From 3b0b1d34076a9bb103d3ce81795acf1ed9b3ca2c Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Mon, 13 Jun 2016 02:25:37 -0400 Subject: [PATCH] bnxt_en: Don't allow autoneg on cards that don't support it. Orabug: 23221795 Some cards do not support autoneg. The current code does not prevent the user from enabling autoneg with ethtool on such cards, causing confusion. Firmware provides the autoneg capability information and we just need to store it in the support_auto_speeds field in bnxt_link_info struct. The ethtool set_settings() call will check this field before proceeding with autoneg. Signed-off-by: Michael Chan Signed-off-by: David S. Miller (cherry picked from commit 93ed8117336485af2cedb069d28f3d4270fb90a1) Signed-off-by: Brian Maly --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 9 ++++++ drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 + .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 29 +++++++++++++------ 3 files changed, 30 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 63bf51583c0f..bb94d6c92c00 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -4842,6 +4842,7 @@ static int bnxt_hwrm_phy_qcaps(struct bnxt *bp) int rc = 0; struct hwrm_port_phy_qcaps_input req = {0}; struct hwrm_port_phy_qcaps_output *resp = bp->hwrm_cmd_resp_addr; + struct bnxt_link_info *link_info = &bp->link_info; if (bp->hwrm_spec_code < 0x10201) return 0; @@ -4864,6 +4865,8 @@ static int bnxt_hwrm_phy_qcaps(struct bnxt *bp) bp->lpi_tmr_hi = le32_to_cpu(resp->valid_tx_lpi_timer_high) & PORT_PHY_QCAPS_RESP_TX_LPI_TIMER_HIGH_MASK; } + link_info->support_auto_speeds = + le16_to_cpu(resp->supported_speeds_auto_mode); hwrm_phy_qcaps_exit: mutex_unlock(&bp->hwrm_cmd_lock); @@ -6426,6 +6429,12 @@ static int bnxt_probe_phy(struct bnxt *bp) return rc; } + /* Older firmware does not have supported_auto_speeds, so assume + * that all supported speeds can be autonegotiated. + */ + if (link_info->auto_link_speeds && !link_info->support_auto_speeds) + link_info->support_auto_speeds = link_info->support_speeds; + /*initialize the ethool setting copy with NVM settings */ if (BNXT_AUTO_MODE(link_info->auto_mode)) { link_info->autoneg = BNXT_AUTONEG_SPEED; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index c1b41fb216dc..04cc69bb9e6a 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -849,6 +849,7 @@ struct bnxt_link_info { #define BNXT_LINK_SPEED_MSK_25GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_25GB #define BNXT_LINK_SPEED_MSK_40GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_40GB #define BNXT_LINK_SPEED_MSK_50GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_50GB + u16 support_auto_speeds; u16 lp_auto_link_speeds; u16 force_link_speed; u32 preemphasis; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 0fe8a47df755..872890277e43 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -686,6 +686,17 @@ static u32 bnxt_fw_to_ethtool_support_spds(struct bnxt_link_info *link_info) return supported | SUPPORTED_Pause | SUPPORTED_Asym_Pause; } +static u32 bnxt_fw_to_ethtool_support_adv_spds(struct bnxt_link_info *link_info) +{ + u16 fw_speeds = link_info->support_auto_speeds; + u32 supported; + + supported = _bnxt_fw_to_ethtool_adv_spds(fw_speeds, 0); + if (supported) + supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; + return supported; +} + u32 bnxt_fw_to_ethtool_speed(u16 fw_link_speed) { switch (fw_link_speed) { @@ -718,7 +729,7 @@ static int bnxt_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) cmd->supported = bnxt_fw_to_ethtool_support_spds(link_info); - if (link_info->auto_link_speeds) + if (link_info->support_auto_speeds) cmd->supported |= SUPPORTED_Autoneg; if (link_info->autoneg) { @@ -854,8 +865,14 @@ static int bnxt_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) return rc; if (cmd->autoneg == AUTONEG_ENABLE) { - u32 supported_spds = bnxt_fw_to_ethtool_support_spds(link_info); + u32 supported_spds = + bnxt_fw_to_ethtool_support_adv_spds(link_info); + if (!supported_spds) { + netdev_err(dev, "Autoneg not supported\n"); + rc = -EINVAL; + goto set_setting_exit; + } if (cmd->advertising & ~(supported_spds | ADVERTISED_Autoneg | ADVERTISED_TP | ADVERTISED_FIBRE)) { netdev_err(dev, "Unsupported advertising mask (adv: 0x%x)\n", @@ -864,15 +881,9 @@ static int bnxt_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) goto set_setting_exit; } fw_advertising = bnxt_get_fw_auto_link_speeds(cmd->advertising); - if (fw_advertising & ~link_info->support_speeds) { - netdev_err(dev, "Advertising parameters are not supported! (adv: 0x%x)\n", - cmd->advertising); - rc = -EINVAL; - goto set_setting_exit; - } link_info->autoneg |= BNXT_AUTONEG_SPEED; if (!fw_advertising) - link_info->advertising = link_info->support_speeds; + link_info->advertising = link_info->support_auto_speeds; else link_info->advertising = fw_advertising; /* any change to autoneg will cause link change, therefore the -- 2.50.1