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Re: [PATCH v2] wifi: mac80211: fix cfg80211_bss always hold when assoc response fail for MLO connection

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On 8/22/2023 7:16 PM, Johannes Berg wrote:
On Tue, 2023-08-22 at 06:04 -0400, Wen Gong wrote:
It is 100% ratio to reproduce the issue with this change.
Add "mgmt->u.assoc_resp.status_code = 1" in ieee80211_rx_mgmt_assoc_resp().
Don't think that adds any value, but I guess I can always remove it.

change the "mgmt->u.assoc_resp.status_code = 1" is only a way to reproduce the bss hold

issue. you can remove it when upstream this patch.😁


+		/* use the addr of assoc_data link which is set in ieee80211_mgd_assoc() */
not sure that's so useful? but anyway

The reason I'm even writing this message is that you didn't think this
change through:
Yes, you can remove the comment when upstream this patch.
-		const u8 *addr;
+		u8 addr[ETH_ALEN] __aligned(2);
That has some other consequences you need to adapt to, in particular

                 /* need to have local link addresses for MLO connections */

                 WARN_ON(cr.ap_mld_addr && !cr.links[link_id].addr);

makes no sense anymore. Not sure if that's the only one.

After this patch, the cr.links[link_id].addr will be a valid local link address from

struct cfg80211_rx_assoc_resp, so I think it is not needed remove now.


Another is here in __cfg80211_connect_result():

        for_each_valid_link(cr, link) {
            if (WARN_ON(!cr->links[link].addr))
                goto out;



johannes



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