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authorJohannes Berg <johannes@sipsolutions.net>2007-12-19 02:03:34 +0100
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:59:51 -0800
commit5727ef1b2e797a1922f5bc239b6afb2b4cfb80bc (patch)
tree16fb0c8afcb1c5282fcc45ffa90c8e34b0daa6d4 /net/wireless
parented1b6cc7f80f831e192704b05b9917f9cc37be15 (diff)
downloadlinux-5727ef1b2e797a1922f5bc239b6afb2b4cfb80bc.tar.bz2
cfg80211/nl80211: station handling
This patch adds station handling to cfg80211/nl80211. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 306ae019ea81..431835126e88 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -76,6 +76,12 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
+ [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
+ [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
+ [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
+ [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
+ .len = NL80211_MAX_SUPP_RATES },
+ [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
};
/* message building helper */
@@ -715,6 +721,210 @@ static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
return err;
}
+static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
+ [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
+ [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
+ [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
+};
+
+static int parse_station_flags(struct nlattr *nla, u32 *staflags)
+{
+ struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
+ int flag;
+
+ *staflags = 0;
+
+ if (!nla)
+ return 0;
+
+ if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
+ nla, sta_flags_policy))
+ return -EINVAL;
+
+ *staflags = STATION_FLAG_CHANGED;
+
+ for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
+ if (flags[flag])
+ *staflags |= (1<<flag);
+
+ return 0;
+}
+
+static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
+{
+ return -EOPNOTSUPP;
+}
+
+/*
+ * Get vlan interface making sure it is on the right wiphy.
+ */
+static int get_vlan(struct nlattr *vlanattr,
+ struct cfg80211_registered_device *rdev,
+ struct net_device **vlan)
+{
+ *vlan = NULL;
+
+ if (vlanattr) {
+ *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
+ if (!*vlan)
+ return -ENODEV;
+ if (!(*vlan)->ieee80211_ptr)
+ return -EINVAL;
+ if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct station_parameters params;
+ u8 *mac_addr = NULL;
+
+ memset(&params, 0, sizeof(params));
+
+ params.listen_interval = -1;
+
+ if (info->attrs[NL80211_ATTR_STA_AID])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
+ params.supported_rates =
+ nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+ params.supported_rates_len =
+ nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+ }
+
+ if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
+ params.listen_interval =
+ nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
+
+ if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
+ &params.station_flags))
+ return -EINVAL;
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
+ if (err)
+ goto out;
+
+ if (!drv->ops->change_station) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
+ rtnl_unlock();
+
+ out:
+ if (params.vlan)
+ dev_put(params.vlan);
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ struct station_parameters params;
+ u8 *mac_addr = NULL;
+
+ memset(&params, 0, sizeof(params));
+
+ if (!info->attrs[NL80211_ATTR_MAC])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_STA_AID])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
+ return -EINVAL;
+
+ if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
+ return -EINVAL;
+
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+ params.supported_rates =
+ nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+ params.supported_rates_len =
+ nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
+ params.listen_interval =
+ nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
+ params.listen_interval = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
+
+ if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS],
+ &params.station_flags))
+ return -EINVAL;
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
+ if (err)
+ goto out;
+
+ if (!drv->ops->add_station) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
+ rtnl_unlock();
+
+ out:
+ if (params.vlan)
+ dev_put(params.vlan);
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
+static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *drv;
+ int err;
+ struct net_device *dev;
+ u8 *mac_addr = NULL;
+
+ if (info->attrs[NL80211_ATTR_MAC])
+ mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+ err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
+ if (err)
+ return err;
+
+ if (!drv->ops->del_station) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rtnl_lock();
+ err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
+ rtnl_unlock();
+
+ out:
+ cfg80211_put_dev(drv);
+ dev_put(dev);
+ return err;
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -796,6 +1006,31 @@ static struct genl_ops nl80211_ops[] = {
.flags = GENL_ADMIN_PERM,
.doit = nl80211_del_beacon,
},
+ {
+ .cmd = NL80211_CMD_GET_STATION,
+ .doit = nl80211_get_station,
+ /* TODO: implement dumpit */
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_SET_STATION,
+ .doit = nl80211_set_station,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_NEW_STATION,
+ .doit = nl80211_new_station,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_DEL_STATION,
+ .doit = nl80211_del_station,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
};
/* multicast groups */