This is a note to let you know that I've just added the patch titled
usb: gadget: u_ether: Re-attach netif device to mirror detachment
to the 6.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-gadget-u_ether-re-attach-netif-device-to-mirror-detachment.patch
and it can be found in the queue-6.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 76c945730cdffb572c7767073cc6515fd3f646b4 Mon Sep 17 00:00:00 2001
From: Richard Acayan <mailingradian@xxxxxxxxx>
Date: Mon, 18 Dec 2023 11:45:33 -0500
Subject: usb: gadget: u_ether: Re-attach netif device to mirror detachment
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Richard Acayan <mailingradian@xxxxxxxxx>
commit 76c945730cdffb572c7767073cc6515fd3f646b4 upstream.
In 6.7-rc1, there was a netif_device_detach call added to the
gether_disconnect function. This clears the __LINK_STATE_PRESENT bit of
the netif device and suppresses pings (ICMP messages) and TCP connection
requests from the connected host. If userspace temporarily disconnects
the gadget, such as by temporarily removing configuration in the gadget
configfs interface, network activity should continue to be processed
when the gadget is re-connected. Mirror the netif_device_detach call
with a netif_device_attach call in gether_connect to fix re-connecting
gadgets.
Link: https://gitlab.com/postmarketOS/pmaports/-/tree/6002e51b7090aeeb42947e0ca7ec22278d7227d0/main/postmarketos-base-ui/rootfs-usr-lib-NetworkManager-dispatcher.d-50-tethering.sh
Cc: stable <stable@xxxxxxxxxx>
Fixes: f49449fbc21e ("usb: gadget: u_ether: Replace netif_stop_queue with netif_device_detach")
Signed-off-by: Richard Acayan <mailingradian@xxxxxxxxx>
Tested-by: Luca Weiss <luca@xxxxxxxxx>
Tested-by: Duje Mihanović <duje.mihanovic@xxxxxxxx>
Link: https://lore.kernel.org/r/20231218164532.411125-2-mailingradian@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/gadget/function/u_ether.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index 9d1c40c152d8..3c5a6f6ac341 100644
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@@ -1163,6 +1163,8 @@ struct net_device *gether_connect(struct gether *link)
if (netif_running(dev->net))
eth_start(dev, GFP_ATOMIC);
+ netif_device_attach(dev->net);
+
/* on error, disable any endpoints */
} else {
(void) usb_ep_disable(link->out_ep);
--
2.43.0
Patches currently in stable-queue which might be from mailingradian@xxxxxxxxx are
queue-6.7/usb-gadget-u_ether-re-attach-netif-device-to-mirror-detachment.patch
