/*
* Driver interaction with Linux nl80211/cfg80211
- * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2003-2004, Instant802 Networks, Inc.
+ * Copyright (c) 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (c) 2009, Atheros Communications
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#define IF_OPER_UP 6
#endif
+enum ieee80211_msg_type {
+ ieee80211_msg_normal = 0,
+ ieee80211_msg_tx_callback_ack = 1,
+ ieee80211_msg_tx_callback_fail = 2,
+};
+
struct i802_bss {
struct i802_bss *next;
char ifname[IFNAMSIZ + 1];
#ifdef HOSTAPD
struct hostapd_data *hapd;
- int wext_sock; /* socket for wireless events */
int eapol_sock; /* socket for EAPOL frames */
int monitor_sock; /* socket for monitor */
int monitor_ifidx;
int *if_indices;
int num_if_indices;
- int we_version;
int beacon_int;
struct i802_bss bss;
unsigned int ht_40mhz_scan:1;
int ifidx);
#endif /* CONFIG_AP */
-
#ifdef HOSTAPD
-#define wpa_supplicant_event(c, e, d) do { } while (0)
+static void handle_frame(struct wpa_driver_nl80211_data *drv,
+ u8 *buf, size_t len,
+ struct hostapd_frame_info *hfi,
+ enum ieee80211_msg_type msg_type);
#endif /* HOSTAPD */
+
/* nl80211 code */
static int ack_handler(struct nl_msg *msg, void *arg)
{
return NL_SKIP;
}
+
+static int no_seq_check(struct nl_msg *msg, void *arg)
+{
+ return NL_OK;
+}
+
+
static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
struct nl_msg *msg,
int (*valid_handler)(struct nl_msg *, void *),
}
+#ifndef HOSTAPD
static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
void *ctx, char *buf, size_t len,
int del)
}
-static int no_seq_check(struct nl_msg *msg, void *arg)
-{
- return NL_OK;
-}
-
-
static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
const u8 *frame, size_t len)
{
}
}
+#endif /* HOSTAPD */
+
+
+static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
+ struct nlattr *tb[])
+{
+#ifdef HOSTAPD
+ if (tb[NL80211_ATTR_MAC])
+ hostapd_michael_mic_failure(drv->hapd,
+ nla_data(tb[NL80211_ATTR_MAC]));
+#else /* HOSTAPD */
+ union wpa_event_data data;
+
+ wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
+ os_memset(&data, 0, sizeof(data));
+ if (tb[NL80211_ATTR_MAC]) {
+ wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
+ nla_data(tb[NL80211_ATTR_MAC]),
+ nla_len(tb[NL80211_ATTR_MAC]));
+ }
+ if (tb[NL80211_ATTR_KEY_SEQ]) {
+ wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
+ nla_data(tb[NL80211_ATTR_KEY_SEQ]),
+ nla_len(tb[NL80211_ATTR_KEY_SEQ]));
+ }
+ if (tb[NL80211_ATTR_KEY_TYPE]) {
+ enum nl80211_key_type key_type =
+ nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
+ wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
+ if (key_type == NL80211_KEYTYPE_PAIRWISE)
+ data.michael_mic_failure.unicast = 1;
+ } else
+ data.michael_mic_failure.unicast = 1;
+
+ if (tb[NL80211_ATTR_KEY_IDX]) {
+ u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
+ wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
+ }
+
+ wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
+#endif /* HOSTAPD */
+}
+
static int process_event(struct nl_msg *msg, void *arg)
{
}
switch (gnlh->cmd) {
+#ifndef HOSTAPD
case NL80211_CMD_NEW_SCAN_RESULTS:
wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
drv->scan_complete_events = 1;
case NL80211_CMD_DISASSOCIATE:
mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME]);
break;
+#endif /* HOSTAPD */
+ case NL80211_CMD_MICHAEL_MIC_FAILURE:
+ mlme_event_michael_mic_failure(drv, tb);
+ break;
default:
wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
"(cmd=%d)", gnlh->cmd);
msg = nlmsg_alloc();
if (!msg)
- goto nla_put_failure;
+ return -ENOMEM;
alpha2[0] = alpha2_arg[0];
alpha2[1] = alpha2_arg[1];
goto err6;
}
+#ifndef HOSTAPD
eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_link, drv,
ctx);
+#endif /* HOSTAPD */
drv->link_event_sock = s;
if (wpa_driver_nl80211_finish_drv_init(drv))
static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
{
wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
+#ifndef HOSTAPD
wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
+#endif /* HOSTAPD */
}
}
-static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg,
- const u8 *addr, int key_idx,
- int set_tx, const u8 *seq,
- size_t seq_len,
- const u8 *key, size_t key_len)
+static int nl_set_encr(int ifindex, struct wpa_driver_nl80211_data *drv,
+ wpa_alg alg, const u8 *addr, int key_idx, int set_tx,
+ const u8 *seq, size_t seq_len,
+ const u8 *key, size_t key_len)
{
- struct wpa_driver_nl80211_data *drv = priv;
- int err;
struct nl_msg *msg;
+ int ret;
- wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
- "seq_len=%lu key_len=%lu",
- __func__, alg, addr, key_idx, set_tx,
+ wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
+ "set_tx=%d seq_len=%lu key_len=%lu",
+ __func__, ifindex, alg, addr, key_idx, set_tx,
(unsigned long) seq_len, (unsigned long) key_len);
msg = nlmsg_alloc();
- if (msg == NULL)
- return -1;
+ if (!msg)
+ return -ENOMEM;
if (alg == WPA_ALG_NONE) {
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
- NL80211_CMD_DEL_KEY, 0);
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_DEL_KEY, 0);
} else {
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
- NL80211_CMD_NEW_KEY, 0);
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_NEW_KEY, 0);
NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
switch (alg) {
case WPA_ALG_WEP:
case WPA_ALG_CCMP:
NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
break;
-#ifdef CONFIG_IEEE80211W
case WPA_ALG_IGTK:
NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
break;
-#endif /* CONFIG_IEEE80211W */
default:
+ wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
+ "algorithm %d", __func__, alg);
nlmsg_free(msg);
return -1;
}
}
+ if (seq)
+ NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
+
if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
{
wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
}
NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
- err = send_and_recv_msgs(drv, msg, NULL, NULL);
- if (err) {
- wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d", err);
- return -1;
- }
+ ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+ if (ret == -ENOENT && alg == WPA_ALG_NONE)
+ ret = 0;
+ if (ret)
+ wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
+ ret, strerror(-ret));
- if (set_tx && alg != WPA_ALG_NONE) {
- msg = nlmsg_alloc();
- if (msg == NULL)
- return -1;
+ /*
+ * If we failed or don't need to set the default TX key (below),
+ * we're done here.
+ */
+ if (ret || !set_tx || alg == WPA_ALG_NONE)
+ return ret;
+#ifdef HOSTAPD /* FIX: is this needed? */
+ if (addr)
+ return ret;
+#endif /* HOSTAPD */
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
- 0, NL80211_CMD_SET_KEY, 0);
- NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
- NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
- err = send_and_recv_msgs(drv, msg, NULL, NULL);
- if (err) {
- wpa_printf(MSG_DEBUG, "nl80211: set default key "
- "failed; err=%d", err);
- return -1;
- }
- }
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_KEY, 0);
+ NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
+ if (alg == WPA_ALG_IGTK)
+ NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
+ else
+ NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
- return 0;
+ ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+ if (ret == -ENOENT)
+ ret = 0;
+ if (ret)
+ wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
+ "err=%d %s)", ret, strerror(-ret));
+ return ret;
nla_put_failure:
return -ENOBUFS;
}
+static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg,
+ const u8 *addr, int key_idx,
+ int set_tx, const u8 *seq,
+ size_t seq_len,
+ const u8 *key, size_t key_len)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ return nl_set_encr(drv->ifindex, drv, alg, addr, key_idx, set_tx, seq,
+ seq_len, key, key_len);
+}
+
+
static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
const u8 *addr, int cmd, u16 reason_code)
{
return NULL;
}
-#endif /* CONFIG_AP || HOSTAPD */
-
-
-#ifdef CONFIG_AP
static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
const void *data, size_t len,
!do_not_encrypt);
}
+#endif /* CONFIG_AP || HOSTAPD */
+
+
+#ifdef CONFIG_AP
static int wpa_driver_nl80211_set_beacon(void *priv,
const u8 *head, size_t head_len,
}
-enum ieee80211_msg_type {
- ieee80211_msg_normal = 0,
- ieee80211_msg_tx_callback_ack = 1,
- ieee80211_msg_tx_callback_fail = 2,
-};
-
-
void ap_tx_status(void *ctx, const u8 *addr,
const u8 *buf, size_t len, int ack);
void ap_rx_from_unknown_sta(void *ctx, const u8 *addr);
struct hostapd_frame_info *fi);
void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok);
+#endif /* CONFIG_AP */
+
+#if defined(CONFIG_AP) || defined(HOSTAPD)
static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
{
case WLAN_FC_TYPE_MGMT:
wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
ok ? "ACK" : "fail");
+#ifdef HOSTAPD
+ hostapd_mgmt_tx_cb(ctx, buf, len, stype, ok);
+#else /* HOSTAPD */
ap_mgmt_tx_cb(ctx, buf, len, stype, ok);
+#endif /* HOSTAPD */
break;
case WLAN_FC_TYPE_CTRL:
wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
ok ? "ACK" : "fail");
break;
case WLAN_FC_TYPE_DATA:
+#ifdef HOSTAPD
+ hostapd_tx_status(ctx, hdr->addr1, buf, len, ok);
+#else /* HOSTAPD */
ap_tx_status(ctx, hdr->addr1, buf, len, ok);
+#endif /* HOSTAPD */
break;
default:
wpa_printf(MSG_DEBUG, "unknown TX callback frame type %d",
}
}
+#endif /* CONFIG_AP || HOSTAPD */
+
+#ifdef CONFIG_AP
static void handle_frame(struct wpa_driver_nl80211_data *drv,
u8 *buf, size_t len,
}
}
+#endif /* CONFIG_AP */
+
+#if defined(CONFIG_AP) || defined(HOSTAPD)
static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
{
return 0;
}
+#endif /* CONFIG_AP || HOSTAPD */
+
+#ifdef CONFIG_AP
static int
nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
-enum ieee80211_msg_type {
- ieee80211_msg_normal = 0,
- ieee80211_msg_tx_callback_ack = 1,
- ieee80211_msg_tx_callback_fail = 2,
-};
-
-
static int i802_sta_deauth(void *priv, const u8 *addr, int reason);
static int i802_sta_disassoc(void *priv, const u8 *addr, int reason);
}
-static int nl_set_encr(int ifindex, struct wpa_driver_nl80211_data *drv,
- wpa_alg alg, const u8 *addr, int idx, const u8 *key,
- size_t key_len, int txkey)
-{
- struct nl_msg *msg;
- int ret;
-
- msg = nlmsg_alloc();
- if (!msg)
- return -ENOMEM;
-
- if (alg == WPA_ALG_NONE) {
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
- 0, NL80211_CMD_DEL_KEY, 0);
- } else {
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
- 0, NL80211_CMD_NEW_KEY, 0);
- NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
- switch (alg) {
- case WPA_ALG_WEP:
- if (key_len == 5)
- NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
- 0x000FAC01);
- else
- NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
- 0x000FAC05);
- break;
- case WPA_ALG_TKIP:
- NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
- break;
- case WPA_ALG_CCMP:
- NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
- break;
- case WPA_ALG_IGTK:
- NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
- break;
- default:
- wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
- "algorithm %d", __func__, alg);
- nlmsg_free(msg);
- return -1;
- }
- }
-
- if (addr)
- NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
- NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
-
- ret = send_and_recv_msgs(drv, msg, NULL, NULL);
- if (ret == -ENOENT)
- ret = 0;
-
- /*
- * If we failed or don't need to set the default TX key (below),
- * we're done here.
- */
- if (ret || !txkey || addr)
- return ret;
-
- msg = nlmsg_alloc();
- if (!msg)
- return -ENOMEM;
-
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
- 0, NL80211_CMD_SET_KEY, 0);
- NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
- if (alg == WPA_ALG_IGTK)
- NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
- else
- NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
-
- ret = send_and_recv_msgs(drv, msg, NULL, NULL);
- if (ret == -ENOENT)
- ret = 0;
- return ret;
- nla_put_failure:
- return -ENOBUFS;
-}
-
-
static int i802_set_key(const char *iface, void *priv, wpa_alg alg,
const u8 *addr, int key_idx, int set_tx, const u8 *seq,
size_t seq_len, const u8 *key, size_t key_len)
{
struct wpa_driver_nl80211_data *drv = priv;
- int ret;
-
- ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, key_idx, key,
- key_len, set_tx);
- if (ret < 0)
- return ret;
-
- return ret;
+ return nl_set_encr(if_nametoindex(iface), drv, alg, addr, key_idx,
+ set_tx, seq, seq_len, key, key_len);
}
}
-static int i802_send_frame(void *priv, const void *data, size_t len,
- int encrypt, int flags)
-{
- __u8 rtap_hdr[] = {
- 0x00, 0x00, /* radiotap version */
- 0x0e, 0x00, /* radiotap length */
- 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
- IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
- 0x00, /* padding */
- 0x00, 0x00, /* RX and TX flags to indicate that */
- 0x00, 0x00, /* this is the injected frame directly */
- };
- struct wpa_driver_nl80211_data *drv = priv;
- struct iovec iov[2] = {
- {
- .iov_base = &rtap_hdr,
- .iov_len = sizeof(rtap_hdr),
- },
- {
- .iov_base = (void*)data,
- .iov_len = len,
- }
- };
- struct msghdr msg = {
- .msg_name = NULL,
- .msg_namelen = 0,
- .msg_iov = iov,
- .msg_iovlen = 2,
- .msg_control = NULL,
- .msg_controllen = 0,
- .msg_flags = 0,
- };
-
- if (encrypt)
- rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
-
- return sendmsg(drv->monitor_sock, &msg, flags);
-}
-
-static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
- int flags)
-{
- struct ieee80211_mgmt *mgmt;
- int do_not_encrypt = 0;
- u16 fc;
-
- mgmt = (struct ieee80211_mgmt *) data;
- fc = le_to_host16(mgmt->frame_control);
-
- if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
- WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
- /*
- * Only one of the authentication frame types is encrypted.
- * In order for static WEP encryption to work properly (i.e.,
- * to not encrypt the frame), we need to tell mac80211 about
- * the frames that must not be encrypted.
- */
- u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
- u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
- if (auth_alg == WLAN_AUTH_OPEN ||
- (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
- do_not_encrypt = 1;
- }
-
- return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
-}
-
-/* Set kernel driver on given frequency (MHz) */
-static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
+/* Set kernel driver on given frequency (MHz) */
+static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
{
struct wpa_driver_nl80211_data *drv = priv;
struct nl_msg *msg;
pos += 2;
memcpy(pos, data, data_len);
- res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
- free(hdr);
-
+ res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
if (res < 0) {
- perror("i802_send_eapol: send");
- printf("i802_send_eapol - packet len: %lu - failed\n",
- (unsigned long) len);
+ wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
+ "failed: %d (%s)",
+ (unsigned long) len, errno, strerror(errno));
}
+ free(hdr);
return res;
}
}
-static int i802_set_country(void *priv, const char *country)
-{
- struct wpa_driver_nl80211_data *drv = priv;
- struct nl_msg *msg;
- char alpha2[3];
-
- msg = nlmsg_alloc();
- if (!msg)
- return -ENOMEM;
-
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
- 0, NL80211_CMD_REQ_SET_REG, 0);
-
- alpha2[0] = country[0];
- alpha2[1] = country[1];
- alpha2[2] = '\0';
- NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
-
- return send_and_recv_msgs(drv, msg, NULL, NULL);
- nla_put_failure:
- return -ENOBUFS;
-}
-
-
-static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
- int ok)
-{
- struct ieee80211_hdr *hdr;
- u16 fc, type, stype;
-
- hdr = (struct ieee80211_hdr *) buf;
- fc = le_to_host16(hdr->frame_control);
-
- type = WLAN_FC_GET_TYPE(fc);
- stype = WLAN_FC_GET_STYPE(fc);
-
- switch (type) {
- case WLAN_FC_TYPE_MGMT:
- wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
- ok ? "ACK" : "fail");
- hostapd_mgmt_tx_cb(hapd, buf, len, stype, ok);
- break;
- case WLAN_FC_TYPE_CTRL:
- wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
- ok ? "ACK" : "fail");
- break;
- case WLAN_FC_TYPE_DATA:
- hostapd_tx_status(hapd, hdr->addr1, buf, len, ok);
- break;
- default:
- printf("unknown TX callback frame type %d\n", type);
- break;
- }
-}
-
-
static void handle_frame(struct wpa_driver_nl80211_data *drv,
- struct hostapd_iface *iface, u8 *buf, size_t len,
+ u8 *buf, size_t len,
struct hostapd_frame_info *hfi,
enum ieee80211_msg_type msg_type)
{
+ struct hostapd_iface *iface = drv->hapd->iface;
struct ieee80211_hdr *hdr;
u16 fc, type, stype;
size_t data_len = len;
}
-static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
-{
- struct wpa_driver_nl80211_data *drv = eloop_ctx;
- int len;
- unsigned char buf[3000];
- struct hostapd_data *hapd = drv->hapd;
- struct ieee80211_radiotap_iterator iter;
- int ret;
- struct hostapd_frame_info hfi;
- int injected = 0, failed = 0, msg_type, rxflags = 0;
-
- len = recv(sock, buf, sizeof(buf), 0);
- if (len < 0) {
- perror("recv");
- return;
- }
-
- if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
- printf("received invalid radiotap frame\n");
- return;
- }
-
- memset(&hfi, 0, sizeof(hfi));
-
- while (1) {
- ret = ieee80211_radiotap_iterator_next(&iter);
- if (ret == -ENOENT)
- break;
- if (ret) {
- printf("received invalid radiotap frame (%d)\n", ret);
- return;
- }
- switch (iter.this_arg_index) {
- case IEEE80211_RADIOTAP_FLAGS:
- if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
- len -= 4;
- break;
- case IEEE80211_RADIOTAP_RX_FLAGS:
- rxflags = 1;
- break;
- case IEEE80211_RADIOTAP_TX_FLAGS:
- injected = 1;
- failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
- IEEE80211_RADIOTAP_F_TX_FAIL;
- break;
- case IEEE80211_RADIOTAP_DATA_RETRIES:
- break;
- case IEEE80211_RADIOTAP_CHANNEL:
- /* TODO convert from freq/flags to channel number
- hfi.channel = XXX;
- hfi.phytype = XXX;
- */
- break;
- case IEEE80211_RADIOTAP_RATE:
- hfi.datarate = *iter.this_arg * 5;
- break;
- case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
- hfi.ssi_signal = *iter.this_arg;
- break;
- }
- }
-
- if (rxflags && injected)
- return;
-
- if (!injected)
- msg_type = ieee80211_msg_normal;
- else if (failed)
- msg_type = ieee80211_msg_tx_callback_fail;
- else
- msg_type = ieee80211_msg_tx_callback_ack;
-
- handle_frame(drv, hapd->iface, buf + iter.max_length,
- len - iter.max_length, &hfi, msg_type);
-}
-
-
-/*
- * we post-process the filter code later and rewrite
- * this to the offset to the last instruction
- */
-#define PASS 0xFF
-#define FAIL 0xFE
-
-static struct sock_filter msock_filter_insns[] = {
- /*
- * do a little-endian load of the radiotap length field
- */
- /* load lower byte into A */
- BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
- /* put it into X (== index register) */
- BPF_STMT(BPF_MISC| BPF_TAX, 0),
- /* load upper byte into A */
- BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
- /* left-shift it by 8 */
- BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
- /* or with X */
- BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
- /* put result into X */
- BPF_STMT(BPF_MISC| BPF_TAX, 0),
-
- /*
- * Allow management frames through, this also gives us those
- * management frames that we sent ourselves with status
- */
- /* load the lower byte of the IEEE 802.11 frame control field */
- BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
- /* mask off frame type and version */
- BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
- /* accept frame if it's both 0, fall through otherwise */
- BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
-
- /*
- * TODO: add a bit to radiotap RX flags that indicates
- * that the sending station is not associated, then
- * add a filter here that filters on our DA and that flag
- * to allow us to deauth frames to that bad station.
- *
- * Not a regression -- we didn't do it before either.
- */
-
-#if 0
- /*
- * drop non-data frames, WDS frames
- */
- /* load the lower byte of the frame control field */
- BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
- /* mask off QoS bit */
- BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
- /* drop non-data frames */
- BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
- /* load the upper byte of the frame control field */
- BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
- /* mask off toDS/fromDS */
- BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
- /* drop WDS frames */
- BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
-#endif
-
- /*
- * add header length to index
- */
- /* load the lower byte of the frame control field */
- BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
- /* mask off QoS bit */
- BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
- /* right shift it by 6 to give 0 or 2 */
- BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
- /* add data frame header length */
- BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
- /* add index, was start of 802.11 header */
- BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
- /* move to index, now start of LL header */
- BPF_STMT(BPF_MISC | BPF_TAX, 0),
-
- /*
- * Accept empty data frames, we use those for
- * polling activity.
- */
- BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
- BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
-
- /*
- * Accept EAPOL frames
- */
- BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
- BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
- BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
- BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
-
- /* keep these last two statements or change the code below */
- /* return 0 == "DROP" */
- BPF_STMT(BPF_RET | BPF_K, 0),
- /* return ~0 == "keep all" */
- BPF_STMT(BPF_RET | BPF_K, ~0),
-};
-
-static struct sock_fprog msock_filter = {
- .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
- .filter = msock_filter_insns,
-};
-
-
-static int add_monitor_filter(int s)
-{
- int idx;
-
- /* rewrite all PASS/FAIL jump offsets */
- for (idx = 0; idx < msock_filter.len; idx++) {
- struct sock_filter *insn = &msock_filter_insns[idx];
-
- if (BPF_CLASS(insn->code) == BPF_JMP) {
- if (insn->code == (BPF_JMP|BPF_JA)) {
- if (insn->k == PASS)
- insn->k = msock_filter.len - idx - 2;
- else if (insn->k == FAIL)
- insn->k = msock_filter.len - idx - 3;
- }
-
- if (insn->jt == PASS)
- insn->jt = msock_filter.len - idx - 2;
- else if (insn->jt == FAIL)
- insn->jt = msock_filter.len - idx - 3;
-
- if (insn->jf == PASS)
- insn->jf = msock_filter.len - idx - 2;
- else if (insn->jf == FAIL)
- insn->jf = msock_filter.len - idx - 3;
- }
- }
-
- if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
- &msock_filter, sizeof(msock_filter))) {
- perror("SO_ATTACH_FILTER");
- return -1;
- }
-
- return 0;
-}
-
-
static int nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
{
char buf[IFNAMSIZ];
static int i802_init_sockets(struct wpa_driver_nl80211_data *drv, const u8 *bssid)
{
struct ifreq ifr;
+ int ret;
drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
if (drv->ioctl_sock < 0) {
return -1;
}
+ ret = nl_get_multicast_id(drv, "nl80211", "scan");
+ if (ret >= 0)
+ ret = nl_socket_add_membership(drv->nl_handle, ret);
+ if (ret < 0) {
+ wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
+ "membership for scan events: %d (%s)",
+ ret, strerror(-ret));
+ }
+
+ ret = nl_get_multicast_id(drv, "nl80211", "mlme");
+ if (ret >= 0)
+ ret = nl_socket_add_membership(drv->nl_handle, ret);
+ if (ret < 0) {
+ wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
+ "membership for mlme events: %d (%s)",
+ ret, strerror(-ret));
+ }
+
+ eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle),
+ wpa_driver_nl80211_event_receive, drv,
+ drv->hapd);
+
#ifdef CONFIG_IEEE80211N
if (drv->ht_40mhz_scan) {
if (nl80211_set_mode(drv, drv->ifname, NL80211_IFTYPE_STATION)
}
-static void
-hostapd_wireless_event_wireless_custom(struct wpa_driver_nl80211_data *drv,
- char *custom)
-{
- wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
-
- if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
- char *pos;
- u8 addr[ETH_ALEN];
- pos = strstr(custom, "addr=");
- if (pos == NULL) {
- wpa_printf(MSG_DEBUG,
- "MLME-MICHAELMICFAILURE.indication "
- "without sender address ignored");
- return;
- }
- pos += 5;
- if (hwaddr_aton(pos, addr) == 0) {
- hostapd_michael_mic_failure(drv->hapd, addr);
- } else {
- wpa_printf(MSG_DEBUG,
- "MLME-MICHAELMICFAILURE.indication "
- "with invalid MAC address");
- }
- }
-}
-
-
-static void hostapd_wireless_event_wireless(struct wpa_driver_nl80211_data *drv,
- char *data, int len)
-{
- struct iw_event iwe_buf, *iwe = &iwe_buf;
- char *pos, *end, *custom, *buf;
-
- pos = data;
- end = data + len;
-
- while (pos + IW_EV_LCP_LEN <= end) {
- /* Event data may be unaligned, so make a local, aligned copy
- * before processing. */
- memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
- wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
- iwe->cmd, iwe->len);
- if (iwe->len <= IW_EV_LCP_LEN)
- return;
-
- custom = pos + IW_EV_POINT_LEN;
- if (drv->we_version > 18 &&
- (iwe->cmd == IWEVMICHAELMICFAILURE ||
- iwe->cmd == IWEVCUSTOM)) {
- /* WE-19 removed the pointer from struct iw_point */
- char *dpos = (char *) &iwe_buf.u.data.length;
- int dlen = dpos - (char *) &iwe_buf;
- memcpy(dpos, pos + IW_EV_LCP_LEN,
- sizeof(struct iw_event) - dlen);
- } else {
- memcpy(&iwe_buf, pos, sizeof(struct iw_event));
- custom += IW_EV_POINT_OFF;
- }
-
- switch (iwe->cmd) {
- case IWEVCUSTOM:
- if (custom + iwe->u.data.length > end)
- return;
- buf = malloc(iwe->u.data.length + 1);
- if (buf == NULL)
- return;
- memcpy(buf, custom, iwe->u.data.length);
- buf[iwe->u.data.length] = '\0';
- hostapd_wireless_event_wireless_custom(drv, buf);
- free(buf);
- break;
- }
-
- pos += iwe->len;
- }
-}
-
-
-static void hostapd_wireless_event_rtm_newlink(struct wpa_driver_nl80211_data *drv,
- struct nlmsghdr *h, int len)
-{
- struct ifinfomsg *ifi;
- int attrlen, _nlmsg_len, rta_len;
- struct rtattr *attr;
-
- if (len < (int) sizeof(*ifi))
- return;
-
- ifi = NLMSG_DATA(h);
-
- /* TODO: use ifi->ifi_index to filter out wireless events from other
- * interfaces */
-
- _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
-
- attrlen = h->nlmsg_len - _nlmsg_len;
- if (attrlen < 0)
- return;
-
- attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
-
- rta_len = RTA_ALIGN(sizeof(struct rtattr));
- while (RTA_OK(attr, attrlen)) {
- if (attr->rta_type == IFLA_WIRELESS) {
- hostapd_wireless_event_wireless(
- drv, ((char *) attr) + rta_len,
- attr->rta_len - rta_len);
- }
- attr = RTA_NEXT(attr, attrlen);
- }
-}
-
-
-static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
- void *sock_ctx)
-{
- char buf[256];
- int left;
- struct sockaddr_nl from;
- socklen_t fromlen;
- struct nlmsghdr *h;
- struct wpa_driver_nl80211_data *drv = eloop_ctx;
-
- fromlen = sizeof(from);
- left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
- (struct sockaddr *) &from, &fromlen);
- if (left < 0) {
- if (errno != EINTR && errno != EAGAIN)
- perror("recvfrom(netlink)");
- return;
- }
-
- h = (struct nlmsghdr *) buf;
- while (left >= (int) sizeof(*h)) {
- int len, plen;
-
- len = h->nlmsg_len;
- plen = len - sizeof(*h);
- if (len > left || plen < 0) {
- printf("Malformed netlink message: "
- "len=%d left=%d plen=%d\n",
- len, left, plen);
- break;
- }
-
- switch (h->nlmsg_type) {
- case RTM_NEWLINK:
- hostapd_wireless_event_rtm_newlink(drv, h, plen);
- break;
- }
-
- len = NLMSG_ALIGN(len);
- left -= len;
- h = (struct nlmsghdr *) ((char *) h + len);
- }
-
- if (left > 0) {
- printf("%d extra bytes in the end of netlink message\n", left);
- }
-}
-
-
-static int hostap_get_we_version(struct wpa_driver_nl80211_data *drv)
-{
- struct iw_range *range;
- struct iwreq iwr;
- int minlen;
- size_t buflen;
-
- drv->we_version = 0;
-
- /*
- * Use larger buffer than struct iw_range in order to allow the
- * structure to grow in the future.
- */
- buflen = sizeof(struct iw_range) + 500;
- range = os_zalloc(buflen);
- if (range == NULL)
- return -1;
-
- memset(&iwr, 0, sizeof(iwr));
- os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
- iwr.u.data.pointer = (caddr_t) range;
- iwr.u.data.length = buflen;
-
- minlen = ((char *) &range->enc_capa) - (char *) range +
- sizeof(range->enc_capa);
-
- if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
- perror("ioctl[SIOCGIWRANGE]");
- free(range);
- return -1;
- } else if (iwr.u.data.length >= minlen &&
- range->we_version_compiled >= 18) {
- wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
- "WE(source)=%d enc_capa=0x%x",
- range->we_version_compiled,
- range->we_version_source,
- range->enc_capa);
- drv->we_version = range->we_version_compiled;
- }
-
- free(range);
- return 0;
-}
-
-
-static int i802_wireless_event_init(struct wpa_driver_nl80211_data *drv)
-{
- int s;
- struct sockaddr_nl local;
-
- hostap_get_we_version(drv);
-
- drv->wext_sock = -1;
-
- s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
- if (s < 0) {
- perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
- return -1;
- }
-
- memset(&local, 0, sizeof(local));
- local.nl_family = AF_NETLINK;
- local.nl_groups = RTMGRP_LINK;
- if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
- perror("bind(netlink)");
- close(s);
- return -1;
- }
-
- eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
- NULL);
- drv->wext_sock = s;
-
- return 0;
-}
-
-
-static void i802_wireless_event_deinit(struct wpa_driver_nl80211_data *drv)
-{
- if (drv->wext_sock < 0)
- return;
- eloop_unregister_read_sock(drv->wext_sock);
- close(drv->wext_sock);
-}
-
-
static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
{
struct wpa_driver_nl80211_data *drv = priv;
memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
mgmt.u.deauth.reason_code = host_to_le16(reason);
- return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
- sizeof(mgmt.u.deauth), 0);
+ return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
+ IEEE80211_HDRLEN +
+ sizeof(mgmt.u.deauth));
}
memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
mgmt.u.disassoc.reason_code = host_to_le16(reason);
- return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
- sizeof(mgmt.u.disassoc), 0);
+ return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
+ IEEE80211_HDRLEN +
+ sizeof(mgmt.u.disassoc));
}
if (i802_init_sockets(drv, bssid))
goto failed;
- if (i802_wireless_event_init(drv))
- goto failed;
-
return drv;
failed:
struct wpa_driver_nl80211_data *drv = priv;
struct i802_bss *bss, *prev;
- i802_wireless_event_deinit(drv);
-
if (drv->last_freq_ht) {
/* Clear HT flags from the driver */
struct hostapd_freq_params freq;
close(drv->eapol_sock);
}
+ eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle));
genl_family_put(drv->nl80211);
nl_cache_free(drv->nl_cache);
nl_handle_destroy(drv->nl_handle);
.sta_deauth = i802_sta_deauth,
.sta_disassoc = i802_sta_disassoc,
.sta_remove = i802_sta_remove,
- .send_mgmt_frame = i802_send_mgmt_frame,
.sta_add = i802_sta_add,
.get_inact_sec = i802_get_inact_sec,
.sta_clear_stats = i802_sta_clear_stats,
.if_update = i802_if_update,
.if_remove = i802_if_remove,
.set_sta_vlan = i802_set_sta_vlan,
- .hapd_set_country = i802_set_country,
.get_neighbor_bss = i802_get_neighbor_bss,
#endif /* HOSTAPD */
};
projects / wpasupplicant / blobdiff