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| author | Alexander Aring <alex.aring@gmail.com> | 2014-11-12 03:36:58 +0100 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-11-12 05:10:40 +0100 |
| commit | 9830c62a0b3d57d9d00880989cfe987f581bc03f (patch) | |
| tree | 730650565487cf2a9caefc85154b874b780b9bd1 /net/ieee802154/nl802154.c | |
| parent | 702bf371282f5912fe53f0b247fa2d7df9d7951f (diff) | |
| download | linux-0-day-9830c62a0b3d57d9d00880989cfe987f581bc03f.tar.gz linux-0-day-9830c62a0b3d57d9d00880989cfe987f581bc03f.tar.xz | |
ieee820154: add short_addr setting support
This patch adds support for setting short address via nl802154 framework.
Also added a comment because a 0xffff seems to be valid address that we
don't have a short address. This is a valid setting but we need
more checks in upper layers to don't allow this address as source address.
Also the current netlink interface doesn't allow to set the short_addr
to 0xffff. Same for the 0xfffe short address which describes a not
allocated short address.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/ieee802154/nl802154.c')
| -rw-r--r-- | net/ieee802154/nl802154.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index 88cd1293283ae..2978c1a78017b 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -593,6 +593,29 @@ static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info) return rdev_set_pan_id(rdev, wpan_dev, pan_id); } +static int nl802154_set_short_addr(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 short_addr; + + /* 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_SHORT_ADDR]) + return -EINVAL; + + short_addr = nla_get_u16(info->attrs[NL802154_ATTR_SHORT_ADDR]); + + return rdev_set_short_addr(rdev, wpan_dev, short_addr); +} + #define NL802154_FLAG_NEED_WPAN_PHY 0x01 #define NL802154_FLAG_NEED_NETDEV 0x02 #define NL802154_FLAG_NEED_RTNL 0x04 @@ -719,6 +742,14 @@ static const struct genl_ops nl802154_ops[] = { .internal_flags = NL802154_FLAG_NEED_NETDEV | NL802154_FLAG_NEED_RTNL, }, + { + .cmd = NL802154_CMD_SET_SHORT_ADDR, + .doit = nl802154_set_short_addr, + .policy = nl802154_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = NL802154_FLAG_NEED_NETDEV | + NL802154_FLAG_NEED_RTNL, + }, }; /* initialisation/exit functions */ |