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Merge pull request #2061 from cetic/pr-nat64-small-updates

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Various updates for NAT64
This commit is contained in:
Antonio Lignan 2017-02-21 21:52:18 +01:00 committed by GitHub
commit f5f13c968c
4 changed files with 38 additions and 36 deletions
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48
core/net/ip/ip64-addr.c
View file

@ -35,6 +35,10 @@
#include <string.h>
#define printf(...)
static uip_ip6addr_t ip64_prefix = {{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0, 0, 0, 0}};
static uint8_t ip64_prefix_len = 96;
/*---------------------------------------------------------------------------*/
void
ip64_addr_copy4(uip_ip4addr_t *dest, const uip_ip4addr_t *src)
@ -56,20 +60,7 @@ ip64_addr_4to6(const uip_ip4addr_t *ipv4addr,
addresses. It returns 0 if it failed to convert the address and
non-zero if it could successfully convert the address. */
/* The IPv4 address is encoded as an IPv6-encoded IPv4 address in
the ::ffff:0000/24 prefix.*/
ipv6addr->u8[0] = 0;
ipv6addr->u8[1] = 0;
ipv6addr->u8[2] = 0;
ipv6addr->u8[3] = 0;
ipv6addr->u8[4] = 0;
ipv6addr->u8[5] = 0;
ipv6addr->u8[6] = 0;
ipv6addr->u8[7] = 0;
ipv6addr->u8[8] = 0;
ipv6addr->u8[9] = 0;
ipv6addr->u8[10] = 0xff;
ipv6addr->u8[11] = 0xff;
uip_ipaddr_copy(ipv6addr, &ip64_prefix);
ipv6addr->u8[12] = ipv4addr->u8[0];
ipv6addr->u8[13] = ipv4addr->u8[1];
ipv6addr->u8[14] = ipv4addr->u8[2];
@ -90,21 +81,7 @@ ip64_addr_6to4(const uip_ip6addr_t *ipv6addr,
returns 0 if it failed to convert the address and non-zero if it
could successfully convert the address. */
/* If the IPv6 address is an IPv6-encoded
IPv4 address (i.e. in the ::ffff:0/8 prefix), we simply use the
IPv4 addresses directly. */
if(ipv6addr->u8[0] == 0 &&
ipv6addr->u8[1] == 0 &&
ipv6addr->u8[2] == 0 &&
ipv6addr->u8[3] == 0 &&
ipv6addr->u8[4] == 0 &&
ipv6addr->u8[5] == 0 &&
ipv6addr->u8[6] == 0 &&
ipv6addr->u8[7] == 0 &&
ipv6addr->u8[8] == 0 &&
ipv6addr->u8[9] == 0 &&
ipv6addr->u8[10] == 0xff &&
ipv6addr->u8[11] == 0xff) {
if(ip64_addr_is_ip64(ipv6addr)) {
ipv4addr->u8[0] = ipv6addr->u8[12];
ipv4addr->u8[1] = ipv6addr->u8[13];
ipv4addr->u8[2] = ipv6addr->u8[14];
@ -121,3 +98,16 @@ ip64_addr_6to4(const uip_ip6addr_t *ipv6addr,
return 0;
}
/*---------------------------------------------------------------------------*/
int
ip64_addr_is_ip64(const uip_ip6addr_t *ipv6addr)
{
return uip_ipaddr_prefixcmp(ipv6addr, &ip64_prefix, ip64_prefix_len);
}
/*---------------------------------------------------------------------------*/
void
ip64_addr_set_prefix(const uip_ip6addr_t *prefix, uint8_t prefix_len)
{
uip_ipaddr_copy(&ip64_prefix, prefix);
ip64_prefix_len = prefix_len;
}
/*---------------------------------------------------------------------------*/

3
core/net/ip/ip64-addr.h
View file

@ -58,6 +58,9 @@ int ip64_addr_6to4(const uip_ip6addr_t *ipv6addr,
int ip64_addr_4to6(const uip_ip4addr_t *ipv4addr,
uip_ip6addr_t *ipv6addr);
int ip64_addr_is_ip64(const uip_ip6addr_t *ipv6addr);
void ip64_addr_set_prefix(const uip_ip6addr_t *prefix, uint8_t prefix_len);
#endif /* IP64_ADDR_H */

1
core/net/ip64/ip64-dhcpc.c
View file

@ -163,7 +163,6 @@ create_msg(CC_REGISTER_ARG struct dhcp_msg *m)
memset(&m->chaddr[s.mac_len], 0, sizeof(m->chaddr) - s.mac_len);
memset(m->sname, 0, sizeof(m->sname));
strcpy((char *)m->sname, "Thingsquare");
memset(m->file, 0, sizeof(m->file));

22
core/net/ip64/ip64-ipv4-dhcp.c
View file

@ -39,6 +39,9 @@
#include <stdio.h>
#define DEBUG DEBUG_NONE
#include "net/ip/uip-debug.h"
PROCESS(ip64_ipv4_dhcp_process, "IPv4 DHCP");
uip_ipaddr_t uip_hostaddr; /* Needed because it is referenced by dhcpc.c */
@ -48,7 +51,7 @@ uip_ipaddr_t uip_hostaddr; /* Needed because it is referenced by dhcpc.c */
void
ip64_ipv4_dhcp_init(void)
{
printf("Starting DHCPv4\n");
printf("IP64: Starting DHCPv4\n");
process_start(&ip64_ipv4_dhcp_process, NULL);
}
/*---------------------------------------------------------------------------*/
@ -58,10 +61,10 @@ PROCESS_THREAD(ip64_ipv4_dhcp_process, ev, data)
ip64_dhcpc_init(&ip64_eth_addr, sizeof(ip64_eth_addr));
printf("Inited\n");
PRINTF("IP64: Inited\n");
ip64_dhcpc_request();
printf("Requested\n");
PRINTF("IP64: Requested\n");
while(1) {
PROCESS_WAIT_EVENT();
@ -78,15 +81,22 @@ void
ip64_dhcpc_configured(const struct ip64_dhcpc_state *s)
{
uip_ip6addr_t ip6dnsaddr;
printf("DHCP Configured with %d.%d.%d.%d\n",
PRINTF("IP64: DHCP Configured with %d.%d.%d.%d\n",
s->ipaddr.u8[0], s->ipaddr.u8[1],
s->ipaddr.u8[2], s->ipaddr.u8[3]);
ip64_set_hostaddr((uip_ip4addr_t *)&s->ipaddr);
ip64_set_netmask((uip_ip4addr_t *)&s->netmask);
ip64_set_draddr((uip_ip4addr_t *)&s->default_router);
ip64_addr_4to6((uip_ip4addr_t *)&s->dnsaddr, &ip6dnsaddr);
// mdns_conf(&ip6dnsaddr);
if(!uip_ip4addr_cmp((uip_ip4addr_t *)&s->dnsaddr, &uip_all_zeroes_addr)) {
/* Note: Currently we assume only one DNS server */
uip_ipaddr_t * dns = uip_nameserver_get(0);
/* Only update DNS entry if it is empty or already IPv4 */
if(uip_is_addr_unspecified(dns) || ip64_addr_is_ip64(dns)) {
ip64_addr_4to6((uip_ip4addr_t *)&s->dnsaddr, &ip6dnsaddr);
uip_nameserver_update(&ip6dnsaddr, uip_ntohs(s->lease_time[0])*65536ul + uip_ntohs(s->lease_time[1]));
}
}
}
/*---------------------------------------------------------------------------*/
void