authentication timed out by "wifi: mac80211: do link->MLD address translation on RX"

[Wen Gong <quic_wgong@xxxxxxxxxxx>]

Hi Johannes,

When the rx packet is skb_copy(), the hdr is not re-assign the new skb 
value, and lead the

operation of "translate to MLD addresses" take effect on the original 
skb, and lead

the check "if (!ether_addr_equal(ifmgd->auth_data->ap_addr, 
mgmt->bssid))" fail in ieee80211_rx_mgmt_auth(),

and thus happened "authentication timed out".

After below change, issue not happen again.

--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -4854,6 +4854,8 @@ static bool ieee80211_prepare_and_rx_handle(struct 
ieee80211_rx_data *rx,
                        return true;
                }

+               hdr = (void *)rx->skb->data;
+
                /* skb_copy() does not copy the hw timestamps, so copy it
                 * explicitly
                 */


commit:

https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?id=42fb9148c078004d07b4c39bd7b1086b6165780c

wifi: mac80211: do link->MLD address translation on RX