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

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 771 insertions, 0 deletions

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/channel.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/channel.c
new file mode 100644
index 000000000..5a6d9c865
--- /dev/null
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/channel.c
@@ -0,0 +1,771 @@
+/*
+ * Copyright (c) 2010 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/types.h>
+#include <net/cfg80211.h>
+#include <net/mac80211.h>
+#include <net/regulatory.h>
+
+#include <defs.h>
+#include "pub.h"
+#include "phy/phy_hal.h"
+#include "main.h"
+#include "stf.h"
+#include "channel.h"
+#include "mac80211_if.h"
+#include "debug.h"
+
+/* QDB() macro takes a dB value and converts to a quarter dB value */
+#define QDB(n) ((n) * BRCMS_TXPWR_DB_FACTOR)
+
+#define LOCALE_MIMO_IDX_bn		0
+#define LOCALE_MIMO_IDX_11n		0
+
+/* max of BAND_5G_PWR_LVLS and 14 for 2.4 GHz */
+#define BRCMS_MAXPWR_MIMO_TBL_SIZE	14
+
+/* maxpwr mapping to 5GHz band channels:
+ * maxpwr[0] - channels [34-48]
+ * maxpwr[1] - channels [52-60]
+ * maxpwr[2] - channels [62-64]
+ * maxpwr[3] - channels [100-140]
+ * maxpwr[4] - channels [149-165]
+ */
+#define BAND_5G_PWR_LVLS	5	/* 5 power levels for 5G */
+
+#define LC(id)	LOCALE_MIMO_IDX_ ## id
+
+#define LOCALES(mimo2, mimo5) \
+		{LC(mimo2), LC(mimo5)}
+
+/* macro to get 5 GHz channel group index for tx power */
+#define CHANNEL_POWER_IDX_5G(c) (((c) < 52) ? 0 : \
+				 (((c) < 62) ? 1 : \
+				 (((c) < 100) ? 2 : \
+				 (((c) < 149) ? 3 : 4))))
+
+#define BRCM_2GHZ_2412_2462	REG_RULE(2412-10, 2462+10, 40, 0, 19, 0)
+#define BRCM_2GHZ_2467_2472	REG_RULE(2467-10, 2472+10, 20, 0, 19, \
+					 NL80211_RRF_NO_IR)
+
+#define BRCM_5GHZ_5180_5240	REG_RULE(5180-10, 5240+10, 40, 0, 21, \
+					 NL80211_RRF_NO_IR)
+#define BRCM_5GHZ_5260_5320	REG_RULE(5260-10, 5320+10, 40, 0, 21, \
+					 NL80211_RRF_DFS | \
+					 NL80211_RRF_NO_IR)
+#define BRCM_5GHZ_5500_5700	REG_RULE(5500-10, 5700+10, 40, 0, 21, \
+					 NL80211_RRF_DFS | \
+					 NL80211_RRF_NO_IR)
+#define BRCM_5GHZ_5745_5825	REG_RULE(5745-10, 5825+10, 40, 0, 21, \
+					 NL80211_RRF_NO_IR)
+
+static const struct ieee80211_regdomain brcms_regdom_x2 = {
+	.n_reg_rules = 6,
+	.alpha2 = "X2",
+	.reg_rules = {
+		BRCM_2GHZ_2412_2462,
+		BRCM_2GHZ_2467_2472,
+		BRCM_5GHZ_5180_5240,
+		BRCM_5GHZ_5260_5320,
+		BRCM_5GHZ_5500_5700,
+		BRCM_5GHZ_5745_5825,
+	}
+};
+
+ /* locale per-channel tx power limits for MIMO frames
+  * maxpwr arrays are index by channel for 2.4 GHz limits, and
+  * by sub-band for 5 GHz limits using CHANNEL_POWER_IDX_5G(channel)
+  */
+struct locale_mimo_info {
+	/* tx 20 MHz power limits, qdBm units */
+	s8 maxpwr20[BRCMS_MAXPWR_MIMO_TBL_SIZE];
+	/* tx 40 MHz power limits, qdBm units */
+	s8 maxpwr40[BRCMS_MAXPWR_MIMO_TBL_SIZE];
+};
+
+/* Country names and abbreviations with locale defined from ISO 3166 */
+struct country_info {
+	const u8 locale_mimo_2G;	/* 2.4G mimo info */
+	const u8 locale_mimo_5G;	/* 5G mimo info */
+};
+
+struct brcms_regd {
+	struct country_info country;
+	const struct ieee80211_regdomain *regdomain;
+};
+
+struct brcms_cm_info {
+	struct brcms_pub *pub;
+	struct brcms_c_info *wlc;
+	const struct brcms_regd *world_regd;
+};
+
+/*
+ * MIMO Locale Definitions - 2.4 GHz
+ */
+static const struct locale_mimo_info locale_bn = {
+	{QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
+	 QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
+	 QDB(13), QDB(13), QDB(13)},
+	{0, 0, QDB(13), QDB(13), QDB(13),
+	 QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
+	 QDB(13), 0, 0},
+};
+
+static const struct locale_mimo_info *g_mimo_2g_table[] = {
+	&locale_bn
+};
+
+/*
+ * MIMO Locale Definitions - 5 GHz
+ */
+static const struct locale_mimo_info locale_11n = {
+	{ /* 12.5 dBm */ 50, 50, 50, QDB(15), QDB(15)},
+	{QDB(14), QDB(15), QDB(15), QDB(15), QDB(15)},
+};
+
+static const struct locale_mimo_info *g_mimo_5g_table[] = {
+	&locale_11n
+};
+
+static const struct brcms_regd cntry_locales[] = {
+	/* Worldwide RoW 2, must always be at index 0 */
+	{
+		.country = LOCALES(bn, 11n),
+		.regdomain = &brcms_regdom_x2,
+	},
+};
+
+static const struct locale_mimo_info *brcms_c_get_mimo_2g(u8 locale_idx)
+{
+	if (locale_idx >= ARRAY_SIZE(g_mimo_2g_table))
+		return NULL;
+
+	return g_mimo_2g_table[locale_idx];
+}
+
+static const struct locale_mimo_info *brcms_c_get_mimo_5g(u8 locale_idx)
+{
+	if (locale_idx >= ARRAY_SIZE(g_mimo_5g_table))
+		return NULL;
+
+	return g_mimo_5g_table[locale_idx];
+}
+
+/*
+ * Indicates whether the country provided is valid to pass
+ * to cfg80211 or not.
+ *
+ * returns true if valid; false if not.
+ */
+static bool brcms_c_country_valid(const char *ccode)
+{
+	/*
+	 * only allow ascii alpha uppercase for the first 2
+	 * chars.
+	 */
+	if (!((ccode[0] & 0x80) == 0 && ccode[0] >= 0x41 && ccode[0] <= 0x5A &&
+	      (ccode[1] & 0x80) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A))
+		return false;
+
+	/*
+	 * do not match ISO 3166-1 user assigned country codes
+	 * that may be in the driver table
+	 */
+	if (!strcmp("AA", ccode) ||        /* AA */
+	    !strcmp("ZZ", ccode) ||        /* ZZ */
+	    ccode[0] == 'X' ||             /* XA - XZ */
+	    (ccode[0] == 'Q' &&            /* QM - QZ */
+	     (ccode[1] >= 'M' && ccode[1] <= 'Z')))
+		return false;
+
+	if (!strcmp("NA", ccode))
+		return false;
+
+	return true;
+}
+
+static const struct brcms_regd *brcms_world_regd(const char *regdom, int len)
+{
+	const struct brcms_regd *regd = NULL;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(cntry_locales); i++) {
+		if (!strncmp(regdom, cntry_locales[i].regdomain->alpha2, len)) {
+			regd = &cntry_locales[i];
+			break;
+		}
+	}
+
+	return regd;
+}
+
+static const struct brcms_regd *brcms_default_world_regd(void)
+{
+	return &cntry_locales[0];
+}
+
+/* JP, J1 - J10 are Japan ccodes */
+static bool brcms_c_japan_ccode(const char *ccode)
+{
+	return (ccode[0] == 'J' &&
+		(ccode[1] == 'P' || (ccode[1] >= '1' && ccode[1] <= '9')));
+}
+
+static void
+brcms_c_channel_min_txpower_limits_with_local_constraint(
+		struct brcms_cm_info *wlc_cm, struct txpwr_limits *txpwr,
+		u8 local_constraint_qdbm)
+{
+	int j;
+
+	/* CCK Rates */
+	for (j = 0; j < WL_TX_POWER_CCK_NUM; j++)
+		txpwr->cck[j] = min(txpwr->cck[j], local_constraint_qdbm);
+
+	/* 20 MHz Legacy OFDM SISO */
+	for (j = 0; j < WL_TX_POWER_OFDM_NUM; j++)
+		txpwr->ofdm[j] = min(txpwr->ofdm[j], local_constraint_qdbm);
+
+	/* 20 MHz Legacy OFDM CDD */
+	for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
+		txpwr->ofdm_cdd[j] =
+		    min(txpwr->ofdm_cdd[j], local_constraint_qdbm);
+
+	/* 40 MHz Legacy OFDM SISO */
+	for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
+		txpwr->ofdm_40_siso[j] =
+		    min(txpwr->ofdm_40_siso[j], local_constraint_qdbm);
+
+	/* 40 MHz Legacy OFDM CDD */
+	for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
+		txpwr->ofdm_40_cdd[j] =
+		    min(txpwr->ofdm_40_cdd[j], local_constraint_qdbm);
+
+	/* 20MHz MCS 0-7 SISO */
+	for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
+		txpwr->mcs_20_siso[j] =
+		    min(txpwr->mcs_20_siso[j], local_constraint_qdbm);
+
+	/* 20MHz MCS 0-7 CDD */
+	for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
+		txpwr->mcs_20_cdd[j] =
+		    min(txpwr->mcs_20_cdd[j], local_constraint_qdbm);
+
+	/* 20MHz MCS 0-7 STBC */
+	for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
+		txpwr->mcs_20_stbc[j] =
+		    min(txpwr->mcs_20_stbc[j], local_constraint_qdbm);
+
+	/* 20MHz MCS 8-15 MIMO */
+	for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++)
+		txpwr->mcs_20_mimo[j] =
+		    min(txpwr->mcs_20_mimo[j], local_constraint_qdbm);
+
+	/* 40MHz MCS 0-7 SISO */
+	for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
+		txpwr->mcs_40_siso[j] =
+		    min(txpwr->mcs_40_siso[j], local_constraint_qdbm);
+
+	/* 40MHz MCS 0-7 CDD */
+	for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
+		txpwr->mcs_40_cdd[j] =
+		    min(txpwr->mcs_40_cdd[j], local_constraint_qdbm);
+
+	/* 40MHz MCS 0-7 STBC */
+	for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
+		txpwr->mcs_40_stbc[j] =
+		    min(txpwr->mcs_40_stbc[j], local_constraint_qdbm);
+
+	/* 40MHz MCS 8-15 MIMO */
+	for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++)
+		txpwr->mcs_40_mimo[j] =
+		    min(txpwr->mcs_40_mimo[j], local_constraint_qdbm);
+
+	/* 40MHz MCS 32 */
+	txpwr->mcs32 = min(txpwr->mcs32, local_constraint_qdbm);
+
+}
+
+/*
+ * set the driver's current country and regulatory information
+ * using a country code as the source. Look up built in country
+ * information found with the country code.
+ */
+static void
+brcms_c_set_country(struct brcms_cm_info *wlc_cm,
+		    const struct brcms_regd *regd)
+{
+	struct brcms_c_info *wlc = wlc_cm->wlc;
+
+	if ((wlc->pub->_n_enab & SUPPORT_11N) !=
+	    wlc->protection->nmode_user)
+		brcms_c_set_nmode(wlc);
+
+	brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
+	brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);
+
+	brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false);
+
+	return;
+}
+
+struct brcms_cm_info *brcms_c_channel_mgr_attach(struct brcms_c_info *wlc)
+{
+	struct brcms_cm_info *wlc_cm;
+	struct brcms_pub *pub = wlc->pub;
+	struct ssb_sprom *sprom = &wlc->hw->d11core->bus->sprom;
+	const char *ccode = sprom->alpha2;
+	int ccode_len = sizeof(sprom->alpha2);
+
+	wlc_cm = kzalloc(sizeof(struct brcms_cm_info), GFP_ATOMIC);
+	if (wlc_cm == NULL)
+		return NULL;
+	wlc_cm->pub = pub;
+	wlc_cm->wlc = wlc;
+	wlc->cmi = wlc_cm;
+
+	/* store the country code for passing up as a regulatory hint */
+	wlc_cm->world_regd = brcms_world_regd(ccode, ccode_len);
+	if (brcms_c_country_valid(ccode))
+		strncpy(wlc->pub->srom_ccode, ccode, ccode_len);
+
+	/*
+	 * If no custom world domain is found in the SROM, use the
+	 * default "X2" domain.
+	 */
+	if (!wlc_cm->world_regd) {
+		wlc_cm->world_regd = brcms_default_world_regd();
+		ccode = wlc_cm->world_regd->regdomain->alpha2;
+		ccode_len = BRCM_CNTRY_BUF_SZ - 1;
+	}
+
+	/* save default country for exiting 11d regulatory mode */
+	strncpy(wlc->country_default, ccode, ccode_len);
+
+	/* initialize autocountry_default to driver default */
+	strncpy(wlc->autocountry_default, ccode, ccode_len);
+
+	brcms_c_set_country(wlc_cm, wlc_cm->world_regd);
+
+	return wlc_cm;
+}
+
+void brcms_c_channel_mgr_detach(struct brcms_cm_info *wlc_cm)
+{
+	kfree(wlc_cm);
+}
+
+void
+brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec,
+			 u8 local_constraint_qdbm)
+{
+	struct brcms_c_info *wlc = wlc_cm->wlc;
+	struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
+	struct txpwr_limits txpwr;
+
+	brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr);
+
+	brcms_c_channel_min_txpower_limits_with_local_constraint(
+		wlc_cm, &txpwr, local_constraint_qdbm
+	);
+
+	/* set or restore gmode as required by regulatory */
+	if (ch->flags & IEEE80211_CHAN_NO_OFDM)
+		brcms_c_set_gmode(wlc, GMODE_LEGACY_B, false);
+	else
+		brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false);
+
+	brcms_b_set_chanspec(wlc->hw, chanspec,
+			      !!(ch->flags & IEEE80211_CHAN_NO_IR),
+			      &txpwr);
+}
+
+void
+brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec,
+		       struct txpwr_limits *txpwr)
+{
+	struct brcms_c_info *wlc = wlc_cm->wlc;
+	struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
+	uint i;
+	uint chan;
+	int maxpwr;
+	int delta;
+	const struct country_info *country;
+	struct brcms_band *band;
+	int conducted_max = BRCMS_TXPWR_MAX;
+	const struct locale_mimo_info *li_mimo;
+	int maxpwr20, maxpwr40;
+	int maxpwr_idx;
+	uint j;
+
+	memset(txpwr, 0, sizeof(struct txpwr_limits));
+
+	if (WARN_ON(!ch))
+		return;
+
+	country = &wlc_cm->world_regd->country;
+
+	chan = CHSPEC_CHANNEL(chanspec);
+	band = wlc->bandstate[chspec_bandunit(chanspec)];
+	li_mimo = (band->bandtype == BRCM_BAND_5G) ?
+	    brcms_c_get_mimo_5g(country->locale_mimo_5G) :
+	    brcms_c_get_mimo_2g(country->locale_mimo_2G);
+
+	delta = band->antgain;
+
+	if (band->bandtype == BRCM_BAND_2G)
+		conducted_max = QDB(22);
+
+	maxpwr = QDB(ch->max_power) - delta;
+	maxpwr = max(maxpwr, 0);
+	maxpwr = min(maxpwr, conducted_max);
+
+	/* CCK txpwr limits for 2.4G band */
+	if (band->bandtype == BRCM_BAND_2G) {
+		for (i = 0; i < BRCMS_NUM_RATES_CCK; i++)
+			txpwr->cck[i] = (u8) maxpwr;
+	}
+
+	for (i = 0; i < BRCMS_NUM_RATES_OFDM; i++) {
+		txpwr->ofdm[i] = (u8) maxpwr;
+
+		/*
+		 * OFDM 40 MHz SISO has the same power as the corresponding
+		 * MCS0-7 rate unless overriden by the locale specific code.
+		 * We set this value to 0 as a flag (presumably 0 dBm isn't
+		 * a possibility) and then copy the MCS0-7 value to the 40 MHz
+		 * value if it wasn't explicitly set.
+		 */
+		txpwr->ofdm_40_siso[i] = 0;
+
+		txpwr->ofdm_cdd[i] = (u8) maxpwr;
+
+		txpwr->ofdm_40_cdd[i] = 0;
+	}
+
+	delta = 0;
+	if (band->antgain > QDB(6))
+		delta = band->antgain - QDB(6);	/* Excess over 6 dB */
+
+	if (band->bandtype == BRCM_BAND_2G)
+		maxpwr_idx = (chan - 1);
+	else
+		maxpwr_idx = CHANNEL_POWER_IDX_5G(chan);
+
+	maxpwr20 = li_mimo->maxpwr20[maxpwr_idx];
+	maxpwr40 = li_mimo->maxpwr40[maxpwr_idx];
+
+	maxpwr20 = maxpwr20 - delta;
+	maxpwr20 = max(maxpwr20, 0);
+	maxpwr40 = maxpwr40 - delta;
+	maxpwr40 = max(maxpwr40, 0);
+
+	/* Fill in the MCS 0-7 (SISO) rates */
+	for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
+
+		/*
+		 * 20 MHz has the same power as the corresponding OFDM rate
+		 * unless overriden by the locale specific code.
+		 */
+		txpwr->mcs_20_siso[i] = txpwr->ofdm[i];
+		txpwr->mcs_40_siso[i] = 0;
+	}
+
+	/* Fill in the MCS 0-7 CDD rates */
+	for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
+		txpwr->mcs_20_cdd[i] = (u8) maxpwr20;
+		txpwr->mcs_40_cdd[i] = (u8) maxpwr40;
+	}
+
+	/*
+	 * These locales have SISO expressed in the
+	 * table and override CDD later
+	 */
+	if (li_mimo == &locale_bn) {
+		maxpwr20 = QDB(16);
+		maxpwr40 = 0;
+
+		if (chan >= 3 && chan <= 11)
+			maxpwr40 = QDB(16);
+
+		for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
+			txpwr->mcs_20_siso[i] = (u8) maxpwr20;
+			txpwr->mcs_40_siso[i] = (u8) maxpwr40;
+		}
+	}
+
+	/* Fill in the MCS 0-7 STBC rates */
+	for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
+		txpwr->mcs_20_stbc[i] = 0;
+		txpwr->mcs_40_stbc[i] = 0;
+	}
+
+	/* Fill in the MCS 8-15 SDM rates */
+	for (i = 0; i < BRCMS_NUM_RATES_MCS_2_STREAM; i++) {
+		txpwr->mcs_20_mimo[i] = (u8) maxpwr20;
+		txpwr->mcs_40_mimo[i] = (u8) maxpwr40;
+	}
+
+	/* Fill in MCS32 */
+	txpwr->mcs32 = (u8) maxpwr40;
+
+	for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) {
+		if (txpwr->ofdm_40_cdd[i] == 0)
+			txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j];
+		if (i == 0) {
+			i = i + 1;
+			if (txpwr->ofdm_40_cdd[i] == 0)
+				txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j];
+		}
+	}
+
+	/*
+	 * Copy the 40 MHZ MCS 0-7 CDD value to the 40 MHZ MCS 0-7 SISO
+	 * value if it wasn't provided explicitly.
+	 */
+	for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
+		if (txpwr->mcs_40_siso[i] == 0)
+			txpwr->mcs_40_siso[i] = txpwr->mcs_40_cdd[i];
+	}
+
+	for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) {
+		if (txpwr->ofdm_40_siso[i] == 0)
+			txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j];
+		if (i == 0) {
+			i = i + 1;
+			if (txpwr->ofdm_40_siso[i] == 0)
+				txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j];
+		}
+	}
+
+	/*
+	 * Copy the 20 and 40 MHz MCS0-7 CDD values to the corresponding
+	 * STBC values if they weren't provided explicitly.
+	 */
+	for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
+		if (txpwr->mcs_20_stbc[i] == 0)
+			txpwr->mcs_20_stbc[i] = txpwr->mcs_20_cdd[i];
+
+		if (txpwr->mcs_40_stbc[i] == 0)
+			txpwr->mcs_40_stbc[i] = txpwr->mcs_40_cdd[i];
+	}
+
+	return;
+}
+
+/*
+ * Verify the chanspec is using a legal set of parameters, i.e. that the
+ * chanspec specified a band, bw, ctl_sb and channel and that the
+ * combination could be legal given any set of circumstances.
+ * RETURNS: true is the chanspec is malformed, false if it looks good.
+ */
+static bool brcms_c_chspec_malformed(u16 chanspec)
+{
+	/* must be 2G or 5G band */
+	if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec))
+		return true;
+	/* must be 20 or 40 bandwidth */
+	if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec))
+		return true;
+
+	/* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */
+	if (CHSPEC_IS20(chanspec)) {
+		if (!CHSPEC_SB_NONE(chanspec))
+			return true;
+	} else if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec)) {
+		return true;
+	}
+
+	return false;
+}
+
+/*
+ * Validate the chanspec for this locale, for 40MHZ we need to also
+ * check that the sidebands are valid 20MZH channels in this locale
+ * and they are also a legal HT combination
+ */
+static bool
+brcms_c_valid_chanspec_ext(struct brcms_cm_info *wlc_cm, u16 chspec)
+{
+	struct brcms_c_info *wlc = wlc_cm->wlc;
+	u8 channel = CHSPEC_CHANNEL(chspec);
+
+	/* check the chanspec */
+	if (brcms_c_chspec_malformed(chspec)) {
+		brcms_err(wlc->hw->d11core, "wl%d: malformed chanspec 0x%x\n",
+			  wlc->pub->unit, chspec);
+		return false;
+	}
+
+	if (CHANNEL_BANDUNIT(wlc_cm->wlc, channel) !=
+	    chspec_bandunit(chspec))
+		return false;
+
+	return true;
+}
+
+bool brcms_c_valid_chanspec_db(struct brcms_cm_info *wlc_cm, u16 chspec)
+{
+	return brcms_c_valid_chanspec_ext(wlc_cm, chspec);
+}
+
+static bool brcms_is_radar_freq(u16 center_freq)
+{
+	return center_freq >= 5260 && center_freq <= 5700;
+}
+
+static void brcms_reg_apply_radar_flags(struct wiphy *wiphy)
+{
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *ch;
+	int i;
+
+	sband = wiphy->bands[NL80211_BAND_5GHZ];
+	if (!sband)
+		return;
+
+	for (i = 0; i < sband->n_channels; i++) {
+		ch = &sband->channels[i];
+
+		if (!brcms_is_radar_freq(ch->center_freq))
+			continue;
+
+		/*
+		 * All channels in this range should be passive and have
+		 * DFS enabled.
+		 */
+		if (!(ch->flags & IEEE80211_CHAN_DISABLED))
+			ch->flags |= IEEE80211_CHAN_RADAR |
+				     IEEE80211_CHAN_NO_IR;
+	}
+}
+
+static void
+brcms_reg_apply_beaconing_flags(struct wiphy *wiphy,
+				enum nl80211_reg_initiator initiator)
+{
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *ch;
+	const struct ieee80211_reg_rule *rule;
+	int band, i;
+
+	for (band = 0; band < NUM_NL80211_BANDS; band++) {
+		sband = wiphy->bands[band];
+		if (!sband)
+			continue;
+
+		for (i = 0; i < sband->n_channels; i++) {
+			ch = &sband->channels[i];
+
+			if (ch->flags &
+			    (IEEE80211_CHAN_DISABLED | IEEE80211_CHAN_RADAR))
+				continue;
+
+			if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
+				rule = freq_reg_info(wiphy,
+						     MHZ_TO_KHZ(ch->center_freq));
+				if (IS_ERR(rule))
+					continue;
+
+				if (!(rule->flags & NL80211_RRF_NO_IR))
+					ch->flags &= ~IEEE80211_CHAN_NO_IR;
+			} else if (ch->beacon_found) {
+				ch->flags &= ~IEEE80211_CHAN_NO_IR;
+			}
+		}
+	}
+}
+
+static void brcms_reg_notifier(struct wiphy *wiphy,
+			       struct regulatory_request *request)
+{
+	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
+	struct brcms_info *wl = hw->priv;
+	struct brcms_c_info *wlc = wl->wlc;
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *ch;
+	int band, i;
+	bool ch_found = false;
+
+	brcms_reg_apply_radar_flags(wiphy);
+
+	if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE)
+		brcms_reg_apply_beaconing_flags(wiphy, request->initiator);
+
+	/* Disable radio if all channels disallowed by regulatory */
+	for (band = 0; !ch_found && band < NUM_NL80211_BANDS; band++) {
+		sband = wiphy->bands[band];
+		if (!sband)
+			continue;
+
+		for (i = 0; !ch_found && i < sband->n_channels; i++) {
+			ch = &sband->channels[i];
+
+			if (!(ch->flags & IEEE80211_CHAN_DISABLED))
+				ch_found = true;
+		}
+	}
+
+	if (ch_found) {
+		mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE);
+	} else {
+		mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE);
+		brcms_err(wlc->hw->d11core,
+			  "wl%d: %s: no valid channel for \"%s\"\n",
+			  wlc->pub->unit, __func__, request->alpha2);
+	}
+
+	if (wlc->pub->_nbands > 1 || wlc->band->bandtype == BRCM_BAND_2G)
+		wlc_phy_chanspec_ch14_widefilter_set(wlc->band->pi,
+					brcms_c_japan_ccode(request->alpha2));
+}
+
+void brcms_c_regd_init(struct brcms_c_info *wlc)
+{
+	struct wiphy *wiphy = wlc->wiphy;
+	const struct brcms_regd *regd = wlc->cmi->world_regd;
+	struct ieee80211_supported_band *sband;
+	struct ieee80211_channel *ch;
+	struct brcms_chanvec sup_chan;
+	struct brcms_band *band;
+	int band_idx, i;
+
+	/* Disable any channels not supported by the phy */
+	for (band_idx = 0; band_idx < wlc->pub->_nbands; band_idx++) {
+		band = wlc->bandstate[band_idx];
+
+		wlc_phy_chanspec_band_validch(band->pi, band->bandtype,
+					      &sup_chan);
+
+		if (band_idx == BAND_2G_INDEX)
+			sband = wiphy->bands[NL80211_BAND_2GHZ];
+		else
+			sband = wiphy->bands[NL80211_BAND_5GHZ];
+
+		for (i = 0; i < sband->n_channels; i++) {
+			ch = &sband->channels[i];
+			if (!isset(sup_chan.vec, ch->hw_value))
+				ch->flags |= IEEE80211_CHAN_DISABLED;
+		}
+	}
+
+	wlc->wiphy->reg_notifier = brcms_reg_notifier;
+	wlc->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
+					REGULATORY_STRICT_REG;
+	wiphy_apply_custom_regulatory(wlc->wiphy, regd->regdomain);
+	brcms_reg_apply_beaconing_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER);
+}