#include "utils/common.h"
#include "common/ieee802_11_defs.h"
#include "rsn_supp/wpa.h"
-#include "../wpa_supplicant/wpa_supplicant_i.h"
-#include "../wpa_supplicant/driver_i.h"
+#include "wpa_supplicant_i.h"
+#include "driver_i.h"
+#include "scan.h"
#define MAX_TFS_IE_LEN 1024
-#ifdef CONFIG_IEEE80211V
/* get the TFS IE from driver */
static int ieee80211_11_get_tfs_ie(struct wpa_supplicant *wpa_s, u8 *buf,
/* MLME-SLEEPMODE.request */
int ieee802_11_send_wnmsleep_req(struct wpa_supplicant *wpa_s,
- u8 action, u8 intval)
+ u8 action, u16 intval, struct wpabuf *tfs_req)
{
struct ieee80211_mgmt *mgmt;
int res;
enum wnm_oper tfs_oper = action == 0 ? WNM_SLEEP_TFS_REQ_IE_ADD :
WNM_SLEEP_TFS_REQ_IE_NONE;
+ wpa_printf(MSG_DEBUG, "WNM: Request to send WNM-Sleep Mode Request "
+ "action=%s to " MACSTR,
+ action == 0 ? "enter" : "exit",
+ MAC2STR(wpa_s->bssid));
+
/* WNM-Sleep Mode IE */
wnmsleep_ie_len = sizeof(struct wnm_sleep_element);
wnmsleep_ie = os_zalloc(sizeof(struct wnm_sleep_element));
wnmsleep_ie->len = wnmsleep_ie_len - 2;
wnmsleep_ie->action_type = action;
wnmsleep_ie->status = WNM_STATUS_SLEEP_ACCEPT;
- wnmsleep_ie->intval = intval;
+ wnmsleep_ie->intval = host_to_le16(intval);
+ wpa_hexdump(MSG_DEBUG, "WNM: WNM-Sleep Mode element",
+ (u8 *) wnmsleep_ie, wnmsleep_ie_len);
/* TFS IE(s) */
- wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
- if (wnmtfs_ie == NULL) {
- os_free(wnmsleep_ie);
- return -1;
- }
- if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
- tfs_oper)) {
- wnmtfs_ie_len = 0;
- os_free(wnmtfs_ie);
- wnmtfs_ie = NULL;
+ if (tfs_req) {
+ wnmtfs_ie_len = wpabuf_len(tfs_req);
+ wnmtfs_ie = os_malloc(wnmtfs_ie_len);
+ if (wnmtfs_ie == NULL) {
+ os_free(wnmsleep_ie);
+ return -1;
+ }
+ os_memcpy(wnmtfs_ie, wpabuf_head(tfs_req), wnmtfs_ie_len);
+ } else {
+ wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
+ if (wnmtfs_ie == NULL) {
+ os_free(wnmsleep_ie);
+ return -1;
+ }
+ if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
+ tfs_oper)) {
+ wnmtfs_ie_len = 0;
+ os_free(wnmtfs_ie);
+ wnmtfs_ie = NULL;
+ }
}
+ wpa_hexdump(MSG_DEBUG, "WNM: TFS Request element",
+ (u8 *) wnmtfs_ie, wnmtfs_ie_len);
mgmt = os_zalloc(sizeof(*mgmt) + wnmsleep_ie_len + wnmtfs_ie_len);
if (mgmt == NULL) {
wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
"WNM-Sleep Request action frame");
+ os_free(wnmsleep_ie);
+ os_free(wnmtfs_ie);
return -1;
}
WLAN_FC_STYPE_ACTION);
mgmt->u.action.category = WLAN_ACTION_WNM;
mgmt->u.action.u.wnm_sleep_req.action = WNM_SLEEP_MODE_REQ;
+ mgmt->u.action.u.wnm_sleep_req.dialogtoken = 1;
os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable, wnmsleep_ie,
wnmsleep_ie_len);
/* copy TFS IE here */
}
+static void wnm_sleep_mode_enter_success(struct wpa_supplicant *wpa_s,
+ u8 *tfsresp_ie_start,
+ u8 *tfsresp_ie_end)
+{
+ wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
+ wpa_s->bssid, NULL, NULL);
+ /* remove GTK/IGTK ?? */
+
+ /* set the TFS Resp IE(s) */
+ if (tfsresp_ie_start && tfsresp_ie_end &&
+ tfsresp_ie_end - tfsresp_ie_start >= 0) {
+ u16 tfsresp_ie_len;
+ tfsresp_ie_len = (tfsresp_ie_end + tfsresp_ie_end[1] + 2) -
+ tfsresp_ie_start;
+ wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
+ /* pass the TFS Resp IE(s) to driver for processing */
+ if (ieee80211_11_set_tfs_ie(wpa_s, wpa_s->bssid,
+ tfsresp_ie_start,
+ &tfsresp_ie_len,
+ WNM_SLEEP_TFS_RESP_IE_SET))
+ wpa_printf(MSG_DEBUG, "WNM: Fail to set TFS Resp IE");
+ }
+}
+
+
+static void wnm_sleep_mode_exit_success(struct wpa_supplicant *wpa_s,
+ const u8 *frm, u16 key_len_total)
+{
+ u8 *ptr, *end;
+ u8 gtk_len;
+
+ wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM, wpa_s->bssid,
+ NULL, NULL);
+
+ /* Install GTK/IGTK */
+
+ /* point to key data field */
+ ptr = (u8 *) frm + 1 + 1 + 2;
+ end = ptr + key_len_total;
+ wpa_hexdump_key(MSG_DEBUG, "WNM: Key Data", ptr, key_len_total);
+
+ while (ptr + 1 < end) {
+ if (ptr + 2 + ptr[1] > end) {
+ wpa_printf(MSG_DEBUG, "WNM: Invalid Key Data element "
+ "length");
+ if (end > ptr) {
+ wpa_hexdump(MSG_DEBUG, "WNM: Remaining data",
+ ptr, end - ptr);
+ }
+ break;
+ }
+ if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
+ if (ptr[1] < 11 + 5) {
+ wpa_printf(MSG_DEBUG, "WNM: Too short GTK "
+ "subelem");
+ break;
+ }
+ gtk_len = *(ptr + 4);
+ if (ptr[1] < 11 + gtk_len ||
+ gtk_len < 5 || gtk_len > 32) {
+ wpa_printf(MSG_DEBUG, "WNM: Invalid GTK "
+ "subelem");
+ break;
+ }
+ wpa_wnmsleep_install_key(
+ wpa_s->wpa,
+ WNM_SLEEP_SUBELEM_GTK,
+ ptr);
+ ptr += 13 + gtk_len;
+#ifdef CONFIG_IEEE80211W
+ } else if (*ptr == WNM_SLEEP_SUBELEM_IGTK) {
+ if (ptr[1] < 2 + 6 + WPA_IGTK_LEN) {
+ wpa_printf(MSG_DEBUG, "WNM: Too short IGTK "
+ "subelem");
+ break;
+ }
+ wpa_wnmsleep_install_key(wpa_s->wpa,
+ WNM_SLEEP_SUBELEM_IGTK, ptr);
+ ptr += 10 + WPA_IGTK_LEN;
+#endif /* CONFIG_IEEE80211W */
+ } else
+ break; /* skip the loop */
+ }
+}
+
+
static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
const u8 *frm, int len)
{
*/
u8 *pos = (u8 *) frm; /* point to action field */
u16 key_len_total = le_to_host16(*((u16 *)(frm+2)));
- u8 gtk_len;
-#ifdef CONFIG_IEEE80211W
- u8 igtk_len;
-#endif /* CONFIG_IEEE80211W */
struct wnm_sleep_element *wnmsleep_ie = NULL;
/* multiple TFS Resp IE (assuming consecutive) */
u8 *tfsresp_ie_start = NULL;
u8 *tfsresp_ie_end = NULL;
- u16 tfsresp_ie_len = 0;
wpa_printf(MSG_DEBUG, "action=%d token = %d key_len_total = %d",
frm[0], frm[1], key_len_total);
pos += 4 + key_len_total;
+ if (pos > frm + len) {
+ wpa_printf(MSG_INFO, "WNM: Too short frame for Key Data field");
+ return;
+ }
while (pos - frm < len) {
u8 ie_len = *(pos + 1);
+ if (pos + 2 + ie_len > frm + len) {
+ wpa_printf(MSG_INFO, "WNM: Invalid IE len %u", ie_len);
+ break;
+ }
+ wpa_hexdump(MSG_DEBUG, "WNM: Element", pos, 2 + ie_len);
if (*pos == WLAN_EID_WNMSLEEP)
wnmsleep_ie = (struct wnm_sleep_element *) pos;
else if (*pos == WLAN_EID_TFS_RESP) {
return;
}
- if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT) {
+ if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT ||
+ wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) {
wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "
"frame (action=%d, intval=%d)",
wnmsleep_ie->action_type, wnmsleep_ie->intval);
- if (wnmsleep_ie->action_type == 0) {
- wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
- wpa_s->bssid, NULL, NULL);
- /* remove GTK/IGTK ?? */
-
- /* set the TFS Resp IE(s) */
- if (tfsresp_ie_start && tfsresp_ie_end &&
- tfsresp_ie_end - tfsresp_ie_start >= 0) {
- tfsresp_ie_len = (tfsresp_ie_end +
- tfsresp_ie_end[1] + 2) -
- tfsresp_ie_start;
- wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
- /*
- * pass the TFS Resp IE(s) to driver for
- * processing
- */
- if (ieee80211_11_set_tfs_ie(
- wpa_s, wpa_s->bssid,
- tfsresp_ie_start,
- &tfsresp_ie_len,
- WNM_SLEEP_TFS_RESP_IE_SET))
- wpa_printf(MSG_DEBUG, "Fail to set "
- "TFS Resp IE");
- }
- } else if (wnmsleep_ie->action_type == 1) {
- wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM,
- wpa_s->bssid, NULL, NULL);
- /* Install GTK/IGTK */
- do {
- /* point to key data field */
- u8 *ptr = (u8 *) frm + 1 + 1 + 2;
- while (ptr < (u8 *) frm + 4 + key_len_total) {
- if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
- gtk_len = *(ptr + 4);
- wpa_wnmsleep_install_key(
- wpa_s->wpa,
- WNM_SLEEP_SUBELEM_GTK,
- ptr);
- ptr += 13 + gtk_len;
-#ifdef CONFIG_IEEE80211W
- } else if (*ptr ==
- WNM_SLEEP_SUBELEM_IGTK) {
- igtk_len = WPA_IGTK_LEN;
- wpa_wnmsleep_install_key(
- wpa_s->wpa,
- WNM_SLEEP_SUBELEM_IGTK,
- ptr);
- ptr += 10 + WPA_IGTK_LEN;
-#endif /* CONFIG_IEEE80211W */
- } else
- break; /* skip the loop */
- }
- } while(0);
+ if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER) {
+ wnm_sleep_mode_enter_success(wpa_s, tfsresp_ie_start,
+ tfsresp_ie_end);
+ } else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT) {
+ wnm_sleep_mode_exit_success(wpa_s, frm, key_len_total);
}
} else {
wpa_printf(MSG_DEBUG, "Reject recv WNM-Sleep Response frame "
"(action=%d, intval=%d)",
wnmsleep_ie->action_type, wnmsleep_ie->intval);
- if (wnmsleep_ie->action_type == 0)
+ if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER)
wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
wpa_s->bssid, NULL, NULL);
- else if (wnmsleep_ie->action_type == 1)
+ else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT)
wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_FAIL,
wpa_s->bssid, NULL, NULL);
}
}
+static void wnm_send_bss_transition_mgmt_resp(struct wpa_supplicant *wpa_s,
+ u8 dialog_token, u8 status,
+ u8 delay, const u8 *target_bssid)
+{
+ u8 buf[1000], *pos;
+ struct ieee80211_mgmt *mgmt;
+ size_t len;
+
+ wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Response "
+ "to " MACSTR " dialog_token=%u status=%u delay=%d",
+ MAC2STR(wpa_s->bssid), dialog_token, status, delay);
+
+ mgmt = (struct ieee80211_mgmt *) buf;
+ os_memset(&buf, 0, sizeof(buf));
+ os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
+ os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
+ os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_ACTION);
+ mgmt->u.action.category = WLAN_ACTION_WNM;
+ mgmt->u.action.u.bss_tm_resp.action = WNM_BSS_TRANS_MGMT_RESP;
+ mgmt->u.action.u.bss_tm_resp.dialog_token = dialog_token;
+ mgmt->u.action.u.bss_tm_resp.status_code = status;
+ mgmt->u.action.u.bss_tm_resp.bss_termination_delay = delay;
+ pos = mgmt->u.action.u.bss_tm_resp.variable;
+ if (target_bssid) {
+ os_memcpy(pos, target_bssid, ETH_ALEN);
+ pos += ETH_ALEN;
+ }
+
+ len = pos - (u8 *) &mgmt->u.action.category;
+
+ wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
+ wpa_s->own_addr, wpa_s->bssid,
+ &mgmt->u.action.category, len, 0);
+}
+
+
+static void ieee802_11_rx_bss_trans_mgmt_req(struct wpa_supplicant *wpa_s,
+ const u8 *pos, const u8 *end,
+ int reply)
+{
+ u8 dialog_token;
+ u8 mode;
+ u16 disassoc_timer;
+
+ if (pos + 5 > end)
+ return;
+
+ dialog_token = pos[0];
+ mode = pos[1];
+ disassoc_timer = WPA_GET_LE16(pos + 2);
+
+ wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management Request: "
+ "dialog_token=%u request_mode=0x%x "
+ "disassoc_timer=%u validity_interval=%u",
+ dialog_token, mode, disassoc_timer, pos[4]);
+ pos += 5;
+ if (mode & 0x08)
+ pos += 12; /* BSS Termination Duration */
+ if (mode & 0x10) {
+ char url[256];
+ if (pos + 1 > end || pos + 1 + pos[0] > end) {
+ wpa_printf(MSG_DEBUG, "WNM: Invalid BSS Transition "
+ "Management Request (URL)");
+ return;
+ }
+ os_memcpy(url, pos + 1, pos[0]);
+ url[pos[0]] = '\0';
+ wpa_msg(wpa_s, MSG_INFO, "WNM: ESS Disassociation Imminent - "
+ "session_info_url=%s", url);
+ }
+
+ if (mode & 0x04) {
+ wpa_msg(wpa_s, MSG_INFO, "WNM: Disassociation Imminent - "
+ "Disassociation Timer %u", disassoc_timer);
+ if (disassoc_timer && !wpa_s->scanning) {
+ /* TODO: mark current BSS less preferred for
+ * selection */
+ wpa_printf(MSG_DEBUG, "Trying to find another BSS");
+ wpa_supplicant_req_scan(wpa_s, 0, 0);
+ }
+ }
+
+ if (reply) {
+ /* TODO: add support for reporting Accept */
+ wnm_send_bss_transition_mgmt_resp(wpa_s, dialog_token,
+ 1 /* Reject - unspecified */,
+ 0, NULL);
+ }
+}
+
+
void ieee802_11_rx_wnm_action(struct wpa_supplicant *wpa_s,
struct rx_action *action)
{
- u8 *pos = (u8 *) action->data; /* point to action field */
- u8 act = *pos++;
- /* u8 dialog_token = *pos++; */
+ const u8 *pos, *end;
+ u8 act;
+
+ if (action->data == NULL || action->len == 0)
+ return;
+
+ pos = action->data;
+ end = pos + action->len;
+ act = *pos++;
+
+ wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
+ act, MAC2STR(action->sa));
+ if (wpa_s->wpa_state < WPA_ASSOCIATED ||
+ os_memcmp(action->sa, wpa_s->bssid, ETH_ALEN) != 0) {
+ wpa_printf(MSG_DEBUG, "WNM: Ignore unexpected WNM Action "
+ "frame");
+ return;
+ }
switch (act) {
+ case WNM_BSS_TRANS_MGMT_REQ:
+ ieee802_11_rx_bss_trans_mgmt_req(wpa_s, pos, end,
+ !(action->da[0] & 0x01));
+ break;
case WNM_SLEEP_MODE_RESP:
ieee802_11_rx_wnmsleep_resp(wpa_s, action->data, action->len);
break;
break;
}
}
-
-#endif /* CONFIG_IEEE80211V */
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