commit 0f999b09f5c1b135e840501840dbcd01fad66f79
author Varka Bhadram <varkabhadram@gmail.com> Wed May 27 09:10:54 2015 +0530
committer Marcel Holtmann <marcel@holtmann.org> Wed May 27 13:29:25 2015 +0200
tree 1f632df3dee5995e7a0f4b39b7dc4739b54f5702
parent fc4f80524368dbf3fa2eba639c7b79bb014aea0a

ieee802154: add set transmit power support

This patch adds transmission power setting support for IEEE-802.15.4
devices via nl802154.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/ieee802154/nl802154.c

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 212a795..5c9d524 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -783,6 +783,28 @@
 	return rdev_set_cca_mode(rdev, &cca);
 }
 
+static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg802154_registered_device *rdev = info->user_ptr[0];
+	s32 power;
+	int i;
+
+	if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER))
+		return -EOPNOTSUPP;
+
+	if (!info->attrs[NL802154_ATTR_TX_POWER])
+		return -EINVAL;
+
+	power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]);
+
+	for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) {
+		if (power == rdev->wpan_phy.supported.tx_powers[i])
+			return rdev_set_tx_power(rdev, power);
+	}
+
+	return -EINVAL;
+}
+
 static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
 {
 	struct cfg802154_registered_device *rdev = info->user_ptr[0];
@@ -1094,6 +1116,14 @@
 				  NL802154_FLAG_NEED_RTNL,
 	},
 	{
+		.cmd = NL802154_CMD_SET_TX_POWER,
+		.doit = nl802154_set_tx_power,
+		.policy = nl802154_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
+				  NL802154_FLAG_NEED_RTNL,
+	},
+	{
 		.cmd = NL802154_CMD_SET_PAN_ID,
 		.doit = nl802154_set_pan_id,
 		.policy = nl802154_policy,