet_get_main (), hw_if_index))
46  {
47  rv = VNET_API_ERROR_NO_SUCH_ENTRY;
48  goto err;
49  }
51 
52  u32 t_index = vnet_gtpu_get_tunnel_index (sw_if_index);
53  if (t_index == ~0)
54  {
55  rv = VNET_API_ERROR_INVALID_SW_IF_INDEX_2;
56  goto err;
57  }
58 
59  gtpu_main_t *gtm = &gtpu_main;
60  gtpu_tunnel_t *t = pool_elt_at_index (gtm->tunnels, t_index);
61  if (!ip46_address_is_ip4 (&t->dst))
62  {
63  rv = VNET_API_ERROR_INVALID_ADDRESS_FAMILY;
64  goto err;
65  }
66 
67  if ((t->decap_next_index != GTPU_INPUT_NEXT_IP4_INPUT) &&
68  (t->decap_next_index != GTPU_INPUT_NEXT_IP6_INPUT))
69  {
70  rv = VNET_API_ERROR_INVALID_ADDRESS_FAMILY;
71  goto err;
72  }
73 
74  vnet_main_t *vnm = vnet_get_main ();
75  vnet_hw_interface_t *hw_if = vnet_get_hw_interface (vnm, hw_if_index);
76  ip4_main_t *im = &ip4_main;
77  u32 rx_fib_index =
79 
80  if (t->encap_fib_index != rx_fib_index)
81  {
82  rv = VNET_API_ERROR_NO_SUCH_FIB;
83  goto err;
84  }
85 
86  if (vnet_gtpu_add_del_rx_flow (hw_if_index, t_index, mp->enable))
87  {
88  rv = VNET_API_ERROR_UNSPECIFIED;
89  goto err;
90  }
92 err:
93 
94  REPLY_MACRO (VL_API_GTPU_OFFLOAD_RX_REPLY);
95 }
96 
97 static void
100 {
101  vl_api_sw_interface_set_gtpu_bypass_reply_t *rmp;
102  int rv = 0;
103  u32 sw_if_index = ntohl (mp->sw_if_index);
104  gtpu_main_t *gtm = &gtpu_main;
105 
107 
108  vnet_int_gtpu_bypass_mode (sw_if_index, mp->is_ipv6, mp->enable);
110 
111  REPLY_MACRO (VL_API_SW_INTERFACE_SET_GTPU_BYPASS_REPLY);
112 }
113 
116 {
118  int rv = 0;
119  ip4_main_t *im = &ip4_main;
120  gtpu_main_t *gtm = &gtpu_main;
121 
122  uword *p = hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id));
123  if (!p)
124  {
125  rv = VNET_API_ERROR_NO_SUCH_FIB;
126  goto out;
127  }
128 
130  .is_add = mp->is_add,
131  .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index),
132  .encap_fib_index = p[0],
133  .decap_next_index = ntohl (mp->decap_next_index),
134  .teid = ntohl (mp->teid),
135  };
136  ip_address_decode (&mp->dst_address, &a.dst);
137  ip_address_decode (&mp->src_address, &a.src);
138 
139  /* Check src & dst are different */
140  if (ip46_address_cmp (&a.dst, &a.src) == 0)
141  {
142  rv = VNET_API_ERROR_SAME_SRC_DST;
143  goto out;
144  }
145  if (ip46_address_is_multicast (&a.dst) &&
147  {
148  rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
149  goto out;
150  }
151 
152  u32 sw_if_index = ~0;
153  rv = vnet_gtpu_add_del_tunnel (&a, &sw_if_index);
154 
155 out:
156  /* *INDENT-OFF* */
157  REPLY_MACRO2(VL_API_GTPU_ADD_DEL_TUNNEL_REPLY,
158  ({
159  rmp->sw_if_index = ntohl (sw_if_index);
160  }));
161  /* *INDENT-ON* */
162 }
163 
164 static void send_gtpu_tunnel_details
166 {
168  gtpu_main_t *gtm = &gtpu_main;
169  ip4_main_t *im4 = &ip4_main;
170  ip6_main_t *im6 = &ip6_main;
172 
173  rmp = vl_msg_api_alloc (sizeof (*rmp));
174  clib_memset (rmp, 0, sizeof (*rmp));
175  rmp->_vl_msg_id = ntohs (VL_API_GTPU_TUNNEL_DETAILS + gtm->msg_id_base);
176 
178  &rmp->src_address);
179  ip_address_encode (&t->dst, is_ipv6 ? IP46_TYPE_IP6 : IP46_TYPE_IP4,
180  &rmp->dst_address);
181 
182  rmp->encap_vrf_id =
183  is_ipv6 ? htonl (im6->fibs[t->encap_fib_index].ft_table_id) :
184  htonl (im4->fibs[t->encap_fib_index].ft_table_id);
185  rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index);
186  rmp->teid = htonl (t->teid);
187  rmp->decap_next_index = htonl (t->decap_next_index);
188  rmp->sw_if_index = htonl (t->sw_if_index);
189  rmp->context = context;
190 
191  vl_api_send_msg (reg, (u8 *) rmp);
192 }
193 
194 static void
196 {
198  gtpu_main_t *gtm = &gtpu_main;
199  gtpu_tunnel_t *t;
201 
203  if (!reg)
204  return;
205 
206  sw_if_index = ntohl (mp->sw_if_index);
207 
208  if (~0 == sw_if_index)
209  {
210  /* *INDENT-OFF* */
211  pool_foreach (t, gtm->tunnels,
212  ({
213  send_gtpu_tunnel_details(t, reg, mp->context);
214  }));
215  /* *INDENT-ON* */
216  }
217  else
218  {
219  if ((sw_if_index >= vec_len (gtm->tunnel_index_by_sw_if_index)) ||
220  (~0 == gtm->tunnel_index_by_sw_if_index[sw_if_index]))
221  {
222  return;
223  }
225  send_gtpu_tunnel_details (t, reg, mp->context);
226  }
227 }
228 
229 #include <gtpu/gtpu.api.c>
230 static clib_error_t *
232 {
233  gtpu_main_t *gtm = &gtpu_main;
234 
236  return 0;
237 }
238 
240 
241 /*
242  * fd.io coding-style-patch-verification: ON
243  *
244  * Local Variables:
245  * eval: (c-set-style "gnu")
246  * End:
247  */
Offload gtpu rx request.
Definition: gtpu.api:116
vl_api_interface_index_t sw_if_index
Definition: gtpu.api:54
vl_api_address_t src_address
Definition: gtpu.api:36
vl_api_address_t src_address
Definition: gtpu.api:84
static uword ip46_address_is_multicast(const ip46_address_t *a)
Definition: ip46_address.h:154
a
Definition: bitmap.h:538
static void send_gtpu_tunnel_details(gtpu_tunnel_t *t, vl_api_registration_t *reg, u32 context)
Definition: gtpu_api.c:165
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
u32 teid
Definition: gtpu.h:139
u32 * tunnel_index_by_sw_if_index
Definition: gtpu.h:223
#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:35
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
u32 * fib_index_by_sw_if_index
Table index indexed by software interface.
Definition: ip4.h:122
u32 vnet_gtpu_get_tunnel_index(u32 sw_if_index)
Definition: gtpu.c:1122
static u8 ip46_address_is_ip4(const ip46_address_t *ip46)
Definition: ip46_address.h:55
void * vl_msg_api_alloc(int nbytes)
unsigned char u8
Definition: types.h:56
static void vl_api_sw_interface_set_gtpu_bypass_t_handler(vl_api_sw_interface_set_gtpu_bypass_t *mp)
Definition: gtpu_api.c:99
static clib_error_t * gtpu_api_hookup(vlib_main_t *vm)
Definition: gtpu_api.c:231
static void vl_api_gtpu_add_del_tunnel_t_handler(vl_api_gtpu_add_del_tunnel_t *mp)
Definition: gtpu_api.c:115
#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
int vnet_gtpu_add_del_tunnel(vnet_gtpu_add_del_tunnel_args_t *a, u32 *sw_if_indexp)
Definition: gtpu.c:351
ip46_address_t src
Definition: gtpu.h:142
u16 msg_id_base
Definition: gtpu.h:231
static int ip46_address_cmp(const ip46_address_t *ip46_1, const ip46_address_t *ip46_2)
Definition: ip46_address.h:80
reply for set or delete an GTPU tunnel
Definition: gtpu.api:50
unsigned int u32
Definition: types.h:88
gtpu_main_t gtpu_main
Definition: gtpu.c:36
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
vl_api_interface_index_t sw_if_index
Definition: gtpu.api:103
#define hash_get(h, key)
Definition: hash.h:249
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:534
uword * fib_index_by_table_id
Hash table mapping table id to fib index.
Definition: ip4.h:132
u32 decap_next_index
Definition: gtpu.h:149
vl_api_interface_index_t mcast_sw_if_index
Definition: gtpu.api:38
#define REPLY_MACRO(t)
ip6_main_t ip6_main
Definition: ip6_forward.c:2784
Interface set gtpu-bypass request.
Definition: gtpu.api:99
vlib_main_t * vm
Definition: in2out_ed.c:1599
ip46_address_t dst
Definition: gtpu.h:143
An API client registration, only in vpp/vlib.
Definition: api_common.h:47
#define BAD_SW_IF_INDEX_LABEL
static uword vnet_sw_if_index_is_api_valid(u32 sw_if_index)
vl_api_address_t dst_address
Definition: gtpu.api:85
u32 ft_table_id
Table ID (hash key) for this FIB.
Definition: fib_table.h:92
u32 sw_if_index
Definition: gtpu.h:155
vl_api_interface_index_t sw_if_index
Definition: gtpu.api:83
static vl_api_registration_t * vl_api_client_index_to_registration(u32 index)
Definition: api.h:57
static uword vnet_hw_interface_is_valid(vnet_main_t *vnm, u32 hw_if_index)
static void vl_api_gtpu_tunnel_dump_t_handler(vl_api_gtpu_tunnel_dump_t *mp)
Definition: gtpu_api.c:195
VLIB_API_INIT_FUNCTION(gtpu_api_hookup)
static void vl_api_gtpu_offload_rx_t_handler(vl_api_gtpu_offload_rx_t *mp)
Definition: gtpu_api.c:38
IPv4 main type.
Definition: ip4.h:106
vl_api_interface_index_t sw_if_index
Definition: gtpu.api:66
void vnet_int_gtpu_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: gtpu.c:914
u32 encap_fib_index
Definition: gtpu.h:152
dump details of an GTPU tunnel
Definition: gtpu.api:80
vl_api_interface_index_t mcast_sw_if_index
Definition: gtpu.api:86
#define vec_elt(v, i)
Get vector value at index i.
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
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
gtpu_tunnel_t * tunnels
Definition: gtpu.h:206
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:1144
struct fib_table_t_ * fibs
Vector of FIBs.
Definition: ip4.h:111
vl_api_address_t dst_address
Definition: gtpu.api:37
static void setup_message_id_table(snat_main_t *sm, api_main_t *am)
Definition: nat_api.c:3256
Set or delete an GTPU tunnel.
Definition: gtpu.api:31
bool is_ipv6
Definition: dhcp.api:202
int vnet_gtpu_add_del_rx_flow(u32 hw_if_index, u32 t_index, int is_add)
Definition: gtpu.c:1083
Dump GTPU tunnel.
Definition: gtpu.api:62
struct fib_table_t_ * fibs
Definition: ip6.h:184
u32 mcast_sw_if_index
Definition: gtpu.h:146
#define VALIDATE_SW_IF_INDEX(mp)