| /* test routines for NS connection handling |
| * (C) 2013 by sysmocom - s.f.m.c. GmbH |
| * Author: Jacob Erlbeck <jerlbeck@sysmocom.de> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #undef _GNU_SOURCE |
| #define _GNU_SOURCE |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <stdint.h> |
| #include <string.h> |
| #include <getopt.h> |
| #include <dlfcn.h> |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/application.h> |
| #include <osmocom/core/utils.h> |
| #include <osmocom/core/logging.h> |
| #include <osmocom/core/talloc.h> |
| #include <osmocom/core/signal.h> |
| #include <osmocom/core/rate_ctr.h> |
| #include <osmocom/gprs/gprs_msgb.h> |
| #include <osmocom/gprs/gprs_ns.h> |
| #include <osmocom/gprs/gprs_bssgp.h> |
| |
| #define REMOTE_BSS_ADDR 0x01020304 |
| #define REMOTE_SGSN_ADDR 0x05060708 |
| |
| #define SGSN_NSEI 0x0100 |
| |
| static int sent_pdu_type = 0; |
| |
| static int gprs_process_message(struct gprs_ns_inst *nsi, const char *text, |
| struct sockaddr_in *peer, const unsigned char* data, |
| size_t data_len); |
| |
| static void send_ns_reset(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, |
| enum ns_cause cause, uint16_t nsvci, uint16_t nsei) |
| { |
| /* GPRS Network Service, PDU type: NS_RESET, |
| */ |
| unsigned char msg[12] = { |
| 0x02, 0x00, 0x81, 0x01, 0x01, 0x82, 0x11, 0x22, |
| 0x04, 0x82, 0x11, 0x22 |
| }; |
| |
| msg[3] = cause; |
| msg[6] = nsvci / 256; |
| msg[7] = nsvci % 256; |
| msg[10] = nsei / 256; |
| msg[11] = nsei % 256; |
| |
| gprs_process_message(nsi, "RESET", src_addr, msg, sizeof(msg)); |
| } |
| |
| static void send_ns_reset_ack(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, |
| uint16_t nsvci, uint16_t nsei) |
| { |
| /* GPRS Network Service, PDU type: NS_RESET_ACK, |
| */ |
| unsigned char msg[9] = { |
| 0x03, 0x01, 0x82, 0x11, 0x22, |
| 0x04, 0x82, 0x11, 0x22 |
| }; |
| |
| msg[3] = nsvci / 256; |
| msg[4] = nsvci % 256; |
| msg[7] = nsei / 256; |
| msg[8] = nsei % 256; |
| |
| gprs_process_message(nsi, "RESET_ACK", src_addr, msg, sizeof(msg)); |
| } |
| |
| static void send_ns_alive(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr) |
| { |
| /* GPRS Network Service, PDU type: NS_ALIVE */ |
| unsigned char msg[1] = { |
| 0x0a |
| }; |
| |
| gprs_process_message(nsi, "ALIVE", src_addr, msg, sizeof(msg)); |
| } |
| |
| static void send_ns_alive_ack(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr) |
| { |
| /* GPRS Network Service, PDU type: NS_ALIVE_ACK */ |
| unsigned char msg[1] = { |
| 0x0b |
| }; |
| |
| gprs_process_message(nsi, "ALIVE_ACK", src_addr, msg, sizeof(msg)); |
| } |
| |
| static void send_ns_unblock(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr) |
| { |
| /* GPRS Network Service, PDU type: NS_UNBLOCK */ |
| unsigned char msg[1] = { |
| 0x06 |
| }; |
| |
| gprs_process_message(nsi, "UNBLOCK", src_addr, msg, sizeof(msg)); |
| } |
| |
| static void send_ns_unblock_ack(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr) |
| { |
| /* GPRS Network Service, PDU type: NS_UNBLOCK_ACK */ |
| unsigned char msg[1] = { |
| 0x07 |
| }; |
| |
| gprs_process_message(nsi, "UNBLOCK_ACK", src_addr, msg, sizeof(msg)); |
| } |
| |
| static void send_ns_unitdata(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, |
| uint16_t nsbvci, |
| const unsigned char *bssgp_msg, size_t bssgp_msg_size) |
| { |
| /* GPRS Network Service, PDU type: NS_UNITDATA */ |
| unsigned char msg[4096] = { |
| 0x00, 0x00, 0x00, 0x00 |
| }; |
| |
| OSMO_ASSERT(bssgp_msg_size <= sizeof(msg) - 4); |
| |
| msg[2] = nsbvci / 256; |
| msg[3] = nsbvci % 256; |
| memcpy(msg + 4, bssgp_msg, bssgp_msg_size); |
| |
| gprs_process_message(nsi, "UNITDATA", src_addr, msg, bssgp_msg_size + 4); |
| } |
| |
| static void send_bssgp_reset(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, |
| uint16_t bvci) |
| { |
| /* GPRS Network Service, PDU type: NS_UNITDATA, BVCI 0 |
| * BSSGP RESET */ |
| unsigned char msg[22] = { |
| 0x22, 0x04, 0x82, 0x4a, |
| 0x2e, 0x07, 0x81, 0x08, 0x08, 0x88, 0x10, 0x20, |
| 0x30, 0x40, 0x50, 0x60, 0x10, 0x00 |
| }; |
| |
| msg[3] = bvci / 256; |
| msg[4] = bvci % 256; |
| |
| send_ns_unitdata(nsi, src_addr, 0, msg, sizeof(msg)); |
| } |
| |
| static void setup_ns(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, |
| uint16_t nsvci, uint16_t nsei) |
| { |
| printf("Setup NS-VC: remote 0x%08x:%d, " |
| "NSVCI 0x%04x(%d), NSEI 0x%04x(%d)\n\n", |
| ntohl(src_addr->sin_addr.s_addr), ntohs(src_addr->sin_port), |
| nsvci, nsvci, nsei, nsei); |
| |
| send_ns_reset(nsi, src_addr, NS_CAUSE_OM_INTERVENTION, nsvci, nsei); |
| send_ns_alive(nsi, src_addr); |
| send_ns_unblock(nsi, src_addr); |
| send_ns_alive_ack(nsi, src_addr); |
| } |
| |
| static void setup_bssgp(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, |
| uint16_t bvci) __attribute__((__unused__)); |
| |
| static void setup_bssgp(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, |
| uint16_t bvci) |
| { |
| printf("Setup BSSGP: remote 0x%08x:%d, " |
| "BVCI 0x%04x(%d)\n\n", |
| ntohl(src_addr->sin_addr.s_addr), ntohs(src_addr->sin_port), |
| bvci, bvci); |
| |
| send_bssgp_reset(nsi, src_addr, bvci); |
| } |
| |
| /* GPRS Network Service, PDU type: NS_STATUS, |
| * Cause: PDU not compatible with the protocol state |
| * PDU: NS_ALIVE |
| */ |
| static const unsigned char gprs_ns_status_invalid_alive[7] = { |
| 0x08, 0x00, 0x81, 0x0a, 0x02, 0x81, 0x0a |
| }; |
| |
| /* GPRS Network Service, PDU type: NS_UNITDATA, BVCI 0 */ |
| static const unsigned char gprs_bssgp_reset[22] = { |
| 0x00, 0x00, 0x00, 0x00, 0x22, 0x04, 0x82, 0x4a, |
| 0x2e, 0x07, 0x81, 0x08, 0x08, 0x88, 0x10, 0x20, |
| 0x30, 0x40, 0x50, 0x60, 0x10, 0x00 |
| }; |
| |
| int gprs_ns_rcvmsg(struct gprs_ns_inst *nsi, struct msgb *msg, |
| struct sockaddr_in *saddr, enum gprs_ns_ll ll); |
| |
| /* override */ |
| int gprs_ns_callback(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, |
| struct msgb *msg, uint16_t bvci) |
| { |
| printf("CALLBACK, event %d, msg length %td, bvci 0x%04x\n%s\n\n", |
| event, msgb_bssgp_len(msg), bvci, |
| osmo_hexdump(msgb_bssgph(msg), msgb_bssgp_len(msg))); |
| return 0; |
| } |
| |
| /* override */ |
| ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, |
| const struct sockaddr *dest_addr, socklen_t addrlen) |
| { |
| typedef ssize_t (*sendto_t)(int, const void *, size_t, int, |
| const struct sockaddr *, socklen_t); |
| static sendto_t real_sendto = NULL; |
| uint32_t dest_host = htonl(((struct sockaddr_in *)dest_addr)->sin_addr.s_addr); |
| |
| if (!real_sendto) |
| real_sendto = dlsym(RTLD_NEXT, "sendto"); |
| |
| sent_pdu_type = len > 0 ? ((uint8_t *)buf)[0] : -1; |
| |
| if (dest_host == REMOTE_BSS_ADDR) |
| printf("MESSAGE to BSS, msg length %zu\n%s\n\n", len, osmo_hexdump(buf, len)); |
| else if (dest_host == REMOTE_SGSN_ADDR) |
| printf("MESSAGE to SGSN, msg length %zu\n%s\n\n", len, osmo_hexdump(buf, len)); |
| else |
| return real_sendto(sockfd, buf, len, flags, dest_addr, addrlen); |
| |
| return len; |
| } |
| |
| /* override */ |
| int gprs_ns_sendmsg(struct gprs_ns_inst *nsi, struct msgb *msg) |
| { |
| typedef int (*gprs_ns_sendmsg_t)(struct gprs_ns_inst *nsi, struct msgb *msg); |
| static gprs_ns_sendmsg_t real_gprs_ns_sendmsg = NULL; |
| uint16_t bvci = msgb_bvci(msg); |
| uint16_t nsei = msgb_nsei(msg); |
| |
| unsigned char *buf = msg->data; |
| size_t len = msg->len; |
| |
| if (!real_gprs_ns_sendmsg) |
| real_gprs_ns_sendmsg = dlsym(RTLD_NEXT, "gprs_ns_sendmsg"); |
| |
| if (nsei == SGSN_NSEI) |
| printf("NS UNITDATA MESSAGE to SGSN, BVCI 0x%04x, msg length %zu\n%s\n\n", |
| bvci, len, osmo_hexdump(buf, len)); |
| else |
| printf("NS UNITDATA MESSAGE to BSS, BVCI 0x%04x, msg length %zu\n%s\n\n", |
| bvci, len, osmo_hexdump(buf, len)); |
| |
| return real_gprs_ns_sendmsg(nsi, msg); |
| } |
| |
| static void dump_rate_ctr_group(FILE *stream, const char *prefix, |
| struct rate_ctr_group *ctrg) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < ctrg->desc->num_ctr; i++) { |
| struct rate_ctr *ctr = rate_ctr_group_get_ctr(ctrg, i); |
| if (ctr->current && !strchr(ctrg->desc->ctr_desc[i].name, ':')) |
| fprintf(stream, " %s%s: %llu%s", |
| prefix, ctrg->desc->ctr_desc[i].description, |
| (long long)ctr->current, |
| "\n"); |
| }; |
| } |
| |
| /* Signal handler for signals from NS layer */ |
| static int test_signal(unsigned int subsys, unsigned int signal, |
| void *handler_data, void *signal_data) |
| { |
| struct ns_signal_data *nssd = signal_data; |
| |
| if (subsys != SS_L_NS) |
| return 0; |
| |
| switch (signal) { |
| case S_NS_RESET: |
| printf("==> got signal NS_RESET, NS-VC 0x%04x/%s\n", |
| nssd->nsvc->nsvci, |
| gprs_ns_ll_str(nssd->nsvc)); |
| break; |
| |
| case S_NS_ALIVE_EXP: |
| printf("==> got signal NS_ALIVE_EXP, NS-VC 0x%04x/%s\n", |
| nssd->nsvc->nsvci, |
| gprs_ns_ll_str(nssd->nsvc)); |
| break; |
| |
| case S_NS_BLOCK: |
| printf("==> got signal NS_BLOCK, NS-VC 0x%04x/%s\n", |
| nssd->nsvc->nsvci, |
| gprs_ns_ll_str(nssd->nsvc)); |
| break; |
| |
| case S_NS_UNBLOCK: |
| printf("==> got signal NS_UNBLOCK, NS-VC 0x%04x/%s\n", |
| nssd->nsvc->nsvci, |
| gprs_ns_ll_str(nssd->nsvc)); |
| break; |
| |
| case S_NS_REPLACED: |
| printf("==> got signal NS_REPLACED: 0x%04x/%s", |
| nssd->nsvc->nsvci, |
| gprs_ns_ll_str(nssd->nsvc)); |
| printf(" -> 0x%04x/%s\n", |
| nssd->old_nsvc->nsvci, |
| gprs_ns_ll_str(nssd->old_nsvc)); |
| break; |
| |
| case S_NS_MISMATCH: |
| printf("==> got signal NS_MISMATCH: 0x%04x/%s pdu=%d, ie=%d\n", |
| nssd->nsvc->nsvci, gprs_ns_ll_str(nssd->nsvc), |
| nssd->pdu_type, nssd->ie_type); |
| break; |
| |
| default: |
| printf("==> got signal %d, NS-VC 0x%04x/%s\n", signal, |
| nssd->nsvc->nsvci, |
| gprs_ns_ll_str(nssd->nsvc)); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int gprs_process_message(struct gprs_ns_inst *nsi, const char *text, struct sockaddr_in *peer, const unsigned char* data, size_t data_len) |
| { |
| struct msgb *msg; |
| int ret; |
| if (data_len > NS_ALLOC_SIZE - NS_ALLOC_HEADROOM) { |
| fprintf(stderr, "message too long: %zu\n", data_len); |
| return -1; |
| } |
| |
| msg = gprs_ns_msgb_alloc(); |
| memmove(msg->data, data, data_len); |
| msg->l2h = msg->data; |
| msgb_put(msg, data_len); |
| |
| printf("PROCESSING %s from 0x%08x:%d\n%s\n\n", |
| text, ntohl(peer->sin_addr.s_addr), ntohs(peer->sin_port), |
| osmo_hexdump(data, data_len)); |
| |
| ret = gprs_ns_rcvmsg(nsi, msg, peer, GPRS_NS_LL_UDP); |
| |
| printf("result (%s) = %d\n\n", text, ret); |
| |
| msgb_free(msg); |
| |
| return ret; |
| } |
| |
| static int gprs_send_message(struct gprs_ns_inst *nsi, const char *text, |
| uint16_t nsei, uint16_t bvci, |
| const unsigned char* data, size_t data_len) |
| { |
| struct msgb *msg; |
| int ret; |
| if (data_len > NS_ALLOC_SIZE - NS_ALLOC_HEADROOM) { |
| fprintf(stderr, "message too long: %zu\n", data_len); |
| return -1; |
| } |
| |
| msg = gprs_ns_msgb_alloc(); |
| memmove(msg->data, data, data_len); |
| msg->l2h = msg->data; |
| msgb_put(msg, data_len); |
| |
| msgb_nsei(msg) = nsei; |
| msgb_bvci(msg) = bvci; |
| |
| printf("SENDING %s to NSEI 0x%04x, BVCI 0x%04x\n", text, nsei, bvci); |
| |
| ret = gprs_ns_sendmsg(nsi, msg); |
| |
| printf("result (%s) = %d\n\n", text, ret); |
| |
| return ret; |
| } |
| |
| static void gprs_dump_nsi(struct gprs_ns_inst *nsi) |
| { |
| struct gprs_nsvc *nsvc; |
| |
| printf("Current NS-VCIs:\n"); |
| llist_for_each_entry(nsvc, &nsi->gprs_nsvcs, list) { |
| struct sockaddr_in *peer = &(nsvc->ip.bts_addr); |
| printf(" VCI 0x%04x, NSEI 0x%04x, peer 0x%08x:%d, %s, %s, %s%s\n", |
| nsvc->nsvci, nsvc->nsei, |
| ntohl(peer->sin_addr.s_addr), ntohs(peer->sin_port), |
| NS_DESC_A(nsvc->state), |
| NS_DESC_B(nsvc->state), |
| NS_DESC_R(nsvc->state), |
| nsvc->nsvci_is_valid ? "" : ", invalid VCI" |
| ); |
| dump_rate_ctr_group(stdout, " ", nsvc->ctrg); |
| } |
| printf("\n"); |
| } |
| |
| static int expire_nsvc_timer(struct gprs_nsvc *nsvc) |
| { |
| int rc; |
| |
| if (!osmo_timer_pending(&nsvc->timer)) |
| return -1; |
| |
| rc = nsvc->timer_mode; |
| osmo_timer_del(&nsvc->timer); |
| |
| nsvc->timer.cb(nsvc->timer.data); |
| |
| return rc; |
| } |
| |
| static void test_nsvc() |
| { |
| struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); |
| struct sockaddr_in peer[1] = {{0},}; |
| struct gprs_nsvc *nsvc; |
| int i; |
| |
| peer[0].sin_family = AF_INET; |
| peer[0].sin_port = htons(1111); |
| peer[0].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| |
| for (i=0; i<4; ++i) { |
| printf("--- Create via RESET (round %d) ---\n\n", i); |
| |
| send_ns_reset(nsi, &peer[0], NS_CAUSE_OM_INTERVENTION, |
| 0x1001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Delete nsvc object (round %d)---\n\n", i); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, 0x1001); |
| OSMO_ASSERT(nsvc != NULL); |
| gprs_nsvc_delete(nsvc); |
| |
| gprs_dump_nsi(nsi); |
| } |
| |
| gprs_ns_destroy(nsi); |
| nsi = NULL; |
| |
| printf("--- Process timers ---\n\n"); |
| /* wait for rate_ctr_timer expiry */ |
| usleep(1100000); |
| /* ensure termination */ |
| alarm(2); |
| osmo_timers_update(); |
| alarm(0); |
| } |
| |
| static void test_ignored_messages() |
| { |
| struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); |
| struct sockaddr_in peer[1] = {{0},}; |
| |
| peer[0].sin_family = AF_INET; |
| peer[0].sin_port = htons(1111); |
| peer[0].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| |
| printf("--- Send unexpected NS STATUS (should not be answered)---\n\n"); |
| /* Do not respond, see 3GPP TS 08.16, 7.5.1 */ |
| gprs_process_message(nsi, "STATUS", &peer[0], |
| gprs_ns_status_invalid_alive, |
| sizeof(gprs_ns_status_invalid_alive)); |
| |
| printf("--- Send unexpected NS ALIVE ACK (should not be answered)---\n\n"); |
| /* Ignore this, see 3GPP TS 08.16, 7.4.1 */ |
| send_ns_alive_ack(nsi, &peer[0]); |
| |
| printf("--- Send unexpected NS RESET ACK (should not be answered)---\n\n"); |
| /* Ignore this, see 3GPP TS 08.16, 7.3.1 */ |
| send_ns_reset_ack(nsi, &peer[0], 0xe001, 0xe000); |
| |
| gprs_ns_destroy(nsi); |
| nsi = NULL; |
| } |
| |
| static void test_bss_port_changes() |
| { |
| struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); |
| struct sockaddr_in peer[4] = {{0},}; |
| |
| peer[0].sin_family = AF_INET; |
| peer[0].sin_port = htons(1111); |
| peer[0].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| peer[1].sin_family = AF_INET; |
| peer[1].sin_port = htons(2222); |
| peer[1].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| peer[2].sin_family = AF_INET; |
| peer[2].sin_port = htons(3333); |
| peer[2].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| peer[3].sin_family = AF_INET; |
| peer[3].sin_port = htons(4444); |
| peer[3].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| |
| printf("--- Setup, send BSSGP RESET ---\n\n"); |
| |
| setup_ns(nsi, &peer[0], 0x1122, 0x1122); |
| gprs_dump_nsi(nsi); |
| gprs_process_message(nsi, "BSSGP RESET", &peer[0], |
| gprs_bssgp_reset, sizeof(gprs_bssgp_reset)); |
| |
| printf("--- Peer port changes, RESET, message remains unchanged ---\n\n"); |
| |
| send_ns_reset(nsi, &peer[1], NS_CAUSE_OM_INTERVENTION, 0x1122, 0x1122); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Peer port changes, RESET, VCI changes ---\n\n"); |
| |
| send_ns_reset(nsi, &peer[2], NS_CAUSE_OM_INTERVENTION, 0x3344, 0x1122); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Peer port changes, RESET, NSEI changes ---\n\n"); |
| |
| send_ns_reset(nsi, &peer[3], NS_CAUSE_OM_INTERVENTION, 0x1122, 0x3344); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Peer port 3333, RESET, VCI is changed back ---\n\n"); |
| |
| send_ns_reset(nsi, &peer[2], NS_CAUSE_OM_INTERVENTION, 0x1122, 0x1122); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Peer port 4444, RESET, NSEI is changed back ---\n\n"); |
| |
| send_ns_reset(nsi, &peer[3], NS_CAUSE_OM_INTERVENTION, 0x1122, 0x1122); |
| gprs_dump_nsi(nsi); |
| |
| gprs_ns_destroy(nsi); |
| nsi = NULL; |
| } |
| |
| static void test_bss_reset_ack() |
| { |
| struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); |
| struct sockaddr_in peer[4] = {{0},}; |
| struct gprs_nsvc *nsvc; |
| struct sockaddr_in *nse[4]; |
| int rc; |
| |
| peer[0].sin_family = AF_INET; |
| peer[0].sin_port = htons(1111); |
| peer[0].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| peer[1].sin_family = AF_INET; |
| peer[1].sin_port = htons(2222); |
| peer[1].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| peer[2].sin_family = AF_INET; |
| peer[2].sin_port = htons(3333); |
| peer[2].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| peer[3].sin_family = AF_INET; |
| peer[3].sin_port = htons(4444); |
| peer[3].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); |
| |
| nse[0] = &peer[0]; |
| nse[1] = &peer[1]; |
| |
| printf("--- Setup VC 1 BSS -> SGSN ---\n\n"); |
| |
| setup_ns(nsi, nse[0], 0x1001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Setup VC 2 BSS -> SGSN ---\n\n"); |
| |
| setup_ns(nsi, nse[1], 0x2001, 0x2000); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Setup VC 1 SGSN -> BSS ---\n\n"); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, 0x1001); |
| gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| send_ns_reset_ack(nsi, nse[0], 0x1001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Exchange NSEI 1 + 2 links ---\n\n"); |
| |
| nse[1] = &peer[0]; |
| nse[0] = &peer[1]; |
| |
| printf("--- Setup VC 2 SGSN -> BSS (hits NSEI 1) ---\n\n"); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, 0x2001); |
| gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| send_ns_reset_ack(nsi, nse[0], 0x1001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Setup VC 2 SGSN -> BSS (hits NSEI 2) ---\n\n"); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, 0x2001); |
| rc = gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| OSMO_ASSERT(rc < 0); |
| |
| printf("--- Setup VC 1 SGSN -> BSS (hits NSEI 1) ---\n\n"); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, 0x1001); |
| gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| send_ns_reset_ack(nsi, nse[0], 0x1001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Setup VC 2 BSS -> SGSN ---\n\n"); |
| |
| setup_ns(nsi, nse[1], 0x2001, 0x2000); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 3rd paragraph. */ |
| /* This is not rejected because the NSEI has been |
| * assigned dynamically and not by configuration. |
| * This is not strictly spec conformant. */ |
| |
| printf("--- RESET with invalid NSEI, BSS -> SGSN ---\n\n"); |
| |
| send_ns_reset(nsi, nse[0], NS_CAUSE_OM_INTERVENTION, |
| 0x1001, 0xf000); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 2nd paragraph. */ |
| /* This is not rejected because the NSEI has been |
| * assigned dynamically and not by configuration. |
| * This is not strictly spec conformant. */ |
| |
| printf("--- RESET with invalid NSVCI, BSS -> SGSN ---\n\n"); |
| |
| send_ns_reset(nsi, nse[0], NS_CAUSE_OM_INTERVENTION, |
| 0xf001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- RESET with old NSEI, NSVCI, BSS -> SGSN ---\n\n"); |
| |
| send_ns_reset(nsi, nse[0], NS_CAUSE_OM_INTERVENTION, |
| 0x1001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 5th paragraph. */ |
| |
| printf("--- Unexpected RESET_ACK VC 1, BSS -> SGSN ---\n\n"); |
| |
| send_ns_reset_ack(nsi, nse[0], 0x1001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 4th paragraph. */ |
| |
| printf("--- RESET_ACK with invalid NSEI, BSS -> SGSN ---\n\n"); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, 0x1001); |
| gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| send_ns_reset_ack(nsi, nse[0], 0x1001, 0xf000); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 4th paragraph. */ |
| |
| printf("--- RESET_ACK with invalid NSVCI, BSS -> SGSN ---\n\n"); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, 0x1001); |
| gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| send_ns_reset_ack(nsi, nse[0], 0xf001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| /* Test crossing RESET and UNBLOCK_ACK */ |
| |
| printf("--- RESET (BSS -> SGSN) crossing an UNBLOCK_ACK (SGSN -> BSS) ---\n\n"); |
| |
| setup_ns(nsi, nse[0], 0x1001, 0x1000); |
| nsvc = gprs_nsvc_by_nsvci(nsi, 0x1001); |
| gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| OSMO_ASSERT(nsvc->state & NSE_S_BLOCKED); |
| OSMO_ASSERT(nsvc->state & NSE_S_RESET); |
| send_ns_unblock_ack(nsi, nse[0]); |
| gprs_dump_nsi(nsi); |
| send_ns_reset_ack(nsi, nse[0], 0x1001, 0x1000); |
| expire_nsvc_timer(nsvc); |
| OSMO_ASSERT(nsvc->state & NSE_S_BLOCKED); |
| OSMO_ASSERT(nsvc->state & NSE_S_RESET); |
| send_ns_reset_ack(nsi, nse[0], 0x1001, 0x1000); |
| gprs_dump_nsi(nsi); |
| |
| gprs_ns_destroy(nsi); |
| nsi = NULL; |
| } |
| |
| |
| static void test_sgsn_reset() |
| { |
| struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); |
| struct sockaddr_in sgsn_peer= {0}; |
| struct gprs_nsvc *nsvc; |
| |
| sgsn_peer.sin_family = AF_INET; |
| sgsn_peer.sin_port = htons(32000); |
| sgsn_peer.sin_addr.s_addr = htonl(REMOTE_SGSN_ADDR); |
| |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Setup SGSN connection, BSS -> SGSN ---\n\n"); |
| |
| gprs_ns_nsip_connect(nsi, &sgsn_peer, SGSN_NSEI, SGSN_NSEI+1); |
| send_ns_reset_ack(nsi, &sgsn_peer, SGSN_NSEI+1, SGSN_NSEI); |
| send_ns_alive_ack(nsi, &sgsn_peer); |
| send_ns_unblock_ack(nsi, &sgsn_peer); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- RESET, SGSN -> BSS ---\n\n"); |
| |
| send_ns_reset(nsi, &sgsn_peer, NS_CAUSE_OM_INTERVENTION, |
| SGSN_NSEI+1, SGSN_NSEI); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 3rd paragraph. */ |
| |
| printf("--- RESET with invalid NSEI, SGSN -> BSS ---\n\n"); |
| |
| send_ns_reset(nsi, &sgsn_peer, NS_CAUSE_OM_INTERVENTION, |
| SGSN_NSEI+1, 0xf000); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 2nd paragraph. */ |
| |
| printf("--- RESET with invalid NSVCI, SGSN -> BSS ---\n\n"); |
| |
| send_ns_reset(nsi, &sgsn_peer, NS_CAUSE_OM_INTERVENTION, |
| 0xf001, SGSN_NSEI); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- RESET, SGSN -> BSS ---\n\n"); |
| |
| send_ns_reset(nsi, &sgsn_peer, NS_CAUSE_OM_INTERVENTION, |
| SGSN_NSEI+1, SGSN_NSEI); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 5th paragraph. */ |
| |
| printf("--- Unexpected RESET_ACK VC 1, BSS -> SGSN ---\n\n"); |
| |
| send_ns_reset_ack(nsi, &sgsn_peer, SGSN_NSEI+1, SGSN_NSEI); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 4th paragraph. */ |
| |
| printf("--- RESET_ACK with invalid NSEI, BSS -> SGSN ---\n\n"); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, SGSN_NSEI+1); |
| gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| send_ns_reset_ack(nsi, &sgsn_peer, SGSN_NSEI+1, 0xe000); |
| gprs_dump_nsi(nsi); |
| |
| /* Test 3GPP TS 08.16, 7.3.1, 4th paragraph. */ |
| |
| printf("--- RESET_ACK with invalid NSVCI, BSS -> SGSN ---\n\n"); |
| |
| nsvc = gprs_nsvc_by_nsvci(nsi, SGSN_NSEI+1); |
| gprs_nsvc_reset(nsvc, NS_CAUSE_OM_INTERVENTION); |
| send_ns_reset_ack(nsi, &sgsn_peer, 0xe001, SGSN_NSEI); |
| gprs_dump_nsi(nsi); |
| |
| |
| gprs_ns_destroy(nsi); |
| nsi = NULL; |
| } |
| |
| static void test_sgsn_reset_invalid_state() |
| { |
| struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); |
| struct sockaddr_in sgsn_peer= {0}; |
| struct gprs_nsvc *nsvc; |
| int retry; |
| uint8_t dummy_sdu[] = {0x01, 0x02, 0x03, 0x04}; |
| |
| sgsn_peer.sin_family = AF_INET; |
| sgsn_peer.sin_port = htons(32000); |
| sgsn_peer.sin_addr.s_addr = htonl(REMOTE_SGSN_ADDR); |
| |
| gprs_dump_nsi(nsi); |
| |
| printf("=== %s ===\n", __func__); |
| printf("--- Setup SGSN connection, BSS -> SGSN ---\n\n"); |
| |
| gprs_ns_nsip_connect(nsi, &sgsn_peer, SGSN_NSEI, SGSN_NSEI+1); |
| OSMO_ASSERT(sent_pdu_type == NS_PDUT_RESET); |
| send_ns_reset_ack(nsi, &sgsn_peer, SGSN_NSEI+1, SGSN_NSEI); |
| OSMO_ASSERT(sent_pdu_type == NS_PDUT_ALIVE); |
| send_ns_alive_ack(nsi, &sgsn_peer); |
| OSMO_ASSERT(sent_pdu_type == NS_PDUT_UNBLOCK); |
| send_ns_unblock_ack(nsi, &sgsn_peer); |
| gprs_dump_nsi(nsi); |
| nsvc = gprs_nsvc_by_nsvci(nsi, SGSN_NSEI+1); |
| OSMO_ASSERT(nsvc->state == NSE_S_ALIVE); |
| OSMO_ASSERT(nsvc->remote_state == NSE_S_ALIVE); |
| |
| printf("--- Time out local test procedure ---\n\n"); |
| |
| OSMO_ASSERT(expire_nsvc_timer(nsvc) == NSVC_TIMER_TNS_TEST); |
| OSMO_ASSERT(expire_nsvc_timer(nsvc) == NSVC_TIMER_TNS_ALIVE); |
| |
| for (retry = 1; retry <= nsi->timeout[NS_TOUT_TNS_ALIVE_RETRIES]; ++retry) |
| OSMO_ASSERT(expire_nsvc_timer(nsvc) == NSVC_TIMER_TNS_ALIVE); |
| |
| OSMO_ASSERT(nsvc->state == NSE_S_BLOCKED); |
| |
| printf("--- Remote test procedure continues ---\n\n"); |
| |
| send_ns_alive(nsi, &sgsn_peer); |
| OSMO_ASSERT(sent_pdu_type == NS_PDUT_RESET); |
| |
| printf("--- Don't send a NS_RESET_ACK message (pretend it is lost) ---\n\n"); |
| |
| sent_pdu_type = -1; |
| send_ns_alive(nsi, &sgsn_peer); |
| OSMO_ASSERT(sent_pdu_type == -1); |
| |
| send_ns_reset_ack(nsi, &sgsn_peer, SGSN_NSEI+1, SGSN_NSEI); |
| OSMO_ASSERT(sent_pdu_type == NS_PDUT_ALIVE); |
| |
| send_ns_alive_ack(nsi, &sgsn_peer); |
| OSMO_ASSERT(nsvc->state == (NSE_S_ALIVE | NSE_S_BLOCKED)); |
| OSMO_ASSERT(nsvc->remote_state == (NSE_S_ALIVE | NSE_S_BLOCKED)); |
| OSMO_ASSERT(sent_pdu_type == NS_PDUT_UNBLOCK); |
| |
| send_ns_unblock_ack(nsi, &sgsn_peer); |
| OSMO_ASSERT(nsvc->state == NSE_S_ALIVE); |
| OSMO_ASSERT(nsvc->remote_state == NSE_S_ALIVE); |
| |
| send_ns_unitdata(nsi, &sgsn_peer, 0x1234, dummy_sdu, sizeof(dummy_sdu)); |
| |
| gprs_ns_destroy(nsi); |
| nsi = NULL; |
| } |
| |
| static void test_sgsn_output() |
| { |
| struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); |
| struct sockaddr_in sgsn_peer= {0}; |
| |
| sgsn_peer.sin_family = AF_INET; |
| sgsn_peer.sin_port = htons(32000); |
| sgsn_peer.sin_addr.s_addr = htonl(REMOTE_SGSN_ADDR); |
| |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Send message to SGSN ---\n\n"); |
| |
| gprs_send_message(nsi, "BSSGP RESET", SGSN_NSEI, 0, |
| gprs_bssgp_reset+4, sizeof(gprs_bssgp_reset)-4); |
| |
| printf("--- Setup dead connection to SGSN ---\n\n"); |
| |
| gprs_ns_nsip_connect(nsi, &sgsn_peer, SGSN_NSEI, SGSN_NSEI+1); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Send message to SGSN ---\n\n"); |
| |
| gprs_send_message(nsi, "BSSGP RESET", SGSN_NSEI, 0, |
| gprs_bssgp_reset+4, sizeof(gprs_bssgp_reset)-4); |
| |
| printf("--- Make connection to SGSN alive ---\n\n"); |
| |
| send_ns_reset_ack(nsi, &sgsn_peer, SGSN_NSEI+1, SGSN_NSEI); |
| send_ns_alive_ack(nsi, &sgsn_peer); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Send message to SGSN ---\n\n"); |
| |
| gprs_send_message(nsi, "BSSGP RESET", SGSN_NSEI, 0, |
| gprs_bssgp_reset+4, sizeof(gprs_bssgp_reset)-4); |
| |
| printf("--- Unblock connection to SGSN ---\n\n"); |
| |
| send_ns_unblock_ack(nsi, &sgsn_peer); |
| send_ns_alive(nsi, &sgsn_peer); |
| gprs_dump_nsi(nsi); |
| |
| printf("--- Send message to SGSN ---\n\n"); |
| |
| gprs_send_message(nsi, "BSSGP RESET", SGSN_NSEI, 0, |
| gprs_bssgp_reset+4, sizeof(gprs_bssgp_reset)-4); |
| |
| printf("--- Send empty message with BVCI to SGSN ---\n\n"); |
| |
| gprs_send_message(nsi, "[empty]", SGSN_NSEI, 0x0102, |
| gprs_bssgp_reset, 0); |
| |
| |
| gprs_ns_destroy(nsi); |
| nsi = NULL; |
| } |
| |
| |
| int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) |
| { |
| return -1; |
| } |
| |
| static struct log_info info = {}; |
| |
| int main(int argc, char **argv) |
| { |
| void *ctx = talloc_named_const(NULL, 0, "gprs_ns_test"); |
| osmo_init_logging2(ctx, &info); |
| log_set_use_color(osmo_stderr_target, 0); |
| log_set_print_category(osmo_stderr_target, 0); |
| log_set_print_category_hex(osmo_stderr_target, 0); |
| log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_NONE); |
| log_set_log_level(osmo_stderr_target, LOGL_INFO); |
| osmo_signal_register_handler(SS_L_NS, &test_signal, NULL); |
| |
| setlinebuf(stdout); |
| |
| printf("===== NS protocol test START\n"); |
| test_nsvc(); |
| test_ignored_messages(); |
| test_bss_port_changes(); |
| test_bss_reset_ack(); |
| test_sgsn_reset(); |
| test_sgsn_reset_invalid_state(); |
| test_sgsn_output(); |
| printf("===== NS protocol test END\n\n"); |
| |
| exit(EXIT_SUCCESS); |
| } |