cellular-infrastructure
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cellmgr-ng
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Merge branch 'zecke/m3ua'

This commit is contained in:
Holger Hans Peter Freyther 2015-04-16 14:27:24 -04:00
parent 4fd82de1ba 71477e1342
commit 5c25c78ec7
18 changed files with 789 additions and 219 deletions
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2
include/Makefile.am
View File

@ -1,4 +1,4 @@
noinst_HEADERS = mtp_level3.h mtp_data.h ipaccess.h thread.h mtp_pcap.h \
noinst_HEADERS = mtp_data.h ipaccess.h thread.h mtp_pcap.h \
mgcp_ss7.h bss_patch.h bssap_sccp.h bsc_data.h udp_input.h \
snmp_mtp.h cellmgr_debug.h bsc_sccp.h bsc_ussd.h sctp_m2ua.h \
isup_types.h counter.h msc_connection.h ss7_application.h \

8
include/mtp_data.h
View File

@ -41,6 +41,7 @@ enum ss7_link_type {
SS7_LTYPE_NONE,
SS7_LTYPE_UDP,
SS7_LTYPE_M2UA,
SS7_LTYPE_M3UA_CLIENT,
};
/**
@ -139,12 +140,14 @@ struct mtp_link {
struct rate_ctr_group *ctrg;
/* callback's to implement */
int (*start)(struct mtp_link *);
int (*write)(struct mtp_link *, struct msgb *msg);
int (*shutdown)(struct mtp_link *);
int (*reset)(struct mtp_link *data);
int (*clear_queue)(struct mtp_link *data);
/* for M3UA and others.. */
int skip_link_test;
/* private data */
enum ss7_link_type type;
void *data;
@ -191,4 +194,7 @@ struct mtp_link_set *mtp_link_set_num(struct bsc_data *bsc, int num);
struct mtp_link *mtp_link_alloc(struct mtp_link_set *set);
struct mtp_link *mtp_link_num(struct mtp_link_set *set, int num);
/* linkset handling */
int mtp_link_verified(struct mtp_link *link);
#endif

180
include/mtp_level3.h
View File

@ -1,180 +0,0 @@
/* Q.701-Q.704, Q.706, Q.707 handling code */
/*
* (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2010 by On-Waves
* All Rights Reserved
*
* 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/>.
*
*/
#ifndef mtp_level3_h
#define mtp_level3_h
#include <stdint.h>
#include <endian.h>
#include <sys/types.h>
/*
* pssible service information octets..
*/
#define MTP_NI_NATION_NET 0x02
#define MTP_SI_MNT_SNM_MSG 0x00
#define MTP_SI_MNT_REG_MSG 0x01
#define MTP_SI_MNT_SCCP 0x03
#define MTP_SI_MNT_ISUP 0x05
/*
* h0 contains the group, h1 the semantic of it
*/
#define MTP_TST_MSG_GRP 0x01
#define MTP_PROHIBIT_MSG_GRP 0x04
#define MTP_SROUTE_MSG_GRP 0x05
#define MTP_TRF_RESTR_MSG_GRP 0x07
/* h1 values for different groups */
#define MTP_TST_MSG_SLTM 0x01
#define MTP_TST_MSG_SLTA 0x02
#define MTP_RESTR_MSG_ALLWED 0x01
/* For the prohibit group */
#define MTP_PROHIBIT_MSG_SIG 0x01
#define MTP_PROHIBIT_MSG_TFA 0x05
/* For the Signalling-route-set-test */
#define MTP_SROUTE_MSG_TEST 0x01
#define SCCP_SST 0x03
#define SCCP_SSP 0x02
#define SCCP_SSA 0x01
#define MTP_LINK_MASK 0x0F
#define MTP_ADDR_MASK 0x3FFF
#define MTP_APOC_MASK 0x3f
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define MTP_LINK_SLS(addr) ((addr >>28) & MTP_LINK_MASK)
#define MTP_ADDR(link, dpc, opc) \
(((dpc) & MTP_ADDR_MASK) << 0 | \
((opc) & MTP_ADDR_MASK) << 14| \
((link) & MTP_LINK_MASK) << 28)
#define MTP_MAKE_APOC(apoc) \
(apoc & 0x3fff)
#define MTP_ADDR_DPC(addr) \
(addr & MTP_ADDR_MASK)
#define MTP_ADDR_OPC(addr) \
((addr >> 14) & MTP_ADDR_MASK)
#elif __BYTE_ORDER == __BIG_ENDIAN
static inline uint32_t c_swap_32(uint32_t in)
{
return (((in & 0x000000ff) << 24) |
((in & 0x0000ff00) << 8) |
((in & 0x00ff0000) >> 8) |
((in & 0xff000000) >> 24));
}
static inline uint16_t c_swap_16(uint16_t in)
{
return (((in & 0x00ff) << 8) |
(in & 0xff00) >> 8);
}
#define MTP_LINK_SLS(addr) ((c_swap_32(addr)>>28) & MTP_LINK_MASK)
#define MTP_ADDR(link, dpc, opc) \
c_swap_32(((dpc) & MTP_ADDR_MASK) << 0 | \
((opc) & MTP_ADDR_MASK) << 14| \
((link) & MTP_LINK_MASK) << 28)
#define MTP_MAKE_APOC(apoc) \
c_swap_16((apoc & 0x3fff))
#define MTP_ADDR_DPC(addr) \
(c_swap_32(addr) & MTP_ADDR_MASK)
#define MTP_ADDR_OPC(addr) \
((c_swap_32(addr) >> 14) & MTP_ADDR_MASK)
#endif
/*
* not the on wire address...
*/
struct mtp_addr {
uint16_t dpc;
uint16_t opc;
uint8_t link;
} __attribute__((packed));
/*
* the struct is defined in Q.704 and can be seen in the
* wireshark dissectors too
*/
struct mtp_level_3_hdr {
#if __BYTE_ORDER == __LITTLE_ENDIAN
uint8_t ser_ind : 4,
spare : 2,
ni : 2;
#elif __BYTE_ORDER == __BIG_ENDIAN
uint8_t ni : 2,
spare : 2,
ser_ind : 4;
#endif
uint32_t addr;
uint8_t data[0];
} __attribute__((packed));
struct mtp_level_3_cmn {
#if __BYTE_ORDER == __LITTLE_ENDIAN
uint8_t h0 : 4,
h1 : 4;
#elif __BYTE_ORDER == __BIG_ENDIAN
uint8_t h1 : 4,
h0 : 4;
#endif
} __attribute__((packed));
struct mtp_level_3_mng {
struct mtp_level_3_cmn cmn;
#if __BYTE_ORDER == __LITTLE_ENDIAN
uint8_t spare : 4,
length : 4;
#elif __BYTE_ORDER == __BIG_ENDIAN
uint8_t length : 4,
spare : 4;
#endif
uint8_t data[0];
} __attribute__((packed));
struct mtp_level_3_prohib {
struct mtp_level_3_cmn cmn;
uint16_t apoc;
} __attribute__((packed));
struct sccp_con_ctrl_prt_mgt {
uint8_t sst;
uint8_t assn; /* affected sub system number */
uint16_t apoc;
#if __BYTE_ORDER == __LITTLE_ENDIAN
uint8_t mul_ind : 2,
spare : 6;
#elif __BYTE_ORDER == __BIG_ENDIAN
uint8_t spare : 6,
mul_ind : 2;
#endif
} __attribute__((packed));
#endif

32
include/sctp_m3ua.h Normal file
View File

@ -0,0 +1,32 @@
/*
* Represet M3UA client (and later server) links
*/
#pragma once
#include "mtp_data.h"
#include <osmocom/core/write_queue.h>
#include <netinet/in.h>
struct mtp_m3ua_client_link {
struct mtp_link *base;
struct osmo_wqueue queue;
struct osmo_timer_list connect_timer;
char *source;
struct sockaddr_in local;
char *dest;
struct sockaddr_in remote;
int link_index;
int routing_context;
/* state of the link */
int aspsm_active;
int asptm_active;
};
struct mtp_m3ua_client_link *mtp_m3ua_client_link_init(struct mtp_link *link);

2
src/Makefile.am
View File

@ -26,7 +26,7 @@ osmo_stp_SOURCES = main_stp.c mtp_layer3.c thread.c pcap.c link_udp.c snmp_mtp.c
bss_patch.c bssap_sccp.c bsc_sccp.c bsc_ussd.c input/ipaccess.c \
mtp_link.c counter.c bsc.c ss7_application.c \
vty_interface.c vty_interface_cmds.c mgcp_patch.c \
mgcp_callagent.c isup_filter.c
mgcp_callagent.c isup_filter.c sctp_m3ua_client.c
osmo_stp_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(LIBOSMOVTY_LIBS) \
$(LIBOSMOSCCP_LIBS) $(NEXUSWARE_C7_LIBS) \
-lpthread -lnetsnmp -lcrypto -lxua -lsctp

2
src/isup.c
View File

@ -21,7 +21,7 @@
#include <isup_types.h>
#include <cellmgr_debug.h>
#include <mtp_data.h>
#include <mtp_level3.h>
#include <osmocom/mtp/mtp_level3.h>
#include <osmocom/core/msgb.h>
#include <osmocom/gsm/tlv.h>

7
src/link_udp.c
View File

@ -223,12 +223,6 @@ static int udp_link_write(struct mtp_link *link, struct msgb *msg)
return 0;
}
static int udp_link_start(struct mtp_link *link)
{
do_start(link);
return 0;
}
int link_udp_init(struct mtp_udp_link *link, char *remote, int port)
{
/* prepare the remote */
@ -383,7 +377,6 @@ struct mtp_udp_link *mtp_udp_link_init(struct mtp_link *blnk)
lnk->base->clear_queue = udp_link_dummy;
lnk->base->reset = udp_link_reset;
lnk->base->start = udp_link_start;
lnk->base->write = udp_link_write;
/* prepare the remote */

2
src/links.c
View File

@ -24,7 +24,7 @@
#include <cellmgr_debug.h>
#include <msc_connection.h>
#include <mtp_data.h>
#include <mtp_level3.h>
#include <osmocom/mtp/mtp_level3.h>
#include <mtp_pcap.h>
#include <snmp_mtp.h>

2
src/main.c
View File

@ -21,7 +21,7 @@
#include <mtp_data.h>
#include <msc_connection.h>
#include <mtp_level3.h>
#include <osmocom/mtp/mtp_level3.h>
#include <thread.h>
#include <bss_patch.h>
#include <bssap_sccp.h>

2
src/main_stp.c
View File

@ -21,7 +21,7 @@
*/
#include <mtp_data.h>
#include <mtp_level3.h>
#include <osmocom/mtp/mtp_level3.h>
#include <mtp_pcap.h>
#include <thread.h>
#include <bsc_data.h>

10
src/mtp_layer3.c
View File

@ -19,7 +19,7 @@
*
*/
#include <mtp_data.h>
#include <mtp_level3.h>
#include <osmocom/mtp/mtp_level3.h>
#include <bsc_data.h>
#include <cellmgr_debug.h>
#include <isup_types.h>
@ -231,7 +231,7 @@ static int send_tfa(struct mtp_link *link, int opc)
return 0;
}
static int linkset_up(struct mtp_link *link)
int mtp_link_verified(struct mtp_link *link)
{
struct mtp_link_set *set = link->set;
@ -368,9 +368,9 @@ static int mtp_link_regular_msg(struct mtp_link *link, struct mtp_level_3_hdr *h
return -1;
}
if (MTP_ADDR_DPC(hdr->addr) != link->set->opc) {
if (MTP_READ_DPC(hdr->addr) != link->set->opc) {
LOGP(DINP, LOGL_ERROR, "MSG for OPC %d not handled on %d/%s\n",
MTP_ADDR_DPC(hdr->addr), link->set->nr, link->set->name);
MTP_READ_DPC(hdr->addr), link->set->nr, link->set->name);
return -1;
}
@ -394,7 +394,7 @@ static int mtp_link_regular_msg(struct mtp_link *link, struct mtp_level_3_hdr *h
case MTP_TST_MSG_SLTA:
/* If this link is proven set it up */
if (mtp_link_slta(link, l3_len, mng) == 0)
linkset_up(link);
mtp_link_verified(link);
break;
}
break;

12
src/mtp_link.c
View File

@ -20,7 +20,7 @@
*/
#include <mtp_data.h>
#include <mtp_level3.h>
#include <osmocom/mtp/mtp_level3.h>
#include <cellmgr_debug.h>
#include <counter.h>
@ -132,6 +132,15 @@ void mtp_link_start_link_test(struct mtp_link *link)
return;
}
if (link->skip_link_test) {
LOGP(DINP, LOGL_ERROR, "Skipping starting linktest on %d/%s of %d/%s.\n",
link->nr, link->name, link->set->nr, link->set->name);
link->sltm_pending = 0;
link->was_up = 1;
mtp_link_verified(link);
return;
}
mtp_sltm_t2_timeout(link);
}
@ -224,7 +233,6 @@ struct mtp_link *mtp_link_alloc(struct mtp_link_set *set)
}
/* make sure a unconfigured link does not crash */
link->start = dummy_arg1;
link->write = dummy_arg2;
link->shutdown = dummy_arg1;
link->reset = dummy_arg1;

2
src/sccp_state.c
View File

@ -21,7 +21,7 @@
#include <mtp_data.h>
#include <msc_connection.h>
#include <mtp_level3.h>
#include <osmocom/mtp/mtp_level3.h>
#include <bss_patch.h>
#include <bssap_sccp.h>
#include <bsc_data.h>

9
src/sctp_m2ua.c
View File

@ -734,14 +734,6 @@ static int sctp_m2ua_dummy(struct mtp_link *link)
return 0;
}
static int sctp_m2ua_start(struct mtp_link *_link)
{
struct mtp_m2ua_link *link = (struct mtp_m2ua_link *) _link->data;
link->transport->started = 1;
return 0;
}
static int sctp_m2ua_reset(struct mtp_link *_link)
{
struct mtp_m2ua_link *link = (struct mtp_m2ua_link *) _link->data;
@ -843,7 +835,6 @@ struct mtp_m2ua_link *mtp_m2ua_link_init(struct mtp_link *blnk)
lnk->base->shutdown = sctp_m2ua_reset;
lnk->base->clear_queue = sctp_m2ua_dummy;
lnk->base->reset = sctp_m2ua_reset;
lnk->base->start = sctp_m2ua_start;
lnk->base->write = sctp_m2ua_write;
lnk->transport = trans;

566
src/sctp_m3ua_client.c Normal file
View File

@ -0,0 +1,566 @@
/* Run M3UA over SCTP here */
/* (C) 2015 by Holger Hans Peter Freyther
*
* 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 <sctp_m3ua.h>
#include <cellmgr_debug.h>
#include <string.h>
#include <bsc_data.h>
#include <osmocom/sigtran/xua_msg.h>
#include <osmocom/sigtran/m3ua_types.h>
#include <osmocom/mtp/mtp_level3.h>
#include <osmocom/core/talloc.h>
#include <netinet/sctp.h>
#include <unistd.h>
#define SCTP_PPID_M3UA 3
#define notImplemented() \
LOGP(DINP, LOGL_NOTICE, "%s not implemented.\n", __func__)
/*
* State machine code
*/
static void m3ua_handle_aspsm(struct mtp_m3ua_client_link *link, struct xua_msg *msg);
static void m3ua_handle_asptm(struct mtp_m3ua_client_link *link, struct xua_msg *msg);
static void m3ua_handle_trans(struct mtp_m3ua_client_link *link, struct xua_msg *msg);
static void m3ua_send_daud(struct mtp_m3ua_client_link *link, uint32_t pc);
static void m3ua_send_aspup(struct mtp_m3ua_client_link *link);
static void m3ua_send_aspac(struct mtp_m3ua_client_link *link);
/*
* boilerplate
*/
static int m3ua_shutdown(struct mtp_link *mtp_link);
static void m3ua_start(void *data);
static void schedule_restart(struct mtp_m3ua_client_link *link)
{
link->connect_timer.data = link;
link->connect_timer.cb = m3ua_start;
osmo_timer_schedule(&link->connect_timer, 1, 0);
}
static void fail_link(struct mtp_m3ua_client_link *link)
{
/* We need to fail the link */
m3ua_shutdown(link->base);
mtp_link_down(link->base);
schedule_restart(link);
}
static int m3ua_conn_handle(struct mtp_m3ua_client_link *link,
struct msgb *msg, struct sctp_sndrcvinfo *info)
{
struct xua_msg *m3ua;
m3ua = xua_from_msg(M3UA_VERSION, msg->len, msg->data);
if (!m3ua) {
LOGP(DINP, LOGL_ERROR, "Failed to parse the message.\n");
return -1;
}
switch (m3ua->hdr.msg_class) {
case M3UA_CLS_ASPSM:
m3ua_handle_aspsm(link, m3ua);
break;
case M3UA_CLS_ASPTM:
m3ua_handle_asptm(link, m3ua);
break;
case M3UA_CLS_TRANS:
m3ua_handle_trans(link, m3ua);
break;
default:
LOGP(DINP, LOGL_ERROR, "Unhandled msg_class %d\n",
m3ua->hdr.msg_class);
break;
}
xua_msg_free(m3ua);
return 0;
}
static int m3ua_conn_write(struct osmo_fd *fd, struct msgb *msg)
{
int ret;
struct sctp_sndrcvinfo info;
memcpy(&info, msg->data, sizeof(info));
ret = sctp_send(fd->fd, msg->l2h, msgb_l2len(msg),
&info, 0);
if (ret != msgb_l2len(msg))
LOGP(DINP, LOGL_ERROR, "Failed to send %d.\n", ret);
return 0;
}
static int m3ua_conn_send(struct mtp_m3ua_client_link *link,
struct xua_msg *m3ua,
struct sctp_sndrcvinfo *info)
{
struct msgb *msg;
msg = xua_to_msg(M3UA_VERSION, m3ua);
if (!msg)
return -1;
/* save the OOB data in front of the message */
msg->l2h = msg->data;
msgb_push(msg, sizeof(*info));
memcpy(msg->data, info, sizeof(*info));
if (osmo_wqueue_enqueue(&link->queue, msg) != 0) {
LOGP(DINP, LOGL_ERROR, "Failed to enqueue.\n");
msgb_free(msg);
return -1;
}
return 0;
}
static int m3ua_conn_read(struct osmo_fd *fd)
{
struct sockaddr_in addr;
struct sctp_sndrcvinfo info;
socklen_t len = sizeof(addr);
struct mtp_m3ua_client_link *link = fd->data;
struct msgb *msg;
int rc;
msg = msgb_alloc(2048, "m3ua buffer");
if (!msg) {
LOGP(DINP, LOGL_ERROR, "Failed to allocate buffer.\n");
fail_link(link);
return -1;
}
memset(&info, 0, sizeof(info));
memset(&addr, 0, sizeof(addr));
rc = sctp_recvmsg(fd->fd, msg->data, msg->data_len,
(struct sockaddr *) &addr, &len, &info, NULL);
if (rc <= 0) {
LOGP(DINP, LOGL_ERROR, "Failed to read.\n");
msgb_free(msg);
fail_link(link);
return -1;
}
if (ntohl(info.sinfo_ppid) != SCTP_PPID_M3UA) {
LOGP(DINP, LOGL_ERROR, "Only M3UA is allowed on this socket: %d\n",
ntohl(info.sinfo_ppid));
msgb_free(msg);
return -1;
}
msgb_put(msg, rc);
LOGP(DINP, LOGL_DEBUG, "Read %d on stream: %d ssn: %d assoc: %d\n",
rc, info.sinfo_stream, info.sinfo_ssn, info.sinfo_assoc_id);
m3ua_conn_handle(link, msg, &info);
msgb_free(msg);
return 0;
}
static void m3ua_start(void *data)
{
int sctp, ret;
struct sockaddr_in loc_addr, rem_addr;
struct mtp_m3ua_client_link *link = data;
struct sctp_event_subscribe events;
sctp = socket(PF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (!sctp) {
LOGP(DINP, LOGL_ERROR, "Failed to create socket.\n");
return fail_link(link);
}
memset(&events, 0, sizeof(events));
events.sctp_data_io_event = 1;
ret = setsockopt(sctp, SOL_SCTP, SCTP_EVENTS, &events, sizeof(events));
if (ret != 0) {
LOGP(DINP, LOGL_ERROR, "Failed to enable SCTP Events. Closing socket.\n");
close(sctp);
return fail_link(link);
}
loc_addr = link->local;
loc_addr.sin_family = AF_INET;
if (bind(sctp, (struct sockaddr *) &loc_addr, sizeof(loc_addr)) != 0) {
LOGP(DINP, LOGL_ERROR, "Failed to bind.\n");
close(sctp);
return fail_link(link);
}
rem_addr = link->remote;
rem_addr.sin_family = AF_INET;
if (connect(sctp, (struct sockaddr *) &rem_addr, sizeof(rem_addr)) != 0) {
LOGP(DINP, LOGL_ERROR, "Failed to connect\n");
close(sctp);
return fail_link(link);
}
link->queue.bfd.fd = sctp;
link->queue.bfd.data = link;
link->queue.bfd.when = BSC_FD_READ;
link->queue.read_cb = m3ua_conn_read;
link->queue.write_cb = m3ua_conn_write;
if (osmo_fd_register(&link->queue.bfd) != 0) {
LOGP(DINP, LOGL_ERROR, "Failed to register fd\n");
close(sctp);
return fail_link(link);
}
/* begin the messages for bring-up */
m3ua_send_aspup(link);
}
static int m3ua_write(struct mtp_link *mtp_link, struct msgb *msg)
{
struct mtp_m3ua_client_link *link = mtp_link->data;
struct sctp_sndrcvinfo info;
struct xua_msg *m3ua;
struct mtp_level_3_hdr *mtp_hdr;
struct m3ua_protocol_data proto_data;
uint8_t *proto_start;
if (!link->asptm_active) {
LOGP(DINP, LOGL_ERROR, "ASP not ready for %d/%s of %d/%s.\n",
mtp_link->nr, mtp_link->name, mtp_link->set->nr,
mtp_link->set->name);
goto clean;
}
/*
* TODO.. we could enhance the structure of mtp_link to
* have function pointers for operations like SLTM instead
* of doing what we do here.
* The entire m3ua episode (code + reading the spec) had a
* budget of < 2 man days so the amount of architecture changes
* we can do.
*/
/* TODO.. need to terminate MTPL3 locally... */
/* TODO.. extract MTP information.. */
mtp_hdr = (struct mtp_level_3_hdr *) msg->l2h;
switch (mtp_hdr->ser_ind) {
case MTP_SI_MNT_SNM_MSG:
case MTP_SI_MNT_REG_MSG:
LOGP(DINP, LOGL_ERROR,
"Dropping SNM/REG message %d\n", mtp_hdr->ser_ind);
goto clean;
break;
case MTP_SI_MNT_ISUP:
case MTP_SI_MNT_SCCP:
default:
memset(&proto_data, 0, sizeof(proto_data));
proto_data.opc = htonl(MTP_READ_OPC(mtp_hdr->addr));
proto_data.dpc = htonl(MTP_READ_DPC(mtp_hdr->addr));
proto_data.sls = MTP_LINK_SLS(mtp_hdr->addr);
proto_data.si = mtp_hdr->ser_ind;
proto_data.ni = mtp_link->set->ni;
msg->l3h = mtp_hdr->data;
msgb_pull_to_l3(msg);
proto_start = msgb_push(msg, sizeof(proto_data));
memcpy(proto_start, &proto_data, sizeof(proto_data));
break;
};
m3ua = xua_msg_alloc();
if (!m3ua)
goto clean;
mtp_handle_pcap(mtp_link, NET_OUT, msg->data, msg->len);
m3ua->hdr.msg_class = M3UA_CLS_TRANS;
m3ua->hdr.msg_type = M3UA_TRANS_DATA;
/*
* Modify the data...to create a true protocol data..
*/
xua_msg_add_data(m3ua, M3UA_TAG_PROTO_DATA, msg->len, msg->data);
memset(&info, 0, sizeof(info));
info.sinfo_stream = 1;
info.sinfo_assoc_id = 1;
info.sinfo_ppid = htonl(SCTP_PPID_M3UA);
m3ua_conn_send(link, m3ua, &info);
xua_msg_free(m3ua);
clean:
msgb_free(msg);
return 0;
}
static int m3ua_shutdown(struct mtp_link *mtp_link)
{
struct mtp_m3ua_client_link *link = mtp_link->data;
if (link->queue.bfd.fd >= 0) {
osmo_fd_unregister(&link->queue.bfd);
close(link->queue.bfd.fd);
link->queue.bfd.fd = -1;
}
osmo_wqueue_clear(&link->queue);
link->aspsm_active = 0;
link->asptm_active = 0;
return 0;
}
static int m3ua_reset(struct mtp_link *mtp_link)
{
struct mtp_m3ua_client_link *link = mtp_link->data;
/* stop things in case they run.. */
m3ua_shutdown(mtp_link);
schedule_restart(link);
return 0;
}
static int m3ua_clear_queue(struct mtp_link *mtp_link)
{
struct mtp_m3ua_client_link *link = mtp_link->data;
osmo_wqueue_clear(&link->queue);
return 0;
}
struct mtp_m3ua_client_link *mtp_m3ua_client_link_init(struct mtp_link *blnk)
{
struct mtp_m3ua_client_link *lnk;
lnk = talloc_zero(blnk, struct mtp_m3ua_client_link);
if (!lnk) {
LOGP(DINP, LOGL_ERROR, "Failed to allocate.\n");
return NULL;
}
/* make sure we can resolve it both ways */
lnk->base = blnk;
blnk->data = lnk;
blnk->type = SS7_LTYPE_M3UA_CLIENT;
/* do some checks for lower layer handling */
blnk->skip_link_test = 1;
lnk->base->write = m3ua_write;
lnk->base->shutdown = m3ua_shutdown;
lnk->base->reset = m3ua_reset;
lnk->base->clear_queue = m3ua_clear_queue;
osmo_wqueue_init(&lnk->queue, 10);
lnk->queue.bfd.fd = -1;
return lnk;
}
/*
* asp handling
*/
static void m3ua_send_aspup(struct mtp_m3ua_client_link *link)
{
struct sctp_sndrcvinfo info;
struct xua_msg *aspup;
uint32_t asp_ident;
aspup = xua_msg_alloc();
if (!aspup) {
fail_link(link);
return;
}
memset(&info, 0, sizeof(info));
info.sinfo_stream = 0;
info.sinfo_assoc_id = 1;
info.sinfo_ppid = htonl(SCTP_PPID_M3UA);
aspup->hdr.msg_class = M3UA_CLS_ASPSM;
aspup->hdr.msg_type = M3UA_ASPSM_UP;
asp_ident = htonl(link->link_index);
xua_msg_add_data(aspup, MUA_TAG_ASP_IDENT, 4, (uint8_t *) &asp_ident);
m3ua_conn_send(link, aspup, &info);
xua_msg_free(aspup);
}
static void m3ua_send_aspac(struct mtp_m3ua_client_link *link)
{
struct sctp_sndrcvinfo info;
struct xua_msg *aspac;
uint32_t routing_ctx;
uint32_t traffic_mode;
aspac = xua_msg_alloc();
if (!aspac) {
fail_link(link);
return;
}
memset(&info, 0, sizeof(info));
info.sinfo_stream = 0;
info.sinfo_assoc_id = 1;
info.sinfo_ppid = htonl(SCTP_PPID_M3UA);
aspac->hdr.msg_class = M3UA_CLS_ASPTM;
aspac->hdr.msg_type = M3UA_ASPTM_ACTIV;
traffic_mode = htonl(2);
xua_msg_add_data(aspac, 11, 4, (uint8_t *) &traffic_mode);
routing_ctx = htonl(link->routing_context);
xua_msg_add_data(aspac, MUA_TAG_ROUTING_CTX, 4, (uint8_t *) &routing_ctx);
m3ua_conn_send(link, aspac, &info);
xua_msg_free(aspac);
}
static void m3ua_send_daud(struct mtp_m3ua_client_link *link, uint32_t dpc)
{
struct sctp_sndrcvinfo info;
struct xua_msg *daud;
uint32_t routing_ctx;
daud = xua_msg_alloc();
if (!daud) {
fail_link(link);
return;
}
memset(&info, 0, sizeof(info));
info.sinfo_stream = 0;
info.sinfo_assoc_id = 1;
info.sinfo_ppid = htonl(SCTP_PPID_M3UA);
daud->hdr.msg_class = M3UA_CLS_SSNM;
daud->hdr.msg_type = M3UA_SSNM_DAUD;
routing_ctx = htonl(link->routing_context);
xua_msg_add_data(daud, MUA_TAG_ROUTING_CTX, 4, (uint8_t *) &routing_ctx);
dpc = htonl(dpc);
xua_msg_add_data(daud, MUA_TAG_AFF_PC, 4, (uint8_t *) &dpc);
m3ua_conn_send(link, daud, &info);
xua_msg_free(daud);
}
static void m3ua_handle_aspsm(struct mtp_m3ua_client_link *link, struct xua_msg *m3ua)
{
switch (m3ua->hdr.msg_type) {
case M3UA_ASPSM_UP_ACK:
LOGP(DINP, LOGL_NOTICE, "Received ASP_UP_ACK.. sending ASPAC\n");
link->aspsm_active = 1;
m3ua_send_aspac(link);
break;
default:
LOGP(DINP, LOGL_ERROR, "Unhandled msg_type %d\n",
m3ua->hdr.msg_type);
break;
}
}
static void m3ua_handle_asptm(struct mtp_m3ua_client_link *link, struct xua_msg *m3ua)
{
switch (m3ua->hdr.msg_type) {
case M3UA_ASPTM_ACTIV_ACK:
LOGP(DINP, LOGL_NOTICE, "Received ASPAC_ACK.. taking link up\n");
link->asptm_active = 1;
mtp_link_up(link->base);
m3ua_send_daud(link, link->base->set->dpc);
if (link->base->set->sccp_dpc != -1)
m3ua_send_daud(link, link->base->set->sccp_dpc);
break;
default:
LOGP(DINP, LOGL_ERROR, "Unhandled msg_type %d\n",
m3ua->hdr.msg_type);
break;
}
}
static void m3ua_handle_trans(struct mtp_m3ua_client_link *link, struct xua_msg *m3ua)
{
struct msgb *msg;
struct xua_msg_part *data;
struct mtp_link *mtp_link;
struct m3ua_protocol_data *proto;
struct mtp_level_3_hdr *mtp_hdr;
uint32_t opc, dpc;
uint8_t sls, si;
mtp_link = link->base;
/* ignore everything if the link is blocked */
if (mtp_link->blocked)
return;
if (m3ua->hdr.msg_type != M3UA_TRANS_DATA) {
LOGP(DINP, LOGL_ERROR, "msg_type(%d) is not known. Ignoring\n",
m3ua->hdr.msg_type);
return;
}
data = xua_msg_find_tag(m3ua, M3UA_TAG_PROTO_DATA);
if (!data) {
LOGP(DINP, LOGL_ERROR, "No PROTO_DATA in DATA message.\n");
return;
}
if (data->len > 2048) {
LOGP(DINP, LOGL_ERROR, "TOO much data for us to handle.\n");
return;
}
if (data->len < sizeof(struct m3ua_protocol_data)) {
LOGP(DINP, LOGL_ERROR, "Too little data..\n");
return;
}
msg = msgb_alloc(2048, "m3ua-data");
if (!msg) {
LOGP(DINP, LOGL_ERROR, "Failed to allocate storage.\n");
return;
}
msg->l2h = msgb_put(msg, data->len);
memcpy(msg->l2h, data->dat, data->len);
proto = (struct m3ua_protocol_data *) msg->l2h;
opc = ntohl(proto->opc);
dpc = ntohl(proto->dpc);
sls = proto->sls;
si = proto->si;
LOGP(DINP, LOGL_DEBUG, "Got data for OPC(%d)/DPC(%d)/SLS(%d) len(%d)\n",
opc, dpc, sls, msgb_l2len(msg) - sizeof(*proto));
/* put a MTP3 header in front */
msg->l3h = proto->data;
msgb_pull_to_l3(msg);
msg->l2h = msgb_push(msg, sizeof(*mtp_hdr));
mtp_hdr = (struct mtp_level_3_hdr *) msg->l2h;
mtp_hdr->ser_ind = si;
mtp_hdr->addr = MTP_ADDR(sls % 16, dpc, opc);
mtp_handle_pcap(mtp_link, NET_IN, msg->l2h, msgb_l2len(msg));
mtp_link_set_data(mtp_link, msg);
msgb_free(msg);
}

158
src/vty_interface.c
View File

@ -23,6 +23,7 @@
#include <mtp_pcap.h>
#include <msc_connection.h>
#include <sctp_m2ua.h>
#include <sctp_m3ua.h>
#include <ss7_application.h>
#include <ss7_vty.h>
#include <cellmgr_debug.h>
@ -157,6 +158,7 @@ static void write_link(struct vty *vty, struct mtp_link *link)
const char *name = link->name ? link->name : "";
struct mtp_udp_link *ulnk;
struct mtp_m2ua_link *m2ua;
struct mtp_m3ua_client_link *m3ua_client;
vty_out(vty, " link %d%s", link->nr, VTY_NEWLINE);
vty_out(vty, " description %s%s", name, VTY_NEWLINE);
@ -179,11 +181,27 @@ static void write_link(struct vty *vty, struct mtp_link *link)
vty_out(vty, " ss7-transport m2ua%s", VTY_NEWLINE);
if (m2ua->as)
vty_out(vty, " m2ua application-server %s%s",
vty_out(vty, " m2ua application-server-index %s%s",
m2ua->as, VTY_NEWLINE);
vty_out(vty, " m2ua link-index %d%s",
m2ua->link_index, VTY_NEWLINE);
break;
case SS7_LTYPE_M3UA_CLIENT:
m3ua_client = (struct mtp_m3ua_client_link *) link->data;
vty_out(vty, " ss7-transport m3ua-client%s", VTY_NEWLINE);
vty_out(vty, " m3ua-client source ip %s%s",
inet_ntoa(m3ua_client->local.sin_addr), VTY_NEWLINE);
vty_out(vty, " m3ua-client source port %d%s",
ntohs(m3ua_client->local.sin_port), VTY_NEWLINE);
vty_out(vty, " m3ua-client dest ip %s%s",
inet_ntoa(m3ua_client->remote.sin_addr), VTY_NEWLINE);
vty_out(vty, " m3ua-client dest port %d%s",
ntohs(m3ua_client->remote.sin_port), VTY_NEWLINE);
vty_out(vty, " m3ua-client link-index %d%s",
m3ua_client->link_index, VTY_NEWLINE);
vty_out(vty, " m3ua-client routing-context %d%s",
m3ua_client->routing_context, VTY_NEWLINE);
break;
case SS7_LTYPE_NONE:
break;
}
@ -573,7 +591,7 @@ DEFUN(cfg_linkset_link, cfg_linkset_link_cmd,
}
DEFUN(cfg_link_ss7_transport, cfg_link_ss7_transport_cmd,
"ss7-transport (none|udp|m2ua)",
"ss7-transport (none|udp|m2ua|m3ua-client)",
"SS7 transport for the link\n"
"No transport\n" "MTP over UDP\n" "SCTP M2UA\n")
{
@ -586,6 +604,8 @@ DEFUN(cfg_link_ss7_transport, cfg_link_ss7_transport_cmd,
wanted = SS7_LTYPE_UDP;
else if (strcmp("m2ua", argv[0]) == 0)
wanted = SS7_LTYPE_M2UA;
else if (strcmp("m3ua-client", argv[0]) == 0)
wanted = SS7_LTYPE_M3UA_CLIENT;
if (link->type != wanted && link->type != SS7_LTYPE_NONE) {
vty_out(vty, "%%Can not change the type of a link.\n");
@ -599,6 +619,9 @@ DEFUN(cfg_link_ss7_transport, cfg_link_ss7_transport_cmd,
case SS7_LTYPE_M2UA:
link->data = mtp_m2ua_link_init(link);
break;
case SS7_LTYPE_M3UA_CLIENT:
link->data = mtp_m3ua_client_link_init(link);
break;
case SS7_LTYPE_NONE:
/* nothing */
break;
@ -735,6 +758,131 @@ DEFUN(cfg_link_m2ua_link_index, cfg_link_m2ua_link_index_cmd,
return CMD_SUCCESS;
}
DEFUN(cfg_link_m3ua_client_source_ip, cfg_link_m3ua_client_source_ip_cmd,
"m3ua-client source ip HOST_NAME",
"M3UA Client\n" "Source Address\n" "IP\n" "Hostname or IPv4 address\n")
{
struct hostent *hosts;
struct mtp_link *link = vty->index;
struct mtp_m3ua_client_link *m3ua_link;
if (link->type != SS7_LTYPE_M3UA_CLIENT) {
vty_out(vty, "%%This only applies to UDP links.%s", VTY_NEWLINE);
return CMD_WARNING;
}
m3ua_link = link->data;
talloc_free(m3ua_link->source);
m3ua_link->source = talloc_strdup(m3ua_link, argv[0]);
hosts = gethostbyname(m3ua_link->source);
if (!hosts || hosts->h_length < 1 || hosts->h_addrtype != AF_INET) {
vty_out(vty, "Failed to resolve '%s'%s", argv[0], VTY_NEWLINE);
return CMD_WARNING;
}
m3ua_link->local.sin_addr = * (struct in_addr *) hosts->h_addr_list[0];
return CMD_SUCCESS;
}
DEFUN(cfg_link_m3ua_client_source_port, cfg_link_m3ua_client_source_port_cmd,
"m3ua-client source port <1-65535>",
"M3UA Client\n" "Source Address\n" "Port\n" "Number\n")
{
struct mtp_link *link = vty->index;
struct mtp_m3ua_client_link *m3ua_link;
if (link->type != SS7_LTYPE_M3UA_CLIENT) {
vty_out(vty, "%%This only applies to UDP links.%s", VTY_NEWLINE);
return CMD_WARNING;
}
m3ua_link = link->data;
m3ua_link->local.sin_port = htons(atoi(argv[0]));
return CMD_SUCCESS;
}
DEFUN(cfg_link_m3ua_client_dest_ip, cfg_link_m3ua_client_dest_ip_cmd,
"m3ua-client dest ip HOST_NAME",
"M3UA Client\n" "Destination Address\n" "IP\n" "Hostname or IPv4 address\n")
{
struct hostent *hosts;
struct mtp_link *link = vty->index;
struct mtp_m3ua_client_link *m3ua_link;
if (link->type != SS7_LTYPE_M3UA_CLIENT) {
vty_out(vty, "%%This only applies to M3UA client links.%s", VTY_NEWLINE);
return CMD_WARNING;
}
m3ua_link = link->data;
talloc_free(m3ua_link->dest);
m3ua_link->dest = talloc_strdup(m3ua_link, argv[0]);
hosts = gethostbyname(m3ua_link->dest);
if (!hosts || hosts->h_length < 1 || hosts->h_addrtype != AF_INET) {
vty_out(vty, "Failed to resolve '%s'%s", argv[0], VTY_NEWLINE);
return CMD_WARNING;
}
m3ua_link->remote.sin_addr = * (struct in_addr *) hosts->h_addr_list[0];
return CMD_SUCCESS;
}
DEFUN(cfg_link_m3ua_client_dest_port, cfg_link_m3ua_client_dest_port_cmd,
"m3ua-client dest port <1-65535>",
"M3UA Client\n" "Destination Address\n" "Port\n" "Number\n")
{
struct mtp_link *link = vty->index;
struct mtp_m3ua_client_link *m3ua_link;
if (link->type != SS7_LTYPE_M3UA_CLIENT) {
vty_out(vty, "%%This only applies to M3UA client links.%s", VTY_NEWLINE);
return CMD_WARNING;
}
m3ua_link = link->data;
m3ua_link->remote.sin_port = htons(atoi(argv[0]));
return CMD_SUCCESS;
}
DEFUN(cfg_link_m3ua_client_link_index, cfg_link_m3ua_client_link_index_cmd,
"m3ua-client link-index <0-65535>",
"M3UA Client\n" "Link index\n" "Index\n")
{
struct mtp_link *link = vty->index;
struct mtp_m3ua_client_link *m3ua_link;
if (link->type != SS7_LTYPE_M3UA_CLIENT) {
vty_out(vty, "%%This only applies to M3UA client links.%s", VTY_NEWLINE);
return CMD_WARNING;
}
m3ua_link = link->data;
m3ua_link->link_index = atoi(argv[0]);
return CMD_SUCCESS;
}
DEFUN(cfg_link_m3ua_client_routing_ctx, cfg_link_m3ua_client_routing_ctx_cmd,
"m3ua-client routing-context <0-65535>",
"M3UA Client\n" "Routing Context\n" "Nunber\n")
{
struct mtp_link *link = vty->index;
struct mtp_m3ua_client_link *m3ua_link;
if (link->type != SS7_LTYPE_M3UA_CLIENT) {
vty_out(vty, "%%This only applies to M3UA client links.%s", VTY_NEWLINE);
return CMD_WARNING;
}
m3ua_link = link->data;
m3ua_link->routing_context = atoi(argv[0]);
return CMD_SUCCESS;
}
DEFUN(cfg_ss7_msc, cfg_ss7_msc_cmd,
"msc <0-100>",
"MSC Connection\n" "MSC Number\n")
@ -1151,6 +1299,12 @@ void cell_vty_init(void)
install_element(LINK_NODE, &cfg_link_udp_link_index_cmd);
install_element(LINK_NODE, &cfg_link_m2ua_as_cmd);
install_element(LINK_NODE, &cfg_link_m2ua_link_index_cmd);
install_element(LINK_NODE, &cfg_link_m3ua_client_source_ip_cmd);
install_element(LINK_NODE, &cfg_link_m3ua_client_source_port_cmd);
install_element(LINK_NODE, &cfg_link_m3ua_client_dest_ip_cmd);
install_element(LINK_NODE, &cfg_link_m3ua_client_dest_port_cmd);
install_element(LINK_NODE, &cfg_link_m3ua_client_link_index_cmd);
install_element(LINK_NODE, &cfg_link_m3ua_client_routing_ctx_cmd);
install_element(SS7_NODE, &cfg_ss7_msc_cmd);
install_node(&msc_node, config_write_msc);

2
tests/mtp/Makefile.am
View File

@ -1,4 +1,4 @@
AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -Wall
AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include $(LIBOSMOCORE_CFLAGS) -Wall
noinst_PROGRAMS = mtp_parse_test
EXTRA_DIST = mtp_parse_test.ok

10
tests/mtp/mtp_parse_test.c
View File

@ -1,5 +1,5 @@
/* MTP Layer3 parsing tests */
#include <mtp_level3.h>
#include <osmocom/mtp/mtp_level3.h>
#include <arpa/inet.h>
@ -590,14 +590,14 @@ int main(int argc, char **argv)
tests[2].prohib.apoc = MTP_MAKE_APOC(86);
addr = MTP_ADDR(0x00, 0x2AAA, 0x1555);
if (MTP_ADDR_OPC(addr) != 0x1555) {
if (MTP_READ_OPC(addr) != 0x1555) {
fprintf(stderr, "Failed to extract OPC: %d\n",
MTP_ADDR_OPC(addr));
MTP_READ_OPC(addr));
abort();
}
if (MTP_ADDR_DPC(addr) != 0x2AAA) {
if (MTP_READ_DPC(addr) != 0x2AAA) {
fprintf(stderr, "Failed to extract DPC: %d\n",
MTP_ADDR_DPC(addr));
MTP_READ_DPC(addr));
abort();
}