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avf: fix eat own tail issue on tx

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Change-Id: Ie14ca18bab47ac6765ff0799475d0c2a4d936f90
Signed-off-by: Damjan Marion <damarion@cisco.com>
This commit is contained in:
Damjan Marion
2019-02-22 17:25:00 +01:00
committed by Florin Coras
parent 0e3eb60f35
commit b1bfda2074
1 changed files with 7 additions and 3 deletions
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src/plugins/avf/output.c
+7 -3
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@@ -45,6 +45,9 @@ avf_tx_enqueue (vlib_main_t * vm, avf_txq_t * txq, u32 * buffers,
/* avoid ring wrap */
n_desc_left = txq->size - clib_max (txq->next, txq->n_enqueued + 8);
if (n_desc_left == 0)
return 0;
while (n_packets_left && n_desc_left)
{
u32 or_flags;
@@ -140,7 +143,7 @@ VNET_DEVICE_CLASS_TX_FN (avf_device_class) (vlib_main_t * vm,
avf_txq_t *txq = vec_elt_at_index (ad->txqs, qid % ad->num_queue_pairs);
u32 *buffers = vlib_frame_vector_args (frame);
u16 n_enq, n_left;
u16 n_retry = 5;
u16 n_retry = 2;
clib_spinlock_lock_if_init (&txq->lock);
@@ -158,10 +161,11 @@ retry:
if (slot == 0)
break;
complete_slot = slot[0];
if (avf_tx_desc_get_dtyp (txq->descs + complete_slot) != 0x0F)
if (avf_tx_desc_get_dtyp (txq->descs + slot[0]) != 0x0F)
break;
complete_slot = slot[0];
clib_ring_deq (txq->rs_slots);
}