diff mbox series

[net-next,v2,5/8] net: intel: i40e/igc: Remove setting Autoneg in EEE capabilities

Message ID 20240214-keee-u32-cleanup-v2-5-4ac534b83d66@lunn.ch (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series drivers: net: Convert EEE handling to use linkmode bitmaps | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 989 this patch: 989
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 1008 this patch: 1008
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1006 this patch: 1006
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 40 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-02-16--21-00 (tests: 1448)

Commit Message

Andrew Lunn Feb. 14, 2024, 11:13 p.m. UTC 
Energy Efficient Ethernet should always be negotiated with the link
peer. Don't include SUPPORTED_Autoneg in the results of get_eee() for
supported, advertised or lp_advertised, since it is
assumed. Additionally, ethtool(1) ignores the set bit, and no other
driver sets this.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 7 +------
 drivers/net/ethernet/intel/igc/igc_ethtool.c   | 4 ----
 2 files changed, 1 insertion(+), 10 deletions(-)

Comments

Jacob Keller Feb. 15, 2024, midnight UTC | #1 
On 2/14/2024 3:13 PM, Andrew Lunn wrote:
> Energy Efficient Ethernet should always be negotiated with the link
> peer. Don't include SUPPORTED_Autoneg in the results of get_eee() for
> supported, advertised or lp_advertised, since it is
> assumed. Additionally, ethtool(1) ignores the set bit, and no other
> driver sets this.
> 
> Signed-off-by: Andrew Lunn <andrew@lunn.ch>
> ---

I checked the git blame for both igc, and i40e both in-tree and in our
out-of-tree drivers which have this code. There is no explanation given
and it was just part of the original commits for implementing EEE
support for these two drivers.

I can't find any trace of a justification for this.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 1b5473358e1a..42e7e6cdaa6d 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -5664,16 +5664,12 @@  static int i40e_get_eee(struct net_device *netdev, struct ethtool_keee *edata)
 	if (phy_cfg.eee_capability == 0)
 		return -EOPNOTSUPP;
 
-	edata->supported_u32 = SUPPORTED_Autoneg;
-	edata->lp_advertised_u32 = edata->supported_u32;
-
 	/* Get current configuration */
 	status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_cfg, NULL);
 	if (status)
 		return -EAGAIN;
 
-	edata->advertised_u32 = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U;
-	edata->eee_enabled = !!edata->advertised_u32;
+	edata->eee_enabled = !!phy_cfg.eee_capability;
 	edata->tx_lpi_enabled = pf->stats.tx_lpi_status;
 
 	edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status;
@@ -5691,7 +5687,6 @@  static int i40e_is_eee_param_supported(struct net_device *netdev,
 		u32 value;
 		const char *name;
 	} param[] = {
-		{edata->advertised_u32 & ~SUPPORTED_Autoneg, "advertise"},
 		{edata->tx_lpi_timer, "tx-timer"},
 		{edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"}
 	};
diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c
index 47c797dd2cd9..ac92d10a3e97 100644
--- a/drivers/net/ethernet/intel/igc/igc_ethtool.c
+++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c
@@ -1634,7 +1634,6 @@  static int igc_ethtool_get_eee(struct net_device *netdev,
 			mmd_eee_adv_to_ethtool_adv_t(adapter->eee_advert);
 
 	*edata = adapter->eee;
-	edata->supported_u32 = SUPPORTED_Autoneg;
 
 	eeer = rd32(IGC_EEER);
 
@@ -1647,9 +1646,6 @@  static int igc_ethtool_get_eee(struct net_device *netdev,
 
 	edata->eee_enabled = hw->dev_spec._base.eee_enable;
 
-	edata->advertised_u32 = SUPPORTED_Autoneg;
-	edata->lp_advertised_u32 = SUPPORTED_Autoneg;
-
 	/* Report correct negotiated EEE status for devices that
 	 * wrongly report EEE at half-duplex
 	 */