From: Shivani Baranwal <quic_shivbara@xxxxxxxxxxx>
Add utility API to fetch Multi-Link Device(MLD) address from
basic Multi-Link(ML) IE.
Signed-off-by: Shivani Baranwal <quic_shivbara@xxxxxxxxxxx>
---
src/common/ieee802_11_common.c | 21 +++++++++++++++++++++
src/common/ieee802_11_common.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/src/common/ieee802_11_common.c b/src/common/ieee802_11_common.c
index 0eac3f84c..8b3b7d3af 100644
--- a/src/common/ieee802_11_common.c
+++ b/src/common/ieee802_11_common.c
@@ -2771,3 +2771,24 @@ const u8 * get_ml_ie(const u8 *ies, size_t len, u8 type)
return NULL;
}
+
+const u8 * get_basic_mle_mld_addr(const u8 *buf, size_t len)
+{
+#define BASIC_ML_IE_FIXED_LENGTH \
+ (2 + /* Control field */ \
+ 1 + /* Common info length field */ \
+ 6) /* MLD mac address field */
+ if (len < BASIC_ML_IE_FIXED_LENGTH)
+ return NULL;
+#undef BASIC_ML_IE_FIXED_LENGTH
+
+ if ((buf[0] & MULTI_LINK_CONTROL_TYPE_MASK) !=
+ MULTI_LINK_CONTROL_TYPE_BASIC)
+ return NULL;
+
+#define BASIC_ML_IE_MLD_ADDR_IDX \
+ (2 + /* Control field */ \
+ 1) /* Common Info length field */
+ return &buf[BASIC_ML_IE_MLD_ADDR_IDX];
+#undef BASIC_ML_IE_MLD_ADDR_IDX
+}
diff --git a/src/common/ieee802_11_common.h b/src/common/ieee802_11_common.h
index bd2c9fbf5..c3a3234b3 100644
--- a/src/common/ieee802_11_common.h
+++ b/src/common/ieee802_11_common.h
@@ -344,5 +344,6 @@ struct wpabuf * ieee802_11_defrag_data(struct ieee802_11_elems *elems,
struct wpabuf * ieee802_11_defrag(struct ieee802_11_elems *elems,
u8 eid, u8 eid_ext);
const u8 * get_ml_ie(const u8 *ies, size_t len, u8 type);
+const u8 * get_basic_mle_mld_addr(const u8 *buf, size_t len);
#endif /* IEEE802_11_COMMON_H */
--
2.25.1
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