IPv6 support for user IP
This patch enables the use of IPv6 PDP contexts. The phone will
have to request an IPv6 End-user-Address, and the GGSN will have
to be configured for an IPv6 pool.
The outer transport-layer IP between SGSN and GGSN must still be
IPv4, it is not modified by this patch
Change-Id: I22c3bf32a98e5daf99d6eaeac8c9f95cc7574774
diff --git a/ggsn/ggsn.c b/ggsn/ggsn.c
index 4fb2066..8e7d1e3 100644
--- a/ggsn/ggsn.c
+++ b/ggsn/ggsn.c
@@ -35,6 +35,7 @@
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
+#include <netinet/ip6.h>
#include <arpa/inet.h>
#include <sys/wait.h>
#include <sys/stat.h>
@@ -190,7 +191,7 @@
memcpy(pdp->qos_neg.v, pdp->qos_req.v, pdp->qos_req.l); /* TODO */
pdp->qos_neg.l = pdp->qos_req.l;
- if (pdp_euaton(&pdp->eua, &addr.v4)) {
+ if (in46a_from_eua(&pdp->eua, &addr)) {
addr.v4.s_addr = 0; /* Request dynamic */
}
@@ -199,7 +200,7 @@
return 0; /* Allready in use, or no more available */
}
- pdp_ntoeua(&member->addr.v4, &pdp->eua);
+ in46a_to_eua(&member->addr, &pdp->eua);
pdp->peer = member;
pdp->ipif = tun; /* TODO */
member->peer = pdp;
@@ -224,14 +225,18 @@
struct ippoolm_t *ipm;
struct in46_addr dst;
struct iphdr *iph = (struct iphdr *)pack;
+ struct ip6_hdr *ip6h = (struct ip6_hdr *)pack;
if (iph->version == 4) {
if (len < sizeof(*iph) || len < 4*iph->ihl)
return -1;
dst.len = 4;
dst.v4.s_addr = iph->daddr;
+ } else if (iph->version == 6) {
+ dst.len = 16;
+ dst.v6 = ip6h->ip6_dst;
} else {
- LOGP(DGGSN, LOGL_NOTICE, "non-IPv4 packet received from tun\n");
+ LOGP(DGGSN, LOGL_NOTICE, "non-IPv packet received from tun\n");
return -1;
}