Thread (18 messages) flat view 18 messages, 7 authors, 2025-08-24

RE: [Intel-wired-lan] [PATCH net] i40e: Prevent unwanted interface name changes

From: Loktionov, Aleksandr <hidden>
Date: 2025-08-20 15:51:58
Also in: intel-wired-lan, lkml

quoted hunk ↗ jump to hunk
-----Original Message-----
From: Intel-wired-lan <redacted> On Behalf
Of Calvin Owens
Sent: Wednesday, August 20, 2025 6:29 AM
To: netdev@vger.kernel.org
Cc: Nguyen, Anthony L <anthony.l.nguyen@intel.com>; Kitszel,
Przemyslaw [off-list ref]; Andrew Lunn
[off-list ref]; David S. Miller [off-list ref]; Eric
Dumazet [off-list ref]; Jakub Kicinski [off-list ref]; Paolo
Abeni [off-list ref]; Jagielski, Jedrzej
[off-list ref]; Vecera, Ivan [off-list ref];
intel-wired-lan@lists.osuosl.org; linux-kernel@vger.kernel.org
Subject: [Intel-wired-lan] [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 <redacted>
---
 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;
1 is acceptable, but kernel style prefers true for boolean fields.
Can you use 'true' instead?
 	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-
quoted
hw.pf_id);
Thank you for the patch aligning i40e with ixgbe behavior to prevent unwanted interface renaming. This is correct and minimal.

You're adding attrs.no_phys_port_name = 1; but there's no comment in the function explaining why. While not strictly required, maintainers often expect a short inline comment like:
/* Prevent automatic phys_port_name generation (see ixgbe fix) */

This will help future readers understand why this flag is set, what do you think?
--
2.47.2
  
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help