cfg80211: Add support for user configurable beacon data rate

Commit Message

Purushottam Kushwaha July 8, 2016, 10:28 a.m. UTC

This will allow user to configure beacon tx rate from userspace. This adds
new nl80211 attribute as NL80211_ATTR_BEACON_RATE.

Signed-off-by: Purushottam Kushwaha <[e-mail]>
---
 include/net/cfg80211.h       | 3 ++-
 include/uapi/linux/nl80211.h | 5 +++++
 net/wireless/nl80211.c       | 5 +++++
 3 files changed, 12 insertions(+), 1 deletion(-)

Comments

Johannes Berg July 8, 2016, 10:33 a.m. UTC | #1

On Fri, 2016-07-08 at 15:58 +0530, Purushottam Kushwaha wrote:
> 
>   *
> + * @NL80211_ATTR_BEACON_TXRATE: User configurable beacon data rate
> (u32). This is
> + *	used to set beacon tx rate.
> 
It seems this should be nested from enum nl80211_tx_rate_attributes, to
perhaps allow HT/VHT beacons in the future.

johannes
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Patch

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 9c23f4d3..ad0200b 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -685,6 +685,7 @@  struct cfg80211_acl_data {
  * @beacon: beacon data
  * @beacon_interval: beacon interval
  * @dtim_period: DTIM period
+ * @beacon_txrate: beacon tx rate
  * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from
  *	user space)
  * @ssid_len: length of @ssid
@@ -706,7 +707,7 @@  struct cfg80211_ap_settings {
 
 	struct cfg80211_beacon_data beacon;
 
-	int beacon_interval, dtim_period;
+	int beacon_interval, dtim_period, beacon_txrate;
 	const u8 *ssid;
 	size_t ssid_len;
 	enum nl80211_hidden_ssid hidden_ssid;
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 2206941..f338909 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1867,6 +1867,9 @@  enum nl80211_commands {
  * @NL80211_ATTR_MESH_PEER_AID: Association ID for the mesh peer (u16). This is
  *	used to pull the stored data for mesh peer in power save state.
  *
+ * @NL80211_ATTR_BEACON_TXRATE: User configurable beacon data rate (u32). This is
+ *	used to set beacon tx rate.
+ *
  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2261,6 +2264,8 @@  enum nl80211_attrs {
 
 	NL80211_ATTR_MESH_PEER_AID,
 
+	NL80211_ATTR_BEACON_TXRATE,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5782f71..020b753 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -409,6 +409,7 @@  static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 		.len = VHT_MUMIMO_GROUPS_DATA_LEN
 	},
 	[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
+	[NL80211_ATTR_BEACON_TXRATE] = { .type = NLA_U32 },
 };
 
 /* policy for the key attributes */
@@ -3568,6 +3569,10 @@  static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 		params.smps_mode = NL80211_SMPS_OFF;
 	}
 
+	if (info->attrs[NL80211_ATTR_BEACON_TXRATE])
+		params.beacon_txrate =
+			nla_get_u32(info->attrs[NL80211_ATTR_BEACON_TXRATE]);
+
 	if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
 		params.acl = parse_acl_data(&rdev->wiphy, info);
 		if (IS_ERR(params.acl))