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4c73b6629a
openwrt-xburst/package/hostapd/patches/002-add-nl80211-driver.patch
noz 6b106238fd Compilation fix for hostapd with newer mac80211 code. Thanks Hauke Mehrtens. 
Fixes #3501


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11407 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-06-08 20:19:19 +00:00

2969 lines
77 KiB
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diff -urN hostapd.orig/driver_nl80211.c hostapd/driver_nl80211.c
--- a/hostapd/driver_nl80211.c 1970-01-01 01:00:00.000000000 +0100
+++ b/hostapd/driver_nl80211.c 2008-02-16 19:46:38.000000000 +0100
@@ -0,0 +1,2382 @@
+/*
+ * hostapd / Kernel driver communication via nl80211
+ * Copyright (c) 2002-2007, 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>
+ *
+ * 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
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "includes.h"
+
+#include <sys/ioctl.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/family.h>
+#include <netlink/genl/ctrl.h>
+#include <netlink/msg.h>
+#include <netlink/attr.h>
+#include <linux/nl80211.h>
+#include <net/if.h>
+#include <linux/if_packet.h>
+#include <linux/if_ether.h> /* The L2 protocols */
+#include "wireless_copy.h"
+#include <net/if_arp.h>
+
+#include "hostapd.h"
+#include "driver.h"
+#include "ieee802_1x.h"
+#include "eloop.h"
+#include "ieee802_11.h"
+#include "sta_info.h"
+#include "hw_features.h"
+#include "mlme.h"
+#include "radiotap.h"
+#include "radiotap_iter.h"
+
+enum ieee80211_msg_type {
+ ieee80211_msg_normal = 0,
+ ieee80211_msg_tx_callback_ack = 1,
+ ieee80211_msg_tx_callback_fail = 2,
+};
+
+struct i802_driver_data {
+ struct hostapd_data *hapd;
+
+ char iface[IFNAMSIZ + 1];
+ int ioctl_sock; /* socket for ioctl() use */
+ int wext_sock; /* socket for wireless events */
+ int eapol_sock; /* socket for EAPOL frames */
+ int monitor_sock; /* socket for monitor */
+ int monitor_ifidx;
+
+ int default_if_indices[16];
+ int *if_indices;
+ int num_if_indices;
+
+ int we_version;
+ struct nl_handle *nl_handle;
+ struct nl_cache *nl_cache;
+ struct genl_family *nl80211;
+ int dtim_period;
+ unsigned int beacon_set:1;
+ unsigned int ieee802_1x_active:1;
+};
+
+
+static void add_ifidx(struct i802_driver_data *drv, int ifidx)
+{
+ int i;
+ int *old;
+
+ for (i = 0; i < drv->num_if_indices; i++) {
+ if (drv->if_indices[i] == 0) {
+ drv->if_indices[i] = ifidx;
+ return;
+ }
+ }
+
+ if (drv->if_indices != drv->default_if_indices)
+ old = drv->if_indices;
+ else
+ old = NULL;
+
+ drv->if_indices = realloc(old,
+ sizeof(int) * (drv->num_if_indices + 1));
+ if (!drv->if_indices) {
+ if (!old)
+ drv->if_indices = drv->default_if_indices;
+ else
+ drv->if_indices = old;
+ wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
+ "interfaces");
+ wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
+ return;
+ }
+ drv->if_indices[drv->num_if_indices] = ifidx;
+ drv->num_if_indices++;
+}
+
+
+static void del_ifidx(struct i802_driver_data *drv, int ifidx)
+{
+ int i;
+
+ for (i = 0; i < drv->num_if_indices; i++) {
+ if (drv->if_indices[i] == ifidx) {
+ drv->if_indices[i] = 0;
+ break;
+ }
+ }
+}
+
+
+static int have_ifidx(struct i802_driver_data *drv, int ifidx)
+{
+ int i;
+
+ for (i = 0; i < drv->num_if_indices; i++)
+ if (drv->if_indices[i] == ifidx)
+ return 1;
+
+ return 0;
+}
+
+
+/* helper for netlink get routines */
+static int ack_wait_handler(struct nl_msg *msg, void *arg)
+{
+ int *finished = arg;
+
+ *finished = 1;
+ return NL_STOP;
+}
+
+
+static int hostapd_set_iface_flags(struct i802_driver_data *drv,
+ const char *ifname, int dev_up)
+{
+ struct ifreq ifr;
+
+ if (drv->ioctl_sock < 0)
+ return -1;
+
+ memset(&ifr, 0, sizeof(ifr));
+ os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
+
+ if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
+ perror("ioctl[SIOCGIFFLAGS]");
+ wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
+ drv->iface);
+ return -1;
+ }
+
+ if (dev_up)
+ ifr.ifr_flags |= IFF_UP;
+ else
+ ifr.ifr_flags &= ~IFF_UP;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
+ perror("ioctl[SIOCSIFFLAGS]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_set_encryption(const char *iface, void *priv, const char *alg,
+ const u8 *addr, int idx, const u8 *key,
+ size_t key_len, int txkey)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ int ret = -1;
+ int err = 0;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ if (strcmp(alg, "none") == 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);
+ NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
+ if (strcmp(alg, "WEP") == 0) {
+ if (key_len == 5)
+ NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
+ 0x000FAC01);
+ else
+ NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
+ 0x000FAC05);
+ } else if (strcmp(alg, "TKIP") == 0)
+ NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
+ else if (strcmp(alg, "CCMP") == 0)
+ NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
+ else
+ goto out;
+ }
+
+ 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, if_nametoindex(iface));
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ (err = nl_wait_for_ack(drv->nl_handle)) < 0) {
+ if (err != -ENOENT) {
+ err = 0;
+ goto out;
+ }
+ }
+
+ /*
+ * If we need to set the default TX key we do that below,
+ * otherwise we're done here.
+ */
+ if (!txkey || addr) {
+ ret = 0;
+ goto out;
+ }
+
+ nlmsg_free(msg);
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ 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, if_nametoindex(iface));
+ NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ (err = nl_wait_for_ack(drv->nl_handle)) < 0) {
+ if (err != -ENOENT) {
+ err = 0;
+ goto out;
+ }
+ }
+
+ ret = 0;
+
+ out:
+ nla_put_failure:
+ nlmsg_free(msg);
+ return ret;
+}
+
+
+static inline int min_int(int a, int b)
+{
+ if (a < b)
+ return a;
+ return b;
+}
+
+
+static int get_key_handler(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *tb[NL80211_ATTR_MAX];
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+
+ nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), NULL);
+
+ /*
+ * TODO: validate the key index and mac address!
+ * Otherwise, there's a race condition as soon as
+ * the kernel starts sending key notifications.
+ */
+
+ if (tb[NL80211_ATTR_KEY_SEQ])
+ memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
+ min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
+ return NL_SKIP;
+}
+
+
+static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
+ int idx, u8 *seq)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ struct nl_cb *cb = NULL;
+ int ret = -1;
+ int err = 0;
+ int finished = 0;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_GET_KEY, 0);
+
+ 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, if_nametoindex(iface));
+
+ cb = nl_cb_alloc(NL_CB_CUSTOM);
+ if (!cb)
+ goto out;
+
+ memset(seq, 0, 6);
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0)
+ goto out;
+
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, get_key_handler, seq);
+ nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, &finished);
+
+ err = nl_recvmsgs(drv->nl_handle, cb);
+
+ if (!finished)
+ err = nl_wait_for_ack(drv->nl_handle);
+
+ if (err < 0)
+ goto out;
+
+ ret = 0;
+
+ out:
+ nl_cb_put(cb);
+ nla_put_failure:
+ nlmsg_free(msg);
+ return ret;
+}
+
+
+static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
+ int mode)
+{
+ return -1;
+}
+
+
+static int i802_set_ssid(const char *ifname, void *priv, const u8 *buf,
+ int len)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
+ iwr.u.essid.flags = 1; /* SSID active */
+ iwr.u.essid.pointer = (caddr_t) buf;
+ iwr.u.essid.length = len;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
+ perror("ioctl[SIOCSIWESSID]");
+ printf("len=%d\n", len);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
+ int flags)
+{
+ struct ieee80211_hdr *hdr = (void*) data;
+ __u8 rtap_hdr[] = {
+ 0x00, 0x00, /* radiotap version */
+ 0x0e, 0x00, /* radiotap length */
+ 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
+ 0x0c, /* F_WEP | F_FRAG (encrypt/fragment if required) */
+ 0x00, /* padding */
+ 0x00, 0x00, /* RX and TX flags to indicate that */
+ 0x00, 0x00, /* this is the injected frame directly */
+ };
+ struct i802_driver_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,
+ };
+
+ /*
+ * ugh, guess what, the generic code sets one of the version
+ * bits to request tx callback
+ */
+ hdr->frame_control &= ~host_to_le16(BIT(1));
+ return sendmsg(drv->monitor_sock, &msg, flags);
+}
+
+
+/* Set kernel driver on given frequency (MHz) */
+static int i802_set_freq(void *priv, int mode, int freq)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
+ iwr.u.freq.m = freq;
+ iwr.u.freq.e = 6;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
+ perror("ioctl[SIOCSIWFREQ]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_set_rts(void *priv, int rts)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
+ iwr.u.rts.value = rts;
+ iwr.u.rts.fixed = 1;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
+ perror("ioctl[SIOCSIWRTS]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_get_rts(void *priv, int *rts)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
+
+ if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
+ perror("ioctl[SIOCGIWRTS]");
+ return -1;
+ }
+
+ *rts = iwr.u.rts.value;
+
+ return 0;
+}
+
+
+static int i802_set_frag(void *priv, int frag)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
+ iwr.u.frag.value = frag;
+ iwr.u.frag.fixed = 1;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
+ perror("ioctl[SIOCSIWFRAG]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_get_frag(void *priv, int *frag)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
+
+ if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
+ perror("ioctl[SIOCGIWFRAG]");
+ return -1;
+ }
+
+ *frag = iwr.u.frag.value;
+
+ return 0;
+}
+
+
+static int i802_set_retry(void *priv, int short_retry, int long_retry)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
+
+ iwr.u.retry.value = short_retry;
+ iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
+ if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
+ perror("ioctl[SIOCSIWRETRY(short)]");
+ return -1;
+ }
+
+ iwr.u.retry.value = long_retry;
+ iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+ if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
+ perror("ioctl[SIOCSIWRETRY(long)]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
+
+ iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
+ if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
+ perror("ioctl[SIOCGIWFRAG(short)]");
+ return -1;
+ }
+ *short_retry = iwr.u.retry.value;
+
+ iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+ if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
+ perror("ioctl[SIOCGIWFRAG(long)]");
+ return -1;
+ }
+ *long_retry = iwr.u.retry.value;
+
+ return 0;
+}
+
+
+static int i802_flush(void *priv)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_NEW_STATION, 0);
+
+ /*
+ * XXX: FIX! this needs to flush all VLANs too
+ */
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->iface));
+
+ ret = 0;
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0) {
+ ret = -1;
+ }
+
+ nla_put_failure:
+ nlmsg_free(msg);
+
+ out:
+ return ret;
+}
+
+
+static int get_sta_handler(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *tb[NL80211_ATTR_MAX + 1];
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+ struct hostap_sta_driver_data *data = arg;
+ struct nlattr *stats[NL80211_STA_STAT_MAX + 1];
+ static struct nla_policy stats_policy[NL80211_STA_STAT_MAX + 1] = {
+ [NL80211_STA_STAT_INACTIVE_TIME] = { .type = NLA_U32 },
+ [NL80211_STA_STAT_RX_BYTES] = { .type = NLA_U32 },
+ [NL80211_STA_STAT_TX_BYTES] = { .type = NLA_U32 },
+ };
+
+ nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), NULL);
+
+ /*
+ * TODO: validate the interface and mac address!
+ * Otherwise, there's a race condition as soon as
+ * the kernel starts sending station notifications.
+ */
+
+ if (!tb[NL80211_ATTR_STA_STATS]) {
+ wpa_printf(MSG_DEBUG, "sta stats missing!");
+ return NL_SKIP;
+ }
+ if (nla_parse_nested(stats, NL80211_STA_STAT_MAX,
+ tb[NL80211_ATTR_STA_STATS],
+ stats_policy)) {
+ wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
+ return NL_SKIP;
+ }
+
+ if (stats[NL80211_STA_STAT_INACTIVE_TIME])
+ data->inactive_msec =
+ nla_get_u32(stats[NL80211_STA_STAT_INACTIVE_TIME]);
+ if (stats[NL80211_STA_STAT_RX_BYTES])
+ data->rx_bytes = nla_get_u32(stats[NL80211_STA_STAT_RX_BYTES]);
+ if (stats[NL80211_STA_STAT_TX_BYTES])
+ data->rx_bytes = nla_get_u32(stats[NL80211_STA_STAT_TX_BYTES]);
+
+ return NL_SKIP;
+}
+
+static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
+ const u8 *addr)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ struct nl_cb *cb = NULL;
+ int ret = -1;
+ int err = 0;
+ int finished = 0;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_GET_STATION, 0);
+
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
+
+ cb = nl_cb_alloc(NL_CB_CUSTOM);
+ if (!cb)
+ goto out;
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0)
+ goto out;
+
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, get_sta_handler, data);
+ nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, &finished);
+
+ err = nl_recvmsgs(drv->nl_handle, cb);
+
+ if (!finished)
+ err = nl_wait_for_ack(drv->nl_handle);
+
+ if (err < 0)
+ goto out;
+
+ ret = 0;
+
+ out:
+ nl_cb_put(cb);
+ nla_put_failure:
+ nlmsg_free(msg);
+ return ret;
+
+}
+
+
+static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
+ size_t data_len, int encrypt, const u8 *own_addr)
+{
+ struct i802_driver_data *drv = priv;
+ struct ieee80211_hdr *hdr;
+ size_t len;
+ u8 *pos;
+ int res;
+#if 0 /* FIX */
+ int qos = sta->flags & WLAN_STA_WME;
+#else
+ int qos = 0;
+#endif
+
+ len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
+ data_len;
+ hdr = os_zalloc(len);
+ if (hdr == NULL) {
+ printf("malloc() failed for i802_send_data(len=%lu)\n",
+ (unsigned long) len);
+ return -1;
+ }
+
+ hdr->frame_control =
+ IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
+ hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
+ if (encrypt)
+ hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
+#if 0 /* To be enabled if qos determination is added above */
+ if (qos) {
+ hdr->frame_control |=
+ host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
+ }
+#endif
+
+ memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
+ memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
+ memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
+ pos = (u8 *) (hdr + 1);
+
+#if 0 /* To be enabled if qos determination is added above */
+ if (qos) {
+ /* add an empty QoS header if needed */
+ pos[0] = 0;
+ pos[1] = 0;
+ pos += 2;
+ }
+#endif
+
+ memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
+ pos += sizeof(rfc1042_header);
+ WPA_PUT_BE16(pos, ETH_P_PAE);
+ pos += 2;
+ memcpy(pos, data, data_len);
+
+ res = i802_send_mgmt_frame(drv, (u8 *) hdr, len, 0);
+ free(hdr);
+
+ if (res < 0) {
+ perror("i802_send_eapol: send");
+ printf("i802_send_eapol - packet len: %lu - failed\n",
+ (unsigned long) len);
+ }
+
+ return res;
+}
+
+
+static int i802_sta_add(const char *ifname, void *priv, const u8 *addr,
+ u16 aid, u16 capability, u8 *supp_rates,
+ size_t supp_rates_len, int flags)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_NEW_STATION, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->iface));
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+ NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, aid);
+ NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, supp_rates_len,
+ supp_rates);
+ NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, 0);
+
+ ret = nl_send_auto_complete(drv->nl_handle, msg);
+ if (ret < 0)
+ goto nla_put_failure;
+
+ ret = nl_wait_for_ack(drv->nl_handle);
+ /* ignore EEXIST, this happens if a STA associates while associated */
+ if (ret == -EEXIST || ret >= 0)
+ ret = 0;
+
+ nla_put_failure:
+ nlmsg_free(msg);
+
+ out:
+ return ret;
+}
+
+
+static int i802_sta_remove(void *priv, const u8 *addr)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_DEL_STATION, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->iface));
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+
+ ret = 0;
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0) {
+ ret = -1;
+ }
+
+ nla_put_failure:
+ nlmsg_free(msg);
+
+ out:
+ return ret;
+}
+
+
+static int i802_sta_set_flags(void *priv, const u8 *addr,
+ int total_flags, int flags_or, int flags_and)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg, *flags = NULL;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ flags = nlmsg_alloc();
+ if (!flags)
+ goto free_msg;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_STATION, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->iface));
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+
+ if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
+ NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
+
+ if (total_flags & WLAN_STA_WME)
+ NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
+
+ if (total_flags & WLAN_STA_SHORT_PREAMBLE)
+ NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
+
+ if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
+ goto nla_put_failure;
+
+ ret = 0;
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0) {
+ ret = -1;
+ }
+
+ nla_put_failure:
+ nlmsg_free(flags);
+
+ free_msg:
+ nlmsg_free(msg);
+
+ out:
+ return ret;
+}
+
+
+static int i802_set_channel_flag(void *priv, int mode, int chan, int flag,
+ unsigned char power_level,
+ unsigned char antenna_max)
+{
+ return -1;
+}
+
+
+static int i802_set_regulatory_domain(void *priv, unsigned int rd)
+{
+ return -1;
+}
+
+
+static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
+ int cw_min, int cw_max, int burst_time)
+{
+ return -1;
+}
+
+
+static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
+{
+ struct nl_msg *msg;
+
+ /* stop listening for EAPOL on this interface */
+ del_ifidx(drv, ifidx);
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto nla_put_failure;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_DEL_INTERFACE, 0);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0)
+ nla_put_failure:
+ printf("Failed to remove interface.\n");
+ nlmsg_free(msg);
+}
+
+
+static int nl80211_create_iface(struct i802_driver_data *drv,
+ const char *ifname,
+ enum nl80211_iftype iftype,
+ const u8 *addr)
+{
+ struct nl_msg *msg, *flags = NULL;
+ int ifidx;
+ struct ifreq ifreq;
+ struct iwreq iwr;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -1;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_NEW_INTERFACE, 0);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->hapd->conf->iface));
+ NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
+
+ if (iftype == NL80211_IFTYPE_MONITOR) {
+ int err;
+
+ flags = nlmsg_alloc();
+ if (!flags)
+ goto nla_put_failure;
+
+ NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
+
+ err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
+
+ nlmsg_free(flags);
+
+ if (err)
+ goto nla_put_failure;
+ }
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0) {
+ nla_put_failure:
+ printf("Failed to create interface %s.\n", ifname);
+ nlmsg_free(msg);
+ return -1;
+ }
+
+ nlmsg_free(msg);
+
+ ifidx = if_nametoindex(ifname);
+
+ if (ifidx <= 0)
+ return -1;
+
+ /* start listening for EAPOL on this interface */
+ add_ifidx(drv, ifidx);
+
+ if (addr) {
+ switch (iftype) {
+ case NL80211_IFTYPE_AP:
+ os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
+ memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
+ ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
+ nl80211_remove_iface(drv, ifidx);
+ return -1;
+ }
+ break;
+ case NL80211_IFTYPE_WDS:
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
+ iwr.u.addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
+ if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
+ return -1;
+ break;
+ default:
+ /* nothing */
+ break;
+ }
+ }
+
+ return ifidx;
+}
+
+
+static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
+{
+ int ifidx;
+
+ /*
+ * The kernel supports that when the low-level driver does,
+ * but we currently don't because we need per-BSS data that
+ * currently we can't handle easily.
+ */
+ return -1;
+
+ ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
+ if (ifidx < 0)
+ return -1;
+ if (hostapd_set_iface_flags(priv, ifname, 1)) {
+ nl80211_remove_iface(priv, ifidx);
+ return -1;
+ }
+ return 0;
+}
+
+
+static int i802_bss_remove(void *priv, const char *ifname)
+{
+ nl80211_remove_iface(priv, if_nametoindex(ifname));
+ return 0;
+}
+
+
+static int i802_set_beacon(const char *iface, void *priv,
+ u8 *head, size_t head_len,
+ u8 *tail, size_t tail_len)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ u8 cmd = NL80211_CMD_NEW_BEACON;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ if (drv->beacon_set)
+ cmd = NL80211_CMD_SET_BEACON;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, cmd, 0);
+ NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
+ NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
+ NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, 1000);
+
+ if (!drv->dtim_period)
+ drv->dtim_period = 2;
+ NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0)
+ goto out;
+
+ ret = 0;
+
+ drv->beacon_set = 1;
+
+ out:
+ nla_put_failure:
+ nlmsg_free(msg);
+ return ret;
+}
+
+
+static int i802_del_beacon(struct i802_driver_data *drv)
+{
+ struct nl_msg *msg;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_DEL_BEACON, 0);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0)
+ goto out;
+
+ ret = 0;
+
+ out:
+ nla_put_failure:
+ nlmsg_free(msg);
+ return ret;
+}
+
+
+static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
+{
+ struct i802_driver_data *drv = priv;
+
+ /*
+ * FIXME: This needs to be per interface (BSS)
+ */
+ drv->ieee802_1x_active = enabled;
+ return 0;
+}
+
+
+static int i802_set_privacy(const char *ifname, void *priv, int enabled)
+{
+ struct i802_driver_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+
+ os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
+ iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
+ iwr.u.param.value = enabled;
+
+ ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
+
+ /* ignore errors, the kernel/driver might not care */
+ return 0;
+}
+
+
+static int i802_set_internal_bridge(void *priv, int value)
+{
+ return -1;
+}
+
+
+static int i802_set_beacon_int(void *priv, int value)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_BEACON, 0);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
+
+ NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0)
+ goto out;
+
+ ret = 0;
+
+ out:
+ nla_put_failure:
+ nlmsg_free(msg);
+ return ret;
+}
+
+
+static int i802_set_dtim_period(const char *iface, void *priv, int value)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_BEACON, 0);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
+
+ drv->dtim_period = value;
+ NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0)
+ goto out;
+
+ ret = 0;
+
+ out:
+ nla_put_failure:
+ nlmsg_free(msg);
+ return ret;
+}
+
+
+static int i802_set_cts_protect(void *priv, int value)
+{
+ return -1;
+}
+
+
+static int i802_set_preamble(void *priv, int value)
+{
+ return -1;
+}
+
+
+static int i802_set_short_slot_time(void *priv, int value)
+{
+ return -1;
+}
+
+
+static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
+{
+ switch (type) {
+ case HOSTAPD_IF_VLAN:
+ return NL80211_IFTYPE_AP_VLAN;
+ case HOSTAPD_IF_WDS:
+ return NL80211_IFTYPE_WDS;
+ }
+ return -1;
+}
+
+
+static int i802_if_add(const char *iface, void *priv,
+ enum hostapd_driver_if_type type, char *ifname,
+ const u8 *addr)
+{
+ if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
+ return -1;
+ return 0;
+}
+
+
+static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
+ char *ifname, const u8 *addr)
+{
+ /* unused at the moment */
+ return -1;
+}
+
+
+static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
+ const char *ifname, const u8 *addr)
+{
+ nl80211_remove_iface(priv, if_nametoindex(ifname));
+ return 0;
+}
+
+
+struct phy_info_arg {
+ u16 *num_modes;
+ struct hostapd_hw_modes *modes;
+ int error;
+};
+
+static int phy_info_handler(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+ struct phy_info_arg *phy_info = arg;
+
+ struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
+
+ struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
+ static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
+ [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
+ [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
+ [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
+ [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
+ [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
+ };
+
+ struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
+ static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
+ [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
+ [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
+ };
+
+ struct nlattr *nl_band;
+ struct nlattr *nl_freq;
+ struct nlattr *nl_rate;
+ int rem_band, rem_freq, rem_rate;
+ struct hostapd_hw_modes *mode;
+ int idx, mode_is_set;
+
+ nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), NULL);
+
+ if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
+ return NL_SKIP;
+
+ nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
+ mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
+ if (!mode)
+ return NL_SKIP;
+ phy_info->modes = mode;
+
+ mode_is_set = 0;
+
+ mode = &phy_info->modes[*(phy_info->num_modes)];
+ memset(mode, 0, sizeof(*mode));
+ *(phy_info->num_modes) += 1;
+
+ nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
+ nla_len(nl_band), NULL);
+
+ nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
+ nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
+ nla_len(nl_freq), freq_policy);
+ if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
+ continue;
+ mode->num_channels++;
+ }
+
+ mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
+ if (!mode->channels)
+ return NL_SKIP;
+
+ idx = 0;
+
+ nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
+ nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
+ nla_len(nl_freq), freq_policy);
+ if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
+ continue;
+
+ mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
+ mode->channels[idx].flag |= HOSTAPD_CHAN_W_SCAN |
+ HOSTAPD_CHAN_W_ACTIVE_SCAN |
+ HOSTAPD_CHAN_W_IBSS;
+
+ if (!mode_is_set) {
+ /* crude heuristic */
+ if (mode->channels[idx].freq < 4000)
+ mode->mode = HOSTAPD_MODE_IEEE80211B;
+ else
+ mode->mode = HOSTAPD_MODE_IEEE80211A;
+ mode_is_set = 1;
+ }
+
+ /* crude heuristic */
+ if (mode->channels[idx].freq < 4000)
+ if (mode->channels[idx].freq == 2848)
+ mode->channels[idx].chan = 14;
+ else
+ mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
+ else
+ mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
+
+ if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
+ mode->channels[idx].flag &= ~HOSTAPD_CHAN_W_SCAN;
+ if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
+ mode->channels[idx].flag &= ~HOSTAPD_CHAN_W_ACTIVE_SCAN;
+ if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
+ mode->channels[idx].flag &= ~HOSTAPD_CHAN_W_IBSS;
+ idx++;
+ }
+
+ nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
+ nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
+ nla_len(nl_rate), rate_policy);
+ if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
+ continue;
+ mode->num_rates++;
+ }
+
+ mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
+ if (!mode->rates)
+ return NL_SKIP;
+
+ idx = 0;
+
+ nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
+ nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
+ nla_len(nl_rate), rate_policy);
+ if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
+ continue;
+ mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
+
+ /* crude heuristic */
+ if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
+ mode->rates[idx].rate > 200)
+ mode->mode = HOSTAPD_MODE_IEEE80211G;
+
+ if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
+ mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
+
+ idx++;
+ }
+ }
+
+ phy_info->error = 0;
+
+ return NL_SKIP;
+}
+
+static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
+ u16 *num_modes,
+ u16 *flags)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ int err = -1;
+ struct nl_cb *cb = NULL;
+ int finished;
+ struct phy_info_arg result = {
+ .num_modes = num_modes,
+ .modes = NULL,
+ .error = 1,
+ };
+
+ *num_modes = 0;
+ *flags = 0;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return NULL;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_GET_WIPHY, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
+
+ cb = nl_cb_alloc(NL_CB_CUSTOM);
+ if (!cb)
+ goto out;
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0)
+ goto out;
+
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, phy_info_handler, &result);
+ nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, &finished);
+
+ err = nl_recvmsgs(drv->nl_handle, cb);
+
+ if (!finished)
+ err = nl_wait_for_ack(drv->nl_handle);
+
+ if (err < 0 || result.error) {
+ hostapd_free_hw_features(result.modes, *num_modes);
+ result.modes = NULL;
+ }
+
+ out:
+ nl_cb_put(cb);
+ nla_put_failure:
+ if (err)
+ fprintf(stderr, "failed to get information: %d\n", err);
+ nlmsg_free(msg);
+ return result.modes;
+}
+
+
+static int i802_set_sta_vlan(void *priv, const u8 *addr,
+ const char *ifname, int vlan_id)
+{
+ struct i802_driver_data *drv = priv;
+ struct nl_msg *msg;
+ int ret = -1;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ goto out;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_STATION, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->iface));
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(ifname));
+
+ ret = 0;
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ (errno = nl_wait_for_ack(drv->nl_handle) < 0)) {
+ ret = -1;
+ }
+
+ nla_put_failure:
+ nlmsg_free(msg);
+
+ out:
+ return ret;
+}
+
+
+static void handle_unknown_sta(struct hostapd_data *hapd, u8 *ta)
+{
+ struct sta_info *sta;
+
+ sta = ap_get_sta(hapd, ta);
+ if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
+ printf("Data/PS-poll frame from not associated STA "
+ MACSTR "\n", MAC2STR(ta));
+ if (sta && (sta->flags & WLAN_STA_AUTH))
+ hostapd_sta_disassoc(
+ hapd, ta,
+ WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+ else
+ hostapd_sta_deauth(
+ hapd, ta,
+ WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+ }
+}
+
+
+static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
+ int ok)
+{
+ struct ieee80211_hdr *hdr;
+ u16 fc, type, stype;
+ struct sta_info *sta;
+
+ 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");
+ ieee802_11_mgmt_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:
+ wpa_printf(MSG_DEBUG, "DATA (TX callback) %s",
+ ok ? "ACK" : "fail");
+ sta = ap_get_sta(hapd, hdr->addr1);
+ if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
+ wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
+ "activity poll", MAC2STR(sta->addr),
+ ok ? "ACKed" : "did not ACK");
+ if (ok)
+ sta->flags &= ~WLAN_STA_PENDING_POLL;
+ }
+ if (sta)
+ ieee802_1x_tx_status(hapd, sta, buf, len, ok);
+ break;
+ default:
+ printf("unknown TX callback frame type %d\n", type);
+ break;
+ }
+}
+
+
+static void handle_frame(struct hostapd_iface *iface, u8 *buf, size_t len,
+ struct hostapd_frame_info *hfi,
+ enum ieee80211_msg_type msg_type)
+{
+ struct ieee80211_hdr *hdr;
+ u16 fc, type, stype;
+ size_t data_len = len;
+ struct hostapd_data *hapd = NULL;
+ int broadcast_bssid = 0;
+ size_t i;
+ u8 *bssid;
+
+ /*
+ * PS-Poll frames are 16 bytes. All other frames are
+ * 24 bytes or longer.
+ */
+ if (len < 16)
+ return;
+
+ 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_DATA:
+ if (len < 24)
+ return;
+ switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
+ case WLAN_FC_TODS:
+ bssid = hdr->addr1;
+ break;
+ default:
+ /* discard */
+ return;
+ }
+ break;
+ case WLAN_FC_TYPE_CTRL:
+ /* discard non-ps-poll frames */
+ if (stype != WLAN_FC_STYPE_PSPOLL)
+ return;
+ bssid = hdr->addr1;
+ break;
+ case WLAN_FC_TYPE_MGMT:
+ bssid = hdr->addr3;
+ break;
+ default:
+ /* discard */
+ return;
+ }
+
+ /* find interface frame belongs to */
+ for (i = 0; i < iface->num_bss; i++) {
+ if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
+ hapd = iface->bss[i];
+ break;
+ }
+ }
+
+ if (hapd == NULL) {
+ hapd = iface->bss[0];
+
+ if (bssid[0] != 0xff || bssid[1] != 0xff ||
+ bssid[2] != 0xff || bssid[3] != 0xff ||
+ bssid[4] != 0xff || bssid[5] != 0xff) {
+ /*
+ * Unknown BSSID - drop frame if this is not from
+ * passive scanning or a beacon (at least ProbeReq
+ * frames to other APs may be allowed through RX
+ * filtering in the wlan hw/driver)
+ */
+ if ((type != WLAN_FC_TYPE_MGMT ||
+ stype != WLAN_FC_STYPE_BEACON))
+ return;
+ } else
+ broadcast_bssid = 1;
+ }
+
+ switch (msg_type) {
+ case ieee80211_msg_normal:
+ /* continue processing */
+ break;
+ case ieee80211_msg_tx_callback_ack:
+ handle_tx_callback(hapd, buf, data_len, 1);
+ return;
+ case ieee80211_msg_tx_callback_fail:
+ handle_tx_callback(hapd, buf, data_len, 0);
+ return;
+ }
+
+ switch (type) {
+ case WLAN_FC_TYPE_MGMT:
+ if (stype != WLAN_FC_STYPE_BEACON &&
+ stype != WLAN_FC_STYPE_PROBE_REQ)
+ wpa_printf(MSG_MSGDUMP, "MGMT");
+ if (broadcast_bssid) {
+ for (i = 0; i < iface->num_bss; i++)
+ ieee802_11_mgmt(iface->bss[i], buf, data_len,
+ stype, hfi);
+ } else
+ ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
+ break;
+ case WLAN_FC_TYPE_CTRL:
+ /* can only get here with PS-Poll frames */
+ wpa_printf(MSG_DEBUG, "CTRL");
+ handle_unknown_sta(hapd, hdr->addr2);
+ break;
+ case WLAN_FC_TYPE_DATA:
+ wpa_printf(MSG_DEBUG, "DATA");
+ handle_unknown_sta(hapd, hdr->addr2);
+ break;
+ }
+}
+
+
+static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
+{
+ struct i802_driver_data *drv = eloop_ctx;
+ struct hostapd_data *hapd = drv->hapd;
+ struct sockaddr_ll lladdr;
+ unsigned char buf[3000];
+ int len;
+ socklen_t fromlen = sizeof(lladdr);
+
+ len = recvfrom(sock, buf, sizeof(buf), 0,
+ (struct sockaddr *)&lladdr, &fromlen);
+ if (len < 0) {
+ perror("recv");
+ return;
+ }
+
+ if (have_ifidx(drv, lladdr.sll_ifindex))
+ ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
+}
+
+
+static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
+{
+ struct i802_driver_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(hapd->iface, buf + iter.max_length,
+ len - iter.max_length, &hfi, msg_type);
+}
+
+
+static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
+{
+ char buf[IFNAMSIZ];
+ struct sockaddr_ll ll;
+ int optval;
+ socklen_t optlen;
+
+ snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
+ buf[IFNAMSIZ - 1] = '\0';
+
+ drv->monitor_ifidx =
+ nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
+
+ if (drv->monitor_ifidx < 0)
+ return -1;
+
+ if (hostapd_set_iface_flags(drv, buf, 1))
+ goto error;
+
+ memset(&ll, 0, sizeof(ll));
+ ll.sll_family = AF_PACKET;
+ ll.sll_ifindex = drv->monitor_ifidx;
+ drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
+ if (drv->monitor_sock < 0) {
+ perror("socket[PF_PACKET,SOCK_RAW]");
+ goto error;
+ }
+
+ if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
+ sizeof(ll)) < 0) {
+ perror("monitor socket bind");
+ goto error;
+ }
+
+ optlen = sizeof(optval);
+ optval = 20;
+ if (setsockopt
+ (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
+ perror("Failed to set socket priority");
+ goto error;
+ }
+
+ if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
+ drv, NULL)) {
+ printf("Could not register monitor read socket\n");
+ goto error;
+ }
+
+ return 0;
+ error:
+ nl80211_remove_iface(drv, drv->monitor_ifidx);
+ return -1;
+}
+
+
+static int nl80211_set_master_mode(struct i802_driver_data *drv,
+ const char *ifname)
+{
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -1;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_INTERFACE, 0);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(ifname));
+ NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
+
+ if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
+ nl_wait_for_ack(drv->nl_handle) < 0) {
+ nla_put_failure:
+ wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
+ "mode.", ifname);
+ nlmsg_free(msg);
+ return -1;
+ }
+
+ nlmsg_free(msg);
+
+ return 0;
+}
+
+
+static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
+{
+ struct ifreq ifr;
+ struct sockaddr_ll addr;
+
+ drv->ioctl_sock = -1;
+
+ drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
+ if (drv->ioctl_sock < 0) {
+ perror("socket[PF_INET,SOCK_DGRAM]");
+ return -1;
+ }
+
+ /* start listening for EAPOL on the default AP interface */
+ add_ifidx(drv, if_nametoindex(drv->iface));
+
+ if (hostapd_set_iface_flags(drv, drv->iface, 0))
+ return -1;
+
+ if (bssid) {
+ os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
+ memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
+ ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
+ perror("ioctl(SIOCSIFHWADDR)");
+ return -1;
+ }
+ }
+
+ /*
+ * initialise generic netlink and nl80211
+ */
+ drv->nl_handle = nl_handle_alloc();
+ if (!drv->nl_handle) {
+ printf("Failed to allocate netlink handle.\n");
+ return -1;
+ }
+
+ if (genl_connect(drv->nl_handle)) {
+ printf("Failed to connect to generic netlink.\n");
+ return -1;
+ }
+
+ drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
+ if (!drv->nl_cache) {
+ printf("Failed to allocate generic netlink cache.\n");
+ return -1;
+ }
+
+ drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
+ if (!drv->nl80211) {
+ printf("nl80211 not found.\n");
+ return -1;
+ }
+
+ /* Initialise a monitor interface */
+ if (nl80211_create_monitor_interface(drv))
+ return -1;
+
+ if (nl80211_set_master_mode(drv, drv->iface))
+ return -1;
+
+ if (hostapd_set_iface_flags(drv, drv->iface, 1))
+ return -1;
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sll_family = AF_PACKET;
+ addr.sll_ifindex = ifr.ifr_ifindex;
+ wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
+ addr.sll_ifindex);
+
+ drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
+ if (drv->eapol_sock < 0) {
+ perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
+ return -1;
+ }
+
+ if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
+ {
+ printf("Could not register read socket for eapol\n");
+ return -1;
+ }
+
+ memset(&ifr, 0, sizeof(ifr));
+ os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
+ if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
+ perror("ioctl(SIOCGIFHWADDR)");
+ return -1;
+ }
+
+ if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
+ printf("Invalid HW-addr family 0x%04x\n",
+ ifr.ifr_hwaddr.sa_family);
+ return -1;
+ }
+ memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
+
+ return 0;
+}
+
+
+static int i802_get_inact_sec(void *priv, const u8 *addr)
+{
+ struct hostap_sta_driver_data data;
+ int ret;
+
+ data.inactive_msec = (unsigned long) -1;
+ ret = i802_read_sta_data(priv, &data, addr);
+ if (ret || data.inactive_msec == (unsigned long) -1)
+ return -1;
+ return data.inactive_msec / 1000;
+}
+
+
+static int i802_sta_clear_stats(void *priv, const u8 *addr)
+{
+#if 0
+ /* TODO */
+#endif
+ return 0;
+}
+
+
+static void
+hostapd_wireless_event_wireless_custom(struct i802_driver_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) {
+ ieee80211_michael_mic_failure(drv->hapd, addr, 1);
+ } else {
+ wpa_printf(MSG_DEBUG,
+ "MLME-MICHAELMICFAILURE.indication "
+ "with invalid MAC address");
+ }
+ }
+}
+
+
+static void hostapd_wireless_event_wireless(struct i802_driver_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 i802_driver_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 i802_driver_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 i802_driver_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->iface, 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(void *priv)
+{
+ struct i802_driver_data *drv = priv;
+ 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(void *priv)
+{
+ struct i802_driver_data *drv = priv;
+ 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 i802_driver_data *drv = priv;
+ struct ieee80211_mgmt mgmt;
+
+ memset(&mgmt, 0, sizeof(mgmt));
+ mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_DEAUTH);
+ memcpy(mgmt.da, addr, ETH_ALEN);
+ 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);
+}
+
+
+static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
+{
+ struct i802_driver_data *drv = priv;
+ struct ieee80211_mgmt mgmt;
+
+ memset(&mgmt, 0, sizeof(mgmt));
+ mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_DISASSOC);
+ memcpy(mgmt.da, addr, ETH_ALEN);
+ 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);
+}
+
+
+static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
+{
+ struct i802_driver_data *drv;
+
+ drv = os_zalloc(sizeof(struct i802_driver_data));
+ if (drv == NULL) {
+ printf("Could not allocate memory for i802 driver data\n");
+ return NULL;
+ }
+
+ drv->hapd = hapd;
+ memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
+
+ drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
+ drv->if_indices = drv->default_if_indices;
+
+ if (i802_init_sockets(drv, bssid))
+ goto failed;
+
+ return drv;
+
+failed:
+ free(drv);
+ return NULL;
+}
+
+
+static void *i802_init(struct hostapd_data *hapd)
+{
+ return i802_init_bssid(hapd, NULL);
+}
+
+
+static void i802_deinit(void *priv)
+{
+ struct i802_driver_data *drv = priv;
+
+ i802_del_beacon(drv);
+
+ /* remove monitor interface */
+ nl80211_remove_iface(drv, drv->monitor_ifidx);
+
+ (void) hostapd_set_iface_flags(drv, drv->iface, 0);
+
+ if (drv->monitor_sock >= 0) {
+ eloop_unregister_read_sock(drv->monitor_sock);
+ close(drv->monitor_sock);
+ }
+ if (drv->ioctl_sock >= 0)
+ close(drv->ioctl_sock);
+ if (drv->eapol_sock >= 0) {
+ eloop_unregister_read_sock(drv->eapol_sock);
+ close(drv->eapol_sock);
+ }
+
+ genl_family_put(drv->nl80211);
+ nl_cache_free(drv->nl_cache);
+ nl_handle_destroy(drv->nl_handle);
+
+ if (drv->if_indices != drv->default_if_indices)
+ free(drv->if_indices);
+
+ free(drv);
+}
+
+
+const struct wpa_driver_ops wpa_driver_nl80211_ops = {
+ .name = "nl80211",
+ .init = i802_init,
+// .init_bssid = i802_init_bssid,
+ .deinit = i802_deinit,
+ .wireless_event_init = i802_wireless_event_init,
+ .wireless_event_deinit = i802_wireless_event_deinit,
+ .set_ieee8021x = i802_set_ieee8021x,
+ .set_privacy = i802_set_privacy,
+ .set_encryption = i802_set_encryption,
+ .get_seqnum = i802_get_seqnum,
+ .flush = i802_flush,
+ .read_sta_data = i802_read_sta_data,
+ .send_eapol = i802_send_eapol,
+ .sta_set_flags = i802_sta_set_flags,
+ .sta_deauth = i802_sta_deauth,
+ .sta_disassoc = i802_sta_disassoc,
+ .sta_remove = i802_sta_remove,
+ .set_ssid = i802_set_ssid,
+ .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,
+ .set_freq = i802_set_freq,
+ .set_rts = i802_set_rts,
+ .get_rts = i802_get_rts,
+ .set_frag = i802_set_frag,
+ .get_frag = i802_get_frag,
+ .set_retry = i802_set_retry,
+ .get_retry = i802_get_retry,
+ .set_rate_sets = i802_set_rate_sets,
+ .set_channel_flag = i802_set_channel_flag,
+ .set_regulatory_domain = i802_set_regulatory_domain,
+ .set_beacon = i802_set_beacon,
+ .set_internal_bridge = i802_set_internal_bridge,
+ .set_beacon_int = i802_set_beacon_int,
+ .set_dtim_period = i802_set_dtim_period,
+ .set_cts_protect = i802_set_cts_protect,
+ .set_preamble = i802_set_preamble,
+ .set_short_slot_time = i802_set_short_slot_time,
+ .set_tx_queue_params = i802_set_tx_queue_params,
+ .bss_add = i802_bss_add,
+ .bss_remove = i802_bss_remove,
+ .if_add = i802_if_add,
+ .if_update = i802_if_update,
+ .if_remove = i802_if_remove,
+ .get_hw_feature_data = i802_get_hw_feature_data,
+ .set_sta_vlan = i802_set_sta_vlan,
+};
diff -urN hostapd.orig/radiotap.c hostapd/radiotap.c
--- a/hostapd/radiotap.c 1970-01-01 01:00:00.000000000 +0100
+++ b/hostapd/radiotap.c 2008-02-15 23:05:17.000000000 +0100
@@ -0,0 +1,287 @@
+/*
+ * Radiotap parser
+ *
+ * Copyright 2007 Andy Green <andy@warmcat.com>
+ *
+ * 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
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ *
+ *
+ * Modified for userspace by Johannes Berg <johannes@sipsolutions.net>
+ * I only modified some things on top to ease syncing should bugs be found.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "radiotap_iter.h"
+
+#define le16_to_cpu le_to_host16
+#define le32_to_cpu le_to_host32
+#define __le32 uint32_t
+#define ulong unsigned long
+#define unlikely(cond) (cond)
+#define get_unaligned(p) \
+({ \
+ struct packed_dummy_struct { \
+ typeof(*(p)) __val; \
+ } __attribute__((packed)) *__ptr = (void *) (p); \
+ \
+ __ptr->__val; \
+})
+
+/* function prototypes and related defs are in radiotap_iter.h */
+
+/**
+ * ieee80211_radiotap_iterator_init - radiotap parser iterator initialization
+ * @iterator: radiotap_iterator to initialize
+ * @radiotap_header: radiotap header to parse
+ * @max_length: total length we can parse into (eg, whole packet length)
+ *
+ * Returns: 0 or a negative error code if there is a problem.
+ *
+ * This function initializes an opaque iterator struct which can then
+ * be passed to ieee80211_radiotap_iterator_next() to visit every radiotap
+ * argument which is present in the header. It knows about extended
+ * present headers and handles them.
+ *
+ * How to use:
+ * call __ieee80211_radiotap_iterator_init() to init a semi-opaque iterator
+ * struct ieee80211_radiotap_iterator (no need to init the struct beforehand)
+ * checking for a good 0 return code. Then loop calling
+ * __ieee80211_radiotap_iterator_next()... it returns either 0,
+ * -ENOENT if there are no more args to parse, or -EINVAL if there is a problem.
+ * The iterator's @this_arg member points to the start of the argument
+ * associated with the current argument index that is present, which can be
+ * found in the iterator's @this_arg_index member. This arg index corresponds
+ * to the IEEE80211_RADIOTAP_... defines.
+ *
+ * Radiotap header length:
+ * You can find the CPU-endian total radiotap header length in
+ * iterator->max_length after executing ieee80211_radiotap_iterator_init()
+ * successfully.
+ *
+ * Alignment Gotcha:
+ * You must take care when dereferencing iterator.this_arg
+ * for multibyte types... the pointer is not aligned. Use
+ * get_unaligned((type *)iterator.this_arg) to dereference
+ * iterator.this_arg for type "type" safely on all arches.
+ *
+ * Example code:
+ * See Documentation/networking/radiotap-headers.txt
+ */
+
+int ieee80211_radiotap_iterator_init(
+ struct ieee80211_radiotap_iterator *iterator,
+ struct ieee80211_radiotap_header *radiotap_header,
+ int max_length)
+{
+ /* Linux only supports version 0 radiotap format */
+ if (radiotap_header->it_version)
+ return -EINVAL;
+
+ /* sanity check for allowed length and radiotap length field */
+ if (max_length < le16_to_cpu(get_unaligned(&radiotap_header->it_len)))
+ return -EINVAL;
+
+ iterator->rtheader = radiotap_header;
+ iterator->max_length = le16_to_cpu(get_unaligned(
+ &radiotap_header->it_len));
+ iterator->arg_index = 0;
+ iterator->bitmap_shifter = le32_to_cpu(get_unaligned(
+ &radiotap_header->it_present));
+ iterator->arg = (u8 *)radiotap_header + sizeof(*radiotap_header);
+ iterator->this_arg = NULL;
+
+ /* find payload start allowing for extended bitmap(s) */
+
+ if (unlikely(iterator->bitmap_shifter & (1<<IEEE80211_RADIOTAP_EXT))) {
+ while (le32_to_cpu(get_unaligned((__le32 *)iterator->arg)) &
+ (1<<IEEE80211_RADIOTAP_EXT)) {
+ iterator->arg += sizeof(u32);
+
+ /*
+ * check for insanity where the present bitmaps
+ * keep claiming to extend up to or even beyond the
+ * stated radiotap header length
+ */
+
+ if (((ulong)iterator->arg - (ulong)iterator->rtheader)
+ > (ulong)iterator->max_length)
+ return -EINVAL;
+ }
+
+ iterator->arg += sizeof(u32);
+
+ /*
+ * no need to check again for blowing past stated radiotap
+ * header length, because ieee80211_radiotap_iterator_next
+ * checks it before it is dereferenced
+ */
+ }
+
+ /* we are all initialized happily */
+
+ return 0;
+}
+
+
+/**
+ * ieee80211_radiotap_iterator_next - return next radiotap parser iterator arg
+ * @iterator: radiotap_iterator to move to next arg (if any)
+ *
+ * Returns: 0 if there is an argument to handle,
+ * -ENOENT if there are no more args or -EINVAL
+ * if there is something else wrong.
+ *
+ * This function provides the next radiotap arg index (IEEE80211_RADIOTAP_*)
+ * in @this_arg_index and sets @this_arg to point to the
+ * payload for the field. It takes care of alignment handling and extended
+ * present fields. @this_arg can be changed by the caller (eg,
+ * incremented to move inside a compound argument like
+ * IEEE80211_RADIOTAP_CHANNEL). The args pointed to are in
+ * little-endian format whatever the endianess of your CPU.
+ *
+ * Alignment Gotcha:
+ * You must take care when dereferencing iterator.this_arg
+ * for multibyte types... the pointer is not aligned. Use
+ * get_unaligned((type *)iterator.this_arg) to dereference
+ * iterator.this_arg for type "type" safely on all arches.
+ */
+
+int ieee80211_radiotap_iterator_next(
+ struct ieee80211_radiotap_iterator *iterator)
+{
+
+ /*
+ * small length lookup table for all radiotap types we heard of
+ * starting from b0 in the bitmap, so we can walk the payload
+ * area of the radiotap header
+ *
+ * There is a requirement to pad args, so that args
+ * of a given length must begin at a boundary of that length
+ * -- but note that compound args are allowed (eg, 2 x u16
+ * for IEEE80211_RADIOTAP_CHANNEL) so total arg length is not
+ * a reliable indicator of alignment requirement.
+ *
+ * upper nybble: content alignment for arg
+ * lower nybble: content length for arg
+ */
+
+ static const u8 rt_sizes[] = {
+ [IEEE80211_RADIOTAP_TSFT] = 0x88,
+ [IEEE80211_RADIOTAP_FLAGS] = 0x11,
+ [IEEE80211_RADIOTAP_RATE] = 0x11,
+ [IEEE80211_RADIOTAP_CHANNEL] = 0x24,
+ [IEEE80211_RADIOTAP_FHSS] = 0x22,
+ [IEEE80211_RADIOTAP_DBM_ANTSIGNAL] = 0x11,
+ [IEEE80211_RADIOTAP_DBM_ANTNOISE] = 0x11,
+ [IEEE80211_RADIOTAP_LOCK_QUALITY] = 0x22,
+ [IEEE80211_RADIOTAP_TX_ATTENUATION] = 0x22,
+ [IEEE80211_RADIOTAP_DB_TX_ATTENUATION] = 0x22,
+ [IEEE80211_RADIOTAP_DBM_TX_POWER] = 0x11,
+ [IEEE80211_RADIOTAP_ANTENNA] = 0x11,
+ [IEEE80211_RADIOTAP_DB_ANTSIGNAL] = 0x11,
+ [IEEE80211_RADIOTAP_DB_ANTNOISE] = 0x11,
+ [IEEE80211_RADIOTAP_RX_FLAGS] = 0x22,
+ [IEEE80211_RADIOTAP_TX_FLAGS] = 0x22,
+ [IEEE80211_RADIOTAP_RTS_RETRIES] = 0x11,
+ [IEEE80211_RADIOTAP_DATA_RETRIES] = 0x11,
+ /*
+ * add more here as they are defined in
+ * include/net/ieee80211_radiotap.h
+ */
+ };
+
+ /*
+ * for every radiotap entry we can at
+ * least skip (by knowing the length)...
+ */
+
+ while (iterator->arg_index < (int) sizeof(rt_sizes)) {
+ int hit = 0;
+ int pad;
+
+ if (!(iterator->bitmap_shifter & 1))
+ goto next_entry; /* arg not present */
+
+ /*
+ * arg is present, account for alignment padding
+ * 8-bit args can be at any alignment
+ * 16-bit args must start on 16-bit boundary
+ * 32-bit args must start on 32-bit boundary
+ * 64-bit args must start on 64-bit boundary
+ *
+ * note that total arg size can differ from alignment of
+ * elements inside arg, so we use upper nybble of length
+ * table to base alignment on
+ *
+ * also note: these alignments are ** relative to the
+ * start of the radiotap header **. There is no guarantee
+ * that the radiotap header itself is aligned on any
+ * kind of boundary.
+ *
+ * the above is why get_unaligned() is used to dereference
+ * multibyte elements from the radiotap area
+ */
+
+ pad = (((ulong)iterator->arg) -
+ ((ulong)iterator->rtheader)) &
+ ((rt_sizes[iterator->arg_index] >> 4) - 1);
+
+ if (pad)
+ iterator->arg +=
+ (rt_sizes[iterator->arg_index] >> 4) - pad;
+
+ /*
+ * this is what we will return to user, but we need to
+ * move on first so next call has something fresh to test
+ */
+ iterator->this_arg_index = iterator->arg_index;
+ iterator->this_arg = iterator->arg;
+ hit = 1;
+
+ /* internally move on the size of this arg */
+ iterator->arg += rt_sizes[iterator->arg_index] & 0x0f;
+
+ /*
+ * check for insanity where we are given a bitmap that
+ * claims to have more arg content than the length of the
+ * radiotap section. We will normally end up equalling this
+ * max_length on the last arg, never exceeding it.
+ */
+
+ if (((ulong)iterator->arg - (ulong)iterator->rtheader) >
+ (ulong) iterator->max_length)
+ return -EINVAL;
+
+ next_entry:
+ iterator->arg_index++;
+ if (unlikely((iterator->arg_index & 31) == 0)) {
+ /* completed current u32 bitmap */
+ if (iterator->bitmap_shifter & 1) {
+ /* b31 was set, there is more */
+ /* move to next u32 bitmap */
+ iterator->bitmap_shifter = le32_to_cpu(
+ get_unaligned(iterator->next_bitmap));
+ iterator->next_bitmap++;
+ } else
+ /* no more bitmaps: end */
+ iterator->arg_index = sizeof(rt_sizes);
+ } else /* just try the next bit */
+ iterator->bitmap_shifter >>= 1;
+
+ /* if we found a valid arg earlier, return it now */
+ if (hit)
+ return 0;
+ }
+
+ /* we don't know how to handle any more args, we're done */
+ return -ENOENT;
+}
diff -urN hostapd.orig/radiotap.h hostapd/radiotap.h
--- a/hostapd/radiotap.h 1970-01-01 01:00:00.000000000 +0100
+++ b/hostapd/radiotap.h 2008-02-15 23:05:17.000000000 +0100
@@ -0,0 +1,242 @@
+/* $FreeBSD: src/sys/net80211/ieee80211_radiotap.h,v 1.5 2005/01/22 20:12:05 sam Exp $ */
+/* $NetBSD: ieee80211_radiotap.h,v 1.11 2005/06/22 06:16:02 dyoung Exp $ */
+
+/*-
+ * Copyright (c) 2003, 2004 David Young. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of David Young may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID
+ * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ */
+
+/*
+ * Modifications to fit into the linux IEEE 802.11 stack,
+ * Mike Kershaw (dragorn@kismetwireless.net)
+ */
+
+#ifndef IEEE80211RADIOTAP_H
+#define IEEE80211RADIOTAP_H
+
+#include <stdint.h>
+
+/* Base version of the radiotap packet header data */
+#define PKTHDR_RADIOTAP_VERSION 0
+
+/* A generic radio capture format is desirable. There is one for
+ * Linux, but it is neither rigidly defined (there were not even
+ * units given for some fields) nor easily extensible.
+ *
+ * I suggest the following extensible radio capture format. It is
+ * based on a bitmap indicating which fields are present.
+ *
+ * I am trying to describe precisely what the application programmer
+ * should expect in the following, and for that reason I tell the
+ * units and origin of each measurement (where it applies), or else I
+ * use sufficiently weaselly language ("is a monotonically nondecreasing
+ * function of...") that I cannot set false expectations for lawyerly
+ * readers.
+ */
+
+/* The radio capture header precedes the 802.11 header.
+ * All data in the header is little endian on all platforms.
+ */
+struct ieee80211_radiotap_header {
+ uint8_t it_version; /* Version 0. Only increases
+ * for drastic changes,
+ * introduction of compatible
+ * new fields does not count.
+ */
+ uint8_t it_pad;
+ uint16_t it_len; /* length of the whole
+ * header in bytes, including
+ * it_version, it_pad,
+ * it_len, and data fields.
+ */
+ uint32_t it_present; /* A bitmap telling which
+ * fields are present. Set bit 31
+ * (0x80000000) to extend the
+ * bitmap by another 32 bits.
+ * Additional extensions are made
+ * by setting bit 31.
+ */
+};
+
+/* Name Data type Units
+ * ---- --------- -----
+ *
+ * IEEE80211_RADIOTAP_TSFT __le64 microseconds
+ *
+ * Value in microseconds of the MAC's 64-bit 802.11 Time
+ * Synchronization Function timer when the first bit of the
+ * MPDU arrived at the MAC. For received frames, only.
+ *
+ * IEEE80211_RADIOTAP_CHANNEL 2 x uint16_t MHz, bitmap
+ *
+ * Tx/Rx frequency in MHz, followed by flags (see below).
+ *
+ * IEEE80211_RADIOTAP_FHSS uint16_t see below
+ *
+ * For frequency-hopping radios, the hop set (first byte)
+ * and pattern (second byte).
+ *
+ * IEEE80211_RADIOTAP_RATE u8 500kb/s
+ *
+ * Tx/Rx data rate
+ *
+ * IEEE80211_RADIOTAP_DBM_ANTSIGNAL s8 decibels from
+ * one milliwatt (dBm)
+ *
+ * RF signal power at the antenna, decibel difference from
+ * one milliwatt.
+ *
+ * IEEE80211_RADIOTAP_DBM_ANTNOISE s8 decibels from
+ * one milliwatt (dBm)
+ *
+ * RF noise power at the antenna, decibel difference from one
+ * milliwatt.
+ *
+ * IEEE80211_RADIOTAP_DB_ANTSIGNAL u8 decibel (dB)
+ *
+ * RF signal power at the antenna, decibel difference from an
+ * arbitrary, fixed reference.
+ *
+ * IEEE80211_RADIOTAP_DB_ANTNOISE u8 decibel (dB)
+ *
+ * RF noise power at the antenna, decibel difference from an
+ * arbitrary, fixed reference point.
+ *
+ * IEEE80211_RADIOTAP_LOCK_QUALITY uint16_t unitless
+ *
+ * Quality of Barker code lock. Unitless. Monotonically
+ * nondecreasing with "better" lock strength. Called "Signal
+ * Quality" in datasheets. (Is there a standard way to measure
+ * this?)
+ *
+ * IEEE80211_RADIOTAP_TX_ATTENUATION uint16_t unitless
+ *
+ * Transmit power expressed as unitless distance from max
+ * power set at factory calibration. 0 is max power.
+ * Monotonically nondecreasing with lower power levels.
+ *
+ * IEEE80211_RADIOTAP_DB_TX_ATTENUATION uint16_t decibels (dB)
+ *
+ * Transmit power expressed as decibel distance from max power
+ * set at factory calibration. 0 is max power. Monotonically
+ * nondecreasing with lower power levels.
+ *
+ * IEEE80211_RADIOTAP_DBM_TX_POWER s8 decibels from
+ * one milliwatt (dBm)
+ *
+ * Transmit power expressed as dBm (decibels from a 1 milliwatt
+ * reference). This is the absolute power level measured at
+ * the antenna port.
+ *
+ * IEEE80211_RADIOTAP_FLAGS u8 bitmap
+ *
+ * Properties of transmitted and received frames. See flags
+ * defined below.
+ *
+ * IEEE80211_RADIOTAP_ANTENNA u8 antenna index
+ *
+ * Unitless indication of the Rx/Tx antenna for this packet.
+ * The first antenna is antenna 0.
+ *
+ * IEEE80211_RADIOTAP_RX_FLAGS uint16_t bitmap
+ *
+ * Properties of received frames. See flags defined below.
+ *
+ * IEEE80211_RADIOTAP_TX_FLAGS uint16_t bitmap
+ *
+ * Properties of transmitted frames. See flags defined below.
+ *
+ * IEEE80211_RADIOTAP_RTS_RETRIES u8 data
+ *
+ * Number of rts retries a transmitted frame used.
+ *
+ * IEEE80211_RADIOTAP_DATA_RETRIES u8 data
+ *
+ * Number of unicast retries a transmitted frame used.
+ *
+ */
+enum ieee80211_radiotap_type {
+ IEEE80211_RADIOTAP_TSFT = 0,
+ IEEE80211_RADIOTAP_FLAGS = 1,
+ IEEE80211_RADIOTAP_RATE = 2,
+ IEEE80211_RADIOTAP_CHANNEL = 3,
+ IEEE80211_RADIOTAP_FHSS = 4,
+ IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5,
+ IEEE80211_RADIOTAP_DBM_ANTNOISE = 6,
+ IEEE80211_RADIOTAP_LOCK_QUALITY = 7,
+ IEEE80211_RADIOTAP_TX_ATTENUATION = 8,
+ IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9,
+ IEEE80211_RADIOTAP_DBM_TX_POWER = 10,
+ IEEE80211_RADIOTAP_ANTENNA = 11,
+ IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12,
+ IEEE80211_RADIOTAP_DB_ANTNOISE = 13,
+ IEEE80211_RADIOTAP_RX_FLAGS = 14,
+ IEEE80211_RADIOTAP_TX_FLAGS = 15,
+ IEEE80211_RADIOTAP_RTS_RETRIES = 16,
+ IEEE80211_RADIOTAP_DATA_RETRIES = 17,
+ IEEE80211_RADIOTAP_EXT = 31
+};
+
+/* Channel flags. */
+#define IEEE80211_CHAN_TURBO 0x0010 /* Turbo channel */
+#define IEEE80211_CHAN_CCK 0x0020 /* CCK channel */
+#define IEEE80211_CHAN_OFDM 0x0040 /* OFDM channel */
+#define IEEE80211_CHAN_2GHZ 0x0080 /* 2 GHz spectrum channel. */
+#define IEEE80211_CHAN_5GHZ 0x0100 /* 5 GHz spectrum channel */
+#define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */
+#define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */
+#define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */
+
+/* For IEEE80211_RADIOTAP_FLAGS */
+#define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received
+ * during CFP
+ */
+#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received
+ * with short
+ * preamble
+ */
+#define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received
+ * with WEP encryption
+ */
+#define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received
+ * with fragmentation
+ */
+#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */
+#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between
+ * 802.11 header and payload
+ * (to 32-bit boundary)
+ */
+/* For IEEE80211_RADIOTAP_RX_FLAGS */
+#define IEEE80211_RADIOTAP_F_RX_BADFCS 0x0001 /* frame failed crc check */
+
+/* For IEEE80211_RADIOTAP_TX_FLAGS */
+#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive
+ * retries */
+#define IEEE80211_RADIOTAP_F_TX_CTS 0x0002 /* used cts 'protection' */
+#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */
+
+#endif /* IEEE80211_RADIOTAP_H */
diff -urN hostapd.orig/radiotap_iter.h hostapd/radiotap_iter.h
--- a/hostapd/radiotap_iter.h 1970-01-01 01:00:00.000000000 +0100
+++ b/hostapd/radiotap_iter.h 2008-02-15 23:05:17.000000000 +0100
@@ -0,0 +1,41 @@
+#ifndef __RADIOTAP_ITER_H
+#define __RADIOTAP_ITER_H
+
+#include "radiotap.h"
+
+/* Radiotap header iteration
+ * implemented in radiotap.c
+ */
+/**
+ * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args
+ * @rtheader: pointer to the radiotap header we are walking through
+ * @max_length: length of radiotap header in cpu byte ordering
+ * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg
+ * @this_arg: pointer to current radiotap arg
+ * @arg_index: internal next argument index
+ * @arg: internal next argument pointer
+ * @next_bitmap: internal pointer to next present u32
+ * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present
+ */
+
+struct ieee80211_radiotap_iterator {
+ struct ieee80211_radiotap_header *rtheader;
+ int max_length;
+ int this_arg_index;
+ unsigned char *this_arg;
+
+ int arg_index;
+ unsigned char *arg;
+ uint32_t *next_bitmap;
+ uint32_t bitmap_shifter;
+};
+
+extern int ieee80211_radiotap_iterator_init(
+ struct ieee80211_radiotap_iterator *iterator,
+ struct ieee80211_radiotap_header *radiotap_header,
+ int max_length);
+
+extern int ieee80211_radiotap_iterator_next(
+ struct ieee80211_radiotap_iterator *iterator);
+
+#endif /* __RADIOTAP_ITER_H */
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