diff --git a/drivers/net/ethernet/google/gve/gve.h b/drivers/net/ethernet/google/gve/gve.h index 527e17da60bc..be4b5791c245 100644 --- a/drivers/net/ethernet/google/gve/gve.h +++ b/drivers/net/ethernet/google/gve/gve.h @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -882,6 +883,7 @@ struct gve_priv { /* True if the device supports reading the nic clock */ bool nic_timestamp_supported; struct gve_ptp *ptp; + struct kernel_hwtstamp_config ts_config; struct gve_nic_ts_report *nic_ts_report; dma_addr_t nic_ts_report_bus; u64 last_sync_nic_counter; /* Clock counter from last NIC TS report */ diff --git a/drivers/net/ethernet/google/gve/gve_desc_dqo.h b/drivers/net/ethernet/google/gve/gve_desc_dqo.h index f79cd0591110..d17da841b5a0 100644 --- a/drivers/net/ethernet/google/gve/gve_desc_dqo.h +++ b/drivers/net/ethernet/google/gve/gve_desc_dqo.h @@ -247,7 +247,8 @@ struct gve_rx_compl_desc_dqo { }; __le32 hash; __le32 reserved6; - __le64 reserved7; + __le32 reserved7; + __le32 ts; /* timestamp in nanosecs */ } __packed; static_assert(sizeof(struct gve_rx_compl_desc_dqo) == 32); diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c index bc2f36962ee8..7fff1409b121 100644 --- a/drivers/net/ethernet/google/gve/gve_main.c +++ b/drivers/net/ethernet/google/gve/gve_main.c @@ -727,6 +727,7 @@ static void gve_teardown_device_resources(struct gve_priv *priv) gve_free_counter_array(priv); gve_free_notify_blocks(priv); gve_free_stats_report(priv); + gve_teardown_clock(priv); gve_clear_device_resources_ok(priv); } @@ -2047,6 +2048,46 @@ static int gve_set_features(struct net_device *netdev, return err; } +static int gve_get_ts_config(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_config) +{ + struct gve_priv *priv = netdev_priv(dev); + + *kernel_config = priv->ts_config; + return 0; +} + +static int gve_set_ts_config(struct net_device *dev, + struct kernel_hwtstamp_config *kernel_config, + struct netlink_ext_ack *extack) +{ + struct gve_priv *priv = netdev_priv(dev); + + if (kernel_config->tx_type != HWTSTAMP_TX_OFF) { + NL_SET_ERR_MSG_MOD(extack, "TX timestamping is not supported"); + return -ERANGE; + } + + if (kernel_config->rx_filter != HWTSTAMP_FILTER_NONE) { + if (!priv->nic_ts_report) { + NL_SET_ERR_MSG_MOD(extack, + "RX timestamping is not supported"); + kernel_config->rx_filter = HWTSTAMP_FILTER_NONE; + return -EOPNOTSUPP; + } + + kernel_config->rx_filter = HWTSTAMP_FILTER_ALL; + gve_clock_nic_ts_read(priv); + ptp_schedule_worker(priv->ptp->clock, 0); + } else { + ptp_cancel_worker_sync(priv->ptp->clock); + } + + priv->ts_config.rx_filter = kernel_config->rx_filter; + + return 0; +} + static const struct net_device_ops gve_netdev_ops = { .ndo_start_xmit = gve_start_xmit, .ndo_features_check = gve_features_check, @@ -2058,6 +2099,8 @@ static const struct net_device_ops gve_netdev_ops = { .ndo_bpf = gve_xdp, .ndo_xdp_xmit = gve_xdp_xmit, .ndo_xsk_wakeup = gve_xsk_wakeup, + .ndo_hwtstamp_get = gve_get_ts_config, + .ndo_hwtstamp_set = gve_set_ts_config, }; static void gve_handle_status(struct gve_priv *priv, u32 status) @@ -2277,6 +2320,9 @@ static int gve_init_priv(struct gve_priv *priv, bool skip_describe_device) priv->rx_coalesce_usecs = GVE_RX_IRQ_RATELIMIT_US_DQO; } + priv->ts_config.tx_type = HWTSTAMP_TX_OFF; + priv->ts_config.rx_filter = HWTSTAMP_FILTER_NONE; + setup_device: gve_set_netdev_xdp_features(priv); err = gve_setup_device_resources(priv); diff --git a/drivers/net/ethernet/google/gve/gve_rx_dqo.c b/drivers/net/ethernet/google/gve/gve_rx_dqo.c index 9aadf8435f8b..0be41a0cdd15 100644 --- a/drivers/net/ethernet/google/gve/gve_rx_dqo.c +++ b/drivers/net/ethernet/google/gve/gve_rx_dqo.c @@ -450,7 +450,7 @@ static void gve_rx_skb_hash(struct sk_buff *skb, * Note that this means if the time delta between packet reception and the last * clock read is greater than ~2 seconds, this will provide invalid results. */ -static void __maybe_unused gve_rx_skb_hwtstamp(struct gve_rx_ring *rx, u32 hwts) +static void gve_rx_skb_hwtstamp(struct gve_rx_ring *rx, u32 hwts) { u64 last_read = READ_ONCE(rx->gve->last_sync_nic_counter); struct sk_buff *skb = rx->ctx.skb_head; @@ -790,6 +790,9 @@ static int gve_rx_complete_skb(struct gve_rx_ring *rx, struct napi_struct *napi, if (feat & NETIF_F_RXCSUM) gve_rx_skb_csum(rx->ctx.skb_head, desc, ptype); + if (rx->gve->ts_config.rx_filter == HWTSTAMP_FILTER_ALL) + gve_rx_skb_hwtstamp(rx, le32_to_cpu(desc->ts)); + /* RSC packets must set gso_size otherwise the TCP stack will complain * that packets are larger than MTU. */