gtpu_api.c revision 49228efc
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
28#include <gtpu/gtpu.h>
29
30#include <gtpu/gtpu.api_enum.h>
31#include <gtpu/gtpu.api_types.h>
32
33#define REPLY_MSG_ID_BASE gtm->msg_id_base
34#include <vlibapi/api_helper_macros.h>
35
36static void
37  vl_api_sw_interface_set_gtpu_bypass_t_handler
38  (vl_api_sw_interface_set_gtpu_bypass_t * mp)
39{
40  vl_api_sw_interface_set_gtpu_bypass_reply_t *rmp;
41  int rv = 0;
42  u32 sw_if_index = ntohl (mp->sw_if_index);
43  gtpu_main_t *gtm = &gtpu_main;
44
45  VALIDATE_SW_IF_INDEX (mp);
46
47  vnet_int_gtpu_bypass_mode (sw_if_index, mp->is_ipv6, mp->enable);
48  BAD_SW_IF_INDEX_LABEL;
49
50  REPLY_MACRO (VL_API_SW_INTERFACE_SET_GTPU_BYPASS_REPLY);
51}
52
53static void vl_api_gtpu_add_del_tunnel_t_handler
54  (vl_api_gtpu_add_del_tunnel_t * mp)
55{
56  vl_api_gtpu_add_del_tunnel_reply_t *rmp;
57  int rv = 0;
58  ip4_main_t *im = &ip4_main;
59  gtpu_main_t *gtm = &gtpu_main;
60
61  uword *p = hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id));
62  if (!p)
63    {
64      rv = VNET_API_ERROR_NO_SUCH_FIB;
65      goto out;
66    }
67
68  vnet_gtpu_add_del_tunnel_args_t a = {
69    .is_add = mp->is_add,
70    .is_ip6 = mp->is_ipv6,
71    .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index),
72    .encap_fib_index = p[0],
73    .decap_next_index = ntohl (mp->decap_next_index),
74    .teid = ntohl (mp->teid),
75    .dst = to_ip46 (mp->is_ipv6, mp->dst_address),
76    .src = to_ip46 (mp->is_ipv6, mp->src_address),
77  };
78
79  /* Check src & dst are different */
80  if (ip46_address_cmp (&a.dst, &a.src) == 0)
81    {
82      rv = VNET_API_ERROR_SAME_SRC_DST;
83      goto out;
84    }
85  if (ip46_address_is_multicast (&a.dst) &&
86      !vnet_sw_if_index_is_api_valid (a.mcast_sw_if_index))
87    {
88      rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
89      goto out;
90    }
91
92  u32 sw_if_index = ~0;
93  rv = vnet_gtpu_add_del_tunnel (&a, &sw_if_index);
94
95out:
96  /* *INDENT-OFF* */
97  REPLY_MACRO2(VL_API_GTPU_ADD_DEL_TUNNEL_REPLY,
98  ({
99    rmp->sw_if_index = ntohl (sw_if_index);
100  }));
101  /* *INDENT-ON* */
102}
103
104static void send_gtpu_tunnel_details
105  (gtpu_tunnel_t * t, vl_api_registration_t * reg, u32 context)
106{
107  vl_api_gtpu_tunnel_details_t *rmp;
108  ip4_main_t *im4 = &ip4_main;
109  ip6_main_t *im6 = &ip6_main;
110  u8 is_ipv6 = !ip46_address_is_ip4 (&t->dst);
111
112  rmp = vl_msg_api_alloc (sizeof (*rmp));
113  clib_memset (rmp, 0, sizeof (*rmp));
114  rmp->_vl_msg_id = ntohs (VL_API_GTPU_TUNNEL_DETAILS);
115  if (is_ipv6)
116    {
117      memcpy (rmp->src_address, t->src.ip6.as_u8, 16);
118      memcpy (rmp->dst_address, t->dst.ip6.as_u8, 16);
119      rmp->encap_vrf_id = htonl (im6->fibs[t->encap_fib_index].ft_table_id);
120    }
121  else
122    {
123      memcpy (rmp->src_address, t->src.ip4.as_u8, 4);
124      memcpy (rmp->dst_address, t->dst.ip4.as_u8, 4);
125      rmp->encap_vrf_id = htonl (im4->fibs[t->encap_fib_index].ft_table_id);
126    }
127  rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index);
128  rmp->teid = htonl (t->teid);
129  rmp->decap_next_index = htonl (t->decap_next_index);
130  rmp->sw_if_index = htonl (t->sw_if_index);
131  rmp->is_ipv6 = is_ipv6;
132  rmp->context = context;
133
134  vl_api_send_msg (reg, (u8 *) rmp);
135}
136
137static void
138vl_api_gtpu_tunnel_dump_t_handler (vl_api_gtpu_tunnel_dump_t * mp)
139{
140  vl_api_registration_t *reg;
141  gtpu_main_t *gtm = &gtpu_main;
142  gtpu_tunnel_t *t;
143  u32 sw_if_index;
144
145  reg = vl_api_client_index_to_registration (mp->client_index);
146  if (!reg)
147    return;
148
149  sw_if_index = ntohl (mp->sw_if_index);
150
151  if (~0 == sw_if_index)
152    {
153      /* *INDENT-OFF* */
154      pool_foreach (t, gtm->tunnels,
155      ({
156        send_gtpu_tunnel_details(t, reg, mp->context);
157      }));
158      /* *INDENT-ON* */
159    }
160  else
161    {
162      if ((sw_if_index >= vec_len (gtm->tunnel_index_by_sw_if_index)) ||
163	  (~0 == gtm->tunnel_index_by_sw_if_index[sw_if_index]))
164	{
165	  return;
166	}
167      t = &gtm->tunnels[gtm->tunnel_index_by_sw_if_index[sw_if_index]];
168      send_gtpu_tunnel_details (t, reg, mp->context);
169    }
170}
171
172#include <gtpu/gtpu.api.c>
173static clib_error_t *
174gtpu_api_hookup (vlib_main_t * vm)
175{
176  gtpu_main_t *gtm = &gtpu_main;
177
178  gtm->msg_id_base = setup_message_id_table ();
179  return 0;
180}
181
182VLIB_API_INIT_FUNCTION (gtpu_api_hookup);
183
184/*
185 * fd.io coding-style-patch-verification: ON
186 *
187 * Local Variables:
188 * eval: (c-set-style "gnu")
189 * End:
190 */
191