[457] | 1 | /**
|
---|
| 2 | * @file
|
---|
| 3 | *
|
---|
| 4 | * IPv6 static route table.
|
---|
| 5 | */
|
---|
| 6 |
|
---|
| 7 | /*
|
---|
| 8 | * Copyright (c) 2015 Nest Labs, Inc.
|
---|
| 9 | * All rights reserved.
|
---|
| 10 | *
|
---|
| 11 | * Redistribution and use in source and binary forms, with or without modification,
|
---|
| 12 | * are permitted provided that the following conditions are met:
|
---|
| 13 | *
|
---|
| 14 | * 1. Redistributions of source code must retain the above copyright notice,
|
---|
| 15 | * this list of conditions and the following disclaimer.
|
---|
| 16 | * 2. Redistributions in binary form must reproduce the above copyright notice,
|
---|
| 17 | * this list of conditions and the following disclaimer in the documentation
|
---|
| 18 | * and/or other materials provided with the distribution.
|
---|
| 19 | * 3. The name of the author may not be used to endorse or promote products
|
---|
| 20 | * derived from this software without specific prior written permission.
|
---|
| 21 | *
|
---|
| 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
---|
| 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
---|
| 24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
---|
| 25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
---|
| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
---|
| 27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
---|
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
---|
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
---|
| 30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
---|
| 31 | * OF SUCH DAMAGE.
|
---|
| 32 | *
|
---|
| 33 | * Author: Pradip De <pradipd@google.com>
|
---|
| 34 | *
|
---|
| 35 | *
|
---|
| 36 | * Please coordinate changes and requests with Pradip De
|
---|
| 37 | * <pradipd@google.com>
|
---|
| 38 | */
|
---|
| 39 |
|
---|
| 40 | #ifndef __LWIP_IP6_ROUTE_TABLE_H__
|
---|
| 41 | #define __LWIP_IP6_ROUTE_TABLE_H__
|
---|
| 42 |
|
---|
| 43 | #include "lwip/opt.h"
|
---|
| 44 |
|
---|
| 45 | #if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */
|
---|
| 46 |
|
---|
| 47 | #include "lwip/ip6_addr.h"
|
---|
| 48 | #include "lwip/err.h"
|
---|
| 49 |
|
---|
| 50 | #ifdef __cplusplus
|
---|
| 51 | extern "C" {
|
---|
| 52 | #endif
|
---|
| 53 |
|
---|
| 54 | struct netif;
|
---|
| 55 |
|
---|
| 56 | /**
|
---|
| 57 | * LWIP_IPV6_NUM_ROUTES: Number of IPV6 routes that can be kept in the static route table.
|
---|
| 58 | */
|
---|
| 59 | #ifndef LWIP_IPV6_NUM_ROUTE_ENTRIES
|
---|
| 60 | #define LWIP_IPV6_NUM_ROUTE_ENTRIES (8)
|
---|
| 61 | #endif
|
---|
| 62 |
|
---|
| 63 | #define IP6_MAX_PREFIX_LEN (128)
|
---|
| 64 | #define IP6_PREFIX_ALLOWED_GRANULARITY (8)
|
---|
| 65 | /* Prefix length cannot be greater than 128 bits and needs to be at a byte boundary */
|
---|
| 66 | #define ip6_prefix_valid(prefix_len) (((prefix_len) <= IP6_MAX_PREFIX_LEN) && \
|
---|
| 67 | (((prefix_len) % IP6_PREFIX_ALLOWED_GRANULARITY) == 0))
|
---|
| 68 |
|
---|
| 69 | struct ip6_prefix {
|
---|
| 70 | ip6_addr_t addr;
|
---|
| 71 | u8_t prefix_len; /* prefix length in bits at byte boundaries */
|
---|
| 72 | };
|
---|
| 73 |
|
---|
| 74 | struct ip6_route_entry {
|
---|
| 75 | struct ip6_prefix prefix;
|
---|
| 76 | struct netif *netif;
|
---|
| 77 | const ip6_addr_t *gateway;
|
---|
| 78 | };
|
---|
| 79 |
|
---|
| 80 | err_t ip6_add_route_entry(const struct ip6_prefix *ip6_prefix, struct netif *netif,
|
---|
| 81 | const ip6_addr_t *gateway, s8_t *idx);
|
---|
| 82 | void ip6_remove_route_entry(const struct ip6_prefix *ip6_prefix);
|
---|
| 83 | s8_t ip6_find_route_entry(const ip6_addr_t *ip6_dest_addr);
|
---|
| 84 | struct netif *ip6_static_route(const ip6_addr_t *src, const ip6_addr_t *dest);
|
---|
| 85 | const ip6_addr_t *ip6_get_gateway(struct netif *netif, const ip6_addr_t *dest);
|
---|
| 86 | const struct ip6_route_entry *ip6_get_route_table(void);
|
---|
| 87 |
|
---|
| 88 | #ifdef __cplusplus
|
---|
| 89 | }
|
---|
| 90 | #endif
|
---|
| 91 |
|
---|
| 92 | #endif /* LWIP_IPV6 */
|
---|
| 93 |
|
---|
| 94 | #endif /* __LWIP_IP6_ROUTE_TABLE_H__ */
|
---|