forked from Minki/linux
net: mvneta: fix mvneta_config_rss on armada 3700
The mvneta Ethernet driver is used on a few different Marvell SoCs.
Some SoCs have per cpu interrupts for Ethernet events, the driver uses
a per CPU napi structure for this case. Some SoCs such as armada 3700
have a single interrupt for Ethernet events, the driver uses a global
napi structure for this case.
Current mvneta_config_rss() always operates the per cpu napi structure.
Fix it by operating a global napi for "single interrupt" case, and per
cpu napi structure for remaining cases.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Fixes: 2636ac3cc2
("net: mvneta: Add network support for Armada 3700 SoC")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -4107,13 +4107,18 @@ static int mvneta_config_rss(struct mvneta_port *pp)
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on_each_cpu(mvneta_percpu_mask_interrupt, pp, true);
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/* We have to synchronise on the napi of each CPU */
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for_each_online_cpu(cpu) {
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struct mvneta_pcpu_port *pcpu_port =
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per_cpu_ptr(pp->ports, cpu);
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if (!pp->neta_armada3700) {
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/* We have to synchronise on the napi of each CPU */
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for_each_online_cpu(cpu) {
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struct mvneta_pcpu_port *pcpu_port =
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per_cpu_ptr(pp->ports, cpu);
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napi_synchronize(&pcpu_port->napi);
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napi_disable(&pcpu_port->napi);
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napi_synchronize(&pcpu_port->napi);
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napi_disable(&pcpu_port->napi);
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}
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} else {
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napi_synchronize(&pp->napi);
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napi_disable(&pp->napi);
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}
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pp->rxq_def = pp->indir[0];
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@ -4130,12 +4135,16 @@ static int mvneta_config_rss(struct mvneta_port *pp)
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mvneta_percpu_elect(pp);
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spin_unlock(&pp->lock);
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/* We have to synchronise on the napi of each CPU */
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for_each_online_cpu(cpu) {
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struct mvneta_pcpu_port *pcpu_port =
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per_cpu_ptr(pp->ports, cpu);
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if (!pp->neta_armada3700) {
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/* We have to synchronise on the napi of each CPU */
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for_each_online_cpu(cpu) {
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struct mvneta_pcpu_port *pcpu_port =
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per_cpu_ptr(pp->ports, cpu);
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napi_enable(&pcpu_port->napi);
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napi_enable(&pcpu_port->napi);
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}
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} else {
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napi_enable(&pp->napi);
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}
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netif_tx_start_all_queues(pp->dev);
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