[PATCH net-next 10/10] qedf: Use hwfns and affin_hwfn_idx to get MSI-X vector index to use

[Michal Kalderon]

From: Chad Dupuis <cdup...@marvell.com>

MSI-X vector index is determined using qed device information and
affinity to use.

Signed-off-by: Chad Dupuis <cdup...@marvell.com>
Signed-off-by: Saurav Kashyap <skash...@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalde...@marvell.com>
---
 drivers/scsi/qedf/qedf_main.c | 39 ++++++++++++++++++++++++++++-----------
 1 file changed, 28 insertions(+), 11 deletions(-)

diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
index 9f9431a4cc0e..dc4cad1d5dcc 100644
--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -2086,16 +2086,21 @@ static void qedf_simd_int_handler(void *cookie)
 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
 {
        int i;
+       u16 vector_idx = 0;
+       u32 vector;
 
        if (qedf->int_info.msix_cnt) {
                for (i = 0; i < qedf->int_info.used_cnt; i++) {
-                       synchronize_irq(qedf->int_info.msix[i].vector);
-                       irq_set_affinity_hint(qedf->int_info.msix[i].vector,
-                           NULL);
-                       irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
-                           NULL);
-                       free_irq(qedf->int_info.msix[i].vector,
-                           &qedf->fp_array[i]);
+                       vector_idx = i * qedf->dev_info.common.num_hwfns +
+                               qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
+                       QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+                                 "Freeing IRQ #%d vector_idx=%d.\n",
+                                 i, vector_idx);
+                       vector = qedf->int_info.msix[vector_idx].vector;
+                       synchronize_irq(vector);
+                       irq_set_affinity_hint(vector, NULL);
+                       irq_set_affinity_notifier(vector, NULL);
+                       free_irq(vector, &qedf->fp_array[i]);
                }
        } else
                qed_ops->common->simd_handler_clean(qedf->cdev,
@@ -2108,11 +2113,19 @@ static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
 {
        int i, rc, cpu;
+       u16 vector_idx = 0;
+       u32 vector;
 
        cpu = cpumask_first(cpu_online_mask);
        for (i = 0; i < qedf->num_queues; i++) {
-               rc = request_irq(qedf->int_info.msix[i].vector,
-                   qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
+               vector_idx = i * qedf->dev_info.common.num_hwfns +
+                       qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
+               QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+                         "Requesting IRQ #%d vector_idx=%d.\n",
+                         i, vector_idx);
+               vector = qedf->int_info.msix[vector_idx].vector;
+               rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
+                                &qedf->fp_array[i]);
 
                if (rc) {
                        QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
@@ -2121,8 +2134,7 @@ static int qedf_request_msix_irq(struct qedf_ctx *qedf)
                }
 
                qedf->int_info.used_cnt++;
-               rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
-                   get_cpu_mask(cpu));
+               rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
                cpu = cpumask_next(cpu, cpu_online_mask);
        }
 
@@ -3068,6 +3080,11 @@ static int __qedf_probe(struct pci_dev *pdev, int mode)
                goto err1;
        }
 
+       QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
+                 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
+                 qedf->dev_info.common.num_hwfns,
+                 qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
+
        /* queue allocation code should come here
         * order should be
         *      slowpath_start
-- 
2.14.5