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Code

madwifi: more fixes and cleanups for wds sta separation

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12082 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2008-08-03 21:00:34 +00:00
parent 78fa722e25
commit f78a2712af
2 changed files with 360 additions and 25 deletions
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379
package/madwifi/patches/371-wds_sta_separation.patch
View File

@ -8,12 +8,78 @@
struct ieee80211_frame *wh;
struct ieee80211_key *key;
struct ether_header *eh;
@@ -562,11 +563,14 @@
@@ -435,7 +436,7 @@
switch (type) {
case IEEE80211_FC0_TYPE_DATA:
- hdrspace = ieee80211_hdrspace(ic, wh);
+ hdrspace = ieee80211_hdrsize(wh);
if (skb->len < hdrspace) {
IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
wh, "data", "too short: len %u, expecting %u",
@@ -446,15 +447,20 @@
switch (vap->iv_opmode) {
case IEEE80211_M_STA:
if ((dir != IEEE80211_FC1_DIR_FROMDS) &&
- (!((vap->iv_flags_ext & IEEE80211_FEXT_WDS) &&
- (dir == IEEE80211_FC1_DIR_DSTODS)))) {
+ (!(vap->iv_flags_ext & IEEE80211_FEXT_WDS) &&
+ (dir == IEEE80211_FC1_DIR_DSTODS))) {
IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
wh, "data", "invalid dir 0x%x", dir);
vap->iv_stats.is_rx_wrongdir++;
goto out;
}
- if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+ if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+ /* ignore 3-addr mcast if we're WDS STA */
+ if ((vap->iv_flags_ext & IEEE80211_FEXT_WDS) &&
+ (dir != IEEE80211_FC1_DIR_DSTODS))
+ goto out;
+
/* Discard multicast if IFF_MULTICAST not set */
if ((0 != memcmp(wh->i_addr3, dev->broadcast, ETH_ALEN)) &&
(0 == (dev->flags & IFF_MULTICAST))) {
@@ -482,24 +488,6 @@
vap->iv_stats.is_rx_mcastecho++;
goto out;
}
- /*
- * if it is brodcasted by me on behalf of
- * a station behind me, drop it.
- */
- if (vap->iv_flags_ext & IEEE80211_FEXT_WDS) {
- struct ieee80211_node_table *nt;
- struct ieee80211_node *ni_wds;
- nt = &ic->ic_sta;
- ni_wds = ieee80211_find_wds_node(nt, wh->i_addr3);
- if (ni_wds) {
- ieee80211_unref_node(&ni_wds);
- IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
- wh, NULL, "%s",
- "multicast echo originated from node behind me");
- vap->iv_stats.is_rx_mcastecho++;
- goto out;
- }
- }
}
break;
case IEEE80211_M_IBSS:
@@ -548,7 +536,7 @@
*/
/* check for wds link first */
- if (dir == IEEE80211_FC1_DIR_DSTODS) {
+ if ((dir == IEEE80211_FC1_DIR_DSTODS) && !ni->ni_subif) {
struct ieee80211vap *avp;
TAILQ_FOREACH(avp, &vap->iv_wdslinks, iv_wdsnext) {
@@ -562,11 +550,13 @@
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)) {
+ } else if (vap->iv_flags_ext & IEEE80211_FEXT_WDSSEP) {
+ ieee80211_wds_addif(ni);
}
}
@ -24,7 +90,19 @@
struct ieee80211_node_table *nt = &ic->ic_sta;
struct ieee80211_frame_addr4 *wh4;
@@ -698,8 +702,12 @@
@@ -626,6 +616,11 @@
goto out;
}
+ /* check if there is any data left */
+ hdrspace = ieee80211_hdrspace(ic, wh);
+ if (skb->len < hdrspace)
+ goto out;
+
/*
* Handle privacy requirements. Note that we
* must not be preempted from here until after
@@ -698,8 +693,12 @@
if (! accept_data_frame(vap, ni, key, skb, eh))
goto out;
@ -39,7 +117,7 @@
IEEE80211_NODE_STAT(ni, rx_data);
IEEE80211_NODE_STAT_ADD(ni, rx_bytes, skb->len);
ic->ic_lastdata = jiffies;
@@ -1132,6 +1140,13 @@
@@ -1132,6 +1131,13 @@
dev = vap->iv_xrvap->iv_dev;
#endif
@ -53,7 +131,7 @@
/* perform as a bridge within the vap */
/* XXX intra-vap bridging only */
if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
@@ -1157,6 +1172,7 @@
@@ -1157,6 +1163,7 @@
if (ni1 != NULL) {
if (ni1->ni_vap == vap &&
ieee80211_node_is_authorized(ni1) &&
@ -73,7 +151,7 @@
#define SIOCG80211STATS (SIOCDEVPRIVATE+2)
--- a/net80211/ieee80211_node.h
+++ b/net80211/ieee80211_node.h
@@ -92,11 +92,12 @@
@@ -92,11 +92,13 @@
* the ieee80211com structure.
*/
struct ieee80211_node {
@ -83,11 +161,12 @@
struct ieee80211_node_table *ni_table;
TAILQ_ENTRY(ieee80211_node) ni_list;
LIST_ENTRY(ieee80211_node) ni_hash;
+ struct work_struct ni_create; /* task for creating a subif */
+ 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 @@
@@ -430,5 +432,6 @@
void ieee80211_node_leave(struct ieee80211_node *);
u_int8_t ieee80211_getrssi(struct ieee80211com *);
int32_t ieee80211_get_node_count(struct ieee80211com *);
@ -203,29 +282,32 @@
ieee80211_node_table_reset(&ic->ic_sta, vap);
if (vap->iv_bss != NULL) {
ieee80211_unref_node(&vap->iv_bss);
@@ -1134,6 +1139,40 @@
@@ -1134,6 +1139,57 @@
return ni;
}
+#define WDSIFNAME ".sta%d"
+void ieee80211_wds_addif(struct ieee80211_node *ni)
+static void
+ieee80211_wds_do_addif(struct work_struct *work)
+{
+ struct ieee80211_node *ni = container_of(work, struct ieee80211_node, ni_create);
+ 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;
+ rtnl_lock();
+ /* did we get cancelled by the destroy call? */
+ if (!ni->ni_subif)
+ goto done;
+
+ ni->ni_subif = NULL;
+ name = kmalloc(strlen(vap->iv_dev->name) + sizeof(WDSIFNAME) + 1, GFP_KERNEL);
+ if (!name)
+ return;
+ goto done;
+
+ 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)
@ -238,13 +320,27 @@
+
+done:
+ rtnl_unlock();
+ ieee80211_unref_node(&ni);
+}
+#undef WDSIFNAME
+
+void ieee80211_wds_addif(struct ieee80211_node *ni)
+{
+ /* check if the node is split out already,
+ * or if we're in progress of setting up a new interface already */
+ if (ni->ni_subif)
+ return;
+
+ ieee80211_ref_node(ni);
+ ni->ni_subif = ni->ni_vap;
+ IEEE80211_INIT_WORK(&ni->ni_create, ieee80211_wds_do_addif);
+ schedule_work(&ni->ni_create);
+}
+
/* Add wds address to the node table */
int
#ifdef IEEE80211_DEBUG_REFCNT
@@ -2254,6 +2293,28 @@
@@ -2254,6 +2310,36 @@
}
}
@ -252,28 +348,36 @@
+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 ieee80211vap *vap;
+ struct ieee80211com *ic;
+
+ rtnl_lock();
+ vap = ni->ni_subif;
+
+ /* if addif is waiting for the timer to fire, cancel! */
+ if (vap == ni->ni_vap) {
+ ni->ni_subif = NULL;
+ goto done;
+ }
+
+ 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);
+ rtnl_unlock();
+}
+
/*
* Handle bookkeeping for a station/neighbor leaving
* the bss when operating in ap or adhoc modes.
@@ -2270,6 +2331,12 @@
@@ -2270,6 +2356,12 @@
ni, "station with aid %d leaves (refcnt %u)",
IEEE80211_NODE_AID(ni), atomic_read(&ni->ni_refcnt));
@ -407,9 +511,60 @@
return rc;
}
@@ -1630,6 +1654,7 @@
*/
if (ni->ni_authmode != IEEE80211_AUTH_8021X)
ieee80211_node_authorize(ni);
+
#ifdef ATH_SUPERG_XR
/*
* fire a timer to bring up XR vap if configured.
@@ -1885,8 +1910,15 @@
if (ostate == IEEE80211_S_SCAN ||
ostate == IEEE80211_S_AUTH ||
ostate == IEEE80211_S_ASSOC) {
+
/* Transition (S_SCAN|S_AUTH|S_ASSOC) -> S_RUN */
__ieee80211_newstate(vap, nstate, arg);
+
+ /* if we're in wds, let the ap know that we're doing this */
+ if ((vap->iv_opmode == IEEE80211_M_STA) &&
+ (vap->iv_flags_ext & IEEE80211_FEXT_WDS))
+ ieee80211_send_nulldata(ieee80211_ref_node(vap->iv_bss));
+
/* Then bring up all other vaps pending on the scan */
dstate = get_dominant_state(ic);
if (dstate == IEEE80211_S_RUN) {
--- a/net80211/ieee80211.c
+++ b/net80211/ieee80211.c
@@ -599,8 +599,10 @@
@@ -373,10 +373,25 @@
ieee80211_ifdetach(struct ieee80211com *ic)
{
struct ieee80211vap *vap;
+ int count;
+
+ /* bring down all vaps */
+ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
+ ieee80211_stop(vap->iv_dev);
+ }
+
+ /* wait for all subifs to disappear */
+ do {
+ schedule();
+ rtnl_lock();
+ count = ic->ic_subifs;
+ rtnl_unlock();
+ } while (count > 0);
rtnl_lock();
- while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL)
+ while ((vap = TAILQ_FIRST(&ic->ic_vaps)) != NULL) {
ic->ic_vap_delete(vap);
+ }
rtnl_unlock();
del_timer(&ic->ic_dfs_excl_timer);
@@ -599,8 +614,10 @@
IEEE80211_CANCEL_TQUEUE(&vap->iv_stajoin1tq);
IEEE80211_LOCK_IRQ(ic);
@ -454,7 +609,133 @@
*/
--- a/net80211/ieee80211_output.c
+++ b/net80211/ieee80211_output.c
@@ -786,6 +786,8 @@
@@ -261,6 +261,10 @@
goto bad;
}
+ if (ni->ni_subif && (vap != ni->ni_subif) &&
+ ((eh)->ether_type != __constant_htons(ETHERTYPE_PAE)))
+ goto bad;
+
/* calculate priority so drivers can find the TX queue */
if (ieee80211_classify(ni, skb)) {
IEEE80211_NOTE(vap, IEEE80211_MSG_OUTPUT, ni,
@@ -340,20 +344,33 @@
* constructing a frame as it sets i_fc[1]; other bits can
* then be or'd in.
*/
-static void
+static struct ieee80211_frame *
ieee80211_send_setup(struct ieee80211vap *vap,
struct ieee80211_node *ni,
- struct ieee80211_frame *wh,
+ struct sk_buff *skb,
int type,
const u_int8_t sa[IEEE80211_ADDR_LEN],
const u_int8_t da[IEEE80211_ADDR_LEN],
const u_int8_t bssid[IEEE80211_ADDR_LEN])
{
#define WH4(wh) ((struct ieee80211_frame_addr4 *)wh)
+ struct ieee80211_frame *wh;
+ int len = sizeof(struct ieee80211_frame);
+ int opmode = vap->iv_opmode;
+
+ if ((type & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_DATA) {
+ if ((opmode == IEEE80211_M_STA) &&
+ (vap->iv_flags_ext & IEEE80211_FEXT_WDS))
+ opmode = IEEE80211_M_WDS;
+
+ if (opmode == IEEE80211_M_WDS)
+ len = sizeof(struct ieee80211_frame_addr4);
+ }
+ wh = (struct ieee80211_frame *)skb_push(skb, len);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | type;
if ((type & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_DATA) {
- switch (vap->iv_opmode) {
+ switch (opmode) {
case IEEE80211_M_STA:
wh->i_fc[1] = IEEE80211_FC1_DIR_TODS;
IEEE80211_ADDR_COPY(wh->i_addr1, bssid);
@@ -395,6 +412,8 @@
*(__le16 *)&wh->i_seq[0] =
htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT);
ni->ni_txseqs[0]++;
+
+ return wh;
#undef WH4
}
@@ -416,9 +435,7 @@
SKB_CB(skb)->ni = ni;
- wh = (struct ieee80211_frame *)
- skb_push(skb, sizeof(struct ieee80211_frame));
- ieee80211_send_setup(vap, ni, wh,
+ wh = ieee80211_send_setup(vap, ni, skb,
IEEE80211_FC0_TYPE_MGT | type,
vap->iv_myaddr, ni->ni_macaddr, vap->iv_bssid);
/* XXX power management */
@@ -464,6 +481,9 @@
struct ieee80211_frame *wh;
u_int8_t *frm;
+ if (ni->ni_subif)
+ vap = ni->ni_subif;
+
skb = ieee80211_getmgtframe(&frm, 0);
if (skb == NULL) {
/* XXX debug msg */
@@ -472,9 +492,7 @@
return -ENOMEM;
}
- wh = (struct ieee80211_frame *)
- skb_push(skb, sizeof(struct ieee80211_frame));
- ieee80211_send_setup(vap, ni, wh,
+ wh = ieee80211_send_setup(vap, ni, skb,
IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_NODATA,
vap->iv_myaddr, ni->ni_macaddr, vap->iv_bssid);
/* NB: power management bit is never sent by an AP */
@@ -512,6 +530,7 @@
struct sk_buff *skb;
struct ieee80211_qosframe *qwh;
u_int8_t *frm;
+ u_int8_t *i_qos;
int tid;
skb = ieee80211_getmgtframe(&frm, 2);
@@ -523,11 +542,12 @@
SKB_CB(skb)->ni = ieee80211_ref_node(ni);
skb->priority = ac;
- qwh = (struct ieee80211_qosframe *)skb_push(skb, sizeof(struct ieee80211_qosframe));
- qwh = (struct ieee80211_qosframe *)skb->data;
+ /* grab a pointer to QoS control and also compensate for the header length
+ * difference between QoS and non-QoS frame */
+ i_qos = skb_push(skb, sizeof(struct ieee80211_qosframe) - sizeof(struct ieee80211_frame));
- ieee80211_send_setup(vap, ni, (struct ieee80211_frame *)qwh,
+ qwh = (struct ieee80211_qosframe *) ieee80211_send_setup(vap, ni, skb,
IEEE80211_FC0_TYPE_DATA,
vap->iv_myaddr, /* SA */
ni->ni_macaddr, /* DA */
@@ -541,10 +561,10 @@
/* map from access class/queue to 11e header priority value */
tid = WME_AC_TO_TID(ac);
- qwh->i_qos[0] = tid & IEEE80211_QOS_TID;
+ i_qos[0] = tid & IEEE80211_QOS_TID;
if (ic->ic_wme.wme_wmeChanParams.cap_wmeParams[ac].wmep_noackPolicy)
qwh->i_qos[0] |= (1 << IEEE80211_QOS_ACKPOLICY_S) & IEEE80211_QOS_ACKPOLICY;
- qwh->i_qos[1] = 0;
+ i_qos[1] = 0;
IEEE80211_NODE_STAT(ni, tx_data);
@@ -786,6 +806,8 @@
hdrsize = sizeof(struct ieee80211_frame);
SKB_CB(skb)->auth_pkt = (eh.ether_type == __constant_htons(ETHERTYPE_PAE));
@ -463,3 +744,57 @@
switch (vap->iv_opmode) {
case IEEE80211_M_IBSS:
@@ -805,20 +827,9 @@
ismulticast = IEEE80211_IS_MULTICAST(eh.ether_dhost);
break;
case IEEE80211_M_STA:
- if ((vap->iv_flags_ext & IEEE80211_FEXT_WDS) &&
- !IEEE80211_ADDR_EQ(eh.ether_shost, vap->iv_myaddr)) {
+ if (vap->iv_flags_ext & IEEE80211_FEXT_WDS) {
use4addr = 1;
- ismulticast = IEEE80211_IS_MULTICAST(ni->ni_macaddr);
- /* Add a WDS entry to the station VAP */
- if (IEEE80211_IS_MULTICAST(eh.ether_dhost)) {
- struct ieee80211_node_table *nt = &ic->ic_sta;
- struct ieee80211_node *ni_wds
- = ieee80211_find_wds_node(nt, eh.ether_shost);
- if (ni_wds)
- ieee80211_unref_node(&ni_wds);
- else
- ieee80211_add_wds_addr(nt, ni, eh.ether_shost, 0);
- }
+ ismulticast = 0;
} else
ismulticast = IEEE80211_IS_MULTICAST(vap->iv_bssid);
break;
@@ -1689,9 +1700,7 @@
SKB_CB(skb)->ni = ieee80211_ref_node(ni);
- wh = (struct ieee80211_frame *)
- skb_push(skb, sizeof(struct ieee80211_frame));
- ieee80211_send_setup(vap, ni, wh,
+ wh = ieee80211_send_setup(vap, ni, skb,
IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ,
sa, da, bssid);
/* XXX power management? */
--- a/net80211/ieee80211_linux.c
+++ b/net80211/ieee80211_linux.c
@@ -145,7 +145,7 @@
struct sk_buff *skb;
u_int len;
- len = roundup(sizeof(struct ieee80211_frame) + pktlen, 4);
+ len = roundup(sizeof(struct ieee80211_frame_addr4) + pktlen, 4);
#ifdef IEEE80211_DEBUG_REFCNT
skb = ieee80211_dev_alloc_skb_debug(len + align - 1, func, line);
#else
@@ -161,7 +161,7 @@
SKB_CB(skb)->flags = 0;
SKB_CB(skb)->next = NULL;
- skb_reserve(skb, sizeof(struct ieee80211_frame));
+ skb_reserve(skb, sizeof(struct ieee80211_frame_addr4));
*frm = skb_put(skb, pktlen);
}
return skb;

6
package/madwifi/patches/372-queue_vif.patch
View File

@ -1,6 +1,6 @@
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
@@ -1183,6 +1183,7 @@
@@ -1174,6 +1174,7 @@
}
if (skb1 != NULL) {
struct ieee80211_node *ni_tmp;
@ -8,7 +8,7 @@
skb1->dev = dev;
skb_reset_mac_header(skb1);
skb_set_network_header(skb1, sizeof(struct ether_header));
@@ -1190,7 +1191,12 @@
@@ -1181,7 +1182,12 @@
skb1->protocol = __constant_htons(ETH_P_802_2);
/* XXX insert vlan tag before queue it? */
ni_tmp = SKB_CB(skb1)->ni; /* remember node so we can free it */
@ -24,7 +24,7 @@
vap->iv_devstats.tx_dropped++;
--- a/net80211/ieee80211_output.c
+++ b/net80211/ieee80211_output.c
@@ -329,9 +329,10 @@
@@ -333,9 +333,10 @@
/* Dispatch the packet to the parent device */
skb->dev = vap->iv_ic->ic_dev;