diff options
| -rw-r--r-- | dahdi_scan.c | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/dahdi_scan.c b/dahdi_scan.c index 582f44d..1a30d18 100644 --- a/dahdi_scan.c +++ b/dahdi_scan.c @@ -95,11 +95,13 @@ int main(int argc, char *argv[]) strcat(alarms, "YEL/"); if (s.alarms & DAHDI_ALARM_RED) { strcat(alarms, "RED/"); + +/* Extended alarm feature test. Allows compilation with + * versions of dahdi-linux prior to 2.4 + */ #ifdef DAHDI_ALARM_LFA if (s.alarms & DAHDI_ALARM_LFA) strcat(alarms, "LFA/"); - if (s.alarms & DAHDI_ALARM_LMFA) - strcat(alarms, "LMFA/"); #endif /* ifdef DAHDI_ALARM_LFA */ } if (s.alarms & DAHDI_ALARM_LOOPBACK) @@ -115,10 +117,35 @@ int main(int argc, char *argv[]) alarms[strlen(alarms)-1]='\0'; } } else { - if (s.numchans) - strcpy(alarms, "OK"); - else + if (s.numchans) { +#ifdef DAHDI_ALARM_LFA + /* If we continuously receive framing errors + * but our span is still in service, and we + * are configured for E1 & crc4. We've lost + * crc4-multiframe alignment + */ + if ((s.linecompat & DAHDI_CONFIG_CRC4) && + (s.fecount > 0)) { + struct dahdi_spaninfo t; + memset(&t, 0, sizeof(t)); + t.spanno = x; + sleep(1); + if (ioctl(ctl, DAHDI_SPANSTAT, &t)) + continue; + + /* Test fecount at two separate time + * intervals, if they differ, throw LMFA + */ + if ((t.fecount > s.fecount) && + !t.alarms) { + strcat(alarms, "LMFA/"); + } + } +#endif /* ifdef DAHDI_ALARM_LFA */ + strcat(alarms, "OK"); + } else { strcpy(alarms, "UNCONFIGURED"); + } } fprintf(stdout, "[%d]\n", x); |