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

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, 499 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/ef100_rep.c b/drivers/net/ethernet/sfc/ef100_rep.c
new file mode 100644
index 000000000..0b3083ef0
--- /dev/null
+++ b/drivers/net/ethernet/sfc/ef100_rep.c
@@ -0,0 +1,499 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2019 Solarflare Communications Inc.
+ * Copyright 2020-2022 Xilinx Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+
+#include <linux/rhashtable.h>
+#include "ef100_rep.h"
+#include "ef100_netdev.h"
+#include "ef100_nic.h"
+#include "mae.h"
+#include "rx_common.h"
+#include "tc_bindings.h"
+#include "efx_devlink.h"
+
+#define EFX_EF100_REP_DRIVER	"efx_ef100_rep"
+
+#define EFX_REP_DEFAULT_PSEUDO_RING_SIZE	64
+
+static int efx_ef100_rep_poll(struct napi_struct *napi, int weight);
+
+static int efx_ef100_rep_init_struct(struct efx_nic *efx, struct efx_rep *efv,
+				     unsigned int i)
+{
+	efv->parent = efx;
+	efv->idx = i;
+	INIT_LIST_HEAD(&efv->list);
+	efv->dflt.fw_id = MC_CMD_MAE_ACTION_RULE_INSERT_OUT_ACTION_RULE_ID_NULL;
+	INIT_LIST_HEAD(&efv->dflt.acts.list);
+	INIT_LIST_HEAD(&efv->rx_list);
+	spin_lock_init(&efv->rx_lock);
+	efv->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE |
+			  NETIF_MSG_LINK | NETIF_MSG_IFDOWN |
+			  NETIF_MSG_IFUP | NETIF_MSG_RX_ERR |
+			  NETIF_MSG_TX_ERR | NETIF_MSG_HW;
+	return 0;
+}
+
+static int efx_ef100_rep_open(struct net_device *net_dev)
+{
+	struct efx_rep *efv = netdev_priv(net_dev);
+
+	netif_napi_add(net_dev, &efv->napi, efx_ef100_rep_poll);
+	napi_enable(&efv->napi);
+	return 0;
+}
+
+static int efx_ef100_rep_close(struct net_device *net_dev)
+{
+	struct efx_rep *efv = netdev_priv(net_dev);
+
+	napi_disable(&efv->napi);
+	netif_napi_del(&efv->napi);
+	return 0;
+}
+
+static netdev_tx_t efx_ef100_rep_xmit(struct sk_buff *skb,
+				      struct net_device *dev)
+{
+	struct efx_rep *efv = netdev_priv(dev);
+	struct efx_nic *efx = efv->parent;
+	netdev_tx_t rc;
+
+	/* __ef100_hard_start_xmit() will always return success even in the
+	 * case of TX drops, where it will increment efx's tx_dropped.  The
+	 * efv stats really only count attempted TX, not success/failure.
+	 */
+	atomic64_inc(&efv->stats.tx_packets);
+	atomic64_add(skb->len, &efv->stats.tx_bytes);
+	netif_tx_lock(efx->net_dev);
+	rc = __ef100_hard_start_xmit(skb, efx, dev, efv);
+	netif_tx_unlock(efx->net_dev);
+	return rc;
+}
+
+static int efx_ef100_rep_get_port_parent_id(struct net_device *dev,
+					    struct netdev_phys_item_id *ppid)
+{
+	struct efx_rep *efv = netdev_priv(dev);
+	struct efx_nic *efx = efv->parent;
+	struct ef100_nic_data *nic_data;
+
+	nic_data = efx->nic_data;
+	/* nic_data->port_id is a u8[] */
+	ppid->id_len = sizeof(nic_data->port_id);
+	memcpy(ppid->id, nic_data->port_id, sizeof(nic_data->port_id));
+	return 0;
+}
+
+static int efx_ef100_rep_get_phys_port_name(struct net_device *dev,
+					    char *buf, size_t len)
+{
+	struct efx_rep *efv = netdev_priv(dev);
+	struct efx_nic *efx = efv->parent;
+	struct ef100_nic_data *nic_data;
+	int ret;
+
+	nic_data = efx->nic_data;
+	ret = snprintf(buf, len, "p%upf%uvf%u", efx->port_num,
+		       nic_data->pf_index, efv->idx);
+	if (ret >= len)
+		return -EOPNOTSUPP;
+
+	return 0;
+}
+
+static int efx_ef100_rep_setup_tc(struct net_device *net_dev,
+				  enum tc_setup_type type, void *type_data)
+{
+	struct efx_rep *efv = netdev_priv(net_dev);
+	struct efx_nic *efx = efv->parent;
+
+	if (type == TC_SETUP_CLSFLOWER)
+		return efx_tc_flower(efx, net_dev, type_data, efv);
+	if (type == TC_SETUP_BLOCK)
+		return efx_tc_setup_block(net_dev, efx, type_data, efv);
+
+	return -EOPNOTSUPP;
+}
+
+static void efx_ef100_rep_get_stats64(struct net_device *dev,
+				      struct rtnl_link_stats64 *stats)
+{
+	struct efx_rep *efv = netdev_priv(dev);
+
+	stats->rx_packets = atomic64_read(&efv->stats.rx_packets);
+	stats->tx_packets = atomic64_read(&efv->stats.tx_packets);
+	stats->rx_bytes = atomic64_read(&efv->stats.rx_bytes);
+	stats->tx_bytes = atomic64_read(&efv->stats.tx_bytes);
+	stats->rx_dropped = atomic64_read(&efv->stats.rx_dropped);
+	stats->tx_errors = atomic64_read(&efv->stats.tx_errors);
+}
+
+const struct net_device_ops efx_ef100_rep_netdev_ops = {
+	.ndo_open		= efx_ef100_rep_open,
+	.ndo_stop		= efx_ef100_rep_close,
+	.ndo_start_xmit		= efx_ef100_rep_xmit,
+	.ndo_get_port_parent_id	= efx_ef100_rep_get_port_parent_id,
+	.ndo_get_phys_port_name	= efx_ef100_rep_get_phys_port_name,
+	.ndo_get_stats64	= efx_ef100_rep_get_stats64,
+	.ndo_setup_tc		= efx_ef100_rep_setup_tc,
+};
+
+static void efx_ef100_rep_get_drvinfo(struct net_device *dev,
+				      struct ethtool_drvinfo *drvinfo)
+{
+	strscpy(drvinfo->driver, EFX_EF100_REP_DRIVER, sizeof(drvinfo->driver));
+}
+
+static u32 efx_ef100_rep_ethtool_get_msglevel(struct net_device *net_dev)
+{
+	struct efx_rep *efv = netdev_priv(net_dev);
+
+	return efv->msg_enable;
+}
+
+static void efx_ef100_rep_ethtool_set_msglevel(struct net_device *net_dev,
+					       u32 msg_enable)
+{
+	struct efx_rep *efv = netdev_priv(net_dev);
+
+	efv->msg_enable = msg_enable;
+}
+
+static void efx_ef100_rep_ethtool_get_ringparam(struct net_device *net_dev,
+						struct ethtool_ringparam *ring,
+						struct kernel_ethtool_ringparam *kring,
+						struct netlink_ext_ack *ext_ack)
+{
+	struct efx_rep *efv = netdev_priv(net_dev);
+
+	ring->rx_max_pending = U32_MAX;
+	ring->rx_pending = efv->rx_pring_size;
+}
+
+static int efx_ef100_rep_ethtool_set_ringparam(struct net_device *net_dev,
+					       struct ethtool_ringparam *ring,
+					       struct kernel_ethtool_ringparam *kring,
+					       struct netlink_ext_ack *ext_ack)
+{
+	struct efx_rep *efv = netdev_priv(net_dev);
+
+	if (ring->rx_mini_pending || ring->rx_jumbo_pending || ring->tx_pending)
+		return -EINVAL;
+
+	efv->rx_pring_size = ring->rx_pending;
+	return 0;
+}
+
+static const struct ethtool_ops efx_ef100_rep_ethtool_ops = {
+	.get_drvinfo		= efx_ef100_rep_get_drvinfo,
+	.get_msglevel		= efx_ef100_rep_ethtool_get_msglevel,
+	.set_msglevel		= efx_ef100_rep_ethtool_set_msglevel,
+	.get_ringparam		= efx_ef100_rep_ethtool_get_ringparam,
+	.set_ringparam		= efx_ef100_rep_ethtool_set_ringparam,
+};
+
+static struct efx_rep *efx_ef100_rep_create_netdev(struct efx_nic *efx,
+						   unsigned int i)
+{
+	struct net_device *net_dev;
+	struct efx_rep *efv;
+	int rc;
+
+	net_dev = alloc_etherdev_mq(sizeof(*efv), 1);
+	if (!net_dev)
+		return ERR_PTR(-ENOMEM);
+
+	efv = netdev_priv(net_dev);
+	rc = efx_ef100_rep_init_struct(efx, efv, i);
+	if (rc)
+		goto fail1;
+	efv->net_dev = net_dev;
+	rtnl_lock();
+	spin_lock_bh(&efx->vf_reps_lock);
+	list_add_tail(&efv->list, &efx->vf_reps);
+	spin_unlock_bh(&efx->vf_reps_lock);
+	if (netif_running(efx->net_dev) && efx->state == STATE_NET_UP) {
+		netif_device_attach(net_dev);
+		netif_carrier_on(net_dev);
+	} else {
+		netif_carrier_off(net_dev);
+		netif_tx_stop_all_queues(net_dev);
+	}
+	rtnl_unlock();
+
+	net_dev->netdev_ops = &efx_ef100_rep_netdev_ops;
+	net_dev->ethtool_ops = &efx_ef100_rep_ethtool_ops;
+	net_dev->min_mtu = EFX_MIN_MTU;
+	net_dev->max_mtu = EFX_MAX_MTU;
+	net_dev->features |= NETIF_F_LLTX;
+	net_dev->hw_features |= NETIF_F_LLTX;
+	return efv;
+fail1:
+	free_netdev(net_dev);
+	return ERR_PTR(rc);
+}
+
+static int efx_ef100_configure_rep(struct efx_rep *efv)
+{
+	struct efx_nic *efx = efv->parent;
+	int rc;
+
+	efv->rx_pring_size = EFX_REP_DEFAULT_PSEUDO_RING_SIZE;
+	/* Look up actual mport ID */
+	rc = efx_mae_lookup_mport(efx, efv->idx, &efv->mport);
+	if (rc)
+		return rc;
+	pci_dbg(efx->pci_dev, "VF %u has mport ID %#x\n", efv->idx, efv->mport);
+	/* mport label should fit in 16 bits */
+	WARN_ON(efv->mport >> 16);
+
+	return efx_tc_configure_default_rule_rep(efv);
+}
+
+static void efx_ef100_deconfigure_rep(struct efx_rep *efv)
+{
+	struct efx_nic *efx = efv->parent;
+
+	efx_tc_deconfigure_default_rule(efx, &efv->dflt);
+}
+
+static void efx_ef100_rep_destroy_netdev(struct efx_rep *efv)
+{
+	struct efx_nic *efx = efv->parent;
+
+	rtnl_lock();
+	spin_lock_bh(&efx->vf_reps_lock);
+	list_del(&efv->list);
+	spin_unlock_bh(&efx->vf_reps_lock);
+	rtnl_unlock();
+	synchronize_rcu();
+	free_netdev(efv->net_dev);
+}
+
+int efx_ef100_vfrep_create(struct efx_nic *efx, unsigned int i)
+{
+	struct efx_rep *efv;
+	int rc;
+
+	efv = efx_ef100_rep_create_netdev(efx, i);
+	if (IS_ERR(efv)) {
+		rc = PTR_ERR(efv);
+		pci_err(efx->pci_dev,
+			"Failed to create representor for VF %d, rc %d\n", i,
+			rc);
+		return rc;
+	}
+	rc = efx_ef100_configure_rep(efv);
+	if (rc) {
+		pci_err(efx->pci_dev,
+			"Failed to configure representor for VF %d, rc %d\n",
+			i, rc);
+		goto fail1;
+	}
+	ef100_rep_set_devlink_port(efv);
+	rc = register_netdev(efv->net_dev);
+	if (rc) {
+		pci_err(efx->pci_dev,
+			"Failed to register representor for VF %d, rc %d\n",
+			i, rc);
+		goto fail2;
+	}
+	pci_dbg(efx->pci_dev, "Representor for VF %d is %s\n", i,
+		efv->net_dev->name);
+	return 0;
+fail2:
+	ef100_rep_unset_devlink_port(efv);
+	efx_ef100_deconfigure_rep(efv);
+fail1:
+	efx_ef100_rep_destroy_netdev(efv);
+	return rc;
+}
+
+void efx_ef100_vfrep_destroy(struct efx_nic *efx, struct efx_rep *efv)
+{
+	struct net_device *rep_dev;
+
+	rep_dev = efv->net_dev;
+	if (!rep_dev)
+		return;
+	netif_dbg(efx, drv, rep_dev, "Removing VF representor\n");
+	unregister_netdev(rep_dev);
+	ef100_rep_unset_devlink_port(efv);
+	efx_ef100_deconfigure_rep(efv);
+	efx_ef100_rep_destroy_netdev(efv);
+}
+
+void efx_ef100_fini_vfreps(struct efx_nic *efx)
+{
+	struct ef100_nic_data *nic_data = efx->nic_data;
+	struct efx_rep *efv, *next;
+
+	if (!nic_data->grp_mae)
+		return;
+
+	list_for_each_entry_safe(efv, next, &efx->vf_reps, list)
+		efx_ef100_vfrep_destroy(efx, efv);
+}
+
+static bool ef100_mport_is_pcie_vnic(struct mae_mport_desc *mport_desc)
+{
+	return mport_desc->mport_type == MAE_MPORT_DESC_MPORT_TYPE_VNIC &&
+	       mport_desc->vnic_client_type == MAE_MPORT_DESC_VNIC_CLIENT_TYPE_FUNCTION;
+}
+
+bool ef100_mport_on_local_intf(struct efx_nic *efx,
+			       struct mae_mport_desc *mport_desc)
+{
+	struct ef100_nic_data *nic_data = efx->nic_data;
+	bool pcie_func;
+
+	pcie_func = ef100_mport_is_pcie_vnic(mport_desc);
+
+	return nic_data->have_local_intf && pcie_func &&
+		     mport_desc->interface_idx == nic_data->local_mae_intf;
+}
+
+bool ef100_mport_is_vf(struct mae_mport_desc *mport_desc)
+{
+	bool pcie_func;
+
+	pcie_func = ef100_mport_is_pcie_vnic(mport_desc);
+	return pcie_func && (mport_desc->vf_idx != MAE_MPORT_DESC_VF_IDX_NULL);
+}
+
+void efx_ef100_init_reps(struct efx_nic *efx)
+{
+	struct ef100_nic_data *nic_data = efx->nic_data;
+	int rc;
+
+	nic_data->have_local_intf = false;
+	rc = efx_mae_enumerate_mports(efx);
+	if (rc)
+		pci_warn(efx->pci_dev,
+			 "Could not enumerate mports (rc=%d), are we admin?",
+			 rc);
+}
+
+void efx_ef100_fini_reps(struct efx_nic *efx)
+{
+	struct efx_mae *mae = efx->mae;
+
+	rhashtable_free_and_destroy(&mae->mports_ht, efx_mae_remove_mport,
+				    NULL);
+}
+
+static int efx_ef100_rep_poll(struct napi_struct *napi, int weight)
+{
+	struct efx_rep *efv = container_of(napi, struct efx_rep, napi);
+	unsigned int read_index;
+	struct list_head head;
+	struct sk_buff *skb;
+	bool need_resched;
+	int spent = 0;
+
+	INIT_LIST_HEAD(&head);
+	/* Grab up to 'weight' pending SKBs */
+	spin_lock_bh(&efv->rx_lock);
+	read_index = efv->write_index;
+	while (spent < weight && !list_empty(&efv->rx_list)) {
+		skb = list_first_entry(&efv->rx_list, struct sk_buff, list);
+		list_del(&skb->list);
+		list_add_tail(&skb->list, &head);
+		spent++;
+	}
+	spin_unlock_bh(&efv->rx_lock);
+	/* Receive them */
+	netif_receive_skb_list(&head);
+	if (spent < weight)
+		if (napi_complete_done(napi, spent)) {
+			spin_lock_bh(&efv->rx_lock);
+			efv->read_index = read_index;
+			/* If write_index advanced while we were doing the
+			 * RX, then storing our read_index won't re-prime the
+			 * fake-interrupt.  In that case, we need to schedule
+			 * NAPI again to consume the additional packet(s).
+			 */
+			need_resched = efv->write_index != read_index;
+			spin_unlock_bh(&efv->rx_lock);
+			if (need_resched)
+				napi_schedule(&efv->napi);
+		}
+	return spent;
+}
+
+void efx_ef100_rep_rx_packet(struct efx_rep *efv, struct efx_rx_buffer *rx_buf)
+{
+	u8 *eh = efx_rx_buf_va(rx_buf);
+	struct sk_buff *skb;
+	bool primed;
+
+	/* Don't allow too many queued SKBs to build up, as they consume
+	 * GFP_ATOMIC memory.  If we overrun, just start dropping.
+	 */
+	if (efv->write_index - READ_ONCE(efv->read_index) > efv->rx_pring_size) {
+		atomic64_inc(&efv->stats.rx_dropped);
+		if (net_ratelimit())
+			netif_dbg(efv->parent, rx_err, efv->net_dev,
+				  "nodesc-dropped packet of length %u\n",
+				  rx_buf->len);
+		return;
+	}
+
+	skb = netdev_alloc_skb(efv->net_dev, rx_buf->len);
+	if (!skb) {
+		atomic64_inc(&efv->stats.rx_dropped);
+		if (net_ratelimit())
+			netif_dbg(efv->parent, rx_err, efv->net_dev,
+				  "noskb-dropped packet of length %u\n",
+				  rx_buf->len);
+		return;
+	}
+	memcpy(skb->data, eh, rx_buf->len);
+	__skb_put(skb, rx_buf->len);
+
+	skb_record_rx_queue(skb, 0); /* rep is single-queue */
+
+	/* Move past the ethernet header */
+	skb->protocol = eth_type_trans(skb, efv->net_dev);
+
+	skb_checksum_none_assert(skb);
+
+	atomic64_inc(&efv->stats.rx_packets);
+	atomic64_add(rx_buf->len, &efv->stats.rx_bytes);
+
+	/* Add it to the rx list */
+	spin_lock_bh(&efv->rx_lock);
+	primed = efv->read_index == efv->write_index;
+	list_add_tail(&skb->list, &efv->rx_list);
+	efv->write_index++;
+	spin_unlock_bh(&efv->rx_lock);
+	/* Trigger rx work */
+	if (primed)
+		napi_schedule(&efv->napi);
+}
+
+struct efx_rep *efx_ef100_find_rep_by_mport(struct efx_nic *efx, u16 mport)
+{
+	struct efx_rep *efv, *out = NULL;
+
+	/* spinlock guards against list mutation while we're walking it;
+	 * but caller must also hold rcu_read_lock() to ensure the netdev
+	 * isn't freed after we drop the spinlock.
+	 */
+	spin_lock_bh(&efx->vf_reps_lock);
+	list_for_each_entry(efv, &efx->vf_reps, list)
+		if (efv->mport == mport) {
+			out = efv;
+			break;
+		}
+	spin_unlock_bh(&efx->vf_reps_lock);
+	return out;
+}