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wifi: iwlwifi: mld: add debugfs for using ptp clock time for monitor interface

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Add a debugfs option to use the ptp clock time for Rx device
timestamps on a monitor interface. This can be useful for e.g.
synchronizing multiple NICs or reporting the timestamp in the
system clock instead of the GP2.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Link: https://patch.msgid.link/20250505215513.fffe6718fbca.I75f034005851a2d0c8ba5b015b9fdcad8a7c550d@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
This commit is contained in:
Avraham Stern
2025-05-05 21:56:44 +03:00
committed by Miri Korenblit
parent c9d8157895
commit f1699ad585
3 changed files with 18 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/intel/iwlwifi/mld/debugfs.c
View File

@@ -546,6 +546,9 @@ iwl_mld_add_debugfs_files(struct iwl_mld *mld, struct dentry *debugfs_dir)
#endif
MLD_DEBUGFS_ADD_FILE(inject_packet, debugfs_dir, 0200);
debugfs_create_bool("rx_ts_ptp", 0600, debugfs_dir,
&mld->monitor.ptp_time);
/* Create a symlink with mac80211. It will be removed when mac80211
* exits (before the opmode exits which removes the target.)
*/

2
drivers/net/wireless/intel/iwlwifi/mld/mld.h
View File

@@ -116,6 +116,7 @@
* @monitor.ampdu_toggle: the state of the previous packet to track A-MPDU
* @monitor.cur_aid: current association id tracked by the sniffer
* @monitor.cur_bssid: current bssid tracked by the sniffer
* @monitor.ptp_time: set the Rx mactime using the device's PTP clock time
* @monitor.p80: primary channel position relative to he whole bandwidth, in
* steps of 80 MHz
* @fw_id_to_link_sta: maps a fw id of a sta to the corresponding
@@ -201,6 +202,7 @@ struct iwl_mld {
#ifdef CONFIG_IWLWIFI_DEBUGFS
__le16 cur_aid;
u8 cur_bssid[ETH_ALEN];
bool ptp_time;
#endif
} monitor;
#ifdef CONFIG_PM_SLEEP

14
drivers/net/wireless/intel/iwlwifi/mld/rx.c
View File

@@ -1213,8 +1213,20 @@ static void iwl_mld_rx_fill_status(struct iwl_mld *mld, struct sk_buff *skb,
iwl_mld_rx_eht(mld, skb, phy_data, queue);
#ifdef CONFIG_IWLWIFI_DEBUGFS
if (unlikely(mld->monitor.on))
if (unlikely(mld->monitor.on)) {
iwl_mld_add_rtap_sniffer_config(mld, skb);
if (mld->monitor.ptp_time) {
u64 adj_time =
iwl_mld_ptp_get_adj_time(mld,
phy_data->gp2_on_air_rise *
NSEC_PER_USEC);
rx_status->mactime = div64_u64(adj_time, NSEC_PER_USEC);
rx_status->flag |= RX_FLAG_MACTIME_IS_RTAP_TS64;
rx_status->flag &= ~RX_FLAG_MACTIME;
}
}
#endif
if (format != RATE_MCS_MOD_TYPE_CCK && is_sgi)