*/
#include <svm/fifo_segment.h>
+#include <vppinfra/mem.h>
+
+static inline void *
+fsh_alloc_aligned (fifo_segment_header_t *fsh, uword size, uword align)
+{
+ uword cur_pos, cur_pos_align, new_pos;
+
+ cur_pos = clib_atomic_load_relax_n (&fsh->byte_index);
+ cur_pos_align = round_pow2_u64 (cur_pos, align);
+ size = round_pow2_u64 (size, align);
+ new_pos = cur_pos_align + size;
+
+ if (new_pos >= fsh->max_byte_index)
+ return 0;
+
+ while (!clib_atomic_cmp_and_swap_acq_relax (&fsh->byte_index, &cur_pos,
+ &new_pos, 1 /* weak */))
+ {
+ cur_pos_align = round_pow2_u64 (cur_pos, align);
+ new_pos = cur_pos_align + size;
+ if (new_pos >= fsh->max_byte_index)
+ return 0;
+ }
+ return uword_to_pointer ((u8 *) fsh + cur_pos_align, void *);
+}
+
+static inline void *
+fsh_alloc (fifo_segment_header_t *fsh, uword size)
+{
+ return fsh_alloc_aligned (fsh, size, 8);
+}
static inline fifo_segment_slice_t *
fsh_slice_get (fifo_segment_header_t * fsh, u32 slice_index)
return &fsh->slices[slice_index];
}
+static inline fifo_slice_private_t *
+fs_slice_private_get (fifo_segment_t *fs, u32 slice_index)
+{
+ ASSERT (slice_index < fs->n_slices);
+ return &fs->slices[slice_index];
+}
+
static char *fifo_segment_mem_status_strings[] = {
#define _(sym,str) str,
foreach_segment_mem_status
#undef _
};
-/**
- * Fifo segment free space
- *
- * Queries the underlying memory manager, dlmalloc, for free space. Since this
- * ends up walking the internal data structures, it should not be called
- * indiscriminately.
- *
- * @param fs fifo segment
- * @return number of free bytes
- */
-static uword
-fsh_free_space (fifo_segment_header_t * fsh)
-{
- return clib_mem_get_heap_free_space (fsh->ssvm_sh->heap);
-}
-
-static inline void
-fsh_free_bytes_sub (fifo_segment_header_t * fsh, int size)
-{
- clib_atomic_fetch_sub_rel (&fsh->n_free_bytes, size);
-}
-
static inline uword
fsh_n_free_bytes (fifo_segment_header_t * fsh)
{
- uword n_free = clib_atomic_load_relax_n (&fsh->n_free_bytes);
- return n_free > fsh->n_reserved_bytes ? n_free - fsh->n_reserved_bytes : 0;
-}
-
-static inline void
-fsh_update_free_bytes (fifo_segment_header_t * fsh)
-{
- clib_atomic_store_rel_n (&fsh->n_free_bytes, fsh_free_space (fsh));
+ uword cur_pos = clib_atomic_load_relax_n (&fsh->byte_index);
+ ASSERT (fsh->max_byte_index > cur_pos);
+ return fsh->max_byte_index - cur_pos;
}
static inline void
fss->virtual_mem += n_bytes;
}
-static void
-fsh_check_mem (fifo_segment_header_t * fsh)
+static inline void
+fss_chunk_freelist_lock (fifo_segment_slice_t *fss)
{
- uword thresh;
-
- if (fsh->flags & FIFO_SEGMENT_F_MEM_LIMIT)
- return;
-
- thresh = clib_max (0.01 * fsh->ssvm_sh->ssvm_size,
- 2 * fsh->n_reserved_bytes);
- if (fsh->n_free_bytes > thresh)
- return;
+ u32 free = 0;
+ while (!clib_atomic_cmp_and_swap_acq_relax_n (&fss->chunk_lock, &free, 1, 0))
+ {
+ /* atomic load limits number of compare_exchange executions */
+ while (clib_atomic_load_relax_n (&fss->chunk_lock))
+ CLIB_PAUSE ();
+ /* on failure, compare_exchange writes (*p)->lock into free */
+ free = 0;
+ }
+}
- fsh->flags |= FIFO_SEGMENT_F_MEM_LIMIT;
- fsh_update_free_bytes (fsh);
+static inline void
+fss_chunk_freelist_unlock (fifo_segment_slice_t *fss)
+{
+ /* Make sure all reads/writes are complete before releasing the lock */
+ clib_atomic_release (&fss->chunk_lock);
}
static inline int
fss_chunk_fl_index_is_valid (fifo_segment_slice_t * fss, u32 fl_index)
{
- return (fl_index < vec_len (fss->free_chunks));
+ return (fl_index < FS_CHUNK_VEC_LEN);
}
static void
-fss_chunk_free_list_push (fifo_segment_slice_t * fss, u32 fl_index,
- svm_fifo_chunk_t * c)
+fss_chunk_free_list_push (fifo_segment_header_t *fsh,
+ fifo_segment_slice_t *fss, u32 fl_index,
+ svm_fifo_chunk_t *c)
{
- clib_spinlock_lock (&fss->chunk_lock);
+ fss_chunk_freelist_lock (fss);
c->next = fss->free_chunks[fl_index];
- fss->free_chunks[fl_index] = c;
- clib_spinlock_unlock (&fss->chunk_lock);
+ fss->free_chunks[fl_index] = fs_chunk_sptr (fsh, c);
+ fss_chunk_freelist_unlock (fss);
}
static void
-fss_chunk_free_list_push_list (fifo_segment_slice_t * fss, u32 fl_index,
- svm_fifo_chunk_t * head,
- svm_fifo_chunk_t * tail)
+fss_chunk_free_list_push_list (fifo_segment_header_t *fsh,
+ fifo_segment_slice_t *fss, u32 fl_index,
+ svm_fifo_chunk_t *head, svm_fifo_chunk_t *tail)
{
- clib_spinlock_lock (&fss->chunk_lock);
+ fss_chunk_freelist_lock (fss);
tail->next = fss->free_chunks[fl_index];
- fss->free_chunks[fl_index] = head;
- clib_spinlock_unlock (&fss->chunk_lock);
+ fss->free_chunks[fl_index] = fs_chunk_sptr (fsh, head);
+ fss_chunk_freelist_unlock (fss);
}
static svm_fifo_chunk_t *
-fss_chunk_free_list_pop (fifo_segment_slice_t * fss, u32 fl_index)
+fss_chunk_free_list_pop (fifo_segment_header_t *fsh, fifo_segment_slice_t *fss,
+ u32 fl_index)
{
svm_fifo_chunk_t *c;
ASSERT (fss_chunk_fl_index_is_valid (fss, fl_index));
- clib_spinlock_lock (&fss->chunk_lock);
+ fss_chunk_freelist_lock (fss);
if (!fss->free_chunks[fl_index])
{
- clib_spinlock_unlock (&fss->chunk_lock);
+ fss_chunk_freelist_unlock (fss);
return 0;
}
- c = fss->free_chunks[fl_index];
+ c = fs_chunk_ptr (fsh, fss->free_chunks[fl_index]);
fss->free_chunks[fl_index] = c->next;
- clib_spinlock_unlock (&fss->chunk_lock);
+ fss_chunk_freelist_unlock (fss);
return c;
}
static inline void
-fss_fifo_add_active_list (fifo_segment_slice_t * fss, svm_fifo_t * f)
+pfss_fifo_add_active_list (fifo_slice_private_t *pfss, svm_fifo_t *f)
{
- if (fss->fifos)
+ if (pfss->active_fifos)
{
- fss->fifos->prev = f;
- f->next = fss->fifos;
+ pfss->active_fifos->prev = f;
+ f->next = pfss->active_fifos;
}
- fss->fifos = f;
+ pfss->active_fifos = f;
}
static inline void
-fss_fifo_del_active_list (fifo_segment_slice_t * fss, svm_fifo_t * f)
+pfss_fifo_del_active_list (fifo_slice_private_t *pfss, svm_fifo_t *f)
{
if (f->flags & SVM_FIFO_F_LL_TRACKED)
{
if (f->prev)
f->prev->next = f->next;
else
- fss->fifos = f->next;
+ pfss->active_fifos = f->next;
if (f->next)
f->next->prev = f->prev;
}
int
fifo_segment_init (fifo_segment_t * fs)
{
+ u32 align = 8, offset = 2 * 4096, slices_sz, i;
+ uword max_fifo, seg_start, seg_sz;
fifo_segment_header_t *fsh;
- fifo_segment_slice_t *fss;
ssvm_shared_header_t *sh;
- u32 max_chunk_sz;
- uword max_fifo;
- void *oldheap;
- int i;
+ void *seg_data;
+ /* TODO remove ssvm heap entirely */
sh = fs->ssvm.sh;
- oldheap = ssvm_push_heap (sh);
- /*
- * Manually align the fifo segment header to sizeof(uword) = 8 bytes.
- * Long story made short: the "process-private" fifo segment
- * is allocated from the main heap, not mmapped. dlmalloc
- * only guarantees 4-byte alignment, and on aarch64
- * the fsh can end up 4-byte but not 8-byte aligned.
- * That eventually causes the atomic op in fifo_segment_update_free_bytes
- * to backfire.
- */
- fsh = clib_mem_alloc_aligned (sizeof (*fsh), sizeof (uword));
- clib_memset (fsh, 0, sizeof (*fsh));
- fs->h = sh->opaque[0] = fsh;
+ seg_data = (u8 *) sh + offset;
+ seg_sz = sh->ssvm_size - offset;
+
fs->n_slices = clib_max (fs->n_slices, 1);
+ slices_sz = sizeof (fifo_segment_slice_t) * fs->n_slices;
+
+ seg_start = round_pow2_u64 (pointer_to_uword (seg_data), align);
+ fsh = uword_to_pointer (seg_start, void *);
+ memset (fsh, 0, sizeof (*fsh) + slices_sz);
- fsh->ssvm_sh = fs->ssvm.sh;
+ fsh->byte_index = sizeof (*fsh) + slices_sz;
+ fsh->max_byte_index = seg_sz;
fsh->n_slices = fs->n_slices;
- max_fifo = clib_min ((fsh_free_space (fsh) - 4096) / 2,
- FIFO_SEGMENT_MAX_FIFO_SIZE);
- fsh->max_log2_chunk_size = max_log2 (max_fifo);
+ max_fifo = clib_min ((seg_sz - slices_sz) / 2, FIFO_SEGMENT_MAX_FIFO_SIZE);
+ fsh->max_log2_fifo_size = min_log2 (max_fifo);
+ fsh->n_cached_bytes = 0;
+ fsh->n_reserved_bytes = fsh->byte_index;
+ ASSERT (fsh->max_byte_index <= sh->ssvm_size - offset);
- fsh->slices = clib_mem_alloc (sizeof (*fss) * fs->n_slices);
- clib_memset (fsh->slices, 0, sizeof (*fss) * fs->n_slices);
- max_chunk_sz = fsh->max_log2_chunk_size - FIFO_SEGMENT_MIN_LOG2_FIFO_SIZE;
+ fs->max_byte_index = fsh->max_byte_index;
+ fs->h = sh->opaque[0] = fsh;
+ vec_validate (fs->slices, fs->n_slices - 1);
for (i = 0; i < fs->n_slices; i++)
- {
- fss = fsh_slice_get (fsh, i);
- vec_validate_init_empty (fss->free_chunks, max_chunk_sz, 0);
- vec_validate_init_empty (fss->num_chunks, max_chunk_sz, 0);
- clib_spinlock_init (&fss->chunk_lock);
- }
-
- ssvm_pop_heap (oldheap);
+ fs->slices[i].fifos =
+ clib_mem_bulk_init (sizeof (svm_fifo_t), CLIB_CACHE_LINE_BYTES, 32);
- fsh->n_free_bytes = fsh_free_space (fsh);
- fsh->n_cached_bytes = 0;
- fsh->n_reserved_bytes = clib_min (0.01 * fsh->n_free_bytes, 256 << 10);
sh->ready = 1;
return (0);
}
int
fifo_segment_attach (fifo_segment_main_t * sm, fifo_segment_create_args_t * a)
{
+ fifo_segment_header_t *fsh;
fifo_segment_t *fs;
int rv;
}
/* Fish the segment header */
- fs->h = fs->ssvm.sh->opaque[0];
+ fsh = fs->h = fs->ssvm.sh->opaque[0];
+
+ /* Probably a segment without fifos */
+ if (!fsh)
+ goto done;
+ fs->max_byte_index = fsh->max_byte_index;
+ vec_validate (fs->slices, 0);
+ fs->slices[0].fifos =
+ clib_mem_bulk_init (sizeof (svm_fifo_t), CLIB_CACHE_LINE_BYTES, 32);
+
+done:
vec_add1 (a->new_segment_indices, fs - sm->segments);
return (0);
}
void
fifo_segment_delete (fifo_segment_main_t * sm, fifo_segment_t * s)
{
+ fifo_segment_cleanup (s);
ssvm_delete (&s->ssvm);
clib_memset (s, 0xfe, sizeof (*s));
pool_put (sm->segments, s);
{
if (PREDICT_FALSE (size < FIFO_SEGMENT_MIN_FIFO_SIZE))
return 0;
- return max_log2 (size) - FIFO_SEGMENT_MIN_LOG2_FIFO_SIZE;
+ return clib_min (max_log2 (size) - FIFO_SEGMENT_MIN_LOG2_FIFO_SIZE,
+ FS_CHUNK_VEC_LEN - 1);
}
static inline u32
* 4K minimum. It's not likely that anything good will happen
* with a smaller FIFO.
*/
- return size >= FIFO_SEGMENT_MIN_FIFO_SIZE
- && size <= (1ULL << fsh->max_log2_chunk_size);
+ return size >= FIFO_SEGMENT_MIN_FIFO_SIZE &&
+ size <= (1ULL << fsh->max_log2_fifo_size);
}
svm_fifo_chunk_t *
while (req_bytes)
{
- c = fss_chunk_free_list_pop (fss, fl_index);
+ c = fss_chunk_free_list_pop (fsh, fss, fl_index);
if (c)
{
- c->next = first;
+ c->next = fs_chunk_sptr (fsh, first);
first = c;
n_alloc += fl_size;
req_bytes -= clib_min (fl_size, req_bytes);
while (c)
{
fl_index = fs_freelist_for_size (c->length);
- next = c->next;
- fss_chunk_free_list_push (fss, fl_index, c);
+ next = fs_chunk_ptr (fsh, c->next);
+ fss_chunk_free_list_push (fsh, fss, fl_index, c);
c = next;
}
n_alloc = 0;
fl_index = fs_freelist_for_size (data_bytes) + 1;
if (!fss_chunk_fl_index_is_valid (fss, fl_index))
return 0;
- first = fss_chunk_free_list_pop (fss, fl_index);
+ first = fss_chunk_free_list_pop (fsh, fss, fl_index);
if (first)
{
first->next = 0;
fsh_try_alloc_fifo_hdr_batch (fifo_segment_header_t * fsh,
fifo_segment_slice_t * fss, u32 batch_size)
{
- svm_fifo_t *f;
- void *oldheap;
+ svm_fifo_shared_t *f;
uword size;
u8 *fmem;
int i;
- size = (uword) sizeof (*f) * batch_size;
+ ASSERT (batch_size != 0);
- oldheap = ssvm_push_heap (fsh->ssvm_sh);
- fmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
- 0 /* align_offset */ ,
- 0 /* os_out_of_memory */ );
- ssvm_pop_heap (oldheap);
+ size = (uword) sizeof (*f) * batch_size;
- /* Out of space.. */
+ fmem = fsh_alloc_aligned (fsh, size, CLIB_CACHE_LINE_BYTES);
if (fmem == 0)
return -1;
/* Carve fifo hdr space */
for (i = 0; i < batch_size; i++)
{
- f = (svm_fifo_t *) fmem;
+ f = (svm_fifo_shared_t *) fmem;
memset (f, 0, sizeof (*f));
f->next = fss->free_fifos;
fss->free_fifos = f;
svm_fifo_chunk_t *c, *head = 0, *tail;
uword size, total_chunk_bytes;
u32 rounded_data_size;
- void *oldheap;
u8 *cmem;
int i;
+ ASSERT (batch_size != 0);
+
rounded_data_size = fs_freelist_index_to_size (fl_index);
total_chunk_bytes = (uword) batch_size *rounded_data_size;
size = (uword) (sizeof (*c) + rounded_data_size) * batch_size;
- oldheap = ssvm_push_heap (fsh->ssvm_sh);
- cmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
- 0 /* align_offset */ ,
- 0 /* os_out_of_memory */ );
- ssvm_pop_heap (oldheap);
-
- /* Out of space.. */
+ cmem = fsh_alloc_aligned (fsh, size, 8 /* chunk hdr is 24B */);
if (cmem == 0)
return -1;
{
c->start_byte = 0;
c->length = rounded_data_size;
- c->next = head;
+ c->next = fs_chunk_sptr (fsh, head);
head = c;
cmem += sizeof (*c) + rounded_data_size;
c = (svm_fifo_chunk_t *) cmem;
}
- fss_chunk_free_list_push_list (fss, fl_index, head, tail);
+ fss_chunk_free_list_push_list (fsh, fss, fl_index, head, tail);
fss->num_chunks[fl_index] += batch_size;
fss_fl_chunk_bytes_add (fss, total_chunk_bytes);
fsh_cached_bytes_add (fsh, total_chunk_bytes);
- fsh_free_bytes_sub (fsh, size);
return 0;
}
return fsh_try_alloc_chunk_batch (fsh, fss, fl_index, batch_size);
}
-static svm_fifo_t *
-fsh_try_alloc_fifo_hdr (fifo_segment_header_t * fsh,
- fifo_segment_slice_t * fss)
+static svm_fifo_shared_t *
+fsh_try_alloc_fifo_hdr (fifo_segment_header_t *fsh, fifo_segment_slice_t *fss)
{
- svm_fifo_t *f;
+ svm_fifo_shared_t *f;
if (!fss->free_fifos)
{
fl_index = fs_freelist_for_size (data_bytes);
free_list:
- c = fss_chunk_free_list_pop (fss, fl_index);
+ c = fss_chunk_free_list_pop (fsh, fss, fl_index);
if (c)
{
c->next = 0;
goto done;
batch = n_free / FIFO_SEGMENT_MIN_FIFO_SIZE;
if (!batch || fsh_try_alloc_chunk_batch (fsh, fss, 0, batch))
- {
- fsh_check_mem (fsh);
- goto done;
- }
+ goto done;
}
if (data_bytes <= fss_fl_chunk_bytes (fss) + n_free)
{
batch = (data_bytes - fss_fl_chunk_bytes (fss)) / min_size;
batch = clib_min (batch + 1, n_free / min_size);
if (fsh_try_alloc_chunk_batch (fsh, fss, 0, batch))
- {
- fsh_check_mem (fsh);
- goto done;
- }
+ goto done;
c = fs_try_alloc_multi_chunk (fsh, fss, data_bytes);
}
}
* - single fifo allocation
* - grab multiple fifo chunks from freelists
*/
-static svm_fifo_t *
-fs_try_alloc_fifo (fifo_segment_header_t * fsh, fifo_segment_slice_t * fss,
- u32 data_bytes)
+static svm_fifo_shared_t *
+fs_try_alloc_fifo (fifo_segment_header_t *fsh, u32 slice_index, u32 data_bytes)
{
+ fifo_segment_slice_t *fss;
u32 fl_index, min_size;
svm_fifo_chunk_t *c;
- svm_fifo_t *f = 0;
+ svm_fifo_shared_t *sf = 0;
+ fss = fsh_slice_get (fsh, slice_index);
min_size = clib_max ((fsh->pct_first_alloc * data_bytes) / 100, 4096);
fl_index = fs_freelist_for_size (min_size);
if (!fss_chunk_fl_index_is_valid (fss, fl_index))
return 0;
- f = fsh_try_alloc_fifo_hdr (fsh, fss);
- if (!f)
+ sf = fsh_try_alloc_fifo_hdr (fsh, fss);
+ if (!sf)
return 0;
c = fsh_try_alloc_chunk (fsh, fss, min_size);
if (!c)
{
- f->next = fss->free_fifos;
- fss->free_fifos = f;
+ sf->next = fss->free_fifos;
+ fss->free_fifos = sf;
return 0;
}
- f->start_chunk = c;
+ sf->start_chunk = fs_chunk_sptr (fsh, c);
while (c->next)
- c = c->next;
- f->end_chunk = c;
- f->size = data_bytes;
- f->fs_hdr = fsh;
+ c = fs_chunk_ptr (fsh, c->next);
+ sf->end_chunk = fs_chunk_sptr (fsh, c);
+ sf->size = data_bytes;
+ sf->slice_index = slice_index;
- return f;
+ return sf;
}
svm_fifo_chunk_t *
while (c)
{
CLIB_MEM_UNPOISON (c, sizeof (*c));
- next = c->next;
+ next = fs_chunk_ptr (fsh, c->next);
fl_index = fs_freelist_for_size (c->length);
- fss_chunk_free_list_push (fss, fl_index, c);
+ fss_chunk_free_list_push (fsh, fss, fl_index, c);
n_collect += fs_freelist_index_to_size (fl_index);
c = next;
}
fsh_slice_collect_chunks (fsh, fss, c);
}
+svm_fifo_t *
+fs_fifo_alloc (fifo_segment_t *fs, u32 slice_index)
+{
+ fifo_slice_private_t *pfss = &fs->slices[slice_index];
+ svm_fifo_t *f;
+
+ f = clib_mem_bulk_alloc (pfss->fifos);
+ clib_memset (f, 0, sizeof (*f));
+ return f;
+}
+
+void
+fs_fifo_free (fifo_segment_t *fs, svm_fifo_t *f)
+{
+ u32 slice_index = f->shr->slice_index;
+ fifo_slice_private_t *pfss;
+
+ pfss = &fs->slices[slice_index];
+ clib_mem_bulk_free (pfss->fifos, f);
+}
+
+void
+fifo_segment_cleanup (fifo_segment_t *fs)
+{
+ int slice_index;
+ svm_msg_q_t *mq = 0;
+
+ for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
+ clib_mem_bulk_destroy (fs->slices[slice_index].fifos);
+
+ vec_foreach (fs->mqs, mq)
+ vec_free (mq->rings);
+
+ vec_free (fs->mqs);
+}
+
/**
* Allocate fifo in fifo segment
*/
u32 data_bytes, fifo_segment_ftype_t ftype)
{
fifo_segment_header_t *fsh = fs->h;
+ fifo_slice_private_t *pfss;
fifo_segment_slice_t *fss;
+ svm_fifo_shared_t *sf;
svm_fifo_t *f = 0;
ASSERT (slice_index < fs->n_slices);
- if (PREDICT_FALSE (data_bytes > 1 << fsh->max_log2_chunk_size))
+ if (PREDICT_FALSE (data_bytes > 1 << fsh->max_log2_fifo_size))
return 0;
- fss = fsh_slice_get (fsh, slice_index);
- f = fs_try_alloc_fifo (fsh, fss, data_bytes);
- if (!f)
+ sf = fs_try_alloc_fifo (fsh, slice_index, data_bytes);
+ if (!sf)
goto done;
- f->slice_index = slice_index;
+ f = fs_fifo_alloc (fs, slice_index);
+ f->fs_hdr = fsh;
+ f->shr = sf;
svm_fifo_init (f, data_bytes);
+ fss = fsh_slice_get (fsh, slice_index);
+ pfss = fs_slice_private_get (fs, slice_index);
+
/* If rx fifo type add to active fifos list. When cleaning up segment,
* we need a list of active sessions that should be disconnected. Since
* both rx and tx fifos keep pointers to the session, it's enough to track
* only one. */
if (ftype == FIFO_SEGMENT_RX_FIFO)
{
- fss_fifo_add_active_list (fss, f);
+ pfss_fifo_add_active_list (pfss, f);
f->flags |= SVM_FIFO_F_LL_TRACKED;
}
return (f);
}
+svm_fifo_t *
+fifo_segment_alloc_fifo_w_shared (fifo_segment_t *fs, svm_fifo_shared_t *sf)
+{
+ svm_fifo_t *f = fs_fifo_alloc (fs, 0);
+ f->fs_hdr = fs->h;
+ f->shr = sf;
+
+ f->ooos_list_head = OOO_SEGMENT_INVALID_INDEX;
+ f->segment_index = SVM_FIFO_INVALID_INDEX;
+ f->refcnt = 1;
+ return f;
+}
+
/**
* Free fifo allocated in fifo segment
*/
fifo_segment_free_fifo (fifo_segment_t * fs, svm_fifo_t * f)
{
fifo_segment_header_t *fsh = fs->h;
+ fifo_slice_private_t *pfss;
fifo_segment_slice_t *fss;
+ svm_fifo_shared_t *sf;
ASSERT (f->refcnt > 0);
if (--f->refcnt > 0)
return;
- fss = fsh_slice_get (fsh, f->slice_index);
+ /*
+ * Cleanup shared state
+ */
+
+ sf = f->shr;
+ fss = fsh_slice_get (fsh, sf->slice_index);
+ pfss = fs_slice_private_get (fs, sf->slice_index);
+
+ /* Free fifo chunks */
+ fsh_slice_collect_chunks (fsh, fss, fs_chunk_ptr (fsh, f->shr->start_chunk));
+
+ sf->start_chunk = sf->end_chunk = 0;
+ sf->head_chunk = sf->tail_chunk = 0;
+
+ /* Add to free list */
+ sf->next = fss->free_fifos;
+ fss->free_fifos = sf;
+
+ fss->virtual_mem -= svm_fifo_size (f);
+
+ /*
+ * Cleanup private state
+ */
/* Remove from active list. Only rx fifos are tracked */
if (f->flags & SVM_FIFO_F_LL_TRACKED)
{
- fss_fifo_del_active_list (fss, f);
+ pfss_fifo_del_active_list (pfss, f);
f->flags &= ~SVM_FIFO_F_LL_TRACKED;
}
- /* Free fifo chunks */
- fsh_slice_collect_chunks (fsh, fss, f->start_chunk);
-
- f->start_chunk = f->end_chunk = 0;
- f->head_chunk = f->tail_chunk = f->ooo_enq = f->ooo_deq = 0;
-
- /* not allocated on segment heap */
svm_fifo_free_chunk_lookup (f);
svm_fifo_free_ooo_data (f);
if (CLIB_DEBUG)
{
- f->master_session_index = ~0;
+ sf->master_session_index = ~0;
f->master_thread_index = ~0;
}
- fss->virtual_mem -= svm_fifo_size (f);
-
- /* Add to free list */
- f->next = fss->free_fifos;
+ f->ooo_enq = f->ooo_deq = 0;
f->prev = 0;
- fss->free_fifos = f;
+
+ fs_fifo_free (fs, f);
fsh_active_fifos_update (fsh, -1);
}
void
fifo_segment_detach_fifo (fifo_segment_t * fs, svm_fifo_t * f)
{
+ fifo_slice_private_t *pfss;
fifo_segment_slice_t *fss;
svm_fifo_chunk_t *c;
u32 fl_index;
ASSERT (f->refcnt == 1);
- fss = fsh_slice_get (fs->h, f->slice_index);
+ fss = fsh_slice_get (fs->h, f->shr->slice_index);
+ pfss = fs_slice_private_get (fs, f->shr->slice_index);
fss->virtual_mem -= svm_fifo_size (f);
if (f->flags & SVM_FIFO_F_LL_TRACKED)
- fss_fifo_del_active_list (fss, f);
+ pfss_fifo_del_active_list (pfss, f);
- c = f->start_chunk;
+ c = fs_chunk_ptr (fs->h, f->shr->start_chunk);
while (c)
{
fl_index = fs_freelist_for_size (c->length);
clib_atomic_fetch_sub_rel (&fss->num_chunks[fl_index], 1);
- c = c->next;
+ c = fs_chunk_ptr (fs->h, c->next);
}
}
fifo_segment_attach_fifo (fifo_segment_t * fs, svm_fifo_t * f,
u32 slice_index)
{
+ fifo_slice_private_t *pfss;
fifo_segment_slice_t *fss;
svm_fifo_chunk_t *c;
u32 fl_index;
- f->slice_index = slice_index;
- fss = fsh_slice_get (fs->h, f->slice_index);
+ f->shr->slice_index = slice_index;
+ fss = fsh_slice_get (fs->h, f->shr->slice_index);
+ pfss = fs_slice_private_get (fs, f->shr->slice_index);
fss->virtual_mem += svm_fifo_size (f);
if (f->flags & SVM_FIFO_F_LL_TRACKED)
- fss_fifo_add_active_list (fss, f);
+ pfss_fifo_add_active_list (pfss, f);
- c = f->start_chunk;
+ c = fs_chunk_ptr (fs->h, f->shr->start_chunk);
while (c)
{
fl_index = fs_freelist_for_size (c->length);
clib_atomic_fetch_add_rel (&fss->num_chunks[fl_index], 1);
- c = c->next;
+ c = fs_chunk_ptr (fs->h, c->next);
}
}
-int
-fifo_segment_prealloc_fifo_hdrs (fifo_segment_t * fs, u32 slice_index,
- u32 batch_size)
+svm_msg_q_t *
+fifo_segment_msg_q_alloc (fifo_segment_t *fs, u32 mq_index,
+ svm_msg_q_cfg_t *cfg)
{
fifo_segment_header_t *fsh = fs->h;
- fifo_segment_slice_t *fss;
- svm_fifo_t *f;
- void *oldheap;
- uword size;
- u8 *fmem;
- int i;
+ svm_msg_q_shared_t *smq;
+ svm_msg_q_t *mq;
+ void *base;
+ u32 size;
- fss = fsh_slice_get (fsh, slice_index);
- size = (uword) (sizeof (*f)) * batch_size;
+ if (!fs->mqs)
+ {
+ u32 n_mqs = clib_max (fs->h->n_mqs, 1);
+ vec_validate (fs->mqs, n_mqs - 1);
+ }
- oldheap = ssvm_push_heap (fsh->ssvm_sh);
- fmem = clib_mem_alloc_aligned_at_offset (size, CLIB_CACHE_LINE_BYTES,
- 0 /* align_offset */ ,
- 0 /* os_out_of_memory */ );
- ssvm_pop_heap (oldheap);
+ size = svm_msg_q_size_to_alloc (cfg);
+ base = fsh_alloc_aligned (fsh, size, 8);
+ fsh->n_reserved_bytes += size;
- /* Out of space.. */
- if (fmem == 0)
- return -1;
+ smq = svm_msg_q_init (base, cfg);
+ mq = vec_elt_at_index (fs->mqs, mq_index);
+ svm_msg_q_attach (mq, smq);
- /* Carve fifo + chunk space */
- for (i = 0; i < batch_size; i++)
+ return mq;
+}
+
+svm_msg_q_t *
+fifo_segment_msg_q_attach (fifo_segment_t *fs, uword offset, u32 mq_index)
+{
+ svm_msg_q_t *mq;
+
+ if (!fs->mqs)
{
- f = (svm_fifo_t *) fmem;
- memset (f, 0, sizeof (*f));
- f->next = fss->free_fifos;
- fss->free_fifos = f;
- fmem += sizeof (*f);
+ u32 n_mqs = clib_max (fs->h->n_mqs, 1);
+ vec_validate (fs->mqs, n_mqs - 1);
}
- fsh_free_bytes_sub (fsh, size);
+ mq = vec_elt_at_index (fs->mqs, mq_index);
- return 0;
+ if (!mq->q)
+ {
+ svm_msg_q_shared_t *smq;
+ smq = (svm_msg_q_shared_t *) ((u8 *) fs->h + offset);
+ svm_msg_q_attach (mq, smq);
+ }
+
+ ASSERT (fifo_segment_msg_q_offset (fs, mq_index) == offset);
+
+ return mq;
+}
+
+uword
+fifo_segment_msg_q_offset (fifo_segment_t *fs, u32 mq_index)
+{
+ svm_msg_q_t *mq = vec_elt_at_index (fs->mqs, mq_index);
+
+ if (mq->q == 0)
+ return ~0ULL;
+
+ return (uword) ((u8 *) mq->q - (u8 *) fs->h) - sizeof (svm_msg_q_shared_t);
+}
+
+int
+fifo_segment_prealloc_fifo_hdrs (fifo_segment_t * fs, u32 slice_index,
+ u32 batch_size)
+{
+ fifo_segment_header_t *fsh = fs->h;
+ fifo_segment_slice_t *fss;
+
+ fss = fsh_slice_get (fsh, slice_index);
+ return fsh_try_alloc_fifo_hdr_batch (fsh, fss, batch_size);
}
int
/* Calculate space requirements */
pair_size = 2 * hdrs + rx_rounded_data_size + tx_rounded_data_size;
- space_available = fsh_free_space (fsh);
+ space_available = fsh_n_free_bytes (fsh);
pairs_to_alloc = space_available / pair_size;
pairs_to_alloc = clib_min (pairs_to_alloc, *n_fifo_pairs);
pairs_per_slice = pairs_to_alloc / fs->n_slices;
for (i = 0; i < fs->n_slices; i++)
{
- fss = fsh_slice_get (fsh, i);
alloc_now = clib_min (pairs_per_slice, *n_fifo_pairs);
+ if (0 == alloc_now)
+ break;
+
+ fss = fsh_slice_get (fsh, i);
if (fs_try_alloc_fifo_batch (fsh, fss, rx_fl_index, alloc_now))
clib_warning ("rx prealloc failed: pairs %u", alloc_now);
if (fs_try_alloc_fifo_batch (fsh, fss, tx_fl_index, alloc_now))
static u32
fs_slice_num_free_fifos (fifo_segment_slice_t * fss)
{
- svm_fifo_t *f;
+ svm_fifo_shared_t *f;
u32 count = 0;
f = fss->free_fifos;
}
static u32
-fs_slice_num_free_chunks (fifo_segment_slice_t * fss, u32 size)
+fs_slice_num_free_chunks (fifo_segment_header_t *fsh,
+ fifo_segment_slice_t *fss, u32 size)
{
u32 count = 0, rounded_size, fl_index;
svm_fifo_chunk_t *c;
/* Count all free chunks? */
if (size == ~0)
{
- for (i = 0; i < vec_len (fss->free_chunks); i++)
+ for (i = 0; i < FS_CHUNK_VEC_LEN; i++)
{
- c = fss->free_chunks[i];
+ c = fs_chunk_ptr (fsh, fss->free_chunks[i]);
if (c == 0)
continue;
while (c)
{
- c = c->next;
+ c = fs_chunk_ptr (fsh, c->next);
count++;
}
}
rounded_size = (1 << (max_log2 (size)));
fl_index = fs_freelist_for_size (rounded_size);
- if (fl_index >= vec_len (fss->free_chunks))
+ if (fl_index >= FS_CHUNK_VEC_LEN)
return 0;
- c = fss->free_chunks[fl_index];
+ c = fs_chunk_ptr (fsh, fss->free_chunks[fl_index]);
if (c == 0)
return 0;
while (c)
{
- c = c->next;
+ c = fs_chunk_ptr (fsh, c->next);
count++;
}
return count;
for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
{
fss = fsh_slice_get (fsh, slice_index);
- count += fs_slice_num_free_chunks (fss, size);
+ count += fs_slice_num_free_chunks (fsh, fss, size);
}
return count;
}
-void
-fifo_segment_update_free_bytes (fifo_segment_t * fs)
-{
- fsh_update_free_bytes (fs->h);
-}
-
uword
fifo_segment_size (fifo_segment_t * fs)
{
- return fs->ssvm.ssvm_size;
+ return fs->h->max_byte_index - fs->h->n_reserved_bytes;
}
u8
fsh->flags &= ~FIFO_SEGMENT_F_MEM_LIMIT;
}
+void *
+fifo_segment_alloc (fifo_segment_t *fs, uword size)
+{
+ void *rv = fsh_alloc (fs->h, size);
+ /* Mark externally allocated bytes as reserved. This helps
+ * @ref fifo_segment_size report bytes used only for fifos */
+ fs->h->n_reserved_bytes += size;
+ return rv;
+}
+
uword
fifo_segment_free_bytes (fifo_segment_t * fs)
{
svm_fifo_t *
fifo_segment_get_slice_fifo_list (fifo_segment_t * fs, u32 slice_index)
{
- fifo_segment_header_t *fsh = fs->h;
- fifo_segment_slice_t *fss;
+ fifo_slice_private_t *pfss;
- fss = fsh_slice_get (fsh, slice_index);
- return fss->fifos;
+ pfss = fs_slice_private_get (fs, slice_index);
+ return pfss->active_fifos;
}
u8
for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
{
fss = fsh_slice_get (fsh, slice_index);
- for (i = 0; i < vec_len (fss->free_chunks); i++)
+ for (i = 0; i < FS_CHUNK_VEC_LEN; i++)
{
- c = fss->free_chunks[i];
+ c = fs_chunk_ptr (fsh, fss->free_chunks[i]);
if (c == 0 && fss->num_chunks[i] == 0)
continue;
count = 0;
while (c)
{
- c = c->next;
+ c = fs_chunk_ptr (fsh, c->next);
count++;
}
fifo_hdr = free_fifos * sizeof (svm_fifo_t);
est_chunk_bytes = fifo_segment_fl_chunk_bytes (fs);
est_free_seg_bytes = fifo_segment_free_bytes (fs);
- fifo_segment_update_free_bytes (fs);
free_seg_bytes = fifo_segment_free_bytes (fs);
tracked_cached_bytes = fifo_segment_cached_bytes (fs);
allocated = fifo_segment_size (fs);
Code Review / vpp.git / blobdiff