ad51bd9fc5
https://source.android.com/docs/security/bulletin/2023-02-01 CVE-2022-39189 CVE-2022-39842 CVE-2022-41222 CVE-2023-20937 CVE-2023-20938 CVE-2022-0850 * tag 'ASB-2023-02-05_4.19-stable' of https://android.googlesource.com/kernel/common: Linux 4.19.272 usb: host: xhci-plat: add wakeup entry at sysfs ipv6: ensure sane device mtu in tunnels exit: Use READ_ONCE() for all oops/warn limit reads docs: Fix path paste-o for /sys/kernel/warn_count panic: Expose "warn_count" to sysfs panic: Introduce warn_limit panic: Consolidate open-coded panic_on_warn checks exit: Allow oops_limit to be disabled exit: Expose "oops_count" to sysfs exit: Put an upper limit on how often we can oops ia64: make IA64_MCA_RECOVERY bool instead of tristate h8300: Fix build errors from do_exit() to make_task_dead() transition hexagon: Fix function name in die() objtool: Add a missing comma to avoid string concatenation exit: Add and use make_task_dead. panic: unset panic_on_warn inside panic() sysctl: add a new register_sysctl_init() interface dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init ARM: dts: imx: Fix pca9547 i2c-mux node name x86/entry/64: Add instruction suffix to SYSRET x86/asm: Fix an assembler warning with current binutils drm/i915/display: fix compiler warning about array overrun x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL Revert "Input: synaptics - switch touchpad on HP Laptop 15-da3001TU to RMI mode" net/tg3: resolve deadlock in tg3_reset_task() during EEH net: ravb: Fix possible hang if RIS2_QFF1 happen sctp: fail if no bound addresses can be used for a given scope netrom: Fix use-after-free of a listening socket. netfilter: conntrack: fix vtag checks for ABORT/SHUTDOWN_COMPLETE ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() netlink: annotate data races around sk_state netlink: annotate data races around dst_portid and dst_group netlink: annotate data races around nlk->portid netlink: remove hash::nelems check in netlink_insert netfilter: nft_set_rbtree: skip elements in transaction from garbage collection net: fix UaF in netns ops registration error path EDAC/device: Respect any driver-supplied workqueue polling value ARM: 9280/1: mm: fix warning on phys_addr_t to void pointer assignment cifs: Fix oops due to uncleared server->smbd_conn in reconnect smbd: Make upper layer decide when to destroy the transport trace_events_hist: add check for return value of 'create_hist_field' tracing: Make sure trace_printk() can output as soon as it can be used module: Don't wait for GOING modules scsi: hpsa: Fix allocation size for scsi_host_alloc() Bluetooth: hci_sync: cancel cmd_timer if hci_open failed fs: reiserfs: remove useless new_opts in reiserfs_remount perf env: Do not return pointers to local variables block: fix and cleanup bio_check_ro netfilter: conntrack: do not renew entry stuck in tcp SYN_SENT state w1: fix WARNING after calling w1_process() w1: fix deadloop in __w1_remove_master_device() tcp: avoid the lookup process failing to get sk in ehash table dmaengine: xilinx_dma: call of_node_put() when breaking out of for_each_child_of_node() dmaengine: xilinx_dma: Fix devm_platform_ioremap_resource error handling dmaengine: xilinx_dma: program hardware supported buffer length dmaengine: xilinx_dma: commonize DMA copy size calculation HID: betop: check shape of output reports net: macb: fix PTP TX timestamp failure due to packet padding dmaengine: Fix double increment of client_count in dma_chan_get() net: mlx5: eliminate anonymous module_init & module_exit usb: gadget: f_fs: Ensure ep0req is dequeued before free_request usb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait HID: check empty report_list in hid_validate_values() net: mdio: validate parameter addr in mdiobus_get_phy() net: usb: sr9700: Handle negative len wifi: rndis_wlan: Prevent buffer overflow in rndis_query_oid net: nfc: Fix use-after-free in local_cleanup() phy: rockchip-inno-usb2: Fix missing clk_disable_unprepare() in rockchip_usb2phy_power_on() bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation amd-xgbe: Delay AN timeout during KR training amd-xgbe: TX Flow Ctrl Registers are h/w ver dependent affs: initialize fsdata in affs_truncate() IB/hfi1: Fix expected receive setup error exit issues IB/hfi1: Reserve user expected TIDs IB/hfi1: Reject a zero-length user expected buffer tomoyo: fix broken dependency on *.conf.default EDAC/highbank: Fix memory leak in highbank_mc_probe() HID: intel_ish-hid: Add check for ishtp_dma_tx_map ARM: dts: imx6qdl-gw560x: Remove incorrect 'uart-has-rtscts' UPSTREAM: tcp: fix tcp_rmem documentation UPSTREAM: nvmem: core: skip child nodes not matching binding BACKPORT: nvmem: core: Fix a resource leak on error in nvmem_add_cells_from_of() UPSTREAM: sched/eas: Don't update misfit status if the task is pinned BACKPORT: arm64: link with -z norelro for LLD or aarch64-elf UPSTREAM: driver: core: Fix list corruption after device_del() UPSTREAM: coresight: tmc-etr: Fix barrier packet insertion for perf buffer UPSTREAM: f2fs: fix double free of unicode map BACKPORT: net: xfrm: fix memory leak in xfrm_user_policy() UPSTREAM: xfrm/compat: Don't allocate memory with __GFP_ZERO UPSTREAM: xfrm/compat: memset(0) 64-bit padding at right place UPSTREAM: xfrm/compat: Translate by copying XFRMA_UNSPEC attribute UPSTREAM: scsi: ufs: Fix missing brace warning for old compilers UPSTREAM: arm64: vdso32: make vdso32 install conditional UPSTREAM: loop: unset GENHD_FL_NO_PART_SCAN on LOOP_CONFIGURE BACKPORT: drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl() BACKPORT: sched/uclamp: Protect uclamp fast path code with static key BACKPORT: sched/uclamp: Fix initialization of struct uclamp_rq UPSTREAM: coresight: etmv4: Fix CPU power management setup in probe() function UPSTREAM: arm64: vdso: Add --eh-frame-hdr to ldflags BACKPORT: arm64: vdso: Add '-Bsymbolic' to ldflags UPSTREAM: drm/virtio: fix a wait_event condition BACKPORT: sched/topology: Don't try to build empty sched domains BACKPORT: binder: prevent UAF read in print_binder_transaction_log_entry() BACKPORT: copy_process(): don't use ksys_close() on cleanups BACKPORT: arm64: vdso: Remove unnecessary asm-offsets.c definitions UPSTREAM: locking/lockdep, cpu/hotplug: Annotate AP thread Revert "xhci: Add a flag to disable USB3 lpm on a xhci root port level." BACKPORT: mac80211_hwsim: add concurrent channels scanning support over virtio BACKPORT: mac80211_hwsim: add frame transmission support over virtio This allows communication with external entities. BACKPORT: driver core: Skip unnecessary work when device doesn't have sync_state() Linux 4.19.271 x86/fpu: Use _Alignof to avoid undefined behavior in TYPE_ALIGN Revert "ext4: generalize extents status tree search functions" Revert "ext4: add new pending reservation mechanism" Revert "ext4: fix reserved cluster accounting at delayed write time" Revert "ext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline" gsmi: fix null-deref in gsmi_get_variable serial: atmel: fix incorrect baudrate setup serial: pch_uart: Pass correct sg to dma_unmap_sg() usb-storage: apply IGNORE_UAS only for HIKSEMI MD202 on RTL9210 usb: gadget: f_ncm: fix potential NULL ptr deref in ncm_bitrate() usb: gadget: g_webcam: Send color matching descriptor per frame usb: typec: altmodes/displayport: Fix pin assignment calculation usb: typec: altmodes/displayport: Add pin assignment helper usb: host: ehci-fsl: Fix module alias USB: serial: cp210x: add SCALANCE LPE-9000 device id cifs: do not include page data when checking signature mmc: sunxi-mmc: Fix clock refcount imbalance during unbind comedi: adv_pci1760: Fix PWM instruction handling usb: core: hub: disable autosuspend for TI TUSB8041 USB: misc: iowarrior: fix up header size for USB_DEVICE_ID_CODEMERCS_IOW100 USB: serial: option: add Quectel EM05CN modem USB: serial: option: add Quectel EM05CN (SG) modem USB: serial: option: add Quectel EC200U modem USB: serial: option: add Quectel EM05-G (RS) modem USB: serial: option: add Quectel EM05-G (CS) modem USB: serial: option: add Quectel EM05-G (GR) modem prlimit: do_prlimit needs to have a speculation check xhci: Add a flag to disable USB3 lpm on a xhci root port level. xhci: Fix null pointer dereference when host dies usb: xhci: Check endpoint is valid before dereferencing it xhci-pci: set the dma max_seg_size nilfs2: fix general protection fault in nilfs_btree_insert() Add exception protection processing for vd in axi_chan_handle_err function f2fs: let's avoid panic if extent_tree is not created RDMA/srp: Move large values to a new enum for gcc13 net/ethtool/ioctl: return -EOPNOTSUPP if we have no phy stats pNFS/filelayout: Fix coalescing test for single DS ANDROID: usb: f_accessory: Check buffer size when initialised via composite Linux 4.19.270 serial: tegra: Change lower tolerance baud rate limit for tegra20 and tegra30 serial: tegra: Only print FIFO error message when an error occurs tty: serial: tegra: Handle RX transfer in PIO mode if DMA wasn't started Revert "usb: ulpi: defer ulpi_register on ulpi_read_id timeout" efi: fix NULL-deref in init error path arm64: cmpxchg_double*: hazard against entire exchange variable drm/virtio: Fix GEM handle creation UAF x86/resctrl: Fix task CLOSID/RMID update race x86/resctrl: Use task_curr() instead of task_struct->on_cpu to prevent unnecessary IPI iommu/mediatek-v1: Fix an error handling path in mtk_iommu_v1_probe() iommu/mediatek-v1: Add error handle for mtk_iommu_probe net/mlx5: Fix ptp max frequency adjustment range net/mlx5: Rename ptp clock info nfc: pn533: Wait for out_urb's completion in pn533_usb_send_frame() hvc/xen: lock console list traversal regulator: da9211: Use irq handler when ready EDAC/device: Fix period calculation in edac_device_reset_delay_period() x86/boot: Avoid using Intel mnemonics in AT&T syntax asm netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. ext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline ext4: fix reserved cluster accounting at delayed write time ext4: add new pending reservation mechanism ext4: generalize extents status tree search functions ext4: fix uninititialized value in 'ext4_evict_inode' ext4: fix use-after-free in ext4_orphan_cleanup ext4: lost matching-pair of trace in ext4_truncate ext4: fix bug_on in __es_tree_search caused by bad quota inode quota: Factor out setup of quota inode usb: ulpi: defer ulpi_register on ulpi_read_id timeout kest.pl: Fix grub2 menu handling for rebooting ktest.pl: Fix incorrect reboot for grub2bls ktest: introduce grub2bls REBOOT_TYPE option ktest: cleanup get_grub_index ktest: introduce _get_grub_index ktest: Add support for meta characters in GRUB_MENU ALSA: hda/hdmi: fix failures at PCM open on Intel ICL and later wifi: wilc1000: sdio: fix module autoloading ipv6: raw: Deduct extension header length in rawv6_push_pending_frames platform/x86: sony-laptop: Don't turn off 0x153 keyboard backlight during probe cifs: Fix uninitialized memory read for smb311 posix symlink create ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF net/ulp: prevent ULP without clone op from entering the LISTEN status s390/percpu: add READ_ONCE() to arch_this_cpu_to_op_simple() perf auxtrace: Fix address filter duplicate symbol selection docs: Fix the docs build with Sphinx 6.0 net: sched: disallow noqueue for qdisc classes driver core: Fix bus_type.match() error handling in __driver_attach() parisc: Align parisc MADV_XXX constants with all other architectures mbcache: Avoid nesting of cache->c_list_lock under bit locks hfs/hfsplus: avoid WARN_ON() for sanity check, use proper error handling hfs/hfsplus: use WARN_ON for sanity check ext4: don't allow journal inode to have encrypt flag riscv: uaccess: fix type of 0 variable on error in get_user() nfsd: fix handling of readdir in v4root vs. mount upcall timeout x86/bugs: Flush IBP in ib_prctl_set() ASoC: Intel: bytcr_rt5640: Add quirk for the Advantech MICA-071 tablet udf: Fix extension of the last extent in the file caif: fix memory leak in cfctrl_linkup_request() usb: rndis_host: Secure rndis_query check against int overflow net: sched: atm: dont intepret cls results when asked to drop RDMA/mlx5: Fix validation of max_rd_atomic caps for DC net: phy: xgmiitorgmii: Fix refcount leak in xgmiitorgmii_probe net: amd-xgbe: add missed tasklet_kill nfc: Fix potential resource leaks qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure bpf: pull before calling skb_postpull_rcsum() SUNRPC: ensure the matching upcall is in-flight upon downcall ext4: fix deadlock due to mbcache entry corruption mbcache: automatically delete entries from cache on freeing ext4: fix race when reusing xattr blocks ext4: unindent codeblock in ext4_xattr_block_set() ext4: remove EA inode entry from mbcache on inode eviction mbcache: add functions to delete entry if unused mbcache: don't reclaim used entries ext4: use kmemdup() to replace kmalloc + memcpy ext4: correct inconsistent error msg in nojournal mode ext4: goto right label 'failed_mount3a' driver core: Set deferred_probe_timeout to a longer default if CONFIG_MODULES is set ravb: Fix "failed to switch device to config mode" message during unbind perf probe: Fix to get the DW_AT_decl_file and DW_AT_call_file as unsinged data perf probe: Use dwarf_attr_integrate as generic DWARF attr accessor dm thin: resume even if in FAIL mode media: s5p-mfc: Fix in register read and write for H264 media: s5p-mfc: Clear workbit to handle error condition media: s5p-mfc: Fix to handle reference queue during finishing btrfs: replace strncpy() with strscpy() btrfs: send: avoid unnecessary backref lookups when finding clone source ext4: allocate extended attribute value in vmalloc area ext4: avoid unaccounted block allocation when expanding inode ext4: initialize quota before expanding inode in setproject ioctl ext4: fix inode leak in ext4_xattr_inode_create() on an error path ext4: avoid BUG_ON when creating xattrs ext4: fix error code return to user-space in ext4_get_branch() ext4: fix corruption when online resizing a 1K bigalloc fs ext4: init quota for 'old.inode' in 'ext4_rename' ext4: fix bug_on in __es_tree_search caused by bad boot loader inode ext4: add helper to check quota inums ext4: fix undefined behavior in bit shift for ext4_check_flag_values ext4: add inode table check in __ext4_get_inode_loc to aovid possible infinite loop drm/vmwgfx: Validate the box size for the snooped cursor drm/connector: send hotplug uevent on connector cleanup device_cgroup: Roll back to original exceptions after copy failure parisc: led: Fix potential null-ptr-deref in start_task() iommu/amd: Fix ivrs_acpihid cmdline parsing code crypto: n2 - add missing hash statesize PCI/sysfs: Fix double free in error path PCI: Fix pci_device_is_present() for VFs by checking PF ipmi: fix use after free in _ipmi_destroy_user() ima: Fix a potential NULL pointer access in ima_restore_measurement_list ipmi: fix long wait in unload when IPMI disconnect md/bitmap: Fix bitmap chunk size overflow issues cifs: fix confusing debug message media: dvb-core: Fix UAF due to refcount races at releasing media: dvb-core: Fix double free in dvb_register_device() ARM: 9256/1: NWFPE: avoid compiler-generated __aeabi_uldivmod tracing: Fix infinite loop in tracing_read_pipe on overflowed print_trace_line x86/microcode/intel: Do not retry microcode reloading on the APs dm cache: set needs_check flag after aborting metadata dm cache: Fix UAF in destroy() dm thin: Fix UAF in run_timer_softirq() dm thin: Use last transaction's pmd->root when commit failed dm cache: Fix ABBA deadlock between shrink_slab and dm_cache_metadata_abort binfmt: Fix error return code in load_elf_fdpic_binary() binfmt: Move install_exec_creds after setup_new_exec to match binfmt_elf selftests: Use optional USERCFLAGS and USERLDFLAGS ARM: ux500: do not directly dereference __iomem ktest.pl minconfig: Unset configs instead of just removing them soc: qcom: Select REMAP_MMIO for LLCC driver media: stv0288: use explicitly signed char SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails tpm: tpm_tis: Add the missed acpi_put_table() to fix memory leak tpm: tpm_crb: Add the missed acpi_put_table() to fix memory leak mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING md: fix a crash in mempool_free pnode: terminate at peers of source ALSA: line6: fix stack overflow in line6_midi_transmit ALSA: line6: correct midi status byte when receiving data from podxt ovl: Use ovl mounter's fsuid and fsgid in ovl_link() hfsplus: fix bug causing custom uid and gid being unable to be assigned with mount HID: plantronics: Additional PIDs for double volume key presses quirk powerpc/rtas: avoid scheduling in rtas_os_term() powerpc/rtas: avoid device tree lookups in rtas_os_term() ata: ahci: Fix PCS quirk application for suspend media: dvbdev: fix refcnt bug media: dvbdev: fix build warning due to comments gcov: add support for checksum field iio: adc: ad_sigma_delta: do not use internal iio_dev lock reiserfs: Add missing calls to reiserfs_security_free() HID: wacom: Ensure bootloader PID is usable in hidraw mode usb: dwc3: core: defer probe on ulpi_read_id timeout pstore: Make sure CONFIG_PSTORE_PMSG selects CONFIG_RT_MUTEXES pstore: Switch pmsg_lock to an rt_mutex to avoid priority inversion ASoC: rt5670: Remove unbalanced pm_runtime_put() ASoC: rockchip: spdif: Add missing clk_disable_unprepare() in rk_spdif_runtime_resume() ASoC: wm8994: Fix potential deadlock ASoC: rockchip: pdm: Add missing clk_disable_unprepare() in rockchip_pdm_runtime_resume() ASoC: mediatek: mt8173-rt5650-rt5514: fix refcount leak in mt8173_rt5650_rt5514_dev_probe() orangefs: Fix kmemleak in orangefs_prepare_debugfs_help_string() drm/sti: Fix return type of sti_{dvo,hda,hdmi}_connector_mode_valid() drm/fsl-dcu: Fix return type of fsl_dcu_drm_connector_mode_valid() clk: st: Fix memory leak in st_of_quadfs_setup() media: si470x: Fix use-after-free in si470x_int_in_callback() mmc: f-sdh30: Add quirks for broken timeout clock capability regulator: core: fix use_count leakage when handling boot-on blk-mq: fix possible memleak when register 'hctx' failed media: dvb-usb: fix memory leak in dvb_usb_adapter_init() media: dvbdev: adopts refcnt to avoid UAF media: dvb-frontends: fix leak of memory fw ppp: associate skb with a device at tx mrp: introduce active flags to prevent UAF when applicant uninit md/raid1: stop mdx_raid1 thread when raid1 array run failed drivers/md/md-bitmap: check the return value of md_bitmap_get_counter() drm/sti: Use drm_mode_copy() s390/lcs: Fix return type of lcs_start_xmit() s390/netiucv: Fix return type of netiucv_tx() s390/ctcm: Fix return type of ctc{mp,}m_tx() drm/amdgpu: Fix type of second parameter in trans_msg() callback igb: Do not free q_vector unless new one was allocated wifi: brcmfmac: Fix potential shift-out-of-bounds in brcmf_fw_alloc_request() hamradio: baycom_epp: Fix return type of baycom_send_packet() net: ethernet: ti: Fix return type of netcp_ndo_start_xmit() bpf: make sure skb->len != 0 when redirecting to a tunneling device ipmi: fix memleak when unload ipmi driver ASoC: codecs: rt298: Add quirk for KBL-R RVP platform wifi: ar5523: Fix use-after-free on ar5523_cmd() timed out wifi: ath9k: verify the expected usb_endpoints are present hfs: fix OOB Read in __hfs_brec_find acct: fix potential integer overflow in encode_comp_t() nilfs2: fix shift-out-of-bounds/overflow in nilfs_sb2_bad_offset() ACPICA: Fix error code path in acpi_ds_call_control_method() fs: jfs: fix shift-out-of-bounds in dbDiscardAG udf: Avoid double brelse() in udf_rename() fs: jfs: fix shift-out-of-bounds in dbAllocAG binfmt_misc: fix shift-out-of-bounds in check_special_flags net: stream: purge sk_error_queue in sk_stream_kill_queues() myri10ge: Fix an error handling path in myri10ge_probe() rxrpc: Fix missing unlock in rxrpc_do_sendmsg() net_sched: reject TCF_EM_SIMPLE case for complex ematch module skbuff: Account for tail adjustment during pull operations openvswitch: Fix flow lookup to use unmasked key rtc: mxc_v2: Add missing clk_disable_unprepare() r6040: Fix kmemleak in probe and remove nfc: pn533: Clear nfc_target before being used mISDN: hfcmulti: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave() mISDN: hfcpci: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave() mISDN: hfcsusb: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave() nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure rtc: st-lpc: Add missing clk_disable_unprepare in st_rtc_probe() selftests/powerpc: Fix resource leaks powerpc/hv-gpci: Fix hv_gpci event list powerpc/83xx/mpc832x_rdb: call platform_device_put() in error case in of_fsl_spi_probe() powerpc/perf: callchain validate kernel stack pointer bounds powerpc/xive: add missing iounmap() in error path in xive_spapr_populate_irq_data() cxl: Fix refcount leak in cxl_calc_capp_routing powerpc/52xx: Fix a resource leak in an error handling path macintosh/macio-adb: check the return value of ioremap() macintosh: fix possible memory leak in macio_add_one_device() iommu/fsl_pamu: Fix resource leak in fsl_pamu_probe() iommu/amd: Fix pci device refcount leak in ppr_notifier() rtc: snvs: Allow a time difference on clock register read include/uapi/linux/swab: Fix potentially missing __always_inline HSI: omap_ssi_core: Fix error handling in ssi_init() perf symbol: correction while adjusting symbol power: supply: fix residue sysfs file in error handle route of __power_supply_register() HSI: omap_ssi_core: fix possible memory leak in ssi_probe() HSI: omap_ssi_core: fix unbalanced pm_runtime_disable() fbdev: uvesafb: Fixes an error handling path in uvesafb_probe() fbdev: vermilion: decrease reference count in error path fbdev: via: Fix error in via_core_init() fbdev: pm2fb: fix missing pci_disable_device() fbdev: ssd1307fb: Drop optional dependency samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() tracing/hist: Fix issue of losting command info in error_log usb: storage: Add check for kcalloc i2c: ismt: Fix an out-of-bounds bug in ismt_access() vme: Fix error not catched in fake_init() staging: rtl8192e: Fix potential use-after-free in rtllib_rx_Monitor() staging: rtl8192u: Fix use after free in ieee80211_rx() i2c: pxa-pci: fix missing pci_disable_device() on error in ce4100_i2c_probe chardev: fix error handling in cdev_device_add() mcb: mcb-parse: fix error handing in chameleon_parse_gdd() drivers: mcb: fix resource leak in mcb_probe() usb: gadget: f_hid: fix refcount leak on error path usb: gadget: f_hid: fix f_hidg lifetime vs cdev usb: gadget: f_hid: optional SETUP/SET_REPORT mode cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter() cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter() misc: sgi-gru: fix use-after-free error in gru_set_context_option, gru_fault and gru_handle_user_call_os misc: tifm: fix possible memory leak in tifm_7xx1_switch_media() test_firmware: fix memory leak in test_firmware_init() serial: sunsab: Fix error handling in sunsab_init() serial: altera_uart: fix locking in polling mode tty: serial: altera_uart_{r,t}x_chars() need only uart_port tty: serial: clean up stop-tx part in altera_uart_tx_chars() serial: pch: Fix PCI device refcount leak in pch_request_dma() serial: pl011: Do not clear RX FIFO & RX interrupt in unthrottle. serial: amba-pl011: avoid SBSA UART accessing DMACR register usb: typec: Check for ops->exit instead of ops->enter in altmode_exit staging: vme_user: Fix possible UAF in tsi148_dma_list_add usb: fotg210-udc: Fix ages old endianness issues uio: uio_dmem_genirq: Fix deadlock between irq config and handling uio: uio_dmem_genirq: Fix missing unlock in irq configuration vfio: platform: Do not pass return buffer to ACPI _RST method class: fix possible memory leak in __class_register() serial: tegra: Read DMA status before terminating tty: serial: tegra: Activate RX DMA transfer by request serial: tegra: Add PIO mode support serial: tegra: report clk rate errors serial: tegra: add support to adjust baud rate serial: tegra: add support to use 8 bytes trigger serial: tegra: set maximum num of uart ports to 8 serial: tegra: check for FIFO mode enabled status serial: tegra: avoid reg access when clk disabled drivers: dio: fix possible memory leak in dio_init() IB/IPoIB: Fix queue count inconsistency for PKEY child interfaces hwrng: geode - Fix PCI device refcount leak hwrng: amd - Fix PCI device refcount leak crypto: img-hash - Fix variable dereferenced before check 'hdev->req' orangefs: Fix sysfs not cleanup when dev init failed RDMA/hfi1: Fix error return code in parse_platform_config() scsi: snic: Fix possible UAF in snic_tgt_create() scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails scsi: ipr: Fix WARNING in ipr_init() scsi: fcoe: Fix possible name leak when device_register() fails scsi: hpsa: Fix possible memory leak in hpsa_add_sas_device() scsi: hpsa: Fix error handling in hpsa_add_sas_host() crypto: tcrypt - Fix multibuffer skcipher speed test mem leak scsi: hpsa: Fix possible memory leak in hpsa_init_one() scsi: hpsa: use local workqueues instead of system workqueues RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed crypto: ccree - Make cc_debugfs_global_fini() available for module init function RDMA/hfi: Decrease PCI device reference count in error path PCI: Check for alloc failure in pci_request_irq() scsi: scsi_debug: Fix a warning in resp_write_scat() RDMA/nldev: Return "-EAGAIN" if the cm_id isn't from expected port f2fs: fix normal discard process apparmor: Fix abi check to include v8 abi apparmor: fix lockdep warning when removing a namespace apparmor: fix a memleak in multi_transaction_new() stmmac: fix potential division by 0 Bluetooth: RFCOMM: don't call kfree_skb() under spin_lock_irqsave() Bluetooth: hci_core: don't call kfree_skb() under spin_lock_irqsave() Bluetooth: hci_bcsp: don't call kfree_skb() under spin_lock_irqsave() Bluetooth: hci_h5: don't call kfree_skb() under spin_lock_irqsave() Bluetooth: hci_qca: don't call kfree_skb() under spin_lock_irqsave() Bluetooth: btusb: don't call kfree_skb() under spin_lock_irqsave() ntb_netdev: Use dev_kfree_skb_any() in interrupt context net: lan9303: Fix read error execution path net: amd-xgbe: Check only the minimum speed for active/passive cables net: amd-xgbe: Fix logic around active and passive cables net: amd: lance: don't call dev_kfree_skb() under spin_lock_irqsave() hamradio: don't call dev_kfree_skb() under spin_lock_irqsave() net: ethernet: dnet: don't call dev_kfree_skb() under spin_lock_irqsave() net: emaclite: don't call dev_kfree_skb() under spin_lock_irqsave() net: apple: bmac: don't call dev_kfree_skb() under spin_lock_irqsave() net: apple: mace: don't call dev_kfree_skb() under spin_lock_irqsave() net/tunnel: wait until all sk_user_data reader finish before releasing the sock net: farsync: Fix kmemleak when rmmods farsync ethernet: s2io: don't call dev_kfree_skb() under spin_lock_irqsave() drivers: net: qlcnic: Fix potential memory leak in qlcnic_sriov_init() net: defxx: Fix missing err handling in dfx_init() net: vmw_vsock: vmci: Check memcpy_from_msg() clk: socfpga: use clk_hw_register for a5/c5 clk: socfpga: clk-pll: Remove unused variable 'rc' blktrace: Fix output non-blktrace event when blk_classic option enabled wifi: brcmfmac: Fix error return code in brcmf_sdio_download_firmware() rtl8xxxu: add enumeration for channel bandwidth wifi: rtl8xxxu: Add __packed to struct rtl8723bu_c2h clk: samsung: Fix memory leak in _samsung_clk_register_pll() media: coda: Add check for kmalloc media: coda: Add check for dcoda_iram_alloc media: c8sectpfe: Add of_node_put() when breaking out of loop mmc: mmci: fix return value check of mmc_add_host() mmc: wbsd: fix return value check of mmc_add_host() mmc: via-sdmmc: fix return value check of mmc_add_host() mmc: meson-gx: fix return value check of mmc_add_host() mmc: atmel-mci: fix return value check of mmc_add_host() mmc: wmt-sdmmc: fix return value check of mmc_add_host() mmc: vub300: fix return value check of mmc_add_host() mmc: toshsd: fix return value check of mmc_add_host() mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host() mmc: mxcmmc: fix return value check of mmc_add_host() mmc: moxart: fix return value check of mmc_add_host() NFSv4.x: Fail client initialisation if state manager thread can't run SUNRPC: Fix missing release socket in rpc_sockname() ALSA: mts64: fix possible null-ptr-defer in snd_mts64_interrupt media: saa7164: fix missing pci_disable_device() regulator: core: fix module refcount leak in set_supply() wifi: cfg80211: Fix not unregister reg_pdev when load_builtin_regdb_keys() fails bonding: uninitialized variable in bond_miimon_inspect() ASoC: pcm512x: Fix PM disable depth imbalance in pcm512x_probe drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios() drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios() ALSA: asihpi: fix missing pci_disable_device() NFSv4: Fix a deadlock between nfs4_open_recover_helper() and delegreturn NFSv4.2: Fix a memory stomp in decode_attr_security_label drm/tegra: Add missing clk_disable_unprepare() in tegra_dc_probe() media: s5p-mfc: Add variant data for MFC v7 hardware for Exynos 3250 SoC media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer() media: dvb-core: Fix ignored return value in dvb_register_frontend() pinctrl: pinconf-generic: add missing of_node_put() media: imon: fix a race condition in send_packet() drbd: remove call to memset before free device/resource/connection mtd: maps: pxa2xx-flash: fix memory leak in probe bonding: Export skip slave logic to function clk: rockchip: Fix memory leak in rockchip_clk_register_pll() ALSA: seq: fix undefined behavior in bit shift for SNDRV_SEQ_FILTER_USE_EVENT HID: hid-sensor-custom: set fixed size for custom attributes media: platform: exynos4-is: Fix error handling in fimc_md_init() media: solo6x10: fix possible memory leak in solo_sysfs_init() Input: elants_i2c - properly handle the reset GPIO when power is off mtd: lpddr2_nvm: Fix possible null-ptr-deref wifi: ath10k: Fix return value in ath10k_pci_init() ima: Fix misuse of dereference of pointer in template_desc_init_fields() regulator: core: fix unbalanced of node refcount in regulator_dev_lookup() ASoC: pxa: fix null-pointer dereference in filter() drm/radeon: Add the missed acpi_put_table() to fix memory leak net, proc: Provide PROC_FS=n fallback for proc_create_net_single_write() media: camss: Clean up received buffers on failed start of streaming wifi: rsi: Fix handling of 802.3 EAPOL frames sent via control port mtd: Fix device name leak when register device failed in add_mtd_device() media: vivid: fix compose size exceed boundary spi: Update reference to struct spi_controller can: kvaser_usb: Compare requested bittiming parameters with actual parameters in do_set_{,data}_bittiming can: kvaser_usb: Add struct kvaser_usb_busparams can: kvaser_usb_leaf: Fix bogus restart events can: kvaser_usb_leaf: Fix wrong CAN state after stopping can: kvaser_usb_leaf: Fix improved state not being reported can: kvaser_usb_leaf: Set Warning state even without bus errors can: kvaser_usb: kvaser_usb_leaf: Handle CMD_ERROR_EVENT can: kvaser_usb: kvaser_usb_leaf: Rename {leaf,usbcan}_cmd_error_event to {leaf,usbcan}_cmd_can_error_event can: kvaser_usb: kvaser_usb_leaf: Get capabilities from device can: kvaser_usb: do not increase tx statistics when sending error message frames media: i2c: ad5820: Fix error path pata_ipx4xx_cf: Fix unsigned comparison with less than zero wifi: rtl8xxxu: Fix reading the vendor of combo chips wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb() wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs() rapidio: devices: fix missing put_device in mport_cdev_open hfs: Fix OOB Write in hfs_asc2mac relay: fix type mismatch when allocating memory in relay_create_buf() eventfd: change int to __u64 in eventfd_signal() ifndef CONFIG_EVENTFD rapidio: fix possible UAF when kfifo_alloc() fails fs: sysv: Fix sysv_nblocks() returns wrong value MIPS: BCM63xx: Add check for NULL for clk in clk_enable platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]() PM: runtime: Do not call __rpm_callback() from rpm_idle() PM: runtime: Improve path in rpm_idle() when no callback xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource() x86/xen: Fix memory leak in xen_init_lock_cpu() x86/xen: Fix memory leak in xen_smp_intr_init{_pv}() xen/events: only register debug interrupt for 2-level events uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() clocksource/drivers/sh_cmt: Make sure channel clock supply is enabled rapidio: rio: fix possible name leak in rio_register_mport() rapidio: fix possible name leaks when rio_add_device() fails debugfs: fix error when writing negative value to atomic_t debugfs file lib/notifier-error-inject: fix error when writing -errno to debugfs file libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value cpufreq: amd_freq_sensitivity: Add missing pci_dev_put() irqchip: gic-pm: Use pm_runtime_resume_and_get() in gic_probe() perf/x86/intel/uncore: Fix reference count leak in hswep_has_limit_sbox() PNP: fix name memory leak in pnp_alloc_dev() MIPS: vpe-cmp: fix possible memory leak while module exiting MIPS: vpe-mt: fix possible memory leak while module exiting ocfs2: fix memory leak in ocfs2_stack_glue_init() proc: fixup uptime selftest timerqueue: Use rb_entry_safe() in timerqueue_getnext() perf: Fix possible memleak in pmu_dev_alloc() selftests/ftrace: event_triggers: wait longer for test_event_enable fs: don't audit the capability check in simple_xattr_list() alpha: fix syscall entry in !AUDUT_SYSCALL case cpuidle: dt: Return the correct numbers of parsed idle states tpm/tpm_crb: Fix error message in __crb_relinquish_locality() pstore: Avoid kcore oops by vmap()ing with VM_IOREMAP ARM: mmp: fix timer_read delay pstore/ram: Fix error return code in ramoops_probe() ARM: dts: turris-omnia: Add switch port 6 node ARM: dts: turris-omnia: Add ethernet aliases ARM: dts: armada-39x: Fix assigned-addresses for every PCIe Root Port ARM: dts: armada-38x: Fix assigned-addresses for every PCIe Root Port ARM: dts: armada-375: Fix assigned-addresses for every PCIe Root Port ARM: dts: armada-xp: Fix assigned-addresses for every PCIe Root Port ARM: dts: armada-370: Fix assigned-addresses for every PCIe Root Port ARM: dts: dove: Fix assigned-addresses for every PCIe Root Port arm64: dts: mediatek: mt6797: Fix 26M oscillator unit name arm64: dts: mt2712-evb: Fix vproc fixed regulators unit names arm64: dts: mt2712e: Fix unit address for pinctrl node arm64: dts: mt2712e: Fix unit_address_vs_reg warning for oscillators perf: arm_dsu: Fix hotplug callback leak in dsu_pmu_init() soc: ti: smartreflex: Fix PM disable depth imbalance in omap_sr_probe arm: dts: spear600: Fix clcd interrupt drivers: soc: ti: knav_qmss_queue: Mark knav_acc_firmwares as static ARM: dts: qcom: apq8064: fix coresight compatible usb: musb: remove extra check in musb_gadget_vbus_draw net: loopback: use NET_NAME_PREDICTABLE for name_assign_type Bluetooth: L2CAP: Fix u8 overflow igb: Initialize mailbox message for VF reset USB: serial: f81534: fix division by zero on line-speed change USB: serial: cp210x: add Kamstrup RF sniffer PIDs USB: serial: option: add Quectel EM05-G modem usb: gadget: uvc: Prevent buffer overflow in setup handler udf: Fix extending file within last block udf: Do not bother looking for prealloc extents if i_lenExtents matches i_size udf: Fix preallocation discarding at indirect extent boundary udf: Discard preallocation before extending file with a hole perf script python: Remove explicit shebang from tests/attr.c ASoC: ops: Correct bounds check for second channel on SX controls can: mcba_usb: Fix termination command argument can: sja1000: fix size of OCR_MODE_MASK define pinctrl: meditatek: Startup with the IRQs disabled ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx() nfp: fix use-after-free in area_cache_get() block: unhash blkdev part inode when the part is deleted mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths mm/khugepaged: fix GUP-fast interaction by sending IPI ANDROID: Add more hvc devices for virtio-console. Conflicts: drivers/base/core.c drivers/edac/edac_device.c drivers/hwtracing/coresight/coresight-etm4x.c drivers/net/wireless/mac80211_hwsim.c drivers/scsi/ufs/ufshcd-crypto.c drivers/usb/gadget/function/f_fs.c drivers/usb/gadget/function/f_hid.c Change-Id: Ied998db07e927ccb3376a78f044df36088d9e3b8
4085 lines
105 KiB
C
4085 lines
105 KiB
C
/*
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* Copyright 2002-2005, Instant802 Networks, Inc.
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* Copyright 2005-2006, Devicescape Software, Inc.
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* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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* Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
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* Copyright 2013-2014 Intel Mobile Communications GmbH
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* Copyright 2017 Intel Deutschland GmbH
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* Copyright (C) 2018 Intel Corporation
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/**
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* DOC: Wireless regulatory infrastructure
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*
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* The usual implementation is for a driver to read a device EEPROM to
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* determine which regulatory domain it should be operating under, then
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* looking up the allowable channels in a driver-local table and finally
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* registering those channels in the wiphy structure.
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*
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* Another set of compliance enforcement is for drivers to use their
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* own compliance limits which can be stored on the EEPROM. The host
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* driver or firmware may ensure these are used.
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*
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* In addition to all this we provide an extra layer of regulatory
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* conformance. For drivers which do not have any regulatory
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* information CRDA provides the complete regulatory solution.
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* For others it provides a community effort on further restrictions
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* to enhance compliance.
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*
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* Note: When number of rules --> infinity we will not be able to
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* index on alpha2 any more, instead we'll probably have to
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* rely on some SHA1 checksum of the regdomain for example.
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/slab.h>
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#include <linux/list.h>
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#include <linux/ctype.h>
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#include <linux/nl80211.h>
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#include <linux/platform_device.h>
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#include <linux/verification.h>
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#include <linux/moduleparam.h>
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#include <linux/firmware.h>
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#include <net/cfg80211.h>
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#include "core.h"
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#include "reg.h"
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#include "rdev-ops.h"
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#include "regdb.h"
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#include "nl80211.h"
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/*
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* Grace period we give before making sure all current interfaces reside on
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* channels allowed by the current regulatory domain.
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*/
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#define REG_ENFORCE_GRACE_MS 60000
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/**
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* enum reg_request_treatment - regulatory request treatment
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*
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* @REG_REQ_OK: continue processing the regulatory request
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* @REG_REQ_IGNORE: ignore the regulatory request
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* @REG_REQ_INTERSECT: the regulatory domain resulting from this request should
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* be intersected with the current one.
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* @REG_REQ_ALREADY_SET: the regulatory request will not change the current
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* regulatory settings, and no further processing is required.
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*/
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enum reg_request_treatment {
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REG_REQ_OK,
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REG_REQ_IGNORE,
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REG_REQ_INTERSECT,
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REG_REQ_ALREADY_SET,
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};
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static struct regulatory_request core_request_world = {
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.initiator = NL80211_REGDOM_SET_BY_CORE,
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.alpha2[0] = '0',
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.alpha2[1] = '0',
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.intersect = false,
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.processed = true,
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.country_ie_env = ENVIRON_ANY,
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};
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/*
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* Receipt of information from last regulatory request,
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* protected by RTNL (and can be accessed with RCU protection)
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*/
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static struct regulatory_request __rcu *last_request =
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(void __force __rcu *)&core_request_world;
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/* To trigger userspace events and load firmware */
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static struct platform_device *reg_pdev;
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/*
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* Central wireless core regulatory domains, we only need two,
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* the current one and a world regulatory domain in case we have no
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* information to give us an alpha2.
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* (protected by RTNL, can be read under RCU)
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*/
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const struct ieee80211_regdomain __rcu *cfg80211_regdomain;
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/*
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* Number of devices that registered to the core
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* that support cellular base station regulatory hints
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* (protected by RTNL)
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*/
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static int reg_num_devs_support_basehint;
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/*
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* State variable indicating if the platform on which the devices
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* are attached is operating in an indoor environment. The state variable
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* is relevant for all registered devices.
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*/
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static bool reg_is_indoor;
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static spinlock_t reg_indoor_lock;
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/* Used to track the userspace process controlling the indoor setting */
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static u32 reg_is_indoor_portid;
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static void restore_regulatory_settings(bool reset_user);
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static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
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{
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return rcu_dereference_rtnl(cfg80211_regdomain);
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}
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const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy)
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{
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return rcu_dereference_rtnl(wiphy->regd);
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}
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static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region)
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{
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switch (dfs_region) {
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case NL80211_DFS_UNSET:
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return "unset";
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case NL80211_DFS_FCC:
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return "FCC";
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case NL80211_DFS_ETSI:
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return "ETSI";
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case NL80211_DFS_JP:
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return "JP";
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}
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return "Unknown";
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}
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enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
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{
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const struct ieee80211_regdomain *regd = NULL;
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const struct ieee80211_regdomain *wiphy_regd = NULL;
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regd = get_cfg80211_regdom();
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if (!wiphy)
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goto out;
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wiphy_regd = get_wiphy_regdom(wiphy);
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if (!wiphy_regd)
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goto out;
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if (wiphy_regd->dfs_region == regd->dfs_region)
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goto out;
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pr_debug("%s: device specific dfs_region (%s) disagrees with cfg80211's central dfs_region (%s)\n",
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dev_name(&wiphy->dev),
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reg_dfs_region_str(wiphy_regd->dfs_region),
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reg_dfs_region_str(regd->dfs_region));
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out:
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return regd->dfs_region;
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}
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static void rcu_free_regdom(const struct ieee80211_regdomain *r)
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{
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if (!r)
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return;
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kfree_rcu((struct ieee80211_regdomain *)r, rcu_head);
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}
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static struct regulatory_request *get_last_request(void)
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{
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return rcu_dereference_rtnl(last_request);
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}
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/* Used to queue up regulatory hints */
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static LIST_HEAD(reg_requests_list);
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static spinlock_t reg_requests_lock;
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/* Used to queue up beacon hints for review */
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static LIST_HEAD(reg_pending_beacons);
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static spinlock_t reg_pending_beacons_lock;
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/* Used to keep track of processed beacon hints */
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static LIST_HEAD(reg_beacon_list);
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struct reg_beacon {
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struct list_head list;
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struct ieee80211_channel chan;
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};
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static void reg_check_chans_work(struct work_struct *work);
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static DECLARE_DELAYED_WORK(reg_check_chans, reg_check_chans_work);
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static void reg_todo(struct work_struct *work);
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static DECLARE_WORK(reg_work, reg_todo);
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/* We keep a static world regulatory domain in case of the absence of CRDA */
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static const struct ieee80211_regdomain world_regdom = {
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.n_reg_rules = 8,
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.alpha2 = "00",
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.reg_rules = {
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/* IEEE 802.11b/g, channels 1..11 */
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REG_RULE(2412-10, 2462+10, 40, 6, 20, 0),
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/* IEEE 802.11b/g, channels 12..13. */
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REG_RULE(2467-10, 2472+10, 20, 6, 20,
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NL80211_RRF_NO_IR | NL80211_RRF_AUTO_BW),
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/* IEEE 802.11 channel 14 - Only JP enables
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* this and for 802.11b only */
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REG_RULE(2484-10, 2484+10, 20, 6, 20,
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NL80211_RRF_NO_IR |
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NL80211_RRF_NO_OFDM),
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/* IEEE 802.11a, channel 36..48 */
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REG_RULE(5180-10, 5240+10, 80, 6, 20,
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NL80211_RRF_NO_IR |
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NL80211_RRF_AUTO_BW),
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/* IEEE 802.11a, channel 52..64 - DFS required */
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REG_RULE(5260-10, 5320+10, 80, 6, 20,
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NL80211_RRF_NO_IR |
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NL80211_RRF_AUTO_BW |
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NL80211_RRF_DFS),
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/* IEEE 802.11a, channel 100..144 - DFS required */
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REG_RULE(5500-10, 5720+10, 160, 6, 20,
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NL80211_RRF_NO_IR |
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NL80211_RRF_DFS),
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/* IEEE 802.11a, channel 149..165 */
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REG_RULE(5745-10, 5825+10, 80, 6, 20,
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NL80211_RRF_NO_IR),
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/* IEEE 802.11ad (60GHz), channels 1..3 */
|
|
REG_RULE(56160+2160*1-1080, 56160+2160*3+1080, 2160, 0, 0, 0),
|
|
}
|
|
};
|
|
|
|
/* protected by RTNL */
|
|
static const struct ieee80211_regdomain *cfg80211_world_regdom =
|
|
&world_regdom;
|
|
|
|
static char *ieee80211_regdom = "00";
|
|
static char user_alpha2[2];
|
|
|
|
module_param(ieee80211_regdom, charp, 0444);
|
|
MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code");
|
|
|
|
static void reg_free_request(struct regulatory_request *request)
|
|
{
|
|
if (request == &core_request_world)
|
|
return;
|
|
|
|
if (request != get_last_request())
|
|
kfree(request);
|
|
}
|
|
|
|
static void reg_free_last_request(void)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (lr != &core_request_world && lr)
|
|
kfree_rcu(lr, rcu_head);
|
|
}
|
|
|
|
static void reg_update_last_request(struct regulatory_request *request)
|
|
{
|
|
struct regulatory_request *lr;
|
|
|
|
lr = get_last_request();
|
|
if (lr == request)
|
|
return;
|
|
|
|
reg_free_last_request();
|
|
rcu_assign_pointer(last_request, request);
|
|
}
|
|
|
|
static void reset_regdomains(bool full_reset,
|
|
const struct ieee80211_regdomain *new_regdom)
|
|
{
|
|
const struct ieee80211_regdomain *r;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
r = get_cfg80211_regdom();
|
|
|
|
/* avoid freeing static information or freeing something twice */
|
|
if (r == cfg80211_world_regdom)
|
|
r = NULL;
|
|
if (cfg80211_world_regdom == &world_regdom)
|
|
cfg80211_world_regdom = NULL;
|
|
if (r == &world_regdom)
|
|
r = NULL;
|
|
|
|
rcu_free_regdom(r);
|
|
rcu_free_regdom(cfg80211_world_regdom);
|
|
|
|
cfg80211_world_regdom = &world_regdom;
|
|
rcu_assign_pointer(cfg80211_regdomain, new_regdom);
|
|
|
|
if (!full_reset)
|
|
return;
|
|
|
|
reg_update_last_request(&core_request_world);
|
|
}
|
|
|
|
/*
|
|
* Dynamic world regulatory domain requested by the wireless
|
|
* core upon initialization
|
|
*/
|
|
static void update_world_regdomain(const struct ieee80211_regdomain *rd)
|
|
{
|
|
struct regulatory_request *lr;
|
|
|
|
lr = get_last_request();
|
|
|
|
WARN_ON(!lr);
|
|
|
|
reset_regdomains(false, rd);
|
|
|
|
cfg80211_world_regdom = rd;
|
|
}
|
|
|
|
bool is_world_regdom(const char *alpha2)
|
|
{
|
|
if (!alpha2)
|
|
return false;
|
|
return alpha2[0] == '0' && alpha2[1] == '0';
|
|
}
|
|
|
|
static bool is_alpha2_set(const char *alpha2)
|
|
{
|
|
if (!alpha2)
|
|
return false;
|
|
return alpha2[0] && alpha2[1];
|
|
}
|
|
|
|
static bool is_unknown_alpha2(const char *alpha2)
|
|
{
|
|
if (!alpha2)
|
|
return false;
|
|
/*
|
|
* Special case where regulatory domain was built by driver
|
|
* but a specific alpha2 cannot be determined
|
|
*/
|
|
return alpha2[0] == '9' && alpha2[1] == '9';
|
|
}
|
|
|
|
static bool is_intersected_alpha2(const char *alpha2)
|
|
{
|
|
if (!alpha2)
|
|
return false;
|
|
/*
|
|
* Special case where regulatory domain is the
|
|
* result of an intersection between two regulatory domain
|
|
* structures
|
|
*/
|
|
return alpha2[0] == '9' && alpha2[1] == '8';
|
|
}
|
|
|
|
static bool is_an_alpha2(const char *alpha2)
|
|
{
|
|
if (!alpha2)
|
|
return false;
|
|
return isalpha(alpha2[0]) && isalpha(alpha2[1]);
|
|
}
|
|
|
|
static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y)
|
|
{
|
|
if (!alpha2_x || !alpha2_y)
|
|
return false;
|
|
return alpha2_x[0] == alpha2_y[0] && alpha2_x[1] == alpha2_y[1];
|
|
}
|
|
|
|
static bool regdom_changes(const char *alpha2)
|
|
{
|
|
const struct ieee80211_regdomain *r = get_cfg80211_regdom();
|
|
|
|
if (!r)
|
|
return true;
|
|
return !alpha2_equal(r->alpha2, alpha2);
|
|
}
|
|
|
|
/*
|
|
* The NL80211_REGDOM_SET_BY_USER regdom alpha2 is cached, this lets
|
|
* you know if a valid regulatory hint with NL80211_REGDOM_SET_BY_USER
|
|
* has ever been issued.
|
|
*/
|
|
static bool is_user_regdom_saved(void)
|
|
{
|
|
if (user_alpha2[0] == '9' && user_alpha2[1] == '7')
|
|
return false;
|
|
|
|
/* This would indicate a mistake on the design */
|
|
if (WARN(!is_world_regdom(user_alpha2) && !is_an_alpha2(user_alpha2),
|
|
"Unexpected user alpha2: %c%c\n",
|
|
user_alpha2[0], user_alpha2[1]))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool is_cfg80211_regdom_intersected(void)
|
|
{
|
|
return is_intersected_alpha2(get_cfg80211_regdom()->alpha2);
|
|
}
|
|
|
|
static const struct ieee80211_regdomain *
|
|
reg_copy_regd(const struct ieee80211_regdomain *src_regd)
|
|
{
|
|
struct ieee80211_regdomain *regd;
|
|
int size_of_regd;
|
|
unsigned int i;
|
|
|
|
size_of_regd =
|
|
sizeof(struct ieee80211_regdomain) +
|
|
src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule);
|
|
|
|
regd = kzalloc(size_of_regd, GFP_KERNEL);
|
|
if (!regd)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain));
|
|
|
|
for (i = 0; i < src_regd->n_reg_rules; i++)
|
|
memcpy(®d->reg_rules[i], &src_regd->reg_rules[i],
|
|
sizeof(struct ieee80211_reg_rule));
|
|
|
|
return regd;
|
|
}
|
|
|
|
struct reg_regdb_apply_request {
|
|
struct list_head list;
|
|
const struct ieee80211_regdomain *regdom;
|
|
};
|
|
|
|
static LIST_HEAD(reg_regdb_apply_list);
|
|
static DEFINE_MUTEX(reg_regdb_apply_mutex);
|
|
|
|
static void reg_regdb_apply(struct work_struct *work)
|
|
{
|
|
struct reg_regdb_apply_request *request;
|
|
|
|
rtnl_lock();
|
|
|
|
mutex_lock(®_regdb_apply_mutex);
|
|
while (!list_empty(®_regdb_apply_list)) {
|
|
request = list_first_entry(®_regdb_apply_list,
|
|
struct reg_regdb_apply_request,
|
|
list);
|
|
list_del(&request->list);
|
|
|
|
set_regdom(request->regdom, REGD_SOURCE_INTERNAL_DB);
|
|
kfree(request);
|
|
}
|
|
mutex_unlock(®_regdb_apply_mutex);
|
|
|
|
rtnl_unlock();
|
|
}
|
|
|
|
static DECLARE_WORK(reg_regdb_work, reg_regdb_apply);
|
|
|
|
static int reg_schedule_apply(const struct ieee80211_regdomain *regdom)
|
|
{
|
|
struct reg_regdb_apply_request *request;
|
|
|
|
request = kzalloc(sizeof(struct reg_regdb_apply_request), GFP_KERNEL);
|
|
if (!request) {
|
|
kfree(regdom);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
request->regdom = regdom;
|
|
|
|
mutex_lock(®_regdb_apply_mutex);
|
|
list_add_tail(&request->list, ®_regdb_apply_list);
|
|
mutex_unlock(®_regdb_apply_mutex);
|
|
|
|
schedule_work(®_regdb_work);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_CFG80211_INTERNAL_REGDB
|
|
static int reg_query_builtin(const char *alpha2)
|
|
{
|
|
const struct ieee80211_regdomain *regdom = NULL;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < reg_regdb_size; i++) {
|
|
if (alpha2_equal(alpha2, reg_regdb[i]->alpha2)) {
|
|
regdom = reg_copy_regd(reg_regdb[i]);
|
|
break;
|
|
}
|
|
}
|
|
if (!regdom)
|
|
return -ENODATA;
|
|
|
|
return reg_schedule_apply(regdom);
|
|
}
|
|
|
|
/* Feel free to add any other sanity checks here */
|
|
static void reg_regdb_size_check(void)
|
|
{
|
|
/* We should ideally BUILD_BUG_ON() but then random builds would fail */
|
|
WARN_ONCE(!reg_regdb_size, "db.txt is empty, you should update it...");
|
|
}
|
|
#else
|
|
static inline void reg_regdb_size_check(void) {}
|
|
static inline int reg_query_builtin(const char *alpha2)
|
|
{
|
|
return -ENODATA;
|
|
}
|
|
#endif /* CONFIG_CFG80211_INTERNAL_REGDB */
|
|
|
|
#ifdef CONFIG_CFG80211_CRDA_SUPPORT
|
|
/* Max number of consecutive attempts to communicate with CRDA */
|
|
#define REG_MAX_CRDA_TIMEOUTS 10
|
|
|
|
static u32 reg_crda_timeouts;
|
|
|
|
static void crda_timeout_work(struct work_struct *work);
|
|
static DECLARE_DELAYED_WORK(crda_timeout, crda_timeout_work);
|
|
|
|
static void crda_timeout_work(struct work_struct *work)
|
|
{
|
|
pr_debug("Timeout while waiting for CRDA to reply, restoring regulatory settings\n");
|
|
rtnl_lock();
|
|
reg_crda_timeouts++;
|
|
restore_regulatory_settings(true);
|
|
rtnl_unlock();
|
|
}
|
|
|
|
static void cancel_crda_timeout(void)
|
|
{
|
|
cancel_delayed_work(&crda_timeout);
|
|
}
|
|
|
|
static void cancel_crda_timeout_sync(void)
|
|
{
|
|
cancel_delayed_work_sync(&crda_timeout);
|
|
}
|
|
|
|
static void reset_crda_timeouts(void)
|
|
{
|
|
reg_crda_timeouts = 0;
|
|
}
|
|
|
|
/*
|
|
* This lets us keep regulatory code which is updated on a regulatory
|
|
* basis in userspace.
|
|
*/
|
|
static int call_crda(const char *alpha2)
|
|
{
|
|
char country[12];
|
|
char *env[] = { country, NULL };
|
|
int ret;
|
|
|
|
snprintf(country, sizeof(country), "COUNTRY=%c%c",
|
|
alpha2[0], alpha2[1]);
|
|
|
|
if (reg_crda_timeouts > REG_MAX_CRDA_TIMEOUTS) {
|
|
pr_debug("Exceeded CRDA call max attempts. Not calling CRDA\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!is_world_regdom((char *) alpha2))
|
|
pr_debug("Calling CRDA for country: %c%c\n",
|
|
alpha2[0], alpha2[1]);
|
|
else
|
|
pr_debug("Calling CRDA to update world regulatory domain\n");
|
|
|
|
ret = kobject_uevent_env(®_pdev->dev.kobj, KOBJ_CHANGE, env);
|
|
if (ret)
|
|
return ret;
|
|
|
|
queue_delayed_work(system_power_efficient_wq,
|
|
&crda_timeout, msecs_to_jiffies(3142));
|
|
return 0;
|
|
}
|
|
#else
|
|
static inline void cancel_crda_timeout(void) {}
|
|
static inline void cancel_crda_timeout_sync(void) {}
|
|
static inline void reset_crda_timeouts(void) {}
|
|
static inline int call_crda(const char *alpha2)
|
|
{
|
|
return -ENODATA;
|
|
}
|
|
#endif /* CONFIG_CFG80211_CRDA_SUPPORT */
|
|
|
|
/* code to directly load a firmware database through request_firmware */
|
|
static const struct fwdb_header *regdb;
|
|
|
|
struct fwdb_country {
|
|
u8 alpha2[2];
|
|
__be16 coll_ptr;
|
|
/* this struct cannot be extended */
|
|
} __packed __aligned(4);
|
|
|
|
struct fwdb_collection {
|
|
u8 len;
|
|
u8 n_rules;
|
|
u8 dfs_region;
|
|
/* no optional data yet */
|
|
/* aligned to 2, then followed by __be16 array of rule pointers */
|
|
} __packed __aligned(4);
|
|
|
|
enum fwdb_flags {
|
|
FWDB_FLAG_NO_OFDM = BIT(0),
|
|
FWDB_FLAG_NO_OUTDOOR = BIT(1),
|
|
FWDB_FLAG_DFS = BIT(2),
|
|
FWDB_FLAG_NO_IR = BIT(3),
|
|
FWDB_FLAG_AUTO_BW = BIT(4),
|
|
};
|
|
|
|
struct fwdb_wmm_ac {
|
|
u8 ecw;
|
|
u8 aifsn;
|
|
__be16 cot;
|
|
} __packed;
|
|
|
|
struct fwdb_wmm_rule {
|
|
struct fwdb_wmm_ac client[IEEE80211_NUM_ACS];
|
|
struct fwdb_wmm_ac ap[IEEE80211_NUM_ACS];
|
|
} __packed;
|
|
|
|
struct fwdb_rule {
|
|
u8 len;
|
|
u8 flags;
|
|
__be16 max_eirp;
|
|
__be32 start, end, max_bw;
|
|
/* start of optional data */
|
|
__be16 cac_timeout;
|
|
__be16 wmm_ptr;
|
|
} __packed __aligned(4);
|
|
|
|
#define FWDB_MAGIC 0x52474442
|
|
#define FWDB_VERSION 20
|
|
|
|
struct fwdb_header {
|
|
__be32 magic;
|
|
__be32 version;
|
|
struct fwdb_country country[];
|
|
} __packed __aligned(4);
|
|
|
|
static int ecw2cw(int ecw)
|
|
{
|
|
return (1 << ecw) - 1;
|
|
}
|
|
|
|
static bool valid_wmm(struct fwdb_wmm_rule *rule)
|
|
{
|
|
struct fwdb_wmm_ac *ac = (struct fwdb_wmm_ac *)rule;
|
|
int i;
|
|
|
|
for (i = 0; i < IEEE80211_NUM_ACS * 2; i++) {
|
|
u16 cw_min = ecw2cw((ac[i].ecw & 0xf0) >> 4);
|
|
u16 cw_max = ecw2cw(ac[i].ecw & 0x0f);
|
|
u8 aifsn = ac[i].aifsn;
|
|
|
|
if (cw_min >= cw_max)
|
|
return false;
|
|
|
|
if (aifsn < 1)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool valid_rule(const u8 *data, unsigned int size, u16 rule_ptr)
|
|
{
|
|
struct fwdb_rule *rule = (void *)(data + (rule_ptr << 2));
|
|
|
|
if ((u8 *)rule + sizeof(rule->len) > data + size)
|
|
return false;
|
|
|
|
/* mandatory fields */
|
|
if (rule->len < offsetofend(struct fwdb_rule, max_bw))
|
|
return false;
|
|
if (rule->len >= offsetofend(struct fwdb_rule, wmm_ptr)) {
|
|
u32 wmm_ptr = be16_to_cpu(rule->wmm_ptr) << 2;
|
|
struct fwdb_wmm_rule *wmm;
|
|
|
|
if (wmm_ptr + sizeof(struct fwdb_wmm_rule) > size)
|
|
return false;
|
|
|
|
wmm = (void *)(data + wmm_ptr);
|
|
|
|
if (!valid_wmm(wmm))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool valid_country(const u8 *data, unsigned int size,
|
|
const struct fwdb_country *country)
|
|
{
|
|
unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2;
|
|
struct fwdb_collection *coll = (void *)(data + ptr);
|
|
__be16 *rules_ptr;
|
|
unsigned int i;
|
|
|
|
/* make sure we can read len/n_rules */
|
|
if ((u8 *)coll + offsetofend(typeof(*coll), n_rules) > data + size)
|
|
return false;
|
|
|
|
/* make sure base struct and all rules fit */
|
|
if ((u8 *)coll + ALIGN(coll->len, 2) +
|
|
(coll->n_rules * 2) > data + size)
|
|
return false;
|
|
|
|
/* mandatory fields must exist */
|
|
if (coll->len < offsetofend(struct fwdb_collection, dfs_region))
|
|
return false;
|
|
|
|
rules_ptr = (void *)((u8 *)coll + ALIGN(coll->len, 2));
|
|
|
|
for (i = 0; i < coll->n_rules; i++) {
|
|
u16 rule_ptr = be16_to_cpu(rules_ptr[i]);
|
|
|
|
if (!valid_rule(data, size, rule_ptr))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#ifdef CONFIG_CFG80211_REQUIRE_SIGNED_REGDB
|
|
static struct key *builtin_regdb_keys;
|
|
|
|
static void __init load_keys_from_buffer(const u8 *p, unsigned int buflen)
|
|
{
|
|
const u8 *end = p + buflen;
|
|
size_t plen;
|
|
key_ref_t key;
|
|
|
|
while (p < end) {
|
|
/* Each cert begins with an ASN.1 SEQUENCE tag and must be more
|
|
* than 256 bytes in size.
|
|
*/
|
|
if (end - p < 4)
|
|
goto dodgy_cert;
|
|
if (p[0] != 0x30 &&
|
|
p[1] != 0x82)
|
|
goto dodgy_cert;
|
|
plen = (p[2] << 8) | p[3];
|
|
plen += 4;
|
|
if (plen > end - p)
|
|
goto dodgy_cert;
|
|
|
|
key = key_create_or_update(make_key_ref(builtin_regdb_keys, 1),
|
|
"asymmetric", NULL, p, plen,
|
|
((KEY_POS_ALL & ~KEY_POS_SETATTR) |
|
|
KEY_USR_VIEW | KEY_USR_READ),
|
|
KEY_ALLOC_NOT_IN_QUOTA |
|
|
KEY_ALLOC_BUILT_IN |
|
|
KEY_ALLOC_BYPASS_RESTRICTION);
|
|
if (IS_ERR(key)) {
|
|
pr_err("Problem loading in-kernel X.509 certificate (%ld)\n",
|
|
PTR_ERR(key));
|
|
} else {
|
|
pr_notice("Loaded X.509 cert '%s'\n",
|
|
key_ref_to_ptr(key)->description);
|
|
key_ref_put(key);
|
|
}
|
|
p += plen;
|
|
}
|
|
|
|
return;
|
|
|
|
dodgy_cert:
|
|
pr_err("Problem parsing in-kernel X.509 certificate list\n");
|
|
}
|
|
|
|
static int __init load_builtin_regdb_keys(void)
|
|
{
|
|
builtin_regdb_keys =
|
|
keyring_alloc(".builtin_regdb_keys",
|
|
KUIDT_INIT(0), KGIDT_INIT(0), current_cred(),
|
|
((KEY_POS_ALL & ~KEY_POS_SETATTR) |
|
|
KEY_USR_VIEW | KEY_USR_READ | KEY_USR_SEARCH),
|
|
KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL);
|
|
if (IS_ERR(builtin_regdb_keys))
|
|
return PTR_ERR(builtin_regdb_keys);
|
|
|
|
pr_notice("Loading compiled-in X.509 certificates for regulatory database\n");
|
|
|
|
#ifdef CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS
|
|
load_keys_from_buffer(shipped_regdb_certs, shipped_regdb_certs_len);
|
|
#endif
|
|
#ifdef CONFIG_CFG80211_EXTRA_REGDB_KEYDIR
|
|
if (CONFIG_CFG80211_EXTRA_REGDB_KEYDIR[0] != '\0')
|
|
load_keys_from_buffer(extra_regdb_certs, extra_regdb_certs_len);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool regdb_has_valid_signature(const u8 *data, unsigned int size)
|
|
{
|
|
const struct firmware *sig;
|
|
bool result;
|
|
|
|
if (request_firmware(&sig, "regulatory.db.p7s", ®_pdev->dev))
|
|
return false;
|
|
|
|
result = verify_pkcs7_signature(data, size, sig->data, sig->size,
|
|
builtin_regdb_keys,
|
|
VERIFYING_UNSPECIFIED_SIGNATURE,
|
|
NULL, NULL) == 0;
|
|
|
|
release_firmware(sig);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void free_regdb_keyring(void)
|
|
{
|
|
key_put(builtin_regdb_keys);
|
|
}
|
|
#else
|
|
static int load_builtin_regdb_keys(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static bool regdb_has_valid_signature(const u8 *data, unsigned int size)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void free_regdb_keyring(void)
|
|
{
|
|
}
|
|
#endif /* CONFIG_CFG80211_REQUIRE_SIGNED_REGDB */
|
|
|
|
static bool valid_regdb(const u8 *data, unsigned int size)
|
|
{
|
|
const struct fwdb_header *hdr = (void *)data;
|
|
const struct fwdb_country *country;
|
|
|
|
if (size < sizeof(*hdr))
|
|
return false;
|
|
|
|
if (hdr->magic != cpu_to_be32(FWDB_MAGIC))
|
|
return false;
|
|
|
|
if (hdr->version != cpu_to_be32(FWDB_VERSION))
|
|
return false;
|
|
|
|
if (!regdb_has_valid_signature(data, size))
|
|
return false;
|
|
|
|
country = &hdr->country[0];
|
|
while ((u8 *)(country + 1) <= data + size) {
|
|
if (!country->coll_ptr)
|
|
break;
|
|
if (!valid_country(data, size, country))
|
|
return false;
|
|
country++;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void set_wmm_rule(const struct fwdb_header *db,
|
|
const struct fwdb_country *country,
|
|
const struct fwdb_rule *rule,
|
|
struct ieee80211_reg_rule *rrule)
|
|
{
|
|
struct ieee80211_wmm_rule *wmm_rule = &rrule->wmm_rule;
|
|
struct fwdb_wmm_rule *wmm;
|
|
unsigned int i, wmm_ptr;
|
|
|
|
wmm_ptr = be16_to_cpu(rule->wmm_ptr) << 2;
|
|
wmm = (void *)((u8 *)db + wmm_ptr);
|
|
|
|
if (!valid_wmm(wmm)) {
|
|
pr_err("Invalid regulatory WMM rule %u-%u in domain %c%c\n",
|
|
be32_to_cpu(rule->start), be32_to_cpu(rule->end),
|
|
country->alpha2[0], country->alpha2[1]);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
|
|
wmm_rule->client[i].cw_min =
|
|
ecw2cw((wmm->client[i].ecw & 0xf0) >> 4);
|
|
wmm_rule->client[i].cw_max = ecw2cw(wmm->client[i].ecw & 0x0f);
|
|
wmm_rule->client[i].aifsn = wmm->client[i].aifsn;
|
|
wmm_rule->client[i].cot =
|
|
1000 * be16_to_cpu(wmm->client[i].cot);
|
|
wmm_rule->ap[i].cw_min = ecw2cw((wmm->ap[i].ecw & 0xf0) >> 4);
|
|
wmm_rule->ap[i].cw_max = ecw2cw(wmm->ap[i].ecw & 0x0f);
|
|
wmm_rule->ap[i].aifsn = wmm->ap[i].aifsn;
|
|
wmm_rule->ap[i].cot = 1000 * be16_to_cpu(wmm->ap[i].cot);
|
|
}
|
|
|
|
rrule->has_wmm = true;
|
|
}
|
|
|
|
static int __regdb_query_wmm(const struct fwdb_header *db,
|
|
const struct fwdb_country *country, int freq,
|
|
struct ieee80211_reg_rule *rrule)
|
|
{
|
|
unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2;
|
|
struct fwdb_collection *coll = (void *)((u8 *)db + ptr);
|
|
int i;
|
|
|
|
for (i = 0; i < coll->n_rules; i++) {
|
|
__be16 *rules_ptr = (void *)((u8 *)coll + ALIGN(coll->len, 2));
|
|
unsigned int rule_ptr = be16_to_cpu(rules_ptr[i]) << 2;
|
|
struct fwdb_rule *rule = (void *)((u8 *)db + rule_ptr);
|
|
|
|
if (rule->len < offsetofend(struct fwdb_rule, wmm_ptr))
|
|
continue;
|
|
|
|
if (freq >= KHZ_TO_MHZ(be32_to_cpu(rule->start)) &&
|
|
freq <= KHZ_TO_MHZ(be32_to_cpu(rule->end))) {
|
|
set_wmm_rule(db, country, rule, rrule);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -ENODATA;
|
|
}
|
|
|
|
int reg_query_regdb_wmm(char *alpha2, int freq, struct ieee80211_reg_rule *rule)
|
|
{
|
|
const struct fwdb_header *hdr = regdb;
|
|
const struct fwdb_country *country;
|
|
|
|
if (!regdb)
|
|
return -ENODATA;
|
|
|
|
if (IS_ERR(regdb))
|
|
return PTR_ERR(regdb);
|
|
|
|
country = &hdr->country[0];
|
|
while (country->coll_ptr) {
|
|
if (alpha2_equal(alpha2, country->alpha2))
|
|
return __regdb_query_wmm(regdb, country, freq, rule);
|
|
|
|
country++;
|
|
}
|
|
|
|
return -ENODATA;
|
|
}
|
|
EXPORT_SYMBOL(reg_query_regdb_wmm);
|
|
|
|
static int regdb_query_country(const struct fwdb_header *db,
|
|
const struct fwdb_country *country)
|
|
{
|
|
unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2;
|
|
struct fwdb_collection *coll = (void *)((u8 *)db + ptr);
|
|
struct ieee80211_regdomain *regdom;
|
|
unsigned int size_of_regd, i;
|
|
|
|
size_of_regd = sizeof(struct ieee80211_regdomain) +
|
|
coll->n_rules * sizeof(struct ieee80211_reg_rule);
|
|
|
|
regdom = kzalloc(size_of_regd, GFP_KERNEL);
|
|
if (!regdom)
|
|
return -ENOMEM;
|
|
|
|
regdom->n_reg_rules = coll->n_rules;
|
|
regdom->alpha2[0] = country->alpha2[0];
|
|
regdom->alpha2[1] = country->alpha2[1];
|
|
regdom->dfs_region = coll->dfs_region;
|
|
|
|
for (i = 0; i < regdom->n_reg_rules; i++) {
|
|
__be16 *rules_ptr = (void *)((u8 *)coll + ALIGN(coll->len, 2));
|
|
unsigned int rule_ptr = be16_to_cpu(rules_ptr[i]) << 2;
|
|
struct fwdb_rule *rule = (void *)((u8 *)db + rule_ptr);
|
|
struct ieee80211_reg_rule *rrule = ®dom->reg_rules[i];
|
|
|
|
rrule->freq_range.start_freq_khz = be32_to_cpu(rule->start);
|
|
rrule->freq_range.end_freq_khz = be32_to_cpu(rule->end);
|
|
rrule->freq_range.max_bandwidth_khz = be32_to_cpu(rule->max_bw);
|
|
|
|
rrule->power_rule.max_antenna_gain = 0;
|
|
rrule->power_rule.max_eirp = be16_to_cpu(rule->max_eirp);
|
|
|
|
rrule->flags = 0;
|
|
if (rule->flags & FWDB_FLAG_NO_OFDM)
|
|
rrule->flags |= NL80211_RRF_NO_OFDM;
|
|
if (rule->flags & FWDB_FLAG_NO_OUTDOOR)
|
|
rrule->flags |= NL80211_RRF_NO_OUTDOOR;
|
|
if (rule->flags & FWDB_FLAG_DFS)
|
|
rrule->flags |= NL80211_RRF_DFS;
|
|
if (rule->flags & FWDB_FLAG_NO_IR)
|
|
rrule->flags |= NL80211_RRF_NO_IR;
|
|
if (rule->flags & FWDB_FLAG_AUTO_BW)
|
|
rrule->flags |= NL80211_RRF_AUTO_BW;
|
|
|
|
rrule->dfs_cac_ms = 0;
|
|
|
|
/* handle optional data */
|
|
if (rule->len >= offsetofend(struct fwdb_rule, cac_timeout))
|
|
rrule->dfs_cac_ms =
|
|
1000 * be16_to_cpu(rule->cac_timeout);
|
|
if (rule->len >= offsetofend(struct fwdb_rule, wmm_ptr))
|
|
set_wmm_rule(db, country, rule, rrule);
|
|
}
|
|
|
|
return reg_schedule_apply(regdom);
|
|
}
|
|
|
|
static int query_regdb(const char *alpha2)
|
|
{
|
|
const struct fwdb_header *hdr = regdb;
|
|
const struct fwdb_country *country;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (IS_ERR(regdb))
|
|
return PTR_ERR(regdb);
|
|
|
|
country = &hdr->country[0];
|
|
while (country->coll_ptr) {
|
|
if (alpha2_equal(alpha2, country->alpha2))
|
|
return regdb_query_country(regdb, country);
|
|
country++;
|
|
}
|
|
|
|
return -ENODATA;
|
|
}
|
|
|
|
static void regdb_fw_cb(const struct firmware *fw, void *context)
|
|
{
|
|
int set_error = 0;
|
|
bool restore = true;
|
|
void *db;
|
|
|
|
if (!fw) {
|
|
pr_info("failed to load regulatory.db\n");
|
|
set_error = -ENODATA;
|
|
} else if (!valid_regdb(fw->data, fw->size)) {
|
|
pr_info("loaded regulatory.db is malformed or signature is missing/invalid\n");
|
|
set_error = -EINVAL;
|
|
}
|
|
|
|
rtnl_lock();
|
|
if (WARN_ON(regdb && !IS_ERR(regdb))) {
|
|
/* just restore and free new db */
|
|
} else if (set_error) {
|
|
regdb = ERR_PTR(set_error);
|
|
} else if (fw) {
|
|
db = kmemdup(fw->data, fw->size, GFP_KERNEL);
|
|
if (db) {
|
|
regdb = db;
|
|
restore = context && query_regdb(context);
|
|
} else {
|
|
restore = true;
|
|
}
|
|
}
|
|
|
|
if (restore)
|
|
restore_regulatory_settings(true);
|
|
|
|
rtnl_unlock();
|
|
|
|
kfree(context);
|
|
|
|
release_firmware(fw);
|
|
}
|
|
|
|
static int query_regdb_file(const char *alpha2)
|
|
{
|
|
int err;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (regdb)
|
|
return query_regdb(alpha2);
|
|
|
|
alpha2 = kmemdup(alpha2, 2, GFP_KERNEL);
|
|
if (!alpha2)
|
|
return -ENOMEM;
|
|
|
|
err = request_firmware_nowait(THIS_MODULE, true, "regulatory.db",
|
|
®_pdev->dev, GFP_KERNEL,
|
|
(void *)alpha2, regdb_fw_cb);
|
|
if (err)
|
|
kfree(alpha2);
|
|
|
|
return err;
|
|
}
|
|
|
|
int reg_reload_regdb(void)
|
|
{
|
|
const struct firmware *fw;
|
|
void *db;
|
|
int err;
|
|
|
|
err = request_firmware(&fw, "regulatory.db", ®_pdev->dev);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!valid_regdb(fw->data, fw->size)) {
|
|
err = -ENODATA;
|
|
goto out;
|
|
}
|
|
|
|
db = kmemdup(fw->data, fw->size, GFP_KERNEL);
|
|
if (!db) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
rtnl_lock();
|
|
if (!IS_ERR_OR_NULL(regdb))
|
|
kfree(regdb);
|
|
regdb = db;
|
|
rtnl_unlock();
|
|
|
|
out:
|
|
release_firmware(fw);
|
|
return err;
|
|
}
|
|
|
|
static bool reg_query_database(struct regulatory_request *request)
|
|
{
|
|
/* query internal regulatory database (if it exists) */
|
|
if (reg_query_builtin(request->alpha2) == 0)
|
|
return true;
|
|
|
|
if (query_regdb_file(request->alpha2) == 0)
|
|
return true;
|
|
|
|
if (call_crda(request->alpha2) == 0)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool reg_is_valid_request(const char *alpha2)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (!lr || lr->processed)
|
|
return false;
|
|
|
|
return alpha2_equal(lr->alpha2, alpha2);
|
|
}
|
|
|
|
static const struct ieee80211_regdomain *reg_get_regdomain(struct wiphy *wiphy)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
/*
|
|
* Follow the driver's regulatory domain, if present, unless a country
|
|
* IE has been processed or a user wants to help complaince further
|
|
*/
|
|
if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
|
|
lr->initiator != NL80211_REGDOM_SET_BY_USER &&
|
|
wiphy->regd)
|
|
return get_wiphy_regdom(wiphy);
|
|
|
|
return get_cfg80211_regdom();
|
|
}
|
|
|
|
static unsigned int
|
|
reg_get_max_bandwidth_from_range(const struct ieee80211_regdomain *rd,
|
|
const struct ieee80211_reg_rule *rule)
|
|
{
|
|
const struct ieee80211_freq_range *freq_range = &rule->freq_range;
|
|
const struct ieee80211_freq_range *freq_range_tmp;
|
|
const struct ieee80211_reg_rule *tmp;
|
|
u32 start_freq, end_freq, idx, no;
|
|
|
|
for (idx = 0; idx < rd->n_reg_rules; idx++)
|
|
if (rule == &rd->reg_rules[idx])
|
|
break;
|
|
|
|
if (idx == rd->n_reg_rules)
|
|
return 0;
|
|
|
|
/* get start_freq */
|
|
no = idx;
|
|
|
|
while (no) {
|
|
tmp = &rd->reg_rules[--no];
|
|
freq_range_tmp = &tmp->freq_range;
|
|
|
|
if (freq_range_tmp->end_freq_khz < freq_range->start_freq_khz)
|
|
break;
|
|
|
|
freq_range = freq_range_tmp;
|
|
}
|
|
|
|
start_freq = freq_range->start_freq_khz;
|
|
|
|
/* get end_freq */
|
|
freq_range = &rule->freq_range;
|
|
no = idx;
|
|
|
|
while (no < rd->n_reg_rules - 1) {
|
|
tmp = &rd->reg_rules[++no];
|
|
freq_range_tmp = &tmp->freq_range;
|
|
|
|
if (freq_range_tmp->start_freq_khz > freq_range->end_freq_khz)
|
|
break;
|
|
|
|
freq_range = freq_range_tmp;
|
|
}
|
|
|
|
end_freq = freq_range->end_freq_khz;
|
|
|
|
return end_freq - start_freq;
|
|
}
|
|
|
|
unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
|
|
const struct ieee80211_reg_rule *rule)
|
|
{
|
|
unsigned int bw = reg_get_max_bandwidth_from_range(rd, rule);
|
|
|
|
if (rule->flags & NL80211_RRF_NO_160MHZ)
|
|
bw = min_t(unsigned int, bw, MHZ_TO_KHZ(80));
|
|
if (rule->flags & NL80211_RRF_NO_80MHZ)
|
|
bw = min_t(unsigned int, bw, MHZ_TO_KHZ(40));
|
|
|
|
/*
|
|
* HT40+/HT40- limits are handled per-channel. Only limit BW if both
|
|
* are not allowed.
|
|
*/
|
|
if (rule->flags & NL80211_RRF_NO_HT40MINUS &&
|
|
rule->flags & NL80211_RRF_NO_HT40PLUS)
|
|
bw = min_t(unsigned int, bw, MHZ_TO_KHZ(20));
|
|
|
|
return bw;
|
|
}
|
|
|
|
/* Sanity check on a regulatory rule */
|
|
static bool is_valid_reg_rule(const struct ieee80211_reg_rule *rule)
|
|
{
|
|
const struct ieee80211_freq_range *freq_range = &rule->freq_range;
|
|
u32 freq_diff;
|
|
|
|
if (freq_range->start_freq_khz <= 0 || freq_range->end_freq_khz <= 0)
|
|
return false;
|
|
|
|
if (freq_range->start_freq_khz > freq_range->end_freq_khz)
|
|
return false;
|
|
|
|
freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz;
|
|
|
|
if (freq_range->end_freq_khz <= freq_range->start_freq_khz ||
|
|
freq_range->max_bandwidth_khz > freq_diff)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool is_valid_rd(const struct ieee80211_regdomain *rd)
|
|
{
|
|
const struct ieee80211_reg_rule *reg_rule = NULL;
|
|
unsigned int i;
|
|
|
|
if (!rd->n_reg_rules)
|
|
return false;
|
|
|
|
if (WARN_ON(rd->n_reg_rules > NL80211_MAX_SUPP_REG_RULES))
|
|
return false;
|
|
|
|
for (i = 0; i < rd->n_reg_rules; i++) {
|
|
reg_rule = &rd->reg_rules[i];
|
|
if (!is_valid_reg_rule(reg_rule))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* freq_in_rule_band - tells us if a frequency is in a frequency band
|
|
* @freq_range: frequency rule we want to query
|
|
* @freq_khz: frequency we are inquiring about
|
|
*
|
|
* This lets us know if a specific frequency rule is or is not relevant to
|
|
* a specific frequency's band. Bands are device specific and artificial
|
|
* definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"),
|
|
* however it is safe for now to assume that a frequency rule should not be
|
|
* part of a frequency's band if the start freq or end freq are off by more
|
|
* than 2 GHz for the 2.4 and 5 GHz bands, and by more than 20 GHz for the
|
|
* 60 GHz band.
|
|
* This resolution can be lowered and should be considered as we add
|
|
* regulatory rule support for other "bands".
|
|
**/
|
|
static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range,
|
|
u32 freq_khz)
|
|
{
|
|
#define ONE_GHZ_IN_KHZ 1000000
|
|
/*
|
|
* From 802.11ad: directional multi-gigabit (DMG):
|
|
* Pertaining to operation in a frequency band containing a channel
|
|
* with the Channel starting frequency above 45 GHz.
|
|
*/
|
|
u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ?
|
|
20 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ;
|
|
if (abs(freq_khz - freq_range->start_freq_khz) <= limit)
|
|
return true;
|
|
if (abs(freq_khz - freq_range->end_freq_khz) <= limit)
|
|
return true;
|
|
return false;
|
|
#undef ONE_GHZ_IN_KHZ
|
|
}
|
|
|
|
/*
|
|
* Later on we can perhaps use the more restrictive DFS
|
|
* region but we don't have information for that yet so
|
|
* for now simply disallow conflicts.
|
|
*/
|
|
static enum nl80211_dfs_regions
|
|
reg_intersect_dfs_region(const enum nl80211_dfs_regions dfs_region1,
|
|
const enum nl80211_dfs_regions dfs_region2)
|
|
{
|
|
if (dfs_region1 != dfs_region2)
|
|
return NL80211_DFS_UNSET;
|
|
return dfs_region1;
|
|
}
|
|
|
|
static void reg_wmm_rules_intersect(const struct ieee80211_wmm_ac *wmm_ac1,
|
|
const struct ieee80211_wmm_ac *wmm_ac2,
|
|
struct ieee80211_wmm_ac *intersect)
|
|
{
|
|
intersect->cw_min = max_t(u16, wmm_ac1->cw_min, wmm_ac2->cw_min);
|
|
intersect->cw_max = max_t(u16, wmm_ac1->cw_max, wmm_ac2->cw_max);
|
|
intersect->cot = min_t(u16, wmm_ac1->cot, wmm_ac2->cot);
|
|
intersect->aifsn = max_t(u8, wmm_ac1->aifsn, wmm_ac2->aifsn);
|
|
}
|
|
|
|
/*
|
|
* Helper for regdom_intersect(), this does the real
|
|
* mathematical intersection fun
|
|
*/
|
|
static int reg_rules_intersect(const struct ieee80211_regdomain *rd1,
|
|
const struct ieee80211_regdomain *rd2,
|
|
const struct ieee80211_reg_rule *rule1,
|
|
const struct ieee80211_reg_rule *rule2,
|
|
struct ieee80211_reg_rule *intersected_rule)
|
|
{
|
|
const struct ieee80211_freq_range *freq_range1, *freq_range2;
|
|
struct ieee80211_freq_range *freq_range;
|
|
const struct ieee80211_power_rule *power_rule1, *power_rule2;
|
|
struct ieee80211_power_rule *power_rule;
|
|
const struct ieee80211_wmm_rule *wmm_rule1, *wmm_rule2;
|
|
struct ieee80211_wmm_rule *wmm_rule;
|
|
u32 freq_diff, max_bandwidth1, max_bandwidth2;
|
|
|
|
freq_range1 = &rule1->freq_range;
|
|
freq_range2 = &rule2->freq_range;
|
|
freq_range = &intersected_rule->freq_range;
|
|
|
|
power_rule1 = &rule1->power_rule;
|
|
power_rule2 = &rule2->power_rule;
|
|
power_rule = &intersected_rule->power_rule;
|
|
|
|
wmm_rule1 = &rule1->wmm_rule;
|
|
wmm_rule2 = &rule2->wmm_rule;
|
|
wmm_rule = &intersected_rule->wmm_rule;
|
|
|
|
freq_range->start_freq_khz = max(freq_range1->start_freq_khz,
|
|
freq_range2->start_freq_khz);
|
|
freq_range->end_freq_khz = min(freq_range1->end_freq_khz,
|
|
freq_range2->end_freq_khz);
|
|
|
|
max_bandwidth1 = freq_range1->max_bandwidth_khz;
|
|
max_bandwidth2 = freq_range2->max_bandwidth_khz;
|
|
|
|
if (rule1->flags & NL80211_RRF_AUTO_BW)
|
|
max_bandwidth1 = reg_get_max_bandwidth(rd1, rule1);
|
|
if (rule2->flags & NL80211_RRF_AUTO_BW)
|
|
max_bandwidth2 = reg_get_max_bandwidth(rd2, rule2);
|
|
|
|
freq_range->max_bandwidth_khz = min(max_bandwidth1, max_bandwidth2);
|
|
|
|
intersected_rule->flags = rule1->flags | rule2->flags;
|
|
|
|
/*
|
|
* In case NL80211_RRF_AUTO_BW requested for both rules
|
|
* set AUTO_BW in intersected rule also. Next we will
|
|
* calculate BW correctly in handle_channel function.
|
|
* In other case remove AUTO_BW flag while we calculate
|
|
* maximum bandwidth correctly and auto calculation is
|
|
* not required.
|
|
*/
|
|
if ((rule1->flags & NL80211_RRF_AUTO_BW) &&
|
|
(rule2->flags & NL80211_RRF_AUTO_BW))
|
|
intersected_rule->flags |= NL80211_RRF_AUTO_BW;
|
|
else
|
|
intersected_rule->flags &= ~NL80211_RRF_AUTO_BW;
|
|
|
|
freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz;
|
|
if (freq_range->max_bandwidth_khz > freq_diff)
|
|
freq_range->max_bandwidth_khz = freq_diff;
|
|
|
|
power_rule->max_eirp = min(power_rule1->max_eirp,
|
|
power_rule2->max_eirp);
|
|
power_rule->max_antenna_gain = min(power_rule1->max_antenna_gain,
|
|
power_rule2->max_antenna_gain);
|
|
|
|
intersected_rule->dfs_cac_ms = max(rule1->dfs_cac_ms,
|
|
rule2->dfs_cac_ms);
|
|
|
|
if (rule1->has_wmm && rule2->has_wmm) {
|
|
u8 ac;
|
|
|
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
|
|
reg_wmm_rules_intersect(&wmm_rule1->client[ac],
|
|
&wmm_rule2->client[ac],
|
|
&wmm_rule->client[ac]);
|
|
reg_wmm_rules_intersect(&wmm_rule1->ap[ac],
|
|
&wmm_rule2->ap[ac],
|
|
&wmm_rule->ap[ac]);
|
|
}
|
|
|
|
intersected_rule->has_wmm = true;
|
|
} else if (rule1->has_wmm) {
|
|
*wmm_rule = *wmm_rule1;
|
|
intersected_rule->has_wmm = true;
|
|
} else if (rule2->has_wmm) {
|
|
*wmm_rule = *wmm_rule2;
|
|
intersected_rule->has_wmm = true;
|
|
} else {
|
|
intersected_rule->has_wmm = false;
|
|
}
|
|
|
|
if (!is_valid_reg_rule(intersected_rule))
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* check whether old rule contains new rule */
|
|
static bool rule_contains(struct ieee80211_reg_rule *r1,
|
|
struct ieee80211_reg_rule *r2)
|
|
{
|
|
/* for simplicity, currently consider only same flags */
|
|
if (r1->flags != r2->flags)
|
|
return false;
|
|
|
|
/* verify r1 is more restrictive */
|
|
if ((r1->power_rule.max_antenna_gain >
|
|
r2->power_rule.max_antenna_gain) ||
|
|
r1->power_rule.max_eirp > r2->power_rule.max_eirp)
|
|
return false;
|
|
|
|
/* make sure r2's range is contained within r1 */
|
|
if (r1->freq_range.start_freq_khz > r2->freq_range.start_freq_khz ||
|
|
r1->freq_range.end_freq_khz < r2->freq_range.end_freq_khz)
|
|
return false;
|
|
|
|
/* and finally verify that r1.max_bw >= r2.max_bw */
|
|
if (r1->freq_range.max_bandwidth_khz <
|
|
r2->freq_range.max_bandwidth_khz)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/* add or extend current rules. do nothing if rule is already contained */
|
|
static void add_rule(struct ieee80211_reg_rule *rule,
|
|
struct ieee80211_reg_rule *reg_rules, u32 *n_rules)
|
|
{
|
|
struct ieee80211_reg_rule *tmp_rule;
|
|
int i;
|
|
|
|
for (i = 0; i < *n_rules; i++) {
|
|
tmp_rule = ®_rules[i];
|
|
/* rule is already contained - do nothing */
|
|
if (rule_contains(tmp_rule, rule))
|
|
return;
|
|
|
|
/* extend rule if possible */
|
|
if (rule_contains(rule, tmp_rule)) {
|
|
memcpy(tmp_rule, rule, sizeof(*rule));
|
|
return;
|
|
}
|
|
}
|
|
|
|
memcpy(®_rules[*n_rules], rule, sizeof(*rule));
|
|
(*n_rules)++;
|
|
}
|
|
|
|
/**
|
|
* regdom_intersect - do the intersection between two regulatory domains
|
|
* @rd1: first regulatory domain
|
|
* @rd2: second regulatory domain
|
|
*
|
|
* Use this function to get the intersection between two regulatory domains.
|
|
* Once completed we will mark the alpha2 for the rd as intersected, "98",
|
|
* as no one single alpha2 can represent this regulatory domain.
|
|
*
|
|
* Returns a pointer to the regulatory domain structure which will hold the
|
|
* resulting intersection of rules between rd1 and rd2. We will
|
|
* kzalloc() this structure for you.
|
|
*/
|
|
static struct ieee80211_regdomain *
|
|
regdom_intersect(const struct ieee80211_regdomain *rd1,
|
|
const struct ieee80211_regdomain *rd2)
|
|
{
|
|
int r, size_of_regd;
|
|
unsigned int x, y;
|
|
unsigned int num_rules = 0;
|
|
const struct ieee80211_reg_rule *rule1, *rule2;
|
|
struct ieee80211_reg_rule intersected_rule;
|
|
struct ieee80211_regdomain *rd;
|
|
|
|
if (!rd1 || !rd2)
|
|
return NULL;
|
|
|
|
/*
|
|
* First we get a count of the rules we'll need, then we actually
|
|
* build them. This is to so we can malloc() and free() a
|
|
* regdomain once. The reason we use reg_rules_intersect() here
|
|
* is it will return -EINVAL if the rule computed makes no sense.
|
|
* All rules that do check out OK are valid.
|
|
*/
|
|
|
|
for (x = 0; x < rd1->n_reg_rules; x++) {
|
|
rule1 = &rd1->reg_rules[x];
|
|
for (y = 0; y < rd2->n_reg_rules; y++) {
|
|
rule2 = &rd2->reg_rules[y];
|
|
if (!reg_rules_intersect(rd1, rd2, rule1, rule2,
|
|
&intersected_rule))
|
|
num_rules++;
|
|
}
|
|
}
|
|
|
|
if (!num_rules)
|
|
return NULL;
|
|
|
|
size_of_regd = sizeof(struct ieee80211_regdomain) +
|
|
num_rules * sizeof(struct ieee80211_reg_rule);
|
|
|
|
rd = kzalloc(size_of_regd, GFP_KERNEL);
|
|
if (!rd)
|
|
return NULL;
|
|
|
|
for (x = 0; x < rd1->n_reg_rules; x++) {
|
|
rule1 = &rd1->reg_rules[x];
|
|
for (y = 0; y < rd2->n_reg_rules; y++) {
|
|
rule2 = &rd2->reg_rules[y];
|
|
r = reg_rules_intersect(rd1, rd2, rule1, rule2,
|
|
&intersected_rule);
|
|
/*
|
|
* No need to memset here the intersected rule here as
|
|
* we're not using the stack anymore
|
|
*/
|
|
if (r)
|
|
continue;
|
|
|
|
add_rule(&intersected_rule, rd->reg_rules,
|
|
&rd->n_reg_rules);
|
|
}
|
|
}
|
|
|
|
rd->alpha2[0] = '9';
|
|
rd->alpha2[1] = '8';
|
|
rd->dfs_region = reg_intersect_dfs_region(rd1->dfs_region,
|
|
rd2->dfs_region);
|
|
|
|
return rd;
|
|
}
|
|
|
|
/*
|
|
* XXX: add support for the rest of enum nl80211_reg_rule_flags, we may
|
|
* want to just have the channel structure use these
|
|
*/
|
|
static u32 map_regdom_flags(u32 rd_flags)
|
|
{
|
|
u32 channel_flags = 0;
|
|
if (rd_flags & NL80211_RRF_NO_IR_ALL)
|
|
channel_flags |= IEEE80211_CHAN_NO_IR;
|
|
if (rd_flags & NL80211_RRF_DFS)
|
|
channel_flags |= IEEE80211_CHAN_RADAR;
|
|
if (rd_flags & NL80211_RRF_NO_OFDM)
|
|
channel_flags |= IEEE80211_CHAN_NO_OFDM;
|
|
if (rd_flags & NL80211_RRF_NO_OUTDOOR)
|
|
channel_flags |= IEEE80211_CHAN_INDOOR_ONLY;
|
|
if (rd_flags & NL80211_RRF_IR_CONCURRENT)
|
|
channel_flags |= IEEE80211_CHAN_IR_CONCURRENT;
|
|
if (rd_flags & NL80211_RRF_NO_HT40MINUS)
|
|
channel_flags |= IEEE80211_CHAN_NO_HT40MINUS;
|
|
if (rd_flags & NL80211_RRF_NO_HT40PLUS)
|
|
channel_flags |= IEEE80211_CHAN_NO_HT40PLUS;
|
|
if (rd_flags & NL80211_RRF_NO_80MHZ)
|
|
channel_flags |= IEEE80211_CHAN_NO_80MHZ;
|
|
if (rd_flags & NL80211_RRF_NO_160MHZ)
|
|
channel_flags |= IEEE80211_CHAN_NO_160MHZ;
|
|
return channel_flags;
|
|
}
|
|
|
|
static const struct ieee80211_reg_rule *
|
|
freq_reg_info_regd(u32 center_freq,
|
|
const struct ieee80211_regdomain *regd, u32 bw)
|
|
{
|
|
int i;
|
|
bool band_rule_found = false;
|
|
bool bw_fits = false;
|
|
|
|
if (!regd)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
for (i = 0; i < regd->n_reg_rules; i++) {
|
|
const struct ieee80211_reg_rule *rr;
|
|
const struct ieee80211_freq_range *fr = NULL;
|
|
|
|
rr = ®d->reg_rules[i];
|
|
fr = &rr->freq_range;
|
|
|
|
/*
|
|
* We only need to know if one frequency rule was
|
|
* was in center_freq's band, that's enough, so lets
|
|
* not overwrite it once found
|
|
*/
|
|
if (!band_rule_found)
|
|
band_rule_found = freq_in_rule_band(fr, center_freq);
|
|
|
|
bw_fits = cfg80211_does_bw_fit_range(fr, center_freq, bw);
|
|
|
|
if (band_rule_found && bw_fits)
|
|
return rr;
|
|
}
|
|
|
|
if (!band_rule_found)
|
|
return ERR_PTR(-ERANGE);
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
static const struct ieee80211_reg_rule *
|
|
__freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 min_bw)
|
|
{
|
|
const struct ieee80211_regdomain *regd = reg_get_regdomain(wiphy);
|
|
const struct ieee80211_reg_rule *reg_rule = NULL;
|
|
u32 bw;
|
|
|
|
for (bw = MHZ_TO_KHZ(20); bw >= min_bw; bw = bw / 2) {
|
|
reg_rule = freq_reg_info_regd(center_freq, regd, bw);
|
|
if (!IS_ERR(reg_rule))
|
|
return reg_rule;
|
|
}
|
|
|
|
return reg_rule;
|
|
}
|
|
|
|
const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
|
|
u32 center_freq)
|
|
{
|
|
return __freq_reg_info(wiphy, center_freq, MHZ_TO_KHZ(20));
|
|
}
|
|
EXPORT_SYMBOL(freq_reg_info);
|
|
|
|
const char *reg_initiator_name(enum nl80211_reg_initiator initiator)
|
|
{
|
|
switch (initiator) {
|
|
case NL80211_REGDOM_SET_BY_CORE:
|
|
return "core";
|
|
case NL80211_REGDOM_SET_BY_USER:
|
|
return "user";
|
|
case NL80211_REGDOM_SET_BY_DRIVER:
|
|
return "driver";
|
|
case NL80211_REGDOM_SET_BY_COUNTRY_IE:
|
|
return "country element";
|
|
default:
|
|
WARN_ON(1);
|
|
return "bug";
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(reg_initiator_name);
|
|
|
|
static uint32_t reg_rule_to_chan_bw_flags(const struct ieee80211_regdomain *regd,
|
|
const struct ieee80211_reg_rule *reg_rule,
|
|
const struct ieee80211_channel *chan)
|
|
{
|
|
const struct ieee80211_freq_range *freq_range = NULL;
|
|
u32 max_bandwidth_khz, center_freq_khz, bw_flags = 0;
|
|
|
|
freq_range = ®_rule->freq_range;
|
|
|
|
max_bandwidth_khz = freq_range->max_bandwidth_khz;
|
|
center_freq_khz = ieee80211_channel_to_khz(chan);
|
|
/* Check if auto calculation requested */
|
|
if (reg_rule->flags & NL80211_RRF_AUTO_BW)
|
|
max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule);
|
|
|
|
/* If we get a reg_rule we can assume that at least 5Mhz fit */
|
|
if (!cfg80211_does_bw_fit_range(freq_range,
|
|
center_freq_khz,
|
|
MHZ_TO_KHZ(10)))
|
|
bw_flags |= IEEE80211_CHAN_NO_10MHZ;
|
|
if (!cfg80211_does_bw_fit_range(freq_range,
|
|
center_freq_khz,
|
|
MHZ_TO_KHZ(20)))
|
|
bw_flags |= IEEE80211_CHAN_NO_20MHZ;
|
|
|
|
if (max_bandwidth_khz < MHZ_TO_KHZ(10))
|
|
bw_flags |= IEEE80211_CHAN_NO_10MHZ;
|
|
if (max_bandwidth_khz < MHZ_TO_KHZ(20))
|
|
bw_flags |= IEEE80211_CHAN_NO_20MHZ;
|
|
if (max_bandwidth_khz < MHZ_TO_KHZ(40))
|
|
bw_flags |= IEEE80211_CHAN_NO_HT40;
|
|
if (max_bandwidth_khz < MHZ_TO_KHZ(80))
|
|
bw_flags |= IEEE80211_CHAN_NO_80MHZ;
|
|
if (max_bandwidth_khz < MHZ_TO_KHZ(160))
|
|
bw_flags |= IEEE80211_CHAN_NO_160MHZ;
|
|
return bw_flags;
|
|
}
|
|
|
|
/*
|
|
* Note that right now we assume the desired channel bandwidth
|
|
* is always 20 MHz for each individual channel (HT40 uses 20 MHz
|
|
* per channel, the primary and the extension channel).
|
|
*/
|
|
static void handle_channel(struct wiphy *wiphy,
|
|
enum nl80211_reg_initiator initiator,
|
|
struct ieee80211_channel *chan)
|
|
{
|
|
u32 flags, bw_flags = 0;
|
|
const struct ieee80211_reg_rule *reg_rule = NULL;
|
|
const struct ieee80211_power_rule *power_rule = NULL;
|
|
struct wiphy *request_wiphy = NULL;
|
|
struct regulatory_request *lr = get_last_request();
|
|
const struct ieee80211_regdomain *regd;
|
|
|
|
request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx);
|
|
|
|
flags = chan->orig_flags;
|
|
|
|
reg_rule = freq_reg_info(wiphy, ieee80211_channel_to_khz(chan));
|
|
if (IS_ERR(reg_rule)) {
|
|
/*
|
|
* We will disable all channels that do not match our
|
|
* received regulatory rule unless the hint is coming
|
|
* from a Country IE and the Country IE had no information
|
|
* about a band. The IEEE 802.11 spec allows for an AP
|
|
* to send only a subset of the regulatory rules allowed,
|
|
* so an AP in the US that only supports 2.4 GHz may only send
|
|
* a country IE with information for the 2.4 GHz band
|
|
* while 5 GHz is still supported.
|
|
*/
|
|
if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
|
|
PTR_ERR(reg_rule) == -ERANGE)
|
|
return;
|
|
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
|
|
request_wiphy && request_wiphy == wiphy &&
|
|
request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) {
|
|
pr_debug("Disabling freq %d.%03d MHz for good\n",
|
|
chan->center_freq, chan->freq_offset);
|
|
chan->orig_flags |= IEEE80211_CHAN_DISABLED;
|
|
chan->flags = chan->orig_flags;
|
|
} else {
|
|
pr_debug("Disabling freq %d.%03d MHz\n",
|
|
chan->center_freq, chan->freq_offset);
|
|
chan->flags |= IEEE80211_CHAN_DISABLED;
|
|
}
|
|
return;
|
|
}
|
|
|
|
regd = reg_get_regdomain(wiphy);
|
|
|
|
power_rule = ®_rule->power_rule;
|
|
bw_flags = reg_rule_to_chan_bw_flags(regd, reg_rule, chan);
|
|
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
|
|
request_wiphy && request_wiphy == wiphy &&
|
|
request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) {
|
|
/*
|
|
* This guarantees the driver's requested regulatory domain
|
|
* will always be used as a base for further regulatory
|
|
* settings
|
|
*/
|
|
chan->flags = chan->orig_flags =
|
|
map_regdom_flags(reg_rule->flags) | bw_flags;
|
|
chan->max_antenna_gain = chan->orig_mag =
|
|
(int) MBI_TO_DBI(power_rule->max_antenna_gain);
|
|
chan->max_reg_power = chan->max_power = chan->orig_mpwr =
|
|
(int) MBM_TO_DBM(power_rule->max_eirp);
|
|
|
|
if (chan->flags & IEEE80211_CHAN_RADAR) {
|
|
chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
|
|
if (reg_rule->dfs_cac_ms)
|
|
chan->dfs_cac_ms = reg_rule->dfs_cac_ms;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
chan->dfs_state = NL80211_DFS_USABLE;
|
|
chan->dfs_state_entered = jiffies;
|
|
|
|
chan->beacon_found = false;
|
|
chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags);
|
|
chan->max_antenna_gain =
|
|
min_t(int, chan->orig_mag,
|
|
MBI_TO_DBI(power_rule->max_antenna_gain));
|
|
chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp);
|
|
|
|
if (chan->flags & IEEE80211_CHAN_RADAR) {
|
|
if (reg_rule->dfs_cac_ms)
|
|
chan->dfs_cac_ms = reg_rule->dfs_cac_ms;
|
|
else
|
|
chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
|
|
}
|
|
|
|
if (chan->orig_mpwr) {
|
|
/*
|
|
* Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER
|
|
* will always follow the passed country IE power settings.
|
|
*/
|
|
if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
|
|
wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_FOLLOW_POWER)
|
|
chan->max_power = chan->max_reg_power;
|
|
else
|
|
chan->max_power = min(chan->orig_mpwr,
|
|
chan->max_reg_power);
|
|
} else
|
|
chan->max_power = chan->max_reg_power;
|
|
}
|
|
|
|
static void handle_band(struct wiphy *wiphy,
|
|
enum nl80211_reg_initiator initiator,
|
|
struct ieee80211_supported_band *sband)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (!sband)
|
|
return;
|
|
|
|
for (i = 0; i < sband->n_channels; i++)
|
|
handle_channel(wiphy, initiator, &sband->channels[i]);
|
|
}
|
|
|
|
static bool reg_request_cell_base(struct regulatory_request *request)
|
|
{
|
|
if (request->initiator != NL80211_REGDOM_SET_BY_USER)
|
|
return false;
|
|
return request->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE;
|
|
}
|
|
|
|
bool reg_last_request_cell_base(void)
|
|
{
|
|
return reg_request_cell_base(get_last_request());
|
|
}
|
|
|
|
#ifdef CONFIG_CFG80211_REG_CELLULAR_HINTS
|
|
/* Core specific check */
|
|
static enum reg_request_treatment
|
|
reg_ignore_cell_hint(struct regulatory_request *pending_request)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (!reg_num_devs_support_basehint)
|
|
return REG_REQ_IGNORE;
|
|
|
|
if (reg_request_cell_base(lr) &&
|
|
!regdom_changes(pending_request->alpha2))
|
|
return REG_REQ_ALREADY_SET;
|
|
|
|
return REG_REQ_OK;
|
|
}
|
|
|
|
/* Device specific check */
|
|
static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy)
|
|
{
|
|
return !(wiphy->features & NL80211_FEATURE_CELL_BASE_REG_HINTS);
|
|
}
|
|
#else
|
|
static enum reg_request_treatment
|
|
reg_ignore_cell_hint(struct regulatory_request *pending_request)
|
|
{
|
|
return REG_REQ_IGNORE;
|
|
}
|
|
|
|
static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy)
|
|
{
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
static bool wiphy_strict_alpha2_regd(struct wiphy *wiphy)
|
|
{
|
|
if (wiphy->regulatory_flags & REGULATORY_STRICT_REG &&
|
|
!(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static bool ignore_reg_update(struct wiphy *wiphy,
|
|
enum nl80211_reg_initiator initiator)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED)
|
|
return true;
|
|
|
|
if (!lr) {
|
|
pr_debug("Ignoring regulatory request set by %s since last_request is not set\n",
|
|
reg_initiator_name(initiator));
|
|
return true;
|
|
}
|
|
|
|
if (initiator == NL80211_REGDOM_SET_BY_CORE &&
|
|
wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) {
|
|
pr_debug("Ignoring regulatory request set by %s since the driver uses its own custom regulatory domain\n",
|
|
reg_initiator_name(initiator));
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* wiphy->regd will be set once the device has its own
|
|
* desired regulatory domain set
|
|
*/
|
|
if (wiphy_strict_alpha2_regd(wiphy) && !wiphy->regd &&
|
|
initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
|
|
!is_world_regdom(lr->alpha2)) {
|
|
pr_debug("Ignoring regulatory request set by %s since the driver requires its own regulatory domain to be set first\n",
|
|
reg_initiator_name(initiator));
|
|
return true;
|
|
}
|
|
|
|
if (reg_request_cell_base(lr))
|
|
return reg_dev_ignore_cell_hint(wiphy);
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool reg_is_world_roaming(struct wiphy *wiphy)
|
|
{
|
|
const struct ieee80211_regdomain *cr = get_cfg80211_regdom();
|
|
const struct ieee80211_regdomain *wr = get_wiphy_regdom(wiphy);
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (is_world_regdom(cr->alpha2) || (wr && is_world_regdom(wr->alpha2)))
|
|
return true;
|
|
|
|
if (lr && lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
|
|
wiphy->regulatory_flags & REGULATORY_CUSTOM_REG)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx,
|
|
struct reg_beacon *reg_beacon)
|
|
{
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_channel *chan;
|
|
bool channel_changed = false;
|
|
struct ieee80211_channel chan_before;
|
|
|
|
sband = wiphy->bands[reg_beacon->chan.band];
|
|
chan = &sband->channels[chan_idx];
|
|
|
|
if (likely(!ieee80211_channel_equal(chan, ®_beacon->chan)))
|
|
return;
|
|
|
|
if (chan->beacon_found)
|
|
return;
|
|
|
|
chan->beacon_found = true;
|
|
|
|
if (!reg_is_world_roaming(wiphy))
|
|
return;
|
|
|
|
if (wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS)
|
|
return;
|
|
|
|
chan_before = *chan;
|
|
|
|
if (chan->flags & IEEE80211_CHAN_NO_IR) {
|
|
chan->flags &= ~IEEE80211_CHAN_NO_IR;
|
|
channel_changed = true;
|
|
}
|
|
|
|
if (channel_changed)
|
|
nl80211_send_beacon_hint_event(wiphy, &chan_before, chan);
|
|
}
|
|
|
|
/*
|
|
* Called when a scan on a wiphy finds a beacon on
|
|
* new channel
|
|
*/
|
|
static void wiphy_update_new_beacon(struct wiphy *wiphy,
|
|
struct reg_beacon *reg_beacon)
|
|
{
|
|
unsigned int i;
|
|
struct ieee80211_supported_band *sband;
|
|
|
|
if (!wiphy->bands[reg_beacon->chan.band])
|
|
return;
|
|
|
|
sband = wiphy->bands[reg_beacon->chan.band];
|
|
|
|
for (i = 0; i < sband->n_channels; i++)
|
|
handle_reg_beacon(wiphy, i, reg_beacon);
|
|
}
|
|
|
|
/*
|
|
* Called upon reg changes or a new wiphy is added
|
|
*/
|
|
static void wiphy_update_beacon_reg(struct wiphy *wiphy)
|
|
{
|
|
unsigned int i;
|
|
struct ieee80211_supported_band *sband;
|
|
struct reg_beacon *reg_beacon;
|
|
|
|
list_for_each_entry(reg_beacon, ®_beacon_list, list) {
|
|
if (!wiphy->bands[reg_beacon->chan.band])
|
|
continue;
|
|
sband = wiphy->bands[reg_beacon->chan.band];
|
|
for (i = 0; i < sband->n_channels; i++)
|
|
handle_reg_beacon(wiphy, i, reg_beacon);
|
|
}
|
|
}
|
|
|
|
/* Reap the advantages of previously found beacons */
|
|
static void reg_process_beacons(struct wiphy *wiphy)
|
|
{
|
|
/*
|
|
* Means we are just firing up cfg80211, so no beacons would
|
|
* have been processed yet.
|
|
*/
|
|
if (!last_request)
|
|
return;
|
|
wiphy_update_beacon_reg(wiphy);
|
|
}
|
|
|
|
static bool is_ht40_allowed(struct ieee80211_channel *chan)
|
|
{
|
|
if (!chan)
|
|
return false;
|
|
if (chan->flags & IEEE80211_CHAN_DISABLED)
|
|
return false;
|
|
/* This would happen when regulatory rules disallow HT40 completely */
|
|
if ((chan->flags & IEEE80211_CHAN_NO_HT40) == IEEE80211_CHAN_NO_HT40)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static void reg_process_ht_flags_channel(struct wiphy *wiphy,
|
|
struct ieee80211_channel *channel)
|
|
{
|
|
struct ieee80211_supported_band *sband = wiphy->bands[channel->band];
|
|
struct ieee80211_channel *channel_before = NULL, *channel_after = NULL;
|
|
const struct ieee80211_regdomain *regd;
|
|
unsigned int i;
|
|
u32 flags;
|
|
|
|
if (!is_ht40_allowed(channel)) {
|
|
channel->flags |= IEEE80211_CHAN_NO_HT40;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We need to ensure the extension channels exist to
|
|
* be able to use HT40- or HT40+, this finds them (or not)
|
|
*/
|
|
for (i = 0; i < sband->n_channels; i++) {
|
|
struct ieee80211_channel *c = &sband->channels[i];
|
|
|
|
if (c->center_freq == (channel->center_freq - 20))
|
|
channel_before = c;
|
|
if (c->center_freq == (channel->center_freq + 20))
|
|
channel_after = c;
|
|
}
|
|
|
|
flags = 0;
|
|
regd = get_wiphy_regdom(wiphy);
|
|
if (regd) {
|
|
const struct ieee80211_reg_rule *reg_rule =
|
|
freq_reg_info_regd(MHZ_TO_KHZ(channel->center_freq),
|
|
regd, MHZ_TO_KHZ(20));
|
|
|
|
if (!IS_ERR(reg_rule))
|
|
flags = reg_rule->flags;
|
|
}
|
|
|
|
/*
|
|
* Please note that this assumes target bandwidth is 20 MHz,
|
|
* if that ever changes we also need to change the below logic
|
|
* to include that as well.
|
|
*/
|
|
if (!is_ht40_allowed(channel_before) ||
|
|
flags & NL80211_RRF_NO_HT40MINUS)
|
|
channel->flags |= IEEE80211_CHAN_NO_HT40MINUS;
|
|
else
|
|
channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
|
|
|
|
if (!is_ht40_allowed(channel_after) ||
|
|
flags & NL80211_RRF_NO_HT40PLUS)
|
|
channel->flags |= IEEE80211_CHAN_NO_HT40PLUS;
|
|
else
|
|
channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
|
|
}
|
|
|
|
static void reg_process_ht_flags_band(struct wiphy *wiphy,
|
|
struct ieee80211_supported_band *sband)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (!sband)
|
|
return;
|
|
|
|
for (i = 0; i < sband->n_channels; i++)
|
|
reg_process_ht_flags_channel(wiphy, &sband->channels[i]);
|
|
}
|
|
|
|
static void reg_process_ht_flags(struct wiphy *wiphy)
|
|
{
|
|
enum nl80211_band band;
|
|
|
|
if (!wiphy)
|
|
return;
|
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++)
|
|
reg_process_ht_flags_band(wiphy, wiphy->bands[band]);
|
|
}
|
|
|
|
static void reg_call_notifier(struct wiphy *wiphy,
|
|
struct regulatory_request *request)
|
|
{
|
|
if (wiphy->reg_notifier)
|
|
wiphy->reg_notifier(wiphy, request);
|
|
}
|
|
|
|
static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev)
|
|
{
|
|
struct cfg80211_chan_def chandef = {};
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
|
enum nl80211_iftype iftype;
|
|
|
|
wdev_lock(wdev);
|
|
iftype = wdev->iftype;
|
|
|
|
/* make sure the interface is active */
|
|
if (!wdev->netdev || !netif_running(wdev->netdev))
|
|
goto wdev_inactive_unlock;
|
|
|
|
switch (iftype) {
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_P2P_GO:
|
|
if (!wdev->beacon_interval)
|
|
goto wdev_inactive_unlock;
|
|
chandef = wdev->chandef;
|
|
break;
|
|
case NL80211_IFTYPE_ADHOC:
|
|
if (!wdev->ssid_len)
|
|
goto wdev_inactive_unlock;
|
|
chandef = wdev->chandef;
|
|
break;
|
|
case NL80211_IFTYPE_STATION:
|
|
case NL80211_IFTYPE_P2P_CLIENT:
|
|
if (!wdev->current_bss ||
|
|
!wdev->current_bss->pub.channel)
|
|
goto wdev_inactive_unlock;
|
|
|
|
if (!rdev->ops->get_channel ||
|
|
rdev_get_channel(rdev, wdev, &chandef))
|
|
cfg80211_chandef_create(&chandef,
|
|
wdev->current_bss->pub.channel,
|
|
NL80211_CHAN_NO_HT);
|
|
break;
|
|
case NL80211_IFTYPE_MONITOR:
|
|
case NL80211_IFTYPE_AP_VLAN:
|
|
case NL80211_IFTYPE_P2P_DEVICE:
|
|
/* no enforcement required */
|
|
break;
|
|
default:
|
|
/* others not implemented for now */
|
|
WARN_ON(1);
|
|
break;
|
|
}
|
|
|
|
wdev_unlock(wdev);
|
|
|
|
switch (iftype) {
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_P2P_GO:
|
|
case NL80211_IFTYPE_ADHOC:
|
|
return cfg80211_reg_can_beacon_relax(wiphy, &chandef, iftype);
|
|
case NL80211_IFTYPE_STATION:
|
|
case NL80211_IFTYPE_P2P_CLIENT:
|
|
return cfg80211_chandef_usable(wiphy, &chandef,
|
|
IEEE80211_CHAN_DISABLED);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
|
|
wdev_inactive_unlock:
|
|
wdev_unlock(wdev);
|
|
return true;
|
|
}
|
|
|
|
static void reg_leave_invalid_chans(struct wiphy *wiphy)
|
|
{
|
|
struct wireless_dev *wdev;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
|
|
|
ASSERT_RTNL();
|
|
|
|
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
|
|
if (!reg_wdev_chan_valid(wiphy, wdev))
|
|
cfg80211_leave(rdev, wdev);
|
|
}
|
|
|
|
static void reg_check_chans_work(struct work_struct *work)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
pr_debug("Verifying active interfaces after reg change\n");
|
|
rtnl_lock();
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list)
|
|
if (!(rdev->wiphy.regulatory_flags &
|
|
REGULATORY_IGNORE_STALE_KICKOFF))
|
|
reg_leave_invalid_chans(&rdev->wiphy);
|
|
|
|
rtnl_unlock();
|
|
}
|
|
|
|
static void reg_check_channels(void)
|
|
{
|
|
/*
|
|
* Give usermode a chance to do something nicer (move to another
|
|
* channel, orderly disconnection), before forcing a disconnection.
|
|
*/
|
|
mod_delayed_work(system_power_efficient_wq,
|
|
®_check_chans,
|
|
msecs_to_jiffies(REG_ENFORCE_GRACE_MS));
|
|
}
|
|
|
|
static void wiphy_update_regulatory(struct wiphy *wiphy,
|
|
enum nl80211_reg_initiator initiator)
|
|
{
|
|
enum nl80211_band band;
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (ignore_reg_update(wiphy, initiator)) {
|
|
/*
|
|
* Regulatory updates set by CORE are ignored for custom
|
|
* regulatory cards. Let us notify the changes to the driver,
|
|
* as some drivers used this to restore its orig_* reg domain.
|
|
*/
|
|
if (initiator == NL80211_REGDOM_SET_BY_CORE &&
|
|
wiphy->regulatory_flags & REGULATORY_CUSTOM_REG &&
|
|
!(wiphy->regulatory_flags &
|
|
REGULATORY_WIPHY_SELF_MANAGED))
|
|
reg_call_notifier(wiphy, lr);
|
|
return;
|
|
}
|
|
|
|
lr->dfs_region = get_cfg80211_regdom()->dfs_region;
|
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++)
|
|
handle_band(wiphy, initiator, wiphy->bands[band]);
|
|
|
|
reg_process_beacons(wiphy);
|
|
reg_process_ht_flags(wiphy);
|
|
reg_call_notifier(wiphy, lr);
|
|
}
|
|
|
|
static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
struct wiphy *wiphy;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
wiphy = &rdev->wiphy;
|
|
wiphy_update_regulatory(wiphy, initiator);
|
|
}
|
|
|
|
reg_check_channels();
|
|
}
|
|
|
|
static void handle_channel_custom(struct wiphy *wiphy,
|
|
struct ieee80211_channel *chan,
|
|
const struct ieee80211_regdomain *regd,
|
|
u32 min_bw)
|
|
{
|
|
u32 bw_flags = 0;
|
|
const struct ieee80211_reg_rule *reg_rule = NULL;
|
|
const struct ieee80211_power_rule *power_rule = NULL;
|
|
u32 bw, center_freq_khz;
|
|
|
|
center_freq_khz = ieee80211_channel_to_khz(chan);
|
|
for (bw = MHZ_TO_KHZ(20); bw >= min_bw; bw = bw / 2) {
|
|
reg_rule = freq_reg_info_regd(center_freq_khz, regd, bw);
|
|
if (!IS_ERR(reg_rule))
|
|
break;
|
|
}
|
|
|
|
if (IS_ERR_OR_NULL(reg_rule)) {
|
|
pr_debug("Disabling freq %d.%03d MHz as custom regd has no rule that fits it\n",
|
|
chan->center_freq, chan->freq_offset);
|
|
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {
|
|
chan->flags |= IEEE80211_CHAN_DISABLED;
|
|
} else {
|
|
chan->orig_flags |= IEEE80211_CHAN_DISABLED;
|
|
chan->flags = chan->orig_flags;
|
|
}
|
|
return;
|
|
}
|
|
|
|
power_rule = ®_rule->power_rule;
|
|
bw_flags = reg_rule_to_chan_bw_flags(regd, reg_rule, chan);
|
|
|
|
chan->dfs_state_entered = jiffies;
|
|
chan->dfs_state = NL80211_DFS_USABLE;
|
|
|
|
chan->beacon_found = false;
|
|
|
|
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED)
|
|
chan->flags = chan->orig_flags | bw_flags |
|
|
map_regdom_flags(reg_rule->flags);
|
|
else
|
|
chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags;
|
|
|
|
chan->max_antenna_gain = (int) MBI_TO_DBI(power_rule->max_antenna_gain);
|
|
chan->max_reg_power = chan->max_power =
|
|
(int) MBM_TO_DBM(power_rule->max_eirp);
|
|
|
|
if (chan->flags & IEEE80211_CHAN_RADAR) {
|
|
if (reg_rule->dfs_cac_ms)
|
|
chan->dfs_cac_ms = reg_rule->dfs_cac_ms;
|
|
else
|
|
chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
|
|
}
|
|
|
|
chan->max_power = chan->max_reg_power;
|
|
}
|
|
|
|
static void handle_band_custom(struct wiphy *wiphy,
|
|
struct ieee80211_supported_band *sband,
|
|
const struct ieee80211_regdomain *regd)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (!sband)
|
|
return;
|
|
|
|
/*
|
|
* We currently assume that you always want at least 20 MHz,
|
|
* otherwise channel 12 might get enabled if this rule is
|
|
* compatible to US, which permits 2402 - 2472 MHz.
|
|
*/
|
|
for (i = 0; i < sband->n_channels; i++)
|
|
handle_channel_custom(wiphy, &sband->channels[i], regd,
|
|
MHZ_TO_KHZ(20));
|
|
}
|
|
|
|
/* Used by drivers prior to wiphy registration */
|
|
void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
|
|
const struct ieee80211_regdomain *regd)
|
|
{
|
|
enum nl80211_band band;
|
|
unsigned int bands_set = 0;
|
|
|
|
WARN(!(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG),
|
|
"wiphy should have REGULATORY_CUSTOM_REG\n");
|
|
wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
|
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) {
|
|
if (!wiphy->bands[band])
|
|
continue;
|
|
handle_band_custom(wiphy, wiphy->bands[band], regd);
|
|
bands_set++;
|
|
}
|
|
|
|
/*
|
|
* no point in calling this if it won't have any effect
|
|
* on your device's supported bands.
|
|
*/
|
|
WARN_ON(!bands_set);
|
|
}
|
|
EXPORT_SYMBOL(wiphy_apply_custom_regulatory);
|
|
|
|
static void reg_set_request_processed(void)
|
|
{
|
|
bool need_more_processing = false;
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
lr->processed = true;
|
|
|
|
spin_lock(®_requests_lock);
|
|
if (!list_empty(®_requests_list))
|
|
need_more_processing = true;
|
|
spin_unlock(®_requests_lock);
|
|
|
|
cancel_crda_timeout();
|
|
|
|
if (need_more_processing)
|
|
schedule_work(®_work);
|
|
}
|
|
|
|
/**
|
|
* reg_process_hint_core - process core regulatory requests
|
|
* @pending_request: a pending core regulatory request
|
|
*
|
|
* The wireless subsystem can use this function to process
|
|
* a regulatory request issued by the regulatory core.
|
|
*/
|
|
static enum reg_request_treatment
|
|
reg_process_hint_core(struct regulatory_request *core_request)
|
|
{
|
|
if (reg_query_database(core_request)) {
|
|
core_request->intersect = false;
|
|
core_request->processed = false;
|
|
reg_update_last_request(core_request);
|
|
return REG_REQ_OK;
|
|
}
|
|
|
|
return REG_REQ_IGNORE;
|
|
}
|
|
|
|
static enum reg_request_treatment
|
|
__reg_process_hint_user(struct regulatory_request *user_request)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (reg_request_cell_base(user_request))
|
|
return reg_ignore_cell_hint(user_request);
|
|
|
|
if (reg_request_cell_base(lr))
|
|
return REG_REQ_IGNORE;
|
|
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE)
|
|
return REG_REQ_INTERSECT;
|
|
/*
|
|
* If the user knows better the user should set the regdom
|
|
* to their country before the IE is picked up
|
|
*/
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_USER &&
|
|
lr->intersect)
|
|
return REG_REQ_IGNORE;
|
|
/*
|
|
* Process user requests only after previous user/driver/core
|
|
* requests have been processed
|
|
*/
|
|
if ((lr->initiator == NL80211_REGDOM_SET_BY_CORE ||
|
|
lr->initiator == NL80211_REGDOM_SET_BY_DRIVER ||
|
|
lr->initiator == NL80211_REGDOM_SET_BY_USER)) {
|
|
if (lr->intersect) {
|
|
if (!is_cfg80211_regdom_intersected())
|
|
return REG_REQ_IGNORE;
|
|
} else if (regdom_changes(lr->alpha2)) {
|
|
return REG_REQ_IGNORE;
|
|
}
|
|
}
|
|
|
|
if (!regdom_changes(user_request->alpha2))
|
|
return REG_REQ_ALREADY_SET;
|
|
|
|
return REG_REQ_OK;
|
|
}
|
|
|
|
/**
|
|
* reg_process_hint_user - process user regulatory requests
|
|
* @user_request: a pending user regulatory request
|
|
*
|
|
* The wireless subsystem can use this function to process
|
|
* a regulatory request initiated by userspace.
|
|
*/
|
|
static enum reg_request_treatment
|
|
reg_process_hint_user(struct regulatory_request *user_request)
|
|
{
|
|
enum reg_request_treatment treatment;
|
|
|
|
treatment = __reg_process_hint_user(user_request);
|
|
if (treatment == REG_REQ_IGNORE ||
|
|
treatment == REG_REQ_ALREADY_SET)
|
|
return REG_REQ_IGNORE;
|
|
|
|
user_request->intersect = treatment == REG_REQ_INTERSECT;
|
|
user_request->processed = false;
|
|
|
|
if (reg_query_database(user_request)) {
|
|
reg_update_last_request(user_request);
|
|
user_alpha2[0] = user_request->alpha2[0];
|
|
user_alpha2[1] = user_request->alpha2[1];
|
|
return REG_REQ_OK;
|
|
}
|
|
|
|
return REG_REQ_IGNORE;
|
|
}
|
|
|
|
static enum reg_request_treatment
|
|
__reg_process_hint_driver(struct regulatory_request *driver_request)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) {
|
|
if (regdom_changes(driver_request->alpha2))
|
|
return REG_REQ_OK;
|
|
return REG_REQ_ALREADY_SET;
|
|
}
|
|
|
|
/*
|
|
* This would happen if you unplug and plug your card
|
|
* back in or if you add a new device for which the previously
|
|
* loaded card also agrees on the regulatory domain.
|
|
*/
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
|
|
!regdom_changes(driver_request->alpha2))
|
|
return REG_REQ_ALREADY_SET;
|
|
|
|
return REG_REQ_INTERSECT;
|
|
}
|
|
|
|
/**
|
|
* reg_process_hint_driver - process driver regulatory requests
|
|
* @driver_request: a pending driver regulatory request
|
|
*
|
|
* The wireless subsystem can use this function to process
|
|
* a regulatory request issued by an 802.11 driver.
|
|
*
|
|
* Returns one of the different reg request treatment values.
|
|
*/
|
|
static enum reg_request_treatment
|
|
reg_process_hint_driver(struct wiphy *wiphy,
|
|
struct regulatory_request *driver_request)
|
|
{
|
|
const struct ieee80211_regdomain *regd, *tmp;
|
|
enum reg_request_treatment treatment;
|
|
|
|
treatment = __reg_process_hint_driver(driver_request);
|
|
|
|
switch (treatment) {
|
|
case REG_REQ_OK:
|
|
break;
|
|
case REG_REQ_IGNORE:
|
|
return REG_REQ_IGNORE;
|
|
case REG_REQ_INTERSECT:
|
|
case REG_REQ_ALREADY_SET:
|
|
regd = reg_copy_regd(get_cfg80211_regdom());
|
|
if (IS_ERR(regd))
|
|
return REG_REQ_IGNORE;
|
|
|
|
tmp = get_wiphy_regdom(wiphy);
|
|
rcu_assign_pointer(wiphy->regd, regd);
|
|
rcu_free_regdom(tmp);
|
|
}
|
|
|
|
|
|
driver_request->intersect = treatment == REG_REQ_INTERSECT;
|
|
driver_request->processed = false;
|
|
|
|
/*
|
|
* Since CRDA will not be called in this case as we already
|
|
* have applied the requested regulatory domain before we just
|
|
* inform userspace we have processed the request
|
|
*/
|
|
if (treatment == REG_REQ_ALREADY_SET) {
|
|
nl80211_send_reg_change_event(driver_request);
|
|
reg_update_last_request(driver_request);
|
|
reg_set_request_processed();
|
|
return REG_REQ_ALREADY_SET;
|
|
}
|
|
|
|
if (reg_query_database(driver_request)) {
|
|
reg_update_last_request(driver_request);
|
|
return REG_REQ_OK;
|
|
}
|
|
|
|
return REG_REQ_IGNORE;
|
|
}
|
|
|
|
static enum reg_request_treatment
|
|
__reg_process_hint_country_ie(struct wiphy *wiphy,
|
|
struct regulatory_request *country_ie_request)
|
|
{
|
|
struct wiphy *last_wiphy = NULL;
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (reg_request_cell_base(lr)) {
|
|
/* Trust a Cell base station over the AP's country IE */
|
|
if (regdom_changes(country_ie_request->alpha2))
|
|
return REG_REQ_IGNORE;
|
|
return REG_REQ_ALREADY_SET;
|
|
} else {
|
|
if (wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_IGNORE)
|
|
return REG_REQ_IGNORE;
|
|
}
|
|
|
|
if (unlikely(!is_an_alpha2(country_ie_request->alpha2)))
|
|
return -EINVAL;
|
|
|
|
if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE)
|
|
return REG_REQ_OK;
|
|
|
|
last_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx);
|
|
|
|
if (last_wiphy != wiphy) {
|
|
/*
|
|
* Two cards with two APs claiming different
|
|
* Country IE alpha2s. We could
|
|
* intersect them, but that seems unlikely
|
|
* to be correct. Reject second one for now.
|
|
*/
|
|
if (regdom_changes(country_ie_request->alpha2))
|
|
return REG_REQ_IGNORE;
|
|
return REG_REQ_ALREADY_SET;
|
|
}
|
|
|
|
if (regdom_changes(country_ie_request->alpha2))
|
|
return REG_REQ_OK;
|
|
return REG_REQ_ALREADY_SET;
|
|
}
|
|
|
|
/**
|
|
* reg_process_hint_country_ie - process regulatory requests from country IEs
|
|
* @country_ie_request: a regulatory request from a country IE
|
|
*
|
|
* The wireless subsystem can use this function to process
|
|
* a regulatory request issued by a country Information Element.
|
|
*
|
|
* Returns one of the different reg request treatment values.
|
|
*/
|
|
static enum reg_request_treatment
|
|
reg_process_hint_country_ie(struct wiphy *wiphy,
|
|
struct regulatory_request *country_ie_request)
|
|
{
|
|
enum reg_request_treatment treatment;
|
|
|
|
treatment = __reg_process_hint_country_ie(wiphy, country_ie_request);
|
|
|
|
switch (treatment) {
|
|
case REG_REQ_OK:
|
|
break;
|
|
case REG_REQ_IGNORE:
|
|
return REG_REQ_IGNORE;
|
|
case REG_REQ_ALREADY_SET:
|
|
reg_free_request(country_ie_request);
|
|
return REG_REQ_ALREADY_SET;
|
|
case REG_REQ_INTERSECT:
|
|
/*
|
|
* This doesn't happen yet, not sure we
|
|
* ever want to support it for this case.
|
|
*/
|
|
WARN_ONCE(1, "Unexpected intersection for country elements");
|
|
return REG_REQ_IGNORE;
|
|
}
|
|
|
|
country_ie_request->intersect = false;
|
|
country_ie_request->processed = false;
|
|
|
|
if (reg_query_database(country_ie_request)) {
|
|
reg_update_last_request(country_ie_request);
|
|
return REG_REQ_OK;
|
|
}
|
|
|
|
return REG_REQ_IGNORE;
|
|
}
|
|
|
|
bool reg_dfs_domain_same(struct wiphy *wiphy1, struct wiphy *wiphy2)
|
|
{
|
|
const struct ieee80211_regdomain *wiphy1_regd = NULL;
|
|
const struct ieee80211_regdomain *wiphy2_regd = NULL;
|
|
const struct ieee80211_regdomain *cfg80211_regd = NULL;
|
|
bool dfs_domain_same;
|
|
|
|
rcu_read_lock();
|
|
|
|
cfg80211_regd = rcu_dereference(cfg80211_regdomain);
|
|
wiphy1_regd = rcu_dereference(wiphy1->regd);
|
|
if (!wiphy1_regd)
|
|
wiphy1_regd = cfg80211_regd;
|
|
|
|
wiphy2_regd = rcu_dereference(wiphy2->regd);
|
|
if (!wiphy2_regd)
|
|
wiphy2_regd = cfg80211_regd;
|
|
|
|
dfs_domain_same = wiphy1_regd->dfs_region == wiphy2_regd->dfs_region;
|
|
|
|
rcu_read_unlock();
|
|
|
|
return dfs_domain_same;
|
|
}
|
|
|
|
static void reg_copy_dfs_chan_state(struct ieee80211_channel *dst_chan,
|
|
struct ieee80211_channel *src_chan)
|
|
{
|
|
if (!(dst_chan->flags & IEEE80211_CHAN_RADAR) ||
|
|
!(src_chan->flags & IEEE80211_CHAN_RADAR))
|
|
return;
|
|
|
|
if (dst_chan->flags & IEEE80211_CHAN_DISABLED ||
|
|
src_chan->flags & IEEE80211_CHAN_DISABLED)
|
|
return;
|
|
|
|
if (src_chan->center_freq == dst_chan->center_freq &&
|
|
dst_chan->dfs_state == NL80211_DFS_USABLE) {
|
|
dst_chan->dfs_state = src_chan->dfs_state;
|
|
dst_chan->dfs_state_entered = src_chan->dfs_state_entered;
|
|
}
|
|
}
|
|
|
|
static void wiphy_share_dfs_chan_state(struct wiphy *dst_wiphy,
|
|
struct wiphy *src_wiphy)
|
|
{
|
|
struct ieee80211_supported_band *src_sband, *dst_sband;
|
|
struct ieee80211_channel *src_chan, *dst_chan;
|
|
int i, j, band;
|
|
|
|
if (!reg_dfs_domain_same(dst_wiphy, src_wiphy))
|
|
return;
|
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) {
|
|
dst_sband = dst_wiphy->bands[band];
|
|
src_sband = src_wiphy->bands[band];
|
|
if (!dst_sband || !src_sband)
|
|
continue;
|
|
|
|
for (i = 0; i < dst_sband->n_channels; i++) {
|
|
dst_chan = &dst_sband->channels[i];
|
|
for (j = 0; j < src_sband->n_channels; j++) {
|
|
src_chan = &src_sband->channels[j];
|
|
reg_copy_dfs_chan_state(dst_chan, src_chan);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void wiphy_all_share_dfs_chan_state(struct wiphy *wiphy)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
if (wiphy == &rdev->wiphy)
|
|
continue;
|
|
wiphy_share_dfs_chan_state(wiphy, &rdev->wiphy);
|
|
}
|
|
}
|
|
|
|
/* This processes *all* regulatory hints */
|
|
static void reg_process_hint(struct regulatory_request *reg_request)
|
|
{
|
|
struct wiphy *wiphy = NULL;
|
|
enum reg_request_treatment treatment;
|
|
enum nl80211_reg_initiator initiator = reg_request->initiator;
|
|
|
|
if (reg_request->wiphy_idx != WIPHY_IDX_INVALID)
|
|
wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx);
|
|
|
|
switch (initiator) {
|
|
case NL80211_REGDOM_SET_BY_CORE:
|
|
treatment = reg_process_hint_core(reg_request);
|
|
break;
|
|
case NL80211_REGDOM_SET_BY_USER:
|
|
treatment = reg_process_hint_user(reg_request);
|
|
break;
|
|
case NL80211_REGDOM_SET_BY_DRIVER:
|
|
if (!wiphy)
|
|
goto out_free;
|
|
treatment = reg_process_hint_driver(wiphy, reg_request);
|
|
break;
|
|
case NL80211_REGDOM_SET_BY_COUNTRY_IE:
|
|
if (!wiphy)
|
|
goto out_free;
|
|
treatment = reg_process_hint_country_ie(wiphy, reg_request);
|
|
break;
|
|
default:
|
|
WARN(1, "invalid initiator %d\n", initiator);
|
|
goto out_free;
|
|
}
|
|
|
|
if (treatment == REG_REQ_IGNORE)
|
|
goto out_free;
|
|
|
|
WARN(treatment != REG_REQ_OK && treatment != REG_REQ_ALREADY_SET,
|
|
"unexpected treatment value %d\n", treatment);
|
|
|
|
/* This is required so that the orig_* parameters are saved.
|
|
* NOTE: treatment must be set for any case that reaches here!
|
|
*/
|
|
if (treatment == REG_REQ_ALREADY_SET && wiphy &&
|
|
wiphy->regulatory_flags & REGULATORY_STRICT_REG) {
|
|
wiphy_update_regulatory(wiphy, initiator);
|
|
wiphy_all_share_dfs_chan_state(wiphy);
|
|
reg_check_channels();
|
|
}
|
|
|
|
return;
|
|
|
|
out_free:
|
|
reg_free_request(reg_request);
|
|
}
|
|
|
|
static void notify_self_managed_wiphys(struct regulatory_request *request)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
struct wiphy *wiphy;
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
wiphy = &rdev->wiphy;
|
|
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
|
|
request->initiator == NL80211_REGDOM_SET_BY_USER &&
|
|
request->user_reg_hint_type ==
|
|
NL80211_USER_REG_HINT_CELL_BASE)
|
|
reg_call_notifier(wiphy, request);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_*
|
|
* Regulatory hints come on a first come first serve basis and we
|
|
* must process each one atomically.
|
|
*/
|
|
static void reg_process_pending_hints(void)
|
|
{
|
|
struct regulatory_request *reg_request, *lr;
|
|
|
|
lr = get_last_request();
|
|
|
|
/* When last_request->processed becomes true this will be rescheduled */
|
|
if (lr && !lr->processed) {
|
|
pr_debug("Pending regulatory request, waiting for it to be processed...\n");
|
|
return;
|
|
}
|
|
|
|
spin_lock(®_requests_lock);
|
|
|
|
if (list_empty(®_requests_list)) {
|
|
spin_unlock(®_requests_lock);
|
|
return;
|
|
}
|
|
|
|
reg_request = list_first_entry(®_requests_list,
|
|
struct regulatory_request,
|
|
list);
|
|
list_del_init(®_request->list);
|
|
|
|
spin_unlock(®_requests_lock);
|
|
|
|
notify_self_managed_wiphys(reg_request);
|
|
|
|
reg_process_hint(reg_request);
|
|
|
|
lr = get_last_request();
|
|
|
|
spin_lock(®_requests_lock);
|
|
if (!list_empty(®_requests_list) && lr && lr->processed)
|
|
schedule_work(®_work);
|
|
spin_unlock(®_requests_lock);
|
|
}
|
|
|
|
/* Processes beacon hints -- this has nothing to do with country IEs */
|
|
static void reg_process_pending_beacon_hints(void)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
struct reg_beacon *pending_beacon, *tmp;
|
|
|
|
/* This goes through the _pending_ beacon list */
|
|
spin_lock_bh(®_pending_beacons_lock);
|
|
|
|
list_for_each_entry_safe(pending_beacon, tmp,
|
|
®_pending_beacons, list) {
|
|
list_del_init(&pending_beacon->list);
|
|
|
|
/* Applies the beacon hint to current wiphys */
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list)
|
|
wiphy_update_new_beacon(&rdev->wiphy, pending_beacon);
|
|
|
|
/* Remembers the beacon hint for new wiphys or reg changes */
|
|
list_add_tail(&pending_beacon->list, ®_beacon_list);
|
|
}
|
|
|
|
spin_unlock_bh(®_pending_beacons_lock);
|
|
}
|
|
|
|
static void reg_process_self_managed_hints(void)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
struct wiphy *wiphy;
|
|
const struct ieee80211_regdomain *tmp;
|
|
const struct ieee80211_regdomain *regd;
|
|
enum nl80211_band band;
|
|
struct regulatory_request request = {};
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
wiphy = &rdev->wiphy;
|
|
|
|
spin_lock(®_requests_lock);
|
|
regd = rdev->requested_regd;
|
|
rdev->requested_regd = NULL;
|
|
spin_unlock(®_requests_lock);
|
|
|
|
if (regd == NULL)
|
|
continue;
|
|
|
|
tmp = get_wiphy_regdom(wiphy);
|
|
rcu_assign_pointer(wiphy->regd, regd);
|
|
rcu_free_regdom(tmp);
|
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++)
|
|
handle_band_custom(wiphy, wiphy->bands[band], regd);
|
|
|
|
reg_process_ht_flags(wiphy);
|
|
|
|
request.wiphy_idx = get_wiphy_idx(wiphy);
|
|
request.alpha2[0] = regd->alpha2[0];
|
|
request.alpha2[1] = regd->alpha2[1];
|
|
request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
|
|
|
|
nl80211_send_wiphy_reg_change_event(&request);
|
|
}
|
|
|
|
reg_check_channels();
|
|
}
|
|
|
|
static void reg_todo(struct work_struct *work)
|
|
{
|
|
rtnl_lock();
|
|
reg_process_pending_hints();
|
|
reg_process_pending_beacon_hints();
|
|
reg_process_self_managed_hints();
|
|
rtnl_unlock();
|
|
}
|
|
|
|
static void queue_regulatory_request(struct regulatory_request *request)
|
|
{
|
|
request->alpha2[0] = toupper(request->alpha2[0]);
|
|
request->alpha2[1] = toupper(request->alpha2[1]);
|
|
|
|
spin_lock(®_requests_lock);
|
|
list_add_tail(&request->list, ®_requests_list);
|
|
spin_unlock(®_requests_lock);
|
|
|
|
schedule_work(®_work);
|
|
}
|
|
|
|
/*
|
|
* Core regulatory hint -- happens during cfg80211_init()
|
|
* and when we restore regulatory settings.
|
|
*/
|
|
static int regulatory_hint_core(const char *alpha2)
|
|
{
|
|
struct regulatory_request *request;
|
|
|
|
request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
|
|
if (!request)
|
|
return -ENOMEM;
|
|
|
|
request->alpha2[0] = alpha2[0];
|
|
request->alpha2[1] = alpha2[1];
|
|
request->initiator = NL80211_REGDOM_SET_BY_CORE;
|
|
request->wiphy_idx = WIPHY_IDX_INVALID;
|
|
|
|
queue_regulatory_request(request);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* User hints */
|
|
int regulatory_hint_user(const char *alpha2,
|
|
enum nl80211_user_reg_hint_type user_reg_hint_type)
|
|
{
|
|
struct regulatory_request *request;
|
|
|
|
if (WARN_ON(!alpha2))
|
|
return -EINVAL;
|
|
|
|
if (!is_world_regdom(alpha2) && !is_an_alpha2(alpha2))
|
|
return -EINVAL;
|
|
|
|
request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
|
|
if (!request)
|
|
return -ENOMEM;
|
|
|
|
request->wiphy_idx = WIPHY_IDX_INVALID;
|
|
request->alpha2[0] = alpha2[0];
|
|
request->alpha2[1] = alpha2[1];
|
|
request->initiator = NL80211_REGDOM_SET_BY_USER;
|
|
request->user_reg_hint_type = user_reg_hint_type;
|
|
|
|
/* Allow calling CRDA again */
|
|
reset_crda_timeouts();
|
|
|
|
queue_regulatory_request(request);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(regulatory_hint_user);
|
|
|
|
int regulatory_hint_indoor(bool is_indoor, u32 portid)
|
|
{
|
|
spin_lock(®_indoor_lock);
|
|
|
|
/* It is possible that more than one user space process is trying to
|
|
* configure the indoor setting. To handle such cases, clear the indoor
|
|
* setting in case that some process does not think that the device
|
|
* is operating in an indoor environment. In addition, if a user space
|
|
* process indicates that it is controlling the indoor setting, save its
|
|
* portid, i.e., make it the owner.
|
|
*/
|
|
reg_is_indoor = is_indoor;
|
|
if (reg_is_indoor) {
|
|
if (!reg_is_indoor_portid)
|
|
reg_is_indoor_portid = portid;
|
|
} else {
|
|
reg_is_indoor_portid = 0;
|
|
}
|
|
|
|
spin_unlock(®_indoor_lock);
|
|
|
|
if (!is_indoor)
|
|
reg_check_channels();
|
|
|
|
return 0;
|
|
}
|
|
|
|
void regulatory_netlink_notify(u32 portid)
|
|
{
|
|
spin_lock(®_indoor_lock);
|
|
|
|
if (reg_is_indoor_portid != portid) {
|
|
spin_unlock(®_indoor_lock);
|
|
return;
|
|
}
|
|
|
|
reg_is_indoor = false;
|
|
reg_is_indoor_portid = 0;
|
|
|
|
spin_unlock(®_indoor_lock);
|
|
|
|
reg_check_channels();
|
|
}
|
|
|
|
/* Driver hints */
|
|
int regulatory_hint(struct wiphy *wiphy, const char *alpha2)
|
|
{
|
|
struct regulatory_request *request;
|
|
|
|
if (WARN_ON(!alpha2 || !wiphy))
|
|
return -EINVAL;
|
|
|
|
wiphy->regulatory_flags &= ~REGULATORY_CUSTOM_REG;
|
|
|
|
request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
|
|
if (!request)
|
|
return -ENOMEM;
|
|
|
|
request->wiphy_idx = get_wiphy_idx(wiphy);
|
|
|
|
request->alpha2[0] = alpha2[0];
|
|
request->alpha2[1] = alpha2[1];
|
|
request->initiator = NL80211_REGDOM_SET_BY_DRIVER;
|
|
|
|
/* Allow calling CRDA again */
|
|
reset_crda_timeouts();
|
|
|
|
queue_regulatory_request(request);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(regulatory_hint);
|
|
|
|
void regulatory_hint_country_ie(struct wiphy *wiphy, enum nl80211_band band,
|
|
const u8 *country_ie, u8 country_ie_len)
|
|
{
|
|
char alpha2[2];
|
|
enum environment_cap env = ENVIRON_ANY;
|
|
struct regulatory_request *request = NULL, *lr;
|
|
|
|
/* IE len must be evenly divisible by 2 */
|
|
if (country_ie_len & 0x01)
|
|
return;
|
|
|
|
if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
|
|
return;
|
|
|
|
request = kzalloc(sizeof(*request), GFP_KERNEL);
|
|
if (!request)
|
|
return;
|
|
|
|
alpha2[0] = country_ie[0];
|
|
alpha2[1] = country_ie[1];
|
|
|
|
if (country_ie[2] == 'I')
|
|
env = ENVIRON_INDOOR;
|
|
else if (country_ie[2] == 'O')
|
|
env = ENVIRON_OUTDOOR;
|
|
|
|
rcu_read_lock();
|
|
lr = get_last_request();
|
|
|
|
if (unlikely(!lr))
|
|
goto out;
|
|
|
|
/*
|
|
* We will run this only upon a successful connection on cfg80211.
|
|
* We leave conflict resolution to the workqueue, where can hold
|
|
* the RTNL.
|
|
*/
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
|
|
lr->wiphy_idx != WIPHY_IDX_INVALID)
|
|
goto out;
|
|
|
|
request->wiphy_idx = get_wiphy_idx(wiphy);
|
|
request->alpha2[0] = alpha2[0];
|
|
request->alpha2[1] = alpha2[1];
|
|
request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE;
|
|
request->country_ie_env = env;
|
|
|
|
/* Allow calling CRDA again */
|
|
reset_crda_timeouts();
|
|
|
|
queue_regulatory_request(request);
|
|
request = NULL;
|
|
out:
|
|
kfree(request);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
static void restore_alpha2(char *alpha2, bool reset_user)
|
|
{
|
|
/* indicates there is no alpha2 to consider for restoration */
|
|
alpha2[0] = '9';
|
|
alpha2[1] = '7';
|
|
|
|
/* The user setting has precedence over the module parameter */
|
|
if (is_user_regdom_saved()) {
|
|
/* Unless we're asked to ignore it and reset it */
|
|
if (reset_user) {
|
|
pr_debug("Restoring regulatory settings including user preference\n");
|
|
user_alpha2[0] = '9';
|
|
user_alpha2[1] = '7';
|
|
|
|
/*
|
|
* If we're ignoring user settings, we still need to
|
|
* check the module parameter to ensure we put things
|
|
* back as they were for a full restore.
|
|
*/
|
|
if (!is_world_regdom(ieee80211_regdom)) {
|
|
pr_debug("Keeping preference on module parameter ieee80211_regdom: %c%c\n",
|
|
ieee80211_regdom[0], ieee80211_regdom[1]);
|
|
alpha2[0] = ieee80211_regdom[0];
|
|
alpha2[1] = ieee80211_regdom[1];
|
|
}
|
|
} else {
|
|
pr_debug("Restoring regulatory settings while preserving user preference for: %c%c\n",
|
|
user_alpha2[0], user_alpha2[1]);
|
|
alpha2[0] = user_alpha2[0];
|
|
alpha2[1] = user_alpha2[1];
|
|
}
|
|
} else if (!is_world_regdom(ieee80211_regdom)) {
|
|
pr_debug("Keeping preference on module parameter ieee80211_regdom: %c%c\n",
|
|
ieee80211_regdom[0], ieee80211_regdom[1]);
|
|
alpha2[0] = ieee80211_regdom[0];
|
|
alpha2[1] = ieee80211_regdom[1];
|
|
} else
|
|
pr_debug("Restoring regulatory settings\n");
|
|
}
|
|
|
|
static void restore_custom_reg_settings(struct wiphy *wiphy)
|
|
{
|
|
struct ieee80211_supported_band *sband;
|
|
enum nl80211_band band;
|
|
struct ieee80211_channel *chan;
|
|
int i;
|
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) {
|
|
sband = wiphy->bands[band];
|
|
if (!sband)
|
|
continue;
|
|
for (i = 0; i < sband->n_channels; i++) {
|
|
chan = &sband->channels[i];
|
|
chan->flags = chan->orig_flags;
|
|
chan->max_antenna_gain = chan->orig_mag;
|
|
chan->max_power = chan->orig_mpwr;
|
|
chan->beacon_found = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Restoring regulatory settings involves ingoring any
|
|
* possibly stale country IE information and user regulatory
|
|
* settings if so desired, this includes any beacon hints
|
|
* learned as we could have traveled outside to another country
|
|
* after disconnection. To restore regulatory settings we do
|
|
* exactly what we did at bootup:
|
|
*
|
|
* - send a core regulatory hint
|
|
* - send a user regulatory hint if applicable
|
|
*
|
|
* Device drivers that send a regulatory hint for a specific country
|
|
* keep their own regulatory domain on wiphy->regd so that does does
|
|
* not need to be remembered.
|
|
*/
|
|
static void restore_regulatory_settings(bool reset_user)
|
|
{
|
|
char alpha2[2];
|
|
char world_alpha2[2];
|
|
struct reg_beacon *reg_beacon, *btmp;
|
|
LIST_HEAD(tmp_reg_req_list);
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
/*
|
|
* Clear the indoor setting in case that it is not controlled by user
|
|
* space, as otherwise there is no guarantee that the device is still
|
|
* operating in an indoor environment.
|
|
*/
|
|
spin_lock(®_indoor_lock);
|
|
if (reg_is_indoor && !reg_is_indoor_portid) {
|
|
reg_is_indoor = false;
|
|
reg_check_channels();
|
|
}
|
|
spin_unlock(®_indoor_lock);
|
|
|
|
reset_regdomains(true, &world_regdom);
|
|
restore_alpha2(alpha2, reset_user);
|
|
|
|
/*
|
|
* If there's any pending requests we simply
|
|
* stash them to a temporary pending queue and
|
|
* add then after we've restored regulatory
|
|
* settings.
|
|
*/
|
|
spin_lock(®_requests_lock);
|
|
list_splice_tail_init(®_requests_list, &tmp_reg_req_list);
|
|
spin_unlock(®_requests_lock);
|
|
|
|
/* Clear beacon hints */
|
|
spin_lock_bh(®_pending_beacons_lock);
|
|
list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) {
|
|
list_del(®_beacon->list);
|
|
kfree(reg_beacon);
|
|
}
|
|
spin_unlock_bh(®_pending_beacons_lock);
|
|
|
|
list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) {
|
|
list_del(®_beacon->list);
|
|
kfree(reg_beacon);
|
|
}
|
|
|
|
/* First restore to the basic regulatory settings */
|
|
world_alpha2[0] = cfg80211_world_regdom->alpha2[0];
|
|
world_alpha2[1] = cfg80211_world_regdom->alpha2[1];
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED)
|
|
continue;
|
|
if (rdev->wiphy.regulatory_flags & REGULATORY_CUSTOM_REG)
|
|
restore_custom_reg_settings(&rdev->wiphy);
|
|
}
|
|
|
|
regulatory_hint_core(world_alpha2);
|
|
|
|
/*
|
|
* This restores the ieee80211_regdom module parameter
|
|
* preference or the last user requested regulatory
|
|
* settings, user regulatory settings takes precedence.
|
|
*/
|
|
if (is_an_alpha2(alpha2))
|
|
regulatory_hint_user(alpha2, NL80211_USER_REG_HINT_USER);
|
|
|
|
spin_lock(®_requests_lock);
|
|
list_splice_tail_init(&tmp_reg_req_list, ®_requests_list);
|
|
spin_unlock(®_requests_lock);
|
|
|
|
pr_debug("Kicking the queue\n");
|
|
|
|
schedule_work(®_work);
|
|
}
|
|
|
|
static bool is_wiphy_all_set_reg_flag(enum ieee80211_regulatory_flags flag)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
struct wireless_dev *wdev;
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
|
|
wdev_lock(wdev);
|
|
if (!(wdev->wiphy->regulatory_flags & flag)) {
|
|
wdev_unlock(wdev);
|
|
return false;
|
|
}
|
|
wdev_unlock(wdev);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void regulatory_hint_disconnect(void)
|
|
{
|
|
/* Restore of regulatory settings is not required when wiphy(s)
|
|
* ignore IE from connected access point but clearance of beacon hints
|
|
* is required when wiphy(s) supports beacon hints.
|
|
*/
|
|
if (is_wiphy_all_set_reg_flag(REGULATORY_COUNTRY_IE_IGNORE)) {
|
|
struct reg_beacon *reg_beacon, *btmp;
|
|
|
|
if (is_wiphy_all_set_reg_flag(REGULATORY_DISABLE_BEACON_HINTS))
|
|
return;
|
|
|
|
spin_lock_bh(®_pending_beacons_lock);
|
|
list_for_each_entry_safe(reg_beacon, btmp,
|
|
®_pending_beacons, list) {
|
|
list_del(®_beacon->list);
|
|
kfree(reg_beacon);
|
|
}
|
|
spin_unlock_bh(®_pending_beacons_lock);
|
|
|
|
list_for_each_entry_safe(reg_beacon, btmp,
|
|
®_beacon_list, list) {
|
|
list_del(®_beacon->list);
|
|
kfree(reg_beacon);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
pr_debug("All devices are disconnected, going to restore regulatory settings\n");
|
|
restore_regulatory_settings(false);
|
|
}
|
|
|
|
static bool freq_is_chan_12_13_14(u32 freq)
|
|
{
|
|
if (freq == ieee80211_channel_to_frequency(12, NL80211_BAND_2GHZ) ||
|
|
freq == ieee80211_channel_to_frequency(13, NL80211_BAND_2GHZ) ||
|
|
freq == ieee80211_channel_to_frequency(14, NL80211_BAND_2GHZ))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan)
|
|
{
|
|
struct reg_beacon *pending_beacon;
|
|
|
|
list_for_each_entry(pending_beacon, ®_pending_beacons, list)
|
|
if (ieee80211_channel_equal(beacon_chan,
|
|
&pending_beacon->chan))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
int regulatory_hint_found_beacon(struct wiphy *wiphy,
|
|
struct ieee80211_channel *beacon_chan,
|
|
gfp_t gfp)
|
|
{
|
|
struct reg_beacon *reg_beacon;
|
|
bool processing;
|
|
|
|
if (beacon_chan->beacon_found ||
|
|
beacon_chan->flags & IEEE80211_CHAN_RADAR ||
|
|
(beacon_chan->band == NL80211_BAND_2GHZ &&
|
|
!freq_is_chan_12_13_14(beacon_chan->center_freq)))
|
|
return 0;
|
|
|
|
spin_lock_bh(®_pending_beacons_lock);
|
|
processing = pending_reg_beacon(beacon_chan);
|
|
spin_unlock_bh(®_pending_beacons_lock);
|
|
|
|
if (processing)
|
|
return 0;
|
|
|
|
reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp);
|
|
if (!reg_beacon)
|
|
return -ENOMEM;
|
|
|
|
pr_debug("Found new beacon on frequency: %d.%03d MHz (Ch %d) on %s\n",
|
|
beacon_chan->center_freq, beacon_chan->freq_offset,
|
|
ieee80211_freq_khz_to_channel(
|
|
ieee80211_channel_to_khz(beacon_chan)),
|
|
wiphy_name(wiphy));
|
|
|
|
memcpy(®_beacon->chan, beacon_chan,
|
|
sizeof(struct ieee80211_channel));
|
|
|
|
/*
|
|
* Since we can be called from BH or and non-BH context
|
|
* we must use spin_lock_bh()
|
|
*/
|
|
spin_lock_bh(®_pending_beacons_lock);
|
|
list_add_tail(®_beacon->list, ®_pending_beacons);
|
|
spin_unlock_bh(®_pending_beacons_lock);
|
|
|
|
schedule_work(®_work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void print_rd_rules(const struct ieee80211_regdomain *rd)
|
|
{
|
|
unsigned int i;
|
|
const struct ieee80211_reg_rule *reg_rule = NULL;
|
|
const struct ieee80211_freq_range *freq_range = NULL;
|
|
const struct ieee80211_power_rule *power_rule = NULL;
|
|
char bw[32], cac_time[32];
|
|
|
|
pr_debug(" (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)\n");
|
|
|
|
for (i = 0; i < rd->n_reg_rules; i++) {
|
|
reg_rule = &rd->reg_rules[i];
|
|
freq_range = ®_rule->freq_range;
|
|
power_rule = ®_rule->power_rule;
|
|
|
|
if (reg_rule->flags & NL80211_RRF_AUTO_BW)
|
|
snprintf(bw, sizeof(bw), "%d KHz, %u KHz AUTO",
|
|
freq_range->max_bandwidth_khz,
|
|
reg_get_max_bandwidth(rd, reg_rule));
|
|
else
|
|
snprintf(bw, sizeof(bw), "%d KHz",
|
|
freq_range->max_bandwidth_khz);
|
|
|
|
if (reg_rule->flags & NL80211_RRF_DFS)
|
|
scnprintf(cac_time, sizeof(cac_time), "%u s",
|
|
reg_rule->dfs_cac_ms/1000);
|
|
else
|
|
scnprintf(cac_time, sizeof(cac_time), "N/A");
|
|
|
|
|
|
/*
|
|
* There may not be documentation for max antenna gain
|
|
* in certain regions
|
|
*/
|
|
if (power_rule->max_antenna_gain)
|
|
pr_debug(" (%d KHz - %d KHz @ %s), (%d mBi, %d mBm), (%s)\n",
|
|
freq_range->start_freq_khz,
|
|
freq_range->end_freq_khz,
|
|
bw,
|
|
power_rule->max_antenna_gain,
|
|
power_rule->max_eirp,
|
|
cac_time);
|
|
else
|
|
pr_debug(" (%d KHz - %d KHz @ %s), (N/A, %d mBm), (%s)\n",
|
|
freq_range->start_freq_khz,
|
|
freq_range->end_freq_khz,
|
|
bw,
|
|
power_rule->max_eirp,
|
|
cac_time);
|
|
}
|
|
}
|
|
|
|
bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region)
|
|
{
|
|
switch (dfs_region) {
|
|
case NL80211_DFS_UNSET:
|
|
case NL80211_DFS_FCC:
|
|
case NL80211_DFS_ETSI:
|
|
case NL80211_DFS_JP:
|
|
return true;
|
|
default:
|
|
pr_debug("Ignoring unknown DFS master region: %d\n", dfs_region);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static void print_regdomain(const struct ieee80211_regdomain *rd)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
if (is_intersected_alpha2(rd->alpha2)) {
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
|
|
struct cfg80211_registered_device *rdev;
|
|
rdev = cfg80211_rdev_by_wiphy_idx(lr->wiphy_idx);
|
|
if (rdev) {
|
|
pr_debug("Current regulatory domain updated by AP to: %c%c\n",
|
|
rdev->country_ie_alpha2[0],
|
|
rdev->country_ie_alpha2[1]);
|
|
} else
|
|
pr_debug("Current regulatory domain intersected:\n");
|
|
} else
|
|
pr_debug("Current regulatory domain intersected:\n");
|
|
} else if (is_world_regdom(rd->alpha2)) {
|
|
pr_debug("World regulatory domain updated:\n");
|
|
} else {
|
|
if (is_unknown_alpha2(rd->alpha2))
|
|
pr_debug("Regulatory domain changed to driver built-in settings (unknown country)\n");
|
|
else {
|
|
if (reg_request_cell_base(lr))
|
|
pr_debug("Regulatory domain changed to country: %c%c by Cell Station\n",
|
|
rd->alpha2[0], rd->alpha2[1]);
|
|
else
|
|
pr_debug("Regulatory domain changed to country: %c%c\n",
|
|
rd->alpha2[0], rd->alpha2[1]);
|
|
}
|
|
}
|
|
|
|
pr_debug(" DFS Master region: %s", reg_dfs_region_str(rd->dfs_region));
|
|
print_rd_rules(rd);
|
|
}
|
|
|
|
static void print_regdomain_info(const struct ieee80211_regdomain *rd)
|
|
{
|
|
pr_debug("Regulatory domain: %c%c\n", rd->alpha2[0], rd->alpha2[1]);
|
|
print_rd_rules(rd);
|
|
}
|
|
|
|
static int reg_set_rd_core(const struct ieee80211_regdomain *rd)
|
|
{
|
|
if (!is_world_regdom(rd->alpha2))
|
|
return -EINVAL;
|
|
update_world_regdomain(rd);
|
|
return 0;
|
|
}
|
|
|
|
static int reg_set_rd_user(const struct ieee80211_regdomain *rd,
|
|
struct regulatory_request *user_request)
|
|
{
|
|
const struct ieee80211_regdomain *intersected_rd = NULL;
|
|
|
|
if (!regdom_changes(rd->alpha2))
|
|
return -EALREADY;
|
|
|
|
if (!is_valid_rd(rd)) {
|
|
pr_err("Invalid regulatory domain detected: %c%c\n",
|
|
rd->alpha2[0], rd->alpha2[1]);
|
|
print_regdomain_info(rd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!user_request->intersect) {
|
|
reset_regdomains(false, rd);
|
|
return 0;
|
|
}
|
|
|
|
intersected_rd = regdom_intersect(rd, get_cfg80211_regdom());
|
|
if (!intersected_rd)
|
|
return -EINVAL;
|
|
|
|
kfree(rd);
|
|
rd = NULL;
|
|
reset_regdomains(false, intersected_rd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int reg_set_rd_driver(const struct ieee80211_regdomain *rd,
|
|
struct regulatory_request *driver_request)
|
|
{
|
|
const struct ieee80211_regdomain *regd;
|
|
const struct ieee80211_regdomain *intersected_rd = NULL;
|
|
const struct ieee80211_regdomain *tmp;
|
|
struct wiphy *request_wiphy;
|
|
|
|
if (is_world_regdom(rd->alpha2))
|
|
return -EINVAL;
|
|
|
|
if (!regdom_changes(rd->alpha2))
|
|
return -EALREADY;
|
|
|
|
if (!is_valid_rd(rd)) {
|
|
pr_err("Invalid regulatory domain detected: %c%c\n",
|
|
rd->alpha2[0], rd->alpha2[1]);
|
|
print_regdomain_info(rd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
request_wiphy = wiphy_idx_to_wiphy(driver_request->wiphy_idx);
|
|
if (!request_wiphy)
|
|
return -ENODEV;
|
|
|
|
if (!driver_request->intersect) {
|
|
if (request_wiphy->regd)
|
|
return -EALREADY;
|
|
|
|
regd = reg_copy_regd(rd);
|
|
if (IS_ERR(regd))
|
|
return PTR_ERR(regd);
|
|
|
|
rcu_assign_pointer(request_wiphy->regd, regd);
|
|
reset_regdomains(false, rd);
|
|
return 0;
|
|
}
|
|
|
|
intersected_rd = regdom_intersect(rd, get_cfg80211_regdom());
|
|
if (!intersected_rd)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* We can trash what CRDA provided now.
|
|
* However if a driver requested this specific regulatory
|
|
* domain we keep it for its private use
|
|
*/
|
|
tmp = get_wiphy_regdom(request_wiphy);
|
|
rcu_assign_pointer(request_wiphy->regd, rd);
|
|
rcu_free_regdom(tmp);
|
|
|
|
rd = NULL;
|
|
|
|
reset_regdomains(false, intersected_rd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int reg_set_rd_country_ie(const struct ieee80211_regdomain *rd,
|
|
struct regulatory_request *country_ie_request)
|
|
{
|
|
struct wiphy *request_wiphy;
|
|
|
|
if (!is_alpha2_set(rd->alpha2) && !is_an_alpha2(rd->alpha2) &&
|
|
!is_unknown_alpha2(rd->alpha2))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Lets only bother proceeding on the same alpha2 if the current
|
|
* rd is non static (it means CRDA was present and was used last)
|
|
* and the pending request came in from a country IE
|
|
*/
|
|
|
|
if (!is_valid_rd(rd)) {
|
|
pr_err("Invalid regulatory domain detected: %c%c\n",
|
|
rd->alpha2[0], rd->alpha2[1]);
|
|
print_regdomain_info(rd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
request_wiphy = wiphy_idx_to_wiphy(country_ie_request->wiphy_idx);
|
|
if (!request_wiphy)
|
|
return -ENODEV;
|
|
|
|
if (country_ie_request->intersect)
|
|
return -EINVAL;
|
|
|
|
reset_regdomains(false, rd);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Use this call to set the current regulatory domain. Conflicts with
|
|
* multiple drivers can be ironed out later. Caller must've already
|
|
* kmalloc'd the rd structure.
|
|
*/
|
|
int set_regdom(const struct ieee80211_regdomain *rd,
|
|
enum ieee80211_regd_source regd_src)
|
|
{
|
|
struct regulatory_request *lr;
|
|
bool user_reset = false;
|
|
int r;
|
|
|
|
if (!reg_is_valid_request(rd->alpha2)) {
|
|
kfree(rd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (regd_src == REGD_SOURCE_CRDA)
|
|
reset_crda_timeouts();
|
|
|
|
lr = get_last_request();
|
|
|
|
/* Note that this doesn't update the wiphys, this is done below */
|
|
switch (lr->initiator) {
|
|
case NL80211_REGDOM_SET_BY_CORE:
|
|
r = reg_set_rd_core(rd);
|
|
break;
|
|
case NL80211_REGDOM_SET_BY_USER:
|
|
r = reg_set_rd_user(rd, lr);
|
|
user_reset = true;
|
|
break;
|
|
case NL80211_REGDOM_SET_BY_DRIVER:
|
|
r = reg_set_rd_driver(rd, lr);
|
|
break;
|
|
case NL80211_REGDOM_SET_BY_COUNTRY_IE:
|
|
r = reg_set_rd_country_ie(rd, lr);
|
|
break;
|
|
default:
|
|
WARN(1, "invalid initiator %d\n", lr->initiator);
|
|
kfree(rd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (r) {
|
|
switch (r) {
|
|
case -EALREADY:
|
|
reg_set_request_processed();
|
|
break;
|
|
default:
|
|
/* Back to world regulatory in case of errors */
|
|
restore_regulatory_settings(user_reset);
|
|
}
|
|
|
|
kfree(rd);
|
|
return r;
|
|
}
|
|
|
|
/* This would make this whole thing pointless */
|
|
if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom()))
|
|
return -EINVAL;
|
|
|
|
/* update all wiphys now with the new established regulatory domain */
|
|
update_all_wiphy_regulatory(lr->initiator);
|
|
|
|
print_regdomain(get_cfg80211_regdom());
|
|
|
|
nl80211_send_reg_change_event(lr);
|
|
|
|
reg_set_request_processed();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __regulatory_set_wiphy_regd(struct wiphy *wiphy,
|
|
struct ieee80211_regdomain *rd)
|
|
{
|
|
const struct ieee80211_regdomain *regd;
|
|
const struct ieee80211_regdomain *prev_regd;
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
if (WARN_ON(!wiphy || !rd))
|
|
return -EINVAL;
|
|
|
|
if (WARN(!(wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED),
|
|
"wiphy should have REGULATORY_WIPHY_SELF_MANAGED\n"))
|
|
return -EPERM;
|
|
|
|
if (WARN(!is_valid_rd(rd), "Invalid regulatory domain detected\n")) {
|
|
print_regdomain_info(rd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
regd = reg_copy_regd(rd);
|
|
if (IS_ERR(regd))
|
|
return PTR_ERR(regd);
|
|
|
|
rdev = wiphy_to_rdev(wiphy);
|
|
|
|
spin_lock(®_requests_lock);
|
|
prev_regd = rdev->requested_regd;
|
|
rdev->requested_regd = regd;
|
|
spin_unlock(®_requests_lock);
|
|
|
|
kfree(prev_regd);
|
|
return 0;
|
|
}
|
|
|
|
int regulatory_set_wiphy_regd(struct wiphy *wiphy,
|
|
struct ieee80211_regdomain *rd)
|
|
{
|
|
int ret = __regulatory_set_wiphy_regd(wiphy, rd);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
schedule_work(®_work);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(regulatory_set_wiphy_regd);
|
|
|
|
int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
|
|
struct ieee80211_regdomain *rd)
|
|
{
|
|
int ret;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
ret = __regulatory_set_wiphy_regd(wiphy, rd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* process the request immediately */
|
|
reg_process_self_managed_hints();
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl);
|
|
|
|
void wiphy_regulatory_register(struct wiphy *wiphy)
|
|
{
|
|
struct regulatory_request *lr = get_last_request();
|
|
|
|
/* self-managed devices ignore beacon hints and country IE */
|
|
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {
|
|
wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS |
|
|
REGULATORY_COUNTRY_IE_IGNORE;
|
|
|
|
/*
|
|
* The last request may have been received before this
|
|
* registration call. Call the driver notifier if
|
|
* initiator is USER and user type is CELL_BASE.
|
|
*/
|
|
if (lr->initiator == NL80211_REGDOM_SET_BY_USER &&
|
|
lr->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE)
|
|
reg_call_notifier(wiphy, lr);
|
|
}
|
|
|
|
if (!reg_dev_ignore_cell_hint(wiphy))
|
|
reg_num_devs_support_basehint++;
|
|
|
|
wiphy_update_regulatory(wiphy, lr->initiator);
|
|
wiphy_all_share_dfs_chan_state(wiphy);
|
|
reg_process_self_managed_hints();
|
|
}
|
|
|
|
void wiphy_regulatory_deregister(struct wiphy *wiphy)
|
|
{
|
|
struct wiphy *request_wiphy = NULL;
|
|
struct regulatory_request *lr;
|
|
|
|
lr = get_last_request();
|
|
|
|
if (!reg_dev_ignore_cell_hint(wiphy))
|
|
reg_num_devs_support_basehint--;
|
|
|
|
rcu_free_regdom(get_wiphy_regdom(wiphy));
|
|
RCU_INIT_POINTER(wiphy->regd, NULL);
|
|
|
|
if (lr)
|
|
request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx);
|
|
|
|
if (!request_wiphy || request_wiphy != wiphy)
|
|
return;
|
|
|
|
lr->wiphy_idx = WIPHY_IDX_INVALID;
|
|
lr->country_ie_env = ENVIRON_ANY;
|
|
}
|
|
|
|
/*
|
|
* See FCC notices for UNII band definitions
|
|
* 5GHz: https://www.fcc.gov/document/5-ghz-unlicensed-spectrum-unii
|
|
* 6GHz: https://www.fcc.gov/document/fcc-proposes-more-spectrum-unlicensed-use-0
|
|
*/
|
|
int cfg80211_get_unii(int freq)
|
|
{
|
|
/* UNII-1 */
|
|
if (freq >= 5150 && freq <= 5250)
|
|
return 0;
|
|
|
|
/* UNII-2A */
|
|
if (freq > 5250 && freq <= 5350)
|
|
return 1;
|
|
|
|
/* UNII-2B */
|
|
if (freq > 5350 && freq <= 5470)
|
|
return 2;
|
|
|
|
/* UNII-2C */
|
|
if (freq > 5470 && freq <= 5725)
|
|
return 3;
|
|
|
|
/* UNII-3 */
|
|
if (freq > 5725 && freq <= 5825)
|
|
return 4;
|
|
|
|
/* UNII-5 */
|
|
if (freq > 5925 && freq <= 6425)
|
|
return 5;
|
|
|
|
/* UNII-6 */
|
|
if (freq > 6425 && freq <= 6525)
|
|
return 6;
|
|
|
|
/* UNII-7 */
|
|
if (freq > 6525 && freq <= 6875)
|
|
return 7;
|
|
|
|
/* UNII-8 */
|
|
if (freq > 6875 && freq <= 7125)
|
|
return 8;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
bool regulatory_indoor_allowed(void)
|
|
{
|
|
return reg_is_indoor;
|
|
}
|
|
|
|
bool regulatory_pre_cac_allowed(struct wiphy *wiphy)
|
|
{
|
|
const struct ieee80211_regdomain *regd = NULL;
|
|
const struct ieee80211_regdomain *wiphy_regd = NULL;
|
|
bool pre_cac_allowed = false;
|
|
|
|
rcu_read_lock();
|
|
|
|
regd = rcu_dereference(cfg80211_regdomain);
|
|
wiphy_regd = rcu_dereference(wiphy->regd);
|
|
if (!wiphy_regd) {
|
|
if (regd->dfs_region == NL80211_DFS_ETSI)
|
|
pre_cac_allowed = true;
|
|
|
|
rcu_read_unlock();
|
|
|
|
return pre_cac_allowed;
|
|
}
|
|
|
|
if (regd->dfs_region == wiphy_regd->dfs_region &&
|
|
wiphy_regd->dfs_region == NL80211_DFS_ETSI)
|
|
pre_cac_allowed = true;
|
|
|
|
rcu_read_unlock();
|
|
|
|
return pre_cac_allowed;
|
|
}
|
|
|
|
static void cfg80211_check_and_end_cac(struct cfg80211_registered_device *rdev)
|
|
{
|
|
struct wireless_dev *wdev;
|
|
/* If we finished CAC or received radar, we should end any
|
|
* CAC running on the same channels.
|
|
* the check !cfg80211_chandef_dfs_usable contain 2 options:
|
|
* either all channels are available - those the CAC_FINISHED
|
|
* event has effected another wdev state, or there is a channel
|
|
* in unavailable state in wdev chandef - those the RADAR_DETECTED
|
|
* event has effected another wdev state.
|
|
* In both cases we should end the CAC on the wdev.
|
|
*/
|
|
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
|
|
if (wdev->cac_started &&
|
|
!cfg80211_chandef_dfs_usable(&rdev->wiphy, &wdev->chandef))
|
|
rdev_end_cac(rdev, wdev->netdev);
|
|
}
|
|
}
|
|
|
|
void regulatory_propagate_dfs_state(struct wiphy *wiphy,
|
|
struct cfg80211_chan_def *chandef,
|
|
enum nl80211_dfs_state dfs_state,
|
|
enum nl80211_radar_event event)
|
|
{
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (WARN_ON(!cfg80211_chandef_valid(chandef)))
|
|
return;
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
if (wiphy == &rdev->wiphy)
|
|
continue;
|
|
|
|
if (!reg_dfs_domain_same(wiphy, &rdev->wiphy))
|
|
continue;
|
|
|
|
if (!ieee80211_get_channel(&rdev->wiphy,
|
|
chandef->chan->center_freq))
|
|
continue;
|
|
|
|
cfg80211_set_dfs_state(&rdev->wiphy, chandef, dfs_state);
|
|
|
|
if (event == NL80211_RADAR_DETECTED ||
|
|
event == NL80211_RADAR_CAC_FINISHED) {
|
|
cfg80211_sched_dfs_chan_update(rdev);
|
|
cfg80211_check_and_end_cac(rdev);
|
|
}
|
|
|
|
nl80211_radar_notify(rdev, chandef, event, NULL, GFP_KERNEL);
|
|
}
|
|
}
|
|
|
|
static int __init regulatory_init_db(void)
|
|
{
|
|
int err;
|
|
|
|
/*
|
|
* It's possible that - due to other bugs/issues - cfg80211
|
|
* never called regulatory_init() below, or that it failed;
|
|
* in that case, don't try to do any further work here as
|
|
* it's doomed to lead to crashes.
|
|
*/
|
|
if (IS_ERR_OR_NULL(reg_pdev))
|
|
return -EINVAL;
|
|
|
|
err = load_builtin_regdb_keys();
|
|
if (err) {
|
|
platform_device_unregister(reg_pdev);
|
|
return err;
|
|
}
|
|
|
|
/* We always try to get an update for the static regdomain */
|
|
err = regulatory_hint_core(cfg80211_world_regdom->alpha2);
|
|
if (err) {
|
|
if (err == -ENOMEM) {
|
|
platform_device_unregister(reg_pdev);
|
|
return err;
|
|
}
|
|
/*
|
|
* N.B. kobject_uevent_env() can fail mainly for when we're out
|
|
* memory which is handled and propagated appropriately above
|
|
* but it can also fail during a netlink_broadcast() or during
|
|
* early boot for call_usermodehelper(). For now treat these
|
|
* errors as non-fatal.
|
|
*/
|
|
pr_err("kobject_uevent_env() was unable to call CRDA during init\n");
|
|
}
|
|
|
|
/*
|
|
* Finally, if the user set the module parameter treat it
|
|
* as a user hint.
|
|
*/
|
|
if (!is_world_regdom(ieee80211_regdom))
|
|
regulatory_hint_user(ieee80211_regdom,
|
|
NL80211_USER_REG_HINT_USER);
|
|
|
|
return 0;
|
|
}
|
|
#ifndef MODULE
|
|
late_initcall(regulatory_init_db);
|
|
#endif
|
|
|
|
int __init regulatory_init(void)
|
|
{
|
|
reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0);
|
|
if (IS_ERR(reg_pdev))
|
|
return PTR_ERR(reg_pdev);
|
|
|
|
spin_lock_init(®_requests_lock);
|
|
spin_lock_init(®_pending_beacons_lock);
|
|
spin_lock_init(®_indoor_lock);
|
|
|
|
reg_regdb_size_check();
|
|
|
|
rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom);
|
|
|
|
user_alpha2[0] = '9';
|
|
user_alpha2[1] = '7';
|
|
|
|
#ifdef MODULE
|
|
return regulatory_init_db();
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
void regulatory_exit(void)
|
|
{
|
|
struct regulatory_request *reg_request, *tmp;
|
|
struct reg_beacon *reg_beacon, *btmp;
|
|
|
|
cancel_work_sync(®_work);
|
|
cancel_crda_timeout_sync();
|
|
cancel_delayed_work_sync(®_check_chans);
|
|
|
|
/* Lock to suppress warnings */
|
|
rtnl_lock();
|
|
reset_regdomains(true, NULL);
|
|
rtnl_unlock();
|
|
|
|
dev_set_uevent_suppress(®_pdev->dev, true);
|
|
|
|
platform_device_unregister(reg_pdev);
|
|
|
|
list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) {
|
|
list_del(®_beacon->list);
|
|
kfree(reg_beacon);
|
|
}
|
|
|
|
list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) {
|
|
list_del(®_beacon->list);
|
|
kfree(reg_beacon);
|
|
}
|
|
|
|
list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) {
|
|
list_del(®_request->list);
|
|
kfree(reg_request);
|
|
}
|
|
|
|
if (!IS_ERR_OR_NULL(regdb))
|
|
kfree(regdb);
|
|
|
|
free_regdb_keyring();
|
|
}
|