/*
* 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];
int ifidx);
#endif /* CONFIG_AP */
+#ifdef HOSTAPD
+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)
msg = nlmsg_alloc();
if (!msg)
- goto nla_put_failure;
+ return -ENOMEM;
alpha2[0] = alpha2_arg[0];
alpha2[1] = alpha2_arg[1];
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 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)
{
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];
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));
}
.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