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session: pre-alloc required dma batches

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Specify the number of max_batches when applying for dma config.
Skip this round when no batch available from vlib_dma_batch_new.

Type: improvement

Signed-off-by: Marvin Liu <yong.liu@intel.com>
Change-Id: Ic6e0acf81ba4fc3ed33aea6ac6990ef841021c59
This commit is contained in:
Marvin Liu
2023-03-14 23:56:31 +08:00
committed by Florin Coras
parent 738aba7b51
commit 48d2e15e3d
2 changed files with 3 additions and 0 deletions
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1
src/vnet/session/session.c
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@ -2023,6 +2023,7 @@ session_dma_completion_cb (vlib_main_t *vm, struct vlib_dma_batch *batch)
static void static void
session_prepare_dma_args (vlib_dma_config_t *args) session_prepare_dma_args (vlib_dma_config_t *args)
{ {
args->max_batches = 16;
args->max_transfers = DMA_TRANS_SIZE; args->max_transfers = DMA_TRANS_SIZE;
args->max_transfer_size = 65536; args->max_transfer_size = 65536;
args->features = 0; args->features = 0;

2
src/vnet/session/session_node.c
View File

@ -1936,6 +1936,8 @@ session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
if (wrk->trans_head == ((wrk->trans_tail + 1) & (wrk->trans_size - 1))) if (wrk->trans_head == ((wrk->trans_tail + 1) & (wrk->trans_size - 1)))
return 0; return 0;
wrk->batch = vlib_dma_batch_new (vm, wrk->config_index); wrk->batch = vlib_dma_batch_new (vm, wrk->config_index);
if (!wrk->batch)
return 0;
} }
/* /*