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A few fixes for regressions introduced in 3.4-rc1:

Browse source 
- fix memory leak in mlx4
  - fix two problems with new MAD response generation code
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Merge tag 'ib-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband fixes from Roland Dreier:
 "A few fixes for regressions introduced in 3.4-rc1:
   - fix memory leak in mlx4
   - fix two problems with new MAD response generation code"

* tag 'ib-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mlx4: Fix memory leaks in ib_link_query_port()
  IB/mad: Don't send response for failed MADs
  IB/mad: Set 'D' bit in response for unhandled MADs
This commit is contained in:
Linus Torvalds 2012-04-26 15:35:35 -07:00
commit ebcf596d89
2 changed files with 6 additions and 4 deletions
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8
drivers/infiniband/core/mad.c
View file

@ -1854,6 +1854,8 @@ static bool generate_unmatched_resp(struct ib_mad_private *recv,
response->mad.mad.mad_hdr.method = IB_MGMT_METHOD_GET_RESP;
response->mad.mad.mad_hdr.status =
cpu_to_be16(IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB);
if (recv->mad.mad.mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
response->mad.mad.mad_hdr.status |= IB_SMP_DIRECTION;
return true;
} else {
@ -1869,6 +1871,7 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv,
struct ib_mad_list_head *mad_list;
struct ib_mad_agent_private *mad_agent;
int port_num;
int ret = IB_MAD_RESULT_SUCCESS;
mad_list = (struct ib_mad_list_head *)(unsigned long)wc->wr_id;
qp_info = mad_list->mad_queue->qp_info;
@ -1952,8 +1955,6 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv,
local:
/* Give driver "right of first refusal" on incoming MAD */
if (port_priv->device->process_mad) {
int ret;
ret = port_priv->device->process_mad(port_priv->device, 0,
port_priv->port_num,
wc, &recv->grh,
@ -1981,7 +1982,8 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv,
* or via recv_handler in ib_mad_complete_recv()
*/
recv = NULL;
} else if (generate_unmatched_resp(recv, response)) {
} else if ((ret & IB_MAD_RESULT_SUCCESS) &&
generate_unmatched_resp(recv, response)) {
agent_send_response(&response->mad.mad, &recv->grh, wc,
port_priv->device, port_num, qp_info->qp->qp_num);
}

2
drivers/infiniband/hw/mlx4/main.c
View file

@ -247,7 +247,7 @@ static int ib_link_query_port(struct ib_device *ibdev, u8 port,
err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port,
NULL, NULL, in_mad, out_mad);
if (err)
return err;
goto out;
/* Checking LinkSpeedActive for FDR-10 */
if (out_mad->data[15] & 0x1)