deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

More flexibility for the fallback interface.

Browse source 
When there's a failure to send a packet in the fallback interface the
destination is unreachable and therefore the source should be notified.
This commit is contained in:
lebrush 2013-05-15 12:01:38 +02:00 • committed by Valentin Sawadski
parent aecb591d12
commit b3f6019924
2 changed files with 17 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

11
core/net/ip/tcpip.c
View file

@ -586,7 +586,16 @@ tcpip_ipv6_output(void)
/* This should be copied from the ext header... */
UIP_IP_BUF->proto = proto;
}
UIP_FALLBACK_INTERFACE.output();
/* Inform the other end that the destination is not reachable. If it's
* not informed routes might get lost unexpectedly until there's a need
* to send a new packet to the peer */
if(UIP_FALLBACK_INTERFACE.output() < 0) {
PRINTF("FALLBACK: output error. Reporting DST UNREACH\n");
uip_icmp6_error_output(ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR, 0);
uip_flags = 0;
tcpip_ipv6_output();
return;
}
#else
PRINTF("tcpip_ipv6_output: Destination off-link but no route\n");
#endif /* !UIP_FALLBACK_INTERFACE */