git: a781965b91ea - main - ice: Add led(4) identification support

The branch main has been updated by kbowling:

URL: https://cgit.FreeBSD.org/src/commit/?id=a781965b91ea390f9576ae42c35c842db74aab86

commit a781965b91ea390f9576ae42c35c842db74aab86
Author:     Kevin Bowling <kbowling@FreeBSD.org>
AuthorDate: 2026-08-12 01:29:31 +0000
Commit:     Kevin Bowling <kbowling@FreeBSD.org>
CommitDate: 2026-08-18 00:33:19 +0000

    ice: Add led(4) identification support
    
    Expose the firmware-controlled physical port identification LED
    through /dev/led/ice*.  Use the AdminQ port-identification command to
    select blinking mode and restore the netlist-selected original mode
    before the interface is stopped.
    
    MFC after:      2 weeks
    Sponsored by:   BBOX.io
---
 share/man/man4/ice.4       |  9 ++++++++-
 sys/dev/ice/ice_iflib.h    |  1 +
 sys/dev/ice/if_ice_iflib.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/share/man/man4/ice.4 b/share/man/man4/ice.4
index a54a6b3fd6f3..35f752e5e7f8 100644
--- a/share/man/man4/ice.4
+++ b/share/man/man4/ice.4
@@ -32,7 +32,7 @@
 .\"
 .\" * Other names and brands may be claimed as the property of others.
 .\"
-.Dd November 5, 2025
+.Dd August 11, 2026
 .Dt ICE 4
 .Os
 .Sh NAME
@@ -155,6 +155,12 @@ be set and unset.
 For more information on configuring this device, see
 .Xr ifconfig 8 .
 .Pp
+The identification LED for each port is controlled through the
+.Xr led 4
+interface at its
+.Pa /dev/led/ice*
+device node.
+.Pp
 The associated Virtual Function (VF) driver for this driver is
 .Xr iavf 4 .
 .Pp
@@ -1156,6 +1162,7 @@ email all the specific information related to the issue to
 .Aq Mt freebsd@intel.com .
 .Sh SEE ALSO
 .Xr iflib 4 ,
+.Xr led 4 ,
 .Xr vlan 4 ,
 .Xr ifconfig 8 ,
 .Xr sysctl 8
diff --git a/sys/dev/ice/ice_iflib.h b/sys/dev/ice/ice_iflib.h
index e1d5307a9516..3e3d4e5f8d84 100644
--- a/sys/dev/ice/ice_iflib.h
+++ b/sys/dev/ice/ice_iflib.h
@@ -314,6 +314,7 @@ struct ice_softc {
 
 	/* link status */
 	bool link_up;
+	bool led_active;
 
 	/* Ethertype filters enabled */
 	bool enable_tx_fc_filter;
diff --git a/sys/dev/ice/if_ice_iflib.c b/sys/dev/ice/if_ice_iflib.c
index 2722b8892d61..41324cc6779a 100644
--- a/sys/dev/ice/if_ice_iflib.c
+++ b/sys/dev/ice/if_ice_iflib.c
@@ -81,6 +81,7 @@ static void ice_if_multi_set(if_ctx_t ctx);
 static void ice_if_vlan_register(if_ctx_t ctx, u16 vtag);
 static void ice_if_vlan_unregister(if_ctx_t ctx, u16 vtag);
 static void ice_if_stop(if_ctx_t ctx);
+static void ice_if_led_func(if_ctx_t ctx, int onoff);
 static uint64_t ice_if_get_counter(if_ctx_t ctx, ift_counter counter);
 static int ice_if_priv_ioctl(if_ctx_t ctx, u_long command, caddr_t data);
 static int ice_if_i2c_req(if_ctx_t ctx, struct ifi2creq *req);
@@ -139,6 +140,7 @@ static void ice_rebuild_recovery_mode(struct ice_softc *sc);
 static void ice_free_irqvs(struct ice_softc *sc);
 static void ice_update_rx_mbuf_sz(struct ice_softc *sc);
 static void ice_poll_for_media_avail(struct ice_softc *sc);
+static void ice_led_restore(struct ice_softc *sc);
 static void ice_setup_scctx(struct ice_softc *sc);
 static int ice_allocate_msix(struct ice_softc *sc);
 static void ice_admin_timer(void *arg);
@@ -201,6 +203,7 @@ static device_method_t ice_iflib_methods[] = {
 	DEVMETHOD(ifdi_media_change, ice_if_media_change),
 	DEVMETHOD(ifdi_init, ice_if_init),
 	DEVMETHOD(ifdi_stop, ice_if_stop),
+	DEVMETHOD(ifdi_led_func, ice_if_led_func),
 	DEVMETHOD(ifdi_timer, ice_if_timer),
 	DEVMETHOD(ifdi_update_admin_status, ice_if_update_admin_status),
 	DEVMETHOD(ifdi_multi_set, ice_if_multi_set),
@@ -2524,6 +2527,9 @@ ice_prepare_for_reset(struct ice_softc *sc)
 	if (ice_test_state(&sc->state, ICE_STATE_RECOVERY_MODE))
 		return;
 
+	/* Restore identification while the control queues are still usable. */
+	ice_led_restore(sc);
+
 	/* inform the RDMA client */
 	ice_rdma_notify_reset(sc);
 	/* stop the RDMA client */
@@ -2718,6 +2724,9 @@ ice_rebuild(struct ice_softc *sc)
 	if (err)
 		goto err_shutdown_ctrlq;
 
+	/* Retry a restore which could not complete while reset was pending. */
+	ice_led_restore(sc);
+
 	err = ice_init_link_events(sc);
 	if (err) {
 		device_printf(dev, "ice_init_link_events failed: %s\n",
@@ -3139,6 +3148,7 @@ ice_if_stop(if_ctx_t ctx)
 	struct ice_softc *sc = (struct ice_softc *)iflib_get_softc(ctx);
 
 	ASSERT_CTX_LOCKED(sc);
+	ice_led_restore(sc);
 
 	/*
 	 * The iflib core may call IFDI_STOP prior to the first call to
@@ -3192,6 +3202,40 @@ ice_if_stop(if_ctx_t ctx)
 	}
 }
 
+/**
+ * ice_if_led_func - Control the physical port identification LED
+ * @ctx: iflib context structure
+ * @onoff: non-zero to identify the port, zero to restore normal operation
+ *
+ * The firmware implements identification as a blinking mode and retains the
+ * netlist-selected mode so it can be restored without a register snapshot.
+ */
+static void
+ice_if_led_func(if_ctx_t ctx, int onoff)
+{
+	struct ice_softc *sc = iflib_get_softc(ctx);
+	enum ice_status status;
+	bool active;
+
+	active = onoff != 0;
+	if (active == sc->led_active)
+		return;
+
+	status = ice_aq_set_port_id_led(sc->hw.port_info, !active, NULL);
+	if (status == ICE_SUCCESS)
+		sc->led_active = active;
+}
+
+static void
+ice_led_restore(struct ice_softc *sc)
+{
+
+	if (!sc->led_active)
+		return;
+	if (ice_aq_set_port_id_led(sc->hw.port_info, true, NULL) == ICE_SUCCESS)
+		sc->led_active = false;
+}
+
 /**
  * ice_if_get_counter - Get current value of an ifnet statistic
  * @ctx: iflib context pointer