wireless: Add NoAck per tid support

This patch contains the configuration changes in nl80211/cfg80211.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 97bfebf..1fc0485 100644 (file)
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -538,6 +538,9 @@
  *     OLBC handling in hostapd. Beacons are reported in %NL80211_CMD_FRAME
  *     messages. Note that per PHY only one application may register.
  *
+ * @NL80211_CMD_SET_NOACK_MAP: sets a bitmap for the individual TIDs whether
+ *      No Acknowledgement Policy should be applied.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -675,6 +678,8 @@ enum nl80211_commands {
 
        NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
 
+       NL80211_CMD_SET_NOACK_MAP,
+
        /* add new commands above here */
 
        /* used to define NL80211_CMD_MAX below */
@@ -1185,6 +1190,9 @@ enum nl80211_commands {
  *    abides to when initiating radiation on DFS channels. A country maps
  *    to one DFS region.
  *
+ * @NL80211_ATTR_NOACK_MAP: This u16 bitmap contains the No Ack Policy of
+ *      up to 16 TIDs.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1428,6 +1436,8 @@ enum nl80211_attrs {
        NL80211_ATTR_DISABLE_HT,
        NL80211_ATTR_HT_CAPABILITY_MASK,
 
+       NL80211_ATTR_NOACK_MAP,
+
        /* add attributes here, update the policy in nl80211.c */
 
        __NL80211_ATTR_AFTER_LAST,

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index d5e1891..38ce452 100644 (file)
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1465,6 +1465,8 @@ struct cfg80211_gtk_rekey_data {
  *
  * @probe_client: probe an associated client, must return a cookie that it
  *     later passes to cfg80211_probe_status().
+ *
+ * @set_noack_map: Set the NoAck Map for the TIDs.
  */
 struct cfg80211_ops {
        int     (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -1658,6 +1660,10 @@ struct cfg80211_ops {
        int     (*probe_client)(struct wiphy *wiphy, struct net_device *dev,
                                const u8 *peer, u64 *cookie);
 
+       int     (*set_noack_map)(struct wiphy *wiphy,
+                                 struct net_device *dev,
+                                 u16 noack_map);
+
        struct ieee80211_channel *(*get_channel)(struct wiphy *wiphy);
 };
 

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a1cabde..6026c29 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -204,6 +204,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
        [NL80211_ATTR_HT_CAPABILITY_MASK] = {
                .len = NL80211_HT_CAPABILITY_LEN
        },
+       [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 };
 
 /* policy for the key attributes */
@@ -904,6 +905,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
        if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
                CMD(sched_scan_start, START_SCHED_SCAN);
        CMD(probe_client, PROBE_CLIENT);
+       CMD(set_noack_map, SET_NOACK_MAP);
        if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
                i++;
                NLA_PUT_U32(msg, i, NL80211_CMD_REGISTER_BEACONS);
@@ -1759,6 +1761,23 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
        return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
 }
 
+static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
+{
+       struct cfg80211_registered_device *rdev = info->user_ptr[0];
+       struct net_device *dev = info->user_ptr[1];
+       u16 noack_map;
+
+       if (!info->attrs[NL80211_ATTR_NOACK_MAP])
+               return -EINVAL;
+
+       if (!rdev->ops->set_noack_map)
+               return -EOPNOTSUPP;
+
+       noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
+
+       return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
+}
+
 struct get_key_cookie {
        struct sk_buff *msg;
        int error;
@@ -6604,6 +6623,15 @@ static struct genl_ops nl80211_ops[] = {
                .internal_flags = NL80211_FLAG_NEED_WIPHY |
                                  NL80211_FLAG_NEED_RTNL,
        },
+       {
+               .cmd = NL80211_CMD_SET_NOACK_MAP,
+               .doit = nl80211_set_noack_map,
+               .policy = nl80211_policy,
+               .flags = GENL_ADMIN_PERM,
+               .internal_flags = NL80211_FLAG_NEED_NETDEV |
+                                 NL80211_FLAG_NEED_RTNL,
+       },
+
 };
 
 static struct genl_multicast_group nl80211_mlme_mcgrp = {