提交 1b090a48 编写于 作者: I Iyappan Subramanian 提交者: David S. Miller

drivers: net: xgene: fix ununiform latency across queues

This patch addresses ununiform latency across queues by adding
more queues to match with, upto number of CPU cores.

Also, number of interrupts are increased and the channel numbers
are reordered.
Signed-off-by: NIyappan Subramanian <isubramanian@apm.com>
Tested-by: NToan Le <toanle@apm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 46a22d29
......@@ -1234,6 +1234,13 @@ static int xgene_enet_get_irqs(struct xgene_enet_pdata *pdata)
for (i = 0; i < max_irqs; i++) {
ret = platform_get_irq(pdev, i);
if (ret <= 0) {
if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII) {
max_irqs = i;
pdata->rxq_cnt = max_irqs / 2;
pdata->txq_cnt = max_irqs / 2;
pdata->cq_cnt = max_irqs / 2;
break;
}
dev_err(dev, "Unable to get ENET IRQ\n");
ret = ret ? : -ENXIO;
return ret;
......@@ -1437,19 +1444,28 @@ static void xgene_enet_setup_ops(struct xgene_enet_pdata *pdata)
pdata->port_ops = &xgene_xgport_ops;
pdata->cle_ops = &xgene_cle3in_ops;
pdata->rm = RM0;
pdata->rxq_cnt = XGENE_NUM_RX_RING;
pdata->txq_cnt = XGENE_NUM_TX_RING;
pdata->cq_cnt = XGENE_NUM_TXC_RING;
if (!pdata->rxq_cnt) {
pdata->rxq_cnt = XGENE_NUM_RX_RING;
pdata->txq_cnt = XGENE_NUM_TX_RING;
pdata->cq_cnt = XGENE_NUM_TXC_RING;
}
break;
}
if (pdata->enet_id == XGENE_ENET1) {
switch (pdata->port_id) {
case 0:
pdata->cpu_bufnum = START_CPU_BUFNUM_0;
pdata->eth_bufnum = START_ETH_BUFNUM_0;
pdata->bp_bufnum = START_BP_BUFNUM_0;
pdata->ring_num = START_RING_NUM_0;
if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII) {
pdata->cpu_bufnum = X2_START_CPU_BUFNUM_0;
pdata->eth_bufnum = X2_START_ETH_BUFNUM_0;
pdata->bp_bufnum = X2_START_BP_BUFNUM_0;
pdata->ring_num = START_RING_NUM_0;
} else {
pdata->cpu_bufnum = START_CPU_BUFNUM_0;
pdata->eth_bufnum = START_ETH_BUFNUM_0;
pdata->bp_bufnum = START_BP_BUFNUM_0;
pdata->ring_num = START_RING_NUM_0;
}
break;
case 1:
if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII) {
......
......@@ -49,10 +49,10 @@
#define XGENE_ENET_MSS 1448
#define XGENE_MIN_ENET_FRAME_SIZE 60
#define XGENE_MAX_ENET_IRQ 8
#define XGENE_NUM_RX_RING 4
#define XGENE_NUM_TX_RING 4
#define XGENE_NUM_TXC_RING 4
#define XGENE_MAX_ENET_IRQ 16
#define XGENE_NUM_RX_RING 8
#define XGENE_NUM_TX_RING 8
#define XGENE_NUM_TXC_RING 8
#define START_CPU_BUFNUM_0 0
#define START_ETH_BUFNUM_0 2
......
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