/* BEGIN_ICS_COPYRIGHT5 ****************************************

Copyright (c) 2015-2017, Intel Corporation

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      this list of conditions and the following disclaimer.
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 * ** END_ICS_COPYRIGHT5   ****************************************/

#include <cs_g.h>
#include <mai_g.h>
#include <mal_g.h>
#include <ib_macros.h>
#include <if3.h>
#include "opamgt_priv.h"
#include <ib_mad.h>
#include <ib_sa.h>
#include <iba/ib_pkt.h>
#include <iba/ib_mad.h>
#include <iba/ib_sm_priv.h>
#include <iba/public/statustext.h>
#include <iba/ib_rmpp.h>
#include <iba/stl_sm_priv.h>
#include <iba/stl_sa_priv.h>
#include <iba/stl_pm.h>
#include <iba/stl_pa_priv.h>

//==============================================================================

#define IB_ISSM_DEVICEPATH_MAXLEN 32

//==============================================================================

//==============================================================================

#define	IB_HANDLE2DEV(handle)		(( (handle) >> 8) & 0xFF)
#define	IB_HANDLE2PORT(handle)		(( (handle)     ) & 0xFF)

#define	IB_MAKEHANDLE(dev, port) \
	((((dev) & 0xff) << 8) | ((port) & 0xff))

#define	IB_FROMHANDLE(handle, dev, port) \
	dev  = IB_HANDLE2DEV(handle);        \
	port = IB_HANDLE2PORT(handle);

//==============================================================================

static uint8_t ib_truescale_oui[] = {OUI_TRUESCALE_0, OUI_TRUESCALE_1, OUI_TRUESCALE_2};

typedef struct
{
	FILE   *fp;
	Lock_t  lock;
} ib_issm_t;

static ib_issm_t ib_issm;

static struct omgt_class_args sm_class_args[] = {
	{ IB_BASE_VERSION, MAD_CV_SUBN_DR, 1, 
		.is_responding_client=1, .is_trap_client=1, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0 },
	{ IB_BASE_VERSION, MAD_CV_SUBN_LR, 1, 
		.is_responding_client=1, .is_trap_client=1, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0},
	{ STL_BASE_VERSION, MAD_CV_SUBN_DR, STL_SM_CLASS_VERSION, 
		.is_responding_client=1, .is_trap_client=1, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0 },
	{ STL_BASE_VERSION, MAD_CV_SUBN_LR, STL_SM_CLASS_VERSION, 
		.is_responding_client=1, .is_trap_client=1, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0 },
	{ STL_BASE_VERSION, MAD_CV_VENDOR_DBSYNC, STL_SA_CLASS_VERSION, 
		.oui=ib_truescale_oui, .use_methods=1, 
		.methods={ FE_MNGR_PROBE_CMD, FE_MNGR_CLOSE_CMD,
    	  FM_CMD_SHUTDOWN, SA_CM_GET, SA_CM_SET, SA_CM_GETTABLE }},
	{ STL_BASE_VERSION, MAD_CV_SUBN_ADM, STL_SA_CLASS_VERSION, 
		.oui=0, .use_methods=1, 
		.methods={ SA_CM_GET, SA_CM_SET, SA_CM_GETTABLE, 
				   SA_CM_GETTRACETABLE, SA_CM_GETMULTI, SA_CM_DELETE }},
	{ IB_BASE_VERSION, MAD_CV_SUBN_ADM, IB_SUBN_ADM_CLASS_VERSION, 
		.oui=0, .use_methods=1, 
		.methods={ SA_CM_GET, SA_CM_SET, SA_CM_GETTABLE, 
				   SA_CM_GETTRACETABLE, SA_CM_GETMULTI, SA_CM_DELETE }},
	{ 0 }
};

static struct omgt_class_args fe_class_args[] = {
	{ IB_BASE_VERSION, MAD_CV_VENDOR_FE, 1, 
		.kernel_rmpp=0, .oui=ib_truescale_oui, .use_methods=1, 
		.methods={ FE_MNGR_PROBE_CMD,
					FE_MNGR_CLOSE_CMD, FM_CMD_SHUTDOWN, RMPP_CMD_GET, RMPP_CMD_GETTABLE }},
	{ IB_BASE_VERSION, MAD_CV_VFI_PM, 1,
		.kernel_rmpp=0, .oui=ib_truescale_oui, .use_methods=1,
		.methods={ FE_CMD_RESP, RMPP_CMD_GET, RMPP_CMD_GETTABLE }},
	{ 0 }
};

static struct omgt_class_args fe_proc_class_args[] = {
	{ IB_BASE_VERSION, MAD_CV_VENDOR_FE, 1, 
		.kernel_rmpp=0, .oui=ib_truescale_oui, .use_methods=1, 
		.methods={ FE_MNGR_PROBE_CMD,
					FE_MNGR_CLOSE_CMD, FM_CMD_SHUTDOWN, RMPP_CMD_GET, RMPP_CMD_GETTABLE }},
	{ STL_BASE_VERSION, MAD_CV_VFI_PM, STL_PM_CLASS_VERSION, 
        .kernel_rmpp=0, .oui=ib_truescale_oui, .use_methods=1,
        .methods={ FE_CMD_RESP }},
	{ IB_BASE_VERSION, MAD_CV_SUBN_DR, 1, 
		.is_responding_client=0, .is_trap_client=0, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0 },
	{ IB_BASE_VERSION, MAD_CV_SUBN_LR, 1, 
		.is_responding_client=0, .is_trap_client=0, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0},
	{ STL_BASE_VERSION, MAD_CV_SUBN_DR, STL_SM_CLASS_VERSION, 
		.is_responding_client=0, .is_trap_client=0, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0 },
	{ STL_BASE_VERSION, MAD_CV_SUBN_LR, STL_SM_CLASS_VERSION, 
		.is_responding_client=0, .is_trap_client=0, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0 },
	{ STL_BASE_VERSION, MAD_CV_SUBN_ADM, STL_SA_CLASS_VERSION, 
		.is_responding_client=0, .is_trap_client=0, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0 },
	{ IB_BASE_VERSION, MAD_CV_SUBN_ADM, IB_SUBN_ADM_CLASS_VERSION, 
		.is_responding_client=0, .is_trap_client=0, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0 },
	{ 0 }
};

static struct omgt_class_args pm_class_args[] = {
	{ STL_BASE_VERSION, MAD_CV_VFI_PM, STL_PM_CLASS_VERSION, 
		.kernel_rmpp = 0, .oui=ib_truescale_oui, .use_methods=1, 
		.methods={ FE_MNGR_PROBE_CMD, FE_MNGR_CLOSE_CMD, FM_CMD_SHUTDOWN,
					STL_PA_CMD_GET, STL_PA_CMD_SET, STL_PA_CMD_GETTABLE }},
	{ STL_BASE_VERSION, MAD_CV_PERF, STL_PM_CLASS_VERSION, 
		.is_responding_client=0, .is_trap_client=0, .is_report_client=0, .kernel_rmpp=0, .oui=0, .use_methods=0},
	{ 0 }
};


int ib_instrumentJmMads = 0;

/** TODO: currently there is only one open to the opamgt later (translated into only one open file
 *  handle to the ib_umad driver) and shared by all the threads spawned in Esm/ib/src/ibaccess/smi/sm/sm_main.c,
 *  which is the reason behind the complicated filtering mechanism in the upper MAI layer. To streamline
 *  the operation, the field in struct mai_dc->hndl can be replaced with struct omgt_port * so that each
 *  thread that calls mai_open() can have a separate port open in opamgt (i.e., a separate file handle
 *  to the ib_umad driver): mai_open() -> mai_get_dc() -> ib_attach_sma(), the last function (ib_attach_sma)
 *  should call omgt_open_port_by_num(). Similarly, ib_detach_sma should call omgt_close_port() to close
 *  the corresponding port. In addition, all the sending/receiving function (ib_recv_sma, etc) should
 *  be modified to carrry the struct omgt_port * parameter install of the IBhandle parameter). Of course,
 *  the ib_init_devport() and ib_init_guid() should not be used any more or modified not to call the
 *  omgt_open_port_xx() function.
 *  Note: the xx_mai_to_wire() or xx_wire_to_mai function
 *  involve buffer copying, which is bad for performance.
 *  */
struct omgt_port *g_port_handle = NULL;

//==============================================================================

// We're hacking into MAI internals here.  In the case of local packets, we
// just call mai_mad_process to short-circuit the path.
extern int mai_mad_process(Mai_t *mad, int *filterMatch);

extern uint32_t smDebugPerf; 
extern uint32_t sm_debug;

//==============================================================================

static Status_t ib_mai_to_wire(Mai_t *mad, uint8_t *buf);
static Status_t stl_wire_to_mai(uint8_t *buf, Mai_t *mad, int len);
static void stl_mad_to_mai(MAD* mad, Mai_t *mai);
static Status_t stl_mai_to_wire(Mai_t *mad, uint8_t *buf, uint32_t *bufLen);

//==============================================================================
// ib_init_common
//==============================================================================
static Status_t ib_init_common(void)
{
	Status_t status;
	
	ib_issm.fp = NULL;
	status = vs_lock_init(&ib_issm.lock, VLOCK_FREE, VLOCK_THREAD);
	if (status != VSTATUS_OK) {
		IB_LOG_ERRORRC("can't initialize issm device lock; rc:", status);
		return status;
	}
	
	return VSTATUS_OK;
}

//==============================================================================
// ib_init_devport
//==============================================================================
Status_t
ib_init_devport(uint32_t *devp, uint32_t *portp, uint64_t *Guidp, struct omgt_params *session_params)
{
	OMGT_STATUS_T status;

	IB_ENTER(__func__, devp, portp, Guidp, 0);

	// Check if the port is opened or
	if (g_port_handle) {
		uint64_t port_guid = 0;
		int32_t hfi_num = -1;
		uint8_t port_num = 0;
		(void)omgt_port_get_port_guid(g_port_handle, &port_guid);
		(void)omgt_port_get_hfi_num(g_port_handle, &hfi_num);
		(void)omgt_port_get_hfi_port_num(g_port_handle, &port_num);
		IB_LOG_ERROR_FMT(__func__, "one port (%d/%d GUID 0x%.16"CS64"x) is already opened",
			hfi_num, port_num, port_guid);
		return VSTATUS_BUSY;
	}
	status = ib_init_common();
	if (status != VSTATUS_OK) {
		IB_EXIT(__func__, status);
		return status;
	}


	if (Guidp != NULL && *Guidp != 0ULL) {
		status = omgt_open_port_by_guid(&g_port_handle, *Guidp, session_params);
		if (status != FSUCCESS) {
			IB_LOG_ERROR_FMT(__func__,
				"Failed to bind to GUID 0x%.16"CS64"x; status: %u",
				*Guidp, status);
			IB_EXIT(__func__, VSTATUS_BAD);
			return VSTATUS_BAD;
		}
		// note that the opamgt interface uses 1-based devices
		if (devp != NULL) {
			(void)omgt_port_get_hfi_num(g_port_handle, (int32_t *)devp);
			(*devp)--;
		}
		if (portp != NULL) {
			uint8_t port_num = 0;
			(void)omgt_port_get_hfi_port_num(g_port_handle, &port_num);
			*portp = port_num;
		}
	} else if (devp != NULL && portp != NULL) {
		// note that the opamgt interface uses 1-based devices
		status = omgt_open_port_by_num(&g_port_handle, *devp + 1, *portp, session_params);
		if (status != FSUCCESS) {
			// PR 128290 - MWHEINZ - This is a bit of a hack. Some parts of
			// the stack use 0-based counting of ports and devices but other
			// parts use 1-based. We assume the caller of this function
			// is using zero-based counting, so we add 1 when we call
			// omgt_open_port_by_num(), but we also assume the user is
			// expecting a 1-based device number in their error messages.
			IB_LOG_ERROR_FMT(__func__,
				"Failed to bind to device %d, port %d; status: %u",
				*devp + 1, *portp, status);
			IB_EXIT(__func__, VSTATUS_BAD);
			return VSTATUS_BAD;
		}
		if (Guidp != NULL) {
			(void)omgt_port_get_port_guid(g_port_handle, Guidp);
		}
	} else {
		IB_LOG_ERROR_FMT(__func__,
			"Neither Guid nor device and port were supplied");
		IB_EXIT(__func__, VSTATUS_BAD);
		return VSTATUS_BAD;
	}

	IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// ib_refresh_devport
//==============================================================================
Status_t
ib_refresh_devport(void)
{
	IB_ENTER(__func__, 0, 0, 0, 0);
	
	if (omgt_mad_refresh_port_pkey(g_port_handle) < 0) {
		IB_LOG_ERROR_FMT(__func__,
		       "Failed to refresh UMAD pkeys");
		IB_EXIT(__func__, VSTATUS_BAD);
		return VSTATUS_BAD;
	}
	IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// ib_shutdown
//==============================================================================
Status_t ib_shutdown(void)
{
	IB_ENTER(__func__, 0, 0, 0, 0);
	
	ib_disable_is_sm();
	omgt_close_port(g_port_handle);
	g_port_handle = NULL;
	
	IB_EXIT(__func__, 0);
	return VSTATUS_OK;
}

//==============================================================================
// ib_register_sm
//==============================================================================
Status_t
ib_register_sm(int queue_size)
{
	FSTATUS status;

	status = omgt_bind_classes(g_port_handle, sm_class_args);
	if (status != FSUCCESS) {
		IB_LOG_ERROR("Failed to register management classes;",
					 status);
		IB_EXIT(__func__, status);
		return status;
	}

	IB_EXIT(__func__, status);
	return status;
}

//==============================================================================
// ib_register_fe
//==============================================================================
Status_t
ib_register_fe(int queue_size, uint8_t thread)
{
	FSTATUS status;

	IB_ENTER(__func__, 0, 0, 0, 0);

	status = omgt_bind_classes(g_port_handle, (thread) ? fe_class_args : fe_proc_class_args);
	if (status != FSUCCESS) {
		IB_LOG_ERROR("Failed to register FE management classes;",
					 status);
		IB_EXIT(__func__, status);
		return status;
	}

	IB_EXIT(__func__, status);
	return status;
}


//==============================================================================
// ib_register_pm
//==============================================================================
Status_t
ib_register_pm(int queue_size)
{
	FSTATUS status;
	
	IB_ENTER(__func__, 0, 0, 0, 0);

	status = omgt_bind_classes(g_port_handle, pm_class_args);
	if (status != FSUCCESS) {
		IB_LOG_ERROR("Failed to register PM management classes;",
					 status);
		IB_EXIT(__func__, status);
		return status;
	}

	IB_EXIT(__func__, status);
	return status;
}



//==============================================================================
static void
dump_mad(uint8_t *buf, int len, char *prefix)
{
	int i;
	char s[1024], *s0 = s;
	memset(s, 0, sizeof(s));
	for (i = 0; i < len; ++i) {
		sprintf(s0, "%02x", *(buf + i)); s0 += 2;
		if (i % 4 == 3) { sprintf(s0, " "); s0 += 1; }
		if (i % 16 == 15) { IB_LOG_INFINI_INFO_FMT( __func__, "%s%s", prefix, s); s0 = s; memset(s, 0, sizeof(s)); }
	}
}

//==============================================================================
// ib_recv_sma
//==============================================================================
Status_t
ib_recv_sma(IBhandle_t handle, Mai_t *mai, uint64_t timeout)
{
   FSTATUS  status; 
   Status_t rc; 
   uint8_t  *buf = NULL; 
   size_t   len = 0; 
   int      dev, port; 
   int      issmi; 
   struct omgt_mad_addr	addr;
   
   IB_ENTER(__func__, handle, mai, timeout, 0); 
   
   IB_FROMHANDLE(handle, dev, port); 
   
   // wait for inbound mad, no timeout
   memset (&addr, 0, sizeof(addr));
   retry:
   do {
	  status = omgt_recv_mad_alloc(g_port_handle, &buf, &len, timeout, &addr);
   } 
   while (status == FNOT_DONE);
    
   // FSUCCESS - got a packet
   // FTIMEOUT - wait for response timed out, get header of our request
   // FREJECT - unexpected error processing a previous send or its response
   // 				get back at least header of our request
   if (status != FSUCCESS && status != FTIMEOUT && status != FREJECT) {
      // unexpected problem getting packets
      IB_LOG_ERRORSTR("Recieved SMA status:", iba_fstatus_msg(status)); 
      IB_EXIT(__func__, VSTATUS_BAD); 
      return VSTATUS_BAD;
   }

   if (len < sizeof(MAD_COMMON)) {
	   // if too small we can't deal with it and must discard it
	   if (buf) 
		   free(buf); 
	   IB_LOG_ERROR_FMT(__func__, "bad size: %lu status: %s", (unsigned long)len, iba_fstatus_msg(status));
	   goto retry; 
   }
#ifdef DEBUG
   else if (len > sizeof(MAD_COMMON) + STL_MAD_PAYLOAD_SIZE) {
	   // unexpected, we'll ignore the extra bytes of payload
	   IB_LOG_INFO_FMT(__func__, "large size: %lu status: %s", (unsigned long)len, iba_fstatus_msg(status));
   }
#endif
   
   // transfer STL packet to MAI structure   
   rc = stl_wire_to_mai(buf, mai, len); 
   free(buf); 
   
   if (status == FTIMEOUT || status == FREJECT) {
      // extern const char *iba_fstatus_msg(int);
      // printf("omgt_recv TYPE_ERROR: status=%s class=0x%x attr=0x%x method=0x%x\n",
      // 			iba_fstatus_msg(status),mai->base.mclass, mai->base.aid, mai->base.method);
      // this is a packet we tried to send but failed to send or
      // failed to get a response for
      mai->type = MAI_TYPE_ERROR; 
      
      // added info message as part of PR 115443 to show that the request timed out
      if (status == FTIMEOUT && sm_debug && smDebugPerf) {
         IB_LOG_INFINI_INFO_FMT(__func__, "FTIMEOUT of packet status=%s class=0x%x attr=0x%x method=0x%x TID=0x%.16"CS64"X\n", 
                                iba_fstatus_msg(status), mai->base.mclass, mai->base.aid, mai->base.method, mai->base.tid);
      }
   }
   
   if (rc != VSTATUS_OK) {
      IB_LOG_ERRORRC("Error converting MAD from wire format; rc:", rc); 
      IB_EXIT(__func__, rc); 
      return rc;
   }
   
   // SMP's are SMI, all else is GSI
   issmi = ((mai->base.mclass == MAD_CV_SUBN_LR || mai->base.mclass == MAD_CV_SUBN_DR)
            ? 1 : 0); 
   
   // fill in core MAI structure
   mai->dev     = dev; 
   mai->port    = port; 
   mai->qp      = issmi ? 0 : 1; 
   mai->active |=(MAI_ACT_DEV | MAI_ACT_PORT | MAI_ACT_QP); 
   
   // fill in packet header data
   mai->addrInfo.qkey  = addr.qkey; 
   mai->addrInfo.srcqp = addr.qpn;  
   mai->addrInfo.destqp = mai->qp; 
   mai->addrInfo.pkey   = addr.pkey; 
   mai->addrInfo.sl     = addr.sl; 

   if(mai->base.mclass == MAD_CV_SUBN_DR && ((DRStlSmp_t*)(mai->data))->DrSLID == STL_LID_PERMISSIVE && ((DRStlSmp_t*)(mai->data))->DrSLID == STL_LID_PERMISSIVE){
      mai->addrInfo.slid = STL_LID_PERMISSIVE;
      mai->addrInfo.dlid = STL_LID_PERMISSIVE;
   } else {
      mai->addrInfo.slid = addr.lid;
	  mai->addrInfo.dlid = addr.lid;
   }
   
   /*
   if (qp == 1) 
       IB_LOG_WARN_FMT( __func__, "SL is %d (qp=%d, pkey=0x%x, slid= %d)", mai->addrInfo.sl, mai->qp, addr.pkey, mai->addrInfo.slid);
   */
   
   mai->active    |=MAI_ACT_ADDRINFO;
   
   if (ib_instrumentJmMads
       && mai->base.mclass == 0x03 && mai->base.aid == 0xffb2) {
      IB_LOG_INFINI_INFO_FMT(__func__, 
                             "Received: mclass 0x%02x method 0x%02x aid 0x%04x amod 0x%08x", 
                             mai->base.mclass, mai->base.method, mai->base.aid, mai->base.amod); 
      dump_mad(mai->data, (IB_SA_FULL_HEADER_SIZE + IB_SAMAD_DATA_COUNT), "  ");
   }
   
   IB_EXIT(__func__, VSTATUS_OK); 
   return VSTATUS_OK; 
}

//==============================================================================
// ib_send_sma
//==============================================================================
Status_t
ib_send_sma(IBhandle_t handle, Mai_t * mai, uint64_t timeout)
{
	FSTATUS  status;
	Status_t rc;
	uint8_t  buf[sizeof(Mai_t)];
	int      filterMatch;
	int adjusted_timeout;
	struct omgt_mad_addr	addr;
	
	IB_ENTER(__func__, handle, mai, 0, 0);
	
	ASSERT(mai != NULL);
	
	if (mai->type == MAI_TYPE_INTERNAL) {
		IB_LOG_VERBOSE_FMT(__func__, "local delivery for MAD to 0x%08x on QP %d",
		       mai->addrInfo.dlid, mai->qp);
		// for local delivery
		(void)mai_mad_process(mai, &filterMatch);
		IB_EXIT(__func__, VSTATUS_OK);
		return VSTATUS_OK;
	}
	
	if (  ib_instrumentJmMads
	   && mai->base.mclass == 0x03 && mai->base.aid == 0xffb2) {
		IB_LOG_INFINI_INFO_FMT( __func__,
			"Sent: mclass 0x%02x method 0x%02x aid 0x%04x amod 0x%08x",
			mai->base.mclass, mai->base.method, mai->base.aid, mai->base.amod);
		dump_mad(mai->data, sizeof(mai->data), "  ");
	}

	rc = ib_mai_to_wire(mai, buf);
	if (rc != VSTATUS_OK) {
		IB_LOG_ERRORRC("Error converting MAD to wire format; rc:", rc);
		IB_EXIT(__func__, rc);
		return rc;
	}
	
	// only send a timeout that is 90% of what the caller thinks it should be.
	// this is to give OFED a moment to clear the MAD off the send list before
	// the caller retries.  without this, the caller's retry might be rejected
	// as a duplicate if it comes in too quickly
	// TBD - once all callers fixed, use timeout as given
	adjusted_timeout = (int)(timeout * 9 / 10 * VTIMER_1_MILLISEC / VTIMER_1S);
	if (adjusted_timeout <= 0 && timeout > 0)
		adjusted_timeout=1;
	memset(&addr, 0, sizeof(addr));
	addr.lid = mai->addrInfo.dlid;
	addr.qpn = mai->addrInfo.destqp;
	addr.qkey = mai->addrInfo.qkey;
	addr.pkey = mai->addrInfo.pkey;
	addr.sl = mai->addrInfo.sl;
	status = omgt_send_mad2(g_port_handle, (void*)buf, IB_MAX_MAD_DATA, &addr, adjusted_timeout, 0);
	if (status != FSUCCESS) {
		if (mai->addrInfo.srcqp != 1) {
			IB_LOG_INFO("Error sending packet via OPENIB interface; status:", status);
		} else {
			IB_LOG_INFO_FMT(__func__,
		       "Error sending packet via OPENIB interface; status: %u (sl= %d, pkey= 0x%x)", 
				status, mai->addrInfo.sl, mai->addrInfo.pkey);
		}
		IB_EXIT(__func__, VSTATUS_BAD);
		return VSTATUS_BAD;
	}
	
	IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// stl_send_sma
//==============================================================================
Status_t
stl_send_sma(IBhandle_t handle, Mai_t * mai, uint64_t timeout)
{
	FSTATUS  status;
	Status_t rc;
    uint32_t bufLen = 0;
	uint8_t  buf[sizeof(Mai_t)];
	int      filterMatch;
	int adjusted_timeout;
	struct omgt_mad_addr	addr;
	
	IB_ENTER(__func__, handle, mai, 0, 0);
	
	ASSERT(mai != NULL);
	
	if (mai->type == MAI_TYPE_INTERNAL) {
		IB_LOG_VERBOSE_FMT(__func__, "local delivery for MAD to 0x%08x on QP %d",
		       mai->addrInfo.dlid, mai->qp);
		// for local delivery
		(void)mai_mad_process(mai, &filterMatch);
		IB_EXIT(__func__, VSTATUS_OK);
		return VSTATUS_OK;
	}
	
	if (  ib_instrumentJmMads
	   && mai->base.mclass == 0x03 && mai->base.aid == 0xffb2) {
		IB_LOG_INFINI_INFO_FMT( __func__,
			"Sent: mclass 0x%02x method 0x%02x aid 0x%04x amod 0x%08x",
			mai->base.mclass, mai->base.method, mai->base.aid, mai->base.amod);
		dump_mad(mai->data, sizeof(mai->data), "  ");
	}

	rc = stl_mai_to_wire(mai, buf, &bufLen);
	if (rc != VSTATUS_OK) {
		IB_LOG_ERRORRC("converting MAD to wire format; rc:", rc);
		IB_EXIT(__func__, rc);
		return rc;
	}
	
	// only send a timeout that is 90% of what the caller thinks it should be.
	// this is to give OFED a moment to clear the MAD off the send list before
	// the caller retries.  without this, the caller's retry might be rejected
	// as a duplicate if it comes in too quickly
	// TBD - once all callers fixed, use timeout as given
	adjusted_timeout = (int)(timeout * 9 / 10 * VTIMER_1_MILLISEC / VTIMER_1S);
	if (adjusted_timeout <= 0 && timeout > 0)
		adjusted_timeout=1;

	memset(&addr, 0, sizeof(addr));
	addr.lid = mai->addrInfo.dlid;
	addr.qpn = mai->addrInfo.destqp;
	addr.qkey = mai->addrInfo.qkey;
	addr.pkey = mai->addrInfo.pkey;
	addr.sl = mai->addrInfo.sl;
	//IB_LOG_INFINI_INFO_FMT(__func__, "Sending MAD of size %d bytes", bufLen);
	status = omgt_send_mad2(g_port_handle, (void*)buf, bufLen, &addr, adjusted_timeout, 0);
	if (status != FSUCCESS) {
		if (mai->addrInfo.srcqp != 1) {
			IB_LOG_INFO("Error sending packet via OPENIB interface; status:", status);
		} else {
			IB_LOG_INFO_FMT(__func__,
		       "Error sending packet via OPENIB interface; status: %u (sl= %d, pkey= 0x%x)", 
				status, mai->addrInfo.sl, mai->addrInfo.pkey);
		}
		IB_EXIT(__func__, VSTATUS_BAD);
		return VSTATUS_BAD;
	}
	
	IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// ib_attach_sma
//==============================================================================
Status_t
ib_attach_sma(int16_t dev, int8_t port, uint32_t qpn,
              IBhandle_t *handlep, uint8_t *nodeTypep)
{
	FSTATUS status;
	uint8_t type;
	
	IB_ENTER(__func__, dev, port, qpn, 0);
	
	if (handlep != NULL)
		*handlep = IB_MAKEHANDLE(dev, port);
	
	if (nodeTypep != NULL)
	{
		status = omgt_port_get_node_type(g_port_handle, &type);
		if (status == FSUCCESS)
			*nodeTypep = type;
		else
		{
			IB_LOG_WARN("failed to get node type; status:", status);
			IB_EXIT(__func__, VSTATUS_BAD);
			return VSTATUS_BAD;
		}
	}
		
	IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// ib_detach_sma
//==============================================================================
Status_t
ib_detach_sma(IBhandle_t handle)
{
	return VSTATUS_OK;
}

//==============================================================================
// ib_init_sma
//==============================================================================
Status_t
ib_init_sma(uint32_t maxMadBuffers)
{
	return VSTATUS_OK;
}

//==============================================================================
// ib_term_sma
//==============================================================================
Status_t
ib_term_sma(void)
{
	return VSTATUS_OK;
}

//==============================================================================
// ib_shutdown_all
//==============================================================================
void
ib_shutdown_all(void)
{
}

//==============================================================================
// ib_enable_is_sm
//==============================================================================
Status_t ib_enable_is_sm(void)
{
	Status_t status;
	FSTATUS rc;
	char dev[IB_ISSM_DEVICEPATH_MAXLEN+1];
	
	IB_ENTER(__func__, 0, 0, 0, 0);
	
	status = vs_lock(&ib_issm.lock);
	if (status != VSTATUS_OK) {
		vs_unlock(&ib_issm.lock);
		IB_LOG_WARNRC("failed to acquire issm lock; rc:", status);
		IB_EXIT(__func__, status);
		return status;
	}
	
	rc = omgt_get_issm_device(g_port_handle, dev, IB_ISSM_DEVICEPATH_MAXLEN);
	if (rc != FSUCCESS) {
		IB_LOG_WARN("failed to resolve ISSM device name; status:", status);
		IB_EXIT(__func__, VSTATUS_BAD);
		return VSTATUS_BAD;
	}
	
	// if already open, silently skip
	if (ib_issm.fp == NULL) {
		ib_issm.fp = fopen(dev, "rb");
		if (ib_issm.fp == NULL) {
			vs_unlock(&ib_issm.lock);
			IB_LOG_WARN0("failed to open issm device");
			IB_EXIT(__func__, VSTATUS_BAD);
			return VSTATUS_BAD;
		}
	}
	
	vs_unlock(&ib_issm.lock);
	
	IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// ib_disable_is_sm
//==============================================================================
Status_t ib_disable_is_sm(void)
{
	Status_t status;
	IB_ENTER(__func__, 0, 0, 0, 0);
	
	status = vs_lock(&ib_issm.lock);
	if (status != VSTATUS_OK) {
		IB_LOG_WARNRC("failed to acquire issm lock; rc:", status);
		IB_EXIT(__func__, status);
		return status;
	}
	
	if (ib_issm.fp != NULL) {
		fclose(ib_issm.fp);
		ib_issm.fp = NULL;
	}
	
	vs_unlock(&ib_issm.lock);
	
	IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// stl_mad_to_mai  
//==============================================================================
static void stl_mad_to_mai(MAD* mad, Mai_t *mai) 
{ 
   mai->base.bversion = mad->common.BaseVersion; 
   mai->base.mclass = mad->common.MgmtClass; 
   mai->base.cversion = mad->common.ClassVersion; 
   mai->base.method = mad->common.mr.AsReg8;    
   if (mad->common.MgmtClass == MCLASS_SM_DIRECTED_ROUTE) {
      mai->base.status = mad->common.u.DR.s.Status; 
      mai->base.hopCount = mad->common.u.DR.HopCount; 
      mai->base.hopPointer = mad->common.u.DR.HopPointer; 
   } else 
      mai->base.status = mad->common.u.NS.Status.AsReg16;
   mai->base.tid = mad->common.TransactionID; 
   mai->base.aid = mad->common.AttributeID; 
   mai->base.amod = mad->common.AttributeModifier;   
}

//==============================================================================
// ib_mai_to_wire  
//==============================================================================
static Status_t
ib_mai_to_wire(Mai_t *mad, uint8_t *buf)
{
	int       isDrouted;
	uint32_t  mask = 0;
	
	IB_ENTER(__func__, mad, buf, 0, 0);

	// Validate the obvious parameters 
	if (mad == NULL) {
		IB_LOG_ERROR0("Invalid parameter: 'mad'");
		IB_EXIT(__func__, VSTATUS_ILLPARM);
		return VSTATUS_ILLPARM;
	}

	// Make sure we have a MAD header 
	mask = MAI_ACT_TYPE;
	if ((mad->active & mask) != mask) {
		IB_LOG_ERROR0("MAI_ACT_TYPE not active!");
		IB_EXIT(__func__, VSTATUS_INVALID_MADT);
		return VSTATUS_INVALID_MADT;
	}

	// Validate the type of MAD 
	switch (mad->type) {
	case MAI_TYPE_EXTERNAL:
		IB_LOG_INFO("Type is MAD", mad->type);
		// MADs require these fields 
		mask = MAI_ACT_ADDRINFO;
		if ((mad->active & mask) != mask) {
			IB_LOG_ERROR("Invalid Mai_t:", mad->active);
			IB_EXIT(__func__, VSTATUS_INVALID_MAD);
			return VSTATUS_INVALID_MAD;
		}
		break;
	default:
		IB_LOG_ERROR("Invalid MAD type:", mad->type);
		IB_EXIT(__func__, VSTATUS_INVALID_TYPE);
		return VSTATUS_INVALID_TYPE;
	}

	// Figure out about Direct Routed or LID routed 
	isDrouted = 0;		/* Assume we are LID routed */
	if (mad->base.mclass == MAD_CV_SUBN_DR)
		isDrouted = 1;

	// Setup reasonable defaults
	// Check for 'Reserved' values in management class 
	if (   mad->base.mclass == 0    || mad->base.mclass == 2
	   || (mad->base.mclass >= 0x50 && mad->base.mclass <= 0x80)
	   ||  mad->base.mclass >= 0x82)
	{
		IB_LOG_ERROR("Reserved management class:",
					 mad->base.mclass);
		IB_EXIT(__func__, VSTATUS_INVALID_MCLASS);
		return VSTATUS_INVALID_MCLASS;
	}
	
	mad->base.bversion = MAD_BVERSION;
	mad->base.rsvd3    = 0;

	// copy MAD base header
	if (mad->active & MAI_ACT_BASE) {
		// Display the base header 
		if (IB_LOG_IS_INTERESTED(VS_LOG_INFO)) {
		IB_LOG_INFO("Base BaseVersion  ", mad->base.bversion);
		IB_LOG_INFO("     MgmtClass    ", mad->base.mclass);
		IB_LOG_INFO("     ClassVersion ", mad->base.cversion);
		IB_LOG_INFO("     Method       ", mad->base.method);
		IB_LOG_INFO("     Status       ", mad->base.status);
		IB_LOG_INFO("     HopPointer   ", mad->base.hopPointer);
		IB_LOG_INFO("     HopCount     ", mad->base.hopCount);
		IB_LOG_INFOLX("     TID          ", mad->base.tid & 0xffffffffu);
		IB_LOG_INFO("     AttributeID  ", mad->base.aid);
		IB_LOG_INFO("     AttributeMod ", mad->base.amod);
		IB_LOG_INFO_FMT(__func__,"FullTID: 0x%016"CS64"x", mad->base.tid);
		}

		if (isDrouted) {
			// clear status and ensure return bit is set if necessary
			mad->base.status = mad->base.method == MAD_CM_GET_RESP
			                   ? MAD_DR_RETURN : MAD_DR_INITIAL;
		}
		
		memcpy(buf, &mad->base, sizeof(mad->base));
		(void)BSWAP_MAD_HEADER((MAD *)buf); 
	}

	// Copy data to the end of the wire buffer 
	if (!(mad->active & MAI_ACT_DATA) && mad->datasize <= 0) {
		IB_LOG_ERROR("datasize size indeterminate:", mad->datasize);
		IB_EXIT(__func__, VSTATUS_INVALID_MADLEN);
		return VSTATUS_INVALID_MADLEN;
	} else {
		// we are constrained to send the number of bytes of the supported
		// payload at all times 
		if (mad->datasize && (mad->datasize != IB_MAD_PAYLOAD_SIZE)) {
			IB_LOG_ERROR("datasize out of range:", mad->datasize);
			IB_EXIT(__func__, VSTATUS_TOO_LARGE);
			return VSTATUS_TOO_LARGE;
		} else {
			// MAI_ACT_DATA not active; send the payload balance
			mad->datasize = IB_MAD_PAYLOAD_SIZE;
		}

		memcpy(buf + sizeof(MAD_COMMON), mad->data, mad->datasize);

		if (isDrouted) {
			// magic numbers: DR LIDs are 32 bytes into a DR SMP header and
			//                are 2 bytes long each
			*(uint16_t*)(buf + 32) = hton16(*(uint16_t*)(buf + 32));
			*(uint16_t*)(buf + 34) = hton16(*(uint16_t*)(buf + 34));
		}
	}

	// VENDOR MAD HACK:
	// We use SA MAD headers for vendor classes, but the new vendor range
	// requires a specific header with an OUI field 37 bytes into the MAD.
	// In the SA header, this would be in the middle of the SM Key.  Since
	// we're not using anything past the RMPP header for vendor traffic, we'll
	// just write the OUI directly into the MAD.
	if (  mad->base.mclass >= IBA_VENDOR_RANGE2_START
	   && mad->base.mclass <= IBA_VENDOR_RANGE2_END)
		memcpy(buf + 37, ib_truescale_oui, 3);
	// END HORRIBLE HORRIBLE HACK

	IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// stl_mai_to_wire  
//==============================================================================
static Status_t
stl_mai_to_wire(Mai_t *mad, uint8_t *buf, uint32_t *bufLen)
{
   int       isDrouted; 
   uint32_t  mask = 0; 
   
   IB_ENTER(__func__, mad, buf, 0, 0);
   
   // Validate the obvious parameters 
   if (mad == NULL) {
      IB_LOG_ERROR0("Invalid parameter: 'mad'"); 
      IB_EXIT(__func__, VSTATUS_ILLPARM); 
      return VSTATUS_ILLPARM;
   }
   
   // Make sure we have a MAD header 
   mask = MAI_ACT_TYPE; 
   if ((mad->active & mask) != mask) {
      IB_LOG_ERROR0("MAI_ACT_TYPE not active!"); 
      IB_EXIT(__func__, VSTATUS_INVALID_MADT); 
      return VSTATUS_INVALID_MADT;
   }
   
   // Validate the type of MAD 
   switch (mad->type) {
   case MAI_TYPE_EXTERNAL:
      IB_LOG_INFO("Type is MAD", mad->type); 
      // MADs require these fields 
      mask = MAI_ACT_ADDRINFO;
      if ((mad->active & mask) != mask) {
         IB_LOG_ERROR("Invalid Mai_t:", mad->active); 
         IB_EXIT(__func__, VSTATUS_INVALID_MAD); 
         return VSTATUS_INVALID_MAD;
      }
      break; 
   default:
      IB_LOG_ERROR("Invalid MAD type:", mad->type); 
      IB_EXIT(__func__, VSTATUS_INVALID_TYPE); 
      return VSTATUS_INVALID_TYPE;
   }
   
   // Figure out about Direct Routed or LID routed 
   isDrouted = 0;      /* Assume we are LID routed */
   if (mad->base.mclass == MAD_CV_SUBN_DR) 
      isDrouted = 1; 
   
   // Setup reasonable defaults
   // Check for 'Reserved' values in management class 
   if (mad->base.mclass == 0    || mad->base.mclass == 2
       || (mad->base.mclass >= 0x50 && mad->base.mclass <= 0x80)
       ||  mad->base.mclass >= 0x82) {
      IB_LOG_ERROR("Reserved management class:", 
                   mad->base.mclass); 
      IB_EXIT(__func__, VSTATUS_INVALID_MCLASS); 
      return VSTATUS_INVALID_MCLASS;
   }
   
   mad->base.bversion = STL_BASE_VERSION; 
   mad->base.rsvd3    = 0; 
   
   // copy MAD base header
   if (mad->active & MAI_ACT_BASE) {
      // Display the base header 
      if (IB_LOG_IS_INTERESTED(VS_LOG_INFO)) {
         IB_LOG_INFO("Base BaseVersion  ", mad->base.bversion); 
         IB_LOG_INFO("     MgmtClass    ", mad->base.mclass); 
         IB_LOG_INFO("     ClassVersion ", mad->base.cversion); 
         IB_LOG_INFO("     Method       ", mad->base.method); 
         IB_LOG_INFO("     Status       ", mad->base.status); 
         IB_LOG_INFO("     HopPointer   ", mad->base.hopPointer); 
         IB_LOG_INFO("     HopCount     ", mad->base.hopCount); 
         IB_LOG_INFOLX("     TID          ", mad->base.tid & 0xffffffffu); 
         IB_LOG_INFO("     AttributeID  ", mad->base.aid); 
         IB_LOG_INFO("     AttributeMod ", mad->base.amod); 
         IB_LOG_INFO_FMT(__func__, "FullTID: 0x%016"CS64"x", mad->base.tid);
      }
     
      if (isDrouted) {
         // clear status and ensure return bit is set if necessary
         mad->base.status = mad->base.method == MAD_CM_GET_RESP
            ? MAD_DR_RETURN : MAD_DR_INITIAL;
      }

      memcpy(buf, &mad->base, sizeof(mad->base));
      (void)BSWAP_MAD_HEADER((MAD *)buf); 
   }
   
   // Copy data to the end of the wire buffer 
   if (!(mad->active & MAI_ACT_DATA) && mad->datasize <= 0) {
       IB_LOG_ERROR("datasize size indeterminate:", mad->datasize); 
       IB_EXIT(__func__, VSTATUS_INVALID_MADLEN); 
       return VSTATUS_INVALID_MADLEN;
   } else {
       if (mad->datasize) {
           // assume the datasize field is valid
           if (mad->datasize > STL_MAD_PAYLOAD_SIZE) {
               IB_LOG_ERROR("datasize out of range:", mad->datasize); 
               IB_EXIT(__func__, VSTATUS_TOO_LARGE); 
               return VSTATUS_TOO_LARGE;
           }
       } else {
           // in order to handle requests from legacy code, check validity of
           // the datasize field.  if not valid then, set the datasize to max payload size;
           // otherwise datasize field is valid indicating a payload with no data.
           if (!(mad->active & MAI_ACT_DATASIZE)) 
               mad->datasize = STL_MAD_PAYLOAD_SIZE;
       }
       
       *bufLen = sizeof(mad->base) + mad->datasize;      
       memcpy(buf + sizeof(mad->base), mad->data, mad->datasize); 
       
       if (isDrouted) {
           STL_SMP *smp = (STL_SMP *)buf; 
           
#if CPU_LE
           smp->M_Key = ntoh64(smp->M_Key); 
           smp->SmpExt.DirectedRoute.DrSLID = ntoh32(smp->SmpExt.DirectedRoute.DrSLID); 
           smp->SmpExt.DirectedRoute.DrDLID = ntoh32(smp->SmpExt.DirectedRoute.DrDLID); 
#endif
       }
   }
   
   // VENDOR MAD HACK:
   // We use SA MAD headers for vendor classes, but the new vendor range
   // requires a specific header with an OUI field 37 bytes into the MAD.
   // In the SA header, this would be in the middle of the SM Key.  Since
   // we're not using anything past the RMPP header for vendor traffic, we'll
   // just write the OUI directly into the MAD.
   if (mad->base.mclass >= IBA_VENDOR_RANGE2_START
       && mad->base.mclass <= IBA_VENDOR_RANGE2_END) {
	 memcpy(buf + 37, ib_truescale_oui, 3); 
   }
   // END HORRIBLE HORRIBLE HACK
   
   IB_EXIT(__func__, VSTATUS_OK);
	return VSTATUS_OK;
}

//==============================================================================
// stl_wire_to_mai  
//==============================================================================
static Status_t
stl_wire_to_mai(uint8_t *buf, Mai_t *mad, int len)
{ 
   IB_ENTER(__func__, 0, 0, 0, 0); 
   
   // Validate the obvious parameters 
   if (mad == NULL) {
      IB_LOG_ERROR0("NULL mad pointer passed"); 
      IB_EXIT(__func__, VSTATUS_ILLPARM); 
      return VSTATUS_ILLPARM;
   }
   if (buf == NULL) {
      IB_LOG_ERROR0("NULL buf pointer passed"); 
      IB_EXIT(__func__, VSTATUS_ILLPARM); 
      return VSTATUS_ILLPARM;
   }
   
   // clear out the active mask on the Mai_t struct 
   memset(mad, 0, sizeof(Mai_t)); 
   
   mad->type   = MAI_TYPE_EXTERNAL; // Assume type MAD until told otherwise 
   mad->active = MAI_ACT_TYPE; 
   
   (void)BSWAP_MAD_HEADER((MAD *)buf); 
   (void)stl_mad_to_mai((MAD *)buf, mad);

   // convert the data only if we can identify the header 
   if (mad->base.bversion != MAD_BVERSION && mad->base.bversion != STL_BASE_VERSION) {
      IB_LOG_ERROR("Unknown MAD version:", mad->base.bversion); 
      return VSTATUS_BAD;
   }
   
   // Check for 'Reserved' values in management class 
   if (mad->base.mclass == 0    || mad->base.mclass == 2
       || (mad->base.mclass >= 0x50 && mad->base.mclass <= 0x80)
       ||  mad->base.mclass >= 0x82) {
      IB_LOG_ERROR("Reserved management class:", 
                   mad->base.mclass); 
      return VSTATUS_BAD;
   }
   
   if (mad->base.mclass == MAD_CV_SUBN_DR
       && mad->base.hopPointer > IBA_MAX_PATHSIZE) {
      IB_LOG_ERROR("Unexpected hopPointer value:", 
                   mad->base.hopPointer); 
      return VSTATUS_BAD;
   }
   
   // We can safely say the MAD header is valid now.  
   mad->active |= MAI_ACT_BASE; 
   if (IB_LOG_IS_INTERESTED(VS_LOG_INFO)) {
      IB_LOG_INFO("Base BaseVersion  ", mad->base.bversion); 
      IB_LOG_INFO("    MgmtClass    ", mad->base.mclass); 
      IB_LOG_INFO("    ClassVersion ", mad->base.cversion); 
      IB_LOG_INFO("    Method       ", mad->base.method); 
      IB_LOG_INFO("    Status       ", mad->base.status); 
      IB_LOG_INFO("    HopPointer   ", mad->base.hopPointer); 
      IB_LOG_INFO("    HopCount     ", mad->base.hopCount); 
      IB_LOG_INFOLX("    TID          ", mad->base.tid); 
      IB_LOG_INFO("    AttributeID  ", mad->base.aid); 
      IB_LOG_INFO("    AttributeMod ", mad->base.amod); 
      IB_LOG_INFO_FMT(__func__, "FullTID: 0x%016"CS64"x", mad->base.tid);
   }
   
   // Copy the data, if no data leave it zeroed from memset above
   if (len > sizeof(MAD_COMMON))
      memcpy(mad->data, buf + sizeof(MAD_COMMON), len - sizeof(MAD_COMMON));
   mad->datasize = (mad->base.bversion == MAD_BVERSION) ? IB_MAD_PAYLOAD_SIZE : len; 
   
   (void)vs_time_get(&mad->intime); 
   
   mad->active |= MAI_ACT_DATA | MAI_ACT_TSTAMP | MAI_ACT_FMASK; 
   
   IB_EXIT(__func__, VSTATUS_OK); 
   return VSTATUS_OK; 
}

