Skip to content

Commit

Permalink
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/…
Browse files Browse the repository at this point in the history 
…git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:
 "The highlights include:

   - numerous target-core-user improvements related to queue full and
     timeout handling. (MNC)

   - prevent target-core-user corruption when invalid data page is
     requested. (MNC)

   - add target-core device action configfs attributes to allow
     user-space to trigger events separate from existing attributes
     exposed to end-users. (MNC)

   - fix iscsi-target NULL pointer dereference 4.6+ regression in CHAP
     error path. (David Disseldorp)

   - avoid target-core backend UNMAP callbacks if range is zero. (Andrei
     Vagin)

   - fix a iscsi-target 4.14+ regression related multiple PDU logins,
     that was exposed due to removal of TCP prequeue support. (Florian
     Westphal + MNC)

  Also, there is a iser-target bug still being worked on for post -rc1
  code to address a long standing issue resulting in persistent
  ib_post_send() failures, for RNICs with small max_send_sge"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (36 commits)
  iscsi-target: make sure to wake up sleeping login worker
  tcmu: Fix trailing semicolon
  tcmu: fix cmd user after free
  target: fix destroy device in target_configure_device
  tcmu: allow userspace to reset ring
  target core: add device action configfs files
  tcmu: fix error return code in tcmu_configure_device()
  target_core_user: add cmd id to broken ring message
  target: add SAM_STAT_BUSY sense reason
  tcmu: prevent corruption when invalid data page requested
  target: don't call an unmap callback if a range length is zero
  target/iscsi: avoid NULL dereference in CHAP auth error path
  cxgbit: call neigh_event_send() to update MAC address
  target: tcm_loop: Use seq_puts() in tcm_loop_show_info()
  target: tcm_loop: Delete an unnecessary return statement in tcm_loop_submission_work()
  target: tcm_loop: Delete two unnecessary variable initialisations in tcm_loop_issue_tmr()
  target: tcm_loop: Combine substrings for 26 messages
  target: tcm_loop: Improve a size determination in two functions
  target: tcm_loop: Delete an error message for a failed memory allocation in four functions
  sbp-target: Delete an error message for a failed memory allocation in three functions
  ...
  • Loading branch information
@torvalds
torvalds committed Feb 9, 2018
2 parents 8158c2f + 1c130ae commit 858f45b
Show file tree
Hide file tree
Showing 15 changed files with 798 additions and 389 deletions.
3 changes: 3 additions & 0 deletions drivers/target/iscsi/cxgbit/cxgbit_cm.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -893,6 +893,9 @@ cxgbit_offload_init(struct cxgbit_sock *csk, int iptype, __u8 *peer_ip,
return -ENODEV;

rcu_read_lock();
if (!(n->nud_state & NUD_VALID))
neigh_event_send(n, NULL);

ret = -ENOMEM;
if (n->dev->flags & IFF_LOOPBACK) {
if (iptype == 4)
Expand Down
3 changes: 2 additions & 1 deletion drivers/target/iscsi/iscsi_target_auth.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -421,7 +421,8 @@ static int chap_server_compute_md5(
auth_ret = 0;
out:
kzfree(desc);
crypto_free_shash(tfm);
if (tfm)
crypto_free_shash(tfm);
kfree(challenge);
kfree(challenge_binhex);
return auth_ret;
Expand Down
3 changes: 3 additions & 0 deletions drivers/target/iscsi/iscsi_target_nego.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -432,6 +432,9 @@ static void iscsi_target_sk_data_ready(struct sock *sk)
if (test_and_set_bit(LOGIN_FLAGS_READ_ACTIVE, &conn->login_flags)) {
write_unlock_bh(&sk->sk_callback_lock);
pr_debug("Got LOGIN_FLAGS_READ_ACTIVE=1, conn: %p >>>>\n", conn);
if (iscsi_target_sk_data_ready == conn->orig_data_ready)
return;
conn->orig_data_ready(sk);
return;
}

Expand Down
145 changes: 61 additions & 84 deletions drivers/target/loopback/tcm_loop.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,7 @@ static void tcm_loop_release_cmd(struct se_cmd *se_cmd)

static int tcm_loop_show_info(struct seq_file *m, struct Scsi_Host *host)
{
seq_printf(m, "tcm_loop_proc_info()\n");
seq_puts(m, "tcm_loop_proc_info()\n");
return 0;
}

Expand Down Expand Up @@ -123,8 +123,8 @@ static void tcm_loop_submission_work(struct work_struct *work)
}
tl_nexus = tl_tpg->tl_nexus;
if (!tl_nexus) {
scmd_printk(KERN_ERR, sc, "TCM_Loop I_T Nexus"
" does not exist\n");
scmd_printk(KERN_ERR, sc,
"TCM_Loop I_T Nexus does not exist\n");
set_host_byte(sc, DID_ERROR);
goto out_done;
}
Expand Down Expand Up @@ -166,7 +166,6 @@ static void tcm_loop_submission_work(struct work_struct *work)
out_done:
kmem_cache_free(tcm_loop_cmd_cache, tl_cmd);
sc->scsi_done(sc);
return;
}

/*
Expand All @@ -177,14 +176,13 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc)
{
struct tcm_loop_cmd *tl_cmd;

pr_debug("tcm_loop_queuecommand() %d:%d:%d:%llu got CDB: 0x%02x"
" scsi_buf_len: %u\n", sc->device->host->host_no,
sc->device->id, sc->device->channel, sc->device->lun,
sc->cmnd[0], scsi_bufflen(sc));
pr_debug("%s() %d:%d:%d:%llu got CDB: 0x%02x scsi_buf_len: %u\n",
__func__, sc->device->host->host_no, sc->device->id,
sc->device->channel, sc->device->lun, sc->cmnd[0],
scsi_bufflen(sc));

tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_ATOMIC);
if (!tl_cmd) {
pr_err("Unable to allocate struct tcm_loop_cmd\n");
set_host_byte(sc, DID_ERROR);
sc->scsi_done(sc);
return 0;
Expand All @@ -204,27 +202,24 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc)
static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
u64 lun, int task, enum tcm_tmreq_table tmr)
{
struct se_cmd *se_cmd = NULL;
struct se_cmd *se_cmd;
struct se_session *se_sess;
struct tcm_loop_nexus *tl_nexus;
struct tcm_loop_cmd *tl_cmd = NULL;
struct tcm_loop_cmd *tl_cmd;
int ret = TMR_FUNCTION_FAILED, rc;

/*
* Locate the tl_nexus and se_sess pointers
*/
tl_nexus = tl_tpg->tl_nexus;
if (!tl_nexus) {
pr_err("Unable to perform device reset without"
" active I_T Nexus\n");
pr_err("Unable to perform device reset without active I_T Nexus\n");
return ret;
}

tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_KERNEL);
if (!tl_cmd) {
pr_err("Unable to allocate memory for tl_cmd\n");
if (!tl_cmd)
return ret;
}

init_completion(&tl_cmd->tmr_done);

Expand Down Expand Up @@ -298,8 +293,7 @@ static int tcm_loop_target_reset(struct scsi_cmnd *sc)
*/
tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
if (!tl_hba) {
pr_err("Unable to perform device reset without"
" active I_T Nexus\n");
pr_err("Unable to perform device reset without active I_T Nexus\n");
return FAILED;
}
/*
Expand Down Expand Up @@ -417,8 +411,7 @@ static int tcm_loop_setup_hba_bus(struct tcm_loop_hba *tl_hba, int tcm_loop_host

ret = device_register(&tl_hba->dev);
if (ret) {
pr_err("device_register() failed for"
" tl_hba->dev: %d\n", ret);
pr_err("device_register() failed for tl_hba->dev: %d\n", ret);
return -ENODEV;
}

Expand Down Expand Up @@ -447,8 +440,7 @@ static int tcm_loop_alloc_core_bus(void)

ret = driver_register(&tcm_loop_driverfs);
if (ret) {
pr_err("driver_register() failed for"
"tcm_loop_driverfs\n");
pr_err("driver_register() failed for tcm_loop_driverfs\n");
goto bus_unreg;
}

Expand Down Expand Up @@ -587,8 +579,8 @@ static int tcm_loop_queue_data_in(struct se_cmd *se_cmd)
struct tcm_loop_cmd, tl_se_cmd);
struct scsi_cmnd *sc = tl_cmd->sc;

pr_debug("tcm_loop_queue_data_in() called for scsi_cmnd: %p"
" cdb: 0x%02x\n", sc, sc->cmnd[0]);
pr_debug("%s() called for scsi_cmnd: %p cdb: 0x%02x\n",
__func__, sc, sc->cmnd[0]);

sc->result = SAM_STAT_GOOD;
set_host_byte(sc, DID_OK);
Expand All @@ -605,8 +597,8 @@ static int tcm_loop_queue_status(struct se_cmd *se_cmd)
struct tcm_loop_cmd, tl_se_cmd);
struct scsi_cmnd *sc = tl_cmd->sc;

pr_debug("tcm_loop_queue_status() called for scsi_cmnd: %p"
" cdb: 0x%02x\n", sc, sc->cmnd[0]);
pr_debug("%s() called for scsi_cmnd: %p cdb: 0x%02x\n",
__func__, sc, sc->cmnd[0]);

if (se_cmd->sense_buffer &&
((se_cmd->se_cmd_flags & SCF_TRANSPORT_TASK_SENSE) ||
Expand Down Expand Up @@ -691,8 +683,8 @@ static void tcm_loop_port_unlink(
sd = scsi_device_lookup(tl_hba->sh, 0, tl_tpg->tl_tpgt,
se_lun->unpacked_lun);
if (!sd) {
pr_err("Unable to locate struct scsi_device for %d:%d:"
"%llu\n", 0, tl_tpg->tl_tpgt, se_lun->unpacked_lun);
pr_err("Unable to locate struct scsi_device for %d:%d:%llu\n",
0, tl_tpg->tl_tpgt, se_lun->unpacked_lun);
return;
}
/*
Expand Down Expand Up @@ -772,11 +764,9 @@ static int tcm_loop_make_nexus(
return -EEXIST;
}

tl_nexus = kzalloc(sizeof(struct tcm_loop_nexus), GFP_KERNEL);
if (!tl_nexus) {
pr_err("Unable to allocate struct tcm_loop_nexus\n");
tl_nexus = kzalloc(sizeof(*tl_nexus), GFP_KERNEL);
if (!tl_nexus)
return -ENOMEM;
}

tl_nexus->se_sess = target_alloc_session(&tl_tpg->tl_se_tpg, 0, 0,
TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS,
Expand All @@ -787,9 +777,8 @@ static int tcm_loop_make_nexus(
return ret;
}

pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated"
" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba),
name);
pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated %s Initiator Port: %s\n",
tcm_loop_dump_proto_id(tl_hba), name);
return 0;
}

Expand All @@ -808,15 +797,14 @@ static int tcm_loop_drop_nexus(
return -ENODEV;

if (atomic_read(&tpg->tl_tpg_port_count)) {
pr_err("Unable to remove TCM_Loop I_T Nexus with"
" active TPG port count: %d\n",
atomic_read(&tpg->tl_tpg_port_count));
pr_err("Unable to remove TCM_Loop I_T Nexus with active TPG port count: %d\n",
atomic_read(&tpg->tl_tpg_port_count));
return -EPERM;
}

pr_debug("TCM_Loop_ConfigFS: Removing I_T Nexus to emulated"
" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tpg->tl_hba),
tl_nexus->se_sess->se_node_acl->initiatorname);
pr_debug("TCM_Loop_ConfigFS: Removing I_T Nexus to emulated %s Initiator Port: %s\n",
tcm_loop_dump_proto_id(tpg->tl_hba),
tl_nexus->se_sess->se_node_acl->initiatorname);
/*
* Release the SCSI I_T Nexus to the emulated Target Port
*/
Expand Down Expand Up @@ -868,18 +856,17 @@ static ssize_t tcm_loop_tpg_nexus_store(struct config_item *item,
* tcm_loop_make_nexus()
*/
if (strlen(page) >= TL_WWN_ADDR_LEN) {
pr_err("Emulated NAA Sas Address: %s, exceeds"
" max: %d\n", page, TL_WWN_ADDR_LEN);
pr_err("Emulated NAA Sas Address: %s, exceeds max: %d\n",
page, TL_WWN_ADDR_LEN);
return -EINVAL;
}
snprintf(&i_port[0], TL_WWN_ADDR_LEN, "%s", page);

ptr = strstr(i_port, "naa.");
if (ptr) {
if (tl_hba->tl_proto_id != SCSI_PROTOCOL_SAS) {
pr_err("Passed SAS Initiator Port %s does not"
" match target port protoid: %s\n", i_port,
tcm_loop_dump_proto_id(tl_hba));
pr_err("Passed SAS Initiator Port %s does not match target port protoid: %s\n",
i_port, tcm_loop_dump_proto_id(tl_hba));
return -EINVAL;
}
port_ptr = &i_port[0];
Expand All @@ -888,9 +875,8 @@ static ssize_t tcm_loop_tpg_nexus_store(struct config_item *item,
ptr = strstr(i_port, "fc.");
if (ptr) {
if (tl_hba->tl_proto_id != SCSI_PROTOCOL_FCP) {
pr_err("Passed FCP Initiator Port %s does not"
" match target port protoid: %s\n", i_port,
tcm_loop_dump_proto_id(tl_hba));
pr_err("Passed FCP Initiator Port %s does not match target port protoid: %s\n",
i_port, tcm_loop_dump_proto_id(tl_hba));
return -EINVAL;
}
port_ptr = &i_port[3]; /* Skip over "fc." */
Expand All @@ -899,16 +885,15 @@ static ssize_t tcm_loop_tpg_nexus_store(struct config_item *item,
ptr = strstr(i_port, "iqn.");
if (ptr) {
if (tl_hba->tl_proto_id != SCSI_PROTOCOL_ISCSI) {
pr_err("Passed iSCSI Initiator Port %s does not"
" match target port protoid: %s\n", i_port,
tcm_loop_dump_proto_id(tl_hba));
pr_err("Passed iSCSI Initiator Port %s does not match target port protoid: %s\n",
i_port, tcm_loop_dump_proto_id(tl_hba));
return -EINVAL;
}
port_ptr = &i_port[0];
goto check_newline;
}
pr_err("Unable to locate prefix for emulated Initiator Port:"
" %s\n", i_port);
pr_err("Unable to locate prefix for emulated Initiator Port: %s\n",
i_port);
return -EINVAL;
/*
* Clear any trailing newline for the NAA WWN
Expand Down Expand Up @@ -1010,16 +995,15 @@ static struct se_portal_group *tcm_loop_make_naa_tpg(
unsigned long tpgt;

if (strstr(name, "tpgt_") != name) {
pr_err("Unable to locate \"tpgt_#\" directory"
" group\n");
pr_err("Unable to locate \"tpgt_#\" directory group\n");
return ERR_PTR(-EINVAL);
}
if (kstrtoul(name+5, 10, &tpgt))
return ERR_PTR(-EINVAL);

if (tpgt >= TL_TPGS_PER_HBA) {
pr_err("Passed tpgt: %lu exceeds TL_TPGS_PER_HBA:"
" %u\n", tpgt, TL_TPGS_PER_HBA);
pr_err("Passed tpgt: %lu exceeds TL_TPGS_PER_HBA: %u\n",
tpgt, TL_TPGS_PER_HBA);
return ERR_PTR(-EINVAL);
}
tl_tpg = &tl_hba->tl_hba_tpgs[tpgt];
Expand All @@ -1032,10 +1016,9 @@ static struct se_portal_group *tcm_loop_make_naa_tpg(
if (ret < 0)
return ERR_PTR(-ENOMEM);

pr_debug("TCM_Loop_ConfigFS: Allocated Emulated %s"
" Target Port %s,t,0x%04lx\n", tcm_loop_dump_proto_id(tl_hba),
config_item_name(&wwn->wwn_group.cg_item), tpgt);

pr_debug("TCM_Loop_ConfigFS: Allocated Emulated %s Target Port %s,t,0x%04lx\n",
tcm_loop_dump_proto_id(tl_hba),
config_item_name(&wwn->wwn_group.cg_item), tpgt);
return &tl_tpg->tl_se_tpg;
}

Expand All @@ -1062,9 +1045,9 @@ static void tcm_loop_drop_naa_tpg(
tl_tpg->tl_hba = NULL;
tl_tpg->tl_tpgt = 0;

pr_debug("TCM_Loop_ConfigFS: Deallocated Emulated %s"
" Target Port %s,t,0x%04x\n", tcm_loop_dump_proto_id(tl_hba),
config_item_name(&wwn->wwn_group.cg_item), tpgt);
pr_debug("TCM_Loop_ConfigFS: Deallocated Emulated %s Target Port %s,t,0x%04x\n",
tcm_loop_dump_proto_id(tl_hba),
config_item_name(&wwn->wwn_group.cg_item), tpgt);
}

/* End items for tcm_loop_naa_cit */
Expand All @@ -1081,11 +1064,10 @@ static struct se_wwn *tcm_loop_make_scsi_hba(
char *ptr;
int ret, off = 0;

tl_hba = kzalloc(sizeof(struct tcm_loop_hba), GFP_KERNEL);
if (!tl_hba) {
pr_err("Unable to allocate struct tcm_loop_hba\n");
tl_hba = kzalloc(sizeof(*tl_hba), GFP_KERNEL);
if (!tl_hba)
return ERR_PTR(-ENOMEM);
}

/*
* Determine the emulated Protocol Identifier and Target Port Name
* based on the incoming configfs directory name.
Expand All @@ -1103,18 +1085,17 @@ static struct se_wwn *tcm_loop_make_scsi_hba(
}
ptr = strstr(name, "iqn.");
if (!ptr) {
pr_err("Unable to locate prefix for emulated Target "
"Port: %s\n", name);
pr_err("Unable to locate prefix for emulated Target Port: %s\n",
name);
ret = -EINVAL;
goto out;
}
tl_hba->tl_proto_id = SCSI_PROTOCOL_ISCSI;

check_len:
if (strlen(name) >= TL_WWN_ADDR_LEN) {
pr_err("Emulated NAA %s Address: %s, exceeds"
" max: %d\n", name, tcm_loop_dump_proto_id(tl_hba),
TL_WWN_ADDR_LEN);
pr_err("Emulated NAA %s Address: %s, exceeds max: %d\n",
name, tcm_loop_dump_proto_id(tl_hba), TL_WWN_ADDR_LEN);
ret = -EINVAL;
goto out;
}
Expand All @@ -1131,10 +1112,8 @@ static struct se_wwn *tcm_loop_make_scsi_hba(

sh = tl_hba->sh;
tcm_loop_hba_no_cnt++;
pr_debug("TCM_Loop_ConfigFS: Allocated emulated Target"
" %s Address: %s at Linux/SCSI Host ID: %d\n",
tcm_loop_dump_proto_id(tl_hba), name, sh->host_no);

pr_debug("TCM_Loop_ConfigFS: Allocated emulated Target %s Address: %s at Linux/SCSI Host ID: %d\n",
tcm_loop_dump_proto_id(tl_hba), name, sh->host_no);
return &tl_hba->tl_hba_wwn;
out:
kfree(tl_hba);
Expand All @@ -1147,10 +1126,9 @@ static void tcm_loop_drop_scsi_hba(
struct tcm_loop_hba *tl_hba = container_of(wwn,
struct tcm_loop_hba, tl_hba_wwn);

pr_debug("TCM_Loop_ConfigFS: Deallocating emulated Target"
" %s Address: %s at Linux/SCSI Host ID: %d\n",
tcm_loop_dump_proto_id(tl_hba), tl_hba->tl_wwn_address,
tl_hba->sh->host_no);
pr_debug("TCM_Loop_ConfigFS: Deallocating emulated Target %s Address: %s at Linux/SCSI Host ID: %d\n",
tcm_loop_dump_proto_id(tl_hba), tl_hba->tl_wwn_address,
tl_hba->sh->host_no);
/*
* Call device_unregister() on the original tl_hba->dev.
* tcm_loop_fabric_scsi.c:tcm_loop_release_adapter() will
Expand Down Expand Up @@ -1223,8 +1201,7 @@ static int __init tcm_loop_fabric_init(void)
__alignof__(struct tcm_loop_cmd),
0, NULL);
if (!tcm_loop_cmd_cache) {
pr_debug("kmem_cache_create() for"
" tcm_loop_cmd_cache failed\n");
pr_debug("kmem_cache_create() for tcm_loop_cmd_cache failed\n");
goto out_destroy_workqueue;
}

Expand Down
Loading

0 comments on commit 858f45b

Please sign in to comment.