1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
diff -ur madwifi.old/ath/if_ath.c madwifi.dev/ath/if_ath.c
--- madwifi.old/ath/if_ath.c 2007-05-15 16:26:02.721036296 +0200
+++ madwifi.dev/ath/if_ath.c 2007-05-16 15:43:23.095362056 +0200
@@ -1711,6 +1711,7 @@
}
#endif
ATH_SCHEDULE_TQUEUE(&sc->sc_txtq, &needmark);
+ sc->sc_tx_start = 0;
}
if (status & HAL_INT_BMISS) {
sc->sc_stats.ast_bmiss++;
@@ -2261,6 +2262,25 @@
txq->axq_link = &lastds->ds_link;
ath_hal_txstart(ah, txq->axq_qnum);
sc->sc_dev->trans_start = jiffies;
+ if ((sc->sc_opmode == HAL_M_IBSS) || (sc->sc_opmode == HAL_M_HOSTAP)) {
+ unsigned long last;
+ ATH_LOCK(sc);
+ last = sc->sc_tx_start;
+ ATH_UNLOCK(sc);
+ if (last) {
+ if (jiffies > last + 2 * HZ) {
+ printk("%s: Tx queue stuck. Resetting hardware...\n", sc->sc_dev->name);
+ ath_reset(sc->sc_dev);
+ ATH_LOCK(sc);
+ sc->sc_tx_start = 0;
+ ATH_UNLOCK(sc);
+ }
+ } else {
+ ATH_LOCK(sc);
+ sc->sc_tx_start = jiffies;
+ ATH_UNLOCK(sc);
+ }
+ }
}
ATH_TXQ_UNLOCK(txq);
@@ -7289,6 +7309,10 @@
break;
}
+ ATH_LOCK(sc);
+ sc->sc_tx_start = 0;
+ ATH_UNLOCK(sc);
+
#ifdef ATH_SUPERG_FF
ds = &bf->bf_desc[bf->bf_numdescff];
DPRINTF(sc, ATH_DEBUG_TX_PROC, "%s: frame's last desc: %p\n",
diff -ur madwifi.old/ath/if_athvar.h madwifi.dev/ath/if_athvar.h
--- madwifi.old/ath/if_athvar.h 2007-05-04 23:09:29.000000000 +0200
+++ madwifi.dev/ath/if_athvar.h 2007-05-15 16:26:28.911054808 +0200
@@ -689,6 +689,14 @@
#endif
u_int sc_slottimeconf; /* manual override for slottime */
int16_t sc_channoise; /* Measured noise of current channel (dBm) */
+
+ /*
+ * Several MiniPCI cards and most SoC revs frequently cease all transmission
+ * when operating in IBSS mode. The reason for this is unknown and could potentially
+ * be a hardware bug. This variable contains the timestamp of the last successful
+ * transmission and is checked when enqueueing new frames
+ */
+ unsigned long sc_tx_start;
};
typedef void (*ath_callback) (struct ath_softc *);
|
