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wifi: mac80211: fast-xmit: handle non-MLO clients

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If there's a non-MLO client, the A2 must be set to the BSSID
of the link since no translation will happen in lower layers
and it's needed that way for encryption.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2022-07-18 16:58:18 +02:00
parent e4c9050a0d
commit 0f13f3c322
1 changed files with 15 additions and 1 deletions
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16
net/mac80211/tx.c
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@ -3045,7 +3045,21 @@ void ieee80211_check_fast_xmit(struct sta_info *sta)
fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
/* DA BSSID SA */
build.da_offs = offsetof(struct ieee80211_hdr, addr1);
memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
if (sta->sta.mlo || !sdata->vif.valid_links) {
memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
} else {
unsigned int link_id = sta->deflink.link_id;
struct ieee80211_link_data *link;
rcu_read_lock();
link = rcu_dereference(sdata->link[link_id]);
if (WARN_ON(!link)) {
rcu_read_unlock();
goto out;
}
memcpy(hdr->addr2, link->conf->addr, ETH_ALEN);
rcu_read_unlock();
}
build.sa_offs = offsetof(struct ieee80211_hdr, addr3);
build.hdr_len = 24;
break;