cellular-infrastructure
/
osmo-msc
mirror of https://gerrit.osmocom.org/osmo-msc
9
0
Fork 0
Code Issues Releases Wiki Activity
osmo-msc/openbsc/tests/gtphub/gtphub_test.c

943 lines
26 KiB
C
Raw Blame History

/* Test the GTP hub */
/* (C) 2015 by sysmocom s.f.m.c. GmbH
* All Rights Reserved
*
* Author: Neels Hofmeyr <nhofmeyr@sysmcom.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/application.h>
#include <openbsc/debug.h>
#include <openbsc/gtphub.h>
#include <gtp.h>
#include <gtpie.h>
#define EXPIRE_ALL ((60 * GTPH_TEI_MAPPING_EXPIRY_MINUTES) + 1)
#define ZERO_STRUCT(struct_pointer) memset(struct_pointer, '\0', sizeof(*(struct_pointer)))
#define LVL2_ASSERT(exp) LVL2_ASSERT_R(exp, return 0)
#define LVL2_ASSERT_R(exp, ret) \
if (!(exp)) { \
fprintf(stderr, "LVL2 Assert failed %s %s:%d\n", #exp, __FILE__, __LINE__); \
osmo_generate_backtrace(); \
ret; \
}
/* Convenience makro, note: only within this C file. */
#define LOG(label) \
{ LOGP(DGTPHUB, LOGL_NOTICE, "\n\n" label "\n"); \
printf(label "\n"); }
void gtphub_init(struct gtphub *hub);
void *osmo_gtphub_ctx;
/* TODO copied from libosmo-abis/src/subchan_demux.c, remove dup */
static int llist_len(struct llist_head *head)
{
struct llist_head *entry;
int i = 0;
llist_for_each(entry, head)
i++;
return i;
}
static void nr_mapping_free(struct expiring_item *e)
{
struct nr_mapping *m = container_of(e, struct nr_mapping,
expiry_entry);
nr_mapping_del(m);
talloc_free(m);
}
static struct nr_mapping *nr_mapping_alloc(void)
{
struct nr_mapping *m;
m = talloc(osmo_gtphub_ctx, struct nr_mapping);
nr_mapping_init(m);
m->expiry_entry.del_cb = nr_mapping_free;
return m;
}
static struct nr_mapping *nr_map_have(struct nr_map *map, void *origin, nr_t orig, time_t now)
{
struct nr_mapping *mapping;
mapping = nr_map_get(map, origin, orig);
if (!mapping) {
mapping = nr_mapping_alloc();
mapping->origin = origin;
mapping->orig = orig;
nr_map_add(map, mapping, now);
}
return mapping;
}
static nr_t nr_map_verify(const struct nr_map *map, void *origin, nr_t orig, nr_t expect_repl)
{
struct nr_mapping *m;
m = nr_map_get(map, origin, orig);
if (!m) {
printf("mapping not found for %p %d\n", origin, orig);
return 0;
}
if (m->repl != expect_repl) {
printf("mapping found, but nr mismatches: expect %d, got %d\n",
(int)expect_repl, (int)m->repl);
return 0;
}
return 1;
}
static int nr_map_verify_inv(const struct nr_map *map, nr_t repl,
void *expect_origin, nr_t expect_orig)
{
struct nr_mapping *m;
m = nr_map_get_inv(map, repl);
if (!m) {
printf("mapping not found for %d\n", (int)repl);
return 0;
}
if (m->origin != expect_origin) {
printf("mapping found, but origin mismatches: expect %p, got %p\n",
expect_origin, m->origin);
return 0;
}
if (m->orig != expect_orig) {
printf("mapping found, but nr mismatches: expect %d, got %d\n",
(int)expect_orig, (int)m->orig);
return 0;
}
return 1;
}
static void test_nr_map_basic(void)
{
struct nr_pool _pool;
struct nr_pool *pool = &_pool;
struct nr_map _map;
struct nr_map *map = &_map;
nr_pool_init(pool);
nr_map_init(map, pool, NULL);
OSMO_ASSERT(llist_empty(&map->mappings));
#define TEST_N_HALF 100
#define TEST_N (2*TEST_N_HALF)
#define TEST_I 123
uint32_t i, check_i;
uint32_t m[TEST_N];
struct nr_mapping *mapping;
/* create half of TEST_N mappings from one origin */
void *origin1 = (void*)0x1234;
for (i = 0; i < TEST_N_HALF; i++) {
nr_t orig = TEST_I + i;
mapping = nr_map_have(map, origin1, orig, 0);
m[i] = mapping->repl;
OSMO_ASSERT(m[i] != 0);
OSMO_ASSERT(llist_len(&map->mappings) == (i+1));
for (check_i = 0; check_i < i; check_i++)
OSMO_ASSERT(m[check_i] != m[i]);
}
OSMO_ASSERT(llist_len(&map->mappings) == TEST_N_HALF);
/* create another TEST_N mappings with the same original numbers, but
* from a different origin */
void *origin2 = (void*)0x5678;
for (i = 0; i < TEST_N_HALF; i++) {
int i2 = TEST_N_HALF + i;
nr_t orig = TEST_I + i;
mapping = nr_map_have(map, origin2, orig, 0);
m[i2] = mapping->repl;
OSMO_ASSERT(m[i2] != 0);
OSMO_ASSERT(llist_len(&map->mappings) == (i2+1));
for (check_i = 0; check_i < i2; check_i++)
OSMO_ASSERT(m[check_i] != m[i2]);
}
OSMO_ASSERT(llist_len(&map->mappings) == TEST_N);
/* verify mappings */
for (i = 0; i < TEST_N_HALF; i++) {
nr_t orig = TEST_I + i;
{
OSMO_ASSERT(nr_map_verify(map, origin1, orig, m[i]));
OSMO_ASSERT(nr_map_verify_inv(map, m[i], origin1, orig));
}
{
int i2 = TEST_N_HALF + i;
OSMO_ASSERT(nr_map_verify(map, origin2, orig, m[i2]));
OSMO_ASSERT(nr_map_verify_inv(map, m[i2], origin2, orig));
}
}
/* remove all mappings */
for (i = 0; i < TEST_N_HALF; i++) {
OSMO_ASSERT(llist_len(&map->mappings) == (TEST_N - 2*i));
nr_t orig = TEST_I + i;
nr_mapping_del(nr_map_get(map, origin1, orig));
nr_mapping_del(nr_map_get(map, origin2, orig));
}
OSMO_ASSERT(llist_empty(&map->mappings));
#undef TEST_N
#undef TEST_I
}
static int nr_map_is(struct nr_map *map, const char *str)
{
static char buf[4096];
char *pos = buf;
size_t len = sizeof(buf);
struct nr_mapping *m;
llist_for_each_entry(m, &map->mappings, entry) {
size_t wrote = snprintf(pos, len, "(%d->%d@%d), ",
(int)m->orig,
(int)m->repl,
(int)m->expiry_entry.expiry);
OSMO_ASSERT(wrote < len);
pos += wrote;
len -= wrote;
}
*pos = '\0';
if (strncmp(buf, str, sizeof(buf)) != 0) {
printf("FAILURE: nr_map_is() mismatches expected value:\n"
"expected: \"%s\"\n"
"is: \"%s\"\n",
str, buf);
return 0;
}
return 1;
}
static void test_expiry(void)
{
struct expiry expiry;
struct nr_pool pool;
struct nr_map map;
int i;
expiry_init(&expiry, 30);
nr_pool_init(&pool);
nr_map_init(&map, &pool, &expiry);
OSMO_ASSERT(nr_map_is(&map, ""));
/* tick on empty map */
OSMO_ASSERT(expiry_tick(&expiry, 10000) == 0);
OSMO_ASSERT(nr_map_is(&map, ""));
#define MAP1 \
"(10->1@10040), " \
""
#define MAP2 \
"(20->2@10050), " \
"(21->3@10051), " \
"(22->4@10052), " \
"(23->5@10053), " \
"(24->6@10054), " \
"(25->7@10055), " \
"(26->8@10056), " \
"(27->9@10057), " \
""
#define MAP3 \
"(420->10@10072), " \
"(421->11@10072), " \
"(422->12@10072), " \
"(423->13@10072), " \
"(424->14@10072), " \
"(425->15@10072), " \
"(426->16@10072), " \
"(427->17@10072), " \
""
/* add mapping at time 10010. */
nr_map_have(&map, 0, 10, 10010);
OSMO_ASSERT(nr_map_is(&map, MAP1));
/* tick on unexpired item. */
OSMO_ASSERT(expiry_tick(&expiry, 10010) == 0);
OSMO_ASSERT(expiry_tick(&expiry, 10011) == 0);
OSMO_ASSERT(nr_map_is(&map, MAP1));
/* Spread mappings at 10020, 10021, ... 10027. */
for (i = 0; i < 8; i++)
nr_map_have(&map, 0, 20 + i, 10020 + i);
OSMO_ASSERT(nr_map_is(&map, MAP1 MAP2));
/* tick on unexpired items. */
OSMO_ASSERT(expiry_tick(&expiry, 10030) == 0);
OSMO_ASSERT(expiry_tick(&expiry, 10039) == 0);
OSMO_ASSERT(nr_map_is(&map, MAP1 MAP2));
/* expire the first item (from 10010). */
OSMO_ASSERT(expiry_tick(&expiry, 10010 + 30) == 1);
OSMO_ASSERT(nr_map_is(&map, MAP2));
/* again nothing to expire */
OSMO_ASSERT(expiry_tick(&expiry, 10041) == 0);
OSMO_ASSERT(nr_map_is(&map, MAP2));
/* Mappings all at the same time. */
for (i = 0; i < 8; i++)
nr_map_have(&map, 0, 420 + i, 10042);
OSMO_ASSERT(nr_map_is(&map, MAP2 MAP3));
/* Eight to expire, were added further above to be chronologically
* correct, at 10020..10027. */
OSMO_ASSERT(expiry_tick(&expiry, 10027 + 30) == 8);
OSMO_ASSERT(nr_map_is(&map, MAP3));
/* again nothing to expire */
OSMO_ASSERT(expiry_tick(&expiry, 10027 + 30) == 0);
OSMO_ASSERT(nr_map_is(&map, MAP3));
/* Eight to expire, from 10042. Now at 10042 + 30: */
OSMO_ASSERT(expiry_tick(&expiry, 10042 + 30) == 8);
OSMO_ASSERT(nr_map_is(&map, ""));
#undef MAP1
#undef MAP2
#undef MAP3
}
char resolve_ggsn_got_imsi[GSM_IMSI_LENGTH];
char resolve_ggsn_got_ni[GSM_APN_LENGTH];
struct osmo_sockaddr resolved_ggsn_addr;
static int resolve_to_ggsn(const char *addr, uint16_t port)
{
LVL2_ASSERT(osmo_sockaddr_init_udp(&resolved_ggsn_addr,
addr, port)
== 0);
return 1;
}
struct osmo_sockaddr resolved_sgsn_addr;
static int resolve_to_sgsn(const char *addr, uint16_t port)
{
LVL2_ASSERT(osmo_sockaddr_init_udp(&resolved_sgsn_addr,
addr, port)
== 0);
return 1;
}
struct osmo_sockaddr sgsn_sender;
static int send_from_sgsn(const char *addr, uint16_t port)
{
LVL2_ASSERT(osmo_sockaddr_init_udp(&sgsn_sender,
addr, port)
== 0);
return 1;
}
struct osmo_sockaddr ggsn_sender;
static int send_from_ggsn(const char *addr, uint16_t port)
{
LVL2_ASSERT(osmo_sockaddr_init_udp(&ggsn_sender,
addr, port)
== 0);
return 1;
}
/* override, requires '-Wl,--wrap=gtphub_resolve_ggsn_addr' */
struct gtphub_peer_port *__real_gtphub_resolve_ggsn_addr(struct gtphub *hub,
const char *imsi_str,
const char *apn_ni_str);
struct gtphub_peer_port *__wrap_gtphub_resolve_ggsn_addr(struct gtphub *hub,
const char *imsi_str,
const char *apn_ni_str)
{
struct gsn_addr resolved_gsna;
uint16_t resolved_port;
OSMO_ASSERT(gsn_addr_from_sockaddr(&resolved_gsna, &resolved_port,
&resolved_ggsn_addr) == 0);
struct gtphub_peer_port *pp;
pp = gtphub_port_have(hub, &hub->to_ggsns[GTPH_PLANE_CTRL],
&resolved_gsna, resolved_port);
printf("- __wrap_gtphub_resolve_ggsn_addr():\n"
" returning GGSN addr from imsi %s ni %s: %s\n",
imsi_str, apn_ni_str, gtphub_port_str(pp));
if (imsi_str) {
strncpy(resolve_ggsn_got_imsi, imsi_str, sizeof(resolve_ggsn_got_imsi));
resolve_ggsn_got_imsi[sizeof(resolve_ggsn_got_imsi) - 1] = '\0';
}
else
strcpy(resolve_ggsn_got_imsi, "(null)");
if (apn_ni_str) {
strncpy(resolve_ggsn_got_ni, apn_ni_str, sizeof(resolve_ggsn_got_ni));
resolve_ggsn_got_ni[sizeof(resolve_ggsn_got_ni) - 1] = '\0';
}
else
strcpy(resolve_ggsn_got_ni, "(null)");
return pp;
}
#define was_resolved_for(IMSI,NI) _was_resolved_for(IMSI, NI, __FILE__, __LINE__)
static int _was_resolved_for(const char *imsi, const char *ni, const char *file, int line)
{
int cmp0 = strncmp(imsi, resolve_ggsn_got_imsi, sizeof(resolve_ggsn_got_imsi));
if (cmp0 != 0) {
printf("\n%s:%d: was_resolved_for(): MISMATCH for IMSI\n"
" expecting: '%s'\n"
" got: '%s'\n\n",
file,
line,
imsi, resolve_ggsn_got_imsi);
}
int cmp1 = strncmp(ni, resolve_ggsn_got_ni, sizeof(resolve_ggsn_got_ni));
if (cmp1 != 0) {
printf("\n%s:%d: was_resolved_for(): MISMATCH for NI\n"
" expecting: '%s'\n"
" got: '%s'\n\n",
file,
line,
ni, resolve_ggsn_got_ni);
}
return (cmp0 == 0) && (cmp1 == 0);
}
/* override, requires '-Wl,--wrap=gtphub_ares_init' */
int __real_gtphub_ares_init(struct gtphub *hub);
int __wrap_gtphub_ares_init(struct gtphub *hub)
{
/* Do nothing. */
return 0;
}
#define buf_len 1024
static uint8_t buf[buf_len];
static uint8_t *reply_buf;
static unsigned int msg(const char *hex)
{
unsigned int l = osmo_hexparse(hex, buf, buf_len);
OSMO_ASSERT(l > 0);
return l;
}
/* Compare static buf to given string constant. The amount of bytes is obtained
* from parsing the GTP header in buf. hex must match an osmo_hexdump() of the
* desired message. Return 1 if size and content match. */
#define reply_is(MSG) _reply_is(MSG, __FILE__, __LINE__)
static int _reply_is(const char *hex, const char *file, int line)
{
struct gtp1_header_long *h = (void*)reply_buf;
int len = ntoh16(h->length) + 8;
const char *dump = osmo_hexdump_nospc(reply_buf, len);
int cmp = strcmp(dump, hex);
if (cmp != 0) {
printf("\n%s:%d: reply_is(): MISMATCH\n"
" expecting:\n'%s'\n"
" got:\n'%s'\n\n",
file,
line,
hex, dump);
int i;
int l = strlen(hex);
int m = strlen(dump);
if (m < l)
l = m;
for (i = 0; i < l; i++) {
if (hex[i] != dump[i]) {
printf("First mismatch at position %d:\n"
" %s\n %s\n", i, hex + i, dump + i);
break;
}
}
}
return cmp == 0;
}
#define same_addr(GOT, EXPECTED) _same_addr((GOT),(EXPECTED), __FILE__, __LINE__)
static int _same_addr(const struct osmo_sockaddr *got,
const struct osmo_sockaddr *expected,
const char *file, int line)
{
int cmp = osmo_sockaddr_cmp(got, expected);
if (!cmp)
return 1;
char buf[256];
printf("\n%s:%d: addr_is(): MISMATCH\n"
" expecting: '%s'\n"
" got: '%s'\n\n",
file, line,
osmo_sockaddr_to_str(expected),
osmo_sockaddr_to_strb(got, buf, sizeof(buf)));
return 0;
}
time_t now;
static struct gtphub _hub;
static struct gtphub *hub = &_hub;
static int setup_test_hub()
{
/* Not really needed, but to make 100% sure... */
ZERO_STRUCT(hub);
gtphub_init(hub);
/* Tell this mock gtphub its local address for this test. */
LVL2_ASSERT(gsn_addr_from_str(&hub->to_sgsns[GTPH_PLANE_CTRL].local_addr,
"127.0.1.1") == 0);
LVL2_ASSERT(gsn_addr_from_str(&hub->to_sgsns[GTPH_PLANE_USER].local_addr,
"127.0.1.2") == 0);
LVL2_ASSERT(gsn_addr_from_str(&hub->to_ggsns[GTPH_PLANE_CTRL].local_addr,
"127.0.2.1") == 0);
LVL2_ASSERT(gsn_addr_from_str(&hub->to_ggsns[GTPH_PLANE_USER].local_addr,
"127.0.2.2") == 0);
hub->restart_counter = 0x23;
now = 345;
LVL2_ASSERT(send_from_sgsn("192.168.42.23", 423));
LVL2_ASSERT(resolve_to_ggsn("192.168.43.34", 2123));
LVL2_ASSERT(send_from_ggsn("192.168.43.34", 321));
LVL2_ASSERT(resolve_to_sgsn("192.168.42.23", 2123));
return 1;
}
static void test_echo(void)
{
LOG("test_echo");
OSMO_ASSERT(setup_test_hub());
now = 123;
const char *gtp_ping_from_sgsn =
"32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */
"01" /* type 01: Echo request */
"0004" /* length of 4 after header TEI */
"00000000" /* header TEI == 0 in Echo */
"abcd" /* some 2 octet sequence nr */
"0000" /* N-PDU 0, no extension header (why is this here?) */
;
const char *gtp_pong_to_sgsn =
"32"
"02" /* type 02: Echo response */
"0006" /* length of 6 after header TEI */
"00000000" /* header TEI == 0 in Echo */
"abcd" /* same sequence nr */
"0000"
"0e23" /* Recovery with restart counter */
;
struct osmo_fd *ggsn_ofd = NULL;
struct osmo_sockaddr to_addr;
int send;
send = gtphub_from_sgsns_handle_buf(hub, GTPH_PLANE_CTRL, &sgsn_sender,
buf, msg(gtp_ping_from_sgsn), now,
&reply_buf, &ggsn_ofd, &to_addr);
OSMO_ASSERT(send > 0);
OSMO_ASSERT(to_addr.l);
OSMO_ASSERT(same_addr(&to_addr, &sgsn_sender));
OSMO_ASSERT(reply_is(gtp_pong_to_sgsn));
struct gtphub_peer_port *sgsn_port =
gtphub_port_find_sa(&hub->to_sgsns[GTPH_PLANE_CTRL],
&sgsn_sender);
/* We don't record Echo peers. */
OSMO_ASSERT(!sgsn_port);
const char *gtp_ping_from_ggsn =
"32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */
"01" /* type 01: Echo request */
"0004" /* length of 4 after header TEI */
"00000000" /* header TEI == 0 in Echo */
"cdef" /* some 2 octet sequence nr */
"0000" /* N-PDU 0, no extension header (why is this here?) */
;
const char *gtp_pong_to_ggsn =
"32"
"02" /* type 02: Echo response */
"0006" /* length of 6 after header TEI */
"00000000" /* header TEI == 0 in Echo */
"cdef" /* same sequence nr */
"0000"
"0e23" /* Recovery with restart counter */
;
struct osmo_fd *sgsn_ofd = NULL;
send = gtphub_from_ggsns_handle_buf(hub, GTPH_PLANE_CTRL, &ggsn_sender,
buf, msg(gtp_ping_from_ggsn), now,
&reply_buf, &sgsn_ofd, &to_addr);
OSMO_ASSERT(send > 0);
OSMO_ASSERT(same_addr(&to_addr, &ggsn_sender));
OSMO_ASSERT(reply_is(gtp_pong_to_ggsn));
struct gtphub_peer_port *ggsn_port =
gtphub_port_find_sa(&hub->to_ggsns[GTPH_PLANE_CTRL],
&sgsn_sender);
/* We don't record Echo peers. */
OSMO_ASSERT(!ggsn_port);
now += EXPIRE_ALL;
gtphub_gc(hub, now);
}
#define MSG_PDP_CTX_REQ(len, seq, restart, imsi, tei_u, tei_c, apn, gsn_c, gsn_u) \
"32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ \
"10" /* type 16: Create PDP Context Request */ \
len /* msg length = 8 + len (2 octets) */ \
"00000000" /* No TEI yet */ \
seq /* Sequence nr (2 octets) */ \
"00" /* N-PDU 0 */ \
"00" /* No extensions */ \
/* IEs */ \
"0e" restart /* 14: Recovery = 96 (restart counter: 1 octet) */ \
"02" /* 2 = IMSI */ \
imsi /* (8 octets) */ \
"0f01" /* 15: Selection mode = MS provided APN, subscription not verified*/ \
"10" /* 16: TEI Data I */ \
tei_u /* (4 octets) */ \
"11" /* 17: TEI Control Plane */ \
tei_c /* (4 octets) */ \
"1400" /* 20: NSAPI = 0*/ \
"1a" /* 26: Charging Characteristics */ \
"0800" \
"80" /* 128: End User Address */ \
"0002" /* length = 2: empty PDP Address */ \
"f121" /* spare 0xf0, PDP organization 1, PDP type number 0x21 = 33 */ \
"83" /* 131: Access Point Name */ \
apn /* (2 octets length, N octets encoded APN-NI) */ \
"84" /* 132: Protocol Configuration Options */ \
"0015" /* length = 21 */ \
"80c0231101010011036d69670868656d6d656c6967" \
"85" /* 133: GSN Address */ \
gsn_c /* (2 octets length, N octets addr) */ \
"85" /* 133: GSN Address (second entry) */ \
gsn_u /* (2 octets length, N octets addr) */ \
"86" /* 134: MS International PSTN/ISDN Number (MSISDN) */ \
"0007" /* length */ \
"916407123254f6" /* 1946702123456(f) */ \
"87" /* 135: Quality of Service (QoS) Profile */ \
"0004" /* length */ \
"00" /* priority */ \
"0b921f" /* QoS profile data */
#define MSG_PDP_CTX_RSP(len, tei_h, seq, restart, tei_u, tei_c, gsn_c, gsn_u) \
"32" \
"11" /* Create PDP Context Response */ \
len /* msg length = 8 + len (2 octets) */ \
tei_h /* destination TEI (sent in req above) */ \
seq /* mapped seq */ \
"00" "00" \
/* IEs */ \
"01" /* 1: Cause */ \
"80" /* value = 0b10000000 = response, no rejection. */ \
"08" /* 8: Reordering Required */ \
"00" /* not required. */ \
"0e" restart /* 14: Recovery = 1 */ \
"10" /* 16: TEI Data I */ \
tei_u \
"11" /* 17: TEI Control */ \
tei_c \
"7f" /* 127: Charging ID */ \
"00000001" \
"80" /* 128: End User Address */ \
"0006" /* length = 6 */ \
"f121" /* spare 0xf0, PDP organization 1, PDP type number 0x21 = 33 */ \
"7f000002" \
"84" /* 132: Protocol Configuration Options */ \
"0014" /* len = 20 */ \
"8080211002000010810608080808830600000000" \
"85" /* 133: GSN Address (Ctrl) */ \
gsn_c \
"85" /* 133: GSN Address (User) */ \
gsn_u \
"87" /* 135: Quality of Service (QoS) Profile */ \
"0004" /* length */ \
"00" /* priority */ \
"0b921f" /* QoS profile data */
#define msg_from_sgsn_c(A,B,C,D) msg_from_sgsn(GTPH_PLANE_CTRL, A,B,C,D)
#define msg_from_sgsn_u(A,B,C,D) msg_from_sgsn(GTPH_PLANE_USER, A,B,C,D)
static int msg_from_sgsn(int plane_idx,
struct osmo_sockaddr *_sgsn_sender,
struct osmo_sockaddr *ggsn_receiver,
const char *hex_from_sgsn,
const char *hex_to_ggsn)
{
struct osmo_fd *ggsn_ofd = NULL;
struct osmo_sockaddr ggsn_addr;
int send;
send = gtphub_from_sgsns_handle_buf(hub, plane_idx, _sgsn_sender, buf,
msg(hex_from_sgsn), now,
&reply_buf, &ggsn_ofd, &ggsn_addr);
LVL2_ASSERT(send > 0);
LVL2_ASSERT(same_addr(&ggsn_addr, ggsn_receiver));
LVL2_ASSERT(reply_is(hex_to_ggsn));
return 1;
}
#define msg_from_ggsn_c(A,B,C,D) msg_from_ggsn(GTPH_PLANE_CTRL, A,B,C,D)
#define msg_from_ggsn_u(A,B,C,D) msg_from_ggsn(GTPH_PLANE_USER, A,B,C,D)
static int msg_from_ggsn(int plane_idx,
struct osmo_sockaddr *ggsn_sender,
struct osmo_sockaddr *sgsn_receiver,
const char *msg_from_ggsn,
const char *msg_to_sgsn)
{
struct osmo_fd *sgsn_ofd;
struct osmo_sockaddr sgsn_addr;
int send;
send = gtphub_from_ggsns_handle_buf(hub, plane_idx, ggsn_sender, buf,
msg(msg_from_ggsn), now,
&reply_buf, &sgsn_ofd, &sgsn_addr);
LVL2_ASSERT(send > 0);
LVL2_ASSERT(same_addr(&sgsn_addr, sgsn_receiver));
LVL2_ASSERT(reply_is(msg_to_sgsn));
return 1;
}
static int create_pdp_ctx()
{
const char *gtp_req_from_sgsn = MSG_PDP_CTX_REQ("0068",
"abcd",
"60",
"42000121436587f9",
"00000123",
"00000321",
"0009""08696e7465726e6574", /* "(8)internet" */
"0004""c0a82a17", /* same as default sgsn_sender */
"0004""c0a82a17"
);
const char *gtp_req_to_ggsn = MSG_PDP_CTX_REQ("0068",
"6d31", /* mapped seq ("abcd") */
"60",
"42000121436587f9",
"00000001", /* mapped TEI Data I ("123") */
"00000001", /* mapped TEI Control ("321") */
"0009""08696e7465726e6574",
"0004""7f000201", /* replaced with gtphub's address ggsn ctrl */
"0004""7f000202" /* replaced with gtphub's address ggsn user */
);
LVL2_ASSERT(msg_from_sgsn_c(&sgsn_sender,
&resolved_ggsn_addr,
gtp_req_from_sgsn,
gtp_req_to_ggsn));
LVL2_ASSERT(was_resolved_for("240010123456789", "internet"));
const char *gtp_resp_from_ggsn = MSG_PDP_CTX_RSP("004e",
"00000001", /* destination TEI (sent in req above) */
"6d31", /* mapped seq */
"01", /* restart */
"00000567", /* TEI U */
"00000765", /* TEI C */
"0004""c0a82b22", /* GSN addresses */
"0004""c0a82b22" /* (== resolved_ggsn_addr) */
);
const char *gtp_resp_to_sgsn = MSG_PDP_CTX_RSP("004e",
"00000321", /* unmapped TEI ("001") */
"abcd", /* unmapped seq ("6d31") */
"01",
"00000002", /* mapped TEI from GGSN ("567") */
"00000002", /* mapped TEI from GGSN ("765") */
"0004""7f000101", /* gtphub's address towards SGSNs (Ctrl) */
"0004""7f000102" /* gtphub's address towards SGSNs (User) */
);
/* The response should go back to whichever port the request came from
* (unmapped by sequence nr) */
LVL2_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr,
&sgsn_sender,
gtp_resp_from_ggsn,
gtp_resp_to_sgsn));
return 1;
}
static void test_create_pdp_ctx(void)
{
LOG("test_create_pdp_ctx");
OSMO_ASSERT(setup_test_hub());
OSMO_ASSERT(create_pdp_ctx());
struct gtphub_peer_port *ggsn_port =
gtphub_port_find_sa(&hub->to_ggsns[GTPH_PLANE_CTRL],
&resolved_ggsn_addr);
OSMO_ASSERT(ggsn_port);
struct gtphub_peer *ggsn = ggsn_port->peer_addr->peer;
/* now == 345; now + 30 == 375.
* seq mapping from above:
* 0xabcd == 43981 (sent in the packet)
* 0x6d31 == 27953 (harcoded seq mapping start val) */
OSMO_ASSERT(nr_map_is(&ggsn->seq_map, "(43981->27953@375), "));
/* now == 345; now + (6 * 60 * 60) == 21600 + 345 == 21945.
* 0x00000321 == 801 (TEI from SGSN Ctrl)
* 0x00000123 == 291 (TEI from SGSN User)
* 0x00000765 == 1893 (TEI from GGSN Ctrl)
* 0x00000567 == 1383 (TEI from GGSN User)
* Mapped TEIs should be 1 and 2. */
OSMO_ASSERT(nr_map_is(&hub->tei_map[GTPH_PLANE_CTRL], "(801->1@21945), (1893->2@21945), "));
OSMO_ASSERT(nr_map_is(&hub->tei_map[GTPH_PLANE_USER], "(291->1@21945), (1383->2@21945), "));
gtphub_gc(hub, now + EXPIRE_ALL);
}
static void test_user_data(void)
{
LOG("test_user_data");
OSMO_ASSERT(setup_test_hub());
OSMO_ASSERT(create_pdp_ctx());
LOG("- user data starts");
/* Now expect default port numbers for User. */
resolve_to_ggsn("192.168.43.34", 2152);
resolve_to_sgsn("192.168.42.23", 2152);
const char *u_from_ggsn =
"32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ \
"ff" /* type 255: G-PDU */
"0058" /* length: 88 + 8 octets == 96 */
"00000001" /* mapped User TEI for SGSN from create_pdp_ctx() */
"0070" /* seq */
"0000" /* No extensions */
/* User data (ICMP packet), 96 - 12 = 84 octets */
"45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8"
"4156000000007241010000000000101112131415161718191a1b1c1d1e1f"
"202122232425262728292a2b2c2d2e2f3031323334353637"
;
const char *u_to_sgsn =
"32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ \
"ff" /* type 255: G-PDU */
"0058" /* length: 88 + 8 octets == 96 */
"00000123" /* unmapped User TEI */
"6d31" /* new mapped seq */
"0000"
"45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8"
"4156000000007241010000000000101112131415161718191a1b1c1d1e1f"
"202122232425262728292a2b2c2d2e2f3031323334353637"
;
/* This depends on create_pdp_ctx() sending resolved_sgsn_addr as GSN
* Address IEs in the GGSN's Create PDP Ctx Response. */
OSMO_ASSERT(msg_from_ggsn_u(&ggsn_sender,
&resolved_sgsn_addr,
u_from_ggsn,
u_to_sgsn));
const char *u_from_sgsn =
"32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ \
"ff" /* type 255: G-PDU */
"0058" /* length: 88 + 8 octets == 96 */
"00000002" /* mapped User TEI for GGSN from create_pdp_ctx() */
"6d31" /* mapped seq */
"0000" /* No extensions */
/* User data (ICMP packet), 96 - 12 = 84 octets */
"45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8"
"4156000000007241010000000000101112131415161718191a1b1c1d1e1f"
"202122232425262728292a2b2c2d2e2f3031323334353637"
;
const char *u_to_ggsn =
"32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ \
"ff" /* type 255: G-PDU */
"0058" /* length: 88 + 8 octets == 96 */
"00000567" /* unmapped User TEI */
"0070" /* unmapped seq */
"0000"
"45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8"
"4156000000007241010000000000101112131415161718191a1b1c1d1e1f"
"202122232425262728292a2b2c2d2e2f3031323334353637"
;
OSMO_ASSERT(msg_from_sgsn_u(&resolved_sgsn_addr,
&ggsn_sender,
u_from_sgsn,
u_to_ggsn));
gtphub_gc(hub, now + EXPIRE_ALL);
}
static struct log_info_cat gtphub_categories[] = {
[DGTPHUB] = {
.name = "DGTPHUB",
.description = "GTP Hub",
.color = "\033[1;33m",
.enabled = 1, .loglevel = LOGL_NOTICE,
},
};
static struct log_info info = {
.cat = gtphub_categories,
.num_cat = ARRAY_SIZE(gtphub_categories),
};
int main(int argc, char **argv)
{
osmo_init_logging(&info);
osmo_gtphub_ctx = talloc_named_const(NULL, 0, "osmo_gtphub");
test_nr_map_basic();
test_expiry();
test_echo();
test_create_pdp_ctx();
test_user_data();
printf("Done\n");
talloc_report_full(osmo_gtphub_ctx, stderr);
OSMO_ASSERT(talloc_total_blocks(osmo_gtphub_ctx) == 1);
return 0;
}
View Git Blame Copy Permalink