Apple-2-SW/contiki
1
0
Fork 0
mirror of https://github.com/oliverschmidt/contiki.git synced 2024-12-22 10:30:13 +00:00
Code Issues Projects Releases Wiki Activity

Merge pull request #1750 from yatch/pr/improve-rpl-ext-hdr

Browse Source 
Improve RPL extension headers handling
This commit is contained in:
Simon Duquennoy 2016-06-29 10:38:17 +02:00 committed by GitHub
commit 5eb022fdd8
1 changed files with 28 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
core/net/rpl/rpl-ext-header.c
View File

@ -195,22 +195,19 @@ rpl_srh_get_next_hop(uip_ipaddr_t *ipaddr)
/* Look for routing header */
while(uip_next_hdr != NULL && *uip_next_hdr != UIP_PROTO_ROUTING) {
switch(*uip_next_hdr) {
case UIP_PROTO_TCP:
case UIP_PROTO_UDP:
case UIP_PROTO_ICMP6:
case UIP_PROTO_NONE:
uip_next_hdr = NULL;
break;
case UIP_PROTO_HBHO:
case UIP_PROTO_DESTO:
case UIP_PROTO_FRAG:
/*
* As per RFC 2460, only the Hop-by-Hop Options header and
* Destination Options header can appear before the Routing
* header.
*/
/* Move to next header */
if(uip_next_hdr != &UIP_IP_BUF->proto) {
uip_ext_len += (UIP_EXT_BUF->len << 3) + 8;
}
uip_next_hdr = &UIP_EXT_BUF->next;
uip_ext_len += (UIP_EXT_BUF->len << 3) + 8;
break;
default:
uip_next_hdr = NULL;
break;
}
}
@ -249,22 +246,19 @@ rpl_process_srh_header(void)
/* Look for routing header */
while(uip_next_hdr != NULL && *uip_next_hdr != UIP_PROTO_ROUTING) {
switch(*uip_next_hdr) {
case UIP_PROTO_TCP:
case UIP_PROTO_UDP:
case UIP_PROTO_ICMP6:
case UIP_PROTO_NONE:
uip_next_hdr = NULL;
break;
case UIP_PROTO_HBHO:
case UIP_PROTO_DESTO:
case UIP_PROTO_FRAG:
/*
* As per RFC 2460, only the Hop-by-Hop Options header and
* Destination Options header can appear before the Routing
* header.
*/
/* Move to next header */
if(uip_next_hdr != &UIP_IP_BUF->proto) {
uip_ext_len += (UIP_EXT_BUF->len << 3) + 8;
}
uip_next_hdr = &UIP_EXT_BUF->next;
uip_ext_len += (UIP_EXT_BUF->len << 3) + 8;
break;
default:
uip_next_hdr = NULL;
break;
}
}
@ -665,11 +659,6 @@ rpl_remove_header(void)
/* Look for hop-by-hop and routing headers */
while(uip_next_hdr != NULL) {
switch(*uip_next_hdr) {
case UIP_PROTO_TCP:
case UIP_PROTO_UDP:
case UIP_PROTO_ICMP6:
case UIP_PROTO_NONE:
return;
case UIP_PROTO_HBHO:
case UIP_PROTO_ROUTING:
/* Remove hop-by-hop and routing headers */
@ -684,13 +673,20 @@ rpl_remove_header(void)
PRINTF("RPL: Removing RPL extension header (type %u, len %u)\n", *uip_next_hdr, rpl_ext_hdr_len);
memmove(UIP_EXT_BUF, ((uint8_t *)UIP_EXT_BUF) + rpl_ext_hdr_len, uip_len - UIP_IPH_LEN);
break;
default:
case UIP_PROTO_DESTO:
/*
* As per RFC 2460, any header other than the Destination
* Options header does not appear between the Hop-by-Hop
* Options header and the Routing header.
*
* We're moving to the next header only if uip_next_hdr has
* UIP_PROTO_DESTO. Otherwise, we'll return.
*/
/* Move to next header */
if(uip_next_hdr != &UIP_IP_BUF->proto) {
uip_ext_len += (UIP_EXT_BUF->len << 3) + 8;
}
uip_next_hdr = &UIP_EXT_BUF->next;
break;
uip_ext_len += (UIP_EXT_BUF->len << 3) + 8;
default:
return;
}
}
}