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From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
To: Umang Pokhriyal <umangpokhriyall@gmail.com>,
	 Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
	 Jason Wang <jasowangio@gmail.com>,
	 Andrew Lunn <andrew+netdev@lunn.ch>,
	 "David S. Miller" <davem@davemloft.net>,
	 Eric Dumazet <edumazet@kernel.org>,
	 Jakub Kicinski <kuba@kernel.org>,
	 Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org,  linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next] tap: report IFF_DETACH_QUEUE in TUNGETIFF
Date: Wed, 30 Sep 2026 11:02:13 -0400	[thread overview]
Message-ID: <willemdebruijn.kernel.2082eadbd651@gmail.com> (raw)
In-Reply-To: <20260929142238.41742-1-umangpokhriyall@gmail.com>

Umang Pokhriyal wrote:
> tun sets IFF_DETACH_QUEUE in the flags returned by TUNGETIFF when the
> queue is detached, since commit 3d407a80b62f ("tun: Report whether the
> queue is attached or not"). tap_ioctl() returns only q->flags, so a
> detached macvtap or ipvtap queue is reported as attached.
> 
> Cloud Hypervisor ran into this when checking queue state on macvtap.
> 
> Report the flag from q->enabled, as tun does.
> 
> Assisted-by: LLM
> Signed-off-by: Umang Pokhriyal <umangpokhriyall@gmail.com>

Reviewed-by: Willem de Bruijn <willemb@google.com>

  reply	other threads:[~2026-09-30 15:02 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-29 14:22 [PATCH net-next] tap: report IFF_DETACH_QUEUE in TUNGETIFF Umang Pokhriyal
2026-09-30 15:02 ` Willem de Bruijn [this message]
2026-10-01 17:23 ` netdev-bot+sashiko
2026-10-04 17:32   ` Umang Pokhriyal

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