EHT: Parse Multi-Link elements

Parse and store pointers to different types of Multi-Link elements
received in Management frames.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>

diff --git a/src/common/ieee802_11_common.c b/src/common/ieee802_11_common.c
index d97525e9f9b86428e172f0ff90f2b6eca02a23fc..966861c17d2a3ffe8c2a48ca916857fc268f218f 100644 (file)
--- a/src/common/ieee802_11_common.c
+++ b/src/common/ieee802_11_common.c
@@ -199,6 +199,46 @@ static int ieee802_11_parse_vendor_specific(const u8 *pos, size_t elen,
 }
 
 
+static int ieee802_11_parse_mle(const u8 *pos, size_t elen,
+                               struct ieee802_11_elems *elems,
+                               int show_errors)
+{
+       u8 mle_type = pos[0] & MULTI_LINK_CONTROL_TYPE_MASK;
+
+       switch (mle_type) {
+       case MULTI_LINK_CONTROL_TYPE_BASIC:
+               elems->basic_mle = pos;
+               elems->basic_mle_len = elen;
+               break;
+       case MULTI_LINK_CONTROL_TYPE_PROBE_REQ:
+               elems->probe_req_mle = pos;
+               elems->probe_req_mle_len = elen;
+               break;
+       case MULTI_LINK_CONTROL_TYPE_RECONF:
+               elems->reconf_mle = pos;
+               elems->reconf_mle_len = elen;
+               break;
+       case MULTI_LINK_CONTROL_TYPE_TDLS:
+               elems->tdls_mle = pos;
+               elems->tdls_mle_len = elen;
+               break;
+       case MULTI_LINK_CONTROL_TYPE_PRIOR_ACCESS:
+               elems->prior_access_mle = pos;
+               elems->prior_access_mle_len = elen;
+               break;
+       default:
+               if (show_errors) {
+                       wpa_printf(MSG_MSGDUMP,
+                                  "Unknown Multi-Link element type %u",
+                                  mle_type);
+               }
+               return -1;
+       }
+
+       return 0;
+}
+
+
 static int ieee802_11_parse_extension(const u8 *pos, size_t elen,
                                      struct ieee802_11_elems *elems,
                                      int show_errors)
@@ -315,6 +355,12 @@ static int ieee802_11_parse_extension(const u8 *pos, size_t elen,
                elems->eht_operation = pos;
                elems->eht_operation_len = elen;
                break;
+       case WLAN_EID_EXT_MULTI_LINK:
+               if (elen < 2)
+                       break;
+               if (ieee802_11_parse_mle(pos, elen, elems, show_errors))
+                       return -1;
+               break;
        default:
                if (show_errors) {
                        wpa_printf(MSG_MSGDUMP,

diff --git a/src/common/ieee802_11_common.h b/src/common/ieee802_11_common.h
index c3a3234b3e7a874acd193fd99f10dae055430e7b..ff6d2a89fa4fe1180c801d3727defcb18370f92f 100644 (file)
--- a/src/common/ieee802_11_common.h
+++ b/src/common/ieee802_11_common.h
@@ -119,6 +119,11 @@ struct ieee802_11_elems {
        const u8 *pasn_params;
        const u8 *eht_capabilities;
        const u8 *eht_operation;
+       const u8 *basic_mle;
+       const u8 *probe_req_mle;
+       const u8 *reconf_mle;
+       const u8 *tdls_mle;
+       const u8 *prior_access_mle;
 
        u8 ssid_len;
        u8 supp_rates_len;
@@ -175,6 +180,11 @@ struct ieee802_11_elems {
        u8 pasn_params_len;
        u8 eht_capabilities_len;
        u8 eht_operation_len;
+       u8 basic_mle_len;
+       u8 probe_req_mle_len;
+       u8 reconf_mle_len;
+       u8 tdls_mle_len;
+       u8 prior_access_mle_len;
 
        struct mb_ies_info mb_ies;
        struct frag_ies_info frag_ies;