Skip to content

O
OpenXG-RAN
Commit eb9d37f6 authored by Raymond Knopp's avatar Raymond Knopp
Browse files
Options

Merge branch 'NR_RRCConfiguration' of... 

Merge branch 'NR_RRCConfiguration' of https://gitlab.eurecom.fr/oai/openairinterface5g into NR_RRCConfiguration
parents b232be94 85176d72
Show whitespace changes
Inline Side-by-side
Showing with 183 additions and 16 deletions
executables/nr-softmodem.h
View file @ eb9d37f6
...@@ -7,7 +7,7 @@ ...@@ -7,7 +7,7 @@
#include "PHY/defs_gNB.h" #include "PHY/defs_gNB.h"
#include "proto_agent.h" #include "proto_agent.h"
#define DEFAULT_DLF 0 #define DEFAULT_DLF 2680000000
/***************************************************************************************************************************************/ /***************************************************************************************************************************************/
/* command line options definitions, CMDLINE_XXXX_DESC macros are used to initialize paramdef_t arrays which are then used as argument /* command line options definitions, CMDLINE_XXXX_DESC macros are used to initialize paramdef_t arrays which are then used as argument
......
executables/softmodem-common.h
View file @ eb9d37f6
...@@ -100,7 +100,7 @@ extern "C" ...@@ -100,7 +100,7 @@ extern "C"
#define DEFAULT_RFCONFIG_FILE "/usr/local/etc/syriq/ue.band7.tm1.PRB100.NR40.dat"; #define DEFAULT_RFCONFIG_FILE "/usr/local/etc/syriq/ue.band7.tm1.PRB100.NR40.dat";
#define DEFAULT_DLF 0 #define DEFAULT_DLF 2680000000
#define CMDLINE_PARAMS_DESC { \ #define CMDLINE_PARAMS_DESC { \
{"rf-config-file", CONFIG_HLP_RFCFGF, 0, strptr:(char **)&RF_CONFIG_FILE, defstrval:NULL, TYPE_STRING, sizeof(RF_CONFIG_FILE)},\ {"rf-config-file", CONFIG_HLP_RFCFGF, 0, strptr:(char **)&RF_CONFIG_FILE, defstrval:NULL, TYPE_STRING, sizeof(RF_CONFIG_FILE)},\
......
openair2/RRC/LTE/MESSAGES/asn1_msg.c
View file @ eb9d37f6
...@@ -3510,8 +3510,6 @@ uint8_t do_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP, ...@@ -3510,8 +3510,6 @@ uint8_t do_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP,
{ {
LTE_DL_DCCH_Message_t dl_dcch_msg; LTE_DL_DCCH_Message_t dl_dcch_msg;
LTE_RAT_Type_t rat=LTE_RAT_Type_eutra; LTE_RAT_Type_t rat=LTE_RAT_Type_eutra;
LTE_RAT_Type_t rat_nr=LTE_RAT_Type_nr;
LTE_RAT_Type_t rat_eutra_nr=LTE_RAT_Type_eutra_nr;
asn_enc_rval_t enc_rval; asn_enc_rval_t enc_rval;
memset(&dl_dcch_msg,0,sizeof(LTE_DL_DCCH_Message_t)); memset(&dl_dcch_msg,0,sizeof(LTE_DL_DCCH_Message_t));
dl_dcch_msg.message.present = LTE_DL_DCCH_MessageType_PR_c1; dl_dcch_msg.message.present = LTE_DL_DCCH_MessageType_PR_c1;
...@@ -3523,6 +3521,57 @@ uint8_t do_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP, ...@@ -3523,6 +3521,57 @@ uint8_t do_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP,
dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list.count=0; dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list.count=0;
ASN_SEQUENCE_ADD(&dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list, ASN_SEQUENCE_ADD(&dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list,
&rat); &rat);
if ( LOG_DEBUGFLAG(DEBUG_ASN1) ) {
xer_fprint(stdout, &asn_DEF_LTE_DL_DCCH_Message, (void *)&dl_dcch_msg);
}
enc_rval = uper_encode_to_buffer(&asn_DEF_LTE_DL_DCCH_Message,
NULL,
(void *)&dl_dcch_msg,
buffer,
100);
if(enc_rval.encoded == -1) {
LOG_I(RRC, "[eNB AssertFatal]ASN1 message encoding failed (%s, %lu)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
return -1;
}
LOG_D(RRC,"[eNB %d] UECapabilityRequest for UE %x Encoded %zd bits (%zd bytes)\n",
ctxt_pP->module_id,
ctxt_pP->rnti,
enc_rval.encoded,
(enc_rval.encoded+7)/8);
if (enc_rval.encoded==-1) {
LOG_E(RRC,"[eNB %d] ASN1 : UECapabilityRequest encoding failed for UE %x\n",
ctxt_pP->module_id,
ctxt_pP->rnti);
return(-1);
}
return((enc_rval.encoded+7)/8);
}
//------------------------------------------------------------------------------
uint8_t do_NR_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP,
uint8_t *const buffer,
const uint8_t Transaction_id)
//------------------------------------------------------------------------------
{
LTE_DL_DCCH_Message_t dl_dcch_msg;
LTE_RAT_Type_t rat_nr=LTE_RAT_Type_nr;
LTE_RAT_Type_t rat_eutra_nr=LTE_RAT_Type_eutra_nr;
asn_enc_rval_t enc_rval;
memset(&dl_dcch_msg,0,sizeof(LTE_DL_DCCH_Message_t));
dl_dcch_msg.message.present = LTE_DL_DCCH_MessageType_PR_c1;
dl_dcch_msg.message.choice.c1.present = LTE_DL_DCCH_MessageType__c1_PR_ueCapabilityEnquiry;
dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.rrc_TransactionIdentifier = Transaction_id;
dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.present = LTE_UECapabilityEnquiry__criticalExtensions_PR_c1;
dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.present =
LTE_UECapabilityEnquiry__criticalExtensions__c1_PR_ueCapabilityEnquiry_r8;
dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list.count=0;
ASN_SEQUENCE_ADD(&dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list, ASN_SEQUENCE_ADD(&dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list,
&rat_nr); &rat_nr);
ASN_SEQUENCE_ADD(&dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list, ASN_SEQUENCE_ADD(&dl_dcch_msg.message.choice.c1.choice.ueCapabilityEnquiry.criticalExtensions.choice.c1.choice.ueCapabilityEnquiry_r8.ue_CapabilityRequest.list,
...@@ -3548,6 +3597,8 @@ uint8_t do_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP, ...@@ -3548,6 +3597,8 @@ uint8_t do_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP,
r13_10.nonCriticalExtension = &r14_30; r13_10.nonCriticalExtension = &r14_30;
r14_30.nonCriticalExtension = &r15_10; r14_30.nonCriticalExtension = &r15_10;
/* TODO: no hardcoded values here */
OCTET_STRING_t req_freq; OCTET_STRING_t req_freq;
//unsigned char req_freq_buf[5] = { 0x00, 0x20, 0x1a, 0x02, 0x68 }; // bands 7 & nr78 //unsigned char req_freq_buf[5] = { 0x00, 0x20, 0x1a, 0x02, 0x68 }; // bands 7 & nr78
//unsigned char req_freq_buf[5] = { 0x00, 0x20, 0x1a, 0x08, 0x18 }; // bands 7 & nr260 //unsigned char req_freq_buf[5] = { 0x00, 0x20, 0x1a, 0x08, 0x18 }; // bands 7 & nr260
...@@ -3579,14 +3630,14 @@ uint8_t do_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP, ...@@ -3579,14 +3630,14 @@ uint8_t do_UECapabilityEnquiry( const protocol_ctxt_t *const ctxt_pP,
return -1; return -1;
} }
LOG_D(RRC,"[eNB %d] UECapabilityRequest for UE %x Encoded %zd bits (%zd bytes)\n", LOG_D(RRC,"[eNB %d] NR UECapabilityRequest for UE %x Encoded %zd bits (%zd bytes)\n",
ctxt_pP->module_id, ctxt_pP->module_id,
ctxt_pP->rnti, ctxt_pP->rnti,
enc_rval.encoded, enc_rval.encoded,
(enc_rval.encoded+7)/8); (enc_rval.encoded+7)/8);
if (enc_rval.encoded==-1) { if (enc_rval.encoded==-1) {
LOG_E(RRC,"[eNB %d] ASN1 : UECapabilityRequest encoding failed for UE %x\n", LOG_E(RRC,"[eNB %d] ASN1 : NR UECapabilityRequest encoding failed for UE %x\n",
ctxt_pP->module_id, ctxt_pP->module_id,
ctxt_pP->rnti); ctxt_pP->rnti);
return(-1); return(-1);
......
openair2/RRC/LTE/MESSAGES/asn1_msg.h
View file @ eb9d37f6
...@@ -362,6 +362,13 @@ do_UECapabilityEnquiry( ...@@ -362,6 +362,13 @@ do_UECapabilityEnquiry(
const uint8_t Transaction_id const uint8_t Transaction_id
); );
uint8_t
do_NR_UECapabilityEnquiry(
const protocol_ctxt_t *const ctxt_pP,
uint8_t *const buffer,
const uint8_t Transaction_id
);
uint8_t do_SecurityModeCommand( uint8_t do_SecurityModeCommand(
const protocol_ctxt_t *const ctxt_pP, const protocol_ctxt_t *const ctxt_pP,
uint8_t *const buffer, uint8_t *const buffer,
......
openair2/RRC/LTE/rrc_defs.h
View file @ eb9d37f6
...@@ -647,6 +647,7 @@ typedef struct eNB_RRC_UE_s { ...@@ -647,6 +647,7 @@ typedef struct eNB_RRC_UE_s {
uint8_t e_rab_release_command_flag; uint8_t e_rab_release_command_flag;
int8_t reestablishment_xid; int8_t reestablishment_xid;
int does_nr; int does_nr;
int nr_capabilities_requested;
} eNB_RRC_UE_t; } eNB_RRC_UE_t;
typedef uid_t ue_uid_t; typedef uid_t ue_uid_t;
......
openair2/RRC/LTE/rrc_eNB.c
View file @ eb9d37f6
...@@ -1287,6 +1287,52 @@ rrc_eNB_generate_UECapabilityEnquiry( ...@@ -1287,6 +1287,52 @@ rrc_eNB_generate_UECapabilityEnquiry(
PDCP_TRANSMISSION_MODE_CONTROL); PDCP_TRANSMISSION_MODE_CONTROL);
} }
//-----------------------------------------------------------------------------
void
rrc_eNB_generate_NR_UECapabilityEnquiry(
const protocol_ctxt_t *const ctxt_pP,
rrc_eNB_ue_context_t *const ue_context_pP
)
//-----------------------------------------------------------------------------
{
uint8_t buffer[100];
uint8_t size;
T(T_ENB_RRC_UE_CAPABILITY_ENQUIRY, T_INT(ctxt_pP->module_id), T_INT(ctxt_pP->frame),
T_INT(ctxt_pP->subframe), T_INT(ctxt_pP->rnti));
size = do_NR_UECapabilityEnquiry(
ctxt_pP,
buffer,
rrc_eNB_get_next_transaction_identifier(ctxt_pP->module_id));
LOG_I(RRC,
PROTOCOL_RRC_CTXT_UE_FMT" Logical Channel DL-DCCH, Generate NR UECapabilityEnquiry (bytes %d)\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
size);
LOG_D(RRC,
PROTOCOL_RRC_CTXT_UE_FMT" --- PDCP_DATA_REQ/%d Bytes (NR UECapabilityEnquiry MUI %d) --->[PDCP][RB %02d]\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP),
size,
rrc_eNB_mui,
DCCH);
MSC_LOG_TX_MESSAGE(
MSC_RRC_ENB,
MSC_RRC_UE,
buffer,
size,
MSC_AS_TIME_FMT" rrcNRUECapabilityEnquiry UE %x MUI %d size %u",
MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_pP->ue_context.rnti,
rrc_eNB_mui,
size);
rrc_data_req(
ctxt_pP,
DCCH,
rrc_eNB_mui++,
SDU_CONFIRM_NO,
size,
buffer,
PDCP_TRANSMISSION_MODE_CONTROL);
}
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
void void
rrc_eNB_generate_RRCConnectionReject( rrc_eNB_generate_RRCConnectionReject(
...@@ -6396,6 +6442,16 @@ rrc_eNB_process_RRCConnectionReconfigurationComplete( ...@@ -6396,6 +6442,16 @@ rrc_eNB_process_RRCConnectionReconfigurationComplete(
free(DRB_Release_configList2); free(DRB_Release_configList2);
ue_context_pP->ue_context.DRB_Release_configList2[xid] = NULL; ue_context_pP->ue_context.DRB_Release_configList2[xid] = NULL;
} }
/* let's request NR capabilities if the UE supports NR
* maybe not the right place/time to request
*/
if (ue_context_pP->ue_context.does_nr &&
!ue_context_pP->ue_context.nr_capabilities_requested) {
ue_context_pP->ue_context.nr_capabilities_requested = 1;
rrc_eNB_generate_NR_UECapabilityEnquiry(ctxt_pP, ue_context_pP);
}
} }
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
...@@ -7214,6 +7270,48 @@ rrc_eNB_decode_ccch( ...@@ -7214,6 +7270,48 @@ rrc_eNB_decode_ccch(
return rval; return rval;
} }
//-----------------------------------------------------------------------------
static int
is_en_dc_supported(
LTE_UE_EUTRA_Capability_t *c
)
//-----------------------------------------------------------------------------
{
/* to be refined - check that the eNB is connected to a gNB, check that
* the bands supported by the UE include the band of the gNB
*/
#define NCE nonCriticalExtension
return c != NULL
&& c->NCE != NULL
&& c->NCE->NCE != NULL
&& c->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->irat_ParametersNR_r15 != NULL
&& c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->irat_ParametersNR_r15->en_DC_r15 != NULL
&& *c->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->NCE->irat_ParametersNR_r15->en_DC_r15 == LTE_IRAT_ParametersNR_r15__en_DC_r15_supported;
#undef NCE
}
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
int int
rrc_eNB_decode_dcch( rrc_eNB_decode_dcch(
...@@ -7743,13 +7841,6 @@ rrc_eNB_decode_dcch( ...@@ -7743,13 +7841,6 @@ rrc_eNB_decode_dcch(
LOG_I(RRC, "got UE capabilities for UE %x\n", ctxt_pP->rnti); LOG_I(RRC, "got UE capabilities for UE %x\n", ctxt_pP->rnti);
if (ue_context_p->ue_context.UE_Capability) {
LOG_I(RRC, "freeing old UE capabilities for UE %x\n", ctxt_pP->rnti);
ASN_STRUCT_FREE(asn_DEF_LTE_UE_EUTRA_Capability,
ue_context_p->ue_context.UE_Capability);
ue_context_p->ue_context.UE_Capability = 0;
}
int eutra_index = -1; int eutra_index = -1;
for (i = 0; i < ul_dcch_msg->message.choice.c1.choice.ueCapabilityInformation.criticalExtensions.choice.c1.choice.ueCapabilityInformation_r8.ue_CapabilityRAT_ContainerList.list.count; i++) { for (i = 0; i < ul_dcch_msg->message.choice.c1.choice.ueCapabilityInformation.criticalExtensions.choice.c1.choice.ueCapabilityInformation_r8.ue_CapabilityRAT_ContainerList.list.count; i++) {
...@@ -7760,9 +7851,17 @@ rrc_eNB_decode_dcch( ...@@ -7760,9 +7851,17 @@ rrc_eNB_decode_dcch(
} }
eutra_index = i; eutra_index = i;
} }
/* todo: improve nr dual connectivity capability checking */ }
if (ul_dcch_msg->message.choice.c1.choice.ueCapabilityInformation.criticalExtensions.choice.c1.choice.ueCapabilityInformation_r8.ue_CapabilityRAT_ContainerList.list.array[i]->rat_Type == LTE_RAT_Type_eutra_nr)
ue_context_p->ue_context.does_nr = 1; /* do nothing if no EUTRA capabilities (TODO: may be NR capabilities, to be processed somehow) */
if (eutra_index == -1)
break;
if (ue_context_p->ue_context.UE_Capability) {
LOG_I(RRC, "freeing old UE capabilities for UE %x\n", ctxt_pP->rnti);
ASN_STRUCT_FREE(asn_DEF_LTE_UE_EUTRA_Capability,
ue_context_p->ue_context.UE_Capability);
ue_context_p->ue_context.UE_Capability = 0;
} }
dec_rval = uper_decode(NULL, dec_rval = uper_decode(NULL,
...@@ -7786,6 +7885,9 @@ rrc_eNB_decode_dcch( ...@@ -7786,6 +7885,9 @@ rrc_eNB_decode_dcch(
ue_context_p->ue_context.UE_Capability = 0; ue_context_p->ue_context.UE_Capability = 0;
} }
if (dec_rval.code == RC_OK)
ue_context_p->ue_context.does_nr = is_en_dc_supported(ue_context_p->ue_context.UE_Capability);
if (EPC_MODE_ENABLED) { if (EPC_MODE_ENABLED) {
rrc_eNB_send_S1AP_UE_CAPABILITIES_IND(ctxt_pP, rrc_eNB_send_S1AP_UE_CAPABILITIES_IND(ctxt_pP,
ue_context_p, ue_context_p,
......
openair2/RRC/LTE/rrc_proto.h
View file @ eb9d37f6
...@@ -584,6 +584,12 @@ rrc_eNB_generate_UECapabilityEnquiry( ...@@ -584,6 +584,12 @@ rrc_eNB_generate_UECapabilityEnquiry(
rrc_eNB_ue_context_t *const ue_context_pP rrc_eNB_ue_context_t *const ue_context_pP
); );
void
rrc_eNB_generate_NR_UECapabilityEnquiry(
const protocol_ctxt_t *const ctxt_pP,
rrc_eNB_ue_context_t *const ue_context_pP
);
void void
rrc_eNB_generate_SecurityModeCommand( rrc_eNB_generate_SecurityModeCommand(
const protocol_ctxt_t *const ctxt_pP, const protocol_ctxt_t *const ctxt_pP,
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment