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, 723 insertions, 0 deletions

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c
new file mode 100644
index 000000000..f2395309e
--- /dev/null
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c
@@ -0,0 +1,723 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+	Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+	<http://rt2x00.serialmonkey.com>
+
+ */
+
+/*
+	Module: rt2x00lib
+	Abstract: rt2x00 debugfs specific routines.
+ */
+
+#include <linux/debugfs.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+
+#include "rt2x00.h"
+#include "rt2x00lib.h"
+#include "rt2x00dump.h"
+
+#define MAX_LINE_LENGTH 64
+
+struct rt2x00debug_crypto {
+	unsigned long success;
+	unsigned long icv_error;
+	unsigned long mic_error;
+	unsigned long key_error;
+};
+
+struct rt2x00debug_intf {
+	/*
+	 * Pointer to driver structure where
+	 * this debugfs entry belongs to.
+	 */
+	struct rt2x00_dev *rt2x00dev;
+
+	/*
+	 * Reference to the rt2x00debug structure
+	 * which can be used to communicate with
+	 * the registers.
+	 */
+	const struct rt2x00debug *debug;
+
+	/*
+	 * Debugfs entries for:
+	 * - driver folder
+	 *   - driver file
+	 *   - chipset file
+	 *   - device state flags file
+	 *   - device capability flags file
+	 *   - hardware restart file
+	 *   - register folder
+	 *     - csr offset/value files
+	 *     - eeprom offset/value files
+	 *     - bbp offset/value files
+	 *     - rf offset/value files
+	 *     - rfcsr offset/value files
+	 *   - queue folder
+	 *     - frame dump file
+	 *     - queue stats file
+	 *     - crypto stats file
+	 */
+	struct dentry *driver_folder;
+
+	/*
+	 * The frame dump file only allows a single reader,
+	 * so we need to store the current state here.
+	 */
+	unsigned long frame_dump_flags;
+#define FRAME_DUMP_FILE_OPEN	1
+
+	/*
+	 * We queue each frame before dumping it to the user,
+	 * per read command we will pass a single skb structure
+	 * so we should be prepared to queue multiple sk buffers
+	 * before sending it to userspace.
+	 */
+	struct sk_buff_head frame_dump_skbqueue;
+	wait_queue_head_t frame_dump_waitqueue;
+
+	/*
+	 * HW crypto statistics.
+	 * All statistics are stored separately per cipher type.
+	 */
+	struct rt2x00debug_crypto crypto_stats[CIPHER_MAX];
+
+	/*
+	 * Driver and chipset files will use a data buffer
+	 * that has been created in advance. This will simplify
+	 * the code since we can use the debugfs functions.
+	 */
+	struct debugfs_blob_wrapper driver_blob;
+	struct debugfs_blob_wrapper chipset_blob;
+
+	/*
+	 * Requested offset for each register type.
+	 */
+	unsigned int offset_csr;
+	unsigned int offset_eeprom;
+	unsigned int offset_bbp;
+	unsigned int offset_rf;
+	unsigned int offset_rfcsr;
+};
+
+void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
+			       struct rxdone_entry_desc *rxdesc)
+{
+	struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
+	enum cipher cipher = rxdesc->cipher;
+	enum rx_crypto status = rxdesc->cipher_status;
+
+	if (cipher == CIPHER_TKIP_NO_MIC)
+		cipher = CIPHER_TKIP;
+	if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX)
+		return;
+
+	/* Remove CIPHER_NONE index */
+	cipher--;
+
+	intf->crypto_stats[cipher].success += (status == RX_CRYPTO_SUCCESS);
+	intf->crypto_stats[cipher].icv_error += (status == RX_CRYPTO_FAIL_ICV);
+	intf->crypto_stats[cipher].mic_error += (status == RX_CRYPTO_FAIL_MIC);
+	intf->crypto_stats[cipher].key_error += (status == RX_CRYPTO_FAIL_KEY);
+}
+
+void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
+			    enum rt2x00_dump_type type, struct queue_entry *entry)
+{
+	struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
+	struct sk_buff *skb = entry->skb;
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
+	struct sk_buff *skbcopy;
+	struct rt2x00dump_hdr *dump_hdr;
+	struct timespec64 timestamp;
+	u32 data_len;
+
+	if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
+		return;
+
+	ktime_get_ts64(&timestamp);
+
+	if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
+		rt2x00_dbg(rt2x00dev, "txrx dump queue length exceeded\n");
+		return;
+	}
+
+	data_len = skb->len;
+	if (skbdesc->flags & SKBDESC_DESC_IN_SKB)
+		data_len -= skbdesc->desc_len;
+
+	skbcopy = alloc_skb(sizeof(*dump_hdr) + skbdesc->desc_len + data_len,
+			    GFP_ATOMIC);
+	if (!skbcopy) {
+		rt2x00_dbg(rt2x00dev, "Failed to copy skb for dump\n");
+		return;
+	}
+
+	dump_hdr = skb_put(skbcopy, sizeof(*dump_hdr));
+	dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION);
+	dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr));
+	dump_hdr->desc_length = cpu_to_le32(skbdesc->desc_len);
+	dump_hdr->data_length = cpu_to_le32(data_len);
+	dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt);
+	dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf);
+	dump_hdr->chip_rev = cpu_to_le16(rt2x00dev->chip.rev);
+	dump_hdr->type = cpu_to_le16(type);
+	dump_hdr->queue_index = entry->queue->qid;
+	dump_hdr->entry_index = entry->entry_idx;
+	dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
+	dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_nsec /
+					       NSEC_PER_USEC);
+
+	if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
+		skb_put_data(skbcopy, skbdesc->desc, skbdesc->desc_len);
+	skb_put_data(skbcopy, skb->data, skb->len);
+
+	skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy);
+	wake_up_interruptible(&intf->frame_dump_waitqueue);
+
+	/*
+	 * Verify that the file has not been closed while we were working.
+	 */
+	if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
+		skb_queue_purge(&intf->frame_dump_skbqueue);
+}
+EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame);
+
+static int rt2x00debug_file_open(struct inode *inode, struct file *file)
+{
+	struct rt2x00debug_intf *intf = inode->i_private;
+
+	file->private_data = inode->i_private;
+
+	if (!try_module_get(intf->debug->owner))
+		return -EBUSY;
+
+	return 0;
+}
+
+static int rt2x00debug_file_release(struct inode *inode, struct file *file)
+{
+	struct rt2x00debug_intf *intf = file->private_data;
+
+	module_put(intf->debug->owner);
+
+	return 0;
+}
+
+static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
+{
+	struct rt2x00debug_intf *intf = inode->i_private;
+	int retval;
+
+	retval = rt2x00debug_file_open(inode, file);
+	if (retval)
+		return retval;
+
+	if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
+		rt2x00debug_file_release(inode, file);
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
+{
+	struct rt2x00debug_intf *intf = inode->i_private;
+
+	skb_queue_purge(&intf->frame_dump_skbqueue);
+
+	clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);
+
+	return rt2x00debug_file_release(inode, file);
+}
+
+static ssize_t rt2x00debug_read_queue_dump(struct file *file,
+					   char __user *buf,
+					   size_t length,
+					   loff_t *offset)
+{
+	struct rt2x00debug_intf *intf = file->private_data;
+	struct sk_buff *skb;
+	size_t status;
+	int retval;
+
+	if (file->f_flags & O_NONBLOCK)
+		return -EAGAIN;
+
+	retval =
+	    wait_event_interruptible(intf->frame_dump_waitqueue,
+				     (skb =
+				     skb_dequeue(&intf->frame_dump_skbqueue)));
+	if (retval)
+		return retval;
+
+	status = min_t(size_t, skb->len, length);
+	if (copy_to_user(buf, skb->data, status)) {
+		status = -EFAULT;
+		goto exit;
+	}
+
+	*offset += status;
+
+exit:
+	kfree_skb(skb);
+
+	return status;
+}
+
+static __poll_t rt2x00debug_poll_queue_dump(struct file *file,
+						poll_table *wait)
+{
+	struct rt2x00debug_intf *intf = file->private_data;
+
+	poll_wait(file, &intf->frame_dump_waitqueue, wait);
+
+	if (!skb_queue_empty(&intf->frame_dump_skbqueue))
+		return EPOLLOUT | EPOLLWRNORM;
+
+	return 0;
+}
+
+static const struct file_operations rt2x00debug_fop_queue_dump = {
+	.owner		= THIS_MODULE,
+	.read		= rt2x00debug_read_queue_dump,
+	.poll		= rt2x00debug_poll_queue_dump,
+	.open		= rt2x00debug_open_queue_dump,
+	.release	= rt2x00debug_release_queue_dump,
+	.llseek		= default_llseek,
+};
+
+static ssize_t rt2x00debug_read_queue_stats(struct file *file,
+					    char __user *buf,
+					    size_t length,
+					    loff_t *offset)
+{
+	struct rt2x00debug_intf *intf = file->private_data;
+	struct data_queue *queue;
+	unsigned long irqflags;
+	unsigned int lines = 1 + intf->rt2x00dev->data_queues;
+	size_t size;
+	char *data;
+	char *temp;
+
+	if (*offset)
+		return 0;
+
+	data = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	temp = data +
+	    sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
+
+	queue_for_each(intf->rt2x00dev, queue) {
+		spin_lock_irqsave(&queue->index_lock, irqflags);
+
+		temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
+				queue->qid, (unsigned int)queue->flags,
+				queue->count, queue->limit, queue->length,
+				queue->index[Q_INDEX],
+				queue->index[Q_INDEX_DMA_DONE],
+				queue->index[Q_INDEX_DONE]);
+
+		spin_unlock_irqrestore(&queue->index_lock, irqflags);
+	}
+
+	size = strlen(data);
+	size = min(size, length);
+
+	if (copy_to_user(buf, data, size)) {
+		kfree(data);
+		return -EFAULT;
+	}
+
+	kfree(data);
+
+	*offset += size;
+	return size;
+}
+
+static const struct file_operations rt2x00debug_fop_queue_stats = {
+	.owner		= THIS_MODULE,
+	.read		= rt2x00debug_read_queue_stats,
+	.open		= rt2x00debug_file_open,
+	.release	= rt2x00debug_file_release,
+	.llseek		= default_llseek,
+};
+
+#ifdef CONFIG_RT2X00_LIB_CRYPTO
+static ssize_t rt2x00debug_read_crypto_stats(struct file *file,
+					     char __user *buf,
+					     size_t length,
+					     loff_t *offset)
+{
+	struct rt2x00debug_intf *intf = file->private_data;
+	static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" };
+	char *data;
+	char *temp;
+	size_t size;
+	unsigned int i;
+
+	if (*offset)
+		return 0;
+
+	data = kcalloc(1 + CIPHER_MAX, MAX_LINE_LENGTH, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	temp = data;
+	temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n");
+
+	for (i = 0; i < CIPHER_MAX; i++) {
+		temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i],
+				intf->crypto_stats[i].success,
+				intf->crypto_stats[i].icv_error,
+				intf->crypto_stats[i].mic_error,
+				intf->crypto_stats[i].key_error);
+	}
+
+	size = strlen(data);
+	size = min(size, length);
+
+	if (copy_to_user(buf, data, size)) {
+		kfree(data);
+		return -EFAULT;
+	}
+
+	kfree(data);
+
+	*offset += size;
+	return size;
+}
+
+static const struct file_operations rt2x00debug_fop_crypto_stats = {
+	.owner		= THIS_MODULE,
+	.read		= rt2x00debug_read_crypto_stats,
+	.open		= rt2x00debug_file_open,
+	.release	= rt2x00debug_file_release,
+	.llseek		= default_llseek,
+};
+#endif
+
+#define RT2X00DEBUGFS_OPS_READ(__name, __format, __type)	\
+static ssize_t rt2x00debug_read_##__name(struct file *file,	\
+					 char __user *buf,	\
+					 size_t length,		\
+					 loff_t *offset)	\
+{								\
+	struct rt2x00debug_intf *intf = file->private_data;	\
+	const struct rt2x00debug *debug = intf->debug;		\
+	char line[16];						\
+	size_t size;						\
+	unsigned int index = intf->offset_##__name;		\
+	__type value;						\
+								\
+	if (*offset)						\
+		return 0;					\
+								\
+	if (index >= debug->__name.word_count)			\
+		return -EINVAL;					\
+								\
+	index += (debug->__name.word_base /			\
+		  debug->__name.word_size);			\
+								\
+	if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)		\
+		index *= debug->__name.word_size;		\
+								\
+	value = debug->__name.read(intf->rt2x00dev, index);	\
+								\
+	size = sprintf(line, __format, value);			\
+								\
+	return simple_read_from_buffer(buf, length, offset, line, size); \
+}
+
+#define RT2X00DEBUGFS_OPS_WRITE(__name, __type)			\
+static ssize_t rt2x00debug_write_##__name(struct file *file,	\
+					  const char __user *buf,\
+					  size_t length,	\
+					  loff_t *offset)	\
+{								\
+	struct rt2x00debug_intf *intf = file->private_data;	\
+	const struct rt2x00debug *debug = intf->debug;		\
+	char line[17];						\
+	size_t size;						\
+	unsigned int index = intf->offset_##__name;		\
+	__type value;						\
+								\
+	if (*offset)						\
+		return 0;					\
+								\
+	if (index >= debug->__name.word_count)			\
+		return -EINVAL;					\
+								\
+	if (length > sizeof(line))				\
+		return -EINVAL;					\
+								\
+	if (copy_from_user(line, buf, length))			\
+		return -EFAULT;					\
+	line[16] = 0;						\
+						\
+	size = strlen(line);					\
+	value = simple_strtoul(line, NULL, 0);			\
+								\
+	index += (debug->__name.word_base /			\
+		  debug->__name.word_size);			\
+								\
+	if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)		\
+		index *= debug->__name.word_size;		\
+								\
+	debug->__name.write(intf->rt2x00dev, index, value);	\
+								\
+	*offset += size;					\
+	return size;						\
+}
+
+#define RT2X00DEBUGFS_OPS(__name, __format, __type)		\
+RT2X00DEBUGFS_OPS_READ(__name, __format, __type);		\
+RT2X00DEBUGFS_OPS_WRITE(__name, __type);			\
+								\
+static const struct file_operations rt2x00debug_fop_##__name = {\
+	.owner		= THIS_MODULE,				\
+	.read		= rt2x00debug_read_##__name,		\
+	.write		= rt2x00debug_write_##__name,		\
+	.open		= rt2x00debug_file_open,		\
+	.release	= rt2x00debug_file_release,		\
+	.llseek		= generic_file_llseek,			\
+};
+
+RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32);
+RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16);
+RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8);
+RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32);
+RT2X00DEBUGFS_OPS(rfcsr, "0x%.2x\n", u8);
+
+static ssize_t rt2x00debug_read_dev_flags(struct file *file,
+					  char __user *buf,
+					  size_t length,
+					  loff_t *offset)
+{
+	struct rt2x00debug_intf *intf =	file->private_data;
+	char line[16];
+	size_t size;
+
+	if (*offset)
+		return 0;
+
+	size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags);
+
+	return simple_read_from_buffer(buf, length, offset, line, size);
+}
+
+static const struct file_operations rt2x00debug_fop_dev_flags = {
+	.owner		= THIS_MODULE,
+	.read		= rt2x00debug_read_dev_flags,
+	.open		= rt2x00debug_file_open,
+	.release	= rt2x00debug_file_release,
+	.llseek		= default_llseek,
+};
+
+static ssize_t rt2x00debug_read_cap_flags(struct file *file,
+					  char __user *buf,
+					  size_t length,
+					  loff_t *offset)
+{
+	struct rt2x00debug_intf *intf =	file->private_data;
+	char line[16];
+	size_t size;
+
+	if (*offset)
+		return 0;
+
+	size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->cap_flags);
+
+	return simple_read_from_buffer(buf, length, offset, line, size);
+}
+
+static const struct file_operations rt2x00debug_fop_cap_flags = {
+	.owner		= THIS_MODULE,
+	.read		= rt2x00debug_read_cap_flags,
+	.open		= rt2x00debug_file_open,
+	.release	= rt2x00debug_file_release,
+	.llseek		= default_llseek,
+};
+
+static ssize_t rt2x00debug_write_restart_hw(struct file *file,
+					    const char __user *buf,
+					    size_t length,
+					    loff_t *offset)
+{
+	struct rt2x00debug_intf *intf =	file->private_data;
+	struct rt2x00_dev *rt2x00dev = intf->rt2x00dev;
+	static unsigned long last_reset = INITIAL_JIFFIES;
+
+	if (!rt2x00_has_cap_restart_hw(rt2x00dev))
+		return -EOPNOTSUPP;
+
+	if (time_before(jiffies, last_reset + msecs_to_jiffies(2000)))
+		return -EBUSY;
+
+	last_reset = jiffies;
+
+	ieee80211_restart_hw(rt2x00dev->hw);
+	return length;
+}
+
+static const struct file_operations rt2x00debug_restart_hw = {
+	.owner = THIS_MODULE,
+	.write = rt2x00debug_write_restart_hw,
+	.open = simple_open,
+	.llseek = generic_file_llseek,
+};
+
+static void rt2x00debug_create_file_driver(const char *name,
+					   struct rt2x00debug_intf *intf,
+					   struct debugfs_blob_wrapper *blob)
+{
+	char *data;
+
+	data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL);
+	if (!data)
+		return;
+
+	blob->data = data;
+	data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name);
+	data += sprintf(data, "version:\t%s\n", DRV_VERSION);
+	blob->size = strlen(blob->data);
+
+	debugfs_create_blob(name, 0400, intf->driver_folder, blob);
+}
+
+static void rt2x00debug_create_file_chipset(const char *name,
+					    struct rt2x00debug_intf *intf,
+					    struct debugfs_blob_wrapper *blob)
+{
+	const struct rt2x00debug *debug = intf->debug;
+	char *data;
+
+	data = kzalloc(9 * MAX_LINE_LENGTH, GFP_KERNEL);
+	if (!data)
+		return;
+
+	blob->data = data;
+	data += sprintf(data, "rt chip:\t%04x\n", intf->rt2x00dev->chip.rt);
+	data += sprintf(data, "rf chip:\t%04x\n", intf->rt2x00dev->chip.rf);
+	data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev);
+	data += sprintf(data, "\n");
+	data += sprintf(data, "register\tbase\twords\twordsize\n");
+#define RT2X00DEBUGFS_SPRINTF_REGISTER(__name)			\
+{								\
+	if (debug->__name.read)					\
+		data += sprintf(data, __stringify(__name)	\
+				"\t%d\t%d\t%d\n",		\
+				debug->__name.word_base,	\
+				debug->__name.word_count,	\
+				debug->__name.word_size);	\
+}
+	RT2X00DEBUGFS_SPRINTF_REGISTER(csr);
+	RT2X00DEBUGFS_SPRINTF_REGISTER(eeprom);
+	RT2X00DEBUGFS_SPRINTF_REGISTER(bbp);
+	RT2X00DEBUGFS_SPRINTF_REGISTER(rf);
+	RT2X00DEBUGFS_SPRINTF_REGISTER(rfcsr);
+#undef RT2X00DEBUGFS_SPRINTF_REGISTER
+
+	blob->size = strlen(blob->data);
+
+	debugfs_create_blob(name, 0400, intf->driver_folder, blob);
+}
+
+void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
+{
+	const struct rt2x00debug *debug = rt2x00dev->ops->debugfs;
+	struct rt2x00debug_intf *intf;
+	struct dentry *queue_folder;
+	struct dentry *register_folder;
+
+	intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL);
+	if (!intf) {
+		rt2x00_err(rt2x00dev, "Failed to allocate debug handler\n");
+		return;
+	}
+
+	intf->debug = debug;
+	intf->rt2x00dev = rt2x00dev;
+	rt2x00dev->debugfs_intf = intf;
+
+	intf->driver_folder =
+	    debugfs_create_dir(intf->rt2x00dev->ops->name,
+			       rt2x00dev->hw->wiphy->debugfsdir);
+
+	rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
+	rt2x00debug_create_file_chipset("chipset", intf, &intf->chipset_blob);
+	debugfs_create_file("dev_flags", 0400, intf->driver_folder, intf,
+			    &rt2x00debug_fop_dev_flags);
+	debugfs_create_file("cap_flags", 0400, intf->driver_folder, intf,
+			    &rt2x00debug_fop_cap_flags);
+	debugfs_create_file("restart_hw", 0200, intf->driver_folder, intf,
+			    &rt2x00debug_restart_hw);
+
+	register_folder = debugfs_create_dir("register", intf->driver_folder);
+
+#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name)		\
+({									\
+	if (debug->__name.read) {					\
+		debugfs_create_u32(__stringify(__name) "_offset", 0600,	\
+				   register_folder,			\
+				   &(__intf)->offset_##__name);		\
+									\
+		debugfs_create_file(__stringify(__name) "_value", 0600,	\
+				    register_folder, (__intf),		\
+				    &rt2x00debug_fop_##__name);		\
+	}								\
+})
+
+	RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
+	RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
+	RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
+	RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
+	RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rfcsr);
+
+#undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
+
+	queue_folder = debugfs_create_dir("queue", intf->driver_folder);
+
+	debugfs_create_file("dump", 0400, queue_folder, intf,
+			    &rt2x00debug_fop_queue_dump);
+
+	skb_queue_head_init(&intf->frame_dump_skbqueue);
+	init_waitqueue_head(&intf->frame_dump_waitqueue);
+
+	debugfs_create_file("queue", 0400, queue_folder, intf,
+			    &rt2x00debug_fop_queue_stats);
+
+#ifdef CONFIG_RT2X00_LIB_CRYPTO
+	if (rt2x00_has_cap_hw_crypto(rt2x00dev))
+		debugfs_create_file("crypto", 0444, queue_folder, intf,
+				    &rt2x00debug_fop_crypto_stats);
+#endif
+
+	return;
+}
+
+void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
+{
+	struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
+
+	if (unlikely(!intf))
+		return;
+
+	skb_queue_purge(&intf->frame_dump_skbqueue);
+
+	debugfs_remove_recursive(intf->driver_folder);
+	kfree(intf->chipset_blob.data);
+	kfree(intf->driver_blob.data);
+	kfree(intf);
+
+	rt2x00dev->debugfs_intf = NULL;
+}