aboutsummaryrefslogtreecommitdiffstats
path: root/net/ieee802154
diff options
context:
space:
mode:
authorAlexander Aring <alex.aring@gmail.com>2014-11-12 03:36:59 +0100
committerMarcel Holtmann <marcel@holtmann.org>2014-11-12 05:10:40 +0100
commit656a999e8701c1e3d17040f051d3a080ec6c710c (patch)
treea20af2f92a05c2ab17410be17c3b563fd6f72afb /net/ieee802154
parent9830c62a0b3d57d9d00880989cfe987f581bc03f (diff)
ieee820154: add backoff exponent setting support
This patch adds support for setting backoff exponents via nl802154 framework. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/ieee802154')
-rw-r--r--net/ieee802154/nl802154.c34
-rw-r--r--net/ieee802154/rdev-ops.h9
2 files changed, 43 insertions, 0 deletions
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 2978c1a78017..d1cf3021ff36 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -616,6 +616,32 @@ static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
return rdev_set_short_addr(rdev, wpan_dev, short_addr);
}
+static int
+nl802154_set_backoff_exponent(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;
+ u8 min_be, max_be;
+
+ /* should be set on netif open inside phy settings */
+ if (netif_running(dev))
+ return -EBUSY;
+
+ if (!info->attrs[NL802154_ATTR_MIN_BE] ||
+ !info->attrs[NL802154_ATTR_MAX_BE])
+ return -EINVAL;
+
+ min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]);
+ max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
+
+ /* check 802.15.4 constraints */
+ if (max_be < 3 || max_be > 8 || min_be > max_be)
+ return -EINVAL;
+
+ return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
+}
+
#define NL802154_FLAG_NEED_WPAN_PHY 0x01
#define NL802154_FLAG_NEED_NETDEV 0x02
#define NL802154_FLAG_NEED_RTNL 0x04
@@ -750,6 +776,14 @@ static const struct genl_ops nl802154_ops[] = {
.internal_flags = NL802154_FLAG_NEED_NETDEV |
NL802154_FLAG_NEED_RTNL,
},
+ {
+ .cmd = NL802154_CMD_SET_BACKOFF_EXPONENT,
+ .doit = nl802154_set_backoff_exponent,
+ .policy = nl802154_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL802154_FLAG_NEED_NETDEV |
+ NL802154_FLAG_NEED_RTNL,
+ },
};
/* initialisation/exit functions */
diff --git a/net/ieee802154/rdev-ops.h b/net/ieee802154/rdev-ops.h
index 16b0de06c3af..dbccfa9383fd 100644
--- a/net/ieee802154/rdev-ops.h
+++ b/net/ieee802154/rdev-ops.h
@@ -41,4 +41,13 @@ rdev_set_short_addr(struct cfg802154_registered_device *rdev,
return rdev->ops->set_short_addr(&rdev->wpan_phy, wpan_dev, short_addr);
}
+static inline int
+rdev_set_backoff_exponent(struct cfg802154_registered_device *rdev,
+ struct wpan_dev *wpan_dev, const u8 min_be,
+ const u8 max_be)
+{
+ return rdev->ops->set_backoff_exponent(&rdev->wpan_phy, wpan_dev,
+ min_be, max_be);
+}
+
#endif /* __CFG802154_RDEV_OPS */

Privacy Policy