Re: [PATCH] brcmfmac: implement more accurate skb tracking
From: Rafał Miłecki <zajec5@gmail.com>
Date: 2016-09-26 12:38:46
Also in:
linux-wireless, lkml
On 26 September 2016 at 14:13, Rafał Miłecki [off-list ref] wrote:
On 26 September 2016 at 13:46, Arend Van Spriel [off-list ref] wrote:quoted
On 26-9-2016 12:23, Rafał Miłecki wrote:quoted
From: Rafał Miłecki <rafal@milecki.pl> We need to track 802.1x packets to know if there are any pending ones for transmission. This is required for performing key update in the firmware.The problem we are trying to solve is a pretty old one. The problem is that wpa_supplicant uses two separate code paths: EAPOL messaging through data path and key configuration though nl80211.Can I find it described/reported somewhere?quoted
quoted
Unfortunately our old tracking code wasn't very accurate. It was treating skb as pending as soon as it was passed by the netif. Actual handling packet to the firmware was happening later as brcmfmac internally queues them and uses its own worker(s).That does not seem right. As soon as we get a 1x packet we need to wait with key configuration regardless whether it is still in the driver or handed over to firmware already.OK, thanks.
Actually, it's not OK. I was trying to report/describe/discuss this problem for over a week. I couldn't get much of answer from you. I had to come with a patch I worked on for quite some time. Only then you decided to react and reply with a reason for a nack. I see this patch may be wrong (but it's still hard to know what's going wrong without a proper hostapd bug report). I'd expect you to somehow work & communicate with open source community. -- Rafał