ligang/vpp
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

virtio: use fast-path for ethernet-input if possible

Browse Source 
If a frame should be sent to 'ethernet-input' set the
ETH_INPUT_FRAME_F_SINGLE_SW_IF_IDX flag. It will force 'ethernet-input'
to use a fast-path for such frames.
This patch also aligns the behaviour with other input nodes.

Type: improvement

Change-Id: Icff0fa31204d5304a2ea0a4f4e7bc418dedbfe32
Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com>
This commit is contained in:
Stanislav Zaikin
2022-05-05 12:04:39 +02:00
committed by Beno�t Ganne
parent d96859f09b
commit 5fe1cf80ca
1 changed files with 26 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
src/vnet/devices/virtio/node.c
View File

@ -214,6 +214,29 @@ virtio_get_len (vnet_virtio_vring_t *vring, const int packed, const int hdr_sz,
} \
while (0)
static_always_inline void
virtio_device_input_ethernet (vlib_main_t *vm, vlib_node_runtime_t *node,
const u32 next_index, const u32 sw_if_index,
const u32 hw_if_index)
{
vlib_next_frame_t *nf;
vlib_frame_t *f;
ethernet_input_frame_t *ef;
if (PREDICT_FALSE (VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT != next_index))
return;
nf = vlib_node_runtime_get_next_frame (
vm, node, VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT);
f = vlib_get_frame (vm, nf->frame);
f->flags = ETH_INPUT_FRAME_F_SINGLE_SW_IF_IDX;
ef = vlib_frame_scalar_args (f);
ef->sw_if_index = sw_if_index;
ef->hw_if_index = hw_if_index;
vlib_frame_no_append (f);
}
static_always_inline uword
virtio_device_input_gso_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
vlib_frame_t *frame, virtio_if_t *vif,
@ -256,7 +279,7 @@ virtio_device_input_gso_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
u32 n_left_to_next;
u32 next0 = next_index;
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
vlib_get_new_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left && n_left_to_next)
{
@ -386,6 +409,8 @@ virtio_device_input_gso_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
n_rx_packets++;
n_rx_bytes += len;
}
virtio_device_input_ethernet (vm, node, next_index, vif->sw_if_index,
vif->hw_if_index);
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
vring->last_used_idx = last;