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authorRoland Dreier <rolandd@cisco.com>2006-02-02 10:04:19 -0800
committerRoland Dreier <rolandd@cisco.com>2006-03-20 10:08:10 -0800
commit6dfc3901b04d1b79fa982d6de6d5af3b50c6cea8 (patch)
treef4918637c0d7c4b5c7fe4a4deb84e44ed3663dc6 /drivers/infiniband/hw/mthca/mthca_mad.c
parentc5bcbbb9fe00128d500c2f473d5ddc8d8c2c53a7 (diff)
IB/mthca: Add modify_device method to set node description
Add a modify_device method to mthca, which implements setting the node description. This makes the writable "node_desc" sysfs attribute work for Mellanox HCAs. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_mad.c')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_mad.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_mad.c b/drivers/infiniband/hw/mthca/mthca_mad.c
index 1229c604c6e..4ace6a392f4 100644
--- a/drivers/infiniband/hw/mthca/mthca_mad.c
+++ b/drivers/infiniband/hw/mthca/mthca_mad.c
@@ -109,6 +109,19 @@ static void smp_snoop(struct ib_device *ibdev,
}
}
+static void node_desc_override(struct ib_device *dev,
+ struct ib_mad *mad)
+{
+ if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
+ mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) &&
+ mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP &&
+ mad->mad_hdr.attr_id == IB_SMP_ATTR_NODE_DESC) {
+ mutex_lock(&to_mdev(dev)->cap_mask_mutex);
+ memcpy(((struct ib_smp *) mad)->data, dev->node_desc, 64);
+ mutex_unlock(&to_mdev(dev)->cap_mask_mutex);
+ }
+}
+
static void forward_trap(struct mthca_dev *dev,
u8 port_num,
struct ib_mad *mad)
@@ -207,8 +220,10 @@ int mthca_process_mad(struct ib_device *ibdev,
return IB_MAD_RESULT_FAILURE;
}
- if (!out_mad->mad_hdr.status)
+ if (!out_mad->mad_hdr.status) {
smp_snoop(ibdev, port_num, in_mad);
+ node_desc_override(ibdev, out_mad);
+ }
/* set return bit in status of directed route responses */
if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)