2 * Copyright (c) 2020 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #ifndef included_ip_vtep_h
17 #define included_ip_vtep_h
19 #include <vppinfra/hash.h>
20 #include <vnet/ip/ip.h>
21 #include <vnet/ip/ip4.h>
22 #include <vnet/ip/ip6.h>
25 * @brief Tunnel endpoint key (IPv4)
27 * Tunnel modules maintain a set of vtep4_key_t-s to track local IP
28 * addresses that have tunnels established. Bypass node consults the
29 * corresponding set to decide whether a packet should bypass normal
30 * processing and go directly to the tunnel protocol handler node.
47 * @brief Tunnel endpoint key (IPv6)
49 * Tunnel modules maintain a set of vtep6_key_t-s to track local IP
50 * addresses that have tunnels established. Bypass node consults the
51 * corresponding set to decide whether a packet should bypass normal
52 * processing and go directly to the tunnel protocol handler node.
65 uword *vtep4; /* local ip4 VTEPs keyed on their ip4 addr + fib_index */
66 uword *vtep6; /* local ip6 VTEPs keyed on their ip6 addr + fib_index */
69 always_inline vtep_table_t
73 t.vtep6 = hash_create_mem (0, sizeof (vtep6_key_t), sizeof (uword));
77 uword vtep_addr_ref (vtep_table_t * t, u32 fib_index, ip46_address_t * ip);
78 uword vtep_addr_unref (vtep_table_t * t, u32 fib_index, ip46_address_t * ip);
81 vtep4_key_init (vtep4_key_t * k4)
83 k4->as_u64 = ~((u64) 0);
87 vtep6_key_init (vtep6_key_t * k6)
89 ip6_address_set_zero (&k6->addr);
90 k6->fib_index = (u32) ~ 0;
97 VTEP_CHECK_PASS_UNCHANGED = 2
101 vtep4_check (vtep_table_t * t, vlib_buffer_t * b0, ip4_header_t * ip40,
102 vtep4_key_t * last_k4)
105 k4.addr.as_u32 = ip40->dst_address.as_u32;
106 k4.fib_index = vlib_buffer_get_ip4_fib_index (b0);
107 if (PREDICT_TRUE (k4.as_u64 == last_k4->as_u64))
108 return VTEP_CHECK_PASS_UNCHANGED;
109 if (PREDICT_FALSE (!hash_get (t->vtep4, k4.as_u64)))
110 return VTEP_CHECK_FAIL;
111 last_k4->as_u64 = k4.as_u64;
112 return VTEP_CHECK_PASS;
116 vtep6_check (vtep_table_t * t, vlib_buffer_t * b0, ip6_header_t * ip60,
117 vtep6_key_t * last_k6)
120 k6.fib_index = vlib_buffer_get_ip6_fib_index (b0);
121 if (PREDICT_TRUE (k6.fib_index == last_k6->fib_index
122 && ip60->dst_address.as_u64[0] == last_k6->addr.as_u64[0]
123 && ip60->dst_address.as_u64[1] ==
124 last_k6->addr.as_u64[1]))
126 return VTEP_CHECK_PASS_UNCHANGED;
128 k6.addr = ip60->dst_address;
129 if (PREDICT_FALSE (!hash_get_mem (t->vtep6, &k6)))
130 return VTEP_CHECK_FAIL;
132 return VTEP_CHECK_PASS;
134 #endif /* included_ip_vtep_h */
137 * fd.io coding-style-patch-verification: ON
140 * eval: (c-set-style "gnu")