cregit-Linux how code gets into the kernel

Release 4.15 net/wireless/mlme.c

Directory: net/wireless
// SPDX-License-Identifier: GPL-2.0
/*
 * cfg80211 MLME SAP interface
 *
 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
 * Copyright (c) 2015           Intel Deutschland GmbH
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/etherdevice.h>
#include <linux/netdevice.h>
#include <linux/nl80211.h>
#include <linux/slab.h>
#include <linux/wireless.h>
#include <net/cfg80211.h>
#include <net/iw_handler.h>
#include "core.h"
#include "nl80211.h"
#include "rdev-ops.h"



void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss, const u8 *buf, size_t len, int uapsd_queues) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; struct cfg80211_connect_resp_params cr; memset(&cr, 0, sizeof(cr)); cr.status = (int)le16_to_cpu(mgmt->u.assoc_resp.status_code); cr.bssid = mgmt->bssid; cr.bss = bss; cr.resp_ie = mgmt->u.assoc_resp.variable; cr.resp_ie_len = len - offsetof(struct ieee80211_mgmt, u.assoc_resp.variable); cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED; trace_cfg80211_send_rx_assoc(dev, bss); /* * This is a bit of a hack, we don't notify userspace of * a (re-)association reply if we tried to send a reassoc * and got a reject -- we only try again with an assoc * frame instead of reassoc. */ if (cfg80211_sme_rx_assoc_resp(wdev, cr.status)) { cfg80211_unhold_bss(bss_from_pub(bss)); cfg80211_put_bss(wiphy, bss); return; } nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL, uapsd_queues); /* update current_bss etc., consumes the bss reference */ __cfg80211_connect_result(dev, &cr, cr.status == WLAN_STATUS_SUCCESS); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg9242.20%1275.00%
Vidyullatha Kanchanapally7433.94%16.25%
Jouni Malinen4621.10%16.25%
Eliad Peller52.29%16.25%
Zhao, Gang10.46%16.25%
Total218100.00%16100.00%

EXPORT_SYMBOL(cfg80211_rx_assoc_resp);
static void cfg80211_process_auth(struct wireless_dev *wdev, const u8 *buf, size_t len) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL); cfg80211_sme_rx_auth(wdev, buf, len); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg3665.45%360.00%
Jouni Malinen1832.73%120.00%
Zhao, Gang11.82%120.00%
Total55100.00%5100.00%


static void cfg80211_process_deauth(struct wireless_dev *wdev, const u8 *buf, size_t len) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; const u8 *bssid = mgmt->bssid; u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL); if (!wdev->current_bss || !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) return; __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); cfg80211_sme_deauth(wdev); }

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PersonTokensPropCommitsCommitProp
Johannes Berg12891.43%770.00%
Jouni Malinen96.43%110.00%
Joe Perches21.43%110.00%
Zhao, Gang10.71%110.00%
Total140100.00%10100.00%


static void cfg80211_process_disassoc(struct wireless_dev *wdev, const u8 *buf, size_t len) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; const u8 *bssid = mgmt->bssid; u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL); if (WARN_ON(!wdev->current_bss || !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) return; __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); cfg80211_sme_disassoc(wdev); }

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PersonTokensPropCommitsCommitProp
Johannes Berg9868.53%753.85%
Jouni Malinen3927.27%323.08%
Pavel Roskin42.80%17.69%
Zhao, Gang10.70%17.69%
Joe Perches10.70%17.69%
Total143100.00%13100.00%


void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct ieee80211_mgmt *mgmt = (void *)buf; ASSERT_WDEV_LOCK(wdev); trace_cfg80211_rx_mlme_mgmt(dev, buf, len); if (WARN_ON(len < 2)) return; if (ieee80211_is_auth(mgmt->frame_control)) cfg80211_process_auth(wdev, buf, len); else if (ieee80211_is_deauth(mgmt->frame_control)) cfg80211_process_deauth(wdev, buf, len); else if (ieee80211_is_disassoc(mgmt->frame_control)) cfg80211_process_disassoc(wdev, buf, len); }

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PersonTokensPropCommitsCommitProp
Johannes Berg118100.00%2100.00%
Total118100.00%2100.00%

EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt);
void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); trace_cfg80211_send_auth_timeout(dev, addr); nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL); cfg80211_sme_auth_timeout(wdev); }

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PersonTokensPropCommitsCommitProp
Johannes Berg5887.88%466.67%
Beni Lev710.61%116.67%
Zhao, Gang11.52%116.67%
Total66100.00%6100.00%

EXPORT_SYMBOL(cfg80211_auth_timeout);
void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); trace_cfg80211_send_assoc_timeout(dev, bss->bssid); nl80211_send_assoc_timeout(rdev, dev, bss->bssid, GFP_KERNEL); cfg80211_sme_assoc_timeout(wdev); cfg80211_unhold_bss(bss_from_pub(bss)); cfg80211_put_bss(wiphy, bss); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg5564.71%770.00%
Jouni Malinen2327.06%110.00%
Beni Lev67.06%110.00%
Zhao, Gang11.18%110.00%
Total85100.00%10100.00%

EXPORT_SYMBOL(cfg80211_assoc_timeout);
void cfg80211_abandon_assoc(struct net_device *dev, struct cfg80211_bss *bss) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; cfg80211_sme_abandon_assoc(wdev); cfg80211_unhold_bss(bss_from_pub(bss)); cfg80211_put_bss(wiphy, bss); }

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PersonTokensPropCommitsCommitProp
Johannes Berg53100.00%1100.00%
Total53100.00%1100.00%

EXPORT_SYMBOL(cfg80211_abandon_assoc);
void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct ieee80211_mgmt *mgmt = (void *)buf; ASSERT_WDEV_LOCK(wdev); trace_cfg80211_tx_mlme_mgmt(dev, buf, len); if (WARN_ON(len < 2)) return; if (ieee80211_is_deauth(mgmt->frame_control)) cfg80211_process_deauth(wdev, buf, len); else cfg80211_process_disassoc(wdev, buf, len); }

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PersonTokensPropCommitsCommitProp
Johannes Berg90100.00%2100.00%
Total90100.00%2100.00%

EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt);
void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, enum nl80211_key_type key_type, int key_id, const u8 *tsc, gfp_t gfp) { struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); #ifdef CONFIG_CFG80211_WEXT union iwreq_data wrqu; char *buf = kmalloc(128, gfp); if (buf) { sprintf(buf, "MLME-MICHAELMICFAILURE.indication(" "keyid=%d %scast addr=%pM)", key_id, key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni", addr); memset(&wrqu, 0, sizeof(wrqu)); wrqu.data.length = strlen(buf); wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); kfree(buf); } #endif trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc); nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp); }

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PersonTokensPropCommitsCommitProp
Johannes Berg9254.76%350.00%
Jouni Malinen6236.90%116.67%
Beni Lev137.74%116.67%
Zhao, Gang10.60%116.67%
Total168100.00%6100.00%

EXPORT_SYMBOL(cfg80211_michael_mic_failure); /* some MLME handling for userspace SME */
int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, struct net_device *dev, struct ieee80211_channel *chan, enum nl80211_auth_type auth_type, const u8 *bssid, const u8 *ssid, int ssid_len, const u8 *ie, int ie_len, const u8 *key, int key_len, int key_idx, const u8 *auth_data, int auth_data_len) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_auth_request req = { .ie = ie, .ie_len = ie_len, .auth_data = auth_data, .auth_data_len = auth_data_len, .auth_type = auth_type, .key = key, .key_len = key_len, .key_idx = key_idx, }; int err; ASSERT_WDEV_LOCK(wdev); if (auth_type == NL80211_AUTHTYPE_SHARED_KEY) if (!key || !key_len || key_idx < 0 || key_idx > 3) return -EINVAL; if (wdev->current_bss && ether_addr_equal(bssid, wdev->current_bss->pub.bssid)) return -EALREADY; req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, IEEE80211_BSS_TYPE_ESS, IEEE80211_PRIVACY_ANY); if (!req.bss) return -ENOENT; err = rdev_auth(rdev, dev, &req); cfg80211_put_bss(&rdev->wiphy, req.bss); return err; }

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PersonTokensPropCommitsCommitProp
Johannes Berg22293.28%964.29%
Jouni Malinen125.04%214.29%
Dedy Lansky20.84%17.14%
Hila Gonen10.42%17.14%
Joe Perches10.42%17.14%
Total238100.00%14100.00%

/* Do a logical ht_capa &= ht_capa_mask. */
void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa, const struct ieee80211_ht_cap *ht_capa_mask) { int i; u8 *p1, *p2; if (!ht_capa_mask) { memset(ht_capa, 0, sizeof(*ht_capa)); return; } p1 = (u8*)(ht_capa); p2 = (u8*)(ht_capa_mask); for (i = 0; i<sizeof(*ht_capa); i++) p1[i] &= p2[i]; }

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PersonTokensPropCommitsCommitProp
Ben Greear94100.00%1100.00%
Total94100.00%1100.00%

/* Do a logical ht_capa &= ht_capa_mask. */
void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa, const struct ieee80211_vht_cap *vht_capa_mask) { int i; u8 *p1, *p2; if (!vht_capa_mask) { memset(vht_capa, 0, sizeof(*vht_capa)); return; } p1 = (u8*)(vht_capa); p2 = (u8*)(vht_capa_mask); for (i = 0; i < sizeof(*vht_capa); i++) p1[i] &= p2[i]; }

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PersonTokensPropCommitsCommitProp
Johannes Berg94100.00%1100.00%
Total94100.00%1100.00%


int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, struct net_device *dev, struct ieee80211_channel *chan, const u8 *bssid, const u8 *ssid, int ssid_len, struct cfg80211_assoc_request *req) { struct wireless_dev *wdev = dev->ieee80211_ptr; int err; ASSERT_WDEV_LOCK(wdev); if (wdev->current_bss && (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid, req->prev_bssid))) return -EALREADY; cfg80211_oper_and_ht_capa(&req->ht_capa_mask, rdev->wiphy.ht_capa_mod_mask); cfg80211_oper_and_vht_capa(&req->vht_capa_mask, rdev->wiphy.vht_capa_mod_mask); req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, IEEE80211_BSS_TYPE_ESS, IEEE80211_PRIVACY_ANY); if (!req->bss) return -ENOENT; err = rdev_assoc(rdev, dev, req); if (!err) cfg80211_hold_bss(bss_from_pub(req->bss)); else cfg80211_put_bss(&rdev->wiphy, req->bss); return err; }

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PersonTokensPropCommitsCommitProp
Johannes Berg16082.90%857.14%
Ben Greear157.77%17.14%
Jouni Malinen136.74%17.14%
Dedy Lansky21.04%17.14%
Luciano Coelho10.52%17.14%
Hila Gonen10.52%17.14%
Joe Perches10.52%17.14%
Total193100.00%14100.00%


int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, struct net_device *dev, const u8 *bssid, const u8 *ie, int ie_len, u16 reason, bool local_state_change) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_deauth_request req = { .bssid = bssid, .reason_code = reason, .ie = ie, .ie_len = ie_len, .local_state_change = local_state_change, }; ASSERT_WDEV_LOCK(wdev); if (local_state_change && (!wdev->current_bss || !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) return 0; if (ether_addr_equal(wdev->disconnect_bssid, bssid) || (wdev->current_bss && ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) wdev->conn_owner_nlportid = 0; return rdev_deauth(rdev, dev, &req); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg10064.94%444.44%
Andrzej Zaborowski3623.38%111.11%
Stanislaw Gruszka117.14%111.11%
Jouni Malinen53.25%111.11%
Hila Gonen10.65%111.11%
Joe Perches10.65%111.11%
Total154100.00%9100.00%


int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, struct net_device *dev, const u8 *bssid, const u8 *ie, int ie_len, u16 reason, bool local_state_change) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_disassoc_request req = { .reason_code = reason, .local_state_change = local_state_change, .ie = ie, .ie_len = ie_len, }; int err; ASSERT_WDEV_LOCK(wdev); if (!wdev->current_bss) return -ENOTCONN; if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) req.bss = &wdev->current_bss->pub; else return -ENOTCONN; err = rdev_disassoc(rdev, dev, &req); if (err) return err; /* driver should have reported the disassoc */ WARN_ON(wdev->current_bss); return 0; }

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PersonTokensPropCommitsCommitProp
Johannes Berg14496.64%666.67%
Jouni Malinen32.01%111.11%
Hila Gonen10.67%111.11%
Joe Perches10.67%111.11%
Total149100.00%9100.00%


void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, struct net_device *dev) { struct wireless_dev *wdev = dev->ieee80211_ptr; u8 bssid[ETH_ALEN]; ASSERT_WDEV_LOCK(wdev); if (!rdev->ops->deauth) return; if (!wdev->current_bss) return; memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN); cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, WLAN_REASON_DEAUTH_LEAVING, false); }

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PersonTokensPropCommitsCommitProp
Johannes Berg85100.00%5100.00%
Total85100.00%5100.00%

struct cfg80211_mgmt_registration { struct list_head list; struct wireless_dev *wdev; u32 nlportid; int match_len; __le16 frame_type; u8 match[]; };
static void cfg80211_process_mlme_unregistrations(struct cfg80211_registered_device *rdev) { struct cfg80211_mgmt_registration *reg; ASSERT_RTNL(); spin_lock_bh(&rdev->mlme_unreg_lock); while ((reg = list_first_entry_or_null(&rdev->mlme_unreg, struct cfg80211_mgmt_registration, list))) { list_del(&reg->list); spin_unlock_bh(&rdev->mlme_unreg_lock); if (rdev->ops->mgmt_frame_register) { u16 frame_type = le16_to_cpu(reg->frame_type); rdev_mgmt_frame_register(rdev, reg->wdev, frame_type, false); } kfree(reg); spin_lock_bh(&rdev->mlme_unreg_lock); } spin_unlock_bh(&rdev->mlme_unreg_lock); }

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PersonTokensPropCommitsCommitProp
Johannes Berg118100.00%1100.00%
Total118100.00%1100.00%


void cfg80211_mlme_unreg_wk(struct work_struct *wk) { struct cfg80211_registered_device *rdev; rdev = container_of(wk, struct cfg80211_registered_device, mlme_unreg_wk); rtnl_lock(); cfg80211_process_mlme_unregistrations(rdev); rtnl_unlock(); }

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PersonTokensPropCommitsCommitProp
Johannes Berg38100.00%1100.00%
Total38100.00%1100.00%


int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid, u16 frame_type, const u8 *match_data, int match_len) { struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_mgmt_registration *reg, *nreg; int err = 0; u16 mgmt_type; if (!wdev->wiphy->mgmt_stypes) return -EOPNOTSUPP; if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) return -EINVAL; if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) return -EINVAL; mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4; if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) return -EINVAL; nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL); if (!nreg) return -ENOMEM; spin_lock_bh(&wdev->mgmt_registrations_lock); list_for_each_entry(reg, &wdev->mgmt_registrations, list) { int mlen = min(match_len, reg->match_len); if (frame_type != le16_to_cpu(reg->frame_type)) continue; if (memcmp(reg->match, match_data, mlen) == 0) { err = -EALREADY; break; } } if (err) { kfree(nreg); goto out; } memcpy(nreg->match, match_data, match_len); nreg->match_len = match_len; nreg->nlportid = snd_portid; nreg->frame_type = cpu_to_le16(frame_type); nreg->wdev = wdev; list_add(&nreg->list, &wdev->mgmt_registrations); spin_unlock_bh(&wdev->mgmt_registrations_lock); /* process all unregistrations to avoid driver confusion */ cfg80211_process_mlme_unregistrations(rdev); if (rdev->ops->mgmt_frame_register) rdev_mgmt_frame_register(rdev, wdev, frame_type, true); return 0; out: spin_unlock_bh(&wdev->mgmt_registrations_lock); return err; }

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PersonTokensPropCommitsCommitProp
Johannes Berg25675.07%457.14%
Jouni Malinen8424.63%228.57%
Zhao, Gang10.29%114.29%
Total341100.00%7100.00%


void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid) { struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_mgmt_registration *reg, *tmp; spin_lock_bh(&wdev->mgmt_registrations_lock); list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { if (reg->nlportid != nlportid) continue; list_del(&reg->list); spin_lock(&rdev->mlme_unreg_lock); list_add_tail(&reg->list, &rdev->mlme_unreg); spin_unlock(&rdev->mlme_unreg_lock); schedule_work(&rdev->mlme_unreg_wk); } spin_unlock_bh(&wdev->mgmt_registrations_lock); if (nlportid && rdev->crit_proto_nlportid == nlportid) { rdev->crit_proto_nlportid = 0; rdev_crit_proto_stop(rdev, wdev); } if (nlportid == wdev->ap_unexpected_nlportid) wdev->ap_unexpected_nlportid = 0; }

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PersonTokensPropCommitsCommitProp
Johannes Berg9760.25%342.86%
Jouni Malinen3421.12%114.29%
Arend Van Spriel2515.53%114.29%
Beni Lev42.48%114.29%
Zhao, Gang10.62%114.29%
Total161100.00%7100.00%


void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); spin_lock_bh(&wdev->mgmt_registrations_lock); spin_lock(&rdev->mlme_unreg_lock); list_splice_tail_init(&wdev->mgmt_registrations, &rdev->mlme_unreg); spin_unlock(&rdev->mlme_unreg_lock); spin_unlock_bh(&wdev->mgmt_registrations_lock); cfg80211_process_mlme_unregistrations(rdev); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg5475.00%250.00%
Juuso Oikarinen1520.83%125.00%
Beni Lev34.17%125.00%
Total72100.00%4100.00%


int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, struct cfg80211_mgmt_tx_params *params, u64 *cookie) { const struct ieee80211_mgmt *mgmt; u16 stype; if (!wdev->wiphy->mgmt_stypes) return -EOPNOTSUPP; if (!rdev->ops->mgmt_tx) return -EOPNOTSUPP; if (params->len < 24 + 1) return -EINVAL; mgmt = (const struct ieee80211_mgmt *)params->buf; if (!ieee80211_is_mgmt(mgmt->frame_control)) return -EINVAL; stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4))) return -EINVAL; if (ieee80211_is_action(mgmt->frame_control) && mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { int err = 0; wdev_lock(wdev); switch (wdev->iftype) { case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_P2P_CLIENT: if (!wdev->current_bss) { err = -ENOTCONN; break; } if (!ether_addr_equal(wdev->current_bss->pub.bssid, mgmt->bssid)) { err = -ENOTCONN; break; } /* * check for IBSS DA must be done by driver as * cfg80211 doesn't track the stations */ if (wdev->iftype == NL80211_IFTYPE_ADHOC) break; /* for station, check that DA is the AP */ if (!ether_addr_equal(wdev->current_bss->pub.bssid, mgmt->da)) { err = -ENOTCONN; break; } break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_AP_VLAN: if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev))) err = -EINVAL; break; case NL80211_IFTYPE_MESH_POINT: if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) { err = -EINVAL; break; } /* * check for mesh DA must be done by driver as * cfg80211 doesn't track the stations */ break; case NL80211_IFTYPE_P2P_DEVICE: /* * fall through, P2P device only supports * public action frames */ case NL80211_IFTYPE_NAN: default: err = -EOPNOTSUPP; break; } wdev_unlock(wdev); if (err) return err; } if (!ether_addr_equal(mgmt->sa, wdev_address(wdev))) { /* Allow random TA to be used with Public Action frames if the * driver has indicated support for this. Otherwise, only allow * the local address to be used. */ if (!ieee80211_is_action(mgmt->frame_control) || mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) return -EINVAL; if (!wdev->current_bss && !wiphy_ext_feature_isset( &rdev->wiphy, NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA)) return -EINVAL; if (wdev->current_bss && !wiphy_ext_feature_isset( &rdev->wiphy, NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA_CONNECTED)) return -EINVAL; } /* Transmit the Action frame as requested by user space */ return rdev_mgmt_tx(rdev, wdev, params, cookie); }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg35579.42%337.50%
Vamsi Krishna6614.77%112.50%
Thomas Pedersen112.46%112.50%
Andrei Otcheretianski71.57%112.50%
Beni Lev51.12%112.50%
Ayala Beker30.67%112.50%
Total447100.00%8100.00%


bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_mbm, const u8 *buf, size_t len, u32 flags) { struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_mgmt_registration *reg; const struct ieee80211_txrx_stypes *stypes = &wiphy->mgmt_stypes[wdev->iftype]; struct ieee80211_mgmt *mgmt = (void *)buf; const u8 *data; int data_len; bool result = false; __le16 ftype = mgmt->frame_control & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE); u16 stype; trace_cfg80211_rx_mgmt(wdev, freq, sig_mbm); stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4; if (!(stypes->rx & BIT(stype))) { trace_cfg80211_return_bool(false); return false; } data = buf + ieee80211_hdrlen(mgmt->frame_control); data_len = len - ieee80211_hdrlen(mgmt->frame_control); spin_lock_bh(&wdev->mgmt_registrations_lock); list_for_each_entry(reg, &wdev->mgmt_registrations, list) { if (reg->frame_type != ftype) continue; if (reg->match_len > data_len) continue; if (memcmp(reg->match, data, reg->match_len)) continue; /* found match! */ /* Indicate the received Action frame to user space */ if (nl80211_send_mgmt(rdev, wdev, reg->nlportid, freq, sig_mbm, buf, len, flags, GFP_ATOMIC)) continue; result = true; break; } spin_unlock_bh(&wdev->mgmt_registrations_lock); trace_cfg80211_return_bool(result); return result; }

Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg22781.36%116.67%
Jouni Malinen4114.70%116.67%
Vladimir Kondratiev51.79%233.33%
Beni Lev51.79%116.67%
Zhao, Gang10.36%116.67%
Total279100.00%6100.00%

EXPORT_SYMBOL(cfg80211_rx_mgmt);
void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev) { cancel_delayed_work(&rdev->dfs_update_channels_wk); queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, 0); }

Contributors

PersonTokensPropCommitsCommitProp
Vasanthakumar Thiagarajan30100.00%1100.00%
Total30100.00%1100.00%


void cfg80211_dfs_channels_update_work(struct work_struct *work) { struct delayed_work *delayed_work = to_delayed_work(work); struct cfg80211_registered_device *rdev; struct cfg80211_chan_def chandef; struct ieee80211_supported_band *sband; struct ieee80211_channel *c; struct wiphy *wiphy; bool check_again = false; unsigned long timeout, next_time = 0; unsigned long time_dfs_update; enum nl80211_radar_event radar_event; int bandid, i; rdev = container_of(delayed_work, struct cfg80211_registered_device, dfs_update_channels_wk); wiphy = &rdev->wiphy; rtnl_lock(); for (bandid = 0; bandid < NUM_NL80211_BANDS; bandid++) { sband = wiphy->bands[bandid]; if (!sband) continue; for (i = 0; i < sband->n_channels; i++) { c = &sband->channels[i]; if (!(c->flags & IEEE80211_CHAN_RADAR)) continue; if (c->dfs_state != NL80211_DFS_UNAVAILABLE && c->dfs_state != NL80211_DFS_AVAILABLE) continue; if (c->dfs_state == NL80211_DFS_UNAVAILABLE) { time_dfs_update = IEEE80211_DFS_MIN_NOP_TIME_MS; radar_event = NL80211_RADAR_NOP_FINISHED; } else { if (regulatory_pre_cac_allowed(wiphy) || cfg80211_any_wiphy_oper_chan(wiphy, c)) continue; time_dfs_update = REG_PRE_CAC_EXPIRY_GRACE_MS; radar_event = NL80211_RADAR_PRE_CAC_EXPIRED; } timeout = c->dfs_state_entered + msecs_to_jiffies(time_dfs_update); if (time_after_eq(jiffies, timeout)) { c->dfs_state = NL80211_DFS_USABLE; c->dfs_state_entered = jiffies; cfg80211_chandef_create(&chandef, c, NL80211_CHAN_NO_HT); nl80211_radar_notify(rdev, &chandef, radar_event, NULL, GFP_ATOMIC); regulatory_propagate_dfs_state(wiphy, &chandef, c->dfs_state, radar_event); continue; } if (!check_again) next_time = timeout - jiffies; else next_time = min(next_time, timeout - jiffies); check_again = true; } } rtnl_unlock(); /* reschedule if there are other channels waiting to be cleared again */ if (check_again) queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, next_time); }

Contributors

PersonTokensPropCommitsCommitProp
Simon Wunderlich23569.12%112.50%
Vasanthakumar Thiagarajan8625.29%225.00%
Michal Kazior92.65%225.00%
Johannes Berg51.47%225.00%
Geliang Tang51.47%112.50%
Total340100.00%8100.00%


void cfg80211_radar_event(struct wiphy *wiphy, struct cfg80211_chan_def *chandef, gfp_t gfp) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); trace_cfg80211_radar_event(wiphy, chandef); /* only set the chandef supplied channel to unavailable, in * case the radar is detected on only one of multiple channels * spanned by the chandef. */ cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE); cfg80211_sched_dfs_chan_update(rdev); nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp); memcpy(&rdev->radar_chandef, chandef, sizeof(struct cfg80211_chan_def)); queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk); }

Contributors

PersonTokensPropCommitsCommitProp
Simon Wunderlich6168.54%125.00%
Vasanthakumar Thiagarajan2730.34%250.00%
Zhao, Gang11.12%125.00%
Total89100.00%4100.00%

EXPORT_SYMBOL(cfg80211_radar_event);
void cfg80211_cac_event(struct net_device *netdev, const struct cfg80211_chan_def *chandef, enum nl80211_radar_event event, gfp_t gfp) { struct wireless_dev *wdev = netdev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); unsigned long timeout; trace_cfg80211_cac_event(netdev, event); if (WARN_ON(!wdev->cac_started)) return; if (WARN_ON(!wdev->chandef.chan)) return; switch (event) { case NL80211_RADAR_CAC_FINISHED: timeout = wdev->cac_start_time + msecs_to_jiffies(wdev->cac_time_ms); WARN_ON(!time_after_eq(jiffies, timeout)); cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE); memcpy(&rdev->cac_done_chandef, chandef, sizeof(struct cfg80211_chan_def)); queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk); cfg80211_sched_dfs_chan_update(rdev); break; case NL80211_RADAR_CAC_ABORTED: break; default: WARN_ON(1); return; } wdev->cac_started = false; nl80211_radar_notify(rdev, chandef, event, netdev, gfp); }

Contributors

PersonTokensPropCommitsCommitProp
Simon Wunderlich14676.84%114.29%
Vasanthakumar Thiagarajan3116.32%228.57%
Janusz Dziedzic94.74%228.57%
Michal Kazior31.58%114.29%
Zhao, Gang10.53%114.29%
Total190100.00%7100.00%

EXPORT_SYMBOL(cfg80211_cac_event);

Overall Contributors

PersonTokensPropCommitsCommitProp
Johannes Berg282964.80%3746.25%
Simon Wunderlich45210.35%11.25%
Jouni Malinen4329.89%1113.75%
Vasanthakumar Thiagarajan1743.99%22.50%
Ben Greear1102.52%11.25%
Vidyullatha Kanchanapally741.69%11.25%
Vamsi Krishna661.51%11.25%
Beni Lev430.98%11.25%
Andrzej Zaborowski360.82%11.25%
Arend Van Spriel250.57%11.25%
Juuso Oikarinen150.34%11.25%
Zhao, Gang120.27%11.25%
Michal Kazior120.27%33.75%
Stanislaw Gruszka110.25%11.25%
Thomas Pedersen110.25%11.25%
Janusz Dziedzic90.21%22.50%
Joe Perches70.16%11.25%
Andrei Otcheretianski70.16%11.25%
Hila Gonen70.16%11.25%
Vladimir Kondratiev50.11%22.50%
Geliang Tang50.11%11.25%
Eliad Peller50.11%11.25%
Dedy Lansky40.09%11.25%
Pavel Roskin40.09%11.25%
Tejun Heo30.07%11.25%
Felix Fietkau30.07%11.25%
Ayala Beker30.07%11.25%
Greg Kroah-Hartman10.02%11.25%
Luciano Coelho10.02%11.25%
Total4366100.00%80100.00%
Directory: net/wireless
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