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Diffstat (limited to '')
| -rw-r--r-- | iw_nl80211.h | 271 |
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 There are different versions, local one may be out of date.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; +} |