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numam-spdk/lib/iscsi/tgt_node.c
Daniel Verkamp 7ac9a4ecbb event: remove spdk_event_allocate() next parameter 
The 'next' event pointer was never used in the entire code base (always
NULL).

Change-Id: I75f999d3a2e10512d86edec1a5a46ef263e2635b
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-01-05 11:57:18 -07:00

1139 lines
29 KiB
C
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/*-
* BSD LICENSE
*
* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*/
#include <inttypes.h>
#include <stdint.h>
#include <ctype.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <pthread.h>
#include <time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include "spdk/event.h"
#include "spdk/conf.h"
#include "spdk/net.h"
#include "spdk_internal/log.h"
#include "iscsi/iscsi.h"
#include "iscsi/conn.h"
#include "iscsi/tgt_node.h"
#include "iscsi/portal_grp.h"
#include "iscsi/init_grp.h"
#include "spdk/scsi.h"
#include "iscsi/task.h"
#define MAX_TMPBUF 1024
#define MAX_MASKBUF 128
static int
spdk_iscsi_tgt_node_allow_ipv6(const char *netmask, const char *addr)
{
struct in6_addr in6_mask;
struct in6_addr in6_addr;
char mask[MAX_MASKBUF];
const char *p;
size_t n;
int bits, bmask;
int i;
if (netmask[0] != '[')
return 0;
p = strchr(netmask, ']');
if (p == NULL)
return 0;
n = p - (netmask + 1);
if (n + 1 > sizeof mask)
return 0;
memcpy(mask, netmask + 1, n);
mask[n] = '\0';
p++;
if (p[0] == '/') {
bits = (int) strtol(p + 1, NULL, 10);
if (bits < 0 || bits > 128)
return 0;
} else {
bits = 128;
}
#if 0
SPDK_TRACELOG(SPDK_TRACE_ISCSI, "input %s\n", addr);
SPDK_TRACELOG(SPDK_TRACE_ISCSI, "mask %s / %d\n", mask, bits);
#endif
/* presentation to network order binary */
if (inet_pton(AF_INET6, mask, &in6_mask) <= 0
|| inet_pton(AF_INET6, addr, &in6_addr) <= 0) {
return 0;
}
/* check 128bits */
for (i = 0; i < (bits / 8); i++) {
if (in6_mask.s6_addr[i] != in6_addr.s6_addr[i])
return 0;
}
if (bits % 8) {
bmask = (0xffU << (8 - (bits % 8))) & 0xffU;
if ((in6_mask.s6_addr[i] & bmask) != (in6_addr.s6_addr[i] & bmask))
return 0;
}
/* match */
return 1;
}
static int
spdk_iscsi_tgt_node_allow_ipv4(const char *netmask, const char *addr)
{
struct in_addr in4_mask;
struct in_addr in4_addr;
char mask[MAX_MASKBUF];
const char *p;
uint32_t bmask;
size_t n;
int bits;
p = strchr(netmask, '/');
if (p == NULL) {
p = netmask + strlen(netmask);
}
n = p - netmask;
if (n + 1 > sizeof mask)
return 0;
memcpy(mask, netmask, n);
mask[n] = '\0';
if (p[0] == '/') {
bits = (int) strtol(p + 1, NULL, 10);
if (bits < 0 || bits > 32)
return 0;
} else {
bits = 32;
}
/* presentation to network order binary */
if (inet_pton(AF_INET, mask, &in4_mask) <= 0
|| inet_pton(AF_INET, addr, &in4_addr) <= 0) {
return 0;
}
/* check 32bits */
bmask = (0xffffffffULL << (32 - bits)) & 0xffffffffU;
if ((ntohl(in4_mask.s_addr) & bmask) != (ntohl(in4_addr.s_addr) & bmask))
return 0;
/* match */
return 1;
}
static int
spdk_iscsi_tgt_node_allow_netmask(const char *netmask, const char *addr)
{
if (netmask == NULL || addr == NULL)
return 0;
if (strcasecmp(netmask, "ALL") == 0)
return 1;
if (netmask[0] == '[') {
/* IPv6 */
if (spdk_iscsi_tgt_node_allow_ipv6(netmask, addr))
return 1;
} else {
/* IPv4 */
if (spdk_iscsi_tgt_node_allow_ipv4(netmask, addr))
return 1;
}
return 0;
}
int
spdk_iscsi_tgt_node_access(struct spdk_iscsi_conn *conn,
struct spdk_iscsi_tgt_node *target, const char *iqn, const char *addr)
{
struct spdk_iscsi_portal_grp *pg;
struct spdk_iscsi_init_grp *igp;
int rc;
int i, j, k;
if (conn == NULL || target == NULL || iqn == NULL || addr == NULL)
return 0;
pg = conn->portal->group;
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "pg=%d, iqn=%s, addr=%s\n",
pg->tag, iqn, addr);
for (i = 0; i < target->maxmap; i++) {
/* skip excluding self portal group tag */
if (pg != target->map[i].pg)
continue;
/* iqn is initiator group? */
igp = target->map[i].ig;
for (j = 0; j < igp->ninitiators; j++) {
/* deny initiators */
if (igp->initiators[j][0] == '!'
&& (strcasecmp(&igp->initiators[j][1], "ALL") == 0
|| strcasecmp(&igp->initiators[j][1], iqn) == 0)) {
/* NG */
SPDK_TRACELOG(SPDK_TRACE_ISCSI,
"access denied from %s (%s) to %s (%s:%s,%d)\n",
iqn, addr, target->name, conn->portal->host,
conn->portal->port, conn->portal->group->tag);
return 0;
}
/* allow initiators */
if (strcasecmp(igp->initiators[j], "ALL") == 0
|| strcasecmp(igp->initiators[j], iqn) == 0) {
/* OK iqn, check netmask */
if (igp->nnetmasks == 0) {
/* OK, empty netmask as ALL */
return 1;
}
for (k = 0; k < igp->nnetmasks; k++) {
SPDK_TRACELOG(SPDK_TRACE_DEBUG,
"netmask=%s, addr=%s\n",
igp->netmasks[k], addr);
rc = spdk_iscsi_tgt_node_allow_netmask(igp->netmasks[k], addr);
if (rc > 0) {
/* OK netmask */
return 1;
}
}
/* NG netmask in this group */
}
}
}
/* NG */
SPDK_TRACELOG(SPDK_TRACE_ISCSI, "access denied from %s (%s) to %s (%s:%s,%d)\n",
iqn, addr, target->name, conn->portal->host,
conn->portal->port, conn->portal->group->tag);
return 0;
}
static int
spdk_iscsi_tgt_node_visible(struct spdk_iscsi_tgt_node *target, const char *iqn, int pg_tag)
{
struct spdk_iscsi_init_grp *igp;
int match_pg_tag;
int i, j;
if (target == NULL || iqn == NULL)
return 0;
/* pg_tag exist map? */
match_pg_tag = 0;
for (i = 0; i < target->maxmap; i++) {
if (target->map[i].pg->tag == pg_tag) {
match_pg_tag = 1;
break;
}
}
if (match_pg_tag == 0) {
/* cat't access from pg_tag */
return 0;
}
for (i = 0; i < target->maxmap; i++) {
/* iqn is initiator group? */
igp = target->map[i].ig;
for (j = 0; j < igp->ninitiators; j++) {
if (igp->initiators[j][0] == '!'
&& (strcasecmp(&igp->initiators[j][1], "ALL") == 0
|| strcasecmp(&igp->initiators[j][1], iqn) == 0)) {
/* NG */
return 0;
}
if (strcasecmp(igp->initiators[j], "ALL") == 0
|| strcasecmp(igp->initiators[j], iqn) == 0) {
/* OK iqn, no check addr */
return 1;
}
}
}
/* NG */
return 0;
}
static int
spdk_iscsi_portal_grp_is_visible(struct spdk_iscsi_tgt_node *target,
const char *iqn, int pg_tag)
{
struct spdk_iscsi_init_grp *igp;
int match_idx;
int i, j;
if (target == NULL || iqn == NULL)
return 0;
match_idx = -1;
for (i = 0; i < target->maxmap; i++) {
if (target->map[i].pg->tag == pg_tag) {
match_idx = i;
break;
}
}
if (match_idx < 0) {
/* cant't find pg_tag */
return 0;
}
/* iqn is initiator group? */
igp = target->map[match_idx].ig;
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "iqn=%s, pg=%d, ig=%d\n", iqn, pg_tag, igp->tag);
for (j = 0; j < igp->ninitiators; j++) {
if (igp->initiators[j][0] == '!'
&& (strcasecmp(&igp->initiators[j][1], "ALL") == 0
|| strcasecmp(&igp->initiators[j][1], iqn) == 0)) {
/* NG */
return 0;
}
if (strcasecmp(igp->initiators[j], "ALL") == 0
|| strcasecmp(igp->initiators[j], iqn) == 0) {
/* OK iqn, no check addr */
return 1;
}
}
/* NG */
return 0;
}
int
spdk_iscsi_send_tgts(struct spdk_iscsi_conn *conn, const char *iiqn,
const char *iaddr, const char *tiqn, uint8_t *data, int alloc_len,
int data_len)
{
char buf[MAX_TMPBUF];
struct spdk_iscsi_portal_grp *pg;
struct spdk_iscsi_portal *p;
struct spdk_iscsi_tgt_node *target;
char *host;
int total;
int len;
int rc;
int pg_tag;
int i, j, k;
if (conn == NULL)
return 0;
total = data_len;
if (alloc_len < 1) {
return 0;
}
if (total > alloc_len) {
total = alloc_len;
data[total - 1] = '\0';
return total;
}
if (alloc_len - total < 1) {
SPDK_ERRLOG("data space small %d\n", alloc_len);
return total;
}
pthread_mutex_lock(&g_spdk_iscsi.mutex);
for (i = 0; i < MAX_ISCSI_TARGET_NODE; i++) {
target = g_spdk_iscsi.target[i];
if (target == NULL)
continue;
if (strcasecmp(tiqn, "ALL") != 0
&& strcasecmp(tiqn, target->name) != 0) {
continue;
}
rc = spdk_iscsi_tgt_node_visible(target, iiqn,
conn->portal->group->tag);
if (rc == 0) {
continue;
}
/* DO SENDTARGETS */
len = snprintf((char *) data + total, alloc_len - total,
"TargetName=%s", target->name);
total += len + 1;
for (j = 0; j < target->maxmap; j++) {
pg_tag = target->map[j].pg->tag;
/* skip same pg_tag */
for (k = 0; k < j; k++) {
if (target->map[k].pg->tag == pg_tag) {
goto skip_pg_tag;
}
}
rc = spdk_iscsi_portal_grp_is_visible(target, iiqn, pg_tag);
if (rc == 0) {
SPDK_TRACELOG(SPDK_TRACE_DEBUG,
"SKIP pg=%d, iqn=%s for %s from %s (%s)\n",
pg_tag, tiqn, target->name, iiqn, iaddr);
goto skip_pg_tag;
}
/* write to data */
TAILQ_FOREACH(pg, &g_spdk_iscsi.pg_head, tailq) {
if (pg->tag != pg_tag)
continue;
TAILQ_FOREACH(p, &pg->head, tailq) {
if (alloc_len - total < 1) {
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
SPDK_ERRLOG("data space small %d\n", alloc_len);
return total;
}
host = p->host;
/* wildcard? */
if (strcasecmp(host, "[::]") == 0
|| strcasecmp(host, "[*]") == 0
|| strcasecmp(host, "0.0.0.0") == 0
|| strcasecmp(host, "*") == 0) {
if ((strcasecmp(host, "[::]") == 0
|| strcasecmp(host, "[*]") == 0)
&& spdk_sock_is_ipv6(conn->sock)) {
snprintf(buf, sizeof buf, "[%s]",
conn->target_addr);
host = buf;
} else if ((strcasecmp(host, "0.0.0.0") == 0
|| strcasecmp(host, "*") == 0)
&& spdk_sock_is_ipv4(conn->sock)) {
snprintf(buf, sizeof buf, "%s",
conn->target_addr);
host = buf;
} else {
/* skip portal for the family */
continue;
}
}
SPDK_TRACELOG(SPDK_TRACE_DEBUG,
"TargetAddress=%s:%s,%d\n",
host, p->port, pg->tag);
len = snprintf((char *) data + total,
alloc_len - total,
"TargetAddress=%s:%s,%d",
host, p->port, pg->tag);
total += len + 1;
}
}
skip_pg_tag:
;
}
}
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
return total;
}
struct spdk_iscsi_tgt_node *
spdk_iscsi_find_tgt_node(const char *target_name)
{
struct spdk_iscsi_tgt_node *target;
int i;
if (target_name == NULL)
return NULL;
for (i = 0; i < MAX_ISCSI_TARGET_NODE; i++) {
target = g_spdk_iscsi.target[i];
if (target == NULL)
continue;
if (strcasecmp(target_name, target->name) == 0) {
return target;
}
}
SPDK_TRACELOG(SPDK_TRACE_ISCSI, "can't find target %s\n", target_name);
return NULL;
}
struct spdk_iscsi_init_grp *
spdk_iscsi_find_init_grp(int tag)
{
struct spdk_iscsi_init_grp *ig;
TAILQ_FOREACH(ig, &g_spdk_iscsi.ig_head, tailq) {
if (ig->tag == tag) {
return ig;
}
}
return NULL;
}
static int
spdk_check_iscsi_name(const char *name)
{
const unsigned char *up = (const unsigned char *) name;
size_t n;
/* valid iSCSI name? */
for (n = 0; up[n] != 0; n++) {
if (up[n] > 0x00U && up[n] <= 0x2cU)
return -1;
if (up[n] == 0x2fU)
return -1;
if (up[n] >= 0x3bU && up[n] <= 0x40U)
return -1;
if (up[n] >= 0x5bU && up[n] <= 0x60U)
return -1;
if (up[n] >= 0x7bU && up[n] <= 0x7fU)
return -1;
if (isspace(up[n]))
return -1;
}
/* valid format? */
if (strncasecmp(name, "iqn.", 4) == 0) {
/* iqn.YYYY-MM.reversed.domain.name */
if (!isdigit(up[4]) || !isdigit(up[5]) || !isdigit(up[6])
|| !isdigit(up[7]) || up[8] != '-' || !isdigit(up[9])
|| !isdigit(up[10]) || up[11] != '.') {
SPDK_ERRLOG("invalid iqn format. "
"expect \"iqn.YYYY-MM.reversed.domain.name\"\n");
return -1;
}
} else if (strncasecmp(name, "eui.", 4) == 0) {
/* EUI-64 -> 16bytes */
/* XXX */
} else if (strncasecmp(name, "naa.", 4) == 0) {
/* 64bit -> 16bytes, 128bit -> 32bytes */
/* XXX */
}
/* OK */
return 0;
}
static void
spdk_iscsi_tgt_node_destruct(struct spdk_iscsi_tgt_node *target)
{
int i;
if (target == NULL) {
return;
}
free(target->name);
free(target->alias);
spdk_scsi_dev_destruct(target->dev);
for (i = 0; i < target->maxmap; i++) {
target->map[i].pg->ref--;
target->map[i].ig->ref--;
}
pthread_mutex_destroy(&target->mutex);
free(target);
}
static int spdk_get_next_available_tgt_number(void)
{
int i;
for (i = 0; i < MAX_ISCSI_TARGET_NODE; i++) {
if (g_spdk_iscsi.target[i] == NULL)
break;
}
return i; //Returns MAX_TARGET if none available.
}
static struct spdk_iscsi_tgt_node_map *
spdk_iscsi_tgt_node_add_map(struct spdk_iscsi_tgt_node *target,
int pg_tag, int ig_tag)
{
struct spdk_iscsi_tgt_node_map *map;
struct spdk_iscsi_portal_grp *pg;
struct spdk_iscsi_init_grp *ig;
if (target->maxmap >= MAX_TARGET_MAP) {
SPDK_ERRLOG("%s: no space for new map\n", target->name);
return NULL;
}
pthread_mutex_lock(&g_spdk_iscsi.mutex);
pg = spdk_iscsi_portal_grp_find_by_tag(pg_tag);
if (pg == NULL) {
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
SPDK_ERRLOG("%s: PortalGroup%d not found\n", target->name, pg_tag);
return NULL;
}
if (pg->state != GROUP_READY) {
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
SPDK_ERRLOG("%s: PortalGroup%d not active\n", target->name, pg_tag);
return NULL;
}
ig = spdk_iscsi_find_init_grp(ig_tag);
if (ig == NULL) {
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
SPDK_ERRLOG("%s: InitiatorGroup%d not found\n", target->name, ig_tag);
return NULL;
}
if (ig->state != GROUP_READY) {
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
SPDK_ERRLOG("%s: InitiatorGroup%d not active\n", target->name, ig_tag);
return NULL;
}
pg->ref++;
ig->ref++;
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
map = &target->map[target->maxmap];
map->pg = pg;
map->ig = ig;
target->maxmap++;
return map;
}
_spdk_iscsi_tgt_node *
spdk_iscsi_tgt_node_construct(int target_index,
const char *name, const char *alias,
int *pg_tag_list, int *ig_tag_list, uint16_t num_maps,
char *lun_name_list[], int *lun_id_list, int num_luns,
int queue_depth,
int auth_chap_disabled, int auth_chap_required, int auth_chap_mutual, int auth_group,
int header_digest, int data_digest)
{
char fullname[MAX_TMPBUF], port_name[MAX_TMPBUF];
struct spdk_iscsi_tgt_node *target;
struct spdk_iscsi_tgt_node_map *map;
struct spdk_iscsi_portal_grp *unique_portal_groups[SPDK_SCSI_DEV_MAX_PORTS];
struct spdk_iscsi_portal_grp *pg;
int num_unique_portal_groups;
int i, j, rc;
if (auth_chap_disabled && auth_chap_required) {
SPDK_ERRLOG("auth_chap_disabled and auth_chap_required are mutually exclusive\n");
return NULL;
}
if ((num_maps > MAX_TARGET_MAP) || (num_maps == 0)) {
SPDK_ERRLOG("num_maps = %d out of range\n", num_maps);
return NULL;
}
if (target_index == -1)
target_index = spdk_get_next_available_tgt_number();
if (target_index >= MAX_ISCSI_TARGET_NODE) {
SPDK_ERRLOG("%d over maximum unit number\n", target_index);
return NULL;
}
if (g_spdk_iscsi.target[target_index] != NULL) {
SPDK_ERRLOG("tgt_node%d: duplicate unit\n", target_index);
return NULL;
}
if (name == NULL) {
SPDK_ERRLOG("TargetName not found\n");
return NULL;
}
if (strncasecmp(name, "iqn.", 4) != 0
&& strncasecmp(name, "eui.", 4) != 0
&& strncasecmp(name, "naa.", 4) != 0) {
snprintf(fullname, sizeof(fullname), "%s:%s", g_spdk_iscsi.nodebase, name);
} else
snprintf(fullname, sizeof(fullname), "%s", name);
if (spdk_check_iscsi_name(fullname) != 0) {
SPDK_ERRLOG("TargetName %s contains an invalid character or format.\n",
name);
return NULL;
}
target = malloc(sizeof(*target));
if (!target) {
SPDK_ERRLOG("could not allocate target\n");
return NULL;
}
memset(target, 0, sizeof(*target));
rc = pthread_mutex_init(&target->mutex, NULL);
if (rc != 0) {
SPDK_ERRLOG("tgt_node%d: mutex_init() failed\n", target->num);
spdk_iscsi_tgt_node_destruct(target);
return NULL;
}
target->num = target_index;
target->name = strdup(fullname);
if (!target->name) {
SPDK_ERRLOG("Could not allocate TargetName\n");
spdk_iscsi_tgt_node_destruct(target);
return NULL;
}
if (alias == NULL) {
target->alias = NULL;
} else {
target->alias = strdup(alias);
if (!target->alias) {
SPDK_ERRLOG("Could not allocate TargetAlias\n");
spdk_iscsi_tgt_node_destruct(target);
return NULL;
}
}
target->dev = spdk_scsi_dev_construct(name, lun_name_list,
lun_id_list, num_luns);
if (!target->dev) {
SPDK_ERRLOG("Could not construct SCSI device\n");
spdk_iscsi_tgt_node_destruct(target);
return NULL;
}
num_unique_portal_groups = 0;
for (i = 0; i < num_maps; i++) {
map = spdk_iscsi_tgt_node_add_map(target, pg_tag_list[i],
ig_tag_list[i]);
if (map == NULL) {
SPDK_ERRLOG("could not add map to target\n");
spdk_iscsi_tgt_node_destruct(target);
return NULL;
}
for (j = 0; j < num_unique_portal_groups; j++) {
if (unique_portal_groups[j] == map->pg) {
break;
}
}
if (j == SPDK_SCSI_DEV_MAX_PORTS) {
SPDK_ERRLOG("too many unique portal groups\n");
spdk_iscsi_tgt_node_destruct(target);
return NULL;
}
if (j == num_unique_portal_groups) {
pg = map->pg;
snprintf(port_name, sizeof(port_name), "%s,t,0x%4.4x",
name, pg->tag);
spdk_scsi_dev_add_port(target->dev, pg->tag, port_name);
unique_portal_groups[j] = pg;
num_unique_portal_groups++;
}
}
target->auth_chap_disabled = auth_chap_disabled;
target->auth_chap_required = auth_chap_required;
target->auth_chap_mutual = auth_chap_mutual;
target->auth_group = auth_group;
target->header_digest = header_digest;
target->data_digest = data_digest;
if (queue_depth > SPDK_ISCSI_MAX_QUEUE_DEPTH) {
SPDK_TRACELOG(SPDK_TRACE_ISCSI, "QueueDepth %d > Max %d. Using %d instead.\n",
queue_depth, SPDK_ISCSI_MAX_QUEUE_DEPTH,
SPDK_ISCSI_MAX_QUEUE_DEPTH);
queue_depth = SPDK_ISCSI_MAX_QUEUE_DEPTH;
}
target->queue_depth = queue_depth;
pthread_mutex_lock(&g_spdk_iscsi.mutex);
g_spdk_iscsi.ntargets++;
g_spdk_iscsi.target[target->num] = target;
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
return target;
}
static int
spdk_cf_add_iscsi_tgt_node(struct spdk_conf_section *sp)
{
char buf[MAX_TMPBUF];
struct spdk_iscsi_tgt_node *target;
int pg_tag_list[MAX_TARGET_MAP], ig_tag_list[MAX_TARGET_MAP];
int num_target_maps;
const char *alias, *pg_tag, *ig_tag;
const char *ag_tag;
const char *val, *name;
int target_num, auth_group, pg_tag_i, ig_tag_i;
int header_digest, data_digest;
int auth_chap_disabled, auth_chap_required, auth_chap_mutual;
int i;
int lun_id_list[SPDK_SCSI_DEV_MAX_LUN];
char lun_name_array[SPDK_SCSI_DEV_MAX_LUN][SPDK_SCSI_LUN_MAX_NAME_LENGTH] = {};
char *lun_name_list[SPDK_SCSI_DEV_MAX_LUN];
int num_luns, queue_depth;
target_num = spdk_conf_section_get_num(sp);
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "add unit %d\n", target_num);
data_digest = 0;
header_digest = 0;
name = spdk_conf_section_get_val(sp, "TargetName");
if (name == NULL) {
SPDK_ERRLOG("tgt_node%d: TargetName not found\n", target_num);
return -1;
}
alias = spdk_conf_section_get_val(sp, "TargetAlias");
/* Setup initiator and portal group mapping */
val = spdk_conf_section_get_val(sp, "Mapping");
if (val == NULL) {
/* no map */
SPDK_ERRLOG("tgt_node%d: no Mapping\n", target_num);
return -1;
}
for (i = 0; i < MAX_TARGET_MAP; i++) {
val = spdk_conf_section_get_nmval(sp, "Mapping", i, 0);
if (val == NULL)
break;
pg_tag = spdk_conf_section_get_nmval(sp, "Mapping", i, 0);
ig_tag = spdk_conf_section_get_nmval(sp, "Mapping", i, 1);
if (pg_tag == NULL || ig_tag == NULL) {
SPDK_ERRLOG("tgt_node%d: mapping error\n", target_num);
return -1;
}
if (strncasecmp(pg_tag, "PortalGroup",
strlen("PortalGroup")) != 0
|| sscanf(pg_tag, "%*[^0-9]%d", &pg_tag_i) != 1) {
SPDK_ERRLOG("tgt_node%d: mapping portal error\n", target_num);
return -1;
}
if (strncasecmp(ig_tag, "InitiatorGroup",
strlen("InitiatorGroup")) != 0
|| sscanf(ig_tag, "%*[^0-9]%d", &ig_tag_i) != 1) {
SPDK_ERRLOG("tgt_node%d: mapping initiator error\n", target_num);
return -1;
}
if (pg_tag_i < 1 || ig_tag_i < 1) {
SPDK_ERRLOG("tgt_node%d: invalid group tag\n", target_num);
return -1;
}
pg_tag_list[i] = pg_tag_i;
ig_tag_list[i] = ig_tag_i;
}
num_target_maps = i;
/* Setup AuthMethod */
val = spdk_conf_section_get_val(sp, "AuthMethod");
auth_chap_disabled = 0;
auth_chap_required = 0;
auth_chap_mutual = 0;
if (val != NULL) {
for (i = 0; ; i++) {
val = spdk_conf_section_get_nmval(sp, "AuthMethod", 0, i);
if (val == NULL)
break;
if (strcasecmp(val, "CHAP") == 0) {
auth_chap_required = 1;
} else if (strcasecmp(val, "Mutual") == 0) {
auth_chap_mutual = 1;
} else if (strcasecmp(val, "Auto") == 0) {
auth_chap_disabled = 0;
auth_chap_required = 0;
auth_chap_mutual = 0;
} else if (strcasecmp(val, "None") == 0) {
auth_chap_disabled = 1;
auth_chap_required = 0;
auth_chap_mutual = 0;
} else {
SPDK_ERRLOG("tgt_node%d: unknown auth\n", target_num);
return -1;
}
}
if (auth_chap_mutual && !auth_chap_required) {
SPDK_ERRLOG("tgt_node%d: Mutual but not CHAP\n", target_num);
return -1;
}
}
if (auth_chap_disabled == 1) {
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "AuthMethod None\n");
} else if (auth_chap_required == 0) {
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "AuthMethod Auto\n");
} else {
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "AuthMethod CHAP %s\n",
auth_chap_mutual ? "Mutual" : "");
}
val = spdk_conf_section_get_val(sp, "AuthGroup");
if (val == NULL) {
auth_group = 0;
} else {
ag_tag = val;
if (strcasecmp(ag_tag, "None") == 0) {
auth_group = 0;
} else {
if (strncasecmp(ag_tag, "AuthGroup",
strlen("AuthGroup")) != 0
|| sscanf(ag_tag, "%*[^0-9]%d", &auth_group) != 1) {
SPDK_ERRLOG("tgt_node%d: auth group error\n", target_num);
return -1;
}
if (auth_group == 0) {
SPDK_ERRLOG("tgt_node%d: invalid auth group 0\n", target_num);
return -1;
}
}
}
if (auth_group == 0) {
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "AuthGroup None\n");
} else {
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "AuthGroup AuthGroup%d\n",
auth_group);
}
val = spdk_conf_section_get_val(sp, "UseDigest");
if (val != NULL) {
for (i = 0; ; i++) {
val = spdk_conf_section_get_nmval(sp, "UseDigest", 0, i);
if (val == NULL)
break;
if (strcasecmp(val, "Header") == 0) {
header_digest = 1;
} else if (strcasecmp(val, "Data") == 0) {
data_digest = 1;
} else if (strcasecmp(val, "Auto") == 0) {
header_digest = 0;
data_digest = 0;
} else {
SPDK_ERRLOG("tgt_node%d: unknown digest\n", target_num);
return -1;
}
}
}
if (header_digest == 0 && data_digest == 0) {
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "UseDigest Auto\n");
} else {
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "UseDigest %s %s\n",
header_digest ? "Header" : "",
data_digest ? "Data" : "");
}
val = spdk_conf_section_get_val(sp, "QueueDepth");
if (val == NULL) {
queue_depth = SPDK_ISCSI_MAX_QUEUE_DEPTH;
} else {
queue_depth = (int) strtol(val, NULL, 10);
}
num_luns = 0;
for (i = 0; i < SPDK_SCSI_DEV_MAX_LUN; i++) {
snprintf(buf, sizeof(buf), "LUN%d", i);
val = spdk_conf_section_get_val(sp, buf);
if (val == NULL) {
continue;
}
snprintf(lun_name_array[num_luns], SPDK_SCSI_LUN_MAX_NAME_LENGTH, "%s", val);
lun_name_list[num_luns] = lun_name_array[num_luns];
lun_id_list[num_luns] = i;
num_luns++;
}
if (num_luns == 0) {
SPDK_ERRLOG("tgt_node%d: No LUN specified for target %s.\n", target_num, name);
return -1;
}
target = spdk_iscsi_tgt_node_construct(target_num, name, alias,
pg_tag_list, ig_tag_list, num_target_maps,
lun_name_list, lun_id_list, num_luns, queue_depth,
auth_chap_disabled, auth_chap_required,
auth_chap_mutual, auth_group,
header_digest, data_digest);
if (target == NULL) {
SPDK_ERRLOG("tgt_node%d: add_iscsi_target_node error\n", target_num);
return -1;
}
spdk_scsi_dev_print(target->dev);
return 0;
}
int spdk_iscsi_init_tgt_nodes(void)
{
struct spdk_conf_section *sp;
int rc;
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "spdk_iscsi_init_tgt_nodes\n");
sp = spdk_conf_first_section(NULL);
while (sp != NULL) {
if (spdk_conf_section_match_prefix(sp, "TargetNode")) {
int tag = spdk_conf_section_get_num(sp);
if (tag > SPDK_TN_TAG_MAX) {
SPDK_ERRLOG("tag %d is invalid\n", tag);
return -1;
}
rc = spdk_cf_add_iscsi_tgt_node(sp);
if (rc < 0) {
SPDK_ERRLOG("spdk_cf_add_iscsi_tgt_node() failed\n");
return -1;
}
}
sp = spdk_conf_next_section(sp);
}
return 0;
}
int
spdk_iscsi_shutdown_tgt_nodes(void)
{
struct spdk_iscsi_tgt_node *target;
int i;
pthread_mutex_lock(&g_spdk_iscsi.mutex);
for (i = 0; i < MAX_ISCSI_TARGET_NODE; i++) {
target = g_spdk_iscsi.target[i];
if (target == NULL)
continue;
spdk_iscsi_tgt_node_destruct(target);
g_spdk_iscsi.ntargets--;
g_spdk_iscsi.target[i] = NULL;
}
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
return 0;
}
int
spdk_iscsi_shutdown_tgt_node_by_name(const char *target_name)
{
struct spdk_iscsi_tgt_node *target;
int i = 0;
int ret = -1;
pthread_mutex_lock(&g_spdk_iscsi.mutex);
for (i = 0; i < MAX_ISCSI_TARGET_NODE; i++) {
target = g_spdk_iscsi.target[i];
if (target == NULL)
continue;
if (strncmp(target_name, target->name, MAX_TMPBUF) == 0) {
spdk_iscsi_tgt_node_destruct(target);
g_spdk_iscsi.ntargets--;
g_spdk_iscsi.target[i] = NULL;
ret = 0;
break;
}
}
pthread_mutex_unlock(&g_spdk_iscsi.mutex);
return ret;
}
int
spdk_iscsi_tgt_node_cleanup_luns(struct spdk_iscsi_conn *conn,
struct spdk_iscsi_tgt_node *target)
{
int i;
struct spdk_iscsi_task *task;
for (i = 0; i < target->dev->maxlun; i++) {
if (!target->dev->lun[i])
continue;
/* we create a fake management task per LUN to cleanup */
task = spdk_iscsi_task_get(&conn->pending_task_cnt, NULL);
if (!task) {
SPDK_ERRLOG("Unable to acquire task\n");
return -1;
}
task->scsi.type = SPDK_SCSI_TASK_TYPE_MANAGE;
task->scsi.target_port = conn->target_port;
task->scsi.initiator_port = conn->initiator_port;
task->scsi.lun = target->dev->lun[i];
task->scsi.function = SPDK_SCSI_TASK_FUNC_LUN_RESET;
task->scsi.cb_event = spdk_event_allocate(spdk_app_get_current_core(),
process_task_mgmt_completion, conn, task);
spdk_scsi_dev_queue_mgmt_task(target->dev, &task->scsi);
}
return 0;
}
void spdk_iscsi_tgt_node_delete_map(struct spdk_iscsi_portal_grp *portal_group,
struct spdk_iscsi_init_grp *initiator_group)
{
struct spdk_iscsi_tgt_node *target;
int i = 0;
int j = 0;
int k = 0;
int flag = 0;
for (i = 0; i < MAX_ISCSI_TARGET_NODE; i++) {
target = g_spdk_iscsi.target[i];
if (target == NULL)
continue;
loop:
flag = 0;
for (j = 0; j < target->maxmap; j++) {
if (portal_group) {
if (target->map[j].pg->tag == portal_group->tag) {
flag = 1;
}
}
if (initiator_group) {
if (target->map[j].ig->tag == initiator_group->tag) {
flag = 1;
}
}
if (flag == 1) {
target->map[j].pg->ref--;
target->map[j].ig->ref--;
for (k = j; k < target->maxmap - 1; k++) {
target->map[k].pg = target->map[k + 1].pg;
target->map[k].ig = target->map[k + 1].ig;
}
target->map[target->maxmap - 1].pg = NULL;
target->map[target->maxmap - 1].ig = NULL;
target->maxmap -= 1;
goto loop;
}
}
}
}
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