Re: Static content in /proc/net/dev.

[Timo Juhani Lindfors <timo.lindfors@iki.fi>]

Hi,

Mats Erik Andersson <mats.andersson@gisladisker.se> writes:
> as I learned in another message [1] the fact that
> "/proc/net/dev" lists wrong interface names (eth0 and
> similar) might be easily mended. However, much worse
> is the fact that "/proc/net/dev" seems never to be
> updated, thus rendering many networking tools useless

afaik /proc/net/dev is just a compatibility wrapper originally created
for running non-free linux binaries of Netscape on freebsd ;-)
</troll>

The current implementation is indeed very simple:

/*
 * Filler function for proc/net/dev
 */
static int
linprocfs_donetdev(PFS_FILL_ARGS)
{
        char ifname[16]; /* XXX LINUX_IFNAMSIZ */
        struct ifnet *ifp;

        sbuf_printf(sb, "%6s|%58s|%s\n%6s|%58s|%58s\n",
            "Inter-", "   Receive", "  Transmit", " face",
            "bytes    packets errs drop fifo frame compressed",
            "bytes    packets errs drop fifo frame compressed");

        CURVNET_SET(TD_TO_VNET(curthread));
        IFNET_RLOCK();
        TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
                linux_ifname(ifp, ifname, sizeof ifname);
                        sbuf_printf(sb, "%6.6s:", ifname);
                sbuf_printf(sb, "%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu ",
                    0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL);
                sbuf_printf(sb, "%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
                    0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL);
        }
        IFNET_RUNLOCK();
        CURVNET_RESTORE();

        return (0);
}


I think you need to discuss with upstream whether they want to extend
this compatibility wrapper or rather see us port the applications to
the native interface. Would

http://lists.freebsd.org/mailman/listinfo/freebsd-emulation

perhaps be the proper forum for this?

best regards,
Timo Lindfors