On Thu, Nov 17, 2011 at 1:39 PM, Juli Mallett <[email protected]> wrote: > On Thu, Nov 17, 2011 at 13:12, Maksim Yevmenkin > <[email protected]> wrote: >> hello, >> >> i'm a little bit confused about if_baudrate. from system headers >> >> #define if_baudrate if_data.ifi_baudrate >> >> and >> >> u_long ifi_baudrate; /* linespeed */ >> >> so, i'm taking this as if_baudrate really should be an interface line >> speed in megabits per second. am i correct? if so, then it appears >> that at least some drivers lie about true line speed. for example from >> ixgbe(4) >> >> ifp->if_baudrate = 1000000000; >> >> it looks like its order of magnitude lower (i.e. 1 gigabit per second >> instead of 10 gigabits per second). am i missing something here or its >> just a typo? > > ixgbe's developer is excessively concerned about overflow on 32-bit > hosts (and unwilling to correct it under a preprocessor conditional), > unlike several of the other 10GbE driver developers, although I think > one 10GbE driver opts to omit if_baudrate entirely.
well, this is unfortunate as if_baudrate reported as part of ifmib, so, when interface is monitored over snmp value of ifSpeed and HCOutSpeed can not be trusted :( thanks, max _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[email protected]"
