vlib: convert frame_index into real pointers
The fast path almost always has to deal with the real
pointers. Deriving the frame pointer from a frame_index requires a
load of the 32bit frame_index from memory, another 64bit load of the
heap base pointer and some calculations.
Lets store the full pointer instead and do a single 64bit load only.
This helps avoiding problems when the heap is grown and frames are
allocated below vm->heap_aligned_base.
Type: refactor
Change-Id: Ifa6e6e984aafe1e2755bff80f0a4dfcddee3623c
Signed-off-by: Andreas Schultz <andreas.schultz@travelping.com>
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/src/vnet/devices/virtio/vhost_user_input.c b/src/vnet/devices/virtio/vhost_user_input.c
index 79c66ee..c4ea328 100644
--- a/src/vnet/devices/virtio/vhost_user_input.c
+++ b/src/vnet/devices/virtio/vhost_user_input.c
@@ -397,7 +397,7 @@
vlib_frame_t *f;
ethernet_input_frame_t *ef;
nf = vlib_node_runtime_get_next_frame (vm, node, next_index);
- f = vlib_get_frame (vm, nf->frame_index);
+ f = vlib_get_frame (vm, nf->frame);
f->flags = ETH_INPUT_FRAME_F_SINGLE_SW_IF_IDX;
ef = vlib_frame_scalar_args (f);