wifi: mac80211: Parse station profile from association response

[carl9170fw.git] / include / linux / ieee80211.h

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 651bafe7bd1b86616d3defedabd4ba7ef0676da2..a4e66d4bce86291500da3f721d6fbfb9a4a5600d 100644 (file)
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -4502,18 +4502,17 @@ static inline u8 ieee80211_mle_common_size(const u8 *data)
 
        switch (u16_get_bits(control, IEEE80211_ML_CONTROL_TYPE)) {
        case IEEE80211_ML_CONTROL_TYPE_BASIC:
-               common += sizeof(struct ieee80211_mle_basic_common_info);
-               break;
        case IEEE80211_ML_CONTROL_TYPE_PREQ:
-               common += sizeof(struct ieee80211_mle_preq_common_info);
+       case IEEE80211_ML_CONTROL_TYPE_TDLS:
+               /*
+                * The length is the first octet pointed by mle->variable so no
+                * need to add anything
+                */
                break;
        case IEEE80211_ML_CONTROL_TYPE_RECONF:
                if (control & IEEE80211_MLC_RECONF_PRES_MLD_MAC_ADDR)
                        common += 6;
                return common;
-       case IEEE80211_ML_CONTROL_TYPE_TDLS:
-               common += sizeof(struct ieee80211_mle_tdls_common_info);
-               break;
        case IEEE80211_ML_CONTROL_TYPE_PRIO_ACCESS:
                if (control & IEEE80211_MLC_PRIO_ACCESS_PRES_AP_MLD_MAC_ADDR)
                        common += 6;
@@ -4530,7 +4529,7 @@ static inline u8 ieee80211_mle_common_size(const u8 *data)
  * @data: pointer to the element data
  * @len: length of the containing element
  */
-static inline bool ieee80211_mle_size_ok(const u8 *data, u8 len)
+static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
 {
        const struct ieee80211_multi_link_elem *mle = (const void *)data;
        u8 fixed = sizeof(*mle);
@@ -4595,6 +4594,7 @@ static inline bool ieee80211_mle_size_ok(const u8 *data, u8 len)
 
 enum ieee80211_mle_subelems {
        IEEE80211_MLE_SUBELEM_PER_STA_PROFILE           = 0,
+       IEEE80211_MLE_SUBELEM_FRAGMENT                  = 254,
 };
 
 #define IEEE80211_MLE_STA_CONTROL_LINK_ID                      0x000f
@@ -4613,6 +4613,46 @@ struct ieee80211_mle_per_sta_profile {
        u8 variable[];
 } __packed;
 
+/**
+ * ieee80211_mle_sta_prof_size_ok - validate multi-link element sta profile size
+ * @data: pointer to the sub element data
+ * @len: length of the containing sub element
+ */
+static inline bool ieee80211_mle_sta_prof_size_ok(const u8 *data, size_t len)
+{
+       const struct ieee80211_mle_per_sta_profile *prof = (const void *)data;
+       u16 control;
+       u8 fixed = sizeof(*prof);
+       u8 info_len = 1;
+
+       if (len < fixed)
+               return false;
+
+       control = le16_to_cpu(prof->control);
+
+       if (control & IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT)
+               info_len += 6;
+       if (control & IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT)
+               info_len += 2;
+       if (control & IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT)
+               info_len += 8;
+       if (control & IEEE80211_MLE_STA_CONTROL_DTIM_INFO_PRESENT)
+               info_len += 2;
+       if (control & IEEE80211_MLE_STA_CONTROL_BSS_PARAM_CHANGE_CNT_PRESENT)
+               info_len += 1;
+
+       if (control & IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE &&
+           control & IEEE80211_MLE_STA_CONTROL_NSTR_BITMAP_SIZE) {
+               if (control & IEEE80211_MLE_STA_CONTROL_NSTR_BITMAP_SIZE)
+                       info_len += 2;
+               else
+                       info_len += 1;
+       }
+
+       return prof->sta_info_len >= info_len &&
+              fixed + prof->sta_info_len <= len;
+}
+
 #define for_each_mle_subelement(_elem, _data, _len)                    \
        if (ieee80211_mle_size_ok(_data, _len))                         \
                for_each_element(_elem,                                 \