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Date: Mon, 26 Feb 2018 15:14:26 +0100 From: Antoine Tenart <antoine.tenart@...tlin.com> To: davem@...emloft.net Cc: Yan Markman <ymarkman@...vell.com>, mw@...ihalf.com, stefanc@...vell.com, thomas.petazzoni@...e-electrons.com, gregory.clement@...e-electrons.com, miquel.raynal@...e-electrons.com, nadavh@...vell.com, maxime.chevallier@...tlin.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH net-next 2/3] net: mvpp2: adjust gso stop wake thresholds From: Yan Markman <ymarkman@...vell.com> Adjust MVPP2_MAX_TSO_SEGS and stop_threshold/wake_threshold for better TXQ utilization and performance. Signed-off-by: Yan Markman <ymarkman@...vell.com> --- drivers/net/ethernet/marvell/mvpp2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c index 55300b1fe6c0..1a893ef70eab 100644 --- a/drivers/net/ethernet/marvell/mvpp2.c +++ b/drivers/net/ethernet/marvell/mvpp2.c @@ -498,7 +498,7 @@ * skb. As we need a maxium of two descriptors per fragments (1 header, 1 data), * multiply this value by two to count the maximum number of skb descs needed. */ -#define MVPP2_MAX_TSO_SEGS 300 +#define MVPP2_MAX_TSO_SEGS 100 #define MVPP2_MAX_SKB_DESCS (MVPP2_MAX_TSO_SEGS * 2 + MAX_SKB_FRAGS) /* Dfault number of RXQs in use */ @@ -5810,7 +5810,7 @@ static int mvpp2_txq_init(struct mvpp2_port *port, txq_pcpu->tso_headers = NULL; txq_pcpu->stop_threshold = txq->size - MVPP2_MAX_SKB_DESCS; - txq_pcpu->wake_threshold = txq_pcpu->stop_threshold / 2; + txq_pcpu->wake_threshold = txq_pcpu->stop_threshold - 100; txq_pcpu->tso_headers = dma_alloc_coherent(port->dev->dev.parent, -- 2.14.3
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