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Code Releases Activity

Context-Management implementiert

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This commit is contained in:
mlenders 2011-06-14 22:28:56 +02:00
parent 12ab511f29
commit cf0f0e1747
2 changed files with 70 additions and 2 deletions
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64
sys/net/sixlowpan/sixlowpan.c
View File

@ -43,6 +43,7 @@ mutex_t buf_mutex;
char ip_process_buf[IP_PROCESS_STACKSIZE];
char nc_buf[NC_STACKSIZE];
lowpan_context_t contexts[LOWPAN_CONTEXT_MAX];
uint8_t context_len = 0;
/* deliver packet to mac*/
void lowpan_init(ieee_802154_long_t *addr, uint8_t *data){
@ -834,11 +835,70 @@ void lowpan_iphc_decoding(uint8_t *data, uint8_t length,
packet_length = IPV6_HDR_LEN + ipv6_buf->length;
}
uint8_t lowpan_context_len(){
return context_len;
}
void lowpan_context_remove(uint8_t num) {
int i;
int found = 0;
for(i = 0; i < LOWPAN_CONTEXT_MAX; i++){
if(contexts[i].num == num){
context_len--;
// vtimer_remove(&(contexts[i].lifetime)); Not implemented yet?
}
}
for(i; i < LOWPAN_CONTEXT_MAX; i++) {
contexts[i] = contexts[i+1];
}
}
void lowpan_context_remove_cb(void* ptr) {
uint8_t num = (uint8_t)ptr;
lowpan_context_remove(num);
}
uint8_t lowpan_context_update(uint8_t num, uint8_t *prefix,
uint8_t length, uint8_t comp,
uint16_t lifetime){
lowpan_context_t *context;
timex_t lt;
lt.nanoseconds = lifetime * 60 * 1000000;
if (lifetime == 0){
lowpan_context_remove(num);
return 0;
}
if (context_len == LOWPAN_CONTEXT_MAX)
return 2;
context = lowpan_context_num_lookup(num);
if (context == NULL) {
context = &(contexts[context_len++]);
}
context->num = num;
strncpy((char*)context->prefix,(char*)prefix,8);
context->length = length;
context->comp = comp;
vtimer_set_cb(&(context->lifetime),
lt,
lowpan_context_remove_cb,
(void*)num);
return 0;
}
lowpan_context_t * lowpan_context_lookup(ipv6_addr_t *addr){
int i;
for(i = 0; i < LOWPAN_CONTEXT_MAX; i++){
if(memcmp(&(addr->uint8[0]),&(contexts[i].prefix[0]),8) == 0){
return &contexts[i];
if(memcmp(&(addr->uint8[0]),&(contexts[i].prefix[0]),contexts[i].length) == 0){
return &contexts[i];
}
}
return NULL;

8
sys/net/sixlowpan/sixlowpan.h
View File

@ -22,10 +22,14 @@
#define LOWPAN_CONTEXT_MAX 16
#include "transceiver.h"
#include <vtimer.h>
typedef struct lowpan_context_t {
uint8_t num;
uint8_t prefix[8];
uint8_t length;
uint8_t comp;
vtimer_t lifetime;
} lowpan_context_t;
void sixlowpan_init(transceiver_type_t trans, uint8_t r_addr);
@ -36,6 +40,10 @@ void lowpan_iphc_encoding(ieee_802154_long_t *dest);
void lowpan_iphc_decoding(uint8_t *data, uint8_t length,
ieee_802154_long_t *s_laddr,
ieee_802154_long_t *d_laddr);
uint8_t lowpan_context_len();
uint8_t lowpan_context_update(uint8_t num, uint8_t *prefix,
uint8_t length, uint8_t comp,
uint16_t lifetime);
lowpan_context_t * lowpan_context_lookup(ipv6_addr_t *addr);
lowpan_context_t * lowpan_context_num_lookup(uint8_t num);
void lowpan_ipv6_set_dispatch(uint8_t *data);