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

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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;