linux-kernel - [PATCH net] i40e: Prevent unwanted interface name changes

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Message-ID: <94d7d5c0bb4fc171154ccff36e85261a9f186923.1755661118.git.calvin@wbinvd.org>
Date: Tue, 19 Aug 2025 21:29:01 -0700
From: Calvin Owens <calvin@...nvd.org>
To: netdev@...r.kernel.org
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Jedrzej Jagielski <jedrzej.jagielski@...el.com>,
	Ivan Vecera <ivecera@...hat.com>,
	intel-wired-lan@...ts.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net] i40e: Prevent unwanted interface name changes

The same naming regression which was reported in ixgbe and fixed in
commit e67a0bc3ed4f ("ixgbe: prevent from unwanted interface name
changes") still exists in i40e.

Fix i40e by setting the same flag, added in commit c5ec7f49b480
("devlink: let driver opt out of automatic phys_port_name generation").

Fixes: 9e479d64dc58 ("i40e: Add initial devlink support")
Signed-off-by: Calvin Owens <calvin@...nvd.org>
---
 drivers/net/ethernet/intel/i40e/i40e_devlink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_devlink.c b/drivers/net/ethernet/intel/i40e/i40e_devlink.c
index cc4e9e2addb7..40f81e798151 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_devlink.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_devlink.c
@@ -212,6 +212,7 @@ int i40e_devlink_create_port(struct i40e_pf *pf)
 
 	attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
 	attrs.phys.port_number = pf->hw.pf_id;
+	attrs.no_phys_port_name = 1;
 	i40e_devlink_set_switch_id(pf, &attrs.switch_id);
 	devlink_port_attrs_set(&pf->devlink_port, &attrs);
 	err = devlink_port_register(devlink, &pf->devlink_port, pf->hw.pf_id);
-- 
2.47.2