[PATCH 9/9] staging: fsl-dpaa2/eth: Change max number of Tx queues

Ioana Radulescu
2018-03-23T13:44:13Z

We use DPAA2_ETH_MAX_TX_QUEUES to dimension the array holding
information on Tx queues. At most, we can have one queue per cpu.

Until now we used the NR_CPUS macro to set the upper limit on number
of Tx queues. However, the platforms that the DPAA2 Ethernet driver
supports have at most 16 cores, whereas NR_CPUS is Kconfigurable and
can be much higher.

Avoid allocating memory we'll never use, by setting
DPAA2_ETH_MAX_TX_QUEUES to 16. Same for DPAA2_ETH_MAX_DPCONS.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
---
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h
index fc9a255..54cea2f 100644
--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h
@@ -251,11 +251,11 @@ struct dpaa2_eth_ch_stats {

/* Maximum number of queues associated with a DPNI */
#define DPAA2_ETH_MAX_RX_QUEUES 16
-#define DPAA2_ETH_MAX_TX_QUEUES NR_CPUS
+#define DPAA2_ETH_MAX_TX_QUEUES 16
#define DPAA2_ETH_MAX_QUEUES (DPAA2_ETH_MAX_RX_QUEUES + \
DPAA2_ETH_MAX_TX_QUEUES)

-#define DPAA2_ETH_MAX_DPCONS NR_CPUS
+#define DPAA2_ETH_MAX_DPCONS 16

enum dpaa2_eth_fq_type {
DPAA2_RX_FQ = 0,