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cfg80211: clean up mesh plink station change API

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Make the ability to leave the plink_state unchanged not use a
magic -1 variable that isn't in the enum, but an explicit change
flag; reject invalid plink states or actions and move the needed
constants for plink actions to the right header file. Also
reject plink_state changes for non-mesh interfaces.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2013-02-14 23:27:01 +01:00
parent c0f3a317f2
commit f8bacc2104
4 changed files with 54 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
net/wireless/nl80211.c
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@@ -3412,7 +3412,6 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
memset(&params, 0, sizeof(params));
params.listen_interval = -1;
params.plink_state = -1;
if (info->attrs[NL80211_ATTR_STA_AID])
return -EINVAL;
@@ -3451,13 +3450,20 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
return -EINVAL;
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
params.plink_state =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
if (params.plink_state >= NUM_NL80211_PLINK_STATES)
return -EINVAL;
params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
}
if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
enum nl80211_mesh_power_mode pm = nla_get_u32(
@@ -3479,6 +3485,8 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
if (params.local_pm)
return -EINVAL;
if (params.sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
return -EINVAL;
/* TDLS can't be set, ... */
if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
@@ -3542,6 +3550,8 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
if (params.local_pm)
return -EINVAL;
if (params.sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
return -EINVAL;
/* reject any changes other than AUTHORIZED or WME (for TDLS) */
if (params.sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_WME)))
@@ -3553,6 +3563,8 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
if (params.local_pm)
return -EINVAL;
if (params.sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
return -EINVAL;
if (info->attrs[NL80211_ATTR_HT_CAPABILITY] ||
info->attrs[NL80211_ATTR_VHT_CAPABILITY])
return -EINVAL;
@@ -3652,9 +3664,12 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
params.vht_capa =
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
return -EINVAL;
}
if (!rdev->ops->add_station)
return -EOPNOTSUPP;