{
/* see 802.11 17.3.8.3.2 and Annex J
* there are overlapping channel numbers in 5GHz and 2GHz bands */
- if (band == IEEE80211_BAND_5GHZ) {
- if (chan >= 182 && chan <= 196)
- return 4000 + chan * 5;
- else
- return 5000 + chan * 5;
- } else { /* IEEE80211_BAND_2GHZ */
+ if (chan <= 0)
+ return 0; /* not supported */
+ switch (band) {
+ case IEEE80211_BAND_2GHZ:
if (chan == 14)
return 2484;
else if (chan < 14)
return 2407 + chan * 5;
+ break;
+ case IEEE80211_BAND_5GHZ:
+ if (chan >= 182 && chan <= 196)
+ return 4000 + chan * 5;
else
- return 0; /* not supported */
+ return 5000 + chan * 5;
+ break;
+ case IEEE80211_BAND_60GHZ:
+ if (chan < 5)
+ return 56160 + chan * 2160;
+ break;
+ default:
+ ;
}
+ return 0; /* not supported */
}
EXPORT_SYMBOL(ieee80211_channel_to_frequency);
return (freq - 2407) / 5;
else if (freq >= 4910 && freq <= 4980)
return (freq - 4000) / 5;
- else
+ else if (freq <= 45000) /* DMG band lower limit */
return (freq - 5000) / 5;
+ else if (freq >= 58320 && freq <= 64800)
+ return (freq - 56160) / 2160;
+ else
+ return 0;
}
EXPORT_SYMBOL(ieee80211_frequency_to_channel);
}
WARN_ON(want != 0 && want != 3 && want != 6);
break;
+ case IEEE80211_BAND_60GHZ:
+ /* check for mandatory HT MCS 1..4 */
+ WARN_ON(!sband->ht_cap.ht_supported);
+ WARN_ON((sband->ht_cap.mcs.rx_mask[0] & 0x1e) != 0x1e);
+ break;
case IEEE80211_NUM_BANDS:
WARN_ON(1);
break;
ntype == NL80211_IFTYPE_P2P_CLIENT))
return -EBUSY;
- if (ntype != otype) {
+ if (ntype != otype && netif_running(dev)) {
+ mutex_lock(&rdev->devlist_mtx);
err = cfg80211_can_change_interface(rdev, dev->ieee80211_ptr,
ntype);
+ mutex_unlock(&rdev->devlist_mtx);
if (err)
return err;
dev->ieee80211_ptr->mesh_id_up_len = 0;
switch (otype) {
+ case NL80211_IFTYPE_AP:
+ cfg80211_stop_ap(rdev, dev);
+ break;
case NL80211_IFTYPE_ADHOC:
cfg80211_leave_ibss(rdev, dev, false);
break;
}
}
+ if (!err && ntype != otype && netif_running(dev)) {
+ cfg80211_update_iface_num(rdev, ntype, 1);
+ cfg80211_update_iface_num(rdev, otype, -1);
+ }
+
return err;
}
return res;
}
-int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
- struct wireless_dev *wdev,
- enum nl80211_iftype iftype)
+int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ enum nl80211_iftype iftype,
+ struct ieee80211_channel *chan,
+ enum cfg80211_chan_mode chanmode)
{
struct wireless_dev *wdev_iter;
+ u32 used_iftypes = BIT(iftype);
int num[NUM_NL80211_IFTYPES];
+ struct ieee80211_channel
+ *used_channels[CFG80211_MAX_NUM_DIFFERENT_CHANNELS];
+ struct ieee80211_channel *ch;
+ enum cfg80211_chan_mode chmode;
+ int num_different_channels = 0;
int total = 1;
int i, j;
ASSERT_RTNL();
+ lockdep_assert_held(&rdev->devlist_mtx);
/* Always allow software iftypes */
if (rdev->wiphy.software_iftypes & BIT(iftype))
return 0;
memset(num, 0, sizeof(num));
+ memset(used_channels, 0, sizeof(used_channels));
num[iftype] = 1;
- mutex_lock(&rdev->devlist_mtx);
+ switch (chanmode) {
+ case CHAN_MODE_UNDEFINED:
+ break;
+ case CHAN_MODE_SHARED:
+ WARN_ON(!chan);
+ used_channels[0] = chan;
+ num_different_channels++;
+ break;
+ case CHAN_MODE_EXCLUSIVE:
+ num_different_channels++;
+ break;
+ }
+
list_for_each_entry(wdev_iter, &rdev->netdev_list, list) {
if (wdev_iter == wdev)
continue;
if (rdev->wiphy.software_iftypes & BIT(wdev_iter->iftype))
continue;
+ cfg80211_get_chan_state(rdev, wdev_iter, &ch, &chmode);
+
+ switch (chmode) {
+ case CHAN_MODE_UNDEFINED:
+ break;
+ case CHAN_MODE_SHARED:
+ for (i = 0; i < CFG80211_MAX_NUM_DIFFERENT_CHANNELS; i++)
+ if (!used_channels[i] || used_channels[i] == ch)
+ break;
+
+ if (i == CFG80211_MAX_NUM_DIFFERENT_CHANNELS)
+ return -EBUSY;
+
+ if (used_channels[i] == NULL) {
+ used_channels[i] = ch;
+ num_different_channels++;
+ }
+ break;
+ case CHAN_MODE_EXCLUSIVE:
+ num_different_channels++;
+ break;
+ }
+
num[wdev_iter->iftype]++;
total++;
+ used_iftypes |= BIT(wdev_iter->iftype);
}
- mutex_unlock(&rdev->devlist_mtx);
if (total == 1)
return 0;
for (i = 0; i < rdev->wiphy.n_iface_combinations; i++) {
const struct ieee80211_iface_combination *c;
struct ieee80211_iface_limit *limits;
+ u32 all_iftypes = 0;
c = &rdev->wiphy.iface_combinations[i];
+ if (total > c->max_interfaces)
+ continue;
+ if (num_different_channels > c->num_different_channels)
+ continue;
+
limits = kmemdup(c->limits, sizeof(limits[0]) * c->n_limits,
GFP_KERNEL);
if (!limits)
return -ENOMEM;
- if (total > c->max_interfaces)
- goto cont;
for (iftype = 0; iftype < NUM_NL80211_IFTYPES; iftype++) {
if (rdev->wiphy.software_iftypes & BIT(iftype))
continue;
for (j = 0; j < c->n_limits; j++) {
+ all_iftypes |= limits[j].types;
if (!(limits[j].types & BIT(iftype)))
continue;
if (limits[j].max < num[iftype])
limits[j].max -= num[iftype];
}
}
- /* yay, it fits */
+
+ /*
+ * Finally check that all iftypes that we're currently
+ * using are actually part of this combination. If they
+ * aren't then we can't use this combination and have
+ * to continue to the next.
+ */
+ if ((all_iftypes & used_iftypes) != used_iftypes)
+ goto cont;
+
+ /*
+ * This combination covered all interface types and
+ * supported the requested numbers, so we're good.
+ */
kfree(limits);
return 0;
cont:
projects / deliverable / linux.git / blobdiff