/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.0 (the "License"); you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * * http://www.openairinterface.org/?page_id=698 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ /*! \file pdcp_fifo.c * \brief pdcp interface with linux IP interface, have a look at http://man7.org/linux/man-pages/man7/netlink.7.html for netlink * \author Navid Nikaein and Lionel GAUTHIER * \date 2009 - 2016 * \version 0.5 * \email navid.nikaein@eurecom.fr * \warning This component can be runned only in user-space * @ingroup pdcp */ #define PDCP_FIFO_C #define PDCP_DEBUG 1 //#define DEBUG_PDCP_FIFO_FLUSH_SDU #ifndef OAI_EMU extern int otg_enabled; #endif #include "pdcp.h" #include "pdcp_primitives.h" #ifdef USER_MODE #include <pthread.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #define rtf_put write #define rtf_get read #else #include <rtai_fifos.h> #endif //USER_MODE #include "../MAC/extern.h" #include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h" #include "NETWORK_DRIVER/LITE/constant.h" #include "SIMULATION/ETH_TRANSPORT/extern.h" #include "UTIL/OCG/OCG.h" #include "UTIL/OCG/OCG_extern.h" #include "UTIL/LOG/log.h" #include "UTIL/OTG/otg_tx.h" #include "UTIL/FIFO/pad_list.h" #include "UTIL/LOG/vcd_signal_dumper.h" #include "platform_constants.h" #include "msc.h" #include "assertions.h" #ifdef PDCP_USE_NETLINK #include <sys/socket.h> #include <linux/netlink.h> #include "NETWORK_DRIVER/UE_IP/constant.h" extern char nl_rx_buf[NL_MAX_PAYLOAD]; extern struct sockaddr_nl nas_src_addr, nas_dest_addr; extern struct nlmsghdr *nas_nlh_tx; extern struct nlmsghdr *nas_nlh_rx; extern struct iovec nas_iov_tx; extern struct iovec nas_iov_rx; extern int nas_sock_fd; extern struct msghdr nas_msg_tx; extern struct msghdr nas_msg_rx; unsigned char pdcp_read_state_g = 0; #endif extern Packet_OTG_List_t *otg_pdcp_buffer; #if defined(LINK_ENB_PDCP_TO_GTPV1U) # include "gtpv1u_eNB_task.h" #endif /* Prevent de-queueing the same PDCP SDU from the queue twice * by multiple threads. This has happened in TDD when thread-odd * is flushing a PDCP SDU after UE_RX() processing; whereas * thread-even is at a special-subframe, skips the UE_RX() process * and goes straight to the PDCP SDU flushing. The 2nd flushing * dequeues the same SDU again causing unexpected behavior. * * comment out the MACRO below to disable this protection */ #define PDCP_SDU_FLUSH_LOCK #ifdef PDCP_SDU_FLUSH_LOCK static pthread_mutex_t mtex = PTHREAD_MUTEX_INITIALIZER; #endif pdcp_data_req_header_t pdcp_read_header_g; //----------------------------------------------------------------------------- int pdcp_fifo_flush_sdus(const protocol_ctxt_t* const ctxt_pP) { //----------------------------------------------------------------------------- //#if defined(PDCP_USE_NETLINK) && defined(LINUX) int ret = 0; //#endif #ifdef DEBUG_PDCP_FIFO_FLUSH_SDU #define THREAD_NAME_LEN 16 static char threadname[THREAD_NAME_LEN]; ret = pthread_getname_np(pthread_self(), threadname, THREAD_NAME_LEN); if (ret != 0) { perror("pthread_getname_np : "); exit_fun("Error getting thread name"); } #undef THREAD_NAME_LEN #endif #ifdef PDCP_SDU_FLUSH_LOCK ret = pthread_mutex_trylock(&mtex); if (ret == EBUSY) { #ifdef DEBUG_PDCP_FIFO_FLUSH_SDU LOG_W(PDCP, "[%s] at SFN/SF=%d/%d wait for PDCP FIFO to be unlocked\n", threadname, ctxt_pP->frame, ctxt_pP->subframe); #endif if (pthread_mutex_lock(&mtex)) { exit_fun("PDCP_SDU_FLUSH_LOCK lock error!"); } #ifdef DEBUG_PDCP_FIFO_FLUSH_SDU LOG_I(PDCP, "[%s] at SFN/SF=%d/%d PDCP FIFO is unlocked\n", threadname, ctxt_pP->frame, ctxt_pP->subframe); #endif } else if (ret != 0) { exit_fun("PDCP_SDU_FLUSH_LOCK trylock error!"); } #endif mem_block_t *sdu_p = list_get_head (&pdcp_sdu_list); int bytes_wrote = 0; int pdcp_nb_sdu_sent = 0; uint8_t cont = 1; #if defined(LINK_ENB_PDCP_TO_GTPV1U) //MessageDef *message_p = NULL; #endif VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_FIFO_FLUSH, 1 ); while (sdu_p && cont) { #ifdef DEBUG_PDCP_FIFO_FLUSH_SDU LOG_D(PDCP, "[%s] SFN/SF=%d/%d inst=%d size=%d\n", threadname, ctxt_pP->frame, ctxt_pP->subframe, ((pdcp_data_ind_header_t*) sdu_p->data)->inst, ((pdcp_data_ind_header_t *) sdu_p->data)->data_size); #else #if ! defined(OAI_EMU) /* TODO: do we have to reset to 0 or not? not for a scenario with 1 UE at least */ // ((pdcp_data_ind_header_t *)(sdu_p->data))->inst = 0; #endif #endif #if defined(LINK_ENB_PDCP_TO_GTPV1U) if (ctxt_pP->enb_flag) { AssertFatal(0, "Now execution should not go here"); LOG_D(PDCP,"Sending to GTPV1U %d bytes\n", ((pdcp_data_ind_header_t *)(sdu_p->data))->data_size); gtpv1u_new_data_req( ctxt_pP->module_id, //gtpv1u_data_t *gtpv1u_data_p, ctxt_pP->rnti,//rb_id/maxDRB, TO DO UE ID ((pdcp_data_ind_header_t *)(sdu_p->data))->rb_id + 4, &(((uint8_t *) sdu_p->data)[sizeof (pdcp_data_ind_header_t)]), ((pdcp_data_ind_header_t *)(sdu_p->data))->data_size); list_remove_head (&pdcp_sdu_list); free_mem_block (sdu_p, __func__); cont = 1; pdcp_nb_sdu_sent += 1; sdu_p = list_get_head (&pdcp_sdu_list); LOG_D(OTG,"After GTPV1U\n"); continue; // loop again } #endif /* defined(ENABLE_USE_MME) */ #ifdef PDCP_DEBUG LOG_D(PDCP, "PDCP->IP TTI %d INST %d: Preparing %d Bytes of data from rab %d to Nas_mesh\n", ctxt_pP->frame, ((pdcp_data_ind_header_t *)(sdu_p->data))->inst, ((pdcp_data_ind_header_t *)(sdu_p->data))->data_size, ((pdcp_data_ind_header_t *)(sdu_p->data))->rb_id); #endif //PDCP_DEBUG cont = 0; if (!pdcp_output_sdu_bytes_to_write) { if (!pdcp_output_header_bytes_to_write) { pdcp_output_header_bytes_to_write = sizeof (pdcp_data_ind_header_t); } #ifdef PDCP_USE_RT_FIFO bytes_wrote = rtf_put (PDCP2PDCP_USE_RT_FIFO, &(((uint8_t *) sdu->data)[sizeof (pdcp_data_ind_header_t) - pdcp_output_header_bytes_to_write]), pdcp_output_header_bytes_to_write); #else #ifdef PDCP_USE_NETLINK #ifdef LINUX memcpy(NLMSG_DATA(nas_nlh_tx), &(((uint8_t *) sdu_p->data)[sizeof (pdcp_data_ind_header_t) - pdcp_output_header_bytes_to_write]), pdcp_output_header_bytes_to_write); nas_nlh_tx->nlmsg_len = pdcp_output_header_bytes_to_write; #endif //LINUX #endif //PDCP_USE_NETLINK bytes_wrote = pdcp_output_header_bytes_to_write; #endif //PDCP_USE_RT_FIFO #ifdef PDCP_DEBUG LOG_D(PDCP, "Frame %d Sent %d Bytes of header to Nas_mesh\n", ctxt_pP->frame, bytes_wrote); #endif //PDCP_DEBUG if (bytes_wrote > 0) { pdcp_output_header_bytes_to_write = pdcp_output_header_bytes_to_write - bytes_wrote; if (!pdcp_output_header_bytes_to_write) { // continue with sdu pdcp_output_sdu_bytes_to_write = ((pdcp_data_ind_header_t *) sdu_p->data)->data_size; AssertFatal(pdcp_output_sdu_bytes_to_write >= 0, "invalid data_size!"); #ifdef PDCP_USE_RT_FIFO bytes_wrote = rtf_put (PDCP2PDCP_USE_RT_FIFO, &(sdu->data[sizeof (pdcp_data_ind_header_t)]), pdcp_output_sdu_bytes_to_write); #else #ifdef PDCP_USE_NETLINK #ifdef LINUX memcpy(NLMSG_DATA(nas_nlh_tx)+sizeof(pdcp_data_ind_header_t), &(sdu_p->data[sizeof (pdcp_data_ind_header_t)]), pdcp_output_sdu_bytes_to_write); nas_nlh_tx->nlmsg_len += pdcp_output_sdu_bytes_to_write; VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_UE_PDCP_FLUSH_SIZE, pdcp_output_sdu_bytes_to_write); VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_FIFO_FLUSH_BUFFER, 1 ); ret = sendmsg(nas_sock_fd,&nas_msg_tx,0); VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_FIFO_FLUSH_BUFFER, 0 ); VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_UE_PDCP_FLUSH_ERR, ret ); if (ret<0) { LOG_E(PDCP, "[PDCP_FIFOS] sendmsg returns %d (errno: %d)\n", ret, errno); MSC_LOG_TX_MESSAGE_FAILED( (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE, (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_IP_ENB:MSC_IP_UE, NULL, 0, MSC_AS_TIME_FMT" DATA-IND RNTI %"PRIx16" rb %u size %u", MSC_AS_TIME_ARGS(ctxt_pP), ((pdcp_data_ind_header_t *)(sdu_p->data))->rb_id, ((pdcp_data_ind_header_t *)(sdu_p->data))->data_size); mac_xface->macphy_exit("sendmsg failed for nas_sock_fd\n"); break; } else { MSC_LOG_TX_MESSAGE( (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE, (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_IP_ENB:MSC_IP_UE, NULL, 0, MSC_AS_TIME_FMT" DATA-IND RNTI %"PRIx16" rb %u size %u", MSC_AS_TIME_ARGS(ctxt_pP), ((pdcp_data_ind_header_t *)(sdu_p->data))->rb_id, ((pdcp_data_ind_header_t *)(sdu_p->data))->data_size); } #endif // LINUX #endif //PDCP_USE_NETLINK bytes_wrote= pdcp_output_sdu_bytes_to_write; #endif // PDCP_USE_RT_FIFO #ifdef PDCP_DEBUG LOG_D(PDCP, "PDCP->IP Frame %d INST %d: Sent %d Bytes of data from rab %d to higher layers\n", ctxt_pP->frame, ((pdcp_data_ind_header_t *)(sdu_p->data))->inst, bytes_wrote, ((pdcp_data_ind_header_t *)(sdu_p->data))->rb_id); #endif //PDCP_DEBUG if (bytes_wrote > 0) { pdcp_output_sdu_bytes_to_write -= bytes_wrote; if (!pdcp_output_sdu_bytes_to_write) { // OK finish with this SDU // LOG_D(PDCP, "rb sent a sdu qos_sap %d\n", sapiP); LOG_D(PDCP, "[FRAME %05d][xxx][PDCP][MOD xx/xx][RB %u][--- PDCP_DATA_IND / %d Bytes --->][IP][INSTANCE %u][RB %u]\n", ctxt_pP->frame, ((pdcp_data_ind_header_t *)(sdu_p->data))->rb_id, ((pdcp_data_ind_header_t *)(sdu_p->data))->data_size, ((pdcp_data_ind_header_t *)(sdu_p->data))->inst, ((pdcp_data_ind_header_t *)(sdu_p->data))->rb_id); list_remove_head (&pdcp_sdu_list); free_mem_block (sdu_p, __func__); cont = 1; pdcp_nb_sdu_sent += 1; sdu_p = list_get_head (&pdcp_sdu_list); } else { LOG_D(PDCP, "1 skip free_mem_block: pdcp_output_sdu_bytes_to_write = %d\n", pdcp_output_sdu_bytes_to_write); AssertFatal(pdcp_output_sdu_bytes_to_write > 0, "pdcp_output_sdu_bytes_to_write cannot be negative!"); } } else { LOG_W(PDCP, "2: RADIO->IP SEND SDU CONGESTION!\n"); } } else { LOG_W(PDCP, "3: RADIO->IP SEND SDU CONGESTION!\n"); } } else { LOG_D(PDCP, "4 skip free_mem_block: bytes_wrote = %d\n", bytes_wrote); } } else { // continue writing sdu #ifdef PDCP_USE_RT_FIFO bytes_wrote = rtf_put (PDCP2PDCP_USE_RT_FIFO, (uint8_t *) (&(sdu_p->data[sizeof (pdcp_data_ind_header_t) + ((pdcp_data_ind_header_t *) sdu_p->data)->data_size - pdcp_output_sdu_bytes_to_write])), pdcp_output_sdu_bytes_to_write); #else // PDCP_USE_RT_FIFO bytes_wrote = pdcp_output_sdu_bytes_to_write; #endif // PDCP_USE_RT_FIFO if (bytes_wrote > 0) { pdcp_output_sdu_bytes_to_write -= bytes_wrote; if (!pdcp_output_sdu_bytes_to_write) { // OK finish with this SDU //PRINT_RB_SEND_OUTPUT_SDU ("[PDCP] RADIO->IP SEND SDU\n"); list_remove_head (&pdcp_sdu_list); free_mem_block (sdu_p, __func__); cont = 1; pdcp_nb_sdu_sent += 1; sdu_p = list_get_head (&pdcp_sdu_list); // LOG_D(PDCP, "rb sent a sdu from rab\n"); } else { LOG_D(PDCP, "5 skip free_mem_block: pdcp_output_sdu_bytes_to_write = %d\n", pdcp_output_sdu_bytes_to_write); } } else { LOG_D(PDCP, "6 skip free_mem_block: bytes_wrote = %d\n", bytes_wrote); } } } VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_FIFO_FLUSH, 0 ); #ifdef PDCP_USE_RT_FIFO if ((pdcp_nb_sdu_sent)) { if ((pdcp_2_nas_irq > 0)) { #ifdef PDCP_DEBUG LOG_D(PDCP, "Frame %d : Trigger NAS RX interrupt\n", ctxt_pP->frame); #endif //PDCP_DEBUG rt_pend_linux_srq (pdcp_2_nas_irq); } else { LOG_E(PDCP, "Frame %d: ERROR IF IP STACK WANTED : NOTIF PACKET(S) pdcp_2_nas_irq not initialized : %d\n", ctxt_pP->frame, pdcp_2_nas_irq); } } #endif //PDCP_USE_RT_FIFO #ifdef PDCP_SDU_FLUSH_LOCK if (pthread_mutex_unlock(&mtex)) exit_fun("PDCP_SDU_FLUSH_LOCK unlock error!"); #endif return pdcp_nb_sdu_sent; } //----------------------------------------------------------------------------- int pdcp_fifo_read_input_sdus (const protocol_ctxt_t* const ctxt_pP) { #ifdef PDCP_USE_NETLINK protocol_ctxt_t ctxt_cpy = *ctxt_pP; protocol_ctxt_t ctxt; hash_key_t key = HASHTABLE_NOT_A_KEY_VALUE; hashtable_rc_t h_rc; struct pdcp_netlink_element_s* data_p = NULL; /* avoid gcc warnings */ (void)data_p; module_id_t ue_id = 0; pdcp_t* pdcp_p = NULL; # if defined(PDCP_USE_NETLINK_QUEUES) rb_id_t rab_id = 0; pdcp_transmission_mode_t pdcp_mode = PDCP_TRANSMISSION_MODE_UNKNOWN; while (pdcp_netlink_dequeue_element(ctxt_pP, &data_p) != 0) { DevAssert(data_p != NULL); rab_id = data_p->pdcp_read_header.rb_id % maxDRB; // ctxt_pP->rnti is NOT_A_RNTI ctxt_cpy.rnti = pdcp_module_id_to_rnti[ctxt_cpy.module_id][data_p->pdcp_read_header.inst]; key = PDCP_COLL_KEY_VALUE(ctxt_pP->module_id, ctxt_cpy.rnti, ctxt_pP->enb_flag, rab_id, SRB_FLAG_NO); h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p); if (h_rc != HASH_TABLE_OK) { LOG_W(PDCP, PROTOCOL_CTXT_FMT" Dropped IP PACKET cause no PDCP instanciated\n", PROTOCOL_CTXT_ARGS(ctxt_pP)); free(data_p->data); free(data_p); data_p = NULL; continue; } CHECK_CTXT_ARGS(&ctxt_cpy); AssertFatal (rab_id < maxDRB, "RB id is too high (%u/%d)!\n", rab_id, maxDRB); if (rab_id != 0) { LOG_D(PDCP, "[FRAME %05d][%s][IP][INSTANCE %u][RB %u][--- PDCP_DATA_REQ " "/ %d Bytes --->][PDCP][MOD %u][RB %u]\n", ctxt_cpy.frame, (ctxt_cpy.enb_flag) ? "eNB" : "UE", data_p->pdcp_read_header.inst, data_p->pdcp_read_header.rb_id, data_p->pdcp_read_header.data_size, ctxt_cpy.module_id, rab_id); #ifdef OAI_NW_DRIVER_TYPE_ETHERNET if ((data_p->pdcp_read_header.traffic_type == TRAFFIC_IPV6_TYPE_MULTICAST) /*TRAFFIC_IPV6_TYPE_MULTICAST */ || (data_p->pdcp_read_header.traffic_type == TRAFFIC_IPV4_TYPE_MULTICAST) /*TRAFFIC_IPV4_TYPE_MULTICAST */ || (data_p->pdcp_read_header.traffic_type == TRAFFIC_IPV4_TYPE_BROADCAST) /*TRAFFIC_IPV4_TYPE_BROADCAST */ ) { #if defined(Rel10) || defined(Rel14) PDCP_TRANSMISSION_MODE_TRANSPARENT; #else pdcp_mode= PDCP_TRANSMISSION_MODE_DATA; #endif } else if ((data_p->pdcp_read_header.traffic_type == TRAFFIC_IPV6_TYPE_UNICAST) /* TRAFFIC_IPV6_TYPE_UNICAST */ || (data_p->pdcp_read_header.traffic_type == TRAFFIC_IPV4_TYPE_UNICAST) /*TRAFFIC_IPV4_TYPE_UNICAST*/ ) { pdcp_mode= PDCP_TRANSMISSION_MODE_DATA; } else { pdcp_mode= PDCP_TRANSMISSION_MODE_DATA; LOG_W(PDCP,"unknown IP traffic type \n"); } #else // OAI_NW_DRIVER_TYPE_ETHERNET NASMESH driver does not curreenlty support multicast traffic pdcp_mode = PDCP_TRANSMISSION_MODE_DATA; #endif pdcp_data_req(&ctxt_cpy, SRB_FLAG_NO, rab_id % maxDRB, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, data_p->pdcp_read_header.data_size, data_p->data, pdcp_mode); } else if (ctxt_cpy.enb_flag) { /* rb_id = 0, thus interpreated as broadcast and transported as * multiple unicast is a broadcast packet, we have to send this * packet on all default RABS of all connected UEs */ LOG_D(PDCP, "eNB Try Forcing send on DEFAULT_RAB_ID first_ue_local %u nb_ue_local %u\n", oai_emulation.info.first_ue_local, oai_emulation.info.nb_ue_local); for (ue_id = 0; ue_id < NB_UE_INST; ue_id++) { if (pdcp_module_id_to_rnti[ctxt_cpy.module_id][ue_id] != NOT_A_RNTI) { LOG_D(PDCP, "eNB Try Forcing send on DEFAULT_RAB_ID UE %d\n", ue_id); ctxt.module_id = ctxt_cpy.module_id; ctxt.rnti = ctxt_cpy.pdcp_module_id_to_rnti[ctxt_cpy.module_id][ue_id]; ctxt.frame = ctxt_cpy.frame; ctxt.enb_flag = ctxt_cpy.enb_flag; pdcp_data_req( &ctxt, SRB_FLAG_NO, DEFAULT_RAB_ID, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, data_p->pdcp_read_header.data_size, data_p->data, PDCP_TRANSMISSION_MODE_DATA); } } } else { LOG_D(PDCP, "Forcing send on DEFAULT_RAB_ID\n"); pdcp_data_req( &ctxt_cpy, SRB_FLAG_NO, DEFAULT_RAB_ID, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, data_p->pdcp_read_header.data_size, data_p->data, PDCP_TRANSMISSION_MODE_DATA); } free(data_p->data); free(data_p); data_p = NULL; } return 0; # else /* PDCP_USE_NETLINK_QUEUES*/ int len = 1; int msg_len; rb_id_t rab_id = 0; int rlc_data_req_flag = 3; while ((len > 0) && (rlc_data_req_flag !=0)) { VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_FIFO_READ, 1 ); VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_FIFO_READ_BUFFER, 1 ); len = recvmsg(nas_sock_fd, &nas_msg_rx, 0); VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_FIFO_READ_BUFFER, 0 ); if (len<=0) { // nothing in pdcp NAS socket //LOG_D(PDCP, "[PDCP][NETLINK] Nothing in socket, length %d \n", len); } else { msg_len = len; for (nas_nlh_rx = (struct nlmsghdr *) nl_rx_buf; NLMSG_OK (nas_nlh_rx, msg_len); nas_nlh_rx = NLMSG_NEXT (nas_nlh_rx, msg_len)) { if (nas_nlh_rx->nlmsg_type == NLMSG_DONE) { LOG_D(PDCP, "[PDCP][NETLINK] RX NLMSG_DONE\n"); //return; } if (nas_nlh_rx->nlmsg_type == NLMSG_ERROR) { LOG_D(PDCP, "[PDCP][NETLINK] RX NLMSG_ERROR\n"); } if (pdcp_read_state_g == 0) { if (nas_nlh_rx->nlmsg_len == sizeof (pdcp_data_req_header_t) + sizeof(struct nlmsghdr)) { pdcp_read_state_g = 1; //get memcpy((void *)&pdcp_read_header_g, (void *)NLMSG_DATA(nas_nlh_rx), sizeof(pdcp_data_req_header_t)); LOG_D(PDCP, "[PDCP][NETLINK] RX pdcp_data_req_header_t inst %u, rb_id %u data_size %d\n", pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, pdcp_read_header_g.data_size); } else { LOG_E(PDCP, "[PDCP][NETLINK] WRONG size %d should be sizeof (pdcp_data_req_header_t) + sizeof(struct nlmsghdr)\n", nas_nlh_rx->nlmsg_len); } } else { pdcp_read_state_g = 0; // print_active_requests() #ifdef PDCP_DEBUG LOG_D(PDCP, "[PDCP][NETLINK] Something in socket, length %zu\n", nas_nlh_rx->nlmsg_len - sizeof(struct nlmsghdr)); #endif #ifdef OAI_EMU // overwrite function input parameters, because only one netlink socket for all instances if (pdcp_read_header_g.inst < oai_emulation.info.nb_enb_local) { ctxt.frame = ctxt_cpy.frame; ctxt.enb_flag = ENB_FLAG_YES; ctxt.module_id = pdcp_read_header_g.inst + oai_emulation.info.first_enb_local; ctxt.rnti = oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt.module_id ][pdcp_read_header_g.rb_id / maxDRB + oai_emulation.info.first_ue_local]; rab_id = pdcp_read_header_g.rb_id % maxDRB; } else { ctxt.frame = ctxt_cpy.frame; ctxt.enb_flag = ENB_FLAG_NO; ctxt.module_id = pdcp_read_header_g.inst - oai_emulation.info.nb_enb_local + oai_emulation.info.first_ue_local; ctxt.rnti = pdcp_UE_UE_module_id_to_rnti[ctxt.module_id]; rab_id = pdcp_read_header_g.rb_id % maxDRB; } CHECK_CTXT_ARGS(&ctxt); AssertFatal (rab_id < maxDRB, "RB id is too high (%u/%d)!\n", rab_id, maxDRB); /*LGpdcp_read_header.inst = (pdcp_read_header_g.inst >= oai_emulation.info.nb_enb_local) ? \ pdcp_read_header_g.inst - oai_emulation.info.nb_enb_local+ NB_eNB_INST + oai_emulation.info.first_ue_local : pdcp_read_header_g.inst + oai_emulation.info.first_enb_local;*/ #else // OAI_EMU /* TODO: do we have to reset to 0 or not? not for a scenario with 1 UE at least */ // pdcp_read_header_g.inst = 0; //#warning "TO DO CORRCT VALUES FOR ue mod id, enb mod id" ctxt.frame = ctxt_cpy.frame; ctxt.enb_flag = ctxt_cpy.enb_flag; #ifdef PDCP_DEBUG LOG_D(PDCP, "[PDCP][NETLINK] pdcp_read_header_g.rb_id = %d\n", pdcp_read_header_g.rb_id); #endif if (ctxt_cpy.enb_flag) { ctxt.module_id = 0; rab_id = pdcp_read_header_g.rb_id % maxDRB; ctxt.rnti = pdcp_eNB_UE_instance_to_rnti[pdcp_eNB_UE_instance_to_rnti_index]; } else { ctxt.module_id = 0; rab_id = pdcp_read_header_g.rb_id % maxDRB; ctxt.rnti = pdcp_UE_UE_module_id_to_rnti[ctxt.module_id]; } #endif if (ctxt.enb_flag) { if (rab_id != 0) { rab_id = rab_id % maxDRB; key = PDCP_COLL_KEY_VALUE(ctxt.module_id, ctxt.rnti, ctxt.enb_flag, rab_id, SRB_FLAG_NO); h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p); if (h_rc == HASH_TABLE_OK) { #ifdef PDCP_DEBUG LOG_D(PDCP, "[FRAME %5u][eNB][NETLINK][IP->PDCP] INST %d: Received socket with length %d (nlmsg_len = %zu) on Rab %d \n", ctxt.frame, pdcp_read_header_g.inst, len, nas_nlh_rx->nlmsg_len-sizeof(struct nlmsghdr), pdcp_read_header_g.rb_id); #endif MSC_LOG_RX_MESSAGE( (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE, (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_IP_ENB:MSC_IP_UE, NULL, 0, MSC_AS_TIME_FMT" DATA-REQ inst %u rb %u rab %u size %u", MSC_AS_TIME_ARGS(ctxt_pP), pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, rab_id, pdcp_read_header_g.data_size); LOG_D(PDCP, "[FRAME %5u][eNB][IP][INSTANCE %u][RB %u][--- PDCP_DATA_REQ / %d Bytes --->][PDCP][MOD %u]UE %u][RB %u]\n", ctxt_cpy.frame, pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, pdcp_read_header_g.data_size, ctxt.module_id, ctxt.rnti, rab_id); pdcp_data_req(&ctxt, SRB_FLAG_NO, rab_id, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, pdcp_read_header_g.data_size, (unsigned char *)NLMSG_DATA(nas_nlh_rx), PDCP_TRANSMISSION_MODE_DATA); } else { LOG_D(PDCP, "[FRAME %5u][eNB][IP][INSTANCE %u][RB %u][--- PDCP_DATA_REQ / %d Bytes ---X][PDCP][MOD %u][UE %u][RB %u] NON INSTANCIATED INSTANCE, DROPPED\n", ctxt.frame, pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, pdcp_read_header_g.data_size, ctxt.module_id, ctxt.rnti, rab_id); } } else { // rb_id =0, thus interpreated as broadcast and transported as multiple unicast // is a broadcast packet, we have to send this packet on all default RABS of all connected UEs //#warning CODE TO BE REVIEWED, ONLY WORK FOR SIMPLE TOPOLOGY CASES for (ue_id = 0; ue_id < NB_UE_INST; ue_id++) { if (oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt_cpy.module_id][ue_id] != NOT_A_RNTI) { ctxt.rnti = oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt_cpy.module_id][ue_id]; LOG_D(PDCP, "[FRAME %5u][eNB][IP][INSTANCE %u][RB %u][--- PDCP_DATA_REQ / %d Bytes --->][PDCP][MOD %u][UE %u][RB DEFAULT_RAB_ID %u]\n", ctxt.frame, pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, pdcp_read_header_g.data_size, ctxt.module_id, ctxt.rnti, DEFAULT_RAB_ID); pdcp_data_req ( &ctxt, SRB_FLAG_NO, DEFAULT_RAB_ID, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, pdcp_read_header_g.data_size, (unsigned char *)NLMSG_DATA(nas_nlh_rx), PDCP_TRANSMISSION_MODE_DATA); } } } } else { // enb_flag if (rab_id != 0) { if (rab_id == UE_IP_DEFAULT_RAB_ID) { LOG_D(PDCP, "PDCP_COLL_KEY_DEFAULT_DRB_VALUE(module_id=%d, rnti=%x, enb_flag=%d)\n", ctxt.module_id, ctxt.rnti, ctxt.enb_flag); key = PDCP_COLL_KEY_DEFAULT_DRB_VALUE(ctxt.module_id, ctxt.rnti, ctxt.enb_flag); h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p); } else { rab_id = rab_id % maxDRB; LOG_D(PDCP, "PDCP_COLL_KEY_VALUE(module_id=%d, rnti=%x, enb_flag=%d, rab_id=%d, SRB_FLAG=%d)\n", ctxt.module_id, ctxt.rnti, ctxt.enb_flag, rab_id, SRB_FLAG_NO); key = PDCP_COLL_KEY_VALUE(ctxt.module_id, ctxt.rnti, ctxt.enb_flag, rab_id, SRB_FLAG_NO); h_rc = hashtable_get(pdcp_coll_p, key, (void**)&pdcp_p); } if (h_rc == HASH_TABLE_OK) { rab_id = pdcp_p->rb_id; #ifdef PDCP_DEBUG LOG_D(PDCP, "[FRAME %5u][UE][NETLINK][IP->PDCP] INST %d: Received socket with length %d (nlmsg_len = %zu) on Rab %d \n", ctxt.frame, pdcp_read_header_g.inst, len, nas_nlh_rx->nlmsg_len-sizeof(struct nlmsghdr), pdcp_read_header_g.rb_id); LOG_D(PDCP, "[FRAME %5u][UE][IP][INSTANCE %u][RB %u][--- PDCP_DATA_REQ / %d Bytes --->][PDCP][MOD %u][UE %u][RB %u]\n", ctxt.frame, pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, pdcp_read_header_g.data_size, ctxt.module_id, ctxt.rnti, rab_id); #endif MSC_LOG_RX_MESSAGE( (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE, (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_IP_ENB:MSC_IP_UE, NULL, 0, MSC_AS_TIME_FMT" DATA-REQ inst %u rb %u rab %u size %u", MSC_AS_TIME_ARGS(ctxt_pP), pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, rab_id, pdcp_read_header_g.data_size); pdcp_data_req( &ctxt, SRB_FLAG_NO, rab_id, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, pdcp_read_header_g.data_size, (unsigned char *)NLMSG_DATA(nas_nlh_rx), PDCP_TRANSMISSION_MODE_DATA); } else { MSC_LOG_RX_DISCARDED_MESSAGE( (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE, (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_IP_ENB:MSC_IP_UE, NULL, 0, MSC_AS_TIME_FMT" DATA-REQ inst %u rb %u rab %u size %u", MSC_AS_TIME_ARGS(ctxt_pP), pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, rab_id, pdcp_read_header_g.data_size); LOG_D(PDCP, "[FRAME %5u][UE][IP][INSTANCE %u][RB %u][--- PDCP_DATA_REQ / %d Bytes ---X][PDCP][MOD %u][UE %u][RB %u] NON INSTANCIATED INSTANCE key 0x%"PRIx64", DROPPED\n", ctxt.frame, pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, pdcp_read_header_g.data_size, ctxt.module_id, ctxt.rnti, rab_id, key); } } else { LOG_D(PDCP, "Forcing send on DEFAULT_RAB_ID\n"); LOG_D(PDCP, "[FRAME %5u][eNB][IP][INSTANCE %u][RB %u][--- PDCP_DATA_REQ / %d Bytes --->][PDCP][MOD %u][UE %u][RB DEFAULT_RAB_ID %u]\n", ctxt.frame, pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, pdcp_read_header_g.data_size, ctxt.module_id, ctxt.rnti, DEFAULT_RAB_ID); MSC_LOG_RX_MESSAGE( (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_PDCP_ENB:MSC_PDCP_UE, (ctxt_pP->enb_flag == ENB_FLAG_YES) ? MSC_IP_ENB:MSC_IP_UE, NULL,0, MSC_AS_TIME_FMT" DATA-REQ inst %u rb %u default rab %u size %u", MSC_AS_TIME_ARGS(ctxt_pP), pdcp_read_header_g.inst, pdcp_read_header_g.rb_id, DEFAULT_RAB_ID, pdcp_read_header_g.data_size); pdcp_data_req ( &ctxt, SRB_FLAG_NO, DEFAULT_RAB_ID, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, pdcp_read_header_g.data_size, (unsigned char *)NLMSG_DATA(nas_nlh_rx), PDCP_TRANSMISSION_MODE_DATA); } } } } } VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PDCP_FIFO_READ, 0 ); } return len; # endif #else // neither PDCP_USE_NETLINK nor PDCP_USE_RT_FIFO return 0; #endif // PDCP_USE_NETLINK } void pdcp_fifo_read_input_sdus_from_otg (const protocol_ctxt_t* const ctxt_pP) { unsigned char *otg_pkt=NULL; module_id_t dst_id; // dst for otg rb_id_t rb_id; unsigned int pkt_size=0; #if defined(USER_MODE) && defined(OAI_EMU) module_id_t src_id; static unsigned int pkt_cnt_enb=0, pkt_cnt_ue=0; Packet_otg_elt_t *otg_pkt_info=NULL; int result; uint8_t pdcp_mode, is_ue=0; #endif protocol_ctxt_t ctxt; // we need to add conditions to avoid transmitting data when the UE is not RRC connected. #if defined(USER_MODE) && defined(OAI_EMU) if (oai_emulation.info.otg_enabled ==1 ) { // module_id is source id while ((otg_pkt_info = pkt_list_remove_head(&(otg_pdcp_buffer[ctxt_pP->instance]))) != NULL) { LOG_I(OTG,"Mod_id %d Frame %d Got a packet (%p), HEAD of otg_pdcp_buffer[%d] is %p and Nb elements is %d\n", ctxt_pP->module_id, ctxt_pP->frame, otg_pkt_info, ctxt_pP->instance, pkt_list_get_head(&(otg_pdcp_buffer[ctxt_pP->instance])), otg_pdcp_buffer[ctxt_pP->instance].nb_elements); //otg_pkt_info = pkt_list_remove_head(&(otg_pdcp_buffer[module_id])); dst_id = (otg_pkt_info->otg_pkt).dst_id; // type is module_id_t src_id = (otg_pkt_info->otg_pkt).module_id; // type is module_id_t rb_id = (otg_pkt_info->otg_pkt).rb_id; is_ue = (otg_pkt_info->otg_pkt).is_ue; pdcp_mode = (otg_pkt_info->otg_pkt).mode; // LOG_I(PDCP,"pdcp_fifo, pdcp mode is= %d\n",pdcp_mode); // generate traffic if the ue is rrc reconfigured state // if (mac_get_rrc_status(module_id, ctxt_pP->enb_flag, dst_id ) > 2 /*RRC_CONNECTED*/) { // not needed: this test is already done in update_otg_enb otg_pkt = (unsigned char*) (otg_pkt_info->otg_pkt).sdu_buffer; pkt_size = (otg_pkt_info->otg_pkt).sdu_buffer_size; if (otg_pkt != NULL) { if (is_ue == 0 ) { PROTOCOL_CTXT_SET_BY_MODULE_ID( &ctxt, src_id, ENB_FLAG_YES, oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt.module_id][dst_id], ctxt_pP->frame, ctxt_pP->subframe, src_id); LOG_D(OTG,"[eNB %d] Frame %d sending packet %d from module %d on rab id %d (src %d, dst %d/%x) pkt size %d for pdcp mode %d\n", ctxt.module_id, ctxt.frame, pkt_cnt_enb++, src_id, rb_id, src_id, dst_id, oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt.module_id][dst_id], pkt_size, pdcp_mode); result = pdcp_data_req(&ctxt, SRB_FLAG_NO, rb_id, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, pkt_size, otg_pkt, pdcp_mode); if (result != TRUE) { LOG_W(OTG,"PDCP data request failed!\n"); } } else { //rb_id= eNB_index * MAX_NUM_RB + DTCH; LOG_D(OTG,"[UE %d] Frame %d: sending packet %d from module %d on rab id %d (src %d/%x, dst %d) pkt size %d\n", ctxt_pP->module_id, ctxt_pP->frame, pkt_cnt_ue++, ctxt_pP->module_id, rb_id, src_id, pdcp_UE_UE_module_id_to_rnti[ctxt_pP->module_id], // [src_id] dst_id, pkt_size); PROTOCOL_CTXT_SET_BY_MODULE_ID( &ctxt, ctxt_pP->module_id, //src_id, ENB_FLAG_NO, pdcp_UE_UE_module_id_to_rnti[ctxt_pP->module_id],// [src_id] ctxt_pP->frame, ctxt_pP->subframe, dst_id); result = pdcp_data_req( &ctxt, SRB_FLAG_NO, rb_id, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, pkt_size, otg_pkt, PDCP_TRANSMISSION_MODE_DATA); if (result != TRUE) { LOG_W(OTG,"PDCP data request failed!\n"); } } free(otg_pkt); otg_pkt = NULL; } // } //else LOG_D(OTG,"ctxt_pP->frame %d enb %d-> ue %d link not yet established state %d \n", ctxt_pP->frame, eNB_index,dst_id - NB_eNB_INST, mac_get_rrc_status(module_id, ctxt_pP->enb_flag, dst_id - NB_eNB_INST)); } } #else if ((otg_enabled==1) && (ctxt_pP->enb_flag == ENB_FLAG_YES)) { // generate DL traffic unsigned int ctime=0; ctime = ctxt_pP->frame * 100; /*if ((mac_get_rrc_status(eNB_index, ctxt_pP->enb_flag, 0 ) > 2) && (mac_get_rrc_status(eNB_index, ctxt_pP->enb_flag, 1 ) > 2)) { */ PROTOCOL_CTXT_SET_BY_MODULE_ID( &ctxt, ctxt_pP->module_id, ctxt_pP->enb_flag, NOT_A_RNTI, ctxt_pP->frame, ctxt_pP->subframe, ctxt_pP->module_id); for (dst_id = 0; dst_id<NUMBER_OF_UE_MAX; dst_id++) { ctxt.rnti = oai_emulation.info.eNB_ue_module_id_to_rnti[ctxt.module_id][dst_id]; if (ctxt.rnti != NOT_A_RNTI) { if (mac_eNB_get_rrc_status(ctxt.module_id, ctxt.rnti ) > 2 /*RRC_SI_RECEIVED*/) { unsigned int temp = 0; otg_pkt=packet_gen( ENB_MODULE_ID_TO_INSTANCE(ctxt.module_id), UE_MODULE_ID_TO_INSTANCE(dst_id), 0, ctime, &temp); pkt_size = temp; if (otg_pkt != NULL) { rb_id = dst_id * maxDRB + DTCH; pdcp_data_req(&ctxt, SRB_FLAG_NO, rb_id, RLC_MUI_UNDEFINED, RLC_SDU_CONFIRM_NO, pkt_size, otg_pkt, PDCP_TRANSMISSION_MODE_DATA); LOG_I(OTG, "send packet from module %d on rab id %d (src %d, dst %d) pkt size %d\n", ctxt_pP->module_id, rb_id, ctxt_pP->module_id, dst_id, pkt_size); free(otg_pkt); } } } } } #endif }