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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
of this license document, but changing it is not allowed.
Preamble
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THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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To do so, attach the following notices to the program. It is safest
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<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
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the Free Software Foundation, either version 3 of the License, or
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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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You should have received a copy of the GNU General Public License
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Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
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>.
openair-cn/SGI/Makefile.am deleted 100644 → 0
View file @ 9aa4543a
################################################################################
# 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@eurecom.fr
#
# Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
#
################################################################################
AM_CFLAGS = @ADD_CFLAGS@ \
-I$(top_srcdir)/COMMON \
-I$(top_srcdir)/SGW-LITE \
-I$(top_srcdir)/UTILS \
-I$(top_srcdir)/UTILS/HASHTABLE \
-I$(top_srcdir)/NAS/EURECOM-NAS/src/api/network \
-I$(top_srcdir)/NAS/EURECOM-NAS/src/include \
-I$(top_srcdir)/NAS/EURECOM-NAS/src/ies \
-I$(top_srcdir)/NAS/EURECOM-NAS/src/emm/msg \
-I$(top_srcdir)/NAS/EURECOM-NAS/src/esm/msg \
-I$(top_srcdir)/NAS/EURECOM-NAS/src/util \
-I$(top_srcdir)/GTPV1-U \
-I$(top_srcdir)/INTERTASK_INTERFACE
noinst_LTLIBRARIES = libsgi.la
libsgi_la_LDFLAGS = -all-static
libsgi_la_SOURCES = \
sgi_task.c sgi.h \
sgi_socket.c \
sgi_egress.c \
sgi_util.c
if ENABLE_USE_PCAP_FOR_SGI
libsgi_la_SOURCES += sgi_pcap.c \
/usr/lib/libpcap.a
endif
if ENABLE_USE_NETFILTER_FOR_SGI
libsgi_la_SOURCES += sgi_nf.c \
/usr/lib/libnetfilter_queue.a \
/usr/lib/libnfnetlink.la
endif
openair-cn/SGI/sgi.h deleted 100755 → 0
View file @ 9aa4543a
/*******************************************************************************
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@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file sgi.h
* \brief
* \author Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#ifndef SGI_H_
#define SGI_H_
#include <net/ethernet.h>
#include <netinet/in.h>
#include <pthread.h>
#include <stdio.h>
#ifdef ENABLE_USE_NETFILTER_FOR_SGI
#warning "ENABLE_USE_NETFILTER_FOR_SGI"
#define SGI_SOCKET_RAW 1
#define SGI_SOCKET_BIND_TO_IF 1
#undef SGI_MARKING
#undef SGI_PACKET_RX_RING
#undef SGI_SOCKET_UDP
#else
#warning "DISABLE_USE_NETFILTER_FOR_SGI"
//#define SGI_SOCKET_RAW 1
#undef SGI_SOCKET_RAW
#define SGI_SOCKET_DGRAM 1
#define SGI_SOCKET_BIND_TO_IF 1
#undef SGI_PACKET_RX_RING
#undef SGI_MARKING
#undef SGI_SOCKET_UDP
#endif
#ifdef ENABLE_USE_PCAP_FOR_SGI
#include <pcap.h>
#endif
//#define SGI_TEST
// Packets include a ethernet header if SGI_PF_PACKET is defined
#define SGI_PF_PACKET
#include "common_types.h"
#include "hashtable.h"
#include "obj_hashtable.h"
#include "sgw_lite_ie_defs.h"
#include "ip_forward_messages_types.h"
# define SGI_IF_DEBUG(x, args...)
# define SGI_IF_ERROR(x, args...)
# define SGI_IF_WARNING(x, args...)
//-----------------------------------------------------------------------------
#ifndef SGI_IF_DEBUG
# define SGI_IF_DEBUG(x, args...) do { fprintf(stdout, "[SGI_IF][D]"x, ##args); } \
while(0)
#endif
#ifndef SGI_IF_ERROR
# define SGI_IF_ERROR(x, args...) do { fprintf(stderr, "[SGI_IF][E]"x, ##args); } \
while(0)
#endif
#ifndef SGI_IF_WARNING
# define SGI_IF_WARNING(x, args...) do { fprintf(stderr, "[SGI_IF][W]"x, ##args); } \
while(0)
#endif
// refer to 3GPP TS 23.203 V10.6.0 (2012-03) page 33
//#define MAX_DEFINED_QCI 0
#define MAX_DEFINED_QCI 9
#define SGI_MIN_EPS_BEARER_ID 5
#define SGI_MAX_SERVED_USERS_PER_PGW 1024
#define SGI_MAX_EPS_BEARERS_PER_USER 11
#define MAX_DEFINED_IPV6_ADDRESSES_PER_UE 16
#define NIP6ADDR(addr) \
ntohs((addr)->s6_addr16[0]), \
ntohs((addr)->s6_addr16[1]), \
ntohs((addr)->s6_addr16[2]), \
ntohs((addr)->s6_addr16[3]), \
ntohs((addr)->s6_addr16[4]), \
ntohs((addr)->s6_addr16[5]), \
ntohs((addr)->s6_addr16[6]), \
ntohs((addr)->s6_addr16[7])
#define NIPADDR(addr) \
(uint8_t)(addr & 0x000000FF), \
(uint8_t)((addr & 0x0000FF00) >> 8), \
(uint8_t)((addr & 0x00FF0000) >> 16), \
(uint8_t)((addr & 0xFF000000) >> 24)
#define NMACADDR(addr) \
(uint8_t)(addr[0]), \
(uint8_t)(addr[1]), \
(uint8_t)(addr[2]), \
(uint8_t)(addr[3]), \
(uint8_t)(addr[4]), \
(uint8_t)(addr[5])
#ifdef VLAN8021Q
typedef struct vlan_tag_s {
uint16_t vlan_tpid; /* ETH_P_8021Q */
uint16_t vlan_tci; /* VLAN TCI */
} vlan_tag_t __attribute__ ((__packed__));
typedef struct ether_header_8021q_s {
u_int8_t ether_dhost[ETH_ALEN]; /* destination eth addr */
u_int8_t ether_shost[ETH_ALEN]; /* source ether addr */
vlan_tag_t ether_vlan8021q;
u_int16_t ether_type; /* packet type ID field */
} ether_header_8021q_t __attribute__ ((__packed__));
#endif
typedef struct arphdr_s {
__be16 ar_hrd; /* format of hardware address */
__be16 ar_pro; /* format of protocol address */
unsigned char ar_hln; /* length of hardware address */
unsigned char ar_pln; /* length of protocol address */
__be16 ar_op; /* ARP opcode (command) */
/*
* Ethernet looks like this : This bit is variable sized however...
*/
unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
unsigned char ar_sip[4]; /* sender IP address */
unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
unsigned char ar_tip[4]; /* target IP address */
} arphdr_t;
typedef struct sgi_teid_mapping_s {
int is_outgoing_ipv4_packet_seen;
int is_outgoing_ipv6_packet_seen;
Teid_t enb_S1U_teid; ///< dest tunnel identifier
qci_t qci;
ebi_t eps_bearer_id; ///< EPS bearer identifier
char hw_addrlen;
#ifdef SGI_UE_ETHER_TRAFFIC
char ue_mac_addr[8];
#endif
struct in6_addr in6_addr_captured[MAX_DEFINED_IPV6_ADDRESSES_PER_UE];
struct in_addr in_add_captured;
} sgi_teid_mapping_t;
// Main goal is to do an association IP address <-> MAC address
// may be usefull for netfilter that does not capture MAC address
// if not set on certain hook points (table,path).
typedef struct sgi_addr_mapping_s {
int is_outgoing_packet_seen;
ebi_t eps_bearer_id; ///< EPS default bearer identifier, (really ?)
Teid_t enb_S1U_teid; ///< dest tunnel identifier, for default bearer
Teid_t sgw_S1U_teid; ///< dest tunnel identifier, for default bearer
#ifdef SGI_UE_ETHER_TRAFFIC
char ue_mac_addr[ETH_ALEN];
#endif
} sgi_addr_mapping_t;
typedef struct sgi_data_s {
int sd[SGI_MAX_EPS_BEARERS_PER_USER];
unsigned int if_index[SGI_MAX_EPS_BEARERS_PER_USER];
int sd6;
char *interface_name;
int interface_name_len;
int interface_index;
#ifndef SGI_UE_ETHER_TRAFFIC
char interface_hw_address[ETH_ALEN];
#ifdef VLAN8021Q
struct ether_header_8021q_s eh;
#else
struct ether_header eh;
#endif
#endif
uint32_t ipv4_addr;
hash_table_t *teid_mapping;
hash_table_t *addr_v4_mapping;
obj_hash_table_t *addr_v6_mapping;
pthread_t capture_on_sgi_if_thread;
pthread_mutex_t thread_started_mutex;
int thread_started;
void *sock_mmap_ring;
struct iovec *malloc_ring;
int hw_address_of_router_captured;
uint32_t local_addr_v4_4_hw_address_router_capture;
uint32_t ipv4_addr_of_router;
char hss_associated;
#ifdef ENABLE_USE_PCAP_FOR_SGI
//brief PCAP descriptor for capturing packets on SGI interface.
pcap_t * pcap_descr;
#endif
#define SGI_BUFFER_RECV_LEN 3000
unsigned char recv_buffer[sizeof(struct ether_header) + SGI_BUFFER_RECV_LEN][SGI_MAX_EPS_BEARERS_PER_USER];
} sgi_data_t;
typedef struct sgi_read_thread_args_s {
sgi_data_t *sgi_data;
int socket_index;
} sgi_read_thread_args_t;
//-----------------------------------------------------------------------------
#include "mme_config.h"
#define SGI_MAX_EPS_BEARERS (SGI_MAX_SERVED_USERS_PER_PGW*SGI_MAX_EPS_BEARERS_PER_USER)
//-----------------------------------------------------------------------------
// sgi_task.c
//-----------------------------------------------------------------------------
#include "spgw_config.h"
int sgi_init(const pgw_config_t *pgw_config_p);
char* sgi_status_2_str(SGIStatus_t statusP);
//-----------------------------------------------------------------------------
// sgi_nf.c
//-----------------------------------------------------------------------------
#ifdef ENABLE_USE_NETFILTER_FOR_SGI
void* sgi_nf_fw_2_gtpv1u_thread(void *args_p);
#endif
//-----------------------------------------------------------------------------
// sgi_pcap.c
//-----------------------------------------------------------------------------
#ifdef ENABLE_USE_PCAP_FOR_SGI
# define SGI_PCAPMAXBYTES2CAPTURE 65535
# define SGI_PCAPTIMEDELAYKERNEL2USERSPACE 1000
/*! \fn void* sgi_pcap_loop(void*)
* \brief
* \param[in] devname The name of the device (ex "eth1") that will be listened for capturing packets.
* \param[in] iif The interface identifier that will be listened for capturing packets.
*/
void* sgi_pcap_fw_2_gtpv1u_thread(void*);
#endif
//-----------------------------------------------------------------------------
// sgi_util.c
//-----------------------------------------------------------------------------
void sgi_print_hex_octets(unsigned char* dataP, unsigned long sizeP);
char* sgi_status_2_str (SGIStatus_t statusP);
char* sgi_arpopcode_2_str (unsigned short int opcodeP);
unsigned short in_cksum(unsigned short *addr, int len);
void sgi_send_arp_request(sgi_data_t *sgi_dataP, char* dst_ip_addrP);
//-----------------------------------------------------------------------------
// sgi_socket.c
//-----------------------------------------------------------------------------
int sgi_create_sockets(sgi_data_t *sgi_data_p);
int sgi_send_data(uint8_t *buffer, uint32_t length, sgi_data_t *sgi_dataP, Teid_t originating_sgw_S1u_teidP);
int sgi_dgram_send_data(uint8_t *buffer_pP, uint32_t length, sgi_data_t *sgi_data_pP, Teid_t originating_sgw_S1u_teidP);
#ifdef SGI_TEST
unsigned short in_cksum(unsigned short *addr, int len);
void sgi_test_send_ping(sgi_data_t *sgi_dataP, uint32_t markP, uint64_t src_mac_addrP, uint64_t dst_mac_addrP, char* src_ip_addrP, char* dst_ip_addrP);
#endif
#ifdef ENABLE_USE_RAW_SOCKET_FOR_SGI
void sgi_sock_raw_cleanup_handler(void *args_p);
void* sgi_sock_raw_fw_2_gtpv1u_thread(void* args_p);
#endif
//-----------------------------------------------------------------------------
// sgi_egress.c
//-----------------------------------------------------------------------------
void sgi_forward_ip_packet(sgi_data_t *sgi_dataP, struct ether_header *ehP, int packet_sizeP, sgi_addr_mapping_t *addr_mappingP);
#ifdef ENABLE_USE_RAW_SOCKET_FOR_SGI
void sgi_process_raw_packet(sgi_data_t *sgi_dataP, unsigned char* dataP, int packet_sizeP);
#endif
void sgi_process_dgram_packet(sgi_data_t *sgi_dataP, unsigned char* dataP, int packet_sizeP);
#endif /* SGI_H_ */
openair-cn/SGI/sgi_egress.c deleted 100755 → 0
View file @ 9aa4543a
/*******************************************************************************
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@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file sgi_egress.c
* \brief
* \author Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include "sgi.h"
#include "gtpv1u.h"
#include "intertask_interface.h"
#include "assertions.h"
#include <netinet/ip6.h>
#include <netinet/ip.h>
#include <net/if_arp.h>
struct ipv6hdr {
__u8 priority:4,
version:4;
__u8 flow_lbl[3];
__be16 payload_len;
__u8 nexthdr;
__u8 hop_limit;
struct in6_addr saddr;
struct in6_addr daddr;
};
#ifdef ENABLE_USE_RAW_SOCKET_FOR_SGI
#ifdef SGI_UE_ETHER_TRAFFIC
void sgi_process_raw_packet(sgi_data_t *sgi_data_pP, unsigned char* data_pP, int packet_sizeP)
{
Gtpv1uTunnelDataReq *gtpv1u_tunnel_data_req_p = NULL;
MessageDef *message_p = NULL;
unsigned char *message_payload_p = NULL ;
struct ether_header *eh_p = (struct ether_header *) data_pP;
struct arphdr *arph_p = NULL;
struct iphdr *iph_p = NULL;
struct ipv6hdr *ip6h_p = NULL;
//struct arphdr *rarph = NULL;
//unsigned char *rarp_ptr = NULL;
//unsigned char *sha = NULL; /* Sender hardware address. */
//unsigned char *tha = NULL; /* Target hardware address. */
sgi_addr_mapping_t *addr_mapping_p = NULL;
//__be32 sip, tip; /* Sender, target IP address. */
struct in6_addr dest6_addr;
u_int32_t dest4_addr;
struct in_addr in_dest_addr;
switch (htons(eh_p->ether_type)) {
//*******************
case ETHERTYPE_IP:
//*******************
iph_p = (struct iphdr *) (data_pP + sizeof(struct ether_header));
dest4_addr = iph_p->daddr;
if (hashtable_get(sgi_data_pP->addr_v4_mapping, dest4_addr, (void**)&addr_mapping_p) == HASH_TABLE_OK) {
memcpy(eh_p->ether_dhost, addr_mapping_p->ue_mac_addr, ETH_ALEN);
//SGI_IF_DEBUG("--------------------------------------------------------------\n%s :\n", __FUNCTION__);
//sgi_print_hex_octets(data_pP, packet_sizeP);
} else {
if (sgi_data_pP->ipv4_addr == dest4_addr) {
//SGI_IF_DEBUG("%s Dropping incoming egress IPV4 packet not UE IP flow\n", __FUNCTION__);
return;
} else {
in_dest_addr.s_addr = dest4_addr;
//SGI_IF_WARNING("%s Dropping incoming egress IPV4 packet, IPV4 dest %s not found \n", __FUNCTION__, inet_ntoa(in_dest_addr));
return;
}
}
break;
//*******************
case ETHERTYPE_IPV6:
//*******************
ip6h_p = (struct ipv6hdr *) (data_pP + sizeof(struct ether_header));
memcpy(dest6_addr.__in6_u.__u6_addr8, ip6h_p->daddr.__in6_u.__u6_addr8, 16);
if (obj_hashtable_get(sgi_data_pP->addr_v6_mapping, (void*)&dest6_addr, sizeof(struct in6_addr), (void**)&addr_mapping_p) == HASH_TABLE_OK) {
memcpy(eh_p->ether_dhost, addr_mapping_p->ue_mac_addr, ETH_ALEN);
//SGI_IF_DEBUG("--------------------------------------------------------------\n%s :\n", __FUNCTION__);
//sgi_print_hex_octets(data_pP, packet_sizeP);
} else {
//SGI_IF_WARNING("%s Dropping incoming egress IPV6 packet, IPV6 dest %X:%X:%X:%X:%X:%X:%X:%X not found \n", __FUNCTION__, NIP6ADDR(&dest6_addr));
return;
}
break;
//*******************
case ETHERTYPE_REVARP:
//*******************
SGI_IF_ERROR("%s UNHANDLED ETHERTYPE_REVARP of incoming egress packet\n", __FUNCTION__);
return;
break;
//*******************
case ETHERTYPE_ARP:
//*******************
SGI_IF_DEBUG("%s HANDLED ETHERTYPE_ARP of incoming egress packet\n", __FUNCTION__);
arph_p = (struct arphdr *) (data_pP + sizeof(struct ether_header));
#ifdef SGI_UE_ETHER_TRAFFIC
// The entry should be here but all signalling tied with RRC procedures not finished so
// a data packet can arrive before the MODIFY_BEARER REQUEST
// get " unsigned char __ar_tip[4]; /* Target IP address. */" (from /usr/include/net/if_apr.h line 68)
memcpy(&dest4_addr, &((unsigned char*)(&arph_p[1]))[ETH_ALEN*2+4], 4);
SGI_IF_DEBUG("%s ARP OPCODE %s TARGET IP %d.%d.%d.%d\n", __FUNCTION__, sgi_arpopcode_2_str(ntohl(arph_p->ar_op)), NIPADDR(dest4_addr));
if (hashtable_get(sgi_data_pP->addr_v4_mapping, dest4_addr, (void**)&addr_mapping_p) == HASH_TABLE_OK) {
memcpy(eh_p->ether_dhost, addr_mapping_p->ue_mac_addr, ETH_ALEN);
} else {
if (sgi_data_pP->ipv4_addr == dest4_addr) {
//SGI_IF_DEBUG("%s Dropping incoming egress IPV4 packet not UE IP flow\n", __FUNCTION__);
return;
} else {
in_dest_addr.s_addr = dest4_addr;
//SGI_IF_WARNING("%s Dropping incoming egress IPV4 packet, IPV4 dest %s not found \n", __FUNCTION__, inet_ntoa(in_dest_addr));
return;
}
}
#else
#endif
break;
// rarph = (struct arphdr *)(data_pP + sizeof(struct ether_header));
//
// // If it's not Ethernet, delete it.
// if (rarph->ar_pro != htons(ETH_P_IP)) {
// SGI_IF_ERROR("%s ARP PACKET PROTOCOL OG INCOMING PACKET IS NOT ETHERNET\n",__FUNCTION__);
// break;
// }
// rarp_ptr = (unsigned char *) (rarph + 1);
// sha = rarp_ptr;
// rarp_ptr += ETH_ALEN;
// memcpy(&sip, rarp_ptr, 4);
// rarp_ptr += 4;
// tha = rarp_ptr;
// rarp_ptr += ETH_ALEN;
// memcpy(&tip, rarp_ptr, 4);
// SGI_IF_DEBUG("%s ARP DEST IP transport IP = %d.%d.%d.%d\n",__FUNCTION__, NIPADDR(tip));
// // TO DO IF NECESSARY
// break;
//
default:
SGI_IF_ERROR("%s UNHANDLED ether type %d of incoming egress packet\n", __FUNCTION__, eh_p->ether_type);
return;
}
message_p = itti_alloc_new_message(TASK_FW_IP, GTPV1U_TUNNEL_DATA_REQ);
if (message_p == NULL) {
SGI_IF_ERROR("%s OUT OF MEMORY DROP EGRESS PACKET\n", __FUNCTION__);
return;
}
message_payload_p = itti_malloc(TASK_FW_IP, TASK_GTPV1_U, packet_sizeP);
if (message_payload_p == NULL) {
SGI_IF_ERROR("%s OUT OF MEMORY DROP EGRESS PACKET\n", __FUNCTION__);
return;
}
memcpy(message_payload_p, data_pP, packet_sizeP);
gtpv1u_tunnel_data_req_p = &message_p->ittiMsg.gtpv1uTunnelDataReq;
//LG HACK gtpv1u_tunnel_data_req_p->S1u_enb_teid = addr_mapping_p->enb_S1U_teid;
#warning forced S1u_enb_teid to 1 for testing, waiting for MODIFY_BEARER REQUEST
gtpv1u_tunnel_data_req_p->S1u_enb_teid = 1;
gtpv1u_tunnel_data_req_p->local_S1u_teid = addr_mapping_p->sgw_S1U_teid;
gtpv1u_tunnel_data_req_p->length = packet_sizeP;
gtpv1u_tunnel_data_req_p->buffer = message_payload_p;
SGI_IF_DEBUG("%s ETHER send GTPV1U_TUNNEL_DATA_REQ to GTPV1U S1u_enb_teid %u local_S1u_teid %u size %u\n", __FUNCTION__, gtpv1u_tunnel_data_req_p->S1u_enb_teid,
gtpv1u_tunnel_data_req_p->local_S1u_teid, packet_sizeP);
itti_send_msg_to_task(TASK_GTPV1_U, INSTANCE_DEFAULT, message_p);
}
#else
void sgi_process_raw_packet(sgi_data_t *sgi_data_pP, unsigned char* data_pP, int packet_sizeP)
{
Gtpv1uTunnelDataReq *gtpv1u_tunnel_data_req_p = NULL;
MessageDef *message_p = NULL;
unsigned char *message_payload_p = NULL ;
struct ether_header *eh_p = (struct ether_header *) data_pP;
struct arphdr *arph_p = NULL;
struct iphdr *iph_p = NULL;
struct ipv6hdr *ip6h_p = NULL;
sgi_addr_mapping_t *addr_mapping_p = NULL;
struct in6_addr dest6_addr;
u_int32_t dest4_addr;
u_int32_t src4_addr;
struct in_addr in_dest_addr;
switch (htons(eh_p->ether_type)) {
//sgi_print_hex_octets(data_pP, packet_sizeP);
//*******************
case ETHERTYPE_IP:
//*******************
iph_p = (struct iphdr *) (data_pP + sizeof(struct ether_header));
dest4_addr = iph_p->daddr;
if (hashtable_get(sgi_data_pP->addr_v4_mapping, dest4_addr, (void**)&addr_mapping_p) != HASH_TABLE_OK) {
if (sgi_data_pP->ipv4_addr == dest4_addr) {
//SGI_IF_DEBUG("%s Dropping incoming egress IPV4 packet not UE IP flow\n", __FUNCTION__);
return;
} else {
in_dest_addr.s_addr = dest4_addr;
//SGI_IF_WARNING("%s Dropping incoming egress IPV4 packet, IPV4 dest %s not found \n", __FUNCTION__, inet_ntoa(in_dest_addr));
return;
}
}
break;
//*******************
case ETHERTYPE_IPV6:
//*******************
ip6h_p = (struct ipv6hdr *) (data_pP + sizeof(struct ether_header));
memcpy(dest6_addr.__in6_u.__u6_addr8, ip6h_p->daddr.__in6_u.__u6_addr8, 16);
if (obj_hashtable_get(sgi_data_pP->addr_v6_mapping, (void*)&dest6_addr, sizeof(struct in6_addr), (void**)&addr_mapping_p) != HASH_TABLE_OK) {
SGI_IF_WARNING("%s Dropping incoming egress IPV6 packet, IPV6 dest %X:%X:%X:%X:%X:%X:%X:%X not found \n", __FUNCTION__, NIP6ADDR(&dest6_addr));
return;
}
break;
//*******************
case ETHERTYPE_REVARP:
//*******************
SGI_IF_ERROR("%s UNHANDLED ETHERTYPE_REVARP of incoming egress packet\n", __FUNCTION__);
return;
break;
//*******************
case ETHERTYPE_ARP:
//*******************
SGI_IF_DEBUG("%s HANDLED ETHERTYPE_ARP of incoming egress packet\n", __FUNCTION__);
arph_p = (struct arphdr *) (data_pP + sizeof(struct ether_header));
// The entry should be here but all signalling tied with RRC procedures not finished so
// a data packet can arrive before the MODIFY_BEARER REQUEST
// get " unsigned char __ar_tip[4]; /* Target IP address. */" (from /usr/include/net/if_apr.h line 68)
memcpy(&dest4_addr, &((unsigned char*)(&arph_p[1]))[ETH_ALEN*2+4], 4);
SGI_IF_DEBUG("%s ARP OPCODE %s TARGET IP %d.%d.%d.%d\n", __FUNCTION__, sgi_arpopcode_2_str(ntohl(arph_p->ar_op)), NIPADDR(dest4_addr));
if (hashtable_get(sgi_data_pP->addr_v4_mapping, dest4_addr, (void**)&addr_mapping_p) != HASH_TABLE_OK) {
if (sgi_data_pP->ipv4_addr == dest4_addr) {
SGI_IF_DEBUG("%s Dropping incoming egress IPV4 packet not UE IP flow\n", __FUNCTION__);
return;
} else {
if (sgi_data_pP->hw_address_of_router_captured) {
in_dest_addr.s_addr = dest4_addr;
SGI_IF_WARNING("%s Dropping incoming egress IPV4 packet, IPV4 dest %s not found \n", __FUNCTION__, inet_ntoa(in_dest_addr));
} else {
// may be a response to our ARP request to router
if (htons(arph_p->ar_op) == ARPOP_REPLY) {
memcpy(&src4_addr, &((unsigned char*)(&arph_p[1]))[ETH_ALEN], 4);
SGI_IF_DEBUG("%s FOR ROUTER HW ADDRESS COMPARING: %d - %d %d - %d\n",
__FUNCTION__,
sgi_data_pP->local_addr_v4_4_hw_address_router_capture,
dest4_addr,
sgi_data_pP->ipv4_addr_of_router,
src4_addr);
if ((sgi_data_pP->local_addr_v4_4_hw_address_router_capture == dest4_addr) && (sgi_data_pP->ipv4_addr_of_router == src4_addr)) {
sgi_data_pP->hw_address_of_router_captured = 1;
sgi_data_pP->eh.ether_dhost[0] = ((unsigned char*)(&arph_p[1]))[0];
sgi_data_pP->eh.ether_dhost[1] = ((unsigned char*)(&arph_p[1]))[1];
sgi_data_pP->eh.ether_dhost[2] = ((unsigned char*)(&arph_p[1]))[2];
sgi_data_pP->eh.ether_dhost[3] = ((unsigned char*)(&arph_p[1]))[3];
sgi_data_pP->eh.ether_dhost[4] = ((unsigned char*)(&arph_p[1]))[4];
sgi_data_pP->eh.ether_dhost[5] = ((unsigned char*)(&arph_p[1]))[5];
SGI_IF_DEBUG("%s FOUND ROUTER HW ADDRESS: %02x:%02x:%02x:%02x:%02x:%02x\n", __FUNCTION__, NMACADDR(sgi_data_pP->eh.ether_dhost));
}
}
}
return;
}
}
break;
default:
//SGI_IF_ERROR("%s UNHANDLED ether type %d of incoming egress packet\n", __FUNCTION__, eh_p->ether_type);
return;
}
//SGI_IF_DEBUG("--------------------------------------------------------------\n%s :\n", __FUNCTION__);
//sgi_print_hex_octets(data_pP+sizeof(sgi_data_pP->eh), packet_sizeP - sizeof(sgi_data_pP->eh));
message_p = itti_alloc_new_message(TASK_FW_IP, GTPV1U_TUNNEL_DATA_REQ);
if (message_p == NULL) {
SGI_IF_ERROR("%s OUT OF MEMORY DROP EGRESS PACKET\n", __FUNCTION__);
return;
}
AssertFatal((packet_sizeP - sizeof(sgi_data_pP->eh)) > 20, "BAD IP PACKET SIZE");
message_payload_p = itti_malloc(TASK_FW_IP, TASK_GTPV1_U, packet_sizeP - sizeof(sgi_data_pP->eh) + GTPU_HEADER_OVERHEAD_MAX);
if (message_payload_p == NULL) {
SGI_IF_ERROR("%s OUT OF MEMORY DROP EGRESS PACKET\n", __FUNCTION__);
return;
}
memcpy(message_payload_p + GTPU_HEADER_OVERHEAD_MAX, data_pP+sizeof(sgi_data_pP->eh), packet_sizeP - sizeof(sgi_data_pP->eh));
gtpv1u_tunnel_data_req_p = &message_p->ittiMsg.gtpv1uTunnelDataReq;
gtpv1u_tunnel_data_req_p->S1u_enb_teid = addr_mapping_p->enb_S1U_teid;
//#warning forced S1u_enb_teid to 1 for testing, waiting for MODIFY_BEARER REQUEST
// gtpv1u_tunnel_data_req_p->S1u_enb_teid = 1;
gtpv1u_tunnel_data_req_p->local_S1u_teid = addr_mapping_p->sgw_S1U_teid;
gtpv1u_tunnel_data_req_p->length = packet_sizeP - sizeof(sgi_data_pP->eh);
gtpv1u_tunnel_data_req_p->offset = GTPU_HEADER_OVERHEAD_MAX;
gtpv1u_tunnel_data_req_p->buffer = message_payload_p;
SGI_IF_DEBUG("%s send GTPV1U_TUNNEL_DATA_REQ to GTPV1U S1u_enb_teid %u local_S1u_teid %u size %u\n",
__FUNCTION__,
gtpv1u_tunnel_data_req_p->S1u_enb_teid,
gtpv1u_tunnel_data_req_p->local_S1u_teid,
gtpv1u_tunnel_data_req_p->length);
itti_send_msg_to_task(TASK_GTPV1_U, INSTANCE_DEFAULT, message_p);
}
#endif
#endif
void sgi_process_dgram_packet(sgi_data_t *sgi_data_pP, unsigned char* data_pP, int packet_sizeP)
{
Gtpv1uTunnelDataReq *gtpv1u_tunnel_data_req_p = NULL;
MessageDef *message_p = NULL;
unsigned char *message_payload_p = NULL ;
struct arphdr *arph_p = NULL;
struct iphdr *iph_p = NULL;
struct ipv6hdr *ip6h_p = NULL;
sgi_addr_mapping_t *addr_mapping_p = NULL;
struct in6_addr dest6_addr;
u_int32_t dest4_addr;
u_int32_t src4_addr;
struct in_addr in_dest_addr;
sgi_print_hex_octets(data_pP, packet_sizeP);
return;
message_p = itti_alloc_new_message(TASK_FW_IP, GTPV1U_TUNNEL_DATA_REQ);
if (message_p == NULL) {
SGI_IF_ERROR("%s OUT OF MEMORY DROP EGRESS PACKET\n", __FUNCTION__);
return;
}
AssertFatal(packet_sizeP > 20, "BAD IP PACKET SIZE");
message_payload_p = itti_malloc(TASK_FW_IP, TASK_GTPV1_U, packet_sizeP + GTPU_HEADER_OVERHEAD_MAX);
if (message_payload_p == NULL) {
SGI_IF_ERROR("%s OUT OF MEMORY DROP EGRESS PACKET\n", __FUNCTION__);
return;
}
memcpy(message_payload_p + GTPU_HEADER_OVERHEAD_MAX, data_pP, packet_sizeP);
gtpv1u_tunnel_data_req_p = &message_p->ittiMsg.gtpv1uTunnelDataReq;
gtpv1u_tunnel_data_req_p->S1u_enb_teid = addr_mapping_p->enb_S1U_teid;
//#warning forced S1u_enb_teid to 1 for testing, waiting for MODIFY_BEARER REQUEST
// gtpv1u_tunnel_data_req_p->S1u_enb_teid = 1;
gtpv1u_tunnel_data_req_p->local_S1u_teid = addr_mapping_p->sgw_S1U_teid;
gtpv1u_tunnel_data_req_p->length = packet_sizeP ;
gtpv1u_tunnel_data_req_p->offset = GTPU_HEADER_OVERHEAD_MAX;
gtpv1u_tunnel_data_req_p->buffer = message_payload_p;
SGI_IF_DEBUG("%s send GTPV1U_TUNNEL_DATA_REQ to GTPV1U S1u_enb_teid %u local_S1u_teid %u size %u\n",
__FUNCTION__,
gtpv1u_tunnel_data_req_p->S1u_enb_teid,
gtpv1u_tunnel_data_req_p->local_S1u_teid,
gtpv1u_tunnel_data_req_p->length);
itti_send_msg_to_task(TASK_GTPV1_U, INSTANCE_DEFAULT, message_p);
}
openair-cn/SGI/sgi_nf.c deleted 100755 → 0
View file @ 9aa4543a
/*******************************************************************************
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@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file sgi_nf.c
* \brief
* \author Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#include <stdio.h>
#include <string.h>
#include <netinet/in.h>
#include <linux/netfilter.h> /* Defines verdicts (NF_ACCEPT, etc) */
#include <libnfnetlink/libnfnetlink.h>
#include <libnetfilter_queue/libnetfilter_queue.h>
#include <libnetfilter_queue/linux_nfnetlink_queue.h>
#include "mme_config.h"
#include "intertask_interface.h"
#include "sgi.h"
//-----------------------------------------------------------------------------
struct nfq_handle {
struct nfnl_handle *nfnlh;
struct nfnl_subsys_handle *nfnlssh;
struct nfq_q_handle *qh_list;
};
struct nfq_q_handle {
struct nfq_q_handle *next;
struct nfq_handle *h;
u_int16_t id;
nfq_callback *cb;
void *data;
};
struct nfq_data {
struct nfattr **data;
};
enum {
NFQ_XML_HW = (1 << 0), NFQ_XML_MARK = (1 << 1), NFQ_XML_DEV = (1 << 2), NFQ_XML_PHYSDEV = (1 << 3),
NFQ_XML_PAYLOAD = (1 << 4), NFQ_XML_TIME = (1 << 5), NFQ_XML_ALL = ~0U
};
//------------------------------------------------------
#define SNPRINTF_FAILURE(ret, rem, offset, len) \
do { \
if (ret < 0) \
return ret; \
len += ret; \
if (ret > rem) \
ret = rem; \
offset += ret; \
rem -= ret; \
} while (0)
//------------------------------------------------------
static int nfq_snprintf(char *buf, size_t rem, struct nfq_data *tb, int flags)
//------------------------------------------------------
{
struct nfqnl_msg_packet_hdr *ph;
struct nfqnl_msg_packet_hw *hwph;
u_int32_t mark, ifi;
int size, offset = 0, len = 0, ret;
unsigned char *data;
size = snprintf(buf + offset, rem, "<pkt>");
SNPRINTF_FAILURE(size, rem, offset, len);
ph = nfq_get_msg_packet_hdr(tb);
if (ph) {
size = snprintf(buf + offset, rem,
"<hook> %u <id>%u",
ph->hook, ntohl(ph->packet_id));
SNPRINTF_FAILURE(size, rem, offset, len);
hwph = nfq_get_packet_hw(tb);
if (hwph && (flags & NFQ_XML_HW)) {
int i, hlen = ntohs(hwph->hw_addrlen);
size = snprintf(buf + offset, rem, "<hw><proto>%04x"
"</proto>",
ntohs(ph->hw_protocol));
SNPRINTF_FAILURE(size, rem, offset, len);
size = snprintf(buf + offset, rem, "<src>");
SNPRINTF_FAILURE(size, rem, offset, len);
for (i=0; i<hlen; i++) {
size = snprintf(buf + offset, rem, "%02x",
hwph->hw_addr[i]);
SNPRINTF_FAILURE(size, rem, offset, len);
}
size = snprintf(buf + offset, rem, "</src></hw>");
SNPRINTF_FAILURE(size, rem, offset, len);
} else if (flags & NFQ_XML_HW) {
size = snprintf(buf + offset, rem, "<hw><proto>%04x"
"</proto></hw>",
ntohs(ph->hw_protocol));
SNPRINTF_FAILURE(size, rem, offset, len);
}
}
mark = nfq_get_nfmark(tb);
if (mark && (flags & NFQ_XML_MARK)) {
size = snprintf(buf + offset, rem, "<mark>%u</mark>", mark);
SNPRINTF_FAILURE(size, rem, offset, len);
}
ifi = nfq_get_indev(tb);
if (ifi && (flags & NFQ_XML_DEV)) {
size = snprintf(buf + offset, rem, "<indev>%u</indev>", ifi);
SNPRINTF_FAILURE(size, rem, offset, len);
}
ifi = nfq_get_outdev(tb);
if (ifi && (flags & NFQ_XML_DEV)) {
size = snprintf(buf + offset, rem, "<outdev>%u</outdev>", ifi);
SNPRINTF_FAILURE(size, rem, offset, len);
}
ifi = nfq_get_physindev(tb);
if (ifi && (flags & NFQ_XML_PHYSDEV)) {
size = snprintf(buf + offset, rem,
"<physindev>%u</physindev>", ifi);
SNPRINTF_FAILURE(size, rem, offset, len);
}
ifi = nfq_get_physoutdev(tb);
if (ifi && (flags & NFQ_XML_PHYSDEV)) {
size = snprintf(buf + offset, rem,
"<physoutdev>%u</physoutdev>", ifi);
SNPRINTF_FAILURE(size, rem, offset, len);
}
ret = nfq_get_payload(tb, &data);
if (ret >= 0 && (flags & NFQ_XML_PAYLOAD)) {
int i;
size = snprintf(buf + offset, rem, "<payload>");
SNPRINTF_FAILURE(size, rem, offset, len);
for (i=0; i<ret; i++) {
size = snprintf(buf + offset, rem, "%02x",
data[i] & 0xff);
SNPRINTF_FAILURE(size, rem, offset, len);
}
size = snprintf(buf + offset, rem, "</payload>");
SNPRINTF_FAILURE(size, rem, offset, len);
}
size = snprintf(buf + offset, rem, "</pkt>");
SNPRINTF_FAILURE(size, rem, offset, len);
return len;
}
//------------------------------------------------------
static int sgi_nfqueue_callback(struct nfq_q_handle *myQueue, struct nfgenmsg *msg,
struct nfq_data *pkt, void *cbData)
//-----------------------------------------------------------------------------
{
uint32_t id = 0;
struct nfqnl_msg_packet_hdr *header;
struct nfqnl_msg_packet_hw *macAddr;
MessageDef *message_p;
Gtpv1uTunnelDataReq *data_req_p;
Teid_t local_teid;
u_int32_t verdict;
if ((header = nfq_get_msg_packet_hdr(pkt))) {
id = ntohl(header->packet_id);
SGI_IF_DEBUG("packet_id %u hw_protocol %u hook %u\n", ntohl(header->packet_id), ntohs(header->hw_protocol), header->hook);
}
// The HW address is only fetchable at certain hook points
// LG Warning HW address is src address
macAddr = nfq_get_packet_hw(pkt);
if (macAddr) {
SGI_IF_DEBUG("MAC len %u addr %02X:%02X:%02X:%02X:%02X:%02X\n",
ntohs(macAddr->hw_addrlen),
macAddr->hw_addr[0],
macAddr->hw_addr[1],
macAddr->hw_addr[2],
macAddr->hw_addr[3],
macAddr->hw_addr[4],
macAddr->hw_addr[5]);
} else {
SGI_IF_DEBUG("No MAC addr\n");
}
/*timeval tv;
if (!nfq_get_timestamp(pkt, &tv)) {
cout << "; tstamp " << tv.tv_sec << "." << tv.tv_usec;
} else {
cout << "; no tstamp";
}*/
//cout << "; mark " << nfq_get_nfmark(pkt);
// Print the payload; in copy meta mode, only headers will be included;
// in copy packet mode, whole packet will be returned.
char *pktData;
int len = nfq_get_payload(pkt, &pktData);
// Note that you can also get the physical devices
SGI_IF_DEBUG("pkt id %d recvd: indev %d outdev %d mark %d len %d\n",
id,
nfq_get_indev(pkt),
nfq_get_outdev(pkt),
nfq_get_nfmark(pkt),
len);
//sgi_print_hex_octets((unsigned char *)pktData, len);
message_p = itti_alloc_new_message(TASK_FW_IP, GTPV1U_TUNNEL_DATA_REQ);
if (message_p == NULL) {
return -1;
}
data_req_p = &message_p->ittiMsg.gtpv1uTunnelDataReq;
data_req_p->buffer = malloc(sizeof(uint8_t) * len);
if (data_req_p->buffer == NULL) {
SGI_IF_ERROR("Failed to allocate new buffer\n");
itti_free(ITTI_MSG_ORIGIN_ID(message_p), message_p);
message_p = NULL;
return -1;
} else {
// MAY BE TO BE CHANGED
local_teid = nfq_get_nfmark(pkt);
// if packet is marked, it is a packet going into a EPS bearer
//if (local_teid != 0) {
if (1) {
data_req_p->local_S1u_teid = local_teid;
memcpy(data_req_p->buffer, pktData, len);
data_req_p->length = len;
if (itti_send_msg_to_task(TASK_GTPV1_U, INSTANCE_DEFAULT, message_p) < 0) {
SGI_IF_ERROR("Failed to send message to task\n");
itti_free(ITTI_MSG_ORIGIN_ID(message_p), message_p);
message_p = NULL;
}
verdict = NF_STOLEN;
return nfq_set_verdict(myQueue, id, verdict, 0, NULL);
} else {
verdict = NF_ACCEPT;
return nfq_set_verdict(myQueue, id, verdict, len, pktData);
}
}
return 0;
// end sgi_nfqueue_callback
}
//-----------------------------------------------------------------------------
void* sgi_nf_fw_2_gtpv1u_thread(void *args_p)
//-----------------------------------------------------------------------------
{
struct nfq_handle *nfqHandle;
struct nfq_q_handle *myQueue;
struct nfnl_handle *netlinkHandle;
int fd, res;
volatile sgi_data_t *sgi_data_p;
sgi_data_p = (sgi_data_t*)args_p;
SGI_IF_DEBUG("RX thread on netfilter queue started, operating on Device %s iif %d\n", sgi_data_p->interface_name, sgi_data_p->interface_index);
// Get a queue connection handle from the module
if (!(nfqHandle = nfq_open())) {
SGI_IF_ERROR("Error in nfq_open()");
exit(-1);
}
// Unbind the handler from processing any IP packets
// Not totally sure why this is done, or if it's necessary...
if (nfq_unbind_pf(nfqHandle, PF_INET) < 0) {
SGI_IF_ERROR("Error in nfq_unbind_pf()");
exit(-1);
}
// Bind this handler to process IP packets...
if (nfq_bind_pf(nfqHandle, PF_INET) < 0) {
SGI_IF_ERROR("Error in nfq_bind_pf()");
exit(-1);
}
// Install a callback on queue 1
if (!(myQueue = nfq_create_queue(nfqHandle, 1, &sgi_nfqueue_callback, NULL))) {
SGI_IF_ERROR("Error in nfq_create_queue()");
exit(-1);
}
// Turn on packet copy mode
if (nfq_set_mode(myQueue, NFQNL_COPY_PACKET, 0xffff) < 0) {
SGI_IF_ERROR("Could not set packet copy mode");
exit(-1);
}
netlinkHandle = nfq_nfnlh(nfqHandle);
fd = nfnl_fd(netlinkHandle);
SGI_IF_DEBUG("Waiting for egress packets\n");
sgi_data_p->thread_started = 1;
while ((res = recv(fd, &sgi_data_p->recv_buffer[sizeof(struct ether_header)], SGI_BUFFER_RECV_LEN, 0)) && res >= 0) {
// a callback mechanism is used
// rather than just handling it directly here, but that
// seems to be the convention...
nfq_handle_packet(nfqHandle, &sgi_data_p->recv_buffer[sizeof(struct ether_header)], res);
// end while receiving traffic
}
nfq_destroy_queue(myQueue);
nfq_close(nfqHandle);
return NULL;
}
openair-cn/SGI/sgi_pcap.c deleted 100755 → 0
View file @ 9aa4543a
/*******************************************************************************
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@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file sgi_pcap.c
* \brief
* \author Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#include <string.h>
#include "sgi.h"
//---------------------------------------------------------------------------------------------------------------------
void* sgi_pcap_fw_2_gtpv1u_thread(void* args_p)
{
bpf_u_int32 netaddr = 0, mask = 0; // To store network address and netmask
struct bpf_program filter; // Place to store the BPF filter program
char errbuf[PCAP_ERRBUF_SIZE]; // Error buffer
struct pcap_pkthdr pkthdr; // Packet information (timestamp, size...)
const unsigned char *packet = NULL; // Received raw data
char filter_string[] = "";
sgi_data_t *sgi_data_p;
sgi_data_p = (sgi_data_t*)args_p;
SGI_IF_DEBUG("[PCAP] Device is %s and iif is %d\n", sgi_data_p->interface_name, sgi_data_p->interface_index);
memset(errbuf, 0, PCAP_ERRBUF_SIZE);
sgi_data_p->pcap_descr = pcap_open_live(sgi_data_p->interface_name, SGI_PCAPMAXBYTES2CAPTURE, 0, SGI_PCAPTIMEDELAYKERNEL2USERSPACE, errbuf);
if (sgi_data_p->pcap_descr == NULL)
SGI_IF_ERROR("Error %s", errbuf);
else if (*errbuf)
SGI_IF_WARNING("Warning %s\n", errbuf);
// Look up info from the capture device
if (pcap_lookupnet(sgi_data_p->interface_name, &netaddr, &mask, errbuf) == -1) {
SGI_IF_ERROR("Can't get netmask for device %s\n", sgi_data_p->interface_name);
netaddr = 0;
mask = 0;
pthread_exit(NULL);
}
// Compiles the filter expression into a BPF filter program
if (pcap_compile(sgi_data_p->pcap_descr, &filter, filter_string, 0, mask) == -1) {
SGI_IF_ERROR("Couldn't parse filter : %s\n", pcap_geterr(sgi_data_p->pcap_descr));
pthread_exit(NULL);
}
// Load the filter program into the packet capture device
if (pcap_setfilter(sgi_data_p->pcap_descr, &filter) == -1) {
SGI_IF_ERROR("Couldn't install filter: %s\n", pcap_geterr(sgi_data_p->pcap_descr));
pthread_exit(NULL);
}
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
sgi_data_p->thread_started = 1;
while (1) {
packet = pcap_next(sgi_data_p->pcap_descr, &pkthdr); // Get one packet
if ( ( pkthdr.len > 0 ) && ( packet != NULL ) ) {
sgi_print_hex_octets(packet, pkthdr.len);
if (packet[54] == 0x85) { // case ROUTER SOLICITATION WITH ETHERNET HEADER
}
}
}
pthread_exit(NULL);
}
openair-cn/SGI/sgi_socket.c deleted 100644 → 0
View file @ 9aa4543a
/*******************************************************************************
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@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file sgi_socket.c
* \brief
* \author Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include <fcntl.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/mman.h> //mmap
#include <asm/types.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <linux/if_ether.h>
#include <net/if_arp.h>
#include <linux/if_packet.h>
#include <netinet/in.h>
#include <poll.h>
#include <arpa/inet.h>
#ifndef SGI_UE_ETHER_TRAFFIC
#include <sys/uio.h>
#endif
#include <netinet/ip6.h>
#include <netinet/ip.h>
#include "sgi.h"
#include "intertask_interface.h"
//static char sgi_command_buffer[256];
#define HW_ADDRESS "%02x:%02x:%02x:%02x:%02x:%02x"
#define HW_ADDRESS_FORMAT(iFR) \
(uint8_t)(iFR)[0], \
(uint8_t)(iFR)[1], \
(uint8_t)(iFR)[2], \
(uint8_t)(iFR)[3], \
(uint8_t)(iFR)[4], \
(uint8_t)(iFR)[5]
#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)
struct ipv6hdr {
__u8 priority:4,
version:4;
__u8 flow_lbl[3];
__be16 payload_len;
__u8 nexthdr;
__u8 hop_limit;
struct in6_addr saddr;
struct in6_addr daddr;
};
/// The number of frames in the ring
// This number is not set in stone. Nor are block_size, block_nr or frame_size
#define CONF_RING_FRAMES 128
/// Offset of data from start of frame
#define PKT_OFFSET (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + \
TPACKET_ALIGN(sizeof(struct sockaddr_ll)))
int sgi_create_vlan_interface(char *interface_nameP, int vlan_idP)
{
char vlan_interface_name[IFNAMSIZ];
char command_line[256];
int ret = 0;
ret = sprintf(vlan_interface_name, "%s.%d", interface_nameP, vlan_idP);
if (ret > 0) {
ret = sprintf(command_line, "ifconfig %s down > /dev/null 2>&1", vlan_interface_name);
if (ret > 0) ret = system(command_line);
else return -1;
ret = sprintf(command_line, "vconfig rem %s > /dev/null 2>&1", vlan_interface_name);
if (ret > 0) ret = system(command_line);
else return -1;
ret = sprintf(command_line, "vconfig add %s %d", interface_nameP, vlan_idP);
if (ret > 0) ret = system(command_line);
else return -1;
ret = sprintf(command_line, "ifconfig %s up", vlan_interface_name);
if (ret > 0) ret = system(command_line);
else return -1;
ret = sprintf(command_line, "sync");
if (ret > 0) ret = system(command_line);
else return -1;
//ret = sprintf(command_line, "ip -4 addr add 10.0.%d.2/24 dev %s", vlan_idP+200, vlan_interface_name);
//if (ret > 0) ret = system(command_line); else return -1;
return 0;
} else {
return -1;
}
}
int sgi_create_sockets(sgi_data_t *sgi_data_p)
{
#ifdef SGI_SOCKET_BIND_TO_IF
struct sockaddr_ll socket_address;
char if_name[16];
#endif
#ifdef SGI_MARKING
int value = 0;
const int *val_p=&value;
#endif
#ifdef SGI_PACKET_RX_RING
struct tpacket_req tp;
#endif
uint32_t i = 0;
#ifndef SGI_UE_ETHER_TRAFFIC
FILE *fp = NULL;
char filename[128];
int rc = 0;
char *router_mac_addr = NULL;
int b = 0;
char addr_mac_byte[16];
#endif
if (sgi_data_p == NULL) {
return -1;
}
SGI_IF_DEBUG("Creating sockets for sgi on interface %s\n", sgi_data_p->interface_name);
// qci = 0 is for the default bearers QOS, Non-GBR
/* Create a RAW IP socket and request for all internet IP traffic */
// work
for (i = 0; i < SGI_MAX_EPS_BEARERS_PER_USER; i++) {
sgi_create_vlan_interface(sgi_data_p->interface_name,i+SGI_MIN_EPS_BEARER_ID);
// works also
#if defined SGI_SOCKET_RAW
sgi_data_p->sd[i] = socket(PF_PACKET, SOCK_RAW, htons(IPPROTO_RAW));
#else
#if defined SGI_SOCKET_DGRAM
SGI_IF_DEBUG("Created socket PF_PACKET/SOCK_DGRAM/ETH_P_ALL\n",strerror(errno), errno);
sgi_data_p->sd[i] = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL));
#endif
#endif
//sgi_data_p->sd[i] = socket(AF_INET, SOCK_RAW, ETH_P_IP);
//sgi_data_p->sd[i] = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IP));
if (sgi_data_p->sd[i] < 0) {
SGI_IF_ERROR("Error during socket creation (%s:%d)\n",strerror(errno), errno);
goto error;
}
/* socket options, tell the kernel we provide the IP structure
int one = 1;
const int *val = &one;
if(setsockopt(sgi_data_p->sd[i], IPPROTO_IP, IP_HDRINCL, val, sizeof(one)) < 0)
{
SGI_IF_ERROR("Error during socket setsockopt IP_HDRINCL (%s:%d)\n", strerror(errno), errno);
goto error;
}*/
#ifdef SGI_MARKING
// setting socket option to use MARK value
//value = rab_id + SGI_MIN_EPS_BEARER_ID;
value = 5;
if (setsockopt (sgi_data_p->sd[i], SOL_SOCKET, SO_MARK, val_p, sizeof (value)) < 0) {
SGI_IF_ERROR("error notifying kernel about MARK");
goto error;
}
SGI_IF_DEBUG("Created socket %d for rab_id %d (for any UE context)\n", sgi_data_p->sd[i], value);
#endif
#ifdef SGI_PACKET_RX_RING
// tell kernel to export data through mmap()ped ring
tp.tp_block_size = CONF_RING_FRAMES * getpagesize();
tp.tp_block_nr = 1;
tp.tp_frame_size = getpagesize();
tp.tp_frame_nr = CONF_RING_FRAMES;
if (setsockopt(sgi_data_p->sd[i], SOL_PACKET, PACKET_RX_RING, (void*) &tp, sizeof(tp))) {
SGI_IF_ERROR("setsockopt() ring\n");
goto error;
}
// open ring
sgi_data_p->sock_mmap_ring = mmap(0, tp.tp_block_size * tp.tp_block_nr, PROT_READ | PROT_WRITE, MAP_SHARED, sgi_data_p->sd[i], 0);
if (!sgi_data_p->sock_mmap_ring) {
SGI_IF_ERROR("Failed to mmap socket (%s:%d)\n", strerror(errno), errno);
goto error;
}
/* Setup our ringbuffer */
sgi_data_p->malloc_ring = malloc(tp.tp_frame_nr * sizeof(struct iovec));
for(i=0; i<tp.tp_frame_nr; i++) {
sgi_data_p->malloc_ring[i].iov_base=(void *)((long)sgi_data_p->sock_mmap_ring)+(i*tp.tp_frame_size);
sgi_data_p->malloc_ring[i].iov_len=tp.tp_frame_size;
}
#endif
#ifdef SGI_SOCKET_BIND_TO_IF
sprintf(if_name, "%s.%d",sgi_data_p->interface_name,i+SGI_MIN_EPS_BEARER_ID);
memset(&socket_address, 0, sizeof(struct sockaddr_ll));
socket_address.sll_family = AF_PACKET; //always PF_PACKET
//socket_address.sll_addr = ;// Filled when we want to tx
//socket_address.sll_halen = ;// Filled when we want to tx
//socket_address.sll_family ;// Filled when we want to tx
//socket_address.sll_hatype = ;// Filled when packet received
//socket_address.sll_pkttype = ;// Filled when packet received
sgi_data_p->if_index[i] = if_nametoindex(if_name);
socket_address.sll_ifindex = sgi_data_p->if_index[i];
//LG 2014-11-07socket_address.sll_protocol = htons(ETH_P_IP);/* Protocol phy level */
socket_address.sll_protocol = htons(ETH_P_ALL);
// Now we can bind the socket to send the IP traffic
if (bind(sgi_data_p->sd[i], (struct sockaddr *)&socket_address, sizeof(struct sockaddr_ll)) < 0) {
SGI_IF_ERROR("Bind socket to %s (%s:%d)\n", if_name, strerror(errno), errno);
goto error;
} else {
SGI_IF_DEBUG("Bind EPS bearer ID %d socket %d to %s\n",
i+SGI_MIN_EPS_BEARER_ID, sgi_data_p->sd[i], if_name);
}
#endif
}
#ifndef SGI_SOCKET_DGRAM
if (sprintf(filename, "/sys/class/net/%s/address", sgi_data_p->interface_name) <= 0 ) {
SGI_IF_ERROR("Build of file name /sys/class/net/sgi_if_name/address Failed (%s:%d)\n", strerror(errno), errno);
goto error;
}
fp = fopen(filename, "r");
if (fp) {
rc = fscanf(fp, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
&sgi_data_p->interface_hw_address[0],
&sgi_data_p->interface_hw_address[1],
&sgi_data_p->interface_hw_address[2],
&sgi_data_p->interface_hw_address[3],
&sgi_data_p->interface_hw_address[4],
&sgi_data_p->interface_hw_address[5]);
fclose(fp);
if (rc <= 0) {
SGI_IF_ERROR("ERROR reading %s\n" ,filename);
goto error;
}
} else {
SGI_IF_ERROR("Correct /sys/class/net/sgi_if_name file not found\n");
goto error;
}
memcpy((void*)(&sgi_data_p->eh.ether_shost[0]), (void*)(&sgi_data_p->interface_hw_address[0]), ETH_ALEN);
router_mac_addr = getenv("MAC_ROUTER");
if (router_mac_addr == NULL) {
SGI_IF_ERROR("ERROR getting ENV variable MAC_ROUTER, should be set by start script\n");
goto error;
}
for (b = 0 ; b < 6; b++) {
strncpy(addr_mac_byte, router_mac_addr+2*b, 2);
addr_mac_byte[2] = '\0';
// we can do (unsigned int*) because x86 processors are little-endian
// (done for suppressing a warning)
rc = sscanf ((const char*)addr_mac_byte, "%02x", (uint32_t*)&i);
if (rc < 1) {
SGI_IF_ERROR("Error in converting string MAC_ROUTER address %s in char array\n", router_mac_addr);
goto error;
}
sgi_data_p->eh.ether_dhost[b] = (i & 0x000000FF);
}
SGI_IF_DEBUG("Found MAC address for ROUTER : %02x:%02x:%02x:%02x:%02x:%02x\n",
NMACADDR(sgi_data_p->eh.ether_dhost));
#ifdef VLAN8021Q
sgi_data_p->eh.ether_vlan8021q.vlan_tpid = htons(0x8100);
sgi_data_p->eh.ether_vlan8021q.vlan_tci = htons(0x7000 | 0x0000 | 0x0000);
#endif
SGI_IF_DEBUG("Found MAC address for SGI IF %s: %02x:%02x:%02x:%02x:%02x:%02x\n",
sgi_data_p->interface_name, NMACADDR(sgi_data_p->eh.ether_shost));
#endif
return 0;
error:
SGI_IF_ERROR("ERROR (%s)\n", strerror(errno));
for (i=0; i<SGI_MAX_EPS_BEARERS_PER_USER; i++) {
if (sgi_data_p->sd[i] > 0) {
close(sgi_data_p->sd[i]);
}
sgi_data_p->sd[i] = -1;
}
return -1;
}
#ifdef SGI_UE_ETHER_TRAFFIC
int sgi_send_data(uint8_t *buffer_pP, uint32_t length, sgi_data_t *sgi_data_pP, Teid_t originating_sgw_S1u_teidP)
{
struct ether_header *eh_p = (struct ether_header *) buffer_pP;
struct iphdr *iph_p = NULL;
struct arphdr *arph_p = NULL;
struct ipv6hdr *ip6h_p = NULL;
sgi_teid_mapping_t *mapping_p = NULL;
sgi_addr_mapping_t *addr_mapping_p = NULL;
hashtable_rc_t hash_rc;
struct in6_addr src6_addr; /* source address */
struct in6_addr *src6_addr_p; /* source address */
u_int32_t src4_addr;
if (buffer_pP == NULL) {
SGI_IF_ERROR("sgi_send_data: received bad parameter\n");
return -1;
}
// get IP version of this packet
switch (htons(eh_p->ether_type)) {
//*******************
case ETHERTYPE_IP:
//*******************
iph_p = (struct iphdr *) (buffer_pP + sizeof(struct ether_header));
// The entry should be here but all signalling tied with RRC procedures not finished so
// a data packet can arrive before the MODIFY_BEARER REQUEST
src4_addr = iph_p->saddr;
if (hashtable_get(sgi_data_pP->addr_v4_mapping, src4_addr, (void**)&addr_mapping_p) != HASH_TABLE_OK) {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
if (hash_rc == HASH_TABLE_KEY_NOT_EXISTS) {
SGI_IF_ERROR("%s Error unknown context SGW teid %d\n", __FUNCTION__, originating_sgw_S1u_teidP);
return -1;
} else {
if (mapping_p->is_outgoing_ipv4_packet_seen == 0) {
mapping_p->hw_addrlen = ETH_ALEN; // TO DO
memcpy(mapping_p->ue_mac_addr, eh_p->ether_shost, ETH_ALEN);
mapping_p->is_outgoing_ipv4_packet_seen = 1;
mapping_p->in_add_captured.s_addr = src4_addr;
addr_mapping_p = calloc(1, sizeof(sgi_addr_mapping_t));
memcpy(addr_mapping_p->ue_mac_addr, eh_p->ether_shost, ETH_ALEN);
addr_mapping_p->is_outgoing_packet_seen = 1;
addr_mapping_p->enb_S1U_teid = mapping_p->enb_S1U_teid;
addr_mapping_p->sgw_S1U_teid = originating_sgw_S1u_teidP;
hashtable_insert(sgi_data_pP->addr_v4_mapping, src4_addr, (void*)addr_mapping_p);
SGI_IF_DEBUG("%s ASSOCIATED %d.%d.%d.%d to MAC %02x:%02x:%02x:%02x:%02x:%02x teid %d\n",
__FUNCTION__, NIPADDR(src4_addr), NMACADDR(eh_p->ether_shost), originating_sgw_S1u_teidP);
} else {
SGI_IF_ERROR("Error IPv4 address already registered for teid %d\n", originating_sgw_S1u_teidP);
return -1;
}
}
} else {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
}
break;
//*******************
case ETHERTYPE_ARP:
//*******************
arph_p = (struct arphdr *) (buffer_pP + sizeof(struct ether_header));
// The entry should be here but all signalling tied with RRC procedures not finished so
// a data packet can arrive before the MODIFY_BEARER REQUEST
memcpy(&src4_addr, &((unsigned char*)(&arph_p[1]))[ETH_ALEN], 4);
SGI_IF_ERROR("%s ARP OPCODE %s TARGET IP %d.%d.%d.%d\n", __FUNCTION__, sgi_arpopcode_2_str(ntohl(arph_p->ar_op)), NIPADDR(src4_addr));
if (hashtable_get(sgi_data_pP->addr_v4_mapping, src4_addr, (void**)&addr_mapping_p) != HASH_TABLE_OK) {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
if (hash_rc == HASH_TABLE_KEY_NOT_EXISTS) {
SGI_IF_ERROR("%s Error unknown context SGW teid %d\n", __FUNCTION__, originating_sgw_S1u_teidP);
return -1;
} else {
if (mapping_p->is_outgoing_ipv4_packet_seen == 0) {
mapping_p->hw_addrlen = ETH_ALEN; // TO DO
memcpy(mapping_p->ue_mac_addr, eh_p->ether_shost, ETH_ALEN);
mapping_p->is_outgoing_ipv4_packet_seen = 1;
mapping_p->in_add_captured.s_addr = src4_addr;
addr_mapping_p = calloc(1, sizeof(sgi_addr_mapping_t));
memcpy(addr_mapping_p->ue_mac_addr, eh_p->ether_shost, ETH_ALEN);
addr_mapping_p->is_outgoing_packet_seen = 1;
addr_mapping_p->enb_S1U_teid = mapping_p->enb_S1U_teid;
addr_mapping_p->sgw_S1U_teid = originating_sgw_S1u_teidP;
hashtable_insert(sgi_data_pP->addr_v4_mapping, src4_addr, (void*)addr_mapping_p);
SGI_IF_DEBUG("%s ASSOCIATED %d.%d.%d.%d to MAC %02x:%02x:%02x:%02x:%02x:%02x teid %d\n",
__FUNCTION__, NIPADDR(src4_addr), NMACADDR(eh_p->ether_shost), originating_sgw_S1u_teidP);
} else {
SGI_IF_ERROR("Error IPv4 address already registered for teid %d\n", originating_sgw_S1u_teidP);
return -1;
}
}
} else {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
}
break;
//*******************
case ETHERTYPE_IPV6:
ip6h_p = (struct ipv6hdr *) (buffer_pP + sizeof(struct ether_header));
if (obj_hashtable_get(sgi_data_pP->addr_v6_mapping, &src6_addr, sizeof(struct in6_addr), (void**)&addr_mapping_p) != HASH_TABLE_OK) {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
if (hash_rc == HASH_TABLE_KEY_NOT_EXISTS) {
SGI_IF_ERROR("%s Error unknown context SGW teid %d\n", __FUNCTION__, originating_sgw_S1u_teidP);
return -1;
} else {
if (mapping_p->is_outgoing_ipv6_packet_seen < MAX_DEFINED_IPV6_ADDRESSES_PER_UE) {
mapping_p->hw_addrlen = ETH_ALEN;
memcpy(mapping_p->ue_mac_addr, eh_p->ether_shost, ETH_ALEN);
memcpy(&mapping_p->in6_addr_captured[mapping_p->is_outgoing_ipv6_packet_seen].s6_addr, src6_addr.s6_addr, 16);
mapping_p->is_outgoing_ipv6_packet_seen +=1;
addr_mapping_p = calloc(1, sizeof(sgi_addr_mapping_t));
memcpy(addr_mapping_p->ue_mac_addr, eh_p->ether_shost, ETH_ALEN);
addr_mapping_p->is_outgoing_packet_seen = 1;
addr_mapping_p->enb_S1U_teid = mapping_p->enb_S1U_teid;
addr_mapping_p->sgw_S1U_teid = originating_sgw_S1u_teidP;
src6_addr_p = malloc(sizeof(struct in6_addr));
if (src6_addr_p == NULL) {
return -1;
}
memcpy(src6_addr_p->s6_addr, ip6h_p->saddr.s6_addr, 16);
obj_hashtable_insert(sgi_data_pP->addr_v6_mapping, src6_addr_p,sizeof(struct in6_addr), (void*)addr_mapping_p);
} else {
SGI_IF_ERROR("Error TOO MANY IPv6 address already registered for teid %d\n", originating_sgw_S1u_teidP);
return -1;
}
}
} else {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
}
break;
default:
SGI_IF_WARNING("%s UNHANDLED ETHERTYPE: %X\n", __FUNCTION__, htons(eh_p->ether_type));
break;
}
assert(mapping_p != NULL);
if (send(sgi_data_pP->sd[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID], (void *)buffer_pP, length, 0) < 0) {
SGI_IF_ERROR("Error during send to socket %d bearer id %d : (%s:%d)\n",
sgi_data_pP->sd[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID],
mapping_p->eps_bearer_id,
strerror(errno),
errno);
return -1;
}
return 0;
}
#else
int sgi_send_data(uint8_t *buffer_pP, uint32_t length, sgi_data_t *sgi_data_pP, Teid_t originating_sgw_S1u_teidP)
{
struct iphdr *iph_p = (struct iphdr *) buffer_pP;
struct ipv6hdr *ip6h_p = (struct ipv6hdr *) buffer_pP;
sgi_teid_mapping_t *mapping_p = NULL;
sgi_addr_mapping_t *addr_mapping_p = NULL;
hashtable_rc_t hash_rc;
struct in6_addr src6_addr; /* source address */
struct in6_addr *src6_addr_p; /* source address */
u_int32_t src4_addr;
struct iovec iov[2];
if (buffer_pP == NULL) {
SGI_IF_ERROR("sgi_send_data: received bad parameter\n");
return -1;
}
// get IP version of this packet
switch (iph_p->version) {
//*******************
case 4:
//*******************
// The entry should be here but all signalling tied with RRC procedures not finished so
// a data packet can arrive before the MODIFY_BEARER REQUEST
sgi_data_pP->eh.ether_type = htons(ETHERTYPE_IP);
src4_addr = iph_p->saddr;
if (hashtable_get(sgi_data_pP->addr_v4_mapping, src4_addr, (void**)&addr_mapping_p) != HASH_TABLE_OK) {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
if (hash_rc == HASH_TABLE_KEY_NOT_EXISTS) {
SGI_IF_ERROR("%s Error unknown context SGW teid %d\n", __FUNCTION__, originating_sgw_S1u_teidP);
return -1;
} else {
if (mapping_p->is_outgoing_ipv4_packet_seen == 0) {
mapping_p->hw_addrlen = ETH_ALEN; // TO DO
mapping_p->is_outgoing_ipv4_packet_seen = 1;
mapping_p->in_add_captured.s_addr = src4_addr;
addr_mapping_p = calloc(1, sizeof(sgi_addr_mapping_t));
addr_mapping_p->is_outgoing_packet_seen = 1;
addr_mapping_p->enb_S1U_teid = mapping_p->enb_S1U_teid;
addr_mapping_p->sgw_S1U_teid = originating_sgw_S1u_teidP;
hashtable_insert(sgi_data_pP->addr_v4_mapping, src4_addr, (void*)addr_mapping_p);
SGI_IF_DEBUG("%s ASSOCIATED %d.%d.%d.%d to teid %d\n",
__FUNCTION__, NIPADDR(src4_addr), originating_sgw_S1u_teidP);
} else {
SGI_IF_ERROR("Error IPv4 address already registered for teid %d\n", originating_sgw_S1u_teidP);
return -1;
}
}
} else {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
}
break;
//*******************
case 6:
sgi_data_pP->eh.ether_type = htons(ETHERTYPE_IPV6);
if (obj_hashtable_get(sgi_data_pP->addr_v6_mapping, &src6_addr, sizeof(struct in6_addr), (void**)&addr_mapping_p) != HASH_TABLE_OK) {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
if (hash_rc == HASH_TABLE_KEY_NOT_EXISTS) {
SGI_IF_ERROR("%s Error unknown context SGW teid %d\n", __FUNCTION__, originating_sgw_S1u_teidP);
return -1;
} else {
if (mapping_p->is_outgoing_ipv6_packet_seen < MAX_DEFINED_IPV6_ADDRESSES_PER_UE) {
mapping_p->hw_addrlen = 0;
memcpy(&mapping_p->in6_addr_captured[mapping_p->is_outgoing_ipv6_packet_seen].s6_addr, src6_addr.s6_addr, 16);
mapping_p->is_outgoing_ipv6_packet_seen +=1;
addr_mapping_p = calloc(1, sizeof(sgi_addr_mapping_t));
addr_mapping_p->is_outgoing_packet_seen = 1;
addr_mapping_p->enb_S1U_teid = mapping_p->enb_S1U_teid;
addr_mapping_p->sgw_S1U_teid = originating_sgw_S1u_teidP;
src6_addr_p = malloc(sizeof(struct in6_addr));
if (src6_addr_p == NULL) {
return -1;
}
memcpy(src6_addr_p->s6_addr, ip6h_p->saddr.s6_addr, 16);
obj_hashtable_insert(sgi_data_pP->addr_v6_mapping, src6_addr_p,sizeof(struct in6_addr), (void*)addr_mapping_p);
} else {
SGI_IF_ERROR("Error TOO MANY IPv6 address already registered for teid %d\n", originating_sgw_S1u_teidP);
return -1;
}
}
} else {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
}
break;
default:
SGI_IF_WARNING("%s UNHANDLED IP VERSION: %X\n", __FUNCTION__, iph_p->version);
break;
}
assert(mapping_p != NULL);
iov[0].iov_base = &sgi_data_pP->eh;
iov[0].iov_len = sizeof(sgi_data_pP->eh);
iov[1].iov_base = (void *)buffer_pP;
iov[1].iov_len = length;
#ifdef VLAN8021Q
sgi_data_pP->eh.ether_vlan8021q.vlan_tci = htons(0x7000 | 0x0000 | mapping_p->eps_bearer_id);
#endif
//sgi_print_hex_octets(iov[0].iov_base, iov[0].iov_len);
//sgi_print_hex_octets(iov[1].iov_base, iov[1].iov_len);
if (writev(sgi_data_pP->sd[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID], (const struct iovec *)iov, 2) < 0) {
SGI_IF_ERROR("Error during writev to socket %d bearer id %d : (%s:%d)\n",
sgi_data_pP->sd[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID],
mapping_p->eps_bearer_id,
strerror(errno),
errno);
return -1;
}
/* if (send(sgi_data_pP->sd[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID], (void *)buffer_pP, length, 0) < 0) {
SGI_IF_ERROR("Error during send to socket %d bearer id %d : (%s:%d)\n",
sgi_data_pP->sd[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID],
mapping_p->eps_bearer_id,
strerror(errno),
errno);
return -1;
}
*/
return 0;
}
#endif
int sgi_dgram_send_data(uint8_t *buffer_pP, uint32_t length, sgi_data_t *sgi_data_pP, Teid_t originating_sgw_S1u_teidP)
{
struct iphdr *iph_p = (struct iphdr *) buffer_pP;
struct ipv6hdr *ip6h_p = (struct ipv6hdr *) buffer_pP;
sgi_teid_mapping_t *mapping_p = NULL;
sgi_addr_mapping_t *addr_mapping_p = NULL;
hashtable_rc_t hash_rc;
struct in6_addr src6_addr; /* source address */
struct in6_addr *src6_addr_p; /* source address */
u_int32_t src4_addr;
struct sockaddr_ll device;
if (buffer_pP == NULL) {
SGI_IF_ERROR("sgi_send_data: received bad parameter\n");
return -1;
}
// get IP version of this packet
switch (iph_p->version) {
//*******************
case 4:
//*******************
// The entry should be here but all signalling tied with RRC procedures not finished so
// a data packet can arrive before the MODIFY_BEARER REQUEST
sgi_data_pP->eh.ether_type = htons(ETHERTYPE_IP);
src4_addr = iph_p->saddr;
if (hashtable_get(sgi_data_pP->addr_v4_mapping, src4_addr, (void**)&addr_mapping_p) != HASH_TABLE_OK) {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
if (hash_rc == HASH_TABLE_KEY_NOT_EXISTS) {
SGI_IF_ERROR("%s Error unknown context SGW teid %d\n", __FUNCTION__, originating_sgw_S1u_teidP);
return -1;
} else {
if (mapping_p->is_outgoing_ipv4_packet_seen == 0) {
mapping_p->hw_addrlen = 0; // TO DO
mapping_p->is_outgoing_ipv4_packet_seen = 1;
mapping_p->in_add_captured.s_addr = src4_addr;
addr_mapping_p = calloc(1, sizeof(sgi_addr_mapping_t));
addr_mapping_p->is_outgoing_packet_seen = 1;
addr_mapping_p->enb_S1U_teid = mapping_p->enb_S1U_teid;
addr_mapping_p->sgw_S1U_teid = originating_sgw_S1u_teidP;
hashtable_insert(sgi_data_pP->addr_v4_mapping, src4_addr, (void*)addr_mapping_p);
SGI_IF_DEBUG("%s ASSOCIATED %d.%d.%d.%d to teid %d\n",
__FUNCTION__, NIPADDR(src4_addr), originating_sgw_S1u_teidP);
} else {
SGI_IF_ERROR("Error IPv4 address already registered for teid %d\n", originating_sgw_S1u_teidP);
return -1;
}
}
} else {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
}
break;
//*******************
case 6:
sgi_data_pP->eh.ether_type = htons(ETHERTYPE_IPV6);
if (obj_hashtable_get(sgi_data_pP->addr_v6_mapping, &src6_addr, sizeof(struct in6_addr), (void**)&addr_mapping_p) != HASH_TABLE_OK) {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
if (hash_rc == HASH_TABLE_KEY_NOT_EXISTS) {
SGI_IF_ERROR("%s Error unknown context SGW teid %d\n", __FUNCTION__, originating_sgw_S1u_teidP);
return -1;
} else {
if (mapping_p->is_outgoing_ipv6_packet_seen < MAX_DEFINED_IPV6_ADDRESSES_PER_UE) {
mapping_p->hw_addrlen = 0;
memcpy(&mapping_p->in6_addr_captured[mapping_p->is_outgoing_ipv6_packet_seen].s6_addr, src6_addr.s6_addr, 16);
mapping_p->is_outgoing_ipv6_packet_seen +=1;
addr_mapping_p = calloc(1, sizeof(sgi_addr_mapping_t));
addr_mapping_p->is_outgoing_packet_seen = 1;
addr_mapping_p->enb_S1U_teid = mapping_p->enb_S1U_teid;
addr_mapping_p->sgw_S1U_teid = originating_sgw_S1u_teidP;
src6_addr_p = malloc(sizeof(struct in6_addr));
if (src6_addr_p == NULL) {
return -1;
}
memcpy(src6_addr_p->s6_addr, ip6h_p->saddr.s6_addr, 16);
obj_hashtable_insert(sgi_data_pP->addr_v6_mapping, src6_addr_p,sizeof(struct in6_addr), (void*)addr_mapping_p);
} else {
SGI_IF_ERROR("Error TOO MANY IPv6 address already registered for teid %d\n", originating_sgw_S1u_teidP);
return -1;
}
}
} else {
hash_rc = hashtable_get(sgi_data_pP->teid_mapping, originating_sgw_S1u_teidP, (void**)&mapping_p);
}
break;
default:
SGI_IF_WARNING("%s UNHANDLED IP VERSION: %X\n", __FUNCTION__, iph_p->version);
break;
}
memset(&device, 0, sizeof(device));
device.sll_family = AF_PACKET;
device.sll_protocol = htons(ETH_P_ALL);
device.sll_ifindex = sgi_data_pP->if_index[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID];
if (sendto(sgi_data_pP->sd[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID],
buffer_pP,
length,
0,
(struct sockaddr *) &device,
sizeof (device)) < 0) {
SGI_IF_ERROR("%d Error during send to socket %d bearer id %d : (%s:%d)\n",
__LINE__,
sgi_data_pP->sd[mapping_p->eps_bearer_id - SGI_MIN_EPS_BEARER_ID],
mapping_p->eps_bearer_id,
strerror(errno),
errno);
return -1;
}
return 0;
}
#ifdef SGI_TEST
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ether.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#define SGI_TEST_BUFF_LEN 500
unsigned char sgi_test_tx_buffer[SGI_TEST_BUFF_LEN];
void sgi_test_send_ping(sgi_data_t *sgi_dataP, uint32_t markP, uint64_t src_mac_addrP, uint64_t dst_mac_addrP, char* src_ip_addrP, char* dst_ip_addrP)
{
#ifdef SGI_PF_PACKET
struct ether_header *eh = (struct ether_header *) sgi_test_tx_buffer;
struct iphdr *iph = (struct iphdr *) (sgi_test_tx_buffer + sizeof(struct ether_header));
struct icmphdr *icmp = (struct icmphdr *) (sgi_test_tx_buffer + sizeof(struct ether_header) + sizeof(struct iphdr));
#else
struct iphdr *iph = (struct iphdr *) sgi_test_tx_buffer;
struct icmphdr *icmp = (struct icmphdr *) (sgi_test_tx_buffer + sizeof(struct iphdr));
#endif
struct hostent *hp, *hp2;
struct in_addr ip_dst;
struct in_addr ip_src;
#ifdef SGI_PF_PACKET
eh->ether_shost[0] = (u_int8_t)((src_mac_addrP & 0x0000FF0000000000) >> 40);
eh->ether_shost[1] = (u_int8_t)((src_mac_addrP & 0x000000FF00000000) >> 32);
eh->ether_shost[2] = (u_int8_t)((src_mac_addrP & 0x00000000FF000000) >> 24);
eh->ether_shost[3] = (u_int8_t)((src_mac_addrP & 0x0000000000FF0000) >> 16);
eh->ether_shost[4] = (u_int8_t)((src_mac_addrP & 0x000000000000FF00) >> 8);
eh->ether_shost[5] = (u_int8_t) (src_mac_addrP & 0x00000000000000FF);
eh->ether_dhost[0] = (u_int8_t)((dst_mac_addrP & 0x0000FF0000000000) >> 40);
eh->ether_dhost[1] = (u_int8_t)((dst_mac_addrP & 0x000000FF00000000) >> 32);
eh->ether_dhost[2] = (u_int8_t)((dst_mac_addrP & 0x00000000FF000000) >> 24);
eh->ether_dhost[3] = (u_int8_t)((dst_mac_addrP & 0x0000000000FF0000) >> 16);
eh->ether_dhost[4] = (u_int8_t)((dst_mac_addrP & 0x000000000000FF00) >> 8);
eh->ether_dhost[5] = (u_int8_t) (dst_mac_addrP & 0x00000000000000FF);
eh->ether_type = htons(ETH_P_IP);
#endif
if ((hp = gethostbyname(dst_ip_addrP)) == NULL) {
SGI_IF_DEBUG("gethostbyname() is OK.\n");
if ((ip_dst.s_addr = inet_addr(dst_ip_addrP)) == -1) {
fprintf(stderr, "%s: Can't resolve, unknown host.\n", dst_ip_addrP);
exit(1);
}
} else
bcopy(hp->h_addr_list[0], &ip_dst.s_addr, hp->h_length);
/* The following source address just redundant for target to collect */
if ((hp2 = gethostbyname(src_ip_addrP)) == NULL) {
SGI_IF_DEBUG("gethostbyname() is OK.\n");
if ((ip_src.s_addr = inet_addr(src_ip_addrP)) == -1) {
fprintf(stderr, "%s: Can't resolve, unknown host\n", src_ip_addrP);
exit(1);
}
} else
bcopy(hp2->h_addr_list[0], &ip_src.s_addr, hp->h_length);
printf("Sending to %08X from spoofed %08X\n", ip_dst.s_addr, ip_src.s_addr);
/* Ip structure, check the ip.h */
iph->version = 4;
iph->ihl = sizeof *iph >> 2;
iph->tos = 0;
iph->tot_len = htons(SGI_TEST_BUFF_LEN-sizeof(struct ether_header));
iph->id = htons(4321);
iph->frag_off = htons(0);
iph->ttl = 255;
iph->protocol = IPPROTO_ICMP;
iph->check = htons(0);
iph->saddr = ip_src.s_addr;
iph->daddr = ip_dst.s_addr;
icmp->type = ICMP_ECHO;
icmp->code = 0;
icmp->un.echo.id = 1000;
icmp->un.echo.sequence = 10;
/* Header checksum */
icmp->checksum = 0;
icmp-> checksum = in_cksum((unsigned short *)icmp, sizeof(struct icmphdr));
iph->check = in_cksum((unsigned short *)iph, sizeof(struct iphdr));
/* sending time */
if (send(sgi_dataP->sd[0], sgi_test_tx_buffer, SGI_TEST_BUFF_LEN, 0) < 0) {
SGI_IF_ERROR("sendto() error (%s:%d)\n", strerror(errno), errno);
} else
SGI_IF_DEBUG("sendto() is OK.\n");
}
#endif
#ifdef ENABLE_USE_RAW_SOCKET_FOR_SGI
void sgi_sock_raw_cleanup_handler(void *args_p)
{
sgi_data_t *sgi_data_p;
int socket_index;
sgi_data_p = ((sgi_read_thread_args_t*)args_p)->sgi_data;
socket_index = ((sgi_read_thread_args_t*)args_p)->socket_index;
SGI_IF_DEBUG("Called %s\n", __FUNCTION__);
#ifdef SGI_PACKET_RX_RING
free(sgi_data_p->malloc_ring);
sgi_data_p->malloc_ring = NULL;
if (munmap(sgi_data_p->sock_mmap_ring, CONF_RING_FRAMES * getpagesize())) {
SGI_IF_ERROR("munmap\n");
} else {
sgi_data_p->sock_mmap_ring = NULL;
}
#endif
if (sgi_data_p->sd[socket_index] > 0) {
close(sgi_data_p->sd[socket_index]);
SGI_IF_DEBUG("Closed soket %d\n", sgi_data_p->sd[socket_index]);
}
sgi_data_p->sd[socket_index] = -1;
free(args_p);
}
void* sgi_sock_raw_fw_2_gtpv1u_thread(void* args_p)
{
sgi_data_t *sgi_data_p;
int socket_index;
#ifdef SGI_PACKET_RX_RING
struct pollfd pfd;
int i;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
char *names[]= {
"<", /* incoming */
"B", /* broadcast */
"M", /* multicast */
"P", /* promisc */
">", /* outgoing */
};
#else
int num_bytes;
#endif
sgi_data_p = ((sgi_read_thread_args_t*)args_p)->sgi_data;
socket_index = ((sgi_read_thread_args_t*)args_p)->socket_index;
SGI_IF_DEBUG("RX thread on raw socket started, operating on Device %s.%d\n", sgi_data_p->interface_name, socket_index+SGI_MIN_EPS_BEARER_ID);
pthread_cleanup_push(sgi_sock_raw_cleanup_handler, args_p);
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
pthread_mutex_lock (&sgi_data_p->thread_started_mutex);
sgi_data_p->thread_started += 1;
pthread_mutex_unlock (&sgi_data_p->thread_started_mutex);
#ifdef SGI_PACKET_RX_RING
i = 0;
while (1) {
while(*(unsigned long*)sgi_data_p->malloc_ring[i].iov_base) {
struct tpacket_hdr *h=sgi_data_p->malloc_ring[i].iov_base;
struct sockaddr_ll *sll=(void *)h + TPACKET_ALIGN(sizeof(*h));
unsigned char *bp=(unsigned char *)h + h->tp_mac;
SGI_IF_DEBUG("%u.%.6u: if%u %s %u bytes\n",
h->tp_sec, h->tp_usec,
sll->sll_ifindex,
names[sll->sll_pkttype],
h->tp_len);
sgi_process_raw_packet(sgi_data_p, bp, h->tp_len);
pthread_mutex_lock(&mutex); /* memory barrier */
/* tell the kernel this packet is done with */
h->tp_status=0;
pthread_mutex_unlock(&mutex); /* memory barrier */
i=(i==CONF_RING_FRAMES-1) ? 0 : i+1;
}
/* Sleep when nothings happen */
pfd.fd=sgi_data_p->sd;
pfd.events=POLLIN|POLLERR;
pfd.revents=0;
poll(&pfd, 1, -1);
}
#else
while (1) {
num_bytes = recvfrom(sgi_data_p->sd[socket_index], &sgi_data_p->recv_buffer[0][socket_index], SGI_BUFFER_RECV_LEN, 0, NULL, NULL);
if (num_bytes > 0) {
SGI_IF_DEBUG("recvfrom bearer id %d %d bytes\n", socket_index + SGI_MIN_EPS_BEARER_ID, num_bytes);
#ifdef SGI_SOCKET_RAW
sgi_process_raw_packet(sgi_data_p, &sgi_data_p->recv_buffer[0][socket_index], num_bytes);
#else
#ifdef SGI_SOCKET_DGRAM
sgi_process_dgram_packet(sgi_data_p, &sgi_data_p->recv_buffer[0][socket_index], num_bytes);
#endif
#endif
} else {
SGI_IF_DEBUG("recvfrom bearer id %d %d (%s:%d)\n", socket_index + SGI_MIN_EPS_BEARER_ID, num_bytes, strerror(errno), errno);
}
}
#endif
pthread_cleanup_pop(0);
pthread_exit(NULL);
}
#endif
openair-cn/SGI/sgi_task.c deleted 100644 → 0
View file @ 9aa4543a
/*******************************************************************************
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@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file sgi_task.c
* \brief
* \author Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <net/if.h>
//-----------------------------------------------------------------------------
#include "assertions.h"
#include "mme_config.h"
#include "intertask_interface.h"
#include "sgi.h"
//-----------------------------------------------------------------------------
static void* sgi_task_thread(void *args_p);
static int sgi_create_endpoint_request(sgi_data_t *sgi_dataP, SGICreateEndpointReq *req_p);
static int sgi_update_endpoint_request(sgi_data_t *sgi_dataP, SGIUpdateEndpointReq *req_p);
static int sgi_init_phase2(sgi_data_t *sgi_data_pP);
//-----------------------------------------------------------------------------
static pthread_t fw_2_sgi_task_thread;
//-----------------------------------------------------------------------------
static void* sgi_task_thread(void *args_p)
//-----------------------------------------------------------------------------
{
sgi_data_t *sgi_data_p;
if (args_p == NULL) {
return NULL;
}
itti_mark_task_ready(TASK_FW_IP);
sgi_data_p = (sgi_data_t *)args_p;
while(1) {
/* Trying to fetch a message from the message queue.
* If the queue is empty, this function will block till a
* message is sent to the task.
*/
MessageDef *received_message_p;
itti_receive_msg(TASK_FW_IP, &received_message_p);
DevAssert(received_message_p != NULL);
if (sgi_data_p->hss_associated) {
switch (ITTI_MSG_ID(received_message_p)) {
case GTPV1U_TUNNEL_DATA_IND: {
/* We received data from GTPV1_U incoming from an UE.
* Forward it host adapter.
*/
Gtpv1uTunnelDataInd *data_ind_p;
data_ind_p = &received_message_p->ittiMsg.gtpv1uTunnelDataInd;
#ifdef SGI_SOCKET_RAW
sgi_send_data(&data_ind_p->buffer[data_ind_p->offset], data_ind_p->length, sgi_data_p, data_ind_p->local_S1u_teid);
#else
#ifdef SGI_SOCKET_DGRAM
sgi_dgram_send_data(&data_ind_p->buffer[data_ind_p->offset], data_ind_p->length, sgi_data_p, data_ind_p->local_S1u_teid);
#endif
#endif
/* Buffer is no longer needed, free it */
itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), data_ind_p->buffer);
}
break;
case SGI_CREATE_ENDPOINT_REQUEST: {
SGICreateEndpointReq *req_p;
req_p = &received_message_p->ittiMsg.sgiCreateEndpointReq;
sgi_create_endpoint_request(sgi_data_p, req_p);
}
break;
case SGI_UPDATE_ENDPOINT_REQUEST: {
SGIUpdateEndpointReq *req_p;
req_p = &received_message_p->ittiMsg.sgiUpdateEndpointReq;
sgi_update_endpoint_request(sgi_data_p, req_p);
}
break;
default: {
SGI_IF_ERROR("Unkwnon message ID %d:%s\n",
ITTI_MSG_ID(received_message_p), ITTI_MSG_NAME(received_message_p));
}
break;
}
} else {
switch (ITTI_MSG_ID(received_message_p)) {
case ACTIVATE_MESSAGE: {
sgi_data_p->hss_associated = 1;
#if !defined(ENABLE_USE_GTPU_IN_KERNEL)
SGI_IF_DEBUG("HSS ASSOCIATED, CAN START VLANS (bug in freediameter)");
sgi_init_phase2(sgi_data_p);
#endif
}
break;
default: {
SGI_IF_ERROR("Unkwnon or ignored message ID %d:%s\n",
ITTI_MSG_ID(received_message_p), ITTI_MSG_NAME(received_message_p));
}
break;
}
}
itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), received_message_p);
received_message_p = NULL;
}
return NULL;
}
//------------------------------------------------------
static int sgi_create_endpoint_request(sgi_data_t *sgi_dataP, SGICreateEndpointReq *req_p)
//------------------------------------------------------
{
SGICreateEndpointResp *sgi_create_endpoint_resp_p;
MessageDef *message_p;
sgi_teid_mapping_t *mapping;
SGI_IF_DEBUG("Rx IP_FW_CREATE_SGI_ENDPOINT_REQUEST, Context: S-GW S11 teid %u, S-GW S1U teid %u EPS bearer id %u\n",
req_p->context_teid, req_p->sgw_S1u_teid, req_p->eps_bearer_id);
message_p = itti_alloc_new_message(TASK_FW_IP, SGI_CREATE_ENDPOINT_RESPONSE);
if (message_p == NULL) {
return -1;
}
sgi_create_endpoint_resp_p = &message_p->ittiMsg.sgiCreateEndpointResp;
sgi_create_endpoint_resp_p->context_teid = req_p->context_teid;
sgi_create_endpoint_resp_p->sgw_S1u_teid = req_p->sgw_S1u_teid;
sgi_create_endpoint_resp_p->eps_bearer_id = req_p->eps_bearer_id;
sgi_create_endpoint_resp_p->pdn_type = req_p->pdn_type;
sgi_create_endpoint_resp_p->paa = req_p->paa;
sgi_create_endpoint_resp_p->status = SGI_STATUS_OK;
if (hashtable_is_key_exists(sgi_dataP->teid_mapping, req_p->sgw_S1u_teid) == HASH_TABLE_OK) {
SGI_IF_ERROR("SGI_STATUS_ERROR_CONTEXT_ALREADY_EXIST Context: S11 teid %u\n", req_p->context_teid);
sgi_create_endpoint_resp_p->status = SGI_STATUS_ERROR_CONTEXT_ALREADY_EXIST;
} else {
mapping = malloc(sizeof(sgi_teid_mapping_t));
if (mapping == NULL) {
sgi_create_endpoint_resp_p->status = SGI_STATUS_ERROR_NO_MEMORY_AVAILABLE;
} else {
memset(mapping, 0 , sizeof(sgi_teid_mapping_t));
mapping->eps_bearer_id = req_p->eps_bearer_id;
mapping->enb_S1U_teid = -1;
if (hashtable_insert(sgi_dataP->teid_mapping, req_p->sgw_S1u_teid, mapping) != 0) {
SGI_IF_ERROR("SGI_STATUS_ERROR_SYSTEM_FAILURE Context: S11 teid %u\n", req_p->context_teid);
sgi_create_endpoint_resp_p->status = SGI_STATUS_ERROR_SYSTEM_FAILURE;
free(mapping);
} else {
SGI_IF_ERROR("SGI_STATUS_OK Context: S11 teid %u\n", req_p->context_teid);
sgi_create_endpoint_resp_p->status = SGI_STATUS_OK;
}
}
}
return itti_send_msg_to_task(TASK_SPGW_APP, INSTANCE_DEFAULT, message_p);
}
//------------------------------------------------------
static int sgi_update_endpoint_request(sgi_data_t *sgi_dataP, SGIUpdateEndpointReq *req_p)
//------------------------------------------------------
{
SGIUpdateEndpointResp *sgi_update_endpoint_resp_p = NULL;
MessageDef *message_p = NULL;
sgi_teid_mapping_t *mapping = NULL;
SGI_IF_DEBUG("Rx IP_FW_UPDATE_SGI_ENDPOINT_REQUEST, Context: S-GW S11 teid %u, S-GW S1U teid %u EPS bearer id %u\n",
req_p->context_teid, req_p->sgw_S1u_teid, req_p->eps_bearer_id);
message_p = itti_alloc_new_message(TASK_FW_IP, SGI_UPDATE_ENDPOINT_RESPONSE);
if (message_p == NULL) {
return -1;
}
sgi_update_endpoint_resp_p = &message_p->ittiMsg.sgiUpdateEndpointResp;
sgi_update_endpoint_resp_p->context_teid = req_p->context_teid;
sgi_update_endpoint_resp_p->sgw_S1u_teid = req_p->sgw_S1u_teid;
sgi_update_endpoint_resp_p->eps_bearer_id = req_p->eps_bearer_id;
sgi_update_endpoint_resp_p->enb_S1u_teid = req_p->enb_S1u_teid;
sgi_update_endpoint_resp_p->status = SGI_STATUS_OK;
if (hashtable_get(sgi_dataP->teid_mapping, req_p->sgw_S1u_teid, (void**)&mapping) == HASH_TABLE_OK) {
mapping->enb_S1U_teid = req_p->enb_S1u_teid;
} else {
SGI_IF_ERROR("SGI_STATUS_ERROR_CONTEXT_NOT_FOUND Context: S11 teid %u\n", req_p->context_teid);
sgi_update_endpoint_resp_p->status = SGI_STATUS_ERROR_CONTEXT_NOT_FOUND;
}
return itti_send_msg_to_task(TASK_SPGW_APP, INSTANCE_DEFAULT, message_p);
}
//-----------------------------------------------------------------------------
int sgi_init(const pgw_config_t *pgw_config_p)
//-----------------------------------------------------------------------------
{
volatile sgi_data_t *sgi_data_p;
int len;
int i;
SGI_IF_DEBUG("Initializing FW_IP task interface\n");
sgi_data_p = malloc(sizeof(sgi_data_t));
memset((void *)sgi_data_p, 0, sizeof(sgi_data_t));
for (i=0; i < SGI_MAX_EPS_BEARERS_PER_USER; i++) {
sgi_data_p->sd[i] = -1;
}
sgi_data_p->thread_started = 0;
pthread_mutex_init (&sgi_data_p->thread_started_mutex, NULL);
sgi_data_p->teid_mapping = hashtable_create (SGI_MAX_EPS_BEARERS, NULL, NULL);
if (sgi_data_p->teid_mapping == NULL) {
SGI_IF_ERROR("Failed to create SGI hashtable teid_mapping\n");
return -1;
}
sgi_data_p->addr_v4_mapping = hashtable_create (SGI_MAX_SERVED_USERS_PER_PGW, NULL, NULL);
if (sgi_data_p->addr_v4_mapping == NULL) {
SGI_IF_ERROR("Failed to create SGI hashtable addr_v4_mapping\n");
return -1;
}
sgi_data_p->addr_v6_mapping = obj_hashtable_create (SGI_MAX_SERVED_USERS_PER_PGW, NULL, NULL, NULL);
if (sgi_data_p->addr_v6_mapping == NULL) {
SGI_IF_ERROR("Failed to create SGI hashtable addr_v6_mapping\n");
return -1;
}
len = strlen(pgw_config_p->ipv4.pgw_interface_name_for_SGI);
sgi_data_p->interface_name = calloc(len + 1, sizeof(char));
memcpy(sgi_data_p->interface_name, pgw_config_p->ipv4.pgw_interface_name_for_SGI, len);
sgi_data_p->interface_name[len] = '\0';
sgi_data_p->ipv4_addr = pgw_config_p->ipv4.pgw_ipv4_address_for_SGI;
if (pthread_create(&fw_2_sgi_task_thread, NULL, &sgi_task_thread, (void *)sgi_data_p) < 0) {
SGI_IF_ERROR("sgi_task_thread pthread_create: %s", strerror(errno));
return -1;
}
return 0;
}
int sgi_init_phase2(sgi_data_t *sgi_data_pP)
{
int i;
if (strcmp(sgi_data_pP->interface_name, PGW_CONFIG_STRING_INTERFACE_DISABLED) != 0) {
sgi_data_pP->interface_index = if_nametoindex(sgi_data_pP->interface_name);
if (sgi_create_sockets(sgi_data_pP) < 0) {
SGI_IF_ERROR("Could not create socket, leaving thread %s\n", __FUNCTION__);
free(sgi_data_pP);
return -1;
}
} else {
SGI_IF_WARNING("SGI interface disabled by config file\n");
}
if (strcmp(sgi_data_pP->interface_name, PGW_CONFIG_STRING_INTERFACE_DISABLED) != 0) {
#ifdef ENABLE_USE_PCAP_FOR_SGI
if (pthread_create(&sgi_data_pP->capture_on_sgi_if_thread, NULL, &sgi_pcap_fw_2_gtpv1u_thread, (void *)sgi_data_pP) < 0) {
SGI_IF_ERROR("sgi_pcap_fw_2_gtpv1u_thread pthread_create: %s", strerror(errno));
return -1;
}
#endif
#ifdef ENABLE_USE_NETFILTER_FOR_SGI
if (pthread_create(&sgi_data_pP->capture_on_sgi_if_thread, NULL, &sgi_nf_fw_2_gtpv1u_thread, (void *)sgi_data_pP) < 0) {
SGI_IF_ERROR("sgi_nf_fw_2_gtpv1u_thread pthread_create: %s", strerror(errno));
return -1;
}
#endif
//#if 0
#ifdef ENABLE_USE_RAW_SOCKET_FOR_SGI
for (i=0; i < SGI_MAX_EPS_BEARERS_PER_USER; i++) {
sgi_read_thread_args_t *args_p = malloc(sizeof(sgi_read_thread_args_t));
args_p->sgi_data = sgi_data_pP;
args_p->socket_index = i;
if (pthread_create(&sgi_data_pP->capture_on_sgi_if_thread, NULL, &sgi_sock_raw_fw_2_gtpv1u_thread, (void *)args_p) < 0) {
SGI_IF_ERROR("sgi_sock_raw_fw_2_gtpv1u_thread pthread_create: %s", strerror(errno));
return -1;
}
}
#endif
//#endif
}
while (sgi_data_pP->thread_started != SGI_MAX_EPS_BEARERS_PER_USER ) {
usleep(1000);
}
/*SGI_IF_DEBUG("ARP RESOLVING ROUTER...\n");
while (sgi_data_p->hw_address_of_router_captured == 0) {
sgi_send_arp_request(sgi_data_p, "router.eur");
sleep(2);
}*/
SGI_IF_DEBUG("Initializing FW_IP task interface: DONE\n");
return 0;
}
openair-cn/SGI/sgi_util.c deleted 100755 → 0
View file @ 9aa4543a
/*******************************************************************************
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@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*! \file sgi_util.c
* \brief
* \author Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include "sgi.h"
#define FW_2_PRINT_BUFFER_LEN 10000
static char fw_2_print_buffer[FW_2_PRINT_BUFFER_LEN];
//-----------------------------------------------------------------------------
void sgi_print_hex_octets(unsigned char* dataP, unsigned long sizeP)
//-----------------------------------------------------------------------------
{
unsigned long octet_index = 0;
unsigned long buffer_marker = 0;
unsigned char aindex;
struct timeval tv;
struct timezone tz;
char timeofday[64];
unsigned int h,m,s;
if (dataP == NULL) {
return;
}
gettimeofday(&tv, &tz);
h = (tv.tv_sec/3600) % 24;
m = (tv.tv_sec / 60) % 60;
s = tv.tv_sec % 60;
snprintf(timeofday, 64, "%02d:%02d:%02d.%06d", h,m,s,tv.tv_usec);
SGI_IF_DEBUG("%s------+-------------------------------------------------+\n",timeofday);
SGI_IF_DEBUG("%s | 0 1 2 3 4 5 6 7 8 9 a b c d e f |\n",timeofday);
SGI_IF_DEBUG("%s------+-------------------------------------------------+\n",timeofday);
for (octet_index = 0; octet_index < sizeP; octet_index++) {
if ((octet_index % 16) == 0) {
if (octet_index != 0) {
buffer_marker+=snprintf(&fw_2_print_buffer[buffer_marker], FW_2_PRINT_BUFFER_LEN - buffer_marker, " |\n");
SGI_IF_DEBUG("%s%s",timeofday, fw_2_print_buffer);
buffer_marker = 0;
}
buffer_marker+=snprintf(&fw_2_print_buffer[buffer_marker], FW_2_PRINT_BUFFER_LEN - buffer_marker, " %04ld |", octet_index);
}
/*
* Print every single octet in hexadecimal form
*/
buffer_marker+=snprintf(&fw_2_print_buffer[buffer_marker], FW_2_PRINT_BUFFER_LEN - buffer_marker, " %02x", dataP[octet_index]);
/*
* Align newline and pipes according to the octets in groups of 2
*/
}
/*
* Append enough spaces and put final pipe
*/
for (aindex = octet_index; aindex < 16; ++aindex)
buffer_marker+=snprintf(&fw_2_print_buffer[buffer_marker], FW_2_PRINT_BUFFER_LEN - buffer_marker, " ");
//SGI_IF_DEBUG(" ");
buffer_marker+=snprintf(&fw_2_print_buffer[buffer_marker], FW_2_PRINT_BUFFER_LEN - buffer_marker, " |\n");
SGI_IF_DEBUG("%s%s",timeofday,fw_2_print_buffer);
}
//-----------------------------------------------------------------------------
char* sgi_status_2_str(SGIStatus_t statusP)
//-----------------------------------------------------------------------------
{
switch (statusP) {
case SGI_STATUS_OK:
return "SGI_STATUS_OK";
break;
case SGI_STATUS_ERROR_CONTEXT_ALREADY_EXIST:
return "SGI_STATUS_ERROR_CONTEXT_ALREADY_EXIST";
break;
case SGI_STATUS_ERROR_CONTEXT_NOT_FOUND:
return "SGI_STATUS_ERROR_CONTEXT_NOT_FOUND";
break;
case SGI_STATUS_ERROR_INVALID_MESSAGE_FORMAT:
return "SGI_STATUS_ERROR_INVALID_MESSAGE_FORMAT";
break;
case SGI_STATUS_ERROR_SERVICE_NOT_SUPPORTED:
return "SGI_STATUS_ERROR_SERVICE_NOT_SUPPORTED";
break;
case SGI_STATUS_ERROR_SYSTEM_FAILURE:
return "SGI_STATUS_ERROR_SYSTEM_FAILURE";
break;
case SGI_STATUS_ERROR_NO_RESOURCES_AVAILABLE:
return "SGI_STATUS_ERROR_NO_RESOURCES_AVAILABLE";
break;
case SGI_STATUS_ERROR_NO_MEMORY_AVAILABLE:
return "SGI_STATUS_ERROR_NO_MEMORY_AVAILABLE";
break;
default:
return "UNKNOWN_SGI_STATUS";
}
}
//-----------------------------------------------------------------------------
char* sgi_arpopcode_2_str(unsigned short int opcodeP)
//-----------------------------------------------------------------------------
{
switch (opcodeP) {
case ARPOP_REQUEST:
return "ARPOP_REQUEST";
break;
case ARPOP_REPLY:
return "ARPOP_REPLY";
break;
case ARPOP_RREQUEST:
return "ARPOP_RREQUEST";
break;
case ARPOP_RREPLY:
return "ARPOP_RREPLY";
break;
case ARPOP_InREQUEST:
return "ARPOP_InREQUEST";
break;
case ARPOP_InREPLY:
return "ARPOP_InREPLY";
break;
case ARPOP_NAK:
return "ARPOP_NAK";
break;
default:
return "UNKNOWN_ARP_OPCODE";
}
}
//-----------------------------------------------------------------------------
unsigned short in_cksum(unsigned short *addr, int len)
//-----------------------------------------------------------------------------
{
register int sum = 0;
u_short answer = 0;
register u_short *w = addr;
register int nleft = len;
/*
* Our algorithm is simple, using a 32 bit accumulator (sum), we add
* sequential 16 bit words to it, and at the end, fold back all the
* carry bits from the top 16 bits into the lower 16 bits.
*/
while (nleft > 1) {
sum += *w++;
nleft -= 2;
}
/* mop up an odd byte, if necessary */
if (nleft == 1) {
*(u_char *) (&answer) = *(u_char *) w;
sum += answer;
}
/* add back carry outs from top 16 bits to low 16 bits */
sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */
sum += (sum >> 16); /* add carry */
answer = ~sum; /* truncate to 16 bits */
return (answer);
}
//-----------------------------------------------------------------------------
void sgi_send_arp_request(sgi_data_t *sgi_dataP, char* dst_ip_addrP)
//-----------------------------------------------------------------------------
{
char buffer[100]; // ARP request is 60 bytes including ethernet
struct arphdr_s *arph = (struct arphdr_s *)(buffer);
struct hostent *hp = NULL;
uint32_t i;
struct in_addr ip_dst;
struct ifreq ifr;
struct iovec iov[2];
sgi_dataP->eh.ether_dhost[0] = (u_int8_t)(0xFF);
sgi_dataP->eh.ether_dhost[1] = (u_int8_t)(0xFF);
sgi_dataP->eh.ether_dhost[2] = (u_int8_t)(0xFF);
sgi_dataP->eh.ether_dhost[3] = (u_int8_t)(0xFF);
sgi_dataP->eh.ether_dhost[4] = (u_int8_t)(0xFF);
sgi_dataP->eh.ether_dhost[5] = (u_int8_t)(0xFF);
// get IP address of the default virtual interface
ifr.ifr_addr.sa_family = AF_INET;
sprintf(ifr.ifr_name, "%s.%d",sgi_dataP->interface_name,SGI_MIN_EPS_BEARER_ID);
if (ioctl(sgi_dataP->sd[0], SIOCGIFADDR, &ifr) != 0) {
SGI_IF_ERROR("Error during IP ADDRESS RETRIEVAL ON SGI INTERFACE (%s:%d)\n",strerror(errno), errno);
exit (-1);
}
if ((hp = gethostbyname(dst_ip_addrP)) == NULL) {
SGI_IF_DEBUG("gethostbyname() is OK.\n");
if ((ip_dst.s_addr = inet_addr(dst_ip_addrP)) == -1) {
SGI_IF_ERROR("%s: Can't resolve, unknown host.\n", dst_ip_addrP);
exit(1);
}
} else
bcopy(hp->h_addr_list[0], &ip_dst.s_addr, hp->h_length);
arph->ar_hrd = htons(ARPHRD_ETHER);
arph->ar_pro = htons(ETH_P_IP);
arph->ar_hln = ETH_ALEN;
arph->ar_pln = 4;
arph->ar_op = htons(ARPOP_REQUEST);
// sources
memcpy(arph->ar_sha, sgi_dataP->eh.ether_shost, ETH_ALEN);
i = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
arph->ar_sip[3] = i >> 24;
arph->ar_sip[2] = (i & 0x00FF0000) >> 16;
arph->ar_sip[1] = (i & 0x0000FF00) >> 8;
arph->ar_sip[0] = (i & 0x000000FF);
// destinations
memset(arph->ar_tha, 0, ETH_ALEN);
i = ip_dst.s_addr;
arph->ar_tip[3] = i >> 24;
arph->ar_tip[2] = (i & 0x00FF0000) >> 16;
arph->ar_tip[1] = (i & 0x0000FF00) >> 8;
arph->ar_tip[0] = (i & 0x000000FF);
// save ip address of router for comparing with ARP REPLY
sgi_dataP->ipv4_addr_of_router = ip_dst.s_addr;
iov[0].iov_base = &sgi_dataP->eh;
iov[0].iov_len = sizeof(sgi_dataP->eh);
iov[1].iov_base = (void *)buffer;
iov[1].iov_len = sizeof (struct arphdr) + ETH_ALEN*2 + 4*2;
#ifdef VLAN8021Q
sgi_data_p->eh.ether_vlan8021q.vlan_tpid = htons(0x8100);
sgi_dataP->eh.ether_vlan8021q.vlan_tci = htons(0x7000 | 0x0000 | SGI_MIN_EPS_BEARER_ID);
#endif
sgi_dataP->eh.ether_type = htons(ETH_P_ARP);
sgi_print_hex_octets(iov[0].iov_base, iov[0].iov_len);
sgi_print_hex_octets(iov[1].iov_base, iov[1].iov_len);
if (writev(sgi_dataP->sd[0], (const struct iovec *)&iov, 2) < 0) {
SGI_IF_ERROR("Error during send ARP to socket %d bearer id %d : (%s:%d)\n",
sgi_dataP->sd[0],
SGI_MIN_EPS_BEARER_ID,
strerror(errno),
errno);
exit(1);
}
}
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