X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=net%2Fwireless%2Fscan.c;h=0798c62e60858cb81d1df3d4829414665808268b;hb=fb54918af7e7a607af8b70ba052a35ff8acb8620;hp=88f108edfb586ef3b2d17d15cf66b00da84f93f0;hpb=f8647b506d7116a1a3accd8d618184096e85f50b;p=mirror_ubuntu-bionic-kernel.git diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 88f108edfb58..0798c62e6085 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -81,10 +81,10 @@ static void bss_free(struct cfg80211_internal_bss *bss) kfree(bss); } -static inline void bss_ref_get(struct cfg80211_registered_device *dev, +static inline void bss_ref_get(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *bss) { - lockdep_assert_held(&dev->bss_lock); + lockdep_assert_held(&rdev->bss_lock); bss->refcount++; if (bss->pub.hidden_beacon_bss) { @@ -95,10 +95,10 @@ static inline void bss_ref_get(struct cfg80211_registered_device *dev, } } -static inline void bss_ref_put(struct cfg80211_registered_device *dev, +static inline void bss_ref_put(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *bss) { - lockdep_assert_held(&dev->bss_lock); + lockdep_assert_held(&rdev->bss_lock); if (bss->pub.hidden_beacon_bss) { struct cfg80211_internal_bss *hbss; @@ -114,10 +114,10 @@ static inline void bss_ref_put(struct cfg80211_registered_device *dev, bss_free(bss); } -static bool __cfg80211_unlink_bss(struct cfg80211_registered_device *dev, +static bool __cfg80211_unlink_bss(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *bss) { - lockdep_assert_held(&dev->bss_lock); + lockdep_assert_held(&rdev->bss_lock); if (!list_empty(&bss->hidden_list)) { /* @@ -134,31 +134,31 @@ static bool __cfg80211_unlink_bss(struct cfg80211_registered_device *dev, } list_del_init(&bss->list); - rb_erase(&bss->rbn, &dev->bss_tree); - bss_ref_put(dev, bss); + rb_erase(&bss->rbn, &rdev->bss_tree); + bss_ref_put(rdev, bss); return true; } -static void __cfg80211_bss_expire(struct cfg80211_registered_device *dev, +static void __cfg80211_bss_expire(struct cfg80211_registered_device *rdev, unsigned long expire_time) { struct cfg80211_internal_bss *bss, *tmp; bool expired = false; - lockdep_assert_held(&dev->bss_lock); + lockdep_assert_held(&rdev->bss_lock); - list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) { + list_for_each_entry_safe(bss, tmp, &rdev->bss_list, list) { if (atomic_read(&bss->hold)) continue; if (!time_after(expire_time, bss->ts)) continue; - if (__cfg80211_unlink_bss(dev, bss)) + if (__cfg80211_unlink_bss(rdev, bss)) expired = true; } if (expired) - dev->bss_generation++; + rdev->bss_generation++; } void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, @@ -238,11 +238,11 @@ void __cfg80211_scan_done(struct work_struct *wk) void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted) { trace_cfg80211_scan_done(request, aborted); - WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req); + WARN_ON(request != wiphy_to_rdev(request->wiphy)->scan_req); request->aborted = aborted; request->notified = true; - queue_work(cfg80211_wq, &wiphy_to_dev(request->wiphy)->scan_done_wk); + queue_work(cfg80211_wq, &wiphy_to_rdev(request->wiphy)->scan_done_wk); } EXPORT_SYMBOL(cfg80211_scan_done); @@ -278,15 +278,15 @@ void cfg80211_sched_scan_results(struct wiphy *wiphy) { trace_cfg80211_sched_scan_results(wiphy); /* ignore if we're not scanning */ - if (wiphy_to_dev(wiphy)->sched_scan_req) + if (wiphy_to_rdev(wiphy)->sched_scan_req) queue_work(cfg80211_wq, - &wiphy_to_dev(wiphy)->sched_scan_results_wk); + &wiphy_to_rdev(wiphy)->sched_scan_results_wk); } EXPORT_SYMBOL(cfg80211_sched_scan_results); void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy) { - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); ASSERT_RTNL(); @@ -330,21 +330,21 @@ int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev, return 0; } -void cfg80211_bss_age(struct cfg80211_registered_device *dev, +void cfg80211_bss_age(struct cfg80211_registered_device *rdev, unsigned long age_secs) { struct cfg80211_internal_bss *bss; unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC); - spin_lock_bh(&dev->bss_lock); - list_for_each_entry(bss, &dev->bss_list, list) + spin_lock_bh(&rdev->bss_lock); + list_for_each_entry(bss, &rdev->bss_list, list) bss->ts -= age_jiffies; - spin_unlock_bh(&dev->bss_lock); + spin_unlock_bh(&rdev->bss_lock); } -void cfg80211_bss_expire(struct cfg80211_registered_device *dev) +void cfg80211_bss_expire(struct cfg80211_registered_device *rdev) { - __cfg80211_bss_expire(dev, jiffies - IEEE80211_SCAN_RESULT_EXPIRE); + __cfg80211_bss_expire(rdev, jiffies - IEEE80211_SCAN_RESULT_EXPIRE); } const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len) @@ -534,32 +534,34 @@ struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, const u8 *ssid, size_t ssid_len, u16 capa_mask, u16 capa_val) { - struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_internal_bss *bss, *res = NULL; unsigned long now = jiffies; trace_cfg80211_get_bss(wiphy, channel, bssid, ssid, ssid_len, capa_mask, capa_val); - spin_lock_bh(&dev->bss_lock); + spin_lock_bh(&rdev->bss_lock); - list_for_each_entry(bss, &dev->bss_list, list) { + list_for_each_entry(bss, &rdev->bss_list, list) { if ((bss->pub.capability & capa_mask) != capa_val) continue; if (channel && bss->pub.channel != channel) continue; + if (!is_valid_ether_addr(bss->pub.bssid)) + continue; /* Don't get expired BSS structs */ if (time_after(now, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE) && !atomic_read(&bss->hold)) continue; if (is_bss(&bss->pub, bssid, ssid, ssid_len)) { res = bss; - bss_ref_get(dev, res); + bss_ref_get(rdev, res); break; } } - spin_unlock_bh(&dev->bss_lock); + spin_unlock_bh(&rdev->bss_lock); if (!res) return NULL; trace_cfg80211_return_bss(&res->pub); @@ -567,10 +569,10 @@ struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, } EXPORT_SYMBOL(cfg80211_get_bss); -static void rb_insert_bss(struct cfg80211_registered_device *dev, +static void rb_insert_bss(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *bss) { - struct rb_node **p = &dev->bss_tree.rb_node; + struct rb_node **p = &rdev->bss_tree.rb_node; struct rb_node *parent = NULL; struct cfg80211_internal_bss *tbss; int cmp; @@ -593,15 +595,15 @@ static void rb_insert_bss(struct cfg80211_registered_device *dev, } rb_link_node(&bss->rbn, parent, p); - rb_insert_color(&bss->rbn, &dev->bss_tree); + rb_insert_color(&bss->rbn, &rdev->bss_tree); } static struct cfg80211_internal_bss * -rb_find_bss(struct cfg80211_registered_device *dev, +rb_find_bss(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *res, enum bss_compare_mode mode) { - struct rb_node *n = dev->bss_tree.rb_node; + struct rb_node *n = rdev->bss_tree.rb_node; struct cfg80211_internal_bss *bss; int r; @@ -620,7 +622,7 @@ rb_find_bss(struct cfg80211_registered_device *dev, return NULL; } -static bool cfg80211_combine_bsses(struct cfg80211_registered_device *dev, +static bool cfg80211_combine_bsses(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *new) { const struct cfg80211_bss_ies *ies; @@ -650,7 +652,7 @@ static bool cfg80211_combine_bsses(struct cfg80211_registered_device *dev, /* This is the bad part ... */ - list_for_each_entry(bss, &dev->bss_list, list) { + list_for_each_entry(bss, &rdev->bss_list, list) { if (!ether_addr_equal(bss->pub.bssid, new->pub.bssid)) continue; if (bss->pub.channel != new->pub.channel) @@ -684,7 +686,7 @@ static bool cfg80211_combine_bsses(struct cfg80211_registered_device *dev, /* Returned bss is reference counted and must be cleaned up appropriately. */ static struct cfg80211_internal_bss * -cfg80211_bss_update(struct cfg80211_registered_device *dev, +cfg80211_bss_update(struct cfg80211_registered_device *rdev, struct cfg80211_internal_bss *tmp, bool signal_valid) { @@ -695,14 +697,14 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev, tmp->ts = jiffies; - spin_lock_bh(&dev->bss_lock); + spin_lock_bh(&rdev->bss_lock); if (WARN_ON(!rcu_access_pointer(tmp->pub.ies))) { - spin_unlock_bh(&dev->bss_lock); + spin_unlock_bh(&rdev->bss_lock); return NULL; } - found = rb_find_bss(dev, tmp, BSS_CMP_REGULAR); + found = rb_find_bss(rdev, tmp, BSS_CMP_REGULAR); if (found) { /* Update IEs */ @@ -789,7 +791,7 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev, * is allocated on the stack since it's not needed in the * more common case of an update */ - new = kzalloc(sizeof(*new) + dev->wiphy.bss_priv_size, + new = kzalloc(sizeof(*new) + rdev->wiphy.bss_priv_size, GFP_ATOMIC); if (!new) { ies = (void *)rcu_dereference(tmp->pub.beacon_ies); @@ -805,9 +807,9 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev, INIT_LIST_HEAD(&new->hidden_list); if (rcu_access_pointer(tmp->pub.proberesp_ies)) { - hidden = rb_find_bss(dev, tmp, BSS_CMP_HIDE_ZLEN); + hidden = rb_find_bss(rdev, tmp, BSS_CMP_HIDE_ZLEN); if (!hidden) - hidden = rb_find_bss(dev, tmp, + hidden = rb_find_bss(rdev, tmp, BSS_CMP_HIDE_NUL); if (hidden) { new->pub.hidden_beacon_bss = &hidden->pub; @@ -824,24 +826,24 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev, * expensive search for any probe responses that should * be grouped with this beacon for updates ... */ - if (!cfg80211_combine_bsses(dev, new)) { + if (!cfg80211_combine_bsses(rdev, new)) { kfree(new); goto drop; } } - list_add_tail(&new->list, &dev->bss_list); - rb_insert_bss(dev, new); + list_add_tail(&new->list, &rdev->bss_list); + rb_insert_bss(rdev, new); found = new; } - dev->bss_generation++; - bss_ref_get(dev, found); - spin_unlock_bh(&dev->bss_lock); + rdev->bss_generation++; + bss_ref_get(rdev, found); + spin_unlock_bh(&rdev->bss_lock); return found; drop: - spin_unlock_bh(&dev->bss_lock); + spin_unlock_bh(&rdev->bss_lock); return NULL; } @@ -889,6 +891,7 @@ cfg80211_inform_bss_width(struct wiphy *wiphy, struct cfg80211_bss_ies *ies; struct ieee80211_channel *channel; struct cfg80211_internal_bss tmp = {}, *res; + bool signal_valid; if (WARN_ON(!wiphy)) return NULL; @@ -925,8 +928,9 @@ cfg80211_inform_bss_width(struct wiphy *wiphy, rcu_assign_pointer(tmp.pub.beacon_ies, ies); rcu_assign_pointer(tmp.pub.ies, ies); - res = cfg80211_bss_update(wiphy_to_dev(wiphy), &tmp, - rx_channel == channel); + signal_valid = abs(rx_channel->center_freq - channel->center_freq) <= + wiphy->max_adj_channel_rssi_comp; + res = cfg80211_bss_update(wiphy_to_rdev(wiphy), &tmp, signal_valid); if (!res) return NULL; @@ -950,6 +954,7 @@ cfg80211_inform_bss_width_frame(struct wiphy *wiphy, struct cfg80211_internal_bss tmp = {}, *res; struct cfg80211_bss_ies *ies; struct ieee80211_channel *channel; + bool signal_valid; size_t ielen = len - offsetof(struct ieee80211_mgmt, u.probe_resp.variable); @@ -997,8 +1002,9 @@ cfg80211_inform_bss_width_frame(struct wiphy *wiphy, tmp.pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int); tmp.pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info); - res = cfg80211_bss_update(wiphy_to_dev(wiphy), &tmp, - rx_channel == channel); + signal_valid = abs(rx_channel->center_freq - channel->center_freq) <= + wiphy->max_adj_channel_rssi_comp; + res = cfg80211_bss_update(wiphy_to_rdev(wiphy), &tmp, signal_valid); if (!res) return NULL; @@ -1013,7 +1019,7 @@ EXPORT_SYMBOL(cfg80211_inform_bss_width_frame); void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) { - struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_internal_bss *bss; if (!pub) @@ -1021,15 +1027,15 @@ void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) bss = container_of(pub, struct cfg80211_internal_bss, pub); - spin_lock_bh(&dev->bss_lock); - bss_ref_get(dev, bss); - spin_unlock_bh(&dev->bss_lock); + spin_lock_bh(&rdev->bss_lock); + bss_ref_get(rdev, bss); + spin_unlock_bh(&rdev->bss_lock); } EXPORT_SYMBOL(cfg80211_ref_bss); void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) { - struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_internal_bss *bss; if (!pub) @@ -1037,15 +1043,15 @@ void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) bss = container_of(pub, struct cfg80211_internal_bss, pub); - spin_lock_bh(&dev->bss_lock); - bss_ref_put(dev, bss); - spin_unlock_bh(&dev->bss_lock); + spin_lock_bh(&rdev->bss_lock); + bss_ref_put(rdev, bss); + spin_unlock_bh(&rdev->bss_lock); } EXPORT_SYMBOL(cfg80211_put_bss); void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) { - struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); struct cfg80211_internal_bss *bss; if (WARN_ON(!pub)) @@ -1053,12 +1059,12 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) bss = container_of(pub, struct cfg80211_internal_bss, pub); - spin_lock_bh(&dev->bss_lock); + spin_lock_bh(&rdev->bss_lock); if (!list_empty(&bss->list)) { - if (__cfg80211_unlink_bss(dev, bss)) - dev->bss_generation++; + if (__cfg80211_unlink_bss(rdev, bss)) + rdev->bss_generation++; } - spin_unlock_bh(&dev->bss_lock); + spin_unlock_bh(&rdev->bss_lock); } EXPORT_SYMBOL(cfg80211_unlink_bss); @@ -1075,7 +1081,7 @@ cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) if (!dev) return ERR_PTR(-ENODEV); if (dev->ieee80211_ptr) - rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); + rdev = wiphy_to_rdev(dev->ieee80211_ptr->wiphy); else rdev = ERR_PTR(-ENODEV); dev_put(dev); @@ -1155,7 +1161,11 @@ int cfg80211_wext_siwscan(struct net_device *dev, int k; int wiphy_freq = wiphy->bands[band]->channels[j].center_freq; for (k = 0; k < wreq->num_channels; k++) { - int wext_freq = cfg80211_wext_freq(wiphy, &wreq->channel_list[k]); + struct iw_freq *freq = + &wreq->channel_list[k]; + int wext_freq = + cfg80211_wext_freq(freq); + if (wext_freq == wiphy_freq) goto wext_freq_found; } @@ -1467,7 +1477,7 @@ ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info, } -static int ieee80211_scan_results(struct cfg80211_registered_device *dev, +static int ieee80211_scan_results(struct cfg80211_registered_device *rdev, struct iw_request_info *info, char *buf, size_t len) { @@ -1475,18 +1485,18 @@ static int ieee80211_scan_results(struct cfg80211_registered_device *dev, char *end_buf = buf + len; struct cfg80211_internal_bss *bss; - spin_lock_bh(&dev->bss_lock); - cfg80211_bss_expire(dev); + spin_lock_bh(&rdev->bss_lock); + cfg80211_bss_expire(rdev); - list_for_each_entry(bss, &dev->bss_list, list) { + list_for_each_entry(bss, &rdev->bss_list, list) { if (buf + len - current_ev <= IW_EV_ADDR_LEN) { - spin_unlock_bh(&dev->bss_lock); + spin_unlock_bh(&rdev->bss_lock); return -E2BIG; } - current_ev = ieee80211_bss(&dev->wiphy, info, bss, + current_ev = ieee80211_bss(&rdev->wiphy, info, bss, current_ev, end_buf); } - spin_unlock_bh(&dev->bss_lock); + spin_unlock_bh(&rdev->bss_lock); return current_ev - buf; }