[PATCH v1 07/33] baseband/acc100: avoid mux for small inbound frames

[Hernan Vargas]

Update check_mux to avoid multiplexing small inbound frames.

Signed-off-by: Hernan Vargas <hernan.var...@intel.com>
---
 drivers/baseband/acc100/rte_acc100_pmd.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c 
b/drivers/baseband/acc100/rte_acc100_pmd.c
index 97e4078a24..fbd6605802 100644
--- a/drivers/baseband/acc100/rte_acc100_pmd.c
+++ b/drivers/baseband/acc100/rte_acc100_pmd.c
@@ -3551,20 +3551,25 @@ acc100_enqueue_enc_cb(struct rte_bbdev_queue_data 
*q_data,
 }
 
 /* Check we can mux encode operations with common FCW */
-static inline bool
+static inline int16_t
 check_mux(struct rte_bbdev_enc_op **ops, uint16_t num) {
        uint16_t i;
        if (num <= 1)
-               return false;
+               return 1;
        for (i = 1; i < num; ++i) {
                /* Only mux compatible code blocks */
                if (memcmp((uint8_t *)(&ops[i]->ldpc_enc) + ACC100_ENC_OFFSET,
                                (uint8_t *)(&ops[0]->ldpc_enc) +
                                ACC100_ENC_OFFSET,
                                ACC100_CMP_ENC_SIZE) != 0)
-                       return false;
+                       return i;
        }
-       return true;
+       /* Avoid multiplexing small inbound size frames */
+       int Kp = (ops[0]->ldpc_enc.basegraph == 1 ? 22 : 10) *
+                       ops[0]->ldpc_enc.z_c - ops[0]->ldpc_enc.n_filler;
+       if (Kp  <= ACC100_LIMIT_DL_MUX_BITS)
+               return 1;
+       return num;
 }
 
 /** Enqueue encode operations for ACC100 device in CB mode. */
@@ -3586,7 +3591,8 @@ acc100_enqueue_ldpc_enc_cb(struct rte_bbdev_queue_data 
*q_data,
                }
                avail--;
                enq = RTE_MIN(left, ACC100_MUX_5GDL_DESC);
-               if (check_mux(&ops[i], enq)) {
+               enq = check_mux(&ops[i], enq);
+               if (enq > 1) {
                        ret = enqueue_ldpc_enc_n_op_cb(q, &ops[i],
                                        desc_idx, enq);
                        if (ret < 0) {
-- 
2.37.1