This patch adds support for deleting a wpan interface via nl802154.
Signed-off-by: Alexander Aring <alex.aring@xxxxxxxxx>
---
include/net/cfg802154.h | 2 ++
net/ieee802154/nl802154.c | 28 ++++++++++++++++++++++++++++
net/ieee802154/rdev-ops.h | 7 +++++++
net/mac802154/cfg.c | 9 +++++++++
net/mac802154/ieee802154_i.h | 6 ++++++
5 files changed, 52 insertions(+)
diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h
index 4a9bb0e..507ac9d 100644
--- a/include/net/cfg802154.h
+++ b/include/net/cfg802154.h
@@ -43,6 +43,8 @@ struct cfg802154_ops {
const char *name,
enum nl802154_iftype type,
__le64 extended_addr);
+ int (*del_virtual_intf)(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev);
int (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel);
int (*set_pan_id)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, u16 pan_id);
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 49c4d8a..6b9bc93 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -583,6 +583,26 @@ static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
type, extended_addr);
}
+static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg802154_registered_device *rdev = info->user_ptr[0];
+ struct wpan_dev *wpan_dev = info->user_ptr[1];
+
+ if (!rdev->ops->del_virtual_intf)
+ return -EOPNOTSUPP;
+
+ /* If we remove a wpan device without a netdev then clear
+ * user_ptr[1] so that nl802154_post_doit won't dereference it
+ * to check if it needs to do dev_put(). Otherwise it crashes
+ * since the wpan_dev has been freed, unlike with a netdev where
+ * we need the dev_put() for the netdev to really be freed.
+ */
+ if (!wpan_dev->netdev)
+ info->user_ptr[1] = NULL;
+
+ return rdev_del_virtual_intf(rdev, wpan_dev);
+}
+
static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
{
struct cfg802154_registered_device *rdev = info->user_ptr[0];
@@ -859,6 +879,14 @@ static const struct genl_ops nl802154_ops[] = {
NL802154_FLAG_NEED_RTNL,
},
{
+ .cmd = NL802154_CMD_DEL_INTERFACE,
+ .doit = nl802154_del_interface,
+ .policy = nl802154_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
+ NL802154_FLAG_NEED_RTNL,
+ },
+ {
.cmd = NL802154_CMD_SET_CHANNEL,
.doit = nl802154_set_channel,
.policy = nl802154_policy,
diff --git a/net/ieee802154/rdev-ops.h b/net/ieee802154/rdev-ops.h
index 06e9754..40ffbc0 100644
--- a/net/ieee802154/rdev-ops.h
+++ b/net/ieee802154/rdev-ops.h
@@ -29,6 +29,13 @@ rdev_add_virtual_intf(struct cfg802154_registered_device *rdev, char *name,
}
static inline int
+rdev_del_virtual_intf(struct cfg802154_registered_device *rdev,
+ struct wpan_dev *wpan_dev)
+{
+ return rdev->ops->del_virtual_intf(&rdev->wpan_phy, wpan_dev);
+}
+
+static inline int
rdev_set_channel(struct cfg802154_registered_device *rdev, u8 page, u8 channel)
{
return rdev->ops->set_channel(&rdev->wpan_phy, page, channel);
diff --git a/net/mac802154/cfg.c b/net/mac802154/cfg.c
index 568d712..7def262 100644
--- a/net/mac802154/cfg.c
+++ b/net/mac802154/cfg.c
@@ -58,6 +58,14 @@ ieee802154_add_iface(struct wpan_phy *phy, const char *name,
}
static int
+ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
+{
+ ieee802154_if_remove(IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev));
+
+ return 0;
+}
+
+static int
ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel)
{
struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
@@ -191,6 +199,7 @@ const struct cfg802154_ops mac802154_config_ops = {
.add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
.del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
.add_virtual_intf = ieee802154_add_iface,
+ .del_virtual_intf = ieee802154_del_iface,
.set_channel = ieee802154_set_channel,
.set_pan_id = ieee802154_set_pan_id,
.set_short_addr = ieee802154_set_short_addr,
diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h
index cc69163..bebd70f 100644
--- a/net/mac802154/ieee802154_i.h
+++ b/net/mac802154/ieee802154_i.h
@@ -115,6 +115,12 @@ IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
return netdev_priv(dev);
}
+static inline struct ieee802154_sub_if_data *
+IEEE802154_WPAN_DEV_TO_SUB_IF(struct wpan_dev *wpan_dev)
+{
+ return container_of(wpan_dev, struct ieee802154_sub_if_data, wpan_dev);
+}
+
static inline bool
ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
{
--
2.1.3
--
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