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, 400 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/dynack.c b/drivers/net/wireless/ath/ath9k/dynack.c
new file mode 100644
index 000000000..321ff54fd
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/dynack.c
@@ -0,0 +1,400 @@
+/*
+ * Copyright (c) 2014, Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
+ *
+ * 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 "ath9k.h"
+#include "hw.h"
+#include "dynack.h"
+
+#define COMPUTE_TO		(5 * HZ)
+#define LATEACK_DELAY		(10 * HZ)
+#define EWMA_LEVEL		96
+#define EWMA_DIV		128
+
+/**
+ * ath_dynack_get_max_to - set max timeout according to channel width
+ * @ah: ath hw
+ *
+ */
+static u32 ath_dynack_get_max_to(struct ath_hw *ah)
+{
+	const struct ath9k_channel *chan = ah->curchan;
+
+	if (!chan)
+		return 300;
+
+	if (IS_CHAN_HT40(chan))
+		return 300;
+	if (IS_CHAN_HALF_RATE(chan))
+		return 750;
+	if (IS_CHAN_QUARTER_RATE(chan))
+		return 1500;
+	return 600;
+}
+
+/*
+ * ath_dynack_ewma - EWMA (Exponentially Weighted Moving Average) calculation
+ */
+static inline int ath_dynack_ewma(int old, int new)
+{
+	if (old > 0)
+		return (new * (EWMA_DIV - EWMA_LEVEL) +
+			old * EWMA_LEVEL) / EWMA_DIV;
+	else
+		return new;
+}
+
+/**
+ * ath_dynack_get_sifs - get sifs time based on phy used
+ * @ah: ath hw
+ * @phy: phy used
+ *
+ */
+static inline u32 ath_dynack_get_sifs(struct ath_hw *ah, int phy)
+{
+	u32 sifs = CCK_SIFS_TIME;
+
+	if (phy == WLAN_RC_PHY_OFDM) {
+		if (IS_CHAN_QUARTER_RATE(ah->curchan))
+			sifs = OFDM_SIFS_TIME_QUARTER;
+		else if (IS_CHAN_HALF_RATE(ah->curchan))
+			sifs = OFDM_SIFS_TIME_HALF;
+		else
+			sifs = OFDM_SIFS_TIME;
+	}
+	return sifs;
+}
+
+/**
+ * ath_dynack_bssidmask - filter out ACK frames based on BSSID mask
+ * @ah: ath hw
+ * @mac: receiver address
+ */
+static inline bool ath_dynack_bssidmask(struct ath_hw *ah, const u8 *mac)
+{
+	int i;
+	struct ath_common *common = ath9k_hw_common(ah);
+
+	for (i = 0; i < ETH_ALEN; i++) {
+		if ((common->macaddr[i] & common->bssidmask[i]) !=
+		    (mac[i] & common->bssidmask[i]))
+			return false;
+	}
+
+	return true;
+}
+
+/**
+ * ath_dynack_set_timeout - configure timeouts/slottime registers
+ * @ah: ath hw
+ * @to: timeout value
+ *
+ */
+static void ath_dynack_set_timeout(struct ath_hw *ah, int to)
+{
+	struct ath_common *common = ath9k_hw_common(ah);
+	int slottime = (to - 3) / 2;
+
+	ath_dbg(common, DYNACK, "ACK timeout %u slottime %u\n",
+		to, slottime);
+	ath9k_hw_setslottime(ah, slottime);
+	ath9k_hw_set_ack_timeout(ah, to);
+	ath9k_hw_set_cts_timeout(ah, to);
+}
+
+/**
+ * ath_dynack_compute_ackto - compute ACK timeout as the maximum STA timeout
+ * @ah: ath hw
+ *
+ * should be called while holding qlock
+ */
+static void ath_dynack_compute_ackto(struct ath_hw *ah)
+{
+	struct ath_dynack *da = &ah->dynack;
+	struct ath_node *an;
+	int to = 0;
+
+	list_for_each_entry(an, &da->nodes, list)
+		if (an->ackto > to)
+			to = an->ackto;
+
+	if (to && da->ackto != to) {
+		ath_dynack_set_timeout(ah, to);
+		da->ackto = to;
+	}
+}
+
+/**
+ * ath_dynack_compute_to - compute STA ACK timeout
+ * @ah: ath hw
+ *
+ * should be called while holding qlock
+ */
+static void ath_dynack_compute_to(struct ath_hw *ah)
+{
+	struct ath_dynack *da = &ah->dynack;
+	u32 ackto, ack_ts, max_to;
+	struct ieee80211_sta *sta;
+	struct ts_info *st_ts;
+	struct ath_node *an;
+	u8 *dst, *src;
+
+	rcu_read_lock();
+
+	max_to = ath_dynack_get_max_to(ah);
+	while (da->st_rbf.h_rb != da->st_rbf.t_rb &&
+	       da->ack_rbf.h_rb != da->ack_rbf.t_rb) {
+		ack_ts = da->ack_rbf.tstamp[da->ack_rbf.h_rb];
+		st_ts = &da->st_rbf.ts[da->st_rbf.h_rb];
+		dst = da->st_rbf.addr[da->st_rbf.h_rb].h_dest;
+		src = da->st_rbf.addr[da->st_rbf.h_rb].h_src;
+
+		ath_dbg(ath9k_hw_common(ah), DYNACK,
+			"ack_ts %u st_ts %u st_dur %u [%u-%u]\n",
+			ack_ts, st_ts->tstamp, st_ts->dur,
+			da->ack_rbf.h_rb, da->st_rbf.h_rb);
+
+		if (ack_ts > st_ts->tstamp + st_ts->dur) {
+			ackto = ack_ts - st_ts->tstamp - st_ts->dur;
+
+			if (ackto < max_to) {
+				sta = ieee80211_find_sta_by_ifaddr(ah->hw, dst,
+								   src);
+				if (sta) {
+					an = (struct ath_node *)sta->drv_priv;
+					an->ackto = ath_dynack_ewma(an->ackto,
+								    ackto);
+					ath_dbg(ath9k_hw_common(ah), DYNACK,
+						"%pM to %d [%u]\n", dst,
+						an->ackto, ackto);
+					if (time_is_before_jiffies(da->lto)) {
+						ath_dynack_compute_ackto(ah);
+						da->lto = jiffies + COMPUTE_TO;
+					}
+				}
+				INCR(da->ack_rbf.h_rb, ATH_DYN_BUF);
+			}
+			INCR(da->st_rbf.h_rb, ATH_DYN_BUF);
+		} else {
+			INCR(da->ack_rbf.h_rb, ATH_DYN_BUF);
+		}
+	}
+
+	rcu_read_unlock();
+}
+
+/**
+ * ath_dynack_sample_tx_ts - status timestamp sampling method
+ * @ah: ath hw
+ * @skb: socket buffer
+ * @ts: tx status info
+ * @sta: station pointer
+ *
+ */
+void ath_dynack_sample_tx_ts(struct ath_hw *ah, struct sk_buff *skb,
+			     struct ath_tx_status *ts,
+			     struct ieee80211_sta *sta)
+{
+	struct ieee80211_hdr *hdr;
+	struct ath_dynack *da = &ah->dynack;
+	struct ath_common *common = ath9k_hw_common(ah);
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	u32 dur = ts->duration;
+	u8 ridx;
+
+	if (!da->enabled || (info->flags & IEEE80211_TX_CTL_NO_ACK))
+		return;
+
+	spin_lock_bh(&da->qlock);
+
+	hdr = (struct ieee80211_hdr *)skb->data;
+
+	/* late ACK */
+	if (ts->ts_status & ATH9K_TXERR_XRETRY) {
+		if (ieee80211_is_assoc_req(hdr->frame_control) ||
+		    ieee80211_is_assoc_resp(hdr->frame_control) ||
+		    ieee80211_is_auth(hdr->frame_control)) {
+			u32 max_to = ath_dynack_get_max_to(ah);
+
+			ath_dbg(common, DYNACK, "late ack\n");
+			ath_dynack_set_timeout(ah, max_to);
+			if (sta) {
+				struct ath_node *an;
+
+				an = (struct ath_node *)sta->drv_priv;
+				an->ackto = -1;
+			}
+			da->lto = jiffies + LATEACK_DELAY;
+		}
+
+		spin_unlock_bh(&da->qlock);
+		return;
+	}
+
+	ridx = ts->ts_rateindex;
+
+	da->st_rbf.ts[da->st_rbf.t_rb].tstamp = ts->ts_tstamp;
+
+	/* ether_addr_copy() gives a false warning on gcc-10 so use memcpy()
+	 * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97490
+	 */
+	memcpy(da->st_rbf.addr[da->st_rbf.t_rb].h_dest, hdr->addr1, ETH_ALEN);
+	memcpy(da->st_rbf.addr[da->st_rbf.t_rb].h_src, hdr->addr2, ETH_ALEN);
+
+	if (!(info->status.rates[ridx].flags & IEEE80211_TX_RC_MCS)) {
+		const struct ieee80211_rate *rate;
+		struct ieee80211_tx_rate *rates = info->status.rates;
+		u32 phy;
+
+		rate = &common->sbands[info->band].bitrates[rates[ridx].idx];
+		if (info->band == NL80211_BAND_2GHZ &&
+		    !(rate->flags & IEEE80211_RATE_ERP_G))
+			phy = WLAN_RC_PHY_CCK;
+		else
+			phy = WLAN_RC_PHY_OFDM;
+
+		dur -= ath_dynack_get_sifs(ah, phy);
+	}
+	da->st_rbf.ts[da->st_rbf.t_rb].dur = dur;
+
+	INCR(da->st_rbf.t_rb, ATH_DYN_BUF);
+	if (da->st_rbf.t_rb == da->st_rbf.h_rb)
+		INCR(da->st_rbf.h_rb, ATH_DYN_BUF);
+
+	ath_dbg(common, DYNACK, "{%pM} tx sample %u [dur %u][h %u-t %u]\n",
+		hdr->addr1, ts->ts_tstamp, dur, da->st_rbf.h_rb,
+		da->st_rbf.t_rb);
+
+	ath_dynack_compute_to(ah);
+
+	spin_unlock_bh(&da->qlock);
+}
+EXPORT_SYMBOL(ath_dynack_sample_tx_ts);
+
+/**
+ * ath_dynack_sample_ack_ts - ACK timestamp sampling method
+ * @ah: ath hw
+ * @skb: socket buffer
+ * @ts: rx timestamp
+ *
+ */
+void ath_dynack_sample_ack_ts(struct ath_hw *ah, struct sk_buff *skb,
+			      u32 ts)
+{
+	struct ath_dynack *da = &ah->dynack;
+	struct ath_common *common = ath9k_hw_common(ah);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+
+	if (!da->enabled || !ath_dynack_bssidmask(ah, hdr->addr1))
+		return;
+
+	spin_lock_bh(&da->qlock);
+	da->ack_rbf.tstamp[da->ack_rbf.t_rb] = ts;
+
+	INCR(da->ack_rbf.t_rb, ATH_DYN_BUF);
+	if (da->ack_rbf.t_rb == da->ack_rbf.h_rb)
+		INCR(da->ack_rbf.h_rb, ATH_DYN_BUF);
+
+	ath_dbg(common, DYNACK, "rx sample %u [h %u-t %u]\n",
+		ts, da->ack_rbf.h_rb, da->ack_rbf.t_rb);
+
+	ath_dynack_compute_to(ah);
+
+	spin_unlock_bh(&da->qlock);
+}
+EXPORT_SYMBOL(ath_dynack_sample_ack_ts);
+
+/**
+ * ath_dynack_node_init - init ath_node related info
+ * @ah: ath hw
+ * @an: ath node
+ *
+ */
+void ath_dynack_node_init(struct ath_hw *ah, struct ath_node *an)
+{
+	struct ath_dynack *da = &ah->dynack;
+
+	an->ackto = da->ackto;
+
+	spin_lock_bh(&da->qlock);
+	list_add_tail(&an->list, &da->nodes);
+	spin_unlock_bh(&da->qlock);
+}
+EXPORT_SYMBOL(ath_dynack_node_init);
+
+/**
+ * ath_dynack_node_deinit - deinit ath_node related info
+ * @ah: ath hw
+ * @an: ath node
+ *
+ */
+void ath_dynack_node_deinit(struct ath_hw *ah, struct ath_node *an)
+{
+	struct ath_dynack *da = &ah->dynack;
+
+	spin_lock_bh(&da->qlock);
+	list_del(&an->list);
+	spin_unlock_bh(&da->qlock);
+}
+EXPORT_SYMBOL(ath_dynack_node_deinit);
+
+/**
+ * ath_dynack_reset - reset dynack processing
+ * @ah: ath hw
+ *
+ */
+void ath_dynack_reset(struct ath_hw *ah)
+{
+	struct ath_dynack *da = &ah->dynack;
+	struct ath_node *an;
+
+	spin_lock_bh(&da->qlock);
+
+	da->lto = jiffies + COMPUTE_TO;
+
+	da->st_rbf.t_rb = 0;
+	da->st_rbf.h_rb = 0;
+	da->ack_rbf.t_rb = 0;
+	da->ack_rbf.h_rb = 0;
+
+	da->ackto = ath_dynack_get_max_to(ah);
+	list_for_each_entry(an, &da->nodes, list)
+		an->ackto = da->ackto;
+
+	/* init acktimeout */
+	ath_dynack_set_timeout(ah, da->ackto);
+
+	spin_unlock_bh(&da->qlock);
+}
+EXPORT_SYMBOL(ath_dynack_reset);
+
+/**
+ * ath_dynack_init - init dynack data structure
+ * @ah: ath hw
+ *
+ */
+void ath_dynack_init(struct ath_hw *ah)
+{
+	struct ath_dynack *da = &ah->dynack;
+
+	memset(da, 0, sizeof(struct ath_dynack));
+
+	spin_lock_init(&da->qlock);
+	INIT_LIST_HEAD(&da->nodes);
+	/* ackto = slottime + sifs + air delay */
+	da->ackto = 9 + 16 + 64;
+
+	ah->hw->wiphy->features |= NL80211_FEATURE_ACKTO_ESTIMATION;
+}