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Date: Thu, 23 Apr 1998 08:46:12 +0900
From: shuzo@cis.canon.co.jp
To: FreeBSD-users-jp@jp.freebsd.org
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Subject: [FreeBSD-users-jp 27500] Re: [Q] About transmit underflow
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$BCfB<!w%-%d%N%s$H?=$7$^$9!%(J

> $B%=!<%9$rFI$s$G3NG'$7$?$o$1$G$O$J$$$N$G$9$,!"(JFreeBSD 2.2.5-RELEASE +
> de-971020 $B$G(J
> 
> % dmesg | grep de0
> de0 <Digital 21140A Fast Ethernet> rev 32 int a irq 10 on pci0:17
> de0: DEC DE500-AA 21140A [10-100Mb/s] pass 2.0
> de0: address 00:00:f8:05:46:f9
> de0: enabling Full Duplex 100baseTX port
> de0: abnormal interrupt: transmit underflow (raising TX threshold to 96|256)
> de0: abnormal interrupt: transmit underflow (raising TX threshold to 8|512)
> de0: abnormal interrupt: transmit underflow (raising TX threshold to 1024)
> de0: abnormal interrupt: transmit underflow (switching to store-and-forward mode)
> % 
> 
> $B$H$$$&%a%C%;!<%8$,=P$F$$$k$N$G!"(Jstore-and-forward $B$K@Z$jBX$o$C$F$$$k$_$?(J
> $B$$$G$9!#(J

$B$J$k$[$I!$$"$^$j$K$b(Junderflow$B$,=P$k$H<+F0E*$K(Jstore-and-forward$B$K$^$G(J
$B@Z$jBX$o$k$h$&$K$J$C$F$?$o$1$G$9$M!%$&$s!$G<F@!%(J
$B!t(JTX threshould$B$r<+F0E*$K@Z$jBX$($k5!G=$r$D$1$F$k$s$@$C$?$i!$(J
$B!t$U$D!<$=$3$^$G$d$C$F$^$9$h$M!%(J

store-and-forward$B$K@Z$jBX$($,=*$o$l$P(Jtransmit underflow$B$O=P$J$$$h$&$K(J
$B$J$k$O$:$G$9$N$G!$$3$l$i$N(Jabnormal interrupt$B$N%a%C%;!<%8$O(J
$B!V%7%9%F%`$G(JPCI$B%P%9$,:.$s$G$$$k$h!W$/$i$$$N(Jwarning$B$H$G$b;W$C$F$*$1$P(J
$B$$$$$G$9$M!%(J

-----
shuzo
