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| author | Manikanta Pubbisetty <mpubbise@codeaurora.org> | 2019-07-22 12:44:50 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-16 08:21:42 +0200 |
| commit | 1aa38eceb6c006a8bb96f2922cab5d03131d9b41 (patch) | |
| tree | f662532dda1d5084c098adf2491052c340044aa3 /net/wireless/core.c | |
| parent | 178d1337a5274e414127400f551af453aeefe312 (diff) | |
| download | linux-stable-1aa38eceb6c006a8bb96f2922cab5d03131d9b41.tar.gz linux-stable-1aa38eceb6c006a8bb96f2922cab5d03131d9b41.tar.bz2 linux-stable-1aa38eceb6c006a8bb96f2922cab5d03131d9b41.zip | |
{nl,mac}80211: fix interface combinations on crypto controlled devices
[ Upstream commit e6f4051123fd33901e9655a675b22aefcdc5d277 ]
Commit 33d915d9e8ce ("{nl,mac}80211: allow 4addr AP operation on
crypto controlled devices") has introduced a change which allows
4addr operation on crypto controlled devices (ex: ath10k). This
change has inadvertently impacted the interface combinations logic
on such devices.
General rule is that software interfaces like AP/VLAN should not be
listed under supported interface combinations and should not be
considered during validation of these combinations; because of the
aforementioned change, AP/VLAN interfaces(if present) will be checked
against interfaces supported by the device and blocks valid interface
combinations.
Consider a case where an AP and AP/VLAN are up and running; when a
second AP device is brought up on the same physical device, this AP
will be checked against the AP/VLAN interface (which will not be
part of supported interface combinations of the device) and blocks
second AP to come up.
Add a new API cfg80211_iftype_allowed() to fix the problem, this
API works for all devices with/without SW crypto control.
Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org>
Fixes: 33d915d9e8ce ("{nl,mac}80211: allow 4addr AP operation on crypto controlled devices")
Link: https://lore.kernel.org/r/1563779690-9716-1-git-send-email-mpubbise@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/wireless/core.c')
| -rw-r--r-- | net/wireless/core.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c index 2a46ec3cb72c..68660781aa51 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -1335,10 +1335,8 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb, } break; case NETDEV_PRE_UP: - if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)) && - !(wdev->iftype == NL80211_IFTYPE_AP_VLAN && - rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP && - wdev->use_4addr)) + if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype, + wdev->use_4addr, 0)) return notifier_from_errno(-EOPNOTSUPP); if (rfkill_blocked(rdev->rfkill)) |