| /* 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) |
| |
| /* Make non-public API accessible */ |
| |
| 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 |
| } |
| |
| |
| |
| /* override, requires '-Wl,--wrap=gtphub_resolve_ggsn_addr' */ |
| int __real_gtphub_resolve_ggsn_addr(struct gtphub *hub, |
| struct osmo_sockaddr *result, |
| struct gtp_packet_desc *p); |
| |
| struct osmo_sockaddr resolved_ggsn_addr = {.l = 0}; |
| int __wrap_gtphub_resolve_ggsn_addr(struct gtphub *hub, |
| struct osmo_sockaddr *result, |
| struct gtp_packet_desc *p) |
| { |
| osmo_sockaddr_copy(result, &resolved_ggsn_addr); |
| printf("Wrap: returning GGSN addr: %s\n", |
| osmo_sockaddr_to_str(result)); |
| return (resolved_ggsn_addr.l != 0)? 0 : -1; |
| } |
| |
| #define buf_len 1024 |
| static uint8_t buf[buf_len]; |
| |
| 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 msg_is(MSG) _msg_is(MSG, __FILE__, __LINE__) |
| static int _msg_is(const char *hex, const char *file, int line) |
| { |
| struct gtp1_header_long *h = (void*)buf; |
| int len = ntoh16(h->length) + 8; |
| const char *dump = osmo_hexdump_nospc(buf, len); |
| int cmp = strcmp(dump, hex); |
| |
| if (cmp != 0) { |
| printf("\n%s:%d: msg_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; |
| } |
| |
| static void test_echo(void) |
| { |
| struct gtphub _hub; |
| struct gtphub *hub = &_hub; |
| time_t now = 123; |
| |
| gtphub_init(hub); |
| |
| 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 16 octet sequence nr */ |
| "0000" /* N-PDU 0, no extension header (why is this here?) */ |
| ; |
| |
| /* Same with mapped sequence number */ |
| const char *gtp_ping_to_ggsn = |
| "32" "01" "0004" "00000000" |
| "6d31" /* mapped seq */ |
| "00" "00"; |
| |
| const char *gtp_pong_from_ggsn = |
| "32" |
| "02" /* type 02: Echo response */ |
| "0006" /* len */ |
| "00000000" /* tei */ |
| "6d31" /* mapped seq */ |
| "0000" /* ext */ |
| "0e01" /* 0e: Recovery, val == 1 */ |
| ; |
| /* Same with unmapped sequence number */ |
| const char *gtp_pong_to_sgsn = |
| "32" "02" "0006" "00000000" |
| "abcd" /* unmapped seq */ |
| "00" "00" "0e01"; |
| |
| /* Set the GGSN address that gtphub is forced to resolve to. */ |
| OSMO_ASSERT(osmo_sockaddr_init_udp(&resolved_ggsn_addr, |
| "192.168.43.34", 434) |
| == 0); |
| |
| /* according to spec, we'd always send to port 2123 instead... |
| struct osmo_sockaddr ggsn_standard_port; |
| OSMO_ASSERT(osmo_sockaddr_init_udp(&ggsn_standard_port, |
| "192.168.43.34", 2123) |
| == 0); |
| */ |
| |
| struct osmo_sockaddr orig_sgsn_addr; |
| OSMO_ASSERT(osmo_sockaddr_init(&orig_sgsn_addr, |
| AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, |
| "192.168.42.23", 423) == 0); |
| struct osmo_fd *ggsn_ofd = NULL; |
| struct osmo_sockaddr ggsn_addr; |
| int send; |
| send = gtphub_from_sgsns_handle_buf(hub, GTPH_PLANE_CTRL, &orig_sgsn_addr, |
| buf, msg(gtp_ping_from_sgsn), now, |
| &ggsn_ofd, &ggsn_addr); |
| OSMO_ASSERT(send > 0); |
| OSMO_ASSERT(ggsn_addr.l); |
| OSMO_ASSERT(same_addr(&ggsn_addr, &resolved_ggsn_addr)); |
| OSMO_ASSERT(msg_is(gtp_ping_to_ggsn)); |
| |
| struct osmo_fd *sgsn_ofd; |
| struct osmo_sockaddr sgsn_addr; |
| send = gtphub_from_ggsns_handle_buf(hub, GTPH_PLANE_CTRL, &ggsn_addr, |
| buf, msg(gtp_pong_from_ggsn), now, |
| &sgsn_ofd, &sgsn_addr); |
| OSMO_ASSERT(send > 0); |
| OSMO_ASSERT(same_addr(&sgsn_addr, &orig_sgsn_addr)); |
| OSMO_ASSERT(msg_is(gtp_pong_to_sgsn)); |
| |
| 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 == 123; now + 30 == 153. */ |
| OSMO_ASSERT(nr_map_is(&ggsn->seq_map, "(43981->27953@153), ")); |
| |
| OSMO_ASSERT(nr_map_is(&hub->tei_map[GTPH_PLANE_CTRL], "")); |
| OSMO_ASSERT(nr_map_is(&hub->tei_map[GTPH_PLANE_USER], "")); |
| |
| gtphub_gc(hub, now + EXPIRE_ALL); |
| } |
| |
| static void test_create_pdp_ctx(void) |
| { |
| struct gtphub _hub; |
| struct gtphub *hub = &_hub; |
| time_t now = 345; |
| |
| gtphub_init(hub); |
| |
| /* Tell this mock gtphub its local address for this test. */ |
| OSMO_ASSERT(gsn_addr_from_str(&hub->to_sgsns[GTPH_PLANE_CTRL].local_addr, |
| "127.0.1.1") == 0); |
| OSMO_ASSERT(gsn_addr_from_str(&hub->to_sgsns[GTPH_PLANE_USER].local_addr, |
| "127.0.1.2") == 0); |
| OSMO_ASSERT(gsn_addr_from_str(&hub->to_ggsns[GTPH_PLANE_CTRL].local_addr, |
| "127.0.2.1") == 0); |
| OSMO_ASSERT(gsn_addr_from_str(&hub->to_ggsns[GTPH_PLANE_USER].local_addr, |
| "127.0.2.2") == 0); |
| |
| /* This is copied from a packet that sgsnemu sends. */ |
| const char *gtp_req_from_sgsn = |
| "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ |
| "10" /* type 16: Create PDP Context Request */ |
| "0067" /* length = 8 + 103 */ |
| "00000000" /* No TEI yet */ |
| "abcd" /* Sequence nr */ |
| "00" /* N-PDU 0 */ |
| "00" /* No extensions */ |
| /* IEs */ |
| "02" /* 2 = IMSI */ |
| "42000121436587f9" |
| "0e" "60" /* 14: Recovery = 96 */ |
| "0f01" /* 15: Selection mode = MS provided APN, subscription not verified*/ |
| "10" /* 16: TEI Data I */ |
| "00000123" |
| "11" /* 17: TEI Control Plane */ |
| "00000321" |
| "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 */ |
| "0008" /* length = 8 */ |
| "696e7465726e6574" /* "internet" */ |
| "84" /* 132: Protocol Configuration Options */ |
| "0015" /* length = 21 */ |
| "80c0231101010011036d69670868656d6d656c6967" |
| "85" /* 133: GSN Address */ |
| "0004" /* length */ |
| "abcdef00" |
| "85" /* 133: GSN Address (second entry) */ |
| "0004" /* length */ |
| "fedcba00" |
| "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 */ |
| ; |
| |
| const char *gtp_req_to_ggsn = |
| "32" "10" "0067" "00000000" |
| "6d31" /* mapped seq ("abcd") */ |
| "00" "00" "02" "42000121436587f9" "0e60" "0f01" |
| "10" "00000001" /* mapped TEI Data I ("123") */ |
| "11" "00000001" /* mapped TEI Control ("321") */ |
| "1400" "1a" "0800" "80" "0002" "f121" "83" |
| "0008" "696e7465726e6574" "84" "0015" |
| "80c0231101010011036d69670868656d6d656c6967" "85" "0004" |
| "7f000201" /* replaced with gtphub's address ggsn ctrl */ |
| "85" "0004" |
| "7f000202" /* replaced with gtphub's address ggsn user */ |
| "86" "0007" "916407123254f6" |
| "87" "0004" "00" "0b921f" |
| ; |
| |
| const char *gtp_resp_from_ggsn = |
| "32" |
| "11" /* Create PDP Context Response */ |
| "004e" /* length = 78 + 8 */ |
| "00000001" /* destination TEI (sent in req above) */ |
| "6d31" /* mapped seq */ |
| "00" "00" |
| /* IEs */ |
| "01" /* 1: Cause */ |
| "80" /* value = 0b10000000 = response, no rejection. */ |
| "08" /* 8: Reordering Required */ |
| "00" /* not required. */ |
| "0e" "01" /* 14: Recovery = 1 */ |
| "10" /* 16: TEI Data I */ |
| "00000567" |
| "11" /* 17: TEI Control */ |
| "00000765" |
| "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) */ |
| "0004" /* length */ |
| "7f000002" |
| "85" /* 133: GSN Address (User) */ |
| "0004" /* length */ |
| "7f000002" |
| "87" /* 135: Quality of Service (QoS) Profile */ |
| "0004" /* length */ |
| "00" /* priority */ |
| "0b921f" /* QoS profile data */ |
| ; |
| |
| const char *gtp_resp_to_sgsn = |
| "32" "11" "004e" |
| "00000321" /* unmapped TEI ("001") */ |
| "abcd" /* unmapped seq ("6d31") */ |
| "00" "00" "01" "80" "08" "00" "0e" "01" |
| "10" "00000002" /* mapped TEI from GGSN ("567") */ |
| "11" "00000002" /* mapped TEI from GGSN ("765") */ |
| "7f" "00000001" "80" "0006" "f121" "7f000002" "84" "0014" |
| "8080211002000010810608080808830600000000" |
| "85" "0004" |
| "7f000101" /* gtphub's address towards SGSNs (Ctrl) */ |
| "85" "0004" |
| "7f000102" /* gtphub's address towards SGSNs (User) */ |
| "87" "0004" "00" "0b921f" |
| ; |
| |
| /* Set the GGSN address that gtphub is forced to resolve to. */ |
| OSMO_ASSERT(osmo_sockaddr_init_udp(&resolved_ggsn_addr, |
| "192.168.43.34", 434) |
| == 0); |
| |
| struct osmo_sockaddr orig_sgsn_addr; |
| OSMO_ASSERT(osmo_sockaddr_init(&orig_sgsn_addr, |
| AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, |
| "192.168.42.23", 423) == 0); |
| struct osmo_fd *ggsn_ofd = NULL; |
| struct osmo_sockaddr ggsn_addr; |
| int send; |
| send = gtphub_from_sgsns_handle_buf(hub, GTPH_PLANE_CTRL, &orig_sgsn_addr, |
| buf, msg(gtp_req_from_sgsn), now, |
| &ggsn_ofd, &ggsn_addr); |
| OSMO_ASSERT(send > 0); |
| OSMO_ASSERT(same_addr(&ggsn_addr, &resolved_ggsn_addr)); |
| OSMO_ASSERT(msg_is(gtp_req_to_ggsn)); |
| |
| struct osmo_fd *sgsn_ofd; |
| struct osmo_sockaddr sgsn_addr; |
| send = gtphub_from_ggsns_handle_buf(hub, GTPH_PLANE_CTRL, &ggsn_addr, |
| buf, msg(gtp_resp_from_ggsn), now, |
| &sgsn_ofd, &sgsn_addr); |
| OSMO_ASSERT(send > 0); |
| OSMO_ASSERT(same_addr(&sgsn_addr, &orig_sgsn_addr)); |
| OSMO_ASSERT(msg_is(gtp_resp_to_sgsn)); |
| |
| 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 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(); |
| printf("Done\n"); |
| |
| talloc_report_full(osmo_gtphub_ctx, stderr); |
| OSMO_ASSERT(talloc_total_blocks(osmo_gtphub_ctx) == 1); |
| return 0; |
| } |
| |