842f4520d0
Major changes are: SAE, Suite B, RFC 7268, EAP-PKE, ACS, and tons of bug fixes. Relnotes: yes
996 lines
24 KiB
C
996 lines
24 KiB
C
/*
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* Wi-Fi Multimedia Admission Control (WMM-AC)
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* Copyright(c) 2014, Intel Mobile Communication GmbH.
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* Copyright(c) 2014, Intel Corporation. All rights reserved.
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#include "utils/common.h"
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#include "utils/list.h"
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#include "utils/eloop.h"
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#include "common/ieee802_11_common.h"
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#include "wpa_supplicant_i.h"
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#include "bss.h"
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#include "driver_i.h"
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#include "wmm_ac.h"
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static void wmm_ac_addts_req_timeout(void *eloop_ctx, void *timeout_ctx);
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static const enum wmm_ac up_to_ac[8] = {
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WMM_AC_BK,
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WMM_AC_BE,
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WMM_AC_BE,
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WMM_AC_BK,
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WMM_AC_VI,
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WMM_AC_VI,
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WMM_AC_VO,
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WMM_AC_VO
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};
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static inline u8 wmm_ac_get_tsid(const struct wmm_tspec_element *tspec)
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{
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return (tspec->ts_info[0] >> 1) & 0x0f;
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}
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static u8 wmm_ac_get_direction(const struct wmm_tspec_element *tspec)
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{
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return (tspec->ts_info[0] >> 5) & 0x03;
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}
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static u8 wmm_ac_get_user_priority(const struct wmm_tspec_element *tspec)
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{
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return (tspec->ts_info[1] >> 3) & 0x07;
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}
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static u8 wmm_ac_direction_to_idx(u8 direction)
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{
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switch (direction) {
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case WMM_AC_DIR_UPLINK:
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return TS_DIR_IDX_UPLINK;
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case WMM_AC_DIR_DOWNLINK:
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return TS_DIR_IDX_DOWNLINK;
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case WMM_AC_DIR_BIDIRECTIONAL:
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return TS_DIR_IDX_BIDI;
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default:
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wpa_printf(MSG_ERROR, "Invalid direction: %d", direction);
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return WMM_AC_DIR_UPLINK;
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}
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}
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static int wmm_ac_add_ts(struct wpa_supplicant *wpa_s, const u8 *addr,
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const struct wmm_tspec_element *tspec)
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{
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struct wmm_tspec_element *_tspec;
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int ret;
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u16 admitted_time = le_to_host16(tspec->medium_time);
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u8 up = wmm_ac_get_user_priority(tspec);
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u8 ac = up_to_ac[up];
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u8 dir = wmm_ac_get_direction(tspec);
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u8 tsid = wmm_ac_get_tsid(tspec);
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enum ts_dir_idx idx = wmm_ac_direction_to_idx(dir);
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/* should have been verified before, but double-check here */
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if (wpa_s->tspecs[ac][idx]) {
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wpa_printf(MSG_ERROR,
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"WMM AC: tspec (ac=%d, dir=%d) already exists!",
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ac, dir);
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return -1;
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}
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/* copy tspec */
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_tspec = os_malloc(sizeof(*_tspec));
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if (!_tspec)
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return -1;
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/* store the admitted TSPEC */
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os_memcpy(_tspec, tspec, sizeof(*_tspec));
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if (dir != WMM_AC_DIR_DOWNLINK) {
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ret = wpa_drv_add_ts(wpa_s, tsid, addr, up, admitted_time);
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wpa_printf(MSG_DEBUG,
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"WMM AC: Add TS: addr=" MACSTR
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" TSID=%u admitted time=%u, ret=%d",
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MAC2STR(addr), tsid, admitted_time, ret);
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if (ret < 0) {
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os_free(_tspec);
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return -1;
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}
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}
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wpa_s->tspecs[ac][idx] = _tspec;
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wpa_printf(MSG_DEBUG, "Traffic stream was created successfully");
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wpa_msg(wpa_s, MSG_INFO, WMM_AC_EVENT_TSPEC_ADDED
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"tsid=%d addr=" MACSTR " admitted_time=%d",
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tsid, MAC2STR(addr), admitted_time);
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return 0;
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}
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static void wmm_ac_del_ts_idx(struct wpa_supplicant *wpa_s, u8 ac,
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enum ts_dir_idx dir)
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{
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struct wmm_tspec_element *tspec = wpa_s->tspecs[ac][dir];
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u8 tsid;
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if (!tspec)
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return;
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tsid = wmm_ac_get_tsid(tspec);
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wpa_printf(MSG_DEBUG, "WMM AC: Del TS ac=%d tsid=%d", ac, tsid);
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/* update the driver in case of uplink/bidi */
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if (wmm_ac_get_direction(tspec) != WMM_AC_DIR_DOWNLINK)
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wpa_drv_del_ts(wpa_s, tsid, wpa_s->bssid);
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wpa_msg(wpa_s, MSG_INFO, WMM_AC_EVENT_TSPEC_REMOVED
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"tsid=%d addr=" MACSTR, tsid, MAC2STR(wpa_s->bssid));
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os_free(wpa_s->tspecs[ac][dir]);
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wpa_s->tspecs[ac][dir] = NULL;
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}
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static void wmm_ac_del_req(struct wpa_supplicant *wpa_s, int failed)
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{
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struct wmm_ac_addts_request *req = wpa_s->addts_request;
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if (!req)
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return;
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if (failed)
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wpa_msg(wpa_s, MSG_INFO, WMM_AC_EVENT_TSPEC_REQ_FAILED
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"tsid=%u", wmm_ac_get_tsid(&req->tspec));
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eloop_cancel_timeout(wmm_ac_addts_req_timeout, wpa_s, req);
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wpa_s->addts_request = NULL;
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os_free(req);
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}
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static void wmm_ac_addts_req_timeout(void *eloop_ctx, void *timeout_ctx)
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{
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struct wpa_supplicant *wpa_s = eloop_ctx;
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struct wmm_ac_addts_request *addts_req = timeout_ctx;
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wpa_printf(MSG_DEBUG,
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"Timeout getting ADDTS response (tsid=%d up=%d)",
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wmm_ac_get_tsid(&addts_req->tspec),
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wmm_ac_get_user_priority(&addts_req->tspec));
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wmm_ac_del_req(wpa_s, 1);
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}
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static int wmm_ac_send_addts_request(struct wpa_supplicant *wpa_s,
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const struct wmm_ac_addts_request *req)
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{
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struct wpabuf *buf;
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int ret;
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wpa_printf(MSG_DEBUG, "Sending ADDTS Request to " MACSTR,
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MAC2STR(req->address));
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/* category + action code + dialog token + status + sizeof(tspec) */
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buf = wpabuf_alloc(4 + sizeof(req->tspec));
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if (!buf) {
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wpa_printf(MSG_ERROR, "WMM AC: Allocation error");
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return -1;
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}
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wpabuf_put_u8(buf, WLAN_ACTION_WMM);
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wpabuf_put_u8(buf, WMM_ACTION_CODE_ADDTS_REQ);
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wpabuf_put_u8(buf, req->dialog_token);
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wpabuf_put_u8(buf, 0); /* status code */
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wpabuf_put_data(buf, &req->tspec, sizeof(req->tspec));
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ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, req->address,
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wpa_s->own_addr, wpa_s->bssid,
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wpabuf_head(buf), wpabuf_len(buf), 0);
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if (ret) {
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wpa_printf(MSG_WARNING,
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"WMM AC: Failed to send ADDTS Request");
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}
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wpabuf_free(buf);
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return ret;
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}
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static int wmm_ac_send_delts(struct wpa_supplicant *wpa_s,
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const struct wmm_tspec_element *tspec,
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const u8 *address)
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{
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struct wpabuf *buf;
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int ret;
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/* category + action code + dialog token + status + sizeof(tspec) */
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buf = wpabuf_alloc(4 + sizeof(*tspec));
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if (!buf)
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return -1;
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wpa_printf(MSG_DEBUG, "Sending DELTS to " MACSTR, MAC2STR(address));
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/* category + action code + dialog token + status + sizeof(tspec) */
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wpabuf_put_u8(buf, WLAN_ACTION_WMM);
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wpabuf_put_u8(buf, WMM_ACTION_CODE_DELTS);
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wpabuf_put_u8(buf, 0); /* Dialog Token (not used) */
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wpabuf_put_u8(buf, 0); /* Status Code (not used) */
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wpabuf_put_data(buf, tspec, sizeof(*tspec));
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ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, address,
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wpa_s->own_addr, wpa_s->bssid,
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wpabuf_head(buf), wpabuf_len(buf), 0);
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if (ret)
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wpa_printf(MSG_WARNING, "Failed to send DELTS frame");
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wpabuf_free(buf);
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return ret;
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}
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/* return the AC using the given TSPEC tid */
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static int wmm_ac_find_tsid(struct wpa_supplicant *wpa_s, u8 tsid,
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enum ts_dir_idx *dir)
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{
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int ac;
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enum ts_dir_idx idx;
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for (ac = 0; ac < WMM_AC_NUM; ac++) {
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for (idx = 0; idx < TS_DIR_IDX_COUNT; idx++) {
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if (wpa_s->tspecs[ac][idx] &&
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wmm_ac_get_tsid(wpa_s->tspecs[ac][idx]) == tsid) {
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if (dir)
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*dir = idx;
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return ac;
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}
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}
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}
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return -1;
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}
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static struct wmm_ac_addts_request *
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wmm_ac_build_addts_req(struct wpa_supplicant *wpa_s,
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const struct wmm_ac_ts_setup_params *params,
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const u8 *address)
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{
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struct wmm_ac_addts_request *addts_req;
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struct wmm_tspec_element *tspec;
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u8 ac = up_to_ac[params->user_priority];
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u8 uapsd = wpa_s->wmm_ac_assoc_info->ac_params[ac].uapsd;
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addts_req = os_zalloc(sizeof(*addts_req));
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if (!addts_req)
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return NULL;
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tspec = &addts_req->tspec;
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os_memcpy(addts_req->address, address, ETH_ALEN);
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/* The dialog token cannot be zero */
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if (++wpa_s->wmm_ac_last_dialog_token == 0)
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wpa_s->wmm_ac_last_dialog_token++;
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addts_req->dialog_token = wpa_s->wmm_ac_last_dialog_token;
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tspec->eid = WLAN_EID_VENDOR_SPECIFIC;
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tspec->length = sizeof(*tspec) - 2; /* reduce eid and length */
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tspec->oui[0] = 0x00;
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tspec->oui[1] = 0x50;
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tspec->oui[2] = 0xf2;
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tspec->oui_type = WMM_OUI_TYPE;
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tspec->oui_subtype = WMM_OUI_SUBTYPE_TSPEC_ELEMENT;
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tspec->version = WMM_VERSION;
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tspec->ts_info[0] = params->tsid << 1;
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tspec->ts_info[0] |= params->direction << 5;
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tspec->ts_info[0] |= WMM_AC_ACCESS_POLICY_EDCA << 7;
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tspec->ts_info[1] = uapsd << 2;
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tspec->ts_info[1] |= params->user_priority << 3;
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tspec->ts_info[2] = 0;
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tspec->nominal_msdu_size = host_to_le16(params->nominal_msdu_size);
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if (params->fixed_nominal_msdu)
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tspec->nominal_msdu_size |=
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host_to_le16(WMM_AC_FIXED_MSDU_SIZE);
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tspec->mean_data_rate = host_to_le32(params->mean_data_rate);
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tspec->minimum_phy_rate = host_to_le32(params->minimum_phy_rate);
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tspec->surplus_bandwidth_allowance =
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host_to_le16(params->surplus_bandwidth_allowance);
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return addts_req;
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}
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static int param_in_range(const char *name, long value,
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long min_val, long max_val)
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{
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if (value < min_val || (max_val >= 0 && value > max_val)) {
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wpa_printf(MSG_DEBUG,
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"WMM AC: param %s (%ld) is out of range (%ld-%ld)",
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name, value, min_val, max_val);
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return 0;
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}
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return 1;
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}
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static int wmm_ac_should_replace_ts(struct wpa_supplicant *wpa_s,
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u8 tsid, u8 ac, u8 dir)
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{
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enum ts_dir_idx idx;
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int cur_ac, existing_ts = 0, replace_ts = 0;
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cur_ac = wmm_ac_find_tsid(wpa_s, tsid, &idx);
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if (cur_ac >= 0) {
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if (cur_ac != ac) {
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wpa_printf(MSG_DEBUG,
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"WMM AC: TSID %i already exists on different ac (%d)",
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tsid, cur_ac);
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return -1;
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}
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/* same tsid - this tspec will replace the current one */
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replace_ts |= BIT(idx);
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}
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for (idx = 0; idx < TS_DIR_IDX_COUNT; idx++) {
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if (wpa_s->tspecs[ac][idx])
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existing_ts |= BIT(idx);
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}
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switch (dir) {
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case WMM_AC_DIR_UPLINK:
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/* replace existing uplink/bidi tspecs */
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replace_ts |= existing_ts & (BIT(TS_DIR_IDX_UPLINK) |
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BIT(TS_DIR_IDX_BIDI));
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break;
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case WMM_AC_DIR_DOWNLINK:
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/* replace existing downlink/bidi tspecs */
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replace_ts |= existing_ts & (BIT(TS_DIR_IDX_DOWNLINK) |
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BIT(TS_DIR_IDX_BIDI));
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break;
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case WMM_AC_DIR_BIDIRECTIONAL:
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/* replace all existing tspecs */
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replace_ts |= existing_ts;
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break;
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default:
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return -1;
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}
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return replace_ts;
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}
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static int wmm_ac_ts_req_is_valid(struct wpa_supplicant *wpa_s,
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const struct wmm_ac_ts_setup_params *params)
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{
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enum wmm_ac req_ac;
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#define PARAM_IN_RANGE(field, min_value, max_value) \
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param_in_range(#field, params->field, min_value, max_value)
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if (!PARAM_IN_RANGE(tsid, 0, WMM_AC_MAX_TID) ||
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!PARAM_IN_RANGE(user_priority, 0, WMM_AC_MAX_USER_PRIORITY) ||
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!PARAM_IN_RANGE(nominal_msdu_size, 1, WMM_AC_MAX_NOMINAL_MSDU) ||
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!PARAM_IN_RANGE(mean_data_rate, 1, -1) ||
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!PARAM_IN_RANGE(minimum_phy_rate, 1, -1) ||
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!PARAM_IN_RANGE(surplus_bandwidth_allowance, WMM_AC_MIN_SBA_UNITY,
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-1))
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return 0;
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#undef PARAM_IN_RANGE
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if (!(params->direction == WMM_TSPEC_DIRECTION_UPLINK ||
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params->direction == WMM_TSPEC_DIRECTION_DOWNLINK ||
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params->direction == WMM_TSPEC_DIRECTION_BI_DIRECTIONAL)) {
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wpa_printf(MSG_DEBUG, "WMM AC: invalid TS direction: %d",
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params->direction);
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return 0;
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}
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req_ac = up_to_ac[params->user_priority];
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/* Requested accesss category must have acm */
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if (!wpa_s->wmm_ac_assoc_info->ac_params[req_ac].acm) {
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wpa_printf(MSG_DEBUG, "WMM AC: AC %d is not ACM", req_ac);
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return 0;
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}
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if (wmm_ac_should_replace_ts(wpa_s, params->tsid, req_ac,
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params->direction) < 0)
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return 0;
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return 1;
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}
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static struct wmm_ac_assoc_data *
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wmm_ac_process_param_elem(struct wpa_supplicant *wpa_s, const u8 *ies,
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size_t ies_len)
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{
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struct ieee802_11_elems elems;
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struct wmm_parameter_element *wmm_params;
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struct wmm_ac_assoc_data *assoc_data;
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int i;
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/* Parsing WMM Parameter Element */
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if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
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wpa_printf(MSG_DEBUG, "WMM AC: could not parse assoc ies");
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return NULL;
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}
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if (!elems.wmm) {
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wpa_printf(MSG_DEBUG, "WMM AC: No WMM IE");
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return NULL;
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}
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if (elems.wmm_len != sizeof(*wmm_params)) {
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wpa_printf(MSG_DEBUG, "WMM AC: Invalid WMM ie length");
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return NULL;
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}
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wmm_params = (struct wmm_parameter_element *)(elems.wmm);
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assoc_data = os_zalloc(sizeof(*assoc_data));
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if (!assoc_data)
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return NULL;
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for (i = 0; i < WMM_AC_NUM; i++)
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assoc_data->ac_params[i].acm =
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!!(wmm_params->ac[i].aci_aifsn & WMM_AC_ACM);
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wpa_printf(MSG_DEBUG,
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"WMM AC: AC mandatory: AC_BE=%u AC_BK=%u AC_VI=%u AC_VO=%u",
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assoc_data->ac_params[WMM_AC_BE].acm,
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assoc_data->ac_params[WMM_AC_BK].acm,
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assoc_data->ac_params[WMM_AC_VI].acm,
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assoc_data->ac_params[WMM_AC_VO].acm);
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return assoc_data;
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}
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static int wmm_ac_init(struct wpa_supplicant *wpa_s, const u8 *ies,
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size_t ies_len, const struct wmm_params *wmm_params)
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{
|
|
struct wmm_ac_assoc_data *assoc_data;
|
|
u8 ac;
|
|
|
|
if (wpa_s->wmm_ac_assoc_info) {
|
|
wpa_printf(MSG_ERROR, "WMM AC: Already initialized");
|
|
return -1;
|
|
}
|
|
|
|
if (!ies) {
|
|
wpa_printf(MSG_ERROR, "WMM AC: Missing IEs");
|
|
return -1;
|
|
}
|
|
|
|
if (!(wmm_params->info_bitmap & WMM_PARAMS_UAPSD_QUEUES_INFO)) {
|
|
wpa_printf(MSG_DEBUG, "WMM AC: Missing U-APSD configuration");
|
|
return -1;
|
|
}
|
|
|
|
os_memset(wpa_s->tspecs, 0, sizeof(wpa_s->tspecs));
|
|
wpa_s->wmm_ac_last_dialog_token = 0;
|
|
wpa_s->addts_request = NULL;
|
|
|
|
assoc_data = wmm_ac_process_param_elem(wpa_s, ies, ies_len);
|
|
if (!assoc_data)
|
|
return -1;
|
|
|
|
wpa_printf(MSG_DEBUG, "WMM AC: U-APSD queues=0x%x",
|
|
wmm_params->uapsd_queues);
|
|
|
|
for (ac = 0; ac < WMM_AC_NUM; ac++) {
|
|
assoc_data->ac_params[ac].uapsd =
|
|
!!(wmm_params->uapsd_queues & BIT(ac));
|
|
}
|
|
|
|
wpa_s->wmm_ac_assoc_info = assoc_data;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void wmm_ac_del_ts(struct wpa_supplicant *wpa_s, u8 ac, int dir_bitmap)
|
|
{
|
|
enum ts_dir_idx idx;
|
|
|
|
for (idx = 0; idx < TS_DIR_IDX_COUNT; idx++) {
|
|
if (!(dir_bitmap & BIT(idx)))
|
|
continue;
|
|
|
|
wmm_ac_del_ts_idx(wpa_s, ac, idx);
|
|
}
|
|
}
|
|
|
|
|
|
static void wmm_ac_deinit(struct wpa_supplicant *wpa_s)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < WMM_AC_NUM; i++)
|
|
wmm_ac_del_ts(wpa_s, i, TS_DIR_IDX_ALL);
|
|
|
|
/* delete pending add_ts requset */
|
|
wmm_ac_del_req(wpa_s, 1);
|
|
|
|
os_free(wpa_s->wmm_ac_assoc_info);
|
|
wpa_s->wmm_ac_assoc_info = NULL;
|
|
}
|
|
|
|
|
|
void wmm_ac_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *ies,
|
|
size_t ies_len, const struct wmm_params *wmm_params)
|
|
{
|
|
if (wmm_ac_init(wpa_s, ies, ies_len, wmm_params))
|
|
return;
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: Valid WMM association, WMM AC is enabled");
|
|
}
|
|
|
|
|
|
void wmm_ac_notify_disassoc(struct wpa_supplicant *wpa_s)
|
|
{
|
|
if (!wpa_s->wmm_ac_assoc_info)
|
|
return;
|
|
|
|
wmm_ac_deinit(wpa_s);
|
|
wpa_printf(MSG_DEBUG, "WMM AC: WMM AC is disabled");
|
|
}
|
|
|
|
|
|
int wpas_wmm_ac_delts(struct wpa_supplicant *wpa_s, u8 tsid)
|
|
{
|
|
struct wmm_tspec_element tspec;
|
|
int ac;
|
|
enum ts_dir_idx dir;
|
|
|
|
if (!wpa_s->wmm_ac_assoc_info) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: Failed to delete TS, WMM AC is disabled");
|
|
return -1;
|
|
}
|
|
|
|
ac = wmm_ac_find_tsid(wpa_s, tsid, &dir);
|
|
if (ac < 0) {
|
|
wpa_printf(MSG_DEBUG, "WMM AC: TS does not exist");
|
|
return -1;
|
|
}
|
|
|
|
tspec = *wpa_s->tspecs[ac][dir];
|
|
|
|
wmm_ac_del_ts_idx(wpa_s, ac, dir);
|
|
|
|
wmm_ac_send_delts(wpa_s, &tspec, wpa_s->bssid);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int wpas_wmm_ac_addts(struct wpa_supplicant *wpa_s,
|
|
struct wmm_ac_ts_setup_params *params)
|
|
{
|
|
struct wmm_ac_addts_request *addts_req;
|
|
|
|
if (!wpa_s->wmm_ac_assoc_info) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: Cannot add TS - missing assoc data");
|
|
return -1;
|
|
}
|
|
|
|
if (wpa_s->addts_request) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: can't add TS - ADDTS request is already pending");
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* we can setup downlink TS even without driver support.
|
|
* however, we need driver support for the other directions.
|
|
*/
|
|
if (params->direction != WMM_AC_DIR_DOWNLINK &&
|
|
!wpa_s->wmm_ac_supported) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"Cannot set uplink/bidi TS without driver support");
|
|
return -1;
|
|
}
|
|
|
|
if (!wmm_ac_ts_req_is_valid(wpa_s, params))
|
|
return -1;
|
|
|
|
wpa_printf(MSG_DEBUG, "WMM AC: TS setup request (addr=" MACSTR
|
|
" tsid=%u user priority=%u direction=%d)",
|
|
MAC2STR(wpa_s->bssid), params->tsid,
|
|
params->user_priority, params->direction);
|
|
|
|
addts_req = wmm_ac_build_addts_req(wpa_s, params, wpa_s->bssid);
|
|
if (!addts_req)
|
|
return -1;
|
|
|
|
if (wmm_ac_send_addts_request(wpa_s, addts_req))
|
|
goto err;
|
|
|
|
/* save as pending and set ADDTS resp timeout to 1 second */
|
|
wpa_s->addts_request = addts_req;
|
|
eloop_register_timeout(1, 0, wmm_ac_addts_req_timeout,
|
|
wpa_s, addts_req);
|
|
return 0;
|
|
err:
|
|
os_free(addts_req);
|
|
return -1;
|
|
}
|
|
|
|
|
|
static void wmm_ac_handle_delts(struct wpa_supplicant *wpa_s, const u8 *sa,
|
|
const struct wmm_tspec_element *tspec)
|
|
{
|
|
int ac;
|
|
u8 tsid;
|
|
enum ts_dir_idx idx;
|
|
|
|
tsid = wmm_ac_get_tsid(tspec);
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: DELTS frame has been received TSID=%u addr="
|
|
MACSTR, tsid, MAC2STR(sa));
|
|
|
|
ac = wmm_ac_find_tsid(wpa_s, tsid, &idx);
|
|
if (ac < 0) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: Ignoring DELTS frame - TSID does not exist");
|
|
return;
|
|
}
|
|
|
|
wmm_ac_del_ts_idx(wpa_s, ac, idx);
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"TS was deleted successfully (tsid=%u address=" MACSTR ")",
|
|
tsid, MAC2STR(sa));
|
|
}
|
|
|
|
|
|
static void wmm_ac_handle_addts_resp(struct wpa_supplicant *wpa_s, const u8 *sa,
|
|
const u8 resp_dialog_token, const u8 status_code,
|
|
const struct wmm_tspec_element *tspec)
|
|
{
|
|
struct wmm_ac_addts_request *req = wpa_s->addts_request;
|
|
u8 ac, tsid, up, dir;
|
|
int replace_tspecs;
|
|
|
|
tsid = wmm_ac_get_tsid(tspec);
|
|
dir = wmm_ac_get_direction(tspec);
|
|
up = wmm_ac_get_user_priority(tspec);
|
|
ac = up_to_ac[up];
|
|
|
|
/* make sure we have a matching addts request */
|
|
if (!req || req->dialog_token != resp_dialog_token) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: no req with dialog=%u, ignoring frame",
|
|
resp_dialog_token);
|
|
return;
|
|
}
|
|
|
|
/* make sure the params are the same */
|
|
if (os_memcmp(req->address, sa, ETH_ALEN) != 0 ||
|
|
tsid != wmm_ac_get_tsid(&req->tspec) ||
|
|
up != wmm_ac_get_user_priority(&req->tspec) ||
|
|
dir != wmm_ac_get_direction(&req->tspec)) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: ADDTS params do not match, ignoring frame");
|
|
return;
|
|
}
|
|
|
|
/* delete pending request */
|
|
wmm_ac_del_req(wpa_s, 0);
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"ADDTS response status=%d tsid=%u up=%u direction=%u",
|
|
status_code, tsid, up, dir);
|
|
|
|
if (status_code != WMM_ADDTS_STATUS_ADMISSION_ACCEPTED) {
|
|
wpa_printf(MSG_INFO, "WMM AC: ADDTS request was rejected");
|
|
goto err_msg;
|
|
}
|
|
|
|
replace_tspecs = wmm_ac_should_replace_ts(wpa_s, tsid, ac, dir);
|
|
if (replace_tspecs < 0)
|
|
goto err_delts;
|
|
|
|
wpa_printf(MSG_DEBUG, "ts idx replace bitmap: 0x%x", replace_tspecs);
|
|
|
|
/* when replacing tspecs - delete first */
|
|
wmm_ac_del_ts(wpa_s, ac, replace_tspecs);
|
|
|
|
/* Creating a new traffic stream */
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: adding a new TS with TSID=%u address="MACSTR
|
|
" medium time=%u access category=%d dir=%d ",
|
|
tsid, MAC2STR(sa),
|
|
le_to_host16(tspec->medium_time), ac, dir);
|
|
|
|
if (wmm_ac_add_ts(wpa_s, sa, tspec))
|
|
goto err_delts;
|
|
|
|
return;
|
|
|
|
err_delts:
|
|
/* ask the ap to delete the tspec */
|
|
wmm_ac_send_delts(wpa_s, tspec, sa);
|
|
err_msg:
|
|
wpa_msg(wpa_s, MSG_INFO, WMM_AC_EVENT_TSPEC_REQ_FAILED "tsid=%u",
|
|
tsid);
|
|
}
|
|
|
|
|
|
void wmm_ac_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
|
|
const u8 *sa, const u8 *data, size_t len)
|
|
{
|
|
u8 action;
|
|
u8 dialog_token;
|
|
u8 status_code;
|
|
struct ieee802_11_elems elems;
|
|
struct wmm_tspec_element *tspec;
|
|
|
|
if (wpa_s->wmm_ac_assoc_info == NULL) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: WMM AC is disabled, ignoring action frame");
|
|
return;
|
|
}
|
|
|
|
action = data[0];
|
|
|
|
if (action != WMM_ACTION_CODE_ADDTS_RESP &&
|
|
action != WMM_ACTION_CODE_DELTS) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: Unknown action (%d), ignoring action frame",
|
|
action);
|
|
return;
|
|
}
|
|
|
|
/* WMM AC action frame */
|
|
if (os_memcmp(da, wpa_s->own_addr, ETH_ALEN) != 0) {
|
|
wpa_printf(MSG_DEBUG, "WMM AC: frame destination addr="MACSTR
|
|
" is other than ours, ignoring frame", MAC2STR(da));
|
|
return;
|
|
}
|
|
|
|
if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) {
|
|
wpa_printf(MSG_DEBUG, "WMM AC: ignore frame with sa " MACSTR
|
|
" different other than our bssid", MAC2STR(da));
|
|
return;
|
|
}
|
|
|
|
if (len < 2 + sizeof(struct wmm_tspec_element)) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: Short ADDTS response ignored (len=%lu)",
|
|
(unsigned long) len);
|
|
return;
|
|
}
|
|
|
|
data++;
|
|
len--;
|
|
dialog_token = data[0];
|
|
status_code = data[1];
|
|
|
|
if (ieee802_11_parse_elems(data + 2, len - 2, &elems, 1) != ParseOK) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"WMM AC: Could not parse WMM AC action from " MACSTR,
|
|
MAC2STR(sa));
|
|
return;
|
|
}
|
|
|
|
/* the struct also contains the type and value, so decrease it */
|
|
if (elems.wmm_tspec_len != sizeof(struct wmm_tspec_element) - 2) {
|
|
wpa_printf(MSG_DEBUG, "WMM AC: missing or wrong length TSPEC");
|
|
return;
|
|
}
|
|
|
|
tspec = (struct wmm_tspec_element *)(elems.wmm_tspec - 2);
|
|
|
|
wpa_printf(MSG_DEBUG, "WMM AC: RX WMM AC Action from " MACSTR,
|
|
MAC2STR(sa));
|
|
wpa_hexdump(MSG_MSGDUMP, "WMM AC: WMM AC Action content", data, len);
|
|
|
|
switch (action) {
|
|
case WMM_ACTION_CODE_ADDTS_RESP:
|
|
wmm_ac_handle_addts_resp(wpa_s, sa, dialog_token, status_code,
|
|
tspec);
|
|
break;
|
|
case WMM_ACTION_CODE_DELTS:
|
|
wmm_ac_handle_delts(wpa_s, sa, tspec);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static const char * get_ac_str(u8 ac)
|
|
{
|
|
switch (ac) {
|
|
case WMM_AC_BE:
|
|
return "BE";
|
|
case WMM_AC_BK:
|
|
return "BK";
|
|
case WMM_AC_VI:
|
|
return "VI";
|
|
case WMM_AC_VO:
|
|
return "VO";
|
|
default:
|
|
return "N/A";
|
|
}
|
|
}
|
|
|
|
|
|
static const char * get_direction_str(u8 direction)
|
|
{
|
|
switch (direction) {
|
|
case WMM_AC_DIR_DOWNLINK:
|
|
return "Downlink";
|
|
case WMM_AC_DIR_UPLINK:
|
|
return "Uplink";
|
|
case WMM_AC_DIR_BIDIRECTIONAL:
|
|
return "Bi-directional";
|
|
default:
|
|
return "N/A";
|
|
}
|
|
}
|
|
|
|
|
|
int wpas_wmm_ac_status(struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
|
|
{
|
|
struct wmm_ac_assoc_data *assoc_info = wpa_s->wmm_ac_assoc_info;
|
|
enum ts_dir_idx idx;
|
|
int pos = 0;
|
|
u8 ac, up;
|
|
|
|
if (!assoc_info) {
|
|
return wpa_scnprintf(buf, buflen - pos,
|
|
"Not associated to a WMM AP, WMM AC is Disabled\n");
|
|
}
|
|
|
|
pos += wpa_scnprintf(buf + pos, buflen - pos, "WMM AC is Enabled\n");
|
|
|
|
for (ac = 0; ac < WMM_AC_NUM; ac++) {
|
|
int ts_count = 0;
|
|
|
|
pos += wpa_scnprintf(buf + pos, buflen - pos,
|
|
"%s: acm=%d uapsd=%d\n",
|
|
get_ac_str(ac),
|
|
assoc_info->ac_params[ac].acm,
|
|
assoc_info->ac_params[ac].uapsd);
|
|
|
|
for (idx = 0; idx < TS_DIR_IDX_COUNT; idx++) {
|
|
struct wmm_tspec_element *tspec;
|
|
u8 dir, tsid;
|
|
const char *dir_str;
|
|
|
|
tspec = wpa_s->tspecs[ac][idx];
|
|
if (!tspec)
|
|
continue;
|
|
|
|
ts_count++;
|
|
|
|
dir = wmm_ac_get_direction(tspec);
|
|
dir_str = get_direction_str(dir);
|
|
tsid = wmm_ac_get_tsid(tspec);
|
|
up = wmm_ac_get_user_priority(tspec);
|
|
|
|
pos += wpa_scnprintf(buf + pos, buflen - pos,
|
|
"\tTSID=%u UP=%u\n"
|
|
"\tAddress = "MACSTR"\n"
|
|
"\tWMM AC dir = %s\n"
|
|
"\tTotal admitted time = %u\n\n",
|
|
tsid, up,
|
|
MAC2STR(wpa_s->bssid),
|
|
dir_str,
|
|
le_to_host16(tspec->medium_time));
|
|
}
|
|
|
|
if (!ts_count) {
|
|
pos += wpa_scnprintf(buf + pos, buflen - pos,
|
|
"\t(No Traffic Stream)\n\n");
|
|
}
|
|
}
|
|
|
|
return pos;
|
|
}
|
|
|
|
|
|
static u8 wmm_ac_get_tspecs_count(struct wpa_supplicant *wpa_s)
|
|
{
|
|
int ac, dir, tspecs_count = 0;
|
|
|
|
for (ac = 0; ac < WMM_AC_NUM; ac++) {
|
|
for (dir = 0; dir < TS_DIR_IDX_COUNT; dir++) {
|
|
if (wpa_s->tspecs[ac][dir])
|
|
tspecs_count++;
|
|
}
|
|
}
|
|
|
|
return tspecs_count;
|
|
}
|
|
|
|
|
|
void wmm_ac_save_tspecs(struct wpa_supplicant *wpa_s)
|
|
{
|
|
int ac, dir, tspecs_count;
|
|
|
|
wpa_printf(MSG_DEBUG, "WMM AC: Save last configured tspecs");
|
|
|
|
if (!wpa_s->wmm_ac_assoc_info)
|
|
return;
|
|
|
|
tspecs_count = wmm_ac_get_tspecs_count(wpa_s);
|
|
if (!tspecs_count) {
|
|
wpa_printf(MSG_DEBUG, "WMM AC: No configured TSPECs");
|
|
return;
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "WMM AC: Saving tspecs");
|
|
|
|
wmm_ac_clear_saved_tspecs(wpa_s);
|
|
wpa_s->last_tspecs = os_calloc(tspecs_count,
|
|
sizeof(*wpa_s->last_tspecs));
|
|
if (!wpa_s->last_tspecs) {
|
|
wpa_printf(MSG_ERROR, "WMM AC: Failed to save tspecs!");
|
|
return;
|
|
}
|
|
|
|
for (ac = 0; ac < WMM_AC_NUM; ac++) {
|
|
for (dir = 0; dir < TS_DIR_IDX_COUNT; dir++) {
|
|
if (!wpa_s->tspecs[ac][dir])
|
|
continue;
|
|
|
|
wpa_s->last_tspecs[wpa_s->last_tspecs_count++] =
|
|
*wpa_s->tspecs[ac][dir];
|
|
}
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "WMM AC: Successfully saved %d TSPECs",
|
|
wpa_s->last_tspecs_count);
|
|
}
|
|
|
|
|
|
void wmm_ac_clear_saved_tspecs(struct wpa_supplicant *wpa_s)
|
|
{
|
|
if (wpa_s->last_tspecs) {
|
|
wpa_printf(MSG_DEBUG, "WMM AC: Clear saved tspecs");
|
|
os_free(wpa_s->last_tspecs);
|
|
wpa_s->last_tspecs = NULL;
|
|
wpa_s->last_tspecs_count = 0;
|
|
}
|
|
}
|
|
|
|
|
|
int wmm_ac_restore_tspecs(struct wpa_supplicant *wpa_s)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (!wpa_s->wmm_ac_assoc_info || !wpa_s->last_tspecs_count)
|
|
return 0;
|
|
|
|
wpa_printf(MSG_DEBUG, "WMM AC: Restore %u saved tspecs",
|
|
wpa_s->last_tspecs_count);
|
|
|
|
for (i = 0; i < wpa_s->last_tspecs_count; i++)
|
|
wmm_ac_add_ts(wpa_s, wpa_s->bssid, &wpa_s->last_tspecs[i]);
|
|
|
|
return 0;
|
|
}
|