IB/mad: IBoE supports only QP1 (no QP0)
Since IBoE is using Ethernet as its link layer, there is no central
management entity so there is need for QP0. QP1 is still needed since
it handles communications between CM agents. This patch will skip QP0
and create only QP1 for IBoE ports.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index ef1304f..822cfdc 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -2598,6 +2598,9 @@
struct ib_mad_private *recv;
struct ib_mad_list_head *mad_list;
+ if (!qp_info->qp)
+ return;
+
while (!list_empty(&qp_info->recv_queue.list)) {
mad_list = list_entry(qp_info->recv_queue.list.next,
@@ -2639,6 +2642,9 @@
for (i = 0; i < IB_MAD_QPS_CORE; i++) {
qp = port_priv->qp_info[i].qp;
+ if (!qp)
+ continue;
+
/*
* PKey index for QP1 is irrelevant but
* one is needed for the Reset to Init transition
@@ -2680,6 +2686,9 @@
}
for (i = 0; i < IB_MAD_QPS_CORE; i++) {
+ if (!port_priv->qp_info[i].qp)
+ continue;
+
ret = ib_mad_post_receive_mads(&port_priv->qp_info[i], NULL);
if (ret) {
printk(KERN_ERR PFX "Couldn't post receive WRs\n");
@@ -2758,6 +2767,9 @@
static void destroy_mad_qp(struct ib_mad_qp_info *qp_info)
{
+ if (!qp_info->qp)
+ return;
+
ib_destroy_qp(qp_info->qp);
kfree(qp_info->snoop_table);
}
@@ -2773,6 +2785,7 @@
struct ib_mad_port_private *port_priv;
unsigned long flags;
char name[sizeof "ib_mad123"];
+ int has_smi;
/* Create new device info */
port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL);
@@ -2788,7 +2801,11 @@
init_mad_qp(port_priv, &port_priv->qp_info[0]);
init_mad_qp(port_priv, &port_priv->qp_info[1]);
- cq_size = (mad_sendq_size + mad_recvq_size) * 2;
+ cq_size = mad_sendq_size + mad_recvq_size;
+ has_smi = rdma_port_get_link_layer(device, port_num) == IB_LINK_LAYER_INFINIBAND;
+ if (has_smi)
+ cq_size *= 2;
+
port_priv->cq = ib_create_cq(port_priv->device,
ib_mad_thread_completion_handler,
NULL, port_priv, cq_size, 0);
@@ -2812,9 +2829,11 @@
goto error5;
}
- ret = create_mad_qp(&port_priv->qp_info[0], IB_QPT_SMI);
- if (ret)
- goto error6;
+ if (has_smi) {
+ ret = create_mad_qp(&port_priv->qp_info[0], IB_QPT_SMI);
+ if (ret)
+ goto error6;
+ }
ret = create_mad_qp(&port_priv->qp_info[1], IB_QPT_GSI);
if (ret)
goto error7;