X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fsvm%2Ffifo_segment.c;h=986778dfe82a31e08ffdbc46ad6af3258dd3fc57;hb=af2cc6425;hp=e3e6caaa6ccdaac0a4cf9702349ae7dffd5884e8;hpb=255554fd7e75a803569e311c28e8ec8da8e7a286;p=vpp.git

diff --git a/src/svm/fifo_segment.c b/src/svm/fifo_segment.c
index e3e6caaa6cc..986778dfe82 100644
--- a/src/svm/fifo_segment.c
+++ b/src/svm/fifo_segment.c
@@ -418,6 +418,14 @@ fifo_segment_get_segment (fifo_segment_main_t * sm, u32 segment_index)
   return pool_elt_at_index (sm->segments, segment_index);
 }
 
+fifo_segment_t *
+fifo_segment_get_segment_if_valid (fifo_segment_main_t *sm, u32 segment_index)
+{
+  if (pool_is_free_index (sm->segments, segment_index))
+    return 0;
+  return pool_elt_at_index (sm->segments, segment_index);
+}
+
 void
 fifo_segment_info (fifo_segment_t * seg, char **address, size_t * size)
 {
@@ -783,9 +791,8 @@ fs_fifo_alloc (fifo_segment_t *fs, u32 slice_index)
 }
 
 void
-fs_fifo_free (fifo_segment_t *fs, svm_fifo_t *f)
+fs_fifo_free (fifo_segment_t *fs, svm_fifo_t *f, u32 slice_index)
 {
-  u32 slice_index = f->shr->slice_index;
   fifo_slice_private_t *pfss;
 
   if (CLIB_DEBUG)
@@ -804,6 +811,8 @@ fifo_segment_cleanup (fifo_segment_t *fs)
   for (slice_index = 0; slice_index < fs->n_slices; slice_index++)
     clib_mem_bulk_destroy (fs->slices[slice_index].fifos);
 
+  vec_free (fs->slices);
+
   vec_foreach (fs->mqs, mq)
     vec_free (mq->rings);
 
@@ -932,11 +941,17 @@ fifo_segment_free_fifo (fifo_segment_t * fs, svm_fifo_t * f)
   f->ooo_enq = f->ooo_deq = 0;
   f->prev = 0;
 
-  fs_fifo_free (fs, f);
+  fs_fifo_free (fs, f, f->shr->slice_index);
 
   fsh_active_fifos_update (fsh, -1);
 }
 
+void
+fifo_segment_free_client_fifo (fifo_segment_t *fs, svm_fifo_t *f)
+{
+  fs_fifo_free (fs, f, 0 /* clients attach fifos in slice 0 */);
+}
+
 void
 fifo_segment_detach_fifo (fifo_segment_t *fs, svm_fifo_t **f)
 {
@@ -956,6 +971,10 @@ fifo_segment_detach_fifo (fifo_segment_t *fs, svm_fifo_t **f)
   fsh_slice_collect_chunks (fs->h, fss, of->chunks_at_attach);
   of->chunks_at_attach = 0;
 
+  /* Collect hdr that was provided in return for the detached */
+  fss_fifo_free_list_push (fs->h, fss, of->hdr_at_attach);
+  of->hdr_at_attach = 0;
+
   clib_mem_bulk_free (pfss->fifos, *f);
   *f = 0;
 }
@@ -978,20 +997,19 @@ fifo_segment_attach_fifo (fifo_segment_t *fs, svm_fifo_t **f, u32 slice_index)
   if (nf->flags & SVM_FIFO_F_LL_TRACKED)
     pfss_fifo_add_active_list (pfss, nf);
 
-  /* Update allocated chunks for fifo segment and build list of
-   * chunks to be freed, i.e, returned to old slice at detach */
+  /* Allocate shared hdr and chunks to be collected at detach in return
+   * for those that are being attached now */
   of = *f;
+  of->hdr_at_attach = fsh_try_alloc_fifo_hdr (fs->h, fss);
 
   c = fs_chunk_ptr (fs->h, nf->shr->start_chunk);
   of->chunks_at_attach = pc = fsh_try_alloc_chunk (fs->h, fss, c->length);
-  c = fs_chunk_ptr (fs->h, c->next);
 
-  while (c)
+  while ((c = fs_chunk_ptr (fs->h, c->next)))
     {
       nc = fsh_try_alloc_chunk (fs->h, fss, c->length);
       pc->next = fs_chunk_sptr (fs->h, nc);
       pc = nc;
-      c = fs_chunk_ptr (fs->h, c->next);
     }
 
   nf->shr->slice_index = slice_index;
@@ -1541,8 +1559,8 @@ format_fifo_segment (u8 * s, va_list * args)
 	      format_memory_size, chunk_bytes, chunk_bytes,
 	      format_memory_size, est_chunk_bytes, est_chunk_bytes,
 	      format_memory_size, tracked_cached_bytes, tracked_cached_bytes);
-  s = format (s, "%Ufifo active: %u hdr free bytes: %U (%u) \n",
-	      format_white_space, indent + 2, fsh->n_active_fifos,
+  s = format (s, "%Ufifo active: %u hdr free: %u bytes: %U (%u) \n",
+	      format_white_space, indent + 2, fsh->n_active_fifos, free_fifos,
 	      format_memory_size, fifo_hdr, fifo_hdr);
   s = format (s, "%Usegment usage: %.2f%% (%U / %U) virt: %U status: %s\n",
 	      format_white_space, indent + 2, usage, format_memory_size,