IB/ehca: Forward event client-reregister-required to registered clients

This patch allows ehca to forward event client-reregister-required to
registered clients.  One such event is generated by a switch eg. after
its reboot.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 3f617b27b954..4c734ecef11d 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -62,6 +62,7 @@
 #define NEQE_PORT_NUMBER       EHCA_BMASK_IBM( 8, 15)
 #define NEQE_PORT_AVAILABILITY EHCA_BMASK_IBM(16, 16)
 #define NEQE_DISRUPTIVE        EHCA_BMASK_IBM(16, 16)
+#define NEQE_SPECIFIC_EVENT    EHCA_BMASK_IBM(16, 23)
 
 #define ERROR_DATA_LENGTH      EHCA_BMASK_IBM(52, 63)
 #define ERROR_DATA_TYPE        EHCA_BMASK_IBM( 0,  7)
@@ -354,6 +355,7 @@ static void parse_ec(struct ehca_shca *shca, u64 eqe)
 {
         u8 ec   = EHCA_BMASK_GET(NEQE_EVENT_CODE, eqe);
         u8 port = EHCA_BMASK_GET(NEQE_PORT_NUMBER, eqe);
+        u8 spec_event;
 
         switch (ec) {
         case 0x30: /* port availability change */
@@ -394,6 +396,16 @@ static void parse_ec(struct ehca_shca *shca, u64 eqe)
         case 0x33:  /* trace stopped */
                 ehca_err(&shca->ib_device, "Traced stopped.");
                 break;
+        case 0x34: /* util async event */
+                spec_event = EHCA_BMASK_GET(NEQE_SPECIFIC_EVENT, eqe);
+                if (spec_event == 0x80) /* client reregister required */
+                        dispatch_port_event(shca, port,
+                                            IB_EVENT_CLIENT_REREGISTER,
+                                            "client reregister req.");
+                else
+                        ehca_warn(&shca->ib_device, "Unknown util async "
+                                  "event %x on port %x", spec_event, port);
+                break;
         default:
                 ehca_err(&shca->ib_device, "Unknown event code: %x on %s.",
                          ec, shca->ib_device.name);