8 #include <sys/socket.h>
9 #include <netinet/in.h>
11 #include <arpa/inet.h>
12 #include <linux/can.h>
19 #define printdbg(...) printf( __VA_ARGS__ )
24 #define BENCH_FLAG_N 1
25 #define BENCH_FLAG_SRC 2
26 #define BENCH_FLAG_DST 4
27 #define BENCH_FLAG_TIMEO 8
36 int can_sock_create( int ifindex );
37 int udp_sock_create( struct in_addr ip, unsigned int port );
45 struct cegw_if ceif[2]; /* 0 -> src, 1 -> dst */
49 pthread_barrier_t barrier;
50 struct timespec* tx_time, * rx_time;
52 void* thr_recv( void* arg )
60 if( d.ceif[1].type == IF_CAN )
61 sock = can_sock_create( d.ceif[1].can.ifindex );
63 sock = udp_sock_create( d.ceif[1].eth.ip, d.ceif[1].eth.port );
70 ret = setsockopt( sock, SOL_SOCKET, SO_RCVTIMEO, &d.timeo, sizeof(d.timeo) );
74 pthread_barrier_wait( &barrier );
77 for( i=0; i<d.n; i++ )
79 ret = recvfrom( sock, &cf, sizeof(cf), 0, NULL, 0 );
83 puts( "cegwbench: recv timed out\n" );
86 seq = *((int*)cf.data);
87 clock_gettime( CLOCK_REALTIME, &rx_time[ seq ] );
88 printdbg( "recv: (id=%d)%d\n", cf.can_id, seq );
89 if( d.mode == BENCH_MODE_ONEATTIME )
91 pthread_barrier_wait( &barrier );
99 int timespec_subtract( struct timespec *result, struct timespec *x, struct timespec *yy )
101 struct timespec ylocal = *yy, *y = &ylocal;
102 /* Perform the carry for the later subtraction by updating Y. */
103 if( x->tv_nsec < y->tv_nsec )
105 int nsec = (y->tv_nsec - x->tv_nsec) / 1000000000 + 1;
106 y->tv_nsec -= 1000000000 * nsec;
109 if (x->tv_nsec - y->tv_nsec > 1000000000)
111 int nsec = (x->tv_nsec - y->tv_nsec) / 1000000000;
112 y->tv_nsec += 1000000000 * nsec;
116 /* Compute the time remaining to wait.
117 * `tv_nsec' is certainly positive. */
118 result->tv_sec = x->tv_sec - y->tv_sec;
119 result->tv_nsec = x->tv_nsec - y->tv_nsec;
120 /* Return 1 if result is negative. */
121 return x->tv_sec < y->tv_sec;
124 int udp_sock_create( struct in_addr ip, unsigned int port )
126 struct sockaddr_in addr_udp;
129 addr_udp.sin_family = AF_INET;
130 addr_udp.sin_port = htons( port );
131 addr_udp.sin_addr.s_addr = INADDR_ANY;
133 udp_sock = socket( PF_INET, SOCK_DGRAM, IPPROTO_UDP );
136 fprintf( stderr, "error: udp socket creation failed\n" );
140 if( bind(udp_sock, (struct sockaddr*)&addr_udp, sizeof(addr_udp)) != 0 )
142 fprintf( stderr, "error: udp socket binding failed\n" );
151 * @return can socket fd, or -1 on failure
153 int can_sock_create( int ifindex )
156 struct sockaddr_can addr_can;
158 addr_can.can_family = AF_CAN;
159 addr_can.can_ifindex = ifindex;
161 can_sock = socket( PF_CAN, SOCK_RAW, CAN_RAW );
164 fprintf( stderr, "error: can socket creation failed\n" );
168 if( bind(can_sock, (struct sockaddr*)&addr_can, sizeof(addr_can)) != 0 )
170 fprintf( stderr, "error: can socket binding failed\n" );
177 void dump_arg( int argc, char* argv[] )
182 for( i=0; i<argc; i++ )
184 printf( "%s ", argv[i] );
189 int read_mode( char* in )
191 if( strcmp( in, "asap" ) == 0 )
192 return BENCH_MODE_ASAP;
193 if( strcmp( in, "oneattime") == 0 )
194 return BENCH_MODE_ONEATTIME;
195 if( strcmp( in, "period" ) == 0 )
196 return BENCH_MODE_PERIOD;
198 return BENCH_MODE_UNDEF;
201 int main( int argc, char* argv[] )
214 d.mode = BENCH_MODE_ASAP;
218 struct option longopt[] =
220 { "mode", 0, NULL, 'm' },
226 opt = getopt( argc, argv, "s:d:m:n:t:" );
232 d.optflag |= BENCH_FLAG_SRC;
233 if( read_if( optarg, &d.ceif[0] ) != 0 )
240 d.optflag |= BENCH_FLAG_DST;
241 if( read_if( optarg, &d.ceif[1] ) )
248 tmp = read_mode( optarg );
249 if( tmp == BENCH_MODE_UNDEF )
251 perr( "benchmarking mode unknown" );
257 d.optflag |= BENCH_FLAG_N;
258 d.n = atoi( optarg );
261 d.optflag |= BENCH_FLAG_TIMEO;
262 if( sscanf( optarg, "%ld", &d.timeo.tv_sec ) != 1 )
264 perr( "timeout mismatch" );
276 /* '-n' option is mandatory and its value is >0 */
277 if( d.optflag & BENCH_FLAG_N )
281 perr( "'-n' should be at least 1." );
285 perr( "'-n' is mandatory." );
289 /* '-s' and '-d' should be defined and different iftype */
290 if( (d.optflag & BENCH_FLAG_SRC) && (d.optflag & BENCH_FLAG_DST) )
292 if( !(d.ceif[0].type == IF_CAN && d.ceif[1].type == IF_ETH_UDP) &&
293 !(d.ceif[0].type == IF_ETH_UDP && d.ceif[1].type == IF_CAN ) )
295 perr( "'-s' and '-d' should be different interface type." );
300 perr( "'-s' and '-d' should be defined." );
304 tx_time = malloc( d.n*sizeof(struct timespec) );
305 rx_time = malloc( d.n*sizeof(struct timespec) );
307 pthread_barrier_init( &barrier, NULL, 2 );
308 pthread_create( &thr, NULL, thr_recv, &d );
311 struct sockaddr* addr;
312 struct sockaddr_can addr_can;
313 struct sockaddr_in addr_udp;
316 if( d.ceif[0].type == IF_CAN )
318 sock = socket( PF_CAN, SOCK_RAW, CAN_RAW );
319 addr_can.can_family = AF_CAN;
320 addr_can.can_ifindex = d.ceif[0].can.ifindex;
321 addr = (struct sockaddr*)&addr_can;
322 addr_size = sizeof( addr_can );
326 sock = socket( PF_INET, SOCK_DGRAM, IPPROTO_UDP );
327 addr_udp.sin_family = AF_INET;
328 addr_udp.sin_addr = d.ceif[0].eth.ip;
329 addr_udp.sin_port = htons( d.ceif[0].eth.port );
330 addr = (struct sockaddr*)&addr_udp;
331 addr_size = sizeof( addr_udp );
333 if( sock < 0 ) /* ToDo: ? */
336 pthread_barrier_wait( &barrier );
339 for( i=0; i<d.n; i++ )
343 memcpy( cf.data, &i, sizeof(i) );
345 clock_gettime( CLOCK_REALTIME, &tx_time[cf.data[0]] );
346 ret = sendto( sock, &cf, sizeof(cf), 0, addr, addr_size ); /* ToDo: check ret */
347 printdbg( "sending(%d)\n", ret );
348 if( d.mode == BENCH_MODE_ONEATTIME )
350 pthread_barrier_wait( &barrier );
354 close( sock ); /* ToDo: shutdown? */
355 pthread_join( thr, &thr_ret );
357 if( thr_ret != NULL )
363 dump_arg( argc, argv );
364 for( i=0; i<d.n; i++ )
366 timespec_subtract( &res, &rx_time[i], &tx_time[i] );
368 time = res.tv_sec*1000000000.0f + (float)res.tv_nsec;
369 printf( "%f\t", time );
373 pthread_barrier_destroy( &barrier );