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qede: Add driver support for PTP
This patch adds the driver support for, - Registering the ptp clock functionality with the OS. - Timestamping the Rx/Tx PTP packets. - Ethtool callbacks related to PTP. Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sudarsana Reddy Kalluru
committed by
David S. Miller
David S. Miller
parent
c78c70fa30
commit
4c55215c05
@@ -104,6 +104,7 @@ config QED_SRIOV
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config QEDE
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tristate "QLogic QED 25/40/100Gb Ethernet NIC"
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depends on QED
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imply PTP_1588_CLOCK
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---help---
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This enables the support for ...
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@@ -1,5 +1,5 @@
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obj-$(CONFIG_QEDE) := qede.o
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qede-y := qede_main.o qede_fp.o qede_filter.o qede_ethtool.o
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qede-y := qede_main.o qede_fp.o qede_filter.o qede_ethtool.o qede_ptp.o
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qede-$(CONFIG_DCB) += qede_dcbnl.o
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qede-$(CONFIG_QED_RDMA) += qede_roce.o
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@@ -137,6 +137,8 @@ struct qede_rdma_dev {
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struct workqueue_struct *roce_wq;
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};
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struct qede_ptp;
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struct qede_dev {
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struct qed_dev *cdev;
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struct net_device *ndev;
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@@ -148,8 +150,10 @@ struct qede_dev {
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u32 flags;
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#define QEDE_FLAG_IS_VF BIT(0)
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#define IS_VF(edev) (!!((edev)->flags & QEDE_FLAG_IS_VF))
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#define QEDE_TX_TIMESTAMPING_EN BIT(1)
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const struct qed_eth_ops *ops;
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struct qede_ptp *ptp;
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struct qed_dev_eth_info dev_info;
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#define QEDE_MAX_RSS_CNT(edev) ((edev)->dev_info.num_queues)
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@@ -39,6 +39,7 @@
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#include <linux/capability.h>
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#include <linux/vmalloc.h>
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#include "qede.h"
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#include "qede_ptp.h"
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#define QEDE_RQSTAT_OFFSET(stat_name) \
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(offsetof(struct qede_rx_queue, stat_name))
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@@ -940,6 +941,14 @@ static int qede_set_channels(struct net_device *dev,
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return 0;
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}
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static int qede_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 qede_dev *edev = netdev_priv(dev);
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return qede_ptp_get_ts_info(edev, info);
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}
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static int qede_set_phys_id(struct net_device *dev,
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enum ethtool_phys_id_state state)
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{
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@@ -1586,6 +1595,7 @@ static const struct ethtool_ops qede_ethtool_ops = {
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.get_rxfh_key_size = qede_get_rxfh_key_size,
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.get_rxfh = qede_get_rxfh,
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.set_rxfh = qede_set_rxfh,
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.get_ts_info = qede_get_ts_info,
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.get_channels = qede_get_channels,
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.set_channels = qede_set_channels,
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.self_test = qede_self_test,
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@@ -40,6 +40,7 @@
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <net/ip6_checksum.h>
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#include "qede_ptp.h"
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#include <linux/qed/qed_if.h>
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#include "qede.h"
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@@ -1277,6 +1278,7 @@ static int qede_rx_process_cqe(struct qede_dev *edev,
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qede_get_rxhash(skb, fp_cqe->bitfields, fp_cqe->rss_hash);
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qede_set_skb_csum(skb, csum_flag);
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skb_record_rx_queue(skb, rxq->rxq_id);
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qede_ptp_record_rx_ts(edev, cqe, skb);
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/* SKB is prepared - pass it to stack */
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qede_skb_receive(edev, fp, rxq, skb, le16_to_cpu(fp_cqe->vlan_tag));
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@@ -1451,6 +1453,9 @@ netdev_tx_t qede_start_xmit(struct sk_buff *skb, struct net_device *ndev)
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first_bd->data.bd_flags.bitfields =
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1 << ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT;
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if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
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qede_ptp_tx_ts(edev, skb);
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/* Map skb linear data for DMA and set in the first BD */
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mapping = dma_map_single(txq->dev, skb->data,
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skb_headlen(skb), DMA_TO_DEVICE);
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@@ -62,6 +62,7 @@
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#include <linux/vmalloc.h>
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#include <linux/qed/qede_roce.h>
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#include "qede.h"
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#include "qede_ptp.h"
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static char version[] =
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"QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
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@@ -484,6 +485,25 @@ static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting)
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}
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#endif
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static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
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{
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struct qede_dev *edev = netdev_priv(dev);
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if (!netif_running(dev))
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return -EAGAIN;
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switch (cmd) {
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case SIOCSHWTSTAMP:
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return qede_ptp_hw_ts(edev, ifr);
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default:
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DP_VERBOSE(edev, QED_MSG_DEBUG,
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"default IOCTL cmd 0x%x\n", cmd);
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static const struct net_device_ops qede_netdev_ops = {
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.ndo_open = qede_open,
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.ndo_stop = qede_close,
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@@ -492,6 +512,7 @@ static const struct net_device_ops qede_netdev_ops = {
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.ndo_set_mac_address = qede_set_mac_addr,
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.ndo_validate_addr = eth_validate_addr,
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.ndo_change_mtu = qede_change_mtu,
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.ndo_do_ioctl = qede_ioctl,
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#ifdef CONFIG_QED_SRIOV
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.ndo_set_vf_mac = qede_set_vf_mac,
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.ndo_set_vf_vlan = qede_set_vf_vlan,
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@@ -841,6 +862,15 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
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edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
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/* PTP not supported on VFs */
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if (!is_vf) {
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rc = qede_ptp_register_phc(edev);
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if (rc) {
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DP_NOTICE(edev, "Cannot register PHC\n");
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goto err5;
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}
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}
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edev->ops->register_ops(cdev, &qede_ll_ops, edev);
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#ifdef CONFIG_DCB
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@@ -856,6 +886,8 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
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return 0;
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err5:
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unregister_netdev(edev->ndev);
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err4:
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qede_roce_dev_remove(edev);
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err3:
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@@ -907,6 +939,8 @@ static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
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unregister_netdev(ndev);
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qede_ptp_remove(edev);
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qede_roce_dev_remove(edev);
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edev->ops->common->set_power_state(cdev, PCI_D0);
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@@ -1660,6 +1694,7 @@ static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
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if (!vport_update_params)
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return -ENOMEM;
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start.handle_ptp_pkts = !!(edev->ptp);
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start.gro_enable = !edev->gro_disable;
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start.mtu = edev->ndev->mtu;
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start.vport_id = 0;
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@@ -1781,6 +1816,8 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
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qede_roce_dev_event_close(edev);
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edev->state = QEDE_STATE_CLOSED;
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qede_ptp_stop(edev);
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/* Close OS Tx */
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netif_tx_disable(edev->ndev);
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netif_carrier_off(edev->ndev);
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@@ -1882,6 +1919,8 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
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qede_roce_dev_event_open(edev);
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qede_link_update(edev, &link_output);
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qede_ptp_start(edev, (mode == QEDE_LOAD_NORMAL));
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edev->state = QEDE_STATE_OPEN;
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DP_INFO(edev, "Ending successfully qede load\n");
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,65 @@
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/* QLogic qede NIC Driver
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* Copyright (c) 2015-2017 QLogic Corporation
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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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#ifndef _QEDE_PTP_H_
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#define _QEDE_PTP_H_
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#include <linux/ptp_clock_kernel.h>
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#include <linux/net_tstamp.h>
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#include <linux/timecounter.h>
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#include "qede.h"
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void qede_ptp_rx_ts(struct qede_dev *edev, struct sk_buff *skb);
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void qede_ptp_tx_ts(struct qede_dev *edev, struct sk_buff *skb);
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int qede_ptp_hw_ts(struct qede_dev *edev, struct ifreq *req);
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void qede_ptp_start(struct qede_dev *edev, bool init_tc);
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void qede_ptp_stop(struct qede_dev *edev);
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void qede_ptp_remove(struct qede_dev *edev);
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int qede_ptp_register_phc(struct qede_dev *edev);
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int qede_ptp_get_ts_info(struct qede_dev *edev, struct ethtool_ts_info *ts);
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static inline void qede_ptp_record_rx_ts(struct qede_dev *edev,
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union eth_rx_cqe *cqe,
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struct sk_buff *skb)
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{
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/* Check if this packet was timestamped */
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if (unlikely(le16_to_cpu(cqe->fast_path_regular.pars_flags.flags) &
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(1 << PARSING_AND_ERR_FLAGS_TIMESTAMPRECORDED_SHIFT))) {
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if (likely(le16_to_cpu(cqe->fast_path_regular.pars_flags.flags)
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& (1 << PARSING_AND_ERR_FLAGS_TIMESYNCPKT_SHIFT))) {
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qede_ptp_rx_ts(edev, skb);
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} else {
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DP_INFO(edev,
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"Timestamp recorded for non PTP packets\n");
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}
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}
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}
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#endif /* _QEDE_PTP_H_ */
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