This is a note to let you know that I've just added the patch titled
idpf: distinguish vports by the dev_port attribute
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:
idpf-distinguish-vports-by-the-dev_port-attribute.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.
commit 5d5966086cb8bd78aab1a1b25b336edea51fe324
Author: Michal Schmidt <mschmidt@xxxxxxxxxx>
Date: Thu Jan 18 21:50:40 2024 +0100
idpf: distinguish vports by the dev_port attribute
[ Upstream commit 359724fa3ab79fbe9f42c6263cddc2afae32eef3 ]
idpf registers multiple netdevs (virtual ports) for one PCI function,
but it does not provide a way for userspace to distinguish them with
sysfs attributes. Per Documentation/ABI/testing/sysfs-class-net, it is
a bug not to set dev_port for independent ports on the same PCI bus,
device and function.
Without dev_port set, systemd-udevd's default naming policy attempts
to assign the same name ("ens2f0") to all four idpf netdevs on my test
system and obviously fails, leaving three of them with the initial
eth<N> name.
With this patch, systemd-udevd is able to assign unique names to the
netdevs (e.g. "ens2f0", "ens2f0d1", "ens2f0d2", "ens2f0d3").
The Intel-provided out-of-tree idpf driver already sets dev_port. In
this patch I chose to do it in the same place in the idpf_cfg_netdev
function.
Fixes: 0fe45467a104 ("idpf: add create vport and netdev configuration")
Signed-off-by: Michal Schmidt <mschmidt@xxxxxxxxxx>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/intel/idpf/idpf_lib.c b/drivers/net/ethernet/intel/idpf/idpf_lib.c
index 19809b0ddcd9..0241e498cc20 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_lib.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_lib.c
@@ -783,6 +783,8 @@ static int idpf_cfg_netdev(struct idpf_vport *vport)
/* setup watchdog timeout value to be 5 second */
netdev->watchdog_timeo = 5 * HZ;
+ netdev->dev_port = idx;
+
/* configure default MTU size */
netdev->min_mtu = ETH_MIN_MTU;
netdev->max_mtu = vport->max_mtu;
