IB/ipath: allow SMA to be disabled

This is useful for testing purposes.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c
index b9be0fd..fbda773 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_verbs.c
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.c
@@ -107,6 +107,10 @@ module_param_named(max_srq_wrs, ib_ipath_max_srq_wrs,
                   uint, S_IWUSR | S_IRUGO);
 MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support");
 
+static unsigned int ib_ipath_disable_sma;
+module_param_named(disable_sma, ib_ipath_disable_sma, uint, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(ib_ipath_disable_sma, "Disable the SMA");
+
 const int ib_ipath_state_ops[IB_QPS_ERR + 1] = {
        [IB_QPS_RESET] = 0,
        [IB_QPS_INIT] = IPATH_POST_RECV_OK,
@@ -354,6 +358,9 @@ static void ipath_qp_rcv(struct ipath_ibdev *dev,
        switch (qp->ibqp.qp_type) {
        case IB_QPT_SMI:
        case IB_QPT_GSI:
+               if (ib_ipath_disable_sma)
+                       break;
+               /* FALLTHROUGH */
        case IB_QPT_UD:
                ipath_ud_rcv(dev, hdr, has_grh, data, tlen, qp);
                break;