[PATCH v2 1/2] mac80211_hwsim: enable parent TSF feature

[PATCH v2 1/2] mac80211_hwsim: enable parent TSF feature

[James Prestwood]

Support for this is already in nl80211, and some code paths in
mac80211_hwsim already set the rx_status to allow the parent TSF
value to be sent to user space.

Signed-off-by: James Prestwood <prestwoj@gmail.com>
---
 drivers/net/wireless/mac80211_hwsim.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 772e54f0696f..e9bc599481d4 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -2825,6 +2825,7 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
 			       NL80211_FEATURE_DYNAMIC_SMPS |
 			       NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
+	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BSS_PARENT_TSF);
 
 	hw->wiphy->interface_modes = param->iftypes;
 
-- 
2.17.1

[PATCH v2 2/2] mac80211_hwsim: set rx_status mactime/flag for wmediumd path

[James Prestwood]

This patch sets the required rx_status mactime and flags in order for
the parent TSF value to be calculated and sent to userspace. This is
already done elsewhere, but this patch allows this to work for the
wmediumd code path.
---
 drivers/net/wireless/mac80211_hwsim.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index e9bc599481d4..01b2ac9707cc 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -3238,6 +3238,8 @@ static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
 	int frame_data_len;
 	void *frame_data;
 	struct sk_buff *skb = NULL;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb_2->data;
+	u64 now;
 
 	if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
 	    !info->attrs[HWSIM_ATTR_FRAME] ||
@@ -3300,6 +3302,18 @@ static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
 	rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
 	rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
 
+	if (ieee80211_is_beacon(hdr->frame_control) ||
+	    ieee80211_is_probe_resp(hdr->frame_control)) {
+		rx_status.boottime_ns = ktime_get_boottime_ns();
+		now = data2->abs_bcn_ts;
+	} else {
+		now = mac80211_hwsim_get_tsf_raw();
+	}
+
+	rx_status.mactime = now + data2->tsf_offset;
+
+	rx_status.flag |= RX_FLAG_MACTIME_START;
+
 	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 	data2->rx_pkts++;
 	data2->rx_bytes += skb->len;
-- 
2.17.1

Re: [PATCH v2 2/2] mac80211_hwsim: set rx_status mactime/flag for wmediumd path

[Johannes Berg]

On Fri, 2019-11-22 at 09:06 -0800, James Prestwood wrote:
> This patch sets the required rx_status mactime and flags in order for
> the parent TSF value to be calculated and sent to userspace. This is
> already done elsewhere, but this patch allows this to work for the
> wmediumd code path.
> 

:)

Now you just need a s-o-b.

johannes