wifi: iwlwifi: mvm: make functions public

In the following patch, iwl_mvm_roc_duration_and_delay and
iwl_mvm_roc_add_cmd will be called also from time-event.c.
Move then there (where they more belong) and make then
public.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240201155157.3edafc4d59aa.Ic68e90758bcad9ae00e0aa602101842dac60e1a1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
index 703ccdd4d967..60ec5ca6927c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c
@@ -986,6 +986,86 @@ void iwl_mvm_rx_session_protect_notif(struct iwl_mvm *mvm,
 	rcu_read_unlock();
 }
 
+#define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
+#define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
+#define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
+#define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
+#define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
+
+void iwl_mvm_roc_duration_and_delay(struct ieee80211_vif *vif,
+				    u32 duration_ms,
+				    u32 *duration_tu,
+				    u32 *delay)
+{
+	u32 dtim_interval = vif->bss_conf.dtim_period *
+		vif->bss_conf.beacon_int;
+
+	*delay = AUX_ROC_MIN_DELAY;
+	*duration_tu = MSEC_TO_TU(duration_ms);
+
+	/*
+	 * If we are associated we want the delay time to be at least one
+	 * dtim interval so that the FW can wait until after the DTIM and
+	 * then start the time event, this will potentially allow us to
+	 * remain off-channel for the max duration.
+	 * Since we want to use almost a whole dtim interval we would also
+	 * like the delay to be for 2-3 dtim intervals, in case there are
+	 * other time events with higher priority.
+	 */
+	if (vif->cfg.assoc) {
+		*delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
+		/* We cannot remain off-channel longer than the DTIM interval */
+		if (dtim_interval <= *duration_tu) {
+			*duration_tu = dtim_interval - AUX_ROC_SAFETY_BUFFER;
+			if (*duration_tu <= AUX_ROC_MIN_DURATION)
+				*duration_tu = dtim_interval -
+					AUX_ROC_MIN_SAFETY_BUFFER;
+		}
+	}
+}
+
+int iwl_mvm_roc_add_cmd(struct iwl_mvm *mvm,
+			struct ieee80211_channel *channel,
+			struct ieee80211_vif *vif,
+			int duration, u32 activity)
+{
+	int res;
+	u32 duration_tu, delay;
+	struct iwl_roc_req roc_req = {
+		.action = cpu_to_le32(FW_CTXT_ACTION_ADD),
+		.activity = cpu_to_le32(activity),
+		.sta_id = cpu_to_le32(mvm->aux_sta.sta_id),
+	};
+
+	lockdep_assert_held(&mvm->mutex);
+
+	/* Set the channel info data */
+	iwl_mvm_set_chan_info(mvm, &roc_req.channel_info,
+			      channel->hw_value,
+			      iwl_mvm_phy_band_from_nl80211(channel->band),
+			      IWL_PHY_CHANNEL_MODE20, 0);
+
+	iwl_mvm_roc_duration_and_delay(vif, duration, &duration_tu,
+				       &delay);
+	roc_req.duration = cpu_to_le32(duration_tu);
+	roc_req.max_delay = cpu_to_le32(delay);
+
+	IWL_DEBUG_TE(mvm,
+		     "\t(requested = %ums, max_delay = %ums)\n",
+		     duration, delay);
+	IWL_DEBUG_TE(mvm,
+		     "Requesting to remain on channel %u for %utu\n",
+		     channel->hw_value, duration_tu);
+
+	/* Set the node address */
+	memcpy(roc_req.node_addr, vif->addr, ETH_ALEN);
+
+	res = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, ROC_CMD),
+				   0, sizeof(roc_req), &roc_req);
+
+	return res;
+}
+
 static int
 iwl_mvm_start_p2p_roc_session_protection(struct iwl_mvm *mvm,
 					 struct ieee80211_vif *vif,