[net80211] convert all of the WME use over to a temporary copy of WME info.

This removes the direct WME info access in the ieee80211com struct and instead
provides a method of fetching the data.  Right now it's a no-op but eventually
it'll turn into a per-VAP method for drivers that support it (eg iwn, iwm,
upcoming ath10k work) as things like p2p support require this kind of behaviour.

Tested:

* ath(4), STA and AP mode

TODO:

* yes, this is slightly stack size-y, but it is an important first step
  to get drivers migrated over to a sensible WME API.  A lot of per-phy things
  need to be converted to per-VAP before P2P, 11ac firmware, etc stuff shows up.

1 files changed, 4 insertions, 2 deletions

diff --git a/sys/dev/iwn/if_iwn.c b/sys/dev/iwn/if_iwn.c
index 65f1fa449e52..738ebb31a60a 100644
--- a/sys/dev/iwn/if_iwn.c
+++ b/sys/dev/iwn/if_iwn.c
@@ -5301,17 +5301,19 @@ iwn_updateedca(struct ieee80211com *ic)
 #define IWN_EXP2(x)	((1 << (x)) - 1)	/* CWmin = 2^ECWmin - 1 */
 	struct iwn_softc *sc = ic->ic_softc;
 	struct iwn_edca_params cmd;
+	struct chanAccParams chp;
 	int aci;
 
 	DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__);
 
+	ieee80211_wme_ic_getparams(ic, &chp);
+
 	memset(&cmd, 0, sizeof cmd);
 	cmd.flags = htole32(IWN_EDCA_UPDATE);
 
 	IEEE80211_LOCK(ic);
 	for (aci = 0; aci < WME_NUM_AC; aci++) {
-		const struct wmeParams *ac =
-		    &ic->ic_wme.wme_chanParams.cap_wmeParams[aci];
+		const struct wmeParams *ac = &chp.cap_wmeParams[aci];
 		cmd.ac[aci].aifsn = ac->wmep_aifsn;
 		cmd.ac[aci].cwmin = htole16(IWN_EXP2(ac->wmep_logcwmin));
 		cmd.ac[aci].cwmax = htole16(IWN_EXP2(ac->wmep_logcwmax));