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authorFelix Fietkau <nbd@openwrt.org>2009-11-10 18:53:10 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-11-11 17:02:07 -0500
commit8b787643ca0a5130c647109d77fe512f89cfa611 (patch)
treeb3b0f74c57843a90f8a3822d37237d637c8dcfd0
parent1460dd158a520447b87661aea4afda1997d69cde (diff)
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nl80211: add a parameter for using 4-address frames on virtual interfaces
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--include/linux/nl80211.h4
-rw-r--r--include/net/cfg80211.h2
-rw-r--r--net/wireless/nl80211.c11
3 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 50afca3..203adef 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -584,6 +584,8 @@ enum nl80211_commands {
* changed then the list changed and the dump should be repeated
* completely from scratch.
*
+ * @NL80211_ATTR_4ADDR: Use 4-address frames on a virtual interface
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -714,6 +716,8 @@ enum nl80211_attrs {
NL80211_ATTR_PID,
+ NL80211_ATTR_4ADDR,
+
/* 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 ff67865..1ee41e4 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -206,10 +206,12 @@ struct ieee80211_supported_band {
* struct vif_params - describes virtual interface parameters
* @mesh_id: mesh ID to use
* @mesh_id_len: length of the mesh ID
+ * @use_4addr: use 4-address frames
*/
struct vif_params {
u8 *mesh_id;
int mesh_id_len;
+ int use_4addr;
};
/**
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 8ed62b6..8c8e4ea 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -138,6 +138,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
[NL80211_ATTR_PID] = { .type = NLA_U32 },
+ [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
};
/* policy for the attributes */
@@ -987,6 +988,13 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
change = true;
}
+ if (info->attrs[NL80211_ATTR_4ADDR]) {
+ params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
+ change = true;
+ } else {
+ params.use_4addr = -1;
+ }
+
if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
if (ntype != NL80211_IFTYPE_MONITOR) {
err = -EINVAL;
@@ -1053,6 +1061,9 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
}
+ if (info->attrs[NL80211_ATTR_4ADDR])
+ params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
+
err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
&flags);