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[144.49.247.15]) by smtp-relay.gmail.com with ESMTPS id d9443c01a7336-2b27471dfcesm9146165ad.9.2026.04.06.11.05.42 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 06 Apr 2026 11:05:43 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-pl1-f197.google.com with SMTP id d9443c01a7336-2b242b9359aso40100985ad.0 for ; Mon, 06 Apr 2026 11:05:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1775498741; x=1776103541; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=62L+lkwkabTqrbJgOlUnrsnIX9RqZuB3+ZmXt/1peyc=; b=VNsq+l5wZz4JqxQ6dVCwegLb92wOKDtwD68XY8naDdjJApx3mCIasU842BGbgr+tMx 6z1clJzABLARHBau9KJ2vSbOmbd68S4AIEHoviufnzZCDVyQmAfcDZ44hwZMmzer77ZT vyiYmpYMGJvF4fjcgLyIhY4W5EXcy55Fgwx0M= X-Received: by 2002:a17:902:7c89:b0:2ae:5eee:7a5 with SMTP id d9443c01a7336-2b28167aa4fmr99852955ad.12.1775498741338; Mon, 06 Apr 2026 11:05:41 -0700 (PDT) X-Received: by 2002:a17:902:7c89:b0:2ae:5eee:7a5 with SMTP id d9443c01a7336-2b28167aa4fmr99852735ad.12.1775498740746; Mon, 06 Apr 2026 11:05:40 -0700 (PDT) Received: from localhost.localdomain ([192.19.203.250]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b2749a475fsm140625145ad.61.2026.04.06.11.05.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Apr 2026 11:05:40 -0700 (PDT) From: Bhargava Marreddy To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, michael.chan@broadcom.com, pavan.chebbi@broadcom.com, vsrama-krishna.nemani@broadcom.com, vikas.gupta@broadcom.com, Bhargava Marreddy Subject: [PATCH net-next v12 09/10] bng_en: implement netdev_stat_ops Date: Mon, 6 Apr 2026 23:34:19 +0530 Message-ID: <20260406180420.279470-10-bhargava.marreddy@broadcom.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260406180420.279470-1-bhargava.marreddy@broadcom.com> References: <20260406180420.279470-1-bhargava.marreddy@broadcom.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Implement netdev_stat_ops to provide standardized per-queue statistics via the Netlink API. Below is the description of the hardware drop counters: rx-hw-drop-overruns: Packets dropped by HW due to resource limitations (e.g., no BDs available in the host ring). rx-hw-drops: Total packets dropped by HW (sum of overruns and error drops). tx-hw-drop-errors: Packets dropped by HW because they were invalid or malformed. tx-hw-drops: Total packets dropped by HW (sum of resource limitations and error drops). The implementation was verified using the ynl tool: ./tools/net/ynl/pyynl/cli.py --spec \ Documentation/netlink/specs/netdev.yaml --dump qstats-get --json \ '{"ifindex":14, "scope":"queue"}' [{'ifindex': 14, 'queue-id': 0, 'queue-type': 'rx', 'rx-bytes': 758, 'rx-hw-drop-overruns': 0, 'rx-hw-drops': 0, 'rx-packets': 11}, {'ifindex': 14, 'queue-id': 1, 'queue-type': 'rx', 'rx-bytes': 0, 'rx-hw-drop-overruns': 0, 'rx-hw-drops': 0, 'rx-packets': 0}, {'ifindex': 14, 'queue-id': 0, 'queue-type': 'tx', 'tx-bytes': 0, 'tx-hw-drop-errors': 0, 'tx-hw-drops': 0, 'tx-packets': 0}, {'ifindex': 14, 'queue-id': 1, 'queue-type': 'tx', 'tx-bytes': 0, 'tx-hw-drop-errors': 0, 'tx-hw-drops': 0, 'tx-packets': 0}, {'ifindex': 14, 'queue-id': 2, 'queue-type': 'tx', 'tx-bytes': 810, 'tx-hw-drop-errors': 0, 'tx-hw-drops': 0, 'tx-packets': 10},] Signed-off-by: Bhargava Marreddy Reviewed-by: Vikas Gupta --- .../net/ethernet/broadcom/bnge/bnge_netdev.c | 227 ++++++++++++++++++ .../net/ethernet/broadcom/bnge/bnge_netdev.h | 7 + 2 files changed, 234 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c index 4148a9ec6d23..70768193004c 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c +++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c @@ -2860,6 +2860,7 @@ static int bnge_open_core(struct bnge_net *bn) } set_bit(BNGE_STATE_OPEN, &bd->state); + set_bit(BNGE_STATE_STATS_ENABLE, &bn->state); bnge_enable_int(bn); @@ -2898,6 +2899,77 @@ static int bnge_shutdown_nic(struct bnge_net *bn) return 0; } +static void bnge_add_prev_ring_stats64(struct bnge_net *bn, + struct rtnl_link_stats64 *stats) +{ + struct netdev_queue_stats_rx *rx_save = &bn->rxq_prv_stats; + struct netdev_queue_stats_tx *tx_save = &bn->txq_prv_stats; + struct rtnl_link_stats64 *stats64_save = &bn->prv_stats64; + + stats->rx_packets += rx_save->packets; + stats->tx_packets += tx_save->packets; + stats->rx_bytes += rx_save->bytes; + stats->tx_bytes += tx_save->bytes; + stats->rx_missed_errors += rx_save->hw_drop_overruns; + stats->tx_dropped += tx_save->hw_drop_errors; + + stats->multicast += stats64_save->multicast; +} + +static void bnge_get_ring_stats64(struct bnge_dev *bd, + struct rtnl_link_stats64 *stats) +{ + struct bnge_net *bn = netdev_priv(bd->netdev); + int i; + + for (i = 0; i < bd->nq_nr_rings; i++) { + struct bnge_napi *bnapi = bn->bnapi[i]; + u64 tx_bytes, tx_packets, tx_dropped; + u64 multicast, rx_missed_errors; + struct bnge_nq_ring_info *nqr; + u64 rx_bytes, rx_packets; + unsigned int start; + u64 *sw; + + nqr = &bnapi->nq_ring; + sw = nqr->stats.sw_stats; + + do { + start = u64_stats_fetch_begin(&nqr->stats.syncp); + + rx_packets = BNGE_GET_RING_STATS64(sw, rx_ucast_pkts); + rx_packets += BNGE_GET_RING_STATS64(sw, rx_mcast_pkts); + rx_packets += BNGE_GET_RING_STATS64(sw, rx_bcast_pkts); + + tx_packets = BNGE_GET_RING_STATS64(sw, tx_ucast_pkts); + tx_packets += BNGE_GET_RING_STATS64(sw, tx_mcast_pkts); + tx_packets += BNGE_GET_RING_STATS64(sw, tx_bcast_pkts); + + rx_bytes = BNGE_GET_RING_STATS64(sw, rx_ucast_bytes); + rx_bytes += BNGE_GET_RING_STATS64(sw, rx_mcast_bytes); + rx_bytes += BNGE_GET_RING_STATS64(sw, rx_bcast_bytes); + + tx_bytes = BNGE_GET_RING_STATS64(sw, tx_ucast_bytes); + tx_bytes += BNGE_GET_RING_STATS64(sw, tx_mcast_bytes); + tx_bytes += BNGE_GET_RING_STATS64(sw, tx_bcast_bytes); + + multicast = BNGE_GET_RING_STATS64(sw, rx_mcast_pkts); + rx_missed_errors = + BNGE_GET_RING_STATS64(sw, rx_discard_pkts); + tx_dropped = + BNGE_GET_RING_STATS64(sw, tx_error_pkts); + } while (u64_stats_fetch_retry(&nqr->stats.syncp, start)); + + stats->rx_packets += rx_packets; + stats->tx_packets += tx_packets; + stats->rx_bytes += rx_bytes; + stats->tx_bytes += tx_bytes; + stats->multicast += multicast; + stats->rx_missed_errors += rx_missed_errors; + stats->tx_dropped += tx_dropped; + } +} + static void bnge_get_port_stats64(struct bnge_net *bn, struct rtnl_link_stats64 *stats) { @@ -2929,6 +3001,22 @@ static void bnge_get_port_stats64(struct bnge_net *bn, } while (u64_stats_fetch_retry(&bn->port_stats.syncp, start)); } +static void bnge_fill_prev_stats64(struct bnge_net *bn, + struct rtnl_link_stats64 *stats) +{ + struct netdev_queue_stats_rx *rx_save = &bn->rxq_prv_stats; + struct netdev_queue_stats_tx *tx_save = &bn->txq_prv_stats; + struct rtnl_link_stats64 *stats64_save = &bn->prv_stats64; + + stats->rx_packets = rx_save->packets; + stats->tx_packets = tx_save->packets; + stats->rx_bytes = rx_save->bytes; + stats->tx_bytes = tx_save->bytes; + stats->rx_missed_errors = rx_save->hw_drop_overruns; + stats->tx_dropped = tx_save->hw_drop_errors; + stats->multicast = stats64_save->multicast; +} + static void bnge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) { @@ -2936,6 +3024,57 @@ static void bnge_get_stats64(struct net_device *dev, if (bn->flags & BNGE_FLAG_PORT_STATS) bnge_get_port_stats64(bn, stats); + + spin_lock_bh(&bn->stats_lock); + if (!test_bit(BNGE_STATE_STATS_ENABLE, &bn->state)) { + bnge_fill_prev_stats64(bn, stats); + spin_unlock_bh(&bn->stats_lock); + return; + } + + bnge_get_ring_stats64(bn->bd, stats); + bnge_add_prev_ring_stats64(bn, stats); + spin_unlock_bh(&bn->stats_lock); +} + +static void bnge_save_ring_stats(struct bnge_net *bn) +{ + struct netdev_queue_stats_rx *rx_save = &bn->rxq_prv_stats; + struct netdev_queue_stats_tx *tx_save = &bn->txq_prv_stats; + struct rtnl_link_stats64 *stats64_save = &bn->prv_stats64; + int i; + + for (i = 0; i < bn->bd->nq_nr_rings; i++) { + struct bnge_napi *bnapi = bn->bnapi[i]; + struct bnge_nq_ring_info *nqr; + u64 *sw; + + nqr = &bnapi->nq_ring; + sw = nqr->stats.sw_stats; + + rx_save->packets += BNGE_GET_RING_STATS64(sw, rx_ucast_pkts); + rx_save->packets += BNGE_GET_RING_STATS64(sw, rx_mcast_pkts); + rx_save->packets += BNGE_GET_RING_STATS64(sw, rx_bcast_pkts); + rx_save->bytes += BNGE_GET_RING_STATS64(sw, rx_ucast_bytes); + rx_save->bytes += BNGE_GET_RING_STATS64(sw, rx_mcast_bytes); + rx_save->bytes += BNGE_GET_RING_STATS64(sw, rx_bcast_bytes); + rx_save->hw_drop_overruns += BNGE_GET_RING_STATS64(sw, rx_discard_pkts); + rx_save->hw_drops += BNGE_GET_RING_STATS64(sw, rx_error_pkts) + + BNGE_GET_RING_STATS64(sw, rx_discard_pkts); + + tx_save->packets += BNGE_GET_RING_STATS64(sw, tx_ucast_pkts); + tx_save->packets += BNGE_GET_RING_STATS64(sw, tx_mcast_pkts); + tx_save->packets += BNGE_GET_RING_STATS64(sw, tx_bcast_pkts); + tx_save->bytes += BNGE_GET_RING_STATS64(sw, tx_ucast_bytes); + tx_save->bytes += BNGE_GET_RING_STATS64(sw, tx_mcast_bytes); + tx_save->bytes += BNGE_GET_RING_STATS64(sw, tx_bcast_bytes); + tx_save->hw_drop_errors += BNGE_GET_RING_STATS64(sw, tx_error_pkts); + tx_save->hw_drops += BNGE_GET_RING_STATS64(sw, tx_discard_pkts) + + BNGE_GET_RING_STATS64(sw, tx_error_pkts); + + stats64_save->multicast += + BNGE_GET_RING_STATS64(sw, rx_mcast_pkts); + } } static void bnge_close_core(struct bnge_net *bn) @@ -2949,6 +3088,13 @@ static void bnge_close_core(struct bnge_net *bn) timer_delete_sync(&bn->timer); bnge_shutdown_nic(bn); bnge_disable_napi(bn); + + /* Save ring stats before shutdown */ + spin_lock_bh(&bn->stats_lock); + bnge_save_ring_stats(bn); + clear_bit(BNGE_STATE_STATS_ENABLE, &bn->state); + spin_unlock_bh(&bn->stats_lock); + bnge_free_all_rings_bufs(bn); bnge_free_irq(bn); bnge_del_napi(bn); @@ -2967,6 +3113,85 @@ static int bnge_close(struct net_device *dev) return 0; } +static void bnge_get_queue_stats_rx(struct net_device *dev, int i, + struct netdev_queue_stats_rx *stats) +{ + struct bnge_net *bn = netdev_priv(dev); + struct bnge_nq_ring_info *nqr; + u64 *sw; + + if (!bn->bnapi) + return; + + nqr = &bn->bnapi[i]->nq_ring; + sw = nqr->stats.sw_stats; + + stats->packets = 0; + stats->packets += BNGE_GET_RING_STATS64(sw, rx_ucast_pkts); + stats->packets += BNGE_GET_RING_STATS64(sw, rx_mcast_pkts); + stats->packets += BNGE_GET_RING_STATS64(sw, rx_bcast_pkts); + + stats->bytes = 0; + stats->bytes += BNGE_GET_RING_STATS64(sw, rx_ucast_bytes); + stats->bytes += BNGE_GET_RING_STATS64(sw, rx_mcast_bytes); + stats->bytes += BNGE_GET_RING_STATS64(sw, rx_bcast_bytes); + + stats->hw_drop_overruns = BNGE_GET_RING_STATS64(sw, rx_discard_pkts); + stats->hw_drops = BNGE_GET_RING_STATS64(sw, rx_error_pkts) + + stats->hw_drop_overruns; +} + +static void bnge_get_queue_stats_tx(struct net_device *dev, int i, + struct netdev_queue_stats_tx *stats) +{ + struct bnge_net *bn = netdev_priv(dev); + struct bnge_napi *bnapi; + u64 *sw; + + if (!bn->tx_ring) + return; + + bnapi = bn->tx_ring[bn->tx_ring_map[i]].bnapi; + sw = bnapi->nq_ring.stats.sw_stats; + + stats->packets = 0; + stats->packets += BNGE_GET_RING_STATS64(sw, tx_ucast_pkts); + stats->packets += BNGE_GET_RING_STATS64(sw, tx_mcast_pkts); + stats->packets += BNGE_GET_RING_STATS64(sw, tx_bcast_pkts); + + stats->bytes = 0; + stats->bytes += BNGE_GET_RING_STATS64(sw, tx_ucast_bytes); + stats->bytes += BNGE_GET_RING_STATS64(sw, tx_mcast_bytes); + stats->bytes += BNGE_GET_RING_STATS64(sw, tx_bcast_bytes); + + stats->hw_drop_errors = BNGE_GET_RING_STATS64(sw, tx_error_pkts); + stats->hw_drops = BNGE_GET_RING_STATS64(sw, tx_discard_pkts) + + stats->hw_drop_errors; +} + +static void bnge_get_base_stats(struct net_device *dev, + struct netdev_queue_stats_rx *rx, + struct netdev_queue_stats_tx *tx) +{ + struct bnge_net *bn = netdev_priv(dev); + + rx->packets = bn->rxq_prv_stats.packets; + rx->bytes = bn->rxq_prv_stats.bytes; + rx->hw_drops = bn->rxq_prv_stats.hw_drops; + rx->hw_drop_overruns = bn->rxq_prv_stats.hw_drop_overruns; + + tx->packets = bn->txq_prv_stats.packets; + tx->bytes = bn->txq_prv_stats.bytes; + tx->hw_drops = bn->txq_prv_stats.hw_drops; + tx->hw_drop_errors = bn->txq_prv_stats.hw_drop_errors; +} + +static const struct netdev_stat_ops bnge_stat_ops = { + .get_queue_stats_rx = bnge_get_queue_stats_rx, + .get_queue_stats_tx = bnge_get_queue_stats_tx, + .get_base_stats = bnge_get_base_stats, +}; + static const struct net_device_ops bnge_netdev_ops = { .ndo_open = bnge_open, .ndo_stop = bnge_close, @@ -3113,6 +3338,7 @@ int bnge_netdev_alloc(struct bnge_dev *bd, int max_irqs) bd->netdev = netdev; netdev->netdev_ops = &bnge_netdev_ops; + netdev->stat_ops = &bnge_stat_ops; bnge_set_ethtool_ops(netdev); @@ -3212,6 +3438,7 @@ int bnge_netdev_alloc(struct bnge_dev *bd, int max_irqs) rc = bnge_alloc_port_stats(bn); if (rc) goto err_free_workq; + spin_lock_init(&bn->stats_lock); netdev->request_ops_lock = true; rc = register_netdev(netdev); diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h index a73f51b01bc2..f4636b5b0cf3 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h +++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h @@ -8,6 +8,7 @@ #include #include #include +#include #include "bnge_db.h" #include "bnge_hw_def.h" #include "bnge_link.h" @@ -264,6 +265,7 @@ struct bnge_stats_mem { enum bnge_net_state { BNGE_STATE_NAPI_DISABLED, + BNGE_STATE_STATS_ENABLE, }; #define BNGE_TIMER_INTERVAL HZ @@ -361,6 +363,11 @@ struct bnge_net { u16 fw_rx_stats_ext_size; u16 fw_tx_stats_ext_size; + struct netdev_queue_stats_rx rxq_prv_stats; + struct netdev_queue_stats_tx txq_prv_stats; + struct rtnl_link_stats64 prv_stats64; + spinlock_t stats_lock; + u8 pri2cos_idx[8]; bool pri2cos_valid; }; -- 2.47.3