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fixed codestyle, improved APIs, and cleaned up comments

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This commit is contained in:
Joakim Eriksson 2016-03-26 20:12:52 +01:00
parent 12ac02650b
commit 12a75c3e43
12 changed files with 91 additions and 51 deletions
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9
core/net/ipv6/uip-ds6-route.c
View file

@ -207,8 +207,15 @@ uip_ds6_route_next(uip_ds6_route_t *r)
}
/*---------------------------------------------------------------------------*/
int
uip_ds6_route_is_nexthop(const uip_lladdr_t *lladdr)
uip_ds6_route_is_nexthop(const uip_ipaddr_t *ipaddr)
{
const uip_lladdr_t *lladdr;
lladdr = uip_ds6_nbr_lladdr_from_ipaddr(ipaddr);
if(lladdr == NULL) {
return 0;
}
return nbr_table_get_from_lladdr(nbr_routes, (linkaddr_t *)lladdr) != NULL;
}
/*---------------------------------------------------------------------------*/

5
core/net/ipv6/uip-ds6-route.h
View file

@ -124,6 +124,9 @@ void uip_ds6_notification_rm(struct uip_ds6_notification *n);
#define RPL_ROUTE_SET_DAO_NACKED(route) do { \
(route)->state.state_flags |= RPL_ROUTE_ENTRY_DAO_NACK; \
} while(0)
#define RPL_ROUTE_CLEAR_DAO_NACKED(route) do { \
(route)->state.state_flags &= ~RPL_ROUTE_ENTRY_DAO_NACK; \
} while(0)
#define RPL_ROUTE_CLEAR_DAO(route) do { \
(route)->state.state_flags &= ~(RPL_ROUTE_ENTRY_DAO_NACK|RPL_ROUTE_ENTRY_DAO_PENDING); \
@ -200,7 +203,7 @@ uip_ipaddr_t *uip_ds6_route_nexthop(uip_ds6_route_t *);
int uip_ds6_route_num_routes(void);
uip_ds6_route_t *uip_ds6_route_head(void);
uip_ds6_route_t *uip_ds6_route_next(uip_ds6_route_t *);
int uip_ds6_route_is_nexthop(const uip_lladdr_t *lladdr);
int uip_ds6_route_is_nexthop(const uip_ipaddr_t *ipaddr);
/** @} */
#endif /* UIP_DS6_ROUTE_H */

18
core/net/rpl/rpl-dag.c
View file

@ -899,6 +899,18 @@ rpl_move_parent(rpl_dag_t *dag_src, rpl_dag_t *dag_dst, rpl_parent_t *parent)
parent->dag = dag_dst;
}
/*---------------------------------------------------------------------------*/
int
rpl_has_downward_route(void)
{
int i;
for(i = 0; i < RPL_MAX_INSTANCES; ++i) {
if(instance_table[i].used && instance_table[i].has_downward_route) {
return 1;
}
}
return 0;
}
/*---------------------------------------------------------------------------*/
rpl_dag_t *
rpl_get_any_dag(void)
{
@ -1157,8 +1169,6 @@ global_repair(uip_ipaddr_t *from, rpl_dag_t *dag, rpl_dio_t *dio)
RPL_STAT(rpl_stats.global_repairs++);
}
void rpl_set_downward_link(uint8_t link);
/*---------------------------------------------------------------------------*/
void
rpl_local_repair(rpl_instance_t *instance)
@ -1177,8 +1187,8 @@ rpl_local_repair(rpl_instance_t *instance)
}
}
/* no downward link anymore */
rpl_set_downward_link(0);
/* no downward route anymore */
instance->has_downward_route = 0;
rpl_reset_dio_timer(instance);
/* Request refresh of DAO registrations next DIO */

43
core/net/rpl/rpl-icmp6.c
View file

@ -90,7 +90,6 @@ void RPL_DEBUG_DAO_OUTPUT(rpl_parent_t *);
#endif
static uint8_t dao_sequence = RPL_LOLLIPOP_INIT;
static uint8_t downward = 0;
extern rpl_of_t RPL_OF;
@ -105,18 +104,6 @@ UIP_ICMP6_HANDLER(dao_handler, ICMP6_RPL, RPL_CODE_DAO, dao_input);
UIP_ICMP6_HANDLER(dao_ack_handler, ICMP6_RPL, RPL_CODE_DAO_ACK, dao_ack_input);
/*---------------------------------------------------------------------------*/
void
rpl_set_downward_link(uint8_t link)
{
downward = link;
}
int
rpl_has_downward_link()
{
return downward;
}
#if RPL_WITH_DAO_ACK
static uip_ds6_route_t *
find_route_entry_by_dao_ack(uint8_t seq)
@ -215,8 +202,10 @@ rpl_icmp6_update_nbr_table(uip_ipaddr_t *from, nbr_table_reason_t reason, void *
if(nbr != NULL) {
#if UIP_ND6_SEND_NA
/* set reachable timer if we added or found the nbr entry */
/* set reachable timer if we added or found the nbr entry - and update
neighbor entry to reachable to avoid sending NS/NA, etc. */
stimer_set(&nbr->reachable, UIP_ND6_REACHABLE_TIME / 1000);
nbr->state = NBR_REACHABLE;
#endif /* UIP_ND6_SEND_NA */
}
return nbr;
@ -833,7 +822,7 @@ dao_input(void)
if(flags & RPL_DAO_K_FLAG) {
/* signal the failure to add the node */
dao_ack_output(instance, &dao_sender_addr, sequence,
is_root ? RPL_DAO_ACK_UNABLE_TO_ACCEPT_ROOT :
is_root ? RPL_DAO_ACK_UNABLE_TO_ADD_ROUTE_AT_ROOT :
RPL_DAO_ACK_UNABLE_TO_ACCEPT);
}
goto discard;
@ -846,7 +835,7 @@ dao_input(void)
if(flags & RPL_DAO_K_FLAG) {
/* signal the failure to add the node */
dao_ack_output(instance, &dao_sender_addr, sequence,
is_root ? RPL_DAO_ACK_UNABLE_TO_ACCEPT_ROOT :
is_root ? RPL_DAO_ACK_UNABLE_TO_ADD_ROUTE_AT_ROOT :
RPL_DAO_ACK_UNABLE_TO_ACCEPT);
}
goto discard;
@ -864,8 +853,12 @@ fwd_dao:
int should_ack = 0;
if(flags & RPL_DAO_K_FLAG) {
/* check if this route is already installed and we can ack now! */
/* not pending - and same seq-no means that we can ack. */
/*
* check if this route is already installed and we can ack now!
* not pending - and same seq-no means that we can ack.
* (e.g. the route is installed already so it will not take any
* more room that it already takes - so should be ok!)
*/
if((!RPL_ROUTE_IS_DAO_PENDING(rep) &&
rep->state.dao_seqno_in == sequence) ||
dag->rank == ROOT_RANK(instance)) {
@ -992,7 +985,7 @@ dao_output(rpl_parent_t *parent, uint8_t lifetime)
#else
/* We know that we have tried to register so now we are assuming
that we have a down-link - unless this is a zero lifetime one */
rpl_set_downward_link(lifetime != RPL_ZERO_LIFETIME);
parent->dag->instance->has_downward_route = lifetime != RPL_ZERO_LIFETIME;
#endif /* RPL_WITH_DAO_ACK */
/* Sending a DAO with own prefix as target */
@ -1122,9 +1115,7 @@ dao_ack_input(void)
parent = rpl_find_parent(instance->current_dag, &UIP_IP_BUF->srcipaddr);
if(parent == NULL) {
/* not a known instance - did we switch?? */
// PRINTF("RPL: Received a DAO ACK from a not joined instance: %d",
// instance_id);
/* not a known instance - drop the packet and ignore */
uip_clear_buf();
return;
}
@ -1136,7 +1127,7 @@ dao_ack_input(void)
PRINTF("\n");
if(sequence == instance->my_dao_seqno) {
rpl_set_downward_link(status < 128);
instance->has_downward_route = status < 128;
/* always stop the retransmit timer when the ACK arrived */
ctimer_stop(&instance->dao_retransmit_timer);
@ -1148,8 +1139,10 @@ dao_ack_input(void)
#if RPL_REPAIR_ON_DAO_NACK
if(status >= RPL_DAO_ACK_UNABLE_TO_ACCEPT) {
/* failed the DAO transmission - need to remove the default route. */
/* Trigger a local repair since we can not get our DAO in... */
/*
* Failed the DAO transmission - need to remove the default route.
* Trigger a local repair since we can not get our DAO in.
*/
rpl_local_repair(instance);
}
#endif

8
core/net/rpl/rpl-mrhof.c
View file

@ -54,7 +54,9 @@
static void reset(rpl_dag_t *);
static void neighbor_link_callback(rpl_parent_t *, int, int);
#if RPL_WITH_DAO_ACK
static void dao_ack_callback(rpl_parent_t *, int);
#endif
static rpl_parent_t *best_parent(rpl_parent_t *, rpl_parent_t *);
static rpl_dag_t *best_dag(rpl_dag_t *, rpl_dag_t *);
static rpl_rank_t calculate_rank(rpl_parent_t *, rpl_rank_t);
@ -63,7 +65,9 @@ static void update_metric_container(rpl_instance_t *);
rpl_of_t rpl_mrhof = {
reset,
neighbor_link_callback,
#if RPL_WITH_DAO_ACK
dao_ack_callback,
#endif
best_parent,
best_dag,
calculate_rank,
@ -119,10 +123,11 @@ reset(rpl_dag_t *dag)
PRINTF("RPL: Reset MRHOF\n");
}
#if RPL_WITH_DAO_ACK
static void
dao_ack_callback(rpl_parent_t *p, int status)
{
if(status == RPL_DAO_ACK_UNABLE_TO_ACCEPT_ROOT) {
if(status == RPL_DAO_ACK_UNABLE_TO_ADD_ROUTE_AT_ROOT) {
return;
}
/* here we need to handle failed DAO's and other stuff */
@ -135,6 +140,7 @@ dao_ack_callback(rpl_parent_t *p, int status)
neighbor_link_callback(p, MAC_TX_OK, 10);
}
}
#endif /* RPL_WITH_DAO_ACK */
static void
neighbor_link_callback(rpl_parent_t *p, int status, int numtx)

33
core/net/rpl/rpl-nbr-policy.c
View file

@ -72,6 +72,10 @@ static linkaddr_t *worst_rank_nbr; /* the parent that has the worst rank */
static rpl_rank_t worst_rank;
/*---------------------------------------------------------------------------*/
#if DEBUG == DEBUG_FULL
/*
* This create a periodic call of the update_nbr function that will print
* useful debugging information when in DEBUG_FULL mode
*/
static void update_nbr(void);
static struct ctimer periodic_timer;
static int timer_init = 0;
@ -111,9 +115,12 @@ update_nbr(void)
linkaddr_t *lladdr = nbr_table_get_lladdr(ds6_neighbors, nbr);
is_used = 0;
/* Check if this neighbor is used as nexthop and therefor being a
RPL child. */
if(uip_ds6_route_is_nexthop((uip_lladdr_t *)lladdr) != 0) {
/*
* Check if this neighbor is used as nexthop and therefor being a
* RPL child.
*/
if(uip_ds6_route_is_nexthop(&nbr->ipaddr) != 0) {
is_used++;
num_children++;
}
@ -123,10 +130,10 @@ update_nbr(void)
num_parents++;
if(parent->dag != NULL && parent->dag->preferred_parent == parent) {
/* This is the preferred parent for the DAG and must not be removed */
/* Note: this assumes that only RPL adds default routes. */
/*
* This is the preferred parent for the DAG and must not be removed
* Note: this assumes that only RPL adds default routes.
*/
} else if(is_used == 0 && worst_rank < INFINITE_RANK &&
parent->rank > 0 &&
parent->dag != NULL &&
@ -168,9 +175,10 @@ find_removable_dis(uip_ipaddr_t *from)
update_nbr();
if(num_free > 0) {
printf("num-free > 0 = %d", num_free);
printf("**** Should remove unused elements but can not... \n");
/* return 1; */
/* there are free entries (e.g. unsused by RPL and ND6) but since it is
used by other modules we can not pick these entries for removal. */
PRINTF("Num-free > 0 = %d - Other for RPL/ND6 unused NBR entry exists .",
num_free);
}
if(num_children < MAX_CHILDREN) {
return worst_rank_nbr;
@ -192,7 +200,7 @@ find_removable_dio(uip_ipaddr_t *from, rpl_dio_t *dio)
return NULL;
}
/* Add the new neighbor only if it is better than the preferred parent. */
/* Add the new neighbor only if it is better than the worst parent. */
rank = instance->of->calculate_rank(NULL, dio->rank);
if(rank < worst_rank - instance->min_hoprankinc / 2) {
/* Found *great* neighbor - add! */
@ -231,7 +239,8 @@ find_removable_dao(uip_ipaddr_t *from, rpl_instance_t *instance)
}
/*---------------------------------------------------------------------------*/
const linkaddr_t *
rpl_nbr_policy_find_removable(nbr_table_reason_t reason,void * data) {
rpl_nbr_policy_find_removable(nbr_table_reason_t reason,void * data)
{
/* When we get the DIO/DAO/DIS we know that UIP contains the
incoming packet */
switch(reason) {

2
core/net/rpl/rpl-of0.c
View file

@ -55,7 +55,9 @@ static void update_metric_container(rpl_instance_t *);
rpl_of_t rpl_of0 = {
reset,
NULL,
#if RPL_WITH_DAO_ACK
NULL,
#endif
best_parent,
best_dag,
calculate_rank,

2
core/net/rpl/rpl-private.h
View file

@ -94,7 +94,7 @@
#define RPL_DAO_ACK_UNCONDITIONAL_ACCEPT 0
#define RPL_DAO_ACK_ACCEPT 1 /* 1 - 127 is OK but not good */
#define RPL_DAO_ACK_UNABLE_TO_ACCEPT 128 /* >127 is fail */
#define RPL_DAO_ACK_UNABLE_TO_ACCEPT_ROOT 255 /* root can not accept */
#define RPL_DAO_ACK_UNABLE_TO_ADD_ROUTE_AT_ROOT 255 /* root can not accept */
#define RPL_DAO_ACK_TIMEOUT -1

16
core/net/rpl/rpl.h
View file

@ -181,11 +181,19 @@ typedef struct rpl_instance rpl_instance_t;
* Updates the metric container for outgoing DIOs in a certain DAG.
* If the objective function of the DAG does not use metric containers,
* the function should set the object type to RPL_DAG_MC_NONE.
*
* dao_ack_callback(parent, status)
*
* A callback on the result of the DAO ACK. Similar to the neighbor link
* callback. A failed DAO_ACK (NACK) can be used for switching to another
* parent via changed link metric or other mechanisms.
*/
struct rpl_of {
void (*reset)(struct rpl_dag *);
void (*neighbor_link_callback)(rpl_parent_t *, int, int);
#if RPL_WITH_DAO_ACK
void (*dao_ack_callback)(rpl_parent_t *, int status);
#endif
rpl_parent_t *(*best_parent)(rpl_parent_t *, rpl_parent_t *);
rpl_dag_t *(*best_dag)(rpl_dag_t *, rpl_dag_t *);
rpl_rank_t (*calculate_rank)(rpl_parent_t *, rpl_rank_t);
@ -220,6 +228,8 @@ struct rpl_instance {
/* my last registered DAO that I might be waiting for ACK on */
uint8_t my_dao_seqno;
uint8_t my_dao_transmissions;
/* this is intended to keep track if this instance have a route downward */
uint8_t has_downward_route;
rpl_rank_t max_rankinc;
rpl_rank_t min_hoprankinc;
uint16_t lifetime_unit; /* lifetime in seconds = l_u * d_l */
@ -302,11 +312,11 @@ enum rpl_mode rpl_get_mode(void);
/**
* Get the RPL's best guess on if we have downward link or not.
* Get the RPL's best guess on if we have downward route or not.
*
* \retval 1 if we have a downward link, 0 if not.
* \retval 1 if we have a downward route from RPL Root, 0 if not.
*/
int rpl_has_downward_link(void);
int rpl_has_downward_route(void);
/*---------------------------------------------------------------------------*/
#endif /* RPL_H */

2
regression-tests/21-large-rpl/code/node/client.c
View file

@ -100,7 +100,7 @@ PROCESS_THREAD(http_example_process, ev, data)
while(1) {
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
etimer_reset(&et);
if(connect && rpl_has_downward_link()) {
if(connect && rpl_has_downward_route()) {
printf("#A color=green\n");
http_socket_get(&s, "http://www.contiki-os.org/", 0, 0,
callback, NULL);