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Commit c8937a1d authored by Alexander Aring's avatar Alexander Aring Committed by Marcel Holtmann
Browse files

ieee820154: add lbt setting support 



This patch adds support for setting listen before transmit mode via
nl802154 framework.

Signed-off-by: default avatarAlexander Aring <alex.aring@gmail.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent f426fd03

include/net/cfg802154.h

+2 −0
Original line number Diff line number Diff line
@@ -51,6 +51,8 @@ struct cfg802154_ops { 
	int	(*set_max_frame_retries)(struct wpan_phy *wpan_phy,

					 struct wpan_dev *wpan_dev,

					 s8 max_frame_retries);

	int	(*set_lbt_mode)(struct wpan_phy *wpan_phy,

				struct wpan_dev *wpan_dev, bool mode);

};



struct wpan_phy {

net/ieee802154/nl802154.c

+25 −0
Original line number Diff line number Diff line
@@ -691,6 +691,23 @@ nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info) 
	return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);

}



static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)

{

	struct cfg802154_registered_device *rdev = info->user_ptr[0];

	struct net_device *dev = info->user_ptr[1];

	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;

	bool mode;



	if (netif_running(dev))

		return -EBUSY;



	if (!info->attrs[NL802154_ATTR_LBT_MODE])

		return -EINVAL;



	mode = !!nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);

	return rdev_set_lbt_mode(rdev, wpan_dev, mode);

}



#define NL802154_FLAG_NEED_WPAN_PHY	0x01

#define NL802154_FLAG_NEED_NETDEV	0x02

#define NL802154_FLAG_NEED_RTNL		0x04
@@ -849,6 +866,14 @@ static const struct genl_ops nl802154_ops[] = { 
		.internal_flags = NL802154_FLAG_NEED_NETDEV |

				  NL802154_FLAG_NEED_RTNL,

	},

	{

		.cmd = NL802154_CMD_SET_LBT_MODE,

		.doit = nl802154_set_lbt_mode,

		.policy = nl802154_policy,

		.flags = GENL_ADMIN_PERM,

		.internal_flags = NL802154_FLAG_NEED_NETDEV |

				  NL802154_FLAG_NEED_RTNL,

	},

};



/* initialisation/exit functions */

net/ieee802154/rdev-ops.h

+7 −0
Original line number Diff line number Diff line
@@ -68,4 +68,11 @@ rdev_set_max_frame_retries(struct cfg802154_registered_device *rdev, 
						max_frame_retries);

}



static inline int

rdev_set_lbt_mode(struct cfg802154_registered_device *rdev,

		  struct wpan_dev *wpan_dev, const bool mode)

{

	return rdev->ops->set_lbt_mode(&rdev->wpan_phy, wpan_dev, mode);

}



#endif /* __CFG802154_RDEV_OPS */

net/mac802154/cfg.c

+16 −0
Original line number Diff line number Diff line
@@ -155,6 +155,21 @@ static int ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy, 
	return 0;

}



static int ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy,

				   struct wpan_dev *wpan_dev,

				   const bool mode)

{

	struct ieee802154_local *local = wpan_phy_priv(wpan_phy);



	ASSERT_RTNL();



	if (!(local->hw.flags & IEEE802154_HW_LBT))

		return -EOPNOTSUPP;



	wpan_dev->lbt = mode;

	return 0;

}



const struct cfg802154_ops mac802154_config_ops = {

	.add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,

	.del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
@@ -164,4 +179,5 @@ const struct cfg802154_ops mac802154_config_ops = { 
	.set_backoff_exponent = ieee802154_set_backoff_exponent,

	.set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,

	.set_max_frame_retries = ieee802154_set_max_frame_retries,

	.set_lbt_mode = ieee802154_set_lbt_mode,

};