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net: thunderx: Set max queue count taking XDP_TX into account

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[ Upstream commit 87de083857aa269fb171ef0b39696b2888361c58 ]

on T81 there are only 4 cores, hence setting max queue count to 4
would leave nothing for XDP_TX. This patch fixes this by doubling
max queue count in above scenarios.

Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: cjacob <cjacob@caviumnetworks.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sunil Goutham 2017-11-24 15:04:03 +03:00 committed by Greg Kroah-Hartman
parent 4ab1fcc7a5
commit 5132282f9c
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/cavium/thunder/nicvf_main.c
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@ -1832,6 +1832,11 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
nic->pdev = pdev;
nic->pnicvf = nic;
nic->max_queues = qcount;
/* If no of CPUs are too low, there won't be any queues left
* for XDP_TX, hence double it.
*/
if (!nic->t88)
nic->max_queues *= 2;
/* MAP VF's configuration registers */
nic->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);