-#include <net/if.h>
#include <errno.h>
#include <string.h>
+#include <stdbool.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include "nl80211.h"
#include "iw.h"
-int isalpha_upper(char letter)
+SECTION(reg);
+
+#define MHZ_TO_KHZ(freq) ((freq) * 1000)
+#define KHZ_TO_MHZ(freq) ((freq) / 1000)
+#define DBI_TO_MBI(gain) ((gain) * 100)
+#define MBI_TO_DBI(gain) ((gain) / 100)
+#define DBM_TO_MBM(gain) ((gain) * 100)
+#define MBM_TO_DBM(gain) ((gain) / 100)
+
+static bool isalpha_upper(char letter)
{
if (letter >= 65 && letter <= 90)
- return 1;
- return 0;
+ return true;
+ return false;
}
-static int is_alpha2(char *alpha2)
+static bool is_alpha2(char *alpha2)
{
if (isalpha_upper(alpha2[0]) && isalpha_upper(alpha2[1]))
- return 1;
- return 0;
+ return true;
+ return false;
}
-static int is_world_regdom(char *alpha2)
+static bool is_world_regdom(char *alpha2)
{
/* ASCII 0 */
if (alpha2[0] == 48 && alpha2[1] == 48)
- return 1;
- return 0;
+ return true;
+ return false;
+}
+
+char *reg_initiator_to_string(__u8 initiator)
+{
+ switch (initiator) {
+ case NL80211_REGDOM_SET_BY_CORE:
+ return "the wireless core upon initialization";
+ case NL80211_REGDOM_SET_BY_USER:
+ return "a user";
+ case NL80211_REGDOM_SET_BY_DRIVER:
+ return "a driver";
+ case NL80211_REGDOM_SET_BY_COUNTRY_IE:
+ return "a country IE";
+ default:
+ return "BUG";
+ }
+}
+
+static const char *dfs_domain_name(enum nl80211_dfs_regions region)
+{
+ switch (region) {
+ case NL80211_DFS_UNSET:
+ return "DFS-UNSET";
+ case NL80211_DFS_FCC:
+ return "DFS-FCC";
+ case NL80211_DFS_ETSI:
+ return "DFS-ETSI";
+ case NL80211_DFS_JP:
+ return "DFS-JP";
+ default:
+ return "DFS-invalid";
+ }
}
-static int handle_reg_set(struct nl_cb *cb,
+static int handle_reg_set(struct nl80211_state *state,
struct nl_msg *msg,
- int argc, char **argv)
+ int argc, char **argv,
+ enum id_input id)
{
char alpha2[3];
return -ENOBUFS;
}
COMMAND(reg, set, "<ISO/IEC 3166-1 alpha2>",
- NL80211_CMD_REQ_SET_REG, 0, CIB_NONE, handle_reg_set);
+ NL80211_CMD_REQ_SET_REG, 0, CIB_NONE, handle_reg_set,
+ "Notify the kernel about the current regulatory domain.");
+
+static int print_reg_handler(struct nl_msg *msg, void *arg)
+{
+#define PARSE_FLAG(nl_flag, string_value) do { \
+ if ((flags & nl_flag)) { \
+ printf(", %s", string_value); \
+ } \
+ } while (0)
+ struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+ char *alpha2;
+ struct nlattr *nl_rule;
+ int rem_rule;
+ enum nl80211_dfs_regions dfs_domain;
+ static struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
+ [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
+ [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
+ [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
+ [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
+ [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
+ [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
+ [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
+ };
+
+ nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), NULL);
+
+ if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
+ printf("No alpha2\n");
+ return NL_SKIP;
+ }
+
+ if (!tb_msg[NL80211_ATTR_REG_RULES]) {
+ printf("No reg rules\n");
+ return NL_SKIP;
+ }
+
+ if (tb_msg[NL80211_ATTR_WIPHY])
+ printf("phy#%d%s\n", nla_get_u32(tb_msg[NL80211_ATTR_WIPHY]),
+ tb_msg[NL80211_ATTR_WIPHY_SELF_MANAGED_REG] ?
+ " (self-managed)" : "");
+ else
+ printf("global\n");
+
+ if (tb_msg[NL80211_ATTR_DFS_REGION])
+ dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
+ else
+ dfs_domain = NL80211_DFS_UNSET;
+
+ alpha2 = nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]);
+ printf("country %c%c: %s\n", alpha2[0], alpha2[1], dfs_domain_name(dfs_domain));
+
+ nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) {
+ struct nlattr *tb_rule[NL80211_REG_RULE_ATTR_MAX + 1];
+ __u32 flags, start_freq_khz, end_freq_khz, max_bw_khz, max_ant_gain_mbi, max_eirp_mbm;
+
+ nla_parse(tb_rule, NL80211_REG_RULE_ATTR_MAX, nla_data(nl_rule), nla_len(nl_rule), reg_rule_policy);
+
+ flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
+ start_freq_khz = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]);
+ end_freq_khz = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]);
+ max_bw_khz = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
+ max_ant_gain_mbi = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
+ max_eirp_mbm = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
+
+
+ printf("\t(%d - %d @ %d), (",
+ KHZ_TO_MHZ(start_freq_khz), KHZ_TO_MHZ(end_freq_khz), KHZ_TO_MHZ(max_bw_khz));
+
+ if (MBI_TO_DBI(max_ant_gain_mbi))
+ printf("%d", MBI_TO_DBI(max_ant_gain_mbi));
+ else
+ printf("N/A");
+
+ printf(", %d)", MBM_TO_DBM(max_eirp_mbm));
+
+ if ((flags & NL80211_RRF_DFS) && tb_rule[NL80211_ATTR_DFS_CAC_TIME])
+ printf(", (%u ms)", nla_get_u32(tb_rule[NL80211_ATTR_DFS_CAC_TIME]));
+ else
+ printf(", (N/A)");
+
+ if (!flags) {
+ printf("\n");
+ continue;
+ }
+
+ /* Sync this output format to match that of dbparse.py from wireless-regdb.git */
+ PARSE_FLAG(NL80211_RRF_NO_OFDM, "NO-OFDM");
+ PARSE_FLAG(NL80211_RRF_NO_CCK, "NO-CCK");
+ PARSE_FLAG(NL80211_RRF_NO_INDOOR, "NO-INDOOR");
+ PARSE_FLAG(NL80211_RRF_NO_OUTDOOR, "NO-OUTDOOR");
+ PARSE_FLAG(NL80211_RRF_DFS, "DFS");
+ PARSE_FLAG(NL80211_RRF_PTP_ONLY, "PTP-ONLY");
+ PARSE_FLAG(NL80211_RRF_AUTO_BW, "AUTO-BW");
+ PARSE_FLAG(NL80211_RRF_IR_CONCURRENT, "IR-CONCURRENT");
+ PARSE_FLAG(NL80211_RRF_NO_HT40MINUS, "NO-HT40MINUS");
+ PARSE_FLAG(NL80211_RRF_NO_HT40PLUS, "NO-HT40PLUS");
+ PARSE_FLAG(NL80211_RRF_NO_80MHZ, "NO-80MHZ");
+ PARSE_FLAG(NL80211_RRF_NO_160MHZ, "NO-160MHZ");
+
+ /* Kernels that support NO_IR always turn on both flags */
+ if ((flags & NL80211_RRF_NO_IR) && (flags & __NL80211_RRF_NO_IBSS)) {
+ printf(", NO-IR");
+ } else {
+ PARSE_FLAG(NL80211_RRF_PASSIVE_SCAN, "PASSIVE-SCAN");
+ PARSE_FLAG(__NL80211_RRF_NO_IBSS, "NO-IBSS");
+ }
+
+ printf("\n");
+ }
+
+ printf("\n");
+ return NL_SKIP;
+#undef PARSE_FLAG
+}
+
+static int handle_reg_dump(struct nl80211_state *state,
+ struct nl_msg *msg,
+ int argc, char **argv,
+ enum id_input id)
+{
+ register_handler(print_reg_handler, NULL);
+ return 0;
+}
+
+static int handle_reg_get(struct nl80211_state *state,
+ struct nl_msg *msg,
+ int argc, char **argv,
+ enum id_input id)
+{
+ char *dump_args[] = { "reg", "dump" };
+ int err;
+
+ err = handle_cmd(state, II_NONE, 2, dump_args);
+ /*
+ * dump might fail since it's not supported on older kernels,
+ * in that case the handler is still registered already
+ */
+ if (err == -EOPNOTSUPP)
+ return 0;
+
+ return err ?: HANDLER_RET_DONE;
+}
+COMMAND(reg, get, NULL, NL80211_CMD_GET_REG, 0, CIB_NONE, handle_reg_get,
+ "Print out the kernel's current regulatory domain information.");
+COMMAND(reg, get, NULL, NL80211_CMD_GET_REG, 0, CIB_PHY, handle_reg_get,
+ "Print out the devices' current regulatory domain information.");
+HIDDEN(reg, dump, NULL, NL80211_CMD_GET_REG, NLM_F_DUMP, CIB_NONE,
+ handle_reg_dump);
+
+static int handle_reg_reload(struct nl80211_state *state,
+ struct nl_msg *msg,
+ int argc, char **argv,
+ enum id_input id)
+{
+ return 0;
+}
+COMMAND(reg, reload, NULL, NL80211_CMD_RELOAD_REGDB, 0, CIB_NONE,
+ handle_reg_reload, "Reload the kernel's regulatory database.");