net80211: fix panic for DWDS vaps
Since r248069, TX IC lock must obtained before calling ieee80211_encap() and/or ieee80211_parent_xmitpkt(). Tested with: Intel 3945BG.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=297287
@ -288,9 +288,11 @@ ieee80211_dwds_mcast(struct ieee80211vap *vap0, struct mbuf *m)
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/*
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* Encapsulate the packet in prep for transmission.
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*/
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IEEE80211_TX_LOCK(ic);
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mcopy = ieee80211_encap(vap, ni, mcopy);
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if (mcopy == NULL) {
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/* NB: stat+msg handled in ieee80211_encap */
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IEEE80211_TX_UNLOCK(ic);
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ieee80211_free_node(ni);
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continue;
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}
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@ -298,6 +300,7 @@ ieee80211_dwds_mcast(struct ieee80211vap *vap0, struct mbuf *m)
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mcopy->m_pkthdr.rcvif = (void *) ni;
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err = ieee80211_parent_xmitpkt(ic, mcopy);
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IEEE80211_TX_UNLOCK(ic);
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if (!err) {
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if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
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if_inc_counter(ifp, IFCOUNTER_OMCASTS, 1);
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