diff options
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 90 |
1 files changed, 81 insertions, 9 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index be9f2b5a403f..580ffeaef3d5 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3409,6 +3409,63 @@ static struct net_device *get_vlan(struct genl_info *info, return ERR_PTR(ret); } +static struct nla_policy +nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = { + [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, + [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, +}; + +static int nl80211_set_station_tdls(struct genl_info *info, + struct station_parameters *params) +{ + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct nlattr *tb[NL80211_STA_WME_MAX + 1]; + struct nlattr *nla; + int err; + + /* Can only set if TDLS ... */ + if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) + return -EOPNOTSUPP; + + /* ... with external setup is supported */ + if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) + return -EOPNOTSUPP; + + /* Dummy STA entry gets updated once the peer capabilities are known */ + if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) + params->ht_capa = + nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); + if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) + params->vht_capa = + nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); + + /* parse WME attributes if present */ + if (!info->attrs[NL80211_ATTR_STA_WME]) + return 0; + + nla = info->attrs[NL80211_ATTR_STA_WME]; + err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, + nl80211_sta_wme_policy); + if (err) + return err; + + if (tb[NL80211_STA_WME_UAPSD_QUEUES]) + params->uapsd_queues = nla_get_u8( + tb[NL80211_STA_WME_UAPSD_QUEUES]); + if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) + return -EINVAL; + + if (tb[NL80211_STA_WME_MAX_SP]) + params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); + + if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) + return -EINVAL; + + params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; + + return 0; +} + static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev = info->user_ptr[0]; @@ -3450,8 +3507,7 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); } - if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL] || - info->attrs[NL80211_ATTR_HT_CAPABILITY]) + if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) return -EINVAL; if (!rdev->ops->change_station) @@ -3524,6 +3580,9 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) return -EINVAL; if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) return -EINVAL; + if (info->attrs[NL80211_ATTR_HT_CAPABILITY] || + info->attrs[NL80211_ATTR_VHT_CAPABILITY]) + return -EINVAL; /* must be last in here for error handling */ params.vlan = get_vlan(info, rdev); @@ -3539,13 +3598,29 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) * to change the flag. */ params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); - /* fall through */ + /* Include parameters for TDLS peer (driver will check) */ + err = nl80211_set_station_tdls(info, ¶ms); + if (err) + return err; + /* disallow things sta doesn't support */ + if (params.plink_action) + return -EINVAL; + if (params.local_pm) + 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))) + return -EINVAL; + break; case NL80211_IFTYPE_ADHOC: /* disallow things sta doesn't support */ if (params.plink_action) return -EINVAL; if (params.local_pm) return -EINVAL; + if (info->attrs[NL80211_ATTR_HT_CAPABILITY] || + info->attrs[NL80211_ATTR_VHT_CAPABILITY]) + return -EINVAL; /* reject any changes other than AUTHORIZED */ if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) return -EINVAL; @@ -3560,6 +3635,9 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) return -EINVAL; if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) return -EINVAL; + if (info->attrs[NL80211_ATTR_HT_CAPABILITY] || + info->attrs[NL80211_ATTR_VHT_CAPABILITY]) + return -EINVAL; /* * No special handling for TDLS here -- the userspace * mesh code doesn't have this bug. @@ -3584,12 +3662,6 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) return err; } -static struct nla_policy -nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = { - [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, - [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, -}; - static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev = info->user_ptr[0]; |