otus(4) - add initial monitor mode; use lowest rate for EAPOL

The monitor mode stuff is from the openbsd driver, but it doesn't
100% work.  It doesn't seem to get all frames for all BSSes.
However, it's enough to at start debugging things.  That 0xffffffff
write is /I think/ the RX filter, but I am still not 100% sure about
it all.

Then, whilst here, use the lowest rate for EAPOL frames.  This is just
generally a good thing to do.

diff --git a/sys/dev/otus/if_otus.c b/sys/dev/otus/if_otus.c
index 1808c950c49642c47478363feacb0d09b8c316c4..1f0df91b82d31525f9521499799fb3a31edf80ac 100644 (file)
--- a/sys/dev/otus/if_otus.c
+++ b/sys/dev/otus/if_otus.c
@@ -759,6 +759,7 @@ otus_attachhook(struct otus_softc *sc)
            IEEE80211_C_WME |           /* WME/QoS */
            IEEE80211_C_SHSLOT |        /* Short slot time supported. */
            IEEE80211_C_FF |            /* Atheros fast-frames supported. */
+           IEEE80211_C_MONITOR |
            IEEE80211_C_WPA;            /* WPA/RSN. */
 
        /* XXX TODO: 11n */
@@ -2229,6 +2230,9 @@ otus_tx(struct otus_softc *sc, struct ieee80211_node *ni, struct mbuf *m,
            (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_DATA) {
                /* Get lowest rate */
                rate = otus_rate_to_hw_rate(sc, 0);
+       } else if (m->m_flags & M_EAPOL) {
+               /* Get lowest rate */
+               rate = otus_rate_to_hw_rate(sc, 0);
        } else {
                (void) ieee80211_ratectl_rate(ni, NULL, 0);
                rate = otus_rate_to_hw_rate(sc, ni->ni_txrate);
@@ -3094,13 +3098,22 @@ otus_init(struct otus_softc *sc)
        }
 #endif
 
-       /* Expect STA operation */
-       otus_write(sc, 0x1c3700, 0x0f000002);
-       otus_write(sc, 0x1c3c40, 0x1);
+       switch (ic->ic_opmode) {
+       case IEEE80211_M_STA:
+               otus_write(sc, 0x1c3700, 0x0f000002);
+               otus_write(sc, 0x1c3c40, 0x1);
+               break;
+       case IEEE80211_M_MONITOR:
+               otus_write(sc, 0x1c368c, 0xffffffff);
+               break;
+       default:
+               break;
+       }
 
        /* XXX ic_opmode? */
        otus_write(sc, AR_MAC_REG_SNIFFER,
            (ic->ic_opmode == IEEE80211_M_MONITOR) ? 0x2000001 : 0x2000000);
+
        (void)otus_write_barrier(sc);
 
        sc->bb_reset = 1;       /* Force cold reset. */