osmith has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-ggsn/+/36031?usp=email )
Change subject: kernel-gtp: support IPv6 on outer layer
......................................................................
kernel-gtp: support IPv6 on outer layer
Related: OS#1953, OS#6096
Change-Id: I257fff1dcd9d030a7f9ea936b2693a3f13208230
---
M ggsn/ggsn.c
M gtp/gsn.c
M gtp/gsn.h
M gtp/gtp.c
M lib/in46_addr.c
M lib/in46_addr.h
M sgsnemu/sgsnemu.c
M tests/gtp/Makefile.am
8 files changed, 78 insertions(+), 41 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ggsn refs/changes/31/36031/1
diff --git a/ggsn/ggsn.c b/ggsn/ggsn.c
index 918d565..cec043d 100644
--- a/ggsn/ggsn.c
+++ b/ggsn/ggsn.c
@@ -822,7 +822,7 @@
LOGPGGSN(LOGL_INFO, ggsn, "Starting GGSN\n");
/* Start libgtp listener */
- if (gtp_new(&ggsn->gsn, ggsn->cfg.state_dir, &ggsn->cfg.listen_addr.v4,
GTP_MODE_GGSN)) {
+ if (gtp_new(&ggsn->gsn, ggsn->cfg.state_dir, &ggsn->cfg.listen_addr,
GTP_MODE_GGSN)) {
LOGPGGSN(LOGL_ERROR, ggsn, "Failed to create GTP: %s\n",
strerror(errno));
return -1;
}
@@ -830,11 +830,9 @@
/* patch in different addresses to use (in case we're behind NAT, the
listen
* address is different from what we advertise externally) */
- if (ggsn->cfg.gtpc_addr.v4.s_addr)
- ggsn->gsn->gsnc = ggsn->cfg.gtpc_addr.v4;
+ ggsn->gsn->gsnc = ggsn->cfg.gtpc_addr;
- if (ggsn->cfg.gtpu_addr.v4.s_addr)
- ggsn->gsn->gsnu = ggsn->cfg.gtpu_addr.v4;
+ ggsn->gsn->gsnu = ggsn->cfg.gtpu_addr;
/* Register File Descriptors */
osmo_fd_setup(&ggsn->gtp_fd0, ggsn->gsn->fd0, OSMO_FD_READ,
ggsn_gtp_fd_cb, ggsn, 0);
diff --git a/gtp/gsn.c b/gtp/gsn.c
index eb15eaf..1109d66 100644
--- a/gtp/gsn.c
+++ b/gtp/gsn.c
@@ -64,11 +64,6 @@
/* Error reporting functions */
-#define LOGP_WITH_ADDR(ss, level, addr, fmt, args...) \
- LOGP(ss, level, "addr(%s:%d) " fmt, \
- inet_ntoa((addr).sin_addr), htons((addr).sin_port), \
- ##args);
-
static const struct rate_ctr_desc gsn_ctr_description[] = {
[GSN_CTR_ERR_SOCKET] = { "err:socket", "Socket error" },
[GSN_CTR_ERR_READFROM] = { "err:readfrom", "readfrom() errors" },
@@ -423,10 +418,10 @@
talloc_free(filename);
}
-static int create_and_bind_socket(const char *name, struct gsn_t *gsn, int
*fd, int domain,
- const struct in_addr *listen, int port)
+static int create_and_bind_socket(const char *name, struct gsn_t *gsn, int
*fd, const struct in46_addr *listen,
+ int port)
{
- struct sockaddr_in addr;
+ int domain = in46a_to_af(listen);
int type = SOCK_DGRAM;
int protocol = 0;
@@ -440,29 +435,51 @@
return -errno;
}
- memset(&addr, 0, sizeof(addr));
- addr.sin_family = domain;
- addr.sin_addr = *listen;
- addr.sin_port = htons(port);
+ switch (domain) {
+ case AF_INET:
+ {
+ struct sockaddr_in addr = {0};
+ addr.sin_family = AF_INET;
+ addr.sin_addr = listen->v4;
+ addr.sin_port = htons(port);
#if defined(__FreeBSD__) || defined(__APPLE__)
- addr.sin_len = sizeof(addr);
+ addr.sin_len = sizeof(struct addr);
#endif
-
- if (bind(*fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
- rate_ctr_inc2(gsn->ctrg, GSN_CTR_ERR_SOCKET);
- LOGP_WITH_ADDR(DLGTP, LOGL_ERROR, addr,
- "%s bind(fd=%d) failed: Error = %s\n",
- name, *fd, strerror(errno));
- return -errno;
+ if (bind(*fd, &addr, sizeof(addr)) < 0)
+ goto bind_err;
+ break;
+ }
+ case AF_INET6:
+ {
+ struct sockaddr_in6 addr = {0};
+ addr.sin6_family = AF_INET6;
+ addr.sin6_addr = listen->v6;
+ addr.sin6_port = htons(port);
+#if defined(__FreeBSD__) || defined(__APPLE__)
+ addr.sin6_len = sizeof(struct addr);
+#endif
+ if (bind(*fd, &addr, sizeof(addr)) < 0)
+ goto bind_err;
+ break;
+ }
+ default:
+ OSMO_ASSERT(false);
+ break;
}
return 0;
+
+bind_err:
+ rate_ctr_inc2(gsn->ctrg, GSN_CTR_ERR_SOCKET);
+ LOGP(DLGTP, LOGL_ERROR,
+ "%s bind(fd=%d, addr=(%s:%d)) failed: Error = %s\n",
+ name, *fd, in46a_ntoa(listen), port, strerror(errno));
+ return -errno;
}
-int gtp_new(struct gsn_t **gsn, char *statedir, struct in_addr *listen,
- int mode)
+int gtp_new(struct gsn_t **gsn, char *statedir, struct in46_addr *listen, int
mode)
{
- LOGP(DLGTP, LOGL_NOTICE, "GTP: gtp_newgsn() started at %s\n",
inet_ntoa(*listen));
+ LOGP(DLGTP, LOGL_NOTICE, "GTP: gtp_newgsn() started at %s\n",
in46a_ntoa(listen));
*gsn = calloc(sizeof(struct gsn_t), 1); /* TODO */
@@ -511,15 +528,15 @@
(*gsn)->fd1u = -1;
/* Create GTP version 0 socket */
- if (create_and_bind_socket("GTPv0", *gsn, &(*gsn)->fd0, AF_INET,
listen, GTP0_PORT) < 0)
+ if (create_and_bind_socket("GTPv0", *gsn, &(*gsn)->fd0, listen,
GTP0_PORT) < 0)
goto error;
/* Create GTP version 1 control plane socket */
- if (create_and_bind_socket("GTPv1 control plane", *gsn, &(*gsn)->fd1c,
AF_INET, listen, GTP1C_PORT) < 0)
+ if (create_and_bind_socket("GTPv1 control plane", *gsn, &(*gsn)->fd1c,
listen, GTP1C_PORT) < 0)
goto error;
/* Create GTP version 1 user plane socket */
- if (create_and_bind_socket("GTPv1 user plane", *gsn, &(*gsn)->fd1u,
AF_INET, listen, GTP1U_PORT) < 0)
+ if (create_and_bind_socket("GTPv1 user plane", *gsn, &(*gsn)->fd1u,
listen, GTP1U_PORT) < 0)
goto error;
/* Start internal queue timer */
diff --git a/gtp/gsn.h b/gtp/gsn.h
index 8e47ce3..df2f745 100644
--- a/gtp/gsn.h
+++ b/gtp/gsn.h
@@ -18,6 +18,7 @@
#include <osmocom/core/tdef.h>
#include <osmocom/core/rate_ctr.h>
+#include "../lib/in46_addr.h"
#include "pdp.h"
#define GTP_MODE_GGSN 1
@@ -77,8 +78,8 @@
int fd1c; /* GTP1 control plane file descriptor */
int fd1u; /* GTP0 user plane file descriptor */
int mode; /* Mode of operation: GGSN or SGSN */
- struct in_addr gsnc; /* IP address of this gsn for signalling */
- struct in_addr gsnu; /* IP address of this gsn for user traffic */
+ struct in46_addr gsnc; /* IP address of this gsn for signalling */
+ struct in46_addr gsnu; /* IP address of this gsn for user traffic */
/* Parameters related to signalling messages */
uint16_t seq_next; /* Next sequence number to use */
@@ -117,8 +118,7 @@
/* External API functions */
-extern int gtp_new(struct gsn_t **gsn, char *statedir, struct in_addr *listen,
- int mode);
+extern int gtp_new(struct gsn_t **gsn, char *statedir, struct in46_addr
*listen, int mode);
extern int gtp_free(struct gsn_t *gsn);
diff --git a/gtp/gtp.c b/gtp/gtp.c
index 43e56b5..86c456f 100644
--- a/gtp/gtp.c
+++ b/gtp/gtp.c
@@ -1297,8 +1297,8 @@
}
/* Initialize our own IP addresses */
- in_addr2gsna(&pdp->gsnlc, &gsn->gsnc);
- in_addr2gsna(&pdp->gsnlu, &gsn->gsnu);
+ in46a_to_gsna(&pdp->gsnlc, &gsn->gsnc);
+ in46a_to_gsna(&pdp->gsnlu, &gsn->gsnu);
if (!gtp_pdp_getimsi(gsn, &pdp_old, pdp->imsi, pdp->nsapi)) {
/* Found old pdp with same tid. Now the voodoo begins! */
diff --git a/lib/in46_addr.c b/lib/in46_addr.c
index 648fe7e..d7c194f 100644
--- a/lib/in46_addr.c
+++ b/lib/in46_addr.c
@@ -376,6 +376,14 @@
return 1;
}
+void in46a_to_gsna(struct ul16_t *gsna, const struct in46_addr *src)
+{
+ memset(gsna, 0, sizeof(struct ul16_t));
+ gsna->l = src->len;
+ OSMO_ASSERT(gsna->l <= sizeof(gsna->v));
+ memcpy(gsna->v, &src->v6, gsna->l);
+}
+
void in46a_from_gsna(const struct ul16_t *in, struct in46_addr *dst)
{
dst->len = in->l;
diff --git a/lib/in46_addr.h b/lib/in46_addr.h
index 5589f94..59f58fc 100644
--- a/lib/in46_addr.h
+++ b/lib/in46_addr.h
@@ -40,4 +40,5 @@
return addr->len == sizeof(struct in_addr);
}
+void in46a_to_gsna(struct ul16_t *gsna, const struct in46_addr *src);
void in46a_from_gsna(const struct ul16_t *in, struct in46_addr *dst);
diff --git a/sgsnemu/sgsnemu.c b/sgsnemu/sgsnemu.c
index 7893f4f..f5ed671 100644
--- a/sgsnemu/sgsnemu.c
+++ b/sgsnemu/sgsnemu.c
@@ -59,6 +59,7 @@
#include "../lib/syserr.h"
#include "../lib/netns.h"
#include "../lib/icmpv6.h"
+#include "../lib/in46_addr.h"
#include "../gtp/pdp.h"
#include "../gtp/gtp.h"
#include "cmdline.h"
@@ -117,7 +118,7 @@
int pingsize;
int pingcount;
int pingquiet;
- struct in_addr listen;
+ struct in46_addr listen;
struct in_addr remote;
struct in_addr dns;
int contexts; /* Number of contexts to create */
@@ -459,10 +460,10 @@
args_info.listen_arg);
return -1;
} else {
- memcpy(&options.listen.s_addr, host->h_addr,
- host->h_length);
+ options.listen.len = host->h_length;
+ memcpy(&options.listen.v6, host->h_addr,
host->h_length);
printf("Local IP address is: %s (%s)\n",
- args_info.listen_arg, inet_ntoa(options.listen));
+ args_info.listen_arg,
in46a_ntoa(&options.listen));
}
} else {
SYS_ERR(DSGSN, LOGL_ERROR, 0,
diff --git a/tests/gtp/Makefile.am b/tests/gtp/Makefile.am
index ef69260..4d4d2e3 100644
--- a/tests/gtp/Makefile.am
+++ b/tests/gtp/Makefile.am
@@ -22,11 +22,13 @@
gtpie_test_LDADD = \
$(top_builddir)/lib/debug.o \
$(top_builddir)/gtp/libgtp.la \
+ $(top_builddir)/lib/libmisc.a \
$(LIBOSMOCORE_LIBS) \
$(NULL)
queue_test_LDADD = \
$(top_builddir)/lib/debug.o \
$(top_builddir)/gtp/libgtp.la \
+ $(top_builddir)/lib/libmisc.a \
$(LIBOSMOCORE_LIBS) \
$(NULL)
--
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Gerrit-Project: osmo-ggsn
Gerrit-Branch: master
Gerrit-Change-Id: I257fff1dcd9d030a7f9ea936b2693a3f13208230
Gerrit-Change-Number: 36031
Gerrit-PatchSet: 1
Gerrit-Owner: osmith <[email protected]>
Gerrit-MessageType: newchange
