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o assert TDMA_MAXSLOTS is 2 so noone tries to blindly increase it

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o add safety belt in vdetach for failed state block allocation
o fix dynamic change to tdma config; ERESTART may not result in
  kicking the state machine so we need to explicitly mark the
  beacon for update

Sponsored by:
This commit is contained in:
Sam Leffler 2009-05-30 19:57:31 +00:00
parent dd2b024a33
commit 39c3faaf70
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=193114
1 changed files with 17 additions and 4 deletions
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21
sys/net80211/ieee80211_tdma.c
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@ -104,6 +104,11 @@ __FBSDID("$FreeBSD$");
/* XXX probably should set a max */
#define TDMA_BINTVAL_VALID(_bintval) (1 <= (_bintval))
/*
* This code is not prepared to handle more than 2 slots.
*/
CTASSERT(TDMA_MAXSLOTS == 2);
static void tdma_vdetach(struct ieee80211vap *vap);
static int tdma_newstate(struct ieee80211vap *, enum ieee80211_state, int);
static void tdma_beacon_miss(struct ieee80211vap *vap);
@ -187,8 +192,13 @@ tdma_vdetach(struct ieee80211vap *vap)
{
struct ieee80211_tdma_state *ts = vap->iv_tdma;
if (ts == NULL) {
/* NB: should not have touched any ic state */
return;
}
ts->tdma_opdetach(vap);
free(vap->iv_tdma, M_80211_VAP);
vap->iv_tdma = NULL;
setackpolicy(vap->iv_ic, 0); /* enable ACK's */
}
@ -764,7 +774,7 @@ tdma_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
return EINVAL;
if (ireq->i_val != ts->tdma_slot) {
ts->tdma_slot = ireq->i_val;
return ERESTART;
goto restart;
}
break;
case IEEE80211_IOC_TDMA_SLOTCNT:
@ -772,7 +782,7 @@ tdma_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
return EINVAL;
if (ireq->i_val != ts->tdma_slotcnt) {
ts->tdma_slotcnt = ireq->i_val;
return ERESTART;
goto restart;
}
break;
case IEEE80211_IOC_TDMA_SLOTLEN:
@ -786,7 +796,7 @@ tdma_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
return EINVAL;
if (ireq->i_val != ts->tdma_slotlen) {
ts->tdma_slotlen = ireq->i_val;
return ERESTART;
goto restart;
}
break;
case IEEE80211_IOC_TDMA_BINTERVAL:
@ -794,12 +804,15 @@ tdma_ioctl_set80211(struct ieee80211vap *vap, struct ieee80211req *ireq)
return EINVAL;
if (ireq->i_val != ts->tdma_bintval) {
ts->tdma_bintval = ireq->i_val;
return ERESTART;
goto restart;
}
break;
default:
return ENOSYS;
}
return 0;
restart:
ieee80211_beacon_notify(vap, IEEE80211_BEACON_TDMA);
return ERESTART;
}
IEEE80211_IOCTL_SET(tdma, tdma_ioctl_set80211);