iw: Add ibss join parameter for beacon interval

NL80211_ATTR_BEACON_INTERVAL already exists, we just have to use it.

Patch from: kentarou matsuyama <matsuyama@thinktube.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25107 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/iw/patches/501-ibss-bintval.patch

@@ -0,0 +1,57 @@
+iw: Add ibss join parameter for beacon interval
+
+From: Bruno Randolf <br1@einfach.org>
+
+NL80211_ATTR_BEACON_INTERVAL already exists, we just have to use it.
+
+Signed-off-by: Bruno Randolf <br1@einfach.org>
+---
+ ibss.c |   19 ++++++++++++++++---
+ 1 files changed, 16 insertions(+), 3 deletions(-)
+
+diff --git a/ibss.c b/ibss.c
+index ed2c73a..9c9c133 100644
+--- a/ibss.c
++++ b/ibss.c
+@@ -26,6 +26,7 @@ static int join_ibss(struct nl80211_state *state,
+ 	int n_rates = 0;
+ 	char *value = NULL, *sptr = NULL;
+ 	float rate;
++	int bintval;
+ 
+ 	if (argc < 2)
+ 		return 1;
+@@ -57,6 +58,17 @@ static int join_ibss(struct nl80211_state *state,
+ 		}
+ 	}
+ 
++	if (argc > 1 && strcmp(argv[0], "beacon-interval") == 0) {
++		argv++;
++		argc--;
++		bintval = strtoul(argv[0], &end, 10);
++		if (*end != '\0')
++			return 1;
++		NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, bintval);
++		argv++;
++		argc--;
++	}
++
+ 	/* basic rates */
+ 	if (argc > 1 && strcmp(argv[0], "basic-rates") == 0) {
+ 		argv++;
+@@ -122,11 +134,12 @@ COMMAND(ibss, leave, NULL,
+ 	NL80211_CMD_LEAVE_IBSS, 0, CIB_NETDEV, leave_ibss,
+ 	"Leave the current IBSS cell.");
+ COMMAND(ibss, join,
+-	"<SSID> <freq in MHz> [fixed-freq] [<fixed bssid>] "
+-	"[basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] [key d:0:abcde]",
++	"<SSID> <freq in MHz> [fixed-freq] [<fixed bssid>] [beacon-interval "
++	"<TU>] [basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] [key d:0:abcde]",
+ 	NL80211_CMD_JOIN_IBSS, 0, CIB_NETDEV, join_ibss,
+ 	"Join the IBSS cell with the given SSID, if it doesn't exist create\n"
+ 	"it on the given frequency. When fixed frequency is requested, don't\n"
+ 	"join/create a cell on a different frequency. When a fixed BSSID is\n"
+ 	"requested use that BSSID and do not adopt another cell's BSSID even\n"
+-	"if it has higher TSF and the same SSID.");
++	"if it has higher TSF and the same SSID. If an IBSS is created, create\n"
++	"it with the specified basic-rates and beacon-interval (in TU).");