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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/net/wireless/ath/ath11k/peer.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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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(). ...
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/peer.c')
-rw-r--r--drivers/net/wireless/ath/ath11k/peer.c669
1 files changed, 669 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath11k/peer.c b/drivers/net/wireless/ath/ath11k/peer.c
new file mode 100644
index 000000000..1ae7af02c
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/peer.c
@@ -0,0 +1,669 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include "core.h"
+#include "peer.h"
+#include "debug.h"
+
+static struct ath11k_peer *ath11k_peer_find_list_by_id(struct ath11k_base *ab,
+ int peer_id)
+{
+ struct ath11k_peer *peer;
+
+ lockdep_assert_held(&ab->base_lock);
+
+ list_for_each_entry(peer, &ab->peers, list) {
+ if (peer->peer_id != peer_id)
+ continue;
+
+ return peer;
+ }
+
+ return NULL;
+}
+
+struct ath11k_peer *ath11k_peer_find(struct ath11k_base *ab, int vdev_id,
+ const u8 *addr)
+{
+ struct ath11k_peer *peer;
+
+ lockdep_assert_held(&ab->base_lock);
+
+ list_for_each_entry(peer, &ab->peers, list) {
+ if (peer->vdev_id != vdev_id)
+ continue;
+ if (!ether_addr_equal(peer->addr, addr))
+ continue;
+
+ return peer;
+ }
+
+ return NULL;
+}
+
+struct ath11k_peer *ath11k_peer_find_by_addr(struct ath11k_base *ab,
+ const u8 *addr)
+{
+ struct ath11k_peer *peer;
+
+ lockdep_assert_held(&ab->base_lock);
+
+ if (!ab->rhead_peer_addr)
+ return NULL;
+
+ peer = rhashtable_lookup_fast(ab->rhead_peer_addr, addr,
+ ab->rhash_peer_addr_param);
+
+ return peer;
+}
+
+struct ath11k_peer *ath11k_peer_find_by_id(struct ath11k_base *ab,
+ int peer_id)
+{
+ struct ath11k_peer *peer;
+
+ lockdep_assert_held(&ab->base_lock);
+
+ if (!ab->rhead_peer_id)
+ return NULL;
+
+ peer = rhashtable_lookup_fast(ab->rhead_peer_id, &peer_id,
+ ab->rhash_peer_id_param);
+
+ return peer;
+}
+
+struct ath11k_peer *ath11k_peer_find_by_vdev_id(struct ath11k_base *ab,
+ int vdev_id)
+{
+ struct ath11k_peer *peer;
+
+ spin_lock_bh(&ab->base_lock);
+
+ list_for_each_entry(peer, &ab->peers, list) {
+ if (vdev_id == peer->vdev_id) {
+ spin_unlock_bh(&ab->base_lock);
+ return peer;
+ }
+ }
+ spin_unlock_bh(&ab->base_lock);
+ return NULL;
+}
+
+void ath11k_peer_unmap_event(struct ath11k_base *ab, u16 peer_id)
+{
+ struct ath11k_peer *peer;
+
+ spin_lock_bh(&ab->base_lock);
+
+ peer = ath11k_peer_find_list_by_id(ab, peer_id);
+ if (!peer) {
+ ath11k_warn(ab, "peer-unmap-event: unknown peer id %d\n",
+ peer_id);
+ goto exit;
+ }
+
+ ath11k_dbg(ab, ATH11K_DBG_DP_HTT, "htt peer unmap vdev %d peer %pM id %d\n",
+ peer->vdev_id, peer->addr, peer_id);
+
+ list_del(&peer->list);
+ kfree(peer);
+ wake_up(&ab->peer_mapping_wq);
+
+exit:
+ spin_unlock_bh(&ab->base_lock);
+}
+
+void ath11k_peer_map_event(struct ath11k_base *ab, u8 vdev_id, u16 peer_id,
+ u8 *mac_addr, u16 ast_hash, u16 hw_peer_id)
+{
+ struct ath11k_peer *peer;
+
+ spin_lock_bh(&ab->base_lock);
+ peer = ath11k_peer_find(ab, vdev_id, mac_addr);
+ if (!peer) {
+ peer = kzalloc(sizeof(*peer), GFP_ATOMIC);
+ if (!peer)
+ goto exit;
+
+ peer->vdev_id = vdev_id;
+ peer->peer_id = peer_id;
+ peer->ast_hash = ast_hash;
+ peer->hw_peer_id = hw_peer_id;
+ ether_addr_copy(peer->addr, mac_addr);
+ list_add(&peer->list, &ab->peers);
+ wake_up(&ab->peer_mapping_wq);
+ }
+
+ ath11k_dbg(ab, ATH11K_DBG_DP_HTT, "htt peer map vdev %d peer %pM id %d\n",
+ vdev_id, mac_addr, peer_id);
+
+exit:
+ spin_unlock_bh(&ab->base_lock);
+}
+
+static int ath11k_wait_for_peer_common(struct ath11k_base *ab, int vdev_id,
+ const u8 *addr, bool expect_mapped)
+{
+ int ret;
+
+ ret = wait_event_timeout(ab->peer_mapping_wq, ({
+ bool mapped;
+
+ spin_lock_bh(&ab->base_lock);
+ mapped = !!ath11k_peer_find(ab, vdev_id, addr);
+ spin_unlock_bh(&ab->base_lock);
+
+ (mapped == expect_mapped ||
+ test_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags));
+ }), 3 * HZ);
+
+ if (ret <= 0)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static inline int ath11k_peer_rhash_insert(struct ath11k_base *ab,
+ struct rhashtable *rtbl,
+ struct rhash_head *rhead,
+ struct rhashtable_params *params,
+ void *key)
+{
+ struct ath11k_peer *tmp;
+
+ lockdep_assert_held(&ab->tbl_mtx_lock);
+
+ tmp = rhashtable_lookup_get_insert_fast(rtbl, rhead, *params);
+
+ if (!tmp)
+ return 0;
+ else if (IS_ERR(tmp))
+ return PTR_ERR(tmp);
+ else
+ return -EEXIST;
+}
+
+static inline int ath11k_peer_rhash_remove(struct ath11k_base *ab,
+ struct rhashtable *rtbl,
+ struct rhash_head *rhead,
+ struct rhashtable_params *params)
+{
+ int ret;
+
+ lockdep_assert_held(&ab->tbl_mtx_lock);
+
+ ret = rhashtable_remove_fast(rtbl, rhead, *params);
+ if (ret && ret != -ENOENT)
+ return ret;
+
+ return 0;
+}
+
+static int ath11k_peer_rhash_add(struct ath11k_base *ab, struct ath11k_peer *peer)
+{
+ int ret;
+
+ lockdep_assert_held(&ab->base_lock);
+ lockdep_assert_held(&ab->tbl_mtx_lock);
+
+ if (!ab->rhead_peer_id || !ab->rhead_peer_addr)
+ return -EPERM;
+
+ ret = ath11k_peer_rhash_insert(ab, ab->rhead_peer_id, &peer->rhash_id,
+ &ab->rhash_peer_id_param, &peer->peer_id);
+ if (ret) {
+ ath11k_warn(ab, "failed to add peer %pM with id %d in rhash_id ret %d\n",
+ peer->addr, peer->peer_id, ret);
+ return ret;
+ }
+
+ ret = ath11k_peer_rhash_insert(ab, ab->rhead_peer_addr, &peer->rhash_addr,
+ &ab->rhash_peer_addr_param, &peer->addr);
+ if (ret) {
+ ath11k_warn(ab, "failed to add peer %pM with id %d in rhash_addr ret %d\n",
+ peer->addr, peer->peer_id, ret);
+ goto err_clean;
+ }
+
+ return 0;
+
+err_clean:
+ ath11k_peer_rhash_remove(ab, ab->rhead_peer_id, &peer->rhash_id,
+ &ab->rhash_peer_id_param);
+ return ret;
+}
+
+void ath11k_peer_cleanup(struct ath11k *ar, u32 vdev_id)
+{
+ struct ath11k_peer *peer, *tmp;
+ struct ath11k_base *ab = ar->ab;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ mutex_lock(&ab->tbl_mtx_lock);
+ spin_lock_bh(&ab->base_lock);
+ list_for_each_entry_safe(peer, tmp, &ab->peers, list) {
+ if (peer->vdev_id != vdev_id)
+ continue;
+
+ ath11k_warn(ab, "removing stale peer %pM from vdev_id %d\n",
+ peer->addr, vdev_id);
+
+ ath11k_peer_rhash_delete(ab, peer);
+ list_del(&peer->list);
+ kfree(peer);
+ ar->num_peers--;
+ }
+
+ spin_unlock_bh(&ab->base_lock);
+ mutex_unlock(&ab->tbl_mtx_lock);
+}
+
+static int ath11k_wait_for_peer_deleted(struct ath11k *ar, int vdev_id, const u8 *addr)
+{
+ return ath11k_wait_for_peer_common(ar->ab, vdev_id, addr, false);
+}
+
+int ath11k_wait_for_peer_delete_done(struct ath11k *ar, u32 vdev_id,
+ const u8 *addr)
+{
+ int ret;
+ unsigned long time_left;
+
+ ret = ath11k_wait_for_peer_deleted(ar, vdev_id, addr);
+ if (ret) {
+ ath11k_warn(ar->ab, "failed wait for peer deleted");
+ return ret;
+ }
+
+ time_left = wait_for_completion_timeout(&ar->peer_delete_done,
+ 3 * HZ);
+ if (time_left == 0) {
+ ath11k_warn(ar->ab, "Timeout in receiving peer delete response\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static int __ath11k_peer_delete(struct ath11k *ar, u32 vdev_id, const u8 *addr)
+{
+ int ret;
+ struct ath11k_peer *peer;
+ struct ath11k_base *ab = ar->ab;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ mutex_lock(&ab->tbl_mtx_lock);
+ spin_lock_bh(&ab->base_lock);
+
+ peer = ath11k_peer_find_by_addr(ab, addr);
+ /* Check if the found peer is what we want to remove.
+ * While the sta is transitioning to another band we may
+ * have 2 peer with the same addr assigned to different
+ * vdev_id. Make sure we are deleting the correct peer.
+ */
+ if (peer && peer->vdev_id == vdev_id)
+ ath11k_peer_rhash_delete(ab, peer);
+
+ /* Fallback to peer list search if the correct peer can't be found.
+ * Skip the deletion of the peer from the rhash since it has already
+ * been deleted in peer add.
+ */
+ if (!peer)
+ peer = ath11k_peer_find(ab, vdev_id, addr);
+
+ if (!peer) {
+ spin_unlock_bh(&ab->base_lock);
+ mutex_unlock(&ab->tbl_mtx_lock);
+
+ ath11k_warn(ab,
+ "failed to find peer vdev_id %d addr %pM in delete\n",
+ vdev_id, addr);
+ return -EINVAL;
+ }
+
+ spin_unlock_bh(&ab->base_lock);
+ mutex_unlock(&ab->tbl_mtx_lock);
+
+ reinit_completion(&ar->peer_delete_done);
+
+ ret = ath11k_wmi_send_peer_delete_cmd(ar, addr, vdev_id);
+ if (ret) {
+ ath11k_warn(ab,
+ "failed to delete peer vdev_id %d addr %pM ret %d\n",
+ vdev_id, addr, ret);
+ return ret;
+ }
+
+ ret = ath11k_wait_for_peer_delete_done(ar, vdev_id, addr);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int ath11k_peer_delete(struct ath11k *ar, u32 vdev_id, u8 *addr)
+{
+ int ret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ ret = __ath11k_peer_delete(ar, vdev_id, addr);
+ if (ret)
+ return ret;
+
+ ar->num_peers--;
+
+ return 0;
+}
+
+static int ath11k_wait_for_peer_created(struct ath11k *ar, int vdev_id, const u8 *addr)
+{
+ return ath11k_wait_for_peer_common(ar->ab, vdev_id, addr, true);
+}
+
+int ath11k_peer_create(struct ath11k *ar, struct ath11k_vif *arvif,
+ struct ieee80211_sta *sta, struct peer_create_params *param)
+{
+ struct ath11k_peer *peer;
+ struct ath11k_sta *arsta;
+ int ret, fbret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ if (ar->num_peers > (ar->max_num_peers - 1)) {
+ ath11k_warn(ar->ab,
+ "failed to create peer due to insufficient peer entry resource in firmware\n");
+ return -ENOBUFS;
+ }
+
+ spin_lock_bh(&ar->ab->base_lock);
+ peer = ath11k_peer_find_by_addr(ar->ab, param->peer_addr);
+ if (peer) {
+ if (peer->vdev_id == param->vdev_id) {
+ spin_unlock_bh(&ar->ab->base_lock);
+ return -EINVAL;
+ }
+
+ /* Assume sta is transitioning to another band.
+ * Remove here the peer from rhash.
+ */
+ mutex_lock(&ar->ab->tbl_mtx_lock);
+ ath11k_peer_rhash_delete(ar->ab, peer);
+ mutex_unlock(&ar->ab->tbl_mtx_lock);
+ }
+ spin_unlock_bh(&ar->ab->base_lock);
+
+ ret = ath11k_wmi_send_peer_create_cmd(ar, param);
+ if (ret) {
+ ath11k_warn(ar->ab,
+ "failed to send peer create vdev_id %d ret %d\n",
+ param->vdev_id, ret);
+ return ret;
+ }
+
+ ret = ath11k_wait_for_peer_created(ar, param->vdev_id,
+ param->peer_addr);
+ if (ret)
+ return ret;
+
+ mutex_lock(&ar->ab->tbl_mtx_lock);
+ spin_lock_bh(&ar->ab->base_lock);
+
+ peer = ath11k_peer_find(ar->ab, param->vdev_id, param->peer_addr);
+ if (!peer) {
+ spin_unlock_bh(&ar->ab->base_lock);
+ mutex_unlock(&ar->ab->tbl_mtx_lock);
+ ath11k_warn(ar->ab, "failed to find peer %pM on vdev %i after creation\n",
+ param->peer_addr, param->vdev_id);
+
+ ret = -ENOENT;
+ goto cleanup;
+ }
+
+ ret = ath11k_peer_rhash_add(ar->ab, peer);
+ if (ret) {
+ spin_unlock_bh(&ar->ab->base_lock);
+ mutex_unlock(&ar->ab->tbl_mtx_lock);
+ goto cleanup;
+ }
+
+ peer->pdev_idx = ar->pdev_idx;
+ peer->sta = sta;
+
+ if (arvif->vif->type == NL80211_IFTYPE_STATION) {
+ arvif->ast_hash = peer->ast_hash;
+ arvif->ast_idx = peer->hw_peer_id;
+ }
+
+ peer->sec_type = HAL_ENCRYPT_TYPE_OPEN;
+ peer->sec_type_grp = HAL_ENCRYPT_TYPE_OPEN;
+
+ if (sta) {
+ arsta = (struct ath11k_sta *)sta->drv_priv;
+ arsta->tcl_metadata |= FIELD_PREP(HTT_TCL_META_DATA_TYPE, 0) |
+ FIELD_PREP(HTT_TCL_META_DATA_PEER_ID,
+ peer->peer_id);
+
+ /* set HTT extension valid bit to 0 by default */
+ arsta->tcl_metadata &= ~HTT_TCL_META_DATA_VALID_HTT;
+ }
+
+ ar->num_peers++;
+
+ spin_unlock_bh(&ar->ab->base_lock);
+ mutex_unlock(&ar->ab->tbl_mtx_lock);
+
+ return 0;
+
+cleanup:
+ fbret = __ath11k_peer_delete(ar, param->vdev_id, param->peer_addr);
+ if (fbret)
+ ath11k_warn(ar->ab, "failed peer %pM delete vdev_id %d fallback ret %d\n",
+ param->peer_addr, param->vdev_id, fbret);
+
+ return ret;
+}
+
+int ath11k_peer_rhash_delete(struct ath11k_base *ab, struct ath11k_peer *peer)
+{
+ int ret;
+
+ lockdep_assert_held(&ab->base_lock);
+ lockdep_assert_held(&ab->tbl_mtx_lock);
+
+ if (!ab->rhead_peer_id || !ab->rhead_peer_addr)
+ return -EPERM;
+
+ ret = ath11k_peer_rhash_remove(ab, ab->rhead_peer_addr, &peer->rhash_addr,
+ &ab->rhash_peer_addr_param);
+ if (ret) {
+ ath11k_warn(ab, "failed to remove peer %pM id %d in rhash_addr ret %d\n",
+ peer->addr, peer->peer_id, ret);
+ return ret;
+ }
+
+ ret = ath11k_peer_rhash_remove(ab, ab->rhead_peer_id, &peer->rhash_id,
+ &ab->rhash_peer_id_param);
+ if (ret) {
+ ath11k_warn(ab, "failed to remove peer %pM id %d in rhash_id ret %d\n",
+ peer->addr, peer->peer_id, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ath11k_peer_rhash_id_tbl_init(struct ath11k_base *ab)
+{
+ struct rhashtable_params *param;
+ struct rhashtable *rhash_id_tbl;
+ int ret;
+ size_t size;
+
+ lockdep_assert_held(&ab->tbl_mtx_lock);
+
+ if (ab->rhead_peer_id)
+ return 0;
+
+ size = sizeof(*ab->rhead_peer_id);
+ rhash_id_tbl = kzalloc(size, GFP_KERNEL);
+ if (!rhash_id_tbl) {
+ ath11k_warn(ab, "failed to init rhash id table due to no mem (size %zu)\n",
+ size);
+ return -ENOMEM;
+ }
+
+ param = &ab->rhash_peer_id_param;
+
+ param->key_offset = offsetof(struct ath11k_peer, peer_id);
+ param->head_offset = offsetof(struct ath11k_peer, rhash_id);
+ param->key_len = sizeof_field(struct ath11k_peer, peer_id);
+ param->automatic_shrinking = true;
+ param->nelem_hint = ab->num_radios * TARGET_NUM_PEERS_PDEV(ab);
+
+ ret = rhashtable_init(rhash_id_tbl, param);
+ if (ret) {
+ ath11k_warn(ab, "failed to init peer id rhash table %d\n", ret);
+ goto err_free;
+ }
+
+ spin_lock_bh(&ab->base_lock);
+
+ if (!ab->rhead_peer_id) {
+ ab->rhead_peer_id = rhash_id_tbl;
+ } else {
+ spin_unlock_bh(&ab->base_lock);
+ goto cleanup_tbl;
+ }
+
+ spin_unlock_bh(&ab->base_lock);
+
+ return 0;
+
+cleanup_tbl:
+ rhashtable_destroy(rhash_id_tbl);
+err_free:
+ kfree(rhash_id_tbl);
+
+ return ret;
+}
+
+static int ath11k_peer_rhash_addr_tbl_init(struct ath11k_base *ab)
+{
+ struct rhashtable_params *param;
+ struct rhashtable *rhash_addr_tbl;
+ int ret;
+ size_t size;
+
+ lockdep_assert_held(&ab->tbl_mtx_lock);
+
+ if (ab->rhead_peer_addr)
+ return 0;
+
+ size = sizeof(*ab->rhead_peer_addr);
+ rhash_addr_tbl = kzalloc(size, GFP_KERNEL);
+ if (!rhash_addr_tbl) {
+ ath11k_warn(ab, "failed to init rhash addr table due to no mem (size %zu)\n",
+ size);
+ return -ENOMEM;
+ }
+
+ param = &ab->rhash_peer_addr_param;
+
+ param->key_offset = offsetof(struct ath11k_peer, addr);
+ param->head_offset = offsetof(struct ath11k_peer, rhash_addr);
+ param->key_len = sizeof_field(struct ath11k_peer, addr);
+ param->automatic_shrinking = true;
+ param->nelem_hint = ab->num_radios * TARGET_NUM_PEERS_PDEV(ab);
+
+ ret = rhashtable_init(rhash_addr_tbl, param);
+ if (ret) {
+ ath11k_warn(ab, "failed to init peer addr rhash table %d\n", ret);
+ goto err_free;
+ }
+
+ spin_lock_bh(&ab->base_lock);
+
+ if (!ab->rhead_peer_addr) {
+ ab->rhead_peer_addr = rhash_addr_tbl;
+ } else {
+ spin_unlock_bh(&ab->base_lock);
+ goto cleanup_tbl;
+ }
+
+ spin_unlock_bh(&ab->base_lock);
+
+ return 0;
+
+cleanup_tbl:
+ rhashtable_destroy(rhash_addr_tbl);
+err_free:
+ kfree(rhash_addr_tbl);
+
+ return ret;
+}
+
+static inline void ath11k_peer_rhash_id_tbl_destroy(struct ath11k_base *ab)
+{
+ lockdep_assert_held(&ab->tbl_mtx_lock);
+
+ if (!ab->rhead_peer_id)
+ return;
+
+ rhashtable_destroy(ab->rhead_peer_id);
+ kfree(ab->rhead_peer_id);
+ ab->rhead_peer_id = NULL;
+}
+
+static inline void ath11k_peer_rhash_addr_tbl_destroy(struct ath11k_base *ab)
+{
+ lockdep_assert_held(&ab->tbl_mtx_lock);
+
+ if (!ab->rhead_peer_addr)
+ return;
+
+ rhashtable_destroy(ab->rhead_peer_addr);
+ kfree(ab->rhead_peer_addr);
+ ab->rhead_peer_addr = NULL;
+}
+
+int ath11k_peer_rhash_tbl_init(struct ath11k_base *ab)
+{
+ int ret;
+
+ mutex_lock(&ab->tbl_mtx_lock);
+
+ ret = ath11k_peer_rhash_id_tbl_init(ab);
+ if (ret)
+ goto out;
+
+ ret = ath11k_peer_rhash_addr_tbl_init(ab);
+ if (ret)
+ goto cleanup_tbl;
+
+ mutex_unlock(&ab->tbl_mtx_lock);
+
+ return 0;
+
+cleanup_tbl:
+ ath11k_peer_rhash_id_tbl_destroy(ab);
+out:
+ mutex_unlock(&ab->tbl_mtx_lock);
+ return ret;
+}
+
+void ath11k_peer_rhash_tbl_destroy(struct ath11k_base *ab)
+{
+ mutex_lock(&ab->tbl_mtx_lock);
+
+ ath11k_peer_rhash_addr_tbl_destroy(ab);
+ ath11k_peer_rhash_id_tbl_destroy(ab);
+
+ mutex_unlock(&ab->tbl_mtx_lock);
+}