diff options
author | Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> | 2014-02-17 10:34:11 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2014-02-17 21:42:38 (GMT) |
commit | ba08fea53a43e02b590d89224afdad976dece841 (patch) | |
tree | b7cfcfcfc9b923360c477e55df12a501eda169b0 /net | |
parent | 84dda3c648fd55898064d76366b14f964cdc9d16 (diff) | |
download | linux-ba08fea53a43e02b590d89224afdad976dece841.tar.xz |
ieee802154: add support for CCA mode in wpan phys
The standard describes four modes of clear channel assesment: "energy
above threshold", "carrier found", and the logical and/or of these two.
Support for CCA mode setting is included in the at86rf230 driver,
predicated for RF212 chips.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r-- | net/ieee802154/nl-phy.c | 32 | ||||
-rw-r--r-- | net/ieee802154/nl_policy.c | 1 | ||||
-rw-r--r-- | net/mac802154/ieee802154_dev.c | 11 |
3 files changed, 41 insertions, 3 deletions
diff --git a/net/ieee802154/nl-phy.c b/net/ieee802154/nl-phy.c index f029310..36f58d6 100644 --- a/net/ieee802154/nl-phy.c +++ b/net/ieee802154/nl-phy.c @@ -57,7 +57,8 @@ static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid, nla_put_u8(msg, IEEE802154_ATTR_PAGE, phy->current_page) || nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel) || nla_put_s8(msg, IEEE802154_ATTR_TXPOWER, phy->transmit_power) || - nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, phy->lbt)) + nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, phy->lbt) || + nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE, phy->cca_mode)) goto nla_put_failure; for (i = 0; i < 32; i++) { if (phy->channels_supported[i]) @@ -385,6 +386,23 @@ static int phy_set_lbt(struct wpan_phy *phy, struct genl_info *info) return 0; } +static int phy_set_cca_mode(struct wpan_phy *phy, struct genl_info *info) +{ + u8 mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]); + int rc; + + if (mode > 3) + return -EINVAL; + + rc = phy->set_cca_mode(phy, mode); + if (rc < 0) + return rc; + + phy->cca_mode = mode; + + return 0; +} + int ieee802154_set_phyparams(struct sk_buff *skb, struct genl_info *info) { struct wpan_phy *phy; @@ -394,7 +412,8 @@ int ieee802154_set_phyparams(struct sk_buff *skb, struct genl_info *info) pr_debug("%s\n", __func__); if (!info->attrs[IEEE802154_ATTR_PHY_NAME] && - !info->attrs[IEEE802154_ATTR_LBT_ENABLED]) + !info->attrs[IEEE802154_ATTR_LBT_ENABLED] && + !info->attrs[IEEE802154_ATTR_CCA_MODE]) return -EINVAL; name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]); @@ -406,7 +425,8 @@ int ieee802154_set_phyparams(struct sk_buff *skb, struct genl_info *info) return -ENODEV; if ((!phy->set_txpower && info->attrs[IEEE802154_ATTR_TXPOWER]) || - (!phy->set_lbt && info->attrs[IEEE802154_ATTR_LBT_ENABLED])) + (!phy->set_lbt && info->attrs[IEEE802154_ATTR_LBT_ENABLED]) || + (!phy->set_cca_mode && info->attrs[IEEE802154_ATTR_CCA_MODE])) goto out; mutex_lock(&phy->pib_lock); @@ -423,6 +443,12 @@ int ieee802154_set_phyparams(struct sk_buff *skb, struct genl_info *info) goto error; } + if (info->attrs[IEEE802154_ATTR_CCA_MODE]) { + rc = phy_set_cca_mode(phy, info); + if (rc < 0) + goto error; + } + mutex_unlock(&phy->pib_lock); wpan_phy_put(phy); diff --git a/net/ieee802154/nl_policy.c b/net/ieee802154/nl_policy.c index a09f642..d87c2c9 100644 --- a/net/ieee802154/nl_policy.c +++ b/net/ieee802154/nl_policy.c @@ -55,5 +55,6 @@ const struct nla_policy ieee802154_policy[IEEE802154_ATTR_MAX + 1] = { [IEEE802154_ATTR_TXPOWER] = { .type = NLA_S8, }, [IEEE802154_ATTR_LBT_ENABLED] = { .type = NLA_U8, }, + [IEEE802154_ATTR_CCA_MODE] = { .type = NLA_U8, }, }; diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c index 56338c8..4965e4c 100644 --- a/net/mac802154/ieee802154_dev.c +++ b/net/mac802154/ieee802154_dev.c @@ -185,6 +185,16 @@ static int mac802154_set_lbt(struct wpan_phy *phy, bool on) return priv->ops->set_lbt(&priv->hw, on); } +static int mac802154_set_cca_mode(struct wpan_phy *phy, u8 mode) +{ + struct mac802154_priv *priv = wpan_phy_priv(phy); + + if (!priv->ops->set_cca_mode) + return -ENOTSUPP; + + return priv->ops->set_cca_mode(&priv->hw, mode); +} + struct ieee802154_dev * ieee802154_alloc_device(size_t priv_data_len, struct ieee802154_ops *ops) { @@ -264,6 +274,7 @@ int ieee802154_register_device(struct ieee802154_dev *dev) priv->phy->del_iface = mac802154_del_iface; priv->phy->set_txpower = mac802154_set_txpower; priv->phy->set_lbt = mac802154_set_lbt; + priv->phy->set_cca_mode = mac802154_set_cca_mode; rc = wpan_phy_register(priv->phy); if (rc < 0) |