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mac80211: add support for MLD AP client probing

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Select a link for outgoing probe packets

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2025-08-28 14:48:42 +02:00
parent 34e1092e88
commit a04b5fdcb6
1 changed files with 64 additions and 0 deletions
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64
package/kernel/mac80211/patches/subsys/370-wifi-mac80211-add-MLO-support-to-ieee80211_probe_cli.patch Normal file
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@ -0,0 +1,64 @@
From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 28 Aug 2025 14:41:57 +0200
Subject: [PATCH] wifi: mac80211: add MLO support to ieee80211_probe_client
Use the first available link to probe the client.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -4320,7 +4320,9 @@ static int ieee80211_probe_client(struct
struct ieee80211_tx_info *info;
struct sta_info *sta;
struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_bss_conf *link_conf;
enum nl80211_band band;
+ u8 link_id;
int ret;
/* the lock is needed to assign the cookie later */
@@ -4335,7 +4337,23 @@ static int ieee80211_probe_client(struct
qos = sta->sta.wme;
- chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
+ if (ieee80211_vif_is_mld(&sdata->vif)) {
+ if (sta->sta.valid_links)
+ link_id = ffs(sta->sta.valid_links) - 1;
+ else
+ link_id = sta->deflink.link_id;
+
+ link_conf = rcu_dereference(sdata->vif.link_conf[link_id]);
+ if (unlikely(!link_conf)) {
+ ret = -ENOLINK;
+ goto unlock;
+ }
+ } else {
+ link_id = IEEE80211_LINK_UNSPECIFIED;
+ link_conf = &sdata->vif.bss_conf;
+ }
+
+ chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
if (WARN_ON(!chanctx_conf)) {
ret = -EINVAL;
goto unlock;
@@ -4367,14 +4385,15 @@ static int ieee80211_probe_client(struct
nullfunc->frame_control = fc;
nullfunc->duration_id = 0;
memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
- memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
- memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
+ memcpy(nullfunc->addr2, link_conf->addr, ETH_ALEN);
+ memcpy(nullfunc->addr3, link_conf->addr, ETH_ALEN);
nullfunc->seq_ctrl = 0;
info = IEEE80211_SKB_CB(skb);
info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
IEEE80211_TX_INTFL_NL80211_FRAME_TX;
+ info->control.flags |= u32_encode_bits(link_id, IEEE80211_TX_CTRL_MLO_LINK);
info->band = band;
skb_set_queue_mapping(skb, IEEE80211_AC_VO);