diff options
| author |   Damjan Marion <damarion@cisco.com> | 2018-11-21 09:51:42 +0100 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2018-11-22 19:08:08 +0000 |
| commit | 9af4504db1f5d6f5562d8445ab325989b968cf12 (patch) | |
| tree | 130a90523ce22b843428be61bdf0ec3b9cf7c01a /src | |
| parent | befe691f4c30c8a16cb23fe97c62770e44b56c03 (diff) | |
vhost-user: avoid per-packet feature arc lookups
Change-Id: If96f5a7c7e4b511cab3d57e5b57796aa516aff11
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/vnet/devices/virtio/vhost_user_input.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/src/vnet/devices/virtio/vhost_user_input.c b/src/vnet/devices/virtio/vhost_user_input.c index 6c3f6aad55c..97f6792354a 100644 --- a/src/vnet/devices/virtio/vhost_user_input.c +++ b/src/vnet/devices/virtio/vhost_user_input.c @@ -249,6 +249,7 @@ vhost_user_if_input (vlib_main_t * vm, vnet_hw_interface_rx_mode mode) { vhost_user_vring_t *txvq = &vui->vrings[VHOST_VRING_IDX_TX (qid)]; + vnet_feature_main_t *fm = &feature_main; u16 n_rx_packets = 0; u32 n_rx_bytes = 0; u16 n_left; @@ -258,6 +259,8 @@ vhost_user_if_input (vlib_main_t * vm, u32 map_hint = 0; vhost_cpu_t *cpu = &vum->cpus[vm->thread_index]; u16 copy_len = 0; + u8 feature_arc_idx = fm->device_input_feature_arc_index; + u32 current_config_index = ~(u32) 0; /* The descriptor table is not ready yet */ if (PREDICT_FALSE (txvq->avail == 0)) @@ -369,6 +372,16 @@ vhost_user_if_input (vlib_main_t * vm, } } + if (PREDICT_FALSE (vnet_have_features (feature_arc_idx, vui->sw_if_index))) + { + vnet_feature_config_main_t *cm; + cm = &fm->feature_config_mains[feature_arc_idx]; + current_config_index = vec_elt (cm->config_index_by_sw_if_index, + vui->sw_if_index); + vnet_get_config_data (&cm->config_main, ¤t_config_index, + &next_index, 0); + } + while (n_left > 0) { vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); @@ -539,18 +552,11 @@ vhost_user_if_input (vlib_main_t * vm, vnet_buffer (b_head)->sw_if_index[VLIB_TX] = (u32) ~ 0; b_head->error = 0; - { - u32 next0 = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; - - /* redirect if feature path enabled */ - vnet_feature_start_device_input_x1 (vui->sw_if_index, &next0, - b_head); - - u32 bi = to_next[-1]; //Cannot use to_next[-1] in the macro - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi, next0); - } + if (current_config_index != ~(u32) 0) + { + b_head->current_config_index = current_config_index; + vnet_buffer (b_head)->feature_arc_index = feature_arc_idx; + } n_left--; |