--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2024, Intel Corporation. */
+
+#include "health.h"
+#include "ice.h"
+
+#define ICE_DEVLINK_FMSG_PUT_FIELD(fmsg, obj, name) \
+ devlink_fmsg_put(fmsg, #name, (obj)->name)
+
+/**
+ * ice_devlink_health_report - boilerplate to call given @reporter
+ *
+ * @reporter: devlink health reporter to call, do nothing on NULL
+ * @msg: message to pass up, "event name" is fine
+ * @priv_ctx: typically some event struct
+ */
+static void ice_devlink_health_report(struct devlink_health_reporter *reporter,
+ const char *msg, void *priv_ctx)
+{
+ if (!reporter)
+ return;
+
+ /* We do not do auto recovering, so return value of the below function
+ * will always be 0, thus we do ignore it.
+ */
+ devlink_health_report(reporter, msg, priv_ctx);
+}
+
+/**
+ * ice_fmsg_put_ptr - put hex value of pointer into fmsg
+ *
+ * @fmsg: devlink fmsg under construction
+ * @name: name to pass
+ * @ptr: 64 bit value to print as hex and put into fmsg
+ */
+static void ice_fmsg_put_ptr(struct devlink_fmsg *fmsg, const char *name,
+ void *ptr)
+{
+ char buf[sizeof(ptr) * 3];
+
+ sprintf(buf, "%p", ptr);
+ devlink_fmsg_put(fmsg, name, buf);
+}
+
+struct ice_tx_hang_event {
+ u32 head;
+ u32 intr;
+ u16 vsi_num;
+ u16 queue;
+ u16 next_to_clean;
+ u16 next_to_use;
+ struct ice_tx_ring *tx_ring;
+};
+
+static int ice_tx_hang_reporter_dump(struct devlink_health_reporter *reporter,
+ struct devlink_fmsg *fmsg, void *priv_ctx,
+ struct netlink_ext_ack *extack)
+{
+ struct ice_tx_hang_event *event = priv_ctx;
+ struct sk_buff *skb;
+
+ if (!event)
+ return 0;
+
+ skb = event->tx_ring->tx_buf->skb;
+ devlink_fmsg_obj_nest_start(fmsg);
+ ICE_DEVLINK_FMSG_PUT_FIELD(fmsg, event, head);
+ ICE_DEVLINK_FMSG_PUT_FIELD(fmsg, event, intr);
+ ICE_DEVLINK_FMSG_PUT_FIELD(fmsg, event, vsi_num);
+ ICE_DEVLINK_FMSG_PUT_FIELD(fmsg, event, queue);
+ ICE_DEVLINK_FMSG_PUT_FIELD(fmsg, event, next_to_clean);
+ ICE_DEVLINK_FMSG_PUT_FIELD(fmsg, event, next_to_use);
+ devlink_fmsg_put(fmsg, "irq-mapping", event->tx_ring->q_vector->name);
+ ice_fmsg_put_ptr(fmsg, "desc-ptr", event->tx_ring->desc);
+ ice_fmsg_put_ptr(fmsg, "dma-ptr", (void *)(long)event->tx_ring->dma);
+ ice_fmsg_put_ptr(fmsg, "skb-ptr", skb);
+ devlink_fmsg_binary_pair_put(fmsg, "desc", event->tx_ring->desc,
+ event->tx_ring->count * sizeof(struct ice_tx_desc));
+ devlink_fmsg_dump_skb(fmsg, skb);
+ devlink_fmsg_obj_nest_end(fmsg);
+
+ return 0;
+}
+
+void ice_prep_tx_hang_report(struct ice_pf *pf, struct ice_tx_ring *tx_ring,
+ u16 vsi_num, u32 head, u32 intr)
+{
+ struct ice_health_tx_hang_buf *buf = &pf->health_reporters.tx_hang_buf;
+
+ buf->tx_ring = tx_ring;
+ buf->vsi_num = vsi_num;
+ buf->head = head;
+ buf->intr = intr;
+}
+
+void ice_report_tx_hang(struct ice_pf *pf)
+{
+ struct ice_health_tx_hang_buf *buf = &pf->health_reporters.tx_hang_buf;
+ struct ice_tx_ring *tx_ring = buf->tx_ring;
+
+ struct ice_tx_hang_event ev = {
+ .head = buf->head,
+ .intr = buf->intr,
+ .vsi_num = buf->vsi_num,
+ .queue = tx_ring->q_index,
+ .next_to_clean = tx_ring->next_to_clean,
+ .next_to_use = tx_ring->next_to_use,
+ .tx_ring = tx_ring,
+ };
+
+ ice_devlink_health_report(pf->health_reporters.tx_hang, "Tx hang", &ev);
+}
+
+static struct devlink_health_reporter *
+ice_init_devlink_rep(struct ice_pf *pf,
+ const struct devlink_health_reporter_ops *ops)
+{
+ struct devlink *devlink = priv_to_devlink(pf);
+ struct devlink_health_reporter *rep;
+ const u64 graceful_period = 0;
+
+ rep = devl_health_reporter_create(devlink, ops, graceful_period, pf);
+ if (IS_ERR(rep)) {
+ struct device *dev = ice_pf_to_dev(pf);
+
+ dev_err(dev, "failed to create devlink %s health report er",
+ ops->name);
+ return NULL;
+ }
+ return rep;
+}
+
+#define ICE_DEFINE_HEALTH_REPORTER_OPS(_name) \
+ static const struct devlink_health_reporter_ops ice_ ## _name ## _reporter_ops = { \
+ .name = #_name, \
+ .dump = ice_ ## _name ## _reporter_dump, \
+}
+
+ICE_DEFINE_HEALTH_REPORTER_OPS(tx_hang);
+
+/**
+ * ice_health_init - allocate and init all ice devlink health reporters and
+ * accompanied data
+ *
+ * @pf: PF struct
+ */
+void ice_health_init(struct ice_pf *pf)
+{
+ struct ice_health *reps = &pf->health_reporters;
+
+ reps->tx_hang = ice_init_devlink_rep(pf, &ice_tx_hang_reporter_ops);
+}
+
+/**
+ * ice_deinit_devl_reporter - destroy given devlink health reporter
+ * @reporter: reporter to destroy
+ */
+static void ice_deinit_devl_reporter(struct devlink_health_reporter *reporter)
+{
+ if (reporter)
+ devl_health_reporter_destroy(reporter);
+}
+
+/**
+ * ice_health_deinit - deallocate all ice devlink health reporters and
+ * accompanied data
+ *
+ * @pf: PF struct
+ */
+void ice_health_deinit(struct ice_pf *pf)
+{
+ ice_deinit_devl_reporter(pf->health_reporters.tx_hang);
+}
+
+static
+void ice_health_assign_healthy_state(struct devlink_health_reporter *reporter)
+{
+ if (reporter)
+ devlink_health_reporter_state_update(reporter,
+ DEVLINK_HEALTH_REPORTER_STATE_HEALTHY);
+}
+
+/**
+ * ice_health_clear - clear devlink health issues after a reset
+ * @pf: the PF device structure
+ *
+ * Mark the PF in healthy state again after a reset has completed.
+ */
+void ice_health_clear(struct ice_pf *pf)
+{
+ ice_health_assign_healthy_state(pf->health_reporters.tx_hang);
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2024, Intel Corporation. */
+
+#ifndef _HEALTH_H_
+#define _HEALTH_H_
+
+#include <linux/types.h>
+
+/**
+ * DOC: health.h
+ *
+ * This header file stores everything that is needed for broadly understood
+ * devlink health mechanism for ice driver.
+ */
+
+struct ice_pf;
+struct ice_tx_ring;
+
+/**
+ * struct ice_health - stores ice devlink health reporters and accompanied data
+ * @tx_hang: devlink health reporter for tx_hang event
+ * @tx_hang_buf: pre-allocated place to put info for Tx hang reporter from
+ * non-sleeping context
+ * @tx_ring: ring that the hang occurred on
+ * @head: descriptor head
+ * @intr: interrupt register value
+ * @vsi_num: VSI owning the queue that the hang occurred on
+ */
+struct ice_health {
+ struct devlink_health_reporter *tx_hang;
+ struct_group_tagged(ice_health_tx_hang_buf, tx_hang_buf,
+ struct ice_tx_ring *tx_ring;
+ u32 head;
+ u32 intr;
+ u16 vsi_num;
+ );
+};
+
+void ice_health_init(struct ice_pf *pf);
+void ice_health_deinit(struct ice_pf *pf);
+void ice_health_clear(struct ice_pf *pf);
+
+void ice_prep_tx_hang_report(struct ice_pf *pf, struct ice_tx_ring *tx_ring,
+ u16 vsi_num, u32 head, u32 intr);
+void ice_report_tx_hang(struct ice_pf *pf);
+
+#endif /* _HEALTH_H_ */
struct ice_pf *pf = container_of(work, struct ice_pf, serv_task);
unsigned long start_time = jiffies;
- /* subtasks */
+ if (pf->health_reporters.tx_hang_buf.tx_ring) {
+ ice_report_tx_hang(pf);
+ pf->health_reporters.tx_hang_buf.tx_ring = NULL;
+ }
- /* process reset requests first */
ice_reset_subtask(pf);
/* bail if a reset/recovery cycle is pending or rebuild failed */
return err;
ice_devlink_init_regions(pf);
+ ice_health_init(pf);
ice_devlink_register(pf);
return 0;
static void ice_deinit_devlink(struct ice_pf *pf)
{
ice_devlink_unregister(pf);
+ ice_health_deinit(pf);
ice_devlink_destroy_regions(pf);
ice_devlink_unregister_params(pf);
}
/* if we get here, reset flow is successful */
clear_bit(ICE_RESET_FAILED, pf->state);
+ ice_health_clear(pf);
+
ice_plug_aux_dev(pf);
if (ice_is_feature_supported(pf, ICE_F_SRIOV_LAG))
ice_lag_rebuild(pf);
if (tx_ring) {
struct ice_hw *hw = &pf->hw;
- u32 head, val = 0;
+ u32 head, intr = 0;
head = FIELD_GET(QTX_COMM_HEAD_HEAD_M,
rd32(hw, QTX_COMM_HEAD(vsi->txq_map[txqueue])));
/* Read interrupt register */
- val = rd32(hw, GLINT_DYN_CTL(tx_ring->q_vector->reg_idx));
+ intr = rd32(hw, GLINT_DYN_CTL(tx_ring->q_vector->reg_idx));
netdev_info(netdev, "tx_timeout: VSI_num: %d, Q %u, NTC: 0x%x, HW_HEAD: 0x%x, NTU: 0x%x, INT: 0x%x\n",
vsi->vsi_num, txqueue, tx_ring->next_to_clean,
- head, tx_ring->next_to_use, val);
+ head, tx_ring->next_to_use, intr);
+
+ ice_prep_tx_hang_report(pf, tx_ring, vsi->vsi_num, head, intr);
}
pf->tx_timeout_last_recovery = jiffies;
projects / thirdparty / kernel / linux.git / commitdiff
