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MSCS: Add support to populate MSCS Descriptor IE in (Re)AssocReq 

Include the MSCS Descriptor IE in the (Re)Association Request frames to
setup MSCS between the AP and the STA during association.

Signed-off-by: Vinita S. Maloo <vmaloo@codeaurora.org>
This commit is contained in:
Vinita S. Maloo 2020-06-16 20:21:30 +05:30 committed by Jouni Malinen
parent bbd3178af4
commit c504ff5398
2 changed files with 70 additions and 0 deletions
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36
wpa_supplicant/sme.c
View File

@ -1880,6 +1880,42 @@ void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
pfs_fail:
#endif /* CONFIG_DPP2 */
if (wpa_s->current_bss && wpa_s->robust_av.valid_config) {
struct wpabuf *mscs_ie;
size_t mscs_ie_len, buf_len, *wpa_ie_len, max_ie_len;
if (!wpa_bss_ext_capab(wpa_s->current_bss, WLAN_EXT_CAPAB_MSCS))
goto mscs_fail;
buf_len = 3 + /* MSCS descriptor IE header */
1 + /* Request type */
2 + /* User priority control */
4 + /* Stream timeout */
3 + /* TCLAS Mask IE header */
wpa_s->robust_av.frame_classifier_len;
mscs_ie = wpabuf_alloc(buf_len);
if (!mscs_ie) {
wpa_printf(MSG_INFO,
"MSCS: Failed to allocate MSCS IE");
goto mscs_fail;
}
wpa_ie_len = &wpa_s->sme.assoc_req_ie_len;
max_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
wpas_populate_mscs_descriptor_ie(&wpa_s->robust_av, mscs_ie);
if ((*wpa_ie_len + wpabuf_len(mscs_ie)) <= max_ie_len) {
wpa_hexdump_buf(MSG_MSGDUMP, "MSCS IE",
wpabuf_head(mscs_ie));
mscs_ie_len = wpabuf_len(mscs_ie);
os_memcpy(wpa_s->sme.assoc_req_ie + *wpa_ie_len,
wpabuf_head(mscs_ie), mscs_ie_len);
*wpa_ie_len += mscs_ie_len;
}
wpabuf_free(mscs_ie);
}
mscs_fail:
if (ssid && ssid->multi_ap_backhaul_sta) {
size_t multi_ap_ie_len;

34
wpa_supplicant/wpa_supplicant.c
View File

@ -3192,6 +3192,40 @@ pfs_fail:
wpa_ie_len += wpa_s->rsnxe_len;
}
if (bss && wpa_s->robust_av.valid_config) {
struct wpabuf *mscs_ie;
size_t mscs_ie_len, buf_len;
if (!wpa_bss_ext_capab(bss, WLAN_EXT_CAPAB_MSCS))
goto mscs_fail;
buf_len = 3 + /* MSCS descriptor IE header */
1 + /* Request type */
2 + /* User priority control */
4 + /* Stream timeout */
3 + /* TCLAS Mask IE header */
wpa_s->robust_av.frame_classifier_len;
mscs_ie = wpabuf_alloc(buf_len);
if (!mscs_ie) {
wpa_printf(MSG_INFO,
"MSCS: Failed to allocate MSCS IE");
goto mscs_fail;
}
wpas_populate_mscs_descriptor_ie(&wpa_s->robust_av, mscs_ie);
if ((wpa_ie_len + wpabuf_len(mscs_ie)) <= max_wpa_ie_len) {
wpa_hexdump_buf(MSG_MSGDUMP, "MSCS IE",
wpabuf_head(mscs_ie));
mscs_ie_len = wpabuf_len(mscs_ie);
os_memcpy(wpa_ie + wpa_ie_len, wpabuf_head(mscs_ie),
mscs_ie_len);
wpa_ie_len += mscs_ie_len;
}
wpabuf_free(mscs_ie);
}
mscs_fail:
if (ssid->multi_ap_backhaul_sta) {
size_t multi_ap_ie_len;