diff options
| author | Manikanta Pubbisetty <mpubbise@codeaurora.org> | 2018-03-28 18:34:19 +0530 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2018-03-29 11:35:22 +0200 |
| commit | db3bdcb9c3ffc628c5284d7ed03a704295ba1214 (patch) | |
| tree | 29260761f4478e8cb841fa9a2b841d57615afe74 /net/mac80211 | |
| parent | 19d3577e35e0cbb42694811b096e749a0f89a824 (diff) | |
| download | linux-db3bdcb9c3ffc628c5284d7ed03a704295ba1214.tar.bz2 | |
mac80211: allow AP_VLAN operation on crypto controlled devices
In the current implementation, mac80211 advertises the support of
AP_VLANs based on the driver's support for AP mode; it also
blocks encrypted AP_VLAN operation on devices advertising
SW_CRYPTO_CONTROL.
The implementation seems weird in it's current form and could be
often confusing, this is because there can be drivers advertising
both SW_CRYPTO_CONTROL and AP mode support (ex: ath10k) in which case
AP_VLAN will still be supported but only in open BSS and not in
secured BSS.
When SW_CRYPTO_CONTROL is enabled, it makes more sense if the decision
to support AP_VLANs is left to the driver. Mac80211 can then allow
AP_VLAN operations depending on the driver support.
Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/key.c | 8 | ||||
| -rw-r--r-- | net/mac80211/main.c | 8 |
2 files changed, 11 insertions, 5 deletions
diff --git a/net/mac80211/key.c b/net/mac80211/key.c index aee05ec3f7ea..ee0d0cc8dc3b 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -126,7 +126,7 @@ static void decrease_tailroom_need_count(struct ieee80211_sub_if_data *sdata, static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = key->sdata; struct sta_info *sta; int ret = -EOPNOTSUPP; @@ -162,7 +162,6 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) if (sta && !sta->uploaded) goto out_unsupported; - sdata = key->sdata; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { /* * The driver doesn't know anything about VLAN interfaces. @@ -214,8 +213,11 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) /* all of these we can do in software - if driver can */ if (ret == 1) return 0; - if (ieee80211_hw_check(&key->local->hw, SW_CRYPTO_CONTROL)) + if (ieee80211_hw_check(&key->local->hw, SW_CRYPTO_CONTROL)) { + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + return 0; return -EINVAL; + } return 0; default: return -EINVAL; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 0785d04a80bc..8d0333b5355b 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -930,8 +930,12 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) IEEE80211_HT_CAP_SM_PS_SHIFT; } - /* if low-level driver supports AP, we also support VLAN */ - if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { + /* if low-level driver supports AP, we also support VLAN. + * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN + * based on their support to transmit SW encrypted packets. + */ + if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) && + !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) { hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); } |