fix Tx rate selection for management frames in iwx(4)

The Tx rate index stored in ni->ni_txrate is not intended for use
with management frames, yet iwx_tx_fill_cmd() was using it anyway.
Use the minimum basic rate selected within iwx_tx_fill_cmd() instead.

diff --git a/sys/dev/pci/if_iwx.c b/sys/dev/pci/if_iwx.c
index 2166d47..a2ed6b9 100644 (file)
--- a/sys/dev/pci/if_iwx.c
+++ b/sys/dev/pci/if_iwx.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: if_iwx.c,v 1.181 2024/02/16 11:44:52 stsp Exp $       */
+/*     $OpenBSD: if_iwx.c,v 1.182 2024/02/26 18:00:09 stsp Exp $       */
 
 /*
  * Copyright (c) 2014, 2016 genua gmbh <info@genua.de>
@@ -6085,13 +6085,12 @@ iwx_tx_fill_cmd(struct iwx_softc *sc, struct iwx_node *in,
        } else if (sc->sc_rate_n_flags_version >= 2)
                rate_flags |= IWX_RATE_MCS_LEGACY_OFDM_MSK;
 
-       rval = (rs->rs_rates[ni->ni_txrate] & IEEE80211_RATE_VAL);
        if (sc->sc_rate_n_flags_version >= 2) {
                if (rate_flags & IWX_RATE_MCS_LEGACY_OFDM_MSK) {
-                       rate_flags |= (iwx_fw_rateidx_ofdm(rval) &
+                       rate_flags |= (iwx_fw_rateidx_ofdm(rinfo->rate) &
                            IWX_RATE_LEGACY_RATE_MSK);
                } else {
-                       rate_flags |= (iwx_fw_rateidx_cck(rval) &
+                       rate_flags |= (iwx_fw_rateidx_cck(rinfo->rate) &
                            IWX_RATE_LEGACY_RATE_MSK);
                }
        } else