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nas_config(): change API to handle both IPv4 and IPv6

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Implement handling of IPv4 and IPv6 (on the same interface) in
nas_config().
This commit is contained in:
Robert Schmidt
2024-08-02 15:30:15 +02:00
parent ffcf53fc75
commit ae5702d014
8 changed files with 71 additions and 28 deletions
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openair2/RRC/LTE/rrc_UE.c
+1 -1
View File
@@ -771,7 +771,7 @@ rrc_ue_establish_drb(
"10.0.%d.%d",
UE_NAS_USE_TUN ? 1 : (ip_addr_offset3 + ue_mod_idP + 1),
ip_addr_offset4 + ue_mod_idP + 1);
oip_ifup = nas_config(ip_addr_offset3 + ue_mod_idP + 1, ip, "oaitun_oip");
oip_ifup = nas_config(ip_addr_offset3 + ue_mod_idP + 1, ip, NULL, "oaitun_oip");
if (oip_ifup == 0 && (!UE_NAS_USE_TUN)) { // interface is up --> send a config the DRB
LOG_I(OIP,"[UE %d] Config the ue net interface %d to send/receive pkt on DRB %ld to/from the protocol stack\n",
openair2/RRC/LTE/rrc_eNB.c
+1 -1
View File
@@ -5257,7 +5257,7 @@ rrc_eNB_process_RRCConnectionReconfigurationComplete(
ctxt_pP->module_id);
char ip[20];
snprintf(ip, sizeof(ip), "10.0.%d.%d", ctxt_pP->module_id + 1, ctxt_pP->module_id + 1);
oip_ifup = nas_config(ctxt_pP->module_id, ip, "oaitun_oai");
oip_ifup = nas_config(ctxt_pP->module_id, ip, NULL, "oaitun_oai");
if (oip_ifup == 0) { // interface is up --> send a config the DRB
module_id_t ue_module_id;
openair2/RRC/NAS/nas_config.c
+56 -13
View File
@@ -26,6 +26,7 @@
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <linux/ipv6.h>
#include "nas_config.h"
#include "common/utils/LOG/log.h"
@@ -40,17 +41,42 @@
* (set flags)
* \return true on success, false otherwise
*/
static bool setInterfaceParameter(int sock_fd, const char *ifn, const char *if_addr, int operation)
static bool setInterfaceParameter(int sock_fd, const char *ifn, int af, const char *if_addr, int operation)
{
DevAssert(af == AF_INET || af == AF_INET6);
struct ifreq ifr = {0};
strncpy(ifr.ifr_name, ifn, sizeof(ifr.ifr_name));
struct in6_ifreq ifr6 = {0};
struct sockaddr_in addr = {.sin_family = AF_INET};
inet_aton(if_addr, &addr.sin_addr);
//inet_pton(AF_INET6 or AF_INET)
memcpy(&ifr.ifr_ifru.ifru_addr,&addr,sizeof(struct sockaddr_in));
void *ioctl_opt = NULL;
if (af == AF_INET) {
struct sockaddr_in addr = {.sin_family = AF_INET};
int ret = inet_pton(af, if_addr, &addr.sin_addr);
if (ret != 1) {
LOG_E(OIP, "inet_pton(): cannot convert %s to IPv4 network address\n", if_addr);
return false;
}
memcpy(&ifr.ifr_ifru.ifru_addr,&addr,sizeof(struct sockaddr_in));
ioctl_opt = &ifr;
} else {
struct sockaddr_in6 addr6 = {.sin6_family = AF_INET6};
int ret = inet_pton(af, if_addr, &addr6.sin6_addr);
if (ret != 1) {
LOG_E(OIP, "inet_pton(): cannot convert %s to IPv6 network address\n", if_addr);
return false;
}
memcpy(&ifr6.ifr6_addr, &addr6.sin6_addr, sizeof(struct in6_addr));
// we need to get the if index to put it into ifr6
if (ioctl(sock_fd, SIOGIFINDEX, &ifr) < 0) {
LOG_E(OIP, "ioctl() failed: errno %d, %s\n", errno, strerror(errno));
return false;
}
ifr6.ifr6_ifindex = ifr.ifr_ifindex;
ifr6.ifr6_prefixlen = 64;
ioctl_opt = &ifr6;
}
bool success = ioctl(sock_fd,operation,&ifr) == 0;
bool success = ioctl(sock_fd, operation, ioctl_opt) == 0;
if (!success)
LOG_E(OIP, "Setting operation %d for %s: ioctl call failed: %d, %s\n", operation, ifn, errno, strerror(errno));
return success;
@@ -80,11 +106,13 @@ static bool change_interface_state(int sock_fd, const char *ifn, if_action_t if_
}
// non blocking full configuration of the interface (address, and the two lest octets of the address)
bool nas_config(int interface_id, const char *ip, const char *ifpref)
bool nas_config(int interface_id, const char *ipv4, const char *ipv6, const char *ifpref)
{
char interfaceName[IFNAMSIZ];
snprintf(interfaceName, sizeof(interfaceName), "%s%d", ifpref, interface_id);
AssertFatal(ipv4 != NULL || ipv6 != NULL, "need to have IP address, but none given\n");
int sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
if (sock_fd < 0) {
LOG_E(UTIL, "Failed creating socket for interface management: %d, %s\n", errno, strerror(errno));
@@ -92,18 +120,33 @@ bool nas_config(int interface_id, const char *ip, const char *ifpref)
}
change_interface_state(sock_fd, interfaceName, INTERFACE_DOWN);
bool success = setInterfaceParameter(sock_fd, interfaceName, ip, SIOCSIFADDR);
// set the machine network mask
if (success)
success = setInterfaceParameter(sock_fd, interfaceName, "255.255.255.0", SIOCSIFNETMASK);
bool success = true;
if (ipv4 != NULL)
success = setInterfaceParameter(sock_fd, interfaceName, AF_INET, ipv4, SIOCSIFADDR);
// set the machine network mask for IPv4
if (success && ipv4 != NULL)
success = setInterfaceParameter(sock_fd, interfaceName, AF_INET, "255.255.255.0", SIOCSIFNETMASK);
if (ipv6 != NULL) {
// for setting the IPv6 address, we need an IPv6 socket. For setting IPv4,
// we need an IPv4 socket. So do all operations using IPv4 socket, except
// for setting the IPv6
int sock_fd = socket(AF_INET6, SOCK_DGRAM, 0);
if (sock_fd < 0) {
LOG_E(UTIL, "Failed creating socket for interface management: %d, %s\n", errno, strerror(errno));
success = false;
}
success = success && setInterfaceParameter(sock_fd, interfaceName, AF_INET6, ipv6, SIOCSIFADDR);
close(sock_fd);
}
if (success)
success = change_interface_state(sock_fd, interfaceName, INTERFACE_UP);
if (success)
LOG_I(OIP, "Interface %s successfully configured, ip address %s\n", interfaceName, ip);
LOG_I(OIP, "Interface %s successfully configured, IPv4 %s, IPv6 %s\n", interfaceName, ipv4, ipv6);
else
LOG_E(OIP, "Interface %s couldn't be configured (ip address %s)\n", interfaceName, ip);
LOG_E(OIP, "Interface %s couldn't be configured (IPv4 %s, IPv6 %s)\n", interfaceName, ipv4, ipv6);
close(sock_fd);
return success;
openair2/RRC/NAS/nas_config.h
+3 -3
View File
@@ -23,7 +23,6 @@
#define NAS_CONFIG_H_
#include <stdbool.h>
#include <netinet/in.h>
/*! \fn int nas_config(char*, int, int)
* \brief This function initializes the nasmesh interface using the basic values,
@@ -31,14 +30,15 @@
* ones
* \param[in] interface_id number of this interface, prepended after interface
* name
* \param[in] ip IPv4 address of this interface as a string
* \param[in] ipv4 IPv4 address of this interface as a string
* \param[in] ipv6 IPv6 address of this interface as a string
* \param[in] ifprefix interface name prefix to which an interface number will
* be appended
* \return true on success, otherwise false
* \note
* @ingroup _nas
*/
bool nas_config(int interface_id, const char *ip, const char *ifprefix);
bool nas_config(int interface_id, const char *ipv4, const char *ipv6, const char *ifprefix);
/*!
* \brief Setup a IPv4 rule in table (interface_id - 1 + 10000) and route to