Implement a utility function to return the current TX power cap for
the given node. This takes into account the per-node cap, the ic cap and the per-channel regulatory caps. This is designed to replace references to ni_txpower in various net80211 drivers - ni_txpower doesn't necessarily reflect the actual cap for the given node (eg if the node has the default value of 50dBm (100) and the administrator has manually configured a lower TX power.)
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=249568
@ -821,6 +821,28 @@ ieee80211_htchanflags(const struct ieee80211_channel *c)
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IEEE80211_IS_CHAN_HT(c) ? IEEE80211_FHT_HT : 0;
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}
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/*
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* Fetch the current TX power (cap) for the given node.
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*
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* This includes the node and ic/vap TX power limit as needed,
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* but it doesn't take into account any per-rate limit.
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*/
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static __inline uint16_t
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ieee80211_get_node_txpower(struct ieee80211_node *ni)
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{
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struct ieee80211com *ic = ni->ni_ic;
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uint16_t txpower;
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txpower = ni->ni_txpower;
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txpower = MIN(txpower, ic->ic_txpowlimit);
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if (ic->ic_curchan != NULL) {
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txpower = MIN(txpower, 2 * ic->ic_curchan->ic_maxregpower);
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txpower = MIN(txpower, ic->ic_curchan->ic_maxpower);
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}
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return (txpower);
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}
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/*
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* Debugging facilities compiled in when IEEE80211_DEBUG is defined.
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*
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