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Merge remote-tracking branch 'origin/cleanup_ru_options' into integration_2026_w26

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Cleanup NR RU options (#210)

This PR is part of the effort to split LTE and NR code to avoid
cross-compilation as described in #110.

In nr-ru.c, up to now, we relied on if4_tools.c for some if4p5 functions
but what's in that file is strictly LTE using LTE frame parameters, so
it shouldn't work in NR. As a matter of fact, after some investigation
and feedback from @teodora-vladic about 7.2 split, none of those
functions are used in practice in NR and they can be removed. If this
works, we move one step closer to the full compilation split of LTE and
NR.

Reviewed-by: Robert Schmidt <robert.schmidt@openairinterface.org>
Reviewed-by: Teodora Vladić <teodora.vladic@openairinterface.org>
This commit is contained in:
Robert Schmidt
2026-06-25 13:20:02 +02:00
parent 0548191fac 0f50702483
commit 813a90bd21
2 changed files with 50 additions and 326 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
CMakeLists.txt
View File

@@ -855,7 +855,6 @@ set(NR_PHY_SRC_RU
${OPENAIR1_DIR}/PHY/MODULATION/nr_beamforming.c
${OPENAIR1_DIR}/PHY/MODULATION/slot_fep_nr.c
${OPENAIR1_DIR}/PHY/INIT/nr_init_ru.c
${OPENAIR1_DIR}/PHY/if4_tools.c
)
set(PHY_SRC_UE

375
executables/nr-ru.c
View File

@@ -21,8 +21,6 @@
#include "radio/COMMON/common_lib.h"
#include "radio/ETHERNET/ethernet_lib.h"
#include "PHY/if4_tools.h"
#include "PHY/defs_nr_common.h"
#include "PHY/phy_extern.h"
#include "PHY/NR_TRANSPORT/nr_transport_proto.h"
@@ -76,15 +74,6 @@ void fh_if5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp)
ru->ifdevice.trx_write_func2(&ru->ifdevice, timestamp, buffs, 0, get_samples_per_slot(slot, ru->nr_frame_parms), 0, ru->nb_tx);
}
// southbound IF4p5 fronthaul
void fh_if4p5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp)
{
LOG_D(PHY,"Sending IF4p5 for frame %d subframe %d\n",ru->proc.frame_tx,ru->proc.tti_tx);
if ((nr_slot_select(&ru->config, ru->proc.frame_tx, ru->proc.tti_tx) & NR_DOWNLINK_SLOT) > 0)
send_IF4p5(ru,frame, slot, IF4p5_PDLFFT);
}
/*************************************************************/
/* Input Fronthaul from south RCC/RAU */
@@ -148,196 +137,6 @@ void fh_if5_south_in(RU_t *ru, int *frame, int *tti)
rxmeas.tv_nsec);
}
// Synchronous if4p5 from south
void fh_if4p5_south_in(RU_t *ru,
int *frame,
int *slot) {
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
RU_proc_t *proc = &ru->proc;
int f,sl;
uint16_t packet_type;
uint32_t symbol_number=0;
uint32_t symbol_mask_full=0;
do { // Blocking, we need a timeout on this !!!!!!!!!!!!!!!!!!!!!!!
recv_IF4p5(ru, &f, &sl, &packet_type, &symbol_number);
if (packet_type == IF4p5_PULFFT) proc->symbol_mask[sl] = proc->symbol_mask[sl] | (1<<symbol_number);
else if (packet_type == IF4p5_PULTICK) {
if ((proc->first_rx == 0) && (f != *frame))
LOG_E(PHY, "rx_fh_if4p5: PULTICK received frame %d != expected %d\n", f, *frame);
if ((proc->first_rx == 0) && (sl != *slot))
LOG_E(PHY, "rx_fh_if4p5: PULTICK received subframe %d != expected %d (first_rx %d)\n", sl, *slot, proc->first_rx);
break;
} else if (packet_type == IF4p5_PRACH) {
// nothing in RU for RAU
}
LOG_D(PHY,"rx_fh_if4p5: subframe %d symbol mask %x\n",*slot,proc->symbol_mask[sl]);
} while(proc->symbol_mask[sl] != symbol_mask_full);
//caculate timestamp_rx, timestamp_tx based on frame and subframe
proc->tti_rx = sl;
proc->frame_rx = f;
proc->timestamp_rx = (proc->frame_rx * fp->samples_per_subframe * 10) + get_samples_slot_timestamp(fp, proc->tti_rx);
// proc->timestamp_tx = proc->timestamp_rx + (4*fp->samples_per_subframe);
proc->tti_tx = (sl+ru->sl_ahead)%fp->slots_per_frame;
proc->frame_tx = (sl > (fp->slots_per_frame - 1 - (ru->sl_ahead))) ? (f + 1) & 1023 : f;
if (proc->first_rx == 0) {
if (proc->tti_rx != *slot) {
LOG_E(PHY,"Received Timestamp (IF4p5) doesn't correspond to the time we think it is (proc->tti_rx %d, subframe %d)\n",proc->tti_rx,*slot);
exit_fun("Exiting");
}
if (proc->frame_rx != *frame) {
LOG_E(PHY,"Received Timestamp (IF4p5) doesn't correspond to the time we think it is (proc->frame_rx %d frame %d)\n",proc->frame_rx,*frame);
exit_fun("Exiting");
}
} else {
proc->first_rx = 0;
*frame = proc->frame_rx;
*slot = proc->tti_rx;
}
proc->symbol_mask[proc->tti_rx] = 0;
LOG_D(PHY,"RU %d: fh_if4p5_south_in sleeping ...\n",ru->idx);
}
// asynchronous inbound if4p5 fronthaul from south
void fh_if4p5_south_asynch_in(RU_t *ru,int *frame,int *slot) {
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
RU_proc_t *proc = &ru->proc;
uint16_t packet_type;
uint32_t symbol_number = 0;
uint32_t symbol_mask = (1 << fp->symbols_per_slot) - 1;
uint32_t prach_rx = 0;
do { // Blocking, we need a timeout on this !!!!!!!!!!!!!!!!!!!!!!!
recv_IF4p5(ru, &proc->frame_rx, &proc->tti_rx, &packet_type, &symbol_number);
if (proc->first_rx != 0) {
*frame = proc->frame_rx;
*slot = proc->tti_rx;
proc->first_rx = 0;
} else {
if (proc->frame_rx != *frame) {
LOG_E(PHY,"frame_rx %d is not what we expect %d\n",proc->frame_rx,*frame);
exit_fun("Exiting");
}
if (proc->tti_rx != *slot) {
LOG_E(PHY,"tti_rx %d is not what we expect %d\n",proc->tti_rx,*slot);
exit_fun("Exiting");
}
}
if (packet_type == IF4p5_PULFFT)
symbol_mask &= ~(1 << symbol_number);
else if (packet_type == IF4p5_PRACH)
prach_rx &= ~0x1;
} while (symbol_mask > 0 || prach_rx > 0); // haven't received all PUSCH symbols and PRACH information
}
/*************************************************************/
/* Input Fronthaul from North RRU */
// RRU IF4p5 TX fronthaul receiver. Assumes an if_device on input and if or rf device on output
// receives one subframe's worth of IF4p5 OFDM symbols and OFDM modulates
void fh_if4p5_north_in(RU_t *ru,int *frame,int *slot)
{
uint32_t symbol_number=0;
uint32_t symbol_mask, symbol_mask_full;
uint16_t packet_type;
/// **** incoming IF4p5 from remote RCC/RAU **** ///
symbol_number = 0;
symbol_mask = 0;
symbol_mask_full = (1<<(ru->nr_frame_parms->symbols_per_slot))-1;
do {
recv_IF4p5(ru, frame, slot, &packet_type, &symbol_number);
symbol_mask = symbol_mask | (1<<symbol_number);
} while (symbol_mask != symbol_mask_full);
}
void fh_if5_north_asynch_in(RU_t *ru, int *frame, int *slot)
{
AssertFatal(1 == 0, "Shouldn't get here\n");
}
void fh_if4p5_north_asynch_in(RU_t *ru,int *frame,int *slot) {
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
nfapi_nr_config_request_scf_t *cfg = &ru->config;
RU_proc_t *proc = &ru->proc;
uint16_t packet_type;
uint32_t symbol_mask_full = 0;
int slot_tx,frame_tx;
LOG_D(PHY, "%s(ru:%p frame, subframe)\n", __FUNCTION__, ru);
uint32_t symbol_number = 0;
uint32_t symbol_mask = 0;
// symbol_mask_full = ((subframe_select(fp,*slot) == SF_S) ? (1<<fp->dl_symbols_in_S_subframe) : (1<<fp->symbols_per_slot))-1;
do {
recv_IF4p5(ru, &frame_tx, &slot_tx, &packet_type, &symbol_number);
if (((nr_slot_select(cfg, frame_tx, slot_tx) & NR_DOWNLINK_SLOT) > 0) && (symbol_number == 0))
start_meas(&ru->rx_fhaul);
LOG_D(PHY,"slot %d (%d): frame %d, slot %d, symbol %d\n",
*slot,nr_slot_select(cfg,frame_tx,*slot),frame_tx,slot_tx,symbol_number);
if (proc->first_tx != 0) {
*frame = frame_tx;
*slot = slot_tx;
proc->first_tx = 0;
} else {
AssertFatal(frame_tx == *frame,
"frame_tx %d is not what we expect %d\n",frame_tx,*frame);
AssertFatal(slot_tx == *slot,
"slot_tx %d is not what we expect %d\n",slot_tx,*slot);
}
if (packet_type == IF4p5_PDLFFT) {
symbol_mask = symbol_mask | (1<<symbol_number);
} else
AssertFatal(false, "Illegal IF4p5 packet type (should only be IF4p5_PDLFFT%d\n", packet_type);
} while (symbol_mask != symbol_mask_full);
if ((nr_slot_select(cfg, frame_tx, slot_tx) & NR_DOWNLINK_SLOT) > 0)
stop_meas(&ru->rx_fhaul);
proc->tti_tx = slot_tx;
proc->frame_tx = frame_tx;
if (frame_tx == 0 && slot_tx == 0)
proc->frame_tx_unwrap += 1024;
proc->timestamp_tx =
((uint64_t)frame_tx + proc->frame_tx_unwrap) * fp->samples_per_subframe * 10 + get_samples_slot_timestamp(fp, slot_tx);
LOG_D(PHY, "RU %d/%d TST %lu, frame %d, subframe %d\n", ru->idx, 0, proc->timestamp_tx, frame_tx, slot_tx);
if (ru->feptx_ofdm)
ru->feptx_ofdm(ru, frame_tx, slot_tx);
if (ru->fh_south_out)
ru->fh_south_out(ru, frame_tx, slot_tx, proc->timestamp_tx);
}
void fh_if5_north_out(RU_t *ru)
{
/// **** send_IF5 of rxdata to BBU **** ///
AssertFatal(1 == 0, "Shouldn't get here\n");
}
// RRU IF4p5 northbound interface (RX)
void fh_if4p5_north_out(RU_t *ru)
{
RU_proc_t *proc=&ru->proc;
start_meas(&ru->tx_fhaul);
send_IF4p5(ru, proc->frame_rx, proc->tti_rx, IF4p5_PULFFT);
stop_meas(&ru->tx_fhaul);
}
static void rx_rf(RU_t *ru, int *frame, int *slot)
{
RU_proc_t *proc = &ru->proc;
@@ -833,7 +632,7 @@ void *ru_thread(void *param)
ret = openair0_transport_load(&ru->ifdevice, &ru->openair0_cfg, &ru->eth_params);
AssertFatal(ret == 0, "RU %u: openair0_transport_init() ret %d: cannot initialize transport protocol\n", ru->idx, ret);
if (ru->ifdevice.get_internal_parameter != NULL) {
if (ru->ifdevice.get_internal_parameter) {
/* it seems the device can "overwrite" (request?) to set the callbacks
* for fh_south_in()/fh_south_out() differently */
void *t = ru->ifdevice.get_internal_parameter("fh_if4p5_south_in");
@@ -842,8 +641,6 @@ void *ru_thread(void *param)
t = ru->ifdevice.get_internal_parameter("fh_if4p5_south_out");
if (t != NULL)
ru->fh_south_out = t;
} else {
malloc_IF4p5_buffer(ru);
}
int cpu = sched_getcpu();
@@ -1088,94 +885,59 @@ void set_function_spec_param(RU_t *ru)
switch (ru->if_south) {
case LOCAL_RF: // this is an RU with integrated RF (RRU, gNB)
reset_meas(&ru->rx_fhaul);
if (ru->function == NGFI_RRU_IF5) { // IF5 RRU
ru->do_prach = 0; // no prach processing in RU
ru->fh_north_in = NULL; // no shynchronous incoming fronthaul from north
ru->fh_north_out = fh_if5_north_out; // need only to do send_IF5 reception
ru->fh_south_out = tx_rf; // send output to RF
ru->fh_north_asynch_in = fh_if5_north_asynch_in; // TX packets come asynchronously
ru->feprx = NULL; // nothing (this is a time-domain signal)
ru->feptx_ofdm = NULL; // nothing (this is a time-domain signal)
ru->feptx_prec = NULL; // nothing (this is a time-domain signal)
ru->nr_start_if = nr_start_if; // need to start the if interface for if5
ru->ifdevice.host_type = RRU_HOST;
ru->rfdevice.host_type = RRU_HOST;
ru->ifdevice.eth_params = &ru->eth_params;
reset_meas(&ru->rx_fhaul);
reset_meas(&ru->tx_fhaul);
reset_meas(&ru->compression);
reset_meas(&ru->transport);
} else if (ru->function == NGFI_RRU_IF4p5) {
ru->do_prach = 1; // do part of prach processing in RU
ru->fh_north_in = NULL; // no synchronous incoming fronthaul from north
ru->fh_north_out = fh_if4p5_north_out; // send_IF4p5 on reception
ru->fh_south_out = tx_rf; // send output to RF
ru->fh_north_asynch_in = fh_if4p5_north_asynch_in; // TX packets come asynchronously
ru->feprx = nr_fep_tp; // this is frequency-shift + DFTs
ru->feptx_ofdm = nr_feptx_tp; // this is fep with idft only (no precoding in RRU)
ru->feptx_prec = NULL;
ru->nr_start_if = nr_start_if; // need to start the if interface for if4p5
ru->ifdevice.host_type = RRU_HOST;
ru->rfdevice.host_type = RRU_HOST;
ru->ifdevice.eth_params = &ru->eth_params;
reset_meas(&ru->tx_fhaul);
reset_meas(&ru->compression);
reset_meas(&ru->transport);
} else if (ru->function == gNodeB_3GPP) {
ru->do_prach = 0; // no prach processing in RU
ru->feprx = nr_fep_tp; // this is frequency-shift + DFTs
ru->feptx_ofdm = nr_feptx_tp; // this is fep with idft and precoding
ru->feptx_prec = NULL;
ru->fh_north_in = NULL; // no incoming fronthaul from north
ru->fh_north_out = NULL; // no outgoing fronthaul to north
ru->nr_start_if = NULL; // no if interface
ru->rfdevice.host_type = RAU_HOST;
ru->fh_south_in = rx_rf; // local synchronous RF RX
ru->fh_south_out = tx_rf; // local synchronous RF TX
ru->start_rf = start_rf; // need to start the local RF interface
ru->stop_rf = stop_rf;
ru->start_write_thread = start_write_thread; // starting RF TX in different thread
}
AssertFatal(ru->function == gNodeB_3GPP, "ru->function %d not supported for LOCAL_RF\n", ru->function);
ru->do_prach = 0; // no prach processing in RU
ru->feprx = nr_fep_tp; // this is frequency-shift + DFTs
ru->feptx_ofdm = nr_feptx_tp; // this is fep with idft and precoding
ru->feptx_prec = NULL;
ru->fh_north_in = NULL; // no incoming fronthaul from north
ru->fh_north_out = NULL; // no outgoing fronthaul to north
ru->nr_start_if = NULL; // no if interface
ru->rfdevice.host_type = RAU_HOST;
ru->fh_south_in = rx_rf; // local synchronous RF RX
ru->fh_south_out = tx_rf; // local synchronous RF TX
ru->start_rf = start_rf; // need to start the local RF interface
ru->stop_rf = stop_rf;
ru->start_write_thread = start_write_thread; // starting RF TX in different thread
break;
case REMOTE_IF5: // the remote unit is IF5 RRU
ru->do_prach = 0;
ru->txfh_in_fep = 0;
ru->feprx = nr_fep_tp; // this is frequency-shift + DFTs
ru->feptx_prec = NULL; // need to do transmit Precoding + IDFTs
ru->feptx_ofdm = nr_feptx_tp; // need to do transmit Precoding + IDFTs
ru->fh_south_in = fh_if5_south_in; // synchronous IF5 reception
ru->fh_south_out = (ru->txfh_in_fep>0) ? NULL : fh_if5_south_out; // synchronous IF5 transmission
ru->fh_south_asynch_in = NULL; // no asynchronous UL
ru->start_rf = ru->eth_params.transp_preference == ETH_UDP_IF5_ECPRI_MODE ? start_streaming : NULL;
ru->stop_rf = NULL;
ru->start_write_thread = NULL;
ru->nr_start_if = nr_start_if; // need to start if interface for IF5
ru->ifdevice.host_type = RAU_HOST;
ru->ifdevice.eth_params = &ru->eth_params;
ru->do_prach = 0;
ru->txfh_in_fep = 0;
ru->feprx = nr_fep_tp; // this is frequency-shift + DFTs
ru->feptx_prec = NULL; // need to do transmit Precoding + IDFTs
ru->feptx_ofdm = nr_feptx_tp; // need to do transmit Precoding + IDFTs
ru->fh_south_in = fh_if5_south_in; // synchronous IF5 reception
ru->fh_south_out = (ru->txfh_in_fep > 0) ? NULL : fh_if5_south_out; // synchronous IF5 transmission
ru->fh_south_asynch_in = NULL; // no asynchronous UL
ru->start_rf = ru->eth_params.transp_preference == ETH_UDP_IF5_ECPRI_MODE ? start_streaming : NULL;
ru->stop_rf = NULL;
ru->start_write_thread = NULL;
ru->nr_start_if = nr_start_if; // need to start if interface for IF5
ru->ifdevice.host_type = RAU_HOST;
ru->ifdevice.eth_params = &ru->eth_params;
break;
case REMOTE_IF4p5:
ru->do_prach = 0;
ru->feprx = NULL; // DFTs
ru->feptx_prec = nr_feptx_prec; // Precoding operation
ru->feptx_ofdm = NULL; // no OFDM mod
ru->fh_south_in = fh_if4p5_south_in; // synchronous IF4p5 reception
ru->fh_south_out = fh_if4p5_south_out; // synchronous IF4p5 transmission
ru->fh_south_asynch_in = (ru->if_timing == synch_to_other) ? fh_if4p5_south_in : NULL; // asynchronous UL if synch_to_other
ru->fh_north_out = NULL;
ru->fh_north_asynch_in = NULL;
ru->start_rf = NULL; // no local RF
ru->stop_rf = NULL;
ru->start_write_thread = NULL;
ru->nr_start_if = nr_start_if; // need to start if interface for IF4p5
ru->ifdevice.host_type = RAU_HOST;
ru->ifdevice.eth_params = &ru->eth_params;
ru->do_prach = 0;
ru->feprx = NULL; // DFTs
ru->feptx_prec = nr_feptx_prec; // Precoding operation
ru->feptx_ofdm = NULL; // no OFDM mod
ru->fh_south_in = NULL;
ru->fh_south_out = NULL;
ru->fh_south_asynch_in = NULL;
ru->fh_north_out = NULL;
ru->fh_north_asynch_in = NULL;
ru->start_rf = NULL; // no local RF
ru->stop_rf = NULL;
ru->start_write_thread = NULL;
ru->nr_start_if = nr_start_if; // need to start if interface for IF4p5
ru->ifdevice.host_type = RAU_HOST;
ru->ifdevice.eth_params = &ru->eth_params;
break;
default:
LOG_E(PHY,"RU with invalid or unknown southbound interface type %d\n",ru->if_south);
LOG_E(PHY, "RU with invalid or unknown southbound interface type %d\n", ru->if_south);
break;
} // switch on interface type
}
@@ -1369,47 +1131,14 @@ static void NRRCconfig_RU(configmodule_interface_t *cfg)
ru->openair0_cfg.tune_offset = get_softmodem_params()->tune_offset;
if (strcmp(*param[RU_LOCAL_RF_IDX].strptr, "yes") == 0) {
if (!config_isparamset(param, RU_LOCAL_IF_NAME_IDX)) {
ru->if_south = LOCAL_RF;
ru->function = gNodeB_3GPP;
LOG_D(PHY, "Setting function for RU %d to gNodeB_3GPP\n", j);
} else {
ru->eth_params.local_if_name = strdup(*param[RU_LOCAL_IF_NAME_IDX].strptr);
ru->eth_params.my_addr = strdup(*param[RU_LOCAL_ADDRESS_IDX].strptr);
ru->eth_params.remote_addr = strdup(*param[RU_REMOTE_ADDRESS_IDX].strptr);
ru->eth_params.my_portc = *param[RU_LOCAL_PORTC_IDX].uptr;
ru->eth_params.remote_portc = *param[RU_REMOTE_PORTC_IDX].uptr;
ru->eth_params.my_portd = *param[RU_LOCAL_PORTD_IDX].uptr;
ru->eth_params.remote_portd = *param[RU_REMOTE_PORTD_IDX].uptr;
char *str = *param[RU_TRANSPORT_PREFERENCE_IDX].strptr;
if (strcmp(str, "udp") == 0) {
ru->if_south = LOCAL_RF;
ru->function = NGFI_RRU_IF5;
ru->eth_params.transp_preference = ETH_UDP_MODE;
LOG_D(PHY, "Setting function for RU %d to NGFI_RRU_IF5 (udp)\n", j);
} else if (strcmp(str, "raw") == 0) {
ru->if_south = LOCAL_RF;
ru->function = NGFI_RRU_IF5;
ru->eth_params.transp_preference = ETH_RAW_MODE;
LOG_D(PHY, "Setting function for RU %d to NGFI_RRU_IF5 (raw)\n", j);
} else if (strcmp(str, "udp_if4p5") == 0) {
ru->if_south = LOCAL_RF;
ru->function = NGFI_RRU_IF4p5;
ru->eth_params.transp_preference = ETH_UDP_IF4p5_MODE;
LOG_D(PHY, "Setting function for RU %d to NGFI_RRU_IF4p5 (udp)\n", j);
} else if (strcmp(str, "raw_if4p5") == 0) {
ru->if_south = LOCAL_RF;
ru->function = NGFI_RRU_IF4p5;
ru->eth_params.transp_preference = ETH_RAW_IF4p5_MODE;
LOG_D(PHY, "Setting function for RU %d to NGFI_RRU_IF4p5 (raw)\n", j);
}
}
AssertFatal(!config_isparamset(param, RU_LOCAL_IF_NAME_IDX), "RU_TRANSPORT_PREFERENCE not supported for local RF\n");
ru->if_south = LOCAL_RF;
ru->function = gNodeB_3GPP;
LOG_D(PHY, "Setting function for RU %d to gNodeB_3GPP\n", j);
ru->max_pdschReferenceSignalPower = *param[RU_MAX_RS_EPRE_IDX].uptr;
ru->max_rxgain = *param[RU_MAX_RXGAIN_IDX].uptr;
ru->sf_extension = *param[RU_SF_EXTENSION_IDX].uptr;
} // strcmp(local_rf, "yes") == 0
else {
} else { // strcmp(local_rf, "yes") == 0
char *str = *param[RU_TRANSPORT_PREFERENCE_IDX].strptr;
LOG_D(PHY, "RU %d: Transport %s\n", j, str);
ru->eth_params.local_if_name = strdup(*param[RU_LOCAL_IF_NAME_IDX].strptr);
@@ -1432,10 +1161,6 @@ static void NRRCconfig_RU(configmodule_interface_t *cfg)
ru->if_south = REMOTE_IF5;
ru->function = NGFI_RAU_IF5;
ru->eth_params.transp_preference = ETH_RAW_MODE;
} else if (strcmp(str, "udp_if4p5") == 0) {
ru->if_south = REMOTE_IF4p5;
ru->function = NGFI_RAU_IF4p5;
ru->eth_params.transp_preference = ETH_UDP_IF4p5_MODE;
} else if (strcmp(str, "raw_if4p5") == 0) {
ru->if_south = REMOTE_IF4p5;
ru->function = NGFI_RAU_IF4p5;