diff options
| author | Manikanta Pubbisetty | 2019-07-22 12:44:50 +0530 |
|---|---|---|
| committer | Johannes Berg | 2019-07-26 13:50:43 +0200 |
| commit | e6f4051123fd33901e9655a675b22aefcdc5d277 (patch) | |
| tree | 43c53eee6035e004f879f708191f9e04440c6443 /net/wireless/nl80211.c | |
| parent | 47d858d0bdcd47cc1c6c9eeca91b091dd9e55637 (diff) | |
{nl,mac}80211: fix interface combinations on crypto controlled devices
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>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index fc83dd179c1a..fd05ae1437a9 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3484,9 +3484,7 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) return err; } - if (!(rdev->wiphy.interface_modes & (1 << type)) && - !(type == NL80211_IFTYPE_AP_VLAN && params.use_4addr && - rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)) + if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0)) return -EOPNOTSUPP; err = nl80211_parse_mon_options(rdev, type, info, ¶ms); |