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IB/cm: Add debug prints to ib_cm 

Add debug prints to the error paths in the connection manager control
flows, to help debug connection management problems.

Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Daniel Jurgens 2017-11-14 14:51:58 +02:00 committed by Jason Gunthorpe
parent 8b00914654
commit 119bf81793
1 changed files with 51 additions and 0 deletions
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51
drivers/infiniband/core/cm.c
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@ -1875,6 +1875,8 @@ static int cm_req_handler(struct cm_work *work)
listen_cm_id_priv = cm_match_req(work, cm_id_priv);
if (!listen_cm_id_priv) {
pr_debug("%s: local_id %d, no listen_cm_id_priv\n", __func__,
be32_to_cpu(cm_id->local_id));
ret = -EINVAL;
goto free_timeinfo;
}
@ -2032,6 +2034,8 @@ int ib_send_cm_rep(struct ib_cm_id *cm_id,
spin_lock_irqsave(&cm_id_priv->lock, flags);
if (cm_id->state != IB_CM_REQ_RCVD &&
cm_id->state != IB_CM_MRA_REQ_SENT) {
pr_debug("%s: local_comm_id %d, cm_id->state: %d\n", __func__,
be32_to_cpu(cm_id_priv->id.local_id), cm_id->state);
ret = -EINVAL;
goto out;
}
@ -2098,6 +2102,8 @@ int ib_send_cm_rtu(struct ib_cm_id *cm_id,
spin_lock_irqsave(&cm_id_priv->lock, flags);
if (cm_id->state != IB_CM_REP_RCVD &&
cm_id->state != IB_CM_MRA_REP_SENT) {
pr_debug("%s: local_id %d, cm_id->state %d\n", __func__,
be32_to_cpu(cm_id->local_id), cm_id->state);
ret = -EINVAL;
goto error;
}
@ -2205,6 +2211,8 @@ static int cm_rep_handler(struct cm_work *work)
cm_id_priv = cm_acquire_id(rep_msg->remote_comm_id, 0);
if (!cm_id_priv) {
cm_dup_rep_handler(work);
pr_debug("%s: remote_comm_id %d, no cm_id_priv\n", __func__,
be32_to_cpu(rep_msg->remote_comm_id));
return -EINVAL;
}
@ -2218,6 +2226,10 @@ static int cm_rep_handler(struct cm_work *work)
default:
spin_unlock_irq(&cm_id_priv->lock);
ret = -EINVAL;
pr_debug("%s: cm_id_priv->id.state: %d, local_comm_id %d, remote_comm_id %d\n",
__func__, cm_id_priv->id.state,
be32_to_cpu(rep_msg->local_comm_id),
be32_to_cpu(rep_msg->remote_comm_id));
goto error;
}
@ -2231,6 +2243,8 @@ static int cm_rep_handler(struct cm_work *work)
spin_unlock(&cm.lock);
spin_unlock_irq(&cm_id_priv->lock);
ret = -EINVAL;
pr_debug("%s: Failed to insert remote id %d\n", __func__,
be32_to_cpu(rep_msg->remote_comm_id));
goto error;
}
/* Check for a stale connection. */
@ -2248,6 +2262,10 @@ static int cm_rep_handler(struct cm_work *work)
IB_CM_REJ_STALE_CONN, CM_MSG_RESPONSE_REP,
NULL, 0);
ret = -EINVAL;
pr_debug("%s: Stale connection. local_comm_id %d, remote_comm_id %d\n",
__func__, be32_to_cpu(rep_msg->local_comm_id),
be32_to_cpu(rep_msg->remote_comm_id));
if (cur_cm_id_priv) {
cm_id = &cur_cm_id_priv->id;
ib_send_cm_dreq(cm_id, NULL, 0);
@ -2394,6 +2412,8 @@ int ib_send_cm_dreq(struct ib_cm_id *cm_id,
cm_id_priv = container_of(cm_id, struct cm_id_private, id);
spin_lock_irqsave(&cm_id_priv->lock, flags);
if (cm_id->state != IB_CM_ESTABLISHED) {
pr_debug("%s: local_id %d, cm_id->state: %d\n", __func__,
be32_to_cpu(cm_id->local_id), cm_id->state);
ret = -EINVAL;
goto out;
}
@ -2463,6 +2483,8 @@ int ib_send_cm_drep(struct ib_cm_id *cm_id,
if (cm_id->state != IB_CM_DREQ_RCVD) {
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
kfree(data);
pr_debug("%s: local_id %d, cm_idcm_id->state(%d) != IB_CM_DREQ_RCVD\n",
__func__, be32_to_cpu(cm_id->local_id), cm_id->state);
return -EINVAL;
}
@ -2528,6 +2550,9 @@ static int cm_dreq_handler(struct cm_work *work)
atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
counter[CM_DREQ_COUNTER]);
cm_issue_drep(work->port, work->mad_recv_wc);
pr_debug("%s: no cm_id_priv, local_comm_id %d, remote_comm_id %d\n",
__func__, be32_to_cpu(dreq_msg->local_comm_id),
be32_to_cpu(dreq_msg->remote_comm_id));
return -EINVAL;
}
@ -2570,6 +2595,9 @@ static int cm_dreq_handler(struct cm_work *work)
counter[CM_DREQ_COUNTER]);
goto unlock;
default:
pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
__func__, be32_to_cpu(cm_id_priv->id.local_id),
cm_id_priv->id.state);
goto unlock;
}
cm_id_priv->id.state = IB_CM_DREQ_RCVD;
@ -2673,6 +2701,8 @@ int ib_send_cm_rej(struct ib_cm_id *cm_id,
cm_enter_timewait(cm_id_priv);
break;
default:
pr_debug("%s: local_id %d, cm_id->state: %d\n", __func__,
be32_to_cpu(cm_id_priv->id.local_id), cm_id->state);
ret = -EINVAL;
goto out;
}
@ -2783,6 +2813,9 @@ static int cm_rej_handler(struct cm_work *work)
/* fall through */
default:
spin_unlock_irq(&cm_id_priv->lock);
pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
__func__, be32_to_cpu(cm_id_priv->id.local_id),
cm_id_priv->id.state);
ret = -EINVAL;
goto out;
}
@ -2846,6 +2879,9 @@ int ib_send_cm_mra(struct ib_cm_id *cm_id,
}
/* fall through */
default:
pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
__func__, be32_to_cpu(cm_id_priv->id.local_id),
cm_id_priv->id.state);
ret = -EINVAL;
goto error1;
}
@ -2947,6 +2983,9 @@ static int cm_mra_handler(struct cm_work *work)
counter[CM_MRA_COUNTER]);
/* fall through */
default:
pr_debug("%s local_id %d, cm_id_priv->id.state: %d\n",
__func__, be32_to_cpu(cm_id_priv->id.local_id),
cm_id_priv->id.state);
goto out;
}
@ -3727,6 +3766,7 @@ static void cm_work_handler(struct work_struct *_work)
ret = cm_timewait_handler(work);
break;
default:
pr_debug("cm_event.event: 0x%x\n", work->cm_event.event);
ret = -EINVAL;
break;
}
@ -3762,6 +3802,8 @@ static int cm_establish(struct ib_cm_id *cm_id)
ret = -EISCONN;
break;
default:
pr_debug("%s: local_id %d, cm_id->state: %d\n", __func__,
be32_to_cpu(cm_id->local_id), cm_id->state);
ret = -EINVAL;
break;
}
@ -3959,6 +4001,9 @@ static int cm_init_qp_init_attr(struct cm_id_private *cm_id_priv,
ret = 0;
break;
default:
pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
__func__, be32_to_cpu(cm_id_priv->id.local_id),
cm_id_priv->id.state);
ret = -EINVAL;
break;
}
@ -4006,6 +4051,9 @@ static int cm_init_qp_rtr_attr(struct cm_id_private *cm_id_priv,
ret = 0;
break;
default:
pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
__func__, be32_to_cpu(cm_id_priv->id.local_id),
cm_id_priv->id.state);
ret = -EINVAL;
break;
}
@ -4065,6 +4113,9 @@ static int cm_init_qp_rts_attr(struct cm_id_private *cm_id_priv,
ret = 0;
break;
default:
pr_debug("%s: local_id %d, cm_id_priv->id.state: %d\n",
__func__, be32_to_cpu(cm_id_priv->id.local_id),
cm_id_priv->id.state);
ret = -EINVAL;
break;
}