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cfg80211: require add_virtual_intf to return new dev

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cfg80211 used to do all its bookkeeping in
the notifier, but some new stuff will have
to use local variables so make the callback
return the netdev pointer.

Tested-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2010-12-03 09:20:42 +01:00 committed by John W. Linville
parent 09b1747026
commit f9e10ce4cf
3 changed files with 24 additions and 14 deletions
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11
include/net/cfg80211.h
View file

@ -1033,7 +1033,8 @@ struct cfg80211_pmksa {
*
* @add_virtual_intf: create a new virtual interface with the given name,
* must set the struct wireless_dev's iftype. Beware: You must create
* the new netdev in the wiphy's network namespace!
* the new netdev in the wiphy's network namespace! Returns the netdev,
* or an ERR_PTR.
*
* @del_virtual_intf: remove the virtual interface determined by ifindex.
*
@ -1168,9 +1169,11 @@ struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy);
int (*resume)(struct wiphy *wiphy);
int (*add_virtual_intf)(struct wiphy *wiphy, char *name,
enum nl80211_iftype type, u32 *flags,
struct vif_params *params);
struct net_device * (*add_virtual_intf)(struct wiphy *wiphy,
char *name,
enum nl80211_iftype type,
u32 *flags,
struct vif_params *params);
int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev);
int (*change_virtual_intf)(struct wiphy *wiphy,
struct net_device *dev,

20
net/mac80211/cfg.c
View file

@ -19,9 +19,10 @@
#include "rate.h"
#include "mesh.h"
static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
enum nl80211_iftype type, u32 *flags,
struct vif_params *params)
static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
enum nl80211_iftype type,
u32 *flags,
struct vif_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct net_device *dev;
@ -29,12 +30,15 @@ static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
int err;
err = ieee80211_if_add(local, name, &dev, type, params);
if (err || type != NL80211_IFTYPE_MONITOR || !flags)
return err;
if (err)
return ERR_PTR(err);
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sdata->u.mntr_flags = *flags;
return 0;
if (type == NL80211_IFTYPE_MONITOR && flags) {
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sdata->u.mntr_flags = *flags;
}
return dev;
}
static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)

7
net/wireless/nl80211.c
View file

@ -1368,6 +1368,7 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
struct net_device *dev;
int err;
enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
u32 flags;
@ -1403,11 +1404,13 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
&flags);
err = rdev->ops->add_virtual_intf(&rdev->wiphy,
dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
nla_data(info->attrs[NL80211_ATTR_IFNAME]),
type, err ? NULL : &flags, &params);
if (IS_ERR(dev))
return PTR_ERR(dev);
return err;
return 0;
}
static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)