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wifi: mac80211: add link id to ieee80211_gtk_rekey_add()

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In MLO, we need the link id in the GTK key to be given by
the driver after rekeying in wowlan, so add that.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240228094500.ce1bfc83a680.I43a6f8ab2804ee07116a37d5b9ec601b843464b1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Shaul Triebitz 2024-02-28 09:44:56 +01:00 committed by Johannes Berg
parent b2edc72171
commit 04577bfa99
3 changed files with 22 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/wireless/intel/iwlwifi/mvm/d3.c
View File

@ -1976,6 +1976,7 @@ static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
} conf = {
.conf.cipher = gtk_cipher,
};
int link_id = vif->active_links ? __ffs(vif->active_links) : -1;
BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
@ -2009,7 +2010,7 @@ static bool iwl_mvm_gtk_rekey(struct iwl_wowlan_status_data *status,
memcpy(conf.conf.key, status->gtk[i].key,
sizeof(status->gtk[i].key));
key = ieee80211_gtk_rekey_add(vif, &conf.conf);
key = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id);
if (IS_ERR(key))
return false;
@ -2040,6 +2041,7 @@ iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
.conf.keyidx = key_data->id,
};
struct ieee80211_key_seq seq;
int link_id = vif->active_links ? __ffs(vif->active_links) : -1;
if (!key_data->len)
return true;
@ -2065,17 +2067,17 @@ iwl_mvm_d3_igtk_bigtk_rekey_add(struct iwl_wowlan_status_data *status,
BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key));
memcpy(conf.conf.key, key_data->key, conf.conf.keylen);
key_config = ieee80211_gtk_rekey_add(vif, &conf.conf);
key_config = ieee80211_gtk_rekey_add(vif, &conf.conf, link_id);
if (IS_ERR(key_config))
return false;
ieee80211_set_key_rx_seq(key_config, 0, &seq);
if (key_config->keyidx == 4 || key_config->keyidx == 5) {
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int link_id = vif->active_links ? __ffs(vif->active_links) : 0;
struct iwl_mvm_vif_link_info *mvm_link =
mvmvif->link[link_id];
struct iwl_mvm_vif_link_info *mvm_link;
link_id = link_id < 0 ? 0 : link_id;
mvm_link = mvmvif->link[link_id];
mvm_link->igtk = key_config;
}

4
include/net/mac80211.h
View File

@ -5912,6 +5912,7 @@ void ieee80211_remove_key(struct ieee80211_key_conf *keyconf);
* ieee80211_gtk_rekey_add - add a GTK key from rekeying during WoWLAN
* @vif: the virtual interface to add the key on
* @keyconf: new key data
* @link_id: the link id of the key or -1 for non-MLO
*
* When GTK rekeying was done while the system was suspended, (a) new
* key(s) will be available. These will be needed by mac80211 for proper
@ -5939,7 +5940,8 @@ void ieee80211_remove_key(struct ieee80211_key_conf *keyconf);
*/
struct ieee80211_key_conf *
ieee80211_gtk_rekey_add(struct ieee80211_vif *vif,
struct ieee80211_key_conf *keyconf);
struct ieee80211_key_conf *keyconf,
int link_id);
/**
* ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying

16
net/mac80211/key.c
View File

@ -6,7 +6,7 @@
* Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright 2015-2017 Intel Deutschland GmbH
* Copyright 2018-2020, 2022-2023 Intel Corporation
* Copyright 2018-2020, 2022-2024 Intel Corporation
*/
#include <crypto/utils.h>
@ -1372,12 +1372,19 @@ EXPORT_SYMBOL_GPL(ieee80211_remove_key);
struct ieee80211_key_conf *
ieee80211_gtk_rekey_add(struct ieee80211_vif *vif,
struct ieee80211_key_conf *keyconf)
struct ieee80211_key_conf *keyconf,
int link_id)
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_local *local = sdata->local;
struct ieee80211_key *key;
int err;
struct ieee80211_link_data *link_data =
link_id < 0 ? &sdata->deflink :
sdata_dereference(sdata->link[link_id], sdata);
if (WARN_ON(!link_data))
return ERR_PTR(-EINVAL);
if (WARN_ON(!local->wowlan))
return ERR_PTR(-EINVAL);
@ -1394,8 +1401,9 @@ ieee80211_gtk_rekey_add(struct ieee80211_vif *vif,
if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
/* FIXME: this function needs to get a link ID */
err = ieee80211_key_link(key, &sdata->deflink, NULL);
key->conf.link_id = link_id;
err = ieee80211_key_link(key, link_data, NULL);
if (err)
return ERR_PTR(err);