ibmf_trans.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* This file implements the transaction processing logic common to send
* and receive transactions in IBMF.
*/
#include <sys/ib/mgt/ibmf/ibmf_impl.h>
extern int ibmf_trace_level;
/*
* ibmf_i_terminate_transaction():
* Do transaction termination processing.
*/
void
ibmf_i_terminate_transaction(ibmf_client_t *clientp, ibmf_msg_impl_t *msgimplp,
uint32_t status)
{
IBMF_TRACE_3(IBMF_TNF_DEBUG, DPRINT_L4,
ibmf_i_terminate_transaction_start, IBMF_TNF_TRACE, "",
"ibmf_i_terminate_transaction(): clientp = 0x%p, msgp = 0x%p, "
"status = 0x%x\n", tnf_opaque, clientp, clientp,
tnf_opaque, msg, msgimplp, tnf_uint, status, status);
ASSERT(MUTEX_HELD(&msgimplp->im_mutex));
msgimplp->im_msg_status = status;
/*
* Cancel the transaction timer. timer is probably only active if status
* was not success and this is a recv operation, but unset_timer() will
* check.
*/
ibmf_i_unset_timer(msgimplp, IBMF_TRANS_TIMER);
/*
* For unsolicited messages, do not notify the client
* if an error was encontered in the transfer.
* For solicited messages, call the transaction callback
* provided by the client in the message context.
*/
if (msgimplp->im_unsolicited == B_TRUE) {
msgimplp->im_trans_state_flags |= IBMF_TRANS_STATE_FLAG_DONE;
} else {
IBMF_TRACE_3(IBMF_TNF_DEBUG, DPRINT_L3,
ibmf_i_terminate_transaction, IBMF_TNF_TRACE, "",
"ibmf_i_terminate_transaction(): %s, "
"trans_state_flags = 0x%x, msg_flags = 0x%x\n",
tnf_string, msg, "solicted message callback",
tnf_opaque, trans_state_flags,
msgimplp->im_trans_state_flags,
tnf_opaque, flags, msgimplp->im_flags);
/* mark as recv_compl happened */
msgimplp->im_trans_state_flags |=
IBMF_TRANS_STATE_FLAG_RECV_DONE;
/*
* if it's a sequenced transaction, make sure send is done
* before marking as done
*/
if (((msgimplp->im_flags & IBMF_MSG_FLAGS_SEQUENCED) == 0) ||
(msgimplp->im_trans_state_flags &
IBMF_TRANS_STATE_FLAG_SEND_DONE)) {
msgimplp->im_trans_state_flags |=
IBMF_TRANS_STATE_FLAG_DONE;
}
}
IBMF_TRACE_0(IBMF_TNF_DEBUG, DPRINT_L4,
ibmf_i_terminate_transaction_end, IBMF_TNF_TRACE, "",
"ibmf_i_terminate_transaction() exit\n");
}
/*
* ibmf_i_notify_client():
* If the transaction is done, call the appropriate callback
*/
void
ibmf_i_notify_client(ibmf_msg_impl_t *msgimplp)
{
ibmf_client_t *clientp;
ibmf_msg_cb_t async_cb;
void *async_cb_arg;
IBMF_TRACE_1(IBMF_TNF_DEBUG, DPRINT_L4, ibmf_i_notify_client_start,
IBMF_TNF_TRACE, "", "ibmf_i_notify_client(): msgp = 0x%p\n",
tnf_opaque, msgimplp, msgimplp);
clientp = msgimplp->im_client;
/*
* message is removed so no more threads will find message;
* wait for any current clients to finish
*/
mutex_enter(&msgimplp->im_mutex);
ASSERT(msgimplp->im_trans_state_flags & IBMF_TRANS_STATE_FLAG_DONE);
/*
* If the message reference count is not zero, then some duplicate
* MAD has arrived for this message. The thread processing the MAD
* found the message on the client's list before this thread was able
* to remove the message from the list. Since, we should not notify
* the client of the transaction completion until all the threads
* working on this message have completed (we don't want the client
* to free the message while a thread is working on it), we let one
* of the other threads notify the client of the completion once
* the message reference count is zero.
*/
if (msgimplp->im_ref_count != 0) {
mutex_exit(&msgimplp->im_mutex);
IBMF_TRACE_1(IBMF_TNF_DEBUG, DPRINT_L3,
ibmf_i_notify_client_err, IBMF_TNF_TRACE,
"", "ibmf_i_notify_client(): %s\n",
tnf_string, msg, "message reference count != 0");
IBMF_TRACE_0(IBMF_TNF_DEBUG, DPRINT_L4,
ibmf_i_notify_client_end, IBMF_TNF_TRACE, "",
"ibmf_i_notify_client() exit\n");
return;
}
mutex_exit(&msgimplp->im_mutex);
/*
* Free up the UD dest resource so it is not tied down by
* the message in case the message is not freed immediately.
* Clean up the UD dest list as well so that excess UD dest
* resources are returned to the CI.
*/
if (msgimplp->im_ibmf_ud_dest != NULL) {
ibmf_i_free_ud_dest(clientp, msgimplp);
ibmf_i_clean_ud_dest_list(clientp->ic_myci, B_FALSE);
}
_NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*msgimplp))
if (msgimplp->im_unsolicited == B_TRUE) {
/*
* Do nothing if error status
*/
if (msgimplp->im_msg_status != IBMF_SUCCESS) {
if (msgimplp->im_qp_hdl == IBMF_QP_HANDLE_DEFAULT) {
mutex_enter(&clientp->ic_mutex);
IBMF_RECV_CB_CLEANUP(clientp);
mutex_exit(&clientp->ic_mutex);
} else {
ibmf_alt_qp_t *qpp =
(ibmf_alt_qp_t *)msgimplp->im_qp_hdl;
mutex_enter(&qpp->isq_mutex);
IBMF_ALT_RECV_CB_CLEANUP(qpp);
mutex_exit(&qpp->isq_mutex);
}
IBMF_TRACE_2(IBMF_TNF_NODEBUG, DPRINT_L1,
ibmf_i_notify_client_err, IBMF_TNF_ERROR, "",
"ibmf_i_notify_client(): %s, status = %d\n",
tnf_string, msg, "message status not success",
tnf_opaque, status, msgimplp->im_msg_status);
ibmf_i_free_msg(msgimplp);
IBMF_TRACE_0(IBMF_TNF_DEBUG, DPRINT_L4,
ibmf_i_notify_client_end, IBMF_TNF_TRACE, "",
"ibmf_i_notify_client() exit\n");
return;
}
/*
* Check to see if
* a callback has been resgistered with the client
* for this unsolicited message.
* If one has been registered, up the recvs active
* count to get the teardown routine to wait until
* this callback is complete.
*/
if (msgimplp->im_qp_hdl == IBMF_QP_HANDLE_DEFAULT) {
mutex_enter(&clientp->ic_mutex);
if ((clientp->ic_recv_cb == NULL) ||
(clientp->ic_flags & IBMF_CLIENT_TEAR_DOWN_CB)) {
IBMF_RECV_CB_CLEANUP(clientp);
mutex_exit(&clientp->ic_mutex);
ibmf_i_free_msg(msgimplp);
IBMF_TRACE_1(IBMF_TNF_NODEBUG, DPRINT_L1,
ibmf_i_notify_client_err, IBMF_TNF_ERROR,
"", "ibmf_i_notify_client(): %s\n",
tnf_string, msg,
"ibmf_tear_down_recv_cb already occurred");
IBMF_TRACE_0(IBMF_TNF_DEBUG, DPRINT_L4,
ibmf_i_notify_client_end,
IBMF_TNF_TRACE, "",
"ibmf_i_notify_client() exit\n");
return;
}
clientp->ic_msgs_alloced++;
mutex_enter(&clientp->ic_kstat_mutex);
IBMF_ADD32_KSTATS(clientp, msgs_alloced, 1);
mutex_exit(&clientp->ic_kstat_mutex);
async_cb = clientp->ic_recv_cb;
async_cb_arg = clientp->ic_recv_cb_arg;
mutex_exit(&clientp->ic_mutex);
async_cb((ibmf_handle_t)clientp, (ibmf_msg_t *)msgimplp,
async_cb_arg);
mutex_enter(&clientp->ic_mutex);
IBMF_RECV_CB_CLEANUP(clientp);
mutex_exit(&clientp->ic_mutex);
} else {
ibmf_alt_qp_t *qpp =
(ibmf_alt_qp_t *)msgimplp->im_qp_hdl;
mutex_enter(&qpp->isq_mutex);
if ((qpp->isq_recv_cb == NULL) ||
(qpp->isq_flags & IBMF_CLIENT_TEAR_DOWN_CB)) {
IBMF_ALT_RECV_CB_CLEANUP(qpp);
mutex_exit(&qpp->isq_mutex);
ibmf_i_free_msg(msgimplp);
IBMF_TRACE_1(IBMF_TNF_NODEBUG, DPRINT_L1,
ibmf_i_notify_client_err, IBMF_TNF_ERROR,
"", "ibmf_i_notify_client(): %s\n",
tnf_string, msg,
"ibmf_tear_down_recv_cb already occurred");
IBMF_TRACE_0(IBMF_TNF_DEBUG, DPRINT_L4,
ibmf_i_notify_client_end,
IBMF_TNF_TRACE, "",
"ibmf_i_notify_client() exit\n");
return;
}
async_cb = qpp->isq_recv_cb;
async_cb_arg = qpp->isq_recv_cb_arg;
mutex_exit(&qpp->isq_mutex);
mutex_enter(&clientp->ic_mutex);
clientp->ic_msgs_alloced++;
mutex_exit(&clientp->ic_mutex);
mutex_enter(&clientp->ic_kstat_mutex);
IBMF_ADD32_KSTATS(clientp, msgs_alloced, 1);
mutex_exit(&clientp->ic_kstat_mutex);
async_cb((ibmf_handle_t)clientp, (ibmf_msg_t *)msgimplp,
async_cb_arg);
mutex_enter(&qpp->isq_mutex);
IBMF_ALT_RECV_CB_CLEANUP(qpp);
mutex_exit(&qpp->isq_mutex);
}
} else {
/* Solicited transaction processing */
if (msgimplp->im_trans_cb == NULL) {
/* Processing for a blocking transaction */
mutex_enter(&msgimplp->im_mutex);
if (msgimplp->im_trans_state_flags &
IBMF_TRANS_STATE_FLAG_WAIT) {
IBMF_TRACE_2(IBMF_TNF_DEBUG, DPRINT_L3,
ibmf_i_notify_client, IBMF_TNF_TRACE, "",
"ibmf_i_notify_client(): %s, msg = 0x%p\n",
tnf_string, msg, "Awaking thread",
tnf_opaque, msgimplp, msgimplp);
cv_signal(&msgimplp->im_trans_cv);
} else {
IBMF_TRACE_2(IBMF_TNF_DEBUG, DPRINT_L3,
ibmf_i_notify_client, IBMF_TNF_TRACE, "",
"ibmf_i_notify_client(): %s, msg = 0x%p\n",
tnf_string, msg, "Notify client, no wait",
tnf_opaque, msgimplp, msgimplp);
}
msgimplp->im_trans_state_flags |=
IBMF_TRANS_STATE_FLAG_SIGNALED;
mutex_exit(&msgimplp->im_mutex);
} else {
/* Processing for a non-blocking transaction */
mutex_enter(&msgimplp->im_mutex);
msgimplp->im_flags &= ~IBMF_MSG_FLAGS_BUSY;
mutex_exit(&msgimplp->im_mutex);
IBMF_TRACE_2(IBMF_TNF_DEBUG, DPRINT_L3,
ibmf_i_notify_client, IBMF_TNF_TRACE, "",
"ibmf_i_notify_client(): %s, msg = 0x%p\n",
tnf_string, msg, "No thread is blocking",
tnf_opaque, msgimplp, msgimplp);
if (msgimplp->im_trans_cb != NULL) {
msgimplp->im_trans_cb(
(ibmf_handle_t)clientp,
(ibmf_msg_t *)msgimplp,
msgimplp->im_trans_cb_arg);
}
}
}
IBMF_TRACE_0(IBMF_TNF_DEBUG, DPRINT_L4, ibmf_i_notify_client_end,
IBMF_TNF_TRACE, "", "ibmf_i_notify_client() exit\n");
}
/*
* ibmf_i_notify_sequence()
* Checks for the need to create a termination context before
* notifying the client.
*/
void
ibmf_i_notify_sequence(ibmf_client_t *clientp, ibmf_msg_impl_t *msgimplp,
int msg_flags)
{
int status;
IBMF_TRACE_2(IBMF_TNF_DEBUG, DPRINT_L4,
ibmf_i_notify_sequence_start, IBMF_TNF_TRACE, "",
"ibmf_i_notify_sequence() enter, clientp = %p, msgimplp = %p\n",
tnf_opaque, clientp, clientp, tnf_opaque, msgimplp, msgimplp);
if (msg_flags & IBMF_MSG_FLAGS_TERMINATION) {
IBMF_TRACE_2(IBMF_TNF_DEBUG, DPRINT_L3, ibmf_i_notify_sequence,
IBMF_TNF_TRACE, "", "ibmf_i_notify_sequence(): %s, "
"msgimplp = %p\n", tnf_string, msg,
"IBMF_MSG_FLAGS_TERMINATION already set",
tnf_opaque, msgimplp, msgimplp);
return;
}
if (msg_flags & IBMF_MSG_FLAGS_SET_TERMINATION) {
/*
* In some cases, we need to check if the termination context
* needs to be set up for early termination of non-double-sided
* RMPP receiver transactions. In these cases we set up the
* termination context, and then notify the client.
* If the set up of the termination context fails, attempt to
* reverse state to the regular context, and set the response
* timer for the termination timeout and exit without notifying
* the client in this failure case. If the setting of the
* response timer fails, simply notify the client without
* going through the process of timing out in the response
* timer.
*/
status = ibmf_setup_term_ctx(clientp, msgimplp);
if (status != IBMF_SUCCESS) {
IBMF_TRACE_2(IBMF_TNF_DEBUG, DPRINT_L3,
ibmf_i_notify_sequence, IBMF_TNF_TRACE,
"", "ibmf_i_notify_sequence(): %s, "
"msgimplp = %p\n", tnf_string, msg,
"ibmf_setup_term_ctx() failed,"
"reversing to regular termination",
tnf_opaque, msgimplp, msgimplp);
mutex_enter(&msgimplp->im_mutex);
ibmf_i_set_timer(ibmf_i_recv_timeout, msgimplp,
IBMF_RESP_TIMER);
/*
* Set the flags cleared in
* ibmf_i_terminate_transaction()
*/
msgimplp->im_trans_state_flags &=
~IBMF_TRANS_STATE_FLAG_DONE;
msgimplp->im_trans_state_flags &=
~IBMF_TRANS_STATE_FLAG_RECV_DONE;
mutex_exit(&msgimplp->im_mutex);
/* Re-add the message to the list */
ibmf_i_client_add_msg(clientp, msgimplp);
} else {
/*
* The termination context has been
* set up. Notify the client that the
* regular message is done.
*/
ibmf_i_notify_client(msgimplp);
}
} else {
ibmf_i_notify_client(msgimplp);
}
IBMF_TRACE_1(IBMF_TNF_DEBUG, DPRINT_L4,
ibmf_i_notify_sequence_end, IBMF_TNF_TRACE, "",
"ibmf_i_notify_sequence() exit, msgimplp = %p\n",
tnf_opaque, msgimplp, msgimplp);
}