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[2/2] cfg80211: add the NL80211_CMD_SET_MCAST_RATE command

Message ID 1350312541-17657-2-git-send-email-ordex@autistici.org (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Antonio Quartulli Oct. 15, 2012, 2:49 p.m. UTC 
this command triggers the set_mcast_rate() callback, so enabling the user to
change the rate used to send multicast frames for vif configured as IBSS or
MESH_POINT

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
 include/linux/nl80211.h |  5 +++++
 net/wireless/nl80211.c  | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)
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Patch

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 0e6277a..9440a2d 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -578,6 +578,9 @@ 
  *	station, due to particular reason. %NL80211_ATTR_CONN_FAILED_REASON
  *	is used for this.
  *
+ * @NL80211_CMD_SET_MCAST_RATE: Change the rate used to send multicast frames
+ *	for IBSS or MESH vif.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -726,6 +729,8 @@  enum nl80211_commands {
 
 	NL80211_CMD_CONN_FAILED,
 
+	NL80211_CMD_SET_MCAST_RATE,
+
 	/* add new commands above here */
 
 	/* used to define NL80211_CMD_MAX below */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 38a1a57..f537393 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5435,6 +5435,35 @@  static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
 	return cfg80211_leave_ibss(rdev, dev, false);
 }
 
+static int nl80211_set_mcast_rate(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];
+	int mcast_rate[IEEE80211_NUM_BANDS];
+	u32 nla_rate;
+	int err;
+
+	memset(mcast_rate, 0, sizeof(mcast_rate));
+
+	if (!info->attrs[NL80211_ATTR_MCAST_RATE])
+		return -EINVAL;
+
+	nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
+	if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
+		return -EINVAL;
+
+	mutex_lock(&rdev->devlist_mtx);
+	wdev_lock(dev->ieee80211_ptr);
+
+	err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
+
+	wdev_unlock(dev->ieee80211_ptr);
+	mutex_unlock(&rdev->devlist_mtx);
+
+	return err;
+}
+
+
 #ifdef CONFIG_NL80211_TESTMODE
 static struct genl_multicast_group nl80211_testmode_mcgrp = {
 	.name = "testmode",
@@ -7620,6 +7649,14 @@  static struct genl_ops nl80211_ops[] = {
 		.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
 				  NL80211_FLAG_NEED_RTNL,
 	},
+	{
+		.cmd = NL80211_CMD_SET_MCAST_RATE,
+		.doit = nl80211_set_mcast_rate,
+		.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 = {