net/memif: remove extra check

eth_memif_tx_zc function is called only for S2M rings. Remove
additional code for M2S rings in this function.

Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Jakub Grajciar <jgrajcia@cisco.com>

diff --git a/drivers/net/memif/rte_eth_memif.c b/drivers/net/memif/rte_eth_memif.c
index 2a71a78..0b64e47 100644 (file)
--- a/drivers/net/memif/rte_eth_memif.c
+++ b/drivers/net/memif/rte_eth_memif.c
@@ -735,7 +735,6 @@ eth_memif_tx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
                rte_eth_devices[mq->in_port].process_private;
        memif_ring_t *ring = memif_get_ring_from_queue(proc_private, mq);
        uint16_t slot, n_free, ring_size, mask, n_tx_pkts = 0;
-       memif_ring_type_t type = mq->type;
        struct rte_eth_link link;
 
        if (unlikely((pmd->flags & ETH_MEMIF_FLAG_CONNECTED) == 0))
@@ -812,11 +811,8 @@ eth_memif_tx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
        }
 
 no_free_slots:
-       /* update ring pointers */
-       if (type == MEMIF_RING_S2M)
-               __atomic_store_n(&ring->head, slot, __ATOMIC_RELEASE);
-       else
-               __atomic_store_n(&ring->tail, slot, __ATOMIC_RELEASE);
+       /* ring type always MEMIF_RING_S2M */
+       __atomic_store_n(&ring->head, slot, __ATOMIC_RELEASE);
 
        /* Send interrupt, if enabled. */
        if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0) {