From: "Robert P. J. Day" <rpjday@crashcourse.ca>
To: Linux kernel netdev mailing list <netdev@vger.kernel.org>
Subject: is "volatile" the cause of ifconfig flags not matching sysfs flags?
Date: Wed, 22 Aug 2018 18:32:36 -0400 (EDT) [thread overview]
Message-ID: <alpine.LFD.2.21.1808221824460.5035@localhost.localdomain> (raw)
almost certainly another dumb question, but i was poking around the
sysfs, particularly /sys/class/net/<ifname>/*, to familiarize myself
with what i can glean (or set) re interfaces under /sys, and i noticed
"flags", but what i get there doesn't match what i get by running
ifconfig.
specifically, if i list the flags for my wireless interface under
/sys:
$ cat flags
0x1003
$
but with ifconfig:
$ ifconfig wlp2s0
wlp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
^^^^
do those two "flags" values represent the same set of flags? and
does the obvious difference have to do with some of those flags being
"volatile" as dewscribed in include/uapi/linux/if.h? or am i just
totally misreading this?
rday
--
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Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca/dokuwiki
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next reply other threads:[~2018-08-23 2:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-22 22:32 Robert P. J. Day [this message]
2018-08-22 22:53 ` is "volatile" the cause of ifconfig flags not matching sysfs flags? Stephen Hemminger
2018-08-23 11:50 ` Robert P. J. Day
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