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api_msg.c: Partly add support for IPv6 mapped IPv4 addresses

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- lwip_netconn_do_getaddr(): Convert IPv4 addresses to IPv6 mapped IPv4 addresses
- lwip_netconn_do_send(): Support IPv6 mapped IPv4 addresses
- Not done: connect(), bind()
This commit is contained in:
Dirk Ziegelmeier 2016-10-31 19:28:11 +01:00
parent c1eb6d8aa4
commit 2f37dc0606
1 changed files with 22 additions and 1 deletions
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23
src/api/api_msg.c
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@ -43,6 +43,7 @@
#include "lwip/priv/api_msg.h"
#include "lwip/ip.h"
#include "lwip/ip_addr.h"
#include "lwip/udp.h"
#include "lwip/tcp.h"
#include "lwip/raw.h"
@ -1397,10 +1398,18 @@ lwip_netconn_do_send(void *m)
} else {
msg->err = ERR_CONN;
if (msg->conn->pcb.tcp != NULL) {
#if LWIP_IPV4 && LWIP_IPV6
/* Dual-stack: Unmap IPv6 mapped IPv4 addresses */
if(NETCONNTYPE_ISIPV6(netconn_type(msg->conn)) && IP_IS_V4_VAL(msg->msg.b->addr)) {
unmap_ipv6_mapped_ipv4(&msg->msg.b->addr, &msg->msg.b->addr);
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
switch (NETCONNTYPE_GROUP(msg->conn->type)) {
#if LWIP_RAW
case NETCONN_RAW:
if (ip_addr_isany(&msg->msg.b->addr)) {
if (ip_addr_isany(&msg->msg.b->addr) || IP_IS_ANY_TYPE_VAL(msg->msg.b->addr)) {
msg->err = raw_send(msg->conn->pcb.raw, msg->msg.b->p);
} else {
msg->err = raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, &msg->msg.b->addr);
@ -1710,6 +1719,18 @@ lwip_netconn_do_getaddr(void *m)
ip_addr_copy(API_EXPR_DEREF(msg->msg.ad.ipaddr),
msg->conn->pcb.ip->remote_ip);
}
#if LWIP_IPV4 && LWIP_IPV6
/* Dual-stack: Map IPv4 addresses to IPv6 */
if(NETCONNTYPE_ISIPV6(netconn_type(msg->conn)) && IP_IS_V4_VAL(API_EXPR_DEREF(msg->msg.ad.ipaddr))) {
ip4_addr_t ip4;
ip4_addr_copy(ip4, *ip_2_ip4(&API_EXPR_DEREF(msg->msg.ad.ipaddr)));
ip4_2_ipv6_mapped_ipv4(ip_2_ip6(&API_EXPR_DEREF(msg->msg.ad.ipaddr)), &ip4);
IP_SET_TYPE_VAL(API_EXPR_DEREF(msg->msg.ad.ipaddr), IPADDR_TYPE_V6);
}
#endif /* LWIP_IPV4 && LWIP_IPV6 */
msg->err = ERR_OK;
switch (NETCONNTYPE_GROUP(msg->conn->type)) {
#if LWIP_RAW