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qed*: Add iWARP 100g support

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Add iWARP engine affinity setting for supporting iWARP over 100g.
iWARP cannot be distinguished by the LLH from L2, hence the
engine division will affect L2 as well. For this reason we add
a parameter to devlink to determine the engine division.

Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Kalderon
2019-05-26 15:22:27 +03:00
committed by David S. Miller
parent 24e04879ab
commit 3576e99e08
3 changed files with 46 additions and 0 deletions
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13
drivers/infiniband/hw/qedr/main.c
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@@ -871,7 +871,16 @@ static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
dev->user_dpm_enabled = dev_info.user_dpm_enabled;
dev->rdma_type = dev_info.rdma_type;
dev->num_hwfns = dev_info.common.num_hwfns;
if (IS_IWARP(dev) && QEDR_IS_CMT(dev)) {
rc = dev->ops->iwarp_set_engine_affin(cdev, false);
if (rc) {
DP_ERR(dev, "iWARP is disabled over a 100g device Enabling it may impact L2 performance. To enable it run devlink dev param set <dev> name iwarp_cmt value true cmode runtime\n");
goto init_err;
}
}
dev->affin_hwfn_idx = dev->ops->common->get_affin_hwfn_idx(cdev);
dev->rdma_ctx = dev->ops->rdma_get_rdma_ctx(cdev);
dev->num_cnq = dev->ops->rdma_get_min_cnq_msix(cdev);
@@ -932,6 +941,10 @@ static void qedr_remove(struct qedr_dev *dev)
qedr_stop_hw(dev);
qedr_sync_free_irqs(dev);
qedr_free_resources(dev);
if (IS_IWARP(dev) && QEDR_IS_CMT(dev))
dev->ops->iwarp_set_engine_affin(dev->cdev, true);
ib_dealloc_device(&dev->ibdev);
}