From: Mohsin Bashir Date: Mon, 25 Aug 2025 20:02:06 +0000 (-0700) Subject: eth: fbnic: Add pause stats support X-Git-Tag: v6.18-rc1~132^2~315^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e9faf4db5f26123750676a13682c322ac85064de;p=thirdparty%2Flinux.git eth: fbnic: Add pause stats support Add support to read pause stats for fbnic. Unlike FEC and PCS stats, pause stats won't wrap, do not fetch them under the service task. Since, they are exclusively accessed via the ethtool API, don't include them in fbnic_get_hw_stats(). ]# ethtool -I -a eth0 Pause parameters for eth0: Autonegotiate: on RX: off TX: off Statistics: tx_pause_frames: 0 rx_pause_frames: 0 Signed-off-by: Mohsin Bashir Reviewed-by: Jacob Keller Link: https://patch.msgid.link/20250825200206.2357713-7-kuba@kernel.org Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_csr.h b/drivers/net/ethernet/meta/fbnic/fbnic_csr.h index 69cb73ca8bca5..e2fffe1597e9f 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_csr.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_csr.h @@ -844,6 +844,10 @@ enum { #define FBNIC_CSR_END_SIG 0x1184e /* CSR section delimiter */ #define FBNIC_CSR_START_MAC_STAT 0x11a00 +#define FBNIC_MAC_STAT_RX_XOFF_STB_L 0x11a00 /* 0x46800 */ +#define FBNIC_MAC_STAT_RX_XOFF_STB_H 0x11a01 /* 0x46804 */ +#define FBNIC_MAC_STAT_TX_XOFF_STB_L 0x11a04 /* 0x46810 */ +#define FBNIC_MAC_STAT_TX_XOFF_STB_H 0x11a05 /* 0x46814 */ #define FBNIC_MAC_STAT_RX_BYTE_COUNT_L 0x11a08 /* 0x46820 */ #define FBNIC_MAC_STAT_RX_BYTE_COUNT_H 0x11a09 /* 0x46824 */ #define FBNIC_MAC_STAT_RX_ALIGN_ERROR_L 0x11a0a /* 0x46828 */ diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c index 4194b30f10748..b4ff98ee2051e 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c @@ -1641,6 +1641,22 @@ static void fbnic_set_counter(u64 *stat, struct fbnic_stat_counter *counter) *stat = counter->value; } +static void +fbnic_get_pause_stats(struct net_device *netdev, + struct ethtool_pause_stats *pause_stats) +{ + struct fbnic_net *fbn = netdev_priv(netdev); + struct fbnic_mac_stats *mac_stats; + struct fbnic_dev *fbd = fbn->fbd; + + mac_stats = &fbd->hw_stats.mac; + + fbd->mac->get_pause_stats(fbd, false, &mac_stats->pause); + + pause_stats->tx_pause_frames = mac_stats->pause.tx_pause_frames.value; + pause_stats->rx_pause_frames = mac_stats->pause.rx_pause_frames.value; +} + static void fbnic_get_fec_stats(struct net_device *netdev, struct ethtool_fec_stats *fec_stats) @@ -1801,6 +1817,7 @@ static const struct ethtool_ops fbnic_ethtool_ops = { .set_coalesce = fbnic_set_coalesce, .get_ringparam = fbnic_get_ringparam, .set_ringparam = fbnic_set_ringparam, + .get_pause_stats = fbnic_get_pause_stats, .get_pauseparam = fbnic_phylink_get_pauseparam, .set_pauseparam = fbnic_phylink_set_pauseparam, .get_strings = fbnic_get_strings, diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c index 9e7becba73868..8b9b2076beecd 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.c @@ -536,6 +536,7 @@ static void fbnic_reset_hw_mac_stats(struct fbnic_dev *fbd, const struct fbnic_mac *mac = fbd->mac; mac->get_eth_mac_stats(fbd, true, &mac_stats->eth_mac); + mac->get_pause_stats(fbd, true, &mac_stats->pause); mac->get_eth_ctrl_stats(fbd, true, &mac_stats->eth_ctrl); mac->get_rmon_stats(fbd, true, &mac_stats->rmon); } diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h index baffae1868a67..aa3f429a9aeda 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hw_stats.h @@ -50,6 +50,12 @@ struct fbnic_rmon_stats { struct fbnic_stat_counter hist_tx[ETHTOOL_RMON_HIST_MAX]; }; +/* Note: not updated by fbnic_get_hw_stats() */ +struct fbnic_pause_stats { + struct fbnic_stat_counter tx_pause_frames; + struct fbnic_stat_counter rx_pause_frames; +}; + struct fbnic_eth_mac_stats { struct fbnic_stat_counter FramesTransmittedOK; struct fbnic_stat_counter FramesReceivedOK; @@ -73,6 +79,7 @@ struct fbnic_phy_stats { struct fbnic_mac_stats { struct fbnic_eth_mac_stats eth_mac; + struct fbnic_pause_stats pause; struct fbnic_eth_ctrl_stats eth_ctrl; struct fbnic_rmon_stats rmon; }; diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_mac.c b/drivers/net/ethernet/meta/fbnic/fbnic_mac.c index ffdaebd4002af..8f998d26b9a34 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_mac.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_mac.c @@ -709,6 +709,16 @@ fbnic_mac_get_eth_mac_stats(struct fbnic_dev *fbd, bool reset, MAC_STAT_TX_BROADCAST); } +static void +fbnic_mac_get_pause_stats(struct fbnic_dev *fbd, bool reset, + struct fbnic_pause_stats *pause_stats) +{ + fbnic_mac_stat_rd64(fbd, reset, pause_stats->tx_pause_frames, + MAC_STAT_TX_XOFF_STB); + fbnic_mac_stat_rd64(fbd, reset, pause_stats->rx_pause_frames, + MAC_STAT_RX_XOFF_STB); +} + static void fbnic_mac_get_eth_ctrl_stats(struct fbnic_dev *fbd, bool reset, struct fbnic_eth_ctrl_stats *ctrl_stats) @@ -856,6 +866,7 @@ static const struct fbnic_mac fbnic_mac_asic = { .get_fec_stats = fbnic_mac_get_fec_stats, .get_pcs_stats = fbnic_mac_get_pcs_stats, .get_eth_mac_stats = fbnic_mac_get_eth_mac_stats, + .get_pause_stats = fbnic_mac_get_pause_stats, .get_eth_ctrl_stats = fbnic_mac_get_eth_ctrl_stats, .get_rmon_stats = fbnic_mac_get_rmon_stats, .link_down = fbnic_mac_link_down_asic, diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_mac.h b/drivers/net/ethernet/meta/fbnic/fbnic_mac.h index 92dd6efb920a0..ede5ff0dae22f 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_mac.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_mac.h @@ -85,6 +85,8 @@ struct fbnic_mac { struct fbnic_pcs_stats *pcs_stats); void (*get_eth_mac_stats)(struct fbnic_dev *fbd, bool reset, struct fbnic_eth_mac_stats *mac_stats); + void (*get_pause_stats)(struct fbnic_dev *fbd, bool reset, + struct fbnic_pause_stats *pause_stats); void (*get_eth_ctrl_stats)(struct fbnic_dev *fbd, bool reset, struct fbnic_eth_ctrl_stats *ctrl_stats); void (*get_rmon_stats)(struct fbnic_dev *fbd, bool reset,