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authorMarcel Holtmann <marcel@holtmann.org>2009-08-31 21:08:19 +0000
committerDavid S. Miller <davem@davemloft.net>2009-09-11 12:54:55 -0700
commit384912ed194e43c03ad1cdaa09b0b1e488c34d46 (patch)
treebdaae15252819543cff0900941238d2b99bb2300 /net/mac80211
parentf510c35de0e63e1066db83d2fdce99e6dbde0c80 (diff)
downloadop-kernel-dev-384912ed194e43c03ad1cdaa09b0b1e488c34d46.zip
op-kernel-dev-384912ed194e43c03ad1cdaa09b0b1e488c34d46.tar.gz
net: Add DEVTYPE support for Ethernet based devices
The Ethernet framing is used for a lot of devices these days. Most prominent are WiFi and WiMAX based devices. However for userspace application it is important to classify these devices correctly and not only see them as Ethernet devices. The daemons like HAL, DeviceKit or even NetworkManager with udev support tries to do the classification in userspace with a lot trickery and extra system calls. This is not good and actually reaches its limitations. Especially since the kernel does know the type of the Ethernet device it is pretty stupid. To solve this problem the underlying device type needs to be set and then the value will be exported as DEVTYPE via uevents and available within udev. # cat /sys/class/net/wlan0/uevent DEVTYPE=wlan INTERFACE=wlan0 IFINDEX=5 This is similar to subsystems like USB and SCSI that distinguish between hosts, devices, disks, partitions etc. The new SET_NETDEV_DEVTYPE() is a convenience helper to set the actual device type. All device types are free form, but for convenience the same strings as used with RFKILL are choosen. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/iface.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index f6005ad..b8295cb 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -754,6 +754,10 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
return 0;
}
+static struct device_type wiphy_type = {
+ .name = "wlan",
+};
+
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
struct net_device **new_dev, enum nl80211_iftype type,
struct vif_params *params)
@@ -785,6 +789,7 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
+ SET_NETDEV_DEVTYPE(ndev, &wiphy_type);
/* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */
sdata = netdev_priv(ndev);
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