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authorDamjan Marion <damarion@cisco.com>2017-11-24 20:15:23 +0100
committerDave Barach <openvpp@barachs.net>2017-11-27 14:53:23 +0000
commitc8a26c6d239554bac96c481c840b3f5b3d8a17af (patch)
tree4ad52a5fd5bbbd7c3dd1ca976d5cd9e9b2c03cd5 /src/plugins/dpdk/buffer.c
parent8b9a5d198cc316d36b93f19fee7a351fc3922e4a (diff)
vlib: make vlib_buffer_alloc inline function
Currently, every alloc involves callback function call. With this change callback function is called only if there is no empty buffers on the free list. Change-Id: I2238c19ece7ce182c49ba0f2485add52f335f3b6 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins/dpdk/buffer.c')
-rw-r--r--src/plugins/dpdk/buffer.c84
1 files changed, 11 insertions, 73 deletions
diff --git a/src/plugins/dpdk/buffer.c b/src/plugins/dpdk/buffer.c
index 3ac9c69a9d2..235a130d937 100644
--- a/src/plugins/dpdk/buffer.c
+++ b/src/plugins/dpdk/buffer.c
@@ -196,9 +196,10 @@ dpdk_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index)
#endif
/* Make sure free list has at least given number of free buffers. */
-static uword
-fill_free_list (vlib_main_t * vm,
- vlib_buffer_free_list_t * fl, uword min_free_buffers)
+uword
+CLIB_MULTIARCH_FN (dpdk_buffer_fill_free_list) (vlib_main_t * vm,
+ vlib_buffer_free_list_t * fl,
+ uword min_free_buffers)
{
dpdk_main_t *dm = &dpdk_main;
vlib_buffer_t *b0, *b1, *b2, *b3;
@@ -303,60 +304,6 @@ fill_free_list (vlib_main_t * vm,
return n;
}
-static u32
-alloc_from_free_list (vlib_main_t * vm,
- vlib_buffer_free_list_t * free_list,
- u32 * alloc_buffers, u32 n_alloc_buffers)
-{
- u32 *dst, *src;
- uword len, n_filled;
-
- dst = alloc_buffers;
-
- n_filled = fill_free_list (vm, free_list, n_alloc_buffers);
- if (n_filled == 0)
- return 0;
-
- len = vec_len (free_list->buffers);
- ASSERT (len >= n_alloc_buffers);
-
- src = free_list->buffers + len - n_alloc_buffers;
- clib_memcpy (dst, src, n_alloc_buffers * sizeof (u32));
-
- _vec_len (free_list->buffers) -= n_alloc_buffers;
-
- return n_alloc_buffers;
-}
-
-/* Allocate a given number of buffers into given array.
- Returns number actually allocated which will be either zero or
- number requested. */
-u32
-CLIB_MULTIARCH_FN (dpdk_buffer_alloc) (vlib_main_t * vm, u32 * buffers,
- u32 n_buffers)
-{
- vlib_buffer_main_t *bm = vm->buffer_main;
-
- return alloc_from_free_list
- (vm,
- pool_elt_at_index (bm->buffer_free_list_pool,
- VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX),
- buffers, n_buffers);
-}
-
-
-u32
-CLIB_MULTIARCH_FN (dpdk_buffer_alloc_from_free_list) (vlib_main_t * vm,
- u32 * buffers,
- u32 n_buffers,
- u32 free_list_index)
-{
- vlib_buffer_main_t *bm = vm->buffer_main;
- vlib_buffer_free_list_t *f;
- f = pool_elt_at_index (bm->buffer_free_list_pool, free_list_index);
- return alloc_from_free_list (vm, f, buffers, n_buffers);
-}
-
static_always_inline void
dpdk_prefetch_buffer_by_index (vlib_main_t * vm, u32 bi)
{
@@ -733,8 +680,7 @@ VLIB_INIT_FUNCTION (dpdk_buffer_init);
/* *INDENT-OFF* */
VLIB_BUFFER_REGISTER_CALLBACKS (dpdk, static) = {
- .vlib_buffer_alloc_cb = &dpdk_buffer_alloc,
- .vlib_buffer_alloc_from_free_list_cb = &dpdk_buffer_alloc_from_free_list,
+ .vlib_buffer_fill_free_list_cb = &dpdk_buffer_fill_free_list,
.vlib_buffer_free_cb = &dpdk_buffer_free,
.vlib_buffer_free_no_next_cb = &dpdk_buffer_free_no_next,
.vlib_packet_template_init_cb = &dpdk_packet_template_init,
@@ -743,12 +689,8 @@ VLIB_BUFFER_REGISTER_CALLBACKS (dpdk, static) = {
/* *INDENT-ON* */
#if __x86_64__
-vlib_buffer_alloc_cb_t __clib_weak dpdk_buffer_alloc_avx512;
-vlib_buffer_alloc_cb_t __clib_weak dpdk_buffer_alloc_avx2;
-vlib_buffer_alloc_from_free_list_cb_t __clib_weak
- dpdk_buffer_alloc_from_free_list_avx512;
-vlib_buffer_alloc_from_free_list_cb_t __clib_weak
- dpdk_buffer_alloc_from_free_list_avx2;
+vlib_buffer_fill_free_list_cb_t __clib_weak dpdk_buffer_fill_free_list_avx512;
+vlib_buffer_fill_free_list_cb_t __clib_weak dpdk_buffer_fill_free_list_avx2;
vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx512;
vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx2;
vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx512;
@@ -758,19 +700,15 @@ static void __clib_constructor
dpdk_input_multiarch_select (void)
{
vlib_buffer_callbacks_t *cb = &__dpdk_buffer_callbacks;
- if (dpdk_buffer_alloc_avx512 && clib_cpu_supports_avx512f ())
+ if (dpdk_buffer_fill_free_list_avx512 && clib_cpu_supports_avx512f ())
{
- cb->vlib_buffer_alloc_cb = dpdk_buffer_alloc_avx512;
- cb->vlib_buffer_alloc_from_free_list_cb =
- dpdk_buffer_alloc_from_free_list_avx512;
+ cb->vlib_buffer_fill_free_list_cb = dpdk_buffer_fill_free_list_avx512;
cb->vlib_buffer_free_cb = dpdk_buffer_free_avx512;
cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx512;
}
- else if (dpdk_buffer_alloc_avx2 && clib_cpu_supports_avx2 ())
+ else if (dpdk_buffer_fill_free_list_avx2 && clib_cpu_supports_avx2 ())
{
- cb->vlib_buffer_alloc_cb = dpdk_buffer_alloc_avx2;
- cb->vlib_buffer_alloc_from_free_list_cb =
- dpdk_buffer_alloc_from_free_list_avx2;
+ cb->vlib_buffer_fill_free_list_cb = dpdk_buffer_fill_free_list_avx2;
cb->vlib_buffer_free_cb = dpdk_buffer_free_avx2;
cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx2;
}