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bnxt_re: Implement the shutdown hook of the L2-RoCE driver interface

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When host is shutting down, it invokes the shutdown hook of the
L2 driver where it would attempt to free the MSI-X vectors, but would fail
because some vectors are held by the RoCE driver.
Implement the new hook in the L2 -> RoCE interface which will be invoked so that
the RoCE driver can unregister the device and free up the MSI-X vectors it had
claimed so that L2 can proceed with it's shutdown without failure.

Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Somnath Kotur 2017-10-25 09:12:30 +05:30 committed by Doug Ledford
parent 35fb2a88ed
commit 5455e73a76
1 changed files with 13 additions and 1 deletions
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14
drivers/infiniband/hw/bnxt_re/main.c
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@ -78,6 +78,7 @@ static struct list_head bnxt_re_dev_list = LIST_HEAD_INIT(bnxt_re_dev_list);
/* Mutex to protect the list of bnxt_re devices added */
static DEFINE_MUTEX(bnxt_re_dev_lock);
static struct workqueue_struct *bnxt_re_wq;
static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait);
/* for handling bnxt_en callbacks later */
static void bnxt_re_stop(void *p)
@ -92,11 +93,22 @@ static void bnxt_re_sriov_config(void *p, int num_vfs)
{
}
static void bnxt_re_shutdown(void *p)
{
struct bnxt_re_dev *rdev = p;
if (!rdev)
return;
bnxt_re_ib_unreg(rdev, false);
}
static struct bnxt_ulp_ops bnxt_re_ulp_ops = {
.ulp_async_notifier = NULL,
.ulp_stop = bnxt_re_stop,
.ulp_start = bnxt_re_start,
.ulp_sriov_config = bnxt_re_sriov_config
.ulp_sriov_config = bnxt_re_sriov_config,
.ulp_shutdown = bnxt_re_shutdown
};
/* RoCE -> Net driver */