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Set up 4G UE addr via nas_config()

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This commit is contained in:
Robert Schmidt
2024-08-02 15:31:04 +02:00
parent 2e804f53c0
commit 3a99fb8293
1 changed files with 9 additions and 138 deletions
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openair3/NAS/UE/ESM/esm_ebr_context.c
+9 -138
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@@ -45,6 +45,7 @@ Description Defines functions used to handle EPS bearer contexts.
#include "esm_ebr.h"
#include "esm_ebr_context.h"
#include "openair2/RRC/NAS/nas_config.h"
#include "emm_sap.h"
#include "system.h"
@@ -194,15 +195,6 @@ int esm_ebr_context_create(
// LG ADD TEMP
{
char *tmp = NULL;
char ipv4_addr[INET_ADDRSTRLEN];
//char ipv6_addr[INET6_ADDRSTRLEN];
int netmask = 32;
char broadcast[INET_ADDRSTRLEN];
struct in_addr in_addr;
char command_line[500];
int res = -1;
switch (pdn->type) {
case NET_PDN_TYPE_IPV4V6:
@@ -210,135 +202,14 @@ int esm_ebr_context_create(
/* TODO? */
// etc
case NET_PDN_TYPE_IPV4:
// in_addr is in network byte order
in_addr.s_addr = pdn->ip_addr[0] << 24 |
((pdn->ip_addr[1] << 16) & 0x00FF0000) |
((pdn->ip_addr[2] << 8) & 0x0000FF00) |
( pdn->ip_addr[3] & 0x000000FF);
in_addr.s_addr = htonl(in_addr.s_addr);
tmp = inet_ntoa(in_addr);
//AssertFatal(tmp ,
// "error in PDN IPv4 address %x",
// in_addr.s_addr);
strcpy(ipv4_addr, tmp);
if (IN_CLASSA(ntohl(in_addr.s_addr))) {
netmask = 8;
in_addr.s_addr = pdn->ip_addr[0] << 24 |
((255 << 16) & 0x00FF0000) |
((255 << 8) & 0x0000FF00) |
( 255 & 0x000000FF);
in_addr.s_addr = htonl(in_addr.s_addr);
tmp = inet_ntoa(in_addr);
// AssertFatal(tmp ,
// "error in PDN IPv4 address %x",
// in_addr.s_addr);
strcpy(broadcast, tmp);
} else if (IN_CLASSB(ntohl(in_addr.s_addr))) {
netmask = 16;
in_addr.s_addr = pdn->ip_addr[0] << 24 |
((pdn->ip_addr[1] << 16) & 0x00FF0000) |
((255 << 8) & 0x0000FF00) |
( 255 & 0x000000FF);
in_addr.s_addr = htonl(in_addr.s_addr);
tmp = inet_ntoa(in_addr);
// AssertFatal(tmp ,
// "error in PDN IPv4 address %x",
// in_addr.s_addr);
strcpy(broadcast, tmp);
} else if (IN_CLASSC(ntohl(in_addr.s_addr))) {
netmask = 24;
in_addr.s_addr = pdn->ip_addr[0] << 24 |
((pdn->ip_addr[1] << 16) & 0x00FF0000) |
((pdn->ip_addr[2] << 8) & 0x0000FF00) |
( 255 & 0x000000FF);
in_addr.s_addr = htonl(in_addr.s_addr);
tmp = inet_ntoa(in_addr);
// AssertFatal(tmp ,
// "error in PDN IPv4 address %x",
// in_addr.s_addr);
strcpy(broadcast, tmp);
} else {
netmask = 32;
strcpy(broadcast, ipv4_addr);
}
LOG_D(NAS, "setting commandline string: "
"ip address add %s/%d broadcast %s dev %s%d && "
"ip link set %s%d up && "
"ip rule add from %s/32 table %d && "
"ip rule add to %s/32 table %d && "
"ip route add default dev %s%d table %d",
ipv4_addr, netmask, broadcast,
UE_NAS_USE_TUN ? "oaitun_ue" : "oip", ueid + 1,
UE_NAS_USE_TUN ? "oaitun_ue" : "oip", ueid + 1,
ipv4_addr, ueid + 10000,
ipv4_addr, ueid + 10000,
UE_NAS_USE_TUN ? "oaitun_ue" : "oip",
ueid + 1, ueid + 10000);
if (!get_softmodem_params()->nsa)
{
res = sprintf(command_line,
"ip address add %s/%d broadcast %s dev %s%d && "
"ip link set %s%d up && "
"ip rule add from %s/32 table %d && "
"ip rule add to %s/32 table %d && "
"ip route add default dev %s%d table %d",
ipv4_addr, netmask, broadcast,
UE_NAS_USE_TUN ? "oaitun_ue" : "oip", ueid + 1,
UE_NAS_USE_TUN ? "oaitun_ue" : "oip", ueid + 1,
ipv4_addr, ueid + 10000,
ipv4_addr, ueid + 10000,
UE_NAS_USE_TUN ? "oaitun_ue" : "oip",
ueid + 1, ueid + 10000);
if ( res<0 ) {
LOG_TRACE(WARNING, "ESM-PROC - Failed to system command string");
}
/* Calling system() here disrupts UE's realtime processing in some cases.
* This may be because of the call to fork(), which, for some
* unidentified reason, interacts badly with other (realtime) threads.
* background_system() is a replacement mechanism relying on a
* background process that does the system() and reports result to
* the parent process (lte-softmodem, oaisim, ...). The background
* process is created very early in the life of the parent process.
* The processes interact through standard pipes. See
* common/utils/system.c for details.
*/
LOG_TRACE(INFO, "ESM-PROC - executing %s ",
command_line);
if (background_system(command_line) != 0)
{
LOG_TRACE(ERROR, "ESM-PROC - failed command '%s'", command_line);
}
}
else if (get_softmodem_params()->nsa) {
res = sprintf(command_line,
"ip address add %s/%d broadcast %s dev %s%d && "
"ip link set %s%d up && "
"ip rule add from %s/32 table %d && "
"ip rule add to %s/32 table %d && "
"ip route add default dev %s%d table %d",
ipv4_addr, netmask, broadcast,
UE_NAS_USE_TUN ? "oaitun_nru" : "oip", ueid + 1,
UE_NAS_USE_TUN ? "oaitun_nru" : "oip", ueid + 1,
ipv4_addr, ueid + 10000,
ipv4_addr, ueid + 10000,
UE_NAS_USE_TUN ? "oaitun_nru" : "oip",
ueid + 1, ueid + 10000);
if ( res<0 ) {
LOG_TRACE(WARNING, "ESM-PROC - Failed to system command string");
}
LOG_D(NAS, "Sending NAS_OAI_TUN_NSA msg to LTE UE via itti\n");
MessageDef *msg_p = itti_alloc_new_message(TASK_NAS_UE, 0, NAS_OAI_TUN_NSA);
memcpy(NAS_OAI_TUN_NSA(msg_p).buffer, command_line, sizeof(NAS_OAI_TUN_NSA(msg_p).buffer));
itti_send_msg_to_task(TASK_RRC_UE, 0, msg_p);
}
break;
case NET_PDN_TYPE_IPV4: {
char ip[20];
char *ip_addr = pdn->ip_addr;
snprintf(ip, sizeof(ip), "%d.%d.%d.%d", ip_addr[0], ip_addr[1], ip_addr[2], ip_addr[3]);
const char *ifn = get_softmodem_params()->nsa ? "oaitun_nru" : "oaitun_ue";
nas_config(1, ip, NULL, ifn);
setup_ue_ipv4_route(1, ip, ifn);
} break;
case NET_PDN_TYPE_IPV6:
break;