netdev - [PATCH net-next 2/2] Revert "ice: Hide bus-info in ethtool for PRs in switchdev mode"

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Message-Id: <20220506180052.5256-3-anthony.l.nguyen@intel.com>
Date:   Fri,  6 May 2022 11:00:52 -0700
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com
Cc:     Marcin Szycik <marcin.szycik@...ux.intel.com>,
        netdev@...r.kernel.org, anthony.l.nguyen@...el.com,
        Sandeep Penigalapati <sandeep.penigalapati@...el.com>
Subject: [PATCH net-next 2/2] Revert "ice: Hide bus-info in ethtool for PRs in switchdev mode"

From: Marcin Szycik <marcin.szycik@...ux.intel.com>

This reverts commit bfaaba99e680bf82bf2cbf69866c3f37434ff766.

Commit bfaaba99e680 ("ice: Hide bus-info in ethtool for PRs in switchdev
mode") was a workaround for lshw tool displaying incorrect
descriptions for port representors and PF in switchdev mode. Now the issue
has been fixed in the lshw tool itself [1].

Removing the workaround can be considered a regression, as the user might
be running older, unpatched lshw version. However, another important change
(ice: link representors to PCI device, which improves port representor
netdev naming with SET_NETDEV_DEV) also causes the same "regression" as
removing the workaround, i.e. unpatched lshw is able to access bus-info
information (this time not via ethtool) and the bug can occur. Therefore,
the workaround no longer prevents the bug and can be removed.

[1] https://ezix.org/src/pkg/lshw/commit/9bf4e4c9c1

Signed-off-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_ethtool.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index 24cda7e1f916..476bd1c83c87 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -190,19 +190,17 @@ __ice_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo,
 	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 		 "%x.%02x 0x%x %d.%d.%d", nvm->major, nvm->minor,
 		 nvm->eetrack, orom->major, orom->build, orom->patch);
+
+	strscpy(drvinfo->bus_info, pci_name(pf->pdev),
+		sizeof(drvinfo->bus_info));
 }
 
 static void
 ice_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
 {
 	struct ice_netdev_priv *np = netdev_priv(netdev);
-	struct ice_pf *pf = np->vsi->back;
 
 	__ice_get_drvinfo(netdev, drvinfo, np->vsi);
-
-	strscpy(drvinfo->bus_info, pci_name(pf->pdev),
-		sizeof(drvinfo->bus_info));
-
 	drvinfo->n_priv_flags = ICE_PRIV_FLAG_ARRAY_SIZE;
 }
 
-- 
2.35.1