diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vlib/buffer.c | 73 | ||||
| -rw-r--r-- | src/vlib/buffer_funcs.h | 48 | ||||
| -rw-r--r-- | src/vnet/devices/dpdk/buffer.c | 131 |
3 files changed, 78 insertions, 174 deletions
diff --git a/src/vlib/buffer.c b/src/vlib/buffer.c index 0b0e6054ec2..ea4960e2a6a 100644 --- a/src/vlib/buffer.c +++ b/src/vlib/buffer.c @@ -307,10 +307,10 @@ vlib_buffer_validate_alloc_free (vlib_main_t * vm, #define BUFFERS_PER_COPY (sizeof (vlib_copy_unit_t) / sizeof (u32)) /* Make sure we have at least given number of unaligned buffers. */ -static void -fill_unaligned (vlib_main_t * vm, - vlib_buffer_free_list_t * free_list, - uword n_unaligned_buffers) +void +vlib_buffer_free_list_fill_unaligned (vlib_main_t * vm, + vlib_buffer_free_list_t * free_list, + uword n_unaligned_buffers) { word la = vec_len (free_list->aligned_buffers); word lu = vec_len (free_list->unaligned_buffers); @@ -333,8 +333,8 @@ fill_unaligned (vlib_main_t * vm, } /* After free aligned buffers may not contain even sized chunks. */ -static void -trim_aligned (vlib_buffer_free_list_t * f) +void +vlib_buffer_free_list_trim_aligned (vlib_buffer_free_list_t * f) { uword l, n_trim; @@ -361,15 +361,15 @@ trim_aligned (vlib_buffer_free_list_t * f) } } -static void -merge_free_lists (vlib_buffer_free_list_t * dst, - vlib_buffer_free_list_t * src) +void +vlib_buffer_merge_free_lists (vlib_buffer_free_list_t * dst, + vlib_buffer_free_list_t * src) { uword l; u32 *d; - trim_aligned (src); - trim_aligned (dst); + vlib_buffer_free_list_trim_aligned (src); + vlib_buffer_free_list_trim_aligned (dst); l = vec_len (src->aligned_buffers); if (l > 0) @@ -388,16 +388,6 @@ merge_free_lists (vlib_buffer_free_list_t * dst, } } -always_inline u32 -vlib_buffer_get_free_list_with_size (vlib_main_t * vm, u32 size) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - - size = vlib_buffer_round_size (size); - uword *p = hash_get (bm->free_list_by_size, size); - return p ? p[0] : ~0; -} - /* Add buffer free list. */ static u32 vlib_buffer_create_free_list_helper (vlib_main_t * vm, @@ -537,8 +527,9 @@ vlib_buffer_delete_free_list_internal (vlib_main_t * vm, u32 free_list_index) merge_index = vlib_buffer_get_free_list_with_size (vm, f->n_data_bytes); if (merge_index != ~0 && merge_index != free_list_index) { - merge_free_lists (pool_elt_at_index (bm->buffer_free_list_pool, - merge_index), f); + vlib_buffer_merge_free_lists (pool_elt_at_index + (bm->buffer_free_list_pool, merge_index), + f); } del_free_list (vm, f); @@ -567,7 +558,7 @@ fill_free_list (vlib_main_t * vm, u32 *bi; u32 n_remaining, n_alloc, n_this_chunk; - trim_aligned (fl); + vlib_buffer_free_list_trim_aligned (fl); /* Already have enough free buffers on free list? */ n = min_free_buffers - vec_len (fl->aligned_buffers); @@ -666,7 +657,8 @@ alloc_from_free_list (vlib_main_t * vm, else n_unaligned_end = copy_alignment (dst + n_alloc_buffers); - fill_unaligned (vm, free_list, n_unaligned_start + n_unaligned_end); + vlib_buffer_free_list_fill_unaligned (vm, free_list, + n_unaligned_start + n_unaligned_end); u_len = vec_len (free_list->unaligned_buffers); u_src = free_list->unaligned_buffers + u_len - 1; @@ -779,29 +771,6 @@ vlib_buffer_alloc_from_free_list_internal (vlib_main_t * vm, return alloc_from_free_list (vm, f, buffers, n_buffers); } -always_inline void -add_buffer_to_free_list (vlib_main_t * vm, - vlib_buffer_free_list_t * f, - u32 buffer_index, u8 do_init) -{ - vlib_buffer_t *b; - b = vlib_get_buffer (vm, buffer_index); - if (PREDICT_TRUE (do_init)) - vlib_buffer_init_for_free_list (b, f); - vec_add1_aligned (f->aligned_buffers, buffer_index, - sizeof (vlib_copy_unit_t)); -} - -always_inline vlib_buffer_free_list_t * -buffer_get_free_list (vlib_main_t * vm, vlib_buffer_t * b, u32 * index) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - u32 i; - - *index = i = b->free_list_index; - return pool_elt_at_index (bm->buffer_free_list_pool, i); -} - void * vlib_set_buffer_free_callback (vlib_main_t * vm, void *fp) { @@ -845,7 +814,7 @@ vlib_buffer_free_inline (vlib_main_t * vm, vlib_buffer_t *b0; b0 = vlib_get_buffer (vm, bi0); - fl = buffer_get_free_list (vm, b0, &fi); + fl = vlib_buffer_get_buffer_free_list (vm, b0, &fi); if (fl->buffers_added_to_freelist_function) vec_add1 (announce_list, fl); } @@ -926,7 +895,7 @@ again: fl0 = pool_elt_at_index (bm->buffer_free_list_pool, fi0); fl1 = pool_elt_at_index (bm->buffer_free_list_pool, fi1); - add_buffer_to_free_list (vm, fl0, bi0, free0); + vlib_buffer_add_to_free_list (vm, fl0, bi0, free0); if (PREDICT_FALSE (fl0->buffers_added_to_freelist_function != 0)) { int i; @@ -946,7 +915,7 @@ again: } no_fl1: - add_buffer_to_free_list (vm, fl1, bi1, free1); + vlib_buffer_add_to_free_list (vm, fl1, bi1, free1); /* Possibly change current free list. */ if (fi0 != fi && fi1 != fi) @@ -1003,7 +972,7 @@ again: fl0 = pool_elt_at_index (bm->buffer_free_list_pool, fi0); - add_buffer_to_free_list (vm, fl0, bi0, free0); + vlib_buffer_add_to_free_list (vm, fl0, bi0, free0); if (PREDICT_FALSE (fl0->buffers_added_to_freelist_function != 0)) { int i; diff --git a/src/vlib/buffer_funcs.h b/src/vlib/buffer_funcs.h index 15d93c1657f..543a903c54d 100644 --- a/src/vlib/buffer_funcs.h +++ b/src/vlib/buffer_funcs.h @@ -350,6 +350,41 @@ vlib_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index) u32 vlib_buffer_get_or_create_free_list (vlib_main_t * vm, u32 n_data_bytes, char *fmt, ...); + +/* After free aligned buffers may not contain even sized chunks. */ +void vlib_buffer_free_list_trim_aligned (vlib_buffer_free_list_t * f); + +/* Merge two free lists */ +void vlib_buffer_merge_free_lists (vlib_buffer_free_list_t * dst, + vlib_buffer_free_list_t * src); + +/* Make sure we have at least given number of unaligned buffers. */ +void vlib_buffer_free_list_fill_unaligned (vlib_main_t * vm, + vlib_buffer_free_list_t * + free_list, + uword n_unaligned_buffers); + +always_inline u32 +vlib_buffer_get_free_list_with_size (vlib_main_t * vm, u32 size) +{ + vlib_buffer_main_t *bm = vm->buffer_main; + + size = vlib_buffer_round_size (size); + uword *p = hash_get (bm->free_list_by_size, size); + return p ? p[0] : ~0; +} + +always_inline vlib_buffer_free_list_t * +vlib_buffer_get_buffer_free_list (vlib_main_t * vm, vlib_buffer_t * b, + u32 * index) +{ + vlib_buffer_main_t *bm = vm->buffer_main; + u32 i; + + *index = i = b->free_list_index; + return pool_elt_at_index (bm->buffer_free_list_pool, i); +} + always_inline vlib_buffer_free_list_t * vlib_buffer_get_free_list (vlib_main_t * vm, u32 free_list_index) { @@ -675,6 +710,19 @@ vlib_buffer_init_for_free_list (vlib_buffer_t * _dst, } always_inline void +vlib_buffer_add_to_free_list (vlib_main_t * vm, + vlib_buffer_free_list_t * f, + u32 buffer_index, u8 do_init) +{ + vlib_buffer_t *b; + b = vlib_get_buffer (vm, buffer_index); + if (PREDICT_TRUE (do_init)) + vlib_buffer_init_for_free_list (b, f); + vec_add1_aligned (f->aligned_buffers, buffer_index, + sizeof (vlib_copy_unit_t)); +} + +always_inline void vlib_buffer_init_two_for_free_list (vlib_buffer_t * _dst0, vlib_buffer_t * _dst1, vlib_buffer_free_list_t * fl) diff --git a/src/vnet/devices/dpdk/buffer.c b/src/vnet/devices/dpdk/buffer.c index 214a916263c..038f46d9859 100644 --- a/src/vnet/devices/dpdk/buffer.c +++ b/src/vnet/devices/dpdk/buffer.c @@ -81,98 +81,6 @@ STATIC_ASSERT (VLIB_BUFFER_PRE_DATA_SIZE == RTE_PKTMBUF_HEADROOM, #define BUFFERS_PER_COPY (sizeof (vlib_copy_unit_t) / sizeof (u32)) -/* Make sure we have at least given number of unaligned buffers. */ -static void -fill_unaligned (vlib_main_t * vm, - vlib_buffer_free_list_t * free_list, - uword n_unaligned_buffers) -{ - word la = vec_len (free_list->aligned_buffers); - word lu = vec_len (free_list->unaligned_buffers); - - /* Aligned come in aligned copy-sized chunks. */ - ASSERT (la % BUFFERS_PER_COPY == 0); - - ASSERT (la >= n_unaligned_buffers); - - while (lu < n_unaligned_buffers) - { - /* Copy 4 buffers from end of aligned vector to unaligned vector. */ - vec_add (free_list->unaligned_buffers, - free_list->aligned_buffers + la - BUFFERS_PER_COPY, - BUFFERS_PER_COPY); - la -= BUFFERS_PER_COPY; - lu += BUFFERS_PER_COPY; - } - _vec_len (free_list->aligned_buffers) = la; -} - -/* After free aligned buffers may not contain even sized chunks. */ -static void -trim_aligned (vlib_buffer_free_list_t * f) -{ - uword l, n_trim; - - /* Add unaligned to aligned before trim. */ - l = vec_len (f->unaligned_buffers); - if (l > 0) - { - vec_add_aligned (f->aligned_buffers, f->unaligned_buffers, l, - /* align */ sizeof (vlib_copy_unit_t)); - - _vec_len (f->unaligned_buffers) = 0; - } - - /* Remove unaligned buffers from end of aligned vector and save for next trim. */ - l = vec_len (f->aligned_buffers); - n_trim = l % BUFFERS_PER_COPY; - if (n_trim) - { - /* Trim aligned -> unaligned. */ - vec_add (f->unaligned_buffers, f->aligned_buffers + l - n_trim, n_trim); - - /* Remove from aligned. */ - _vec_len (f->aligned_buffers) = l - n_trim; - } -} - -static void -merge_free_lists (vlib_buffer_free_list_t * dst, - vlib_buffer_free_list_t * src) -{ - uword l; - u32 *d; - - trim_aligned (src); - trim_aligned (dst); - - l = vec_len (src->aligned_buffers); - if (l > 0) - { - vec_add2_aligned (dst->aligned_buffers, d, l, - /* align */ sizeof (vlib_copy_unit_t)); - clib_memcpy (d, src->aligned_buffers, l * sizeof (d[0])); - vec_free (src->aligned_buffers); - } - - l = vec_len (src->unaligned_buffers); - if (l > 0) - { - vec_add (dst->unaligned_buffers, src->unaligned_buffers, l); - vec_free (src->unaligned_buffers); - } -} - -always_inline u32 -dpdk_buffer_get_free_list_with_size (vlib_main_t * vm, u32 size) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - - size = vlib_buffer_round_size (size); - uword *p = hash_get (bm->free_list_by_size, size); - return p ? p[0] : ~0; -} - static void del_free_list (vlib_main_t * vm, vlib_buffer_free_list_t * f) { @@ -212,11 +120,12 @@ dpdk_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index) f = vlib_buffer_get_free_list (vm, free_list_index); - merge_index = dpdk_buffer_get_free_list_with_size (vm, f->n_data_bytes); + merge_index = vlib_buffer_get_free_list_with_size (vm, f->n_data_bytes); if (merge_index != ~0 && merge_index != free_list_index) { - merge_free_lists (pool_elt_at_index (bm->buffer_free_list_pool, - merge_index), f); + vlib_buffer_merge_free_lists (pool_elt_at_index + (bm->buffer_free_list_pool, merge_index), + f); } del_free_list (vm, f); @@ -253,7 +162,7 @@ fill_free_list (vlib_main_t * vm, if (PREDICT_FALSE (rmp == 0)) return 0; - trim_aligned (fl); + vlib_buffer_free_list_trim_aligned (fl); /* Already have enough free buffers on free list? */ n = min_free_buffers - vec_len (fl->aligned_buffers); @@ -333,7 +242,8 @@ alloc_from_free_list (vlib_main_t * vm, else n_unaligned_end = copy_alignment (dst + n_alloc_buffers); - fill_unaligned (vm, free_list, n_unaligned_start + n_unaligned_end); + vlib_buffer_free_list_fill_unaligned (vm, free_list, + n_unaligned_start + n_unaligned_end); u_len = vec_len (free_list->unaligned_buffers); u_src = free_list->unaligned_buffers + u_len - 1; @@ -442,29 +352,6 @@ dpdk_buffer_alloc_from_free_list (vlib_main_t * vm, return alloc_from_free_list (vm, f, buffers, n_buffers); } -always_inline void -add_buffer_to_free_list (vlib_main_t * vm, - vlib_buffer_free_list_t * f, - u32 buffer_index, u8 do_init) -{ - vlib_buffer_t *b; - b = vlib_get_buffer (vm, buffer_index); - if (PREDICT_TRUE (do_init)) - vlib_buffer_init_for_free_list (b, f); - vec_add1_aligned (f->aligned_buffers, buffer_index, - sizeof (vlib_copy_unit_t)); -} - -always_inline vlib_buffer_free_list_t * -buffer_get_free_list (vlib_main_t * vm, vlib_buffer_t * b, u32 * index) -{ - vlib_buffer_main_t *bm = vm->buffer_main; - u32 i; - - *index = i = b->free_list_index; - return pool_elt_at_index (bm->buffer_free_list_pool, i); -} - static_always_inline void vlib_buffer_free_inline (vlib_main_t * vm, u32 * buffers, u32 n_buffers, u32 follow_buffer_next) @@ -491,14 +378,14 @@ vlib_buffer_free_inline (vlib_main_t * vm, b = vlib_get_buffer (vm, buffers[i]); - fl = buffer_get_free_list (vm, b, &fi); + fl = vlib_buffer_get_buffer_free_list (vm, b, &fi); /* The only current use of this callback: multicast recycle */ if (PREDICT_FALSE (fl->buffers_added_to_freelist_function != 0)) { int j; - add_buffer_to_free_list + vlib_buffer_add_to_free_list (vm, fl, buffers[i], (b->flags & VLIB_BUFFER_RECYCLE) == 0); for (j = 0; j < vec_len (bm->announce_list); j++) |