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Merge pull request #1548 from simonduq/pr/traceroute

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uip6, icmp6 and ext header handling fixes: traceroute now working!
This commit is contained in:
Nicolas Tsiftes 2016-03-11 14:14:26 +01:00
commit c476194004
2 changed files with 16 additions and 16 deletions
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20
core/net/ipv6/uip-icmp6.c
View file

@ -206,23 +206,22 @@ echo_request_input(void)
/*---------------------------------------------------------------------------*/
void
uip_icmp6_error_output(uint8_t type, uint8_t code, uint32_t param) {
/* check if originating packet is not an ICMP error*/
if (uip_ext_len) {
if(UIP_EXT_BUF->next == UIP_PROTO_ICMP6 && UIP_ICMP_BUF->type < 128){
/* check if originating packet is not an ICMP error */
if(uip_ext_len) {
if(UIP_EXT_BUF->next == UIP_PROTO_ICMP6 && UIP_ICMP_BUF->type < 128) {
uip_clear_buf();
return;
}
} else {
if(UIP_IP_BUF->proto == UIP_PROTO_ICMP6 && UIP_ICMP_BUF->type < 128){
if(UIP_IP_BUF->proto == UIP_PROTO_ICMP6 && UIP_ICMP_BUF->type < 128) {
uip_clear_buf();
return;
}
}
#if UIP_CONF_IPV6_RPL
uip_ext_len = rpl_invert_header();
#else /* UIP_CONF_IPV6_RPL */
rpl_remove_header();
#else
uip_ext_len = 0;
#endif /* UIP_CONF_IPV6_RPL */
@ -231,8 +230,9 @@ uip_icmp6_error_output(uint8_t type, uint8_t code, uint32_t param) {
uip_len += UIP_IPICMPH_LEN + UIP_ICMP6_ERROR_LEN;
if(uip_len > UIP_LINK_MTU)
if(uip_len > UIP_LINK_MTU) {
uip_len = UIP_LINK_MTU;
}
memmove((uint8_t *)UIP_ICMP6_ERROR_BUF + uip_ext_len + UIP_ICMP6_ERROR_LEN,
(void *)UIP_IP_BUF, uip_len - UIP_IPICMPH_LEN - uip_ext_len - UIP_ICMP6_ERROR_LEN);
@ -280,6 +280,10 @@ uip_icmp6_error_output(uint8_t type, uint8_t code, uint32_t param) {
UIP_ICMP_BUF->icmpchksum = 0;
UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
#if UIP_CONF_IPV6_RPL
rpl_insert_header();
#endif /* UIP_CONF_IPV6_RPL */
UIP_STAT(++uip_stat.icmp.sent);
PRINTF("Sending ICMPv6 ERROR message type %d code %d to ", type, code);

12
core/net/ipv6/uip6.c
View file

@ -1473,6 +1473,7 @@ uip_process(uint8_t flag)
udp_input:
remove_ext_hdr();
UIP_IP_BUF->proto = UIP_PROTO_UDP;
PRINTF("Receiving UDP packet\n");
@ -1481,8 +1482,6 @@ uip_process(uint8_t flag)
work. If the application sets uip_slen, it has a packet to
send. */
#if UIP_UDP_CHECKSUMS
uip_len = uip_len - UIP_IPUDPH_LEN;
uip_appdata = &uip_buf[UIP_IPUDPH_LEN + UIP_LLH_LEN];
/* XXX hack: UDP/IPv6 receivers should drop packets with UDP
checksum 0. Here, we explicitly receive UDP packets with checksum
0. This is to be able to debug code that for one reason or
@ -1495,8 +1494,6 @@ uip_process(uint8_t flag)
uip_udpchksum());
goto drop;
}
#else /* UIP_UDP_CHECKSUMS */
uip_len = uip_len - UIP_IPUDPH_LEN;
#endif /* UIP_UDP_CHECKSUMS */
/* Make sure that the UDP destination port number is not zero. */
@ -1528,17 +1525,15 @@ uip_process(uint8_t flag)
PRINTF("udp: no matching connection found\n");
UIP_STAT(++uip_stat.udp.drop);
#if UIP_UDP_SEND_UNREACH_NOPORT
uip_icmp6_error_output(ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
goto send;
#else
goto drop;
#endif
udp_found:
PRINTF("In udp_found\n");
UIP_STAT(++uip_stat.udp.recv);
uip_len = uip_len - UIP_IPUDPH_LEN;
uip_appdata = &uip_buf[UIP_IPUDPH_LEN + UIP_LLH_LEN];
uip_conn = NULL;
uip_flags = UIP_NEWDATA;
uip_sappdata = uip_appdata = &uip_buf[UIP_IPUDPH_LEN + UIP_LLH_LEN];
@ -1593,6 +1588,7 @@ uip_process(uint8_t flag)
tcp_input:
remove_ext_hdr();
UIP_IP_BUF->proto = UIP_PROTO_TCP;
UIP_STAT(++uip_stat.tcp.recv);
PRINTF("Receiving TCP packet\n");