Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

3 files changed, 142 insertions, 147 deletions

diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 9c410f93a103..14dfec4db8f9 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -768,8 +768,6 @@
 #define gem_readl_n(port, reg, idx)		(port)->macb_reg_readl((port), GEM_##reg + idx * 4)
 #define gem_writel_n(port, reg, idx, value)	(port)->macb_reg_writel((port), GEM_##reg + idx * 4, (value))
 
-#define PTP_TS_BUFFER_SIZE		128 /* must be power of 2 */
-
 /* Conditional GEM/MACB macros.  These perform the operation to the correct
  * register dependent on whether the device is a GEM or a MACB.  For registers
  * and bitfields that are common across both devices, use macb_{read,write}l
@@ -819,11 +817,6 @@ struct macb_dma_desc_ptp {
 	u32	ts_1;
 	u32	ts_2;
 };
-
-struct gem_tx_ts {
-	struct sk_buff *skb;
-	struct macb_dma_desc_ptp desc_ptp;
-};
 #endif
 
 /* DMA descriptor bitfields */
@@ -1224,12 +1217,6 @@ struct macb_queue {
 	void			*rx_buffers;
 	struct napi_struct	napi_rx;
 	struct queue_stats stats;
-
-#ifdef CONFIG_MACB_USE_HWSTAMP
-	struct work_struct	tx_ts_task;
-	unsigned int		tx_ts_head, tx_ts_tail;
-	struct gem_tx_ts	tx_timestamps[PTP_TS_BUFFER_SIZE];
-#endif
 };
 
 struct ethtool_rx_fs_item {
@@ -1340,14 +1327,14 @@ enum macb_bd_control {
 
 void gem_ptp_init(struct net_device *ndev);
 void gem_ptp_remove(struct net_device *ndev);
-int gem_ptp_txstamp(struct macb_queue *queue, struct sk_buff *skb, struct macb_dma_desc *des);
+void gem_ptp_txstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc);
 void gem_ptp_rxstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc);
-static inline int gem_ptp_do_txstamp(struct macb_queue *queue, struct sk_buff *skb, struct macb_dma_desc *desc)
+static inline void gem_ptp_do_txstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc)
 {
-	if (queue->bp->tstamp_config.tx_type == TSTAMP_DISABLED)
-		return -ENOTSUPP;
+	if (bp->tstamp_config.tx_type == TSTAMP_DISABLED)
+		return;
 
-	return gem_ptp_txstamp(queue, skb, desc);
+	gem_ptp_txstamp(bp, skb, desc);
 }
 
 static inline void gem_ptp_do_rxstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc)
@@ -1363,11 +1350,7 @@ int gem_set_hwtst(struct net_device *dev, struct ifreq *ifr, int cmd);
 static inline void gem_ptp_init(struct net_device *ndev) { }
 static inline void gem_ptp_remove(struct net_device *ndev) { }
 
-static inline int gem_ptp_do_txstamp(struct macb_queue *queue, struct sk_buff *skb, struct macb_dma_desc *desc)
-{
-	return -1;
-}
-
+static inline void gem_ptp_do_txstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc) { }
 static inline void gem_ptp_do_rxstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc) { }
 #endif
 
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 6cda31520c42..6e141a8bbf43 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -334,7 +334,7 @@ static int macb_mdio_wait_for_idle(struct macb *bp)
 				  1, MACB_MDIO_TIMEOUT);
 }
 
-static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+static int macb_mdio_read_c22(struct mii_bus *bus, int mii_id, int regnum)
 {
 	struct macb *bp = bus->priv;
 	int status;
@@ -347,35 +347,62 @@ static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 	if (status < 0)
 		goto mdio_read_exit;
 
-	if (regnum & MII_ADDR_C45) {
-		macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C45_SOF)
-			    | MACB_BF(RW, MACB_MAN_C45_ADDR)
-			    | MACB_BF(PHYA, mii_id)
-			    | MACB_BF(REGA, (regnum >> 16) & 0x1F)
-			    | MACB_BF(DATA, regnum & 0xFFFF)
-			    | MACB_BF(CODE, MACB_MAN_C45_CODE)));
-
-		status = macb_mdio_wait_for_idle(bp);
-		if (status < 0)
-			goto mdio_read_exit;
-
-		macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C45_SOF)
-			    | MACB_BF(RW, MACB_MAN_C45_READ)
-			    | MACB_BF(PHYA, mii_id)
-			    | MACB_BF(REGA, (regnum >> 16) & 0x1F)
-			    | MACB_BF(CODE, MACB_MAN_C45_CODE)));
-	} else {
-		macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C22_SOF)
-				| MACB_BF(RW, MACB_MAN_C22_READ)
-				| MACB_BF(PHYA, mii_id)
-				| MACB_BF(REGA, regnum)
-				| MACB_BF(CODE, MACB_MAN_C22_CODE)));
+	macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C22_SOF)
+			      | MACB_BF(RW, MACB_MAN_C22_READ)
+			      | MACB_BF(PHYA, mii_id)
+			      | MACB_BF(REGA, regnum)
+			      | MACB_BF(CODE, MACB_MAN_C22_CODE)));
+
+	status = macb_mdio_wait_for_idle(bp);
+	if (status < 0)
+		goto mdio_read_exit;
+
+	status = MACB_BFEXT(DATA, macb_readl(bp, MAN));
+
+mdio_read_exit:
+	pm_runtime_mark_last_busy(&bp->pdev->dev);
+	pm_runtime_put_autosuspend(&bp->pdev->dev);
+mdio_pm_exit:
+	return status;
+}
+
+static int macb_mdio_read_c45(struct mii_bus *bus, int mii_id, int devad,
+			      int regnum)
+{
+	struct macb *bp = bus->priv;
+	int status;
+
+	status = pm_runtime_get_sync(&bp->pdev->dev);
+	if (status < 0) {
+		pm_runtime_put_noidle(&bp->pdev->dev);
+		goto mdio_pm_exit;
 	}
 
 	status = macb_mdio_wait_for_idle(bp);
 	if (status < 0)
 		goto mdio_read_exit;
 
+	macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C45_SOF)
+			      | MACB_BF(RW, MACB_MAN_C45_ADDR)
+			      | MACB_BF(PHYA, mii_id)
+			      | MACB_BF(REGA, devad & 0x1F)
+			      | MACB_BF(DATA, regnum & 0xFFFF)
+			      | MACB_BF(CODE, MACB_MAN_C45_CODE)));
+
+	status = macb_mdio_wait_for_idle(bp);
+	if (status < 0)
+		goto mdio_read_exit;
+
+	macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C45_SOF)
+			      | MACB_BF(RW, MACB_MAN_C45_READ)
+			      | MACB_BF(PHYA, mii_id)
+			      | MACB_BF(REGA, devad & 0x1F)
+			      | MACB_BF(CODE, MACB_MAN_C45_CODE)));
+
+	status = macb_mdio_wait_for_idle(bp);
+	if (status < 0)
+		goto mdio_read_exit;
+
 	status = MACB_BFEXT(DATA, macb_readl(bp, MAN));
 
 mdio_read_exit:
@@ -385,8 +412,8 @@ mdio_pm_exit:
 	return status;
 }
 
-static int macb_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
-			   u16 value)
+static int macb_mdio_write_c22(struct mii_bus *bus, int mii_id, int regnum,
+			       u16 value)
 {
 	struct macb *bp = bus->priv;
 	int status;
@@ -399,37 +426,63 @@ static int macb_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
 	if (status < 0)
 		goto mdio_write_exit;
 
-	if (regnum & MII_ADDR_C45) {
-		macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C45_SOF)
-			    | MACB_BF(RW, MACB_MAN_C45_ADDR)
-			    | MACB_BF(PHYA, mii_id)
-			    | MACB_BF(REGA, (regnum >> 16) & 0x1F)
-			    | MACB_BF(DATA, regnum & 0xFFFF)
-			    | MACB_BF(CODE, MACB_MAN_C45_CODE)));
-
-		status = macb_mdio_wait_for_idle(bp);
-		if (status < 0)
-			goto mdio_write_exit;
-
-		macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C45_SOF)
-			    | MACB_BF(RW, MACB_MAN_C45_WRITE)
-			    | MACB_BF(PHYA, mii_id)
-			    | MACB_BF(REGA, (regnum >> 16) & 0x1F)
-			    | MACB_BF(CODE, MACB_MAN_C45_CODE)
-			    | MACB_BF(DATA, value)));
-	} else {
-		macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C22_SOF)
-				| MACB_BF(RW, MACB_MAN_C22_WRITE)
-				| MACB_BF(PHYA, mii_id)
-				| MACB_BF(REGA, regnum)
-				| MACB_BF(CODE, MACB_MAN_C22_CODE)
-				| MACB_BF(DATA, value)));
+	macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C22_SOF)
+			      | MACB_BF(RW, MACB_MAN_C22_WRITE)
+			      | MACB_BF(PHYA, mii_id)
+			      | MACB_BF(REGA, regnum)
+			      | MACB_BF(CODE, MACB_MAN_C22_CODE)
+			      | MACB_BF(DATA, value)));
+
+	status = macb_mdio_wait_for_idle(bp);
+	if (status < 0)
+		goto mdio_write_exit;
+
+mdio_write_exit:
+	pm_runtime_mark_last_busy(&bp->pdev->dev);
+	pm_runtime_put_autosuspend(&bp->pdev->dev);
+mdio_pm_exit:
+	return status;
+}
+
+static int macb_mdio_write_c45(struct mii_bus *bus, int mii_id,
+			       int devad, int regnum,
+			       u16 value)
+{
+	struct macb *bp = bus->priv;
+	int status;
+
+	status = pm_runtime_get_sync(&bp->pdev->dev);
+	if (status < 0) {
+		pm_runtime_put_noidle(&bp->pdev->dev);
+		goto mdio_pm_exit;
 	}
 
 	status = macb_mdio_wait_for_idle(bp);
 	if (status < 0)
 		goto mdio_write_exit;
 
+	macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C45_SOF)
+			      | MACB_BF(RW, MACB_MAN_C45_ADDR)
+			      | MACB_BF(PHYA, mii_id)
+			      | MACB_BF(REGA, devad & 0x1F)
+			      | MACB_BF(DATA, regnum & 0xFFFF)
+			      | MACB_BF(CODE, MACB_MAN_C45_CODE)));
+
+	status = macb_mdio_wait_for_idle(bp);
+	if (status < 0)
+		goto mdio_write_exit;
+
+	macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_C45_SOF)
+			      | MACB_BF(RW, MACB_MAN_C45_WRITE)
+			      | MACB_BF(PHYA, mii_id)
+			      | MACB_BF(REGA, devad & 0x1F)
+			      | MACB_BF(CODE, MACB_MAN_C45_CODE)
+			      | MACB_BF(DATA, value)));
+
+	status = macb_mdio_wait_for_idle(bp);
+	if (status < 0)
+		goto mdio_write_exit;
+
 mdio_write_exit:
 	pm_runtime_mark_last_busy(&bp->pdev->dev);
 	pm_runtime_put_autosuspend(&bp->pdev->dev);
@@ -902,8 +955,10 @@ static int macb_mii_init(struct macb *bp)
 	}
 
 	bp->mii_bus->name = "MACB_mii_bus";
-	bp->mii_bus->read = &macb_mdio_read;
-	bp->mii_bus->write = &macb_mdio_write;
+	bp->mii_bus->read = &macb_mdio_read_c22;
+	bp->mii_bus->write = &macb_mdio_write_c22;
+	bp->mii_bus->read_c45 = &macb_mdio_read_c45;
+	bp->mii_bus->write_c45 = &macb_mdio_write_c45;
 	snprintf(bp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
 		 bp->pdev->name, bp->pdev->id);
 	bp->mii_bus->priv = bp;
@@ -1191,13 +1246,9 @@ static int macb_tx_complete(struct macb_queue *queue, int budget)
 			/* First, update TX stats if needed */
 			if (skb) {
 				if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
-				    !ptp_one_step_sync(skb) &&
-				    gem_ptp_do_txstamp(queue, skb, desc) == 0) {
-					/* skb now belongs to timestamp buffer
-					 * and will be removed later
-					 */
-					tx_skb->skb = NULL;
-				}
+				    !ptp_one_step_sync(skb))
+					gem_ptp_do_txstamp(bp, skb, desc);
+
 				netdev_vdbg(bp->dev, "skb %u (data %p) TX complete\n",
 					    macb_tx_ring_wrap(bp, tail),
 					    skb->data);
@@ -2253,6 +2304,12 @@ static netdev_tx_t macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		return ret;
 	}
 
+#ifdef CONFIG_MACB_USE_HWSTAMP
+	if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
+	    (bp->hw_dma_cap & HW_DMA_CAP_PTP))
+		skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+#endif
+
 	is_lso = (skb_shinfo(skb)->gso_size != 0);
 
 	if (is_lso) {
diff --git a/drivers/net/ethernet/cadence/macb_ptp.c b/drivers/net/ethernet/cadence/macb_ptp.c
index e6cb20aaa76a..f962a95068a0 100644
--- a/drivers/net/ethernet/cadence/macb_ptp.c
+++ b/drivers/net/ethernet/cadence/macb_ptp.c
@@ -292,79 +292,39 @@ void gem_ptp_rxstamp(struct macb *bp, struct sk_buff *skb,
 	}
 }
 
-static void gem_tstamp_tx(struct macb *bp, struct sk_buff *skb,
-			  struct macb_dma_desc_ptp *desc_ptp)
+void gem_ptp_txstamp(struct macb *bp, struct sk_buff *skb,
+		     struct macb_dma_desc *desc)
 {
 	struct skb_shared_hwtstamps shhwtstamps;
-	struct timespec64 ts;
-
-	gem_hw_timestamp(bp, desc_ptp->ts_1, desc_ptp->ts_2, &ts);
-	memset(&shhwtstamps, 0, sizeof(shhwtstamps));
-	shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
-	skb_tstamp_tx(skb, &shhwtstamps);
-}
-
-int gem_ptp_txstamp(struct macb_queue *queue, struct sk_buff *skb,
-		    struct macb_dma_desc *desc)
-{
-	unsigned long tail = READ_ONCE(queue->tx_ts_tail);
-	unsigned long head = queue->tx_ts_head;
 	struct macb_dma_desc_ptp *desc_ptp;
-	struct gem_tx_ts *tx_timestamp;
-
-	if (!GEM_BFEXT(DMA_TXVALID, desc->ctrl))
-		return -EINVAL;
+	struct timespec64 ts;
 
-	if (CIRC_SPACE(head, tail, PTP_TS_BUFFER_SIZE) == 0)
-		return -ENOMEM;
+	if (!GEM_BFEXT(DMA_TXVALID, desc->ctrl)) {
+		dev_warn_ratelimited(&bp->pdev->dev,
+				     "Timestamp not set in TX BD as expected\n");
+		return;
+	}
 
-	desc_ptp = macb_ptp_desc(queue->bp, desc);
+	desc_ptp = macb_ptp_desc(bp, desc);
 	/* Unlikely but check */
-	if (!desc_ptp)
-		return -EINVAL;
-	skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-	tx_timestamp = &queue->tx_timestamps[head];
-	tx_timestamp->skb = skb;
+	if (!desc_ptp) {
+		dev_warn_ratelimited(&bp->pdev->dev,
+				     "Timestamp not supported in BD\n");
+		return;
+	}
+
 	/* ensure ts_1/ts_2 is loaded after ctrl (TX_USED check) */
 	dma_rmb();
-	tx_timestamp->desc_ptp.ts_1 = desc_ptp->ts_1;
-	tx_timestamp->desc_ptp.ts_2 = desc_ptp->ts_2;
-	/* move head */
-	smp_store_release(&queue->tx_ts_head,
-			  (head + 1) & (PTP_TS_BUFFER_SIZE - 1));
-
-	schedule_work(&queue->tx_ts_task);
-	return 0;
-}
+	gem_hw_timestamp(bp, desc_ptp->ts_1, desc_ptp->ts_2, &ts);
 
-static void gem_tx_timestamp_flush(struct work_struct *work)
-{
-	struct macb_queue *queue =
-			container_of(work, struct macb_queue, tx_ts_task);
-	unsigned long head, tail;
-	struct gem_tx_ts *tx_ts;
-
-	/* take current head */
-	head = smp_load_acquire(&queue->tx_ts_head);
-	tail = queue->tx_ts_tail;
-
-	while (CIRC_CNT(head, tail, PTP_TS_BUFFER_SIZE)) {
-		tx_ts = &queue->tx_timestamps[tail];
-		gem_tstamp_tx(queue->bp, tx_ts->skb, &tx_ts->desc_ptp);
-		/* cleanup */
-		dev_kfree_skb_any(tx_ts->skb);
-		/* remove old tail */
-		smp_store_release(&queue->tx_ts_tail,
-				  (tail + 1) & (PTP_TS_BUFFER_SIZE - 1));
-		tail = queue->tx_ts_tail;
-	}
+	memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+	shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
+	skb_tstamp_tx(skb, &shhwtstamps);
 }
 
 void gem_ptp_init(struct net_device *dev)
 {
 	struct macb *bp = netdev_priv(dev);
-	struct macb_queue *queue;
-	unsigned int q;
 
 	bp->ptp_clock_info = gem_ptp_caps_template;
 
@@ -384,11 +344,6 @@ void gem_ptp_init(struct net_device *dev)
 	}
 
 	spin_lock_init(&bp->tsu_clk_lock);
-	for (q = 0, queue = bp->queues; q < bp->num_queues; ++q, ++queue) {
-		queue->tx_ts_head = 0;
-		queue->tx_ts_tail = 0;
-		INIT_WORK(&queue->tx_ts_task, gem_tx_timestamp_flush);
-	}
 
 	gem_ptp_init_tsu(bp);