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wifi: mac80211: mlme: support extended MLD capa/ops in assoc

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Support passing the value from userspace on to the AP in the
association and ML link reconfiguration requests. We may need
to also add a driver value to or in with the field, but for
now have no feature that is controlled by the driver.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250308225541.2e555beb0a76.I623f59023b47ec202fc0c7520f2b5f575b439927@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2025-03-08 23:03:29 +02:00
parent 969241371f
commit 96d4311c31
2 changed files with 32 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/mac80211/ieee80211_i.h
View File

@ -462,6 +462,8 @@ struct ieee80211_mgd_assoc_data {
unsigned int assoc_link_id;
__le16 ext_mld_capa_ops;
u8 fils_nonces[2 * FILS_NONCE_LEN];
u8 fils_kek[FILS_MAX_KEK_LEN];
size_t fils_kek_len;

32
net/mac80211/mlme.c
View File

@ -1943,6 +1943,21 @@ ieee80211_assoc_add_ml_elem(struct ieee80211_sub_if_data *sdata,
}
skb_put_data(skb, &mld_capa_ops, sizeof(mld_capa_ops));
/* Many APs have broken parsing of the extended MLD capa/ops field,
* dropping (re-)association request frames or replying with association
* response with a failure status if it's present. Without a clear
* indication as to whether the AP supports parsing this field or not do
* not include it in the common information unless strict mode is set.
*/
if (ieee80211_hw_check(&local->hw, STRICT) &&
assoc_data->ext_mld_capa_ops) {
ml_elem->control |=
cpu_to_le16(IEEE80211_MLC_BASIC_PRES_EXT_MLD_CAPA_OP);
common->len += 2;
skb_put_data(skb, &assoc_data->ext_mld_capa_ops,
sizeof(assoc_data->ext_mld_capa_ops));
}
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
u16 link_present_elems[PRESENT_ELEMS_MAX] = {};
const u8 *extra_elems;
@ -2112,6 +2127,7 @@ static int ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
/* max common info field in basic multi-link element */
size += sizeof(struct ieee80211_mle_basic_common_info) +
2 + /* capa & op */
2 + /* ext capa & op */
2; /* EML capa */
/*
@ -9366,6 +9382,8 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
else
memcpy(assoc_data->ap_addr, cbss->bssid, ETH_ALEN);
assoc_data->ext_mld_capa_ops = cpu_to_le16(req->ext_mld_capa_ops);
if (ifmgd->associated) {
u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
@ -10136,7 +10154,7 @@ void ieee80211_process_ml_reconf_resp(struct ieee80211_sub_if_data *sdata,
static struct sk_buff *
ieee80211_build_ml_reconf_req(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgd_assoc_data *add_links_data,
u16 removed_links)
u16 removed_links, __le16 ext_mld_capa_ops)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_mgmt *mgmt;
@ -10185,6 +10203,9 @@ ieee80211_build_ml_reconf_req(struct ieee80211_sub_if_data *sdata,
var_common_size += 2;
}
if (ext_mld_capa_ops)
var_common_size += 2;
/* Add the common information length */
size += common_size + var_common_size;
@ -10269,6 +10290,12 @@ ieee80211_build_ml_reconf_req(struct ieee80211_sub_if_data *sdata,
skb_put_data(skb, &mld_capa_ops, sizeof(mld_capa_ops));
}
if (ext_mld_capa_ops) {
ml_elem->control |=
cpu_to_le16(IEEE80211_MLC_RECONF_PRES_EXT_MLD_CAPA_OP);
skb_put_data(skb, &ext_mld_capa_ops, sizeof(ext_mld_capa_ops));
}
if (sdata->u.mgd.flags & IEEE80211_STA_ENABLE_RRM)
capab |= WLAN_CAPABILITY_RADIO_MEASURE;
@ -10535,7 +10562,8 @@ int ieee80211_mgd_assoc_ml_reconf(struct ieee80211_sub_if_data *sdata,
* is expected to send the ML reconfiguration response frame on the link
* on which the request was received.
*/
skb = ieee80211_build_ml_reconf_req(sdata, data, req->rem_links);
skb = ieee80211_build_ml_reconf_req(sdata, data, req->rem_links,
cpu_to_le16(req->ext_mld_capa_ops));
if (!skb) {
err = -ENOMEM;
goto err_free;