diff options
| author |   Roland Dreier <rolandd@cisco.com> | 2006-02-02 10:04:19 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-03-20 10:08:10 -0800 |
| commit | 6dfc3901b04d1b79fa982d6de6d5af3b50c6cea8 (patch) | |
| tree | f4918637c0d7c4b5c7fe4a4deb84e44ed3663dc6 /drivers/infiniband/hw/mthca/mthca_mad.c | |
| parent | IB: Allow userspace to set node description (diff) | |
| download | linux-dev-6dfc3901b04d1b79fa982d6de6d5af3b50c6cea8.tar.xz linux-dev-6dfc3901b04d1b79fa982d6de6d5af3b50c6cea8.zip | |
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.c | 17 |
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 1229c604c6e0..4ace6a392f41 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) |