diff options
| author |   Florin Coras <fcoras@cisco.com> | 2021-03-19 13:12:41 -0700 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2021-03-23 19:58:06 +0000 |
| commit | 982e44fcc482cc9bc08e46c2a36ab66b0861bacb (patch) | |
| tree | 7f1ad87cd446a6a5db831c947e007d889b6ce1ba /src/vnet/interface | |
| parent | 3853b26c5d8db27df6e2f00539bf021e565614ac (diff) | |
vlib: add node adaptive mode flag
Don't switch nodes from interrupt to polling state unless adaptive mode
flag set. For starters, flag set only on interface input nodes
with no polling rx queue and at least one in adaptive mode.
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ica1c75f605ead82b7cf74c45c6a774461008f054
Diffstat (limited to 'src/vnet/interface')
| -rw-r--r-- | src/vnet/interface/runtime.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/vnet/interface/runtime.c b/src/vnet/interface/runtime.c index 019d3ee28d0..c7631272d00 100644 --- a/src/vnet/interface/runtime.c +++ b/src/vnet/interface/runtime.c @@ -64,6 +64,7 @@ vnet_hw_if_update_runtime_data (vnet_main_t *vnm, u32 hw_if_index) vnet_hw_if_rxq_poll_vector_t *pv, **d = 0; vlib_node_state_t *per_thread_node_state = 0; u32 n_threads = vec_len (vlib_mains); + u16 *per_thread_node_adaptive = 0; int something_changed = 0; clib_bitmap_t *pending_int = 0; int last_int = -1; @@ -74,6 +75,7 @@ vnet_hw_if_update_runtime_data (vnet_main_t *vnm, u32 hw_if_index) vec_validate (d, n_threads - 1); vec_validate_init_empty (per_thread_node_state, n_threads - 1, VLIB_NODE_STATE_DISABLED); + vec_validate_init_empty (per_thread_node_adaptive, n_threads - 1, 0); /* find out desired node state on each thread */ pool_foreach (rxq, im->hw_if_rx_queues) @@ -89,7 +91,10 @@ vnet_hw_if_update_runtime_data (vnet_main_t *vnm, u32 hw_if_index) continue; if (rxq->mode == VNET_HW_IF_RX_MODE_POLLING) - per_thread_node_state[ti] = VLIB_NODE_STATE_POLLING; + { + per_thread_node_state[ti] = VLIB_NODE_STATE_POLLING; + per_thread_node_adaptive[ti] = 0; + } if (per_thread_node_state[ti] == VLIB_NODE_STATE_POLLING) continue; @@ -97,6 +102,9 @@ vnet_hw_if_update_runtime_data (vnet_main_t *vnm, u32 hw_if_index) if (rxq->mode == VNET_HW_IF_RX_MODE_INTERRUPT || rxq->mode == VNET_HW_IF_RX_MODE_ADAPTIVE) per_thread_node_state[ti] = VLIB_NODE_STATE_INTERRUPT; + + if (rxq->mode == VNET_HW_IF_RX_MODE_ADAPTIVE) + per_thread_node_adaptive[ti] = 1; } /* construct per-thread polling vectors */ @@ -190,6 +198,8 @@ vnet_hw_if_update_runtime_data (vnet_main_t *vnm, u32 hw_if_index) } vlib_node_set_state (vm, node_index, per_thread_node_state[i]); + vlib_node_set_flag (vm, node_index, VLIB_NODE_FLAG_ADAPTIVE_MODE, + per_thread_node_adaptive[i]); if (last_int >= 0) clib_interrupt_resize (&rt->rxq_interrupts, last_int + 1); @@ -219,4 +229,5 @@ vnet_hw_if_update_runtime_data (vnet_main_t *vnm, u32 hw_if_index) vec_free (d); vec_free (per_thread_node_state); + vec_free (per_thread_node_adaptive); } |