diff options
Diffstat (limited to 'net/ieee802154/nl-phy.c')
| -rw-r--r-- | net/ieee802154/nl-phy.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/net/ieee802154/nl-phy.c b/net/ieee802154/nl-phy.c index b7af722eb78..199a2d9d12f 100644 --- a/net/ieee802154/nl-phy.c +++ b/net/ieee802154/nl-phy.c @@ -26,6 +26,9 @@ #include <net/netlink.h> #include <net/genetlink.h> #include <net/wpan-phy.h> +#include <net/af_ieee802154.h> +#include <net/ieee802154_netdev.h> +#include <net/rtnetlink.h> /* for rtnl_{un,}lock */ #include <linux/nl802154.h> #include "ieee802154.h" @@ -164,9 +167,162 @@ static int ieee802154_dump_phy(struct sk_buff *skb, return skb->len; } +static int ieee802154_add_iface(struct sk_buff *skb, + struct genl_info *info) +{ + struct sk_buff *msg; + struct wpan_phy *phy; + const char *name; + const char *devname; + int rc = -ENOBUFS; + struct net_device *dev; + + pr_debug("%s\n", __func__); + + if (!info->attrs[IEEE802154_ATTR_PHY_NAME]) + return -EINVAL; + + name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]); + if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0') + return -EINVAL; /* phy name should be null-terminated */ + + if (info->attrs[IEEE802154_ATTR_DEV_NAME]) { + devname = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]); + if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] + != '\0') + return -EINVAL; /* phy name should be null-terminated */ + } else { + devname = "wpan%d"; + } + + if (strlen(devname) >= IFNAMSIZ) + return -ENAMETOOLONG; + + phy = wpan_phy_find(name); + if (!phy) + return -ENODEV; + + msg = ieee802154_nl_new_reply(info, 0, IEEE802154_ADD_IFACE); + if (!msg) + goto out_dev; + + if (!phy->add_iface) { + rc = -EINVAL; + goto nla_put_failure; + } + + dev = phy->add_iface(phy, devname); + if (IS_ERR(dev)) { + rc = PTR_ERR(dev); + goto nla_put_failure; + } + + NLA_PUT_STRING(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)); + NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name); + + dev_put(dev); + + wpan_phy_put(phy); + + return ieee802154_nl_reply(msg, info); + +nla_put_failure: + nlmsg_free(msg); +out_dev: + wpan_phy_put(phy); + return rc; +} + +static int ieee802154_del_iface(struct sk_buff *skb, + struct genl_info *info) +{ + struct sk_buff *msg; + struct wpan_phy *phy; + const char *name; + int rc; + struct net_device *dev; + + pr_debug("%s\n", __func__); + + if (!info->attrs[IEEE802154_ATTR_DEV_NAME]) + return -EINVAL; + + name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]); + if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0') + return -EINVAL; /* name should be null-terminated */ + + dev = dev_get_by_name(genl_info_net(info), name); + if (!dev) + return -ENODEV; + + phy = ieee802154_mlme_ops(dev)->get_phy(dev); + BUG_ON(!phy); + + rc = -EINVAL; + /* phy name is optional, but should be checked if it's given */ + if (info->attrs[IEEE802154_ATTR_PHY_NAME]) { + struct wpan_phy *phy2; + + const char *pname = + nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]); + if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] + != '\0') + /* name should be null-terminated */ + goto out_dev; + + phy2 = wpan_phy_find(pname); + if (!phy2) + goto out_dev; + + if (phy != phy2) { + wpan_phy_put(phy2); + goto out_dev; + } + } + + rc = -ENOBUFS; + + msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE); + if (!msg) + goto out_dev; + + if (!phy->del_iface) { + rc = -EINVAL; + goto nla_put_failure; + } + + rtnl_lock(); + phy->del_iface(phy, dev); + + /* We don't have device anymore */ + dev_put(dev); + dev = NULL; + + rtnl_unlock(); + + + NLA_PUT_STRING(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)); + NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, name); + + wpan_phy_put(phy); + + return ieee802154_nl_reply(msg, info); + +nla_put_failure: + nlmsg_free(msg); +out_dev: + wpan_phy_put(phy); + if (dev) + dev_put(dev); + + return rc; +} + static struct genl_ops ieee802154_phy_ops[] = { IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy, ieee802154_dump_phy), + IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface), + IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface), }; /* |