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authorLuciano Coelho <luciano.coelho@intel.com>2014-02-27 11:07:21 +0200
committerJohannes Berg <johannes.berg@intel.com>2014-04-09 10:55:47 +0200
commitb6a550156bc08a472c9d2515631649e229fcfcef (patch)
treee47650bdbadff71e05f76c7b8e3a490347efffcd /net
parent71965c1d04b2b48ab7c56395bd1f996a56aaa592 (diff)
downloadlinux-sh-b6a550156bc08a472c9d2515631649e229fcfcef.tar.gz
cfg80211/mac80211: move more combination checks to mac80211
Get rid of the cfg80211_can_add_interface() and cfg80211_can_change_interface() functions by moving that functionality to mac80211. With this patch all interface combination checks are now out of cfg80211 (except for the channel switch case which will be addressed in a future commit). Additionally, modify the ieee80211_check_combinations() function so that an undefined chandef can be passed, in order to use it before a channel is defined. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/cfg.c9
-rw-r--r--net/mac80211/iface.c6
-rw-r--r--net/mac80211/util.c10
-rw-r--r--net/wireless/core.c11
-rw-r--r--net/wireless/core.h22
-rw-r--r--net/wireless/nl80211.c5
-rw-r--r--net/wireless/util.c5
7 files changed, 26 insertions, 42 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 8bf94eaa0456..23d60110aebd 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -109,6 +109,15 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
static int ieee80211_start_p2p_device(struct wiphy *wiphy,
struct wireless_dev *wdev)
{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
+ int ret;
+
+ mutex_lock(&sdata->local->chanctx_mtx);
+ ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
+ mutex_unlock(&sdata->local->chanctx_mtx);
+ if (ret < 0)
+ return ret;
+
return ieee80211_do_open(wdev, true);
}
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 4826c8f5d0b2..ad5badd783d8 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -250,6 +250,7 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_sub_if_data *nsdata;
+ int ret;
ASSERT_RTNL();
@@ -300,7 +301,10 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata,
}
}
- return 0;
+ mutex_lock(&local->chanctx_mtx);
+ ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
+ mutex_unlock(&local->chanctx_mtx);
+ return ret;
}
static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 436f98870066..5a6cc3382ae9 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2808,7 +2808,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
enum nl80211_iftype iftype = sdata->wdev.iftype;
int num[NUM_NL80211_IFTYPES];
struct ieee80211_chanctx *ctx;
- int num_different_channels = 1;
+ int num_different_channels = 0;
int total = 1;
lockdep_assert_held(&local->chanctx_mtx);
@@ -2816,9 +2816,13 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
if (WARN_ON(hweight32(radar_detect) > 1))
return -EINVAL;
- if (WARN_ON(chanmode == IEEE80211_CHANCTX_SHARED && !chandef->chan))
+ if (WARN_ON(chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
+ !chandef->chan))
return -EINVAL;
+ if (chandef)
+ num_different_channels = 1;
+
if (WARN_ON(iftype >= NUM_NL80211_IFTYPES))
return -EINVAL;
@@ -2841,7 +2845,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
num_different_channels++;
continue;
}
- if ((chanmode == IEEE80211_CHANCTX_SHARED) &&
+ if (chandef && chanmode == IEEE80211_CHANCTX_SHARED &&
cfg80211_chandef_compatible(chandef,
&ctx->conf.def))
continue;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 5a63c3cbda2e..33d12e23771c 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -439,10 +439,7 @@ static int wiphy_verify_combinations(struct wiphy *wiphy)
for (j = 0; j < c->n_limits; j++) {
u16 types = c->limits[j].types;
- /*
- * interface types shouldn't overlap, this is
- * used in cfg80211_can_change_interface()
- */
+ /* interface types shouldn't overlap */
if (WARN_ON(types & all_iftypes))
return -EINVAL;
all_iftypes |= types;
@@ -840,7 +837,6 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev;
- int ret;
if (!wdev)
return NOTIFY_DONE;
@@ -1003,9 +999,8 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
case NETDEV_PRE_UP:
if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)))
return notifier_from_errno(-EOPNOTSUPP);
- ret = cfg80211_can_add_interface(rdev, wdev->iftype);
- if (ret)
- return notifier_from_errno(ret);
+ if (rfkill_blocked(rdev->rfkill))
+ return notifier_from_errno(-ERFKILL);
break;
}
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 6684c5d965d8..5bee6cc94b21 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -412,28 +412,6 @@ unsigned int
cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
const struct cfg80211_chan_def *chandef);
-static inline int
-cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
- struct wireless_dev *wdev,
- enum nl80211_iftype iftype)
-{
- /* TODO: For this function, we'll probably need to keep some
- * kind of interface combination check in cfg80211...
- */
- return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
- CHAN_MODE_UNDEFINED, 0);
-}
-
-static inline int
-cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
- enum nl80211_iftype iftype)
-{
- if (rfkill_blocked(rdev->rfkill))
- return -ERFKILL;
-
- return cfg80211_can_change_interface(rdev, NULL, iftype);
-}
-
static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
{
unsigned long end = jiffies;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 2b99aad33ae0..232d15c0ac6e 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8969,9 +8969,8 @@ static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
if (wdev->p2p_started)
return 0;
- err = cfg80211_can_add_interface(rdev, wdev->iftype);
- if (err)
- return err;
+ if (rfkill_blocked(rdev->rfkill))
+ return -ERFKILL;
err = rdev_start_p2p_device(rdev, wdev);
if (err)
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 9bfc4c621509..5433659a08ee 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -888,11 +888,6 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
return -EBUSY;
if (ntype != otype && netif_running(dev)) {
- err = cfg80211_can_change_interface(rdev, dev->ieee80211_ptr,
- ntype);
- if (err)
- return err;
-
dev->ieee80211_ptr->use_4addr = false;
dev->ieee80211_ptr->mesh_id_up_len = 0;
wdev_lock(dev->ieee80211_ptr);