From 36c7845282eef0104ba6ecc6761ba1dce57b2b87 Mon Sep 17 00:00:00 2001 From: Quinn Tran Date: Thu, 4 Feb 2016 11:45:18 -0500 Subject: [PATCH] qla2xxx: Add DebugFS node for target sess list. #cat /sys/kernel/debug/qla2xxx/qla2xxx_31/tgt_sess qla2xxx_31 Port ID Port Name Handle ff:fc:01 21:fd:00:05:33:c7:ec:16 0 01:0e:00 21:00:00:24:ff:7b:8a:e4 1 01:0f:00 21:00:00:24:ff:7b:8a:e5 2 .... (Drop ->check_initiator_node_acl() parameter usage - nab) Signed-off-by: Quinn Tran Signed-off-by: Himanshu Madhani Signed-off-by: Nicholas Bellinger --- drivers/scsi/qla2xxx/qla_def.h | 1 + drivers/scsi/qla2xxx/qla_dfs.c | 55 +++++++++++++++++++++++++++++++ drivers/scsi/qla2xxx/qla_target.c | 53 ++++++++++++++++++----------- 3 files changed, 89 insertions(+), 20 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 9872f3429e53..e6c5bcf24162 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2929,6 +2929,7 @@ struct qlt_hw_data { uint8_t tgt_node_name[WWN_SIZE]; + struct dentry *dfs_tgt_sess; struct list_head q_full_list; uint32_t num_pend_cmds; uint32_t num_qfull_cmds_alloc; diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c index cd8b96a4b0dd..34272fde8a5b 100644 --- a/drivers/scsi/qla2xxx/qla_dfs.c +++ b/drivers/scsi/qla2xxx/qla_dfs.c @@ -12,6 +12,47 @@ static struct dentry *qla2x00_dfs_root; static atomic_t qla2x00_dfs_root_count; +static int +qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused) +{ + scsi_qla_host_t *vha = s->private; + struct qla_hw_data *ha = vha->hw; + unsigned long flags; + struct qla_tgt_sess *sess = NULL; + struct qla_tgt *tgt= vha->vha_tgt.qla_tgt; + + seq_printf(s, "%s\n",vha->host_str); + if (tgt) { + seq_printf(s, "Port ID Port Name Handle\n"); + + spin_lock_irqsave(&ha->tgt.sess_lock, flags); + list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) { + seq_printf(s, "%02x:%02x:%02x %8phC %d\n", + sess->s_id.b.domain,sess->s_id.b.area, + sess->s_id.b.al_pa, sess->port_name, + sess->loop_id); + } + spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); + } + + return 0; +} + +static int +qla2x00_dfs_tgt_sess_open(struct inode *inode, struct file *file) +{ + scsi_qla_host_t *vha = inode->i_private; + return single_open(file, qla2x00_dfs_tgt_sess_show, vha); +} + + +static const struct file_operations dfs_tgt_sess_ops = { + .open = qla2x00_dfs_tgt_sess_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + static int qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused) { @@ -248,6 +289,15 @@ create_nodes: "Unable to create debugfs fce node.\n"); goto out; } + + ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess", + S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops); + if (!ha->tgt.dfs_tgt_sess) { + ql_log(ql_log_warn, vha, 0xffff, + "Unable to create debugFS tgt_sess node.\n"); + goto out; + } + out: return 0; } @@ -257,6 +307,11 @@ qla2x00_dfs_remove(scsi_qla_host_t *vha) { struct qla_hw_data *ha = vha->hw; + if (ha->tgt.dfs_tgt_sess) { + debugfs_remove(ha->tgt.dfs_tgt_sess); + ha->tgt.dfs_tgt_sess = NULL; + } + if (ha->dfs_fw_resource_cnt) { debugfs_remove(ha->dfs_fw_resource_cnt); ha->dfs_fw_resource_cnt = NULL; diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 98d313668644..985231900aca 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -641,7 +641,8 @@ void qlt_unreg_sess(struct qla_tgt_sess *sess) { struct scsi_qla_host *vha = sess->vha; - vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); + if (sess->se_sess) + vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); if (!list_empty(&sess->del_list_entry)) list_del_init(&sess->del_list_entry); @@ -856,8 +857,12 @@ static void qlt_del_sess_work_fn(struct delayed_work *work) ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, "Timeout: sess %p about to be deleted\n", sess); - ha->tgt.tgt_ops->shutdown_sess(sess); - ha->tgt.tgt_ops->put_sess(sess); + if (sess->se_sess) { + ha->tgt.tgt_ops->shutdown_sess(sess); + ha->tgt.tgt_ops->put_sess(sess); + } else { + qlt_unreg_sess(sess); + } } else { schedule_delayed_work(&tgt->sess_del_work, sess->expires - elapsed); @@ -904,6 +909,14 @@ static struct qla_tgt_sess *qlt_create_sess( if (sess->deleted) qlt_undelete_sess(sess); + if (!sess->se_sess) { + if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, + &sess->port_name[0], sess) < 0) { + spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); + return NULL; + } + } + kref_get(&sess->se_sess->sess_kref); ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id, (fcport->flags & FCF_CONF_COMP_SUPPORTED)); @@ -947,23 +960,6 @@ static struct qla_tgt_sess *qlt_create_sess( "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n", sess, vha->vha_tgt.qla_tgt); - /* - * Determine if this fc_port->port_name is allowed to access - * target mode using explict NodeACLs+MappedLUNs, or using - * TPG demo mode. If this is successful a target mode FC nexus - * is created. - */ - if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, &fcport->port_name[0], - sess)) { - kfree(sess); - return NULL; - } - /* - * Take an extra reference to ->sess_kref here to handle qla_tgt_sess - * access across ->tgt.sess_lock reaquire. - */ - kref_get(&sess->se_sess->sess_kref); - sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED); BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name)); memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name)); @@ -981,6 +977,23 @@ static struct qla_tgt_sess *qlt_create_sess( fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); + /* + * Determine if this fc_port->port_name is allowed to access + * target mode using explict NodeACLs+MappedLUNs, or using + * TPG demo mode. If this is successful a target mode FC nexus + * is created. + */ + if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, + &fcport->port_name[0], sess) < 0) { + return NULL; + } else { + /* + * Take an extra reference to ->sess_kref here to handle qla_tgt_sess + * access across ->tgt.sess_lock reaquire. + */ + kref_get(&sess->se_sess->sess_kref); + } + return sess; }