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08-24-2017 07:50 AM
08-24-2017 07:50 AM
sys$qio IO$_WRITEVBLK with full-duplex card configuration
Hi,
Someone knows why the following function detecs correctly the cable disconnection for an ethernet card when is configured on half-duplex mode and when is configured on full-duplex mode doesn't detect the disconnection?
Really thanks in advance!
void check_hubs(int hub) { unsigned int stat,error_dev; float waittime = 0.1; /* needed time to obtain a qio answer */ P5_PARAM xmt_param={0xAB,0,0x04,0,0,0}; /* broadcast multicast address */ char xmt_buffer[1]; /* transmit buffer */ /* transmits a multicast message */ _qio_iosb[hub].w_err = 0; stat = sys$qio(0,_network_channel[hub].channel,IO$_WRITEVBLK,&_qio_iosb[hub],0,0,&xmt_buffer[0],0,0,0,&xmt_param,0); if (stat & 1) { /* qio success. wait a time to access to the returned information */ lib$wait(&waittime); /* checks qio status */ if (_qio_iosb[hub].w_err == 0) { /* timeout in write operation */ error_dev = TRUE; } else if ($FAIL(_qio_iosb[hub].w_err)) { /* network error */ error_dev = TRUE; } else { /* success in write operation */ error_dev = FALSE; } } else { /* qio error */ if (_network_channel[hub].critical) { lib$stop(stat,0,0); } else if (!_error_in_hub[hub]) { printf("QUIO ERROR CONTROL_DEVFAIL\n"); lib$signal(CONTROL_DEVFAIL, 1, &_dvc_dsc); } error_dev = TRUE; } }
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