Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F4A8C43217 for ; Mon, 6 Dec 2021 16:00:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1443055AbhLFQAB (ORCPT ); Mon, 6 Dec 2021 11:00:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33162 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1390522AbhLFPm3 (ORCPT ); Mon, 6 Dec 2021 10:42:29 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E9F9C061D60; Mon, 6 Dec 2021 07:27:26 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D31F16132F; Mon, 6 Dec 2021 15:27:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8AB66C34901; Mon, 6 Dec 2021 15:27:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1638804445; bh=Ulaw7TPX0/PCuzJ0naAK+QYJAEjnAj4E/FACh2uhOS0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NMNJSKzkro53SVtcqH8ORVS2a7ialK0+xE0r45KcVMTIKUS8xPlBBYLY1J4kgwNeH 7nleKtB0Wu0FPwX64ABqsVn4whh1LmN/a27FtJSQc2mKRF8YHCGRWC15dNNkMWfROz w8MpdLOnYmzLCUuDbCv4EqhZZ4oJ335TKCyiyrjg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dmitry Bogdanov , Sudarsana Reddy Kalluru , Igor Russkikh , "David S. Miller" Subject: [PATCH 5.15 150/207] atlantic: Fix statistics logic for production hardware Date: Mon, 6 Dec 2021 15:56:44 +0100 Message-Id: <20211206145615.429866696@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211206145610.172203682@linuxfoundation.org> References: <20211206145610.172203682@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dmitry Bogdanov commit 2087ced0fc3a6d45203925750a2b1bcd5402e639 upstream. B0 is the main and widespread device revision of atlantic2 HW. In the current state, driver will incorrectly fetch the statistics for this revision. Fixes: 5cfd54d7dc186 ("net: atlantic: minimal A2 fw_ops") Signed-off-by: Dmitry Bogdanov Signed-off-by: Sudarsana Reddy Kalluru Signed-off-by: Igor Russkikh Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/aquantia/atlantic/aq_hw.h | 2 drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 10 drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c | 15 + drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.h | 38 +++ drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils_fw.c | 101 ++++++++-- 5 files changed, 139 insertions(+), 27 deletions(-) --- a/drivers/net/ethernet/aquantia/atlantic/aq_hw.h +++ b/drivers/net/ethernet/aquantia/atlantic/aq_hw.h @@ -80,6 +80,8 @@ struct aq_hw_link_status_s { }; struct aq_stats_s { + u64 brc; + u64 btc; u64 uprc; u64 mprc; u64 bprc; --- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c +++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c @@ -903,8 +903,14 @@ u64 *aq_nic_get_stats(struct aq_nic_s *s data[++i] = stats->mbtc; data[++i] = stats->bbrc; data[++i] = stats->bbtc; - data[++i] = stats->ubrc + stats->mbrc + stats->bbrc; - data[++i] = stats->ubtc + stats->mbtc + stats->bbtc; + if (stats->brc) + data[++i] = stats->brc; + else + data[++i] = stats->ubrc + stats->mbrc + stats->bbrc; + if (stats->btc) + data[++i] = stats->btc; + else + data[++i] = stats->ubtc + stats->mbtc + stats->bbtc; data[++i] = stats->dma_pkt_rc; data[++i] = stats->dma_pkt_tc; data[++i] = stats->dma_oct_rc; --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c @@ -867,12 +867,20 @@ static int hw_atl_fw1x_deinit(struct aq_ int hw_atl_utils_update_stats(struct aq_hw_s *self) { struct aq_stats_s *cs = &self->curr_stats; + struct aq_stats_s curr_stats = *cs; struct hw_atl_utils_mbox mbox; + bool corrupted_stats = false; hw_atl_utils_mpi_read_stats(self, &mbox); -#define AQ_SDELTA(_N_) (self->curr_stats._N_ += \ - mbox.stats._N_ - self->last_stats._N_) +#define AQ_SDELTA(_N_) \ +do { \ + if (!corrupted_stats && \ + ((s64)(mbox.stats._N_ - self->last_stats._N_)) >= 0) \ + curr_stats._N_ += mbox.stats._N_ - self->last_stats._N_; \ + else \ + corrupted_stats = true; \ +} while (0) if (self->aq_link_status.mbps) { AQ_SDELTA(uprc); @@ -892,6 +900,9 @@ int hw_atl_utils_update_stats(struct aq_ AQ_SDELTA(bbrc); AQ_SDELTA(bbtc); AQ_SDELTA(dpc); + + if (!corrupted_stats) + *cs = curr_stats; } #undef AQ_SDELTA --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.h +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.h @@ -239,7 +239,8 @@ struct version_s { u8 minor; u16 build; } phy; - u32 rsvd; + u32 drv_iface_ver:4; + u32 rsvd:28; }; struct link_status_s { @@ -424,7 +425,7 @@ struct cable_diag_status_s { u16 rsvd2; }; -struct statistics_s { +struct statistics_a0_s { struct { u32 link_up; u32 link_down; @@ -457,6 +458,33 @@ struct statistics_s { u32 reserve_fw_gap; }; +struct __packed statistics_b0_s { + u64 rx_good_octets; + u64 rx_pause_frames; + u64 rx_good_frames; + u64 rx_errors; + u64 rx_unicast_frames; + u64 rx_multicast_frames; + u64 rx_broadcast_frames; + + u64 tx_good_octets; + u64 tx_pause_frames; + u64 tx_good_frames; + u64 tx_errors; + u64 tx_unicast_frames; + u64 tx_multicast_frames; + u64 tx_broadcast_frames; + + u32 main_loop_cycles; +}; + +struct __packed statistics_s { + union __packed { + struct statistics_a0_s a0; + struct statistics_b0_s b0; + }; +}; + struct filter_caps_s { u8 l2_filters_base_index:6; u8 flexible_filter_mask:2; @@ -545,7 +573,7 @@ struct management_status_s { u32 rsvd5; }; -struct fw_interface_out { +struct __packed fw_interface_out { struct transaction_counter_s transaction_id; struct version_s version; struct link_status_s link_status; @@ -569,7 +597,6 @@ struct fw_interface_out { struct core_dump_s core_dump; u32 rsvd11; struct statistics_s stats; - u32 rsvd12; struct filter_caps_s filter_caps; struct device_caps_s device_caps; u32 rsvd13; @@ -592,6 +619,9 @@ struct fw_interface_out { #define AQ_HOST_MODE_LOW_POWER 3U #define AQ_HOST_MODE_SHUTDOWN 4U +#define AQ_A2_FW_INTERFACE_A0 0 +#define AQ_A2_FW_INTERFACE_B0 1 + int hw_atl2_utils_initfw(struct aq_hw_s *self, const struct aq_fw_ops **fw_ops); int hw_atl2_utils_soft_reset(struct aq_hw_s *self); --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils_fw.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils_fw.c @@ -333,18 +333,22 @@ static int aq_a2_fw_get_mac_permanent(st return 0; } -static int aq_a2_fw_update_stats(struct aq_hw_s *self) +static void aq_a2_fill_a0_stats(struct aq_hw_s *self, + struct statistics_s *stats) { struct hw_atl2_priv *priv = (struct hw_atl2_priv *)self->priv; - struct statistics_s stats; - int err; - - err = hw_atl2_shared_buffer_read_safe(self, stats, &stats); - if (err) - return err; - -#define AQ_SDELTA(_N_, _F_) (self->curr_stats._N_ += \ - stats.msm._F_ - priv->last_stats.msm._F_) + struct aq_stats_s *cs = &self->curr_stats; + struct aq_stats_s curr_stats = *cs; + bool corrupted_stats = false; + +#define AQ_SDELTA(_N, _F) \ +do { \ + if (!corrupted_stats && \ + ((s64)(stats->a0.msm._F - priv->last_stats.a0.msm._F)) >= 0) \ + curr_stats._N += stats->a0.msm._F - priv->last_stats.a0.msm._F;\ + else \ + corrupted_stats = true; \ +} while (0) if (self->aq_link_status.mbps) { AQ_SDELTA(uprc, rx_unicast_frames); @@ -363,17 +367,76 @@ static int aq_a2_fw_update_stats(struct AQ_SDELTA(mbtc, tx_multicast_octets); AQ_SDELTA(bbrc, rx_broadcast_octets); AQ_SDELTA(bbtc, tx_broadcast_octets); + + if (!corrupted_stats) + *cs = curr_stats; + } +#undef AQ_SDELTA + +} + +static void aq_a2_fill_b0_stats(struct aq_hw_s *self, + struct statistics_s *stats) +{ + struct hw_atl2_priv *priv = (struct hw_atl2_priv *)self->priv; + struct aq_stats_s *cs = &self->curr_stats; + struct aq_stats_s curr_stats = *cs; + bool corrupted_stats = false; + +#define AQ_SDELTA(_N, _F) \ +do { \ + if (!corrupted_stats && \ + ((s64)(stats->b0._F - priv->last_stats.b0._F)) >= 0) \ + curr_stats._N += stats->b0._F - priv->last_stats.b0._F; \ + else \ + corrupted_stats = true; \ +} while (0) + + if (self->aq_link_status.mbps) { + AQ_SDELTA(uprc, rx_unicast_frames); + AQ_SDELTA(mprc, rx_multicast_frames); + AQ_SDELTA(bprc, rx_broadcast_frames); + AQ_SDELTA(erpr, rx_errors); + AQ_SDELTA(brc, rx_good_octets); + + AQ_SDELTA(uptc, tx_unicast_frames); + AQ_SDELTA(mptc, tx_multicast_frames); + AQ_SDELTA(bptc, tx_broadcast_frames); + AQ_SDELTA(erpt, tx_errors); + AQ_SDELTA(btc, tx_good_octets); + + if (!corrupted_stats) + *cs = curr_stats; } #undef AQ_SDELTA - self->curr_stats.dma_pkt_rc = - hw_atl_stats_rx_dma_good_pkt_counter_get(self); - self->curr_stats.dma_pkt_tc = - hw_atl_stats_tx_dma_good_pkt_counter_get(self); - self->curr_stats.dma_oct_rc = - hw_atl_stats_rx_dma_good_octet_counter_get(self); - self->curr_stats.dma_oct_tc = - hw_atl_stats_tx_dma_good_octet_counter_get(self); - self->curr_stats.dpc = hw_atl_rpb_rx_dma_drop_pkt_cnt_get(self); +} + +static int aq_a2_fw_update_stats(struct aq_hw_s *self) +{ + struct hw_atl2_priv *priv = (struct hw_atl2_priv *)self->priv; + struct aq_stats_s *cs = &self->curr_stats; + struct statistics_s stats; + struct version_s version; + int err; + + err = hw_atl2_shared_buffer_read_safe(self, version, &version); + if (err) + return err; + + err = hw_atl2_shared_buffer_read_safe(self, stats, &stats); + if (err) + return err; + + if (version.drv_iface_ver == AQ_A2_FW_INTERFACE_A0) + aq_a2_fill_a0_stats(self, &stats); + else + aq_a2_fill_b0_stats(self, &stats); + + cs->dma_pkt_rc = hw_atl_stats_rx_dma_good_pkt_counter_get(self); + cs->dma_pkt_tc = hw_atl_stats_tx_dma_good_pkt_counter_get(self); + cs->dma_oct_rc = hw_atl_stats_rx_dma_good_octet_counter_get(self); + cs->dma_oct_tc = hw_atl_stats_tx_dma_good_octet_counter_get(self); + cs->dpc = hw_atl_rpb_rx_dma_drop_pkt_cnt_get(self); memcpy(&priv->last_stats, &stats, sizeof(stats));