#include <vlib/unix/unix.h>
vlib_buffer_callbacks_t *vlib_buffer_callbacks = 0;
-static u32 vlib_buffer_physmem_sz = 32 << 20;
+
+/* when running unpriviledged we are limited by RLIMIT_MEMLOCK which is
+ typically set to 16MB so setting default size for buffer memory to 14MB
+ */
+static u32 vlib_buffer_physmem_sz = 14 << 20;
vlib_buffer_main_t buffer_main;
+/* logging */
+static vlib_log_class_t buffer_log_default;
+
uword
vlib_buffer_length_in_chain_slow_path (vlib_main_t * vm,
vlib_buffer_t * b_first)
pool_get_aligned (vm->buffer_free_list_pool, f, CLIB_CACHE_LINE_BYTES);
- memset (f, 0, sizeof (f[0]));
+ clib_memset (f, 0, sizeof (f[0]));
f->index = f - vm->buffer_free_list_pool;
+ vec_validate (f->buffers, 0);
+ vec_reset_length (f->buffers);
f->n_data_bytes = vlib_buffer_round_size (n_data_bytes);
f->min_n_buffers_each_alloc = VLIB_FRAME_SIZE;
f->buffer_pool_index = 0;
wf - wvm->buffer_free_list_pool);
wf[0] = f[0];
wf->buffers = 0;
+ vec_validate (wf->buffers, 0);
+ vec_reset_length (wf->buffers);
wf->n_alloc = 0;
}
vec_free (f->buffers);
/* Poison it. */
- memset (f, 0xab, sizeof (f[0]));
+ clib_memset (f, 0xab, sizeof (f[0]));
}
/* Add buffer free list. */
}
static_always_inline void *
-vlib_buffer_pool_get_buffer (vlib_buffer_pool_t * bp)
+vlib_buffer_pool_get_buffer (vlib_main_t * vm, vlib_buffer_pool_t * bp)
{
- uword slot, page, addr;
-
- if (PREDICT_FALSE (bp->n_elts == bp->n_used))
- {
- clib_spinlock_unlock (&bp->lock);
- return 0;
- }
- slot = bp->next_clear;
- bp->bitmap = clib_bitmap_set (bp->bitmap, slot, 1);
- bp->next_clear = clib_bitmap_next_clear (bp->bitmap, slot + 1);
- bp->n_used++;
-
- page = slot / bp->buffers_per_page;
- slot -= page * bp->buffers_per_page;
-
- addr = bp->start + (page << bp->log2_page_size) + slot * bp->buffer_size;
-
- return uword_to_pointer (addr, void *);
+ return vlib_physmem_alloc_from_map (vm, bp->physmem_map_index,
+ bp->buffer_size, CLIB_CACHE_LINE_BYTES);
}
/* Make sure free list has at least given number of free buffers. */
clib_spinlock_lock (&bp->lock);
while (n_alloc < n)
{
- if ((b = vlib_buffer_pool_get_buffer (bp)) == 0)
+ if ((b = vlib_buffer_pool_get_buffer (vm, bp)) == 0)
goto done;
n_alloc += 1;
if (CLIB_DEBUG > 0)
vlib_buffer_set_known_state (bi[0], VLIB_BUFFER_KNOWN_FREE);
- memset (b, 0, sizeof (vlib_buffer_t));
+ clib_memset (b, 0, sizeof (vlib_buffer_t));
vlib_buffer_init_for_free_list (b, fl);
if (fl->buffer_init_function)
0);
}
-/* Copy template packet data into buffers as they are allocated. */
-static void __attribute__ ((unused))
-vlib_packet_template_buffer_init (vlib_main_t * vm,
- vlib_buffer_free_list_t * fl,
- u32 * buffers, u32 n_buffers)
-{
- vlib_packet_template_t *t =
- uword_to_pointer (fl->buffer_init_function_opaque,
- vlib_packet_template_t *);
- uword i;
-
- for (i = 0; i < n_buffers; i++)
- {
- vlib_buffer_t *b = vlib_get_buffer (vm, buffers[i]);
- ASSERT (b->current_length == vec_len (t->packet_data));
- clib_memcpy (vlib_buffer_get_current (b), t->packet_data,
- b->current_length);
- }
-}
-
void
vlib_packet_template_init (vlib_main_t * vm,
vlib_packet_template_t * t,
uword n_packet_data_bytes,
uword min_n_buffers_each_alloc, char *fmt, ...)
{
- vlib_buffer_main_t *bm = &buffer_main;
va_list va;
- u8 *name;
- vlib_buffer_free_list_t *fl;
va_start (va, fmt);
- name = va_format (0, fmt, &va);
+ t->name = va_format (0, fmt, &va);
va_end (va);
- if (bm->cb.vlib_packet_template_init_cb)
- bm->cb.vlib_packet_template_init_cb (vm, (void *) t, packet_data,
- n_packet_data_bytes,
- min_n_buffers_each_alloc, name);
-
vlib_worker_thread_barrier_sync (vm);
- memset (t, 0, sizeof (t[0]));
+ clib_memset (t, 0, sizeof (t[0]));
vec_add (t->packet_data, packet_data, n_packet_data_bytes);
t->min_n_buffers_each_alloc = min_n_buffers_each_alloc;
- t->free_list_index = vlib_buffer_create_free_list_helper
- (vm, n_packet_data_bytes,
- /* is_public */ 1,
- /* is_default */ 0,
- name);
-
- ASSERT (t->free_list_index != 0);
- fl = vlib_buffer_get_free_list (vm, t->free_list_index);
- fl->min_n_buffers_each_alloc = t->min_n_buffers_each_alloc;
-
- fl->buffer_init_function = vlib_packet_template_buffer_init;
- fl->buffer_init_function_opaque = pointer_to_uword (t);
-
- fl->buffer_init_template.current_data = 0;
- fl->buffer_init_template.current_length = n_packet_data_bytes;
- fl->buffer_init_template.flags = 0;
- fl->buffer_init_template.n_add_refs = 0;
vlib_worker_thread_barrier_release (vm);
}
*bi_result = bi;
b = vlib_get_buffer (vm, bi);
- clib_memcpy (vlib_buffer_get_current (b),
- t->packet_data, vec_len (t->packet_data));
+ clib_memcpy_fast (vlib_buffer_get_current (b),
+ t->packet_data, vec_len (t->packet_data));
b->current_length = vec_len (t->packet_data);
return b->data;
}
-void
-vlib_packet_template_get_packet_helper (vlib_main_t * vm,
- vlib_packet_template_t * t)
-{
- word n = t->min_n_buffers_each_alloc;
- word l = vec_len (t->packet_data);
- word n_alloc;
-
- ASSERT (l > 0);
- ASSERT (vec_len (t->free_buffers) == 0);
-
- vec_validate (t->free_buffers, n - 1);
- n_alloc = vlib_buffer_alloc_from_free_list (vm, t->free_buffers,
- n, t->free_list_index);
- _vec_len (t->free_buffers) = n_alloc;
-}
-
/* Append given data to end of buffer, possibly allocating new buffers. */
u32
vlib_buffer_add_data (vlib_main_t * vm,
n_left_this_buffer =
n_buffer_bytes - (b->current_data + b->current_length);
n = clib_min (n_left_this_buffer, n_left);
- clib_memcpy (vlib_buffer_get_current (b) + b->current_length, d, n);
+ clib_memcpy_fast (vlib_buffer_get_current (b) + b->current_length, d,
+ n);
b->current_length += n;
n_left -= n;
if (n_left == 0)
vlib_buffer_alloc_from_free_list (vm, &l->next_buffer, 1,
free_list_index))
return copied;
- *last = l = vlib_buffer_chain_buffer (vm, first, l, l->next_buffer);
+ *last = l = vlib_buffer_chain_buffer (vm, l, l->next_buffer);
max = n_buffer_bytes - l->current_length - l->current_data;
}
u16 len = (data_len > max) ? max : data_len;
- clib_memcpy (vlib_buffer_get_current (l) + l->current_length,
- data + copied, len);
+ clib_memcpy_fast (vlib_buffer_get_current (l) + l->current_length,
+ data + copied, len);
vlib_buffer_chain_increase_length (first, l, len);
data_len -= len;
copied += len;
}
u8
-vlib_buffer_pool_create (vlib_main_t * vm, vlib_physmem_region_index_t pri,
- u16 buffer_size)
+vlib_buffer_register_physmem_map (vlib_main_t * vm, u32 physmem_map_index)
{
vlib_buffer_main_t *bm = &buffer_main;
- vlib_physmem_region_t *pr = vlib_physmem_get_region (vm, pri);
vlib_buffer_pool_t *p;
- uword start = pointer_to_uword (pr->mem);
- uword size = pr->size;
+ vlib_physmem_map_t *m = vlib_physmem_get_map (vm, physmem_map_index);
+ uword start = pointer_to_uword (m->base);
+ uword size = (uword) m->n_pages << m->log2_page_size;
if (bm->buffer_mem_size == 0)
{
vec_add2 (bm->buffer_pools, p, 1);
p->start = start;
p->size = size;
- p->physmem_region = pri;
-
- if (buffer_size == 0)
- goto done;
+ p->physmem_map_index = physmem_map_index;
- p->log2_page_size = pr->log2_page_size;
- p->buffer_size = buffer_size;
- p->buffers_per_page = (1ull << pr->log2_page_size) / p->buffer_size;
- p->n_elts = p->buffers_per_page * pr->n_pages;
- p->n_used = 0;
- clib_spinlock_init (&p->lock);
-done:
ASSERT (p - bm->buffer_pools < 256);
return p - bm->buffer_pools;
}
vlib_buffer_main_init (struct vlib_main_t * vm)
{
vlib_buffer_main_t *bm = &buffer_main;
- vlib_physmem_region_index_t pri;
clib_error_t *error;
+ u32 physmem_map_index;
+ u8 pool_index;
+ int log2_page_size = 0;
+
+ buffer_log_default = vlib_log_register_class ("buffer", 0);
if (vlib_buffer_callbacks)
{
/* external plugin has registered own buffer callbacks
so we just copy them and quit */
- clib_memcpy (&bm->cb, vlib_buffer_callbacks,
- sizeof (vlib_buffer_callbacks_t));
+ clib_memcpy_fast (&bm->cb, vlib_buffer_callbacks,
+ sizeof (vlib_buffer_callbacks_t));
bm->callbacks_registered = 1;
return 0;
}
&vlib_buffer_delete_free_list_internal;
clib_spinlock_init (&bm->buffer_known_hash_lockp);
- /* allocate default region */
- error = vlib_physmem_region_alloc (vm, "buffers",
- vlib_buffer_physmem_sz, 0,
- VLIB_PHYSMEM_F_SHARED |
- VLIB_PHYSMEM_F_HUGETLB, &pri);
+retry:
+ error = vlib_physmem_shared_map_create (vm, "buffers",
+ vlib_buffer_physmem_sz,
+ log2_page_size,
+ CLIB_PMALLOC_NUMA_LOCAL,
+ &physmem_map_index);
- if (error == 0)
- goto done;
+ if (error && log2_page_size == 0)
+ {
+ vlib_log_warn (buffer_log_default, "%U", format_clib_error, error);
+ clib_error_free (error);
+ vlib_log_warn (buffer_log_default, "falling back to non-hugepage "
+ "backed buffer pool");
+ log2_page_size = min_log2 (clib_mem_get_page_size ());
+ goto retry;
+ }
- clib_error_free (error);
+ if (error)
+ return error;
- error = vlib_physmem_region_alloc (vm, "buffers",
- vlib_buffer_physmem_sz, 0,
- VLIB_PHYSMEM_F_SHARED, &pri);
-done:
- if (error == 0)
- vlib_buffer_pool_create (vm, pri, sizeof (vlib_buffer_t) +
- VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES);
- return error;
+ pool_index = vlib_buffer_register_physmem_map (vm, physmem_map_index);
+ vlib_buffer_pool_t *bp = vlib_buffer_pool_get (pool_index);
+ clib_spinlock_init (&bp->lock);
+ bp->buffer_size = VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES +
+ sizeof (vlib_buffer_t);
+
+ return 0;
}
static clib_error_t *
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