override net80211's ic_node_alloc function to allocate a full

bwi_node structure (containing the rate control state).
because bwi(4) does not support HostAP or IBSS modes there is
no need to maintain a per-node rate control state, so we could
as well store it in bwi_softc but that will allow for future
improvements.

pointed out by Taylor R Campbell (campbell AT mumble DOT net)
on tech@

diff --git a/sys/dev/ic/bwi.c b/sys/dev/ic/bwi.c
index 12bfabf..01d45fb 100644 (file)
--- a/sys/dev/ic/bwi.c
+++ b/sys/dev/ic/bwi.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: bwi.c,v 1.79 2008/08/27 09:05:03 damien Exp $ */
+/*     $OpenBSD: bwi.c,v 1.80 2008/08/27 09:14:36 damien Exp $ */
 
 /*
  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
@@ -292,6 +292,8 @@ void                 bwi_iter_func(void *, struct ieee80211_node *);
 void            bwi_amrr_timeout(void *);
 void            bwi_newassoc(struct ieee80211com *, struct ieee80211_node *,
                     int);
+struct ieee80211_node
+               *bwi_node_alloc(struct ieee80211com *ic);
 int             bwi_dma_alloc(struct bwi_softc *);
 void            bwi_dma_free(struct bwi_softc *);
 int             bwi_dma_ring_alloc(struct bwi_softc *,
@@ -877,6 +879,7 @@ bwi_attach(struct bwi_softc *sc)
        sc->sc_newstate = ic->ic_newstate;
        ic->ic_newstate = bwi_newstate;
        ic->ic_newassoc = bwi_newassoc;
+       ic->ic_node_alloc = bwi_node_alloc;
 
        ieee80211_media_init(ifp, bwi_media_change, ieee80211_media_status);
 
@@ -7514,6 +7517,18 @@ bwi_newassoc(struct ieee80211com *ic, struct ieee80211_node *ni, int isnew)
        ni->ni_txrate = i;
 }
 
+struct ieee80211_node *
+bwi_node_alloc(struct ieee80211com *ic)
+{
+       struct bwi_node *bn;
+
+       bn = malloc(sizeof(*bn), M_DEVBUF, M_NOWAIT | M_ZERO);
+       if (bn == NULL)
+               return (NULL);
+
+       return ((struct ieee80211_node *)bn);
+}
+
 int
 bwi_dma_alloc(struct bwi_softc *sc)
 {