8 #include <sys/socket.h>
9 #include <netinet/in.h>
11 #include <arpa/inet.h>
12 #include <linux/can.h>
19 * [ ] consider can timestamp
24 #define printdbg(...) printf( __VA_ARGS__ )
29 #define BENCH_FLAG_N 1
30 #define BENCH_FLAG_SRC 2
31 #define BENCH_FLAG_DST 4
40 int can_sock_create( int ifindex );
41 int udp_sock_create( struct in_addr ip, unsigned int port );
48 struct cegw_if ceif[2]; /* 0 -> src, 1 -> dst */
52 pthread_barrier_t barrier;
53 struct timespec* tx_time, * rx_time;
55 void* thr_recv( void* arg )
62 if( d.ceif[1].type == IF_CAN )
63 sock = can_sock_create( d.ceif[1].can.ifindex );
65 sock = udp_sock_create( d.ceif[1].eth.ip, d.ceif[1].eth.port );
72 pthread_barrier_wait( &barrier );
75 for( i=0; i<d.n; i++ )
77 recvfrom( sock, &cf, sizeof(cf), 0, NULL, 0 );
78 seq = *((int*)cf.data);
79 clock_gettime( CLOCK_REALTIME, &rx_time[ seq ] );
80 printdbg( "recv: (id=%d)%d\n", cf.can_id, seq );
81 if( d.mode == BENCH_MODE_ONEATTIME )
83 pthread_barrier_wait( &barrier );
91 int timespec_subtract( struct timespec *result, struct timespec *x, struct timespec *yy )
93 struct timespec ylocal = *yy, *y = &ylocal;
94 /* Perform the carry for the later subtraction by updating Y. */
95 if( x->tv_nsec < y->tv_nsec )
97 int nsec = (y->tv_nsec - x->tv_nsec) / 1000000000 + 1;
98 y->tv_nsec -= 1000000000 * nsec;
101 if (x->tv_nsec - y->tv_nsec > 1000000000)
103 int nsec = (x->tv_nsec - y->tv_nsec) / 1000000000;
104 y->tv_nsec += 1000000000 * nsec;
108 /* Compute the time remaining to wait.
109 * `tv_nsec' is certainly positive. */
110 result->tv_sec = x->tv_sec - y->tv_sec;
111 result->tv_nsec = x->tv_nsec - y->tv_nsec;
112 /* Return 1 if result is negative. */
113 return x->tv_sec < y->tv_sec;
116 int udp_sock_create( struct in_addr ip, unsigned int port )
118 struct sockaddr_in addr_udp;
121 addr_udp.sin_family = AF_INET;
122 addr_udp.sin_port = htons( port );
123 addr_udp.sin_addr.s_addr = INADDR_ANY;
125 udp_sock = socket( PF_INET, SOCK_DGRAM, IPPROTO_UDP );
128 fprintf( stderr, "error: udp socket creation failed\n" );
132 if( bind(udp_sock, (struct sockaddr*)&addr_udp, sizeof(addr_udp)) != 0 )
134 fprintf( stderr, "error: udp socket binding failed\n" );
143 * @return can socket fd, or -1 on failure
145 int can_sock_create( int ifindex )
148 struct sockaddr_can addr_can;
150 addr_can.can_family = AF_CAN;
151 addr_can.can_ifindex = ifindex;
153 can_sock = socket( PF_CAN, SOCK_RAW, CAN_RAW );
156 fprintf( stderr, "error: can socket creation failed\n" );
160 if( bind(can_sock, (struct sockaddr*)&addr_can, sizeof(addr_can)) != 0 )
162 fprintf( stderr, "error: can socket binding failed\n" );
169 void dump_arg( int argc, char* argv[] )
174 for( i=0; i<argc; i++ )
176 printf( "%s ", argv[i] );
181 int read_mode( char* in )
183 if( strcmp( in, "asap" ) == 0 )
184 return BENCH_MODE_ASAP;
185 if( strcmp( in, "oneattime") == 0 )
186 return BENCH_MODE_ONEATTIME;
187 if( strcmp( in, "period" ) == 0 )
188 return BENCH_MODE_PERIOD;
190 return BENCH_MODE_UNDEF;
193 int main( int argc, char* argv[] )
205 d.mode = BENCH_MODE_ASAP;
207 struct option longopt[] =
209 { "mode", 0, NULL, 'm' },
215 opt = getopt( argc, argv, "s:d:m:n:" );
221 d.optflag |= BENCH_FLAG_SRC;
222 if( read_if( optarg, &d.ceif[0] ) != 0 )
229 d.optflag |= BENCH_FLAG_DST;
230 if( read_if( optarg, &d.ceif[1] ) )
237 tmp = read_mode( optarg );
238 if( tmp == BENCH_MODE_UNDEF )
240 perr( "benchmarking mode unknown" );
246 d.optflag |= BENCH_FLAG_N;
247 d.n = atoi( optarg );
256 /* '-n' option is mandatory and its value is >0 */
257 if( d.optflag & BENCH_FLAG_N )
261 perr( "'-n' should be at least 1." );
265 perr( "'-n' is mandatory." );
269 /* '-s' and '-d' should be defined and different iftype */
270 if( (d.optflag & BENCH_FLAG_SRC) && (d.optflag & BENCH_FLAG_DST) )
272 if( !(d.ceif[0].type == IF_CAN && d.ceif[1].type == IF_ETH_UDP) &&
273 !(d.ceif[0].type == IF_ETH_UDP && d.ceif[1].type == IF_CAN ) )
275 perr( "'-s' and '-d' should be different interface type." );
280 perr( "'-s' and '-d' should be defined." );
284 tx_time = malloc( d.n*sizeof(struct timespec) );
285 rx_time = malloc( d.n*sizeof(struct timespec) );
287 pthread_barrier_init( &barrier, NULL, 2 );
288 pthread_create( &thr, NULL, thr_recv, NULL );
291 struct sockaddr* addr;
292 struct sockaddr_can addr_can;
293 struct sockaddr_in addr_udp;
296 if( d.ceif[0].type == IF_CAN )
298 sock = socket( PF_CAN, SOCK_RAW, CAN_RAW );
299 addr_can.can_family = AF_CAN;
300 addr_can.can_ifindex = d.ceif[0].can.ifindex;
301 addr = (struct sockaddr*)&addr_can;
302 addr_size = sizeof( addr_can );
306 sock = socket( PF_INET, SOCK_DGRAM, IPPROTO_UDP );
307 addr_udp.sin_family = AF_INET;
308 addr_udp.sin_addr = d.ceif[0].eth.ip;
309 addr_udp.sin_port = htons( d.ceif[0].eth.port );
310 addr = (struct sockaddr*)&addr_udp;
311 addr_size = sizeof( addr_udp );
313 if( sock < 0 ) /* ToDo: ? */
316 pthread_barrier_wait( &barrier );
319 for( i=0; i<d.n; i++ )
323 memcpy( cf.data, &i, sizeof(i) );
325 clock_gettime( CLOCK_REALTIME, &tx_time[cf.data[0]] );
326 ret = sendto( sock, &cf, sizeof(cf), 0, addr, addr_size ); /* ToDo: check ret */
327 printdbg( "sending(%d)\n", ret );
328 if( d.mode == BENCH_MODE_ONEATTIME )
330 pthread_barrier_wait( &barrier );
334 close( sock ); /* ToDo: shutdown? */
335 pthread_join( thr, NULL );
338 dump_arg( argc, argv );
339 for( i=0; i<d.n; i++ )
341 timespec_subtract( &res, &rx_time[i], &tx_time[i] );
343 time = res.tv_sec*1000000000.0f + (float)res.tv_nsec;
344 printf( "%f\t", time );
348 pthread_barrier_destroy( &barrier );