diff options
author | Jakub Kicinski <kuba@kernel.org> | 2023-08-03 05:11:08 +0300 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2023-08-03 05:11:09 +0300 |
commit | b23ec2bd7b847aa8e453d8bb5f62d31176b535f3 (patch) | |
tree | 50922037e9cae3202cbc702a297f0d2bc2ad12f3 | |
parent | 72c1a28473fb132f08a2a447dd1425a472696cd9 (diff) | |
parent | fd770e856e226f80fe6e1dc9d1861bcb135cdf0b (diff) | |
download | linux-b23ec2bd7b847aa8e453d8bb5f62d31176b535f3.tar.xz |
Merge branch 'introduce-ndo_hwtstamp_get-and-ndo_hwtstamp_set'
Vladimir Oltean says:
====================
Introduce ndo_hwtstamp_get() and ndo_hwtstamp_set()
Based on previous RFCs from Maxim Georgiev:
https://lore.kernel.org/netdev/20230502043150.17097-1-glipus@gmail.com/
this series attempts to introduce new API for the hardware timestamping
control path (SIOCGHWTSTAMP and SIOCSHWTSTAMP handling).
I don't have any board with phylib hardware timestamping, so I would
appreciate testing (especially on lan966x, the most intricate
conversion). I was, however, able to test netdev level timestamping,
because I also have some more unsubmitted conversions in progress:
https://github.com/vladimiroltean/linux/commits/ndo-hwtstamp-v9
I hope that the concerns expressed in the comments of previous series
were addressed, and that Köry Maincent's series:
https://lore.kernel.org/netdev/20230406173308.401924-1-kory.maincent@bootlin.com/
can make progress in parallel with the conversion of the rest of drivers.
====================
Link: https://lore.kernel.org/r/20230801142824.1772134-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 files changed, 630 insertions, 209 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index c4f95a9d03b9..069e176d607a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7752,6 +7752,7 @@ F: include/linux/mii.h F: include/linux/of_net.h F: include/linux/phy.h F: include/linux/phy_fixed.h +F: include/linux/phylib_stubs.h F: include/linux/platform_data/mdio-bcm-unimac.h F: include/linux/platform_data/mdio-gpio.h F: include/trace/events/mdio.h diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 484c9e3e5e82..f04d4f28eb1a 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4446,11 +4446,6 @@ static int bond_eth_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cm { struct bonding *bond = netdev_priv(bond_dev); struct mii_ioctl_data *mii = NULL; - const struct net_device_ops *ops; - struct net_device *real_dev; - struct hwtstamp_config cfg; - struct ifreq ifrr; - int res = 0; netdev_dbg(bond_dev, "bond_eth_ioctl: cmd=%d\n", cmd); @@ -4477,44 +4472,11 @@ static int bond_eth_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cm } break; - case SIOCSHWTSTAMP: - if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) - return -EFAULT; - - if (!(cfg.flags & HWTSTAMP_FLAG_BONDED_PHC_INDEX)) - return -EOPNOTSUPP; - - fallthrough; - case SIOCGHWTSTAMP: - real_dev = bond_option_active_slave_get_rcu(bond); - if (!real_dev) - return -EOPNOTSUPP; - - strscpy_pad(ifrr.ifr_name, real_dev->name, IFNAMSIZ); - ifrr.ifr_ifru = ifr->ifr_ifru; - - ops = real_dev->netdev_ops; - if (netif_device_present(real_dev) && ops->ndo_eth_ioctl) { - res = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd); - if (res) - return res; - - ifr->ifr_ifru = ifrr.ifr_ifru; - if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) - return -EFAULT; - - /* Set the BOND_PHC_INDEX flag to notify user space */ - cfg.flags |= HWTSTAMP_FLAG_BONDED_PHC_INDEX; - - return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? - -EFAULT : 0; - } - fallthrough; default: - res = -EOPNOTSUPP; + return -EOPNOTSUPP; } - return res; + return 0; } static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd) @@ -5688,6 +5650,67 @@ static u32 bond_mode_bcast_speed(struct slave *slave, u32 speed) return speed; } +/* Set the BOND_PHC_INDEX flag to notify user space */ +static int bond_set_phc_index_flag(struct kernel_hwtstamp_config *kernel_cfg) +{ + struct ifreq *ifr = kernel_cfg->ifr; + struct hwtstamp_config cfg; + + if (kernel_cfg->copied_to_user) { + /* Lower device has a legacy implementation */ + if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) + return -EFAULT; + + cfg.flags |= HWTSTAMP_FLAG_BONDED_PHC_INDEX; + if (copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg))) + return -EFAULT; + } else { + kernel_cfg->flags |= HWTSTAMP_FLAG_BONDED_PHC_INDEX; + } + + return 0; +} + +static int bond_hwtstamp_get(struct net_device *dev, + struct kernel_hwtstamp_config *cfg) +{ + struct bonding *bond = netdev_priv(dev); + struct net_device *real_dev; + int err; + + real_dev = bond_option_active_slave_get_rcu(bond); + if (!real_dev) + return -EOPNOTSUPP; + + err = generic_hwtstamp_get_lower(real_dev, cfg); + if (err) + return err; + + return bond_set_phc_index_flag(cfg); +} + +static int bond_hwtstamp_set(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) +{ + struct bonding *bond = netdev_priv(dev); + struct net_device *real_dev; + int err; + + if (!(cfg->flags & HWTSTAMP_FLAG_BONDED_PHC_INDEX)) + return -EOPNOTSUPP; + + real_dev = bond_option_active_slave_get_rcu(bond); + if (!real_dev) + return -EOPNOTSUPP; + + err = generic_hwtstamp_set_lower(real_dev, cfg, extack); + if (err) + return err; + + return bond_set_phc_index_flag(cfg); +} + static int bond_ethtool_get_link_ksettings(struct net_device *bond_dev, struct ethtool_link_ksettings *cmd) { @@ -5836,6 +5859,8 @@ static const struct net_device_ops bond_netdev_ops = { .ndo_bpf = bond_xdp, .ndo_xdp_xmit = bond_xdp_xmit, .ndo_xdp_get_xmit_slave = bond_xdp_get_xmit_slave, + .ndo_hwtstamp_get = bond_hwtstamp_get, + .ndo_hwtstamp_set = bond_hwtstamp_set, }; static const struct device_type bond_type = { diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index 8f1edcca96c4..110f2e9f3e3f 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -698,9 +698,9 @@ struct fec_enet_private { void fec_ptp_init(struct platform_device *pdev, int irq_idx); void fec_ptp_stop(struct platform_device *pdev); void fec_ptp_start_cyclecounter(struct net_device *ndev); -void fec_ptp_disable_hwts(struct net_device *ndev); -int fec_ptp_set(struct net_device *ndev, struct ifreq *ifr); -int fec_ptp_get(struct net_device *ndev, struct ifreq *ifr); +int fec_ptp_set(struct net_device *ndev, struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack); +void fec_ptp_get(struct net_device *ndev, struct kernel_hwtstamp_config *config); /****************************************************************************/ #endif /* FEC_H */ diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 14d0dc7ba3c9..43f14cec91e9 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -3203,33 +3203,6 @@ static const struct ethtool_ops fec_enet_ethtool_ops = { .self_test = net_selftest, }; -static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) -{ - struct fec_enet_private *fep = netdev_priv(ndev); - struct phy_device *phydev = ndev->phydev; - - if (!netif_running(ndev)) - return -EINVAL; - - if (!phydev) - return -ENODEV; - - if (fep->bufdesc_ex) { - bool use_fec_hwts = !phy_has_hwtstamp(phydev); - - if (cmd == SIOCSHWTSTAMP) { - if (use_fec_hwts) - return fec_ptp_set(ndev, rq); - fec_ptp_disable_hwts(ndev); - } else if (cmd == SIOCGHWTSTAMP) { - if (use_fec_hwts) - return fec_ptp_get(ndev, rq); - } - } - - return phy_mii_ioctl(phydev, rq, cmd); -} - static void fec_enet_free_buffers(struct net_device *ndev) { struct fec_enet_private *fep = netdev_priv(ndev); @@ -3895,6 +3868,37 @@ static int fec_enet_xdp_xmit(struct net_device *dev, return sent_frames; } +static int fec_hwtstamp_get(struct net_device *ndev, + struct kernel_hwtstamp_config *config) +{ + struct fec_enet_private *fep = netdev_priv(ndev); + + if (!netif_running(ndev)) + return -EINVAL; + + if (!fep->bufdesc_ex) + return -EOPNOTSUPP; + + fec_ptp_get(ndev, config); + + return 0; +} + +static int fec_hwtstamp_set(struct net_device *ndev, + struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack) +{ + struct fec_enet_private *fep = netdev_priv(ndev); + + if (!netif_running(ndev)) + return -EINVAL; + + if (!fep->bufdesc_ex) + return -EOPNOTSUPP; + + return fec_ptp_set(ndev, config, extack); +} + static const struct net_device_ops fec_netdev_ops = { .ndo_open = fec_enet_open, .ndo_stop = fec_enet_close, @@ -3904,13 +3908,15 @@ static const struct net_device_ops fec_netdev_ops = { .ndo_validate_addr = eth_validate_addr, .ndo_tx_timeout = fec_timeout, .ndo_set_mac_address = fec_set_mac_address, - .ndo_eth_ioctl = fec_enet_ioctl, + .ndo_eth_ioctl = phy_do_ioctl_running, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = fec_poll_controller, #endif .ndo_set_features = fec_set_features, .ndo_bpf = fec_enet_bpf, .ndo_xdp_xmit = fec_enet_xdp_xmit, + .ndo_hwtstamp_get = fec_hwtstamp_get, + .ndo_hwtstamp_set = fec_hwtstamp_set, }; static const unsigned short offset_des_active_rxq[] = { diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c index fc4674cb65be..181d9bfbee22 100644 --- a/drivers/net/ethernet/freescale/fec_ptp.c +++ b/drivers/net/ethernet/freescale/fec_ptp.c @@ -605,28 +605,12 @@ static int fec_ptp_enable(struct ptp_clock_info *ptp, } } -/** - * fec_ptp_disable_hwts - disable hardware time stamping - * @ndev: pointer to net_device - */ -void fec_ptp_disable_hwts(struct net_device *ndev) +int fec_ptp_set(struct net_device *ndev, struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack) { struct fec_enet_private *fep = netdev_priv(ndev); - fep->hwts_tx_en = 0; - fep->hwts_rx_en = 0; -} - -int fec_ptp_set(struct net_device *ndev, struct ifreq *ifr) -{ - struct fec_enet_private *fep = netdev_priv(ndev); - - struct hwtstamp_config config; - - if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) - return -EFAULT; - - switch (config.tx_type) { + switch (config->tx_type) { case HWTSTAMP_TX_OFF: fep->hwts_tx_en = 0; break; @@ -637,33 +621,28 @@ int fec_ptp_set(struct net_device *ndev, struct ifreq *ifr) return -ERANGE; } - switch (config.rx_filter) { + switch (config->rx_filter) { case HWTSTAMP_FILTER_NONE: fep->hwts_rx_en = 0; break; default: fep->hwts_rx_en = 1; - config.rx_filter = HWTSTAMP_FILTER_ALL; + config->rx_filter = HWTSTAMP_FILTER_ALL; break; } - return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? - -EFAULT : 0; + return 0; } -int fec_ptp_get(struct net_device *ndev, struct ifreq *ifr) +void fec_ptp_get(struct net_device *ndev, struct kernel_hwtstamp_config *config) { struct fec_enet_private *fep = netdev_priv(ndev); - struct hwtstamp_config config; - - config.flags = 0; - config.tx_type = fep->hwts_tx_en ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; - config.rx_filter = (fep->hwts_rx_en ? - HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE); - return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? - -EFAULT : 0; + config->flags = 0; + config->tx_type = fep->hwts_tx_en ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; + config->rx_filter = (fep->hwts_rx_en ? + HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE); } /* diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index 73f20683210e..4a1acc7234f6 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -450,39 +450,46 @@ static int lan966x_port_get_parent_id(struct net_device *dev, return 0; } -static int lan966x_port_ioctl(struct net_device *dev, struct ifreq *ifr, - int cmd) +static int lan966x_port_hwtstamp_get(struct net_device *dev, + struct kernel_hwtstamp_config *cfg) +{ + struct lan966x_port *port = netdev_priv(dev); + + if (!port->lan966x->ptp) + return -EOPNOTSUPP; + + lan966x_ptp_hwtstamp_get(port, cfg); + + return 0; +} + +static int lan966x_port_hwtstamp_set(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) { struct lan966x_port *port = netdev_priv(dev); int err; - if (cmd == SIOCSHWTSTAMP) { - err = lan966x_ptp_setup_traps(port, ifr); - if (err) - return err; - } + if (cfg->source != HWTSTAMP_SOURCE_NETDEV && + cfg->source != HWTSTAMP_SOURCE_PHYLIB) + return -EOPNOTSUPP; - if (!phy_has_hwtstamp(dev->phydev) && port->lan966x->ptp) { - switch (cmd) { - case SIOCSHWTSTAMP: - err = lan966x_ptp_hwtstamp_set(port, ifr); - if (err) - lan966x_ptp_del_traps(port); + err = lan966x_ptp_setup_traps(port, cfg); + if (err) + return err; + + if (cfg->source == HWTSTAMP_SOURCE_NETDEV) { + if (!port->lan966x->ptp) + return -EOPNOTSUPP; + err = lan966x_ptp_hwtstamp_set(port, cfg, extack); + if (err) { + lan966x_ptp_del_traps(port); return err; - case SIOCGHWTSTAMP: - return lan966x_ptp_hwtstamp_get(port, ifr); } } - if (!dev->phydev) - return -ENODEV; - - err = phy_mii_ioctl(dev->phydev, ifr, cmd); - if (err && cmd == SIOCSHWTSTAMP) - lan966x_ptp_del_traps(port); - - return err; + return 0; } static const struct net_device_ops lan966x_port_netdev_ops = { @@ -495,10 +502,12 @@ static const struct net_device_ops lan966x_port_netdev_ops = { .ndo_get_stats64 = lan966x_stats_get, .ndo_set_mac_address = lan966x_port_set_mac_address, .ndo_get_port_parent_id = lan966x_port_get_parent_id, - .ndo_eth_ioctl = lan966x_port_ioctl, + .ndo_eth_ioctl = phy_do_ioctl, .ndo_setup_tc = lan966x_tc_setup, .ndo_bpf = lan966x_xdp, .ndo_xdp_xmit = lan966x_xdp_xmit, + .ndo_hwtstamp_get = lan966x_port_hwtstamp_get, + .ndo_hwtstamp_set = lan966x_port_hwtstamp_set, }; bool lan966x_netdevice_check(const struct net_device *dev) @@ -808,6 +817,7 @@ static int lan966x_probe_port(struct lan966x *lan966x, u32 p, NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_TC; dev->hw_features |= NETIF_F_HW_TC; + dev->priv_flags |= IFF_SEE_ALL_HWTSTAMP_REQUESTS; dev->needed_headroom = IFH_LEN_BYTES; eth_hw_addr_gen(dev, lan966x->base_mac, p + 1); diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h index 27f272831ea5..b538d496e8d7 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h @@ -298,7 +298,7 @@ struct lan966x_phc { struct ptp_clock *clock; struct ptp_clock_info info; struct ptp_pin_desc pins[LAN966X_PHC_PINS_NUM]; - struct hwtstamp_config hwtstamp_config; + struct kernel_hwtstamp_config hwtstamp_config; struct lan966x *lan966x; u8 index; }; @@ -578,8 +578,11 @@ void lan966x_mdb_restore_entries(struct lan966x *lan966x); int lan966x_ptp_init(struct lan966x *lan966x); void lan966x_ptp_deinit(struct lan966x *lan966x); -int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, struct ifreq *ifr); -int lan966x_ptp_hwtstamp_get(struct lan966x_port *port, struct ifreq *ifr); +int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack); +void lan966x_ptp_hwtstamp_get(struct lan966x_port *port, + struct kernel_hwtstamp_config *cfg); void lan966x_ptp_rxtstamp(struct lan966x *lan966x, struct sk_buff *skb, u64 src_port, u64 timestamp); int lan966x_ptp_txtstamp_request(struct lan966x_port *port, @@ -590,7 +593,8 @@ irqreturn_t lan966x_ptp_irq_handler(int irq, void *args); irqreturn_t lan966x_ptp_ext_irq_handler(int irq, void *args); u32 lan966x_ptp_get_period_ps(void); int lan966x_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts); -int lan966x_ptp_setup_traps(struct lan966x_port *port, struct ifreq *ifr); +int lan966x_ptp_setup_traps(struct lan966x_port *port, + struct kernel_hwtstamp_config *cfg); int lan966x_ptp_del_traps(struct lan966x_port *port); int lan966x_fdma_xmit(struct sk_buff *skb, __be32 *ifh, struct net_device *dev); diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c b/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c index 266a21a2d124..60bd0cff6677 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c @@ -248,29 +248,23 @@ int lan966x_ptp_del_traps(struct lan966x_port *port) return err; } -int lan966x_ptp_setup_traps(struct lan966x_port *port, struct ifreq *ifr) +int lan966x_ptp_setup_traps(struct lan966x_port *port, + struct kernel_hwtstamp_config *cfg) { - struct hwtstamp_config cfg; - - if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) - return -EFAULT; - - if (cfg.rx_filter == HWTSTAMP_FILTER_NONE) + if (cfg->rx_filter == HWTSTAMP_FILTER_NONE) return lan966x_ptp_del_traps(port); else return lan966x_ptp_add_traps(port); } -int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, struct ifreq *ifr) +int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) { struct lan966x *lan966x = port->lan966x; - struct hwtstamp_config cfg; struct lan966x_phc *phc; - if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) - return -EFAULT; - - switch (cfg.tx_type) { + switch (cfg->tx_type) { case HWTSTAMP_TX_ON: port->ptp_tx_cmd = IFH_REW_OP_TWO_STEP_PTP; break; @@ -284,7 +278,7 @@ int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, struct ifreq *ifr) return -ERANGE; } - switch (cfg.rx_filter) { + switch (cfg->rx_filter) { case HWTSTAMP_FILTER_NONE: port->ptp_rx_cmd = false; break; @@ -303,7 +297,7 @@ int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, struct ifreq *ifr) case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: case HWTSTAMP_FILTER_NTP_ALL: port->ptp_rx_cmd = true; - cfg.rx_filter = HWTSTAMP_FILTER_ALL; + cfg->rx_filter = HWTSTAMP_FILTER_ALL; break; default: return -ERANGE; @@ -312,20 +306,20 @@ int lan966x_ptp_hwtstamp_set(struct lan966x_port *port, struct ifreq *ifr) /* Commit back the result & save it */ mutex_lock(&lan966x->ptp_lock); phc = &lan966x->phc[LAN966X_PHC_PORT]; - memcpy(&phc->hwtstamp_config, &cfg, sizeof(cfg)); + phc->hwtstamp_config = *cfg; mutex_unlock(&lan966x->ptp_lock); - return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; + return 0; } -int lan966x_ptp_hwtstamp_get(struct lan966x_port *port, struct ifreq *ifr) +void lan966x_ptp_hwtstamp_get(struct lan966x_port *port, + struct kernel_hwtstamp_config *cfg) { struct lan966x *lan966x = port->lan966x; struct lan966x_phc *phc; phc = &lan966x->phc[LAN966X_PHC_PORT]; - return copy_to_user(ifr->ifr_data, &phc->hwtstamp_config, - sizeof(phc->hwtstamp_config)) ? -EFAULT : 0; + *cfg = phc->hwtstamp_config; } static int lan966x_ptp_classify(struct lan966x_port *port, struct sk_buff *skb) diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h index 62c85463b634..89a9a7afa32c 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h @@ -205,7 +205,7 @@ enum sparx5_core_clockfreq { struct sparx5_phc { struct ptp_clock *clock; struct ptp_clock_info info; - struct hwtstamp_config hwtstamp_config; + struct kernel_hwtstamp_config hwtstamp_config; struct sparx5 *sparx5; u8 index; }; @@ -388,8 +388,11 @@ void sparx5_unregister_netdevs(struct sparx5 *sparx5); /* sparx5_ptp.c */ int sparx5_ptp_init(struct sparx5 *sparx5); void sparx5_ptp_deinit(struct sparx5 *sparx5); -int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr); -int sparx5_ptp_hwtstamp_get(struct sparx5_port *port, struct ifreq *ifr); +int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack); +void sparx5_ptp_hwtstamp_get(struct sparx5_port *port, + struct kernel_hwtstamp_config *cfg); void sparx5_ptp_rxtstamp(struct sparx5 *sparx5, struct sk_buff *skb, u64 timestamp); int sparx5_ptp_txtstamp_request(struct sparx5_port *port, diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c index d078156581d5..705a004b324f 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c @@ -210,22 +210,31 @@ static int sparx5_get_port_parent_id(struct net_device *dev, return 0; } -static int sparx5_port_ioctl(struct net_device *dev, struct ifreq *ifr, - int cmd) +static int sparx5_port_hwtstamp_get(struct net_device *dev, + struct kernel_hwtstamp_config *cfg) { struct sparx5_port *sparx5_port = netdev_priv(dev); struct sparx5 *sparx5 = sparx5_port->sparx5; - if (!phy_has_hwtstamp(dev->phydev) && sparx5->ptp) { - switch (cmd) { - case SIOCSHWTSTAMP: - return sparx5_ptp_hwtstamp_set(sparx5_port, ifr); - case SIOCGHWTSTAMP: - return sparx5_ptp_hwtstamp_get(sparx5_port, ifr); - } - } + if (!sparx5->ptp) + return -EOPNOTSUPP; + + sparx5_ptp_hwtstamp_get(sparx5_port, cfg); + + return 0; +} + +static int sparx5_port_hwtstamp_set(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) +{ + struct sparx5_port *sparx5_port = netdev_priv(dev); + struct sparx5 *sparx5 = sparx5_port->sparx5; + + if (!sparx5->ptp) + return -EOPNOTSUPP; - return phy_mii_ioctl(dev->phydev, ifr, cmd); + return sparx5_ptp_hwtstamp_set(sparx5_port, cfg, extack); } static const struct net_device_ops sparx5_port_netdev_ops = { @@ -238,8 +247,10 @@ static const struct net_device_ops sparx5_port_netdev_ops = { .ndo_validate_addr = eth_validate_addr, .ndo_get_stats64 = sparx5_get_stats64, .ndo_get_port_parent_id = sparx5_get_port_parent_id, - .ndo_eth_ioctl = sparx5_port_ioctl, + .ndo_eth_ioctl = phy_do_ioctl, .ndo_setup_tc = sparx5_port_setup_tc, + .ndo_hwtstamp_get = sparx5_port_hwtstamp_get, + .ndo_hwtstamp_set = sparx5_port_hwtstamp_set, }; bool sparx5_netdevice_check(const struct net_device *dev) diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c b/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c index 0edb98cef7e4..5a932460db58 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c @@ -74,10 +74,11 @@ static u64 sparx5_ptp_get_nominal_value(struct sparx5 *sparx5) return res; } -int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr) +int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) { struct sparx5 *sparx5 = port->sparx5; - struct hwtstamp_config cfg; struct sparx5_phc *phc; /* For now don't allow to run ptp on ports that are part of a bridge, @@ -88,10 +89,7 @@ int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr) if (test_bit(port->portno, sparx5->bridge_mask)) return -EINVAL; - if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) - return -EFAULT; - - switch (cfg.tx_type) { + switch (cfg->tx_type) { case HWTSTAMP_TX_ON: port->ptp_cmd = IFH_REW_OP_TWO_STEP_PTP; break; @@ -105,7 +103,7 @@ int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr) return -ERANGE; } - switch (cfg.rx_filter) { + switch (cfg->rx_filter) { case HWTSTAMP_FILTER_NONE: break; case HWTSTAMP_FILTER_ALL: @@ -122,7 +120,7 @@ int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr) case HWTSTAMP_FILTER_PTP_V2_SYNC: case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: case HWTSTAMP_FILTER_NTP_ALL: - cfg.rx_filter = HWTSTAMP_FILTER_ALL; + cfg->rx_filter = HWTSTAMP_FILTER_ALL; break; default: return -ERANGE; @@ -131,20 +129,20 @@ int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr) /* Commit back the result & save it */ mutex_lock(&sparx5->ptp_lock); phc = &sparx5->phc[SPARX5_PHC_PORT]; - memcpy(&phc->hwtstamp_config, &cfg, sizeof(cfg)); + phc->hwtstamp_config = *cfg; mutex_unlock(&sparx5->ptp_lock); - return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; + return 0; } -int sparx5_ptp_hwtstamp_get(struct sparx5_port *port, struct ifreq *ifr) +void sparx5_ptp_hwtstamp_get(struct sparx5_port *port, + struct kernel_hwtstamp_config *cfg) { struct sparx5 *sparx5 = port->sparx5; struct sparx5_phc *phc; phc = &sparx5->phc[SPARX5_PHC_PORT]; - return copy_to_user(ifr->ifr_data, &phc->hwtstamp_config, - sizeof(phc->hwtstamp_config)) ? -EFAULT : 0; + *cfg = phc->hwtstamp_config; } static void sparx5_ptp_classify(struct sparx5_port *port, struct sk_buff *skb, diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index ed908165a8b4..02bd201bc7e5 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -868,31 +868,24 @@ static int macvlan_change_mtu(struct net_device *dev, int new_mtu) return 0; } -static int macvlan_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +static int macvlan_hwtstamp_get(struct net_device *dev, + struct kernel_hwtstamp_config *cfg) { struct net_device *real_dev = macvlan_dev_real_dev(dev); - const struct net_device_ops *ops = real_dev->netdev_ops; - struct ifreq ifrr; - int err = -EOPNOTSUPP; - strscpy(ifrr.ifr_name, real_dev->name, IFNAMSIZ); - ifrr.ifr_ifru = ifr->ifr_ifru; + return generic_hwtstamp_get_lower(real_dev, cfg); +} - switch (cmd) { - case SIOCSHWTSTAMP: - if (!net_eq(dev_net(dev), &init_net)) - break; - fallthrough; - case SIOCGHWTSTAMP: - if (netif_device_present(real_dev) && ops->ndo_eth_ioctl) - err = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd); - break; - } +static int macvlan_hwtstamp_set(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) +{ + struct net_device *real_dev = macvlan_dev_real_dev(dev); - if (!err) - ifr->ifr_ifru = ifrr.ifr_ifru; + if (!net_eq(dev_net(dev), &init_net)) + return -EOPNOTSUPP; - return err; + return generic_hwtstamp_set_lower(real_dev, cfg, extack); } /* @@ -1193,7 +1186,6 @@ static const struct net_device_ops macvlan_netdev_ops = { .ndo_stop = macvlan_stop, .ndo_start_xmit = macvlan_start_xmit, .ndo_change_mtu = macvlan_change_mtu, - .ndo_eth_ioctl = macvlan_eth_ioctl, .ndo_fix_features = macvlan_fix_features, .ndo_change_rx_flags = macvlan_change_rx_flags, .ndo_set_mac_address = macvlan_set_mac_address, @@ -1212,6 +1204,8 @@ static const struct net_device_ops macvlan_netdev_ops = { #endif .ndo_get_iflink = macvlan_dev_get_iflink, .ndo_features_check = passthru_features_check, + .ndo_hwtstamp_get = macvlan_hwtstamp_get, + .ndo_hwtstamp_set = macvlan_hwtstamp_set, }; static void macvlan_dev_free(struct net_device *dev) diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 35142780fc9d..c945ed9bd14b 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -14,6 +14,8 @@ endif # dedicated loadable module, so we bundle them all together into libphy.ko ifdef CONFIG_PHYLIB libphy-y += $(mdio-bus-y) +# the stubs are built-in whenever PHYLIB is built-in or module +obj-y += stubs.o else obj-$(CONFIG_MDIO_DEVICE) += mdio-bus.o endif diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index bdf00b2b2c1d..8aec8e83038c 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -456,6 +456,40 @@ int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd) EXPORT_SYMBOL(phy_do_ioctl_running); /** + * __phy_hwtstamp_get - Get hardware timestamping configuration from PHY + * + * @phydev: the PHY device structure + * @config: structure holding the timestamping configuration + * + * Query the PHY device for its current hardware timestamping configuration. + */ +int __phy_hwtstamp_get(struct phy_device *phydev, + struct kernel_hwtstamp_config *config) +{ + if (!phydev) + return -ENODEV; + + return phy_mii_ioctl(phydev, config->ifr, SIOCGHWTSTAMP); +} + +/** + * __phy_hwtstamp_set - Modify PHY hardware timestamping configuration + * + * @phydev: the PHY device structure + * @config: structure holding the timestamping configuration + * @extack: netlink extended ack structure, for error reporting + */ +int __phy_hwtstamp_set(struct phy_device *phydev, + struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack) +{ + if (!phydev) + return -ENODEV; + + return phy_mii_ioctl(phydev, config->ifr, SIOCSHWTSTAMP); +} + +/** * phy_queue_state_machine - Trigger the state machine to run soon * * @phydev: the phy_device struct diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 61921d4dbb13..e19c4fee8d22 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -27,9 +27,11 @@ #include <linux/of.h> #include <linux/netdevice.h> #include <linux/phy.h> +#include <linux/phylib_stubs.h> #include <linux/phy_led_triggers.h> #include <linux/pse-pd/pse.h> #include <linux/property.h> +#include <linux/rtnetlink.h> #include <linux/sfp.h> #include <linux/skbuff.h> #include <linux/slab.h> @@ -3447,11 +3449,29 @@ static const struct ethtool_phy_ops phy_ethtool_phy_ops = { .start_cable_test_tdr = phy_start_cable_test_tdr, }; +static const struct phylib_stubs __phylib_stubs = { + .hwtstamp_get = __phy_hwtstamp_get, + .hwtstamp_set = __phy_hwtstamp_set, +}; + +static void phylib_register_stubs(void) +{ + phylib_stubs = &__phylib_stubs; +} + +static void phylib_unregister_stubs(void) +{ + phylib_stubs = NULL; +} + static int __init phy_init(void) { int rc; + rtnl_lock(); ethtool_set_ethtool_phy_ops(&phy_ethtool_phy_ops); + phylib_register_stubs(); + rtnl_unlock(); rc = mdio_bus_init(); if (rc) @@ -3474,7 +3494,10 @@ err_c45: err_mdio_bus: mdio_bus_exit(); err_ethtool_phy_ops: + rtnl_lock(); + phylib_unregister_stubs(); ethtool_set_ethtool_phy_ops(NULL); + rtnl_unlock(); return rc; } @@ -3484,7 +3507,10 @@ static void __exit phy_exit(void) phy_driver_unregister(&genphy_c45_driver); phy_driver_unregister(&genphy_driver); mdio_bus_exit(); + rtnl_lock(); + phylib_unregister_stubs(); ethtool_set_ethtool_phy_ops(NULL); + rtnl_unlock(); } subsys_initcall(phy_init); diff --git a/drivers/net/phy/stubs.c b/drivers/net/phy/stubs.c new file mode 100644 index 000000000000..cfb9f275eb18 --- /dev/null +++ b/drivers/net/phy/stubs.c @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Stubs for PHY library functionality called by the core network stack. + * These are necessary because CONFIG_PHYLIB can be a module, and built-in + * code cannot directly call symbols exported by modules. + */ +#include <linux/phylib_stubs.h> + +const struct phylib_stubs *phylib_stubs; +EXPORT_SYMBOL_GPL(phylib_stubs); diff --git a/include/linux/net_tstamp.h b/include/linux/net_tstamp.h index fd67f3cc0c4b..eb01c37e71e0 100644 --- a/include/linux/net_tstamp.h +++ b/include/linux/net_tstamp.h @@ -5,12 +5,23 @@ #include <uapi/linux/net_tstamp.h> +enum hwtstamp_source { + HWTSTAMP_SOURCE_NETDEV, + HWTSTAMP_SOURCE_PHYLIB, +}; + /** * struct kernel_hwtstamp_config - Kernel copy of struct hwtstamp_config * * @flags: see struct hwtstamp_config * @tx_type: see struct hwtstamp_config * @rx_filter: see struct hwtstamp_config + * @ifr: pointer to ifreq structure from the original ioctl request, to pass to + * a legacy implementation of a lower driver + * @copied_to_user: request was passed to a legacy implementation which already + * copied the ioctl request back to user space + * @source: indication whether timestamps should come from the netdev or from + * an attached phylib PHY * * Prefer using this structure for in-kernel processing of hardware * timestamping configuration, over the inextensible struct hwtstamp_config @@ -20,6 +31,9 @@ struct kernel_hwtstamp_config { int flags; int tx_type; int rx_filter; + struct ifreq *ifr; + bool copied_to_user; + enum hwtstamp_source source; }; static inline void hwtstamp_config_to_kernel(struct kernel_hwtstamp_config *kernel_cfg, @@ -30,4 +44,20 @@ static inline void hwtstamp_config_to_kernel(struct kernel_hwtstamp_config *kern kernel_cfg->rx_filter = cfg->rx_filter; } +static inline void hwtstamp_config_from_kernel(struct hwtstamp_config *cfg, + const struct kernel_hwtstamp_config *kernel_cfg) +{ + cfg->flags = kernel_cfg->flags; + cfg->tx_type = kernel_cfg->tx_type; + cfg->rx_filter = kernel_cfg->rx_filter; +} + +static inline bool kernel_hwtstamp_config_changed(const struct kernel_hwtstamp_config *a, + const struct kernel_hwtstamp_config *b) +{ + return a->flags != b->flags || + a->tx_type != b->tx_type || + a->rx_filter != b->rx_filter; +} + #endif /* _LINUX_NET_TIMESTAMPING_H_ */ diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 84c36a7f873f..85d594460c66 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -57,6 +57,7 @@ struct netpoll_info; struct device; struct ethtool_ops; +struct kernel_hwtstamp_config; struct phy_device; struct dsa_port; struct ip_tunnel_parm; @@ -1418,6 +1419,16 @@ struct netdev_net_notifier { * Get hardware timestamp based on normal/adjustable time or free running * cycle counter. This function is required if physical clock supports a * free running cycle counter. + * + * int (*ndo_hwtstamp_get)(struct net_device *dev, + * struct kernel_hwtstamp_config *kernel_config); + * Get the currently configured hardware timestamping parameters for the + * NIC device. + * + * int (*ndo_hwtstamp_set)(struct net_device *dev, + * struct kernel_hwtstamp_config *kernel_config, + * struct netlink_ext_ack *extack); + * Change the hardware timestamping parameters for NIC device. */ struct net_device_ops { int (*ndo_init)(struct net_device *dev); @@ -1652,6 +1663,11 @@ struct net_device_ops { ktime_t (*ndo_get_tstamp)(struct net_device *dev, const struct skb_shared_hwtstamps *hwtstamps, bool cycles); + int (*ndo_hwtstamp_get)(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_config); + int (*ndo_hwtstamp_set)(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_config, + struct netlink_ext_ack *extack); }; struct xdp_metadata_ops { @@ -1708,6 +1724,9 @@ struct xdp_metadata_ops { * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with * skb_headlen(skb) == 0 (data starts from frag0) * @IFF_CHANGE_PROTO_DOWN: device supports setting carrier via IFLA_PROTO_DOWN + * @IFF_SEE_ALL_HWTSTAMP_REQUESTS: device wants to see calls to + * ndo_hwtstamp_set() for all timestamp requests regardless of source, + * even if those aren't HWTSTAMP_SOURCE_NETDEV. */ enum netdev_priv_flags { IFF_802_1Q_VLAN = 1<<0, @@ -1743,6 +1762,7 @@ enum netdev_priv_flags { IFF_NO_ADDRCONF = BIT_ULL(30), IFF_TX_SKB_NO_LINEAR = BIT_ULL(31), IFF_CHANGE_PROTO_DOWN = BIT_ULL(32), + IFF_SEE_ALL_HWTSTAMP_REQUESTS = BIT_ULL(33), }; #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN @@ -3934,6 +3954,11 @@ int put_user_ifreq(struct ifreq *ifr, void __user *arg); int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr, void __user *data, bool *need_copyout); int dev_ifconf(struct net *net, struct ifconf __user *ifc); +int generic_hwtstamp_get_lower(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_cfg); +int generic_hwtstamp_set_lower(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_cfg, + struct netlink_ext_ack *extack); int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *userdata); unsigned int dev_get_flags(const struct net_device *); int __dev_change_flags(struct net_device *dev, unsigned int flags, diff --git a/include/linux/phy.h b/include/linux/phy.h index b254848a9c99..ba08b0e60279 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -298,6 +298,7 @@ static inline const char *phy_modes(phy_interface_t interface) #define MII_BUS_ID_SIZE 61 struct device; +struct kernel_hwtstamp_config; struct phylink; struct sfp_bus; struct sfp_upstream_ops; @@ -1955,6 +1956,12 @@ int phy_ethtool_set_plca_cfg(struct phy_device *phydev, int phy_ethtool_get_plca_status(struct phy_device *phydev, struct phy_plca_status *plca_st); +int __phy_hwtstamp_get(struct phy_device *phydev, + struct kernel_hwtstamp_config *config); +int __phy_hwtstamp_set(struct phy_device *phydev, + struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack); + static inline int phy_package_read(struct phy_device *phydev, u32 regnum) { struct phy_package_shared *shared = phydev->shared; diff --git a/include/linux/phylib_stubs.h b/include/linux/phylib_stubs.h new file mode 100644 index 000000000000..1279f48c8a70 --- /dev/null +++ b/include/linux/phylib_stubs.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Stubs for the Network PHY library + */ + +#include <linux/rtnetlink.h> + +struct kernel_hwtstamp_config; +struct netlink_ext_ack; +struct phy_device; + +#if IS_ENABLED(CONFIG_PHYLIB) + +extern const struct phylib_stubs *phylib_stubs; + +struct phylib_stubs { + int (*hwtstamp_get)(struct phy_device *phydev, + struct kernel_hwtstamp_config *config); + int (*hwtstamp_set)(struct phy_device *phydev, + struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack); +}; + +static inline int phy_hwtstamp_get(struct phy_device *phydev, + struct kernel_hwtstamp_config *config) +{ + /* phylib_register_stubs() and phylib_unregister_stubs() + * also run under rtnl_lock(). + */ + ASSERT_RTNL(); + + if (!phylib_stubs) + return -EOPNOTSUPP; + + return phylib_stubs->hwtstamp_get(phydev, config); +} + +static inline int phy_hwtstamp_set(struct phy_device *phydev, + struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack) +{ + /* phylib_register_stubs() and phylib_unregister_stubs() + * also run under rtnl_lock(). + */ + ASSERT_RTNL(); + + if (!phylib_stubs) + return -EOPNOTSUPP; + + return phylib_stubs->hwtstamp_set(phydev, config, extack); +} + +#else + +static inline int phy_hwtstamp_get(struct phy_device *phydev, + struct kernel_hwtstamp_config *config) +{ + return -EOPNOTSUPP; +} + +static inline int phy_hwtstamp_set(struct phy_device *phydev, + struct kernel_hwtstamp_config *config, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +#endif diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index b90781b9ece6..2a7f1b15714a 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -354,6 +354,26 @@ out: return 0; } +static int vlan_hwtstamp_get(struct net_device *dev, + struct kernel_hwtstamp_config *cfg) +{ + struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; + + return generic_hwtstamp_get_lower(real_dev, cfg); +} + +static int vlan_hwtstamp_set(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) +{ + struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; + + if (!net_eq(dev_net(dev), dev_net(real_dev))) + return -EOPNOTSUPP; + + return generic_hwtstamp_set_lower(real_dev, cfg, extack); +} + static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; @@ -365,14 +385,9 @@ static int vlan_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) ifrr.ifr_ifru = ifr->ifr_ifru; switch (cmd) { - case SIOCSHWTSTAMP: - if (!net_eq(dev_net(dev), dev_net(real_dev))) - break; - fallthrough; case SIOCGMIIPHY: case SIOCGMIIREG: case SIOCSMIIREG: - case SIOCGHWTSTAMP: if (netif_device_present(real_dev) && ops->ndo_eth_ioctl) err = ops->ndo_eth_ioctl(real_dev, &ifrr, cmd); break; @@ -1081,6 +1096,8 @@ static const struct net_device_ops vlan_netdev_ops = { .ndo_fix_features = vlan_dev_fix_features, .ndo_get_iflink = vlan_dev_get_iflink, .ndo_fill_forward_path = vlan_dev_fill_forward_path, + .ndo_hwtstamp_get = vlan_hwtstamp_get, + .ndo_hwtstamp_set = vlan_hwtstamp_set, }; static void vlan_dev_free(struct net_device *dev) diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c index 3730945ee294..72e077022348 100644 --- a/net/core/dev_ioctl.c +++ b/net/core/dev_ioctl.c @@ -5,6 +5,7 @@ #include <linux/etherdevice.h> #include <linux/rtnetlink.h> #include <linux/net_tstamp.h> +#include <linux/phylib_stubs.h> #include <linux/wireless.h> #include <linux/if_bridge.h> #include <net/dsa_stubs.h> @@ -252,14 +253,118 @@ static int dev_eth_ioctl(struct net_device *dev, return ops->ndo_eth_ioctl(dev, ifr, cmd); } +/** + * dev_get_hwtstamp_phylib() - Get hardware timestamping settings of NIC + * or of attached phylib PHY + * @dev: Network device + * @cfg: Timestamping configuration structure + * + * Helper for enforcing a common policy that phylib timestamping, if available, + * should take precedence in front of hardware timestamping provided by the + * netdev. + * + * Note: phy_mii_ioctl() only handles SIOCSHWTSTAMP (not SIOCGHWTSTAMP), and + * there only exists a phydev->mii_ts->hwtstamp() method. So this will return + * -EOPNOTSUPP for phylib for now, which is still more accurate than letting + * the netdev handle the GET request. + */ +static int dev_get_hwtstamp_phylib(struct net_device *dev, + struct kernel_hwtstamp_config *cfg) +{ + if (phy_has_hwtstamp(dev->phydev)) + return phy_hwtstamp_get(dev->phydev, cfg); + + return dev->netdev_ops->ndo_hwtstamp_get(dev, cfg); +} + static int dev_get_hwtstamp(struct net_device *dev, struct ifreq *ifr) { - return dev_eth_ioctl(dev, ifr, SIOCGHWTSTAMP); + const struct net_device_ops *ops = dev->netdev_ops; + struct kernel_hwtstamp_config kernel_cfg = {}; + struct hwtstamp_config cfg; + int err; + + if (!ops->ndo_hwtstamp_get) + return dev_eth_ioctl(dev, ifr, SIOCGHWTSTAMP); /* legacy */ + + if (!netif_device_present(dev)) + return -ENODEV; + + kernel_cfg.ifr = ifr; + err = dev_get_hwtstamp_phylib(dev, &kernel_cfg); + if (err) + return err; + + /* If the request was resolved through an unconverted driver, omit + * the copy_to_user(), since the implementation has already done that + */ + if (!kernel_cfg.copied_to_user) { + hwtstamp_config_from_kernel(&cfg, &kernel_cfg); + + if (copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg))) + return -EFAULT; + } + + return 0; +} + +/** + * dev_set_hwtstamp_phylib() - Change hardware timestamping of NIC + * or of attached phylib PHY + * @dev: Network device + * @cfg: Timestamping configuration structure + * @extack: Netlink extended ack message structure, for error reporting + * + * Helper for enforcing a common policy that phylib timestamping, if available, + * should take precedence in front of hardware timestamping provided by the + * netdev. If the netdev driver needs to perform specific actions even for PHY + * timestamping to work properly (a switch port must trap the timestamped + * frames and not forward them), it must set IFF_SEE_ALL_HWTSTAMP_REQUESTS in + * dev->priv_flags. + */ +static int dev_set_hwtstamp_phylib(struct net_device *dev, + struct kernel_hwtstamp_config *cfg, + struct netlink_ext_ack *extack) +{ + const struct net_device_ops *ops = dev->netdev_ops; + bool phy_ts = phy_has_hwtstamp(dev->phydev); + struct kernel_hwtstamp_config old_cfg = {}; + bool changed = false; + int err; + + cfg->source = phy_ts ? HWTSTAMP_SOURCE_PHYLIB : HWTSTAMP_SOURCE_NETDEV; + + if (!phy_ts || (dev->priv_flags & IFF_SEE_ALL_HWTSTAMP_REQUESTS)) { + err = ops->ndo_hwtstamp_get(dev, &old_cfg); + if (err) + return err; + + err = ops->ndo_hwtstamp_set(dev, cfg, extack); + if (err) { + if (extack->_msg) + netdev_err(dev, "%s\n", extack->_msg); + return err; + } + + changed = kernel_hwtstamp_config_changed(&old_cfg, cfg); + } + + if (phy_ts) { + err = phy_hwtstamp_set(dev->phydev, cfg, extack); + if (err) { + if (changed) + ops->ndo_hwtstamp_set(dev, &old_cfg, NULL); + return err; + } + } + + return 0; } static int dev_set_hwtstamp(struct net_device *dev, struct ifreq *ifr) { - struct kernel_hwtstamp_config kernel_cfg; + const struct net_device_ops *ops = dev->netdev_ops; + struct kernel_hwtstamp_config kernel_cfg = {}; struct netlink_ext_ack extack = {}; struct hwtstamp_config cfg; int err; @@ -268,6 +373,7 @@ static int dev_set_hwtstamp(struct net_device *dev, struct ifreq *ifr) return -EFAULT; hwtstamp_config_to_kernel(&kernel_cfg, &cfg); + kernel_cfg.ifr = ifr; err = net_hwtstamp_validate(&kernel_cfg); if (err) @@ -280,8 +386,80 @@ static int dev_set_hwtstamp(struct net_device *dev, struct ifreq *ifr) return err; } - return dev_eth_ioctl(dev, ifr, SIOCSHWTSTAMP); + if (!ops->ndo_hwtstamp_set) + return dev_eth_ioctl(dev, ifr, SIOCSHWTSTAMP); /* legacy */ + + if (!netif_device_present(dev)) + return -ENODEV; + + err = dev_set_hwtstamp_phylib(dev, &kernel_cfg, &extack); + if (err) + return err; + + /* The driver may have modified the configuration, so copy the + * updated version of it back to user space + */ + if (!kernel_cfg.copied_to_user) { + hwtstamp_config_from_kernel(&cfg, &kernel_cfg); + + if (copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg))) + return -EFAULT; + } + + return 0; +} + +static int generic_hwtstamp_ioctl_lower(struct net_device *dev, int cmd, + struct kernel_hwtstamp_config *kernel_cfg) +{ + struct ifreq ifrr; + int err; + + strscpy_pad(ifrr.ifr_name, dev->name, IFNAMSIZ); + ifrr.ifr_ifru = kernel_cfg->ifr->ifr_ifru; + + err = dev_eth_ioctl(dev, &ifrr, cmd); + if (err) + return err; + + kernel_cfg->ifr->ifr_ifru = ifrr.ifr_ifru; + kernel_cfg->copied_to_user = true; + + return 0; +} + +int generic_hwtstamp_get_lower(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_cfg) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (!netif_device_present(dev)) + return -ENODEV; + + if (ops->ndo_hwtstamp_get) + return dev_get_hwtstamp_phylib(dev, kernel_cfg); + + /* Legacy path: unconverted lower driver */ + return generic_hwtstamp_ioctl_lower(dev, SIOCGHWTSTAMP, kernel_cfg); +} +EXPORT_SYMBOL(generic_hwtstamp_get_lower); + +int generic_hwtstamp_set_lower(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_cfg, + struct netlink_ext_ack *extack) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (!netif_device_present(dev)) + return -ENODEV; + + if (ops->ndo_hwtstamp_set) + return dev_set_hwtstamp_phylib(dev, kernel_cfg, extack); + + /* Legacy path: unconverted lower driver */ + return generic_hwtstamp_ioctl_lower(dev, SIOCSHWTSTAMP, kernel_cfg); } +EXPORT_SYMBOL(generic_hwtstamp_set_lower); static int dev_siocbond(struct net_device *dev, struct ifreq *ifr, unsigned int cmd) diff --git a/net/ethtool/common.c b/net/ethtool/common.c index 5fb19050991e..f5598c5f50de 100644 --- a/net/ethtool/common.c +++ b/net/ethtool/common.c @@ -665,9 +665,8 @@ const struct ethtool_phy_ops *ethtool_phy_ops; void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops) { - rtnl_lock(); + ASSERT_RTNL(); ethtool_phy_ops = ops; - rtnl_unlock(); } EXPORT_SYMBOL_GPL(ethtool_set_ethtool_phy_ops); |