diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2023-09-27 20:12:08 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2023-11-20 11:42:47 +0100 |
| commit | 7b18313e84eb62c3e4071f9679480159d8da5107 (patch) | |
| tree | 0599ed0d16542573dd5d59b87498152853fd1b29 /net/ieee802154/nl802154.c | |
| parent | fefd19807fe9c65002366c749e809996a1ca4e68 (diff) | |
ieee802154: Add support for user disassociation requests
A device may decide at some point to disassociate from a PAN, let's
introduce a netlink command for this purpose.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-6-miquel.raynal@bootlin.com
Diffstat (limited to 'net/ieee802154/nl802154.c')
| -rw-r--r-- | net/ieee802154/nl802154.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index e430dbf66d00..dd86ecd7b193 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -1663,6 +1663,39 @@ static int nl802154_associate(struct sk_buff *skb, struct genl_info *info) return err; } +static int nl802154_disassociate(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; + struct wpan_phy *wpan_phy = &rdev->wpan_phy; + struct ieee802154_addr target; + + if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) { + NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams"); + return -EOPNOTSUPP; + } + + target.pan_id = wpan_dev->pan_id; + + if (info->attrs[NL802154_ATTR_EXTENDED_ADDR]) { + target.mode = IEEE802154_ADDR_LONG; + target.extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]); + } else if (info->attrs[NL802154_ATTR_SHORT_ADDR]) { + target.mode = IEEE802154_ADDR_SHORT; + target.short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]); + } else { + NL_SET_ERR_MSG(info->extack, "Device address is missing"); + return -EINVAL; + } + + mutex_lock(&wpan_dev->association_lock); + rdev_disassociate(rdev, wpan_dev, &target); + mutex_unlock(&wpan_dev->association_lock); + + return 0; +} + #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL static const struct nla_policy nl802154_dev_addr_policy[NL802154_DEV_ADDR_ATTR_MAX + 1] = { [NL802154_DEV_ADDR_ATTR_PAN_ID] = { .type = NLA_U16 }, @@ -2792,6 +2825,14 @@ static const struct genl_ops nl802154_ops[] = { NL802154_FLAG_CHECK_NETDEV_UP | NL802154_FLAG_NEED_RTNL, }, + { + .cmd = NL802154_CMD_DISASSOCIATE, + .doit = nl802154_disassociate, + .flags = GENL_ADMIN_PERM, + .internal_flags = NL802154_FLAG_NEED_NETDEV | + NL802154_FLAG_CHECK_NETDEV_UP | + NL802154_FLAG_NEED_RTNL, + }, #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL { .cmd = NL802154_CMD_SET_SEC_PARAMS, |