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net_util: Don't expect the interface to be IFF_RUNNING

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Enabling the TAP interface is only about the IFF_UP flag, meaning we
shouldn't be testing the presence of IFF_RUNNING, and therefore we
shouldn't set it when not present.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2022-07-05 13:43:44 +02:00 committed by Rob Bradford
parent 9c0872def7
commit 63579341e1
1 changed files with 3 additions and 5 deletions
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8
net_util/src/tap.rs
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@ -321,15 +321,13 @@ impl Tap {
// If TAP device is already up don't try and enable it
let ifru_flags = unsafe { ifreq.ifr_ifru.ifru_flags };
if ifru_flags
& (net_gen::net_device_flags_IFF_UP | net_gen::net_device_flags_IFF_RUNNING) as i16
== (net_gen::net_device_flags_IFF_UP | net_gen::net_device_flags_IFF_RUNNING) as i16
if ifru_flags & net_gen::net_device_flags_IFF_UP as i16
== net_gen::net_device_flags_IFF_UP as i16
{
return Ok(());
}
ifreq.ifr_ifru.ifru_flags =
(net_gen::net_device_flags_IFF_UP | net_gen::net_device_flags_IFF_RUNNING) as i16;
ifreq.ifr_ifru.ifru_flags = net_gen::net_device_flags_IFF_UP as i16;
// ioctl is safe. Called with a valid sock fd, and we check the return.
let ret =