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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
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Preamble
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may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
openair3/SCTP/sctp_common.c
+238
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/*
* Copyright (c) 2015, EURECOM (www.eurecom.fr)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those
* of the authors and should not be interpreted as representing official policies,
* either expressed or implied, of the FreeBSD Project.
*/
/*! \file sctp_common.c
* \brief eNB/MME SCTP related common procedures
* \author Sebastien ROUX
* \date 2013
* \version 1.0
* @ingroup _sctp
*/
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netinet/sctp.h>
#include "sctp_common.h"
/* Pre-bind socket options configuration.
* See http://linux.die.net/man/7/sctp for more informations on these options.
*/
int sctp_set_init_opt(int sd, uint16_t instreams, uint16_t outstreams,
uint16_t max_attempts, uint16_t init_timeout)
{
int on = 1;
struct sctp_initmsg init;
memset((void *)&init, 0, sizeof(struct sctp_initmsg));
/* Request a number of streams */
init.sinit_num_ostreams = outstreams;
init.sinit_max_instreams = instreams;
init.sinit_max_attempts = max_attempts;
init.sinit_max_init_timeo = init_timeout;
if (setsockopt(sd, IPPROTO_SCTP, SCTP_INITMSG, &init, sizeof(struct sctp_initmsg)) < 0) {
SCTP_ERROR("setsockopt: %d:%s\n", errno, strerror(errno));
close(sd);
return -1;
}
/* Allow socket reuse */
if (setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0) {
SCTP_ERROR("setsockopt SO_REUSEADDR failed (%d:%s)\n", errno, strerror(errno));
close(sd);
return -1;
}
return 0;
}
int sctp_get_sockinfo(int sock, uint16_t *instream, uint16_t *outstream,
int32_t *assoc_id)
{
socklen_t i;
struct sctp_status status;
if (socket <= 0) {
return -1;
}
memset(&status, 0, sizeof(struct sctp_status));
i = sizeof(struct sctp_status);
if (getsockopt(sock, IPPROTO_SCTP, SCTP_STATUS, &status, &i) < 0) {
SCTP_ERROR("Getsockopt SCTP_STATUS failed: %s\n", strerror(errno));
return -1;
}
SCTP_DEBUG("----------------------\n");
SCTP_DEBUG("SCTP Status:\n");
SCTP_DEBUG("assoc id .....: %u\n", status.sstat_assoc_id);
SCTP_DEBUG("state ........: %d\n", status.sstat_state);
SCTP_DEBUG("instrms ......: %u\n", status.sstat_instrms);
SCTP_DEBUG("outstrms .....: %u\n", status.sstat_outstrms);
SCTP_DEBUG("fragmentation : %u\n", status.sstat_fragmentation_point);
SCTP_DEBUG("pending data .: %u\n", status.sstat_penddata);
SCTP_DEBUG("unack data ...: %u\n", status.sstat_unackdata);
SCTP_DEBUG("rwnd .........: %u\n", status.sstat_rwnd);
SCTP_DEBUG("peer info :\n");
SCTP_DEBUG(" state ....: %u\n", status.sstat_primary.spinfo_state);
SCTP_DEBUG(" cwnd .....: %u\n", status.sstat_primary.spinfo_cwnd);
SCTP_DEBUG(" srtt .....: %u\n" , status.sstat_primary.spinfo_srtt);
SCTP_DEBUG(" rto ......: %u\n" , status.sstat_primary.spinfo_rto);
SCTP_DEBUG(" mtu ......: %u\n" , status.sstat_primary.spinfo_mtu);
SCTP_DEBUG("----------------------\n");
if (instream != NULL) {
*instream = status.sstat_instrms;
}
if (outstream != NULL) {
*outstream = status.sstat_outstrms;
}
if (assoc_id != NULL) {
*assoc_id = status.sstat_assoc_id;
}
return 0;
}
int sctp_get_peeraddresses(int sock, struct sockaddr **remote_addr, int *nb_remote_addresses)
{
int nb, j;
struct sockaddr *temp_addr_p;
if ((nb = sctp_getpaddrs(sock, -1, &temp_addr_p)) <= 0) {
SCTP_ERROR("Failed to retrieve peer addresses\n");
return -1;
}
SCTP_DEBUG("----------------------\n");
SCTP_DEBUG("Peer addresses:\n");
for (j = 0; j < nb; j++) {
if (temp_addr_p[j].sa_family == AF_INET) {
char address[16];
struct sockaddr_in *addr;
memset(&address, 0, sizeof(address));
addr = (struct sockaddr_in*)&temp_addr_p[j];
if (inet_ntop(AF_INET, &addr->sin_addr, address, sizeof(address)) != NULL) {
SCTP_DEBUG(" - [%s]\n", address);
}
} else {
struct sockaddr_in6 *addr;
char address[40];
addr = (struct sockaddr_in6*)&temp_addr_p[j];
memset(&address, 0, sizeof(address));
if (inet_ntop(AF_INET6, &addr->sin6_addr.s6_addr, address, sizeof(address)) != NULL) {
SCTP_DEBUG(" - [%s]\n", address);
}
}
}
SCTP_DEBUG("----------------------\n");
if (remote_addr != NULL && nb_remote_addresses != NULL) {
*nb_remote_addresses = nb;
*remote_addr = temp_addr_p;
} else {
/* We can destroy buffer */
sctp_freepaddrs((struct sockaddr*)temp_addr_p);
}
return 0;
}
int sctp_get_localaddresses(int sock, struct sockaddr **local_addr, int *nb_local_addresses)
{
int nb, j;
struct sockaddr *temp_addr_p;
if ((nb = sctp_getladdrs(sock, -1, &temp_addr_p)) <= 0) {
SCTP_ERROR("Failed to retrieve local addresses\n");
return -1;
}
SCTP_DEBUG("----------------------\n");
SCTP_DEBUG("Local addresses:\n");
for (j = 0; j < nb; j++) {
if (temp_addr_p[j].sa_family == AF_INET) {
char address[16];
struct sockaddr_in *addr;
memset(address, 0, sizeof(address));
addr = (struct sockaddr_in*)&temp_addr_p[j];
if (inet_ntop(AF_INET, &addr->sin_addr, address, sizeof(address)) != NULL) {
SCTP_DEBUG(" - [%s]\n", address);
}
} else {
struct sockaddr_in6 *addr;
char address[40];
addr = (struct sockaddr_in6*)&temp_addr_p[j];
memset(address, 0, sizeof(address));
if (inet_ntop(AF_INET6, &addr->sin6_addr.s6_addr, address, sizeof(address)) != NULL) {
SCTP_DEBUG(" - [%s]\n", address);
}
}
}
SCTP_DEBUG("----------------------\n");
if (local_addr != NULL && nb_local_addresses != NULL) {
*nb_local_addresses = nb;
*local_addr = temp_addr_p;
} else {
/* We can destroy buffer */
sctp_freeladdrs((struct sockaddr*)temp_addr_p);
}
return 0;
}
openair3/SCTP/sctp_common.h
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/*
* Copyright (c) 2015, EURECOM (www.eurecom.fr)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those
* of the authors and should not be interpreted as representing official policies,
* either expressed or implied, of the FreeBSD Project.
*/
/*! \file sctp_common.h
* \brief eNB/MME SCTP related common procedures
* \author Sebastien ROUX
* \date 2013
* \version 1.0
* @ingroup _sctp
*/
#ifndef SCTP_COMMON_H_
#define SCTP_COMMON_H_
#include <stdio.h>
#include <stdint.h>
#include <sys/socket.h>
#if defined(ENB_MODE)
# include "UTIL/LOG/log.h"
# define SCTP_ERROR(x, args...) LOG_E(SCTP, x, ##args)
# define SCTP_WARN(x, args...) LOG_W(SCTP, x, ##args)
# define SCTP_DEBUG(x, args...) LOG_I(SCTP, x, ##args)
#else
# define SCTP_ERROR(x, args...) do { fprintf(stderr, "[SCTP][E]"x, ##args); } while(0)
# define SCTP_DEBUG(x, args...) do { fprintf(stdout, "[SCTP][D]"x, ##args); } while(0)
# define SCTP_WARN(x, args...) do { fprintf(stdout, "[SCTP][W]"x, ##args); } while(0)
#endif
int sctp_set_init_opt(int sd, uint16_t instreams, uint16_t outstreams,
uint16_t max_attempts, uint16_t init_timeout);
int sctp_get_sockinfo(int sock, uint16_t *instream, uint16_t *outstream,
int32_t *assoc_id);
int sctp_get_peeraddresses(int sock, struct sockaddr **remote_addr,
int *nb_remote_addresses);
int sctp_get_localaddresses(int sock, struct sockaddr **local_addr,
int *nb_local_addresses);
#endif /* SCTP_COMMON_H_ */
openair3/SCTP/sctp_default_values.h
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/*
* Copyright (c) 2015, EURECOM (www.eurecom.fr)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those
* of the authors and should not be interpreted as representing official policies,
* either expressed or implied, of the FreeBSD Project.
*/
#ifndef SCTP_DEFAULT_VALUES_H_
#define SCTP_DEFAULT_VALUES_H_
#define SCTP_OUT_STREAMS (16)
#define SCTP_IN_STREAMS (16)
#define SCTP_MAX_ATTEMPTS (2)
#define SCTP_TIMEOUT (5)
#define SCTP_RECV_BUFFER_SIZE (1024)
#endif /* SCTP_DEFAULT_VALUES_H_ */
openair3/SCTP/sctp_eNB_defs.h
+94
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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#include "queue.h"
#ifndef SCTP_ENB_DEFS_H_
#define SCTP_ENB_DEFS_H_
typedef struct sctp_queue_item_s {
/* Pair of stream on which we received this packet */
uint16_t local_stream;
/* Remote port */
uint16_t remote_port;
/* Remote address */
uint32_t remote_addr;
uint32_t assoc_id;
/* PPID used for the packet */
uint32_t ppid;
/* Buffer and buffer length for the packet */
uint32_t length;
uint8_t *buffer;
/* queue.h internal data */
TAILQ_ENTRY(sctp_queue_item_s) entry;
} sctp_queue_item_t;
typedef struct {
/* Socket descriptor used to send/recv data on SCTP */
int sd;
/* Unique SCTP association ID (Local to host), used to distinguish
* associations between MME and eNB.
*/
int32_t assoc_id;
/* Current remote port used for transmission */
uint16_t remote_port;
/* Remote IP addresses */
struct sockaddr *remote_ip_addresses;
int nb_remote_addresses;
/* Local port to use for transmission (dynamically allocated) */
uint16_t local_port;
/* Local IP address to use for transmission */
struct sockaddr *local_ip_addr;
int nb_local_addresses;
/* Number of input/output streams used over this association.
* The number is negotiated between peers at connect and the minimum value
* of both peers is used over the association.
*/
uint16_t instreams;
uint16_t outstreams;
/* Queue of messages received on SCTP. Messages will be processed later by
* upper layer. This will allow data prioritization and data de-fragmentation
* (if any on interface).
*/
TAILQ_HEAD(sctp_queue_s, sctp_queue_item_s) sctp_queue;
/* Queue size in bytes (may be used to limit eNB processing) */
uint32_t queue_size;
/* Number of items in the queue */
uint32_t queue_length;
} sctp_data_t;
#endif /* SCTP_ENB_DEFS_H_ */
openair3/SCTP/sctp_eNB_itti_messaging.c
+94
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@@ -0,0 +1,94 @@
/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#include "intertask_interface.h"
#include "sctp_common.h"
#include "sctp_eNB_itti_messaging.h"
int sctp_itti_send_new_message_ind(task_id_t task_id, uint32_t assoc_id, uint8_t *buffer,
uint32_t buffer_length, uint16_t stream)
{
MessageDef *message_p;
sctp_data_ind_t *sctp_data_ind_p;
message_p = itti_alloc_new_message(TASK_SCTP, SCTP_DATA_IND);
sctp_data_ind_p = &message_p->ittiMsg.sctp_data_ind;
sctp_data_ind_p->buffer = itti_malloc(TASK_SCTP, task_id, sizeof(uint8_t) * buffer_length);
/* Copy the buffer */
memcpy((void *)sctp_data_ind_p->buffer, (void *)buffer, buffer_length);
sctp_data_ind_p->stream = stream;
sctp_data_ind_p->buffer_length = buffer_length;
sctp_data_ind_p->assoc_id = assoc_id;
return itti_send_msg_to_task(task_id, INSTANCE_DEFAULT, message_p);
}
int sctp_itti_send_association_resp(task_id_t task_id, instance_t instance,
int32_t assoc_id,
uint16_t cnx_id, enum sctp_state_e state,
uint16_t out_streams, uint16_t in_streams)
{
MessageDef *message_p;
sctp_new_association_resp_t *sctp_new_association_resp_p;
message_p = itti_alloc_new_message(TASK_SCTP, SCTP_NEW_ASSOCIATION_RESP);
sctp_new_association_resp_p = &message_p->ittiMsg.sctp_new_association_resp;
sctp_new_association_resp_p->in_streams = in_streams;
sctp_new_association_resp_p->out_streams = out_streams;
sctp_new_association_resp_p->sctp_state = state;
sctp_new_association_resp_p->assoc_id = assoc_id;
sctp_new_association_resp_p->ulp_cnx_id = cnx_id;
return itti_send_msg_to_task(task_id, instance, message_p);
}
int sctp_itti_send_association_ind(task_id_t task_id, instance_t instance,
int32_t assoc_id, uint16_t port,
uint16_t out_streams, uint16_t in_streams)
{
MessageDef *message_p;
sctp_new_association_ind_t *sctp_new_association_ind_p;
message_p = itti_alloc_new_message(TASK_SCTP, SCTP_NEW_ASSOCIATION_IND);
sctp_new_association_ind_p = &message_p->ittiMsg.sctp_new_association_ind;
sctp_new_association_ind_p->assoc_id = assoc_id;
sctp_new_association_ind_p->port = port;
sctp_new_association_ind_p->out_streams = out_streams;
sctp_new_association_ind_p->in_streams = in_streams;
return itti_send_msg_to_task(task_id, instance, message_p);
}
openair3/SCTP/sctp_eNB_itti_messaging.h
+45
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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#ifndef SCTP_ITTI_MESSAGING_H_
#define SCTP_ITTI_MESSAGING_H_
int sctp_itti_send_new_message_ind(task_id_t task_id, uint32_t assoc_id, uint8_t *buffer,
uint32_t buffer_length, uint16_t stream);
int sctp_itti_send_association_resp(task_id_t task_id, instance_t instance,
int32_t assoc_id,
uint16_t cnx_id, enum sctp_state_e state,
uint16_t out_streams, uint16_t in_streams);
int sctp_itti_send_association_ind(task_id_t task_id, instance_t instance,
int32_t assoc_id, uint16_t port,
uint16_t out_streams, uint16_t in_streams);
#endif /* SCTP_ITTI_MESSAGING_H_ */
openair3/SCTP/sctp_eNB_task.c
+877
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@@ -0,0 +1,877 @@
/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#include <pthread.h>
#include <stdint.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <ifaddrs.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/sctp.h>
#include <arpa/inet.h>
#include "assertions.h"
#include "queue.h"
#include "intertask_interface.h"
#include "sctp_default_values.h"
#include "sctp_common.h"
#include "sctp_eNB_itti_messaging.h"
#include "msc.h"
/* Used to format an uint32_t containing an ipv4 address */
#define IPV4_ADDR "%u.%u.%u.%u"
#define IPV4_ADDR_FORMAT(aDDRESS) \
(uint8_t)((aDDRESS) & 0x000000ff), \
(uint8_t)(((aDDRESS) & 0x0000ff00) >> 8 ), \
(uint8_t)(((aDDRESS) & 0x00ff0000) >> 16), \
(uint8_t)(((aDDRESS) & 0xff000000) >> 24)
enum sctp_connection_type_e {
SCTP_TYPE_CLIENT,
SCTP_TYPE_SERVER,
SCTP_TYPE_MAX
};
typedef struct sctp_cnx_list_elm_s {
STAILQ_ENTRY(sctp_cnx_list_elm_s) entries;
/* Type of this association
*/
enum sctp_connection_type_e connection_type;
int sd; ///< Socket descriptor of connection */
uint16_t local_port;
uint16_t in_streams; ///< Number of input streams negociated for this connection
uint16_t out_streams; ///< Number of output streams negotiated for this connection
uint16_t ppid; ///< Payload protocol Identifier
int32_t assoc_id; ///< SCTP association id for the connection (note4debug host byte order)
uint32_t messages_recv; ///< Number of messages received on this connection
uint32_t messages_sent; ///< Number of messages sent on this connection
task_id_t task_id; ///< Task id of the task who asked for this connection
instance_t instance; ///< Instance
uint16_t cnx_id; ///< Upper layer identifier
struct sockaddr *peer_addresses;///< A list of peer addresses for server socket
int nb_peer_addresses; ///< For server socket
} sctp_cnx_list_elm_t;
static STAILQ_HEAD(sctp_cnx_list_head, sctp_cnx_list_elm_s) sctp_cnx_list;
static uint16_t sctp_nb_cnx = 0;
struct sctp_cnx_list_elm_s *sctp_get_cnx(int32_t assoc_id, int sd)
{
struct sctp_cnx_list_elm_s *elm;
STAILQ_FOREACH(elm, &sctp_cnx_list, entries) {
if (assoc_id != -1) {
if (elm->assoc_id == assoc_id) {
return elm;
}
} else {
if (elm->sd == sd) {
return elm;
}
}
}
return NULL;
}
void
sctp_handle_new_association_req(
const instance_t instance,
const task_id_t requestor,
const sctp_new_association_req_t * const sctp_new_association_req_p)
{
int sd = 0;
int32_t assoc_id = 0;
struct sctp_event_subscribe events;
struct sctp_cnx_list_elm_s *sctp_cnx = NULL;
enum sctp_connection_type_e connection_type = SCTP_TYPE_CLIENT;
struct ifreq ifr;
struct ifaddrs *ifaddr = NULL;
struct ifaddrs *ifa = NULL;
int family = 0;
int s = 0;
struct in_addr in;
struct in6_addr in6;
/* Prepare a new SCTP association as requested by upper layer and try to connect
* to remote host.
*/
DevAssert(sctp_new_association_req_p != NULL);
/* Create new socket with IPv6 affinity */
#warning "SCTP may Force IPv4 only, here"
#ifdef NO_VIRTUAL_MACHINE
// in init chunk appears a list of host addresses, IPv4 and IPv4 in an arbitrary (unsorted) order
// SCTP hearbeats starts with first ipv4 addresses then stop triyng with other ipv4 addresses
// if it encounters an IPv6 address in list, so we can force the building of IPv4 addresses only
// with AF_INET (the working IPv4 address can be the last in the list...)
if ((sd = socket(AF_INET6, SOCK_STREAM, IPPROTO_SCTP)) < 0) {
#else
if ((sd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP)) < 0) {
#endif
SCTP_ERROR("Socket creation failed: %s\n", strerror(errno));
return;
}
/* Add the socket to list of fd monitored by ITTI */
itti_subscribe_event_fd(TASK_SCTP, sd);
if (sctp_set_init_opt(sd,
sctp_new_association_req_p->in_streams,
sctp_new_association_req_p->out_streams,
SCTP_MAX_ATTEMPTS, SCTP_TIMEOUT) != 0) {
SCTP_ERROR("Setsockopt IPPROTO_SCTP_INITMSG failed: %s\n",
strerror(errno));
itti_unsubscribe_event_fd(TASK_SCTP, sd);
close(sd);
return;
}
/* Subscribe to all events */
memset((void *)&events, 1, sizeof(struct sctp_event_subscribe));
if (setsockopt(sd, IPPROTO_SCTP, SCTP_EVENTS, &events,
sizeof(struct sctp_event_subscribe)) < 0) {
SCTP_ERROR("Setsockopt IPPROTO_SCTP_EVENTS failed: %s\n",
strerror(errno));
close(sd);
return;
}
// Bind to device ... or we could bind to address also
if (getifaddrs(&ifaddr) == -1) {
SCTP_ERROR("getifaddrs failed: %s\n", strerror(errno));
close(sd);
}
/* Walk through linked list, maintaining head pointer so we
can free list later */
for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
if (ifa->ifa_addr == NULL)
continue;
family = ifa->ifa_addr->sa_family;
/* For an AF_INET* interface address, display the address */
if (sctp_new_association_req_p->local_address.ipv4 && family == AF_INET) {
// compare address
s = inet_aton(sctp_new_association_req_p->local_address.ipv4_address,
&in);
if (s > 0 ) {
if (((struct sockaddr_in*)ifa->ifa_addr)->sin_addr.s_addr == in.s_addr) {
#if 0
memset(&ifr, 0, sizeof(ifr));
snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s",ifa->ifa_name);
if (setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr)) < 0) {
SCTP_ERROR("Setsockopt SOL_SOCKET failed: %s\n",
strerror(errno));
} else {
SCTP_DEBUG("Setsockopt SOL_SOCKET socket bound to : %s\n",
ifa->ifa_name);
}
#else
struct sockaddr_in locaddr;
locaddr.sin_family = AF_INET;
locaddr.sin_port = htons(sctp_new_association_req_p->port);
locaddr.sin_addr.s_addr = in.s_addr;
if (sctp_bindx(sd, (struct sockaddr*)&locaddr, 1, SCTP_BINDX_ADD_ADDR) < 0) {
SCTP_ERROR("sctp_bindx SCTP_BINDX_ADD_ADDR failed: %s\n",
strerror(errno));
} else {
SCTP_DEBUG("sctp_bindx SCTP_BINDX_ADD_ADDR socket bound to : %s\n",
inet_ntoa(locaddr.sin_addr));
}
#endif
break;
}
}
} else if (sctp_new_association_req_p->local_address.ipv6 && family == AF_INET6) {
// compare address
s = inet_pton(AF_INET6,
sctp_new_association_req_p->local_address.ipv6_address,
&in6);
if (s == 1 ) {
if (memcmp(&((struct sockaddr_in6*)ifa->ifa_addr)->sin6_addr,
&in6, sizeof(in6)) == 0) {
memset(&ifr, 0, sizeof(ifr));
snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s", ifa->ifa_name);
if (setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr)) < 0) {
SCTP_ERROR("Setsockopt SOL_SOCKET failed: %s\n",
strerror(errno));
} else {
SCTP_DEBUG("Setsockopt SOL_SOCKET socket bound to : %s\n",
ifa->ifa_name);
}
break;
}
}
}
}
freeifaddrs(ifaddr);
/* Mark the socket as non-blocking */
if (fcntl(sd, F_SETFL, O_NONBLOCK) < 0) {
SCTP_ERROR("fcntl F_SETFL O_NONBLOCK failed: %s\n",
strerror(errno));
close(sd);
return;
}
/* SOCK_STREAM socket type requires an explicit connect to the remote host
* address and port.
* Only use IPv4 for the first connection attempt
*/
if ((sctp_new_association_req_p->remote_address.ipv6 != 0) ||
(sctp_new_association_req_p->remote_address.ipv4 != 0)) {
uint8_t address_index = 0;
uint8_t used_address = sctp_new_association_req_p->remote_address.ipv6 +
sctp_new_association_req_p->remote_address.ipv4;
struct sockaddr_in addr[used_address];
memset(addr, 0, used_address * sizeof(struct sockaddr_in));
if (sctp_new_association_req_p->remote_address.ipv6 == 1) {
if (inet_pton(AF_INET6, sctp_new_association_req_p->remote_address.ipv6_address,
&addr[address_index].sin_addr.s_addr) != 1) {
SCTP_ERROR("Failed to convert ipv6 address %*s to network type\n",
(int)strlen(sctp_new_association_req_p->remote_address.ipv6_address),
sctp_new_association_req_p->remote_address.ipv6_address);
close(sd);
return;
}
SCTP_DEBUG("Converted ipv6 address %*s to network type\n",
(int)strlen(sctp_new_association_req_p->remote_address.ipv6_address),
sctp_new_association_req_p->remote_address.ipv6_address);
addr[address_index].sin_family = AF_INET6;
addr[address_index].sin_port = htons(sctp_new_association_req_p->port);
address_index++;
}
if (sctp_new_association_req_p->remote_address.ipv4 == 1) {
if (inet_pton(AF_INET, sctp_new_association_req_p->remote_address.ipv4_address,
&addr[address_index].sin_addr.s_addr) != 1) {
SCTP_ERROR("Failed to convert ipv4 address %*s to network type\n",
(int)strlen(sctp_new_association_req_p->remote_address.ipv4_address),
sctp_new_association_req_p->remote_address.ipv4_address);
close(sd);
return;
}
SCTP_DEBUG("Converted ipv4 address %*s to network type\n",
(int)strlen(sctp_new_association_req_p->remote_address.ipv4_address),
sctp_new_association_req_p->remote_address.ipv4_address);
addr[address_index].sin_family = AF_INET;
addr[address_index].sin_port = htons(sctp_new_association_req_p->port);
address_index++;
}
/* Connect to remote host and port */
if (sctp_connectx(sd, (struct sockaddr *)addr, 1, &assoc_id) < 0) {
/* sctp_connectx on non-blocking socket return EINPROGRESS */
if (errno != EINPROGRESS) {
SCTP_ERROR("Connect failed: %s\n", strerror(errno));
sctp_itti_send_association_resp(
requestor, instance, -1, sctp_new_association_req_p->ulp_cnx_id,
SCTP_STATE_UNREACHABLE, 0, 0);
/* Add the socket to list of fd monitored by ITTI */
itti_unsubscribe_event_fd(TASK_SCTP, sd);
close(sd);
return;
} else {
SCTP_DEBUG("connectx assoc_id %d in progress..., used %d addresses\n",
assoc_id, used_address);
}
} else {
SCTP_DEBUG("sctp_connectx SUCCESS, used %d addresses assoc_id %d\n",
used_address,
assoc_id);
}
} else {
/* No remote address provided -> only bind the socket for now.
* Connection will be accepted in the main event loop
*/
struct sockaddr_in6 addr6;
connection_type = SCTP_TYPE_SERVER;
/* For now bind to any interface */
addr6.sin6_family = AF_INET6;
addr6.sin6_addr = in6addr_any;
addr6.sin6_port = htons(sctp_new_association_req_p->port);
if (bind(sd, (struct sockaddr*)&addr6, sizeof(addr6)) < 0) {
SCTP_ERROR("Failed to bind the socket to address any (v4/v6): %s\n",
strerror(errno));
close(sd);
return;
}
}
sctp_cnx = calloc(1, sizeof(*sctp_cnx));
sctp_cnx->connection_type = connection_type;
sctp_cnx->sd = sd;
sctp_cnx->task_id = requestor;
sctp_cnx->cnx_id = sctp_new_association_req_p->ulp_cnx_id;
sctp_cnx->ppid = sctp_new_association_req_p->ppid;
sctp_cnx->instance = instance;
sctp_cnx->assoc_id = assoc_id;
/* Insert new element at end of list */
STAILQ_INSERT_TAIL(&sctp_cnx_list, sctp_cnx, entries);
sctp_nb_cnx++;
SCTP_DEBUG("Inserted new descriptor for sd %d in list, nb elements %u, assoc_id %d\n",
sd, sctp_nb_cnx, assoc_id);
}
void sctp_send_data(
instance_t instance,
task_id_t task_id,
sctp_data_req_t *sctp_data_req_p)
{
struct sctp_cnx_list_elm_s *sctp_cnx = NULL;
DevAssert(sctp_data_req_p != NULL);
DevAssert(sctp_data_req_p->buffer != NULL);
DevAssert(sctp_data_req_p->buffer_length > 0);
sctp_cnx = sctp_get_cnx(sctp_data_req_p->assoc_id, 0);
if (sctp_cnx == NULL) {
SCTP_ERROR("Failed to find SCTP description for assoc_id %d\n",
sctp_data_req_p->assoc_id);
/* TODO: notify upper layer */
return;
}
if (sctp_data_req_p->stream >= sctp_cnx->out_streams) {
SCTP_ERROR("Requested stream (%"PRIu16") >= nb out streams (%"PRIu16")\n",
sctp_data_req_p->stream, sctp_cnx->out_streams);
return;
}
/* Send message on specified stream of the sd association
* NOTE: PPID should be defined in network order
*/
if (sctp_sendmsg(sctp_cnx->sd, sctp_data_req_p->buffer,
sctp_data_req_p->buffer_length, NULL, 0,
htonl(sctp_cnx->ppid), 0, sctp_data_req_p->stream, 0, 0) < 0) {
SCTP_ERROR("Sctp_sendmsg failed: %s\n", strerror(errno));
/* TODO: notify upper layer */
return;
}
SCTP_DEBUG("Successfully sent %u bytes on stream %d for assoc_id %u\n",
sctp_data_req_p->buffer_length, sctp_data_req_p->stream,
sctp_cnx->assoc_id);
}
static int sctp_close_association(
const instance_t instance,
const task_id_t requestor,
sctp_close_association_t *close_association_p)
{
struct sctp_cnx_list_elm_s *sctp_cnx = NULL;
DevAssert(close_association_p != NULL);
sctp_cnx = sctp_get_cnx(close_association_p->assoc_id, 0);
if (sctp_cnx == NULL) {
SCTP_ERROR("Failed to find SCTP description for assoc_id %d\n",
close_association_p->assoc_id);
/* TODO: notify upper layer */
return -1;
} else {
close(sctp_cnx->sd);
STAILQ_REMOVE(&sctp_cnx_list, sctp_cnx, sctp_cnx_list_elm_s, entries);
SCTP_DEBUG("Removed assoc_id %u (closed socket %u)\n",
sctp_cnx->assoc_id, sctp_cnx->sd);
}
return 0;
}
static int sctp_create_new_listener(
const instance_t instance,
const task_id_t requestor,
sctp_init_t *init_p)
{
struct sctp_event_subscribe event;
struct sockaddr *addr = NULL;
struct sctp_cnx_list_elm_s *sctp_cnx = NULL;
uint16_t i = 0, j = 0;
int sd = 0;
int used_addresses = 0;
DevAssert(init_p != NULL);
if (init_p->ipv4 == 0 && init_p->ipv6 == 0) {
SCTP_ERROR("Illegal IP configuration upper layer should request at"
"least ipv4 and/or ipv6 config\n");
return -1;
}
if ((used_addresses = init_p->nb_ipv4_addr + init_p->nb_ipv6_addr) == 0) {
SCTP_WARN("No address provided...\n");
return -1;
}
addr = calloc(used_addresses, sizeof(struct sockaddr));
SCTP_DEBUG("Creating new listen socket on port %u with\n", init_p->port);
if (init_p->ipv4 == 1) {
struct sockaddr_in *ip4_addr;
SCTP_DEBUG("ipv4 addresses:\n");
for (i = 0; i < init_p->nb_ipv4_addr; i++) {
SCTP_DEBUG("\t- "IPV4_ADDR"\n",
IPV4_ADDR_FORMAT(init_p->ipv4_address[i]));
ip4_addr = (struct sockaddr_in *)&addr[i];
ip4_addr->sin_family = AF_INET;
ip4_addr->sin_port = htons(init_p->port);
ip4_addr->sin_addr.s_addr = init_p->ipv4_address[i];
}
}
if (init_p->ipv6 == 1) {
struct sockaddr_in6 *ip6_addr;
SCTP_DEBUG("ipv6 addresses:\n");
for (j = 0; j < init_p->nb_ipv6_addr; j++) {
SCTP_DEBUG("\t- %s\n", init_p->ipv6_address[j]);
ip6_addr = (struct sockaddr_in6 *)&addr[i + j];
ip6_addr->sin6_family = AF_INET6;
ip6_addr->sin6_port = htons(init_p->port);
if (inet_pton(AF_INET6, init_p->ipv6_address[j],
ip6_addr->sin6_addr.s6_addr) <= 0) {
SCTP_WARN("Provided ipv6 address %s is not valid\n",
init_p->ipv6_address[j]);
}
}
}
if ((sd = socket(AF_INET6, SOCK_STREAM, IPPROTO_SCTP)) < 0) {
SCTP_ERROR("socket: %s:%d\n", strerror(errno), errno);
return -1;
}
memset((void *)&event, 1, sizeof(struct sctp_event_subscribe));
if (setsockopt(sd, IPPROTO_SCTP, SCTP_EVENTS, &event,
sizeof(struct sctp_event_subscribe)) < 0) {
SCTP_ERROR("setsockopt: %s:%d\n", strerror(errno), errno);
return -1;
}
sctp_cnx = calloc(1, sizeof(*sctp_cnx));
sctp_cnx->connection_type = SCTP_TYPE_SERVER;
sctp_cnx->sd = sd;
sctp_cnx->local_port = init_p->port;
sctp_cnx->in_streams = 32;
sctp_cnx->out_streams = 32;
sctp_cnx->ppid = init_p->ppid;
sctp_cnx->task_id = requestor;
sctp_cnx->instance = instance;
/* Some pre-bind socket configuration */
if (sctp_set_init_opt(sd,
sctp_cnx->in_streams,
sctp_cnx->out_streams,
0,
0) < 0) {
goto err;
}
if (sctp_bindx(sd, addr, used_addresses, SCTP_BINDX_ADD_ADDR) != 0) {
SCTP_ERROR("sctp_bindx: %s:%d\n", strerror(errno), errno);
return -1;
}
if (listen(sd, 5) < 0) {
SCTP_ERROR("listen: %s:%d\n", strerror(errno), errno);
return -1;
}
/* Insert new element at end of list */
STAILQ_INSERT_TAIL(&sctp_cnx_list, sctp_cnx, entries);
sctp_nb_cnx++;
/* Add the socket to list of fd monitored by ITTI */
itti_subscribe_event_fd(TASK_SCTP, sd);
return sd;
err:
if (sd != -1) {
close(sd);
sd = -1;
}
return -1;
}
static inline
void
sctp_eNB_accept_associations(
struct sctp_cnx_list_elm_s *sctp_cnx)
{
int client_sd;
struct sockaddr saddr;
socklen_t saddr_size;
DevAssert(sctp_cnx != NULL);
saddr_size = sizeof(saddr);
/* There is a new client connecting. Accept it...
*/
if ((client_sd = accept(sctp_cnx->sd, &saddr, &saddr_size)) < 0) {
SCTP_ERROR("[%d] accept failed: %s:%d\n", sctp_cnx->sd, strerror(errno), errno);
} else {
struct sctp_cnx_list_elm_s *new_cnx;
uint16_t port;
/* This is an ipv6 socket */
port = ((struct sockaddr_in6*)&saddr)->sin6_port;
/* Contrary to BSD, client socket does not inherit O_NONBLOCK option */
if (fcntl(client_sd, F_SETFL, O_NONBLOCK) < 0) {
SCTP_ERROR("fcntl F_SETFL O_NONBLOCK failed: %s\n",
strerror(errno));
close(client_sd);
return;
}
new_cnx = calloc(1, sizeof(*sctp_cnx));
DevAssert(new_cnx != NULL);
new_cnx->connection_type = SCTP_TYPE_CLIENT;
new_cnx->sd = client_sd;
new_cnx->task_id = sctp_cnx->task_id;
new_cnx->cnx_id = 0;
new_cnx->ppid = sctp_cnx->ppid;
new_cnx->instance = sctp_cnx->instance;
new_cnx->local_port = sctp_cnx->local_port;
if (sctp_get_sockinfo(client_sd, &new_cnx->in_streams, &new_cnx->out_streams,
&new_cnx->assoc_id) != 0) {
SCTP_ERROR("sctp_get_sockinfo failed\n");
close(client_sd);
free(new_cnx);
return;
}
/* Insert new element at end of list */
STAILQ_INSERT_TAIL(&sctp_cnx_list, new_cnx, entries);
sctp_nb_cnx++;
/* Add the socket to list of fd monitored by ITTI */
itti_subscribe_event_fd(TASK_SCTP, client_sd);
sctp_itti_send_association_ind(new_cnx->task_id, new_cnx->instance,
new_cnx->assoc_id, port,
new_cnx->out_streams, new_cnx->in_streams);
}
}
static inline
void
sctp_eNB_read_from_socket(
struct sctp_cnx_list_elm_s *sctp_cnx)
{
int flags = 0, n;
socklen_t from_len;
struct sctp_sndrcvinfo sinfo;
struct sockaddr_in addr;
uint8_t buffer[SCTP_RECV_BUFFER_SIZE];
DevAssert(sctp_cnx != NULL);
memset((void *)&addr, 0, sizeof(struct sockaddr_in));
from_len = (socklen_t)sizeof(struct sockaddr_in);
memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
n = sctp_recvmsg(sctp_cnx->sd, (void *)buffer, SCTP_RECV_BUFFER_SIZE,
(struct sockaddr *)&addr, &from_len,
&sinfo, &flags);
if (n < 0) {
if (errno == ENOTCONN) {
itti_unsubscribe_event_fd(TASK_SCTP, sctp_cnx->sd);
SCTP_DEBUG("Received not connected for sd %d\n", sctp_cnx->sd);
sctp_itti_send_association_resp(
sctp_cnx->task_id, sctp_cnx->instance, -1,
sctp_cnx->cnx_id, SCTP_STATE_UNREACHABLE, 0, 0);
close(sctp_cnx->sd);
STAILQ_REMOVE(&sctp_cnx_list, sctp_cnx, sctp_cnx_list_elm_s, entries);
sctp_nb_cnx--;
free(sctp_cnx);
} else {
SCTP_DEBUG("An error occured during read\n");
SCTP_ERROR("sctp_recvmsg (fd %d, len %d ): %s:%d\n", sctp_cnx->sd, n, strerror(errno), errno);
}
return;
} else if (n == 0) {
SCTP_DEBUG("return of sctp_recvmsg is 0...\n");
return;
}
if (flags & MSG_NOTIFICATION) {
union sctp_notification *snp;
snp = (union sctp_notification *)buffer;
SCTP_DEBUG("Received notification for sd %d, type %u\n",
sctp_cnx->sd, snp->sn_header.sn_type);
/* Client deconnection */
if (SCTP_SHUTDOWN_EVENT == snp->sn_header.sn_type) {
itti_unsubscribe_event_fd(TASK_SCTP, sctp_cnx->sd);
close(sctp_cnx->sd);
sctp_itti_send_association_resp(
sctp_cnx->task_id, sctp_cnx->instance, sctp_cnx->assoc_id,
sctp_cnx->cnx_id, SCTP_STATE_SHUTDOWN,
0, 0);
STAILQ_REMOVE(&sctp_cnx_list, sctp_cnx, sctp_cnx_list_elm_s, entries);
sctp_nb_cnx--;
free(sctp_cnx);
}
/* Association has changed. */
else if (SCTP_ASSOC_CHANGE == snp->sn_header.sn_type) {
struct sctp_assoc_change *sctp_assoc_changed;
sctp_assoc_changed = &snp->sn_assoc_change;
SCTP_DEBUG("Client association changed: %d\n", sctp_assoc_changed->sac_state);
/* New physical association requested by a peer */
switch (sctp_assoc_changed->sac_state) {
case SCTP_COMM_UP: {
if (sctp_get_peeraddresses(sctp_cnx->sd, NULL, NULL) != 0) {
/* TODO Failure -> notify upper layer */
} else {
sctp_get_sockinfo(sctp_cnx->sd, &sctp_cnx->in_streams,
&sctp_cnx->out_streams, &sctp_cnx->assoc_id);
}
SCTP_DEBUG("Comm up notified for sd %d, assigned assoc_id %d\n",
sctp_cnx->sd, sctp_cnx->assoc_id);
sctp_itti_send_association_resp(
sctp_cnx->task_id, sctp_cnx->instance, sctp_cnx->assoc_id,
sctp_cnx->cnx_id, SCTP_STATE_ESTABLISHED,
sctp_cnx->out_streams, sctp_cnx->in_streams);
}
break;
default:
break;
}
}
} else {
sctp_cnx->messages_recv++;
if (ntohl(sinfo.sinfo_ppid) != sctp_cnx->ppid) {
/* Mismatch in Payload Protocol Identifier,
* may be we received unsollicited traffic from stack other than S1AP.
*/
SCTP_ERROR("Received data from peer with unsollicited PPID %d, expecting %d\n",
ntohl(sinfo.sinfo_ppid),
sctp_cnx->ppid);
}
SCTP_DEBUG("[%d][%d] Msg of length %d received from port %u, on stream %d, PPID %d\n",
sinfo.sinfo_assoc_id, sctp_cnx->sd, n, ntohs(addr.sin_port),
sinfo.sinfo_stream, ntohl(sinfo.sinfo_ppid));
sctp_itti_send_new_message_ind(sctp_cnx->task_id,
sinfo.sinfo_assoc_id,
buffer, n, sinfo.sinfo_stream);
}
}
void
sctp_eNB_flush_sockets(
struct epoll_event *events, int nb_events)
{
int i;
struct sctp_cnx_list_elm_s *sctp_cnx = NULL;
if (events == NULL) {
return;
}
for (i = 0; i < nb_events; i++) {
sctp_cnx = sctp_get_cnx(-1, events[i].data.fd);
if (sctp_cnx == NULL) {
continue;
}
SCTP_DEBUG("Found data for descriptor %d\n", events[i].data.fd);
if (sctp_cnx->connection_type == SCTP_TYPE_CLIENT) {
sctp_eNB_read_from_socket(sctp_cnx);
} else {
sctp_eNB_accept_associations(sctp_cnx);
}
}
}
void *sctp_eNB_task(void *arg)
{
int nb_events;
struct epoll_event *events;
MessageDef *received_msg = NULL;
int result;
SCTP_DEBUG("Starting SCTP layer\n");
STAILQ_INIT(&sctp_cnx_list);
itti_mark_task_ready(TASK_SCTP);
MSC_START_USE();
while (1) {
itti_receive_msg(TASK_SCTP, &received_msg);
/* Check if there is a packet to handle */
if (received_msg != NULL) {
switch (ITTI_MSG_ID(received_msg)) {
case SCTP_INIT_MSG: {
SCTP_DEBUG("Received SCTP_INIT_MSG\n");
/* We received a new connection request */
if (sctp_create_new_listener(
ITTI_MESSAGE_GET_INSTANCE(received_msg),
ITTI_MSG_ORIGIN_ID(received_msg),
&received_msg->ittiMsg.sctp_init) < 0) {
/* SCTP socket creation or bind failed... */
SCTP_ERROR("Failed to create new SCTP listener\n");
}
}
break;
case SCTP_CLOSE_ASSOCIATION:
sctp_close_association(ITTI_MESSAGE_GET_INSTANCE(received_msg),
ITTI_MSG_ORIGIN_ID(received_msg),
&received_msg->ittiMsg.sctp_close_association);
break;
case TERMINATE_MESSAGE:
itti_exit_task();
break;
case SCTP_NEW_ASSOCIATION_REQ: {
sctp_handle_new_association_req(ITTI_MESSAGE_GET_INSTANCE(received_msg),
ITTI_MSG_ORIGIN_ID(received_msg),
&received_msg->ittiMsg.sctp_new_association_req);
}
break;
case SCTP_DATA_REQ: {
sctp_send_data(ITTI_MESSAGE_GET_INSTANCE(received_msg),
ITTI_MSG_ORIGIN_ID(received_msg),
&received_msg->ittiMsg.sctp_data_req);
}
break;
default:
SCTP_ERROR("Received unhandled message %d:%s\n",
ITTI_MSG_ID(received_msg), ITTI_MSG_NAME(received_msg));
break;
}
result = itti_free(ITTI_MSG_ORIGIN_ID(received_msg), received_msg);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
received_msg = NULL;
}
nb_events = itti_get_events(TASK_SCTP, &events);
/* Now handle notifications for other sockets */
sctp_eNB_flush_sockets(events, nb_events);
}
return NULL;
}
openair3/SCTP/sctp_eNB_task.h
+35
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@@ -0,0 +1,35 @@
/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#ifndef SCTP_ENB_TASK_H_
#define SCTP_ENB_TASK_H_
void *sctp_eNB_task(void *arg);
#endif /* SCTP_ENB_TASK_H_ */
openair3/SCTP/sctp_primitives_client.c
+308
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@@ -0,0 +1,308 @@
/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <assert.h>
#include <poll.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
//WARNING: sctp requires libsctp-dev and -lsctp as linker option
#include <netinet/sctp.h>
#include <arpa/inet.h>
#include "assertions.h"
#include "sctp_eNB_defs.h"
#include "sctp_common.h"
#include "sctp_primitives_client.h"
#if defined(ENB_MODE)
# include "eNB_default_values.h"
#else
# include "mme_default_values.h"
#endif
/* Send buffer to SCTP association */
int sctp_send_msg(sctp_data_t *sctp_data_p, uint16_t ppid, uint16_t stream,
const uint8_t *buffer, const uint32_t length)
{
DevAssert(buffer != NULL);
DevAssert(sctp_data_p != NULL);
/* Send message on specified stream of the sd association
* NOTE: PPID should be defined in network order
*/
if (sctp_sendmsg(sctp_data_p->sd, (const void *)buffer, length, NULL, 0,
htonl(ppid), 0, stream, 0, 0) < 0) {
SCTP_ERROR("Sctp_sendmsg failed: %s\n", strerror(errno));
return -1;
}
SCTP_DEBUG("Successfully sent %d bytes to port %d on stream %d\n",
length, sctp_data_p->remote_port, stream);
return 0;
}
static
int sctp_handle_notifications(union sctp_notification *snp)
{
if (SCTP_SHUTDOWN_EVENT == snp->sn_header.sn_type) {
/* Client deconnection */
SCTP_DEBUG("Notification received: server deconnected\n");
} else if (SCTP_ASSOC_CHANGE == snp->sn_header.sn_type) {
/* Association has changed */
SCTP_DEBUG("Notification received: server association changed\n");
} else {
SCTP_DEBUG("Notification received: %d TODO\n", snp->sn_header.sn_type);
}
/* TODO: handle more notif here */
return 0;
}
int sctp_run(sctp_data_t *sctp_data_p)
{
int ret, repeat = 1;
int total_size = 0;
int sd;
struct pollfd fds;
DevAssert(sctp_data_p != NULL);
sd = sctp_data_p->sd;
memset(&fds, 0, sizeof(struct pollfd));
fds.fd = sd;
fds.events = POLLIN;
while (repeat == 1) {
ret = poll(&fds, 1, 0);
if (ret < 0) {
SCTP_ERROR("[SD %d] Poll has failed (%d:%s)\n",
sd, errno, strerror(errno));
return errno;
} else if (ret == 0) {
/* No data to read, just leave the loop */
SCTP_DEBUG("[SD %d] Poll: no data available\n", sd);
repeat = 0;
} else {
/* Socket has some data to read */
uint8_t buffer[SCTP_RECV_BUFFER_SIZE];
int flags = 0;
int n;
struct sockaddr_in addr;
struct sctp_sndrcvinfo sinfo;
socklen_t from_len;
memset((void *)&addr, 0, sizeof(struct sockaddr_in));
from_len = (socklen_t)sizeof(struct sockaddr_in);
memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
n = sctp_recvmsg(sd, (void *)buffer, SCTP_RECV_BUFFER_SIZE,
(struct sockaddr *)&addr, &from_len,
&sinfo, &flags);
if (n < 0) {
/* Other peer is deconnected */
SCTP_ERROR("[SD %d] An error occured during read (%d:%s)\n",
sd, errno, strerror(errno));
return 0;
}
if (flags & MSG_NOTIFICATION) {
sctp_handle_notifications((union sctp_notification *)buffer);
} else {
struct sctp_queue_item_s *new_item_p;
new_item_p = calloc(1, sizeof(struct sctp_queue_item_s));
/* Normal data received */
SCTP_DEBUG("[SD %d] Msg of length %d received from %s:%u on "
"stream %d, PPID %d, assoc_id %d\n",
sd, n, inet_ntoa(addr.sin_addr),
ntohs(addr.sin_port), sinfo.sinfo_stream,
sinfo.sinfo_ppid, sinfo.sinfo_assoc_id);
new_item_p->local_stream = sinfo.sinfo_stream;
new_item_p->remote_port = ntohs(addr.sin_port);
new_item_p->remote_addr = addr.sin_addr.s_addr;
new_item_p->ppid = sinfo.sinfo_ppid;
new_item_p->assoc_id = sinfo.sinfo_assoc_id;
new_item_p->length = n;
new_item_p->buffer = malloc(sizeof(uint8_t) * n);
memcpy(new_item_p->buffer, buffer, n);
/* Insert the new packet at the tail of queue. */
TAILQ_INSERT_TAIL(&sctp_data_p->sctp_queue, new_item_p, entry);
/* Update queue related data */
sctp_data_p->queue_size += n;
sctp_data_p->queue_length++;
total_size += n;
}
}
}
return total_size;
}
int sctp_connect_to_remote_host(char *local_ip_addr[],
int nb_local_addr,
char *remote_ip_addr,
uint16_t port,
int socket_type,
sctp_data_t *sctp_data_p)
{
int sd = -1;
socklen_t i = 0;
struct sctp_initmsg init;
struct sctp_event_subscribe events;
struct sockaddr *bindx_add_addr;
DevAssert(sctp_data_p != NULL);
DevAssert(remote_ip_addr != NULL);
DevAssert(local_ip_addr != NULL);
DevCheck((socket_type == SOCK_STREAM), socket_type, 0, 0);
SCTP_DEBUG("Creating socket type %d\n", socket_type);
/* Create new socket */
if ((sd = socket(AF_INET6, SOCK_STREAM, IPPROTO_SCTP)) < 0) {
SCTP_ERROR("Socket creation failed: %s\n", strerror(errno));
return -1;
}
/* Bind to provided IP adresses */
bindx_add_addr = calloc(nb_local_addr, sizeof(struct sockaddr));
for (i = 0; i < nb_local_addr; i++) {
if (inet_pton(AF_INET, local_ip_addr[i], &((struct sockaddr_in*)&bindx_add_addr[i])->sin_addr.s_addr) != 1) {
if (inet_pton(AF_INET6, local_ip_addr[i], &((struct sockaddr_in6*)&bindx_add_addr[i])->sin6_addr.s6_addr) != 1) {
continue;
} else {
((struct sockaddr_in6*)&bindx_add_addr[i])->sin6_port = 0;
bindx_add_addr[i].sa_family = AF_INET6;
}
} else {
((struct sockaddr_in*)&bindx_add_addr[i])->sin_port = 0;
bindx_add_addr[i].sa_family = AF_INET;
}
}
if (sctp_bindx(sd, bindx_add_addr, nb_local_addr, SCTP_BINDX_ADD_ADDR) < 0) {
SCTP_ERROR("Socket bind failed: %s\n", strerror(errno));
return -1;
}
memset((void *)&init, 0, sizeof(struct sctp_initmsg));
/* Request a number of in/out streams */
init.sinit_num_ostreams = SCTP_OUT_STREAMS;
init.sinit_max_instreams = SCTP_IN_STREAMS;
init.sinit_max_attempts = SCTP_MAX_ATTEMPTS;
SCTP_DEBUG("Requesting (%d %d) (in out) streams\n", init.sinit_num_ostreams,
init.sinit_max_instreams);
if (setsockopt(sd, IPPROTO_SCTP, SCTP_INITMSG,
&init, (socklen_t)sizeof(struct sctp_initmsg)) < 0) {
SCTP_ERROR("Setsockopt IPPROTO_SCTP_INITMSG failed: %s\n",
strerror(errno));
return -1;
}
/* Subscribe to all events */
memset((void *)&events, 1, sizeof(struct sctp_event_subscribe));
if (setsockopt(sd, IPPROTO_SCTP, SCTP_EVENTS, &events,
sizeof(struct sctp_event_subscribe)) < 0) {
SCTP_ERROR("Setsockopt IPPROTO_SCTP_EVENTS failed: %s\n",
strerror(errno));
return -1;
}
/* SOCK_STREAM socket type requires an explicit connect to the remote host
* address and port.
* Only use IPv4 for the first connection attempt
*/
{
struct sockaddr_in addr;
memset(&addr, 0, sizeof(struct sockaddr_in));
if (inet_pton(AF_INET, remote_ip_addr, &addr.sin_addr.s_addr) != 1) {
SCTP_ERROR("Failed to convert ip address %s to network type\n", remote_ip_addr);
goto err;
}
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
SCTP_DEBUG("[%d] Sending explicit connect to %s:%u\n", sd, remote_ip_addr,
port);
/* Connect to remote host and port */
if (sctp_connectx(sd, (struct sockaddr *)&addr, 1, NULL) < 0) {
SCTP_ERROR("Connect to %s:%u failed: %s\n", remote_ip_addr,
port, strerror(errno));
goto err;
}
}
/* Get SCTP status */
sctp_get_sockinfo(sd, &sctp_data_p->instreams, &sctp_data_p->outstreams,
&sctp_data_p->assoc_id);
sctp_data_p->sd = sd;
sctp_get_peeraddresses(sd, &sctp_data_p->remote_ip_addresses, &sctp_data_p->nb_remote_addresses);
sctp_get_localaddresses(sd, NULL, NULL);
TAILQ_INIT(&sctp_data_p->sctp_queue);
return sd;
err:
if (sd != 0) {
close(sd);
}
return -1;
}
openair3/SCTP/sctp_primitives_client.h
+109
View File
@@ -0,0 +1,109 @@
/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#include <stdint.h>
#include "sctp_eNB_defs.h"
#ifndef SCTP_PRIMITIVES_CLIENT_H_
#define SCTP_PRIMITIVES_CLIENT_H_
/** @defgroup _sctp_impl_ SCTP Layer Reference Implementation
* @ingroup _ref_implementation_
* @{
*/
/** \brief SCTP recv callback prototype. Will be called every time a message is
* received on socket.
* \param assocId SCTP association ID
* \param stream SCTP stream on which data had been received
* \param buffer Pointer to data (should be freed by user)
* \param length Length of message received
* @return Execution result
*/
typedef int (*sctp_recv_callback)(uint32_t assocId,
uint32_t stream,
uint8_t *buffer,
uint32_t length);
/** \brief SCTP connected callback prototype. Will be called once the
* association is ready.
* \param args argument provided by upper layer
* \param assocId SCTP association ID
* \param instreams Number of input streams negotiated with remote peer
* \param outstreams Number of output streams negotiated with remote peer
* @return Execution result
*/
typedef int (*sctp_connected_callback)(void *args,
uint32_t assocId,
uint32_t instreams,
uint32_t outstreams);
/** \brief Perform association to a remote peer
* \param ip_addr Peer IPv4 address
* \param port Remote port to connect to
* \param args Upper layer args that will be provided to connected callback
* \param connected_callback Connected callback
* \param recv_callback Data received callback
* @return < 0 in case of failure
*/
int sctp_connect_to_remote_host(char *local_ip_addr[],
int nb_local_addr,
char *remote_ip_addr,
uint16_t port,
int socket_type,
sctp_data_t *sctp_data_p);
/** \brief Send message over SCTP
* \param sctp_data_p Pointer to the SCTP desc
* \param ppid Payload Protocol Identifier
* \param stream SCTP stream on which data will be sent
* \param buffer Pointer to buffer
* \param length Buffer length
* @return < 0 in case of failure
*/
int sctp_send_msg(sctp_data_t *sctp_data_p, uint16_t ppid, uint16_t stream,
const uint8_t *buffer, const uint32_t length);
/** \brief Flush the FIFO of messages from the socket
* \param sctp_data_p
* @return < 0 in case of failure
*/
int sctp_run(sctp_data_t *sctp_data_p);
/** \brief Properly disconnect the peer
* \param assoc_id The SCTP association ID
* @return < 0 in case of failure
*/
void sctp_disconnect(uint32_t assoc_id);
void sctp_terminate(void);
/* @} */
#endif /* SCTP_PRIMITIVES_CLIENT_H_ */