lib,rrc_nr: made separate function to create default PDCP SRB configs

lib/include/srsran/asn1/rrc_nr_utils.h

@@ -144,6 +144,7 @@ int make_rlc_config_t(const asn1::rrc_nr::rlc_cfg_c& asn1_type, uint8_t bearer_i
  *      PDCP Config
  **************************/
 pdcp_config_t make_srb_pdcp_config_t(const uint8_t bearer_id, bool is_ue);
+pdcp_config_t make_nr_srb_pdcp_config_t(const uint8_t bearer_id, bool is_ue);
 pdcp_config_t make_drb_pdcp_config_t(const uint8_t bearer_id, bool is_ue, const asn1::rrc_nr::pdcp_cfg_s& pdcp_cfg);
 
 } // namespace srsran

lib/include/srsran/asn1/rrc_utils.h

@@ -94,6 +94,7 @@ void         to_asn1(asn1::rrc::rlc_cfg_c* asn1_type, const rlc_config_t& cfg);
  *      PDCP Config
  **************************/
 srsran::pdcp_config_t make_srb_pdcp_config_t(const uint8_t bearer_id, bool is_ue);
+srsran::pdcp_config_t make_nr_srb_pdcp_config_t(const uint8_t bearer_id, bool is_ue);
 srsran::pdcp_config_t make_drb_pdcp_config_t(const uint8_t bearer_id, bool is_ue);
 uint8_t               get_pdcp_drb_sn_len(const asn1::rrc::pdcp_cfg_s& pdcp_cfg);
 srsran::pdcp_config_t

lib/src/asn1/rrc_utils.cc

@@ -215,6 +215,20 @@ srsran::pdcp_config_t make_srb_pdcp_config_t(const uint8_t bearer_id, bool is_ue
   return cfg;
 }
 
+srsran::pdcp_config_t make_nr_srb_pdcp_config_t(const uint8_t bearer_id, bool is_ue)
+{
+  pdcp_config_t cfg(bearer_id,
+                    PDCP_RB_IS_SRB,
+                    is_ue ? SECURITY_DIRECTION_UPLINK : SECURITY_DIRECTION_DOWNLINK,
+                    is_ue ? SECURITY_DIRECTION_DOWNLINK : SECURITY_DIRECTION_UPLINK,
+                    PDCP_SN_LEN_12,
+                    pdcp_t_reordering_t::ms500,
+                    pdcp_discard_timer_t::infinity,
+                    false,
+                    srsran_rat_t::lte);
+  return cfg;
+}
+
 srsran::pdcp_config_t make_drb_pdcp_config_t(const uint8_t bearer_id, bool is_ue)
 {
   pdcp_config_t cfg(bearer_id,

srsgnb/src/stack/rrc/rrc_nr_ue.cc

@@ -1167,7 +1167,7 @@ int rrc_nr::ue::update_pdcp_bearers(const asn1::rrc_nr::radio_bearer_cfg_s& radi
 
   // add SRBs
   for (const srb_to_add_mod_s& srb : radio_bearer_diff.srb_to_add_mod_list) {
-    srsran::pdcp_config_t   pdcp_cnfg  = srsran::make_srb_pdcp_config_t(srb.srb_id, false);
+    srsran::pdcp_config_t   pdcp_cnfg  = srsran::make_nr_srb_pdcp_config_t(srb.srb_id, false);
     const rlc_bearer_cfg_s* rlc_bearer = nullptr;
     for (const rlc_bearer_cfg_s& item : cell_group_diff.rlc_bearer_to_add_mod_list) {
       if (item.served_radio_bearer.type().value == rlc_bearer_cfg_s::served_radio_bearer_c_::types_opts::srb_id and