From: Ben Greear <greearb@candelatech.com>
Date: Mon, 27 Oct 2014 22:04:46 +0000 (-0700)
Subject: mac80211-hwsim: add frequency attribute to netlink pkts
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4f86ed8f87c07b3e1c1291bbb262c8de7e7f1233;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

mac80211-hwsim: add frequency attribute to netlink pkts

Add frequency attribute when sending to user-space over
netlink socket.  The frequency is currently ignored when
receiving from user-space.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index d109e5050857..f808706d9ee3 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -910,6 +910,9 @@ static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 	if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 		goto nla_put_failure;
 
+	if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
+		goto nla_put_failure;
+
 	/* We get the tx control (rate and retries) info*/
 
 	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
@@ -2463,6 +2466,9 @@ static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
 
 	/* A frame is received from user space */
 	memset(&rx_status, 0, sizeof(rx_status));
+	/* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
+	 * packets?
+	 */
 	rx_status.freq = data2->channel->center_freq;
 	rx_status.band = data2->channel->band;
 	rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
diff --git a/drivers/net/wireless/mac80211_hwsim.h b/drivers/net/wireless/mac80211_hwsim.h
index 448e64b619cb..f08debdd639b 100644
--- a/drivers/net/wireless/mac80211_hwsim.h
+++ b/drivers/net/wireless/mac80211_hwsim.h
@@ -60,7 +60,7 @@ enum hwsim_tx_control_flags {
  * space, uses:
  *	%HWSIM_ATTR_ADDR_TRANSMITTER, %HWSIM_ATTR_ADDR_RECEIVER,
  *	%HWSIM_ATTR_FRAME, %HWSIM_ATTR_FLAGS, %HWSIM_ATTR_RX_RATE,
- *	%HWSIM_ATTR_SIGNAL, %HWSIM_ATTR_COOKIE
+ *	%HWSIM_ATTR_SIGNAL, %HWSIM_ATTR_COOKIE, %HWSIM_ATTR_FREQ (optional)
  * @HWSIM_CMD_TX_INFO_FRAME: Transmission info report from user space to
  * kernel, uses:
  *	%HWSIM_ATTR_ADDR_TRANSMITTER, %HWSIM_ATTR_FLAGS,
@@ -119,6 +119,7 @@ enum {
  *	command to force radio removal when process that created the radio dies
  * @HWSIM_ATTR_RADIO_NAME: Name of radio, e.g. phy666
  * @HWSIM_ATTR_NO_VIF:  Do not create vif (wlanX) when creating radio.
+ * @HWSIM_ATTR_FREQ: Frequency at which packet is transmitted or received.
  * @__HWSIM_ATTR_MAX: enum limit
  */
 
@@ -143,6 +144,7 @@ enum {
 	HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE,
 	HWSIM_ATTR_RADIO_NAME,
 	HWSIM_ATTR_NO_VIF,
+	HWSIM_ATTR_FREQ,
 	__HWSIM_ATTR_MAX,
 };
 #define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1)