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openwrt/package/madwifi/patches/371-wds_sta_separation.patch

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--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
@@ -202,6 +202,7 @@
struct ieee80211com *ic = vap->iv_ic;
struct net_device *dev = vap->iv_dev;
struct ieee80211_node *ni_wds = NULL;
+ struct net_device_stats *stats;
struct ieee80211_frame *wh;
struct ieee80211_key *key;
struct ether_header *eh;
@@ -562,11 +563,14 @@
if (ni_wds != NULL) {
ieee80211_unref_node(&ni);
ni = ieee80211_ref_node(ni_wds);
+ } else if (!ni->ni_subif &&
+ (vap->iv_flags_ext & IEEE80211_FEXT_WDSSEP)) {
+ ieee80211_wds_addif(ni);
}
}
/* XXX: Useless node mgmt API; make better */
- if ((dir == IEEE80211_FC1_DIR_DSTODS) && !ni_wds) {
+ if ((dir == IEEE80211_FC1_DIR_DSTODS) && !ni_wds && !ni->ni_subif) {
struct ieee80211_node_table *nt = &ic->ic_sta;
struct ieee80211_frame_addr4 *wh4;
@@ -698,8 +702,12 @@
if (! accept_data_frame(vap, ni, key, skb, eh))
goto out;
- vap->iv_devstats.rx_packets++;
- vap->iv_devstats.rx_bytes += skb->len;
+ if (ni->ni_subif && ((eh)->ether_type != __constant_htons(ETHERTYPE_PAE)))
+ stats = &ni->ni_subif->iv_devstats;
+ else
+ stats = &vap->iv_devstats;
+ stats->rx_packets++;
+ stats->rx_bytes += skb->len;
IEEE80211_NODE_STAT(ni, rx_data);
IEEE80211_NODE_STAT_ADD(ni, rx_bytes, skb->len);
ic->ic_lastdata = jiffies;
@@ -1132,6 +1140,13 @@
dev = vap->iv_xrvap->iv_dev;
#endif
+ /* if the node has a wds subif, move data frames there,
+ * but keep EAP traffic on the master */
+ if (ni->ni_subif && ((eh)->ether_type != __constant_htons(ETHERTYPE_PAE))) {
+ vap = ni->ni_subif;
+ dev = vap->iv_dev;
+ }
+
/* perform as a bridge within the vap */
/* XXX intra-vap bridging only */
if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
@@ -1157,6 +1172,7 @@
if (ni1 != NULL) {
if (ni1->ni_vap == vap &&
ieee80211_node_is_authorized(ni1) &&
+ !ni->ni_subif &&
ni1 != vap->iv_bss) {
skb1 = skb;
skb = NULL;
--- a/net80211/ieee80211_ioctl.h
+++ b/net80211/ieee80211_ioctl.h
@@ -649,6 +649,7 @@
IEEE80211_PARAM_BGSCAN_THRESH = 79, /* bg scan rssi threshold */
IEEE80211_PARAM_RSSI_DIS_THR = 80, /* rssi threshold for disconnection */
IEEE80211_PARAM_RSSI_DIS_COUNT = 81, /* counter for rssi threshold */
+ IEEE80211_PARAM_WDS_SEP = 82, /* move wds stations into separate interfaces */
};
#define SIOCG80211STATS (SIOCDEVPRIVATE+2)
--- a/net80211/ieee80211_node.h
+++ b/net80211/ieee80211_node.h
@@ -92,11 +92,12 @@
* the ieee80211com structure.
*/
struct ieee80211_node {
- struct ieee80211vap *ni_vap;
+ struct ieee80211vap *ni_vap, *ni_subif;
struct ieee80211com *ni_ic;
struct ieee80211_node_table *ni_table;
TAILQ_ENTRY(ieee80211_node) ni_list;
LIST_ENTRY(ieee80211_node) ni_hash;
+ struct work_struct ni_destroy; /* task for destroying a subif */
atomic_t ni_refcnt;
u_int ni_scangen; /* gen# for timeout scan */
u_int8_t ni_authmode; /* authentication algorithm */
@@ -430,5 +431,6 @@
void ieee80211_node_leave(struct ieee80211_node *);
u_int8_t ieee80211_getrssi(struct ieee80211com *);
int32_t ieee80211_get_node_count(struct ieee80211com *);
+void ieee80211_wds_addif(struct ieee80211_node *ni);
#endif /* _NET80211_IEEE80211_NODE_H_ */
--- a/net80211/ieee80211_var.h
+++ b/net80211/ieee80211_var.h
@@ -322,6 +322,7 @@
u_int8_t ic_myaddr[IEEE80211_ADDR_LEN];
struct timer_list ic_inact; /* mgmt/inactivity timer */
+ unsigned int ic_subifs;
u_int32_t ic_flags; /* state flags */
u_int32_t ic_flags_ext; /* extension of state flags */
u_int32_t ic_caps; /* capabilities */
@@ -625,6 +626,7 @@
#define IEEE80211_FEXT_DROPUNENC_EAPOL 0x00000800 /* CONF: drop unencrypted eapol frames */
#define IEEE80211_FEXT_APPIE_UPDATE 0x00001000 /* STATE: beacon APP IE updated */
#define IEEE80211_FEXT_BGSCAN_THR 0x00002000 /* bgscan due to low rssi */
+#define IEEE80211_FEXT_WDSSEP 0x00004000 /* move wds clients into separate interfaces */
#define IEEE80211_COM_UAPSD_ENABLE(_ic) ((_ic)->ic_flags_ext |= IEEE80211_FEXT_UAPSD)
#define IEEE80211_COM_UAPSD_DISABLE(_ic) ((_ic)->ic_flags_ext &= ~IEEE80211_FEXT_UAPSD)
--- a/net80211/ieee80211_wireless.c
+++ b/net80211/ieee80211_wireless.c
@@ -2867,6 +2867,14 @@
else
vap->iv_minrateindex = 0;
break;
+ case IEEE80211_PARAM_WDS_SEP:
+ if (vap->iv_opmode != IEEE80211_M_HOSTAP)
+ retv = -EINVAL;
+ else if (value)
+ vap->iv_flags_ext |= IEEE80211_FEXT_WDSSEP;
+ else
+ vap->iv_flags_ext &= ~IEEE80211_FEXT_WDSSEP;
+ break;
#ifdef ATH_REVERSE_ENGINEERING
case IEEE80211_PARAM_DUMPREGS:
ieee80211_dump_registers(dev, info, w, extra);
@@ -3223,6 +3231,9 @@
case IEEE80211_PARAM_MINRATE:
param[0] = vap->iv_minrateindex;
break;
+ case IEEE80211_PARAM_WDS_SEP:
+ param[0] = !!(vap->iv_flags_ext & IEEE80211_FEXT_WDSSEP);
+ break;
default:
return -EOPNOTSUPP;
}
@@ -5767,6 +5778,10 @@
0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_minrate"},
{ IEEE80211_IOCTL_SETSCANLIST,
IW_PRIV_TYPE_CHAR | 255, 0, "setscanlist"},
+ { IEEE80211_PARAM_WDS_SEP,
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "wdssep"},
+ { IEEE80211_PARAM_WDS_SEP,
+ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_wdssep"},
#ifdef ATH_REVERSE_ENGINEERING
/*
--- a/net80211/ieee80211_node.c
+++ b/net80211/ieee80211_node.c
@@ -47,6 +47,7 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/random.h>
+#include <linux/rtnetlink.h>
#include "if_media.h"
@@ -236,7 +237,11 @@
ieee80211_node_vdetach(struct ieee80211vap *vap)
{
struct ieee80211com *ic = vap->iv_ic;
+ struct ieee80211_node *ni;
+ ni = vap->iv_wdsnode;
+ if (ni)
+ ni->ni_subif = NULL;
ieee80211_node_table_reset(&ic->ic_sta, vap);
if (vap->iv_bss != NULL) {
ieee80211_unref_node(&vap->iv_bss);
@@ -1134,6 +1139,40 @@
return ni;
}
+#define WDSIFNAME ".sta%d"
+void ieee80211_wds_addif(struct ieee80211_node *ni)
+{
+ struct ieee80211vap *vap = ni->ni_vap;
+ struct ieee80211com *ic = vap->iv_ic;
+ struct ieee80211vap *avp;
+ char *name;
+
+ /* check if the node is split out already */
+ if (ni->ni_subif)
+ return;
+
+ name = kmalloc(strlen(vap->iv_dev->name) + sizeof(WDSIFNAME) + 1, GFP_KERNEL);
+ if (!name)
+ return;
+
+ strcpy(name, vap->iv_dev->name);
+ strcat(name, WDSIFNAME);
+ rtnl_lock();
+ avp = ieee80211_create_vap(ic, name, ic->ic_dev, IEEE80211_M_WDS, 0, vap);
+ kfree(name);
+ if (!avp)
+ goto done;
+
+ memcpy(avp->wds_mac, ni->ni_bssid, IEEE80211_ADDR_LEN);
+ avp->iv_wdsnode = ieee80211_ref_node(ni);
+ ni->ni_subif = avp;
+ ic->ic_subifs++;
+
+done:
+ rtnl_unlock();
+}
+#undef WDSIFNAME
+
/* Add wds address to the node table */
int
#ifdef IEEE80211_DEBUG_REFCNT
@@ -2254,6 +2293,28 @@
}
}
+static void
+ieee80211_subif_destroy(struct work_struct *work)
+{
+ struct ieee80211_node *ni = container_of(work, struct ieee80211_node, ni_destroy);
+ struct ieee80211vap *vap = ni->ni_subif;
+ struct ieee80211com *ic;
+
+ if (!vap)
+ goto done;
+
+ rtnl_lock();
+ ic = vap->iv_ic;
+ ni->ni_subif = NULL;
+ ieee80211_stop(vap->iv_dev);
+ ic->ic_vap_delete(vap);
+ ic->ic_subifs--;
+ rtnl_unlock();
+
+done:
+ ieee80211_unref_node(&ni);
+}
+
/*
* Handle bookkeeping for a station/neighbor leaving
* the bss when operating in ap or adhoc modes.
@@ -2270,6 +2331,12 @@
ni, "station with aid %d leaves (refcnt %u)",
IEEE80211_NODE_AID(ni), atomic_read(&ni->ni_refcnt));
+ if (ni->ni_subif) {
+ ieee80211_ref_node(ni);
+ IEEE80211_INIT_WORK(&ni->ni_destroy, ieee80211_subif_destroy);
+ schedule_work(&ni->ni_destroy);
+ }
+
/* From this point onwards we can no longer find the node,
* so no more references are generated
*/
--- a/net80211/ieee80211_linux.h
+++ b/net80211/ieee80211_linux.h
@@ -81,6 +81,12 @@
#endif
}
+#ifndef container_of
+#define container_of(ptr, type, member) ({ \
+ const typeof( ((type *)0)->member ) *__mptr = (ptr); \
+ (type *)( (char *)__mptr - offsetof(type,member) );})
+#endif
+
/*
* Task deferral
*
@@ -113,6 +119,29 @@
#define IEEE80211_RESCHEDULE schedule
+#include <linux/sched.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,41)
+#include <linux/tqueue.h>
+#define work_struct tq_struct
+#define schedule_work(t) schedule_task((t))
+#define flush_scheduled_work() flush_scheduled_tasks()
+#define IEEE80211_INIT_WORK(t, f) do { \
+ memset((t), 0, sizeof(struct tq_struct)); \
+ (t)->routine = (void (*)(void*)) (f); \
+ (t)->data=(void *) (t); \
+} while (0)
+#else
+#include <linux/workqueue.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+#define IEEE80211_INIT_WORK(_t, _f) INIT_WORK((_t), (void (*)(void *))(_f), (_t));
+#else
+#define IEEE80211_INIT_WORK(_t, _f) INIT_WORK((_t), (_f));
+#endif
+
+#endif /* KERNEL_VERSION < 2.5.41 */
+
+
/* Locking */
/* NB: beware, spin_is_locked() is not usefully defined for !(DEBUG || SMP)
* because spinlocks do not exist in this configuration. Instead IRQs
@@ -167,6 +196,18 @@
IEEE80211_VAPS_LOCK_ASSERT(_ic); \
spin_unlock_bh(&(_ic)->ic_vapslock); \
} while (0)
+#define IEEE80211_VAPS_LOCK_IRQ(_ic) do { \
+ unsigned long __vlockflags; \
+ IEEE80211_VAPS_LOCK_CHECK(_ic); \
+ spin_lock_irqsave(&(_ic)->ic_vapslock, __vlockflags);
+#define IEEE80211_VAPS_UNLOCK_IRQ(_ic) \
+ IEEE80211_VAPS_LOCK_ASSERT(_ic); \
+ spin_unlock_irqrestore(&(_ic)->ic_vapslock, __vlockflags); \
+} while (0)
+#define IEEE80211_VAPS_UNLOCK_IRQ_EARLY(_ic) \
+ IEEE80211_VAPS_LOCK_ASSERT(_ic); \
+ spin_unlock_irqrestore(&(_ic)->ic_vapslock, __vlockflags);
+
#if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
#define IEEE80211_VAPS_LOCK_ASSERT(_ic) \
--- a/net80211/ieee80211_proto.c
+++ b/net80211/ieee80211_proto.c
@@ -1081,6 +1081,8 @@
int
ieee80211_open(struct net_device *dev)
{
+ struct ieee80211vap *vap = dev->priv;
+
return ieee80211_init(dev, 0);
}
@@ -1116,11 +1118,33 @@
struct ieee80211vap *vap = dev->priv;
struct ieee80211com *ic = vap->iv_ic;
struct net_device *parent = ic->ic_dev;
+ struct ieee80211_node *tni, *ni;
IEEE80211_DPRINTF(vap,
IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
"%s\n", "stop running");
+ /* get rid of all wds nodes while we're still locked */
+ do {
+ ni = NULL;
+
+ IEEE80211_NODE_TABLE_LOCK_IRQ(&ic->ic_sta);
+ TAILQ_FOREACH(tni, &ic->ic_sta.nt_node, ni_list) {
+ if (tni->ni_vap != vap)
+ continue;
+ if (!tni->ni_subif)
+ continue;
+ ni = tni;
+ break;
+ }
+ IEEE80211_NODE_TABLE_UNLOCK_IRQ(&ic->ic_sta);
+
+ if (!ni)
+ break;
+
+ ieee80211_node_leave(ni);
+ } while (1);
+
ieee80211_new_state(vap, IEEE80211_S_INIT, -1);
if (dev->flags & IFF_RUNNING) {
dev->flags &= ~IFF_RUNNING; /* mark us stopped */
@@ -1342,9 +1366,9 @@
struct ieee80211com *ic = vap->iv_ic;
int rc;
- IEEE80211_VAPS_LOCK_BH(ic);
+ IEEE80211_VAPS_LOCK_IRQ(ic);
rc = vap->iv_newstate(vap, nstate, arg);
- IEEE80211_VAPS_UNLOCK_BH(ic);
+ IEEE80211_VAPS_UNLOCK_IRQ(ic);
return rc;
}
--- a/net80211/ieee80211.c
+++ b/net80211/ieee80211.c
@@ -599,8 +599,10 @@
IEEE80211_CANCEL_TQUEUE(&vap->iv_stajoin1tq);
IEEE80211_LOCK_IRQ(ic);
- if (vap->iv_wdsnode)
+ if (vap->iv_wdsnode) {
+ vap->iv_wdsnode->ni_subif = NULL;
ieee80211_unref_node(&vap->iv_wdsnode);
+ }
if ((vap->iv_opmode == IEEE80211_M_WDS) &&
(vap->iv_master != NULL))
TAILQ_REMOVE(&vap->iv_master->iv_wdslinks, vap, iv_wdsnext);
--- a/ath/if_athvar.h
+++ b/ath/if_athvar.h
@@ -79,28 +79,6 @@
#define tasklet_enable(t) do { (void) t; local_bh_enable(); } while (0)
#endif /* !DECLARE_TASKLET */
-#include <linux/sched.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,41)
-#include <linux/tqueue.h>
-#define work_struct tq_struct
-#define schedule_work(t) schedule_task((t))
-#define flush_scheduled_work() flush_scheduled_tasks()
-#define ATH_INIT_WORK(t, f) do { \
- memset((t), 0, sizeof(struct tq_struct)); \
- (t)->routine = (void (*)(void*)) (f); \
- (t)->data=(void *) (t); \
-} while (0)
-#else
-#include <linux/workqueue.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
-#define ATH_INIT_WORK(_t, _f) INIT_WORK((_t), (void (*)(void *))(_f), (_t));
-#else
-#define ATH_INIT_WORK(_t, _f) INIT_WORK((_t), (_f));
-#endif
-
-#endif /* KERNEL_VERSION < 2.5.41 */
-
/*
* Guess how the interrupt handler should work.
*/
--- a/net80211/ieee80211_output.c
+++ b/net80211/ieee80211_output.c
@@ -786,6 +786,8 @@
hdrsize = sizeof(struct ieee80211_frame);
SKB_CB(skb)->auth_pkt = (eh.ether_type == __constant_htons(ETHERTYPE_PAE));
+ if (!SKB_CB(skb)->auth_pkt && ni->ni_subif)
+ vap = ni->ni_subif;
switch (vap->iv_opmode) {
case IEEE80211_M_IBSS:
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