28 Jun 2008 18:20
Re: Implementation of overflow correction of SysUptime counter in netflow_v*.c
Hi Daan Many thanks for your input. I'm currently out of the office, and will check this, when I'm back. Many thanks - Peter Daan van der Sanden wrote: | Hi, | | In both netflow_v5_v7.c and netflow_v9.c is an error in handling an overflow | of the SysUptime counter. However I can't test this it at the moment, because | I don't have any packet in which there is an overflow of SysUptime, but going | through the c-code I think it is wrong (unless I'm missing something | obvious). | | This is the part where the header gets read: | v5_header->SysUptime = ntohl(v5_header->SysUptime); | v5_header->unix_secs = ntohl(v5_header->unix_secs); | v5_header->unix_nsecs = ntohl(v5_header->unix_nsecs); | | /* calculate boot time in msec */ | boot_time = ((uint64_t)(v5_header->unix_secs)*1000 + | ((uint64_t(v5_header->unix_nsecs) / 1000000) ) - | (uint64_t)(v5_header->SysUptime); | | And here where the overflow correction takes place, when a flow record is(Continue reading)
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