linux-kernel - [PATCH net-next 04/13] qed: use transceiver data to fill link partner's advertising speeds

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Date:   Thu, 16 Jul 2020 14:54:37 +0300
From:   Alexander Lobakin <alobakin@...vell.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     Alexander Lobakin <alobakin@...vell.com>,
        Igor Russkikh <irusskikh@...vell.com>,
        Michal Kalderon <michal.kalderon@...vell.com>,
        "Ariel Elior" <aelior@...vell.com>,
        Denis Bolotin <denis.bolotin@...vell.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        <GR-everest-linux-l2@...vell.com>,
        <QLogic-Storage-Upstream@...ium.com>, <netdev@...r.kernel.org>,
        <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next 04/13] qed: use transceiver data to fill link partner's advertising speeds

Currently qed driver does not take into consideration transceiver's
capabilities when generating link partner's speed advertisement. This
leads to e.g. incorrect ethtool link info on 10GbaseT modules.
Use transceiver info not only for advertisement and support arrays, but
also for link partner's abilities to fix it.

Misc: fix a couple of comments nearby.

Signed-off-by: Alexander Lobakin <alobakin@...vell.com>
Signed-off-by: Igor Russkikh <irusskikh@...vell.com>
---
 drivers/net/ethernet/qlogic/qed/qed_main.c | 49 +++++++++++++---------
 1 file changed, 29 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index 9df27c3f5cab..1639210044a7 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -1870,6 +1870,27 @@ static void qed_fill_link_capability(struct qed_hwfn *hwfn,
 	}
 }
 
+static void qed_lp_caps_to_speed_mask(u32 caps, u32 *speed_mask)
+{
+	*speed_mask = 0;
+
+	if (caps &
+	    (QED_LINK_PARTNER_SPEED_1G_FD | QED_LINK_PARTNER_SPEED_1G_HD))
+		*speed_mask |= NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_1G;
+	if (caps & QED_LINK_PARTNER_SPEED_10G)
+		*speed_mask |= NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_10G;
+	if (caps & QED_LINK_PARTNER_SPEED_20G)
+		*speed_mask |= NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_20G;
+	if (caps & QED_LINK_PARTNER_SPEED_25G)
+		*speed_mask |= NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_25G;
+	if (caps & QED_LINK_PARTNER_SPEED_40G)
+		*speed_mask |= NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_40G;
+	if (caps & QED_LINK_PARTNER_SPEED_50G)
+		*speed_mask |= NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_50G;
+	if (caps & QED_LINK_PARTNER_SPEED_100G)
+		*speed_mask |= NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_BB_100G;
+}
+
 static void qed_fill_link(struct qed_hwfn *hwfn,
 			  struct qed_ptt *ptt,
 			  struct qed_link_output *if_link)
@@ -1877,7 +1898,7 @@ static void qed_fill_link(struct qed_hwfn *hwfn,
 	struct qed_mcp_link_capabilities link_caps;
 	struct qed_mcp_link_params params;
 	struct qed_mcp_link_state link;
-	u32 media_type;
+	u32 media_type, speed_mask;
 
 	memset(if_link, 0, sizeof(*if_link));
 
@@ -1908,13 +1929,18 @@ static void qed_fill_link(struct qed_hwfn *hwfn,
 	else
 		__clear_bit(QED_LM_Autoneg, if_link->advertised_caps);
 
-	/* Fill link advertised capability*/
+	/* Fill link advertised capability */
 	qed_fill_link_capability(hwfn, ptt, params.speed.advertised_speeds,
 				 if_link->advertised_caps);
-	/* Fill link supported capability*/
+
+	/* Fill link supported capability */
 	qed_fill_link_capability(hwfn, ptt, link_caps.speed_capabilities,
 				 if_link->supported_caps);
 
+	/* Fill partner advertised capability */
+	qed_lp_caps_to_speed_mask(link.partner_adv_speed, &speed_mask);
+	qed_fill_link_capability(hwfn, ptt, speed_mask, if_link->lp_caps);
+
 	if (link.link_up)
 		if_link->speed = link.speed;
 
@@ -1932,23 +1958,6 @@ static void qed_fill_link(struct qed_hwfn *hwfn,
 	if (params.pause.forced_tx)
 		if_link->pause_config |= QED_LINK_PAUSE_TX_ENABLE;
 
-	/* Link partner capabilities */
-
-	if (link.partner_adv_speed & QED_LINK_PARTNER_SPEED_1G_FD)
-		__set_bit(QED_LM_1000baseT_Full, if_link->lp_caps);
-	if (link.partner_adv_speed & QED_LINK_PARTNER_SPEED_10G)
-		__set_bit(QED_LM_10000baseKR_Full, if_link->lp_caps);
-	if (link.partner_adv_speed & QED_LINK_PARTNER_SPEED_20G)
-		__set_bit(QED_LM_20000baseKR2_Full, if_link->lp_caps);
-	if (link.partner_adv_speed & QED_LINK_PARTNER_SPEED_25G)
-		__set_bit(QED_LM_25000baseKR_Full, if_link->lp_caps);
-	if (link.partner_adv_speed & QED_LINK_PARTNER_SPEED_40G)
-		__set_bit(QED_LM_40000baseLR4_Full, if_link->lp_caps);
-	if (link.partner_adv_speed & QED_LINK_PARTNER_SPEED_50G)
-		__set_bit(QED_LM_50000baseKR2_Full, if_link->lp_caps);
-	if (link.partner_adv_speed & QED_LINK_PARTNER_SPEED_100G)
-		__set_bit(QED_LM_100000baseKR4_Full, if_link->lp_caps);
-
 	if (link.an_complete)
 		__set_bit(QED_LM_Autoneg, if_link->lp_caps);
 	if (link.partner_adv_pause)
-- 
2.25.1