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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: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2015-05-17 21:44:44 +02:00 committed by Marcel Holtmann
parent fea3318d20
commit 791021bf13
2 changed files with 38 additions and 0 deletions
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12
include/net/cfg802154.h
View File

@ -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;

26
net/mac802154/cfg.c
View File

@ -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;