Author: avos
Date: Tue Jan 12 00:12:18 2016
New Revision: 293714
URL: https://svnweb.freebsd.org/changeset/base/293714

Log:
  rtwn: import r290022 (do not filter out control frames in the RX path)
  
  Tested by:    kevlo
  Reviewed by:  kevlo
  Approved by:  adrian (mentor)
  Differential Revision:        https://reviews.freebsd.org/D4838

Modified:
  head/sys/dev/rtwn/if_rtwn.c

Modified: head/sys/dev/rtwn/if_rtwn.c
==============================================================================
--- head/sys/dev/rtwn/if_rtwn.c Tue Jan 12 00:07:26 2016        (r293713)
+++ head/sys/dev/rtwn/if_rtwn.c Tue Jan 12 00:12:18 2016        (r293714)
@@ -1438,7 +1438,7 @@ rtwn_rx_frame(struct rtwn_softc *sc, str
     struct rtwn_rx_data *rx_data, int desc_idx)
 {
        struct ieee80211com *ic = &sc->sc_ic;
-       struct ieee80211_frame *wh;
+       struct ieee80211_frame_min *wh;
        struct ieee80211_node *ni;
        struct r92c_rx_phystat *phy = NULL;
        uint32_t rxdw0, rxdw3;
@@ -1462,7 +1462,8 @@ rtwn_rx_frame(struct rtwn_softc *sc, str
        }
 
        pktlen = MS(rxdw0, R92C_RXDW0_PKTLEN);
-       if (__predict_false(pktlen < sizeof(*wh) || pktlen > MCLBYTES)) {
+       if (__predict_false(pktlen < sizeof(struct ieee80211_frame_ack) ||
+           pktlen > MCLBYTES)) {
                counter_u64_add(ic->ic_ierrors, 1);
                return;
        }
@@ -1554,10 +1555,13 @@ rtwn_rx_frame(struct rtwn_softc *sc, str
        }
 
        RTWN_UNLOCK(sc);
-       wh = mtod(m, struct ieee80211_frame *);
+       wh = mtod(m, struct ieee80211_frame_min *);
+       if (m->m_len >= sizeof(*wh))
+               ni = ieee80211_find_rxnode(ic, wh);
+       else
+               ni = NULL;
 
        /* Send the frame to the 802.11 layer. */
-       ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
        if (ni != NULL) {
                (void)ieee80211_input(ni, m, rssi - nf, nf);
                /* Node is no longer needed. */
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