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-rw-r--r--net/mac80211/cfg.c136
1 files changed, 113 insertions, 23 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index a4f6971b7a19..687b4c878d4a 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -23,6 +23,30 @@
#include "mesh.h"
#include "wme.h"
+static struct ieee80211_link_data *
+ieee80211_link_or_deflink(struct ieee80211_sub_if_data *sdata, int link_id,
+ bool require_valid)
+{
+ struct ieee80211_link_data *link;
+
+ if (link_id < 0) {
+ /*
+ * For keys, if sdata is not an MLD, we might not use
+ * the return value at all (if it's not a pairwise key),
+ * so in that case (require_valid==false) don't error.
+ */
+ if (require_valid && sdata->vif.valid_links)
+ return ERR_PTR(-EINVAL);
+
+ return &sdata->deflink;
+ }
+
+ link = sdata_dereference(sdata->link[link_id], sdata);
+ if (!link)
+ return ERR_PTR(-ENOLINK);
+ return link;
+}
+
static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
struct vif_params *params)
{
@@ -202,6 +226,10 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
if (params->use_4addr == ifmgd->use_4addr)
return 0;
+ /* FIXME: no support for 4-addr MLO yet */
+ if (sdata->vif.valid_links)
+ return -EOPNOTSUPP;
+
sdata->u.mgd.use_4addr = params->use_4addr;
if (!ifmgd->associated)
return 0;
@@ -434,10 +462,12 @@ static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata,
}
static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
- u8 key_idx, bool pairwise, const u8 *mac_addr,
- struct key_params *params)
+ int link_id, u8 key_idx, bool pairwise,
+ const u8 *mac_addr, struct key_params *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_link_data *link =
+ ieee80211_link_or_deflink(sdata, link_id, false);
struct ieee80211_local *local = sdata->local;
struct sta_info *sta = NULL;
struct ieee80211_key *key;
@@ -446,6 +476,9 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
if (!ieee80211_sdata_running(sdata))
return -ENETDOWN;
+ if (IS_ERR(link))
+ return PTR_ERR(link);
+
if (pairwise && params->mode == NL80211_KEY_SET_TX)
return ieee80211_set_tx(sdata, mac_addr, key_idx);
@@ -454,6 +487,8 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_TKIP:
case WLAN_CIPHER_SUITE_WEP104:
+ if (link_id >= 0)
+ return -EINVAL;
if (WARN_ON_ONCE(fips_enabled))
return -EINVAL;
break;
@@ -466,6 +501,8 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
if (IS_ERR(key))
return PTR_ERR(key);
+ key->conf.link_id = link_id;
+
if (pairwise)
key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
@@ -527,7 +564,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
break;
}
- err = ieee80211_key_link(key, sdata, sta);
+ err = ieee80211_key_link(key, link, sta);
out_unlock:
mutex_unlock(&local->sta_mtx);
@@ -536,18 +573,37 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
}
static struct ieee80211_key *
-ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata,
+ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id,
u8 key_idx, bool pairwise, const u8 *mac_addr)
{
struct ieee80211_local *local = sdata->local;
+ struct ieee80211_link_data *link = &sdata->deflink;
struct ieee80211_key *key;
- struct sta_info *sta;
+
+ if (link_id >= 0) {
+ link = rcu_dereference_check(sdata->link[link_id],
+ lockdep_is_held(&sdata->wdev.mtx));
+ if (!link)
+ return NULL;
+ }
if (mac_addr) {
+ struct sta_info *sta;
+ struct link_sta_info *link_sta;
+
sta = sta_info_get_bss(sdata, mac_addr);
if (!sta)
return NULL;
+ if (link_id >= 0) {
+ link_sta = rcu_dereference_check(sta->link[link_id],
+ lockdep_is_held(&local->sta_mtx));
+ if (!link_sta)
+ return NULL;
+ } else {
+ link_sta = &sta->deflink;
+ }
+
if (pairwise && key_idx < NUM_DEFAULT_KEYS)
return rcu_dereference_check_key_mtx(local,
sta->ptk[key_idx]);
@@ -557,7 +613,7 @@ ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata,
NUM_DEFAULT_MGMT_KEYS +
NUM_DEFAULT_BEACON_KEYS)
return rcu_dereference_check_key_mtx(local,
- sta->deflink.gtk[key_idx]);
+ link_sta->gtk[key_idx]);
return NULL;
}
@@ -566,7 +622,7 @@ ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata,
return rcu_dereference_check_key_mtx(local,
sdata->keys[key_idx]);
- key = rcu_dereference_check_key_mtx(local, sdata->deflink.gtk[key_idx]);
+ key = rcu_dereference_check_key_mtx(local, link->gtk[key_idx]);
if (key)
return key;
@@ -578,7 +634,8 @@ ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata,
}
static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
- u8 key_idx, bool pairwise, const u8 *mac_addr)
+ int link_id, u8 key_idx, bool pairwise,
+ const u8 *mac_addr)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
@@ -588,7 +645,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
mutex_lock(&local->sta_mtx);
mutex_lock(&local->key_mtx);
- key = ieee80211_lookup_key(sdata, key_idx, pairwise, mac_addr);
+ key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
if (!key) {
ret = -ENOENT;
goto out_unlock;
@@ -605,8 +662,8 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
}
static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
- u8 key_idx, bool pairwise, const u8 *mac_addr,
- void *cookie,
+ int link_id, u8 key_idx, bool pairwise,
+ const u8 *mac_addr, void *cookie,
void (*callback)(void *cookie,
struct key_params *params))
{
@@ -624,7 +681,7 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
rcu_read_lock();
- key = ieee80211_lookup_key(sdata, key_idx, pairwise, mac_addr);
+ key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
if (!key)
goto out;
@@ -711,34 +768,49 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
static int ieee80211_config_default_key(struct wiphy *wiphy,
struct net_device *dev,
- u8 key_idx, bool uni,
+ int link_id, u8 key_idx, bool uni,
bool multi)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_link_data *link =
+ ieee80211_link_or_deflink(sdata, link_id, false);
- ieee80211_set_default_key(sdata, key_idx, uni, multi);
+ if (IS_ERR(link))
+ return PTR_ERR(link);
+
+ ieee80211_set_default_key(link, key_idx, uni, multi);
return 0;
}
static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
struct net_device *dev,
- u8 key_idx)
+ int link_id, u8 key_idx)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_link_data *link =
+ ieee80211_link_or_deflink(sdata, link_id, true);
+
+ if (IS_ERR(link))
+ return PTR_ERR(link);
- ieee80211_set_default_mgmt_key(sdata, key_idx);
+ ieee80211_set_default_mgmt_key(link, key_idx);
return 0;
}
static int ieee80211_config_default_beacon_key(struct wiphy *wiphy,
struct net_device *dev,
- u8 key_idx)
+ int link_id, u8 key_idx)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_link_data *link =
+ ieee80211_link_or_deflink(sdata, link_id, true);
+
+ if (IS_ERR(link))
+ return PTR_ERR(link);
- ieee80211_set_default_beacon_key(sdata, key_idx);
+ ieee80211_set_default_beacon_key(link, key_idx);
return 0;
}
@@ -1610,6 +1682,18 @@ static int sta_link_apply_parameters(struct ieee80211_local *local,
rcu_dereference_protected(sta->link[link_id],
lockdep_is_held(&local->sta_mtx));
+ /*
+ * If there are no changes, then accept a link that doesn't exist,
+ * unless it's a new link.
+ */
+ if (params->link_id < 0 && !new_link &&
+ !params->link_mac && !params->txpwr_set &&
+ !params->supported_rates_len &&
+ !params->ht_capa && !params->vht_capa &&
+ !params->he_capa && !params->eht_capa &&
+ !params->opmode_notif_used)
+ return 0;
+
if (!link || !link_sta)
return -EINVAL;
@@ -1625,6 +1709,8 @@ static int sta_link_apply_parameters(struct ieee80211_local *local,
params->link_mac)) {
return -EINVAL;
}
+ } else if (new_link) {
+ return -EINVAL;
}
if (params->txpwr_set) {
@@ -2554,7 +2640,8 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_link_data *link = &sdata->deflink;
+ struct ieee80211_link_data *link =
+ ieee80211_link_or_deflink(sdata, params->link_id, true);
struct ieee80211_tx_queue_params p;
if (!local->ops->conf_tx)
@@ -2563,6 +2650,9 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
if (local->hw.queues < IEEE80211_NUM_ACS)
return -EOPNOTSUPP;
+ if (IS_ERR(link))
+ return PTR_ERR(link);
+
memset(&p, 0, sizeof(p));
p.aifs = params->aifs;
p.cw_max = params->cwmax;
@@ -3597,9 +3687,6 @@ static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
case NL80211_IFTYPE_MESH_POINT: {
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
- if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
- return -EINVAL;
-
/* changes into another band are not supported */
if (sdata->vif.bss_conf.chandef.chan->band !=
params->chandef.chan->band)
@@ -3732,7 +3819,7 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
IEEE80211_QUEUE_STOP_REASON_CSA);
cfg80211_ch_switch_started_notify(sdata->dev,
- &sdata->deflink.csa_chandef,
+ &sdata->deflink.csa_chandef, 0,
params->count, params->block_tx);
if (changed) {
@@ -4614,6 +4701,9 @@ static int ieee80211_add_intf_link(struct wiphy *wiphy,
{
struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
+ if (wdev->use_4addr)
+ return -EOPNOTSUPP;
+
return ieee80211_vif_set_links(sdata, wdev->valid_links);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.