diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vppinfra/fifo.c | 12 | ||||
| -rw-r--r-- | src/vppinfra/vec.c | 13 | ||||
| -rw-r--r-- | src/vppinfra/vec_bootstrap.h | 9 |
3 files changed, 24 insertions, 10 deletions
diff --git a/src/vppinfra/fifo.c b/src/vppinfra/fifo.c index 52d65ae1f37..1ef1754bbbf 100644 --- a/src/vppinfra/fifo.c +++ b/src/vppinfra/fifo.c @@ -79,8 +79,9 @@ __clib_export void * _clib_fifo_resize (void *v_old, uword n_new_elts, uword elt_bytes) { - void *v_new, *end, *head; - uword n_old_elts, header_bytes; + void *end, *head; + u8 *v_new = 0; + uword n_old_elts; uword n_copy_bytes, n_zero_bytes; clib_fifo_header_t *f_new, *f_old; @@ -91,15 +92,12 @@ _clib_fifo_resize (void *v_old, uword n_new_elts, uword elt_bytes) else n_new_elts = max_pow2 (n_new_elts); - header_bytes = vec_header_bytes (sizeof (clib_fifo_header_t)); - - v_new = clib_mem_alloc_no_fail (n_new_elts * elt_bytes + header_bytes); - v_new += header_bytes; + vec_alloc_ha (v_new, n_new_elts * elt_bytes, sizeof (clib_fifo_header_t), 0); + _vec_len (v_new) = n_new_elts; f_new = clib_fifo_header (v_new); f_new->head_index = 0; f_new->tail_index = n_old_elts; - _vec_len (v_new) = n_new_elts; /* Copy old -> new. */ n_copy_bytes = n_old_elts * elt_bytes; diff --git a/src/vppinfra/vec.c b/src/vppinfra/vec.c index 970f7f7bfa8..97e2762ecbf 100644 --- a/src/vppinfra/vec.c +++ b/src/vppinfra/vec.c @@ -57,6 +57,7 @@ vec_resize_allocate_memory (void *v, void *oldheap; header_bytes = vec_header_bytes (header_bytes); + data_align = data_align == 0 ? 1 : data_align; data_bytes += header_bytes; @@ -66,6 +67,9 @@ vec_resize_allocate_memory (void *v, clib_mem_set_per_cpu_heap (clib_mem_get_per_numa_heap (numa_id)); } + /* alignment must be power of 2 */ + ASSERT (count_set_bits (data_align) == 1); + if (!v) { new = clib_mem_alloc_aligned_at_offset (data_bytes, data_align, header_bytes, 1 /* yes, call os_out_of_memory */ @@ -77,11 +81,20 @@ vec_resize_allocate_memory (void *v, v = new + header_bytes; _vec_len (v) = length_increment; _vec_numa (v) = numa_id; + ASSERT (header_bytes / VEC_HEADER_ROUND <= 255); + _vec_find (v)->hdr_size = header_bytes / VEC_HEADER_ROUND; + _vec_find (v)->log2_align = min_log2 (data_align); if (PREDICT_FALSE (numa_id != VEC_NUMA_UNSPECIFIED)) clib_mem_set_per_cpu_heap (oldheap); return v; } + ASSERT (_vec_find (v)->hdr_size * VEC_HEADER_ROUND == header_bytes); + header_bytes = _vec_find (v)->hdr_size * VEC_HEADER_ROUND; + + ASSERT (data_align == (1 << _vec_find (v)->log2_align)); + data_align = 1 << _vec_find (v)->log2_align; + vh->len += length_increment; old = v - header_bytes; diff --git a/src/vppinfra/vec_bootstrap.h b/src/vppinfra/vec_bootstrap.h index f2940288110..d628d3827f9 100644 --- a/src/vppinfra/vec_bootstrap.h +++ b/src/vppinfra/vec_bootstrap.h @@ -56,12 +56,16 @@ typedef struct { u32 len; /**< Number of elements in vector (NOT its allocated length). */ u8 numa_id; /**< NUMA id */ - u8 vpad[3]; /**< pad to 8 bytes */ + u8 hdr_size; /**< header size divided by VEC_HEADER_ROUND */ + u8 log2_align; /**< data alignment */ + u8 vpad[1]; /**< pad to 8 bytes */ u8 vector_data[0]; /**< Vector data . */ } vec_header_t; #define VEC_NUMA_UNSPECIFIED (0xFF) +#define VEC_HEADER_ROUND 8 + /** \brief Find the vector header Given the user's pointer to a vector, find the corresponding @@ -78,8 +82,7 @@ typedef struct always_inline uword vec_header_bytes (uword header_bytes) { - return round_pow2 (header_bytes + sizeof (vec_header_t), - sizeof (vec_header_t)); + return round_pow2 (header_bytes + sizeof (vec_header_t), VEC_HEADER_ROUND); } /** \brief Find a user vector header |