staging: qlge: support force_coredump option for devlink health dump

With force_coredump module parameter set, devlink health dump will
reset the MPI RISC first which takes 5 secs to be finished.

Note that only NIC function that owns the firmware can do the
force_dumping. Otherwise devlink will receive an EPERM error.

Signed-off-by: Coiby Xu <coiby.xu@gmail.com>
Link: https://lore.kernel.org/r/20210123104613.38359-6-coiby.xu@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/qlge/qlge_devlink.c b/drivers/staging/qlge/qlge_devlink.c
index bf7d75e..c6ef516 100644 (file)
--- a/drivers/staging/qlge/qlge_devlink.c
+++ b/drivers/staging/qlge/qlge_devlink.c
@@ -56,10 +56,23 @@ static int qlge_reporter_coredump(struct devlink_health_reporter *reporter,
 
        struct qlge_adapter *qdev = devlink_health_reporter_priv(reporter);
        struct qlge_mpi_coredump *dump;
+       wait_queue_head_t wait;
 
        if (!netif_running(qdev->ndev))
                return 0;
 
+       if (test_bit(QL_FRC_COREDUMP, &qdev->flags)) {
+               if (qlge_own_firmware(qdev)) {
+                       qlge_queue_fw_error(qdev);
+                       init_waitqueue_head(&wait);
+                       wait_event_timeout(wait, 0, 5 * HZ);
+               } else {
+                       netif_err(qdev, ifup, qdev->ndev,
+                                 "Force Coredump failed because this NIC function doesn't own the firmware\n");
+                       return -EPERM;
+               }
+       }
+
        dump = kvmalloc(sizeof(*dump), GFP_KERNEL);
        if (!dump)
                return -ENOMEM;