mirror of https://gitee.com/openkylin/linux.git
net/mlx5e: Add HW timestamping (TS) support
Add support for enable/disable HW timestamping for incoming and/or outgoing packets. To enable/disable HW timestamping appropriate ioctl should be used. Currently HWTSTAMP_FILTER_ALL/NONE and HWTSAMP_TX_ON/OFF only are supported. Make all relevant changes in RX/TX flows to consider TS request and plant HW timestamps into relevant structures. Add internal clock for converting hardware timestamp to nanoseconds. In addition, add a service task to catch internal clock overflow, to make sure timestamping is accurate. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
b084444459
commit
ef9814deaf
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@ -5,4 +5,4 @@ mlx5_core-y := main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
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mad.o transobj.o vport.o sriov.o fs_cmd.o fs_core.o
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mad.o transobj.o vport.o sriov.o fs_cmd.o fs_core.o
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mlx5_core-$(CONFIG_MLX5_CORE_EN) += wq.o eswitch.o \
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mlx5_core-$(CONFIG_MLX5_CORE_EN) += wq.o eswitch.o \
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en_main.o en_fs.o en_ethtool.o en_tx.o en_rx.o \
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en_main.o en_fs.o en_ethtool.o en_tx.o en_rx.o \
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en_txrx.o
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en_txrx.o en_clock.o
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@ -32,6 +32,8 @@
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#include <linux/if_vlan.h>
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#include <linux/if_vlan.h>
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#include <linux/etherdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/timecounter.h>
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#include <linux/net_tstamp.h>
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#include <linux/mlx5/driver.h>
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#include <linux/mlx5/driver.h>
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#include <linux/mlx5/qp.h>
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#include <linux/mlx5/qp.h>
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#include <linux/mlx5/cq.h>
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#include <linux/mlx5/cq.h>
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@ -284,6 +286,17 @@ struct mlx5e_params {
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u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE];
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u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE];
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};
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};
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struct mlx5e_tstamp {
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rwlock_t lock;
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struct cyclecounter cycles;
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struct timecounter clock;
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struct hwtstamp_config hwtstamp_config;
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u32 nominal_c_mult;
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unsigned long overflow_period;
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struct delayed_work overflow_work;
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struct mlx5_core_dev *mdev;
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};
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enum {
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enum {
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MLX5E_RQ_STATE_POST_WQES_ENABLE,
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MLX5E_RQ_STATE_POST_WQES_ENABLE,
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};
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};
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@ -315,6 +328,7 @@ struct mlx5e_rq {
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struct device *pdev;
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struct device *pdev;
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struct net_device *netdev;
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struct net_device *netdev;
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struct mlx5e_tstamp *tstamp;
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struct mlx5e_rq_stats stats;
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struct mlx5e_rq_stats stats;
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struct mlx5e_cq cq;
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struct mlx5e_cq cq;
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@ -382,6 +396,7 @@ struct mlx5e_sq {
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u16 max_inline;
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u16 max_inline;
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u16 edge;
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u16 edge;
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struct device *pdev;
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struct device *pdev;
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struct mlx5e_tstamp *tstamp;
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__be32 mkey_be;
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__be32 mkey_be;
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unsigned long state;
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unsigned long state;
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@ -518,6 +533,7 @@ struct mlx5e_priv {
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struct mlx5_core_dev *mdev;
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struct mlx5_core_dev *mdev;
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struct net_device *netdev;
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struct net_device *netdev;
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struct mlx5e_stats stats;
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struct mlx5e_stats stats;
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struct mlx5e_tstamp tstamp;
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};
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};
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#define MLX5E_NET_IP_ALIGN 2
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#define MLX5E_NET_IP_ALIGN 2
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@ -584,6 +600,13 @@ void mlx5e_destroy_flow_tables(struct mlx5e_priv *priv);
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void mlx5e_init_eth_addr(struct mlx5e_priv *priv);
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void mlx5e_init_eth_addr(struct mlx5e_priv *priv);
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void mlx5e_set_rx_mode_work(struct work_struct *work);
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void mlx5e_set_rx_mode_work(struct work_struct *work);
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void mlx5e_fill_hwstamp(struct mlx5e_tstamp *clock, u64 timestamp,
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struct skb_shared_hwtstamps *hwts);
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void mlx5e_timestamp_init(struct mlx5e_priv *priv);
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void mlx5e_timestamp_cleanup(struct mlx5e_priv *priv);
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int mlx5e_hwstamp_set(struct net_device *dev, struct ifreq *ifr);
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int mlx5e_hwstamp_get(struct net_device *dev, struct ifreq *ifr);
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int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
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int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
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u16 vid);
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u16 vid);
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int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
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int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
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@ -0,0 +1,187 @@
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/*
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* Copyright (c) 2015, Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/clocksource.h>
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#include "en.h"
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enum {
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MLX5E_CYCLES_SHIFT = 23
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};
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void mlx5e_fill_hwstamp(struct mlx5e_tstamp *tstamp, u64 timestamp,
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struct skb_shared_hwtstamps *hwts)
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{
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u64 nsec;
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read_lock(&tstamp->lock);
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nsec = timecounter_cyc2time(&tstamp->clock, timestamp);
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read_unlock(&tstamp->lock);
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hwts->hwtstamp = ns_to_ktime(nsec);
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}
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static cycle_t mlx5e_read_internal_timer(const struct cyclecounter *cc)
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{
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struct mlx5e_tstamp *tstamp = container_of(cc, struct mlx5e_tstamp,
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cycles);
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return mlx5_read_internal_timer(tstamp->mdev) & cc->mask;
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}
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static void mlx5e_timestamp_overflow(struct work_struct *work)
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{
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struct delayed_work *dwork = to_delayed_work(work);
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struct mlx5e_tstamp *tstamp = container_of(dwork, struct mlx5e_tstamp,
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overflow_work);
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write_lock(&tstamp->lock);
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timecounter_read(&tstamp->clock);
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write_unlock(&tstamp->lock);
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schedule_delayed_work(&tstamp->overflow_work, tstamp->overflow_period);
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}
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int mlx5e_hwstamp_set(struct net_device *dev, struct ifreq *ifr)
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{
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struct mlx5e_priv *priv = netdev_priv(dev);
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struct hwtstamp_config config;
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if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz))
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return -EOPNOTSUPP;
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if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
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return -EFAULT;
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/* TX HW timestamp */
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switch (config.tx_type) {
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case HWTSTAMP_TX_OFF:
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case HWTSTAMP_TX_ON:
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break;
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default:
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return -ERANGE;
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}
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/* RX HW timestamp */
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switch (config.rx_filter) {
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case HWTSTAMP_FILTER_NONE:
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break;
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case HWTSTAMP_FILTER_ALL:
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case HWTSTAMP_FILTER_SOME:
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case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
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case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
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case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
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case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
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case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
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case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
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case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
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case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
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case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
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case HWTSTAMP_FILTER_PTP_V2_EVENT:
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case HWTSTAMP_FILTER_PTP_V2_SYNC:
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case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
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config.rx_filter = HWTSTAMP_FILTER_ALL;
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break;
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default:
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return -ERANGE;
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}
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memcpy(&priv->tstamp.hwtstamp_config, &config, sizeof(config));
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return copy_to_user(ifr->ifr_data, &config,
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sizeof(config)) ? -EFAULT : 0;
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}
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int mlx5e_hwstamp_get(struct net_device *dev, struct ifreq *ifr)
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{
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struct mlx5e_priv *priv = netdev_priv(dev);
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struct hwtstamp_config *cfg = &priv->tstamp.hwtstamp_config;
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if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz))
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return -EOPNOTSUPP;
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return copy_to_user(ifr->ifr_data, cfg, sizeof(*cfg)) ? -EFAULT : 0;
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}
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static void mlx5e_timestamp_init_config(struct mlx5e_tstamp *tstamp)
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{
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tstamp->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
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tstamp->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
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}
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void mlx5e_timestamp_init(struct mlx5e_priv *priv)
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{
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struct mlx5e_tstamp *tstamp = &priv->tstamp;
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u64 ns;
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u64 frac = 0;
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u32 dev_freq;
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mlx5e_timestamp_init_config(tstamp);
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dev_freq = MLX5_CAP_GEN(priv->mdev, device_frequency_khz);
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if (!dev_freq) {
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mlx5_core_warn(priv->mdev, "invalid device_frequency_khz, aborting HW clock init\n");
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return;
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}
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rwlock_init(&tstamp->lock);
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tstamp->cycles.read = mlx5e_read_internal_timer;
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tstamp->cycles.shift = MLX5E_CYCLES_SHIFT;
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tstamp->cycles.mult = clocksource_khz2mult(dev_freq,
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tstamp->cycles.shift);
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tstamp->nominal_c_mult = tstamp->cycles.mult;
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tstamp->cycles.mask = CLOCKSOURCE_MASK(41);
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tstamp->mdev = priv->mdev;
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timecounter_init(&tstamp->clock, &tstamp->cycles,
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ktime_to_ns(ktime_get_real()));
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/* Calculate period in seconds to call the overflow watchdog - to make
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* sure counter is checked at least once every wrap around.
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*/
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ns = cyclecounter_cyc2ns(&tstamp->cycles, tstamp->cycles.mask,
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frac, &frac);
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do_div(ns, NSEC_PER_SEC / 2 / HZ);
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tstamp->overflow_period = ns;
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INIT_DELAYED_WORK(&tstamp->overflow_work, mlx5e_timestamp_overflow);
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if (tstamp->overflow_period)
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schedule_delayed_work(&tstamp->overflow_work, 0);
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else
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mlx5_core_warn(priv->mdev, "invalid overflow period, overflow_work is not scheduled\n");
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}
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void mlx5e_timestamp_cleanup(struct mlx5e_priv *priv)
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{
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struct mlx5e_tstamp *tstamp = &priv->tstamp;
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if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz))
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return;
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cancel_delayed_work_sync(&tstamp->overflow_work);
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}
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@ -855,6 +855,34 @@ static int mlx5e_set_pauseparam(struct net_device *netdev,
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return err;
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return err;
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}
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}
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static int mlx5e_get_ts_info(struct net_device *dev,
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struct ethtool_ts_info *info)
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{
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struct mlx5e_priv *priv = netdev_priv(dev);
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int ret;
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ret = ethtool_op_get_ts_info(dev, info);
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if (ret)
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return ret;
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info->phc_index = -1;
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if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz))
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return 0;
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info->so_timestamping |= SOF_TIMESTAMPING_TX_HARDWARE |
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SOF_TIMESTAMPING_RX_HARDWARE |
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SOF_TIMESTAMPING_RAW_HARDWARE;
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info->tx_types = (BIT(1) << HWTSTAMP_TX_OFF) |
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(BIT(1) << HWTSTAMP_TX_ON);
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info->rx_filters = (BIT(1) << HWTSTAMP_FILTER_NONE) |
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(BIT(1) << HWTSTAMP_FILTER_ALL);
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return 0;
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}
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const struct ethtool_ops mlx5e_ethtool_ops = {
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const struct ethtool_ops mlx5e_ethtool_ops = {
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.get_drvinfo = mlx5e_get_drvinfo,
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.get_drvinfo = mlx5e_get_drvinfo,
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.get_link = ethtool_op_get_link,
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.get_link = ethtool_op_get_link,
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@ -878,4 +906,5 @@ const struct ethtool_ops mlx5e_ethtool_ops = {
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.set_tunable = mlx5e_set_tunable,
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.set_tunable = mlx5e_set_tunable,
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.get_pauseparam = mlx5e_get_pauseparam,
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.get_pauseparam = mlx5e_get_pauseparam,
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.set_pauseparam = mlx5e_set_pauseparam,
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.set_pauseparam = mlx5e_set_pauseparam,
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.get_ts_info = mlx5e_get_ts_info,
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};
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};
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@ -351,6 +351,7 @@ static int mlx5e_create_rq(struct mlx5e_channel *c,
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rq->pdev = c->pdev;
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rq->pdev = c->pdev;
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rq->netdev = c->netdev;
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rq->netdev = c->netdev;
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rq->tstamp = &priv->tstamp;
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rq->channel = c;
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rq->channel = c;
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rq->ix = c->ix;
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rq->ix = c->ix;
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rq->priv = c->priv;
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rq->priv = c->priv;
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@ -571,6 +572,7 @@ static int mlx5e_create_sq(struct mlx5e_channel *c,
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sq->txq = netdev_get_tx_queue(priv->netdev, txq_ix);
|
sq->txq = netdev_get_tx_queue(priv->netdev, txq_ix);
|
||||||
|
|
||||||
sq->pdev = c->pdev;
|
sq->pdev = c->pdev;
|
||||||
|
sq->tstamp = &priv->tstamp;
|
||||||
sq->mkey_be = c->mkey_be;
|
sq->mkey_be = c->mkey_be;
|
||||||
sq->channel = c;
|
sq->channel = c;
|
||||||
sq->tc = tc;
|
sq->tc = tc;
|
||||||
|
@ -1430,6 +1432,7 @@ int mlx5e_open_locked(struct net_device *netdev)
|
||||||
|
|
||||||
mlx5e_update_carrier(priv);
|
mlx5e_update_carrier(priv);
|
||||||
mlx5e_redirect_rqts(priv);
|
mlx5e_redirect_rqts(priv);
|
||||||
|
mlx5e_timestamp_init(priv);
|
||||||
|
|
||||||
schedule_delayed_work(&priv->update_stats_work, 0);
|
schedule_delayed_work(&priv->update_stats_work, 0);
|
||||||
|
|
||||||
|
@ -1466,6 +1469,7 @@ int mlx5e_close_locked(struct net_device *netdev)
|
||||||
|
|
||||||
clear_bit(MLX5E_STATE_OPENED, &priv->state);
|
clear_bit(MLX5E_STATE_OPENED, &priv->state);
|
||||||
|
|
||||||
|
mlx5e_timestamp_cleanup(priv);
|
||||||
mlx5e_redirect_rqts(priv);
|
mlx5e_redirect_rqts(priv);
|
||||||
netif_carrier_off(priv->netdev);
|
netif_carrier_off(priv->netdev);
|
||||||
mlx5e_close_channels(priv);
|
mlx5e_close_channels(priv);
|
||||||
|
@ -1935,6 +1939,18 @@ static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu)
|
||||||
return err;
|
return err;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static int mlx5e_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
||||||
|
{
|
||||||
|
switch (cmd) {
|
||||||
|
case SIOCSHWTSTAMP:
|
||||||
|
return mlx5e_hwstamp_set(dev, ifr);
|
||||||
|
case SIOCGHWTSTAMP:
|
||||||
|
return mlx5e_hwstamp_get(dev, ifr);
|
||||||
|
default:
|
||||||
|
return -EOPNOTSUPP;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
static int mlx5e_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
|
static int mlx5e_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
|
||||||
{
|
{
|
||||||
struct mlx5e_priv *priv = netdev_priv(dev);
|
struct mlx5e_priv *priv = netdev_priv(dev);
|
||||||
|
@ -2018,7 +2034,8 @@ static struct net_device_ops mlx5e_netdev_ops = {
|
||||||
.ndo_vlan_rx_add_vid = mlx5e_vlan_rx_add_vid,
|
.ndo_vlan_rx_add_vid = mlx5e_vlan_rx_add_vid,
|
||||||
.ndo_vlan_rx_kill_vid = mlx5e_vlan_rx_kill_vid,
|
.ndo_vlan_rx_kill_vid = mlx5e_vlan_rx_kill_vid,
|
||||||
.ndo_set_features = mlx5e_set_features,
|
.ndo_set_features = mlx5e_set_features,
|
||||||
.ndo_change_mtu = mlx5e_change_mtu
|
.ndo_change_mtu = mlx5e_change_mtu,
|
||||||
|
.ndo_do_ioctl = mlx5e_ioctl,
|
||||||
};
|
};
|
||||||
|
|
||||||
static int mlx5e_check_required_hca_cap(struct mlx5_core_dev *mdev)
|
static int mlx5e_check_required_hca_cap(struct mlx5_core_dev *mdev)
|
||||||
|
|
|
@ -36,6 +36,11 @@
|
||||||
#include <net/busy_poll.h>
|
#include <net/busy_poll.h>
|
||||||
#include "en.h"
|
#include "en.h"
|
||||||
|
|
||||||
|
static inline bool mlx5e_rx_hw_stamp(struct mlx5e_tstamp *tstamp)
|
||||||
|
{
|
||||||
|
return tstamp->hwtstamp_config.rx_filter == HWTSTAMP_FILTER_ALL;
|
||||||
|
}
|
||||||
|
|
||||||
static inline int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq,
|
static inline int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq,
|
||||||
struct mlx5e_rx_wqe *wqe, u16 ix)
|
struct mlx5e_rx_wqe *wqe, u16 ix)
|
||||||
{
|
{
|
||||||
|
@ -190,6 +195,7 @@ static inline void mlx5e_build_rx_skb(struct mlx5_cqe64 *cqe,
|
||||||
{
|
{
|
||||||
struct net_device *netdev = rq->netdev;
|
struct net_device *netdev = rq->netdev;
|
||||||
u32 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
|
u32 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
|
||||||
|
struct mlx5e_tstamp *tstamp = rq->tstamp;
|
||||||
int lro_num_seg;
|
int lro_num_seg;
|
||||||
|
|
||||||
skb_put(skb, cqe_bcnt);
|
skb_put(skb, cqe_bcnt);
|
||||||
|
@ -202,6 +208,9 @@ static inline void mlx5e_build_rx_skb(struct mlx5_cqe64 *cqe,
|
||||||
rq->stats.lro_bytes += cqe_bcnt;
|
rq->stats.lro_bytes += cqe_bcnt;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if (unlikely(mlx5e_rx_hw_stamp(tstamp)))
|
||||||
|
mlx5e_fill_hwstamp(tstamp, get_cqe_ts(cqe), skb_hwtstamps(skb));
|
||||||
|
|
||||||
mlx5e_handle_csum(netdev, cqe, rq, skb);
|
mlx5e_handle_csum(netdev, cqe, rq, skb);
|
||||||
|
|
||||||
skb->protocol = eth_type_trans(skb, netdev);
|
skb->protocol = eth_type_trans(skb, netdev);
|
||||||
|
|
|
@ -282,6 +282,9 @@ static netdev_tx_t mlx5e_sq_xmit(struct mlx5e_sq *sq, struct sk_buff *skb)
|
||||||
|
|
||||||
netdev_tx_sent_queue(sq->txq, wi->num_bytes);
|
netdev_tx_sent_queue(sq->txq, wi->num_bytes);
|
||||||
|
|
||||||
|
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
|
||||||
|
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
|
||||||
|
|
||||||
if (unlikely(!mlx5e_sq_has_room_for(sq, MLX5E_SQ_STOP_ROOM))) {
|
if (unlikely(!mlx5e_sq_has_room_for(sq, MLX5E_SQ_STOP_ROOM))) {
|
||||||
netif_tx_stop_queue(sq->txq);
|
netif_tx_stop_queue(sq->txq);
|
||||||
sq->stats.stopped++;
|
sq->stats.stopped++;
|
||||||
|
@ -380,6 +383,15 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq)
|
||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if (unlikely(skb_shinfo(skb)->tx_flags &
|
||||||
|
SKBTX_HW_TSTAMP)) {
|
||||||
|
struct skb_shared_hwtstamps hwts = {};
|
||||||
|
|
||||||
|
mlx5e_fill_hwstamp(sq->tstamp,
|
||||||
|
get_cqe_ts(cqe), &hwts);
|
||||||
|
skb_tstamp_tx(skb, &hwts);
|
||||||
|
}
|
||||||
|
|
||||||
for (j = 0; j < wi->num_dma; j++) {
|
for (j = 0; j < wi->num_dma; j++) {
|
||||||
struct mlx5e_sq_dma *dma =
|
struct mlx5e_sq_dma *dma =
|
||||||
mlx5e_dma_get(sq, dma_fifo_cc++);
|
mlx5e_dma_get(sq, dma_fifo_cc++);
|
||||||
|
|
Loading…
Reference in New Issue