diff options
author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /net/wireless/pmsr.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
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 'net/wireless/pmsr.c')
-rw-r--r-- | net/wireless/pmsr.c | 661 |
1 files changed, 661 insertions, 0 deletions
diff --git a/net/wireless/pmsr.c b/net/wireless/pmsr.c new file mode 100644 index 000000000..2bc647720 --- /dev/null +++ b/net/wireless/pmsr.c @@ -0,0 +1,661 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2018 - 2021 Intel Corporation + */ +#include <net/cfg80211.h> +#include "core.h" +#include "nl80211.h" +#include "rdev-ops.h" + +static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev, + struct nlattr *ftmreq, + struct cfg80211_pmsr_request_peer *out, + struct genl_info *info) +{ + const struct cfg80211_pmsr_capabilities *capa = rdev->wiphy.pmsr_capa; + struct nlattr *tb[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1]; + u32 preamble = NL80211_PREAMBLE_DMG; /* only optional in DMG */ + + /* validate existing data */ + if (!(rdev->wiphy.pmsr_capa->ftm.bandwidths & BIT(out->chandef.width))) { + NL_SET_ERR_MSG(info->extack, "FTM: unsupported bandwidth"); + return -EINVAL; + } + + /* no validation needed - was already done via nested policy */ + nla_parse_nested_deprecated(tb, NL80211_PMSR_FTM_REQ_ATTR_MAX, ftmreq, + NULL, NULL); + + if (tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]) + preamble = nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]); + + /* set up values - struct is 0-initialized */ + out->ftm.requested = true; + + switch (out->chandef.chan->band) { + case NL80211_BAND_60GHZ: + /* optional */ + break; + default: + if (!tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]) { + NL_SET_ERR_MSG(info->extack, + "FTM: must specify preamble"); + return -EINVAL; + } + } + + if (!(capa->ftm.preambles & BIT(preamble))) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE], + "FTM: invalid preamble"); + return -EINVAL; + } + + out->ftm.preamble = preamble; + + out->ftm.burst_period = 0; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD]) + out->ftm.burst_period = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD]); + + out->ftm.asap = !!tb[NL80211_PMSR_FTM_REQ_ATTR_ASAP]; + if (out->ftm.asap && !capa->ftm.asap) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_ASAP], + "FTM: ASAP mode not supported"); + return -EINVAL; + } + + if (!out->ftm.asap && !capa->ftm.non_asap) { + NL_SET_ERR_MSG(info->extack, + "FTM: non-ASAP mode not supported"); + return -EINVAL; + } + + out->ftm.num_bursts_exp = 0; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP]) + out->ftm.num_bursts_exp = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP]); + + if (capa->ftm.max_bursts_exponent >= 0 && + out->ftm.num_bursts_exp > capa->ftm.max_bursts_exponent) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP], + "FTM: max NUM_BURSTS_EXP must be set lower than the device limit"); + return -EINVAL; + } + + out->ftm.burst_duration = 15; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION]) + out->ftm.burst_duration = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION]); + + out->ftm.ftms_per_burst = 0; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST]) + out->ftm.ftms_per_burst = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST]); + + if (capa->ftm.max_ftms_per_burst && + (out->ftm.ftms_per_burst > capa->ftm.max_ftms_per_burst || + out->ftm.ftms_per_burst == 0)) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST], + "FTM: FTMs per burst must be set lower than the device limit but non-zero"); + return -EINVAL; + } + + out->ftm.ftmr_retries = 3; + if (tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES]) + out->ftm.ftmr_retries = + nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES]); + + out->ftm.request_lci = !!tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI]; + if (out->ftm.request_lci && !capa->ftm.request_lci) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI], + "FTM: LCI request not supported"); + } + + out->ftm.request_civicloc = + !!tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC]; + if (out->ftm.request_civicloc && !capa->ftm.request_civicloc) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC], + "FTM: civic location request not supported"); + } + + out->ftm.trigger_based = + !!tb[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED]; + if (out->ftm.trigger_based && !capa->ftm.trigger_based) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED], + "FTM: trigger based ranging is not supported"); + return -EINVAL; + } + + out->ftm.non_trigger_based = + !!tb[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED]; + if (out->ftm.non_trigger_based && !capa->ftm.non_trigger_based) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED], + "FTM: trigger based ranging is not supported"); + return -EINVAL; + } + + if (out->ftm.trigger_based && out->ftm.non_trigger_based) { + NL_SET_ERR_MSG(info->extack, + "FTM: can't set both trigger based and non trigger based"); + return -EINVAL; + } + + if ((out->ftm.trigger_based || out->ftm.non_trigger_based) && + out->ftm.preamble != NL80211_PREAMBLE_HE) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE], + "FTM: non EDCA based ranging must use HE preamble"); + return -EINVAL; + } + + out->ftm.lmr_feedback = + !!tb[NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK]; + if (!out->ftm.trigger_based && !out->ftm.non_trigger_based && + out->ftm.lmr_feedback) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK], + "FTM: LMR feedback set for EDCA based ranging"); + return -EINVAL; + } + + if (tb[NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR]) { + if (!out->ftm.non_trigger_based && !out->ftm.trigger_based) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR], + "FTM: BSS color set for EDCA based ranging"); + return -EINVAL; + } + + out->ftm.bss_color = + nla_get_u8(tb[NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR]); + } + + return 0; +} + +static int pmsr_parse_peer(struct cfg80211_registered_device *rdev, + struct nlattr *peer, + struct cfg80211_pmsr_request_peer *out, + struct genl_info *info) +{ + struct nlattr *tb[NL80211_PMSR_PEER_ATTR_MAX + 1]; + struct nlattr *req[NL80211_PMSR_REQ_ATTR_MAX + 1]; + struct nlattr *treq; + int err, rem; + + /* no validation needed - was already done via nested policy */ + nla_parse_nested_deprecated(tb, NL80211_PMSR_PEER_ATTR_MAX, peer, + NULL, NULL); + + if (!tb[NL80211_PMSR_PEER_ATTR_ADDR] || + !tb[NL80211_PMSR_PEER_ATTR_CHAN] || + !tb[NL80211_PMSR_PEER_ATTR_REQ]) { + NL_SET_ERR_MSG_ATTR(info->extack, peer, + "insufficient peer data"); + return -EINVAL; + } + + memcpy(out->addr, nla_data(tb[NL80211_PMSR_PEER_ATTR_ADDR]), ETH_ALEN); + + /* reuse info->attrs */ + memset(info->attrs, 0, sizeof(*info->attrs) * (NL80211_ATTR_MAX + 1)); + err = nla_parse_nested_deprecated(info->attrs, NL80211_ATTR_MAX, + tb[NL80211_PMSR_PEER_ATTR_CHAN], + NULL, info->extack); + if (err) + return err; + + err = nl80211_parse_chandef(rdev, info, &out->chandef); + if (err) + return err; + + /* no validation needed - was already done via nested policy */ + nla_parse_nested_deprecated(req, NL80211_PMSR_REQ_ATTR_MAX, + tb[NL80211_PMSR_PEER_ATTR_REQ], NULL, + NULL); + + if (!req[NL80211_PMSR_REQ_ATTR_DATA]) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[NL80211_PMSR_PEER_ATTR_REQ], + "missing request type/data"); + return -EINVAL; + } + + if (req[NL80211_PMSR_REQ_ATTR_GET_AP_TSF]) + out->report_ap_tsf = true; + + if (out->report_ap_tsf && !rdev->wiphy.pmsr_capa->report_ap_tsf) { + NL_SET_ERR_MSG_ATTR(info->extack, + req[NL80211_PMSR_REQ_ATTR_GET_AP_TSF], + "reporting AP TSF is not supported"); + return -EINVAL; + } + + nla_for_each_nested(treq, req[NL80211_PMSR_REQ_ATTR_DATA], rem) { + switch (nla_type(treq)) { + case NL80211_PMSR_TYPE_FTM: + err = pmsr_parse_ftm(rdev, treq, out, info); + break; + default: + NL_SET_ERR_MSG_ATTR(info->extack, treq, + "unsupported measurement type"); + err = -EINVAL; + } + } + + if (err) + return err; + + return 0; +} + +int nl80211_pmsr_start(struct sk_buff *skb, struct genl_info *info) +{ + struct nlattr *reqattr = info->attrs[NL80211_ATTR_PEER_MEASUREMENTS]; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct wireless_dev *wdev = info->user_ptr[1]; + struct cfg80211_pmsr_request *req; + struct nlattr *peers, *peer; + int count, rem, err, idx; + + if (!rdev->wiphy.pmsr_capa) + return -EOPNOTSUPP; + + if (!reqattr) + return -EINVAL; + + peers = nla_find(nla_data(reqattr), nla_len(reqattr), + NL80211_PMSR_ATTR_PEERS); + if (!peers) + return -EINVAL; + + count = 0; + nla_for_each_nested(peer, peers, rem) { + count++; + + if (count > rdev->wiphy.pmsr_capa->max_peers) { + NL_SET_ERR_MSG_ATTR(info->extack, peer, + "Too many peers used"); + return -EINVAL; + } + } + + req = kzalloc(struct_size(req, peers, count), GFP_KERNEL); + if (!req) + return -ENOMEM; + + if (info->attrs[NL80211_ATTR_TIMEOUT]) + req->timeout = nla_get_u32(info->attrs[NL80211_ATTR_TIMEOUT]); + + if (info->attrs[NL80211_ATTR_MAC]) { + if (!rdev->wiphy.pmsr_capa->randomize_mac_addr) { + NL_SET_ERR_MSG_ATTR(info->extack, + info->attrs[NL80211_ATTR_MAC], + "device cannot randomize MAC address"); + err = -EINVAL; + goto out_err; + } + + err = nl80211_parse_random_mac(info->attrs, req->mac_addr, + req->mac_addr_mask); + if (err) + goto out_err; + } else { + memcpy(req->mac_addr, wdev_address(wdev), ETH_ALEN); + eth_broadcast_addr(req->mac_addr_mask); + } + + idx = 0; + nla_for_each_nested(peer, peers, rem) { + /* NB: this reuses info->attrs, but we no longer need it */ + err = pmsr_parse_peer(rdev, peer, &req->peers[idx], info); + if (err) + goto out_err; + idx++; + } + + req->n_peers = count; + req->cookie = cfg80211_assign_cookie(rdev); + req->nl_portid = info->snd_portid; + + err = rdev_start_pmsr(rdev, wdev, req); + if (err) + goto out_err; + + list_add_tail(&req->list, &wdev->pmsr_list); + + nl_set_extack_cookie_u64(info->extack, req->cookie); + return 0; +out_err: + kfree(req); + return err; +} + +void cfg80211_pmsr_complete(struct wireless_dev *wdev, + struct cfg80211_pmsr_request *req, + gfp_t gfp) +{ + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + struct cfg80211_pmsr_request *tmp, *prev, *to_free = NULL; + struct sk_buff *msg; + void *hdr; + + trace_cfg80211_pmsr_complete(wdev->wiphy, wdev, req->cookie); + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); + if (!msg) + goto free_request; + + hdr = nl80211hdr_put(msg, 0, 0, 0, + NL80211_CMD_PEER_MEASUREMENT_COMPLETE); + if (!hdr) + goto free_msg; + + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || + nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), + NL80211_ATTR_PAD)) + goto free_msg; + + if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->cookie, + NL80211_ATTR_PAD)) + goto free_msg; + + genlmsg_end(msg, hdr); + genlmsg_unicast(wiphy_net(wdev->wiphy), msg, req->nl_portid); + goto free_request; +free_msg: + nlmsg_free(msg); +free_request: + spin_lock_bh(&wdev->pmsr_lock); + /* + * cfg80211_pmsr_process_abort() may have already moved this request + * to the free list, and will free it later. In this case, don't free + * it here. + */ + list_for_each_entry_safe(tmp, prev, &wdev->pmsr_list, list) { + if (tmp == req) { + list_del(&req->list); + to_free = req; + break; + } + } + spin_unlock_bh(&wdev->pmsr_lock); + kfree(to_free); +} +EXPORT_SYMBOL_GPL(cfg80211_pmsr_complete); + +static int nl80211_pmsr_send_ftm_res(struct sk_buff *msg, + struct cfg80211_pmsr_result *res) +{ + if (res->status == NL80211_PMSR_STATUS_FAILURE) { + if (nla_put_u32(msg, NL80211_PMSR_FTM_RESP_ATTR_FAIL_REASON, + res->ftm.failure_reason)) + goto error; + + if (res->ftm.failure_reason == + NL80211_PMSR_FTM_FAILURE_PEER_BUSY && + res->ftm.busy_retry_time && + nla_put_u32(msg, NL80211_PMSR_FTM_RESP_ATTR_BUSY_RETRY_TIME, + res->ftm.busy_retry_time)) + goto error; + + return 0; + } + +#define PUT(tp, attr, val) \ + do { \ + if (nla_put_##tp(msg, \ + NL80211_PMSR_FTM_RESP_ATTR_##attr, \ + res->ftm.val)) \ + goto error; \ + } while (0) + +#define PUTOPT(tp, attr, val) \ + do { \ + if (res->ftm.val##_valid) \ + PUT(tp, attr, val); \ + } while (0) + +#define PUT_U64(attr, val) \ + do { \ + if (nla_put_u64_64bit(msg, \ + NL80211_PMSR_FTM_RESP_ATTR_##attr,\ + res->ftm.val, \ + NL80211_PMSR_FTM_RESP_ATTR_PAD)) \ + goto error; \ + } while (0) + +#define PUTOPT_U64(attr, val) \ + do { \ + if (res->ftm.val##_valid) \ + PUT_U64(attr, val); \ + } while (0) + + if (res->ftm.burst_index >= 0) + PUT(u32, BURST_INDEX, burst_index); + PUTOPT(u32, NUM_FTMR_ATTEMPTS, num_ftmr_attempts); + PUTOPT(u32, NUM_FTMR_SUCCESSES, num_ftmr_successes); + PUT(u8, NUM_BURSTS_EXP, num_bursts_exp); + PUT(u8, BURST_DURATION, burst_duration); + PUT(u8, FTMS_PER_BURST, ftms_per_burst); + PUTOPT(s32, RSSI_AVG, rssi_avg); + PUTOPT(s32, RSSI_SPREAD, rssi_spread); + if (res->ftm.tx_rate_valid && + !nl80211_put_sta_rate(msg, &res->ftm.tx_rate, + NL80211_PMSR_FTM_RESP_ATTR_TX_RATE)) + goto error; + if (res->ftm.rx_rate_valid && + !nl80211_put_sta_rate(msg, &res->ftm.rx_rate, + NL80211_PMSR_FTM_RESP_ATTR_RX_RATE)) + goto error; + PUTOPT_U64(RTT_AVG, rtt_avg); + PUTOPT_U64(RTT_VARIANCE, rtt_variance); + PUTOPT_U64(RTT_SPREAD, rtt_spread); + PUTOPT_U64(DIST_AVG, dist_avg); + PUTOPT_U64(DIST_VARIANCE, dist_variance); + PUTOPT_U64(DIST_SPREAD, dist_spread); + if (res->ftm.lci && res->ftm.lci_len && + nla_put(msg, NL80211_PMSR_FTM_RESP_ATTR_LCI, + res->ftm.lci_len, res->ftm.lci)) + goto error; + if (res->ftm.civicloc && res->ftm.civicloc_len && + nla_put(msg, NL80211_PMSR_FTM_RESP_ATTR_CIVICLOC, + res->ftm.civicloc_len, res->ftm.civicloc)) + goto error; +#undef PUT +#undef PUTOPT +#undef PUT_U64 +#undef PUTOPT_U64 + + return 0; +error: + return -ENOSPC; +} + +static int nl80211_pmsr_send_result(struct sk_buff *msg, + struct cfg80211_pmsr_result *res) +{ + struct nlattr *pmsr, *peers, *peer, *resp, *data, *typedata; + + pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS); + if (!pmsr) + goto error; + + peers = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_PEERS); + if (!peers) + goto error; + + peer = nla_nest_start_noflag(msg, 1); + if (!peer) + goto error; + + if (nla_put(msg, NL80211_PMSR_PEER_ATTR_ADDR, ETH_ALEN, res->addr)) + goto error; + + resp = nla_nest_start_noflag(msg, NL80211_PMSR_PEER_ATTR_RESP); + if (!resp) + goto error; + + if (nla_put_u32(msg, NL80211_PMSR_RESP_ATTR_STATUS, res->status) || + nla_put_u64_64bit(msg, NL80211_PMSR_RESP_ATTR_HOST_TIME, + res->host_time, NL80211_PMSR_RESP_ATTR_PAD)) + goto error; + + if (res->ap_tsf_valid && + nla_put_u64_64bit(msg, NL80211_PMSR_RESP_ATTR_AP_TSF, + res->ap_tsf, NL80211_PMSR_RESP_ATTR_PAD)) + goto error; + + if (res->final && nla_put_flag(msg, NL80211_PMSR_RESP_ATTR_FINAL)) + goto error; + + data = nla_nest_start_noflag(msg, NL80211_PMSR_RESP_ATTR_DATA); + if (!data) + goto error; + + typedata = nla_nest_start_noflag(msg, res->type); + if (!typedata) + goto error; + + switch (res->type) { + case NL80211_PMSR_TYPE_FTM: + if (nl80211_pmsr_send_ftm_res(msg, res)) + goto error; + break; + default: + WARN_ON(1); + } + + nla_nest_end(msg, typedata); + nla_nest_end(msg, data); + nla_nest_end(msg, resp); + nla_nest_end(msg, peer); + nla_nest_end(msg, peers); + nla_nest_end(msg, pmsr); + + return 0; +error: + return -ENOSPC; +} + +void cfg80211_pmsr_report(struct wireless_dev *wdev, + struct cfg80211_pmsr_request *req, + struct cfg80211_pmsr_result *result, + gfp_t gfp) +{ + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + struct sk_buff *msg; + void *hdr; + int err; + + trace_cfg80211_pmsr_report(wdev->wiphy, wdev, req->cookie, + result->addr); + + /* + * Currently, only variable items are LCI and civic location, + * both of which are reasonably short so we don't need to + * worry about them here for the allocation. + */ + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PEER_MEASUREMENT_RESULT); + if (!hdr) + goto free; + + if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || + nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), + NL80211_ATTR_PAD)) + goto free; + + if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->cookie, + NL80211_ATTR_PAD)) + goto free; + + err = nl80211_pmsr_send_result(msg, result); + if (err) { + pr_err_ratelimited("peer measurement result: message didn't fit!"); + goto free; + } + + genlmsg_end(msg, hdr); + genlmsg_unicast(wiphy_net(wdev->wiphy), msg, req->nl_portid); + return; +free: + nlmsg_free(msg); +} +EXPORT_SYMBOL_GPL(cfg80211_pmsr_report); + +static void cfg80211_pmsr_process_abort(struct wireless_dev *wdev) +{ + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); + struct cfg80211_pmsr_request *req, *tmp; + LIST_HEAD(free_list); + + lockdep_assert_held(&wdev->mtx); + + spin_lock_bh(&wdev->pmsr_lock); + list_for_each_entry_safe(req, tmp, &wdev->pmsr_list, list) { + if (req->nl_portid) + continue; + list_move_tail(&req->list, &free_list); + } + spin_unlock_bh(&wdev->pmsr_lock); + + list_for_each_entry_safe(req, tmp, &free_list, list) { + rdev_abort_pmsr(rdev, wdev, req); + + kfree(req); + } +} + +void cfg80211_pmsr_free_wk(struct work_struct *work) +{ + struct wireless_dev *wdev = container_of(work, struct wireless_dev, + pmsr_free_wk); + + wdev_lock(wdev); + cfg80211_pmsr_process_abort(wdev); + wdev_unlock(wdev); +} + +void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev) +{ + struct cfg80211_pmsr_request *req; + bool found = false; + + spin_lock_bh(&wdev->pmsr_lock); + list_for_each_entry(req, &wdev->pmsr_list, list) { + found = true; + req->nl_portid = 0; + } + spin_unlock_bh(&wdev->pmsr_lock); + + if (found) + cfg80211_pmsr_process_abort(wdev); + + WARN_ON(!list_empty(&wdev->pmsr_list)); +} + +void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid) +{ + struct cfg80211_pmsr_request *req; + + spin_lock_bh(&wdev->pmsr_lock); + list_for_each_entry(req, &wdev->pmsr_list, list) { + if (req->nl_portid == portid) { + req->nl_portid = 0; + schedule_work(&wdev->pmsr_free_wk); + } + } + spin_unlock_bh(&wdev->pmsr_lock); +} |