Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is actually just a small set of mainly bug fixes for the original
  merge window code plus a few trivial updates and qedi boot from SAN
  support feature patch"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: libfc: pass an error pointer to fc_disc_error()
  scsi: hisi_sas: make several const arrays static
  scsi: qla2xxx: Off by one in qlt_ctio_to_cmd()
  scsi: sg: fix SG_DXFER_FROM_DEV transfers
  scsi: virtio_scsi: always read VPD pages for multiqueue too
  scsi: qedf: fix spelling mistake: "offlading" -> "offloading"
  scsi: qedi: fix another spelling mistake: "alloction" -> "allocation"
  scsi: isci: fix typo in function names
  scsi: cxlflash: return -EFAULT if copy_from_user() fails
  scsi: qedi: Add support for Boot from SAN over iSCSI offload

12 files changed, 674 insertions, 21 deletions

diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 077f62e208aa..6a4367cc9caa 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -3401,9 +3401,10 @@ static int cxlflash_afu_debug(struct cxlflash_cfg *cfg,
 		if (is_write) {
 			req_flags |= SISL_REQ_FLAGS_HOST_WRITE;
 
-			rc = copy_from_user(kbuf, ubuf, ulen);
-			if (unlikely(rc))
+			if (copy_from_user(kbuf, ubuf, ulen)) {
+				rc = -EFAULT;
 				goto out;
+			}
 		}
 	}
 
@@ -3431,8 +3432,10 @@ static int cxlflash_afu_debug(struct cxlflash_cfg *cfg,
 		goto out;
 	}
 
-	if (ulen && !is_write)
-		rc = copy_to_user(ubuf, kbuf, ulen);
+	if (ulen && !is_write) {
+		if (copy_to_user(ubuf, kbuf, ulen))
+			rc = -EFAULT;
+	}
 out:
 	kfree(buf);
 	dev_dbg(dev, "%s: returning rc=%d\n", __func__, rc);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index 551d103c27f1..2bfea7082e3a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -1693,7 +1693,7 @@ static int prep_ssp_v2_hw(struct hisi_hba *hisi_hba,
 
 static int parse_trans_tx_err_code_v2_hw(u32 err_msk)
 {
-	const u8 trans_tx_err_code_prio[] = {
+	static const u8 trans_tx_err_code_prio[] = {
 		TRANS_TX_OPEN_FAIL_WITH_IT_NEXUS_LOSS,
 		TRANS_TX_ERR_PHY_NOT_ENABLE,
 		TRANS_TX_OPEN_CNX_ERR_WRONG_DESTINATION,
@@ -1738,7 +1738,7 @@ static int parse_trans_tx_err_code_v2_hw(u32 err_msk)
 
 static int parse_trans_rx_err_code_v2_hw(u32 err_msk)
 {
-	const u8 trans_rx_err_code_prio[] = {
+	static const u8 trans_rx_err_code_prio[] = {
 		TRANS_RX_ERR_WITH_RXFRAME_CRC_ERR,
 		TRANS_RX_ERR_WITH_RXFIS_8B10B_DISP_ERR,
 		TRANS_RX_ERR_WITH_RXFRAME_HAVE_ERRPRM,
@@ -1784,7 +1784,7 @@ static int parse_trans_rx_err_code_v2_hw(u32 err_msk)
 
 static int parse_dma_tx_err_code_v2_hw(u32 err_msk)
 {
-	const u8 dma_tx_err_code_prio[] = {
+	static const u8 dma_tx_err_code_prio[] = {
 		DMA_TX_UNEXP_XFER_ERR,
 		DMA_TX_UNEXP_RETRANS_ERR,
 		DMA_TX_XFER_LEN_OVERFLOW,
@@ -1810,7 +1810,7 @@ static int parse_dma_tx_err_code_v2_hw(u32 err_msk)
 
 static int parse_sipc_rx_err_code_v2_hw(u32 err_msk)
 {
-	const u8 sipc_rx_err_code_prio[] = {
+	static const u8 sipc_rx_err_code_prio[] = {
 		SIPC_RX_FIS_STATUS_ERR_BIT_VLD,
 		SIPC_RX_PIO_WRSETUP_STATUS_DRQ_ERR,
 		SIPC_RX_FIS_STATUS_BSY_BIT_ERR,
@@ -1836,7 +1836,7 @@ static int parse_sipc_rx_err_code_v2_hw(u32 err_msk)
 
 static int parse_dma_rx_err_code_v2_hw(u32 err_msk)
 {
-	const u8 dma_rx_err_code_prio[] = {
+	static const u8 dma_rx_err_code_prio[] = {
 		DMA_RX_UNKNOWN_FRM_ERR,
 		DMA_RX_DATA_LEN_OVERFLOW,
 		DMA_RX_DATA_LEN_UNDERFLOW,
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index 47f66e949745..ed197bc8e801 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -213,7 +213,7 @@ static void sci_task_request_build_ssp_task_iu(struct isci_request *ireq)
  * @task_context:
  *
  */
-static void scu_ssp_reqeust_construct_task_context(
+static void scu_ssp_request_construct_task_context(
 	struct isci_request *ireq,
 	struct scu_task_context *task_context)
 {
@@ -425,7 +425,7 @@ static void scu_ssp_io_request_construct_task_context(struct isci_request *ireq,
 	u8 prot_type = scsi_get_prot_type(scmd);
 	u8 prot_op = scsi_get_prot_op(scmd);
 
-	scu_ssp_reqeust_construct_task_context(ireq, task_context);
+	scu_ssp_request_construct_task_context(ireq, task_context);
 
 	task_context->ssp_command_iu_length =
 		sizeof(struct ssp_cmd_iu) / sizeof(u32);
@@ -472,7 +472,7 @@ static void scu_ssp_task_request_construct_task_context(struct isci_request *ire
 {
 	struct scu_task_context *task_context = ireq->tc;
 
-	scu_ssp_reqeust_construct_task_context(ireq, task_context);
+	scu_ssp_request_construct_task_context(ireq, task_context);
 
 	task_context->control_frame                = 1;
 	task_context->priority                     = SCU_TASK_PRIORITY_HIGH;
@@ -495,7 +495,7 @@ static void scu_ssp_task_request_construct_task_context(struct isci_request *ire
  * the command buffer is complete. none Revisit task context construction to
  * determine what is common for SSP/SMP/STP task context structures.
  */
-static void scu_sata_reqeust_construct_task_context(
+static void scu_sata_request_construct_task_context(
 	struct isci_request *ireq,
 	struct scu_task_context *task_context)
 {
@@ -562,7 +562,7 @@ static void scu_stp_raw_request_construct_task_context(struct isci_request *ireq
 {
 	struct scu_task_context *task_context = ireq->tc;
 
-	scu_sata_reqeust_construct_task_context(ireq, task_context);
+	scu_sata_request_construct_task_context(ireq, task_context);
 
 	task_context->control_frame         = 0;
 	task_context->priority              = SCU_TASK_PRIORITY_NORMAL;
@@ -613,7 +613,7 @@ static void sci_stp_optimized_request_construct(struct isci_request *ireq,
 	struct scu_task_context *task_context = ireq->tc;
 
 	/* Build the STP task context structure */
-	scu_sata_reqeust_construct_task_context(ireq, task_context);
+	scu_sata_request_construct_task_context(ireq, task_context);
 
 	/* Copy over the SGL elements */
 	sci_request_build_sgl(ireq);
@@ -1401,7 +1401,7 @@ static enum sci_status sci_stp_request_pio_data_out_transmit_data(struct isci_re
  * @data_buffer: The buffer of data to be copied.
  * @length: The length of the data transfer.
  *
- * Copy the data from the buffer for the length specified to the IO reqeust SGL
+ * Copy the data from the buffer for the length specified to the IO request SGL
  * specified data region. enum sci_status
  */
 static enum sci_status
diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c
index fd501f8dbb11..8660f923ace0 100644
--- a/drivers/scsi/libfc/fc_disc.c
+++ b/drivers/scsi/libfc/fc_disc.c
@@ -573,7 +573,7 @@ static void fc_disc_gpn_ft_resp(struct fc_seq *sp, struct fc_frame *fp,
 		event = DISC_EV_FAILED;
 	}
 	if (error)
-		fc_disc_error(disc, fp);
+		fc_disc_error(disc, ERR_PTR(error));
 	else if (event != DISC_EV_NONE)
 		fc_disc_done(disc, event);
 	fc_frame_free(fp);
diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
index b58bba4604e8..7786c97e033f 100644
--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -1227,7 +1227,7 @@ static void qedf_rport_event_handler(struct fc_lport *lport,
 
 		if (rdata->spp_type != FC_TYPE_FCP) {
 			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
-			    "Not offlading since since spp type isn't FCP\n");
+			    "Not offloading since spp type isn't FCP\n");
 			break;
 		}
 		if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
diff --git a/drivers/scsi/qedi/qedi.h b/drivers/scsi/qedi/qedi.h
index 32632c9b2276..91d2f51c351b 100644
--- a/drivers/scsi/qedi/qedi.h
+++ b/drivers/scsi/qedi/qedi.h
@@ -23,11 +23,17 @@
 #include <linux/qed/qed_iscsi_if.h>
 #include <linux/qed/qed_ll2_if.h>
 #include "qedi_version.h"
+#include "qedi_nvm_iscsi_cfg.h"
 
 #define QEDI_MODULE_NAME		"qedi"
 
 struct qedi_endpoint;
 
+#ifndef GET_FIELD2
+#define GET_FIELD2(value, name) \
+	(((value) & (name ## _MASK)) >> (name ## _OFFSET))
+#endif
+
 /*
  * PCI function probe defines
  */
@@ -66,6 +72,11 @@ struct qedi_endpoint;
 #define QEDI_HW_DMA_BOUNDARY	0xfff
 #define QEDI_PATH_HANDLE	0xFE0000000UL
 
+enum qedi_nvm_tgts {
+	QEDI_NVM_TGT_PRI,
+	QEDI_NVM_TGT_SEC,
+};
+
 struct qedi_uio_ctrl {
 	/* meta data */
 	u32 uio_hsi_version;
@@ -283,6 +294,8 @@ struct qedi_ctx {
 	void *bdq_pbl_list;
 	dma_addr_t bdq_pbl_list_dma;
 	u8 bdq_pbl_list_num_entries;
+	struct nvm_iscsi_cfg *iscsi_cfg;
+	dma_addr_t nvm_buf_dma;
 	void __iomem *bdq_primary_prod;
 	void __iomem *bdq_secondary_prod;
 	u16 bdq_prod_idx;
@@ -337,6 +350,10 @@ struct qedi_ctx {
 	bool use_fast_sge;
 
 	atomic_t num_offloads;
+#define SYSFS_FLAG_FW_SEL_BOOT 2
+#define IPV6_LEN	41
+#define IPV4_LEN	17
+	struct iscsi_boot_kset *boot_kset;
 };
 
 struct qedi_work {
diff --git a/drivers/scsi/qedi/qedi_fw.c b/drivers/scsi/qedi/qedi_fw.c
index 19254bd739d9..93d54acd4a22 100644
--- a/drivers/scsi/qedi/qedi_fw.c
+++ b/drivers/scsi/qedi/qedi_fw.c
@@ -1411,7 +1411,7 @@ static void qedi_tmf_work(struct work_struct *work)
 
 	list_work = kzalloc(sizeof(*list_work), GFP_ATOMIC);
 	if (!list_work) {
-		QEDI_ERR(&qedi->dbg_ctx, "Memory alloction failed\n");
+		QEDI_ERR(&qedi->dbg_ctx, "Memory allocation failed\n");
 		goto abort_ret;
 	}
 
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index 5f5a4ef2e529..2c3783684815 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -19,6 +19,7 @@
 #include <linux/mm.h>
 #include <linux/if_vlan.h>
 #include <linux/cpu.h>
+#include <linux/iscsi_boot_sysfs.h>
 
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_device.h>
@@ -1143,6 +1144,30 @@ exit_setup_int:
 	return rc;
 }
 
+static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
+{
+	if (qedi->iscsi_cfg)
+		dma_free_coherent(&qedi->pdev->dev,
+				  sizeof(struct nvm_iscsi_cfg),
+				  qedi->iscsi_cfg, qedi->nvm_buf_dma);
+}
+
+static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
+{
+	qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev,
+					     sizeof(struct nvm_iscsi_cfg),
+					     &qedi->nvm_buf_dma, GFP_KERNEL);
+	if (!qedi->iscsi_cfg) {
+		QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
+		return -ENOMEM;
+	}
+	QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+		  "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg,
+		  qedi->nvm_buf_dma);
+
+	return 0;
+}
+
 static void qedi_free_bdq(struct qedi_ctx *qedi)
 {
 	int i;
@@ -1183,6 +1208,7 @@ static void qedi_free_global_queues(struct qedi_ctx *qedi)
 		kfree(gl[i]);
 	}
 	qedi_free_bdq(qedi);
+	qedi_free_nvm_iscsi_cfg(qedi);
 }
 
 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
@@ -1309,6 +1335,11 @@ static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
 	if (rc)
 		goto mem_alloc_failure;
 
+	/* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
+	rc = qedi_alloc_nvm_iscsi_cfg(qedi);
+	if (rc)
+		goto mem_alloc_failure;
+
 	/* Allocate a CQ and an associated PBL for each MSI-X
 	 * vector.
 	 */
@@ -1671,6 +1702,387 @@ void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
 	qedi_ops->ll2->start(qedi->cdev, &params);
 }
 
+/**
+ * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
+ * for gaps) for the matching absolute-pf-id of the QEDI device.
+ */
+static struct nvm_iscsi_block *
+qedi_get_nvram_block(struct qedi_ctx *qedi)
+{
+	int i;
+	u8 pf;
+	u32 flags;
+	struct nvm_iscsi_block *block;
+
+	pf = qedi->dev_info.common.abs_pf_id;
+	block = &qedi->iscsi_cfg->block[0];
+	for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
+		flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
+			NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
+		if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
+				NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
+			(pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
+				>> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
+			return block;
+	}
+	return NULL;
+}
+
+static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
+{
+	struct qedi_ctx *qedi = data;
+	struct nvm_iscsi_initiator *initiator;
+	char *str = buf;
+	int rc = 1;
+	u32 ipv6_en, dhcp_en, ip_len;
+	struct nvm_iscsi_block *block;
+	char *fmt, *ip, *sub, *gw;
+
+	block = qedi_get_nvram_block(qedi);
+	if (!block)
+		return 0;
+
+	initiator = &block->initiator;
+	ipv6_en = block->generic.ctrl_flags &
+		  NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
+	dhcp_en = block->generic.ctrl_flags &
+		  NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
+	/* Static IP assignments. */
+	fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
+	ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
+	ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
+	sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
+	      initiator->ipv4.subnet_mask.byte;
+	gw = ipv6_en ? initiator->ipv6.gateway.byte :
+	     initiator->ipv4.gateway.byte;
+	/* DHCP IP adjustments. */
+	fmt = dhcp_en ? "%s\n" : fmt;
+	if (dhcp_en) {
+		ip = ipv6_en ? "0::0" : "0.0.0.0";
+		sub = ip;
+		gw = ip;
+		ip_len = ipv6_en ? 5 : 8;
+	}
+
+	switch (type) {
+	case ISCSI_BOOT_ETH_IP_ADDR:
+		rc = snprintf(str, ip_len, fmt, ip);
+		break;
+	case ISCSI_BOOT_ETH_SUBNET_MASK:
+		rc = snprintf(str, ip_len, fmt, sub);
+		break;
+	case ISCSI_BOOT_ETH_GATEWAY:
+		rc = snprintf(str, ip_len, fmt, gw);
+		break;
+	case ISCSI_BOOT_ETH_FLAGS:
+		rc = snprintf(str, 3, "%hhd\n",
+			      SYSFS_FLAG_FW_SEL_BOOT);
+		break;
+	case ISCSI_BOOT_ETH_INDEX:
+		rc = snprintf(str, 3, "0\n");
+		break;
+	case ISCSI_BOOT_ETH_MAC:
+		rc = sysfs_format_mac(str, qedi->mac, ETH_ALEN);
+		break;
+	case ISCSI_BOOT_ETH_VLAN:
+		rc = snprintf(str, 12, "%d\n",
+			      GET_FIELD2(initiator->generic_cont0,
+					 NVM_ISCSI_CFG_INITIATOR_VLAN));
+		break;
+	case ISCSI_BOOT_ETH_ORIGIN:
+		if (dhcp_en)
+			rc = snprintf(str, 3, "3\n");
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+
+	return rc;
+}
+
+static umode_t qedi_eth_get_attr_visibility(void *data, int type)
+{
+	int rc = 1;
+
+	switch (type) {
+	case ISCSI_BOOT_ETH_FLAGS:
+	case ISCSI_BOOT_ETH_MAC:
+	case ISCSI_BOOT_ETH_INDEX:
+	case ISCSI_BOOT_ETH_IP_ADDR:
+	case ISCSI_BOOT_ETH_SUBNET_MASK:
+	case ISCSI_BOOT_ETH_GATEWAY:
+	case ISCSI_BOOT_ETH_ORIGIN:
+	case ISCSI_BOOT_ETH_VLAN:
+		rc = 0444;
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+	return rc;
+}
+
+static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
+{
+	struct qedi_ctx *qedi = data;
+	struct nvm_iscsi_initiator *initiator;
+	char *str = buf;
+	int rc;
+	struct nvm_iscsi_block *block;
+
+	block = qedi_get_nvram_block(qedi);
+	if (!block)
+		return 0;
+
+	initiator = &block->initiator;
+
+	switch (type) {
+	case ISCSI_BOOT_INI_INITIATOR_NAME:
+		rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n",
+			      initiator->initiator_name.byte);
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+	return rc;
+}
+
+static umode_t qedi_ini_get_attr_visibility(void *data, int type)
+{
+	int rc;
+
+	switch (type) {
+	case ISCSI_BOOT_INI_INITIATOR_NAME:
+		rc = 0444;
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+	return rc;
+}
+
+static ssize_t
+qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
+			char *buf, enum qedi_nvm_tgts idx)
+{
+	char *str = buf;
+	int rc = 1;
+	u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
+	struct nvm_iscsi_block *block;
+	char *chap_name, *chap_secret;
+	char *mchap_name, *mchap_secret;
+
+	block = qedi_get_nvram_block(qedi);
+	if (!block)
+		goto exit_show_tgt_info;
+
+	QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
+		  "Port:%d, tgt_idx:%d\n",
+		  GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
+
+	ctrl_flags = block->target[idx].ctrl_flags &
+		     NVM_ISCSI_CFG_TARGET_ENABLED;
+
+	if (!ctrl_flags) {
+		QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
+			  "Target disabled\n");
+		goto exit_show_tgt_info;
+	}
+
+	ipv6_en = block->generic.ctrl_flags &
+		  NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
+	ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
+	chap_en = block->generic.ctrl_flags &
+		  NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
+	chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
+	chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
+
+	mchap_en = block->generic.ctrl_flags &
+		  NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
+	mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
+	mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
+
+	switch (type) {
+	case ISCSI_BOOT_TGT_NAME:
+		rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n",
+			      block->target[idx].target_name.byte);
+		break;
+	case ISCSI_BOOT_TGT_IP_ADDR:
+		if (ipv6_en)
+			rc = snprintf(str, ip_len, "%pI6\n",
+				      block->target[idx].ipv6_addr.byte);
+		else
+			rc = snprintf(str, ip_len, "%pI4\n",
+				      block->target[idx].ipv4_addr.byte);
+		break;
+	case ISCSI_BOOT_TGT_PORT:
+		rc = snprintf(str, 12, "%d\n",
+			      GET_FIELD2(block->target[idx].generic_cont0,
+					 NVM_ISCSI_CFG_TARGET_TCP_PORT));
+		break;
+	case ISCSI_BOOT_TGT_LUN:
+		rc = snprintf(str, 22, "%.*d\n",
+			      block->target[idx].lun.value[1],
+			      block->target[idx].lun.value[0]);
+		break;
+	case ISCSI_BOOT_TGT_CHAP_NAME:
+		rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n",
+			      chap_name);
+		break;
+	case ISCSI_BOOT_TGT_CHAP_SECRET:
+		rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n",
+			      chap_secret);
+		break;
+	case ISCSI_BOOT_TGT_REV_CHAP_NAME:
+		rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n",
+			      mchap_name);
+		break;
+	case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
+		rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n",
+			      mchap_secret);
+		break;
+	case ISCSI_BOOT_TGT_FLAGS:
+		rc = snprintf(str, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
+		break;
+	case ISCSI_BOOT_TGT_NIC_ASSOC:
+		rc = snprintf(str, 3, "0\n");
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+
+exit_show_tgt_info:
+	return rc;
+}
+
+static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
+{
+	struct qedi_ctx *qedi = data;
+
+	return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
+}
+
+static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
+{
+	struct qedi_ctx *qedi = data;
+
+	return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
+}
+
+static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
+{
+	int rc;
+
+	switch (type) {
+	case ISCSI_BOOT_TGT_NAME:
+	case ISCSI_BOOT_TGT_IP_ADDR:
+	case ISCSI_BOOT_TGT_PORT:
+	case ISCSI_BOOT_TGT_LUN:
+	case ISCSI_BOOT_TGT_CHAP_NAME:
+	case ISCSI_BOOT_TGT_CHAP_SECRET:
+	case ISCSI_BOOT_TGT_REV_CHAP_NAME:
+	case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
+	case ISCSI_BOOT_TGT_NIC_ASSOC:
+	case ISCSI_BOOT_TGT_FLAGS:
+		rc = 0444;
+		break;
+	default:
+		rc = 0;
+		break;
+	}
+	return rc;
+}
+
+static void qedi_boot_release(void *data)
+{
+	struct qedi_ctx *qedi = data;
+
+	scsi_host_put(qedi->shost);
+}
+
+static int qedi_get_boot_info(struct qedi_ctx *qedi)
+{
+	int ret = 1;
+	u16 len;
+
+	len = sizeof(struct nvm_iscsi_cfg);
+
+	QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
+		  "Get NVM iSCSI CFG image\n");
+	ret = qedi_ops->common->nvm_get_image(qedi->cdev,
+					      QED_NVM_IMAGE_ISCSI_CFG,
+					      (char *)qedi->iscsi_cfg, len);
+	if (ret)
+		QEDI_ERR(&qedi->dbg_ctx,
+			 "Could not get NVM image. ret = %d\n", ret);
+
+	return ret;
+}
+
+static int qedi_setup_boot_info(struct qedi_ctx *qedi)
+{
+	struct iscsi_boot_kobj *boot_kobj;
+
+	if (qedi_get_boot_info(qedi))
+		return -EPERM;
+
+	qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
+	if (!qedi->boot_kset)
+		goto kset_free;
+
+	if (!scsi_host_get(qedi->shost))
+		goto kset_free;
+
+	boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
+					     qedi_show_boot_tgt_pri_info,
+					     qedi_tgt_get_attr_visibility,
+					     qedi_boot_release);
+	if (!boot_kobj)
+		goto put_host;
+
+	if (!scsi_host_get(qedi->shost))
+		goto kset_free;
+
+	boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
+					     qedi_show_boot_tgt_sec_info,
+					     qedi_tgt_get_attr_visibility,
+					     qedi_boot_release);
+	if (!boot_kobj)
+		goto put_host;
+
+	if (!scsi_host_get(qedi->shost))
+		goto kset_free;
+
+	boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
+						qedi_show_boot_ini_info,
+						qedi_ini_get_attr_visibility,
+						qedi_boot_release);
+	if (!boot_kobj)
+		goto put_host;
+
+	if (!scsi_host_get(qedi->shost))
+		goto kset_free;
+
+	boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
+					       qedi_show_boot_eth_info,
+					       qedi_eth_get_attr_visibility,
+					       qedi_boot_release);
+	if (!boot_kobj)
+		goto put_host;
+
+	return 0;
+
+put_host:
+	scsi_host_put(qedi->shost);
+kset_free:
+	iscsi_boot_destroy_kset(qedi->boot_kset);
+	return -ENOMEM;
+}
+
 static void __qedi_remove(struct pci_dev *pdev, int mode)
 {
 	struct qedi_ctx *qedi = pci_get_drvdata(pdev);
@@ -1724,6 +2136,9 @@ static void __qedi_remove(struct pci_dev *pdev, int mode)
 			qedi->ll2_recv_thread = NULL;
 		}
 		qedi_ll2_free_skbs(qedi);
+
+		if (qedi->boot_kset)
+			iscsi_boot_destroy_kset(qedi->boot_kset);
 	}
 }
 
@@ -1967,6 +2382,10 @@ static int __qedi_probe(struct pci_dev *pdev, int mode)
 		/* F/w needs 1st task context memory entry for performance */
 		set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
 		atomic_set(&qedi->num_offloads, 0);
+
+		if (qedi_setup_boot_info(qedi))
+			QEDI_ERR(&qedi->dbg_ctx,
+				 "No iSCSI boot target configured\n");
 	}
 
 	return 0;
diff --git a/drivers/scsi/qedi/qedi_nvm_iscsi_cfg.h b/drivers/scsi/qedi/qedi_nvm_iscsi_cfg.h
new file mode 100644
index 000000000000..df39b69b366d
--- /dev/null
+++ b/drivers/scsi/qedi/qedi_nvm_iscsi_cfg.h
@@ -0,0 +1,210 @@
+/*
+ * QLogic iSCSI Offload Driver
+ * Copyright (c) 2016 Cavium Inc.
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#ifndef NVM_ISCSI_CFG_H
+#define NVM_ISCSI_CFG_H
+
+#define NUM_OF_ISCSI_TARGET_PER_PF    4   /* Defined as per the
+					   * ISCSI IBFT constraint
+					   */
+#define NUM_OF_ISCSI_PF_SUPPORTED     4   /* One PF per Port -
+					   * assuming 4 port card
+					   */
+
+#define NVM_ISCSI_CFG_DHCP_NAME_MAX_LEN  256
+
+union nvm_iscsi_dhcp_vendor_id {
+	u32 value[NVM_ISCSI_CFG_DHCP_NAME_MAX_LEN / 4];
+	u8  byte[NVM_ISCSI_CFG_DHCP_NAME_MAX_LEN];
+};
+
+#define NVM_ISCSI_IPV4_ADDR_BYTE_LEN 4
+union nvm_iscsi_ipv4_addr {
+	u32 addr;
+	u8  byte[NVM_ISCSI_IPV4_ADDR_BYTE_LEN];
+};
+
+#define NVM_ISCSI_IPV6_ADDR_BYTE_LEN 16
+union nvm_iscsi_ipv6_addr {
+	u32 addr[4];
+	u8  byte[NVM_ISCSI_IPV6_ADDR_BYTE_LEN];
+};
+
+struct nvm_iscsi_initiator_ipv4 {
+	union nvm_iscsi_ipv4_addr addr;				/* 0x0 */
+	union nvm_iscsi_ipv4_addr subnet_mask;			/* 0x4 */
+	union nvm_iscsi_ipv4_addr gateway;			/* 0x8 */
+	union nvm_iscsi_ipv4_addr primary_dns;			/* 0xC */
+	union nvm_iscsi_ipv4_addr secondary_dns;		/* 0x10 */
+	union nvm_iscsi_ipv4_addr dhcp_addr;			/* 0x14 */
+
+	union nvm_iscsi_ipv4_addr isns_server;			/* 0x18 */
+	union nvm_iscsi_ipv4_addr slp_server;			/* 0x1C */
+	union nvm_iscsi_ipv4_addr primay_radius_server;		/* 0x20 */
+	union nvm_iscsi_ipv4_addr secondary_radius_server;	/* 0x24 */
+
+	union nvm_iscsi_ipv4_addr rsvd[4];			/* 0x28 */
+};
+
+struct nvm_iscsi_initiator_ipv6 {
+	union nvm_iscsi_ipv6_addr addr;				/* 0x0 */
+	union nvm_iscsi_ipv6_addr subnet_mask;			/* 0x10 */
+	union nvm_iscsi_ipv6_addr gateway;			/* 0x20 */
+	union nvm_iscsi_ipv6_addr primary_dns;			/* 0x30 */
+	union nvm_iscsi_ipv6_addr secondary_dns;		/* 0x40 */
+	union nvm_iscsi_ipv6_addr dhcp_addr;			/* 0x50 */
+
+	union nvm_iscsi_ipv6_addr isns_server;			/* 0x60 */
+	union nvm_iscsi_ipv6_addr slp_server;			/* 0x70 */
+	union nvm_iscsi_ipv6_addr primay_radius_server;		/* 0x80 */
+	union nvm_iscsi_ipv6_addr secondary_radius_server;	/* 0x90 */
+
+	union nvm_iscsi_ipv6_addr rsvd[3];			/* 0xA0 */
+
+	u32   config;						/* 0xD0 */
+#define NVM_ISCSI_CFG_INITIATOR_IPV6_SUBNET_MASK_PREFIX_MASK      0x000000FF
+#define NVM_ISCSI_CFG_INITIATOR_IPV6_SUBNET_MASK_PREFIX_OFFSET    0
+
+	u32   rsvd_1[3];
+};
+
+#define NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN  256
+union nvm_iscsi_name {
+	u32 value[NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN / 4];
+	u8  byte[NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN];
+};
+
+#define NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN  256
+union nvm_iscsi_chap_name {
+	u32 value[NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN / 4];
+	u8  byte[NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN];
+};
+
+#define NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN  16 /* md5 need per RFC1996
+					    * is 16 octets
+					    */
+union nvm_iscsi_chap_password {
+	u32 value[NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN / 4];
+	u8 byte[NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN];
+};
+
+union nvm_iscsi_lun {
+	u8  byte[8];
+	u32 value[2];
+};
+
+struct nvm_iscsi_generic {
+	u32 ctrl_flags;						/* 0x0 */
+#define NVM_ISCSI_CFG_GEN_CHAP_ENABLED                 BIT(0)
+#define NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED    BIT(1)
+#define NVM_ISCSI_CFG_GEN_DHCP_ISCSI_CONFIG_ENABLED    BIT(2)
+#define NVM_ISCSI_CFG_GEN_IPV6_ENABLED                 BIT(3)
+#define NVM_ISCSI_CFG_GEN_IPV4_FALLBACK_ENABLED        BIT(4)
+#define NVM_ISCSI_CFG_GEN_ISNS_WORLD_LOGIN             BIT(5)
+#define NVM_ISCSI_CFG_GEN_ISNS_SELECTIVE_LOGIN         BIT(6)
+#define NVM_ISCSI_CFG_GEN_ADDR_REDIRECT_ENABLED	       BIT(7)
+#define NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED          BIT(8)
+
+	u32 timeout;						/* 0x4 */
+#define NVM_ISCSI_CFG_GEN_DHCP_REQUEST_TIMEOUT_MASK       0x0000FFFF
+#define NVM_ISCSI_CFG_GEN_DHCP_REQUEST_TIMEOUT_OFFSET     0
+#define NVM_ISCSI_CFG_GEN_PORT_LOGIN_TIMEOUT_MASK         0xFFFF0000
+#define NVM_ISCSI_CFG_GEN_PORT_LOGIN_TIMEOUT_OFFSET       16
+
+	union nvm_iscsi_dhcp_vendor_id  dhcp_vendor_id;		/* 0x8  */
+	u32 rsvd[62];						/* 0x108 */
+};
+
+struct nvm_iscsi_initiator {
+	struct nvm_iscsi_initiator_ipv4 ipv4;			/* 0x0 */
+	struct nvm_iscsi_initiator_ipv6 ipv6;			/* 0x38 */
+
+	union nvm_iscsi_name           initiator_name;		/* 0x118 */
+	union nvm_iscsi_chap_name      chap_name;		/* 0x218 */
+	union nvm_iscsi_chap_password  chap_password;		/* 0x318 */
+
+	u32 generic_cont0;					/* 0x398 */
+#define NVM_ISCSI_CFG_INITIATOR_VLAN_MASK		0x0000FFFF
+#define NVM_ISCSI_CFG_INITIATOR_VLAN_OFFSET		0
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_MASK		0x00030000
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_OFFSET	16
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_4		1
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_6		2
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_4_AND_6	3
+
+	u32 ctrl_flags;
+#define NVM_ISCSI_CFG_INITIATOR_IP_VERSION_PRIORITY_V6     BIT(0)
+#define NVM_ISCSI_CFG_INITIATOR_VLAN_ENABLED               BIT(1)
+
+	u32 rsvd[116];						/* 0x32C */
+};
+
+struct nvm_iscsi_target {
+	u32 ctrl_flags;						/* 0x0 */
+#define NVM_ISCSI_CFG_TARGET_ENABLED            BIT(0)
+#define NVM_ISCSI_CFG_BOOT_TIME_LOGIN_STATUS    BIT(1)
+
+	u32 generic_cont0;					/* 0x4 */
+#define NVM_ISCSI_CFG_TARGET_TCP_PORT_MASK      0x0000FFFF
+#define NVM_ISCSI_CFG_TARGET_TCP_PORT_OFFSET    0
+
+	u32 ip_ver;
+#define NVM_ISCSI_CFG_IPv4       4
+#define NVM_ISCSI_CFG_IPv6       6
+
+	u32 rsvd_1[7];						/* 0x24 */
+	union nvm_iscsi_ipv4_addr ipv4_addr;			/* 0x28 */
+	union nvm_iscsi_ipv6_addr ipv6_addr;			/* 0x2C */
+	union nvm_iscsi_lun lun;				/* 0x3C */
+
+	union nvm_iscsi_name           target_name;		/* 0x44 */
+	union nvm_iscsi_chap_name      chap_name;		/* 0x144 */
+	union nvm_iscsi_chap_password  chap_password;		/* 0x244 */
+
+	u32 rsvd_2[107];					/* 0x2C4 */
+};
+
+struct nvm_iscsi_block {
+	u32 id;							/* 0x0 */
+#define NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK         0x0000000F
+#define NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET       0
+#define NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK            0x00000FF0
+#define NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET          4
+#define NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY    BIT(0)
+#define NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED       BIT(1)
+
+	u32 rsvd_1[5];						/* 0x4 */
+
+	struct nvm_iscsi_generic     generic;			/* 0x18 */
+	struct nvm_iscsi_initiator   initiator;			/* 0x218 */
+	struct nvm_iscsi_target      target[NUM_OF_ISCSI_TARGET_PER_PF];
+								/* 0x718 */
+
+	u32 rsvd_2[58];						/* 0x1718 */
+	/* total size - 0x1800 - 6K block */
+};
+
+struct nvm_iscsi_cfg {
+	u32 id;							/* 0x0 */
+#define NVM_ISCSI_CFG_BLK_VERSION_MINOR_MASK     0x000000FF
+#define NVM_ISCSI_CFG_BLK_VERSION_MAJOR_MASK     0x0000FF00
+#define NVM_ISCSI_CFG_BLK_SIGNATURE_MASK         0xFFFF0000
+#define NVM_ISCSI_CFG_BLK_SIGNATURE              0x49430000 /* IC - Iscsi
+							     * Config
+							     */
+
+#define NVM_ISCSI_CFG_BLK_VERSION_MAJOR          0
+#define NVM_ISCSI_CFG_BLK_VERSION_MINOR          10
+#define NVM_ISCSI_CFG_BLK_VERSION ((NVM_ISCSI_CFG_BLK_VERSION_MAJOR << 8) | \
+				   NVM_ISCSI_CFG_BLK_VERSION_MINOR)
+
+	struct nvm_iscsi_block	block[NUM_OF_ISCSI_PF_SUPPORTED]; /* 0x4 */
+};
+
+#endif
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index c2dc836dc484..e101cd3043b9 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -3727,7 +3727,7 @@ static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
 	h &= QLA_CMD_HANDLE_MASK;
 
 	if (h != QLA_TGT_NULL_HANDLE) {
-		if (unlikely(h > req->num_outstanding_cmds)) {
+		if (unlikely(h >= req->num_outstanding_cmds)) {
 			ql_dbg(ql_dbg_tgt, vha, 0xe052,
 			    "qla_target(%d): Wrong handle %x received\n",
 			    vha->vp_idx, handle);
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 21225d62b0c1..1e82d4128a84 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -758,8 +758,11 @@ static bool sg_is_valid_dxfer(sg_io_hdr_t *hp)
 		if (hp->dxferp || hp->dxfer_len > 0)
 			return false;
 		return true;
-	case SG_DXFER_TO_DEV:
 	case SG_DXFER_FROM_DEV:
+		if (hp->dxfer_len < 0)
+			return false;
+		return true;
+	case SG_DXFER_TO_DEV:
 	case SG_DXFER_TO_FROM_DEV:
 		if (!hp->dxferp || hp->dxfer_len == 0)
 			return false;
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 8b93197daefe..9be211d68b15 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -837,6 +837,7 @@ static struct scsi_host_template virtscsi_host_template_multi = {
 	.eh_abort_handler = virtscsi_abort,
 	.eh_device_reset_handler = virtscsi_device_reset,
 	.eh_timed_out = virtscsi_eh_timed_out,
+	.slave_alloc = virtscsi_device_alloc,
 
 	.can_queue = 1024,
 	.dma_boundary = UINT_MAX,