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freebsd-nq/sys/dev/iscsi/initiator/isc_sm.c

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Introduce Danny Braniss' iSCSI initiator, version 2.0.99. Please read the included man pages on how to use it. This code is still somewhat experimental but has been successfully tested on a number of targets. Many thanks to Danny for contributing this. Approved by: re
2007-07-24 15:35:02 +00:00
/*-
* Copyright (c) 2005-2007 Daniel Braniss <danny@cs.huji.ac.il>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/*
| iSCSI - Session Manager
| $Id: isc_sm.c,v 1.30 2007/04/22 09:53:09 danny Exp danny $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_iscsi_initiator.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/ctype.h>
#include <sys/errno.h>
#include <sys/sysctl.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/socketvar.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/proc.h>
#include <sys/ioccom.h>
#include <sys/queue.h>
#include <sys/kthread.h>
#include <sys/syslog.h>
#include <sys/mbuf.h>
#include <sys/bus.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_periph.h>
#include <dev/iscsi/initiator/iscsi.h>
#include <dev/iscsi/initiator/iscsivar.h>
static void
_async(isc_session_t *sp, pduq_t *pq)
{
debug_called(8);
iscsi_async(sp, pq);
pdu_free(sp->isc, pq);
}
static void
_reject(isc_session_t *sp, pduq_t *pq)
{
pduq_t *opq;
pdu_t *pdu;
reject_t *reject;
int itt;
debug_called(8);
pdu = mtod(pq->mp, pdu_t *);
itt = pdu->ipdu.bhs.itt;
reject = &pq->pdu.ipdu.reject;
sdebug(2, "itt=%x reason=0x%x", ntohl(itt), reject->reason);
opq = i_search_hld(sp, itt, 0);
if(opq != NULL)
iscsi_reject(sp, opq, pq);
else {
switch(pq->pdu.ipdu.bhs.opcode) {
case ISCSI_LOGOUT_CMD: // XXX: wasabi does this - can't figure out why
sdebug(2, "ISCSI_LOGOUT_CMD ...");
break;
default:
xdebug("%d] we lost something itt=%x",
sp->sid, ntohl(pq->pdu.ipdu.bhs.itt));
}
}
pdu_free(sp->isc, pq);
}
static void
_r2t(isc_session_t *sp, pduq_t *pq)
{
pduq_t *opq;
debug_called(8);
opq = i_search_hld(sp, pq->pdu.ipdu.bhs.itt, 1);
if(opq != NULL) {
iscsi_r2t(sp, opq, pq);
}
else {
r2t_t *r2t = &pq->pdu.ipdu.r2t;
xdebug("%d] we lost something itt=%x r2tSN=%d bo=%x ddtl=%x",
sp->sid, ntohl(pq->pdu.ipdu.bhs.itt),
ntohl(r2t->r2tSN), ntohl(r2t->bo), ntohl(r2t->ddtl));
}
pdu_free(sp->isc, pq);
}
static void
_scsi_rsp(isc_session_t *sp, pduq_t *pq)
{
pduq_t *opq;
debug_called(8);
opq = i_search_hld(sp, pq->pdu.ipdu.bhs.itt, 0);
debug(5, "itt=%x pq=%p opq=%p", ntohl(pq->pdu.ipdu.bhs.itt), pq, opq);
if(opq != NULL)
iscsi_done(sp, opq, pq);
else
xdebug("%d] we lost something itt=%x",
sp->sid, ntohl(pq->pdu.ipdu.bhs.itt));
pdu_free(sp->isc, pq);
}
static void
_read_data(isc_session_t *sp, pduq_t *pq)
{
pduq_t *opq;
debug_called(8);
opq = i_search_hld(sp, pq->pdu.ipdu.bhs.itt, 1);
if(opq != NULL) {
if(scsi_decap(sp, opq, pq) != 1) {
i_remove_hld(sp, opq); // done
pdu_free(sp->isc, opq);
}
}
else
xdebug("%d] we lost something itt=%x",
sp->sid, ntohl(pq->pdu.ipdu.bhs.itt));
pdu_free(sp->isc, pq);
}
/*
| this is a kludge,
| the jury is not back with a veredict, user or kernel
*/
static void
_nop_out(isc_session_t *sp)
{
pduq_t *pq;
nop_out_t *nop_out;
debug_called(8);
sdebug(4, "cws=%d", sp->cws);
if(sp->cws == 0) {
/*
| only send a nop if window is closed.
*/
if((pq = pdu_alloc(sp->isc, 0)) == NULL)
// I guess we ran out of resources
return;
nop_out = &pq->pdu.ipdu.nop_out;
nop_out->opcode = ISCSI_NOP_OUT;
nop_out->itt = htonl(sp->sn.itt);
nop_out->ttt = -1;
nop_out->I = 1;
nop_out->F = 1;
if(isc_qout(sp, pq) != 0) {
sdebug(1, "failed");
pdu_free(sp->isc, pq);
}
}
}
static void
_nop_in(isc_session_t *sp, pduq_t *pq)
{
pdu_t *pp = &pq->pdu;
nop_in_t *nop_in = &pp->ipdu.nop_in;
bhs_t *bhs = &pp->ipdu.bhs;
debug_called(8);
sdebug(5, "itt=%x ttt=%x", htonl(nop_in->itt), htonl(nop_in->ttt));
if(nop_in->itt == -1) {
if(pp->ds_len != 0) {
/*
| according to RFC 3720 this should be zero
| what to do if not?
*/
xdebug("%d] dslen not zero", sp->sid);
}
if(nop_in->ttt != -1) {
nop_out_t *nop_out;
/*
| target wants a nop_out
*/
bhs->opcode = ISCSI_NOP_OUT;
bhs->I = 1;
bhs->F = 1;
/*
| we are reusing the pdu, so bhs->ttt == nop_in->ttt;
| and need to zero out 'Reserved'
| small cludge here.
*/
nop_out = &pp->ipdu.nop_out;
nop_out->sn.maxcmd = 0;
memset(nop_out->mbz, 0, sizeof(nop_out->mbz));
(void)isc_qout(sp, pq); //XXX: should check return?
return;
}
//else {
// just making noise?
// see 10.9.1: target does not want and answer.
//}
} else
if(nop_in->ttt == -1) {
/*
| it is an answer to a nop_in from us
*/
if(nop_in->itt != -1) {
#ifdef ISC_WAIT4PING
// XXX: MUTEX please
if(sp->flags & ISC_WAIT4PING) {
i_nqueue_rsp(sp, pq);
wakeup(&sp->rsp);
return;
}
#endif
}
}
/*
| drop it
*/
pdu_free(sp->isc, pq);
return;
}
int
i_prepPDU(isc_session_t *sp, pduq_t *pq)
{
size_t len, n;
pdu_t *pp = &pq->pdu;
bhs_t *bhp = &pp->ipdu.bhs;
len = sizeof(bhs_t);
if(pp->ahs_len) {
len += pp->ahs_len;
bhp->AHSLength = pp->ahs_len / 4;
}
if(sp->hdrDigest)
len += 4;
if(pp->ds_len) {
n = pp->ds_len;
len += n;
#if BYTE_ORDER == LITTLE_ENDIAN
bhp->DSLength = ((n & 0x00ff0000) >> 16)
| (n & 0x0000ff00)
| ((n & 0x000000ff) << 16);
#else
bhp->DSLength = n;
#endif
if(len & 03) {
n = 4 - (len & 03);
len += n;
}
if(sp->dataDigest)
len += 4;
}
pq->len = len;
len -= sizeof(bhs_t);
if(sp->opt.maxBurstLength && (len > sp->opt.maxBurstLength)) {
xdebug("%d] pdu len=%zd > %d",
sp->sid, len, sp->opt.maxBurstLength);
// XXX: when this happens it used to hang ...
return E2BIG;
}
return 0;
}
int
isc_qout(isc_session_t *sp, pduq_t *pq)
{
int error = 0;
debug_called(8);
if(pq->len == 0 && (error = i_prepPDU(sp, pq)))
return error;
if(pq->pdu.ipdu.bhs.I)
i_nqueue_isnd(sp, pq);
else
if(pq->pdu.ipdu.data_out.opcode == ISCSI_WRITE_DATA)
i_nqueue_wsnd(sp, pq);
else
i_nqueue_csnd(sp, pq);
sdebug(5, "enqued: pq=%p", pq);
#ifdef ISC_OWAITING
if(sp->flags & ISC_OWAITING) {
mtx_lock(&sp->io_mtx); // XXX
wakeup(&sp->flags);
mtx_unlock(&sp->io_mtx); // XXX
}
#else
wakeup(&sp->flags);
#endif
return error;
}
/*
| called when a fullPhase is restarted
*/
static int
ism_restart(isc_session_t *sp)
{
int lastcmd;
sdebug(2, "restart ...");
sp->flags |= ISC_SM_HOLD;
lastcmd = iscsi_requeue(sp);
#if 0
if(lastcmd != sp->sn.cmd) {
sdebug(1, "resetting CmdSN to=%d (from %d)", lastcmd, sp->sn.cmd);
sp->sn.cmd = lastcmd;
}
#endif
sp->flags &= ~ISC_SM_HOLD;
return 0;
}
int
ism_fullfeature(struct cdev *dev, int flag)
{
isc_session_t *sp = (isc_session_t *)dev->si_drv2;
int error;
sdebug(2, "flag=%d", flag);
error = 0;
switch(flag) {
case 0: // stop
sp->flags &= ~ISC_FFPHASE;
break;
case 1: // start
error = ic_fullfeature(dev);
break;
case 2: // restart
error = ism_restart(sp);
break;
}
return error;
}
void
ism_recv(isc_session_t *sp, pduq_t *pq)
{
bhs_t *bhs;
int statSN;
debug_called(8);
bhs = &pq->pdu.ipdu.bhs;
statSN = ntohl(bhs->OpcodeSpecificFields[1]);
#if 0
{
/*
| this code is only for debugging.
*/
sn_t *sn = &sp->sn;
if(sp->cws == 0) {
if((sp->flags & ISC_STALLED) == 0) {
sdebug(4, "window closed: max=0x%x exp=0x%x opcode=0x%x cmd=0x%x cws=%d.",
sn->maxCmd, sn->expCmd, bhs->opcode, sn->cmd, sp->cws);
sp->flags |= ISC_STALLED;
} else
if(sp->flags & ISC_STALLED) {
sdebug(4, "window opened: max=0x%x exp=0x%x opcode=0x%x cmd=0x%x cws=%d.",
sn->maxCmd, sn->expCmd, bhs->opcode, sn->cmd, sp->cws);
sp->flags &= ~ISC_STALLED;;
}
}
}
#endif
#ifdef notyet
if(sp->sn.expCmd != sn->cmd) {
sdebug(1, "we lost something ... exp=0x%x cmd=0x%x",
sn->expCmd, sn->cmd);
}
#endif
sdebug(5, "opcode=0x%x itt=0x%x stat#0x%x maxcmd=0x%0x",
bhs->opcode, ntohl(bhs->itt), statSN, sp->sn.maxCmd);
switch(bhs->opcode) {
case ISCSI_READ_DATA: {
data_in_t *cmd = &pq->pdu.ipdu.data_in;
if(cmd->S == 0)
break;
}
default:
if(statSN > (sp->sn.stat + 1)) {
sdebug(1, "we lost some rec=0x%x exp=0x%x",
statSN, sp->sn.stat);
// XXX: must do some error recovery here.
}
sp->sn.stat = statSN;
}
switch(bhs->opcode) {
case ISCSI_LOGIN_RSP:
case ISCSI_TEXT_RSP:
case ISCSI_LOGOUT_RSP:
i_nqueue_rsp(sp, pq);
wakeup(&sp->rsp);
sdebug(3, "wakeup rsp");
break;
case ISCSI_NOP_IN: _nop_in(sp, pq); break;
case ISCSI_SCSI_RSP: _scsi_rsp(sp, pq); break;
case ISCSI_READ_DATA: _read_data(sp, pq); break;
case ISCSI_R2T: _r2t(sp, pq); break;
case ISCSI_REJECT: _reject(sp, pq); break;
case ISCSI_ASYNC: _async(sp, pq); break;
case ISCSI_TASK_RSP:
default:
sdebug(1, "opcode=0x%x itt=0x%x not implemented yet",
bhs->opcode, ntohl(bhs->itt));
break;
}
}
static int
proc_out(isc_session_t *sp)
{
sn_t *sn = &sp->sn;
pduq_t *pq;
int error, ndone = 0;
int which;
debug_called(8);
while(1) {
pdu_t *pp;
bhs_t *bhs;
/*
| check if there is outstanding work in:
| 1- the Inmediate queue
| 2- the R2T queue
| 3- the cmd queue, only if the command window allows it.
*/
which = BIT(0) | BIT(1);
if(SNA_GT(sn->cmd, sn->maxCmd) == 0)
which |= BIT(2);
if((pq = i_dqueue_snd(sp, which)) == NULL)
break;
pp = &pq->pdu;
bhs = &pp->ipdu.bhs;
switch(bhs->opcode) {
case ISCSI_SCSI_CMD:
sn->itt++;
bhs->itt = htonl(sn->itt);
case ISCSI_LOGIN_CMD:
case ISCSI_TEXT_CMD:
case ISCSI_LOGOUT_CMD:
case ISCSI_SNACK:
case ISCSI_NOP_OUT:
case ISCSI_TASK_CMD:
bhs->CmdSN = htonl(sn->cmd);
if(bhs->I == 0)
sn->cmd++;
case ISCSI_WRITE_DATA:
bhs->ExpStSN = htonl(sn->stat);
break;
default:
// XXX: can this happen?
xdebug("bad opcode=0x%x sn(cmd=0x%x expCmd=0x%x maxCmd=0x%x expStat=0x%x itt=0x%x)",
bhs->opcode,
sn->cmd, sn->expCmd, sn->maxCmd, sn->expStat, sn->itt);
// XXX: and now?
}
sdebug(5, "opcode=0x%x sn(cmd=0x%x expCmd=0x%x maxCmd=0x%x expStat=0x%x itt=0x%x)",
bhs->opcode,
sn->cmd, sn->expCmd, sn->maxCmd, sn->expStat, sn->itt);
if(pq->ccb)
i_nqueue_hld(sp, pq);
if((error = isc_sendPDU(sp, pq)) == 0)
ndone++;
else {
xdebug("error=%d ndone=%d opcode=0x%x ccb=%p itt=%x",
error, ndone, bhs->opcode, pq->ccb, ntohl(bhs->itt));
if(error == EPIPE) {
// XXX: better do some error recovery ...
break;
}
#if 0
if(pq->ccb) {
i_remove_hld(sp, pq);
pq->ccb->ccb_h.status |= CAM_UNREC_HBA_ERROR; // some better error?
XPT_DONE(pq->ccb);
}
else {
// XXX: now what?
// how do we pass back an error?
}
#endif
}
if(pq->ccb == NULL || error)
pdu_free(sp->isc, pq);
}
return ndone;
}
/*
| survives link breakdowns.
*/
static void
ism_proc(void *vp)
{
isc_session_t *sp = (isc_session_t *)vp;
int odone;
debug_called(8);
sdebug(3, "started");
sp->flags |= ISC_SM_RUNNING;
do {
if(sp->flags & ISC_SM_HOLD)
odone = 0;
else
odone = proc_out(sp);
sdebug(7, "odone=%d", odone);
if(odone == 0) {
mtx_lock(&sp->io_mtx);
#ifdef ISC_OWAITING
sp->flags |= ISC_OWAITING;
#endif
if((msleep(&sp->flags, &sp->io_mtx, PRIBIO, "isc_proc", hz*30) == EWOULDBLOCK)
&& (sp->flags & ISC_CON_RUNNING))
_nop_out(sp);
#ifdef ISC_OWAITING
sp->flags &= ~ISC_OWAITING;
#endif
mtx_unlock(&sp->io_mtx);
}
} while(sp->flags & ISC_SM_RUN);
sp->flags &= ~ISC_SM_RUNNING;
#if __FreeBSD_version >= 700000
destroy_dev(sp->dev);
#endif
sdebug(3, "terminated");
wakeup(sp);
Rename the kthread_xxx (e.g. kthread_create()) calls to kproc_xxx as they actually make whole processes. Thos makes way for us to add REAL kthread_create() and friends that actually make theads. it turns out that most of these calls actually end up being moved back to the thread version when it's added. but we need to make this cosmetic change first. I'd LOVE to do this rename in 7.0 so that we can eventually MFC the new kthread_xxx() calls.
2007-10-20 23:23:23 +00:00
kproc_exit(0);
Introduce Danny Braniss' iSCSI initiator, version 2.0.99. Please read the included man pages on how to use it. This code is still somewhat experimental but has been successfully tested on a number of targets. Many thanks to Danny for contributing this. Approved by: re
2007-07-24 15:35:02 +00:00
}
#if 0
static int
isc_dump_options(SYSCTL_HANDLER_ARGS)
{
int error;
isc_session_t *sp;
char buf[1024], *bp;
sp = (isc_session_t *)arg1;
bp = buf;
sprintf(bp, "targetname='%s'", sp->opt.targetName);
bp += strlen(bp);
sprintf(bp, " targetname='%s'", sp->opt.targetAddress);
error = SYSCTL_OUT(req, buf, strlen(buf));
return error;
}
#endif
static int
isc_dump_stats(SYSCTL_HANDLER_ARGS)
{
isc_session_t *sp;
struct isc_softc *sc;
char buf[1024], *bp;
int error, n;
sp = (isc_session_t *)arg1;
sc = sp->isc;
bp = buf;
n = sizeof(buf);
snprintf(bp, n, "recv=%d sent=%d", sp->stats.nrecv, sp->stats.nsent);
bp += strlen(bp);
n -= strlen(bp);
snprintf(bp, n, " flags=0x%08x pdus-alloc=%d pdus-max=%d",
sp->flags, sc->npdu_alloc, sc->npdu_max);
bp += strlen(bp);
n -= strlen(bp);
snprintf(bp, n, " cws=%d cmd=%x exp=%x max=%x stat=%x itt=%x",
sp->cws, sp->sn.cmd, sp->sn.expCmd, sp->sn.maxCmd, sp->sn.stat, sp->sn.itt);
error = SYSCTL_OUT(req, buf, strlen(buf));
return error;
}
static int
isc_sysctl_targetName(SYSCTL_HANDLER_ARGS)
{
char buf[128], **cp;
int error;
cp = (char **)arg1;
snprintf(buf, sizeof(buf), "%s", *cp);
error = SYSCTL_OUT(req, buf, strlen(buf));
return error;
}
static int
isc_sysctl_targetAddress(SYSCTL_HANDLER_ARGS)
{
char buf[128], **cp;
int error;
cp = (char **)arg1;
snprintf(buf, sizeof(buf), "%s", *cp);
error = SYSCTL_OUT(req, buf, strlen(buf));
return error;
}
static void
isc_add_sysctls(isc_session_t *sp)
{
debug_called(8);
sdebug(6, "sid=%d %s", sp->sid, sp->dev->si_name);
sysctl_ctx_init(&sp->clist);
sp->oid = SYSCTL_ADD_NODE(&sp->clist,
SYSCTL_CHILDREN(sp->isc->oid),
OID_AUTO,
sp->dev->si_name+5, // iscsi0
CTLFLAG_RD,
0,
"initiator");
SYSCTL_ADD_PROC(&sp->clist,
SYSCTL_CHILDREN(sp->oid),
OID_AUTO,
"targetname",
CTLFLAG_RD,
(void *)&sp->opt.targetName, 0,
isc_sysctl_targetName, "A", "target name");
SYSCTL_ADD_PROC(&sp->clist,
SYSCTL_CHILDREN(sp->oid),
OID_AUTO,
"targeaddress",
CTLFLAG_RD,
(void *)&sp->opt.targetAddress, 0,
isc_sysctl_targetAddress, "A", "target address");
SYSCTL_ADD_PROC(&sp->clist,
SYSCTL_CHILDREN(sp->oid),
OID_AUTO,
"stats",
CTLFLAG_RD,
(void *)sp, 0,
isc_dump_stats, "A", "statistics");
}
void
ism_stop(isc_session_t *sp)
{
struct isc_softc *sc = sp->isc;
int n;
debug_called(8);
sdebug(2, "terminating");
/*
| first stop the receiver
*/
isc_stop_receiver(sp);
/*
| now stop the xmitter
*/
n = 5;
sp->flags &= ~ISC_SM_RUN;
while(n-- && (sp->flags & ISC_SM_RUNNING)) {
sdebug(2, "n=%d", n);
wakeup(&sp->flags);
tsleep(sp, PRIBIO, "-", 5*hz);
}
sdebug(2, "final n=%d", n);
sp->flags &= ~ISC_FFPHASE;
iscsi_cleanup(sp);
(void)i_pdu_flush(sp);
ic_lost_target(sp, sp->sid);
mtx_lock(&sc->mtx);
TAILQ_REMOVE(&sc->isc_sess, sp, sp_link);
sc->nsess--;
mtx_unlock(&sc->mtx);
#if __FreeBSD_version < 700000
destroy_dev(sp->dev);
#endif
mtx_destroy(&sp->rsp_mtx);
mtx_destroy(&sp->rsv_mtx);
mtx_destroy(&sp->hld_mtx);
mtx_destroy(&sp->snd_mtx);
mtx_destroy(&sp->io_mtx);
i_freeopt(&sp->opt);
sc->sessions[sp->sid] = NULL;
if(sysctl_ctx_free(&sp->clist))
xdebug("sysctl_ctx_free failed");
free(sp, M_ISCSI);
}
int
ism_start(isc_session_t *sp)
{
debug_called(8);
/*
| now is a good time to do some initialization
*/
TAILQ_INIT(&sp->rsp);
TAILQ_INIT(&sp->rsv);
TAILQ_INIT(&sp->csnd);
TAILQ_INIT(&sp->isnd);
TAILQ_INIT(&sp->wsnd);
TAILQ_INIT(&sp->hld);
#if 1
mtx_init(&sp->rsv_mtx, "iscsi-rsv", NULL, MTX_DEF);
mtx_init(&sp->rsp_mtx, "iscsi-rsp", NULL, MTX_DEF);
mtx_init(&sp->snd_mtx, "iscsi-snd", NULL, MTX_DEF);
mtx_init(&sp->hld_mtx, "iscsi-hld", NULL, MTX_DEF);
#else
mtx_init(&sp->rsv_mtx, "iscsi-rsv", NULL, MTX_SPIN);
mtx_init(&sp->rsp_mtx, "iscsi-rsp", NULL, MTX_SPIN);
mtx_init(&sp->snd_mtx, "iscsi-snd", NULL, MTX_SPIN);
mtx_init(&sp->hld_mtx, "iscsi-hld", NULL, MTX_SPIN);
#endif
mtx_init(&sp->io_mtx, "iscsi-io", NULL, MTX_DEF);
isc_add_sysctls(sp);
sp->flags |= ISC_SM_RUN;
Rename the kthread_xxx (e.g. kthread_create()) calls to kproc_xxx as they actually make whole processes. Thos makes way for us to add REAL kthread_create() and friends that actually make theads. it turns out that most of these calls actually end up being moved back to the thread version when it's added. but we need to make this cosmetic change first. I'd LOVE to do this rename in 7.0 so that we can eventually MFC the new kthread_xxx() calls.
2007-10-20 23:23:23 +00:00
return kproc_create(ism_proc, sp, &sp->stp, 0, 0, "ism_%d", sp->sid);
Introduce Danny Braniss' iSCSI initiator, version 2.0.99. Please read the included man pages on how to use it. This code is still somewhat experimental but has been successfully tested on a number of targets. Many thanks to Danny for contributing this. Approved by: re
2007-07-24 15:35:02 +00:00
}
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