support for antenna configuration profiles

@@ -180,6 +180,58 @@ static int print_phy_handler(struct nl_m
 		       nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_ANTENNA_TX]),
 		       nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_ANTENNA_RX]));
 
+	if (tb_msg[NL80211_ATTR_WIPHY_EXTANT]) {
+		static struct nla_policy extant_policy[NL80211_EXTANT_ATTR_MAX + 1] = {
+			[NL80211_EXTANT_ATTR_STATE] = { .type = NLA_U32 },
+			[NL80211_EXTANT_ATTR_PROFILES] = { .type = NLA_NESTED },
+		};
+		struct nlattr *tb_extant[NL80211_EXTANT_ATTR_MAX + 1];
+		struct nlattr *nl_easp, *tb_easp[NL80211_EASP_ATTR_MAX + 1];
+		int err, rem_easp;
+		int current_profile, num_profiles = 0;
+		int id;
+		int i;
+		static struct nla_policy easp_policy[NL80211_EASP_ATTR_MAX + 1] = {
+			[NL80211_EASP_ATTR_ID] = { .type = NLA_U32 },
+			[NL80211_EASP_ATTR_NAME] = { },
+			[NL80211_EASP_ATTR_DESC] = { },
+		};
+
+		printf("\tDevice supports antenna configuration profiles.\n");
+		err = nla_parse_nested(tb_extant, NL80211_EXTANT_ATTR_MAX, tb_msg[NL80211_ATTR_WIPHY_EXTANT], extant_policy);
+		if (err)
+			goto broken_extant;
+
+		if (tb_extant[NL80211_EXTANT_ATTR_STATE])
+			current_profile = nla_get_u32(tb_extant[NL80211_EXTANT_ATTR_STATE]);
+		else
+			current_profile = -1;
+
+		nla_for_each_nested(nl_easp, tb_extant[NL80211_EXTANT_ATTR_PROFILES], rem_easp) {
+			num_profiles++;
+		}
+
+		nla_for_each_nested(nl_easp, tb_extant[NL80211_EXTANT_ATTR_PROFILES], rem_easp)
+		{
+			err = nla_parse(tb_easp, NL80211_EASP_ATTR_MAX, nla_data(nl_easp), nla_len(nl_easp), easp_policy);
+
+			if (err || !tb_easp[NL80211_EASP_ATTR_ID] || !tb_easp[NL80211_EASP_ATTR_NAME] || !tb_easp[NL80211_EASP_ATTR_DESC]) {
+				printf("cannot parse antenna switch profile, err %x\n", err);
+				goto broken_extant;
+			}
+			id = nla_get_u32(tb_easp[NL80211_EASP_ATTR_ID]);
+			if ( id == current_profile )
+				printf("\t\t (*)");
+			else
+				printf("\t\t ( )");
+			printf(" %u\t%s\t(%s)", id, nla_get_string(tb_easp[NL80211_EASP_ATTR_NAME]),
+				nla_get_string(tb_easp[NL80211_EASP_ATTR_DESC]));
+			printf("\n");
+		}
+broken_extant:
+		;
+	}
+
 	if (tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES]) {
 		printf("\tSupported interface modes:\n");
 		nla_for_each_nested(nl_mode, tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES], rem_mode)

@@ -219,6 +271,9 @@ static int print_phy_handler(struct nl_m
 				have_combinations = true;
 			}
 
+
+
+
 			printf("\t\t * ");
 
 			err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,

@@ -333,3 +333,30 @@ COMMAND(set, antenna, "<bitmap> | all |
 	NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_antenna,
 	"Set a bitmap of allowed antennas to use for TX and RX.\n"
 	"The driver may reject antenna configurations it cannot support.");
+
+static int handle_extant(struct nl80211_state *state,
+			  struct nl_cb *cb,
+			  struct nl_msg *msg,
+			  int argc, char **argv)
+{
+	char *end;
+	__u32 extant;
+
+	if (argc == 1) {
+		extant = strtoul(argv[0], &end, 0);
+		if (*end)
+			return 1;
+	} else
+		return 1;
+
+	NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_EXTANT_SELECT, extant);
+
+	return 0;
+
+ nla_put_failure:
+	return -ENOBUFS;
+}
+COMMAND(set, extant, "<profile>",
+	NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_extant,
+	"Select the external antenna switch configuration profile.\n"
+	"The driver accepts only profiles defined for the hardware.");