net/bnxt: fix ring and context memory allocation
[dpdk.git] / drivers / net / bnxt / bnxt_flow.c
index bd6c726..59489b5 100644 (file)
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2014-2018 Broadcom
+ * Copyright(c) 2014-2021 Broadcom
  * All rights reserved.
  */
 
 #include <rte_flow.h>
 #include <rte_flow_driver.h>
 #include <rte_tailq.h>
+#include <rte_alarm.h>
+#include <rte_cycles.h>
 
 #include "bnxt.h"
 #include "bnxt_filter.h"
 #include "bnxt_hwrm.h"
 #include "bnxt_ring.h"
 #include "bnxt_rxq.h"
+#include "bnxt_rxr.h"
 #include "bnxt_vnic.h"
 #include "hsi_struct_def_dpdk.h"
 
@@ -185,11 +188,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
                                PMD_DRV_LOG(DEBUG, "Parse inner header\n");
                        break;
                case RTE_FLOW_ITEM_TYPE_ETH:
-                       if (!item->spec || !item->mask)
+                       if (!item->spec)
                                break;
 
                        eth_spec = item->spec;
-                       eth_mask = item->mask;
+
+                       if (item->mask)
+                               eth_mask = item->mask;
+                       else
+                               eth_mask = &rte_flow_item_eth_mask;
 
                        /* Source MAC address mask cannot be partially set.
                         * Should be All 0's or all 1's.
@@ -278,7 +285,12 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
                        break;
                case RTE_FLOW_ITEM_TYPE_VLAN:
                        vlan_spec = item->spec;
-                       vlan_mask = item->mask;
+
+                       if (item->mask)
+                               vlan_mask = item->mask;
+                       else
+                               vlan_mask = &rte_flow_item_vlan_mask;
+
                        if (en & en_ethertype) {
                                rte_flow_error_set(error, EINVAL,
                                                   RTE_FLOW_ERROR_TYPE_ITEM,
@@ -321,11 +333,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
                case RTE_FLOW_ITEM_TYPE_IPV4:
                        /* If mask is not involved, we could use EM filters. */
                        ipv4_spec = item->spec;
-                       ipv4_mask = item->mask;
 
-                       if (!item->spec || !item->mask)
+                       if (!item->spec)
                                break;
 
+                       if (item->mask)
+                               ipv4_mask = item->mask;
+                       else
+                               ipv4_mask = &rte_flow_item_ipv4_mask;
+
                        /* Only IP DST and SRC fields are maskable. */
                        if (ipv4_mask->hdr.version_ihl ||
                            ipv4_mask->hdr.type_of_service ||
@@ -382,11 +398,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
                        break;
                case RTE_FLOW_ITEM_TYPE_IPV6:
                        ipv6_spec = item->spec;
-                       ipv6_mask = item->mask;
 
-                       if (!item->spec || !item->mask)
+                       if (!item->spec)
                                break;
 
+                       if (item->mask)
+                               ipv6_mask = item->mask;
+                       else
+                               ipv6_mask = &rte_flow_item_ipv6_mask;
+
                        /* Only IP DST and SRC fields are maskable. */
                        if (ipv6_mask->hdr.vtc_flow ||
                            ipv6_mask->hdr.payload_len ||
@@ -434,11 +454,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
                        break;
                case RTE_FLOW_ITEM_TYPE_TCP:
                        tcp_spec = item->spec;
-                       tcp_mask = item->mask;
 
-                       if (!item->spec || !item->mask)
+                       if (!item->spec)
                                break;
 
+                       if (item->mask)
+                               tcp_mask = item->mask;
+                       else
+                               tcp_mask = &rte_flow_item_tcp_mask;
+
                        /* Check TCP mask. Only DST & SRC ports are maskable */
                        if (tcp_mask->hdr.sent_seq ||
                            tcp_mask->hdr.recv_ack ||
@@ -479,11 +503,15 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
                        break;
                case RTE_FLOW_ITEM_TYPE_UDP:
                        udp_spec = item->spec;
-                       udp_mask = item->mask;
 
-                       if (!item->spec || !item->mask)
+                       if (!item->spec)
                                break;
 
+                       if (item->mask)
+                               udp_mask = item->mask;
+                       else
+                               udp_mask = &rte_flow_item_udp_mask;
+
                        if (udp_mask->hdr.dgram_len ||
                            udp_mask->hdr.dgram_cksum) {
                                rte_flow_error_set(error,
@@ -551,7 +579,7 @@ bnxt_validate_and_parse_flow_type(struct bnxt *bp,
                        }
 
                        /* Check if VNI is masked. */
-                       if (vxlan_spec && vxlan_mask) {
+                       if (vxlan_mask != NULL) {
                                vni_masked =
                                        !!memcmp(vxlan_mask->vni, vni_mask,
                                                 RTE_DIM(vni_mask));
@@ -891,33 +919,59 @@ bnxt_get_l2_filter(struct bnxt *bp, struct bnxt_filter_info *nf,
        return l2_filter;
 }
 
-static int bnxt_vnic_prep(struct bnxt *bp, struct bnxt_vnic_info *vnic)
+static void bnxt_vnic_cleanup(struct bnxt *bp, struct bnxt_vnic_info *vnic)
+{
+       if (vnic->rx_queue_cnt > 1)
+               bnxt_hwrm_vnic_ctx_free(bp, vnic);
+
+       bnxt_hwrm_vnic_free(bp, vnic);
+
+       rte_free(vnic->fw_grp_ids);
+       vnic->fw_grp_ids = NULL;
+
+       vnic->rx_queue_cnt = 0;
+}
+
+static int bnxt_vnic_prep(struct bnxt *bp, struct bnxt_vnic_info *vnic,
+                         const struct rte_flow_action *act,
+                         struct rte_flow_error *error)
 {
        struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
        uint64_t rx_offloads = dev_conf->rxmode.offloads;
        int rc;
 
+       if (bp->nr_vnics > bp->max_vnics - 1)
+               return rte_flow_error_set(error, EINVAL,
+                                         RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
+                                         NULL,
+                                         "Group id is invalid");
+
        rc = bnxt_vnic_grp_alloc(bp, vnic);
        if (rc)
-               goto ret;
+               return rte_flow_error_set(error, -rc,
+                                         RTE_FLOW_ERROR_TYPE_ACTION,
+                                         act,
+                                         "Failed to alloc VNIC group");
 
        rc = bnxt_hwrm_vnic_alloc(bp, vnic);
        if (rc) {
-               PMD_DRV_LOG(ERR, "HWRM vnic alloc failure rc: %x\n", rc);
+               rte_flow_error_set(error, -rc,
+                                  RTE_FLOW_ERROR_TYPE_ACTION,
+                                  act,
+                                  "Failed to alloc VNIC");
                goto ret;
        }
-       bp->nr_vnics++;
 
        /* RSS context is required only when there is more than one RSS ring */
        if (vnic->rx_queue_cnt > 1) {
-               rc = bnxt_hwrm_vnic_ctx_alloc(bp, vnic, 0 /* ctx_idx 0 */);
+               rc = bnxt_hwrm_vnic_ctx_alloc(bp, vnic, 0);
                if (rc) {
-                       PMD_DRV_LOG(ERR,
-                                   "HWRM vnic ctx alloc failure: %x\n", rc);
+                       rte_flow_error_set(error, -rc,
+                                          RTE_FLOW_ERROR_TYPE_ACTION,
+                                          act,
+                                          "Failed to alloc VNIC context");
                        goto ret;
                }
-       } else {
-               PMD_DRV_LOG(DEBUG, "No RSS context required\n");
        }
 
        if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
@@ -926,12 +980,29 @@ static int bnxt_vnic_prep(struct bnxt *bp, struct bnxt_vnic_info *vnic)
                vnic->vlan_strip = false;
 
        rc = bnxt_hwrm_vnic_cfg(bp, vnic);
-       if (rc)
+       if (rc) {
+               rte_flow_error_set(error, -rc,
+                                  RTE_FLOW_ERROR_TYPE_ACTION,
+                                  act,
+                                  "Failed to configure VNIC");
                goto ret;
+       }
 
-       bnxt_hwrm_vnic_plcmode_cfg(bp, vnic);
+       rc = bnxt_hwrm_vnic_plcmode_cfg(bp, vnic);
+       if (rc) {
+               rte_flow_error_set(error, -rc,
+                                  RTE_FLOW_ERROR_TYPE_ACTION,
+                                  act,
+                                  "Failed to configure VNIC plcmode");
+               goto ret;
+       }
+
+       bp->nr_vnics++;
+
+       return 0;
 
 ret:
+       bnxt_vnic_cleanup(bp, vnic);
        return rc;
 }
 
@@ -1053,6 +1124,13 @@ start:
                }
                PMD_DRV_LOG(DEBUG, "Queue index %d\n", act_q->index);
 
+               if (use_ntuple && !BNXT_RFS_NEEDS_VNIC(bp)) {
+                       filter->flags =
+                               HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_FLAGS_DEST_RFS_RING_IDX;
+                       filter->dst_id = act_q->index;
+                       goto skip_vnic_alloc;
+               }
+
                vnic_id = attr->group;
                if (!vnic_id) {
                        PMD_DRV_LOG(DEBUG, "Group id is 0\n");
@@ -1104,16 +1182,9 @@ start:
 
                PMD_DRV_LOG(DEBUG, "VNIC found\n");
 
-               rc = bnxt_vnic_prep(bp, vnic);
-               if (rc)  {
-                       rte_flow_error_set(error,
-                                          EINVAL,
-                                          RTE_FLOW_ERROR_TYPE_ACTION,
-                                          act,
-                                          "VNIC prep fail");
-                       rc = -rte_errno;
+               rc = bnxt_vnic_prep(bp, vnic, act, error);
+               if (rc)
                        goto ret;
-               }
 
                PMD_DRV_LOG(DEBUG,
                            "vnic[%d] = %p vnic->fw_grp_ids = %p\n",
@@ -1124,7 +1195,7 @@ use_vnic:
                PMD_DRV_LOG(DEBUG,
                            "Setting vnic ff_idx %d\n", vnic->ff_pool_idx);
                filter->dst_id = vnic->fw_vnic_id;
-
+skip_vnic_alloc:
                /* For ntuple filter, create the L2 filter with default VNIC.
                 * The user specified redirect queue will be set while creating
                 * the ntuple filter in hardware.
@@ -1263,7 +1334,6 @@ use_vnic:
                vnic_id = attr->group;
 
                BNXT_VALID_VNIC_OR_RET(bp, vnic_id);
-
                vnic = &bp->vnic_info[vnic_id];
 
                /* Check if requested RSS config matches RSS config of VNIC
@@ -1325,16 +1395,9 @@ use_vnic:
                vnic->end_grp_id = rss->queue[rss->queue_num - 1];
                vnic->func_default = 0; //This is not a default VNIC.
 
-               rc = bnxt_vnic_prep(bp, vnic);
-               if (rc) {
-                       rte_flow_error_set(error,
-                                          EINVAL,
-                                          RTE_FLOW_ERROR_TYPE_ACTION,
-                                          act,
-                                          "VNIC prep fail");
-                       rc = -rte_errno;
+               rc = bnxt_vnic_prep(bp, vnic, act, error);
+               if (rc)
                        goto ret;
-               }
 
                PMD_DRV_LOG(DEBUG,
                            "vnic[%d] = %p vnic->fw_grp_ids = %p\n",
@@ -1363,13 +1426,15 @@ use_vnic:
                if (vnic->rx_queue_cnt > 1) {
                        vnic->hash_type =
                                bnxt_rte_to_hwrm_hash_types(rss->types);
+                       vnic->hash_mode =
+                       bnxt_rte_to_hwrm_hash_level(bp, rss->types, rss->level);
 
                        if (!rss->key_len) {
                                /* If hash key has not been specified,
                                 * use random hash key.
                                 */
-                               prandom_bytes(vnic->rss_hash_key,
-                                             HW_HASH_KEY_SIZE);
+                               bnxt_prandom_bytes(vnic->rss_hash_key,
+                                                  HW_HASH_KEY_SIZE);
                        } else {
                                if (rss->key_len > HW_HASH_KEY_SIZE)
                                        memcpy(vnic->rss_hash_key,
@@ -1402,18 +1467,6 @@ vnic_found:
                bnxt_update_filter_flags_en(filter, filter1, use_ntuple);
                break;
        case RTE_FLOW_ACTION_TYPE_MARK:
-               if (bp->flags & BNXT_FLAG_RX_VECTOR_PKT_MODE) {
-                       PMD_DRV_LOG(DEBUG,
-                                   "Disable vector processing for mark\n");
-                       rte_flow_error_set(error,
-                                          ENOTSUP,
-                                          RTE_FLOW_ERROR_TYPE_ACTION,
-                                          act,
-                                          "Disable vector processing for mark");
-                       rc = -rte_errno;
-                       goto ret;
-               }
-
                if (bp->mark_table == NULL) {
                        rte_flow_error_set(error,
                                           ENOMEM,
@@ -1424,6 +1477,13 @@ vnic_found:
                        goto ret;
                }
 
+               if (bp->flags & BNXT_FLAG_RX_VECTOR_PKT_MODE) {
+                       PMD_DRV_LOG(DEBUG,
+                                   "Disabling vector processing for mark\n");
+                       bp->eth_dev->rx_pkt_burst = bnxt_recv_pkts;
+                       bp->flags &= ~BNXT_FLAG_RX_VECTOR_PKT_MODE;
+               }
+
                filter->valid_flags |= BNXT_FLOW_MARK_FLAG;
                filter->mark = ((const struct rte_flow_action_mark *)
                                act->conf)->id;
@@ -1502,9 +1562,11 @@ bnxt_flow_validate(struct rte_eth_dev *dev,
 
        filter = bnxt_get_unused_filter(bp);
        if (filter == NULL) {
-               PMD_DRV_LOG(ERR, "Not enough resources for a new flow.\n");
+               rte_flow_error_set(error, ENOSPC,
+                                  RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+                                  "Not enough resources for a new flow");
                bnxt_release_flow_lock(bp);
-               return -ENOMEM;
+               return -ENOSPC;
        }
 
        ret = bnxt_validate_and_parse_flow(dev, pattern, actions, attr,
@@ -1515,10 +1577,8 @@ bnxt_flow_validate(struct rte_eth_dev *dev,
        vnic = find_matching_vnic(bp, filter);
        if (vnic) {
                if (STAILQ_EMPTY(&vnic->filter)) {
-                       rte_free(vnic->fw_grp_ids);
-                       bnxt_hwrm_vnic_ctx_free(bp, vnic);
-                       bnxt_hwrm_vnic_free(bp, vnic);
-                       vnic->rx_queue_cnt = 0;
+                       bnxt_vnic_cleanup(bp, vnic);
+                       bp->nr_vnics--;
                        PMD_DRV_LOG(DEBUG, "Free VNIC\n");
                }
        }
@@ -1628,6 +1688,51 @@ bnxt_match_filter(struct bnxt *bp, struct bnxt_filter_info *nf)
        return 0;
 }
 
+static void
+bnxt_setup_flow_counter(struct bnxt *bp)
+{
+       if (bp->fw_cap & BNXT_FW_CAP_ADV_FLOW_COUNTERS &&
+           !(bp->flags & BNXT_FLAG_FC_THREAD) && BNXT_FLOW_XSTATS_EN(bp)) {
+               rte_eal_alarm_set(US_PER_S * BNXT_FC_TIMER,
+                                 bnxt_flow_cnt_alarm_cb,
+                                 (void *)bp);
+               bp->flags |= BNXT_FLAG_FC_THREAD;
+       }
+}
+
+void bnxt_flow_cnt_alarm_cb(void *arg)
+{
+       int rc = 0;
+       struct bnxt *bp = arg;
+
+       if (!bp->flow_stat->rx_fc_out_tbl.va) {
+               PMD_DRV_LOG(ERR, "bp->flow_stat->rx_fc_out_tbl.va is NULL?\n");
+               bnxt_cancel_fc_thread(bp);
+               return;
+       }
+
+       if (!bp->flow_stat->flow_count) {
+               bnxt_cancel_fc_thread(bp);
+               return;
+       }
+
+       if (!bp->eth_dev->data->dev_started) {
+               bnxt_cancel_fc_thread(bp);
+               return;
+       }
+
+       rc = bnxt_flow_stats_req(bp);
+       if (rc) {
+               PMD_DRV_LOG(ERR, "Flow stat alarm not rescheduled.\n");
+               return;
+       }
+
+       rte_eal_alarm_set(US_PER_S * BNXT_FC_TIMER,
+                         bnxt_flow_cnt_alarm_cb,
+                         (void *)bp);
+}
+
+
 static struct rte_flow *
 bnxt_flow_create(struct rte_eth_dev *dev,
                 const struct rte_flow_attr *attr,
@@ -1641,7 +1746,7 @@ bnxt_flow_create(struct rte_eth_dev *dev,
        bool update_flow = false;
        struct rte_flow *flow;
        int ret = 0;
-       uint32_t tun_type;
+       uint32_t tun_type, flow_id;
 
        if (BNXT_VF(bp) && !BNXT_VF_IS_TRUSTED(bp)) {
                rte_flow_error_set(error, EINVAL,
@@ -1744,15 +1849,30 @@ bnxt_flow_create(struct rte_eth_dev *dev,
                filter->enables |=
                        HWRM_CFA_EM_FLOW_ALLOC_INPUT_ENABLES_L2_FILTER_ID;
                ret = bnxt_hwrm_set_em_filter(bp, filter->dst_id, filter);
+               if (ret != 0) {
+                       rte_flow_error_set(error, -ret,
+                                          RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+                                          "Failed to create EM filter");
+                       goto free_filter;
+               }
        }
 
        if (filter->filter_type == HWRM_CFA_NTUPLE_FILTER) {
                filter->enables |=
                        HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_ENABLES_L2_FILTER_ID;
                ret = bnxt_hwrm_set_ntuple_filter(bp, filter->dst_id, filter);
+               if (ret != 0) {
+                       rte_flow_error_set(error, -ret,
+                                          RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+                                          "Failed to create ntuple filter");
+                       goto free_filter;
+               }
        }
 
-       vnic = find_matching_vnic(bp, filter);
+       if (BNXT_RFS_NEEDS_VNIC(bp))
+               vnic = find_matching_vnic(bp, filter);
+       else
+               vnic = BNXT_GET_DEFAULT_VNIC(bp);
 done:
        if (!ret || update_flow) {
                flow->filter = filter;
@@ -1762,9 +1882,6 @@ done:
                        goto free_flow;
                }
 
-               STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
-               PMD_DRV_LOG(DEBUG, "Successfully created flow.\n");
-               STAILQ_INSERT_TAIL(&vnic->flow_list, flow, next);
                if (filter->valid_flags & BNXT_FLOW_MARK_FLAG) {
                        PMD_DRV_LOG(DEBUG,
                                    "Mark action: mark id 0x%x, flow id 0x%x\n",
@@ -1773,10 +1890,27 @@ done:
                        /* TCAM and EM should be 16-bit only.
                         * Other modes not supported.
                         */
-                       bp->mark_table[filter->flow_id & BNXT_FLOW_ID_MASK] =
-                               filter->mark;
+                       flow_id = filter->flow_id & BNXT_FLOW_ID_MASK;
+                       if (bp->mark_table[flow_id].valid) {
+                               rte_flow_error_set(error, EEXIST,
+                                                  RTE_FLOW_ERROR_TYPE_HANDLE,
+                                                  NULL,
+                                                  "Flow with mark id exists");
+                               bnxt_clear_one_vnic_filter(bp, filter);
+                               goto free_filter;
+                       }
+                       bp->mark_table[flow_id].valid = true;
+                       bp->mark_table[flow_id].mark_id = filter->mark;
                }
+
+               STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
+               STAILQ_INSERT_TAIL(&vnic->flow_list, flow, next);
+
+               if (BNXT_FLOW_XSTATS_EN(bp))
+                       bp->flow_stat->flow_count++;
                bnxt_release_flow_lock(bp);
+               bnxt_setup_flow_counter(bp);
+               PMD_DRV_LOG(DEBUG, "Successfully created flow.\n");
                return flow;
        }
 
@@ -1832,12 +1966,20 @@ static int bnxt_handle_tunnel_redirect_destroy(struct bnxt *bp,
                /* Tunnel doesn't belong to this VF, so don't send HWRM
                 * cmd, just delete the flow from driver
                 */
-               if (bp->fw_fid != (tun_dst_fid + bp->first_vf_id))
+               if (bp->fw_fid != (tun_dst_fid + bp->first_vf_id)) {
                        PMD_DRV_LOG(ERR,
                                    "Tunnel does not belong to this VF, skip hwrm_tunnel_redirect_free\n");
-               else
+               } else {
                        ret = bnxt_hwrm_tunnel_redirect_free(bp,
                                                        filter->tunnel_type);
+                       if (ret) {
+                               rte_flow_error_set(error, -ret,
+                                                  RTE_FLOW_ERROR_TYPE_HANDLE,
+                                                  NULL,
+                                                  "Unable to free tunnel redirection");
+                               return ret;
+                       }
+               }
        }
        return ret;
 }
@@ -1850,6 +1992,7 @@ _bnxt_flow_destroy(struct bnxt *bp,
        struct bnxt_filter_info *filter;
        struct bnxt_vnic_info *vnic;
        int ret = 0;
+       uint32_t flow_id;
 
        filter = flow->filter;
        vnic = flow->vnic;
@@ -1868,15 +2011,13 @@ _bnxt_flow_destroy(struct bnxt *bp,
                PMD_DRV_LOG(ERR, "Could not find matching flow\n");
 
        if (filter->valid_flags & BNXT_FLOW_MARK_FLAG) {
-               bp->mark_table[filter->flow_id & BNXT_FLOW_ID_MASK] = 0;
+               flow_id = filter->flow_id & BNXT_FLOW_ID_MASK;
+               memset(&bp->mark_table[flow_id], 0,
+                      sizeof(bp->mark_table[flow_id]));
                filter->flow_id = 0;
        }
 
-       if (filter->filter_type == HWRM_CFA_EM_FILTER)
-               ret = bnxt_hwrm_clear_em_filter(bp, filter);
-       if (filter->filter_type == HWRM_CFA_NTUPLE_FILTER)
-               ret = bnxt_hwrm_clear_ntuple_filter(bp, filter);
-       ret = bnxt_hwrm_clear_l2_filter(bp, filter);
+       ret = bnxt_clear_one_vnic_filter(bp, filter);
 
 done:
        if (!ret) {
@@ -1893,18 +2034,16 @@ done:
                bnxt_free_filter(bp, filter);
                STAILQ_REMOVE(&vnic->flow_list, flow, rte_flow, next);
                rte_free(flow);
+               if (BNXT_FLOW_XSTATS_EN(bp))
+                       bp->flow_stat->flow_count--;
 
                /* If this was the last flow associated with this vnic,
                 * switch the queue back to RSS pool.
                 */
                if (vnic && !vnic->func_default &&
                    STAILQ_EMPTY(&vnic->flow_list)) {
-                       rte_free(vnic->fw_grp_ids);
-                       if (vnic->rx_queue_cnt > 1)
-                               bnxt_hwrm_vnic_ctx_free(bp, vnic);
-
-                       bnxt_hwrm_vnic_free(bp, vnic);
-                       vnic->rx_queue_cnt = 0;
+                       bnxt_vnic_cleanup(bp, vnic);
+                       bp->nr_vnics--;
                }
        } else {
                rte_flow_error_set(error, -ret,
@@ -1945,6 +2084,12 @@ bnxt_flow_destroy(struct rte_eth_dev *dev,
        return ret;
 }
 
+void bnxt_cancel_fc_thread(struct bnxt *bp)
+{
+       bp->flags &= ~BNXT_FLAG_FC_THREAD;
+       rte_eal_alarm_cancel(bnxt_flow_cnt_alarm_cb, (void *)bp);
+}
+
 static int
 bnxt_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
 {
@@ -1971,6 +2116,8 @@ bnxt_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
                                break;
                }
        }
+
+       bnxt_cancel_fc_thread(bp);
        bnxt_release_flow_lock(bp);
 
        return ret;