--- /dev/null
+/*
+ * Received Data frame processing
+ * Copyright (c) 2010-2015, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "utils/includes.h"
+
+#include "utils/common.h"
+#include "common/defs.h"
+#include "common/ieee802_11_defs.h"
+#include "wlantest.h"
+
+
+static const char * data_stype(u16 stype)
+{
+ switch (stype) {
+ case WLAN_FC_STYPE_DATA:
+ return "DATA";
+ case WLAN_FC_STYPE_DATA_CFACK:
+ return "DATA-CFACK";
+ case WLAN_FC_STYPE_DATA_CFPOLL:
+ return "DATA-CFPOLL";
+ case WLAN_FC_STYPE_DATA_CFACKPOLL:
+ return "DATA-CFACKPOLL";
+ case WLAN_FC_STYPE_NULLFUNC:
+ return "NULLFUNC";
+ case WLAN_FC_STYPE_CFACK:
+ return "CFACK";
+ case WLAN_FC_STYPE_CFPOLL:
+ return "CFPOLL";
+ case WLAN_FC_STYPE_CFACKPOLL:
+ return "CFACKPOLL";
+ case WLAN_FC_STYPE_QOS_DATA:
+ return "QOSDATA";
+ case WLAN_FC_STYPE_QOS_DATA_CFACK:
+ return "QOSDATA-CFACK";
+ case WLAN_FC_STYPE_QOS_DATA_CFPOLL:
+ return "QOSDATA-CFPOLL";
+ case WLAN_FC_STYPE_QOS_DATA_CFACKPOLL:
+ return "QOSDATA-CFACKPOLL";
+ case WLAN_FC_STYPE_QOS_NULL:
+ return "QOS-NULL";
+ case WLAN_FC_STYPE_QOS_CFPOLL:
+ return "QOS-CFPOLL";
+ case WLAN_FC_STYPE_QOS_CFACKPOLL:
+ return "QOS-CFACKPOLL";
+ }
+ return "??";
+}
+
+
+static void rx_data_eth(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta_addr, const u8 *dst, const u8 *src,
+ u16 ethertype, const u8 *data, size_t len, int prot,
+ const u8 *peer_addr)
+{
+ switch (ethertype) {
+ case ETH_P_PAE:
+ rx_data_eapol(wt, dst, src, data, len, prot);
+ break;
+ case ETH_P_IP:
+ rx_data_ip(wt, bssid, sta_addr, dst, src, data, len,
+ peer_addr);
+ break;
+ case 0x890d:
+ rx_data_80211_encap(wt, bssid, sta_addr, dst, src, data, len);
+ break;
+ }
+}
+
+
+static void rx_data_process(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta_addr,
+ const u8 *dst, const u8 *src,
+ const u8 *data, size_t len, int prot,
+ const u8 *peer_addr)
+{
+ if (len == 0)
+ return;
+
+ if (len >= 8 && os_memcmp(data, "\xaa\xaa\x03\x00\x00\x00", 6) == 0) {
+ rx_data_eth(wt, bssid, sta_addr, dst, src,
+ WPA_GET_BE16(data + 6), data + 8, len - 8, prot,
+ peer_addr);
+ return;
+ }
+
+ wpa_hexdump(MSG_DEBUG, "Unrecognized LLC", data, len > 8 ? 8 : len);
+}
+
+
+static u8 * try_all_ptk(struct wlantest *wt, int pairwise_cipher,
+ const struct ieee80211_hdr *hdr,
+ const u8 *data, size_t data_len, size_t *decrypted_len)
+{
+ struct wlantest_ptk *ptk;
+ u8 *decrypted;
+ int prev_level = wpa_debug_level;
+
+ wpa_debug_level = MSG_WARNING;
+ dl_list_for_each(ptk, &wt->ptk, struct wlantest_ptk, list) {
+ unsigned int tk_len = ptk->ptk_len - 32;
+ decrypted = NULL;
+ if ((pairwise_cipher == WPA_CIPHER_CCMP ||
+ pairwise_cipher == 0) && tk_len == 16) {
+ decrypted = ccmp_decrypt(ptk->ptk.tk, hdr, data,
+ data_len, decrypted_len);
+ } else if ((pairwise_cipher == WPA_CIPHER_CCMP_256 ||
+ pairwise_cipher == 0) && tk_len == 32) {
+ decrypted = ccmp_256_decrypt(ptk->ptk.tk, hdr, data,
+ data_len, decrypted_len);
+ } else if ((pairwise_cipher == WPA_CIPHER_GCMP ||
+ pairwise_cipher == WPA_CIPHER_GCMP_256 ||
+ pairwise_cipher == 0) &&
+ (tk_len == 16 || tk_len == 32)) {
+ decrypted = gcmp_decrypt(ptk->ptk.tk, tk_len, hdr,
+ data, data_len, decrypted_len);
+ } else if ((pairwise_cipher == WPA_CIPHER_TKIP ||
+ pairwise_cipher == 0) && tk_len == 32) {
+ decrypted = tkip_decrypt(ptk->ptk.tk, hdr, data,
+ data_len, decrypted_len);
+ }
+ if (decrypted) {
+ wpa_debug_level = prev_level;
+ add_note(wt, MSG_DEBUG, "Found PTK match from list of all known PTKs");
+ return decrypted;
+ }
+ }
+ wpa_debug_level = prev_level;
+
+ return NULL;
+}
+
+
+static void rx_data_bss_prot_group(struct wlantest *wt,
+ const struct ieee80211_hdr *hdr,
+ const u8 *qos, const u8 *dst, const u8 *src,
+ const u8 *data, size_t len)
+{
+ struct wlantest_bss *bss;
+ int keyid;
+ u8 *decrypted = NULL;
+ size_t dlen;
+ u8 pn[6];
+
+ bss = bss_get(wt, hdr->addr2);
+ if (bss == NULL)
+ return;
+ if (len < 4) {
+ add_note(wt, MSG_INFO, "Too short group addressed data frame");
+ return;
+ }
+
+ if (bss->group_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) &&
+ !(data[3] & 0x20)) {
+ add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from "
+ MACSTR " did not have ExtIV bit set to 1",
+ MAC2STR(bss->bssid));
+ return;
+ }
+
+ if (bss->group_cipher == WPA_CIPHER_TKIP) {
+ if (data[3] & 0x1f) {
+ add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(bss->bssid));
+ }
+ if (data[1] != ((data[0] | 0x20) & 0x7f)) {
+ add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
+ " used incorrect WEPSeed[1] (was 0x%x, "
+ "expected 0x%x)",
+ MAC2STR(bss->bssid), data[1],
+ (data[0] | 0x20) & 0x7f);
+ }
+ } else if (bss->group_cipher == WPA_CIPHER_CCMP) {
+ if (data[2] != 0 || (data[3] & 0x1f) != 0) {
+ add_note(wt, MSG_INFO, "CCMP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(bss->bssid));
+ }
+ }
+
+ keyid = data[3] >> 6;
+ if (bss->gtk_len[keyid] == 0 && bss->group_cipher != WPA_CIPHER_WEP40)
+ {
+ add_note(wt, MSG_MSGDUMP, "No GTK known to decrypt the frame "
+ "(A2=" MACSTR " KeyID=%d)",
+ MAC2STR(hdr->addr2), keyid);
+ return;
+ }
+
+ if (bss->group_cipher == WPA_CIPHER_TKIP)
+ tkip_get_pn(pn, data);
+ else if (bss->group_cipher == WPA_CIPHER_WEP40)
+ goto skip_replay_det;
+ else
+ ccmp_get_pn(pn, data);
+ if (os_memcmp(pn, bss->rsc[keyid], 6) <= 0) {
+ u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
+ add_note(wt, MSG_INFO, "CCMP/TKIP replay detected: A1=" MACSTR
+ " A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u%s",
+ MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
+ MAC2STR(hdr->addr3),
+ WLAN_GET_SEQ_SEQ(seq_ctrl),
+ WLAN_GET_SEQ_FRAG(seq_ctrl),
+ (le_to_host16(hdr->frame_control) & WLAN_FC_RETRY) ?
+ " Retry" : "");
+ wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
+ wpa_hexdump(MSG_INFO, "RSC", bss->rsc[keyid], 6);
+ }
+
+skip_replay_det:
+ if (bss->group_cipher == WPA_CIPHER_TKIP)
+ decrypted = tkip_decrypt(bss->gtk[keyid], hdr, data, len,
+ &dlen);
+ else if (bss->group_cipher == WPA_CIPHER_WEP40)
+ decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
+ else if (bss->group_cipher == WPA_CIPHER_CCMP)
+ decrypted = ccmp_decrypt(bss->gtk[keyid], hdr, data, len,
+ &dlen);
+ else if (bss->group_cipher == WPA_CIPHER_CCMP_256)
+ decrypted = ccmp_256_decrypt(bss->gtk[keyid], hdr, data, len,
+ &dlen);
+ else if (bss->group_cipher == WPA_CIPHER_GCMP ||
+ bss->group_cipher == WPA_CIPHER_GCMP_256)
+ decrypted = gcmp_decrypt(bss->gtk[keyid], bss->gtk_len[keyid],
+ hdr, data, len, &dlen);
+
+ if (decrypted) {
+ rx_data_process(wt, bss->bssid, NULL, dst, src, decrypted,
+ dlen, 1, NULL);
+ os_memcpy(bss->rsc[keyid], pn, 6);
+ write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
+ decrypted, dlen);
+ } else
+ add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
+ os_free(decrypted);
+}
+
+
+static void rx_data_bss_prot(struct wlantest *wt,
+ const struct ieee80211_hdr *hdr, const u8 *qos,
+ const u8 *dst, const u8 *src, const u8 *data,
+ size_t len)
+{
+ struct wlantest_bss *bss;
+ struct wlantest_sta *sta, *sta2;
+ int keyid;
+ u16 fc = le_to_host16(hdr->frame_control);
+ u8 *decrypted;
+ size_t dlen;
+ int tid;
+ u8 pn[6], *rsc;
+ struct wlantest_tdls *tdls = NULL, *found;
+ const u8 *tk = NULL;
+ int ptk_iter_done = 0;
+ int try_ptk_iter = 0;
+
+ if (hdr->addr1[0] & 0x01) {
+ rx_data_bss_prot_group(wt, hdr, qos, dst, src, data, len);
+ return;
+ }
+
+ if (fc & WLAN_FC_TODS) {
+ bss = bss_get(wt, hdr->addr1);
+ if (bss == NULL)
+ return;
+ sta = sta_get(bss, hdr->addr2);
+ if (sta)
+ sta->counters[WLANTEST_STA_COUNTER_PROT_DATA_TX]++;
+ } else if (fc & WLAN_FC_FROMDS) {
+ bss = bss_get(wt, hdr->addr2);
+ if (bss == NULL)
+ return;
+ sta = sta_get(bss, hdr->addr1);
+ } else {
+ bss = bss_get(wt, hdr->addr3);
+ if (bss == NULL)
+ return;
+ sta = sta_find(bss, hdr->addr2);
+ sta2 = sta_find(bss, hdr->addr1);
+ if (sta == NULL || sta2 == NULL)
+ return;
+ found = NULL;
+ dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list)
+ {
+ if ((tdls->init == sta && tdls->resp == sta2) ||
+ (tdls->init == sta2 && tdls->resp == sta)) {
+ found = tdls;
+ if (tdls->link_up)
+ break;
+ }
+ }
+ if (found) {
+ if (!found->link_up)
+ add_note(wt, MSG_DEBUG,
+ "TDLS: Link not up, but Data "
+ "frame seen");
+ tk = found->tpk.tk;
+ tdls = found;
+ }
+ }
+ if ((sta == NULL ||
+ (!sta->ptk_set && sta->pairwise_cipher != WPA_CIPHER_WEP40)) &&
+ tk == NULL) {
+ add_note(wt, MSG_MSGDUMP, "No PTK known to decrypt the frame");
+ if (dl_list_empty(&wt->ptk))
+ return;
+ try_ptk_iter = 1;
+ }
+
+ if (len < 4) {
+ add_note(wt, MSG_INFO, "Too short encrypted data frame");
+ return;
+ }
+
+ if (sta == NULL)
+ return;
+ if (sta->pairwise_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) &&
+ !(data[3] & 0x20)) {
+ add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from "
+ MACSTR " did not have ExtIV bit set to 1",
+ MAC2STR(src));
+ return;
+ }
+
+ if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP) {
+ if (data[3] & 0x1f) {
+ add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(hdr->addr2));
+ }
+ if (data[1] != ((data[0] | 0x20) & 0x7f)) {
+ add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
+ " used incorrect WEPSeed[1] (was 0x%x, "
+ "expected 0x%x)",
+ MAC2STR(hdr->addr2), data[1],
+ (data[0] | 0x20) & 0x7f);
+ }
+ } else if (tk || sta->pairwise_cipher == WPA_CIPHER_CCMP) {
+ if (data[2] != 0 || (data[3] & 0x1f) != 0) {
+ add_note(wt, MSG_INFO, "CCMP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(hdr->addr2));
+ }
+ }
+
+ keyid = data[3] >> 6;
+ if (keyid != 0) {
+ add_note(wt, MSG_INFO, "Unexpected non-zero KeyID %d in "
+ "individually addressed Data frame from " MACSTR,
+ keyid, MAC2STR(hdr->addr2));
+ }
+
+ if (qos) {
+ tid = qos[0] & 0x0f;
+ if (fc & WLAN_FC_TODS)
+ sta->tx_tid[tid]++;
+ else
+ sta->rx_tid[tid]++;
+ } else {
+ tid = 0;
+ if (fc & WLAN_FC_TODS)
+ sta->tx_tid[16]++;
+ else
+ sta->rx_tid[16]++;
+ }
+ if (tk) {
+ if (os_memcmp(hdr->addr2, tdls->init->addr, ETH_ALEN) == 0)
+ rsc = tdls->rsc_init[tid];
+ else
+ rsc = tdls->rsc_resp[tid];
+ } else if (fc & WLAN_FC_TODS)
+ rsc = sta->rsc_tods[tid];
+ else
+ rsc = sta->rsc_fromds[tid];
+
+
+ if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP)
+ tkip_get_pn(pn, data);
+ else if (sta->pairwise_cipher == WPA_CIPHER_WEP40)
+ goto skip_replay_det;
+ else
+ ccmp_get_pn(pn, data);
+ if (os_memcmp(pn, rsc, 6) <= 0) {
+ u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
+ add_note(wt, MSG_INFO, "CCMP/TKIP replay detected: A1=" MACSTR
+ " A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u%s",
+ MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
+ MAC2STR(hdr->addr3),
+ WLAN_GET_SEQ_SEQ(seq_ctrl),
+ WLAN_GET_SEQ_FRAG(seq_ctrl),
+ (le_to_host16(hdr->frame_control) & WLAN_FC_RETRY) ?
+ " Retry" : "");
+ wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
+ wpa_hexdump(MSG_INFO, "RSC", rsc, 6);
+ }
+
+skip_replay_det:
+ if (tk) {
+ if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256)
+ decrypted = ccmp_256_decrypt(tk, hdr, data, len, &dlen);
+ else if (sta->pairwise_cipher == WPA_CIPHER_GCMP ||
+ sta->pairwise_cipher == WPA_CIPHER_GCMP_256)
+ decrypted = gcmp_decrypt(tk, sta->tk_len, hdr, data,
+ len, &dlen);
+ else
+ decrypted = ccmp_decrypt(tk, hdr, data, len, &dlen);
+ } else if (sta->pairwise_cipher == WPA_CIPHER_TKIP) {
+ decrypted = tkip_decrypt(sta->ptk.tk, hdr, data, len, &dlen);
+ } else if (sta->pairwise_cipher == WPA_CIPHER_WEP40) {
+ decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
+ } else if (sta->ptk_set) {
+ if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256)
+ decrypted = ccmp_256_decrypt(sta->ptk.tk, hdr, data,
+ len, &dlen);
+ else if (sta->pairwise_cipher == WPA_CIPHER_GCMP ||
+ sta->pairwise_cipher == WPA_CIPHER_GCMP_256)
+ decrypted = gcmp_decrypt(sta->ptk.tk, sta->tk_len,
+ hdr, data, len, &dlen);
+ else
+ decrypted = ccmp_decrypt(sta->ptk.tk, hdr, data, len,
+ &dlen);
+ } else {
+ decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, data,
+ len, &dlen);
+ ptk_iter_done = 1;
+ }
+ if (!decrypted && !ptk_iter_done) {
+ decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, data,
+ len, &dlen);
+ if (decrypted) {
+ add_note(wt, MSG_DEBUG, "Current PTK did not work, but found a match from all known PTKs");
+ }
+ }
+ if (decrypted) {
+ u16 fc = le_to_host16(hdr->frame_control);
+ const u8 *peer_addr = NULL;
+ if (!(fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)))
+ peer_addr = hdr->addr1;
+ os_memcpy(rsc, pn, 6);
+ rx_data_process(wt, bss->bssid, sta->addr, dst, src, decrypted,
+ dlen, 1, peer_addr);
+ write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
+ decrypted, dlen);
+ } else if (!try_ptk_iter)
+ add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
+ os_free(decrypted);
+}
+
+
+static void rx_data_bss(struct wlantest *wt, const struct ieee80211_hdr *hdr,
+ const u8 *qos, const u8 *dst, const u8 *src,
+ const u8 *data, size_t len)
+{
+ u16 fc = le_to_host16(hdr->frame_control);
+ int prot = !!(fc & WLAN_FC_ISWEP);
+
+ if (qos) {
+ u8 ack = (qos[0] & 0x60) >> 5;
+ wpa_printf(MSG_MSGDUMP, "BSS DATA: " MACSTR " -> " MACSTR
+ " len=%u%s tid=%u%s%s",
+ MAC2STR(src), MAC2STR(dst), (unsigned int) len,
+ prot ? " Prot" : "", qos[0] & 0x0f,
+ (qos[0] & 0x10) ? " EOSP" : "",
+ ack == 0 ? "" :
+ (ack == 1 ? " NoAck" :
+ (ack == 2 ? " NoExpAck" : " BA")));
+ } else {
+ wpa_printf(MSG_MSGDUMP, "BSS DATA: " MACSTR " -> " MACSTR
+ " len=%u%s",
+ MAC2STR(src), MAC2STR(dst), (unsigned int) len,
+ prot ? " Prot" : "");
+ }
+
+ if (prot)
+ rx_data_bss_prot(wt, hdr, qos, dst, src, data, len);
+ else {
+ const u8 *bssid, *sta_addr, *peer_addr;
+ struct wlantest_bss *bss;
+
+ if (fc & WLAN_FC_TODS) {
+ bssid = hdr->addr1;
+ sta_addr = hdr->addr2;
+ peer_addr = NULL;
+ } else if (fc & WLAN_FC_FROMDS) {
+ bssid = hdr->addr2;
+ sta_addr = hdr->addr1;
+ peer_addr = NULL;
+ } else {
+ bssid = hdr->addr3;
+ sta_addr = hdr->addr2;
+ peer_addr = hdr->addr1;
+ }
+
+ bss = bss_get(wt, bssid);
+ if (bss) {
+ struct wlantest_sta *sta = sta_get(bss, sta_addr);
+
+ if (sta) {
+ if (qos) {
+ int tid = qos[0] & 0x0f;
+ if (fc & WLAN_FC_TODS)
+ sta->tx_tid[tid]++;
+ else
+ sta->rx_tid[tid]++;
+ } else {
+ if (fc & WLAN_FC_TODS)
+ sta->tx_tid[16]++;
+ else
+ sta->rx_tid[16]++;
+ }
+ }
+ }
+
+ rx_data_process(wt, bssid, sta_addr, dst, src, data, len, 0,
+ peer_addr);
+ }
+}
+
+
+static struct wlantest_tdls * get_tdls(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta1_addr,
+ const u8 *sta2_addr)
+{
+ struct wlantest_bss *bss;
+ struct wlantest_sta *sta1, *sta2;
+ struct wlantest_tdls *tdls, *found = NULL;
+
+ bss = bss_find(wt, bssid);
+ if (bss == NULL)
+ return NULL;
+ sta1 = sta_find(bss, sta1_addr);
+ if (sta1 == NULL)
+ return NULL;
+ sta2 = sta_find(bss, sta2_addr);
+ if (sta2 == NULL)
+ return NULL;
+
+ dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
+ if ((tdls->init == sta1 && tdls->resp == sta2) ||
+ (tdls->init == sta2 && tdls->resp == sta1)) {
+ found = tdls;
+ if (tdls->link_up)
+ break;
+ }
+ }
+
+ return found;
+}
+
+
+static void add_direct_link(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta1_addr, const u8 *sta2_addr)
+{
+ struct wlantest_tdls *tdls;
+
+ tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr);
+ if (tdls == NULL)
+ return;
+
+ if (tdls->link_up)
+ tdls->counters[WLANTEST_TDLS_COUNTER_VALID_DIRECT_LINK]++;
+ else
+ tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_DIRECT_LINK]++;
+}
+
+
+static void add_ap_path(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta1_addr, const u8 *sta2_addr)
+{
+ struct wlantest_tdls *tdls;
+
+ tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr);
+ if (tdls == NULL)
+ return;
+
+ if (tdls->link_up)
+ tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_AP_PATH]++;
+ else
+ tdls->counters[WLANTEST_TDLS_COUNTER_VALID_AP_PATH]++;
+}
+
+
+void rx_data(struct wlantest *wt, const u8 *data, size_t len)
+{
+ const struct ieee80211_hdr *hdr;
+ u16 fc, stype;
+ size_t hdrlen;
+ const u8 *qos = NULL;
+
+ if (len < 24)
+ return;
+
+ hdr = (const struct ieee80211_hdr *) data;
+ fc = le_to_host16(hdr->frame_control);
+ stype = WLAN_FC_GET_STYPE(fc);
+ hdrlen = 24;
+ if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS))
+ hdrlen += ETH_ALEN;
+ if (stype & 0x08) {
+ qos = data + hdrlen;
+ hdrlen += 2;
+ }
+ if (len < hdrlen)
+ return;
+ wt->rx_data++;
+
+ switch (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ case 0:
+ wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s IBSS DA=" MACSTR " SA="
+ MACSTR " BSSID=" MACSTR,
+ data_stype(WLAN_FC_GET_STYPE(fc)),
+ fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
+ fc & WLAN_FC_ISWEP ? " Prot" : "",
+ MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
+ MAC2STR(hdr->addr3));
+ add_direct_link(wt, hdr->addr3, hdr->addr1, hdr->addr2);
+ rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr2,
+ data + hdrlen, len - hdrlen);
+ break;
+ case WLAN_FC_FROMDS:
+ wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s FromDS DA=" MACSTR
+ " BSSID=" MACSTR " SA=" MACSTR,
+ data_stype(WLAN_FC_GET_STYPE(fc)),
+ fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
+ fc & WLAN_FC_ISWEP ? " Prot" : "",
+ MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
+ MAC2STR(hdr->addr3));
+ add_ap_path(wt, hdr->addr2, hdr->addr1, hdr->addr3);
+ rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr3,
+ data + hdrlen, len - hdrlen);
+ break;
+ case WLAN_FC_TODS:
+ wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s ToDS BSSID=" MACSTR
+ " SA=" MACSTR " DA=" MACSTR,
+ data_stype(WLAN_FC_GET_STYPE(fc)),
+ fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
+ fc & WLAN_FC_ISWEP ? " Prot" : "",
+ MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
+ MAC2STR(hdr->addr3));
+ add_ap_path(wt, hdr->addr1, hdr->addr3, hdr->addr2);
+ rx_data_bss(wt, hdr, qos, hdr->addr3, hdr->addr2,
+ data + hdrlen, len - hdrlen);
+ break;
+ case WLAN_FC_TODS | WLAN_FC_FROMDS:
+ wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s WDS RA=" MACSTR " TA="
+ MACSTR " DA=" MACSTR " SA=" MACSTR,
+ data_stype(WLAN_FC_GET_STYPE(fc)),
+ fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
+ fc & WLAN_FC_ISWEP ? " Prot" : "",
+ MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
+ MAC2STR(hdr->addr3),
+ MAC2STR((const u8 *) (hdr + 1)));
+ break;
+ }
+}
projects / mech_eap.git / blobdiff