From 9f1ba9062e032fb7b395cd27fc564754fe4e9867 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Thu, 7 Aug 2008 20:07:01 +0300 Subject: mac80211/cfg80211: Add BSS configuration options for AP mode This change adds a new cfg80211 command, NL80211_CMD_SET_BSS, to allow AP mode BSS parameters to be changed from user space (e.g., hostapd). The drivers using mac80211 are expected to be modified with separate changes to use the new BSS info parameter for short slot time in the bss_info_changed() handler. Signed-off-by: Jouni Malinen Acked-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 59eb2cf42e5f..47542ee01c57 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -87,6 +87,10 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, .len = IEEE80211_MAX_MESH_ID_LEN }, [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, + + [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, + [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, + [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, }; /* message building helper */ @@ -1525,6 +1529,48 @@ static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) return err; } +static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + int err; + struct net_device *dev; + struct bss_parameters params; + + memset(¶ms, 0, sizeof(params)); + /* default to not changing parameters */ + params.use_cts_prot = -1; + params.use_short_preamble = -1; + params.use_short_slot_time = -1; + + if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) + params.use_cts_prot = + nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); + if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) + params.use_short_preamble = + nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); + if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) + params.use_short_slot_time = + nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + return err; + + if (!drv->ops->change_bss) { + err = -EOPNOTSUPP; + goto out; + } + + rtnl_lock(); + err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms); + rtnl_unlock(); + + out: + cfg80211_put_dev(drv); + dev_put(dev); + return err; +} + static struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_GET_WIPHY, @@ -1656,6 +1702,12 @@ static struct genl_ops nl80211_ops[] = { .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, + { + .cmd = NL80211_CMD_SET_BSS, + .doit = nl80211_set_bss, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, }; /* multicast groups */ -- cgit v1.2.3