Commit 791021bf authored by Alexander Aring's avatar Alexander Aring Committed by Marcel Holtmann
Browse files

mac802154: check for really changes 



This patch adds check if the value is really changed inside pib/mib.
If a transceiver do support only one value for e.g. max_be then this
will also handle that the driver layer doesn't need to care about
handling to set one value only.

Signed-off-by: default avatarAlexander Aring <alex.aring@gmail.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent fea3318d

include/net/cfg802154.h

+12 −0
Original line number Diff line number Diff line
@@ -94,6 +94,18 @@ struct wpan_phy_cca { 
	enum nl802154_cca_opts opt;

};



static inline bool

wpan_phy_cca_cmp(const struct wpan_phy_cca *a, const struct wpan_phy_cca *b)

{

	if (a->mode != b->mode)

		return false;



	if (a->mode == NL802154_CCA_ENERGY_CARRIER)

		return a->opt == b->opt;



	return true;

}



struct wpan_phy {

	struct mutex pib_lock;

net/mac802154/cfg.c

+26 −0
Original line number Diff line number Diff line
@@ -73,6 +73,10 @@ ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel) 


	ASSERT_RTNL();



	if (wpan_phy->current_page == page &&

	    wpan_phy->current_channel == channel)

		return 0;



	ret = drv_set_channel(local, page, channel);

	if (!ret) {

		wpan_phy->current_page = page;
@@ -91,6 +95,9 @@ ieee802154_set_cca_mode(struct wpan_phy *wpan_phy, 


	ASSERT_RTNL();



	if (wpan_phy_cca_cmp(&wpan_phy->cca, cca))

		return 0;



	/* check if phy support this setting */

	if (!(local->hw.flags & IEEE802154_HW_CCA_MODE))

		return -EOPNOTSUPP;
@@ -108,6 +115,9 @@ ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 
{

	ASSERT_RTNL();



	if (wpan_dev->pan_id == pan_id)

		return 0;



	wpan_dev->pan_id = pan_id;

	return 0;

}
@@ -121,6 +131,10 @@ ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy, 


	ASSERT_RTNL();



	if (wpan_dev->min_be == min_be &&

	    wpan_dev->max_be == max_be)

		return 0;



	if (!(local->hw.flags & IEEE802154_HW_CSMA_PARAMS))

		return -EOPNOTSUPP;
@@ -135,6 +149,9 @@ ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 
{

	ASSERT_RTNL();



	if (wpan_dev->short_addr == short_addr)

		return 0;



	wpan_dev->short_addr = short_addr;

	return 0;

}
@@ -148,6 +165,9 @@ ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy, 


	ASSERT_RTNL();



	if (wpan_dev->csma_retries == max_csma_backoffs)

		return 0;



	if (!(local->hw.flags & IEEE802154_HW_CSMA_PARAMS))

		return -EOPNOTSUPP;
@@ -164,6 +184,9 @@ ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy, 


	ASSERT_RTNL();



	if (wpan_dev->frame_retries == max_frame_retries)

		return 0;



	if (!(local->hw.flags & IEEE802154_HW_FRAME_RETRIES))

		return -EOPNOTSUPP;
@@ -179,6 +202,9 @@ ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev, 


	ASSERT_RTNL();



	if (wpan_dev->lbt == mode)

		return 0;



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

		return -EOPNOTSUPP;

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