nl802154: add support to set cca ed level

This patch adds support for setting the current cca ed level value over
nl802154.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h
index 2e3bb01..290a9a6 100644 (file)
--- a/include/net/cfg802154.h
+++ b/include/net/cfg802154.h
@@ -44,6 +44,7 @@ struct cfg802154_ops {
        int     (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel);
        int     (*set_cca_mode)(struct wpan_phy *wpan_phy,
                                const struct wpan_phy_cca *cca);
+       int     (*set_cca_ed_level)(struct wpan_phy *wpan_phy, s32 ed_level);
        int     (*set_tx_power)(struct wpan_phy *wpan_phy, s32 power);
        int     (*set_pan_id)(struct wpan_phy *wpan_phy,
                              struct wpan_dev *wpan_dev, __le16 pan_id);

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index a89d9d0..7dbb1f4 100644 (file)
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -790,6 +790,28 @@ static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
        return rdev_set_cca_mode(rdev, &cca);
 }
 
+static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info)
+{
+       struct cfg802154_registered_device *rdev = info->user_ptr[0];
+       s32 ed_level;
+       int i;
+
+       if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL))
+               return -EOPNOTSUPP;
+
+       if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL])
+               return -EINVAL;
+
+       ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]);
+
+       for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) {
+               if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i])
+                       return rdev_set_cca_ed_level(rdev, ed_level);
+       }
+
+       return -EINVAL;
+}
+
 static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
 {
        struct cfg802154_registered_device *rdev = info->user_ptr[0];
@@ -1123,6 +1145,14 @@ static const struct genl_ops nl802154_ops[] = {
                                  NL802154_FLAG_NEED_RTNL,
        },
        {
+               .cmd = NL802154_CMD_SET_CCA_ED_LEVEL,
+               .doit = nl802154_set_cca_ed_level,
+               .policy = nl802154_policy,
+               .flags = GENL_ADMIN_PERM,
+               .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
+                                 NL802154_FLAG_NEED_RTNL,
+       },
+       {
                .cmd = NL802154_CMD_SET_TX_POWER,
                .doit = nl802154_set_tx_power,
                .policy = nl802154_policy,

diff --git a/net/ieee802154/rdev-ops.h b/net/ieee802154/rdev-ops.h
index 3645611..b2155a1 100644 (file)
--- a/net/ieee802154/rdev-ops.h
+++ b/net/ieee802154/rdev-ops.h
@@ -75,6 +75,17 @@ rdev_set_cca_mode(struct cfg802154_registered_device *rdev,
 }
 
 static inline int
+rdev_set_cca_ed_level(struct cfg802154_registered_device *rdev, s32 ed_level)
+{
+       int ret;
+
+       trace_802154_rdev_set_cca_ed_level(&rdev->wpan_phy, ed_level);
+       ret = rdev->ops->set_cca_ed_level(&rdev->wpan_phy, ed_level);
+       trace_802154_rdev_return_int(&rdev->wpan_phy, ret);
+       return ret;
+}
+
+static inline int
 rdev_set_tx_power(struct cfg802154_registered_device *rdev,
                  s32 power)
 {

diff --git a/net/ieee802154/trace.h b/net/ieee802154/trace.h
index ac790bb..73eb760 100644 (file)
--- a/net/ieee802154/trace.h
+++ b/net/ieee802154/trace.h
@@ -123,6 +123,21 @@ TRACE_EVENT(802154_rdev_set_cca_mode,
                  WPAN_CCA_PR_ARG)
 );
 
+TRACE_EVENT(802154_rdev_set_cca_ed_level,
+       TP_PROTO(struct wpan_phy *wpan_phy, s32 ed_level),
+       TP_ARGS(wpan_phy, ed_level),
+       TP_STRUCT__entry(
+               WPAN_PHY_ENTRY
+               __field(s32, ed_level)
+       ),
+       TP_fast_assign(
+               WPAN_PHY_ASSIGN;
+               __entry->ed_level = ed_level;
+       ),
+       TP_printk(WPAN_PHY_PR_FMT ", ed_level: %d", WPAN_PHY_PR_ARG,
+                 __entry->ed_level)
+);
+
 DECLARE_EVENT_CLASS(802154_le16_template,
        TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
                 __le16 le16arg),

diff --git a/net/mac802154/cfg.c b/net/mac802154/cfg.c
index ab12fa2..317c466 100644 (file)
--- a/net/mac802154/cfg.c
+++ b/net/mac802154/cfg.c
@@ -106,6 +106,24 @@ ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
 }
 
 static int
+ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level)
+{
+       struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+       int ret;
+
+       ASSERT_RTNL();
+
+       if (wpan_phy->cca_ed_level == ed_level)
+               return 0;
+
+       ret = drv_set_cca_ed_level(local, ed_level);
+       if (!ret)
+               wpan_phy->cca_ed_level = ed_level;
+
+       return ret;
+}
+
+static int
 ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power)
 {
        struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
@@ -213,6 +231,7 @@ const struct cfg802154_ops mac802154_config_ops = {
        .del_virtual_intf = ieee802154_del_iface,
        .set_channel = ieee802154_set_channel,
        .set_cca_mode = ieee802154_set_cca_mode,
+       .set_cca_ed_level = ieee802154_set_cca_ed_level,
        .set_tx_power = ieee802154_set_tx_power,
        .set_pan_id = ieee802154_set_pan_id,
        .set_short_addr = ieee802154_set_short_addr,