From: Chengchang Tang <tangchengch...@huawei.com>

The number of desc is a per queue configuration. But in the check function,
nb_txd & nb_rxd are used to check whether the desc_id is valid. nb_txd &
nb_rxd are the global configuration of number of desc. If the queue
configuration is changed by cmdline liks: "port config xx txq xx ring_size
xxx", the real value will be changed.

This patch use the real value to check whether the desc_id is valid. And if
these are not configured by user. It will use the default value to check
it, since the rte_eth_rx_queue_setup & rte_eth_tx_queue_setup will use a
default value to confiure the queue if nb_rx_desc or nb_tx_desc is zero.

Fixes: af75078fece3 ("first public release")
Cc: sta...@dpdk.org

Signed-off-by: Chengchang Tang <tangchengch...@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.hu...@huawei.com>
---
 app/test-pmd/config.c | 53 +++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 43 insertions(+), 10 deletions(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 882de2d..b7851c7 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -1891,22 +1891,55 @@ tx_queue_id_is_invalid(queueid_t txq_id)
 }
 
 static int
-rx_desc_id_is_invalid(uint16_t rxdesc_id)
+rx_desc_id_is_invalid(portid_t port_id, queueid_t rxq_id, uint16_t rxdesc_id)
 {
-       if (rxdesc_id < nb_rxd)
+       struct rte_port *port = &ports[port_id];
+       uint16_t ring_size;
+
+       /*
+        * When configure the rxq by rte_eth_rx_queue_setup with nb_rx_desc
+        * being 0, it will use a default value provided by PMDs to setup this
+        * rxq. If the default value is 0, it will use the
+        * RTE_ETH_DEV_FALLBACK_RX_RINGSIZE to setup this rxq.
+        */
+       if (port->nb_rx_desc[rxq_id])
+               ring_size = port->nb_rx_desc[rxq_id];
+       else if (port->dev_info.default_rxportconf.ring_size)
+               ring_size = port->dev_info.default_rxportconf.ring_size;
+       else
+               ring_size =  RTE_ETH_DEV_FALLBACK_RX_RINGSIZE;
+
+       if (rxdesc_id < ring_size)
                return 0;
-       printf("Invalid RX descriptor %d (must be < nb_rxd=%d)\n",
-              rxdesc_id, nb_rxd);
+       printf("Invalid RX descriptor %d (must be < ring_size=%d)\n",
+              rxdesc_id, ring_size);
        return 1;
 }
 
 static int
-tx_desc_id_is_invalid(uint16_t txdesc_id)
+tx_desc_id_is_invalid(portid_t port_id, queueid_t txq_id, uint16_t txdesc_id)
 {
-       if (txdesc_id < nb_txd)
+       struct rte_port *port = &ports[port_id];
+       uint16_t ring_size;
+
+       /*
+        * When configure the txq by rte_eth_tx_queue_setup with nb_tx_desc
+        * being 0, it will use a default value provided by PMDs to setup this
+        * txq. If the default value is 0, it will use the
+        * RTE_ETH_DEV_FALLBACK_TX_RINGSIZE to setup this txq.
+        */
+       if (port->nb_tx_desc[txq_id])
+               ring_size = port->nb_tx_desc[txq_id];
+       else if (port->dev_info.default_txportconf.ring_size)
+               ring_size = port->dev_info.default_txportconf.ring_size;
+       else
+               ring_size =  RTE_ETH_DEV_FALLBACK_RX_RINGSIZE;
+
+       if (txdesc_id < ring_size)
                return 0;
-       printf("Invalid TX descriptor %d (must be < nb_txd=%d)\n",
-              txdesc_id, nb_txd);
+
+       printf("Invalid TX descriptor %d (must be < ring_size=%d)\n",
+              txdesc_id, ring_size);
        return 1;
 }
 
@@ -2031,7 +2064,7 @@ rx_ring_desc_display(portid_t port_id, queueid_t rxq_id, 
uint16_t rxd_id)
                return;
        if (rx_queue_id_is_invalid(rxq_id))
                return;
-       if (rx_desc_id_is_invalid(rxd_id))
+       if (rx_desc_id_is_invalid(port_id, rxq_id, rxd_id))
                return;
        rx_mz = ring_dma_zone_lookup("rx_ring", port_id, rxq_id);
        if (rx_mz == NULL)
@@ -2048,7 +2081,7 @@ tx_ring_desc_display(portid_t port_id, queueid_t txq_id, 
uint16_t txd_id)
                return;
        if (tx_queue_id_is_invalid(txq_id))
                return;
-       if (tx_desc_id_is_invalid(txd_id))
+       if (tx_desc_id_is_invalid(port_id, txq_id, txd_id))
                return;
        tx_mz = ring_dma_zone_lookup("tx_ring", port_id, txq_id);
        if (tx_mz == NULL)
-- 
2.9.5


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