#define DRV_VERSION_MAJOR 1
#define DRV_VERSION_MINOR 3
-#define DRV_VERSION_BUILD 9
+#define DRV_VERSION_BUILD 21
#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
__stringify(DRV_VERSION_MINOR) "." \
__stringify(DRV_VERSION_BUILD) DRV_KERN
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
+ struct i40e_ring *tx_ring = NULL;
+ unsigned int i, hung_queue = 0;
+ u32 head, val;
pf->tx_timeout_count++;
+ /* find the stopped queue the same way the stack does */
+ for (i = 0; i < netdev->num_tx_queues; i++) {
+ struct netdev_queue *q;
+ unsigned long trans_start;
+
+ q = netdev_get_tx_queue(netdev, i);
+ trans_start = q->trans_start ? : netdev->trans_start;
+ if (netif_xmit_stopped(q) &&
+ time_after(jiffies,
+ (trans_start + netdev->watchdog_timeo))) {
+ hung_queue = i;
+ break;
+ }
+ }
+
+ if (i == netdev->num_tx_queues) {
+ netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
+ } else {
+ /* now that we have an index, find the tx_ring struct */
+ for (i = 0; i < vsi->num_queue_pairs; i++) {
+ if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
+ if (hung_queue ==
+ vsi->tx_rings[i]->queue_index) {
+ tx_ring = vsi->tx_rings[i];
+ break;
+ }
+ }
+ }
+ }
+
if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
- pf->tx_timeout_recovery_level = 1;
+ pf->tx_timeout_recovery_level = 1; /* reset after some time */
+ else if (time_before(jiffies,
+ (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
+ return; /* don't do any new action before the next timeout */
+
+ if (tx_ring) {
+ head = i40e_get_head(tx_ring);
+ /* Read interrupt register */
+ if (pf->flags & I40E_FLAG_MSIX_ENABLED)
+ val = rd32(&pf->hw,
+ I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
+ tx_ring->vsi->base_vector - 1));
+ else
+ val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
+
+ netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
+ vsi->seid, hung_queue, tx_ring->next_to_clean,
+ head, tx_ring->next_to_use,
+ readl(tx_ring->tail), val);
+ }
+
pf->tx_timeout_last_recovery = jiffies;
- netdev_info(netdev, "tx_timeout recovery level %d\n",
- pf->tx_timeout_recovery_level);
+ netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
+ pf->tx_timeout_recovery_level, hung_queue);
switch (pf->tx_timeout_recovery_level) {
- case 0:
- /* disable and re-enable queues for the VSI */
- if (in_interrupt()) {
- set_bit(__I40E_REINIT_REQUESTED, &pf->state);
- set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
- } else {
- i40e_vsi_reinit_locked(vsi);
- }
- break;
case 1:
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
break;
break;
default:
netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
- set_bit(__I40E_DOWN_REQUESTED, &pf->state);
- set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
break;
}
+
i40e_service_event_schedule(pf);
pf->tx_timeout_recovery_level++;
}
struct i40e_hw_port_stats *nsd = &pf->stats;
struct i40e_hw *hw = &pf->hw;
u64 xoff = 0;
- u16 i, v;
if ((hw->fc.current_mode != I40E_FC_FULL) &&
(hw->fc.current_mode != I40E_FC_RX_PAUSE))
if (!(nsd->link_xoff_rx - xoff))
return;
- /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
- for (v = 0; v < pf->num_alloc_vsi; v++) {
- struct i40e_vsi *vsi = pf->vsi[v];
-
- if (!vsi || !vsi->tx_rings[0])
- continue;
-
- for (i = 0; i < vsi->num_queue_pairs; i++) {
- struct i40e_ring *ring = vsi->tx_rings[i];
- clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
- }
- }
}
/**
bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
struct i40e_dcbx_config *dcb_cfg;
struct i40e_hw *hw = &pf->hw;
- u16 i, v;
+ u16 i;
u8 tc;
dcb_cfg = &hw->local_dcbx_config;
tc = dcb_cfg->etscfg.prioritytable[i];
xoff[tc] = true;
}
-
- /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
- for (v = 0; v < pf->num_alloc_vsi; v++) {
- struct i40e_vsi *vsi = pf->vsi[v];
-
- if (!vsi || !vsi->tx_rings[0])
- continue;
-
- for (i = 0; i < vsi->num_queue_pairs; i++) {
- struct i40e_ring *ring = vsi->tx_rings[i];
-
- tc = ring->dcb_tc;
- if (xoff[tc])
- clear_bit(__I40E_HANG_CHECK_ARMED,
- &ring->state);
- }
- }
}
/**
f->is_laa = true;
}
- i40e_sync_vsi_filters(vsi);
+ i40e_sync_vsi_filters(vsi, false);
ether_addr_copy(netdev->dev_addr, addr->sa_data);
return 0;
/**
* i40e_sync_vsi_filters - Update the VSI filter list to the HW
* @vsi: ptr to the VSI
+ * @grab_rtnl: whether RTNL needs to be grabbed
*
* Push any outstanding VSI filter changes through the AdminQ.
*
* Returns 0 or error value
**/
-int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
+int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
{
struct i40e_mac_filter *f, *ftmp;
bool promisc_forced_on = false;
*/
if (pf->cur_promisc != cur_promisc) {
pf->cur_promisc = cur_promisc;
- i40e_do_reset_safe(pf,
+ if (grab_rtnl)
+ i40e_do_reset_safe(pf,
+ BIT(__I40E_PF_RESET_REQUESTED));
+ else
+ i40e_do_reset(pf,
BIT(__I40E_PF_RESET_REQUESTED));
}
} else {
for (v = 0; v < pf->num_alloc_vsi; v++) {
if (pf->vsi[v] &&
(pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
- i40e_sync_vsi_filters(pf->vsi[v]);
+ i40e_sync_vsi_filters(pf->vsi[v], true);
}
}
test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
return 0;
- return i40e_sync_vsi_filters(vsi);
+ return i40e_sync_vsi_filters(vsi, false);
}
/**
test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
return 0;
- return i40e_sync_vsi_filters(vsi);
+ return i40e_sync_vsi_filters(vsi, false);
}
/**
wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
i40e_flush(hw);
- clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
-
/* cache tail off for easier writes later */
ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
}
#endif
+
+/**
+ * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
+ * @q_idx: TX queue number
+ * @vsi: Pointer to VSI struct
+ *
+ * This function checks specified queue for given VSI. Detects hung condition.
+ * Sets hung bit since it is two step process. Before next run of service task
+ * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
+ * hung condition remain unchanged and during subsequent run, this function
+ * issues SW interrupt to recover from hung condition.
+ **/
+static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
+{
+ struct i40e_ring *tx_ring = NULL;
+ struct i40e_pf *pf;
+ u32 head, val, tx_pending;
+ int i;
+
+ pf = vsi->back;
+
+ /* now that we have an index, find the tx_ring struct */
+ for (i = 0; i < vsi->num_queue_pairs; i++) {
+ if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
+ if (q_idx == vsi->tx_rings[i]->queue_index) {
+ tx_ring = vsi->tx_rings[i];
+ break;
+ }
+ }
+ }
+
+ if (!tx_ring)
+ return;
+
+ /* Read interrupt register */
+ if (pf->flags & I40E_FLAG_MSIX_ENABLED)
+ val = rd32(&pf->hw,
+ I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
+ tx_ring->vsi->base_vector - 1));
+ else
+ val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
+
+ head = i40e_get_head(tx_ring);
+
+ tx_pending = i40e_get_tx_pending(tx_ring);
+
+ /* Interrupts are disabled and TX pending is non-zero,
+ * trigger the SW interrupt (don't wait). Worst case
+ * there will be one extra interrupt which may result
+ * into not cleaning any queues because queues are cleaned.
+ */
+ if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
+ i40e_force_wb(vsi, tx_ring->q_vector);
+}
+
+/**
+ * i40e_detect_recover_hung - Function to detect and recover hung_queues
+ * @pf: pointer to PF struct
+ *
+ * LAN VSI has netdev and netdev has TX queues. This function is to check
+ * each of those TX queues if they are hung, trigger recovery by issuing
+ * SW interrupt.
+ **/
+static void i40e_detect_recover_hung(struct i40e_pf *pf)
+{
+ struct net_device *netdev;
+ struct i40e_vsi *vsi;
+ int i;
+
+ /* Only for LAN VSI */
+ vsi = pf->vsi[pf->lan_vsi];
+
+ if (!vsi)
+ return;
+
+ /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
+ if (test_bit(__I40E_DOWN, &vsi->back->state) ||
+ test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
+ return;
+
+ /* Make sure type is MAIN VSI */
+ if (vsi->type != I40E_VSI_MAIN)
+ return;
+
+ netdev = vsi->netdev;
+ if (!netdev)
+ return;
+
+ /* Bail out if netif_carrier is not OK */
+ if (!netif_carrier_ok(netdev))
+ return;
+
+ /* Go thru' TX queues for netdev */
+ for (i = 0; i < netdev->num_tx_queues; i++) {
+ struct netdev_queue *q;
+
+ q = netdev_get_tx_queue(netdev, i);
+ if (q)
+ i40e_detect_recover_hung_queue(i, vsi);
+ }
+}
+
/**
* i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
* @pf: pointer to PF
i40e_ptp_set_increment(pf);
}
-/**
- * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
- * @pf: board private structure
- *
- * Set the per-queue flags to request a check for stuck queues in the irq
- * clean functions, then force interrupts to be sure the irq clean is called.
- **/
-static void i40e_check_hang_subtask(struct i40e_pf *pf)
-{
- int i, v;
-
- /* If we're down or resetting, just bail */
- if (test_bit(__I40E_DOWN, &pf->state) ||
- test_bit(__I40E_CONFIG_BUSY, &pf->state))
- return;
-
- /* for each VSI/netdev
- * for each Tx queue
- * set the check flag
- * for each q_vector
- * force an interrupt
- */
- for (v = 0; v < pf->num_alloc_vsi; v++) {
- struct i40e_vsi *vsi = pf->vsi[v];
- int armed = 0;
-
- if (!pf->vsi[v] ||
- test_bit(__I40E_DOWN, &vsi->state) ||
- (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
- continue;
-
- for (i = 0; i < vsi->num_queue_pairs; i++) {
- set_check_for_tx_hang(vsi->tx_rings[i]);
- if (test_bit(__I40E_HANG_CHECK_ARMED,
- &vsi->tx_rings[i]->state))
- armed++;
- }
-
- if (armed) {
- if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
- wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
- (I40E_PFINT_DYN_CTL0_INTENA_MASK |
- I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
- I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
- I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
- I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
- } else {
- u16 vec = vsi->base_vector - 1;
- u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
- I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
- I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
- I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
- I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
- for (i = 0; i < vsi->num_q_vectors; i++, vec++)
- wr32(&vsi->back->hw,
- I40E_PFINT_DYN_CTLN(vec), val);
- }
- i40e_flush(&vsi->back->hw);
- }
- }
-}
-
/**
* i40e_watchdog_subtask - periodic checks not using event driven response
* @pf: board private structure
return;
pf->service_timer_previous = jiffies;
- i40e_check_hang_subtask(pf);
i40e_link_event(pf);
/* Update the stats for active netdevs so the network stack
return;
}
+ i40e_detect_recover_hung(pf);
i40e_reset_subtask(pf);
i40e_handle_mdd_event(pf);
i40e_vc_process_vflr_event(pf);
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
i40e_del_filter(vsi, f->macaddr, f->vlan,
f->is_vf, f->is_netdev);
- i40e_sync_vsi_filters(vsi);
+ i40e_sync_vsi_filters(vsi, false);
i40e_vsi_delete(vsi);
i40e_vsi_free_q_vectors(vsi);
INIT_WORK(&pf->service_task, i40e_service_task);
clear_bit(__I40E_SERVICE_SCHED, &pf->state);
pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
- pf->link_check_timeout = jiffies;
/* WoL defaults to disabled */
pf->wol_en = false;
projects / karo-tx-linux.git / blobdiff