nl80211: Preliminary code for usermode MLME support
This adds some parts needed to use usermode MLME with the current mac80211
(plus a patch to add a new cfg80211 command; not yet submitted to
wireless-testing). This version creates a monitor interface for management
frames and is able to send Probe Request frames during scan. However, it
looks like management frame reception is not yet working properly. In
addition, mlme_{add,remove}_sta() handlers are still missing.
This commit is contained in:
Jouni Malinen
Jouni Malinen
parent
101533269f
commit
1c8735848d
5 changed files with 1201 additions and 0 deletions
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@ -19,6 +19,12 @@
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#include <netlink/genl/family.h>
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#include <netlink/genl/family.h>
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#include <netlink/genl/ctrl.h>
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#include <netlink/genl/ctrl.h>
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#include <linux/nl80211.h>
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#include <linux/nl80211.h>
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#ifdef CONFIG_CLIENT_MLME
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#include <netpacket/packet.h>
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#include <linux/if_ether.h>
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#include "radiotap.h"
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#include "radiotap_iter.h"
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#endif /* CONFIG_CLIENT_MLME */
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#include "wireless_copy.h"
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#include "wireless_copy.h"
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#include "common.h"
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#include "common.h"
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@ -70,6 +76,11 @@ struct wpa_driver_nl80211_data {
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struct nl_cache *nl_cache;
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struct nl_cache *nl_cache;
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struct nl_cb *nl_cb;
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struct nl_cb *nl_cb;
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struct genl_family *nl80211;
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struct genl_family *nl80211;
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#ifdef CONFIG_CLIENT_MLME
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int monitor_sock; /* socket for monitor */
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int monitor_ifidx;
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#endif /* CONFIG_CLIENT_MLME */
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};
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};
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@ -889,6 +900,276 @@ static int wpa_driver_nl80211_set_ifflags(struct wpa_driver_nl80211_data *drv,
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}
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}
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#ifdef CONFIG_CLIENT_MLME
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static int nl80211_set_vif(struct wpa_driver_nl80211_data *drv,
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int drop_unencrypted, int userspace_mlme)
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{
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#ifdef NL80211_CMD_SET_VIF
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struct nl_msg *msg;
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int ret = -1;
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msg = nlmsg_alloc();
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if (!msg)
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goto out;
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
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NL80211_CMD_SET_VIF, 0);
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if (drop_unencrypted >= 0)
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NLA_PUT_U8(msg, NL80211_ATTR_VIF_DROP_UNENCRYPTED,
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drop_unencrypted);
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if (userspace_mlme >= 0)
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NLA_PUT_U8(msg, NL80211_ATTR_VIF_USERSPACE_MLME,
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userspace_mlme);
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ret = 0;
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
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if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
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nl_wait_for_ack(drv->nl_handle) < 0) {
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ret = -1;
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}
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nla_put_failure:
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nlmsg_free(msg);
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out:
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return ret;
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#else /* NL80211_CMD_SET_VIF */
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return -1;
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#endif /* NL80211_CMD_SET_VIF */
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}
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static int wpa_driver_nl80211_set_userspace_mlme(
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struct wpa_driver_nl80211_data *drv, int enabled)
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{
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return nl80211_set_vif(drv, -1, enabled);
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}
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static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
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int ifidx)
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{
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struct nl_msg *msg;
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msg = nlmsg_alloc();
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if (!msg)
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goto nla_put_failure;
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
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0, NL80211_CMD_DEL_INTERFACE, 0);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
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if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
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nl_wait_for_ack(drv->nl_handle) < 0) {
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nla_put_failure:
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wpa_printf(MSG_ERROR, "nl80211: Failed to remove interface.");
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}
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nlmsg_free(msg);
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}
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static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
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const char *ifname, enum nl80211_iftype iftype)
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{
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struct nl_msg *msg, *flags = NULL;
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int ifidx, err;
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msg = nlmsg_alloc();
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if (!msg)
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return -1;
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
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0, NL80211_CMD_NEW_INTERFACE, 0);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
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NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
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NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
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if (iftype == NL80211_IFTYPE_MONITOR) {
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flags = nlmsg_alloc();
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if (!flags)
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goto nla_put_failure;
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NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
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err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
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nlmsg_free(flags);
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if (err)
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goto nla_put_failure;
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}
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err = nl_send_auto_complete(drv->nl_handle, msg);
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if (err < 0)
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wpa_printf(MSG_ERROR, "nl80211: nl_send_auto_complete failed: "
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"%d (create_iface)", err);
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else {
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err = nl_wait_for_ack(drv->nl_handle);
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if (err < 0)
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wpa_printf(MSG_ERROR, "nl80211: nl_wait_for_ack "
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"failed: %d (create_iface)", err);
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}
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if (err < 0) {
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nla_put_failure:
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wpa_printf(MSG_ERROR, "nl80211: Failed to create interface "
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"%s.", ifname);
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nlmsg_free(msg);
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return -1;
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}
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nlmsg_free(msg);
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ifidx = if_nametoindex(ifname);
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if (ifidx <= 0)
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return -1;
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return ifidx;
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}
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static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
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{
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struct wpa_driver_nl80211_data *drv = eloop_ctx;
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int len;
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unsigned char buf[3000];
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struct ieee80211_radiotap_iterator iter;
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int ret;
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int injected = 0, failed = 0, rxflags = 0;
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struct ieee80211_rx_status rx_status;
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len = recv(sock, buf, sizeof(buf), 0);
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if (len < 0) {
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perror("recv");
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return;
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}
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if (ieee80211_radiotap_iterator_init(&iter, (void *) buf, len)) {
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wpa_printf(MSG_DEBUG, "nl80211: received invalid radiotap "
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"frame");
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return;
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}
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os_memset(&rx_status, 0, sizeof(rx_status));
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while (1) {
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ret = ieee80211_radiotap_iterator_next(&iter);
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if (ret == -ENOENT)
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break;
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if (ret) {
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wpa_printf(MSG_DEBUG, "nl80211: received invalid "
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"radiotap frame (%d)", ret);
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return;
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}
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switch (iter.this_arg_index) {
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case IEEE80211_RADIOTAP_FLAGS:
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if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
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len -= 4;
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break;
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case IEEE80211_RADIOTAP_RX_FLAGS:
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rxflags = 1;
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break;
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case IEEE80211_RADIOTAP_TX_FLAGS:
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injected = 1;
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failed = le_to_host16((*(u16 *) iter.this_arg)) &
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IEEE80211_RADIOTAP_F_TX_FAIL;
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break;
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case IEEE80211_RADIOTAP_DATA_RETRIES:
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break;
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case IEEE80211_RADIOTAP_CHANNEL:
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/* TODO convert from freq/flags to channel number
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* rx_status.channel = XXX;
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*/
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break;
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case IEEE80211_RADIOTAP_RATE:
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break;
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case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
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rx_status.ssi = *iter.this_arg;
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break;
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}
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}
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if (rxflags && injected)
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return;
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if (!injected) {
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wpa_supplicant_sta_rx(drv->ctx, buf + iter.max_length,
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len - iter.max_length, &rx_status);
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} else if (failed) {
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/* TX failure callback */
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} else {
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/* TX success (ACK) callback */
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}
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}
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static int wpa_driver_nl80211_create_monitor_interface(
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struct wpa_driver_nl80211_data *drv)
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{
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char buf[IFNAMSIZ];
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struct sockaddr_ll ll;
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int optval, flags;
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socklen_t optlen;
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os_snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
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buf[IFNAMSIZ - 1] = '\0';
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drv->monitor_ifidx =
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nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR);
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if (drv->monitor_ifidx < 0)
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return -1;
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if (wpa_driver_nl80211_get_ifflags_ifname(drv, buf, &flags) != 0 ||
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wpa_driver_nl80211_set_ifflags_ifname(drv, buf, flags | IFF_UP) !=
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0) {
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wpa_printf(MSG_ERROR, "nl80211: Could not set interface '%s' "
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"UP", buf);
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goto error;
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}
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os_memset(&ll, 0, sizeof(ll));
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ll.sll_family = AF_PACKET;
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ll.sll_ifindex = drv->monitor_ifidx;
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drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
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if (drv->monitor_sock < 0) {
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perror("socket[PF_PACKET,SOCK_RAW]");
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goto error;
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}
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if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
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sizeof(ll)) < 0) {
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perror("monitor socket bind");
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goto error;
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}
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optlen = sizeof(optval);
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optval = 20;
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if (setsockopt
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(drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
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perror("Failed to set socket priority");
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goto error;
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}
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if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
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drv, NULL)) {
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wpa_printf(MSG_ERROR, "nl80211: Could not register monitor "
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"read socket");
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goto error;
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}
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return 0;
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error:
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nl80211_remove_iface(drv, drv->monitor_ifidx);
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return -1;
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}
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#endif /* CONFIG_CLIENT_MLME */
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/**
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/**
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* wpa_driver_nl80211_init - Initialize WE driver interface
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* wpa_driver_nl80211_init - Initialize WE driver interface
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* @ctx: context to be used when calling wpa_supplicant functions,
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* @ctx: context to be used when calling wpa_supplicant functions,
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@ -1041,6 +1322,17 @@ void wpa_driver_nl80211_deinit(void *priv)
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struct wpa_driver_nl80211_data *drv = priv;
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struct wpa_driver_nl80211_data *drv = priv;
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int flags;
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int flags;
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#ifdef CONFIG_CLIENT_MLME
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if (drv->monitor_sock >= 0) {
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eloop_unregister_read_sock(drv->monitor_sock);
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close(drv->monitor_sock);
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}
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if (drv->monitor_ifidx > 0)
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nl80211_remove_iface(drv, drv->monitor_ifidx);
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if (drv->capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
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wpa_driver_nl80211_set_userspace_mlme(drv, 0);
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#endif /* CONFIG_CLIENT_MLME */
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eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
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eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
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/*
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/*
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@ -2152,6 +2444,334 @@ static int wpa_driver_nl80211_set_operstate(void *priv, int state)
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}
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}
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#ifdef CONFIG_CLIENT_MLME
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static int wpa_driver_nl80211_open_mlme(struct wpa_driver_nl80211_data *drv)
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{
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if (wpa_driver_nl80211_set_userspace_mlme(drv, 1) < 0) {
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wpa_printf(MSG_ERROR, "nl80211: Failed to enable userspace "
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"MLME");
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return -1;
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}
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if (wpa_driver_nl80211_create_monitor_interface(drv)) {
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wpa_printf(MSG_ERROR, "nl80211: Failed to create monitor "
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"interface");
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return -1;
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}
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return 0;
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}
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#endif /* CONFIG_CLIENT_MLME */
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static int wpa_driver_nl80211_set_param(void *priv, const char *param)
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{
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#ifdef CONFIG_CLIENT_MLME
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struct wpa_driver_nl80211_data *drv = priv;
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if (param == NULL)
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return 0;
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wpa_printf(MSG_DEBUG, "%s: param='%s'", __func__, param);
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if (os_strstr(param, "use_mlme=1")) {
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wpa_printf(MSG_DEBUG, "nl80211: Using user space MLME");
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drv->capa.flags |= WPA_DRIVER_FLAGS_USER_SPACE_MLME;
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if (wpa_driver_nl80211_open_mlme(drv))
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return -1;
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}
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#endif /* CONFIG_CLIENT_MLME */
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return 0;
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}
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#ifdef CONFIG_CLIENT_MLME
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static int ack_wait_handler(struct nl_msg *msg, void *arg)
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{
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int *finished = arg;
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|
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*finished = 1;
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return NL_STOP;
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}
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struct phy_info_arg {
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||||||
|
u16 *num_modes;
|
||||||
|
struct wpa_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 wpa_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 = os_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)];
|
||||||
|
os_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 = os_zalloc(mode->num_channels *
|
||||||
|
sizeof(struct wpa_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 |= WPA_CHAN_W_SCAN |
|
||||||
|
WPA_CHAN_W_ACTIVE_SCAN |
|
||||||
|
WPA_CHAN_W_IBSS;
|
||||||
|
|
||||||
|
if (!mode_is_set) {
|
||||||
|
/* crude heuristic */
|
||||||
|
if (mode->channels[idx].freq < 4000)
|
||||||
|
mode->mode = WPA_MODE_IEEE80211B;
|
||||||
|
else
|
||||||
|
mode->mode = WPA_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 &= ~WPA_CHAN_W_SCAN;
|
||||||
|
if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
|
||||||
|
mode->channels[idx].flag &=
|
||||||
|
~WPA_CHAN_W_ACTIVE_SCAN;
|
||||||
|
if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
|
||||||
|
mode->channels[idx].flag &= ~WPA_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 = os_zalloc(mode->num_rates *
|
||||||
|
sizeof(struct wpa_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 == WPA_MODE_IEEE80211B &&
|
||||||
|
mode->rates[idx].rate > 200)
|
||||||
|
mode->mode = WPA_MODE_IEEE80211G;
|
||||||
|
|
||||||
|
if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
|
||||||
|
mode->rates[idx].flags |= WPA_RATE_PREAMBLE2;
|
||||||
|
|
||||||
|
idx++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
phy_info->error = 0;
|
||||||
|
|
||||||
|
return NL_SKIP;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static struct wpa_hw_modes *
|
||||||
|
wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
|
||||||
|
{
|
||||||
|
struct wpa_driver_nl80211_data *drv = priv;
|
||||||
|
struct nl_msg *msg;
|
||||||
|
int err = -1;
|
||||||
|
struct nl_cb *cb = NULL;
|
||||||
|
int finished = 0;
|
||||||
|
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, drv->ifindex);
|
||||||
|
|
||||||
|
cb = nl_cb_clone(drv->nl_cb);
|
||||||
|
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) {
|
||||||
|
wpa_supplicant_sta_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 wpa_driver_nl80211_set_channel(void *priv, wpa_hw_mode phymode,
|
||||||
|
int chan, int freq)
|
||||||
|
{
|
||||||
|
return wpa_driver_nl80211_set_freq(priv, freq);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
|
||||||
|
size_t data_len)
|
||||||
|
{
|
||||||
|
struct wpa_driver_nl80211_data *drv = priv;
|
||||||
|
__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 iovec iov[2] = {
|
||||||
|
{
|
||||||
|
.iov_base = &rtap_hdr,
|
||||||
|
.iov_len = sizeof(rtap_hdr),
|
||||||
|
},
|
||||||
|
{
|
||||||
|
.iov_base = (void *) data,
|
||||||
|
.iov_len = data_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 (sendmsg(drv->monitor_sock, &msg, 0) < 0) {
|
||||||
|
perror("send[MLME]");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* CONFIG_CLIENT_MLME */
|
||||||
|
|
||||||
|
|
||||||
const struct wpa_driver_ops wpa_driver_nl80211_ops = {
|
const struct wpa_driver_ops wpa_driver_nl80211_ops = {
|
||||||
.name = "nl80211",
|
.name = "nl80211",
|
||||||
.desc = "Linux nl80211/cfg80211",
|
.desc = "Linux nl80211/cfg80211",
|
||||||
|
|
@ -2169,9 +2789,17 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
|
||||||
.set_auth_alg = wpa_driver_nl80211_set_auth_alg,
|
.set_auth_alg = wpa_driver_nl80211_set_auth_alg,
|
||||||
.init = wpa_driver_nl80211_init,
|
.init = wpa_driver_nl80211_init,
|
||||||
.deinit = wpa_driver_nl80211_deinit,
|
.deinit = wpa_driver_nl80211_deinit,
|
||||||
|
.set_param = wpa_driver_nl80211_set_param,
|
||||||
.add_pmkid = wpa_driver_nl80211_add_pmkid,
|
.add_pmkid = wpa_driver_nl80211_add_pmkid,
|
||||||
.remove_pmkid = wpa_driver_nl80211_remove_pmkid,
|
.remove_pmkid = wpa_driver_nl80211_remove_pmkid,
|
||||||
.flush_pmkid = wpa_driver_nl80211_flush_pmkid,
|
.flush_pmkid = wpa_driver_nl80211_flush_pmkid,
|
||||||
.get_capa = wpa_driver_nl80211_get_capa,
|
.get_capa = wpa_driver_nl80211_get_capa,
|
||||||
.set_operstate = wpa_driver_nl80211_set_operstate,
|
.set_operstate = wpa_driver_nl80211_set_operstate,
|
||||||
|
#ifdef CONFIG_CLIENT_MLME
|
||||||
|
.get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
|
||||||
|
.set_channel = wpa_driver_nl80211_set_channel,
|
||||||
|
.set_ssid = wpa_driver_nl80211_set_ssid,
|
||||||
|
.set_bssid = wpa_driver_nl80211_set_bssid,
|
||||||
|
.send_mlme = wpa_driver_nl80211_send_mlme,
|
||||||
|
#endif /* CONFIG_CLIENT_MLME */
|
||||||
};
|
};
|
||||||
|
|
|
||||||
287
src/drivers/radiotap.c
Normal file
287
src/drivers/radiotap.c
Normal file
|
|
@ -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;
|
||||||
|
}
|
||||||
242
src/drivers/radiotap.h
Normal file
242
src/drivers/radiotap.h
Normal file
|
|
@ -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 */
|
||||||
41
src/drivers/radiotap_iter.h
Normal file
41
src/drivers/radiotap_iter.h
Normal file
|
|
@ -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 */
|
||||||
|
|
@ -131,6 +131,9 @@ ifdef CONFIG_DRIVER_NL80211
|
||||||
CFLAGS += -DCONFIG_DRIVER_NL80211
|
CFLAGS += -DCONFIG_DRIVER_NL80211
|
||||||
OBJS_d += ../src/drivers/driver_nl80211.o
|
OBJS_d += ../src/drivers/driver_nl80211.o
|
||||||
LIBS += -lnl
|
LIBS += -lnl
|
||||||
|
ifdef CONFIG_CLIENT_MLME
|
||||||
|
OBJS_d += ../src/drivers/radiotap.o
|
||||||
|
endif
|
||||||
endif
|
endif
|
||||||
|
|
||||||
ifdef CONFIG_DRIVER_PRISM54
|
ifdef CONFIG_DRIVER_PRISM54
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue