linux-kernel - [PATCH net-next 3/5] net: dpaa: stop ignoring TX queues past the number of CPUs

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Message-Id: <20240710230025.46487-4-vladimir.oltean@nxp.com>
Date: Thu, 11 Jul 2024 02:00:23 +0300
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Breno Leitao <leitao@...ian.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Madalin Bucur <madalin.bucur@....com>,
	linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH net-next 3/5] net: dpaa: stop ignoring TX queues past the number of CPUs

dpaa_fq_setup() iterates through the queues allocated by dpaa_alloc_all_fqs()
and saved in &priv->dpaa_fq_list.

The allocation for FQ_TYPE_TX looks as follows:

	if (!dpaa_fq_alloc(dev, 0, dpaa_max_num_txqs(), list, FQ_TYPE_TX))
		goto fq_alloc_failed;

Thus, iterating again through FQ_TYPE_TX queues in dpaa_fq_setup() and
counting them will never yield an egress_cnt larger than the allocated
size, dpaa_max_num_txqs().

The comparison serves no purpose since it is always true; remove it.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 7b0317020c89..e52f4cd95f97 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -971,11 +971,7 @@ static int dpaa_fq_setup(struct dpaa_priv *priv,
 		case FQ_TYPE_TX:
 			dpaa_setup_egress(priv, fq, tx_port,
 					  &fq_cbs->egress_ern);
-			/* If we have more Tx queues than the number of cores,
-			 * just ignore the extra ones.
-			 */
-			if (egress_cnt < dpaa_max_num_txqs())
-				priv->egress_fqs[egress_cnt++] = &fq->fq_base;
+			priv->egress_fqs[egress_cnt++] = &fq->fq_base;
 			break;
 		case FQ_TYPE_TX_CONF_MQ:
 			priv->conf_fqs[conf_cnt++] = &fq->fq_base;
-- 
2.34.1