208 lines
6.4 KiB
C
208 lines
6.4 KiB
C
/**
|
|
* \addtogroup uip6
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Network interface and stateless autoconfiguration (RFC 4862)
|
|
* \author Mathilde Durvy <mdurvy@cisco.com>
|
|
* \author Julien Abeille <jabeille@cisco.com>
|
|
*
|
|
*/
|
|
/*
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifndef __UIP_NETIF_H__
|
|
#define __UIP_NETIF_H__
|
|
|
|
#include "net/uip-nd6.h"
|
|
|
|
#ifndef UIP_CONF_NETIF_MAX_ADDRESSES
|
|
#define UIP_CONF_NETIF_MAX_ADDRESSES 2
|
|
#endif /*UIP_CONF_NETIF_MAX_ADDRESSES*/
|
|
|
|
/**
|
|
* \brief Possible states for the address of an interface (RFC 4862 autoconf +
|
|
* NOT_USED + INFINITE)
|
|
*/
|
|
typedef enum {
|
|
NOT_USED = -1,
|
|
TENTATIVE = 0,
|
|
PREFERRED = 1,
|
|
DEPRECATED = 2, /* not needed if we don't use pliffetime in prefix struct */
|
|
} uip_netif_state;
|
|
|
|
/**
|
|
* \brief How the address was acquired: Autoconf, DHCP or manually
|
|
*
|
|
*/
|
|
typedef enum {
|
|
AUTOCONF = 1,
|
|
DHCP = 2,
|
|
MANUAL = 3
|
|
} uip_netif_type;
|
|
|
|
/**
|
|
* \brief An address structure for an interface
|
|
*
|
|
* Contains an ip address assigned to the interface, and its state.
|
|
*/
|
|
struct uip_netif_addr {
|
|
uip_ipaddr_t ipaddr;
|
|
uip_netif_state state;
|
|
struct timer vlifetime;
|
|
u8_t is_infinite;
|
|
uip_netif_type type;
|
|
};
|
|
|
|
/** \brief Interface structure (contains all the interface variables) */
|
|
struct uip_netif {
|
|
u32_t link_mtu;
|
|
u8_t cur_hop_limit;
|
|
u32_t base_reachable_time; /* in msec */
|
|
u32_t reachable_time; /* in msec */
|
|
u32_t retrans_timer; /* in msec */
|
|
u8_t dup_addr_detect_transmit;
|
|
/** Note: the link-local address is at position 0 */
|
|
struct uip_netif_addr addresses[UIP_CONF_NETIF_MAX_ADDRESSES];
|
|
uip_ipaddr_t solicited_node_mcastaddr;
|
|
};
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
extern struct uip_netif uip_netif_physical_if;
|
|
extern struct etimer uip_netif_timer_dad;
|
|
extern struct etimer uip_netif_timer_rs;
|
|
extern struct etimer uip_netif_timer_periodic;
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** \brief Initialize the network interfac and run stateless autoconf */
|
|
void uip_netif_init(void);
|
|
|
|
|
|
/**
|
|
* \brief periodically check the state of the addresses.
|
|
*/
|
|
void uip_netif_periodic(void);
|
|
|
|
/**
|
|
* \brief recompute random reachable timer
|
|
* \return the new value for timer
|
|
*/
|
|
u32_t uip_netif_compute_reachable_time(void);
|
|
|
|
/**
|
|
* \brief Check if an unicast address is attached to my interface
|
|
* \param ipaddr an IP address to be checked
|
|
* \return 1 if address is attached to my interface (otherwise false)
|
|
*/
|
|
#define uip_netif_is_addr_my_unicast(a) (uip_netif_addr_lookup(a, 128, 0) != NULL)
|
|
|
|
/**
|
|
* \brief Check if this is my solicited-node multicast address
|
|
* \param ipaddr an IP address to be checked
|
|
* \return 1 if the address is my solicited-node (otherwise false)
|
|
*/
|
|
u8_t uip_netif_is_addr_my_solicited(uip_ipaddr_t *ipaddr);
|
|
|
|
/**
|
|
* \brief Autoconfigure and add an address corresponding to a specific prefix
|
|
* \param ipaddr the prefix if we are doing autoconf, the address for DHCP and manual
|
|
* \param length the prefix length if autoconf, 0 for DHCP and manual
|
|
* \param vlifetime valid lifetime of the address, 0 if the address has INFINITE lifetime,
|
|
* non 0 otherwise
|
|
* \param type AUTOCONF or MANUAL or DHCP
|
|
*/
|
|
void uip_netif_addr_add(uip_ipaddr_t *ipaddr, u8_t length, clock_time_t vlifetime, uip_netif_type type);
|
|
|
|
/**
|
|
* \brief Set the 8 last bytes of the IP address
|
|
* based on the L2 identifier using autoconf
|
|
* \param *ipaddr the IP address to be completed with layer 2 info
|
|
* \param *lladdr the L2 address
|
|
*/
|
|
void uip_netif_addr_autoconf_set(uip_ipaddr_t *ipaddr, uip_lladdr_t *lladdr);
|
|
|
|
/**
|
|
* \brief Lookup an address
|
|
* \param ipaddr the prefix if we are looking for an autoconf address, the address otherwise
|
|
* \param length the prefix length if we are looking for autoconf address, 128 otherwise
|
|
* \param type AUTOCONF or MANUAL or DHCP or 0
|
|
*
|
|
*
|
|
* If we are looking for an AUTOCONFIGURED address, ipaddr is a prefix
|
|
* length is its length, type is AUTOCONF.
|
|
* Otherwise ipaddr is a full address, length must be 128, type is MANUAL
|
|
* or DHCP.
|
|
* Note: if we do not care about the type, type MUST be 0
|
|
*/
|
|
struct uip_netif_addr *
|
|
uip_netif_addr_lookup(uip_ipaddr_t *ipaddr, u8_t length, uip_netif_type type);
|
|
|
|
/**
|
|
* \brief Select the appropriate source address for a packet
|
|
* \param ipaddr the selected address (returned value)
|
|
* \param ipaddr the destination of the packet
|
|
*/
|
|
void uip_netif_select_src(uip_ipaddr_t *src, uip_ipaddr_t *dst);
|
|
|
|
/**
|
|
* \brief Schedule DAD for a given address
|
|
* \param ifaddr the address for which schedule DAD
|
|
*/
|
|
void uip_netif_sched_dad(struct uip_netif_addr *ifaddr);
|
|
|
|
/**
|
|
* \brief Perform DAD (i.e. Duplicate Address Detection)
|
|
*/
|
|
void uip_netif_dad(void);
|
|
|
|
/**
|
|
* \brief DAD failed, should never happen!
|
|
* \param ipaddr the address for which DAD failed
|
|
*/
|
|
void uip_netif_dad_failed(uip_ipaddr_t *ipaddr);
|
|
|
|
/**
|
|
* \brief Schedule the sending of RS
|
|
*/
|
|
void uip_netif_sched_send_rs(void);
|
|
|
|
/**
|
|
* \brief Send up to MAX_RTR_SOLICITATION_DELAY RS separated by a delay of
|
|
* RTR_SOLICITATION_INTERVAL
|
|
*/
|
|
void uip_netif_send_rs(void);
|
|
|
|
#endif
|
|
|
|
/** @} */
|
|
|