/*
* Age frames on the power save queue. The aging interval is
* 4 times the listen interval specified by the station. This
* number is factored into the age calculations when the frame
* is placed on the queue. We store ages as time differences
* so we can check and/or adjust only the head of the list.
* If a frame's age exceeds the threshold then discard it.
* The number of frames discarded is returned so the caller
* can check if it needs to adjust the tim.
*/
int
ieee80211_node_saveq_age(struct ieee80211_node *ni)
{
int discard = 0;
struct node_powersave_queue *dataq,*mgtq;
struct ieee80211vap *vap=ni->ni_vap;
dataq = IEEE80211_NODE_SAVEQ_DATAQ(ni);
mgtq = IEEE80211_NODE_SAVEQ_MGMTQ(ni);
/* XXX racey but good 'nuf? */
if ((IEEE80211_NODE_SAVEQ_QLEN(dataq) != 0) ||
(IEEE80211_NODE_SAVEQ_QLEN(mgtq) != 0)) {
wbuf_t wbuf;
IEEE80211_NODE_SAVEQ_LOCK(dataq);
while (IEEE80211_NODE_SAVEQ_POLL(dataq, wbuf) != NULL &&
wbuf_get_age(wbuf) < IEEE80211_INACT_WAIT) {
struct ieee80211_tx_status ts;
ts.ts_flags = IEEE80211_TX_ERROR;
IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
"discard frame, age %u \n", wbuf_get_age(wbuf));
IEEE80211_NODE_SAVEQ_DEQUEUE(dataq, wbuf);
ieee80211_release_wbuf(ni,wbuf, &ts);
discard++;
}
if (wbuf != NULL)
wbuf_set_age(wbuf, wbuf_get_age(wbuf) - IEEE80211_INACT_WAIT);
IEEE80211_NODE_SAVEQ_UNLOCK(dataq);
IEEE80211_NODE_SAVEQ_LOCK(mgtq);
while (IEEE80211_NODE_SAVEQ_POLL(mgtq, wbuf) != NULL &&
wbuf_get_age(wbuf) < IEEE80211_INACT_WAIT) {
struct ieee80211_tx_status ts;
ts.ts_flags = IEEE80211_TX_ERROR;
IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
"discard mgt frame, age %u \n", wbuf_get_age(wbuf));
IEEE80211_NODE_SAVEQ_DEQUEUE(mgtq, wbuf);
ieee80211_release_wbuf(ni,wbuf, &ts);
discard++;
}
if (wbuf != NULL)
wbuf_set_age(wbuf, wbuf_get_age(wbuf) - IEEE80211_INACT_WAIT);
IEEE80211_NODE_SAVEQ_UNLOCK(mgtq);
IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
"discard %u frames for age \n", discard);
IEEE80211_NODE_STAT_ADD(ni, ps_discard, discard);
}
if ((IEEE80211_NODE_SAVEQ_QLEN(dataq) == 0) &&
(IEEE80211_NODE_SAVEQ_QLEN(mgtq) == 0)) {
if (vap->iv_set_tim != NULL)
vap->iv_set_tim(ni, 0);
}
return discard;
}
/*
* Age frames on the power save queue. The aging interval is
* 4 times the listen interval specified by the station. This
* number is factored into the age calculations when the frame
* is placed on the queue. We store ages as time differences
* so we can check and/or adjust only the head of the list.
* If a frame's age exceeds the threshold then discard it.
* The number of frames discarded is returned so the caller
* can check if it needs to adjust the tim.
*/
int
ieee80211_node_saveq_age(struct ieee80211_node *ni)
{
int discard = 0;
struct node_powersave_queue *dataq,*mgtq;
struct ieee80211vap *vap=ni->ni_vap;
#if LMAC_SUPPORT_POWERSAVE_QUEUE
struct ieee80211com *ic = ni->ni_ic;
ic->ic_node_pwrsaveq_age(ic, ni);
if (ic->ic_get_lmac_pwrsaveq_len(ic, ni, 0) == 0 && vap->iv_set_tim != NULL) {
vap->iv_set_tim(ni, 0, false);
}
return 0;
#endif
dataq = IEEE80211_NODE_SAVEQ_DATAQ(ni);
mgtq = IEEE80211_NODE_SAVEQ_MGMTQ(ni);
/* XXX racey but good 'nuf? */
if ((IEEE80211_NODE_SAVEQ_QLEN(dataq) != 0) ||
(IEEE80211_NODE_SAVEQ_QLEN(mgtq) != 0)) {
wbuf_t wbuf;
IEEE80211_NODE_SAVEQ_LOCK(dataq);
while (IEEE80211_NODE_SAVEQ_POLL(dataq, wbuf) != NULL &&
wbuf_get_age(wbuf) < IEEE80211_INACT_WAIT) {
struct ieee80211_tx_status ts;
ts.ts_flags = IEEE80211_TX_ERROR;
IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
"discard frame, age %u \n", wbuf_get_age(wbuf));
IEEE80211_NODE_SAVEQ_DEQUEUE(dataq, wbuf);
ieee80211_release_wbuf(ni,wbuf, &ts);
discard++;
}
if (wbuf != NULL)
wbuf_set_age(wbuf, wbuf_get_age(wbuf) - IEEE80211_INACT_WAIT);
IEEE80211_NODE_SAVEQ_UNLOCK(dataq);
IEEE80211_NODE_SAVEQ_LOCK(mgtq);
while (IEEE80211_NODE_SAVEQ_POLL(mgtq, wbuf) != NULL &&
wbuf_get_age(wbuf) < IEEE80211_INACT_WAIT) {
struct ieee80211_tx_status ts;
ts.ts_flags = IEEE80211_TX_ERROR;
IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
"discard mgt frame, age %u \n", wbuf_get_age(wbuf));
IEEE80211_NODE_SAVEQ_DEQUEUE(mgtq, wbuf);
ieee80211_release_wbuf(ni,wbuf, &ts);
discard++;
}
if (wbuf != NULL)
wbuf_set_age(wbuf, wbuf_get_age(wbuf) - IEEE80211_INACT_WAIT);
IEEE80211_NODE_SAVEQ_UNLOCK(mgtq);
IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
"discard %u frames for age \n", discard);
IEEE80211_NODE_STAT_ADD(ni, ps_discard, discard);
}
if ((IEEE80211_NODE_SAVEQ_QLEN(dataq) == 0) &&
(IEEE80211_NODE_SAVEQ_QLEN(mgtq) == 0)) {
#ifdef ATH_SWRETRY
/* also check whether there is frame in tid q */
if (vap->iv_set_tim != NULL && (ni->ni_ic)->ic_exist_pendingfrm_tidq(ni->ni_ic, ni) !=0)
#else
if (vap->iv_set_tim != NULL)
#endif
vap->iv_set_tim(ni, 0, false);
}
return discard;
}
