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cfg80211: add P2P Device abstraction

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In order to support using a different MAC address
for the P2P Device address we must first have a
P2P Device abstraction that can be assigned a MAC
address.

This abstraction will also be useful to support
offloading P2P operations to the device, e.g.
periodic listen for discoverability.

Currently, the driver is responsible for assigning
a MAC address to the P2P Device, but this could be
changed by allowing a MAC address to be given to
the NEW_INTERFACE command.

As it has no associated netdev, a P2P Device can
only be identified by its wdev identifier but the
previous patches allowed using the wdev identifier
in various APIs, e.g. remain-on-channel.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2012-06-16 00:19:54 +02:00
parent cc74c0c7d6
commit 98104fdeda
9 changed files with 265 additions and 20 deletions
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18
net/wireless/util.c
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@@ -800,6 +800,10 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
if (otype == NL80211_IFTYPE_AP_VLAN)
return -EOPNOTSUPP;
/* cannot change into P2P device type */
if (ntype == NL80211_IFTYPE_P2P_DEVICE)
return -EOPNOTSUPP;
if (!rdev->ops->change_virtual_intf ||
!(rdev->wiphy.interface_modes & (1 << ntype)))
return -EOPNOTSUPP;
@@ -877,6 +881,9 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
case NUM_NL80211_IFTYPES:
/* not happening */
break;
case NL80211_IFTYPE_P2P_DEVICE:
WARN_ON(1);
break;
}
}
@@ -1041,8 +1048,15 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
list_for_each_entry(wdev_iter, &rdev->wdev_list, list) {
if (wdev_iter == wdev)
continue;
if (!netif_running(wdev_iter->netdev))
continue;
if (wdev_iter->netdev) {
if (!netif_running(wdev_iter->netdev))
continue;
} else if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) {
if (!wdev_iter->p2p_started)
continue;
} else {
WARN_ON(1);
}
if (rdev->wiphy.software_iftypes & BIT(wdev_iter->iftype))
continue;