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[sys/net/sixlowpan/sixlownd.h]

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* added ICMPv6 Redirect type to filter it out on the border router

[sys/net/sixlowpan/sixlowedge.c]
* filter for ICMPv6 messages implemented
This commit is contained in:
mlenders 2011-07-24 21:25:47 +02:00
parent 240bbf7562
commit 03da9f0590
2 changed files with 7 additions and 38 deletions
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44
sys/net/sixlowpan/sixlowedge.c
View File

@ -539,45 +539,13 @@ void border_send_ipv6_over_lowpan(struct ipv6_hdr_t *packet, uint8_t aro_flag, u
memset(buffer, 0, BUFFER_SIZE);
memcpy(buffer+LL_HDR_LEN, packet, offset);
/*
if (ipv6_buf->nextheader == PROTO_NUM_ICMPV6) {
icmp_buf = (icmpv6_hdr_t *)(ipv6_buf + IPV6_HDR_LEN);
if (icmp_buf->type == ICMP_RTR_ADV) {
if (abr_count > 0) {
opt_abro_t *opt_abro_buf = (opt_abro_t *)(ipv6_buf + offset);
msg_abr = abr_get_most_current();
opt_abro_buf->type = OPT_ABRO_TYPE;
opt_abro_buf->length = OPT_ABRO_LEN;
opt_abro_buf->version = HTONS(msg_abr->version);
opt_abro_buf->reserved = 0;
memcpy(&(opt_abro_buf->addr), &(msg_abr->abr_addr), sizeof (ipv6_addr_t));
ipv6->length += OPT_ABRO_HDR_LEN;
offset += OPT_ARO_HDR_LEN;
}
if (sixco_flag) {
// TODO: 6CO
}
if (packet->nextheader == PROTO_NUM_ICMPV6) {
struct icmpv6_hdr_t *icmp_buf = (struct icmpv6_hdr_t *)(packet + IPV6_HDR_LEN);
if (icmp_buf->type == ICMP_REDIRECT) {
return;
}
if (icmp_buf->type == ICMP_NBR_ADV && aro_flag) {
if(aro == OPT_ARO){
/* set aro option *//*
opt_aro_t *opt_aro_buf = (opt_abro_t *)(ipv6_buf + offset);
opt_aro_buf->type = OPT_ARO_TYPE;
opt_aro_buf->length = OPT_ARO_LEN;
opt_aro_buf->status = 0; // TODO
opt_aro_buf->reserved1 = 0;
opt_aro_buf->reserved2 = 0;
memcpy(&(opt_aro_buf->eui64), mac_get_eui(dst),8);
ipv6->length += OPT_ARO_HDR_LEN;
offset += OPT_ARO_HDR_LEN;
}
}
// border router should not send neighbor and router solicitations in lowpan
}*/
// Here, other ICMPv6 message types for ND may follow.
}
lowpan_init((ieee_802154_long_t*)&(packet->destaddr.uint16[4]), (uint8_t*)packet);

1
sys/net/sixlowpan/sixlownd.h
View File

@ -37,6 +37,7 @@
#define ICMP_RTR_SOL 133
#define ICMP_NBR_ADV 136
#define ICMP_NBR_SOL 135
#define ICMP_REDIRECT 137 // will be filtered out by the border router
/* stllao option rfc4861 4.6.1 */
#define OPT_STLLAO_MIN_LEN 8
#define OPT_STLLAO_MAX_LEN 16