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add first test an...
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/*
* Copyright (C) 2017 Freie Universitรคt Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @defgroup net_gnrc_ipv6_nib_pl Prefix list
* @ingroup net_gnrc_ipv6_nib
* @brief Prefix list component of neighbor information base
* @{
*
* @file
* @brief Prefix list defintions
*
* @author Martine Lenders <mlenders@inf.fu-berlin.de>
*/
#ifndef NET_GNRC_IPV6_NIB_PL_H
#define NET_GNRC_IPV6_NIB_PL_H
#include <stdint.h>
#include "net/ipv6/addr.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Prefix list entry view on NIB
*/
typedef struct {
ipv6_addr_t pfx; /**< prefix */
uint8_t pfx_len; /**< length of gnrc_ipv6_nib_pl_t::pfx in bits */
uint16_t iface; /**< interface gnrc_ipv6_nib_pl_t::pfx is assigned
* to */
uint32_t valid_until; /**< timestamp (in ms) until which the prefix is
valid */
uint32_t pref_until; /**< timestamp (in ms) until which the prefix is
preferred */
} gnrc_ipv6_nib_pl_t;
/**
* @brief Adds (or updates) prefix to NIB
*
* @pre `(pfx != NULL)`
*
* @param[in] iface Interface @p pfx is valid on.
* @param[in] pfx The prefix. May not be a link-local prefix or a
* multicast address and its first @p pfx_len bits
* may not be 0.
* @param[in] pfx_len Length of @p pfx in bits.
* Condition @p pfx_len > 0 must hold.
* @param[in] valid_ltime Lifetime (in ms) until prefix expires from now.
* UINT32_MAX for infinite lifetime. Addresses with
* expired prefixes are removed from @p iface.
* @param[in] pref_ltime Lifetime (in ms) until prefix deprecates from now.
* UINT32_MAX for infinite lifetime. Addresses with
* deprecated prefixes should not be used for new
* communication. Only applications with difficulty
* changing to another address without service
* disruption should use deprecated addresses. May not
* be greater then @p valid_ltime.
*
* @return 0, on success.
* @return -EINVAL, if @p pfx was fe80::` or multicast,
* @p pfx_len was == 0, the first @p pfx_len bits of @ pfx were 0,
* or if pref_ltime > valid_ltime.
* @return -ENOMEM, if no space was left in the prefix list.
*/
int gnrc_ipv6_nib_pl_set(unsigned iface,
const ipv6_addr_t *pfx, unsigned pfx_len,
uint32_t valid_ltime, uint32_t pref_ltime);
/**
* @brief Deletes prefix from NIB
*
* @pre `pfx != NULL`
*
* @param[in] iface The interface @p pfx is expected to be on (0 for any).
* @param[in] pfx The prefix to be removed.
* @param[in] pfx_len Length of @p pfx in bits.
*/
void gnrc_ipv6_nib_pl_del(unsigned iface,
const ipv6_addr_t *pfx, unsigned pfx_len);
/**
* @brief Iterates over all prefix list entries in the NIB.
*
* @pre `(state != NULL) && (ple != NULL)`
*
* @param[in] iface Restrict iteration to entries on this interface.
* 0 for any interface.
* @param[in,out] state Iteration state of the prefix list. Must point to NULL
* pointer to start iteration
* @param[out] ple The next prefix list entry.
*
* Usage example:
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ {.c}
* #include "net/gnrc/ipv6/nib/pl.h"
*
* int main(void) {
* void *state = NULL;
* gnrc_ipv6_nib_pl_t ple;
*
* puts("My prefixes:");
* while (gnrc_ipv6_nib_pl_iter(0, &state, &ple)) {
* gnrc_ipv6_nib_pl_print(&ple);
* }
* return 0;
* }
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* @note The list may change during iteration.
*
* @return true, if iteration can be continued.
* @return false, if @p ple is the last prefix list ple in the NIB.
*/
bool gnrc_ipv6_nib_pl_iter(unsigned iface, void **state,
gnrc_ipv6_nib_pl_t *ple);
/**
* @brief Prints a prefix list entry
*
* @pre `ple != NULL`
*
* @param[in] ple A prefix list entry
*/
void gnrc_ipv6_nib_pl_print(gnrc_ipv6_nib_pl_t *ple);
#ifdef __cplusplus
}
#endif
#endif /* NET_GNRC_IPV6_NIB_PL_H */
/** @} */
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