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>

diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 3f617b27b9543658d901dd1de36caca52371f9e5..4c734ecef11dd3beafe047fe26a9b70cd978e341 100644 (file)
--- 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);