linux-kernel - [PATCH] sfc: Fix reading non-legacy supported link modes

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Message-Id: <20211017171657.85724-1-erik@kryo.se>
Date:   Sun, 17 Oct 2021 19:16:57 +0200
From:   Erik Ekman <erik@...o.se>
To:     Edward Cree <ecree.xilinx@...il.com>,
        Martin Habets <habetsm.xilinx@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Erik Ekman <erik@...o.se>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] sfc: Fix reading non-legacy supported link modes

Everything except the first 32 bits was lost when the pause flags were
added. This makes the 50000baseCR2 mode flag (bit 34) not appear.

I have tested this with a 10G card (SFN5122F-R7) by modifying it to
return a non-legacy link mode (10000baseCR).

Signed-off-by: Erik Ekman <erik@...o.se>
---
 drivers/net/ethernet/sfc/ethtool_common.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/sfc/ethtool_common.c b/drivers/net/ethernet/sfc/ethtool_common.c
index bf1443539a1a..bd552c7dffcb 100644
--- a/drivers/net/ethernet/sfc/ethtool_common.c
+++ b/drivers/net/ethernet/sfc/ethtool_common.c
@@ -563,20 +563,14 @@ int efx_ethtool_get_link_ksettings(struct net_device *net_dev,
 {
 	struct efx_nic *efx = netdev_priv(net_dev);
 	struct efx_link_state *link_state = &efx->link_state;
-	u32 supported;
 
 	mutex_lock(&efx->mac_lock);
 	efx_mcdi_phy_get_link_ksettings(efx, cmd);
 	mutex_unlock(&efx->mac_lock);
 
 	/* Both MACs support pause frames (bidirectional and respond-only) */
-	ethtool_convert_link_mode_to_legacy_u32(&supported,
-						cmd->link_modes.supported);
-
-	supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
-
-	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
-						supported);
+	ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
+	ethtool_link_ksettings_add_link_mode(cmd, supported, Asym_Pause);
 
 	if (LOOPBACK_INTERNAL(efx)) {
 		cmd->base.speed = link_state->speed;
-- 
2.31.1