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wifi: mac80211: Process association status for affiliated links

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In case the AP returned a non success status for one of the links,
do not activate the link.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ilan Peer 2022-09-08 11:31:10 +03:00 committed by Johannes Berg
parent 45ebac4f05
commit c2d052a3c4
2 changed files with 37 additions and 5 deletions
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2
net/mac80211/ieee80211_i.h
View File

@ -412,6 +412,8 @@ struct ieee80211_mgd_assoc_data {
u8 *elems; /* pointing to inside ie[] below */
ieee80211_conn_flags_t conn_flags;
u16 status;
} link[IEEE80211_MLD_MAX_NUM_LINKS];
u8 ap_addr[ETH_ALEN] __aligned(2);

40
net/mac80211/mlme.c
View File

@ -2754,7 +2754,8 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
struct ieee80211_link_data *link;
if (!cbss)
if (!cbss ||
assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS)
continue;
link = sdata_dereference(sdata->link[link_id], sdata);
@ -2782,7 +2783,8 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
struct ieee80211_link_data *link;
struct cfg80211_bss *cbss = assoc_data->link[link_id].bss;
if (!cbss)
if (!cbss ||
assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS)
continue;
link = sdata_dereference(sdata->link[link_id], sdata);
@ -3945,6 +3947,12 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link,
if (link_id == assoc_data->assoc_link_id) {
capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
/*
* we should not get to this flow unless the association was
* successful, so set the status directly to success
*/
assoc_data->link[link_id].status = WLAN_STATUS_SUCCESS;
} else if (!elems->prof) {
ret = false;
goto out;
@ -3952,8 +3960,19 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link,
const u8 *ptr = elems->prof->variable +
elems->prof->sta_info_len - 1;
/* FIXME: need to also handle the status code */
/*
* During parsing, we validated that these fields exist,
* otherwise elems->prof would have been set to NULL.
*/
capab_info = get_unaligned_le16(ptr);
assoc_data->link[link_id].status = get_unaligned_le16(ptr + 2);
if (assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) {
link_info(link, "association response status code=%u\n",
assoc_data->link[link_id].status);
ret = true;
goto out;
}
}
if (!is_s1g && !elems->supp_rates) {
@ -4874,6 +4893,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
unsigned int link_id;
struct sta_info *sta;
u64 changed[IEEE80211_MLD_MAX_NUM_LINKS] = {};
u16 valid_links = 0;
int err;
mutex_lock(&sdata->local->sta_mtx);
@ -4886,8 +4906,6 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
goto out_err;
if (sdata->vif.valid_links) {
u16 valid_links = 0;
for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
if (!assoc_data->link[link_id].bss)
continue;
@ -4957,6 +4975,12 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
&changed[link_id]))
goto out_err;
if (assoc_data->link[link_id].status != WLAN_STATUS_SUCCESS) {
valid_links &= ~BIT(link_id);
ieee80211_sta_remove_link(sta, link_id);
continue;
}
if (link_id != assoc_data->assoc_link_id) {
err = ieee80211_sta_activate_link(sta, link_id);
if (err)
@ -4964,6 +4988,9 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
}
}
/* links might have changed due to rejected ones, set them again */
ieee80211_vif_set_links(sdata, valid_links);
rate_control_rate_init(sta);
if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
@ -5197,10 +5224,13 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
link = sdata_dereference(sdata->link[link_id], sdata);
if (!link)
continue;
if (!assoc_data->link[link_id].bss)
continue;
resp.links[link_id].bss = assoc_data->link[link_id].bss;
resp.links[link_id].addr = link->conf->addr;
resp.links[link_id].status = assoc_data->link[link_id].status;
/* get uapsd queues configuration - same for all links */
resp.uapsd_queues = 0;