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Various iwn(4) fixes.

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* simplify channel logic for determining RF gain setting in scan setup
* don't set TX timer on error
* free node references for unsent frames on device stop
* set maxfrags to IWN_MAX_SCATTER-1 (first segment is used by TX command)
* add missing IWN_UNLOCK() from interrupt path when the hardware
  disappears.
* pass control frames to host
* nitems() instead of local macro

Tested:

* Intel 5100, STA mode

PR:		kern/196264
Submitted by:	Andriy Voskoboinyk <s3erios@gmail.com>
This commit is contained in:
Adrian Chadd 2015-05-16 05:59:25 +00:00
parent 0e4ebe6c4d
commit 64b9bdcf18
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=282999
1 changed files with 22 additions and 22 deletions
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44
sys/dev/iwn/if_iwn.c
View File

@ -1875,7 +1875,7 @@ iwn_alloc_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring)
&paddr, BUS_DMA_NOWAIT);
if (error != 0 && error != EFBIG) {
device_printf(sc->sc_dev,
"%s: can't not map mbuf, error %d\n", __func__,
"%s: can't map mbuf, error %d\n", __func__,
error);
goto fail;
}
@ -2036,6 +2036,10 @@ iwn_reset_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring)
m_freem(data->m);
data->m = NULL;
}
if (data->ni != NULL) {
ieee80211_free_node(data->ni);
data->ni = NULL;
}
}
/* Clear TX descriptors. */
memset(ring->desc, 0, ring->desc_dma.size);
@ -2969,7 +2973,7 @@ iwn_rx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
return;
}
/* Discard frames that are too short. */
if (len < sizeof (*wh)) {
if (len < sizeof (struct ieee80211_frame_ack)) {
DPRINTF(sc, IWN_DEBUG_RECV, "%s: frame too short: %d\n",
__func__, len);
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
@ -3021,7 +3025,10 @@ iwn_rx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc,
/* Grab a reference to the source node. */
wh = mtod(m, struct ieee80211_frame *);
ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
if (len >= sizeof(struct ieee80211_frame_min))
ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
else
ni = NULL;
nf = (ni != NULL && ni->ni_vap->iv_state == IEEE80211_S_RUN &&
(ic->ic_flags & IEEE80211_F_SCAN) == 0) ? sc->noise : -95;
@ -4047,8 +4054,10 @@ iwn_intr(void *arg)
r2 = 0; /* Unused. */
} else {
r1 = IWN_READ(sc, IWN_INT);
if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0)
if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) {
IWN_UNLOCK(sc);
return; /* Hardware gone! */
}
r2 = IWN_READ(sc, IWN_FH_INT);
}
@ -4519,7 +4528,7 @@ iwn_tx_data(struct iwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
return error;
}
/* Too many DMA segments, linearize mbuf. */
m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER);
m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER - 1);
if (m1 == NULL) {
device_printf(sc->sc_dev,
"%s: could not defrag mbuf\n", __func__);
@ -4725,7 +4734,7 @@ iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m,
return error;
}
/* Too many DMA segments, linearize mbuf. */
m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER);
m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER - 1);
if (m1 == NULL) {
device_printf(sc->sc_dev,
"%s: could not defrag mbuf\n", __func__);
@ -4825,8 +4834,8 @@ iwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
/* NB: m is reclaimed on tx failure */
ieee80211_free_node(ni);
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
}
sc->sc_tx_timer = 5;
} else
sc->sc_tx_timer = 5;
IWN_UNLOCK(sc);
@ -4872,9 +4881,8 @@ iwn_start_locked(struct ifnet *ifp)
if (iwn_tx_data(sc, m, ni) != 0) {
ieee80211_free_node(ni);
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
continue;
}
sc->sc_tx_timer = 5;
} else
sc->sc_tx_timer = 5;
}
DPRINTF(sc, IWN_DEBUG_XMIT, "%s: done\n", __func__);
@ -4950,7 +4958,6 @@ iwn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
IWN_LOCK(sc);
memset(&sc->last_stat, 0, sizeof(struct iwn_stats));
IWN_UNLOCK(sc);
error = 0;
break;
default:
error = EINVAL;
@ -6818,16 +6825,10 @@ iwn_scan(struct iwn_softc *sc, struct ieee80211vap *vap,
chan->active = htole16(dwell_active);
chan->passive = htole16(dwell_passive);
if (IEEE80211_IS_CHAN_5GHZ(c) &&
!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
if (IEEE80211_IS_CHAN_5GHZ(c))
chan->rf_gain = 0x3b;
} else if (IEEE80211_IS_CHAN_5GHZ(c)) {
chan->rf_gain = 0x3b;
} else if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
else
chan->rf_gain = 0x28;
} else {
chan->rf_gain = 0x28;
}
DPRINTF(sc, IWN_DEBUG_STATE,
"%s: chan %u flags 0x%x rf_gain 0x%x "
@ -8809,7 +8810,6 @@ iwn_hw_reset(void *arg0, int pending)
}
#ifdef IWN_DEBUG
#define IWN_DESC(x) case x: return #x
#define COUNTOF(array) (sizeof(array) / sizeof(array[0]))
/*
* Translate CSR code to string
@ -8880,7 +8880,7 @@ iwn_debug_register(struct iwn_softc *sc)
DPRINTF(sc, IWN_DEBUG_REGISTER,
"CSR values: (2nd byte of IWN_INT_COALESCING is IWN_INT_PERIODIC)%s",
"\n");
for (i = 0; i < COUNTOF(csr_tbl); i++){
for (i = 0; i < nitems(csr_tbl); i++){
DPRINTF(sc, IWN_DEBUG_REGISTER," %10s: 0x%08x ",
iwn_get_csr_string(csr_tbl[i]), IWN_READ(sc, csr_tbl[i]));
if ((i+1) % 3 == 0)