net: ena: remove old adaptive interrupt moderation code from ena_netdev

1. Out of the fields {per_napi_bytes, per_napi_packets} in struct ena_ring,
   only rx_ring->per_napi_packets are used to determine if napi did work
   for dim.
   This commit removes all other uses of these fields.
2. Remove ena_ring->moder_tbl_idx, which is not used by dim.
3. Remove all calls to ena_com_destroy_interrupt_moderation(), since all it
   did was to destroy the interrupt moderation table, which is removed as
   part of removing old interrupt moderation code.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gbp-Pq: Topic features/all/ena
Gbp-Pq: Name 0007-net-ena-remove-old-adaptive-interrupt-moderation-cod.patch

diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index f42ca36fddc0688a84e5288ff291e7423302246d..9d03382ec3fe28442b2f13335329a695e6f71c0b 100644 (file)
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -158,7 +158,6 @@ static void ena_init_io_rings_common(struct ena_adapter *adapter,
        ring->adapter = adapter;
        ring->ena_dev = adapter->ena_dev;
        ring->per_napi_packets = 0;
-       ring->per_napi_bytes = 0;
        ring->cpu = 0;
        ring->first_interrupt = false;
        ring->no_interrupt_event_cnt = 0;
@@ -835,9 +834,6 @@ static int ena_clean_tx_irq(struct ena_ring *tx_ring, u32 budget)
                __netif_tx_unlock(txq);
        }
 
-       tx_ring->per_napi_bytes += tx_bytes;
-       tx_ring->per_napi_packets += tx_pkts;
-
        return tx_pkts;
 }
 
@@ -1121,7 +1117,6 @@ static int ena_clean_rx_irq(struct ena_ring *rx_ring, struct napi_struct *napi,
        } while (likely(res_budget));
 
        work_done = budget - res_budget;
-       rx_ring->per_napi_bytes += total_len;
        rx_ring->per_napi_packets += work_done;
        u64_stats_update_begin(&rx_ring->syncp);
        rx_ring->rx_stats.bytes += total_len;
@@ -3642,7 +3637,6 @@ err_free_msix:
        ena_free_mgmnt_irq(adapter);
        ena_disable_msix(adapter);
 err_worker_destroy:
-       ena_com_destroy_interrupt_moderation(ena_dev);
        del_timer(&adapter->timer_service);
 err_netdev_destroy:
        free_netdev(netdev);
@@ -3703,8 +3697,6 @@ static void ena_remove(struct pci_dev *pdev)
 
        pci_disable_device(pdev);
 
-       ena_com_destroy_interrupt_moderation(ena_dev);
-
        vfree(ena_dev);
 }
 

diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h
index f67ecab3389ad4da2a2f15084ec1bf30627e88a6..e9450991ab74ef26726d3f5d679cae37b7ce50f3 100644 (file)
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.h
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h
@@ -280,8 +280,6 @@ struct ena_ring {
        struct ena_com_rx_buf_info ena_bufs[ENA_PKT_MAX_BUFS];
        u32  smoothed_interval;
        u32  per_napi_packets;
-       u32  per_napi_bytes;
-       enum ena_intr_moder_level moder_tbl_idx;
        u16 non_empty_napi_events;
        struct u64_stats_sync syncp;
        union {