From: Yogev Chaimovich Date: Thu, 20 Sep 2018 06:37:05 +0000 (+0000) Subject: net/vmxnet3: support stats reset X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=30f77abecd38;p=dpdk.git net/vmxnet3: support stats reset 'stats_reset()' callback was missing because the device backend doesn't support it. This commit adds a workaround to this and implements the callback by taking a snapshot of the stats (SNAPSHOT) each time 'stats_reset()' is called. When getting stats with 'stats_get()', hw stats which always increase reduce SNAPSHOT stats. That's how we get the "real" stats since the last 'stats_reset()'. Signed-off-by: Yogev Chaimovich Acked-by: Yong Wang --- diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.c b/drivers/net/vmxnet3/vmxnet3_ethdev.c index f1596ab19d..e41fa499bc 100644 --- a/drivers/net/vmxnet3/vmxnet3_ethdev.c +++ b/drivers/net/vmxnet3/vmxnet3_ethdev.c @@ -77,6 +77,7 @@ static int vmxnet3_dev_link_update(struct rte_eth_dev *dev, static void vmxnet3_hw_stats_save(struct vmxnet3_hw *hw); static int vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats); +static void vmxnet3_dev_stats_reset(struct rte_eth_dev *dev); static int vmxnet3_dev_xstats_get_names(struct rte_eth_dev *dev, struct rte_eth_xstat_name *xstats, unsigned int n); @@ -119,6 +120,7 @@ static const struct eth_dev_ops vmxnet3_eth_dev_ops = { .stats_get = vmxnet3_dev_stats_get, .xstats_get_names = vmxnet3_dev_xstats_get_names, .xstats_get = vmxnet3_dev_xstats_get, + .stats_reset = vmxnet3_dev_stats_reset, .mac_addr_set = vmxnet3_mac_addr_set, .dev_infos_get = vmxnet3_dev_info_get, .dev_supported_ptypes_get = vmxnet3_dev_supported_ptypes_get, @@ -334,6 +336,10 @@ eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev) memset(hw->saved_tx_stats, 0, sizeof(hw->saved_tx_stats)); memset(hw->saved_rx_stats, 0, sizeof(hw->saved_rx_stats)); + /* clear snapshot stats */ + memset(hw->snapshot_tx_stats, 0, sizeof(hw->snapshot_tx_stats)); + memset(hw->snapshot_rx_stats, 0, sizeof(hw->snapshot_rx_stats)); + /* set the initial link status */ memset(&link, 0, sizeof(link)); link.link_duplex = ETH_LINK_FULL_DUPLEX; @@ -889,7 +895,49 @@ vmxnet3_hw_rx_stats_get(struct vmxnet3_hw *hw, unsigned int q, VMXNET3_UPDATE_RX_STAT(hw, q, pktsRxError, res); VMXNET3_UPDATE_RX_STAT(hw, q, pktsRxOutOfBuf, res); -#undef VMXNET3_UPDATE_RX_STATS +#undef VMXNET3_UPDATE_RX_STAT +} + +static void +vmxnet3_tx_stats_get(struct vmxnet3_hw *hw, unsigned int q, + struct UPT1_TxStats *res) +{ + vmxnet3_hw_tx_stats_get(hw, q, res); + +#define VMXNET3_REDUCE_SNAPSHOT_TX_STAT(h, i, f, r) \ + ((r)->f -= (h)->snapshot_tx_stats[(i)].f) + + VMXNET3_REDUCE_SNAPSHOT_TX_STAT(hw, q, ucastPktsTxOK, res); + VMXNET3_REDUCE_SNAPSHOT_TX_STAT(hw, q, mcastPktsTxOK, res); + VMXNET3_REDUCE_SNAPSHOT_TX_STAT(hw, q, bcastPktsTxOK, res); + VMXNET3_REDUCE_SNAPSHOT_TX_STAT(hw, q, ucastBytesTxOK, res); + VMXNET3_REDUCE_SNAPSHOT_TX_STAT(hw, q, mcastBytesTxOK, res); + VMXNET3_REDUCE_SNAPSHOT_TX_STAT(hw, q, bcastBytesTxOK, res); + VMXNET3_REDUCE_SNAPSHOT_TX_STAT(hw, q, pktsTxError, res); + VMXNET3_REDUCE_SNAPSHOT_TX_STAT(hw, q, pktsTxDiscard, res); + +#undef VMXNET3_REDUCE_SNAPSHOT_TX_STAT +} + +static void +vmxnet3_rx_stats_get(struct vmxnet3_hw *hw, unsigned int q, + struct UPT1_RxStats *res) +{ + vmxnet3_hw_rx_stats_get(hw, q, res); + +#define VMXNET3_REDUCE_SNAPSHOT_RX_STAT(h, i, f, r) \ + ((r)->f -= (h)->snapshot_rx_stats[(i)].f) + + VMXNET3_REDUCE_SNAPSHOT_RX_STAT(hw, q, ucastPktsRxOK, res); + VMXNET3_REDUCE_SNAPSHOT_RX_STAT(hw, q, mcastPktsRxOK, res); + VMXNET3_REDUCE_SNAPSHOT_RX_STAT(hw, q, bcastPktsRxOK, res); + VMXNET3_REDUCE_SNAPSHOT_RX_STAT(hw, q, ucastBytesRxOK, res); + VMXNET3_REDUCE_SNAPSHOT_RX_STAT(hw, q, mcastBytesRxOK, res); + VMXNET3_REDUCE_SNAPSHOT_RX_STAT(hw, q, bcastBytesRxOK, res); + VMXNET3_REDUCE_SNAPSHOT_RX_STAT(hw, q, pktsRxError, res); + VMXNET3_REDUCE_SNAPSHOT_RX_STAT(hw, q, pktsRxOutOfBuf, res); + +#undef VMXNET3_REDUCE_SNAPSHOT_RX_STAT } static void @@ -1004,7 +1052,7 @@ vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES); for (i = 0; i < hw->num_tx_queues; i++) { - vmxnet3_hw_tx_stats_get(hw, i, &txStats); + vmxnet3_tx_stats_get(hw, i, &txStats); stats->q_opackets[i] = txStats.ucastPktsTxOK + txStats.mcastPktsTxOK + @@ -1021,7 +1069,7 @@ vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES); for (i = 0; i < hw->num_rx_queues; i++) { - vmxnet3_hw_rx_stats_get(hw, i, &rxStats); + vmxnet3_rx_stats_get(hw, i, &rxStats); stats->q_ipackets[i] = rxStats.ucastPktsRxOK + rxStats.mcastPktsRxOK + @@ -1042,6 +1090,30 @@ vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) return 0; } +static void +vmxnet3_dev_stats_reset(struct rte_eth_dev *dev) +{ + unsigned int i; + struct vmxnet3_hw *hw = dev->data->dev_private; + struct UPT1_TxStats txStats; + struct UPT1_RxStats rxStats; + + VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS); + + RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES); + + for (i = 0; i < hw->num_tx_queues; i++) { + vmxnet3_hw_tx_stats_get(hw, i, &txStats); + memcpy(&hw->snapshot_tx_stats[i], &txStats, + sizeof(hw->snapshot_tx_stats[0])); + } + for (i = 0; i < hw->num_rx_queues; i++) { + vmxnet3_hw_rx_stats_get(hw, i, &rxStats); + memcpy(&hw->snapshot_rx_stats[i], &rxStats, + sizeof(hw->snapshot_rx_stats[0])); + } +} + static void vmxnet3_dev_info_get(struct rte_eth_dev *dev __rte_unused, struct rte_eth_dev_info *dev_info) diff --git a/drivers/net/vmxnet3/vmxnet3_ethdev.h b/drivers/net/vmxnet3/vmxnet3_ethdev.h index d3f2b35292..5bc3a84c9a 100644 --- a/drivers/net/vmxnet3/vmxnet3_ethdev.h +++ b/drivers/net/vmxnet3/vmxnet3_ethdev.h @@ -98,6 +98,9 @@ struct vmxnet3_hw { #define VMXNET3_VFT_TABLE_SIZE (VMXNET3_VFT_SIZE * sizeof(uint32_t)) UPT1_TxStats saved_tx_stats[VMXNET3_MAX_TX_QUEUES]; UPT1_RxStats saved_rx_stats[VMXNET3_MAX_RX_QUEUES]; + + UPT1_TxStats snapshot_tx_stats[VMXNET3_MAX_TX_QUEUES]; + UPT1_RxStats snapshot_rx_stats[VMXNET3_MAX_RX_QUEUES]; }; #define VMXNET3_REV_3 2 /* Vmxnet3 Rev. 3 */