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Diffstat (limited to 'src/svm/message_queue.c')
-rw-r--r--src/svm/message_queue.c77
1 files changed, 57 insertions, 20 deletions
diff --git a/src/svm/message_queue.c b/src/svm/message_queue.c
index b381173c70b..e586841cdb1 100644
--- a/src/svm/message_queue.c
+++ b/src/svm/message_queue.c
@@ -38,33 +38,16 @@ svm_msg_q_ring_data (svm_msg_q_ring_t * ring, u32 elt_index)
}
svm_msg_q_t *
-svm_msg_q_alloc (svm_msg_q_cfg_t * cfg)
+svm_msg_q_init (void *base, svm_msg_q_cfg_t *cfg)
{
- svm_msg_q_ring_cfg_t *ring_cfg;
- uword rings_sz = 0, mq_sz;
svm_msg_q_ring_t *ring;
- u8 *base, *rings_ptr;
vec_header_t *vh;
- u32 vec_sz, q_sz;
svm_msg_q_t *mq;
+ u8 *rings_ptr;
+ u32 q_sz;
int i;
- ASSERT (cfg);
-
- vec_sz = vec_header_bytes (0) + sizeof (svm_msg_q_ring_t) * cfg->n_rings;
- for (i = 0; i < cfg->n_rings; i++)
- {
- if (cfg->ring_cfgs[i].data)
- continue;
- ring_cfg = &cfg->ring_cfgs[i];
- rings_sz += (uword) ring_cfg->nitems * ring_cfg->elsize;
- }
-
q_sz = sizeof (svm_queue_t) + cfg->q_nitems * sizeof (svm_msg_q_msg_t);
- mq_sz = sizeof (svm_msg_q_t) + vec_sz + rings_sz + q_sz;
- base = clib_mem_alloc_aligned (mq_sz, CLIB_CACHE_LINE_BYTES);
- if (!base)
- return 0;
mq = (svm_msg_q_t *) base;
mq->q = svm_queue_init (base + sizeof (svm_msg_q_t), cfg->q_nitems,
@@ -92,6 +75,60 @@ svm_msg_q_alloc (svm_msg_q_cfg_t * cfg)
return mq;
}
+uword
+svm_msg_q_size_to_alloc (svm_msg_q_cfg_t *cfg)
+{
+ svm_msg_q_ring_cfg_t *ring_cfg;
+ uword rings_sz = 0, mq_sz;
+ u32 vec_sz, q_sz;
+ int i;
+
+ ASSERT (cfg);
+
+ vec_sz = vec_header_bytes (0) + sizeof (svm_msg_q_ring_t) * cfg->n_rings;
+ for (i = 0; i < cfg->n_rings; i++)
+ {
+ if (cfg->ring_cfgs[i].data)
+ continue;
+ ring_cfg = &cfg->ring_cfgs[i];
+ rings_sz += (uword) ring_cfg->nitems * ring_cfg->elsize;
+ }
+
+ q_sz = sizeof (svm_queue_t) + cfg->q_nitems * sizeof (svm_msg_q_msg_t);
+ mq_sz = sizeof (svm_msg_q_t) + vec_sz + rings_sz + q_sz;
+
+ return mq_sz;
+}
+
+svm_msg_q_t *
+svm_msg_q_alloc (svm_msg_q_cfg_t *cfg)
+{
+ svm_msg_q_ring_cfg_t *ring_cfg;
+ uword rings_sz = 0, mq_sz;
+ u32 vec_sz, q_sz;
+ u8 *base;
+ int i;
+
+ ASSERT (cfg);
+
+ vec_sz = vec_header_bytes (0) + sizeof (svm_msg_q_ring_t) * cfg->n_rings;
+ for (i = 0; i < cfg->n_rings; i++)
+ {
+ if (cfg->ring_cfgs[i].data)
+ continue;
+ ring_cfg = &cfg->ring_cfgs[i];
+ rings_sz += (uword) ring_cfg->nitems * ring_cfg->elsize;
+ }
+
+ q_sz = sizeof (svm_queue_t) + cfg->q_nitems * sizeof (svm_msg_q_msg_t);
+ mq_sz = sizeof (svm_msg_q_t) + vec_sz + rings_sz + q_sz;
+ base = clib_mem_alloc_aligned (mq_sz, CLIB_CACHE_LINE_BYTES);
+ if (!base)
+ return 0;
+
+ return svm_msg_q_init (base, cfg);
+}
+
void
svm_msg_q_free (svm_msg_q_t * mq)
{