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IB/cm: Update XRC support based on XRC annex errata 

The XRC annex was updated to have XRC behave more like RD. Specifically,
the XRC TGT QPN moves from the local QPN to local EECN field.  Lookup of
SRQN is done using the REQ/REP protocol.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Sean Hefty 2011-08-02 11:08:22 -07:00 committed by Roland Dreier
parent d26a360b77
commit ef70044647
2 changed files with 26 additions and 8 deletions
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15
drivers/infiniband/core/cm.c
View File

@ -1605,7 +1605,6 @@ static void cm_format_rep(struct cm_rep_msg *rep_msg,
cm_format_mad_hdr(&rep_msg->hdr, CM_REP_ATTR_ID, cm_id_priv->tid);
rep_msg->local_comm_id = cm_id_priv->id.local_id;
rep_msg->remote_comm_id = cm_id_priv->id.remote_id;
cm_rep_set_local_qpn(rep_msg, cpu_to_be32(param->qp_num));
cm_rep_set_starting_psn(rep_msg, cpu_to_be32(param->starting_psn));
rep_msg->resp_resources = param->responder_resources;
cm_rep_set_target_ack_delay(rep_msg,
@ -1618,8 +1617,10 @@ static void cm_format_rep(struct cm_rep_msg *rep_msg,
rep_msg->initiator_depth = param->initiator_depth;
cm_rep_set_flow_ctrl(rep_msg, param->flow_control);
cm_rep_set_srq(rep_msg, param->srq);
cm_rep_set_local_qpn(rep_msg, cpu_to_be32(param->qp_num));
} else {
cm_rep_set_srq(rep_msg, 1);
cm_rep_set_local_eecn(rep_msg, cpu_to_be32(param->qp_num));
}
if (param->private_data && param->private_data_len)
@ -1669,7 +1670,7 @@ int ib_send_cm_rep(struct ib_cm_id *cm_id,
cm_id_priv->initiator_depth = param->initiator_depth;
cm_id_priv->responder_resources = param->responder_resources;
cm_id_priv->rq_psn = cm_rep_get_starting_psn(rep_msg);
cm_id_priv->local_qpn = cm_rep_get_local_qpn(rep_msg);
cm_id_priv->local_qpn = cpu_to_be32(param->qp_num & 0xFFFFFF);
out: spin_unlock_irqrestore(&cm_id_priv->lock, flags);
return ret;
@ -1740,7 +1741,7 @@ error: spin_unlock_irqrestore(&cm_id_priv->lock, flags);
}
EXPORT_SYMBOL(ib_send_cm_rtu);
static void cm_format_rep_event(struct cm_work *work)
static void cm_format_rep_event(struct cm_work *work, enum ib_qp_type qp_type)
{
struct cm_rep_msg *rep_msg;
struct ib_cm_rep_event_param *param;
@ -1749,7 +1750,7 @@ static void cm_format_rep_event(struct cm_work *work)
param = &work->cm_event.param.rep_rcvd;
param->remote_ca_guid = rep_msg->local_ca_guid;
param->remote_qkey = be32_to_cpu(rep_msg->local_qkey);
param->remote_qpn = be32_to_cpu(cm_rep_get_local_qpn(rep_msg));
param->remote_qpn = be32_to_cpu(cm_rep_get_qpn(rep_msg, qp_type));
param->starting_psn = be32_to_cpu(cm_rep_get_starting_psn(rep_msg));
param->responder_resources = rep_msg->initiator_depth;
param->initiator_depth = rep_msg->resp_resources;
@ -1817,7 +1818,7 @@ static int cm_rep_handler(struct cm_work *work)
return -EINVAL;
}
cm_format_rep_event(work);
cm_format_rep_event(work, cm_id_priv->qp_type);
spin_lock_irq(&cm_id_priv->lock);
switch (cm_id_priv->id.state) {
@ -1832,7 +1833,7 @@ static int cm_rep_handler(struct cm_work *work)
cm_id_priv->timewait_info->work.remote_id = rep_msg->local_comm_id;
cm_id_priv->timewait_info->remote_ca_guid = rep_msg->local_ca_guid;
cm_id_priv->timewait_info->remote_qpn = cm_rep_get_local_qpn(rep_msg);
cm_id_priv->timewait_info->remote_qpn = cm_rep_get_qpn(rep_msg, cm_id_priv->qp_type);
spin_lock(&cm.lock);
/* Check for duplicate REP. */
@ -1859,7 +1860,7 @@ static int cm_rep_handler(struct cm_work *work)
cm_id_priv->id.state = IB_CM_REP_RCVD;
cm_id_priv->id.remote_id = rep_msg->local_comm_id;
cm_id_priv->remote_qpn = cm_rep_get_local_qpn(rep_msg);
cm_id_priv->remote_qpn = cm_rep_get_qpn(rep_msg, cm_id_priv->qp_type);
cm_id_priv->initiator_depth = rep_msg->resp_resources;
cm_id_priv->responder_resources = rep_msg->initiator_depth;
cm_id_priv->sq_psn = cm_rep_get_starting_psn(rep_msg);

19
drivers/infiniband/core/cm_msgs.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2004 Intel Corporation. All rights reserved.
* Copyright (c) 2004, 2011 Intel Corporation. All rights reserved.
* Copyright (c) 2004 Topspin Corporation. All rights reserved.
* Copyright (c) 2004 Voltaire Corporation. All rights reserved.
*
@ -538,6 +538,23 @@ static inline void cm_rep_set_local_qpn(struct cm_rep_msg *rep_msg, __be32 qpn)
(be32_to_cpu(rep_msg->offset12) & 0x000000FF));
}
static inline __be32 cm_rep_get_local_eecn(struct cm_rep_msg *rep_msg)
{
return cpu_to_be32(be32_to_cpu(rep_msg->offset16) >> 8);
}
static inline void cm_rep_set_local_eecn(struct cm_rep_msg *rep_msg, __be32 eecn)
{
rep_msg->offset16 = cpu_to_be32((be32_to_cpu(eecn) << 8) |
(be32_to_cpu(rep_msg->offset16) & 0x000000FF));
}
static inline __be32 cm_rep_get_qpn(struct cm_rep_msg *rep_msg, enum ib_qp_type qp_type)
{
return (qp_type == IB_QPT_XRC_INI) ?
cm_rep_get_local_eecn(rep_msg) : cm_rep_get_local_qpn(rep_msg);
}
static inline __be32 cm_rep_get_starting_psn(struct cm_rep_msg *rep_msg)
{
return cpu_to_be32(be32_to_cpu(rep_msg->offset20) >> 8);