wifi: mac80211: add ieee80211_find_sta_by_link_addrs API
Add a new API function ieee80211_find_sta_by_link_addrs() that looks up the STA and link ID based on interface and station link addresses. We're going to use it for mac80211-hwsim to track on the AP side which links are active. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -5986,6 +5986,22 @@ struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw,
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const u8 *addr,
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const u8 *localaddr);
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/**
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* ieee80211_find_sta_by_link_addrs - find STA by link addresses
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* @hw: pointer as obtained from ieee80211_alloc_hw()
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* @addr: remote station's link address
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* @localaddr: local link address, use %NULL for any (but avoid that)
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* @link_id: pointer to obtain the link ID if the STA is found,
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* may be %NULL if the link ID is not needed
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*
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* Obtain the STA by link address, must use RCU protection.
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*/
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struct ieee80211_sta *
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ieee80211_find_sta_by_link_addrs(struct ieee80211_hw *hw,
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const u8 *addr,
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const u8 *localaddr,
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unsigned int *link_id);
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/**
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* ieee80211_sta_block_awake - block station from waking up
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* @hw: the hardware
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@ -274,6 +274,43 @@ link_sta_info_get_bss(struct ieee80211_sub_if_data *sdata, const u8 *addr)
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return NULL;
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}
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struct ieee80211_sta *
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ieee80211_find_sta_by_link_addrs(struct ieee80211_hw *hw,
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const u8 *addr,
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const u8 *localaddr,
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unsigned int *link_id)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct link_sta_info *link_sta;
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struct rhlist_head *tmp;
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for_each_link_sta_info(local, addr, link_sta, tmp) {
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struct sta_info *sta = link_sta->sta;
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struct ieee80211_link_data *link;
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u8 _link_id = link_sta->link_id;
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if (!localaddr) {
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if (link_id)
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*link_id = _link_id;
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return &sta->sta;
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}
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link = rcu_dereference(sta->sdata->link[_link_id]);
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if (!link)
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continue;
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if (memcmp(link->conf->addr, localaddr, ETH_ALEN))
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continue;
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if (link_id)
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*link_id = _link_id;
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return &sta->sta;
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}
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return NULL;
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}
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EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_link_addrs);
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struct sta_info *sta_info_get_by_addrs(struct ieee80211_local *local,
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const u8 *sta_addr, const u8 *vif_addr)
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{
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