iw.h

   1 #ifndef __IW_H
   2 #define __IW_H
   3
   4 #include <stdbool.h>
   5 #include <netlink/netlink.h>
   6 #include <netlink/genl/genl.h>
   7 #include <netlink/genl/family.h>
   8 #include <netlink/genl/ctrl.h>
   9 #include <endian.h>
  10
  11 #include "nl80211.h"
  12 #include "ieee80211.h"
  13
  14 /* support for extack if compilation headers are too old */
  15 #ifndef NETLINK_EXT_ACK
  16 #define NETLINK_EXT_ACK 11
  17 enum nlmsgerr_attrs {
  18         NLMSGERR_ATTR_UNUSED,
  19         NLMSGERR_ATTR_MSG,
  20         NLMSGERR_ATTR_OFFS,
  21         NLMSGERR_ATTR_COOKIE,
  22
  23         __NLMSGERR_ATTR_MAX,
  24         NLMSGERR_ATTR_MAX = __NLMSGERR_ATTR_MAX - 1
  25 };
  26 #endif
  27 #ifndef NLM_F_CAPPED
  28 #define NLM_F_CAPPED 0x100
  29 #endif
  30 #ifndef NLM_F_ACK_TLVS
  31 #define NLM_F_ACK_TLVS 0x200
  32 #endif
  33
  34 #define ETH_ALEN 6
  35 #define VHT_MUMIMO_GROUP_LEN 24
  36
  37 /* libnl 1.x compatibility code */
  38 #if !defined(CONFIG_LIBNL20) && !defined(CONFIG_LIBNL30)
  39 #  define nl_sock nl_handle
  40 #endif
  41
  42 struct nl80211_state {
  43         struct nl_sock *nl_sock;
  44         int nl80211_id;
  45 };
  46
  47 enum command_identify_by {
  48         CIB_NONE,
  49         CIB_PHY,
  50         CIB_NETDEV,
  51         CIB_WDEV,
  52 };
  53
  54 enum id_input {
  55         II_NONE,
  56         II_NETDEV,
  57         II_PHY_NAME,
  58         II_PHY_IDX,
  59         II_WDEV,
  60 };
  61
  62 #define HANDLER_RET_USAGE 1
  63 #define HANDLER_RET_DONE 3
  64
  65 struct cmd {
  66         const char *name;
  67         const char *args;
  68         const char *help;
  69         const enum nl80211_commands cmd;
  70         int nl_msg_flags;
  71         int hidden;
  72         const enum command_identify_by idby;
  73         /*
  74          * The handler should return a negative error code,
  75          * zero on success, 1 if the arguments were wrong.
  76          * Return 2 iff you provide the error message yourself.
  77          */
  78         int (*handler)(struct nl80211_state *state,
  79                        struct nl_msg *msg,
  80                        int argc, char **argv,
  81                        enum id_input id);
  82         const struct cmd *(*selector)(int argc, char **argv);
  83         const struct cmd *parent;
  84 };
  85
  86 struct chanmode {
  87         const char *name;
  88         unsigned int width;
  89         int freq1_diff;
  90         int chantype; /* for older kernel */
  91 };
  92
  93 struct chandef {
  94         enum nl80211_chan_width width;
  95
  96         unsigned int control_freq;
  97         unsigned int center_freq1;
  98         unsigned int center_freq2;
  99 };
 100
 101 #define ARRAY_SIZE(ar) (sizeof(ar)/sizeof(ar[0]))
 102 #define DIV_ROUND_UP(x, y) (((x) + (y - 1)) / (y))
 103
 104 #define __COMMAND(_section, _symname, _name, _args, _nlcmd, _flags, _hidden, _idby, _handler, _help, _sel)\
 105         static struct cmd                                               \
 106         __cmd ## _ ## _symname ## _ ## _handler ## _ ## _nlcmd ## _ ## _idby ## _ ## _hidden\
 107         __attribute__((used)) __attribute__((section("__cmd"))) = {     \
 108                 .name = (_name),                                        \
 109                 .args = (_args),                                        \
 110                 .cmd = (_nlcmd),                                        \
 111                 .nl_msg_flags = (_flags),                               \
 112                 .hidden = (_hidden),                                    \
 113                 .idby = (_idby),                                        \
 114                 .handler = (_handler),                                  \
 115                 .help = (_help),                                        \
 116                 .parent = _section,                                     \
 117                 .selector = (_sel),                                     \
 118         }
 119 #define __ACMD(_section, _symname, _name, _args, _nlcmd, _flags, _hidden, _idby, _handler, _help, _sel, _alias)\
 120         __COMMAND(_section, _symname, _name, _args, _nlcmd, _flags, _hidden, _idby, _handler, _help, _sel);\
 121         static const struct cmd *_alias = &__cmd ## _ ## _symname ## _ ## _handler ## _ ## _nlcmd ## _ ## _idby ## _ ## _hidden
 122 #define COMMAND(section, name, args, cmd, flags, idby, handler, help)   \
 123         __COMMAND(&(__section ## _ ## section), name, #name, args, cmd, flags, 0, idby, handler, help, NULL)
 124 #define COMMAND_ALIAS(section, name, args, cmd, flags, idby, handler, help, selector, alias)\
 125         __ACMD(&(__section ## _ ## section), name, #name, args, cmd, flags, 0, idby, handler, help, selector, alias)
 126 #define HIDDEN(section, name, args, cmd, flags, idby, handler)          \
 127         __COMMAND(&(__section ## _ ## section), name, #name, args, cmd, flags, 1, idby, handler, NULL, NULL)
 128
 129 #define TOPLEVEL(_name, _args, _nlcmd, _flags, _idby, _handler, _help)  \
 130         struct cmd                                                      \
 131         __section ## _ ## _name                                         \
 132         __attribute__((used)) __attribute__((section("__cmd"))) = {     \
 133                 .name = (#_name),                                       \
 134                 .args = (_args),                                        \
 135                 .cmd = (_nlcmd),                                        \
 136                 .nl_msg_flags = (_flags),                               \
 137                 .idby = (_idby),                                        \
 138                 .handler = (_handler),                                  \
 139                 .help = (_help),                                        \
 140          }
 141 #define SECTION(_name)                                                  \
 142         struct cmd __section ## _ ## _name                              \
 143         __attribute__((used)) __attribute__((section("__cmd"))) = {     \
 144                 .name = (#_name),                                       \
 145                 .hidden = 1,                                            \
 146         }
 147
 148 #define DECLARE_SECTION(_name)                                          \
 149         extern struct cmd __section ## _ ## _name;
 150
 151 extern const char iw_version[];
 152
 153 extern int iw_debug;
 154
 155 int handle_cmd(struct nl80211_state *state, enum id_input idby,
 156                int argc, char **argv);
 157
 158 struct print_event_args {
 159         struct timeval ts; /* internal */
 160         bool have_ts; /* must be set false */
 161         bool frame, time, reltime;
 162 };
 163
 164 __u32 listen_events(struct nl80211_state *state,
 165                     const int n_waits, const __u32 *waits);
 166 int __prepare_listen_events(struct nl80211_state *state);
 167 __u32 __do_listen_events(struct nl80211_state *state,
 168                          const int n_waits, const __u32 *waits,
 169                          struct print_event_args *args);
 170
 171 int valid_handler(struct nl_msg *msg, void *arg);
 172 void register_handler(int (*handler)(struct nl_msg *, void *), void *data);
 173
 174 int mac_addr_a2n(unsigned char *mac_addr, char *arg);
 175 void mac_addr_n2a(char *mac_addr, unsigned char *arg);
 176 int parse_hex_mask(char *hexmask, unsigned char **result, size_t *result_len,
 177                    unsigned char **mask);
 178 unsigned char *parse_hex(char *hex, size_t *outlen);
 179
 180 int parse_keys(struct nl_msg *msg, char **argv, int argc);
 181 int parse_freqchan(struct chandef *chandef, bool chan, int argc, char **argv, int *parsed);
 182 enum nl80211_chan_width str_to_bw(const char *str);
 183 int put_chandef(struct nl_msg *msg, struct chandef *chandef);
 184
 185 void print_ht_mcs(const __u8 *mcs);
 186 void print_ampdu_length(__u8 exponent);
 187 void print_ampdu_spacing(__u8 spacing);
 188 void print_ht_capability(__u16 cap);
 189 void print_vht_info(__u32 capa, const __u8 *mcs);
 190
 191 char *channel_width_name(enum nl80211_chan_width width);
 192 const char *iftype_name(enum nl80211_iftype iftype);
 193 const char *command_name(enum nl80211_commands cmd);
 194 int ieee80211_channel_to_frequency(int chan, enum nl80211_band band);
 195 int ieee80211_frequency_to_channel(int freq);
 196
 197 void print_ssid_escaped(const uint8_t len, const uint8_t *data);
 198
 199 int nl_get_multicast_id(struct nl_sock *sock, const char *family, const char *group);
 200
 201 char *reg_initiator_to_string(__u8 initiator);
 202
 203 const char *get_reason_str(uint16_t reason);
 204 const char *get_status_str(uint16_t status);
 205
 206 enum print_ie_type {
 207         PRINT_SCAN,
 208         PRINT_LINK,
 209 };
 210
 211 #define BIT(x) (1ULL<<(x))
 212
 213 void print_ies(unsigned char *ie, int ielen, bool unknown,
 214                enum print_ie_type ptype);
 215
 216 void parse_bitrate(struct nlattr *bitrate_attr, char *buf, int buflen);
 217 void iw_hexdump(const char *prefix, const __u8 *data, size_t len);
 218
 219 int get_cf1(const struct chanmode *chanmode, unsigned long freq);
 220
 221 #define SCHED_SCAN_OPTIONS "[interval <in_msecs> | scan_plans [<interval_secs:iterations>*] <interval_secs>] "  \
 222         "[delay <in_secs>] [freqs <freq>+] [matches [ssid <ssid>]+]] [active [ssid <ssid>]+|passive] "  \
 223         "[randomise[=<addr>/<mask>]]"
 224 int parse_sched_scan(struct nl_msg *msg, int *argc, char ***argv);
 225
 226 DECLARE_SECTION(switch);
 227 DECLARE_SECTION(set);
 228 DECLARE_SECTION(get);
 229
 230 #endif /* __IW_H */