summaryrefslogtreecommitdiff
path: root/net/mac80211
diff options
context:
space:
mode:
authorDeren Wu <deren.wu@mediatek.com>2022-02-13 00:20:15 +0800
committerJohannes Berg <johannes.berg@intel.com>2022-02-16 15:25:02 +0100
commit610d086d6df0b15c3732a7b4a5b0f1c3e1b84d4c (patch)
tree91ec97df0645816fb4190e5e0c3b9912c4423e69 /net/mac80211
parentbf8e59fd315f304eb538546e35de6dc603e4709f (diff)
downloadlwn-610d086d6df0b15c3732a7b4a5b0f1c3e1b84d4c.tar.gz
lwn-610d086d6df0b15c3732a7b4a5b0f1c3e1b84d4c.zip
mac80211: fix EAPoL rekey fail in 802.3 rx path
mac80211 set capability NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211 to upper layer by default. That means we should pass EAPoL packets through nl80211 path only, and should not send the EAPoL skb to netdevice diretly. At the meanwhile, wpa_supplicant would not register sock to listen EAPoL skb on the netdevice. However, there is no control_port_protocol handler in mac80211 for 802.3 RX packets, mac80211 driver would pass up the EAPoL rekey frame to netdevice and wpa_supplicant would be never interactive with this kind of packets, if SUPPORTS_RX_DECAP_OFFLOAD is enabled. This causes STA always rekey fail if EAPoL frame go through 802.3 path. To avoid this problem, align the same process as 802.11 type to handle this frame before put it into network stack. This also addresses a potential security issue in 802.3 RX mode that was previously fixed in commit a8c4d76a8dd4 ("mac80211: do not accept/forward invalid EAPOL frames"). Cc: stable@vger.kernel.org # 5.12+ Fixes: 80a915ec4427 ("mac80211: add rx decapsulation offload support") Signed-off-by: Deren Wu <deren.wu@mediatek.com> Link: https://lore.kernel.org/r/6889c9fced5859ebb088564035f84fd0fa792a49.1644680751.git.deren.wu@mediatek.com [fix typos, update comment and add note about security issue] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/rx.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 93680af62c47..7b699b2f4d89 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2607,7 +2607,8 @@ static void ieee80211_deliver_skb_to_local_stack(struct sk_buff *skb,
* address, so that the authenticator (e.g. hostapd) will see
* the frame, but bridge won't forward it anywhere else. Note
* that due to earlier filtering, the only other address can
- * be the PAE group address.
+ * be the PAE group address, unless the hardware allowed them
+ * through in 802.3 offloaded mode.
*/
if (unlikely(skb->protocol == sdata->control_port_protocol &&
!ether_addr_equal(ehdr->h_dest, sdata->vif.addr)))
@@ -4514,12 +4515,7 @@ static void ieee80211_rx_8023(struct ieee80211_rx_data *rx,
/* deliver to local stack */
skb->protocol = eth_type_trans(skb, fast_rx->dev);
- memset(skb->cb, 0, sizeof(skb->cb));
- if (rx->list)
- list_add_tail(&skb->list, rx->list);
- else
- netif_receive_skb(skb);
-
+ ieee80211_deliver_skb_to_local_stack(skb, rx);
}
static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,