mac80211: parse also the RSNXE IE

Parse also the RSN Extension IE when parsing the rest of the IEs.
It will be used in a later patch.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20200131111300.891737-21-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 095a710..6f3e7c5 100644 (file)
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -2532,6 +2532,7 @@ enum ieee80211_eid {
        WLAN_EID_FILS_INDICATION = 240,
        WLAN_EID_DILS = 241,
        WLAN_EID_FRAGMENT = 242,
+       WLAN_EID_RSNX = 244,
        WLAN_EID_EXTENSION = 255
 };
 
@@ -3421,4 +3422,11 @@ static inline bool for_each_element_completed(const struct element *element,
        return (const u8 *)element == (const u8 *)data + datalen;
 }
 
+/**
+ * RSNX Capabilities:
+ * bits 0-3: Field length (n-1)
+ */
+#define WLAN_RSNX_CAPA_PROTECTED_TWT BIT(4)
+#define WLAN_RSNX_CAPA_SAE_H2E BIT(5)
+
 #endif /* LINUX_IEEE80211_H */

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 7074af9..8a49d78 100644 (file)
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1472,6 +1472,7 @@ struct ieee802_11_elems {
        const struct ieee80211_tim_ie *tim;
        const u8 *challenge;
        const u8 *rsn;
+       const u8 *rsnx;
        const u8 *erp_info;
        const u8 *ext_supp_rates;
        const u8 *wmm_info;
@@ -1519,6 +1520,7 @@ struct ieee802_11_elems {
        u8 tim_len;
        u8 challenge_len;
        u8 rsn_len;
+       u8 rsnx_len;
        u8 ext_supp_rates_len;
        u8 wmm_info_len;
        u8 wmm_param_len;

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 72039c8..7ddf050 100644 (file)
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -6,7 +6,7 @@
  * Copyright 2007      Johannes Berg <johannes@sipsolutions.net>
  * Copyright 2013-2014  Intel Mobile Communications GmbH
  * Copyright (C) 2015-2017     Intel Deutschland GmbH
- * Copyright (C) 2018-2019 Intel Corporation
+ * Copyright (C) 2018-2020 Intel Corporation
  *
  * utilities for mac80211
  */
@@ -994,6 +994,7 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
                case WLAN_EID_CHAN_SWITCH_TIMING:
                case WLAN_EID_LINK_ID:
                case WLAN_EID_BSS_MAX_IDLE_PERIOD:
+               case WLAN_EID_RSNX:
                /*
                 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
                 * that if the content gets bigger it might be needed more than once
@@ -1264,6 +1265,10 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
                        if (elen >= sizeof(*elems->max_idle_period_ie))
                                elems->max_idle_period_ie = (void *)pos;
                        break;
+               case WLAN_EID_RSNX:
+                       elems->rsnx = pos;
+                       elems->rsnx_len = elen;
+                       break;
                case WLAN_EID_EXTENSION:
                        ieee80211_parse_extension_element(calc_crc ?
                                                                &crc : NULL,