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uip-ds6-nbr: add doxygen comments (and re-order some functions)

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This commit is contained in:
Yasuyuki Tanaka 2018-08-20 19:26:27 +02:00
parent ee452b5287
commit 17aa75f0cf
2 changed files with 139 additions and 12 deletions
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27
os/net/ipv6/uip-ds6-nbr.c
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@ -65,12 +65,39 @@
#define LOG_LEVEL LOG_LEVEL_IPV6
#if UIP_DS6_NBR_MULTI_IPV6_ADDRS
/**
* Add nbr to the list in nbr_entry. In other words, this function associates an
* IPv6 address in nbr with a link-layer address in nbr_entry.
* \param nbr the neighbor cache entry for an IPv6 address
* \param nbr_entry the nbr_table entry for an link-layer address
*/
static void add_uip_ds6_nbr_to_nbr_entry(uip_ds6_nbr_t *nbr,
uip_ds6_nbr_entry_t *nbr_entry);
/**
* Remove nbr from the list of the corresponding nbr_entry
* \param nbr a neighbor cache entry (nbr) to be removed
*/
static void remove_uip_ds6_nbr_from_nbr_entry(uip_ds6_nbr_t *nbr);
/**
* Remove nbr_etnry from nbr_table
* \param nbr_entry a nbr_table entry (nbr_entry) to be removed
*/
static void remove_nbr_entry(uip_ds6_nbr_entry_t *nbr_entry);
/**
* Free memory for a specified neighbor cache entry
* \param nbr a neighbor cache entry to be freed
*/
static void free_uip_ds6_nbr(uip_ds6_nbr_t *nbr);
/**
* Callback function called when a nbr_table entry is removed
* \param nbr_entry a nbr_entry to be removed
*/
static void callback_nbr_entry_removal(uip_ds6_nbr_entry_t *nbr_entry);
NBR_TABLE(uip_ds6_nbr_entry_t, uip_ds6_nbr_entries);
MEMB(uip_ds6_nbr_memb, uip_ds6_nbr_t, UIP_DS6_NBR_MAX_NEIGHBOR_CACHES);
#else

124
os/net/ipv6/uip-ds6-nbr.h
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@ -67,27 +67,33 @@
#define NBR_DELAY 3
#define NBR_PROBE 4
/** \brief Set non-zero (1) to enable multiple IPv6 addresses to be
* associated with a link-layer address */
#ifdef UIP_DS6_NBR_CONF_MULTI_IPV6_ADDRS
#define UIP_DS6_NBR_MULTI_IPV6_ADDRS UIP_DS6_NBR_CONF_MULTI_IPV6_ADDRS
#else
#define UIP_DS6_NBR_MULTI_IPV6_ADDRS 0
#endif /* UIP_DS6_NBR_CONF_MULTI_IPV6_ADDRS */
/** \brief Set the maximum number of neighbor cache entries */
#ifdef UIP_DS6_NBR_CONF_MAX_NEIGHBOR_CACHES
#define UIP_DS6_NBR_MAX_NEIGHBOR_CACHES UIP_DS6_NBR_CONF_MAX_NEIGHBOR_CACHES
#else
#define UIP_DS6_NBR_MAX_NEIGHBOR_CACHES NBR_TABLE_MAX_NEIGHBORS
#define UIP_DS6_NBR_MAX_NEIGHBOR_CACHES \
(NBR_TABLE_MAX_NEIGHBORS * UIP_DS6_NBR_MAX_6ADDRS_PER_NBR)
#endif /* UIP_DS6_NBR_CONF_MAX_NEIGHBOR_CACHES */
#if UIP_DS6_NBR_MULTI_IPV6_ADDRS
/** \brief An nbr_table entry for neighbor caches */
/** \brief nbr_table entry when UIP_DS6_NBR_MULTI_IPV6_ADDRS is
* enabled. uip_ds6_nbrs is a list of uip_ds6_nbr_t objects */
typedef struct {
LIST_STRUCT(uip_ds6_nbrs);
} uip_ds6_nbr_entry_t;
#endif /* UIP_DS6_NBR_MULTI_IPV6_ADDRS */
/** \brief An entry in the nbr cache */
/** \brief The default nbr_table entry (when
* UIP_DS6_NBR_MULTI_IPV6_ADDRS is disabled), that implements nbr
* cache */
typedef struct uip_ds6_nbr {
#if UIP_DS6_NBR_MULTI_IPV6_ADDRS
struct uip_ds6_nbr *next;
@ -109,25 +115,119 @@ typedef struct uip_ds6_nbr {
void uip_ds6_neighbors_init(void);
/** \brief Neighbor Cache basic routines */
/**
* Add a neighbor cache for a specified IPv6 address, which is
* associated with a specified link-layer address
* \param ipaddr IPv6 address of a neighbor to add
* \param lladdr Link-layer address to associate with ipaddr
* \param isrouter Set 1 if the neighbor is a router
* \param state Set the initial neighbor cache state (e.g.,
* NBR_INCOMPLETE)
* \param reason Set a reason of the addition (e.g.,
* NBR_TABLE_REASON_RPL_DIO)
* \param data Set data associated with the nbr cache
* \return the address of a newly added nbr cache on success, NULL on
* failure
*/
uip_ds6_nbr_t *uip_ds6_nbr_add(const uip_ipaddr_t *ipaddr,
const uip_lladdr_t *lladdr,
uint8_t isrouter, uint8_t state,
nbr_table_reason_t reason, void *data);
/**
* Remove a neighbor cache
* \param nbr the address of a neighbor cache to remove
* \return 1 on success, 0 on failure (nothing was removed)
*/
int uip_ds6_nbr_rm(uip_ds6_nbr_t *nbr);
/**
* Get the link-layer address associated with a specified nbr cache
* \param nbr the address of a neighbor cache
* \return pointer to the link-layer address on success, NULL on failure
*/
const uip_lladdr_t *uip_ds6_nbr_get_ll(const uip_ds6_nbr_t *nbr);
int uip_ds6_nbr_update_ll(uip_ds6_nbr_t **nbr, const uip_lladdr_t *new_ll_addr);
const uip_ipaddr_t *uip_ds6_nbr_get_ipaddr(const uip_ds6_nbr_t *nbr);
uip_ds6_nbr_t *uip_ds6_nbr_lookup(const uip_ipaddr_t *ipaddr);
uip_ds6_nbr_t *uip_ds6_nbr_ll_lookup(const uip_lladdr_t *lladdr);
uip_ipaddr_t *uip_ds6_nbr_ipaddr_from_lladdr(const uip_lladdr_t *lladdr);
/**
* Get the link-layer address associated with a specified IPv6 address
* \param ipaddr an IPv6 address used as a search key
* \return the pointer to the link-layer address on success, NULL on failure
*/
const uip_lladdr_t *uip_ds6_nbr_lladdr_from_ipaddr(const uip_ipaddr_t *ipaddr);
void uip_ds6_link_callback(int status, int numtx);
void uip_ds6_neighbor_periodic(void);
/**
* Update the link-layer address associated with an IPv6 address
* \param nbr the double pointer to a neighbor cache which has the
* target IPv6 address
* \param new_ll_addr the new link-layer address of the IPv6 address
* return 0 on success, -1 on failure
*/
int uip_ds6_nbr_update_ll(uip_ds6_nbr_t **nbr, const uip_lladdr_t *new_ll_addr);
/**
* Get an IPv6 address of a neighbor cache
* \param nbr the pointer to a neighbor cache
* \return the pointer to an IPv6 address associated with the neighbor cache
* \note This returns the first IPv6 address found in the neighbor
* cache when UIP_DS6_NBR_MULTI_IPV6_ADDRS is enabled
*/
const uip_ipaddr_t *uip_ds6_nbr_get_ipaddr(const uip_ds6_nbr_t *nbr);
/**
* Get an IPv6 address associated with a specified link-layer address
* \param lladdr a link-layer address used as a search key
* \return the pointer to an IPv6 address associated with the neighbor cache
* \note This returns the first IPv6 address found in the neighbor
* cache when UIP_DS6_NBR_MULTI_IPV6_ADDRS is enabled
*/
uip_ipaddr_t *uip_ds6_nbr_ipaddr_from_lladdr(const uip_lladdr_t *lladdr);
/**
* Get the neighbor cache associated with a specified IPv6 address
* \param ipaddr an IPv6 address used as a search key
* \return the pointer to a neighbor cache on success, NULL on failure
*/
uip_ds6_nbr_t *uip_ds6_nbr_lookup(const uip_ipaddr_t *ipaddr);
/**
* Get the neighbor cache associated with a specified link-layer address
* \param lladdr a link-layer address used as a search key
* \return the pointer to a neighbor cache on success, NULL on failure
*/
uip_ds6_nbr_t *uip_ds6_nbr_ll_lookup(const uip_lladdr_t *lladdr);
/**
* Return the number of neighbor caches
* \return the number of neighbor caches in use
*/
int uip_ds6_nbr_num(void);
/**
* Get the first neighbor cache in nbr_table
* \return the pointer to the first neighbor cache entry
*/
uip_ds6_nbr_t *uip_ds6_nbr_head(void);
/**
* Get the next neighbor cache of a specified one
* \param nbr the pointer to a neighbor cache
* \return the pointer to the next one on success, NULL on failure
*/
uip_ds6_nbr_t *uip_ds6_nbr_next(uip_ds6_nbr_t *nbr);
/**
* The callback function to update link-layer stats in a neighbor
* cache
* \param status MAC return value defined in mac.h
* \param numtx the number of transmissions happened for a packet
*/
void uip_ds6_link_callback(int status, int numtx);
/**
* The housekeeping function called periodically
*/
void uip_ds6_neighbor_periodic(void);
#if UIP_ND6_SEND_NS
/**
* \brief Refresh the reachable state of a neighbor. This function