From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- net/mac80211/vht.c | 781 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 781 insertions(+) create mode 100644 net/mac80211/vht.c (limited to 'net/mac80211/vht.c') diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c new file mode 100644 index 000000000..c1250aa47 --- /dev/null +++ b/net/mac80211/vht.c @@ -0,0 +1,781 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * VHT handling + * + * Portions of this file + * Copyright(c) 2015 - 2016 Intel Deutschland GmbH + * Copyright (C) 2018 - 2022 Intel Corporation + */ + +#include +#include +#include +#include "ieee80211_i.h" +#include "rate.h" + + +static void __check_vhtcap_disable(struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta_vht_cap *vht_cap, + u32 flag) +{ + __le32 le_flag = cpu_to_le32(flag); + + if (sdata->u.mgd.vht_capa_mask.vht_cap_info & le_flag && + !(sdata->u.mgd.vht_capa.vht_cap_info & le_flag)) + vht_cap->cap &= ~flag; +} + +void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta_vht_cap *vht_cap) +{ + int i; + u16 rxmcs_mask, rxmcs_cap, rxmcs_n, txmcs_mask, txmcs_cap, txmcs_n; + + if (!vht_cap->vht_supported) + return; + + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return; + + __check_vhtcap_disable(sdata, vht_cap, + IEEE80211_VHT_CAP_RXLDPC); + __check_vhtcap_disable(sdata, vht_cap, + IEEE80211_VHT_CAP_SHORT_GI_80); + __check_vhtcap_disable(sdata, vht_cap, + IEEE80211_VHT_CAP_SHORT_GI_160); + __check_vhtcap_disable(sdata, vht_cap, + IEEE80211_VHT_CAP_TXSTBC); + __check_vhtcap_disable(sdata, vht_cap, + IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE); + __check_vhtcap_disable(sdata, vht_cap, + IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE); + __check_vhtcap_disable(sdata, vht_cap, + IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN); + __check_vhtcap_disable(sdata, vht_cap, + IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN); + + /* Allow user to decrease AMPDU length exponent */ + if (sdata->u.mgd.vht_capa_mask.vht_cap_info & + cpu_to_le32(IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK)) { + u32 cap, n; + + n = le32_to_cpu(sdata->u.mgd.vht_capa.vht_cap_info) & + IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; + n >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; + cap = vht_cap->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; + cap >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; + + if (n < cap) { + vht_cap->cap &= + ~IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; + vht_cap->cap |= + n << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; + } + } + + /* Allow the user to decrease MCSes */ + rxmcs_mask = + le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.rx_mcs_map); + rxmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.rx_mcs_map); + rxmcs_n &= rxmcs_mask; + rxmcs_cap = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map); + + txmcs_mask = + le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.tx_mcs_map); + txmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.tx_mcs_map); + txmcs_n &= txmcs_mask; + txmcs_cap = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map); + for (i = 0; i < 8; i++) { + u8 m, n, c; + + m = (rxmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + n = (rxmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + c = (rxmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + + if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) || + n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) { + rxmcs_cap &= ~(3 << 2*i); + rxmcs_cap |= (rxmcs_n & (3 << 2*i)); + } + + m = (txmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + n = (txmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + c = (txmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + + if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) || + n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) { + txmcs_cap &= ~(3 << 2*i); + txmcs_cap |= (txmcs_n & (3 << 2*i)); + } + } + vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(rxmcs_cap); + vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(txmcs_cap); +} + +void +ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, + struct ieee80211_supported_band *sband, + const struct ieee80211_vht_cap *vht_cap_ie, + struct link_sta_info *link_sta) +{ + struct ieee80211_sta_vht_cap *vht_cap = &link_sta->pub->vht_cap; + struct ieee80211_sta_vht_cap own_cap; + u32 cap_info, i; + bool have_80mhz; + + memset(vht_cap, 0, sizeof(*vht_cap)); + + if (!link_sta->pub->ht_cap.ht_supported) + return; + + if (!vht_cap_ie || !sband->vht_cap.vht_supported) + return; + + /* Allow VHT if at least one channel on the sband supports 80 MHz */ + have_80mhz = false; + for (i = 0; i < sband->n_channels; i++) { + if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | + IEEE80211_CHAN_NO_80MHZ)) + continue; + + have_80mhz = true; + break; + } + + if (!have_80mhz) + return; + + /* + * A VHT STA must support 40 MHz, but if we verify that here + * then we break a few things - some APs (e.g. Netgear R6300v2 + * and others based on the BCM4360 chipset) will unset this + * capability bit when operating in 20 MHz. + */ + + vht_cap->vht_supported = true; + + own_cap = sband->vht_cap; + /* + * If user has specified capability overrides, take care + * of that if the station we're setting up is the AP that + * we advertised a restricted capability set to. Override + * our own capabilities and then use those below. + */ + if (sdata->vif.type == NL80211_IFTYPE_STATION && + !test_sta_flag(link_sta->sta, WLAN_STA_TDLS_PEER)) + ieee80211_apply_vhtcap_overrides(sdata, &own_cap); + + /* take some capabilities as-is */ + cap_info = le32_to_cpu(vht_cap_ie->vht_cap_info); + vht_cap->cap = cap_info; + vht_cap->cap &= IEEE80211_VHT_CAP_RXLDPC | + IEEE80211_VHT_CAP_VHT_TXOP_PS | + IEEE80211_VHT_CAP_HTC_VHT | + IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK | + IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB | + IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB | + IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | + IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN; + + vht_cap->cap |= min_t(u32, cap_info & IEEE80211_VHT_CAP_MAX_MPDU_MASK, + own_cap.cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK); + + /* and some based on our own capabilities */ + switch (own_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { + case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ: + vht_cap->cap |= cap_info & + IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; + break; + case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ: + vht_cap->cap |= cap_info & + IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; + break; + default: + /* nothing */ + break; + } + + /* symmetric capabilities */ + vht_cap->cap |= cap_info & own_cap.cap & + (IEEE80211_VHT_CAP_SHORT_GI_80 | + IEEE80211_VHT_CAP_SHORT_GI_160); + + /* remaining ones */ + if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE) + vht_cap->cap |= cap_info & + (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | + IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK); + + if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE) + vht_cap->cap |= cap_info & + (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | + IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK); + + if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE) + vht_cap->cap |= cap_info & + IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; + + if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) + vht_cap->cap |= cap_info & + IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE; + + if (own_cap.cap & IEEE80211_VHT_CAP_TXSTBC) + vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_RXSTBC_MASK; + + if (own_cap.cap & IEEE80211_VHT_CAP_RXSTBC_MASK) + vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_TXSTBC; + + /* Copy peer MCS info, the driver might need them. */ + memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs, + sizeof(struct ieee80211_vht_mcs_info)); + + /* copy EXT_NSS_BW Support value or remove the capability */ + if (ieee80211_hw_check(&sdata->local->hw, SUPPORTS_VHT_EXT_NSS_BW)) + vht_cap->cap |= (cap_info & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); + else + vht_cap->vht_mcs.tx_highest &= + ~cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); + + /* but also restrict MCSes */ + for (i = 0; i < 8; i++) { + u16 own_rx, own_tx, peer_rx, peer_tx; + + own_rx = le16_to_cpu(own_cap.vht_mcs.rx_mcs_map); + own_rx = (own_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + + own_tx = le16_to_cpu(own_cap.vht_mcs.tx_mcs_map); + own_tx = (own_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + + peer_rx = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map); + peer_rx = (peer_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + + peer_tx = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map); + peer_tx = (peer_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + + if (peer_tx != IEEE80211_VHT_MCS_NOT_SUPPORTED) { + if (own_rx == IEEE80211_VHT_MCS_NOT_SUPPORTED) + peer_tx = IEEE80211_VHT_MCS_NOT_SUPPORTED; + else if (own_rx < peer_tx) + peer_tx = own_rx; + } + + if (peer_rx != IEEE80211_VHT_MCS_NOT_SUPPORTED) { + if (own_tx == IEEE80211_VHT_MCS_NOT_SUPPORTED) + peer_rx = IEEE80211_VHT_MCS_NOT_SUPPORTED; + else if (own_tx < peer_rx) + peer_rx = own_tx; + } + + vht_cap->vht_mcs.rx_mcs_map &= + ~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2); + vht_cap->vht_mcs.rx_mcs_map |= cpu_to_le16(peer_rx << i * 2); + + vht_cap->vht_mcs.tx_mcs_map &= + ~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2); + vht_cap->vht_mcs.tx_mcs_map |= cpu_to_le16(peer_tx << i * 2); + } + + /* + * This is a workaround for VHT-enabled STAs which break the spec + * and have the VHT-MCS Rx map filled in with value 3 for all eight + * spacial streams, an example is AR9462. + * + * As per spec, in section 22.1.1 Introduction to the VHT PHY + * A VHT STA shall support at least single spactial stream VHT-MCSs + * 0 to 7 (transmit and receive) in all supported channel widths. + */ + if (vht_cap->vht_mcs.rx_mcs_map == cpu_to_le16(0xFFFF)) { + vht_cap->vht_supported = false; + sdata_info(sdata, + "Ignoring VHT IE from %pM (link:%pM) due to invalid rx_mcs_map\n", + link_sta->sta->addr, link_sta->addr); + return; + } + + /* finally set up the bandwidth */ + switch (vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { + case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ: + case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ: + link_sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160; + break; + default: + link_sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80; + + if (!(vht_cap->vht_mcs.tx_highest & + cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE))) + break; + + /* + * If this is non-zero, then it does support 160 MHz after all, + * in one form or the other. We don't distinguish here (or even + * above) between 160 and 80+80 yet. + */ + if (cap_info & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) + link_sta->cur_max_bandwidth = + IEEE80211_STA_RX_BW_160; + } + + link_sta->pub->bandwidth = ieee80211_sta_cur_vht_bw(link_sta); + + /* + * FIXME - should the amsdu len be per link? store per link + * and maintain a minimum? + */ + switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) { + case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: + link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454; + break; + case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: + link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991; + break; + case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: + default: + link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895; + break; + } + + ieee80211_sta_recalc_aggregates(&link_sta->sta->sta); +} + +/* FIXME: move this to some better location - parses HE/EHT now */ +enum ieee80211_sta_rx_bandwidth +ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta) +{ + unsigned int link_id = link_sta->link_id; + struct ieee80211_sub_if_data *sdata = link_sta->sta->sdata; + struct ieee80211_sta_vht_cap *vht_cap = &link_sta->pub->vht_cap; + struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap; + struct ieee80211_sta_eht_cap *eht_cap = &link_sta->pub->eht_cap; + u32 cap_width; + + if (he_cap->has_he) { + struct ieee80211_bss_conf *link_conf; + enum ieee80211_sta_rx_bandwidth ret; + u8 info; + + rcu_read_lock(); + link_conf = rcu_dereference(sdata->vif.link_conf[link_id]); + + if (eht_cap->has_eht && + link_conf->chandef.chan->band == NL80211_BAND_6GHZ) { + info = eht_cap->eht_cap_elem.phy_cap_info[0]; + + if (info & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ) { + ret = IEEE80211_STA_RX_BW_320; + goto out; + } + } + + info = he_cap->he_cap_elem.phy_cap_info[0]; + + if (link_conf->chandef.chan->band == NL80211_BAND_2GHZ) { + if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G) + ret = IEEE80211_STA_RX_BW_40; + else + ret = IEEE80211_STA_RX_BW_20; + goto out; + } + + if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G || + info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) + ret = IEEE80211_STA_RX_BW_160; + else if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G) + ret = IEEE80211_STA_RX_BW_80; + else + ret = IEEE80211_STA_RX_BW_20; +out: + rcu_read_unlock(); + + return ret; + } + + if (!vht_cap->vht_supported) + return link_sta->pub->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? + IEEE80211_STA_RX_BW_40 : + IEEE80211_STA_RX_BW_20; + + cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; + + if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ || + cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) + return IEEE80211_STA_RX_BW_160; + + /* + * If this is non-zero, then it does support 160 MHz after all, + * in one form or the other. We don't distinguish here (or even + * above) between 160 and 80+80 yet. + */ + if (vht_cap->cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) + return IEEE80211_STA_RX_BW_160; + + return IEEE80211_STA_RX_BW_80; +} + +enum nl80211_chan_width +ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta) +{ + struct ieee80211_sta_vht_cap *vht_cap = &link_sta->pub->vht_cap; + u32 cap_width; + + if (!vht_cap->vht_supported) { + if (!link_sta->pub->ht_cap.ht_supported) + return NL80211_CHAN_WIDTH_20_NOHT; + + return link_sta->pub->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? + NL80211_CHAN_WIDTH_40 : NL80211_CHAN_WIDTH_20; + } + + cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; + + if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ) + return NL80211_CHAN_WIDTH_160; + else if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) + return NL80211_CHAN_WIDTH_80P80; + + return NL80211_CHAN_WIDTH_80; +} + +enum nl80211_chan_width +ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *link_sta) +{ + enum ieee80211_sta_rx_bandwidth cur_bw = + link_sta->pub->bandwidth; + struct ieee80211_sta_vht_cap *vht_cap = + &link_sta->pub->vht_cap; + u32 cap_width; + + switch (cur_bw) { + case IEEE80211_STA_RX_BW_20: + if (!link_sta->pub->ht_cap.ht_supported) + return NL80211_CHAN_WIDTH_20_NOHT; + else + return NL80211_CHAN_WIDTH_20; + case IEEE80211_STA_RX_BW_40: + return NL80211_CHAN_WIDTH_40; + case IEEE80211_STA_RX_BW_80: + return NL80211_CHAN_WIDTH_80; + case IEEE80211_STA_RX_BW_160: + cap_width = + vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; + + if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ) + return NL80211_CHAN_WIDTH_160; + + return NL80211_CHAN_WIDTH_80P80; + default: + return NL80211_CHAN_WIDTH_20; + } +} + +enum ieee80211_sta_rx_bandwidth +ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width) +{ + switch (width) { + case NL80211_CHAN_WIDTH_20_NOHT: + case NL80211_CHAN_WIDTH_20: + return IEEE80211_STA_RX_BW_20; + case NL80211_CHAN_WIDTH_40: + return IEEE80211_STA_RX_BW_40; + case NL80211_CHAN_WIDTH_80: + return IEEE80211_STA_RX_BW_80; + case NL80211_CHAN_WIDTH_160: + case NL80211_CHAN_WIDTH_80P80: + return IEEE80211_STA_RX_BW_160; + case NL80211_CHAN_WIDTH_320: + return IEEE80211_STA_RX_BW_320; + default: + WARN_ON_ONCE(1); + return IEEE80211_STA_RX_BW_20; + } +} + +/* FIXME: rename/move - this deals with everything not just VHT */ +enum ieee80211_sta_rx_bandwidth +ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta) +{ + struct sta_info *sta = link_sta->sta; + struct ieee80211_bss_conf *link_conf; + enum nl80211_chan_width bss_width; + enum ieee80211_sta_rx_bandwidth bw; + + rcu_read_lock(); + link_conf = rcu_dereference(sta->sdata->vif.link_conf[link_sta->link_id]); + if (WARN_ON(!link_conf)) + bss_width = NL80211_CHAN_WIDTH_20_NOHT; + else + bss_width = link_conf->chandef.width; + rcu_read_unlock(); + + bw = ieee80211_sta_cap_rx_bw(link_sta); + bw = min(bw, link_sta->cur_max_bandwidth); + + /* Don't consider AP's bandwidth for TDLS peers, section 11.23.1 of + * IEEE80211-2016 specification makes higher bandwidth operation + * possible on the TDLS link if the peers have wider bandwidth + * capability. + * + * However, in this case, and only if the TDLS peer is authorized, + * limit to the tdls_chandef so that the configuration here isn't + * wider than what's actually requested on the channel context. + */ + if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && + test_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW) && + test_sta_flag(sta, WLAN_STA_AUTHORIZED) && + sta->tdls_chandef.chan) + bw = min(bw, ieee80211_chan_width_to_rx_bw(sta->tdls_chandef.width)); + else + bw = min(bw, ieee80211_chan_width_to_rx_bw(bss_width)); + + return bw; +} + +void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta) +{ + u8 ht_rx_nss = 0, vht_rx_nss = 0, he_rx_nss = 0, eht_rx_nss = 0, rx_nss; + bool support_160; + + /* if we received a notification already don't overwrite it */ + if (link_sta->pub->rx_nss) + return; + + if (link_sta->pub->eht_cap.has_eht) { + int i; + const u8 *rx_nss_mcs = (void *)&link_sta->pub->eht_cap.eht_mcs_nss_supp; + + /* get the max nss for EHT over all possible bandwidths and mcs */ + for (i = 0; i < sizeof(struct ieee80211_eht_mcs_nss_supp); i++) + eht_rx_nss = max_t(u8, eht_rx_nss, + u8_get_bits(rx_nss_mcs[i], + IEEE80211_EHT_MCS_NSS_RX)); + } + + if (link_sta->pub->he_cap.has_he) { + int i; + u8 rx_mcs_80 = 0, rx_mcs_160 = 0; + const struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap; + u16 mcs_160_map = + le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160); + u16 mcs_80_map = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80); + + for (i = 7; i >= 0; i--) { + u8 mcs_160 = (mcs_160_map >> (2 * i)) & 3; + + if (mcs_160 != IEEE80211_HE_MCS_NOT_SUPPORTED) { + rx_mcs_160 = i + 1; + break; + } + } + for (i = 7; i >= 0; i--) { + u8 mcs_80 = (mcs_80_map >> (2 * i)) & 3; + + if (mcs_80 != IEEE80211_HE_MCS_NOT_SUPPORTED) { + rx_mcs_80 = i + 1; + break; + } + } + + support_160 = he_cap->he_cap_elem.phy_cap_info[0] & + IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; + + if (support_160) + he_rx_nss = min(rx_mcs_80, rx_mcs_160); + else + he_rx_nss = rx_mcs_80; + } + + if (link_sta->pub->ht_cap.ht_supported) { + if (link_sta->pub->ht_cap.mcs.rx_mask[0]) + ht_rx_nss++; + if (link_sta->pub->ht_cap.mcs.rx_mask[1]) + ht_rx_nss++; + if (link_sta->pub->ht_cap.mcs.rx_mask[2]) + ht_rx_nss++; + if (link_sta->pub->ht_cap.mcs.rx_mask[3]) + ht_rx_nss++; + /* FIXME: consider rx_highest? */ + } + + if (link_sta->pub->vht_cap.vht_supported) { + int i; + u16 rx_mcs_map; + + rx_mcs_map = le16_to_cpu(link_sta->pub->vht_cap.vht_mcs.rx_mcs_map); + + for (i = 7; i >= 0; i--) { + u8 mcs = (rx_mcs_map >> (2 * i)) & 3; + + if (mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED) { + vht_rx_nss = i + 1; + break; + } + } + /* FIXME: consider rx_highest? */ + } + + rx_nss = max(vht_rx_nss, ht_rx_nss); + rx_nss = max(he_rx_nss, rx_nss); + rx_nss = max(eht_rx_nss, rx_nss); + link_sta->pub->rx_nss = max_t(u8, 1, rx_nss); +} + +u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, + struct link_sta_info *link_sta, + u8 opmode, enum nl80211_band band) +{ + enum ieee80211_sta_rx_bandwidth new_bw; + struct sta_opmode_info sta_opmode = {}; + u32 changed = 0; + u8 nss, cur_nss; + + /* ignore - no support for BF yet */ + if (opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF) + return 0; + + nss = opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; + nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; + nss += 1; + + if (link_sta->pub->rx_nss != nss) { + cur_nss = link_sta->pub->rx_nss; + /* Reset rx_nss and call ieee80211_sta_set_rx_nss() which + * will set the same to max nss value calculated based on capability. + */ + link_sta->pub->rx_nss = 0; + ieee80211_sta_set_rx_nss(link_sta); + /* Do not allow an nss change to rx_nss greater than max_nss + * negotiated and capped to APs capability during association. + */ + if (nss <= link_sta->pub->rx_nss) { + link_sta->pub->rx_nss = nss; + sta_opmode.rx_nss = nss; + changed |= IEEE80211_RC_NSS_CHANGED; + sta_opmode.changed |= STA_OPMODE_N_SS_CHANGED; + } else { + link_sta->pub->rx_nss = cur_nss; + pr_warn_ratelimited("Ignoring NSS change in VHT Operating Mode Notification from %pM with invalid nss %d", + link_sta->pub->addr, nss); + } + } + + switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) { + case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ: + /* ignore IEEE80211_OPMODE_NOTIF_BW_160_80P80 must not be set */ + link_sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20; + break; + case IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ: + /* ignore IEEE80211_OPMODE_NOTIF_BW_160_80P80 must not be set */ + link_sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_40; + break; + case IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ: + if (opmode & IEEE80211_OPMODE_NOTIF_BW_160_80P80) + link_sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160; + else + link_sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80; + break; + case IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ: + /* legacy only, no longer used by newer spec */ + link_sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160; + break; + } + + new_bw = ieee80211_sta_cur_vht_bw(link_sta); + if (new_bw != link_sta->pub->bandwidth) { + link_sta->pub->bandwidth = new_bw; + sta_opmode.bw = ieee80211_sta_rx_bw_to_chan_width(link_sta); + changed |= IEEE80211_RC_BW_CHANGED; + sta_opmode.changed |= STA_OPMODE_MAX_BW_CHANGED; + } + + if (sta_opmode.changed) + cfg80211_sta_opmode_change_notify(sdata->dev, link_sta->addr, + &sta_opmode, GFP_KERNEL); + + return changed; +} + +void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, + struct ieee80211_link_data *link, + struct ieee80211_mgmt *mgmt) +{ + struct ieee80211_bss_conf *link_conf = link->conf; + + if (!link_conf->mu_mimo_owner) + return; + + if (!memcmp(mgmt->u.action.u.vht_group_notif.position, + link_conf->mu_group.position, WLAN_USER_POSITION_LEN) && + !memcmp(mgmt->u.action.u.vht_group_notif.membership, + link_conf->mu_group.membership, WLAN_MEMBERSHIP_LEN)) + return; + + memcpy(link_conf->mu_group.membership, + mgmt->u.action.u.vht_group_notif.membership, + WLAN_MEMBERSHIP_LEN); + memcpy(link_conf->mu_group.position, + mgmt->u.action.u.vht_group_notif.position, + WLAN_USER_POSITION_LEN); + + ieee80211_link_info_change_notify(sdata, link, + BSS_CHANGED_MU_GROUPS); +} + +void ieee80211_update_mu_groups(struct ieee80211_vif *vif, unsigned int link_id, + const u8 *membership, const u8 *position) +{ + struct ieee80211_bss_conf *link_conf; + + rcu_read_lock(); + link_conf = rcu_dereference(vif->link_conf[link_id]); + + if (!WARN_ON_ONCE(!link_conf || !link_conf->mu_mimo_owner)) { + memcpy(link_conf->mu_group.membership, membership, + WLAN_MEMBERSHIP_LEN); + memcpy(link_conf->mu_group.position, position, + WLAN_USER_POSITION_LEN); + } + rcu_read_unlock(); +} +EXPORT_SYMBOL_GPL(ieee80211_update_mu_groups); + +void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, + struct link_sta_info *link_sta, + u8 opmode, enum nl80211_band band) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; + + u32 changed = __ieee80211_vht_handle_opmode(sdata, link_sta, + opmode, band); + + if (changed > 0) { + ieee80211_recalc_min_chandef(sdata, link_sta->link_id); + rate_control_rate_update(local, sband, link_sta->sta, + link_sta->link_id, changed); + } +} + +void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, + u16 vht_mask[NL80211_VHT_NSS_MAX]) +{ + int i; + u16 mask, cap = le16_to_cpu(vht_cap); + + for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { + mask = (cap >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; + switch (mask) { + case IEEE80211_VHT_MCS_SUPPORT_0_7: + vht_mask[i] = 0x00FF; + break; + case IEEE80211_VHT_MCS_SUPPORT_0_8: + vht_mask[i] = 0x01FF; + break; + case IEEE80211_VHT_MCS_SUPPORT_0_9: + vht_mask[i] = 0x03FF; + break; + case IEEE80211_VHT_MCS_NOT_SUPPORTED: + default: + vht_mask[i] = 0; + break; + } + } +} -- cgit v1.2.3