diff options
| author | Michal Kazior <michal.kazior@tieto.com> | 2012-06-29 10:47:07 (GMT) |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2012-06-29 11:39:19 (GMT) |
| commit | d4e50c5917e110451ced8f8de594cea858791f37 (patch) | |
| tree | 078ac36d0642114f90b57e50ef9b585e2f8a5be9 /net/wireless/core.c | |
| parent | 2e165b818456ecc1024dd0387eeac64745526377 (diff) | |
| download | linux-fsl-qoriq-d4e50c5917e110451ced8f8de594cea858791f37.tar.xz | |
cfg80211: add channel checking for iface combinations
.connect cannot be handled since the driver scans
and connects on its own. It is up to the driver
then to refuse a connection (with -EBUSY for
example).
Non-fixed channel IBSSes always take a single
channel resource. For example two non-fixed
channel IBSSes always take up 2
num_different_channels, even if they operate on
the same channel at a given point of time.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/core.c')
| -rw-r--r-- | net/wireless/core.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c index 580551e..b26695a 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -373,6 +373,14 @@ static int wiphy_verify_combinations(struct wiphy *wiphy) if (WARN_ON(!c->num_different_channels)) return -EINVAL; + /* + * Put a sane limit on maximum number of different + * channels to simplify channel accounting code. + */ + if (WARN_ON(c->num_different_channels > + CFG80211_MAX_NUM_DIFFERENT_CHANNELS)) + return -EINVAL; + if (WARN_ON(!c->n_limits)) return -EINVAL; |