ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/wlantest/rx_data.c b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/wlantest/rx_data.c
new file mode 100644
index 0000000..2a03f5c
--- /dev/null
+++ b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/wlantest/rx_data.c
@@ -0,0 +1,983 @@
+/*
+ * 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);
+
+static void rx_data_vlan(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)
+{
+ u16 tag;
+
+ if (len < 4)
+ return;
+ tag = WPA_GET_BE16(data);
+ wpa_printf(MSG_MSGDUMP, "VLAN tag: Priority=%u ID=%u",
+ tag >> 12, tag & 0x0ffff);
+ /* ignore VLAN information and process the original frame */
+ rx_data_eth(wt, bssid, sta_addr, dst, src, WPA_GET_BE16(data + 2),
+ data + 4, len - 4, prot, peer_addr);
+}
+
+
+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, bssid, sta_addr, 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;
+ case ETH_P_8021Q:
+ rx_data_vlan(wt, bssid, sta_addr, dst, src, data, len, prot,
+ peer_addr);
+ break;
+ }
+}
+
+
+static void rx_data_process(struct wlantest *wt, struct wlantest_bss *bss,
+ 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, const u8 *qos)
+{
+ if (len == 0)
+ return;
+
+ if (bss && bss->mesh && qos && !(qos[0] & BIT(7)) &&
+ (qos[1] & BIT(0))) {
+ u8 addr_ext_mode;
+ size_t mesh_control_len = 6;
+
+ /* Skip Mesh Control field if this is not an A-MSDU */
+ if (len < mesh_control_len) {
+ wpa_printf(MSG_DEBUG,
+ "Not enough room for Mesh Control field");
+ return;
+ }
+
+ addr_ext_mode = data[0] & 0x03;
+ if (addr_ext_mode == 3) {
+ wpa_printf(MSG_DEBUG,
+ "Reserved Mesh Control :: Address Extension Mode");
+ return;
+ }
+
+ mesh_control_len += addr_ext_mode * ETH_ALEN;
+ if (len < mesh_control_len) {
+ wpa_printf(MSG_DEBUG,
+ "Not enough room for Mesh Address Extension");
+ return;
+ }
+
+ len -= mesh_control_len;
+ data += mesh_control_len;
+ }
+
+ 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_ptk(struct wlantest *wt, int pairwise_cipher,
+ struct wpa_ptk *ptk, const struct ieee80211_hdr *hdr,
+ const u8 *a1, const u8 *a2, const u8 *a3,
+ const u8 *data, size_t data_len, size_t *decrypted_len)
+{
+ u8 *decrypted;
+ unsigned int tk_len = ptk->tk_len;
+
+ decrypted = NULL;
+ if ((pairwise_cipher == WPA_CIPHER_CCMP ||
+ pairwise_cipher == 0) && tk_len == 16) {
+ decrypted = ccmp_decrypt(ptk->tk, hdr, a1, a2, a3, data,
+ data_len, decrypted_len);
+ } else if ((pairwise_cipher == WPA_CIPHER_CCMP_256 ||
+ pairwise_cipher == 0) && tk_len == 32) {
+ decrypted = ccmp_256_decrypt(ptk->tk, hdr, a1, a2, a3, 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->tk, tk_len, hdr, a1, a2, a3,
+ data, data_len, decrypted_len);
+ } else if ((pairwise_cipher == WPA_CIPHER_TKIP ||
+ pairwise_cipher == 0) && tk_len == 32) {
+ enum michael_mic_result mic_res;
+
+ decrypted = tkip_decrypt(ptk->tk, hdr, data, data_len,
+ decrypted_len, &mic_res,
+ &wt->tkip_frag);
+ if (decrypted && mic_res == MICHAEL_MIC_INCORRECT)
+ add_note(wt, MSG_INFO, "Invalid Michael MIC");
+ else if (decrypted && mic_res == MICHAEL_MIC_NOT_VERIFIED)
+ add_note(wt, MSG_DEBUG, "Michael MIC not verified");
+ }
+
+ return decrypted;
+}
+
+
+static u8 * try_all_ptk(struct wlantest *wt, int pairwise_cipher,
+ const struct ieee80211_hdr *hdr,
+ const u8 *a1, const u8 *a2, const u8 *a3, int keyid,
+ 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) {
+ decrypted = try_ptk(wt, pairwise_cipher, &ptk->ptk, hdr, a1, a2,
+ a3, 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");
+ write_decrypted_note(wt, decrypted, ptk->ptk.tk,
+ ptk->ptk.tk_len, keyid);
+ return decrypted;
+ }
+ }
+ wpa_debug_level = prev_level;
+
+ return NULL;
+}
+
+
+static void check_plaintext_prot(struct wlantest *wt,
+ const struct ieee80211_hdr *hdr,
+ const u8 *data, size_t len)
+{
+ if (len < 8 + 3 || data[8] != 0xaa || data[9] != 0xaa ||
+ data[10] != 0x03)
+ return;
+
+ add_note(wt, MSG_DEBUG,
+ "Plaintext payload in protected frame");
+ wpa_printf(MSG_INFO, "Plaintext payload in protected frame #%u: A2="
+ MACSTR " seq=%u",
+ wt->frame_num, MAC2STR(hdr->addr2),
+ WLAN_GET_SEQ_SEQ(le_to_host16(hdr->seq_ctrl)));
+}
+
+
+static void rx_data_bss_prot_group(struct wlantest *wt,
+ const struct ieee80211_hdr *hdr,
+ size_t hdrlen,
+ 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];
+ int replay = 0;
+
+ 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));
+ }
+ }
+
+ check_plaintext_prot(wt, hdr, data, len);
+ keyid = data[3] >> 6;
+ if (bss->gtk_len[keyid] == 0 &&
+ (bss->group_cipher != WPA_CIPHER_WEP40 ||
+ dl_list_empty(&wt->wep))) {
+ decrypted = try_all_ptk(wt, bss->group_cipher, hdr, NULL, NULL,
+ NULL, keyid, data, len, &dlen);
+ if (decrypted)
+ goto process;
+ 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);
+ char pn_hex[6 * 2 + 1], rsc_hex[6 * 2 + 1];
+
+ wpa_snprintf_hex(pn_hex, sizeof(pn_hex), pn, 6);
+ wpa_snprintf_hex(rsc_hex, sizeof(rsc_hex), bss->rsc[keyid], 6);
+ add_note(wt, MSG_INFO, "replay detected: A1=" MACSTR
+ " A2=" MACSTR " A3=" MACSTR
+ " seq=%u frag=%u%s keyid=%d #%u %s<=%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" : "",
+ keyid, wt->frame_num, pn_hex, rsc_hex);
+ replay = 1;
+ }
+
+skip_replay_det:
+ if (bss->group_cipher == WPA_CIPHER_TKIP) {
+ enum michael_mic_result mic_res;
+
+ decrypted = tkip_decrypt(bss->gtk[keyid], hdr, data, len,
+ &dlen, &mic_res, &wt->tkip_frag);
+ if (decrypted && mic_res == MICHAEL_MIC_INCORRECT)
+ add_note(wt, MSG_INFO, "Invalid Michael MIC");
+ else if (decrypted && mic_res == MICHAEL_MIC_NOT_VERIFIED)
+ add_note(wt, MSG_DEBUG, "Michael MIC not verified");
+ } 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, NULL, NULL, NULL,
+ data, len, &dlen);
+ } else if (bss->group_cipher == WPA_CIPHER_CCMP_256) {
+ decrypted = ccmp_256_decrypt(bss->gtk[keyid], hdr,
+ NULL, NULL, NULL,
+ 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, NULL, NULL, NULL,
+ data, len, &dlen);
+ }
+
+ if (decrypted) {
+ char gtk[65];
+
+ wpa_snprintf_hex(gtk, sizeof(gtk), bss->gtk[keyid],
+ bss->gtk_len[keyid]);
+ add_note(wt, MSG_EXCESSIVE, "GTK[%d] %s", keyid, gtk);
+ process:
+ rx_data_process(wt, bss, bss->bssid, NULL, dst, src, decrypted,
+ dlen, 1, NULL, qos);
+ if (!replay)
+ os_memcpy(bss->rsc[keyid], pn, 6);
+ write_pcap_decrypted(wt, (const u8 *) hdr, hdrlen,
+ decrypted, dlen);
+ } else {
+ wpa_printf(MSG_DEBUG, "Failed to decrypt frame (group) #%u A2="
+ MACSTR " seq=%u",
+ wt->frame_num, MAC2STR(hdr->addr2),
+ WLAN_GET_SEQ_SEQ(le_to_host16(hdr->seq_ctrl)));
+ add_note(wt, MSG_DEBUG, "Failed to decrypt frame (group)");
+ }
+ os_free(decrypted);
+}
+
+
+static u8 * try_ptk_decrypt(struct wlantest *wt, struct wlantest_sta *sta,
+ const struct ieee80211_hdr *hdr, int keyid,
+ const u8 *data, size_t len,
+ const u8 *tk, size_t tk_len, size_t *dlen)
+{
+ u8 *decrypted = NULL;
+ u16 fc = le_to_host16(hdr->frame_control);
+ const u8 *a1 = NULL, *a2 = NULL, *a3 = NULL;
+
+ if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) &&
+ !is_zero_ether_addr(sta->mld_mac_addr) &&
+ !is_zero_ether_addr(sta->bss->mld_mac_addr)) {
+ if (os_memcmp(hdr->addr1, sta->addr, ETH_ALEN) == 0) {
+ a1 = sta->mld_mac_addr;
+ a2 = sta->bss->mld_mac_addr;
+ } else {
+ a1 = sta->bss->mld_mac_addr;
+ a2 = sta->mld_mac_addr;
+ }
+
+ if (os_memcmp(hdr->addr3, sta->bss->bssid, ETH_ALEN) == 0)
+ a3 = sta->bss->mld_mac_addr;
+ }
+
+ if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256)
+ decrypted = ccmp_256_decrypt(tk, hdr, a1, a2, a3,
+ data, len, dlen);
+ else if (sta->pairwise_cipher == WPA_CIPHER_GCMP ||
+ sta->pairwise_cipher == WPA_CIPHER_GCMP_256)
+ decrypted = gcmp_decrypt(tk, tk_len, hdr, a1, a2, a3,
+ data, len, dlen);
+ else
+ decrypted = ccmp_decrypt(tk, hdr, a1, a2, a3, data, len, dlen);
+ write_decrypted_note(wt, decrypted, tk, tk_len, keyid);
+
+ return decrypted;
+}
+
+
+static void rx_data_bss_prot(struct wlantest *wt,
+ const struct ieee80211_hdr *hdr, size_t hdrlen,
+ const u8 *qos, const u8 *dst, const u8 *src,
+ const u8 *data, size_t len)
+{
+ struct wlantest_bss *bss, *bss2;
+ struct wlantest_sta *sta, *sta2;
+ int keyid;
+ u16 fc = le_to_host16(hdr->frame_control);
+ u8 *decrypted = NULL;
+ size_t dlen;
+ int tid;
+ u8 pn[6], *rsc = NULL;
+ struct wlantest_tdls *tdls = NULL, *found;
+ const u8 *tk = NULL;
+ int ptk_iter_done = 0;
+ int try_ptk_iter = 0;
+ int replay = 0;
+ int only_zero_tk = 0;
+ u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
+ const u8 *a1 = NULL, *a2 = NULL, *a3 = NULL;
+
+ if (hdr->addr1[0] & 0x01) {
+ rx_data_bss_prot_group(wt, hdr, hdrlen, qos, dst, src,
+ data, len);
+ return;
+ }
+
+ if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ bss = bss_find(wt, hdr->addr1);
+ if (bss) {
+ sta = sta_find(bss, hdr->addr2);
+ if (sta) {
+ sta->counters[
+ WLANTEST_STA_COUNTER_PROT_DATA_TX]++;
+ }
+ if (!sta || !sta->ptk_set) {
+ bss2 = bss_find(wt, hdr->addr2);
+ if (bss2) {
+ sta2 = sta_find(bss2, hdr->addr1);
+ if (sta2 && (!sta || sta2->ptk_set)) {
+ bss = bss2;
+ sta = sta2;
+ }
+ }
+ }
+ } else {
+ bss = bss_find(wt, hdr->addr2);
+ if (!bss)
+ return;
+ sta = sta_find(bss, hdr->addr1);
+ }
+ } else if (fc & WLAN_FC_TODS) {
+ bss = bss_get(wt, hdr->addr1);
+ if (bss == NULL)
+ return;
+ sta = sta_find_mlo(wt, bss, hdr->addr2);
+ if (!sta)
+ 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_find_mlo(wt, bss, hdr->addr1);
+ if (!sta)
+ 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;
+ }
+ }
+ check_plaintext_prot(wt, hdr, data, len);
+ 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)) {
+ if (len >= 4 && sta) {
+ keyid = data[3] >> 6;
+ only_zero_tk = 1;
+ goto check_zero_tk;
+ }
+ 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 |
+ WPA_CIPHER_GCMP | WPA_CIPHER_GCMP_256 |
+ WPA_CIPHER_CCMP_256) &&
+ !(data[3] & 0x20)) {
+ add_note(wt, MSG_INFO, "Expected TKIP/CCMP/GCMP 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 ||
+ sta->pairwise_cipher == WPA_CIPHER_GCMP ||
+ sta->pairwise_cipher == WPA_CIPHER_GCMP_256 ||
+ sta->pairwise_cipher == WPA_CIPHER_CCMP_256) {
+ if (data[2] != 0 || (data[3] & 0x1f) != 0) {
+ add_note(wt, MSG_INFO, "CCMP/GCMP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(hdr->addr2));
+ }
+ }
+
+ keyid = data[3] >> 6;
+ if (keyid != 0 &&
+ (!(sta->rsn_capab & WPA_CAPABILITY_EXT_KEY_ID_FOR_UNICAST) ||
+ !(bss->rsn_capab & WPA_CAPABILITY_EXT_KEY_ID_FOR_UNICAST) ||
+ keyid != 1)) {
+ add_note(wt, MSG_INFO,
+ "Unexpected 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 | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ if (os_memcmp(sta->addr, hdr->addr2, ETH_ALEN) == 0)
+ rsc = sta->rsc_tods[tid];
+ else
+ rsc = sta->rsc_fromds[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) {
+ char pn_hex[6 * 2 + 1], rsc_hex[6 * 2 + 1];
+
+ wpa_snprintf_hex(pn_hex, sizeof(pn_hex), pn, 6);
+ wpa_snprintf_hex(rsc_hex, sizeof(rsc_hex), rsc, 6);
+ add_note(wt, MSG_INFO, "replay detected: A1=" MACSTR
+ " A2=" MACSTR " A3=" MACSTR
+ " seq=%u frag=%u%s keyid=%d tid=%d #%u %s<=%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" : "",
+ keyid, tid, wt->frame_num, pn_hex, rsc_hex);
+ replay = 1;
+ }
+
+skip_replay_det:
+ if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) &&
+ !is_zero_ether_addr(sta->mld_mac_addr) &&
+ !is_zero_ether_addr(bss->mld_mac_addr)) {
+ if (os_memcmp(hdr->addr1, sta->addr, ETH_ALEN) == 0) {
+ a1 = sta->mld_mac_addr;
+ a2 = bss->mld_mac_addr;
+ } else {
+ a1 = bss->mld_mac_addr;
+ a2 = sta->mld_mac_addr;
+ }
+
+ if (os_memcmp(hdr->addr3, bss->bssid, ETH_ALEN) == 0)
+ a3 = bss->mld_mac_addr;
+ }
+
+ if (tk) {
+ if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256) {
+ decrypted = ccmp_256_decrypt(tk, hdr, a1, a2, a3,
+ data, len, &dlen);
+ write_decrypted_note(wt, decrypted, tk, 32, keyid);
+ } else if (sta->pairwise_cipher == WPA_CIPHER_GCMP ||
+ sta->pairwise_cipher == WPA_CIPHER_GCMP_256) {
+ decrypted = gcmp_decrypt(tk, sta->ptk.tk_len, hdr,
+ a1, a2, a3, data, len, &dlen);
+ write_decrypted_note(wt, decrypted, tk, sta->ptk.tk_len,
+ keyid);
+ } else {
+ decrypted = ccmp_decrypt(tk, hdr, a1, a2, a3, data, len,
+ &dlen);
+ write_decrypted_note(wt, decrypted, tk, 16, keyid);
+ }
+ } else if (sta->pairwise_cipher == WPA_CIPHER_TKIP) {
+ enum michael_mic_result mic_res;
+
+ decrypted = tkip_decrypt(sta->ptk.tk, hdr, data, len, &dlen,
+ &mic_res, &wt->tkip_frag);
+ if (decrypted && mic_res == MICHAEL_MIC_INCORRECT)
+ add_note(wt, MSG_INFO, "Invalid Michael MIC");
+ else if (decrypted && mic_res == MICHAEL_MIC_NOT_VERIFIED)
+ add_note(wt, MSG_DEBUG, "Michael MIC not verified");
+ write_decrypted_note(wt, decrypted, sta->ptk.tk, 32, keyid);
+ } else if (sta->pairwise_cipher == WPA_CIPHER_WEP40) {
+ decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
+ } else if (sta->ptk_set) {
+ decrypted = try_ptk_decrypt(wt, sta, hdr, keyid, data, len,
+ sta->ptk.tk, sta->ptk.tk_len,
+ &dlen);
+ } else {
+ decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr,
+ a1, a2, a3,
+ keyid, data, len, &dlen);
+ ptk_iter_done = 1;
+ }
+ if (!decrypted && !ptk_iter_done) {
+ decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr,
+ a1, a2, a3,
+ keyid, data, len, &dlen);
+ if (decrypted) {
+ add_note(wt, MSG_DEBUG, "Current PTK did not work, but found a match from all known PTKs");
+ }
+ }
+check_zero_tk:
+ if (!decrypted) {
+ struct wpa_ptk zero_ptk;
+ int old_debug_level = wpa_debug_level;
+
+ os_memset(&zero_ptk, 0, sizeof(zero_ptk));
+ zero_ptk.tk_len = wpa_cipher_key_len(sta->pairwise_cipher);
+ wpa_debug_level = MSG_ERROR;
+ decrypted = try_ptk(wt, sta->pairwise_cipher, &zero_ptk, hdr,
+ a1, a2, a3, data, len, &dlen);
+ wpa_debug_level = old_debug_level;
+ if (decrypted) {
+ add_note(wt, MSG_DEBUG,
+ "Frame was encrypted with zero TK");
+ wpa_printf(MSG_INFO, "Zero TK used in frame #%u: A2="
+ MACSTR " seq=%u",
+ wt->frame_num, MAC2STR(hdr->addr2),
+ WLAN_GET_SEQ_SEQ(
+ le_to_host16(hdr->seq_ctrl)));
+ write_decrypted_note(wt, decrypted, zero_ptk.tk,
+ zero_ptk.tk_len, keyid);
+ }
+ }
+ 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;
+ if (!replay && rsc)
+ os_memcpy(rsc, pn, 6);
+ rx_data_process(wt, bss, bss->bssid, sta->addr, dst, src,
+ decrypted, dlen, 1, peer_addr, qos);
+ write_pcap_decrypted(wt, (const u8 *) hdr, hdrlen,
+ decrypted, dlen);
+ } else if (sta->tptk_set) {
+ /* Check whether TPTK has a matching TK that could be used to
+ * decrypt the frame. That could happen if EAPOL-Key msg 4/4
+ * was missing in the capture and this was PTK rekeying. */
+ decrypted = try_ptk_decrypt(wt, sta, hdr, keyid, data, len,
+ sta->tptk.tk, sta->tptk.tk_len,
+ &dlen);
+ if (decrypted) {
+ add_note(wt, MSG_DEBUG,
+ "Update PTK (rekeying; no valid EAPOL-Key msg 4/4 seen)");
+ os_memcpy(&sta->ptk, &sta->tptk, sizeof(sta->ptk));
+ sta->ptk_set = 1;
+ sta->tptk_set = 0;
+ os_memset(sta->rsc_tods, 0, sizeof(sta->rsc_tods));
+ os_memset(sta->rsc_fromds, 0, sizeof(sta->rsc_fromds));
+ }
+ } else {
+ if (!try_ptk_iter && !only_zero_tk) {
+ wpa_printf(MSG_DEBUG,
+ "Failed to decrypt frame #%u A2=" MACSTR
+ " seq=%u",
+ wt->frame_num, MAC2STR(hdr->addr2),
+ WLAN_GET_SEQ_SEQ(seq_ctrl));
+ add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
+ }
+
+ /* Assume the frame was corrupted and there was no FCS to check.
+ * Allow retry of this particular frame to be processed so that
+ * it could end up getting decrypted if it was received without
+ * corruption. */
+ sta->allow_duplicate = 1;
+ }
+ os_free(decrypted);
+}
+
+
+static void rx_data_bss(struct wlantest *wt, const struct ieee80211_hdr *hdr,
+ size_t hdrlen, 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, hdrlen, 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 = sta_find_mlo(wt, bss, sta_addr);
+ if (!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, bss, bssid, sta_addr, dst, src, data, len,
+ 0, peer_addr, qos);
+ }
+}
+
+
+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 ((fc & WLAN_FC_HTC) && (stype & 0x08))
+ hdrlen += 4; /* HT Control field */
+ 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, hdrlen, 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, hdrlen, 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, hdrlen, 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)));
+ rx_data_bss(wt, hdr, hdrlen, qos, hdr->addr1, hdr->addr2,
+ data + hdrlen, len - hdrlen);
+ break;
+ }
+}