fix iwx session protection event duration

Firmware expects time in TU units.
Use 900 TU for the session protection timeout, like the linux driver does.

verified with Johannes Berg from Linux/Intel, thanks for the support!

diff --git a/sys/dev/pci/if_iwx.c b/sys/dev/pci/if_iwx.c
index d12efc2..47a93cf 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 1.163 2023/03/06 11:18:37 stsp Exp $       */
+/*     $OpenBSD: if_iwx.c,v 1.164 2023/03/06 11:21:24 stsp Exp $       */
 
 /*
  * Copyright (c) 2014, 2016 genua gmbh <info@genua.de>
@@ -2978,14 +2978,14 @@ iwx_post_alive(struct iwx_softc *sc)
 
 int
 iwx_schedule_session_protection(struct iwx_softc *sc, struct iwx_node *in,
-    uint32_t duration)
+    uint32_t duration_tu)
 {
        struct iwx_session_prot_cmd cmd = {
                .id_and_color = htole32(IWX_FW_CMD_ID_AND_COLOR(in->in_id,
                    in->in_color)),
                .action = htole32(IWX_FW_CTXT_ACTION_ADD),
                .conf_id = htole32(IWX_SESSION_PROTECT_CONF_ASSOC),
-               .duration_tu = htole32(duration * IEEE80211_DUR_TU),
+               .duration_tu = htole32(duration_tu),
        };
        uint32_t cmd_id;
        int err;
@@ -8183,9 +8183,9 @@ iwx_auth(struct iwx_softc *sc)
         * by "protecting" the session with a time event.
         */
        if (in->in_ni.ni_intval)
-               duration = in->in_ni.ni_intval * 2;
+               duration = in->in_ni.ni_intval * 9;
        else
-               duration = IEEE80211_DUR_TU; 
+               duration = 900; 
        return iwx_schedule_session_protection(sc, in, duration);
 rm_mgmt_queue:
        if (generation == sc->sc_generation)