iw: add patch for setting coverage class / distance

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19140 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 248 insertions, 0 deletions

diff --git a/package/iw/patches/001-sync_nl80211_h.patch b/package/iw/patches/001-sync_nl80211_h.patch
new file mode 100644
index 000000000..fecb35d25
--- /dev/null
+++ b/package/iw/patches/001-sync_nl80211_h.patch
@@ -0,0 +1,167 @@
+--- a/nl80211.h
++++ b/nl80211.h
+@@ -270,6 +270,35 @@
+  * @NL80211_CMD_SET_WIPHY_NETNS: Set a wiphy's netns. Note that all devices
+  *	associated with this wiphy must be down and will follow.
+  *
++ * @NL80211_CMD_REMAIN_ON_CHANNEL: Request to remain awake on the specified
++ *	channel for the specified amount of time. This can be used to do
++ *	off-channel operations like transmit a Public Action frame and wait for
++ *	a response while being associated to an AP on another channel.
++ *	%NL80211_ATTR_WIPHY or %NL80211_ATTR_IFINDEX is used to specify which
++ *	radio is used. %NL80211_ATTR_WIPHY_FREQ is used to specify the
++ *	frequency for the operation and %NL80211_ATTR_WIPHY_CHANNEL_TYPE may be
++ *	optionally used to specify additional channel parameters.
++ *	%NL80211_ATTR_DURATION is used to specify the duration in milliseconds
++ *	to remain on the channel. This command is also used as an event to
++ *	notify when the requested duration starts (it may take a while for the
++ *	driver to schedule this time due to other concurrent needs for the
++ *	radio).
++ *	When called, this operation returns a cookie (%NL80211_ATTR_COOKIE)
++ *	that will be included with any events pertaining to this request;
++ *	the cookie is also used to cancel the request.
++ * @NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: This command can be used to cancel a
++ *	pending remain-on-channel duration if the desired operation has been
++ *	completed prior to expiration of the originally requested duration.
++ *	%NL80211_ATTR_WIPHY or %NL80211_ATTR_IFINDEX is used to specify the
++ *	radio. The %NL80211_ATTR_COOKIE attribute must be given as well to
++ *	uniquely identify the request.
++ *	This command is also used as an event to notify when a requested
++ *	remain-on-channel duration has expired.
++ *
++ * @NL80211_CMD_SET_TX_BITRATE_MASK: Set the mask of rates to be used in TX
++ *	rate selection. %NL80211_ATTR_IFINDEX is used to specify the interface
++ *	and @NL80211_ATTR_TX_RATES the set of allowed rates.
++ *
+  * @NL80211_CMD_MAX: highest used command number
+  * @__NL80211_CMD_AFTER_LAST: internal use
+  */
+@@ -349,6 +378,15 @@ enum nl80211_commands {
+ 	NL80211_CMD_GET_SURVEY,
+ 	NL80211_CMD_NEW_SURVEY_RESULTS,
+ 
++	NL80211_CMD_SET_PMKSA,
++	NL80211_CMD_DEL_PMKSA,
++	NL80211_CMD_FLUSH_PMKSA,
++
++	NL80211_CMD_REMAIN_ON_CHANNEL,
++	NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
++
++	NL80211_CMD_SET_TX_BITRATE_MASK,
++
+ 	/* add new commands above here */
+ 
+ 	/* used to define NL80211_CMD_MAX below */
+@@ -398,6 +436,8 @@ enum nl80211_commands {
+  * @NL80211_ATTR_WIPHY_RTS_THRESHOLD: RTS threshold (TX frames with length
+  *	larger than or equal to this use RTS/CTS handshake); allowed range:
+  *	0..65536, disable with (u32)-1; dot11RTSThreshold; u32
++ * @NL80211_ATTR_WIPHY_COVERAGE_CLASS: Coverage Class as defined by IEEE 802.11
++ *	section 7.3.2.9; dot11CoverageClass; u8
+  *
+  * @NL80211_ATTR_IFINDEX: network interface index of the device to operate on
+  * @NL80211_ATTR_IFNAME: network interface name
+@@ -598,6 +638,21 @@ enum nl80211_commands {
+  *      the survey response for %NL80211_CMD_GET_SURVEY, nested attribute
+  *      containing info as possible, see &enum survey_info.
+  *
++ * @NL80211_ATTR_PMKID: PMK material for PMKSA caching.
++ * @NL80211_ATTR_MAX_NUM_PMKIDS: maximum number of PMKIDs a firmware can
++ *	cache, a wiphy attribute.
++ *
++ * @NL80211_ATTR_DURATION: Duration of an operation in milliseconds, u32.
++ *
++ * @NL80211_ATTR_COOKIE: Generic 64-bit cookie to identify objects.
++ *
++ * @NL80211_ATTR_TX_RATES: Nested set of attributes
++ *	(enum nl80211_tx_rate_attributes) describing TX rates per band. The
++ *	enum nl80211_band value is used as the index (nla_type() of the nested
++ *	data. If a band is not included, it will be configured to allow all
++ *	rates based on negotiated supported rates information. This attribute
++ *	is used with %NL80211_CMD_SET_TX_BITRATE_MASK.
++ *
+  * @NL80211_ATTR_MAX: highest attribute number currently defined
+  * @__NL80211_ATTR_AFTER_LAST: internal use
+  */
+@@ -732,6 +787,17 @@ enum nl80211_attrs {
+ 
+ 	NL80211_ATTR_SURVEY_INFO,
+ 
++	NL80211_ATTR_PMKID,
++	NL80211_ATTR_MAX_NUM_PMKIDS,
++
++	NL80211_ATTR_DURATION,
++
++	NL80211_ATTR_COOKIE,
++
++	NL80211_ATTR_WIPHY_COVERAGE_CLASS,
++
++	NL80211_ATTR_TX_RATES,
++
+ 	/* add attributes here, update the policy in nl80211.c */
+ 
+ 	__NL80211_ATTR_AFTER_LAST,
+@@ -1312,13 +1378,20 @@ enum nl80211_channel_type {
+  * @NL80211_BSS_BEACON_INTERVAL: beacon interval of the (I)BSS (u16)
+  * @NL80211_BSS_CAPABILITY: capability field (CPU order, u16)
+  * @NL80211_BSS_INFORMATION_ELEMENTS: binary attribute containing the
+- *	raw information elements from the probe response/beacon (bin)
++ *	raw information elements from the probe response/beacon (bin);
++ *	if the %NL80211_BSS_BEACON_IES attribute is present, the IEs here are
++ *	from a Probe Response frame; otherwise they are from a Beacon frame.
++ *	However, if the driver does not indicate the source of the IEs, these
++ *	IEs may be from either frame subtype.
+  * @NL80211_BSS_SIGNAL_MBM: signal strength of probe response/beacon
+  *	in mBm (100 * dBm) (s32)
+  * @NL80211_BSS_SIGNAL_UNSPEC: signal strength of the probe response/beacon
+  *	in unspecified units, scaled to 0..100 (u8)
+  * @NL80211_BSS_STATUS: status, if this BSS is "used"
+  * @NL80211_BSS_SEEN_MS_AGO: age of this BSS entry in ms
++ * @NL80211_BSS_BEACON_IES: binary attribute containing the raw information
++ *	elements from a Beacon frame (bin); not present if no Beacon frame has
++ *	yet been received
+  * @__NL80211_BSS_AFTER_LAST: internal
+  * @NL80211_BSS_MAX: highest BSS attribute
+  */
+@@ -1334,6 +1407,7 @@ enum nl80211_bss {
+ 	NL80211_BSS_SIGNAL_UNSPEC,
+ 	NL80211_BSS_STATUS,
+ 	NL80211_BSS_SEEN_MS_AGO,
++	NL80211_BSS_BEACON_IES,
+ 
+ 	/* keep last */
+ 	__NL80211_BSS_AFTER_LAST,
+@@ -1431,4 +1505,33 @@ enum nl80211_key_attributes {
+ 	NL80211_KEY_MAX = __NL80211_KEY_AFTER_LAST - 1
+ };
+ 
++/**
++ * enum nl80211_tx_rate_attributes - TX rate set attributes
++ * @__NL80211_TXRATE_INVALID: invalid
++ * @NL80211_TXRATE_LEGACY: Legacy (non-MCS) rates allowed for TX rate selection
++ *	in an array of rates as defined in IEEE 802.11 7.3.2.2 (u8 values with
++ *	1 = 500 kbps) but without the IE length restriction (at most
++ *	%NL80211_MAX_SUPP_RATES in a single array).
++ * @__NL80211_TXRATE_AFTER_LAST: internal
++ * @NL80211_TXRATE_MAX: highest TX rate attribute
++ */
++enum nl80211_tx_rate_attributes {
++	__NL80211_TXRATE_INVALID,
++	NL80211_TXRATE_LEGACY,
++
++	/* keep last */
++	__NL80211_TXRATE_AFTER_LAST,
++	NL80211_TXRATE_MAX = __NL80211_TXRATE_AFTER_LAST - 1
++};
++
++/**
++ * enum nl80211_band - Frequency band
++ * @NL80211_BAND_2GHZ - 2.4 GHz ISM band
++ * @NL80211_BAND_5GHZ - around 5 GHz band (4.9 - 5.7 GHz)
++ */
++enum nl80211_band {
++	NL80211_BAND_2GHZ,
++	NL80211_BAND_5GHZ,
++};
++
+ #endif /* __LINUX_NL80211_H */
diff --git a/package/iw/patches/100-coverage_class.patch b/package/iw/patches/100-coverage_class.patch
new file mode 100644
index 000000000..8e18e038d
--- /dev/null
+++ b/package/iw/patches/100-coverage_class.patch
@@ -0,0 +1,81 @@
+--- a/info.c
++++ b/info.c
+@@ -156,6 +156,14 @@ static int print_phy_handler(struct nl_m
+ 			printf("\tRTS threshold: %d\n", rts);
+ 	}
+ 
++	if (tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
++		unsigned char coverage;
++
++		coverage = nla_get_u8(tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
++		/* See handle_distance() for an explanation where the '450' comes from */
++		printf("\tCoverage class: %d (up to %dm)\n", coverage, 450 * coverage);
++	}
++
+ 	if (!tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES])
+ 		goto commands;
+ 
+--- a/phy.c
++++ b/phy.c
+@@ -164,3 +164,61 @@ static int handle_netns(struct nl80211_s
+ COMMAND(set, netns, "<pid>",
+ 	NL80211_CMD_SET_WIPHY_NETNS, 0, CIB_PHY, handle_netns,
+ 	"Put this wireless device into a different network namespace");
++
++static int handle_coverage(struct nl80211_state *state,
++			struct nl_cb *cb,
++			struct nl_msg *msg,
++			int argc, char **argv)
++{
++	unsigned int coverage;
++
++	if (argc != 1)
++		return 1;
++
++	coverage = strtoul(argv[0], NULL, 10);
++	if (coverage > 255)
++		return 1;
++	
++	NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, coverage);
++
++	return 0;
++ nla_put_failure:
++	return -ENOBUFS;
++}
++COMMAND(set, coverage, "<coverage class>",
++	NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_coverage,
++	"Set coverage class (1 for every 3 usec of air propagation time).\n"
++	"Valid values: 0 - 255.");
++
++static int handle_distance(struct nl80211_state *state,
++			struct nl_cb *cb,
++			struct nl_msg *msg,
++			int argc, char **argv)
++{
++	unsigned int distance, coverage;
++
++	if (argc != 1)
++		return 1;
++
++	distance = strtoul(argv[0], NULL, 10);
++	
++	/*
++	 * Divide double the distance by the speed of light in m/usec (300) to
++	 * get round-trip time in microseconds and then divide the result by
++	 * three to get coverage class as specified in IEEE 802.11-2007 table
++	 * 7-27. Values are rounded upwards.
++	 */
++	coverage = (distance + 449) / 450;
++	if (coverage > 255)
++		return 1;
++	
++	NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, coverage);
++
++	return 0;
++ nla_put_failure:
++	return -ENOBUFS;
++}
++COMMAND(set, distance, "<distance>",
++	NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_distance,
++	"Set appropriate coverage class for given link distance in meters.\n"
++	"Valid values: 0 - 114750");