summaryrefslogtreecommitdiffstats
path: root/net/wireless/pmsr.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/wireless/pmsr.c')
-rw-r--r--net/wireless/pmsr.c643
1 files changed, 643 insertions, 0 deletions
diff --git a/net/wireless/pmsr.c b/net/wireless/pmsr.c
new file mode 100644
index 000000000..a817d8e3e
--- /dev/null
+++ b/net/wireless/pmsr.c
@@ -0,0 +1,643 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 - 2019 Intel Corporation
+ */
+#ifndef __PMSR_H
+#define __PMSR_H
+#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;
+ }
+
+ 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);
+}
+
+#endif /* __PMSR_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 03:31:54 +0000