fcp.c revision fcf3ce441efd61da9bb2884968af01cb7c1452cc
/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* FCP mdb module
*/
#include <sys/mdb_modapi.h>
#include <sys/mutex.h>
#include <sys/modctl.h>
#include <sys/scsi/scsi.h>
#include <sys/sunndi.h>
#include <sys/fibre-channel/fc.h>
#include <sys/fibre-channel/ulp/fcpvar.h>
static struct fcp_port port;
static struct fcp_tgt tgt;
static struct fcp_lun lun;
static uint32_t tgt_hash_index;
/*
* Leadville fcp walker/dcmd code
*/
static int
fcp_walk_i(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL &&
mdb_readvar(&wsp->walk_addr, "fcp_port_head") == -1) {
mdb_warn("failed to read 'fcp_port_head'");
return (WALK_ERR);
}
wsp->walk_data = mdb_alloc(sizeof (struct fcp_port), UM_SLEEP);
return (WALK_NEXT);
}
static int
fcp_walk_s(mdb_walk_state_t *wsp)
{
int status;
if (wsp->walk_addr == NULL)
return (WALK_DONE);
if (mdb_vread(wsp->walk_data, sizeof (struct fcp_port),
wsp->walk_addr) == -1) {
mdb_warn("failed to read fcp_port at %p", wsp->walk_addr);
return (WALK_DONE);
}
status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata);
wsp->walk_addr =
(uintptr_t)(((struct fcp_port *)wsp->walk_data)->port_next);
return (status);
}
/*
* The walker's fini function is invoked at the end of each walk.
*/
static void
fcp_walk_f(mdb_walk_state_t *wsp)
{
mdb_free(wsp->walk_data, sizeof (struct fcp_port));
}
static int
fcp(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
struct fcp_port pinfo;
if (argc != 0) {
return (DCMD_USAGE);
}
if (!(flags & DCMD_ADDRSPEC)) {
if (mdb_walk_dcmd("fcp", "fcp",
argc, argv) == -1) {
mdb_warn("failed to walk 'fcp_port_head'");
return (DCMD_ERR);
}
return (DCMD_OK);
}
mdb_printf("FCP structure at %p\n", addr);
/*
* For each port, we just need to read the fc_fca_port_t struct, read
* the port_handle
*/
if (mdb_vread(&pinfo, sizeof (struct fcp_port), addr) !=
sizeof (struct fcp_port)) {
mdb_warn("failed to read fcp_port at %p", addr);
return (DCMD_OK);
}
mdb_printf(" mutex : 0x%-08x\n", pinfo.port_mutex);
mdb_printf(" ipkt_list : 0x%p\n", pinfo.port_ipkt_list);
mdb_printf(" state : 0x%-08x\n", pinfo.port_state);
mdb_printf(" phys_state : 0x%-08x\n", pinfo.port_phys_state);
mdb_printf(" top : %u\n", pinfo.port_topology);
mdb_printf(" sid : 0x%-06x\n", pinfo.port_id);
mdb_printf(" reset_list : 0x%p\n", pinfo.port_reset_list);
mdb_printf(" link_cnt : %u\n", pinfo.port_link_cnt);
mdb_printf(" deadline : %d\n", pinfo.port_deadline);
mdb_printf(" port wwn : "
"%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
pinfo.port_pwwn.raw_wwn[0], pinfo.port_pwwn.raw_wwn[1],
pinfo.port_pwwn.raw_wwn[2], pinfo.port_pwwn.raw_wwn[3],
pinfo.port_pwwn.raw_wwn[4], pinfo.port_pwwn.raw_wwn[5],
pinfo.port_pwwn.raw_wwn[6], pinfo.port_pwwn.raw_wwn[7]);
mdb_printf(" node wwn : "
"%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
pinfo.port_nwwn.raw_wwn[0], pinfo.port_nwwn.raw_wwn[1],
pinfo.port_nwwn.raw_wwn[2], pinfo.port_nwwn.raw_wwn[3],
pinfo.port_nwwn.raw_wwn[4], pinfo.port_nwwn.raw_wwn[5],
pinfo.port_nwwn.raw_wwn[6], pinfo.port_nwwn.raw_wwn[7]);
mdb_printf(" handle : 0x%p\n", pinfo.port_fp_handle);
mdb_printf(" cmd_mutex : 0x%-08x\n", pinfo.port_pkt_mutex);
mdb_printf(" ncmds : %u\n", pinfo.port_npkts);
mdb_printf(" pkt_head : 0x%p\n", pinfo.port_pkt_head);
mdb_printf(" pkt_tail : 0x%p\n", pinfo.port_pkt_tail);
mdb_printf(" ipkt_cnt : %d\n", pinfo.port_ipkt_cnt);
mdb_printf(" instance : %u\n", pinfo.port_instance);
mdb_printf(" max_exch : %u\n", pinfo.port_max_exch);
mdb_printf(" cmds_aborted : 0x%-08x\n",
pinfo.port_reset_action);
mdb_printf(" cmds_dma_flags : 0x%-08x\n",
pinfo.port_cmds_dma_flags);
mdb_printf(" fcp_dma : 0x%-08x\n", pinfo.port_fcp_dma);
mdb_printf(" priv_pkt_len : %u\n", pinfo.port_priv_pkt_len);
mdb_printf(" data_dma_attr : 0x%-08x\n",
pinfo.port_data_dma_attr);
mdb_printf(" cmd_dma_attr : 0x%-08x\n",
pinfo.port_cmd_dma_attr);
mdb_printf(" resp_dma_attr : 0x%-08x\n",
pinfo.port_resp_dma_attr);
mdb_printf(" dma_acc_attr : 0x%-08x\n",
pinfo.port_dma_acc_attr);
mdb_printf(" tran : 0x%p\n", pinfo.port_tran);
mdb_printf(" dip : 0x%p\n", pinfo.port_dip);
mdb_printf(" reset_notify_listf: 0x%p\n",
pinfo.port_reset_notify_listf);
mdb_printf(" event_defs : 0x%p\n", pinfo.port_ndi_event_defs);
mdb_printf(" event_hdl : 0x%p\n", pinfo.port_ndi_event_hdl);
mdb_printf(" events : 0x%p\n", pinfo.port_ndi_events);
mdb_printf(" tgt_hash_table : 0x%p\n", pinfo.port_tgt_hash_table);
mdb_printf(" mpxio : %d\n", pinfo.port_mpxio);
mdb_printf("\n");
return (DCMD_OK);
}
/*
* Leadville cmds walker/dcmd code
*/
static int
cmds_walk_i(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL) {
mdb_warn("Can not perform global walk");
return (WALK_ERR);
}
/*
* Input should be a fcp_lun, so read it to get the fcp_pkt
* lists's head
*/
if (mdb_vread(&lun, sizeof (struct fcp_lun), wsp->walk_addr) !=
sizeof (struct fcp_lun)) {
mdb_warn("Unable to read in the fcp_lun structure address\n");
return (WALK_ERR);
}
wsp->walk_addr = (uintptr_t)(lun.lun_pkt_head);
wsp->walk_data = mdb_alloc(sizeof (struct fcp_pkt), UM_SLEEP);
return (WALK_NEXT);
}
static int
cmds_walk_s(mdb_walk_state_t *wsp)
{
int status;
if (wsp->walk_addr == NULL)
return (WALK_DONE);
if (mdb_vread(wsp->walk_data, sizeof (struct fcp_pkt),
wsp->walk_addr) == -1) {
mdb_warn("failed to read fcp_pkt at %p", wsp->walk_addr);
return (WALK_DONE);
}
status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata);
wsp->walk_addr =
(uintptr_t)(((struct fcp_pkt *)wsp->walk_data)->cmd_forw);
return (status);
}
/*
* The walker's fini function is invoked at the end of each walk.
*/
static void
cmds_walk_f(mdb_walk_state_t *wsp)
{
mdb_free(wsp->walk_data, sizeof (struct fcp_pkt));
}
/*
* Leadville luns walker/dcmd code
*/
static int
luns_walk_i(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL) {
mdb_warn("Can not perform global walk");
return (WALK_ERR);
}
/*
* Input should be a fcp_tgt, so read it to get the fcp_lun
* lists's head
*/
if (mdb_vread(&tgt, sizeof (struct fcp_tgt), wsp->walk_addr) !=
sizeof (struct fcp_tgt)) {
mdb_warn("Unable to read in the fcp_tgt structure address\n");
return (WALK_ERR);
}
wsp->walk_addr = (uintptr_t)(tgt.tgt_lun);
wsp->walk_data = mdb_alloc(sizeof (struct fcp_lun), UM_SLEEP);
return (WALK_NEXT);
}
static int
luns_walk_s(mdb_walk_state_t *wsp)
{
int status;
if (wsp->walk_addr == NULL)
return (WALK_DONE);
if (mdb_vread(wsp->walk_data, sizeof (struct fcp_lun),
wsp->walk_addr) == -1) {
mdb_warn("failed to read fcp_pkt at %p", wsp->walk_addr);
return (WALK_DONE);
}
status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata);
wsp->walk_addr =
(uintptr_t)(((struct fcp_lun *)wsp->walk_data)->lun_next);
return (status);
}
/*
* The walker's fini function is invoked at the end of each walk.
*/
static void
luns_walk_f(mdb_walk_state_t *wsp)
{
mdb_free(wsp->walk_data, sizeof (struct fcp_lun));
}
/*
* Leadville targets walker/dcmd code
*/
static int
targets_walk_i(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL) {
mdb_warn("Can not perform global walk\n");
return (WALK_ERR);
}
/*
* Input should be a fcp_port, so read it to get the port_tgt
* table's head
*/
if (mdb_vread(&port, sizeof (struct fcp_port), wsp->walk_addr) !=
sizeof (struct fcp_port)) {
mdb_warn("Unable to read in the port structure address\n");
return (WALK_ERR);
}
tgt_hash_index = 0;
while ((port.port_tgt_hash_table[tgt_hash_index] == NULL) &&
(tgt_hash_index < FCP_NUM_HASH)) {
tgt_hash_index++;
}
wsp->walk_addr = (uintptr_t)(port.port_tgt_hash_table[tgt_hash_index]);
wsp->walk_data = mdb_alloc(sizeof (struct fcp_tgt), UM_SLEEP);
return (WALK_NEXT);
}
static int
targets_walk_s(mdb_walk_state_t *wsp)
{
int status;
if ((wsp->walk_addr == NULL) &&
(tgt_hash_index >= (FCP_NUM_HASH - 1))) {
return (WALK_DONE);
}
if (mdb_vread(wsp->walk_data, sizeof (struct fcp_tgt),
wsp->walk_addr) == -1) {
mdb_warn("failed to read fcp_tgt at %p", wsp->walk_addr);
return (WALK_DONE);
}
status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata);
wsp->walk_addr =
(uintptr_t)(((struct fcp_tgt *)wsp->walk_data)->tgt_next);
if (wsp->walk_addr == NULL) {
/*
* locate the next hash list
*/
tgt_hash_index++;
while ((port.port_tgt_hash_table[tgt_hash_index] == NULL) &&
(tgt_hash_index < FCP_NUM_HASH)) {
tgt_hash_index++;
}
if (tgt_hash_index == FCP_NUM_HASH) {
/* You're done */
return (status);
}
wsp->walk_addr =
(uintptr_t)(port.port_tgt_hash_table[tgt_hash_index]);
}
return (status);
}
/*
* The walker's fini function is invoked at the end of each walk.
*/
static void
targets_walk_f(mdb_walk_state_t *wsp)
{
mdb_free(wsp->walk_data, sizeof (struct fcp_tgt));
}
/*
* Leadville fcp_ipkt walker/dcmd code
*/
static int
ipkt_walk_i(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL) {
mdb_warn("The address of a fcp_port"
" structure must be given\n");
return (WALK_ERR);
}
/*
* Input should be a fcp_port, so read it to get the ipkt
* list's head
*/
if (mdb_vread(&port, sizeof (struct fcp_port), wsp->walk_addr) !=
sizeof (struct fcp_port)) {
mdb_warn("Failed to read in the fcp_port"
" at 0x%p\n", wsp->walk_addr);
return (WALK_ERR);
}
wsp->walk_addr = (uintptr_t)(port.port_ipkt_list);
wsp->walk_data = mdb_alloc(sizeof (struct fcp_ipkt), UM_SLEEP);
return (WALK_NEXT);
}
static int
ipkt_walk_s(mdb_walk_state_t *wsp)
{
int status;
if (wsp->walk_addr == NULL)
return (WALK_DONE);
if (mdb_vread(wsp->walk_data, sizeof (struct fcp_ipkt),
wsp->walk_addr) == -1) {
mdb_warn("Failed to read in the fcp_ipkt"
" at 0x%p\n", wsp->walk_addr);
return (WALK_DONE);
}
status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata);
wsp->walk_addr =
(uintptr_t)(((struct fcp_ipkt *)wsp->walk_data)->ipkt_next);
return (status);
}
/*
* The walker's fini function is invoked at the end of each walk.
*/
static void
ipkt_walk_f(mdb_walk_state_t *wsp)
{
mdb_free(wsp->walk_data, sizeof (struct fcp_ipkt));
}
/*
* Leadville fcp_pkt walker/dcmd code
*/
static int
pkt_walk_i(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL) {
mdb_warn("The address of a fcp_port"
" structure must be given\n");
return (WALK_ERR);
}
/*
* Input should be an fcp_port, so read it to get the pkt
* list's head
*/
if (mdb_vread(&port, sizeof (struct fcp_port), wsp->walk_addr) !=
sizeof (struct fcp_port)) {
mdb_warn("Failed to read in the fcp_port"
" at 0x%p\n", wsp->walk_addr);
return (WALK_ERR);
}
wsp->walk_addr = (uintptr_t)(port.port_pkt_head);
wsp->walk_data = mdb_alloc(sizeof (struct fcp_pkt), UM_SLEEP);
return (WALK_NEXT);
}
static int
pkt_walk_s(mdb_walk_state_t *wsp)
{
int status;
if (wsp->walk_addr == NULL)
return (WALK_DONE);
if (mdb_vread(wsp->walk_data, sizeof (struct fcp_pkt),
wsp->walk_addr) == -1) {
mdb_warn("Failed to read in the fcp_pkt"
" at 0x%p\n", wsp->walk_addr);
return (WALK_DONE);
}
status = wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata);
wsp->walk_addr =
(uintptr_t)(((struct fcp_pkt *)wsp->walk_data)->cmd_next);
return (status);
}
/*
* The walker's fini function is invoked at the end of each walk.
*/
static void
pkt_walk_f(mdb_walk_state_t *wsp)
{
mdb_free(wsp->walk_data, sizeof (struct fcp_pkt));
}
/*
* MDB module linkage information:
*
* We declare a list of structures describing our dcmds, a list of structures
* describing our walkers, and a function named _mdb_init to return a pointer
* to our module information.
*/
static const mdb_dcmd_t dcmds[] = {
{ "fcp", NULL, "Leadville fcp instances", fcp },
{ NULL }
};
static const mdb_walker_t walkers[] = {
{ "fcp", "Walk list of Leadville fcp instances",
fcp_walk_i, fcp_walk_s, fcp_walk_f },
{ "cmds", "Walk list of SCSI commands in fcp's per-lun queue",
cmds_walk_i, cmds_walk_s, cmds_walk_f },
{ "luns", "Walk list of LUNs in an fcp target",
luns_walk_i, luns_walk_s, luns_walk_f },
{ "targets", "Walk list of fcp targets attached to the local port",
targets_walk_i, targets_walk_s, targets_walk_f },
{ "fcp_ipkt", "Walk list of internal packets queued on a local port",
ipkt_walk_i, ipkt_walk_s, ipkt_walk_f},
{ "fcp_pkt", "Walk list of packets queued on a local port",
pkt_walk_i, pkt_walk_s, pkt_walk_f},
{ NULL }
};
static const mdb_modinfo_t modinfo = {
MDB_API_VERSION, dcmds, walkers
};
const mdb_modinfo_t *
_mdb_init(void)
{
return (&modinfo);
}