net80211 rate control framework (net80211 ratectl).

This framework allows drivers to abstract the rate control algorithm and
just feed the framework with the usable parameters. The rate control
framework will now deal with passing the parameters to the selected
algorithm. Right now we have AMRR (the default) and RSSADAPT but there's
no way to select one with ifconfig, yet.
The objective is to have more rate control algorithms in the net80211
stack so all drivers[0] can use it. Ideally, we'll have the well-known
sample rate control algorithm in the net80211 at some point so all
drivers can use it (not just ath).

[0] all drivers that do rate control in software, that is.

Reviewed by:	bschmidt, thompsa, weyongo
MFC after:	1 months

1 files changed, 4 insertions, 1 deletions

diff --git a/sys/net80211/ieee80211_var.h b/sys/net80211/ieee80211_var.h
index 3fa0aec..ff3694f 100644
--- a/sys/net80211/ieee80211_var.h
+++ b/sys/net80211/ieee80211_var.h
@@ -436,6 +436,9 @@ struct ieee80211vap {
 	const struct ieee80211_aclator *iv_acl;	/* acl glue */
 	void			*iv_as;		/* private aclator state */
 
+	const struct ieee80211_ratectl *iv_rate;
+	void			*iv_rs;		/* private ratectl state */
+
 	struct ieee80211_tdma_state *iv_tdma;	/* tdma state */
 	struct ieee80211_mesh_state *iv_mesh;	/* MBSS state */
 	struct ieee80211_hwmp_state *iv_hwmp;	/* HWMP state */
@@ -471,7 +474,7 @@ struct ieee80211vap {
 	/* 802.3 output method for raw frame xmit */
 	int			(*iv_output)(struct ifnet *, struct mbuf *,
 				    struct sockaddr *, struct route *);
-	uint64_t		iv_spare[8];
+	uint64_t		iv_spare[6];
 };
 MALLOC_DECLARE(M_80211_VAP);