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().
  ...

1 files changed, 56 insertions, 57 deletions

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index 9f6c4f5c0a6c..7cd22d370caa 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -319,24 +319,23 @@ static int enetc_vlan_rx_del_vid(struct net_device *ndev, __be16 prot, u16 vid)
 static void enetc_set_loopback(struct net_device *ndev, bool en)
 {
 	struct enetc_ndev_priv *priv = netdev_priv(ndev);
-	struct enetc_hw *hw = &priv->si->hw;
+	struct enetc_si *si = priv->si;
 	u32 reg;
 
-	reg = enetc_port_rd(hw, ENETC_PM0_IF_MODE);
+	reg = enetc_port_mac_rd(si, ENETC_PM0_IF_MODE);
 	if (reg & ENETC_PM0_IFM_RG) {
 		/* RGMII mode */
 		reg = (reg & ~ENETC_PM0_IFM_RLP) |
 		      (en ? ENETC_PM0_IFM_RLP : 0);
-		enetc_port_wr(hw, ENETC_PM0_IF_MODE, reg);
+		enetc_port_mac_wr(si, ENETC_PM0_IF_MODE, reg);
 	} else {
 		/* assume SGMII mode */
-		reg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG);
+		reg = enetc_port_mac_rd(si, ENETC_PM0_CMD_CFG);
 		reg = (reg & ~ENETC_PM0_CMD_XGLP) |
 		      (en ? ENETC_PM0_CMD_XGLP : 0);
 		reg = (reg & ~ENETC_PM0_CMD_PHY_TX_EN) |
 		      (en ? ENETC_PM0_CMD_PHY_TX_EN : 0);
-		enetc_port_wr(hw, ENETC_PM0_CMD_CFG, reg);
-		enetc_port_wr(hw, ENETC_PM1_CMD_CFG, reg);
+		enetc_port_mac_wr(si, ENETC_PM0_CMD_CFG, reg);
 	}
 }
 
@@ -538,65 +537,50 @@ void enetc_reset_ptcmsdur(struct enetc_hw *hw)
 		enetc_port_wr(hw, ENETC_PTCMSDUR(tc), ENETC_MAC_MAXFRM_SIZE);
 }
 
-static void enetc_configure_port_mac(struct enetc_hw *hw)
+static void enetc_configure_port_mac(struct enetc_si *si)
 {
-	enetc_port_wr(hw, ENETC_PM0_MAXFRM,
-		      ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE));
+	struct enetc_hw *hw = &si->hw;
 
-	enetc_reset_ptcmsdur(hw);
+	enetc_port_mac_wr(si, ENETC_PM0_MAXFRM,
+			  ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE));
 
-	enetc_port_wr(hw, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN |
-		      ENETC_PM0_CMD_TXP	| ENETC_PM0_PROMISC);
+	enetc_reset_ptcmsdur(hw);
 
-	enetc_port_wr(hw, ENETC_PM1_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN |
-		      ENETC_PM0_CMD_TXP	| ENETC_PM0_PROMISC);
+	enetc_port_mac_wr(si, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN |
+			  ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC);
 
 	/* On LS1028A, the MAC RX FIFO defaults to 2, which is too high
 	 * and may lead to RX lock-up under traffic. Set it to 1 instead,
 	 * as recommended by the hardware team.
 	 */
-	enetc_port_wr(hw, ENETC_PM0_RX_FIFO, ENETC_PM0_RX_FIFO_VAL);
+	enetc_port_mac_wr(si, ENETC_PM0_RX_FIFO, ENETC_PM0_RX_FIFO_VAL);
 }
 
-static void enetc_mac_config(struct enetc_hw *hw, phy_interface_t phy_mode)
+static void enetc_mac_config(struct enetc_si *si, phy_interface_t phy_mode)
 {
 	u32 val;
 
 	if (phy_interface_mode_is_rgmii(phy_mode)) {
-		val = enetc_port_rd(hw, ENETC_PM0_IF_MODE);
+		val = enetc_port_mac_rd(si, ENETC_PM0_IF_MODE);
 		val &= ~(ENETC_PM0_IFM_EN_AUTO | ENETC_PM0_IFM_IFMODE_MASK);
 		val |= ENETC_PM0_IFM_IFMODE_GMII | ENETC_PM0_IFM_RG;
-		enetc_port_wr(hw, ENETC_PM0_IF_MODE, val);
+		enetc_port_mac_wr(si, ENETC_PM0_IF_MODE, val);
 	}
 
 	if (phy_mode == PHY_INTERFACE_MODE_USXGMII) {
 		val = ENETC_PM0_IFM_FULL_DPX | ENETC_PM0_IFM_IFMODE_XGMII;
-		enetc_port_wr(hw, ENETC_PM0_IF_MODE, val);
+		enetc_port_mac_wr(si, ENETC_PM0_IF_MODE, val);
 	}
 }
 
-static void enetc_mac_enable(struct enetc_hw *hw, bool en)
+static void enetc_mac_enable(struct enetc_si *si, bool en)
 {
-	u32 val = enetc_port_rd(hw, ENETC_PM0_CMD_CFG);
+	u32 val = enetc_port_mac_rd(si, ENETC_PM0_CMD_CFG);
 
 	val &= ~(ENETC_PM0_TX_EN | ENETC_PM0_RX_EN);
 	val |= en ? (ENETC_PM0_TX_EN | ENETC_PM0_RX_EN) : 0;
 
-	enetc_port_wr(hw, ENETC_PM0_CMD_CFG, val);
-	enetc_port_wr(hw, ENETC_PM1_CMD_CFG, val);
-}
-
-static void enetc_configure_port_pmac(struct enetc_hw *hw)
-{
-	u32 temp;
-
-	/* Set pMAC step lock */
-	temp = enetc_port_rd(hw, ENETC_PFPMR);
-	enetc_port_wr(hw, ENETC_PFPMR,
-		      temp | ENETC_PFPMR_PMACE | ENETC_PFPMR_MWLM);
-
-	temp = enetc_port_rd(hw, ENETC_MMCSR);
-	enetc_port_wr(hw, ENETC_MMCSR, temp | ENETC_MMCSR_ME);
+	enetc_port_mac_wr(si, ENETC_PM0_CMD_CFG, val);
 }
 
 static void enetc_configure_port(struct enetc_pf *pf)
@@ -604,9 +588,7 @@ static void enetc_configure_port(struct enetc_pf *pf)
 	u8 hash_key[ENETC_RSSHASH_KEY_SIZE];
 	struct enetc_hw *hw = &pf->si->hw;
 
-	enetc_configure_port_pmac(hw);
-
-	enetc_configure_port_mac(hw);
+	enetc_configure_port_mac(pf->si);
 
 	enetc_port_si_configure(pf->si);
 
@@ -825,6 +807,9 @@ static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
 		ndev->hw_features |= NETIF_F_RXHASH;
 
 	ndev->priv_flags |= IFF_UNICAST_FLT;
+	ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
+			     NETDEV_XDP_ACT_NDO_XMIT | NETDEV_XDP_ACT_RX_SG |
+			     NETDEV_XDP_ACT_NDO_XMIT_SG;
 
 	if (si->hw_features & ENETC_SI_F_PSFP && !enetc_psfp_enable(priv)) {
 		priv->active_offloads |= ENETC_F_QCI;
@@ -848,8 +833,10 @@ static int enetc_mdio_probe(struct enetc_pf *pf, struct device_node *np)
 		return -ENOMEM;
 
 	bus->name = "Freescale ENETC MDIO Bus";
-	bus->read = enetc_mdio_read;
-	bus->write = enetc_mdio_write;
+	bus->read = enetc_mdio_read_c22;
+	bus->write = enetc_mdio_write_c22;
+	bus->read_c45 = enetc_mdio_read_c45;
+	bus->write_c45 = enetc_mdio_write_c45;
 	bus->parent = dev;
 	mdio_priv = bus->priv;
 	mdio_priv->hw = &pf->si->hw;
@@ -885,8 +872,10 @@ static int enetc_imdio_create(struct enetc_pf *pf)
 		return -ENOMEM;
 
 	bus->name = "Freescale ENETC internal MDIO Bus";
-	bus->read = enetc_mdio_read;
-	bus->write = enetc_mdio_write;
+	bus->read = enetc_mdio_read_c22;
+	bus->write = enetc_mdio_write_c22;
+	bus->read_c45 = enetc_mdio_read_c45;
+	bus->write_c45 = enetc_mdio_write_c45;
 	bus->parent = dev;
 	bus->phy_mask = ~0;
 	mdio_priv = bus->priv;
@@ -994,14 +983,14 @@ static void enetc_pl_mac_config(struct phylink_config *config,
 {
 	struct enetc_pf *pf = phylink_to_enetc_pf(config);
 
-	enetc_mac_config(&pf->si->hw, state->interface);
+	enetc_mac_config(pf->si, state->interface);
 }
 
-static void enetc_force_rgmii_mac(struct enetc_hw *hw, int speed, int duplex)
+static void enetc_force_rgmii_mac(struct enetc_si *si, int speed, int duplex)
 {
 	u32 old_val, val;
 
-	old_val = val = enetc_port_rd(hw, ENETC_PM0_IF_MODE);
+	old_val = val = enetc_port_mac_rd(si, ENETC_PM0_IF_MODE);
 
 	if (speed == SPEED_1000) {
 		val &= ~ENETC_PM0_IFM_SSP_MASK;
@@ -1022,7 +1011,7 @@ static void enetc_force_rgmii_mac(struct enetc_hw *hw, int speed, int duplex)
 	if (val == old_val)
 		return;
 
-	enetc_port_wr(hw, ENETC_PM0_IF_MODE, val);
+	enetc_port_mac_wr(si, ENETC_PM0_IF_MODE, val);
 }
 
 static void enetc_pl_mac_link_up(struct phylink_config *config,
@@ -1034,6 +1023,7 @@ static void enetc_pl_mac_link_up(struct phylink_config *config,
 	u32 pause_off_thresh = 0, pause_on_thresh = 0;
 	u32 init_quanta = 0, refresh_quanta = 0;
 	struct enetc_hw *hw = &pf->si->hw;
+	struct enetc_si *si = pf->si;
 	struct enetc_ndev_priv *priv;
 	u32 rbmr, cmd_cfg;
 	int idx;
@@ -1045,7 +1035,7 @@ static void enetc_pl_mac_link_up(struct phylink_config *config,
 
 	if (!phylink_autoneg_inband(mode) &&
 	    phy_interface_mode_is_rgmii(interface))
-		enetc_force_rgmii_mac(hw, speed, duplex);
+		enetc_force_rgmii_mac(si, speed, duplex);
 
 	/* Flow control */
 	for (idx = 0; idx < priv->num_rx_rings; idx++) {
@@ -1081,24 +1071,24 @@ static void enetc_pl_mac_link_up(struct phylink_config *config,
 		pause_off_thresh = 1 * ENETC_MAC_MAXFRM_SIZE;
 	}
 
-	enetc_port_wr(hw, ENETC_PM0_PAUSE_QUANTA, init_quanta);
-	enetc_port_wr(hw, ENETC_PM1_PAUSE_QUANTA, init_quanta);
-	enetc_port_wr(hw, ENETC_PM0_PAUSE_THRESH, refresh_quanta);
-	enetc_port_wr(hw, ENETC_PM1_PAUSE_THRESH, refresh_quanta);
+	enetc_port_mac_wr(si, ENETC_PM0_PAUSE_QUANTA, init_quanta);
+	enetc_port_mac_wr(si, ENETC_PM0_PAUSE_THRESH, refresh_quanta);
 	enetc_port_wr(hw, ENETC_PPAUONTR, pause_on_thresh);
 	enetc_port_wr(hw, ENETC_PPAUOFFTR, pause_off_thresh);
 
-	cmd_cfg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG);
+	cmd_cfg = enetc_port_mac_rd(si, ENETC_PM0_CMD_CFG);
 
 	if (rx_pause)
 		cmd_cfg &= ~ENETC_PM0_PAUSE_IGN;
 	else
 		cmd_cfg |= ENETC_PM0_PAUSE_IGN;
 
-	enetc_port_wr(hw, ENETC_PM0_CMD_CFG, cmd_cfg);
-	enetc_port_wr(hw, ENETC_PM1_CMD_CFG, cmd_cfg);
+	enetc_port_mac_wr(si, ENETC_PM0_CMD_CFG, cmd_cfg);
+
+	enetc_mac_enable(si, true);
 
-	enetc_mac_enable(hw, true);
+	if (si->hw_features & ENETC_SI_F_QBU)
+		enetc_mm_link_state_update(priv, true);
 }
 
 static void enetc_pl_mac_link_down(struct phylink_config *config,
@@ -1106,8 +1096,15 @@ static void enetc_pl_mac_link_down(struct phylink_config *config,
 				   phy_interface_t interface)
 {
 	struct enetc_pf *pf = phylink_to_enetc_pf(config);
+	struct enetc_si *si = pf->si;
+	struct enetc_ndev_priv *priv;
 
-	enetc_mac_enable(&pf->si->hw, false);
+	priv = netdev_priv(si->ndev);
+
+	if (si->hw_features & ENETC_SI_F_QBU)
+		enetc_mm_link_state_update(priv, false);
+
+	enetc_mac_enable(si, false);
 }
 
 static const struct phylink_mac_ops enetc_mac_phylink_ops = {
@@ -1300,6 +1297,8 @@ static int enetc_pf_probe(struct pci_dev *pdev,
 
 	priv = netdev_priv(ndev);
 
+	mutex_init(&priv->mm_lock);
+
 	enetc_init_si_rings_params(priv);
 
 	err = enetc_alloc_si_resources(priv);