/** * * \section COPYRIGHT * * Copyright 2013-2015 Software Radio Systems Limited * * \section LICENSE * * This file is part of the srsUE library. * * srsUE is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * srsUE is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * A copy of the GNU Affero General Public License can be found in * the LICENSE file in the top-level directory of this distribution * and at http://www.gnu.org/licenses/. * */ #ifndef SRSLTE_COMMON_H #define SRSLTE_COMMON_H /******************************************************************************* INCLUDES *******************************************************************************/ #include #include /******************************************************************************* DEFINES *******************************************************************************/ #define SRSLTE_UE_CATEGORY 4 #define SRSLTE_N_SRB 3 #define SRSLTE_N_DRB 8 #define SRSLTE_N_RADIO_BEARERS 11 #define HARQ_DELAY_MS 4 #define MSG3_DELAY_MS 2 // Delay added to HARQ_DELAY_MS #define TTI_RX(tti) (tti>HARQ_DELAY_MS?((tti-HARQ_DELAY_MS)%10240):(10240+tti-HARQ_DELAY_MS)) #define TTI_TX(tti) ((tti+HARQ_DELAY_MS)%10240) #define TTI_RX_ACK(tti) ((tti+(2*HARQ_DELAY_MS))%10240) #define UL_PIDOF(tti) (tti%(2*HARQ_DELAY_MS)) #define TTIMOD_SZ (((2*HARQ_DELAY_MS) < 10)?10:20) #define TTIMOD(tti) (tti%TTIMOD_SZ) #define ASYNC_DL_SCHED (HARQ_DELAY_MS <= 4) // Cat 3 UE - Max number of DL-SCH transport block bits received within a TTI // 3GPP 36.306 Table 4.1.1 #define SRSLTE_MAX_BUFFER_SIZE_BITS 102048 #define SRSLTE_MAX_BUFFER_SIZE_BYTES 12756 #define SRSLTE_BUFFER_HEADER_OFFSET 1020 #define SRSLTE_BUFFER_POOL_LOG_ENABLED #ifdef SRSLTE_BUFFER_POOL_LOG_ENABLED #define pool_allocate (pool->allocate(__FUNCTION__)) #define SRSLTE_BUFFER_POOL_LOG_NAME_LEN 128 #else #define pool_allocate (pool->allocate()) #endif #include "srslte/srslte.h" /******************************************************************************* TYPEDEFS *******************************************************************************/ namespace srslte { typedef enum{ ERROR_NONE = 0, ERROR_INVALID_PARAMS, ERROR_INVALID_COMMAND, ERROR_OUT_OF_BOUNDS, ERROR_CANT_START, ERROR_ALREADY_STARTED, ERROR_N_ITEMS, }error_t; static const char error_text[ERROR_N_ITEMS][20] = { "None", "Invalid parameters", "Invalid command", "Out of bounds", "Can't start", "Already started"}; //#define ENABLE_TIMESTAMP /****************************************************************************** * Byte and Bit buffers * * Generic buffers with headroom to accommodate packet headers and custom * copy constructors & assignment operators for quick copying. Byte buffer * holds a next pointer to support linked lists. *****************************************************************************/ class byte_buffer_t{ public: uint32_t N_bytes; uint8_t buffer[SRSLTE_MAX_BUFFER_SIZE_BYTES]; uint8_t *msg; #ifdef SRSLTE_BUFFER_POOL_LOG_ENABLED char debug_name[SRSLTE_BUFFER_POOL_LOG_NAME_LEN]; #endif byte_buffer_t():N_bytes(0) { bzero(buffer, SRSLTE_MAX_BUFFER_SIZE_BYTES); timestamp_is_set = false; msg = &buffer[SRSLTE_BUFFER_HEADER_OFFSET]; next = NULL; #ifdef SRSLTE_BUFFER_POOL_LOG_ENABLED bzero(debug_name, SRSLTE_BUFFER_POOL_LOG_NAME_LEN); #endif } byte_buffer_t(const byte_buffer_t& buf) { bzero(buffer, SRSLTE_MAX_BUFFER_SIZE_BYTES); N_bytes = buf.N_bytes; memcpy(msg, buf.msg, N_bytes); } byte_buffer_t & operator= (const byte_buffer_t & buf) { // avoid self assignment if (&buf == this) return *this; bzero(buffer, SRSLTE_MAX_BUFFER_SIZE_BYTES); N_bytes = buf.N_bytes; memcpy(msg, buf.msg, N_bytes); return *this; } void reset() { msg = &buffer[SRSLTE_BUFFER_HEADER_OFFSET]; N_bytes = 0; timestamp_is_set = false; } uint32_t get_headroom() { return msg-buffer; } // Returns the remaining space from what is reported to be the length of msg uint32_t get_tailroom() { return (sizeof(buffer) - (msg-buffer) - N_bytes); } long get_latency_us() { #ifdef ENABLE_TIMESTAMP if(!timestamp_is_set) return 0; gettimeofday(×tamp[2], NULL); get_time_interval(timestamp); return timestamp[0].tv_usec; #else return 0; #endif } void set_timestamp() { #ifdef ENABLE_TIMESTAMP gettimeofday(×tamp[1], NULL); timestamp_is_set = true; #endif } private: struct timeval timestamp[3]; bool timestamp_is_set; byte_buffer_t *next; }; struct bit_buffer_t{ uint32_t N_bits; uint8_t buffer[SRSLTE_MAX_BUFFER_SIZE_BITS]; uint8_t *msg; #ifdef SRSLTE_BUFFER_POOL_LOG_ENABLED char debug_name[128]; #endif bit_buffer_t():N_bits(0) { msg = &buffer[SRSLTE_BUFFER_HEADER_OFFSET]; } bit_buffer_t(const bit_buffer_t& buf){ N_bits = buf.N_bits; memcpy(msg, buf.msg, N_bits); } bit_buffer_t & operator= (const bit_buffer_t & buf){ // avoid self assignment if (&buf == this) return *this; N_bits = buf.N_bits; memcpy(msg, buf.msg, N_bits); return *this; } void reset() { msg = &buffer[SRSLTE_BUFFER_HEADER_OFFSET]; N_bits = 0; timestamp_is_set = false; } uint32_t get_headroom() { return msg-buffer; } long get_latency_us() { #ifdef ENABLE_TIMESTAMP if(!timestamp_is_set) return 0; gettimeofday(×tamp[2], NULL); return timestamp[0].tv_usec; #else return 0; #endif } void set_timestamp() { #ifdef ENABLE_TIMESTAMP gettimeofday(×tamp[1], NULL); timestamp_is_set = true; #endif } private: struct timeval timestamp[3]; bool timestamp_is_set; }; } // namespace srslte #endif // SRSLTE_COMMON_H