diff options
| author | Shay Agroskin <shayagr@amazon.com> | 2023-03-23 18:36:09 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-03-27 19:49:59 -0700 |
| commit | b0c59e53968b55f6add088319bd31ca7dcdd8484 (patch) | |
| tree | db900ce94f2895732be5ed71aa42e4c37a0f3fc5 /drivers/net/ethernet/amazon/ena/ena_netdev.c | |
| parent | a416cb254d35d1e53ab3d4cbb81ea3835e5a10fd (diff) | |
net: ena: Add support to changing tx_push_buf_len
The ENA driver allows for two distinct values for the number of bytes
of the packet's payload that can be written directly to the device.
For a value of 224 the driver turns on Large LLQ Header mode in which
the first 224 of the packet's payload are written to the LLQ.
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/amazon/ena/ena_netdev.c')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index ed5b019d27ea..e0588a82c8e5 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -2809,11 +2809,13 @@ static int ena_close(struct net_device *netdev) return 0; } -int ena_update_queue_sizes(struct ena_adapter *adapter, - u32 new_tx_size, - u32 new_rx_size) +int ena_update_queue_params(struct ena_adapter *adapter, + u32 new_tx_size, + u32 new_rx_size, + u32 new_llq_header_len) { - bool dev_was_up; + bool dev_was_up, large_llq_changed = false; + int rc = 0; dev_was_up = test_bit(ENA_FLAG_DEV_UP, &adapter->flags); ena_close(adapter->netdev); @@ -2823,7 +2825,21 @@ int ena_update_queue_sizes(struct ena_adapter *adapter, 0, adapter->xdp_num_queues + adapter->num_io_queues); - return dev_was_up ? ena_up(adapter) : 0; + + large_llq_changed = adapter->ena_dev->tx_mem_queue_type == + ENA_ADMIN_PLACEMENT_POLICY_DEV; + large_llq_changed &= + new_llq_header_len != adapter->ena_dev->tx_max_header_size; + + /* a check that the configuration is valid is done by caller */ + if (large_llq_changed) { + adapter->large_llq_header_enabled = !adapter->large_llq_header_enabled; + + ena_destroy_device(adapter, false); + rc = ena_restore_device(adapter); + } + + return dev_was_up && !rc ? ena_up(adapter) : rc; } int ena_set_rx_copybreak(struct ena_adapter *adapter, u32 rx_copybreak) |