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Bugfix for issue #31 - Proper handling of ad-hoc and 6plane network addresses

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This commit is contained in:
Joseph Henry
2018-09-20 17:51:44 -07:00
parent f9e83bcb59
commit 71ea71e33a
3 changed files with 51 additions and 6 deletions
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39
ext/lwip.patch
View File

@@ -11,6 +11,26 @@ index b7632489..786a294e 100644
#include "lwip/opt.h"
#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */
diff --git a/src/core/ipv6/nd6.c b/src/core/ipv6/nd6.c
index 0b367181..2a5b77d4 100644
--- a/src/core/ipv6/nd6.c
+++ b/src/core/ipv6/nd6.c
@@ -1361,8 +1361,13 @@ nd6_is_prefix_in_netif(const ip6_addr_t *ip6addr, struct netif *netif)
}
/* Check to see if address prefix matches a (manually?) configured address. */
for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
- if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) &&
- ip6_addr_netcmp(ip6addr, netif_ip6_addr(netif, i))) {
+ int prefix_match = 0;
+ if (ip6_addr_is_zt_6plane(ip6addr) || ip6_addr_is_zt_adhoc(ip6addr)) {
+ prefix_match = ip6_addr_6plane_cmp(ip6addr, netif_ip6_addr(netif, i));
+ } else {
+ prefix_match = ip6_addr_netcmp(ip6addr, netif_ip6_addr(netif, i));
+ }
+ if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && prefix_match) {
return 1;
}
}
diff --git a/src/include/lwip/errno.h b/src/include/lwip/errno.h
index 641cffb0..cec43f7f 100644
--- a/src/include/lwip/errno.h
@@ -28,3 +48,22 @@ index 641cffb0..cec43f7f 100644
#endif
#else /* LWIP_PROVIDE_ERRNO */
diff --git a/src/include/lwip/ip6_addr.h b/src/include/lwip/ip6_addr.h
index ee381aeb..b879f212 100644
--- a/src/include/lwip/ip6_addr.h
+++ b/src/include/lwip/ip6_addr.h
@@ -133,6 +133,14 @@ typedef struct ip6_addr ip6_addr_t;
#define ip6_addr_netcmp(addr1, addr2) (((addr1)->addr[0] == (addr2)->addr[0]) && \
((addr1)->addr[1] == (addr2)->addr[1]))
+#define ip6_addr_is_zt_6plane(addr1) (((addr1)->addr[0] & PP_HTONL(0xffffffffUL)) == PP_HTONL(0xfc937e7fUL) && \
+ ((addr1)->addr[1] & PP_HTONL(0xff000000UL)) == PP_HTONL(0x72000000UL))
+
+#define ip6_addr_is_zt_adhoc(addr1) (((addr1)->addr[0] & PP_HTONL(0xffff0000UL)) == PP_HTONL(0xfce90000UL))
+
+#define ip6_addr_6plane_cmp(addr1, addr2) (((addr1)->addr[0] == (addr2)->addr[0]) && \
+ ((addr1)->addr[1] & PP_HTONL(0xff000000UL)) == ((addr2)->addr[1] & PP_HTONL(0xff000000UL)))
+
#define ip6_addr_cmp(addr1, addr2) (((addr1)->addr[0] == (addr2)->addr[0]) && \
((addr1)->addr[1] == (addr2)->addr[1]) && \
((addr1)->addr[2] == (addr2)->addr[2]) && \

11
include/lwipopts.h
View File

@@ -86,10 +86,13 @@
*/
#include "lwip/debug.h"
//#define LWIP_IPV6_MLD 1
//#define LWIP_IPV6_AUTOCONFIG 1
//#define LWIP_ICMP6 1
//#define LWIP_IPV6_NUM_ADDRESSES 6
#define LWIP_IPV6_AUTOCONFIG 1
// #define LWIP_IPV6_MLD 1
// #define LWIP_ICMP6 1
// #define LWIP_IPV6_NUM_ADDRESSES 3
// #define LWIP_ND6_MAX_MULTICAST_SOLICIT 3
// #define LWIP_IPV6_SEND_ROUTER_SOLICIT 0
// IP Protocol version
#define LWIP_NETIF_STATUS_CALLBACK 1

7
src/lwIP.cpp
View File

@@ -380,7 +380,7 @@ static err_t netif_init_6(struct netif *netif)
{
netif->hwaddr_len = 6;
netif->name[0] = 'e';
netif->name[1] = '0'+lwipInterfacesCount;
netif->name[1] = '0'+(char)lwipInterfacesCount;
netif->linkoutput = lwip_eth_tx;
netif->output = etharp_output;
netif->output_ip6 = ethip6_output;
@@ -417,9 +417,12 @@ void lwip_init_interface(void *tapref, const ZeroTier::MAC &mac, const ZeroTier:
{
static ip6_addr_t ipaddr;
memcpy(&(ipaddr.addr), ip.rawIpData(), sizeof(ipaddr.addr));
lwipdev->ip6_autoconfig_enabled = 1;
netif_add(lwipdev, NULL, NULL, NULL, NULL, netif_init_6, tcpip_input);
netif_ip6_addr_set(lwipdev, 1, &ipaddr);
netif_ip6_addr_set(lwipdev, 1, &ipaddr);
lwipdev->state = tapref;
netif_create_ip6_linklocal_address(lwipdev, 1);
netif_ip6_addr_set_state(lwipdev, 0, IP6_ADDR_TENTATIVE);
netif_ip6_addr_set_state(lwipdev, 1, IP6_ADDR_TENTATIVE);
netif_set_status_callback(lwipdev, netif_status_callback);
netif_set_default(lwipdev);