pathload_rcv.h

pashload是应用在linux下的网络带宽测试源程序精确度比较高 ///////////////////////////////////// Pathload is a tool for es

/*
 This file is part of pathload.

 pathload 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 2 of the License, or
 (at your option) any later version.

 pathload 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 pathload; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/*-------------------------------------------------
   pathload : an end-to-end available bandwidth 
              estimation tool
   Author   : Manish Jain ( [e-mail] )
              Constantinos Dovrolis ([e-mail] )
   Release  : Ver 1.3.2
   Support  : This work was supported by the SciDAC
              program of the US department 
--------------------------------------------------*/

/*
 * $Header: /net/cvs/bwtest/pathload/pathload_rcv.h,v 1.72 2006/05/19 20:21:15 jain Exp $
 */

#ifdef LOCAL
#define EXTERN
#else
#define EXTERN extern
#endif

#define SCALE_FACTOR                2
#define NOTREND                     1
#define INCREASING                  2
#define GREY                        3

#define MEDIUM_LOSS_RATE            3
#define HIGH_LOSS_RATE              15
#define MIN_PARTITIONED_STREAM_LEN  5       /* number of packet */
#define MIN_STREAM_LEN              36      /* # of packets */
#define PCT_THRESHOLD               .55
#define PDT_THRESHOLD               .4
#define AGGREGATE_THRESHOLD         .6

#define NUM_RETRY_RATE_MISMATCH     0
#define NUM_RETRY_CS                1 
#define MAX_LOSSY_STREAM_FRACTION   50

#define MIN_TIME_INTERVAL           7         /* microsecond */
#define MAX_TIME_INTERVAL           200000    /* microsecond */

EXTERN l_int32 aggregate_trend_result() ;
EXTERN double time_to_us_delta(struct timeval tv1, struct timeval tv2);
EXTERN double get_avg(double data[], l_int32 no_values);
EXTERN double pairwise_comparision_test (double array[] , l_int32 start , l_int32 end);
EXTERN double pairwise_diff_test(double array[] ,l_int32 start , l_int32 end);
EXTERN l_int32 rate_adjustment(l_int32 flag);
EXTERN l_int32 eliminate_sndr_side_CS (double sndr_time_stamp[], l_int32 split_owd[] ) ;
EXTERN l_int32 eliminate_rcvr_side_CS ( double rcvr_time_stamp[] , double[], double[],l_int32,l_int32,l_int32 *,l_int32 * ) ;
EXTERN l_int32 eliminate_b2b_pkt_ic ( double rcvr_time_stamp[] , double[], double[],l_int32,l_int32,l_int32 *,l_int32 * ) ;
EXTERN void adjust_offset_to_zero(double owd[], l_int32 last_pkt_id);
EXTERN l_int32 recv_fleet() ;
EXTERN void print_contextswitch_info(l_int32 num_sndr_cs[], l_int32 num_rcvr_cs[],l_int32 discard[],l_int32 stream_cnt);
EXTERN void *ctrl_listen(void *) ;
EXTERN void radj_notrend() ;
EXTERN void radj_increasing() ;
EXTERN void radj_greymin() ;
EXTERN void radj_greymax() ;
EXTERN l_int32 calc_param();
EXTERN void get_sending_rate() ;
EXTERN double  get_adr() ;
EXTERN l_int32 recv_train(l_int32 , struct timeval *, l_int32 );
EXTERN l_int32 recvfrom_latency(struct sockaddr_in rcv_udp_addr);
EXTERN double grey_bw_resolution() ;
EXTERN void get_pct_trend(double[] , l_int32[], l_int32 ) ;
EXTERN void get_pdt_trend(double[] , l_int32[], l_int32 ) ;
EXTERN void get_trend(double owdfortd[],l_int32 pkt_cnt );
EXTERN l_int32 get_sndr_time_interval(double snd_time[],double *sum);
EXTERN void sig_alrm();
EXTERN void terminate_gracefully(struct timeval exp_start_time);
EXTERN l_int32 check_intr_coalescence(struct timeval time[],l_int32, l_int32 * );
EXTERN void order_float(float unord_arr[],float ord_arr[],l_int32 start, l_int32 num_elems);
EXTERN void order_dbl(double unord_arr[],double ord_arr[], l_int32 start,l_int32 no_elems) ;
EXTERN void order_int(l_int32 unord_arr[], l_int32 ord_arr[], l_int32 no_elems);
EXTERN l_int32 max(l_int32,l_int32 ) ;
EXTERN void send_ctr_mesg(char *ctr_buff, l_int32 ctr_code) ;
EXTERN l_int32 recv_ctr_mesg(l_int32 ctr_strm, char *ctr_buff) ;
EXTERN l_int32 equal(double a , double b);
EXTERN l_int32 less_than(double a , double b);
EXTERN l_int32 grtr_than(double a , double b);
EXTERN void netlogger();
EXTERN void print_time(FILE *fp, l_int32 time);
EXTERN void help();
EXTERN void sig_sigusr1() ;

EXTERN l_int32 exp_flag  ;
EXTERN l_int32 grey_flag  ;
EXTERN double tr ;
EXTERN double adr ;
EXTERN double tr_max ;
EXTERN double tr_min ;
EXTERN double grey_max  , grey_min  ;
EXTERN l_int32 sock_tcp, sock_udp;
EXTERN struct timeval first_time, second_time ;
EXTERN l_int32 exp_fleet_id  ;
EXTERN float bw_resol;
EXTERN l_uint32 min_time_interval, snd_latency, rcv_latency ;
EXTERN l_int32 repeat_fleet ;
EXTERN l_int32 counter ; /* # of consecutive times act-rate != req-rate */
EXTERN l_int32 converged_gmx_rmx ;
EXTERN l_int32 converged_gmn_rmn ;
EXTERN l_int32 converged_rmn_rmx ;
EXTERN l_int32 converged_gmx_rmx_tm ;
EXTERN l_int32 converged_gmn_rmn_tm ;
EXTERN l_int32 converged_rmn_rmx_tm ;
EXTERN double cur_actual_rate , cur_req_rate ;
EXTERN double prev_actual_rate , prev_req_rate ;
EXTERN double max_rate , min_rate ;
EXTERN l_int32 max_rate_flag , min_rate_flag ; 
EXTERN l_int32 bad_fleet_cs , bad_fleet_rate_mismatch ;
EXTERN l_int32 retry_fleet_cnt_cs , retry_fleet_cnt_rate_mismatch ;
EXTERN FILE *pathload_fp, *netlog_fp  ;
EXTERN double pct_metric[50], pdt_metric[50];
EXTERN l_int32 trend_idx ;
EXTERN double snd_time_interval ;
EXTERN l_int32 min_rsleep_time ; 
EXTERN l_int32 num ; 
EXTERN l_int32 slow;
EXTERN l_int32 interrupt_coalescence;
EXTERN l_int32 ic_flag ;
EXTERN l_int32 netlog ;
EXTERN char hostname[256];
EXTERN l_int32 repeat_1, repeat_2;
EXTERN l_int32 lower_bound;
EXTERN l_int32 increase_stream_len;
EXTERN l_int32 requested_delay ;
EXTERN struct timeval  exp_start_time ;

#ifdef THRLIB
typedef struct 
{
    pthread_t ptid ;
    l_int32 finished_stream ;
    l_int32 stream_cnt;
} thr_arg;
#endif