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ieee820154: add pan_id setting support 

This patch adds support for setting pan_id via nl802154 framework.
Adding a comment because setting 0xffff as pan_id seems to be valid
setting. The pan_id 0xffff as source pan is invalid. I am not sure now
about this setting but for the current netlink interface this is an
invalid setting, so we do the same now. Maybe we need to change that
when we have coordinator support and association support.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
hifive-unleashed-5.1
Alexander Aring 2014-11-12 03:36:57 +01:00 committed by Marcel Holtmann
parent 820bd66fb2
commit 702bf37128
5 changed files with 62 additions and 0 deletions
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2
include/linux/ieee802154.h
View File

@ -30,6 +30,8 @@
#define IEEE802154_MTU 127
#define IEEE802154_MIN_PSDU_LEN 5
#define IEEE802154_PAN_ID_BROADCAST 0xffff
#define IEEE802154_EXTENDED_ADDR_LEN 8
#define IEEE802154_FC_TYPE_BEACON 0x0 /* Frame is beacon */

2
include/net/cfg802154.h
View File

@ -38,6 +38,8 @@ struct cfg802154_ops {
void (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
struct net_device *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);
};
struct wpan_phy {

31
net/ieee802154/nl802154.c
View File

@ -570,6 +570,29 @@ static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
return rdev_set_channel(rdev, page, channel);
}
static int nl802154_set_pan_id(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;
u16 pan_id;
/* conflict here while tx/rx calls */
if (netif_running(dev))
return -EBUSY;
/* don't change address fields on monitor */
if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
return -EINVAL;
if (!info->attrs[NL802154_ATTR_PAN_ID])
return -EINVAL;
pan_id = nla_get_u16(info->attrs[NL802154_ATTR_PAN_ID]);
return rdev_set_pan_id(rdev, wpan_dev, pan_id);
}
#define NL802154_FLAG_NEED_WPAN_PHY 0x01
#define NL802154_FLAG_NEED_NETDEV 0x02
#define NL802154_FLAG_NEED_RTNL 0x04
@ -688,6 +711,14 @@ static const struct genl_ops nl802154_ops[] = {
.internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
NL802154_FLAG_NEED_RTNL,
},
{
.cmd = NL802154_CMD_SET_PAN_ID,
.doit = nl802154_set_pan_id,
.policy = nl802154_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL802154_FLAG_NEED_NETDEV |
NL802154_FLAG_NEED_RTNL,
},
};
/* initialisation/exit functions */

7
net/ieee802154/rdev-ops.h
View File

@ -27,4 +27,11 @@ rdev_set_channel(struct cfg802154_registered_device *rdev, const u8 page,
return rdev->ops->set_channel(&rdev->wpan_phy, page, channel);
}
static inline int
rdev_set_pan_id(struct cfg802154_registered_device *rdev,
struct wpan_dev *wpan_dev, u16 pan_id)
{
return rdev->ops->set_pan_id(&rdev->wpan_phy, wpan_dev, pan_id);
}
#endif /* __CFG802154_RDEV_OPS */

20
net/mac802154/cfg.c
View File

@ -64,8 +64,28 @@ ieee802154_set_channel(struct wpan_phy *wpan_phy, const u8 page,
return ret;
}
static int ieee802154_set_pan_id(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, const u16 pan_id)
{
ASSERT_RTNL();
/* TODO
* I am not sure about to check here on broadcast pan_id.
* Broadcast is a valid setting, comment from 802.15.4:
* If this value is 0xffff, the device is not associated.
*
* This could useful to simple deassociate an device.
*/
if (pan_id == IEEE802154_PAN_ID_BROADCAST)
return -EINVAL;
wpan_dev->pan_id = cpu_to_le16(pan_id);
return 0;
}
const struct cfg802154_ops mac802154_config_ops = {
.add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
.del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
.set_channel = ieee802154_set_channel,
.set_pan_id = ieee802154_set_pan_id,
};