From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: 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(). ... --- net/mac80211/debugfs.c | 709 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 709 insertions(+) create mode 100644 net/mac80211/debugfs.c (limited to 'net/mac80211/debugfs.c') diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c new file mode 100644 index 000000000..dfb9f55e2 --- /dev/null +++ b/net/mac80211/debugfs.c @@ -0,0 +1,709 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mac80211 debugfs for wireless PHYs + * + * Copyright 2007 Johannes Berg + * Copyright 2013-2014 Intel Mobile Communications GmbH + * Copyright (C) 2018 - 2019, 2021-2022 Intel Corporation + */ + +#include +#include +#include +#include "ieee80211_i.h" +#include "driver-ops.h" +#include "rate.h" +#include "debugfs.h" + +#define DEBUGFS_FORMAT_BUFFER_SIZE 100 + +int mac80211_format_buffer(char __user *userbuf, size_t count, + loff_t *ppos, char *fmt, ...) +{ + va_list args; + char buf[DEBUGFS_FORMAT_BUFFER_SIZE]; + int res; + + va_start(args, fmt); + res = vscnprintf(buf, sizeof(buf), fmt, args); + va_end(args); + + return simple_read_from_buffer(userbuf, count, ppos, buf, res); +} + +#define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \ +static ssize_t name## _read(struct file *file, char __user *userbuf, \ + size_t count, loff_t *ppos) \ +{ \ + struct ieee80211_local *local = file->private_data; \ + \ + return mac80211_format_buffer(userbuf, count, ppos, \ + fmt "\n", ##value); \ +} + +#define DEBUGFS_READONLY_FILE_OPS(name) \ +static const struct file_operations name## _ops = { \ + .read = name## _read, \ + .open = simple_open, \ + .llseek = generic_file_llseek, \ +}; + +#define DEBUGFS_READONLY_FILE(name, fmt, value...) \ + DEBUGFS_READONLY_FILE_FN(name, fmt, value) \ + DEBUGFS_READONLY_FILE_OPS(name) + +#define DEBUGFS_ADD(name) \ + debugfs_create_file(#name, 0400, phyd, local, &name## _ops) + +#define DEBUGFS_ADD_MODE(name, mode) \ + debugfs_create_file(#name, mode, phyd, local, &name## _ops); + + +DEBUGFS_READONLY_FILE(hw_conf, "%x", + local->hw.conf.flags); +DEBUGFS_READONLY_FILE(user_power, "%d", + local->user_power_level); +DEBUGFS_READONLY_FILE(power, "%d", + local->hw.conf.power_level); +DEBUGFS_READONLY_FILE(total_ps_buffered, "%d", + local->total_ps_buffered); +DEBUGFS_READONLY_FILE(wep_iv, "%#08x", + local->wep_iv & 0xffffff); +DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s", + local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver"); + +static ssize_t aqm_read(struct file *file, + char __user *user_buf, + size_t count, + loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + struct fq *fq = &local->fq; + char buf[200]; + int len = 0; + + spin_lock_bh(&local->fq.lock); + rcu_read_lock(); + + len = scnprintf(buf, sizeof(buf), + "access name value\n" + "R fq_flows_cnt %u\n" + "R fq_backlog %u\n" + "R fq_overlimit %u\n" + "R fq_overmemory %u\n" + "R fq_collisions %u\n" + "R fq_memory_usage %u\n" + "RW fq_memory_limit %u\n" + "RW fq_limit %u\n" + "RW fq_quantum %u\n", + fq->flows_cnt, + fq->backlog, + fq->overmemory, + fq->overlimit, + fq->collisions, + fq->memory_usage, + fq->memory_limit, + fq->limit, + fq->quantum); + + rcu_read_unlock(); + spin_unlock_bh(&local->fq.lock); + + return simple_read_from_buffer(user_buf, count, ppos, + buf, len); +} + +static ssize_t aqm_write(struct file *file, + const char __user *user_buf, + size_t count, + loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[100]; + + if (count >= sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, user_buf, count)) + return -EFAULT; + + if (count && buf[count - 1] == '\n') + buf[count - 1] = '\0'; + else + buf[count] = '\0'; + + if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1) + return count; + else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1) + return count; + else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1) + return count; + + return -EINVAL; +} + +static const struct file_operations aqm_ops = { + .write = aqm_write, + .read = aqm_read, + .open = simple_open, + .llseek = default_llseek, +}; + +static ssize_t airtime_flags_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[128] = {}, *pos, *end; + + pos = buf; + end = pos + sizeof(buf) - 1; + + if (local->airtime_flags & AIRTIME_USE_TX) + pos += scnprintf(pos, end - pos, "AIRTIME_TX\t(%lx)\n", + AIRTIME_USE_TX); + if (local->airtime_flags & AIRTIME_USE_RX) + pos += scnprintf(pos, end - pos, "AIRTIME_RX\t(%lx)\n", + AIRTIME_USE_RX); + + return simple_read_from_buffer(user_buf, count, ppos, buf, + strlen(buf)); +} + +static ssize_t airtime_flags_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[16]; + + if (count >= sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, user_buf, count)) + return -EFAULT; + + if (count && buf[count - 1] == '\n') + buf[count - 1] = '\0'; + else + buf[count] = '\0'; + + if (kstrtou16(buf, 0, &local->airtime_flags)) + return -EINVAL; + + return count; +} + +static const struct file_operations airtime_flags_ops = { + .write = airtime_flags_write, + .read = airtime_flags_read, + .open = simple_open, + .llseek = default_llseek, +}; + +static ssize_t aql_pending_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[400]; + int len = 0; + + len = scnprintf(buf, sizeof(buf), + "AC AQL pending\n" + "VO %u us\n" + "VI %u us\n" + "BE %u us\n" + "BK %u us\n" + "total %u us\n", + atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VO]), + atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VI]), + atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BE]), + atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BK]), + atomic_read(&local->aql_total_pending_airtime)); + return simple_read_from_buffer(user_buf, count, ppos, + buf, len); +} + +static const struct file_operations aql_pending_ops = { + .read = aql_pending_read, + .open = simple_open, + .llseek = default_llseek, +}; + +static ssize_t aql_txq_limit_read(struct file *file, + char __user *user_buf, + size_t count, + loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[400]; + int len = 0; + + len = scnprintf(buf, sizeof(buf), + "AC AQL limit low AQL limit high\n" + "VO %u %u\n" + "VI %u %u\n" + "BE %u %u\n" + "BK %u %u\n", + local->aql_txq_limit_low[IEEE80211_AC_VO], + local->aql_txq_limit_high[IEEE80211_AC_VO], + local->aql_txq_limit_low[IEEE80211_AC_VI], + local->aql_txq_limit_high[IEEE80211_AC_VI], + local->aql_txq_limit_low[IEEE80211_AC_BE], + local->aql_txq_limit_high[IEEE80211_AC_BE], + local->aql_txq_limit_low[IEEE80211_AC_BK], + local->aql_txq_limit_high[IEEE80211_AC_BK]); + return simple_read_from_buffer(user_buf, count, ppos, + buf, len); +} + +static ssize_t aql_txq_limit_write(struct file *file, + const char __user *user_buf, + size_t count, + loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[100]; + u32 ac, q_limit_low, q_limit_high, q_limit_low_old, q_limit_high_old; + struct sta_info *sta; + + if (count >= sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, user_buf, count)) + return -EFAULT; + + if (count && buf[count - 1] == '\n') + buf[count - 1] = '\0'; + else + buf[count] = '\0'; + + if (sscanf(buf, "%u %u %u", &ac, &q_limit_low, &q_limit_high) != 3) + return -EINVAL; + + if (ac >= IEEE80211_NUM_ACS) + return -EINVAL; + + q_limit_low_old = local->aql_txq_limit_low[ac]; + q_limit_high_old = local->aql_txq_limit_high[ac]; + + local->aql_txq_limit_low[ac] = q_limit_low; + local->aql_txq_limit_high[ac] = q_limit_high; + + mutex_lock(&local->sta_mtx); + list_for_each_entry(sta, &local->sta_list, list) { + /* If a sta has customized queue limits, keep it */ + if (sta->airtime[ac].aql_limit_low == q_limit_low_old && + sta->airtime[ac].aql_limit_high == q_limit_high_old) { + sta->airtime[ac].aql_limit_low = q_limit_low; + sta->airtime[ac].aql_limit_high = q_limit_high; + } + } + mutex_unlock(&local->sta_mtx); + return count; +} + +static const struct file_operations aql_txq_limit_ops = { + .write = aql_txq_limit_write, + .read = aql_txq_limit_read, + .open = simple_open, + .llseek = default_llseek, +}; + +static ssize_t aql_enable_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + char buf[3]; + int len; + + len = scnprintf(buf, sizeof(buf), "%d\n", + !static_key_false(&aql_disable.key)); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +} + +static ssize_t aql_enable_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + bool aql_disabled = static_key_false(&aql_disable.key); + char buf[3]; + size_t len; + + if (count > sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, user_buf, count)) + return -EFAULT; + + buf[sizeof(buf) - 1] = '\0'; + len = strlen(buf); + if (len > 0 && buf[len - 1] == '\n') + buf[len - 1] = 0; + + if (buf[0] == '0' && buf[1] == '\0') { + if (!aql_disabled) + static_branch_inc(&aql_disable); + } else if (buf[0] == '1' && buf[1] == '\0') { + if (aql_disabled) + static_branch_dec(&aql_disable); + } else { + return -EINVAL; + } + + return count; +} + +static const struct file_operations aql_enable_ops = { + .write = aql_enable_write, + .read = aql_enable_read, + .open = simple_open, + .llseek = default_llseek, +}; + +static ssize_t force_tx_status_read(struct file *file, + char __user *user_buf, + size_t count, + loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[3]; + int len = 0; + + len = scnprintf(buf, sizeof(buf), "%d\n", (int)local->force_tx_status); + + return simple_read_from_buffer(user_buf, count, ppos, + buf, len); +} + +static ssize_t force_tx_status_write(struct file *file, + const char __user *user_buf, + size_t count, + loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[3]; + + if (count >= sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, user_buf, count)) + return -EFAULT; + + if (count && buf[count - 1] == '\n') + buf[count - 1] = '\0'; + else + buf[count] = '\0'; + + if (buf[0] == '0' && buf[1] == '\0') + local->force_tx_status = 0; + else if (buf[0] == '1' && buf[1] == '\0') + local->force_tx_status = 1; + else + return -EINVAL; + + return count; +} + +static const struct file_operations force_tx_status_ops = { + .write = force_tx_status_write, + .read = force_tx_status_read, + .open = simple_open, + .llseek = default_llseek, +}; + +#ifdef CONFIG_PM +static ssize_t reset_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + int ret; + + rtnl_lock(); + wiphy_lock(local->hw.wiphy); + __ieee80211_suspend(&local->hw, NULL); + ret = __ieee80211_resume(&local->hw); + wiphy_unlock(local->hw.wiphy); + + if (ret) + cfg80211_shutdown_all_interfaces(local->hw.wiphy); + + rtnl_unlock(); + + return count; +} + +static const struct file_operations reset_ops = { + .write = reset_write, + .open = simple_open, + .llseek = noop_llseek, +}; +#endif + +static const char *hw_flag_names[] = { +#define FLAG(F) [IEEE80211_HW_##F] = #F + FLAG(HAS_RATE_CONTROL), + FLAG(RX_INCLUDES_FCS), + FLAG(HOST_BROADCAST_PS_BUFFERING), + FLAG(SIGNAL_UNSPEC), + FLAG(SIGNAL_DBM), + FLAG(NEED_DTIM_BEFORE_ASSOC), + FLAG(SPECTRUM_MGMT), + FLAG(AMPDU_AGGREGATION), + FLAG(SUPPORTS_PS), + FLAG(PS_NULLFUNC_STACK), + FLAG(SUPPORTS_DYNAMIC_PS), + FLAG(MFP_CAPABLE), + FLAG(WANT_MONITOR_VIF), + FLAG(NO_AUTO_VIF), + FLAG(SW_CRYPTO_CONTROL), + FLAG(SUPPORT_FAST_XMIT), + FLAG(REPORTS_TX_ACK_STATUS), + FLAG(CONNECTION_MONITOR), + FLAG(QUEUE_CONTROL), + FLAG(SUPPORTS_PER_STA_GTK), + FLAG(AP_LINK_PS), + FLAG(TX_AMPDU_SETUP_IN_HW), + FLAG(SUPPORTS_RC_TABLE), + FLAG(P2P_DEV_ADDR_FOR_INTF), + FLAG(TIMING_BEACON_ONLY), + FLAG(SUPPORTS_HT_CCK_RATES), + FLAG(CHANCTX_STA_CSA), + FLAG(SUPPORTS_CLONED_SKBS), + FLAG(SINGLE_SCAN_ON_ALL_BANDS), + FLAG(TDLS_WIDER_BW), + FLAG(SUPPORTS_AMSDU_IN_AMPDU), + FLAG(BEACON_TX_STATUS), + FLAG(NEEDS_UNIQUE_STA_ADDR), + FLAG(SUPPORTS_REORDERING_BUFFER), + FLAG(USES_RSS), + FLAG(TX_AMSDU), + FLAG(TX_FRAG_LIST), + FLAG(REPORTS_LOW_ACK), + FLAG(SUPPORTS_TX_FRAG), + FLAG(SUPPORTS_TDLS_BUFFER_STA), + FLAG(DEAUTH_NEED_MGD_TX_PREP), + FLAG(DOESNT_SUPPORT_QOS_NDP), + FLAG(BUFF_MMPDU_TXQ), + FLAG(SUPPORTS_VHT_EXT_NSS_BW), + FLAG(STA_MMPDU_TXQ), + FLAG(TX_STATUS_NO_AMPDU_LEN), + FLAG(SUPPORTS_MULTI_BSSID), + FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID), + FLAG(AMPDU_KEYBORDER_SUPPORT), + FLAG(SUPPORTS_TX_ENCAP_OFFLOAD), + FLAG(SUPPORTS_RX_DECAP_OFFLOAD), + FLAG(SUPPORTS_CONC_MON_RX_DECAP), + FLAG(DETECTS_COLOR_COLLISION), + FLAG(MLO_MCAST_MULTI_LINK_TX), +#undef FLAG +}; + +static ssize_t hwflags_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS; + char *buf = kzalloc(bufsz, GFP_KERNEL); + char *pos = buf, *end = buf + bufsz - 1; + ssize_t rv; + int i; + + if (!buf) + return -ENOMEM; + + /* fail compilation if somebody adds or removes + * a flag without updating the name array above + */ + BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS); + + for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) { + if (test_bit(i, local->hw.flags)) + pos += scnprintf(pos, end - pos, "%s\n", + hw_flag_names[i]); + } + + rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); + kfree(buf); + return rv; +} + +static ssize_t misc_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + /* Max len of each line is 16 characters, plus 9 for 'pending:\n' */ + size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9; + char *buf; + char *pos, *end; + ssize_t rv; + int i; + int ln; + + buf = kzalloc(bufsz, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + pos = buf; + end = buf + bufsz - 1; + + pos += scnprintf(pos, end - pos, "pending:\n"); + + for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { + ln = skb_queue_len(&local->pending[i]); + pos += scnprintf(pos, end - pos, "[%i] %d\n", + i, ln); + } + + rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); + kfree(buf); + return rv; +} + +static ssize_t queues_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + unsigned long flags; + char buf[IEEE80211_MAX_QUEUES * 20]; + int q, res = 0; + + spin_lock_irqsave(&local->queue_stop_reason_lock, flags); + for (q = 0; q < local->hw.queues; q++) + res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, + local->queue_stop_reasons[q], + skb_queue_len(&local->pending[q])); + spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); + + return simple_read_from_buffer(user_buf, count, ppos, buf, res); +} + +DEBUGFS_READONLY_FILE_OPS(hwflags); +DEBUGFS_READONLY_FILE_OPS(queues); +DEBUGFS_READONLY_FILE_OPS(misc); + +/* statistics stuff */ + +static ssize_t format_devstat_counter(struct ieee80211_local *local, + char __user *userbuf, + size_t count, loff_t *ppos, + int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, + int buflen)) +{ + struct ieee80211_low_level_stats stats; + char buf[20]; + int res; + + rtnl_lock(); + res = drv_get_stats(local, &stats); + rtnl_unlock(); + if (res) + return res; + res = printvalue(&stats, buf, sizeof(buf)); + return simple_read_from_buffer(userbuf, count, ppos, buf, res); +} + +#define DEBUGFS_DEVSTATS_FILE(name) \ +static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ + char *buf, int buflen) \ +{ \ + return scnprintf(buf, buflen, "%u\n", stats->name); \ +} \ +static ssize_t stats_ ##name## _read(struct file *file, \ + char __user *userbuf, \ + size_t count, loff_t *ppos) \ +{ \ + return format_devstat_counter(file->private_data, \ + userbuf, \ + count, \ + ppos, \ + print_devstats_##name); \ +} \ + \ +static const struct file_operations stats_ ##name## _ops = { \ + .read = stats_ ##name## _read, \ + .open = simple_open, \ + .llseek = generic_file_llseek, \ +}; + +#ifdef CONFIG_MAC80211_DEBUG_COUNTERS +#define DEBUGFS_STATS_ADD(name) \ + debugfs_create_u32(#name, 0400, statsd, &local->name); +#endif +#define DEBUGFS_DEVSTATS_ADD(name) \ + debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); + +DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); +DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); +DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); +DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); + +void debugfs_hw_add(struct ieee80211_local *local) +{ + struct dentry *phyd = local->hw.wiphy->debugfsdir; + struct dentry *statsd; + + if (!phyd) + return; + + local->debugfs.keys = debugfs_create_dir("keys", phyd); + + DEBUGFS_ADD(total_ps_buffered); + DEBUGFS_ADD(wep_iv); + DEBUGFS_ADD(rate_ctrl_alg); + DEBUGFS_ADD(queues); + DEBUGFS_ADD(misc); +#ifdef CONFIG_PM + DEBUGFS_ADD_MODE(reset, 0200); +#endif + DEBUGFS_ADD(hwflags); + DEBUGFS_ADD(user_power); + DEBUGFS_ADD(power); + DEBUGFS_ADD(hw_conf); + DEBUGFS_ADD_MODE(force_tx_status, 0600); + DEBUGFS_ADD_MODE(aql_enable, 0600); + DEBUGFS_ADD(aql_pending); + DEBUGFS_ADD_MODE(aqm, 0600); + + DEBUGFS_ADD_MODE(airtime_flags, 0600); + + DEBUGFS_ADD(aql_txq_limit); + debugfs_create_u32("aql_threshold", 0600, + phyd, &local->aql_threshold); + + statsd = debugfs_create_dir("statistics", phyd); + + /* if the dir failed, don't put all the other things into the root! */ + if (!statsd) + return; + +#ifdef CONFIG_MAC80211_DEBUG_COUNTERS + DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount); + DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount); + DEBUGFS_STATS_ADD(dot11FailedCount); + DEBUGFS_STATS_ADD(dot11RetryCount); + DEBUGFS_STATS_ADD(dot11MultipleRetryCount); + DEBUGFS_STATS_ADD(dot11FrameDuplicateCount); + DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount); + DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount); + DEBUGFS_STATS_ADD(dot11TransmittedFrameCount); + DEBUGFS_STATS_ADD(tx_handlers_drop); + DEBUGFS_STATS_ADD(tx_handlers_queued); + DEBUGFS_STATS_ADD(tx_handlers_drop_wep); + DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); + DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); + DEBUGFS_STATS_ADD(rx_handlers_drop); + DEBUGFS_STATS_ADD(rx_handlers_queued); + DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); + DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); + DEBUGFS_STATS_ADD(tx_expand_skb_head); + DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); + DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag); + DEBUGFS_STATS_ADD(rx_handlers_fragments); + DEBUGFS_STATS_ADD(tx_status_drop); +#endif + DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); + DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); + DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); + DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); +} -- cgit v1.2.3