Imported Upstream version 0.8.0upstream/0.8.0

1 files changed, 271 insertions, 0 deletions

diff --git a/iw_nl80211.h b/iw_nl80211.h
new file mode 100644
index 0000000..b1c295f
--- /dev/null
+++ b/iw_nl80211.h
@@ -0,0 +1,271 @@
+/*
+ * Definitions and functions for nl80211 based routines.
+ */
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/ctrl.h>
+
+#include <netinet/ether.h>
+#include <stdbool.h>
+
+/*
+ * Use local copy of nl80211.h rather than the one shipped with the distro in
+ * /usr/include/linux. There are different versions, local one may be out of date.
+ */
+#include "nl80211.h"
+
+#define BIT(x) (1ULL<<(x))		/* from iw:iw.h */
+
+/* Set to 1 to enable callback debugging */
+#define IW_NL_CB_DEBUG 0
+
+
+/**
+ * struct msg_attribute - attributes to nla_put into the message
+ * @type:	type of the attribute
+ * @len:	attribute length
+ * @data:	pointer to data area of length @len
+ */
+struct msg_attribute {
+	int		type,
+			len;
+	const void	*data;
+};
+
+/**
+ * struct cmd - stolen and modified from iw:iw.h
+ * @cmd:	  nl80211 command to send via GeNetlink
+ * @sk:		  netlink socket to be used for this command
+ * @flags:	  flags to set in the GeNetlink message
+ * @handler:	  netlink callback handler
+ * @handler_arg:  argument for @handler
+ * @msg_args:	  additional attributes to pass into message
+ * @msg_args_len: number of elements in @msg_args
+ */
+struct cmd {
+	enum nl80211_commands	cmd;
+	struct nl_sock		*sk;
+	int			flags;
+	int (*handler)(struct nl_msg *msg, void *arg);
+	void 			*handler_arg;
+
+	struct msg_attribute	*msg_args;
+	uint8_t			msg_args_len;
+};
+extern int handle_cmd(struct cmd *cmd);
+
+/**
+ * iw_nl80211_ifstat - interface statistics
+ * @phy:	PHY index
+ * @ifindex:	ifindex of receiving interface
+ * @wdev:	wireless device index
+ * @iftype:	interface mode (access point ...)
+ *
+ * @freq:	frequency in MHz
+ * @chan_width:	channel width
+ * @chan_type:	channel type
+ * @freq_ctr1:	center frequency #1
+ * @freq_ctr2:	center frequency #2
+ */
+struct iw_nl80211_ifstat {
+	uint32_t	phy,
+			ifindex,
+			wdev,
+			iftype;
+
+	char		ssid[64];
+
+	uint32_t	freq;
+	int		chan_width,
+			chan_type,
+			freq_ctr1,
+			freq_ctr2;
+};
+extern void iw_nl80211_getifstat(struct iw_nl80211_ifstat *is);
+
+/**
+ * struct iw_nl80211_survey_data - channel survey data
+ * @freq:  channel frequency (only filled in if it is in use)
+ * @noise: channel noise in dBm (0 means invalid data)
+ *
+ * @active:   amount of time that the radio was on
+ * @busy:     amount of the time the primary channel was sensed busy
+ * @ext_busy: amount of time the extension channel was sensed busy
+ * @rx:       amount of time the radio spent receiving data
+ * @tx:       amount of time the radio spent transmitting data
+ * @scan:     time the radio spent for scan
+ */
+struct iw_nl80211_survey {
+	uint32_t	freq;
+	int8_t		noise;
+
+	struct time_data_in_milliseconds {
+		uint64_t	active,
+				busy,
+				ext_busy,
+				rx,
+				tx,
+				scan;
+	} time;
+};
+extern void iw_nl80211_get_survey(struct iw_nl80211_survey *sd);
+
+/* struct iw_nl80211_linkstat - aggregate link statistics
+ * @status:           association status (%nl80211_bss_status)
+ * @bssid:            station MAC address
+ * @inactive_time:    inactivity in msec
+ * @connected_time:   time since last connecting in sec
+ * @beacon_loss:      count of time beacon loss was detected
+ * @rx_bytes/packets: byte/packet counter for RX direction
+ * @rx_drop_misc:     packets dropped for unspecified reasons
+ * @tx_bytes/packets: byte/packet counter for TX direction
+ * @tx_retries:       TX retry counter
+ * @tx_failed:        TX failure counter
+ * @expected_thru:    expected throughput in kB/s
+ * @beacon_int:	      beacon interval in Time Units of 1024usec
+ * @dtim_period:      DTIM period for beaconing
+ * @beacon_avg_sig:   average beacon signal (in dBm)
+ * @beacons:          number of beacons received
+ * @beacon_loss:      count of times beacon loss was detected
+ * @signal:           signal strength in dBm (0 if not present)
+ * @signal_avg:       average signal strength in dBm
+ * @bss_signal:       signal strength of BSS probe in dBm (or 0)
+ * @bss_signal_qual:  unitless signal strength of BSS probe, 0..100
+ * @tx_bitrate:       string describing current TX bitrate
+ * @rx_bitrate:       string describing current RX bitrate
+ * @cts_protection:   whether CTS protection is set
+ * @long_preamble:    whether using long or short preamble
+ * @short_slot_time:  whether short slots are enabled
+ * @wme:              Wireless Multimedia Extensions / Wi-Fi Multimedia
+ * @mfp:              Management Frame Protection
+ * @tdls:             Tunneled Direct Link Setup
+ * @survey:           channel survey data (where present)
+ */
+struct iw_nl80211_linkstat {
+	uint32_t	  	status;
+	struct ether_addr	bssid;
+	/*
+	 * Station details (not always filled in):
+	 */
+	uint32_t		inactive_time,
+				connected_time,
+				rx_bytes,
+				rx_packets;
+	uint64_t		rx_drop_misc;
+
+	uint16_t		beacon_int;
+	uint8_t			dtim_period,
+				beacon_avg_sig;
+	uint64_t		beacons;
+	uint32_t		beacon_loss;
+
+	uint32_t		tx_bytes,
+				tx_packets,
+				tx_retries,
+				tx_failed;
+
+	uint32_t		expected_thru;
+	int8_t			signal,
+				signal_avg;
+
+	int8_t			bss_signal;
+	uint8_t			bss_signal_qual;
+
+	char			tx_bitrate[100],
+				rx_bitrate[100];
+
+	bool			cts_protection:1,
+				long_preamble:1,
+				short_slot_time:1,
+				wme:1,
+				mfp:1,
+				tdls:1;
+	/*
+	 * Channel survey data (requires suitable card, e.g. ath9k).
+	 */
+	struct iw_nl80211_survey	survey;
+};
+extern void iw_nl80211_get_linkstat(struct iw_nl80211_linkstat *ls);
+extern void iw_cache_update(struct iw_nl80211_linkstat *ls);
+
+/* Indicate whether @ls contains usable channel survey data */
+static inline bool iw_nl80211_have_survey_data(struct iw_nl80211_linkstat *ls)
+{
+	return ls->survey.freq != 0 && ls->survey.noise != 0;
+}
+
+/**
+ * struct iw_nl80211_reg - regulatory domain information
+ * @region: 	regulatory DFS region (%nl80211_dfs_regions or -1)
+ * @country:	two-character country code
+ */
+struct iw_nl80211_reg {
+	int	region;
+	char	country[3];
+};
+extern void iw_nl80211_getreg(struct iw_nl80211_reg *ir);
+extern void print_ssid_escaped(char *buf, const size_t buflen,
+			       const uint8_t *data, const size_t datalen);
+
+/*
+ * Multicast event handling (taken from iw:event.c and iw:scan.c)
+ */
+/**
+ * struct wait_event - wait for arrival of a specified message
+ * @cmds:   array of GeNetlink commands (>0) to match
+ * @n_cmds: length of @cmds
+ * @cmd:    matched element of @cmds (if message arrived), else 0
+ */
+struct wait_event {
+	const uint32_t	*cmds;
+	uint8_t		n_cmds;
+	uint32_t	cmd;
+};
+extern struct nl_sock *alloc_nl_mcast_sk(const char *grp);
+
+/*
+ * utils.c
+ */
+extern bool ether_addr_is_zero(const struct ether_addr *ea);
+
+/*
+ * (Ge)Netlink and nl80211 Internals
+ */
+// stolen from iw:station.c
+enum plink_state {
+	LISTEN,
+	OPN_SNT,
+	OPN_RCVD,
+	CNF_RCVD,
+	ESTAB,
+	HOLDING,
+	BLOCKED
+};
+
+/* Predefined handlers, stolen from iw:iw.c */
+static inline int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
+			 void *arg)
+{
+	int *ret = arg;
+	*ret = err->error;
+	return NL_STOP;
+}
+
+static inline int finish_handler(struct nl_msg *msg, void *arg)
+{
+	int *ret = arg;
+	*ret = 0;
+	return NL_SKIP;
+}
+
+static inline int ack_handler(struct nl_msg *msg, void *arg)
+{
+	int *ret = arg;
+	*ret = 0;
+	return NL_STOP;
+}
+
+static inline int no_seq_check(struct nl_msg *msg, void *arg)
+{
+	return NL_OK;
+}