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ieee802154: move validation check out of softmac

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This patch moves the value validation out of softmac layer. We need
to be sure now that this value is accepted by the transceiver/mac802154 or
"possible" hardmac drivers before calling rdev-ops.

Signed-off-by: Alexander Aring <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
This commit is contained in:
Alexander Aring 2015-05-17 21:44:38 +02:00 • committed by Marcel Holtmann
commit 673692faf3
2 changed files with 27 additions and 30 deletions
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28
net/ieee802154/nl802154.c
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@ -625,7 +625,8 @@ static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
/* check 802.15.4 constraints */
if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL)
if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL ||
!(rdev->wpan_phy.channels_supported[page] & BIT(channel)))
return -EINVAL;
return rdev_set_channel(rdev, page, channel);
@ -674,6 +675,16 @@ static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
/* 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 == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST))
return -EINVAL;
return rdev_set_pan_id(rdev, wpan_dev, pan_id);
}
@ -695,6 +706,21 @@ static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
/* TODO
* I am not sure about to check here on broadcast short_addr.
* Broadcast is a valid setting, comment from 802.15.4:
* A value of 0xfffe indicates that the device has
* associated but has not been allocated an address. A
* value of 0xffff indicates that the device does not
* have a short address.
*
* I think we should allow to set these settings but
* don't allow to allow socket communication with it.
*/
if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) ||
short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST))
return -EINVAL;
return rdev_set_short_addr(rdev, wpan_dev, short_addr);
}