static void
preallocate_fifo_pairs (svm_fifo_segment_private_t * s,
- svm_fifo_segment_create_args_t * a)
+ svm_fifo_segment_create_args_t * a, u32 protect_size)
{
svm_fifo_segment_header_t *fsh = s->h;
u32 rx_fifo_size, tx_fifo_size, pairs_to_allocate;
/* Calculate space requirements */
pair_size = 2 * sizeof (*f) + rx_rounded_data_size + tx_rounded_data_size;
- pairs_to_allocate = clib_min (s->ssvm.ssvm_size / pair_size,
- a->preallocated_fifo_pairs);
+ if (protect_size)
+ protect_size += mheap_bytes (s->ssvm.sh->heap);
+ pairs_to_allocate =
+ clib_min ((s->ssvm.ssvm_size - protect_size) / pair_size,
+ a->preallocated_fifo_pairs);
rx_fifo_size = (sizeof (*f) + rx_rounded_data_size) * pairs_to_allocate;
tx_fifo_size = (sizeof (*f) + tx_rounded_data_size) * pairs_to_allocate;
vec_validate_init_empty (fsh->free_fifos,
clib_max (rx_freelist_index, tx_freelist_index),
0);
- if (0)
- clib_warning ("rx_fifo_size %u (%d mb), tx_fifo_size %u (%d mb)",
- rx_fifo_size, rx_fifo_size >> 20,
- tx_fifo_size, tx_fifo_size >> 20);
/* Allocate rx fifo space. May fail. */
rx_fifo_space = clib_mem_alloc_aligned_at_offset
a->preallocated_fifo_pairs -= pairs_to_allocate;
}
-/** (master) create an svm fifo segment */
+/**
+ * Create an svm fifo segment and initialize as master
+ */
int
svm_fifo_segment_create (svm_fifo_segment_create_args_t * a)
{
- int rv;
- svm_fifo_segment_private_t *s;
svm_fifo_segment_main_t *sm = &svm_fifo_segment_main;
+ svm_fifo_segment_private_t *s;
ssvm_shared_header_t *sh;
svm_fifo_segment_header_t *fsh;
void *oldheap;
+ int rv;
/* Allocate a fresh segment */
pool_get (sm->segments, s);
s->ssvm.name = format (0, "%s%c", a->segment_name, 0);
s->ssvm.requested_va = sm->next_baseva;
- rv = ssvm_master_init (&s->ssvm, s - sm->segments);
-
- if (rv)
+ if ((rv = ssvm_master_init (&s->ssvm, a->segment_type)))
{
- _vec_len (s) = vec_len (s) - 1;
+ pool_put (sm->segments, s);
return (rv);
}
/* Note: requested_va updated due to seg base addr randomization */
- sm->next_baseva = s->ssvm.requested_va + a->segment_size;
+ sm->next_baseva = s->ssvm.sh->ssvm_va + a->segment_size;
sh = s->ssvm.sh;
oldheap = ssvm_push_heap (sh);
/* Set up svm_fifo_segment shared header */
fsh = clib_mem_alloc (sizeof (*fsh));
memset (fsh, 0, sizeof (*fsh));
- sh->opaque[0] = fsh;
- s->h = fsh;
- fsh->segment_name = format (0, "%s%c", a->segment_name, 0);
- preallocate_fifo_pairs (s, a);
+ s->h = sh->opaque[0] = fsh;
+ preallocate_fifo_pairs (s, a, a->seg_protected_space);
ssvm_pop_heap (oldheap);
return (0);
}
-/** Create an svm fifo segment in process-private memory */
+/**
+ * Create an svm fifo segment in process-private memory
+ */
int
svm_fifo_segment_create_process_private (svm_fifo_segment_create_args_t * a)
{
/* Set up svm_fifo_segment shared header */
fsh = clib_mem_alloc (sizeof (*fsh));
memset (fsh, 0, sizeof (*fsh));
- sh->opaque[0] = fsh;
- s->h = fsh;
fsh->flags = FIFO_SEGMENT_F_IS_PRIVATE;
+ s->h = sh->opaque[0] = fsh;
if (!a->private_segment_count)
fsh->flags |= FIFO_SEGMENT_F_IS_MAIN_HEAP;
- fsh->segment_name = format (0, "%s%c", a->segment_name, 0);
if (a->private_segment_count)
{
fsh->flags |= FIFO_SEGMENT_F_IS_PREALLOCATED;
oldheap = clib_mem_get_heap ();
clib_mem_set_heap (sh->heap);
- preallocate_fifo_pairs (s, a);
+ preallocate_fifo_pairs (s, a, i == 0 ? a->seg_protected_space : 0);
clib_mem_set_heap (oldheap);
}
sh->ready = 1;
return (0);
}
-/** (slave) attach to an svm fifo segment */
+/**
+ * Attach as slave to an svm fifo segment
+ */
int
svm_fifo_segment_attach (svm_fifo_segment_create_args_t * a)
{
- int rv;
- svm_fifo_segment_private_t *s;
svm_fifo_segment_main_t *sm = &svm_fifo_segment_main;
- ssvm_shared_header_t *sh;
- svm_fifo_segment_header_t *fsh;
+ svm_fifo_segment_private_t *s;
+ int rv;
/* Allocate a fresh segment */
pool_get (sm->segments, s);
s->ssvm.my_pid = getpid ();
s->ssvm.name = format (0, "%s%c", a->segment_name, 0);
s->ssvm.requested_va = sm->next_baseva;
+ if (a->segment_type == SSVM_SEGMENT_MEMFD)
+ s->ssvm.fd = a->memfd_fd;
+ else
+ s->ssvm.attach_timeout = sm->timeout_in_seconds;
- rv = ssvm_slave_init (&s->ssvm, sm->timeout_in_seconds);
-
- if (rv)
+ if ((rv = ssvm_slave_init (&s->ssvm, a->segment_type)))
{
_vec_len (s) = vec_len (s) - 1;
return (rv);
}
/* Fish the segment header */
- sh = s->ssvm.sh;
- fsh = (svm_fifo_segment_header_t *) sh->opaque[0];
- s->h = fsh;
+ s->h = s->ssvm.sh->opaque[0];
vec_add1 (a->new_segment_indices, s - sm->segments);
return (0);
svm_fifo_segment_delete (svm_fifo_segment_private_t * s)
{
svm_fifo_segment_main_t *sm = &svm_fifo_segment_main;
+
if (s->h->flags & FIFO_SEGMENT_F_IS_PRIVATE)
{
/* Don't try to free vpp's heap! */
mheap_free (s->ssvm.sh->heap);
clib_mem_free (s->ssvm.sh);
clib_mem_free (s->h);
- pool_put (sm->segments, s);
}
else
{
ssvm_delete (&s->ssvm);
- pool_put (sm->segments, s);
}
+ memset (s, 0xfe, sizeof (*s));
+ pool_put (sm->segments, s);
}
+/**
+ * Allocate fifo in svm segment
+ */
svm_fifo_t *
svm_fifo_segment_alloc_fifo (svm_fifo_segment_private_t * s,
u32 data_size_in_bytes,
return count;
}
+void
+svm_fifo_segment_info (svm_fifo_segment_private_t * seg, uword * address,
+ u64 * size)
+{
+ if (seg->h->flags & FIFO_SEGMENT_F_IS_PRIVATE)
+ {
+ mheap_t *heap_header;
+
+ *address = pointer_to_uword (seg->ssvm.sh->heap);
+ heap_header = mheap_header (seg->ssvm.sh->heap);
+ *size = heap_header->max_size;
+ }
+ else
+ {
+ *address = seg->ssvm.sh->ssvm_va;
+ *size = seg->ssvm.ssvm_size;
+ }
+}
+
+mheap_t *
+svm_fifo_segment_heap (svm_fifo_segment_private_t * seg)
+{
+ return seg->ssvm.sh->heap;
+}
+
+u8 *
+format_svm_fifo_segment_type (u8 * s, va_list * args)
+{
+ svm_fifo_segment_private_t *sp;
+ sp = va_arg (*args, svm_fifo_segment_private_t *);
+ ssvm_segment_type_t st = ssvm_type (&sp->ssvm);
+
+ if ((sp->h->flags & FIFO_SEGMENT_F_IS_PRIVATE)
+ && !(sp->h->flags & FIFO_SEGMENT_F_IS_MAIN_HEAP))
+ s = format (s, "%s", "private-heap");
+ else if ((sp->h->flags & FIFO_SEGMENT_F_IS_PRIVATE)
+ && (sp->h->flags & FIFO_SEGMENT_F_IS_MAIN_HEAP))
+ s = format (s, "%s", "main-heap");
+ else if (st == SSVM_SEGMENT_MEMFD)
+ s = format (s, "%s", "memfd");
+ else if (st == SSVM_SEGMENT_SHM)
+ s = format (s, "%s", "shm");
+ else
+ s = format (s, "%s", "unknown");
+ return s;
+}
+
/**
* Segment format function
*/
svm_fifo_segment_private_t *sp
= va_arg (*args, svm_fifo_segment_private_t *);
int verbose = va_arg (*args, int);
- ssvm_shared_header_t *sh;
- svm_fifo_segment_header_t *fsh;
+ svm_fifo_segment_header_t *fsh = sp->h;
+ u32 count, indent;
svm_fifo_t *f;
int i;
- u32 count;
- u32 indent = format_get_indent (s) + 2;
-
- sh = sp->ssvm.sh;
- fsh = (svm_fifo_segment_header_t *) sh->opaque[0];
- s = format (s, "%USegment Heap: %U\n", format_white_space, indent,
- format_mheap, sh->heap, verbose);
+ indent = format_get_indent (s) + 2;
+ s = format (s, "%U segment heap: %U\n", format_white_space, indent,
+ format_mheap, svm_fifo_segment_heap (sp), verbose);
s = format (s, "%U segment has %u active fifos\n",
format_white_space, indent, svm_fifo_segment_num_fifos (sp));
Code Review / vpp.git / blobdiff