wireless: Add channel/frequency conversions to ieee80211.h
Added mappings for FHSS, DSSS and OFDM channels - with macros to point
HR DSSS and ERP to the DSSS mappings. Currently just static inline
functions.
Use the new functions in the older fullmac drivers. This eliminates a
number of const static buffers and removes a couple of range checks that
are now redundant.
Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Richard Farina <sidhayn@gmail.com>
Acked-by: Jeroen Vreeken <pe1rxq@amsat.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/orinoco/orinoco.c b/drivers/net/wireless/orinoco/orinoco.c
index 45a04fa..beb4d1f 100644
--- a/drivers/net/wireless/orinoco/orinoco.c
+++ b/drivers/net/wireless/orinoco/orinoco.c
@@ -178,12 +178,7 @@
/* Data tables */
/********************************************************************/
-/* The frequency of each channel in MHz */
-static const long channel_frequency[] = {
- 2412, 2417, 2422, 2427, 2432, 2437, 2442,
- 2447, 2452, 2457, 2462, 2467, 2472, 2484
-};
-#define NUM_CHANNELS ARRAY_SIZE(channel_frequency)
+#define NUM_CHANNELS 14
/* This tables gives the actual meanings of the bitrate IDs returned
* by the firmware. */
@@ -3742,13 +3737,13 @@
return err;
}
-static long orinoco_hw_get_freq(struct orinoco_private *priv)
+static int orinoco_hw_get_freq(struct orinoco_private *priv)
{
hermes_t *hw = &priv->hw;
int err = 0;
u16 channel;
- long freq = 0;
+ int freq = 0;
unsigned long flags;
if (orinoco_lock(priv, &flags) != 0)
@@ -3771,7 +3766,7 @@
goto out;
}
- freq = channel_frequency[channel-1] * 100000;
+ freq = ieee80211_dsss_chan_to_freq(channel);
out:
orinoco_unlock(priv, &flags);
@@ -3998,7 +3993,8 @@
for (i = 0; i < NUM_CHANNELS; i++) {
if (priv->channel_mask & (1 << i)) {
range->freq[k].i = i + 1;
- range->freq[k].m = channel_frequency[i] * 100000;
+ range->freq[k].m = (ieee80211_dsss_chan_to_freq(i + 1) *
+ 100000);
range->freq[k].e = 1;
k++;
}
@@ -4346,16 +4342,15 @@
/* Setting by channel number */
chan = frq->m;
} else {
- /* Setting by frequency - search the table */
- int mult = 1;
+ /* Setting by frequency */
+ int denom = 1;
int i;
+ /* Calculate denominator to rescale to MHz */
for (i = 0; i < (6 - frq->e); i++)
- mult *= 10;
+ denom *= 10;
- for (i = 0; i < NUM_CHANNELS; i++)
- if (frq->m == (channel_frequency[i] * mult))
- chan = i+1;
+ chan = ieee80211_freq_to_dsss_chan(frq->m / denom);
}
if ( (chan < 1) || (chan > NUM_CHANNELS) ||
@@ -4392,7 +4387,7 @@
return tmp;
}
- frq->m = tmp;
+ frq->m = tmp * 100000;
frq->e = 1;
return 0;
@@ -5609,7 +5604,7 @@
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
&iwe, IW_EV_FREQ_LEN);
- iwe.u.freq.m = channel_frequency[channel-1] * 100000;
+ iwe.u.freq.m = ieee80211_dsss_chan_to_freq(channel) * 100000;
iwe.u.freq.e = 1;
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
&iwe, IW_EV_FREQ_LEN);
@@ -5760,7 +5755,7 @@
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
&iwe, IW_EV_FREQ_LEN);
- iwe.u.freq.m = channel_frequency[channel-1] * 100000;
+ iwe.u.freq.m = ieee80211_dsss_chan_to_freq(channel) * 100000;
iwe.u.freq.e = 1;
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
&iwe, IW_EV_FREQ_LEN);