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MBO: Send WNM-Notification when cellular capabilities change 

Send a WNM-Notification to the associated AP to indicate changes in
cellular data capabilities.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
This commit is contained in:
Avraham Stern 2016-02-15 16:54:02 +02:00 committed by Jouni Malinen
parent 6605562af6
commit 016082e9e6
3 changed files with 46 additions and 4 deletions
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2
wpa_supplicant/ctrl_iface.c
View File

@ -493,6 +493,8 @@ static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
#ifdef CONFIG_MBO
} else if (os_strcasecmp(cmd, "non_pref_chan") == 0) {
ret = wpas_mbo_update_non_pref_chan(wpa_s, value);
} else if (os_strcasecmp(cmd, "mbo_cell_capa") == 0) {
wpas_mbo_update_cell_capa(wpa_s, atoi(value));
#endif /* CONFIG_MBO */
} else {
value[-1] = '=';

47
wpa_supplicant/mbo.c
View File

@ -182,7 +182,8 @@ int wpas_mbo_ie(struct wpa_supplicant *wpa_s, u8 *buf, size_t len)
}
static void wpas_mbo_send_wnm_notification(struct wpa_supplicant *wpa_s)
static void wpas_mbo_send_wnm_notification(struct wpa_supplicant *wpa_s,
const u8 *data, size_t len)
{
struct wpabuf *buf;
int res;
@ -196,7 +197,7 @@ static void wpas_mbo_send_wnm_notification(struct wpa_supplicant *wpa_s)
!wpa_bss_get_vendor_ie(wpa_s->current_bss, MBO_IE_VENDOR_TYPE))
return;
buf = wpabuf_alloc(512);
buf = wpabuf_alloc(4 + len);
if (!buf)
return;
@ -208,7 +209,7 @@ static void wpas_mbo_send_wnm_notification(struct wpa_supplicant *wpa_s)
wpabuf_put_u8(buf, wpa_s->mbo_wnm_token);
wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); /* Type */
wpas_mbo_non_pref_chan_attrs(wpa_s, buf, 1);
wpabuf_put_data(buf, data, len);
res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
wpa_s->own_addr, wpa_s->bssid,
@ -221,6 +222,21 @@ static void wpas_mbo_send_wnm_notification(struct wpa_supplicant *wpa_s)
}
static void wpas_mbo_non_pref_chan_changed(struct wpa_supplicant *wpa_s)
{
struct wpabuf *buf;
buf = wpabuf_alloc(512);
if (!buf)
return;
wpas_mbo_non_pref_chan_attrs(wpa_s, buf, 1);
wpas_mbo_send_wnm_notification(wpa_s, wpabuf_head_u8(buf),
wpabuf_len(buf));
wpabuf_free(buf);
}
static int wpa_non_pref_chan_is_eq(struct wpa_mbo_non_pref_channel *a,
struct wpa_mbo_non_pref_channel *b)
{
@ -346,7 +362,7 @@ update:
os_free(wpa_s->non_pref_chan);
wpa_s->non_pref_chan = chans;
wpa_s->non_pref_chan_num = num;
wpas_mbo_send_wnm_notification(wpa_s);
wpas_mbo_non_pref_chan_changed(wpa_s);
return 0;
@ -730,3 +746,26 @@ size_t wpas_mbo_ie_bss_trans_reject(struct wpa_supplicant *wpa_s, u8 *pos,
return mbo_add_ie(pos, len, reject_attr, sizeof(reject_attr));
}
void wpas_mbo_update_cell_capa(struct wpa_supplicant *wpa_s, u8 mbo_cell_capa)
{
u8 cell_capa[7];
if (wpa_s->conf->mbo_cell_capa == mbo_cell_capa) {
wpa_printf(MSG_DEBUG,
"MBO: Cellular capability already set to %u",
mbo_cell_capa);
return;
}
wpa_s->conf->mbo_cell_capa = mbo_cell_capa;
cell_capa[0] = WLAN_EID_VENDOR_SPECIFIC;
cell_capa[1] = 5; /* Length */
WPA_PUT_BE24(cell_capa + 2, OUI_WFA);
cell_capa[5] = MBO_ATTR_ID_CELL_DATA_CAPA;
cell_capa[6] = mbo_cell_capa;
wpas_mbo_send_wnm_notification(wpa_s, cell_capa, 7);
}

1
wpa_supplicant/wpa_supplicant_i.h
View File

@ -1167,6 +1167,7 @@ void wpas_mbo_ie_trans_req(struct wpa_supplicant *wpa_s, const u8 *ie,
size_t wpas_mbo_ie_bss_trans_reject(struct wpa_supplicant *wpa_s, u8 *pos,
size_t len,
enum mbo_transition_reject_reason reason);
void wpas_mbo_update_cell_capa(struct wpa_supplicant *wpa_s, u8 mbo_cell_capa);
/**
* wpa_supplicant_ctrl_iface_ctrl_rsp_handle - Handle a control response