diff options
| author |   Jack Morgenstein <jackm@mellanox.co.il> | 2005-10-18 14:46:38 -0700 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2005-10-18 14:46:38 -0700 |
| commit | 7150bf8a98f14f1ba67e090ef2778004c746f465 (patch) | |
| tree | 6fd181880b24748b91029fddc629d1dd6f47d1c3 /drivers/infiniband/hw/mthca/mthca_mcg.c | |
| parent | [IB] Fail sysfs queries after device is unregistered (diff) | |
| download | linux-dev-7150bf8a98f14f1ba67e090ef2778004c746f465.tar.xz linux-dev-7150bf8a98f14f1ba67e090ef2778004c746f465.zip | |
[IB] mthca: Don't enter QP into MCG more than once.
Avoid entering a QP as member of a multicast group multiple times.
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_mcg.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_mcg.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_mcg.c b/drivers/infiniband/hw/mthca/mthca_mcg.c index 9a0612a9d304..b47ea7daf088 100644 --- a/drivers/infiniband/hw/mthca/mthca_mcg.c +++ b/drivers/infiniband/hw/mthca/mthca_mcg.c @@ -185,7 +185,12 @@ int mthca_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) } for (i = 0; i < MTHCA_QP_PER_MGM; ++i) - if (!(mgm->qp[i] & cpu_to_be32(1 << 31))) { + if (mgm->qp[i] == cpu_to_be32(ibqp->qp_num | (1 << 31))) { + mthca_dbg(dev, "QP %06x already a member of MGM\n", + ibqp->qp_num); + err = 0; + goto out; + } else if (!(mgm->qp[i] & cpu_to_be32(1 << 31))) { mgm->qp[i] = cpu_to_be32(ibqp->qp_num | (1 << 31)); break; } |