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wifi: mac80211: add multi-link element to AUTH frames

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When sending an authentication frame from an MLD, include
the multi-link element with the MLD address and use the
link address for transmission.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2022-07-12 13:38:07 +02:00
parent 64f4b93afa
commit 8ec9a96b83
1 changed files with 20 additions and 1 deletions
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21
net/mac80211/util.c
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@ -1714,11 +1714,28 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
bool multi_link = sdata->vif.valid_links;
struct {
u8 id;
u8 len;
u8 ext_id;
struct ieee80211_multi_link_elem ml;
struct ieee80211_mle_basic_common_info basic;
} __packed mle = {
.id = WLAN_EID_EXTENSION,
.len = sizeof(mle) - 2,
.ext_id = WLAN_EID_EXT_EHT_MULTI_LINK,
.ml.control = cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC),
.basic.len = sizeof(mle.basic),
};
int err;
memcpy(mle.basic.mld_mac_addr, sdata->vif.addr, ETH_ALEN);
/* 24 + 6 = header + auth_algo + auth_transaction + status_code */
skb = dev_alloc_skb(local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN +
24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN);
24 + 6 + extra_len + IEEE80211_WEP_ICV_LEN +
multi_link * sizeof(mle));
if (!skb)
return;
@ -1735,6 +1752,8 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
mgmt->u.auth.status_code = cpu_to_le16(status);
if (extra)
skb_put_data(skb, extra, extra_len);
if (multi_link)
skb_put_data(skb, &mle, sizeof(mle));
if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);