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Add support of RPL Option (http://tools.ietf.org/html/draft-ietf-6man-rpl-option-03):

Browse source 
- Auto-insersion when forwarding messages
- Delete messages with 2 rank errors
Not supported yet :
- Routing depending on InstanceID
- DAO inconsistency loop recovery
- Full UDP or TCP support (Bugs in µIPv6)
- Real Option Type (TBD by IANA)
This commit is contained in:
Vincent Brillault 2011-07-11 16:53:02 +02:00
parent dc9cbe647d
commit f4b804ed9f
4 changed files with 157 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

52
core/net/uip6.c
View file

@ -96,6 +96,8 @@
#if UIP_CONF_IPV6_RPL
void uip_rpl_input(void);
void rpl_update_header_empty(void);
int rpl_verify_header(int uip_ext_opt_offset);
#endif /* UIP_CONF_IPV6_RPL */
#if UIP_LOGGING == 1
@ -163,6 +165,9 @@ u8_t uip_ext_opt_offset = 0;
#define UIP_DESTO_BUF ((struct uip_desto_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#define UIP_EXT_HDR_OPT_BUF ((struct uip_ext_hdr_opt *)&uip_buf[uip_l2_l3_hdr_len + uip_ext_opt_offset])
#define UIP_EXT_HDR_OPT_PADN_BUF ((struct uip_ext_hdr_opt_padn *)&uip_buf[uip_l2_l3_hdr_len + uip_ext_opt_offset])
#if UIP_CONF_IPV6_RPL
#define UIP_EXT_HDR_OPT_RPL_BUF ((struct uip_ext_hdr_opt_rpl *)&uip_buf[uip_l2_l3_hdr_len + uip_ext_opt_offset])
#endif /* UIP_CONF_IPV6_RPL */
#define UIP_ICMP6_ERROR_BUF ((struct uip_icmp6_error *)&uip_buf[uip_l2_l3_icmp_hdr_len])
/** @} */
/** \name Buffer variables
@ -827,6 +832,16 @@ ext_hdr_options_process() {
PRINTF("Processing PADN option\n");
uip_ext_opt_offset += UIP_EXT_HDR_OPT_PADN_BUF->opt_len + 2;
break;
#if UIP_CONF_IPV6_RPL
case UIP_EXT_HDR_OPT_RPL:
PRINTF("Processing RPL option\n");
if (rpl_verify_header(uip_ext_opt_offset)) {
PRINTF("RPL Option Error : Dropping Packet");
return 1;
}
uip_ext_opt_offset += (UIP_EXT_HDR_OPT_RPL_BUF->opt_len) + 2;
return 0;
#endif /* UIP_CONF_IPV6_RPL */
default:
/*
* check the two highest order bits of the option
@ -1078,6 +1093,35 @@ uip_process(u8_t flag)
}
#if UIP_CONF_ROUTER
/*
* Next header field processing. In IPv6, we can have extension headers,
* if present, the Hop-by-Hop Option must be processed before forwarding
* the packet.
*/
uip_next_hdr = &UIP_IP_BUF->proto;
uip_ext_len = 0;
uip_ext_bitmap = 0;
if (*uip_next_hdr == UIP_PROTO_HBHO) {
#if UIP_CONF_IPV6_CHECKS
uip_ext_bitmap |= UIP_EXT_HDR_BITMAP_HBHO;
#endif /*UIP_CONF_IPV6_CHECKS*/
switch(ext_hdr_options_process()) {
case 0:
/*continue*/
uip_next_hdr = &UIP_EXT_BUF->next;
uip_ext_len += (UIP_EXT_BUF->len << 3) + 8;
break;
case 1:
/*silently discard*/
goto drop;
case 2:
/* send icmp error message (created in ext_hdr_options_process)
* and discard*/
goto send;
}
}
/* TBD Some Parameter problem messages */
if(!uip_ds6_is_my_addr(&UIP_IP_BUF->destipaddr) &&
!uip_ds6_is_my_maddr(&UIP_IP_BUF->destipaddr)) {
@ -1101,6 +1145,11 @@ uip_process(u8_t flag)
UIP_STAT(++uip_stat.ip.drop);
goto send;
}
#if UIP_CONF_IPV6_RPL
rpl_update_header_empty();
#endif /* UIP_CONF_IPV6_RPL */
UIP_IP_BUF->ttl = UIP_IP_BUF->ttl - 1;
PRINTF("Forwarding packet to ");
PRINT6ADDR(&UIP_IP_BUF->destipaddr);
@ -1131,7 +1180,6 @@ uip_process(u8_t flag)
UIP_STAT(++uip_stat.ip.drop);
goto drop;
}
#endif /* UIP_CONF_ROUTER */
/*
* Next header field processing. In IPv6, we can have extension headers,
@ -1140,6 +1188,8 @@ uip_process(u8_t flag)
uip_next_hdr = &UIP_IP_BUF->proto;
uip_ext_len = 0;
uip_ext_bitmap = 0;
#endif /* UIP_CONF_ROUTER */
while(1) {
switch(*uip_next_hdr){
#if UIP_TCP