diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c index d507385dd4..4163d99c34 100644 --- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c +++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c @@ -1,483 +1,483 @@ -/******************************************************************************* - OpenAirInterface - Copyright(c) 1999 - 2014 Eurecom - - OpenAirInterface is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - - OpenAirInterface 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with OpenAirInterface.The full GNU General Public License is - included in this distribution in the file called "COPYING". If not, - see . - - Contact Information - OpenAirInterface Admin: openair_admin@eurecom.fr - OpenAirInterface Tech : openair_tech@eurecom.fr - OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr - - Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE - - *******************************************************************************/ -/*! \file ethernet_lib.c - * \brief API to stream I/Q samples over standard ethernet - * \author add alcatel Katerina Trilyraki, Navid Nikaein, Pedro Dinis, Lucio Ferreira, Raymond Knopp - * \date 2015 - * \version 0.2 - * \company Eurecom - * \maintainer: navid.nikaein@eurecom.fr - * \note - * \warning - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "vcd_signal_dumper.h" - -#include "common_lib.h" -#include "ethernet_lib.h" - -#define DEBUG 0 -//struct sockaddr_in dest_addr[MAX_INST]; -//struct sockaddr_in local_addr[MAX_INST]; -//int addr_len[MAX_INST]; - - -uint16_t pck_seq_num = 1; -uint16_t pck_seq_num_cur=0; -uint16_t pck_seq_num_prev=0; - -int eth_socket_init_udp(openair0_device *device) { - - eth_state_t *eth = (eth_state_t*)device->priv; - char str_local[INET_ADDRSTRLEN]; - char str_remote[INET_ADDRSTRLEN]; - const char *local_ip, *remote_ip; - int local_port=0, remote_port=0; - int sock_dom=0; - int sock_type=0; - int sock_proto=0; - int enable=1; - - if (device->host_type == RRH_HOST ) { - local_ip = device->openair0_cfg->my_addr; - local_port = device->openair0_cfg->my_port; - remote_ip = "0.0.0.0"; - remote_port = 0; - printf("[%s] local ip addr %s port %d\n", "RRH", local_ip, local_port); - } else { - local_ip = device->openair0_cfg->my_addr; - local_port = device->openair0_cfg->my_port; - remote_ip = device->openair0_cfg->remote_addr; - remote_port = device->openair0_cfg->remote_port; - printf("[%s] local ip addr %s port %d\n","BBU", local_ip, local_port); - } - - /* Open socket to send on */ - sock_dom=AF_INET; - sock_type=SOCK_DGRAM; - sock_proto=IPPROTO_UDP; - - if ((eth->sockfd = socket(sock_dom, sock_type, sock_proto)) == -1) { - perror("ETHERNET: Error opening socket"); - exit(0); - } - - /* initialize addresses */ - bzero((void *)&(eth->dest_addr), sizeof(eth->dest_addr)); - bzero((void *)&(eth->local_addr), sizeof(eth->local_addr)); - - - eth->addr_len = sizeof(struct sockaddr_in); - - eth->dest_addr.sin_family = AF_INET; - inet_pton(AF_INET,remote_ip,&(eth->dest_addr.sin_addr.s_addr)); - eth->dest_addr.sin_port=htons(remote_port); - inet_ntop(AF_INET, &(eth->dest_addr.sin_addr), str_remote, INET_ADDRSTRLEN); - - - eth->local_addr.sin_family = AF_INET; - inet_pton(AF_INET,local_ip,&(eth->local_addr.sin_addr.s_addr)); - eth->local_addr.sin_port=htons(local_port); - inet_ntop(AF_INET, &(eth->local_addr.sin_addr), str_local, INET_ADDRSTRLEN); - - - /* set reuse address flag */ - if (setsockopt(eth->sockfd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int))) { - perror("ETHERNET: Cannot set SO_REUSEADDR option on socket"); - exit(0); - } - - /* want to receive -> so bind */ - if (bind(eth->sockfd,(struct sockaddr *)ð->local_addr,eth->addr_len)<0) { - perror("ETHERNET: Cannot bind to socket"); - exit(0); - } else { - printf("[%s] binding to %s:%d\n","RRH",str_local,ntohs(eth->local_addr.sin_port)); - } - - return 0; -} - -int trx_eth_read_udp_IF4p5(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc) { - - // Read nblocks info from packet itself - int nblocks = nsamps; - int bytes_received=-1; - eth_state_t *eth = (eth_state_t*)device->priv; - - ssize_t packet_size = sizeof_IF4p5_header_t; - IF4p5_header_t *test_header = (IF4p5_header_t*)(buff[0]); - - int block_cnt=0; - int again_cnt=0; - packet_size = max(UDP_IF4p5_PRACH_SIZE_BYTES, max(UDP_IF4p5_PULFFT_SIZE_BYTES(nblocks), UDP_IF4p5_PDLFFT_SIZE_BYTES(nblocks))); - - while(bytes_received == -1) { - again: - bytes_received = recvfrom(eth->sockfd, - buff[0], - packet_size, - 0, - (struct sockaddr *)ð->dest_addr, - (socklen_t *)ð->addr_len); - if (bytes_received ==-1) { - eth->num_rx_errors++; - if (errno == EAGAIN) { - /* - again_cnt++; - usleep(10); - if (again_cnt == 1000) { - perror("ETHERNET IF4p5 READ (EAGAIN): "); - exit(-1); - } else { - printf("AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN \n"); - goto again; - } - */ - printf("Lost IF4p5 connection with %s\n", inet_ntoa(eth->dest_addr.sin_addr)); - exit(-1); - } else if (errno == EWOULDBLOCK) { - block_cnt++; - usleep(10); - if (block_cnt == 1000) { - perror("ETHERNET IF4p5 READ (EWOULDBLOCK): "); - exit(-1); - } else { - printf("BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK \n"); - goto again; - } - } else { - perror("ETHERNET IF4p5 READ"); - printf("(%s):\n", strerror(errno)); - exit(-1); - } - } else { - *timestamp = test_header->sub_type; - eth->rx_actual_nsamps = bytes_received>>1; - eth->rx_count++; - } - } - //printf("size of third %d subtype %d frame %d subframe %d symbol %d \n", bytes_received, test_header->sub_type, ((test_header->frame_status)>>6)&0xffff, ((test_header->frame_status)>>22)&0x000f, ((test_header->frame_status)>>26)&0x000f) ; - - eth->rx_nsamps = nsamps; - return(bytes_received); -} - -int trx_eth_write_udp_IF4p5(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int cc, int flags) { - - int nblocks = nsamps; - int bytes_sent = 0; - - eth_state_t *eth = (eth_state_t*)device->priv; - - ssize_t packet_size; - - if (flags == IF4p5_PDLFFT) { - packet_size = UDP_IF4p5_PDLFFT_SIZE_BYTES(nblocks); - } else if (flags == IF4p5_PULFFT) { - packet_size = UDP_IF4p5_PULFFT_SIZE_BYTES(nblocks); - } else if (flags == IF4p5_PRACH) { - packet_size = UDP_IF4p5_PRACH_SIZE_BYTES; - } else { - printf("trx_eth_write_udp_IF4p5: unknown flags %d\n",flags); - return(-1); - } - - eth->tx_nsamps = nblocks; - - bytes_sent = sendto(eth->sockfd, - buff[0], - packet_size, - 0, - (struct sockaddr*)ð->dest_addr, - eth->addr_len); - - if (bytes_sent == -1) { - eth->num_tx_errors++; - perror("ETHERNET WRITE: "); - exit(-1); - } else { - eth->tx_actual_nsamps = bytes_sent>>1; - eth->tx_count++; - } - - return (bytes_sent); -} - -int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps,int cc, int flags) { - - int bytes_sent=0; - eth_state_t *eth = (eth_state_t*)device->priv; - int sendto_flag =0; - int i=0; - //sendto_flag|=flags; - eth->tx_nsamps=nsamps; - - for (i=0;ipck_header.seq_num = pck_seq_num; - //eth->pck_header.antenna_id = 1+(i<<1); - //eth->pck_header.timestamp = timestamp; - *(uint16_t *)buff2 = pck_seq_num; - *(uint16_t *)(buff2 + sizeof(uint16_t)) = 1+(i<<1); - *(openair0_timestamp *)(buff2 + sizeof(int32_t)) = timestamp; - VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TX_SEQ_NUM, pck_seq_num); - - while(bytes_sent < UDP_PACKET_SIZE_BYTES(nsamps)) { -#if DEBUG - printf("------- TX ------: buff2 current position=%d remaining_bytes=%d bytes_sent=%d \n", - (void *)(buff2+bytes_sent), - UDP_PACKET_SIZE_BYTES(nsamps) - bytes_sent, - bytes_sent); -#endif - /* Send packet */ - bytes_sent += sendto(eth->sockfd, - buff2, - UDP_PACKET_SIZE_BYTES(nsamps), - sendto_flag, - (struct sockaddr*)ð->dest_addr, - eth->addr_len); - - if ( bytes_sent == -1) { - eth->num_tx_errors++; - perror("ETHERNET WRITE: "); - exit(-1); - } else { -#if DEBUG - printf("------- TX ------: nu=%d an_id=%d ts%d bytes_send=%d\n", - *(int16_t *)buff2, - *(int16_t *)(buff2 + sizeof(int16_t)), - *(openair0_timestamp *)(buff2 + sizeof(int32_t)), - bytes_sent); - dump_packet((device->host_type == BBU_HOST)? "BBU":"RRH", buff2, UDP_PACKET_SIZE_BYTES(nsamps), TX_FLAG); -#endif - eth->tx_actual_nsamps=bytes_sent>>2; - eth->tx_count++; - pck_seq_num++; - if ( pck_seq_num > MAX_PACKET_SEQ_NUM(nsamps,device->openair0_cfg->samples_per_frame) ) pck_seq_num = 1; - } - } - /* tx buffer values restored */ - *(int32_t *)buff2 = temp0; - *(openair0_timestamp *)(buff2 + sizeof(int32_t)) = temp1; - } - - return (bytes_sent-APP_HEADER_SIZE_BYTES)>>2; -} - - - -int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc) { - - int bytes_received=0; - eth_state_t *eth = (eth_state_t*)device->priv; - // openair0_timestamp prev_timestamp = -1; - int rcvfrom_flag =0; - int block_cnt=0; - int again_cnt=0; - int i=0; - - eth->rx_nsamps=nsamps; - - for (i=0;isockfd, - buff2, - UDP_PACKET_SIZE_BYTES(nsamps), - rcvfrom_flag, - (struct sockaddr *)ð->dest_addr, - (socklen_t *)ð->addr_len); - - if (bytes_received ==-1) { - eth->num_rx_errors++; - if (errno == EAGAIN) { - again_cnt++; - usleep(10); - if (again_cnt == 1000) { - perror("ETHERNET READ: "); - exit(-1); - } else { - printf("AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN \n"); - goto again; - } - } else if (errno == EWOULDBLOCK) { - block_cnt++; - usleep(10); - if (block_cnt == 1000) { - perror("ETHERNET READ: "); - exit(-1); - } else { - printf("BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK \n"); - goto again; - } - } - } else { -#if DEBUG - printf("------- RX------: nu=%d an_id=%d ts%d bytes_recv=%d\n", - *(int16_t *)buff2, - *(int16_t *)(buff2 + sizeof(int16_t)), - *(openair0_timestamp *)(buff2 + sizeof(int32_t)), - bytes_received); - dump_packet((device->host_type == BBU_HOST)? "BBU":"RRH", buff2, UDP_PACKET_SIZE_BYTES(nsamps),RX_FLAG); -#endif - - /* store the timestamp value from packet's header */ - *timestamp = *(openair0_timestamp *)(buff2 + sizeof(int32_t)); - /* store the sequence number of the previous packet received */ - if (pck_seq_num_cur == 0) { - pck_seq_num_prev = *(uint16_t *)buff2; - } else { - pck_seq_num_prev = pck_seq_num_cur; - } - /* get the packet sequence number from packet's header */ - pck_seq_num_cur = *(uint16_t *)buff2; - //printf("cur=%d prev=%d buff=%d\n",pck_seq_num_cur,pck_seq_num_prev,*(uint16_t *)(buff2)); - if ( ( pck_seq_num_cur != (pck_seq_num_prev + 1) ) && !((pck_seq_num_prev==MAX_PACKET_SEQ_NUM(nsamps,device->openair0_cfg->samples_per_frame)) && (pck_seq_num_cur==1 )) && !((pck_seq_num_prev==1) && (pck_seq_num_cur==1))) { - printf("out of order packet received1! %d|%d|%d\n",pck_seq_num_cur,pck_seq_num_prev,(int)*timestamp); - } - VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RX_SEQ_NUM,pck_seq_num_cur); - VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RX_SEQ_NUM_PRV,pck_seq_num_prev); - eth->rx_actual_nsamps=bytes_received>>2; - eth->rx_count++; - } - - } - /* tx buffer values restored */ - *(int32_t *)buff2 = temp0; - *(openair0_timestamp *)(buff2 + sizeof(int32_t)) = temp1; - - } - return (bytes_received-APP_HEADER_SIZE_BYTES)>>2; -} - - - - -int eth_set_dev_conf_udp(openair0_device *device) { - - eth_state_t *eth = (eth_state_t*)device->priv; - void *msg; - ssize_t msg_len; - - - /* a BBU client sents to RRH a set of configuration parameters (openair0_config_t) - so that RF front end is configured appropriately and - frame/packet size etc. can be set */ - - msg=malloc(sizeof(openair0_config_t)); - msg_len=sizeof(openair0_config_t); - memcpy(msg,(void*)device->openair0_cfg,msg_len); - - if (sendto(eth->sockfd,msg,msg_len,0,(struct sockaddr *)ð->dest_addr,eth->addr_len)==-1) { - perror("ETHERNET: sendto conf_udp"); - printf("addr_len : %d, msg_len %d\n",eth->addr_len,msg_len); - exit(0); - } - - return 0; -} - -int eth_get_dev_conf_udp(openair0_device *device) { - - eth_state_t *eth = (eth_state_t*)device->priv; - char str1[INET_ADDRSTRLEN],str[INET_ADDRSTRLEN]; - void *msg; - ssize_t msg_len; - - msg=malloc(sizeof(openair0_config_t)); - msg_len=sizeof(openair0_config_t); - - inet_ntop(AF_INET, &(eth->local_addr.sin_addr), str, INET_ADDRSTRLEN); - inet_ntop(AF_INET, &(eth->dest_addr.sin_addr), str1, INET_ADDRSTRLEN); - - /* RRH receives from BBU openair0_config_t */ - if (recvfrom(eth->sockfd, - msg, - msg_len, - 0, - (struct sockaddr *)ð->dest_addr, - (socklen_t *)ð->addr_len)==-1) { - perror("ETHERNET: recv_from conf_udp"); - exit(0); - } - device->openair0_cfg=(openair0_config_t *)msg; - - /* get remote ip address and port */ - /* inet_ntop(AF_INET, &(eth->dest_addr.sin_addr), str1, INET_ADDRSTRLEN); */ - /* device->openair0_cfg->remote_port =ntohs(eth->dest_addr.sin_port); */ - /* device->openair0_cfg->remote_addr =str1; */ - - /* /\* restore local ip address and port *\/ */ - /* inet_ntop(AF_INET, &(eth->local_addr.sin_addr), str, INET_ADDRSTRLEN); */ - /* device->openair0_cfg->my_port =ntohs(eth->local_addr.sin_port); */ - /* device->openair0_cfg->my_addr =str; */ - - /* printf("[RRH] mod_%d socket %d connected to BBU %s:%d %s:%d\n", Mod_id, eth->sockfd,str1, device->openair0_cfg->remote_port, str, device->openair0_cfg->my_port); */ - return 0; -} +/******************************************************************************* + OpenAirInterface + Copyright(c) 1999 - 2014 Eurecom + + OpenAirInterface is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + + OpenAirInterface 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with OpenAirInterface.The full GNU General Public License is + included in this distribution in the file called "COPYING". If not, + see . + + Contact Information + OpenAirInterface Admin: openair_admin@eurecom.fr + OpenAirInterface Tech : openair_tech@eurecom.fr + OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr + + Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE + + *******************************************************************************/ +/*! \file ethernet_lib.c + * \brief API to stream I/Q samples over standard ethernet + * \author add alcatel Katerina Trilyraki, Navid Nikaein, Pedro Dinis, Lucio Ferreira, Raymond Knopp + * \date 2015 + * \version 0.2 + * \company Eurecom + * \maintainer: navid.nikaein@eurecom.fr + * \note + * \warning + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "vcd_signal_dumper.h" + +#include "common_lib.h" +#include "ethernet_lib.h" + +#define DEBUG 0 +//struct sockaddr_in dest_addr[MAX_INST]; +//struct sockaddr_in local_addr[MAX_INST]; +//int addr_len[MAX_INST]; + + +uint16_t pck_seq_num = 1; +uint16_t pck_seq_num_cur=0; +uint16_t pck_seq_num_prev=0; + +int eth_socket_init_udp(openair0_device *device) { + + eth_state_t *eth = (eth_state_t*)device->priv; + char str_local[INET_ADDRSTRLEN]; + char str_remote[INET_ADDRSTRLEN]; + const char *local_ip, *remote_ip; + int local_port=0, remote_port=0; + int sock_dom=0; + int sock_type=0; + int sock_proto=0; + int enable=1; + + if (device->host_type == RRH_HOST ) { + local_ip = device->openair0_cfg->my_addr; + local_port = device->openair0_cfg->my_port; + remote_ip = "0.0.0.0"; + remote_port = 0; + printf("[%s] local ip addr %s port %d\n", "RRH", local_ip, local_port); + } else { + local_ip = device->openair0_cfg->my_addr; + local_port = device->openair0_cfg->my_port; + remote_ip = device->openair0_cfg->remote_addr; + remote_port = device->openair0_cfg->remote_port; + printf("[%s] local ip addr %s port %d\n","BBU", local_ip, local_port); + } + + /* Open socket to send on */ + sock_dom=AF_INET; + sock_type=SOCK_DGRAM; + sock_proto=IPPROTO_UDP; + + if ((eth->sockfd = socket(sock_dom, sock_type, sock_proto)) == -1) { + perror("ETHERNET: Error opening socket"); + exit(0); + } + + /* initialize addresses */ + bzero((void *)&(eth->dest_addr), sizeof(eth->dest_addr)); + bzero((void *)&(eth->local_addr), sizeof(eth->local_addr)); + + + eth->addr_len = sizeof(struct sockaddr_in); + + eth->dest_addr.sin_family = AF_INET; + inet_pton(AF_INET,remote_ip,&(eth->dest_addr.sin_addr.s_addr)); + eth->dest_addr.sin_port=htons(remote_port); + inet_ntop(AF_INET, &(eth->dest_addr.sin_addr), str_remote, INET_ADDRSTRLEN); + + + eth->local_addr.sin_family = AF_INET; + inet_pton(AF_INET,local_ip,&(eth->local_addr.sin_addr.s_addr)); + eth->local_addr.sin_port=htons(local_port); + inet_ntop(AF_INET, &(eth->local_addr.sin_addr), str_local, INET_ADDRSTRLEN); + + + /* set reuse address flag */ + if (setsockopt(eth->sockfd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int))) { + perror("ETHERNET: Cannot set SO_REUSEADDR option on socket"); + exit(0); + } + + /* want to receive -> so bind */ + if (bind(eth->sockfd,(struct sockaddr *)ð->local_addr,eth->addr_len)<0) { + perror("ETHERNET: Cannot bind to socket"); + exit(0); + } else { + printf("[%s] binding to %s:%d\n","RRH",str_local,ntohs(eth->local_addr.sin_port)); + } + + return 0; +} + +int trx_eth_read_udp_IF4p5(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc) { + + // Read nblocks info from packet itself + int nblocks = nsamps; + int bytes_received=-1; + eth_state_t *eth = (eth_state_t*)device->priv; + + ssize_t packet_size = sizeof_IF4p5_header_t; + IF4p5_header_t *test_header = (IF4p5_header_t*)(buff[0]); + + int block_cnt=0; + int again_cnt=0; + packet_size = max(UDP_IF4p5_PRACH_SIZE_BYTES, max(UDP_IF4p5_PULFFT_SIZE_BYTES(nblocks), UDP_IF4p5_PDLFFT_SIZE_BYTES(nblocks))); + + while(bytes_received == -1) { + again: + bytes_received = recvfrom(eth->sockfd, + buff[0], + packet_size, + 0, + (struct sockaddr *)ð->dest_addr, + (socklen_t *)ð->addr_len); + if (bytes_received ==-1) { + eth->num_rx_errors++; + if (errno == EAGAIN) { + /* + again_cnt++; + usleep(10); + if (again_cnt == 1000) { + perror("ETHERNET IF4p5 READ (EAGAIN): "); + exit(-1); + } else { + printf("AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN \n"); + goto again; + } + */ + printf("Lost IF4p5 connection with %s\n", inet_ntoa(eth->dest_addr.sin_addr)); + exit(-1); + } else if (errno == EWOULDBLOCK) { + block_cnt++; + usleep(10); + if (block_cnt == 1000) { + perror("ETHERNET IF4p5 READ (EWOULDBLOCK): "); + exit(-1); + } else { + printf("BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK \n"); + goto again; + } + } else { + perror("ETHERNET IF4p5 READ"); + printf("(%s):\n", strerror(errno)); + exit(-1); + } + } else { + *timestamp = test_header->sub_type; + eth->rx_actual_nsamps = bytes_received>>1; + eth->rx_count++; + } + } + //printf("size of third %d subtype %d frame %d subframe %d symbol %d \n", bytes_received, test_header->sub_type, ((test_header->frame_status)>>6)&0xffff, ((test_header->frame_status)>>22)&0x000f, ((test_header->frame_status)>>26)&0x000f) ; + + eth->rx_nsamps = nsamps; + return(bytes_received); +} + +int trx_eth_write_udp_IF4p5(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int cc, int flags) { + + int nblocks = nsamps; + int bytes_sent = 0; + + eth_state_t *eth = (eth_state_t*)device->priv; + + ssize_t packet_size; + + if (flags == IF4p5_PDLFFT) { + packet_size = UDP_IF4p5_PDLFFT_SIZE_BYTES(nblocks); + } else if (flags == IF4p5_PULFFT) { + packet_size = UDP_IF4p5_PULFFT_SIZE_BYTES(nblocks); + } else if (flags == IF4p5_PRACH) { + packet_size = UDP_IF4p5_PRACH_SIZE_BYTES; + } else { + printf("trx_eth_write_udp_IF4p5: unknown flags %d\n",flags); + return(-1); + } + + eth->tx_nsamps = nblocks; + + bytes_sent = sendto(eth->sockfd, + buff[0], + packet_size, + 0, + (struct sockaddr*)ð->dest_addr, + eth->addr_len); + + if (bytes_sent == -1) { + eth->num_tx_errors++; + perror("ETHERNET WRITE: "); + exit(-1); + } else { + eth->tx_actual_nsamps = bytes_sent>>1; + eth->tx_count++; + } + + return (bytes_sent); +} + +int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps,int cc, int flags) { + + int bytes_sent=0; + eth_state_t *eth = (eth_state_t*)device->priv; + int sendto_flag =0; + int i=0; + //sendto_flag|=flags; + eth->tx_nsamps=nsamps; + + for (i=0;ipck_header.seq_num = pck_seq_num; + //eth->pck_header.antenna_id = 1+(i<<1); + //eth->pck_header.timestamp = timestamp; + *(uint16_t *)buff2 = pck_seq_num; + *(uint16_t *)(buff2 + sizeof(uint16_t)) = 1+(i<<1); + *(openair0_timestamp *)(buff2 + sizeof(int32_t)) = timestamp; + VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TX_SEQ_NUM, pck_seq_num); + + while(bytes_sent < UDP_PACKET_SIZE_BYTES(nsamps)) { +#if DEBUG + printf("------- TX ------: buff2 current position=%d remaining_bytes=%d bytes_sent=%d \n", + (void *)(buff2+bytes_sent), + UDP_PACKET_SIZE_BYTES(nsamps) - bytes_sent, + bytes_sent); +#endif + /* Send packet */ + bytes_sent += sendto(eth->sockfd, + buff2, + UDP_PACKET_SIZE_BYTES(nsamps), + sendto_flag, + (struct sockaddr*)ð->dest_addr, + eth->addr_len); + + if ( bytes_sent == -1) { + eth->num_tx_errors++; + perror("ETHERNET WRITE: "); + exit(-1); + } else { +#if DEBUG + printf("------- TX ------: nu=%d an_id=%d ts%d bytes_send=%d\n", + *(int16_t *)buff2, + *(int16_t *)(buff2 + sizeof(int16_t)), + *(openair0_timestamp *)(buff2 + sizeof(int32_t)), + bytes_sent); + dump_packet((device->host_type == BBU_HOST)? "BBU":"RRH", buff2, UDP_PACKET_SIZE_BYTES(nsamps), TX_FLAG); +#endif + eth->tx_actual_nsamps=bytes_sent>>2; + eth->tx_count++; + pck_seq_num++; + if ( pck_seq_num > MAX_PACKET_SEQ_NUM(nsamps,device->openair0_cfg->samples_per_frame) ) pck_seq_num = 1; + } + } + /* tx buffer values restored */ + *(int32_t *)buff2 = temp0; + *(openair0_timestamp *)(buff2 + sizeof(int32_t)) = temp1; + } + + return (bytes_sent-APP_HEADER_SIZE_BYTES)>>2; +} + + + +int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, void **buff, int nsamps, int cc) { + + int bytes_received=0; + eth_state_t *eth = (eth_state_t*)device->priv; + // openair0_timestamp prev_timestamp = -1; + int rcvfrom_flag =0; + int block_cnt=0; + int again_cnt=0; + int i=0; + + eth->rx_nsamps=nsamps; + + for (i=0;isockfd, + buff2, + UDP_PACKET_SIZE_BYTES(nsamps), + rcvfrom_flag, + (struct sockaddr *)ð->dest_addr, + (socklen_t *)ð->addr_len); + + if (bytes_received ==-1) { + eth->num_rx_errors++; + if (errno == EAGAIN) { + again_cnt++; + usleep(10); + if (again_cnt == 1000) { + perror("ETHERNET READ: "); + exit(-1); + } else { + printf("AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN AGAIN \n"); + goto again; + } + } else if (errno == EWOULDBLOCK) { + block_cnt++; + usleep(10); + if (block_cnt == 1000) { + perror("ETHERNET READ: "); + exit(-1); + } else { + printf("BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK \n"); + goto again; + } + } + } else { +#if DEBUG + printf("------- RX------: nu=%d an_id=%d ts%d bytes_recv=%d\n", + *(int16_t *)buff2, + *(int16_t *)(buff2 + sizeof(int16_t)), + *(openair0_timestamp *)(buff2 + sizeof(int32_t)), + bytes_received); + dump_packet((device->host_type == BBU_HOST)? "BBU":"RRH", buff2, UDP_PACKET_SIZE_BYTES(nsamps),RX_FLAG); +#endif + + /* store the timestamp value from packet's header */ + *timestamp = *(openair0_timestamp *)(buff2 + sizeof(int32_t)); + /* store the sequence number of the previous packet received */ + if (pck_seq_num_cur == 0) { + pck_seq_num_prev = *(uint16_t *)buff2; + } else { + pck_seq_num_prev = pck_seq_num_cur; + } + /* get the packet sequence number from packet's header */ + pck_seq_num_cur = *(uint16_t *)buff2; + //printf("cur=%d prev=%d buff=%d\n",pck_seq_num_cur,pck_seq_num_prev,*(uint16_t *)(buff2)); + if ( ( pck_seq_num_cur != (pck_seq_num_prev + 1) ) && !((pck_seq_num_prev==MAX_PACKET_SEQ_NUM(nsamps,device->openair0_cfg->samples_per_frame)) && (pck_seq_num_cur==1 )) && !((pck_seq_num_prev==1) && (pck_seq_num_cur==1))) { + printf("out of order packet received1! %d|%d|%d\n",pck_seq_num_cur,pck_seq_num_prev,(int)*timestamp); + } + VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RX_SEQ_NUM,pck_seq_num_cur); + VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RX_SEQ_NUM_PRV,pck_seq_num_prev); + eth->rx_actual_nsamps=bytes_received>>2; + eth->rx_count++; + } + + } + /* tx buffer values restored */ + *(int32_t *)buff2 = temp0; + *(openair0_timestamp *)(buff2 + sizeof(int32_t)) = temp1; + + } + return (bytes_received-APP_HEADER_SIZE_BYTES)>>2; +} + + + + +int eth_set_dev_conf_udp(openair0_device *device) { + + eth_state_t *eth = (eth_state_t*)device->priv; + void *msg; + ssize_t msg_len; + + + /* a BBU client sents to RRH a set of configuration parameters (openair0_config_t) + so that RF front end is configured appropriately and + frame/packet size etc. can be set */ + + msg=malloc(sizeof(openair0_config_t)); + msg_len=sizeof(openair0_config_t); + memcpy(msg,(void*)device->openair0_cfg,msg_len); + + if (sendto(eth->sockfd,msg,msg_len,0,(struct sockaddr *)ð->dest_addr,eth->addr_len)==-1) { + perror("ETHERNET: sendto conf_udp"); + printf("addr_len : %d, msg_len %d\n",eth->addr_len,msg_len); + exit(0); + } + + return 0; +} + +int eth_get_dev_conf_udp(openair0_device *device) { + + eth_state_t *eth = (eth_state_t*)device->priv; + char str1[INET_ADDRSTRLEN],str[INET_ADDRSTRLEN]; + void *msg; + ssize_t msg_len; + + msg=malloc(sizeof(openair0_config_t)); + msg_len=sizeof(openair0_config_t); + + inet_ntop(AF_INET, &(eth->local_addr.sin_addr), str, INET_ADDRSTRLEN); + inet_ntop(AF_INET, &(eth->dest_addr.sin_addr), str1, INET_ADDRSTRLEN); + + /* RRH receives from BBU openair0_config_t */ + if (recvfrom(eth->sockfd, + msg, + msg_len, + 0, + (struct sockaddr *)ð->dest_addr, + (socklen_t *)ð->addr_len)==-1) { + perror("ETHERNET: recv_from conf_udp"); + exit(0); + } + device->openair0_cfg=(openair0_config_t *)msg; + + /* get remote ip address and port */ + /* inet_ntop(AF_INET, &(eth->dest_addr.sin_addr), str1, INET_ADDRSTRLEN); */ + /* device->openair0_cfg->remote_port =ntohs(eth->dest_addr.sin_port); */ + /* device->openair0_cfg->remote_addr =str1; */ + + /* /\* restore local ip address and port *\/ */ + /* inet_ntop(AF_INET, &(eth->local_addr.sin_addr), str, INET_ADDRSTRLEN); */ + /* device->openair0_cfg->my_port =ntohs(eth->local_addr.sin_port); */ + /* device->openair0_cfg->my_addr =str; */ + + /* printf("[RRH] mod_%d socket %d connected to BBU %s:%d %s:%d\n", Mod_id, eth->sockfd,str1, device->openair0_cfg->remote_port, str, device->openair0_cfg->my_port); */ + return 0; +}