/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/stat.h>
#include <sys/pci.h>
#include <sys/sunddi.h>
#include <sys/modctl.h>
#include <sys/file.h>
#include <sys/cred.h>
#include <sys/byteorder.h>
#include <sys/atomic.h>
#include <sys/scsi/scsi.h>
#include <sys/mac_client.h>
#include <sys/modhash.h>
/*
* leadville header files
*/
#include <sys/fibre-channel/fc.h>
#include <sys/fibre-channel/impl/fc_fcaif.h>
/*
* fcoe header files
*/
#include <sys/fcoe/fcoe_common.h>
/*
* fcoei header files
*/
#include <fcoei.h>
/*
* forward declaration of stack functions
*/
static uint32_t fcoei_xch_check(
mod_hash_key_t key, mod_hash_val_t *val, void *arg);
static int fcoei_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
static int fcoei_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
static int fcoei_open(dev_t *devp, int flag, int otype, cred_t *credp);
static int fcoei_close(dev_t dev, int flag, int otype, cred_t *credp);
static int fcoei_ioctl(
dev_t dev, int cmd, intptr_t data, int mode, cred_t *credp, int *rval);
static int fcoei_attach_init(fcoei_soft_state_t *ss);
static int fcoei_detach_uninit(fcoei_soft_state_t *ss);
static void fcoei_watchdog(void *arg);
static void fcoei_process_events(fcoei_soft_state_t *ss);
static void fcoei_trigger_fp_attach(void *arg);
static void fcoei_abts_exchange(fcoei_exchange_t *xch);
static void fcoei_clear_watchdog_jobs(fcoei_soft_state_t *ss);
/*
* Driver identificaton stuff
*/
static struct cb_ops fcoei_cb_ops = {
fcoei_open,
fcoei_close,
nodev,
nodev,
nodev,
nodev,
nodev,
fcoei_ioctl,
nodev,
nodev,
nodev,
nochpoll,
ddi_prop_op,
0,
D_MP | D_NEW | D_HOTPLUG,
CB_REV,
nodev,
nodev
};
static struct dev_ops fcoei_ops = {
DEVO_REV,
0,
nodev,
nulldev,
nulldev,
fcoei_attach,
fcoei_detach,
nodev,
&fcoei_cb_ops,
NULL,
ddi_power,
ddi_quiesce_not_needed
};
static struct modldrv modldrv = {
&mod_driverops,
FCOEI_NAME_VERSION,
&fcoei_ops,
};
static struct modlinkage modlinkage = {
MODREV_1,
&modldrv,
NULL
};
/*
* Driver's global variables
*/
void *fcoei_state = NULL;
int fcoei_use_ext_log = 0;
/*
* Common loadable module entry points _init, _fini, _info
*/
int
_init(void)
{
int ret;
ret = ddi_soft_state_init(&fcoei_state, sizeof (fcoei_soft_state_t), 0);
if (ret != DDI_SUCCESS) {
FCOEI_LOG(__FUNCTION__, "soft state init failed: %x", ret);
return (ret);
}
ret = mod_install(&modlinkage);
if (ret != 0) {
ddi_soft_state_fini(&fcoei_state);
FCOEI_LOG(__FUNCTION__, "fcoei mod_install failed: %x", ret);
return (ret);
}
/*
* Let FCTL initialize devo_bus_ops
*/
fc_fca_init(&fcoei_ops);
FCOEI_LOG(__FUNCTION__, "fcoei _init succeeded");
return (ret);
}
int
_fini(void)
{
int ret;
ret = mod_remove(&modlinkage);
if (ret != 0) {
FCOEI_EXT_LOG(__FUNCTION__, "fcoei mod_remove failed: %x", ret);
return (ret);
}
ddi_soft_state_fini(&fcoei_state);
FCOEI_LOG(__FUNCTION__, "fcoei _fini succeeded");
return (ret);
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
/*
* Autoconfiguration entry points: attach, detach, getinfo
*/
static int
fcoei_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
{
int ret;
int fcoe_ret;
int instance;
fcoei_soft_state_t *ss;
instance = ddi_get_instance(dip);
FCOEI_LOG(__FUNCTION__, "instance is %d", instance);
switch (cmd) {
case DDI_ATTACH:
ret = ddi_soft_state_zalloc(fcoei_state, instance);
if (ret != DDI_SUCCESS) {
FCOEI_LOG(__FUNCTION__, "ss zalloc failed: %x", ret);
return (ret);
}
/*
* Get the soft state, and do basic initialization with dip
*/
ss = ddi_get_soft_state(fcoei_state, instance);
ss->ss_dip = dip;
fcoe_ret = fcoei_attach_init(ss);
if (fcoe_ret != FCOE_SUCCESS) {
ddi_soft_state_free(fcoei_state, instance);
FCOEI_LOG(__FUNCTION__, "fcoei_attach_init failed: "
"%x", fcoe_ret);
return (DDI_FAILURE);
}
ss->ss_flags |= SS_FLAG_TRIGGER_FP_ATTACH;
(void) timeout(fcoei_trigger_fp_attach, ss, FCOE_SEC2TICK(1));
FCOEI_LOG(__FUNCTION__, "fcoei_attach succeeded: dip-%p, "
"cmd-%x", dip, cmd);
return (DDI_SUCCESS);
case DDI_RESUME:
return (DDI_SUCCESS);
default:
FCOEI_LOG(__FUNCTION__, "unsupported attach cmd-%X", cmd);
return (DDI_FAILURE);
}
}
static int
fcoei_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
{
int fcoe_ret;
int instance;
fcoei_soft_state_t *ss;
instance = ddi_get_instance(dip);
ss = ddi_get_soft_state(fcoei_state, instance);
if (ss == NULL) {
FCOEI_LOG(__FUNCTION__, "get ss failed: dip-%p", dip);
return (DDI_FAILURE);
}
switch (cmd) {
case DDI_DETACH:
if (ss->ss_flags & SS_FLAG_TRIGGER_FP_ATTACH) {
FCOEI_LOG(__FUNCTION__, "still await fp attach");
return (DDI_FAILURE);
}
if (ss->ss_flags & SS_FLAG_LV_BOUND) {
FCOEI_LOG(__FUNCTION__, "fp is not detached yet");
return (DDI_FAILURE);
}
fcoe_ret = fcoei_detach_uninit(ss);
if (fcoe_ret != FCOE_SUCCESS) {
FCOEI_LOG(__FUNCTION__, "fcoei_detach_uninit failed:"
" dip-%p, fcoe_ret-%d", dip, fcoe_ret);
return (DDI_FAILURE);
}
FCOEI_LOG(__FUNCTION__, "succeeded: dip-%p, cmd-%x", dip, cmd);
return (DDI_SUCCESS);
case DDI_SUSPEND:
return (DDI_SUCCESS);
default:
FCOEI_LOG(__FUNCTION__, "unspported detach cmd-%X", cmd);
return (DDI_FAILURE);
}
}
/*
* Device access entry points: open, close, ioctl
*/
static int
fcoei_open(dev_t *devp, int flag, int otype, cred_t *credp)
{
fcoei_soft_state_t *ss;
if (otype != OTYP_CHR) {
FCOEI_LOG(__FUNCTION__, "flag: %x", flag);
return (EINVAL);
}
if (drv_priv(credp)) {
return (EPERM);
}
/*
* First of all, get related soft state
*/
ss = ddi_get_soft_state(fcoei_state, (int)getminor(*devp));
if (ss == NULL) {
return (ENXIO);
}
mutex_enter(&ss->ss_ioctl_mutex);
if (ss->ss_ioctl_flags & FCOEI_IOCTL_FLAG_OPEN) {
/*
* We don't support concurrent open
*/
mutex_exit(&ss->ss_ioctl_mutex);
return (EBUSY);
}
ss->ss_ioctl_flags |= FCOEI_IOCTL_FLAG_OPEN;
mutex_exit(&ss->ss_ioctl_mutex);
return (0);
}
static int
fcoei_close(dev_t dev, int flag, int otype, cred_t *credp)
{
fcoei_soft_state_t *ss;
if (otype != OTYP_CHR) {
FCOEI_LOG(__FUNCTION__, "flag: %x, %p", flag, credp);
return (EINVAL);
}
/*
* First of all, get related soft state
*/
ss = ddi_get_soft_state(fcoei_state, (int)getminor(dev));
if (ss == NULL) {
return (ENXIO);
}
mutex_enter(&ss->ss_ioctl_mutex);
if (!(ss->ss_ioctl_flags & FCOEI_IOCTL_FLAG_OPEN)) {
/*
* If it's not open, we can exit
*/
mutex_exit(&ss->ss_ioctl_mutex);
return (ENODEV);
}
ss->ss_ioctl_flags &= ~FCOEI_IOCTL_FLAG_OPEN;
mutex_exit(&ss->ss_ioctl_mutex);
return (0);
}
static int
fcoei_ioctl(dev_t dev, int cmd, intptr_t data, int mode,
cred_t *credp, int *rval)
{
fcoei_soft_state_t *ss;
int ret = 0;
if (drv_priv(credp) != 0) {
FCOEI_LOG(__FUNCTION__, "data: %p, %x", data, mode);
return (EPERM);
}
/*
* Get related soft state
*/
ss = ddi_get_soft_state(fcoei_state, (int32_t)getminor(dev));
if (!ss) {
return (ENXIO);
}
/*
* Process ioctl
*/
switch (cmd) {
default:
FCOEI_LOG(__FUNCTION__, "ioctl-0x%02X", cmd);
ret = ENOTTY;
}
/*
* Set return value
*/
*rval = ret;
return (ret);
}
/*
* fcoei_attach_init
* init related stuff of the soft state
*
* Input:
* ss = the soft state that will be processed
*
* Return:
* if it succeeded or not
*
* Comment:
* N/A
*/
static int
fcoei_attach_init(fcoei_soft_state_t *ss)
{
fcoe_port_t *eport;
fcoe_client_t client_fcoei;
char taskq_name[32];
int ret;
la_els_logi_t *els = &ss->ss_els_logi;
svc_param_t *class3_param;
/*
* Register fcoei to FCOE as its client
*/
client_fcoei.ect_eport_flags = EPORT_FLAG_INI_MODE |
EPORT_FLAG_IS_DIRECT_P2P;
client_fcoei.ect_max_fc_frame_size = FCOE_MAX_FC_FRAME_SIZE;
client_fcoei.ect_private_frame_struct_size = sizeof (fcoei_frame_t);
fcoei_init_ect_vectors(&client_fcoei);
client_fcoei.ect_client_port_struct = ss;
client_fcoei.ect_fcoe_ver = FCOE_VER_NOW;
FCOEI_LOG(__FUNCTION__, "version: %x %x", FCOE_VER_NOW, fcoe_ver_now);
ret = ddi_prop_get_int(DDI_DEV_T_ANY, ss->ss_dip,
DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "mac_id", -1);
if (ret == -1) {
FCOEI_LOG(__FUNCTION__, "get mac_id failed");
return (DDI_FAILURE);
} else {
client_fcoei.ect_channelid = ret;
}
/*
* It's fcoe's responsiblity to initialize eport's all elements,
* so we needn't do eport initialization
*/
eport = fcoe_register_client(&client_fcoei);
if (eport == NULL) {
goto fail_register_client;
} else {
ss->ss_eport = eport;
FCOE_SET_DEFAULT_FPORT_ADDR(eport->eport_efh_dst);
}
/*
* Now it's time to register fca_tran to FCTL
* Remember fc_local_port is transparent to FCA (fcoei)
*/
ss->ss_fca_tran.fca_version = FCTL_FCA_MODREV_5;
ss->ss_fca_tran.fca_numports = 1;
ss->ss_fca_tran.fca_pkt_size = sizeof (fcoei_exchange_t);
ss->ss_fca_tran.fca_cmd_max = 2048;
/*
* scsi_tran_hba_setup could need these stuff
*/
ss->ss_fca_tran.fca_dma_lim = NULL;
ss->ss_fca_tran.fca_iblock = NULL;
ss->ss_fca_tran.fca_dma_attr = NULL;
ss->ss_fca_tran.fca_acc_attr = NULL;
/*
* Initialize vectors
*/
fcoei_init_fcatran_vectors(&ss->ss_fca_tran);
/*
* fc_fca_attach only sets driver's private, it has nothing to with
* common port object between fcoei and leadville.
* After this attach, fp_attach will be triggered, and it will call
* fca_bind_port to let fcoei to know about common port object.
*/
if (fc_fca_attach(ss->ss_dip, &ss->ss_fca_tran) != DDI_SUCCESS) {
goto fail_fca_attach;
}
/*
* It's time to do ss initialization
*/
ret = ddi_create_minor_node(ss->ss_dip, "admin",
S_IFCHR, ddi_get_instance(ss->ss_dip), DDI_NT_NEXUS, 0);
if (ret != DDI_SUCCESS) {
goto fail_minor_node;
}
ss->ss_flags = 0;
ss->ss_port = NULL;
/*
* ss->ss_eport has been initialized
*/
ss->ss_sol_oxid_hash = mod_hash_create_idhash(
"fcoei_sol_oxid_hash", FCOEI_SOL_HASH_SIZE,
mod_hash_null_valdtor);
ss->ss_unsol_rxid_hash = mod_hash_create_idhash(
"fcoei_unsol_rxid_hash", FCOEI_UNSOL_HASH_SIZE,
mod_hash_null_valdtor);
list_create(&ss->ss_comp_xch_list, sizeof (fcoei_exchange_t),
offsetof(fcoei_exchange_t, xch_comp_node));
ss->ss_next_sol_oxid = 0xFFFF;
ss->ss_next_unsol_rxid = 0xFFFF;
mutex_init(&ss->ss_watchdog_mutex, 0, MUTEX_DRIVER, 0);
cv_init(&ss->ss_watchdog_cv, NULL, CV_DRIVER, NULL);
(void) snprintf(taskq_name, 32, "leadville_fcoei_%d_taskq",
ddi_get_instance(ss->ss_dip));
taskq_name[31] = 0;
ss->ss_taskq = ddi_taskq_create(ss->ss_dip,
taskq_name, 64, TASKQ_DEFAULTPRI, DDI_SLEEP);
ss->ss_link_state = FC_STATE_OFFLINE;
ss->ss_link_speed = 0;
ss->ss_port_event_counter = 0;
list_create(&ss->ss_event_list, sizeof (fcoei_event_t),
offsetof(fcoei_event_t, ae_node));
ss->ss_sol_cnt1 = 0;
ss->ss_sol_cnt2 = 0;
ss->ss_sol_cnt = &ss->ss_sol_cnt1;
ss->ss_unsol_cnt1 = 0;
ss->ss_unsol_cnt2 = 0;
ss->ss_unsol_cnt = &ss->ss_unsol_cnt1;
ss->ss_ioctl_flags = 0;
mutex_init(&ss->ss_ioctl_mutex, 0, MUTEX_DRIVER, 0);
bcopy(eport->eport_portwwn, els->nport_ww_name.raw_wwn, 8);
bcopy(eport->eport_nodewwn, els->node_ww_name.raw_wwn, 8);
els->common_service.fcph_version = 0x2008;
els->common_service.btob_credit = 3;
els->common_service.cmn_features = 0x8800;
els->common_service.conc_sequences = 0xff;
els->common_service.relative_offset = 3;
els->common_service.e_d_tov = 0x07d0;
class3_param = (svc_param_t *)&els->class_3;
class3_param->class_opt = 0x8800;
class3_param->rcv_size = els->common_service.rx_bufsize = 2048;
class3_param->conc_sequences = 0xff;
class3_param->open_seq_per_xchng = 1;
/*
* Fill out RNID Management Information
*/
bcopy(ss->ss_eport->eport_portwwn, ss->ss_rnid.global_id, 8);
ss->ss_rnid.unit_type = FCOEI_RNID_HBA;
ss->ss_rnid.ip_version = FCOEI_RNID_IPV4;
/*
* Start our watchdog
*/
(void) ddi_taskq_dispatch(ss->ss_taskq,
fcoei_watchdog, ss, DDI_SLEEP);
while (!(ss->ss_flags & SS_FLAG_WATCHDOG_RUNNING)) {
delay(50);
}
/*
* Report the device to the system
*/
ddi_report_dev(ss->ss_dip);
return (DDI_SUCCESS);
fail_minor_node:
FCOEI_LOG(__FUNCTION__, "fail_minor_node");
(void) fc_fca_detach(ss->ss_dip);
fail_fca_attach:
eport->eport_deregister_client(eport);
FCOEI_LOG(__FUNCTION__, "fail_fca_attach");
fail_register_client:
FCOEI_LOG(__FUNCTION__, "fail_register_client");
return (DDI_FAILURE);
}
/*
* fcoei_detach_uninit
* uninit related stuff of the soft state
*
* Input:
* ss = the soft state that will be processed
*
* Return:
* if it succeeded or not
*
* Comment:
* N/A
*/
int
fcoei_detach_uninit(fcoei_soft_state_t *ss)
{
/*
* Stop watchdog first
*/
if (ss->ss_flags & SS_FLAG_WATCHDOG_RUNNING) {
ss->ss_flags |= SS_FLAG_TERMINATE_WATCHDOG;
cv_broadcast(&ss->ss_watchdog_cv);
}
/*
* Destroy the taskq
*/
ddi_taskq_wait(ss->ss_taskq);
ddi_taskq_destroy(ss->ss_taskq);
/*
* Release all allocated resources
*/
mutex_destroy(&ss->ss_ioctl_mutex);
mutex_destroy(&ss->ss_watchdog_mutex);
cv_destroy(&ss->ss_watchdog_cv);
mod_hash_destroy_idhash(ss->ss_sol_oxid_hash);
mod_hash_destroy_idhash(ss->ss_unsol_rxid_hash);
list_destroy(&ss->ss_event_list);
ss->ss_eport->eport_deregister_client(ss->ss_eport);
ddi_remove_minor_node(ss->ss_dip, NULL);
/*
* Release itself
*/
ddi_soft_state_free(fcoei_state, ddi_get_instance(ss->ss_dip));
return (FCOE_SUCCESS);
}
/*
* fcoei_watchdog
* Perform periodic checking and routine tasks
*
* Input:
* arg = the soft state that will be processed
*
* Return:
* N/A
*
* Comment:
* N/A
*/
static void
fcoei_watchdog(void *arg)
{
fcoei_soft_state_t *ss;
clock_t tmp_delay;
clock_t start_clock;
clock_t last_clock;
/*
* For debugging
*/
ss = (fcoei_soft_state_t *)arg;
FCOEI_LOG(__FUNCTION__, "ss %p", ss);
FCOEI_LOG(__FUNCTION__, "sol_hash %p", ss->ss_sol_oxid_hash);
FCOEI_LOG(__FUNCTION__, "unsol_hash %p", ss->ss_unsol_rxid_hash);
ss->ss_flags |= SS_FLAG_WATCHDOG_RUNNING;
tmp_delay = FCOE_SEC2TICK(1) / 2;
last_clock = CURRENT_CLOCK;
/*
* If nobody reqeusts to terminate the watchdog, we will work forever
*/
while (!(ss->ss_flags & SS_FLAG_TERMINATE_WATCHDOG)) {
/*
* We handle all asynchronous events serially
*/
fcoei_process_events(ss);
/*
* To avoid to check timing too freqently, we check
* if we need skip timing stuff.
*/
start_clock = CURRENT_CLOCK;
if ((start_clock - last_clock) < tmp_delay) {
goto end_timing;
} else {
last_clock = start_clock;
}
/*
* It's time to do timeout checking of solicited exchanges
*/
if (ss->ss_sol_cnt == (&ss->ss_sol_cnt1)) {
if (ss->ss_sol_cnt2 == 0) {
ss->ss_sol_cnt = &ss->ss_sol_cnt2;
} else {
mod_hash_walk(ss->ss_sol_oxid_hash,
fcoei_xch_check, ss);
}
} else {
if (ss->ss_sol_cnt1 == 0) {
ss->ss_sol_cnt = &ss->ss_sol_cnt1;
} else {
mod_hash_walk(ss->ss_sol_oxid_hash,
fcoei_xch_check, ss);
}
}
/*
* It's time to do timeout checking of unsolicited exchange
*/
if (ss->ss_unsol_cnt == (&ss->ss_unsol_cnt1)) {
if (ss->ss_unsol_cnt2 == 0) {
ss->ss_unsol_cnt = &ss->ss_unsol_cnt2;
} else {
mod_hash_walk(ss->ss_unsol_rxid_hash,
fcoei_xch_check, ss);
}
} else {
if (ss->ss_unsol_cnt1 == 0) {
ss->ss_unsol_cnt = &ss->ss_unsol_cnt1;
} else {
mod_hash_walk(ss->ss_unsol_rxid_hash,
fcoei_xch_check, ss);
}
}
/*
* Check if there are exchanges which are ready to complete
*/
fcoei_handle_comp_xch_list(ss);
end_timing:
/*
* Wait for next cycle
*/
mutex_enter(&ss->ss_watchdog_mutex);
ss->ss_flags |= SS_FLAG_WATCHDOG_IDLE;
if (!list_is_empty(&ss->ss_event_list)) {
goto skip_wait;
}
(void) cv_timedwait(&ss->ss_watchdog_cv,
&ss->ss_watchdog_mutex, CURRENT_CLOCK +
(clock_t)tmp_delay);
skip_wait:
ss->ss_flags &= ~SS_FLAG_WATCHDOG_IDLE;
mutex_exit(&ss->ss_watchdog_mutex);
}
/*
* Do clear work before exit
*/
fcoei_clear_watchdog_jobs(ss);
/*
* Watchdog has stopped
*/
ss->ss_flags &= ~SS_FLAG_WATCHDOG_RUNNING;
}
static void
fcoei_clear_watchdog_jobs(fcoei_soft_state_t *ss)
{
fcoei_event_t *ae;
fcoe_frame_t *frm;
mutex_enter(&ss->ss_watchdog_mutex);
while (!list_is_empty(&ss->ss_event_list)) {
ae = (fcoei_event_t *)list_head(&ss->ss_event_list);
list_remove(&ss->ss_event_list, ae);
switch (ae->ae_type) {
case AE_EVENT_SOL_FRAME:
frm = (fcoe_frame_t *)ae->ae_obj;
frm->frm_eport->eport_release_frame(frm);
break;
case AE_EVENT_UNSOL_FRAME:
frm = (fcoe_frame_t *)ae->ae_obj;
frm->frm_eport->eport_free_netb(frm->frm_netb);
frm->frm_eport->eport_release_frame(frm);
break;
case AE_EVENT_PORT:
atomic_dec_32(&ss->ss_port_event_counter);
/* FALLTHROUGH */
case AE_EVENT_RESET:
kmem_free(ae, sizeof (fcoei_event_t));
break;
case AE_EVENT_EXCHANGE:
/* FALLTHROUGH */
default:
break;
}
}
mod_hash_clear(ss->ss_unsol_rxid_hash);
mod_hash_clear(ss->ss_sol_oxid_hash);
while (!list_is_empty(&ss->ss_comp_xch_list)) {
(void) list_remove_head(&ss->ss_comp_xch_list);
}
mutex_exit(&ss->ss_watchdog_mutex);
}
/*
* fcoei_process_events
* Process the events one by one
*
* Input:
* ss = the soft state that will be processed
*
* Return:
* N/A
*
* Comment:
* N/A
*/
static void
fcoei_process_events(fcoei_soft_state_t *ss)
{
fcoei_event_t *ae = NULL;
/*
* It's the only place to delete node from ss_event_list, so we needn't
* hold mutex to check if the list is empty.
*/
ASSERT(!MUTEX_HELD(&ss->ss_watchdog_mutex));
while (list_is_empty(&ss->ss_event_list) == B_FALSE) {
mutex_enter(&ss->ss_watchdog_mutex);
ae = (fcoei_event_t *)list_remove_head(&ss->ss_event_list);
mutex_exit(&ss->ss_watchdog_mutex);
switch (ae->ae_type) {
case AE_EVENT_SOL_FRAME:
fcoei_handle_sol_frame_done((fcoe_frame_t *)ae->ae_obj);
break;
case AE_EVENT_UNSOL_FRAME:
fcoei_process_unsol_frame((fcoe_frame_t *)ae->ae_obj);
break;
case AE_EVENT_EXCHANGE:
fcoei_process_event_exchange(ae);
break;
case AE_EVENT_PORT:
fcoei_process_event_port(ae);
break;
case AE_EVENT_RESET:
fcoei_process_event_reset(ae);
break;
default:
FCOEI_LOG(__FUNCTION__, "unsupported events");
}
}
}
/*
* fcoei_handle_tmout_xch_list
* Complete every exchange in the timed-out xch list of the soft state
*
* Input:
* ss = the soft state that need be handled
*
* Return:
* N/A
*
* Comment:
* When mod_hash_walk is in progress, we can't change the hashtable.
* This is post-walk handling of exchange timing
*/
void
fcoei_handle_comp_xch_list(fcoei_soft_state_t *ss)
{
fcoei_exchange_t *xch = NULL;
while ((xch = list_remove_head(&ss->ss_comp_xch_list)) != NULL) {
fcoei_complete_xch(xch, NULL, xch->xch_fpkt->pkt_state,
xch->xch_fpkt->pkt_reason);
}
}
/*
* fcoei_xch_check
* Check if the exchange timed out or link is down
*
* Input:
* key = rxid of the unsolicited exchange
* val = the unsolicited exchange
* arg = the soft state
*
* Return:
* MH_WALK_CONTINUE = continue to walk
*
* Comment:
* We need send ABTS for timed-out for solicited exchange
* If it's solicited FLOGI, we need set SS_FLAG_FLOGI_FAILED
* If the link is down, we think it has timed out too.
*/
/* ARGSUSED */
static uint32_t
fcoei_xch_check(mod_hash_key_t key, mod_hash_val_t *val, void *arg)
{
fcoei_exchange_t *xch = (fcoei_exchange_t *)val;
ASSERT(xch->xch_ss == arg);
if ((xch->xch_end_tick < CURRENT_CLOCK) &&
(xch->xch_ss->ss_link_state != FC_STATE_OFFLINE)) {
if (xch->xch_flags & XCH_FLAG_IN_SOL_HASH) {
ASSERT(xch->xch_oxid == CMHK(key));
/*
* It's solicited exchange
*/
fcoei_abts_exchange(xch);
if (LA_ELS_FLOGI == ((ls_code_t *)(void *)
xch->xch_fpkt->pkt_cmd)->ls_code) {
/*
* It's solicited FLOGI
*/
xch->xch_ss->ss_flags |= SS_FLAG_FLOGI_FAILED;
}
}
FCOEI_LOG(__FUNCTION__, "oxid-%x/rxid-%x timed out",
xch->xch_oxid, xch->xch_rxid);
xch->xch_flags |= XCH_FLAG_TMOUT;
xch->xch_fpkt->pkt_state = FC_PKT_TIMEOUT;
xch->xch_fpkt->pkt_reason = FC_REASON_ABORTED;
list_insert_tail(&xch->xch_ss->ss_comp_xch_list, xch);
} else if (xch->xch_ss->ss_link_state == FC_STATE_OFFLINE) {
FCOEI_LOG(__FUNCTION__, "oxid-%x/rxid-%x offline complete",
xch->xch_oxid, xch->xch_rxid);
xch->xch_flags |= XCH_FLAG_TMOUT;
xch->xch_fpkt->pkt_state = FC_PKT_PORT_OFFLINE;
xch->xch_fpkt->pkt_reason = FC_REASON_OFFLINE;
list_insert_tail(&xch->xch_ss->ss_comp_xch_list, xch);
}
return (MH_WALK_CONTINUE);
}
/*
* fcoei_init_ifm
* initialize fcoei_frame
*
* Input:
* frm = the frame that ifm need link to
* xch = the exchange that ifm need link to
*
* Return:
* N/A
*
* Comment:
* For solicited frames, it's called after FC frame header initialization
* For unsolicited frames, it's called just after the frame enters fcoei
*/
void
fcoei_init_ifm(fcoe_frame_t *frm, fcoei_exchange_t *xch)
{
FRM2IFM(frm)->ifm_frm = frm;
FRM2IFM(frm)->ifm_xch = xch;
FRM2IFM(frm)->ifm_rctl = FRM_R_CTL(frm);
}
/*
* fcoei_trigger_fp_attach
* Trigger fp_attach for this fcoei port
*
* Input:
* arg = the soft state that fp will attach
*
* Return:
* N/A
*
* Comment:
* N/A
*/
static void
fcoei_trigger_fp_attach(void * arg)
{
fcoei_soft_state_t *ss = (fcoei_soft_state_t *)arg;
dev_info_t *child = NULL;
int rval = NDI_FAILURE;
ndi_devi_alloc_sleep(ss->ss_dip, "fp", DEVI_PSEUDO_NODEID, &child);
if (child == NULL) {
FCOEI_LOG(__FUNCTION__, "can't alloc dev_info");
return;
}
/*
* fp/fctl need this property
*/
if (ddi_prop_update_string(DDI_DEV_T_NONE, child,
"bus-addr", "0,0") != DDI_PROP_SUCCESS) {
FCOEI_LOG(__FUNCTION__, "update bus-addr failed");
(void) ndi_devi_free(child);
return;
}
/*
* If it's physical HBA, fp.conf will register the property.
* fcoei is one software HBA, so we need register it manually
*/
if (ddi_prop_update_int(DDI_DEV_T_NONE, child,
"port", 0) != DDI_PROP_SUCCESS) {
FCOEI_LOG(__FUNCTION__, "update port failed");
(void) ndi_devi_free(child);
return;
}
/*
* It will call fp_attach eventually
*/
rval = ndi_devi_online(child, NDI_ONLINE_ATTACH);
ss->ss_flags &= ~SS_FLAG_TRIGGER_FP_ATTACH;
if (rval != NDI_SUCCESS) {
FCOEI_LOG(__FUNCTION__, "devi_online: %d", rval);
} else {
FCOEI_LOG(__FUNCTION__, "triggered successfully");
}
}
/*
* fcoei_abts_exchange
* Send ABTS to abort solicited exchange
*
* Input:
* xch = the exchange that will be aborted
*
* Return:
* N/A
*
* Comment:
* ABTS frame uses the same oxid as the exchange
*/
static void
fcoei_abts_exchange(fcoei_exchange_t *xch)
{
fc_packet_t *fpkt = xch->xch_fpkt;
fcoe_frame_t *frm = NULL;
/*
* BLS_ABTS doesn't contain any other payload except FCFH
*/
frm = xch->xch_ss->ss_eport->eport_alloc_frame(xch->xch_ss->ss_eport,
FCFH_SIZE, NULL);
if (frm == NULL) {
FCOEI_LOG(__FUNCTION__, "can't alloc frame: %p", xch);
return;
}
FFM_R_CTL(0x81, frm);
FFM_D_ID(fpkt->pkt_cmd_fhdr.d_id, frm);
FFM_S_ID(fpkt->pkt_cmd_fhdr.s_id, frm);
FFM_F_CTL(0x090000, frm);
FFM_SEQ_ID(0x01, frm);
FFM_OXID(xch->xch_oxid, frm);
FFM_RXID(xch->xch_rxid, frm);
fcoei_init_ifm(frm, xch);
xch->xch_ss->ss_eport->eport_tx_frame(frm);
}
/*
* fcoei_complete_xch
* Complete the exchange
*
* Input:
* xch = the exchange that will be completed
* frm = newly-allocated frame that has not been submitted
* pkt_state = LV fpkt state
* pkt_reason = LV fpkt reason
*
* Return:
* N/A
*
* Comment:
* N/A
*/
void
fcoei_complete_xch(fcoei_exchange_t *xch, fcoe_frame_t *frm,
uint8_t pkt_state, uint8_t pkt_reason)
{
mod_hash_val_t val;
if (pkt_state != FC_PKT_SUCCESS) {
FCOEI_LOG(__FUNCTION__, "FHDR: %x/%x/%x, %x/%x/%x",
xch->xch_fpkt->pkt_cmd_fhdr.r_ctl,
xch->xch_fpkt->pkt_cmd_fhdr.f_ctl,
xch->xch_fpkt->pkt_cmd_fhdr.type,
xch->xch_fpkt->pkt_resp_fhdr.r_ctl,
xch->xch_fpkt->pkt_resp_fhdr.f_ctl,
xch->xch_fpkt->pkt_resp_fhdr.type);
FCOEI_LOG(__FUNCTION__, "%p/%p/%x/%x",
xch, frm, pkt_state, pkt_reason);
}
if (frm != NULL) {
/*
* It's newly-allocated frame , which we haven't sent out
*/
xch->xch_ss->ss_eport->eport_free_netb(frm->frm_netb);
xch->xch_ss->ss_eport->eport_release_frame(frm);
FCOEI_LOG(__FUNCTION__, "xch: %p, not submitted", xch);
}
/*
* If xch is in hash table, we need remove it
*/
if (xch->xch_flags & XCH_FLAG_IN_SOL_HASH) {
(void) mod_hash_remove(xch->xch_ss->ss_sol_oxid_hash,
FMHK(xch->xch_oxid), &val);
ASSERT((fcoei_exchange_t *)val == xch);
xch->xch_flags &= ~XCH_FLAG_IN_SOL_HASH;
} else if (xch->xch_flags & XCH_FLAG_IN_UNSOL_HASH) {
(void) mod_hash_remove(xch->xch_ss->ss_unsol_rxid_hash,
FMHK(xch->xch_rxid), &val);
ASSERT((fcoei_exchange_t *)val == xch);
xch->xch_flags &= ~XCH_FLAG_IN_UNSOL_HASH;
} else {
FCOEI_LOG(__FUNCTION__, "xch not in any hash: %p", xch);
}
xch->xch_fpkt->pkt_state = pkt_state;
xch->xch_fpkt->pkt_reason = pkt_reason;
if (xch->xch_fpkt->pkt_tran_flags & FC_TRAN_NO_INTR) {
FCOEI_LOG(__FUNCTION__, "polled xch is done: %p", xch);
sema_v(&xch->xch_sema);
} else {
xch->xch_fpkt->pkt_comp(xch->xch_fpkt);
}
}