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, 437 insertions, 0 deletions

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/stf.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/stf.c
new file mode 100644
index 000000000..79d4a7a4d
--- /dev/null
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/stf.c
@@ -0,0 +1,437 @@
+/*
+ * 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 <net/mac80211.h>
+
+#include "types.h"
+#include "d11.h"
+#include "rate.h"
+#include "phy/phy_hal.h"
+#include "channel.h"
+#include "main.h"
+#include "stf.h"
+#include "debug.h"
+
+#define MIN_SPATIAL_EXPANSION	0
+#define MAX_SPATIAL_EXPANSION	1
+
+#define BRCMS_STF_SS_STBC_RX(wlc) (BRCMS_ISNPHY(wlc->band) && \
+	NREV_GT(wlc->band->phyrev, 3) && NREV_LE(wlc->band->phyrev, 6))
+
+#define NSTS_1	1
+#define NSTS_2	2
+#define NSTS_3	3
+#define NSTS_4	4
+
+static const u8 txcore_default[5] = {
+	(0),			/* bitmap of the core enabled */
+	(0x01),			/* For Nsts = 1, enable core 1 */
+	(0x03),			/* For Nsts = 2, enable core 1 & 2 */
+	(0x07),			/* For Nsts = 3, enable core 1, 2 & 3 */
+	(0x0f)			/* For Nsts = 4, enable all cores */
+};
+
+static void brcms_c_stf_stbc_rx_ht_update(struct brcms_c_info *wlc, int val)
+{
+	/* MIMOPHYs rev3-6 cannot receive STBC with only one rx core active */
+	if (BRCMS_STF_SS_STBC_RX(wlc)) {
+		if ((wlc->stf->rxstreams == 1) && (val != HT_CAP_RX_STBC_NO))
+			return;
+	}
+
+	if (wlc->pub->up) {
+		brcms_c_update_beacon(wlc);
+		brcms_c_update_probe_resp(wlc, true);
+	}
+}
+
+/*
+ * every WLC_TEMPSENSE_PERIOD seconds temperature check to decide whether to
+ * turn on/off txchain.
+ */
+void brcms_c_tempsense_upd(struct brcms_c_info *wlc)
+{
+	struct brcms_phy_pub *pi = wlc->band->pi;
+	uint active_chains, txchain;
+
+	/* Check if the chip is too hot. Disable one Tx chain, if it is */
+	/* high 4 bits are for Rx chain, low 4 bits are  for Tx chain */
+	active_chains = wlc_phy_stf_chain_active_get(pi);
+	txchain = active_chains & 0xf;
+
+	if (wlc->stf->txchain == wlc->stf->hw_txchain) {
+		if (txchain && (txchain < wlc->stf->hw_txchain))
+			/* turn off 1 tx chain */
+			brcms_c_stf_txchain_set(wlc, txchain, true);
+	} else if (wlc->stf->txchain < wlc->stf->hw_txchain) {
+		if (txchain == wlc->stf->hw_txchain)
+			/* turn back on txchain */
+			brcms_c_stf_txchain_set(wlc, txchain, true);
+	}
+}
+
+void
+brcms_c_stf_ss_algo_channel_get(struct brcms_c_info *wlc, u16 *ss_algo_channel,
+			    u16 chanspec)
+{
+	struct tx_power power = { };
+	u8 siso_mcs_id, cdd_mcs_id, stbc_mcs_id;
+
+	/* Clear previous settings */
+	*ss_algo_channel = 0;
+
+	if (!wlc->pub->up) {
+		*ss_algo_channel = (u16) -1;
+		return;
+	}
+
+	wlc_phy_txpower_get_current(wlc->band->pi, &power,
+				    CHSPEC_CHANNEL(chanspec));
+
+	siso_mcs_id = (CHSPEC_IS40(chanspec)) ?
+	    WL_TX_POWER_MCS40_SISO_FIRST : WL_TX_POWER_MCS20_SISO_FIRST;
+	cdd_mcs_id = (CHSPEC_IS40(chanspec)) ?
+	    WL_TX_POWER_MCS40_CDD_FIRST : WL_TX_POWER_MCS20_CDD_FIRST;
+	stbc_mcs_id = (CHSPEC_IS40(chanspec)) ?
+	    WL_TX_POWER_MCS40_STBC_FIRST : WL_TX_POWER_MCS20_STBC_FIRST;
+
+	/* criteria to choose stf mode */
+
+	/*
+	 * the "+3dbm (12 0.25db units)" is to account for the fact that with
+	 * CDD, tx occurs on both chains
+	 */
+	if (power.target[siso_mcs_id] > (power.target[cdd_mcs_id] + 12))
+		setbit(ss_algo_channel, PHY_TXC1_MODE_SISO);
+	else
+		setbit(ss_algo_channel, PHY_TXC1_MODE_CDD);
+
+	/*
+	 * STBC is ORed into to algo channel as STBC requires per-packet SCB
+	 * capability check so cannot be default mode of operation. One of
+	 * SISO, CDD have to be set
+	 */
+	if (power.target[siso_mcs_id] <= (power.target[stbc_mcs_id] + 12))
+		setbit(ss_algo_channel, PHY_TXC1_MODE_STBC);
+}
+
+static bool brcms_c_stf_stbc_tx_set(struct brcms_c_info *wlc, s32 int_val)
+{
+	if ((int_val != AUTO) && (int_val != OFF) && (int_val != ON))
+		return false;
+
+	if ((int_val == ON) && (wlc->stf->txstreams == 1))
+		return false;
+
+	wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = (s8) int_val;
+	wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = (s8) int_val;
+
+	return true;
+}
+
+bool brcms_c_stf_stbc_rx_set(struct brcms_c_info *wlc, s32 int_val)
+{
+	if ((int_val != HT_CAP_RX_STBC_NO)
+	    && (int_val != HT_CAP_RX_STBC_ONE_STREAM))
+		return false;
+
+	if (BRCMS_STF_SS_STBC_RX(wlc)) {
+		if ((int_val != HT_CAP_RX_STBC_NO)
+		    && (wlc->stf->rxstreams == 1))
+			return false;
+	}
+
+	brcms_c_stf_stbc_rx_ht_update(wlc, int_val);
+	return true;
+}
+
+static int brcms_c_stf_txcore_set(struct brcms_c_info *wlc, u8 Nsts,
+				  u8 core_mask)
+{
+	brcms_dbg_ht(wlc->hw->d11core, "wl%d: Nsts %d core_mask %x\n",
+		     wlc->pub->unit, Nsts, core_mask);
+
+	if (hweight8(core_mask) > wlc->stf->txstreams)
+		core_mask = 0;
+
+	if ((hweight8(core_mask) == wlc->stf->txstreams) &&
+	    ((core_mask & ~wlc->stf->txchain)
+	     || !(core_mask & wlc->stf->txchain)))
+		core_mask = wlc->stf->txchain;
+
+	wlc->stf->txcore[Nsts] = core_mask;
+	/* Nsts = 1..4, txcore index = 1..4 */
+	if (Nsts == 1) {
+		/* Needs to update beacon and ucode generated response
+		 * frames when 1 stream core map changed
+		 */
+		wlc->stf->phytxant = core_mask << PHY_TXC_ANT_SHIFT;
+		brcms_b_txant_set(wlc->hw, wlc->stf->phytxant);
+		if (wlc->clk) {
+			brcms_c_suspend_mac_and_wait(wlc);
+			brcms_c_beacon_phytxctl_txant_upd(wlc, wlc->bcn_rspec);
+			brcms_c_enable_mac(wlc);
+		}
+	}
+
+	return 0;
+}
+
+static int brcms_c_stf_spatial_policy_set(struct brcms_c_info *wlc, int val)
+{
+	int i;
+	u8 core_mask = 0;
+
+	brcms_dbg_ht(wlc->hw->d11core, "wl%d: val %x\n", wlc->pub->unit,
+		     val);
+
+	wlc->stf->spatial_policy = (s8) val;
+	for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++) {
+		core_mask = (val == MAX_SPATIAL_EXPANSION) ?
+		    wlc->stf->txchain : txcore_default[i];
+		brcms_c_stf_txcore_set(wlc, (u8) i, core_mask);
+	}
+	return 0;
+}
+
+/*
+ * Centralized txant update function. call it whenever wlc->stf->txant and/or
+ * wlc->stf->txchain change.
+ *
+ * Antennas are controlled by ucode indirectly, which drives PHY or GPIO to
+ * achieve various tx/rx antenna selection schemes
+ *
+ * legacy phy, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7
+ * means auto(last rx).
+ * for NREV<3, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7
+ * means last rx and do tx-antenna selection for SISO transmissions
+ * for NREV=3, bit 6 and bit _8_ means antenna 0 and 1 respectively, bit6+bit7
+ * means last rx and do tx-antenna selection for SISO transmissions
+ * for NREV>=7, bit 6 and bit 7 mean antenna 0 and 1 respectively, nit6+bit7
+ * means both cores active
+*/
+static void _brcms_c_stf_phy_txant_upd(struct brcms_c_info *wlc)
+{
+	s8 txant;
+
+	txant = (s8) wlc->stf->txant;
+	if (BRCMS_PHY_11N_CAP(wlc->band)) {
+		if (txant == ANT_TX_FORCE_0) {
+			wlc->stf->phytxant = PHY_TXC_ANT_0;
+		} else if (txant == ANT_TX_FORCE_1) {
+			wlc->stf->phytxant = PHY_TXC_ANT_1;
+
+			if (BRCMS_ISNPHY(wlc->band) &&
+			    NREV_GE(wlc->band->phyrev, 3)
+			    && NREV_LT(wlc->band->phyrev, 7))
+				wlc->stf->phytxant = PHY_TXC_ANT_2;
+		} else {
+			if (BRCMS_ISLCNPHY(wlc->band) ||
+			    BRCMS_ISSSLPNPHY(wlc->band))
+				wlc->stf->phytxant = PHY_TXC_LCNPHY_ANT_LAST;
+			else {
+				/* catch out of sync wlc->stf->txcore */
+				WARN_ON(wlc->stf->txchain <= 0);
+				wlc->stf->phytxant =
+				    wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
+			}
+		}
+	} else {
+		if (txant == ANT_TX_FORCE_0)
+			wlc->stf->phytxant = PHY_TXC_OLD_ANT_0;
+		else if (txant == ANT_TX_FORCE_1)
+			wlc->stf->phytxant = PHY_TXC_OLD_ANT_1;
+		else
+			wlc->stf->phytxant = PHY_TXC_OLD_ANT_LAST;
+	}
+
+	brcms_b_txant_set(wlc->hw, wlc->stf->phytxant);
+}
+
+int brcms_c_stf_txchain_set(struct brcms_c_info *wlc, s32 int_val, bool force)
+{
+	u8 txchain = (u8) int_val;
+	u8 txstreams;
+	uint i;
+
+	if (wlc->stf->txchain == txchain)
+		return 0;
+
+	if ((txchain & ~wlc->stf->hw_txchain)
+	    || !(txchain & wlc->stf->hw_txchain))
+		return -EINVAL;
+
+	/*
+	 * if nrate override is configured to be non-SISO STF mode, reject
+	 * reducing txchain to 1
+	 */
+	txstreams = (u8) hweight8(txchain);
+	if (txstreams > MAX_STREAMS_SUPPORTED)
+		return -EINVAL;
+
+	wlc->stf->txchain = txchain;
+	wlc->stf->txstreams = txstreams;
+	brcms_c_stf_stbc_tx_set(wlc, wlc->band->band_stf_stbc_tx);
+	brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
+	brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);
+	wlc->stf->txant =
+	    (wlc->stf->txstreams == 1) ? ANT_TX_FORCE_0 : ANT_TX_DEF;
+	_brcms_c_stf_phy_txant_upd(wlc);
+
+	wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
+			      wlc->stf->rxchain);
+
+	for (i = 1; i <= MAX_STREAMS_SUPPORTED; i++)
+		brcms_c_stf_txcore_set(wlc, (u8) i, txcore_default[i]);
+
+	return 0;
+}
+
+/*
+ * update wlc->stf->ss_opmode which represents the operational stf_ss mode
+ * we're using
+ */
+void brcms_c_stf_ss_update(struct brcms_c_info *wlc, struct brcms_band *band)
+{
+	u8 prev_stf_ss;
+	u8 upd_stf_ss;
+
+	prev_stf_ss = wlc->stf->ss_opmode;
+
+	/*
+	 * NOTE: opmode can only be SISO or CDD as STBC is decided on a
+	 * per-packet basis
+	 */
+	if (BRCMS_STBC_CAP_PHY(wlc) &&
+	    wlc->stf->ss_algosel_auto
+	    && (wlc->stf->ss_algo_channel != (u16) -1)) {
+		upd_stf_ss = (wlc->stf->txstreams == 1 ||
+			      isset(&wlc->stf->ss_algo_channel,
+				    PHY_TXC1_MODE_SISO)) ?
+				    PHY_TXC1_MODE_SISO : PHY_TXC1_MODE_CDD;
+	} else {
+		if (wlc->band != band)
+			return;
+		upd_stf_ss = (wlc->stf->txstreams == 1) ?
+				PHY_TXC1_MODE_SISO : band->band_stf_ss_mode;
+	}
+	if (prev_stf_ss != upd_stf_ss) {
+		wlc->stf->ss_opmode = upd_stf_ss;
+		brcms_b_band_stf_ss_set(wlc->hw, upd_stf_ss);
+	}
+}
+
+int brcms_c_stf_attach(struct brcms_c_info *wlc)
+{
+	wlc->bandstate[BAND_2G_INDEX]->band_stf_ss_mode = PHY_TXC1_MODE_SISO;
+	wlc->bandstate[BAND_5G_INDEX]->band_stf_ss_mode = PHY_TXC1_MODE_CDD;
+
+	if (BRCMS_ISNPHY(wlc->band) &&
+	    (wlc_phy_txpower_hw_ctrl_get(wlc->band->pi) != PHY_TPC_HW_ON))
+		wlc->bandstate[BAND_2G_INDEX]->band_stf_ss_mode =
+		    PHY_TXC1_MODE_CDD;
+	brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
+	brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);
+
+	brcms_c_stf_stbc_rx_ht_update(wlc, HT_CAP_RX_STBC_NO);
+	wlc->bandstate[BAND_2G_INDEX]->band_stf_stbc_tx = OFF;
+	wlc->bandstate[BAND_5G_INDEX]->band_stf_stbc_tx = OFF;
+
+	if (BRCMS_STBC_CAP_PHY(wlc)) {
+		wlc->stf->ss_algosel_auto = true;
+		/* Init the default value */
+		wlc->stf->ss_algo_channel = (u16) -1;
+	}
+	return 0;
+}
+
+void brcms_c_stf_detach(struct brcms_c_info *wlc)
+{
+}
+
+void brcms_c_stf_phy_txant_upd(struct brcms_c_info *wlc)
+{
+	_brcms_c_stf_phy_txant_upd(wlc);
+}
+
+void brcms_c_stf_phy_chain_calc(struct brcms_c_info *wlc)
+{
+	struct ssb_sprom *sprom = &wlc->hw->d11core->bus->sprom;
+
+	/* get available rx/tx chains */
+	wlc->stf->hw_txchain = sprom->txchain;
+	wlc->stf->hw_rxchain = sprom->rxchain;
+
+	/* these parameter are intended to be used for all PHY types */
+	if (wlc->stf->hw_txchain == 0 || wlc->stf->hw_txchain == 0xf) {
+		if (BRCMS_ISNPHY(wlc->band))
+			wlc->stf->hw_txchain = TXCHAIN_DEF_NPHY;
+		else
+			wlc->stf->hw_txchain = TXCHAIN_DEF;
+	}
+
+	wlc->stf->txchain = wlc->stf->hw_txchain;
+	wlc->stf->txstreams = (u8) hweight8(wlc->stf->hw_txchain);
+
+	if (wlc->stf->hw_rxchain == 0 || wlc->stf->hw_rxchain == 0xf) {
+		if (BRCMS_ISNPHY(wlc->band))
+			wlc->stf->hw_rxchain = RXCHAIN_DEF_NPHY;
+		else
+			wlc->stf->hw_rxchain = RXCHAIN_DEF;
+	}
+
+	wlc->stf->rxchain = wlc->stf->hw_rxchain;
+	wlc->stf->rxstreams = (u8) hweight8(wlc->stf->hw_rxchain);
+
+	/* initialize the txcore table */
+	memcpy(wlc->stf->txcore, txcore_default, sizeof(wlc->stf->txcore));
+
+	/* default spatial_policy */
+	wlc->stf->spatial_policy = MIN_SPATIAL_EXPANSION;
+	brcms_c_stf_spatial_policy_set(wlc, MIN_SPATIAL_EXPANSION);
+}
+
+static u16 _brcms_c_stf_phytxchain_sel(struct brcms_c_info *wlc,
+				       u32 rspec)
+{
+	u16 phytxant = wlc->stf->phytxant;
+
+	if (rspec_stf(rspec) != PHY_TXC1_MODE_SISO)
+		phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
+	else if (wlc->stf->txant == ANT_TX_DEF)
+		phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
+	phytxant &= PHY_TXC_ANT_MASK;
+	return phytxant;
+}
+
+u16 brcms_c_stf_phytxchain_sel(struct brcms_c_info *wlc, u32 rspec)
+{
+	return _brcms_c_stf_phytxchain_sel(wlc, rspec);
+}
+
+u16 brcms_c_stf_d11hdrs_phyctl_txant(struct brcms_c_info *wlc, u32 rspec)
+{
+	u16 phytxant = wlc->stf->phytxant;
+	u16 mask = PHY_TXC_ANT_MASK;
+
+	/* for non-siso rates or default setting, use the available chains */
+	if (BRCMS_ISNPHY(wlc->band)) {
+		phytxant = _brcms_c_stf_phytxchain_sel(wlc, rspec);
+		mask = PHY_TXC_HTANT_MASK;
+	}
+	phytxant |= phytxant & mask;
+	return phytxant;
+}