From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 103115F16 for ; Fri, 18 May 2018 09:59:52 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 May 2018 00:59:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,413,1520924400"; d="scan'208";a="40938307" Received: from rhorton-mobl1.ger.corp.intel.com (HELO FC23.ir.intel.com) ([163.33.230.73]) by fmsmga008.fm.intel.com with ESMTP; 18 May 2018 00:59:50 -0700 From: Remy Horton To: dev@dpdk.org Cc: Ferruh Yigit , Qi Zhang , Beilei Xing Date: Fri, 18 May 2018 08:59:48 +0100 Message-Id: <20180518075948.3177-1-remy.horton@intel.com> X-Mailer: git-send-email 2.9.5 Subject: [dpdk-dev] [PATCH] net/i40e: fix corruption of VF stats via port representor X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 May 2018 07:59:53 -0000 The resetting of stats on a VF involves the setting of an offset that is subtracted from future calls, rather zeroing of counters. However doing a stats reset on the port representor was also adjusting the values forwarded to the VF, which had the effect of corrupting the VF's counters. The fix is for the port representor to maintain its own stats offset, so the port representor and VF maintain independently-resettable counters Signed-off-by: Remy Horton --- drivers/net/i40e/i40e_ethdev.h | 2 + drivers/net/i40e/i40e_vf_representor.c | 119 +++++++++++++++++++++++++++++++-- 2 files changed, 117 insertions(+), 4 deletions(-) diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h index 55c8875..11c4c76 100644 --- a/drivers/net/i40e/i40e_ethdev.h +++ b/drivers/net/i40e/i40e_ethdev.h @@ -1083,6 +1083,8 @@ struct i40e_vf_representor { /**< Virtual Function ID */ struct i40e_adapter *adapter; /**< Private data store of assocaiated physical function */ + struct i40e_eth_stats stats_offset; + /**< Zero-point of VF statistics*/ }; extern const struct rte_flow_ops i40e_flow_ops; diff --git a/drivers/net/i40e/i40e_vf_representor.c b/drivers/net/i40e/i40e_vf_representor.c index 6026ec9..8dc94b4 100644 --- a/drivers/net/i40e/i40e_vf_representor.c +++ b/drivers/net/i40e/i40e_vf_representor.c @@ -139,15 +139,126 @@ i40e_vf_representor_tx_queue_setup(__rte_unused struct rte_eth_dev *dev, return 0; } +static void +i40evf_stat_update_48(uint64_t *offset, + uint64_t *stat) +{ + if (*stat >= *offset) + *stat = *stat - *offset; + else + *stat = (uint64_t)((*stat + + ((uint64_t)1 << I40E_48_BIT_WIDTH)) - *offset); + + *stat &= I40E_48_BIT_MASK; +} + +static void +i40evf_stat_update_32(uint64_t *offset, + uint64_t *stat) +{ + if (*stat >= *offset) + *stat = (uint64_t)(*stat - *offset); + else + *stat = (uint64_t)((*stat + + ((uint64_t)1 << I40E_32_BIT_WIDTH)) - *offset); +} + +static int +rte_pmd_i40e_get_vf_native_stats(uint16_t port, + uint16_t vf_id, + struct i40e_eth_stats *stats) +{ + struct rte_eth_dev *dev; + struct i40e_pf *pf; + struct i40e_vsi *vsi; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV); + + dev = &rte_eth_devices[port]; + + if (!is_i40e_supported(dev)) + return -ENOTSUP; + + pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private); + + if (vf_id >= pf->vf_num || !pf->vfs) { + PMD_DRV_LOG(ERR, "Invalid VF ID."); + return -EINVAL; + } + + vsi = pf->vfs[vf_id].vsi; + if (!vsi) { + PMD_DRV_LOG(ERR, "Invalid VSI."); + return -EINVAL; + } + + i40e_update_vsi_stats(vsi); + memcpy(stats, &vsi->eth_stats, sizeof(vsi->eth_stats)); + + return 0; +} + static int i40e_vf_representor_stats_get(struct rte_eth_dev *ethdev, struct rte_eth_stats *stats) { struct i40e_vf_representor *representor = ethdev->data->dev_private; + struct i40e_eth_stats native_stats; + int ret; - return rte_pmd_i40e_get_vf_stats( + ret = rte_pmd_i40e_get_vf_native_stats( representor->adapter->eth_dev->data->port_id, - representor->vf_id, stats); + representor->vf_id, &native_stats); + if (ret == 0) { + i40evf_stat_update_48( + &representor->stats_offset.rx_bytes, + &native_stats.rx_bytes); + i40evf_stat_update_48( + &representor->stats_offset.rx_unicast, + &native_stats.rx_unicast); + i40evf_stat_update_48( + &representor->stats_offset.rx_multicast, + &native_stats.rx_multicast); + i40evf_stat_update_48( + &representor->stats_offset.rx_broadcast, + &native_stats.rx_broadcast); + i40evf_stat_update_32( + &representor->stats_offset.rx_discards, + &native_stats.rx_discards); + i40evf_stat_update_32( + &representor->stats_offset.rx_unknown_protocol, + &native_stats.rx_unknown_protocol); + i40evf_stat_update_48( + &representor->stats_offset.tx_bytes, + &native_stats.tx_bytes); + i40evf_stat_update_48( + &representor->stats_offset.tx_unicast, + &native_stats.tx_unicast); + i40evf_stat_update_48( + &representor->stats_offset.tx_multicast, + &native_stats.tx_multicast); + i40evf_stat_update_48( + &representor->stats_offset.tx_broadcast, + &native_stats.tx_broadcast); + i40evf_stat_update_32( + &representor->stats_offset.tx_errors, + &native_stats.tx_errors); + i40evf_stat_update_32( + &representor->stats_offset.tx_discards, + &native_stats.tx_discards); + + stats->ipackets = native_stats.rx_unicast + + native_stats.rx_multicast + + native_stats.rx_broadcast; + stats->opackets = native_stats.tx_unicast + + native_stats.tx_multicast + + native_stats.tx_broadcast; + stats->ibytes = native_stats.rx_bytes; + stats->obytes = native_stats.tx_bytes; + stats->ierrors = native_stats.rx_discards; + stats->oerrors = native_stats.tx_errors + native_stats.tx_discards; + } + return ret; } static void @@ -155,9 +266,9 @@ i40e_vf_representor_stats_reset(struct rte_eth_dev *ethdev) { struct i40e_vf_representor *representor = ethdev->data->dev_private; - rte_pmd_i40e_reset_vf_stats( + rte_pmd_i40e_get_vf_native_stats( representor->adapter->eth_dev->data->port_id, - representor->vf_id); + representor->vf_id, &representor->stats_offset); } static void -- 2.9.5