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authorDamjan Marion <damarion@cisco.com>2021-12-08 13:48:37 +0100
committerOle Tr�an <otroan@employees.org>2021-12-22 14:53:47 +0000
commit657936f665c18441bddcc2524bb3ad3dfe0e20bc (patch)
tree5bc34b648581228d6904bbb0a58540d0e5b5cd7f /src/plugins/memif/memif.c
parent4926cdd1bf27370ab9b254c9a9733bec0dc30896 (diff)
memif: refactor descriptor handling in the input node
Type: improvement Change-Id: I06130447b4e6f4726c4f5bffbe606385c45b8bd4 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins/memif/memif.c')
-rw-r--r--src/plugins/memif/memif.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/plugins/memif/memif.c b/src/plugins/memif/memif.c
index f8c5191b971..2d5866a9d0d 100644
--- a/src/plugins/memif/memif.c
+++ b/src/plugins/memif/memif.c
@@ -231,6 +231,7 @@ memif_int_fd_read_ready (clib_file_t * uf)
clib_error_t *
memif_connect (memif_if_t * mif)
{
+ memif_main_t *mm = &memif_main;
vlib_main_t *vm = vlib_get_main ();
vnet_main_t *vnm = vnet_get_main ();
clib_file_t template = { 0 };
@@ -238,6 +239,7 @@ memif_connect (memif_if_t * mif)
int i, j;
u32 n_txqs = 0, n_threads = vlib_get_n_threads ();
clib_error_t *err = NULL;
+ u8 max_log2_ring_sz = 0;
memif_log_debug (mif, "connect %u", mif->dev_instance);
@@ -272,6 +274,7 @@ memif_connect (memif_if_t * mif)
vec_foreach_index (i, mif->tx_queues)
{
memif_queue_t *mq = vec_elt_at_index (mif->tx_queues, i);
+ max_log2_ring_sz = clib_max (max_log2_ring_sz, mq->log2_ring_size);
mq->ring = mif->regions[mq->region].shm + mq->offset;
if (mq->ring->cookie != MEMIF_COOKIE)
@@ -301,6 +304,8 @@ memif_connect (memif_if_t * mif)
u32 qi;
int rv;
+ max_log2_ring_sz = clib_max (max_log2_ring_sz, mq->log2_ring_size);
+
mq->ring = mif->regions[mq->region].shm + mq->offset;
if (mq->ring->cookie != MEMIF_COOKIE)
{
@@ -343,6 +348,30 @@ memif_connect (memif_if_t * mif)
}
/* *INDENT-ON* */
+ if (1 << max_log2_ring_sz > vec_len (mm->per_thread_data[0].desc_data))
+ {
+ memif_per_thread_data_t *ptd;
+ int with_barrier = 1;
+
+ if (vlib_worker_thread_barrier_held ())
+ with_barrier = 0;
+
+ if (with_barrier)
+ vlib_worker_thread_barrier_sync (vm);
+
+ vec_foreach (ptd, mm->per_thread_data)
+ {
+ vec_validate_aligned (ptd->desc_data, pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (ptd->desc_len, pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (ptd->desc_status, pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ }
+ if (with_barrier)
+ vlib_worker_thread_barrier_release (vm);
+ }
+
mif->flags &= ~MEMIF_IF_FLAG_CONNECTING;
mif->flags |= MEMIF_IF_FLAG_CONNECTED;