18 files changed, 53 insertions, 383 deletions

diff --git a/drivers/target/iscsi/Kconfig b/drivers/target/iscsi/Kconfig
index 922b207bc69d..70d76f3dd693 100644
--- a/drivers/target/iscsi/Kconfig
+++ b/drivers/target/iscsi/Kconfig
@@ -2,9 +2,9 @@
 config ISCSI_TARGET
 	tristate "SCSI Target Mode Stack"
 	depends on INET
+	select CRC32
 	select CRYPTO
-	select CRYPTO_CRC32C
-	select CRYPTO_CRC32C_INTEL if X86
+	select CRYPTO_HASH
 	help
 	Say M to enable the SCSI target mode stack. A SCSI target mode stack
 	is software that makes local storage available over a storage network
diff --git a/drivers/target/iscsi/cxgbit/cxgbit_target.c b/drivers/target/iscsi/cxgbit/cxgbit_target.c
index acfc39683c87..3698f2eb097e 100644
--- a/drivers/target/iscsi/cxgbit/cxgbit_target.c
+++ b/drivers/target/iscsi/cxgbit/cxgbit_target.c
@@ -7,7 +7,7 @@
 #include <linux/kthread.h>
 #include <linux/sched/signal.h>
 
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 #include <net/tcp.h>
 #include <target/target_core_base.h>
 #include <target/target_core_fabric.h>
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 1d25e64b068a..1244ef3aa86c 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -8,7 +8,7 @@
  *
  ******************************************************************************/
 
-#include <crypto/hash.h>
+#include <linux/crc32c.h>
 #include <linux/string.h>
 #include <linux/kthread.h>
 #include <linux/completion.h>
@@ -17,7 +17,7 @@
 #include <linux/idr.h>
 #include <linux/delay.h>
 #include <linux/sched/signal.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 #include <linux/inet.h>
 #include <net/ipv6.h>
 #include <scsi/scsi_proto.h>
@@ -490,8 +490,8 @@ void iscsit_aborted_task(struct iscsit_conn *conn, struct iscsit_cmd *cmd)
 }
 EXPORT_SYMBOL(iscsit_aborted_task);
 
-static void iscsit_do_crypto_hash_buf(struct ahash_request *, const void *,
-				      u32, u32, const void *, void *);
+static u32 iscsit_crc_buf(const void *buf, u32 payload_length,
+			  u32 padding, const void *pad_bytes);
 static void iscsit_tx_thread_wait_for_tcp(struct iscsit_conn *);
 
 static int
@@ -510,9 +510,7 @@ iscsit_xmit_nondatain_pdu(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 	if (conn->conn_ops->HeaderDigest) {
 		u32 *header_digest = (u32 *)&cmd->pdu[ISCSI_HDR_LEN];
 
-		iscsit_do_crypto_hash_buf(conn->conn_tx_hash, hdr,
-					  ISCSI_HDR_LEN, 0, NULL,
-					  header_digest);
+		*header_digest = iscsit_crc_buf(hdr, ISCSI_HDR_LEN, 0, NULL);
 
 		iov[0].iov_len += ISCSI_CRC_LEN;
 		tx_size += ISCSI_CRC_LEN;
@@ -537,11 +535,9 @@ iscsit_xmit_nondatain_pdu(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 		}
 
 		if (conn->conn_ops->DataDigest) {
-			iscsit_do_crypto_hash_buf(conn->conn_tx_hash,
-						  data_buf, data_buf_len,
-						  padding, &cmd->pad_bytes,
-						  &cmd->data_crc);
-
+			cmd->data_crc = iscsit_crc_buf(data_buf, data_buf_len,
+						       padding,
+						       &cmd->pad_bytes);
 			iov[niov].iov_base = &cmd->data_crc;
 			iov[niov++].iov_len = ISCSI_CRC_LEN;
 			tx_size += ISCSI_CRC_LEN;
@@ -566,8 +562,8 @@ iscsit_xmit_nondatain_pdu(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 static int iscsit_map_iovec(struct iscsit_cmd *cmd, struct kvec *iov, int nvec,
 			    u32 data_offset, u32 data_length);
 static void iscsit_unmap_iovec(struct iscsit_cmd *);
-static u32 iscsit_do_crypto_hash_sg(struct ahash_request *, struct iscsit_cmd *,
-				    u32, u32, u32, u8 *);
+static u32 iscsit_crc_sglist(const struct iscsit_cmd *cmd, u32 data_length,
+			     u32 padding, const u8 *pad_bytes);
 static int
 iscsit_xmit_datain_pdu(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 		       const struct iscsi_datain *datain)
@@ -584,10 +580,8 @@ iscsit_xmit_datain_pdu(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 	if (conn->conn_ops->HeaderDigest) {
 		u32 *header_digest = (u32 *)&cmd->pdu[ISCSI_HDR_LEN];
 
-		iscsit_do_crypto_hash_buf(conn->conn_tx_hash, cmd->pdu,
-					  ISCSI_HDR_LEN, 0, NULL,
-					  header_digest);
-
+		*header_digest = iscsit_crc_buf(cmd->pdu, ISCSI_HDR_LEN, 0,
+						NULL);
 		iov[0].iov_len += ISCSI_CRC_LEN;
 		tx_size += ISCSI_CRC_LEN;
 
@@ -614,12 +608,8 @@ iscsit_xmit_datain_pdu(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 	}
 
 	if (conn->conn_ops->DataDigest) {
-		cmd->data_crc = iscsit_do_crypto_hash_sg(conn->conn_tx_hash,
-							 cmd, datain->offset,
-							 datain->length,
-							 cmd->padding,
-							 cmd->pad_bytes);
-
+		cmd->data_crc = iscsit_crc_sglist(cmd, datain->length,
+						  cmd->padding, cmd->pad_bytes);
 		iov[iov_count].iov_base	= &cmd->data_crc;
 		iov[iov_count++].iov_len = ISCSI_CRC_LEN;
 		tx_size += ISCSI_CRC_LEN;
@@ -1404,77 +1394,45 @@ iscsit_handle_scsi_cmd(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 	return iscsit_get_immediate_data(cmd, hdr, dump_payload);
 }
 
-static u32 iscsit_do_crypto_hash_sg(
-	struct ahash_request *hash,
-	struct iscsit_cmd *cmd,
-	u32 data_offset,
-	u32 data_length,
-	u32 padding,
-	u8 *pad_bytes)
+static u32 iscsit_crc_sglist(const struct iscsit_cmd *cmd, u32 data_length,
+			     u32 padding, const u8 *pad_bytes)
 {
-	u32 data_crc;
-	struct scatterlist *sg;
-	unsigned int page_off;
-
-	crypto_ahash_init(hash);
-
-	sg = cmd->first_data_sg;
-	page_off = cmd->first_data_sg_off;
-
-	if (data_length && page_off) {
-		struct scatterlist first_sg;
-		u32 len = min_t(u32, data_length, sg->length - page_off);
-
-		sg_init_table(&first_sg, 1);
-		sg_set_page(&first_sg, sg_page(sg), len, sg->offset + page_off);
-
-		ahash_request_set_crypt(hash, &first_sg, NULL, len);
-		crypto_ahash_update(hash);
-
-		data_length -= len;
-		sg = sg_next(sg);
-	}
+	struct scatterlist *sg = cmd->first_data_sg;
+	unsigned int page_off = cmd->first_data_sg_off;
+	u32 crc = ~0;
 
 	while (data_length) {
-		u32 cur_len = min_t(u32, data_length, sg->length);
+		u32 cur_len = min_t(u32, data_length, sg->length - page_off);
+		const void *virt;
 
-		ahash_request_set_crypt(hash, sg, NULL, cur_len);
-		crypto_ahash_update(hash);
+		virt = kmap_local_page(sg_page(sg)) + sg->offset + page_off;
+		crc = crc32c(crc, virt, cur_len);
+		kunmap_local(virt);
 
-		data_length -= cur_len;
 		/* iscsit_map_iovec has already checked for invalid sg pointers */
 		sg = sg_next(sg);
-	}
-
-	if (padding) {
-		struct scatterlist pad_sg;
 
-		sg_init_one(&pad_sg, pad_bytes, padding);
-		ahash_request_set_crypt(hash, &pad_sg, (u8 *)&data_crc,
-					padding);
-		crypto_ahash_finup(hash);
-	} else {
-		ahash_request_set_crypt(hash, NULL, (u8 *)&data_crc, 0);
-		crypto_ahash_final(hash);
+		page_off = 0;
+		data_length -= cur_len;
 	}
 
-	return data_crc;
+	if (padding)
+		crc = crc32c(crc, pad_bytes, padding);
+
+	return ~crc;
 }
 
-static void iscsit_do_crypto_hash_buf(struct ahash_request *hash,
-	const void *buf, u32 payload_length, u32 padding,
-	const void *pad_bytes, void *data_crc)
+static u32 iscsit_crc_buf(const void *buf, u32 payload_length,
+			  u32 padding, const void *pad_bytes)
 {
-	struct scatterlist sg[2];
+	u32 crc = ~0;
 
-	sg_init_table(sg, ARRAY_SIZE(sg));
-	sg_set_buf(sg, buf, payload_length);
-	if (padding)
-		sg_set_buf(sg + 1, pad_bytes, padding);
+	crc = crc32c(crc, buf, payload_length);
 
-	ahash_request_set_crypt(hash, sg, data_crc, payload_length + padding);
+	if (padding)
+		crc = crc32c(crc, pad_bytes, padding);
 
-	crypto_ahash_digest(hash);
+	return ~crc;
 }
 
 int
@@ -1662,11 +1620,8 @@ iscsit_get_dataout(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 	if (conn->conn_ops->DataDigest) {
 		u32 data_crc;
 
-		data_crc = iscsit_do_crypto_hash_sg(conn->conn_rx_hash, cmd,
-						    be32_to_cpu(hdr->offset),
-						    payload_length, padding,
-						    cmd->pad_bytes);
-
+		data_crc = iscsit_crc_sglist(cmd, payload_length, padding,
+					     cmd->pad_bytes);
 		if (checksum != data_crc) {
 			pr_err("ITT: 0x%08x, Offset: %u, Length: %u,"
 				" DataSN: 0x%08x, CRC32C DataDigest 0x%08x"
@@ -1925,10 +1880,8 @@ static int iscsit_handle_nop_out(struct iscsit_conn *conn, struct iscsit_cmd *cm
 		}
 
 		if (conn->conn_ops->DataDigest) {
-			iscsit_do_crypto_hash_buf(conn->conn_rx_hash, ping_data,
-						  payload_length, padding,
-						  cmd->pad_bytes, &data_crc);
-
+			data_crc = iscsit_crc_buf(ping_data, payload_length,
+						  padding, cmd->pad_bytes);
 			if (checksum != data_crc) {
 				pr_err("Ping data CRC32C DataDigest"
 				" 0x%08x does not match computed 0x%08x\n",
@@ -2328,10 +2281,7 @@ iscsit_handle_text_cmd(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 			goto reject;
 
 		if (conn->conn_ops->DataDigest) {
-			iscsit_do_crypto_hash_buf(conn->conn_rx_hash,
-						  text_in, rx_size, 0, NULL,
-						  &data_crc);
-
+			data_crc = iscsit_crc_buf(text_in, rx_size, 0, NULL);
 			if (checksum != data_crc) {
 				pr_err("Text data CRC32C DataDigest"
 					" 0x%08x does not match computed"
@@ -2688,10 +2638,8 @@ static int iscsit_handle_immediate_data(
 	if (conn->conn_ops->DataDigest) {
 		u32 data_crc;
 
-		data_crc = iscsit_do_crypto_hash_sg(conn->conn_rx_hash, cmd,
-						    cmd->write_data_done, length, padding,
-						    cmd->pad_bytes);
-
+		data_crc = iscsit_crc_sglist(cmd, length, padding,
+					     cmd->pad_bytes);
 		if (checksum != data_crc) {
 			pr_err("ImmediateData CRC32C DataDigest 0x%08x"
 				" does not match computed 0x%08x\n", checksum,
@@ -4116,10 +4064,8 @@ static void iscsit_get_rx_pdu(struct iscsit_conn *conn)
 				break;
 			}
 
-			iscsit_do_crypto_hash_buf(conn->conn_rx_hash, buffer,
-						  ISCSI_HDR_LEN, 0, NULL,
-						  &checksum);
-
+			checksum = iscsit_crc_buf(buffer, ISCSI_HDR_LEN, 0,
+						  NULL);
 			if (digest != checksum) {
 				pr_err("HeaderDigest CRC32C failed,"
 					" received 0x%08x, computed 0x%08x\n",
@@ -4406,15 +4352,6 @@ int iscsit_close_connection(
 	 */
 	iscsit_check_conn_usage_count(conn);
 
-	ahash_request_free(conn->conn_tx_hash);
-	if (conn->conn_rx_hash) {
-		struct crypto_ahash *tfm;
-
-		tfm = crypto_ahash_reqtfm(conn->conn_rx_hash);
-		ahash_request_free(conn->conn_rx_hash);
-		crypto_free_ahash(tfm);
-	}
-
 	if (conn->sock)
 		sock_release(conn->sock);
 
@@ -4727,21 +4664,6 @@ int iscsit_logout_post_handler(
 }
 EXPORT_SYMBOL(iscsit_logout_post_handler);
 
-void iscsit_fail_session(struct iscsit_session *sess)
-{
-	struct iscsit_conn *conn;
-
-	spin_lock_bh(&sess->conn_lock);
-	list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
-		pr_debug("Moving to TARG_CONN_STATE_CLEANUP_WAIT.\n");
-		conn->conn_state = TARG_CONN_STATE_CLEANUP_WAIT;
-	}
-	spin_unlock_bh(&sess->conn_lock);
-
-	pr_debug("Moving to TARG_SESS_STATE_FAILED.\n");
-	sess->session_state = TARG_SESS_STATE_FAILED;
-}
-
 void iscsit_stop_session(
 	struct iscsit_session *sess,
 	int session_sleep,
diff --git a/drivers/target/iscsi/iscsi_target.h b/drivers/target/iscsi/iscsi_target.h
index 0c997a08adec..f4addae2aae4 100644
--- a/drivers/target/iscsi/iscsi_target.h
+++ b/drivers/target/iscsi/iscsi_target.h
@@ -15,7 +15,6 @@ struct kref;
 struct sockaddr_storage;
 
 extern struct iscsi_tiqn *iscsit_get_tiqn_for_login(unsigned char *);
-extern struct iscsi_tiqn *iscsit_get_tiqn(unsigned char *, int);
 extern void iscsit_put_tiqn_for_login(struct iscsi_tiqn *);
 extern struct iscsi_tiqn *iscsit_add_tiqn(unsigned char *);
 extern void iscsit_del_tiqn(struct iscsi_tiqn *);
@@ -35,14 +34,12 @@ extern void iscsit_set_unsolicited_dataout(struct iscsit_cmd *);
 extern int iscsit_logout_closesession(struct iscsit_cmd *, struct iscsit_conn *);
 extern int iscsit_logout_closeconnection(struct iscsit_cmd *, struct iscsit_conn *);
 extern int iscsit_logout_removeconnforrecovery(struct iscsit_cmd *, struct iscsit_conn *);
-extern int iscsit_send_async_msg(struct iscsit_conn *, u16, u8, u8);
 extern int iscsit_build_r2ts_for_cmd(struct iscsit_conn *, struct iscsit_cmd *, bool recovery);
 extern void iscsit_thread_get_cpumask(struct iscsit_conn *);
 extern int iscsi_target_tx_thread(void *);
 extern int iscsi_target_rx_thread(void *);
 extern int iscsit_close_connection(struct iscsit_conn *);
 extern int iscsit_close_session(struct iscsit_session *, bool can_sleep);
-extern void iscsit_fail_session(struct iscsit_session *);
 extern void iscsit_stop_session(struct iscsit_session *, int, int);
 extern int iscsit_release_sessions_for_tpg(struct iscsi_portal_group *, int);
 
diff --git a/drivers/target/iscsi/iscsi_target_erl1.c b/drivers/target/iscsi/iscsi_target_erl1.c
index 679720021183..d9a6242264b7 100644
--- a/drivers/target/iscsi/iscsi_target_erl1.c
+++ b/drivers/target/iscsi/iscsi_target_erl1.c
@@ -583,7 +583,7 @@ int iscsit_dataout_datapduinorder_no_fbit(
 	struct iscsi_pdu *pdu)
 {
 	int i, send_recovery_r2t = 0, recovery = 0;
-	u32 length = 0, offset = 0, pdu_count = 0, xfer_len = 0;
+	u32 length = 0, offset = 0, pdu_count = 0;
 	struct iscsit_conn *conn = cmd->conn;
 	struct iscsi_pdu *first_pdu = NULL;
 
@@ -596,7 +596,6 @@ int iscsit_dataout_datapduinorder_no_fbit(
 			if (cmd->pdu_list[i].seq_no == pdu->seq_no) {
 				if (!first_pdu)
 					first_pdu = &cmd->pdu_list[i];
-				xfer_len += cmd->pdu_list[i].length;
 				pdu_count++;
 			} else if (pdu_count)
 				break;
diff --git a/drivers/target/iscsi/iscsi_target_erl2.c b/drivers/target/iscsi/iscsi_target_erl2.c
index 18e88d2ea5fd..56d78af7cec7 100644
--- a/drivers/target/iscsi/iscsi_target_erl2.c
+++ b/drivers/target/iscsi/iscsi_target_erl2.c
@@ -25,54 +25,6 @@
 /*
  *	FIXME: Does RData SNACK apply here as well?
  */
-void iscsit_create_conn_recovery_datain_values(
-	struct iscsit_cmd *cmd,
-	__be32 exp_data_sn)
-{
-	u32 data_sn = 0;
-	struct iscsit_conn *conn = cmd->conn;
-
-	cmd->next_burst_len = 0;
-	cmd->read_data_done = 0;
-
-	while (be32_to_cpu(exp_data_sn) > data_sn) {
-		if ((cmd->next_burst_len +
-		     conn->conn_ops->MaxRecvDataSegmentLength) <
-		     conn->sess->sess_ops->MaxBurstLength) {
-			cmd->read_data_done +=
-			       conn->conn_ops->MaxRecvDataSegmentLength;
-			cmd->next_burst_len +=
-			       conn->conn_ops->MaxRecvDataSegmentLength;
-		} else {
-			cmd->read_data_done +=
-				(conn->sess->sess_ops->MaxBurstLength -
-				cmd->next_burst_len);
-			cmd->next_burst_len = 0;
-		}
-		data_sn++;
-	}
-}
-
-void iscsit_create_conn_recovery_dataout_values(
-	struct iscsit_cmd *cmd)
-{
-	u32 write_data_done = 0;
-	struct iscsit_conn *conn = cmd->conn;
-
-	cmd->data_sn = 0;
-	cmd->next_burst_len = 0;
-
-	while (cmd->write_data_done > write_data_done) {
-		if ((write_data_done + conn->sess->sess_ops->MaxBurstLength) <=
-		     cmd->write_data_done)
-			write_data_done += conn->sess->sess_ops->MaxBurstLength;
-		else
-			break;
-	}
-
-	cmd->write_data_done = write_data_done;
-}
-
 static int iscsit_attach_active_connection_recovery_entry(
 	struct iscsit_session *sess,
 	struct iscsi_conn_recovery *cr)
diff --git a/drivers/target/iscsi/iscsi_target_erl2.h b/drivers/target/iscsi/iscsi_target_erl2.h
index 6655e4bcf893..9064c74eef7a 100644
--- a/drivers/target/iscsi/iscsi_target_erl2.h
+++ b/drivers/target/iscsi/iscsi_target_erl2.h
@@ -9,8 +9,6 @@ struct iscsit_conn;
 struct iscsi_conn_recovery;
 struct iscsit_session;
 
-extern void iscsit_create_conn_recovery_datain_values(struct iscsit_cmd *, __be32);
-extern void iscsit_create_conn_recovery_dataout_values(struct iscsit_cmd *);
 extern struct iscsi_conn_recovery *iscsit_get_inactive_connection_recovery_entry(
 			struct iscsit_session *, u16);
 extern void iscsit_free_connection_recovery_entries(struct iscsit_session *);
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 90b870f234f0..c2ac9a99ebbb 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -8,7 +8,6 @@
  *
  ******************************************************************************/
 
-#include <crypto/hash.h>
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/kthread.h>
@@ -71,46 +70,6 @@ out_login:
 	return NULL;
 }
 
-/*
- * Used by iscsi_target_nego.c:iscsi_target_locate_portal() to setup
- * per struct iscsit_conn libcrypto contexts for crc32c and crc32-intel
- */
-int iscsi_login_setup_crypto(struct iscsit_conn *conn)
-{
-	struct crypto_ahash *tfm;
-
-	/*
-	 * Setup slicing by CRC32C algorithm for RX and TX libcrypto contexts
-	 * which will default to crc32c_intel.ko for cpu_has_xmm4_2, or fallback
-	 * to software 1x8 byte slicing from crc32c.ko
-	 */
-	tfm = crypto_alloc_ahash("crc32c", 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(tfm)) {
-		pr_err("crypto_alloc_ahash() failed\n");
-		return -ENOMEM;
-	}
-
-	conn->conn_rx_hash = ahash_request_alloc(tfm, GFP_KERNEL);
-	if (!conn->conn_rx_hash) {
-		pr_err("ahash_request_alloc() failed for conn_rx_hash\n");
-		crypto_free_ahash(tfm);
-		return -ENOMEM;
-	}
-	ahash_request_set_callback(conn->conn_rx_hash, 0, NULL, NULL);
-
-	conn->conn_tx_hash = ahash_request_alloc(tfm, GFP_KERNEL);
-	if (!conn->conn_tx_hash) {
-		pr_err("ahash_request_alloc() failed for conn_tx_hash\n");
-		ahash_request_free(conn->conn_rx_hash);
-		conn->conn_rx_hash = NULL;
-		crypto_free_ahash(tfm);
-		return -ENOMEM;
-	}
-	ahash_request_set_callback(conn->conn_tx_hash, 0, NULL, NULL);
-
-	return 0;
-}
-
 static int iscsi_login_check_initiator_version(
 	struct iscsit_conn *conn,
 	u8 version_max,
@@ -1165,15 +1124,6 @@ old_sess_out:
 		iscsit_dec_session_usage_count(conn->sess);
 	}
 
-	ahash_request_free(conn->conn_tx_hash);
-	if (conn->conn_rx_hash) {
-		struct crypto_ahash *tfm;
-
-		tfm = crypto_ahash_reqtfm(conn->conn_rx_hash);
-		ahash_request_free(conn->conn_rx_hash);
-		crypto_free_ahash(tfm);
-	}
-
 	if (conn->param_list) {
 		iscsi_release_param_list(conn->param_list);
 		conn->param_list = NULL;
diff --git a/drivers/target/iscsi/iscsi_target_login.h b/drivers/target/iscsi/iscsi_target_login.h
index 3ca2f232b387..03c7d695d58f 100644
--- a/drivers/target/iscsi/iscsi_target_login.h
+++ b/drivers/target/iscsi/iscsi_target_login.h
@@ -9,7 +9,6 @@ struct iscsi_login;
 struct iscsi_np;
 struct sockaddr_storage;
 
-extern int iscsi_login_setup_crypto(struct iscsit_conn *);
 extern int iscsi_check_for_session_reinstatement(struct iscsit_conn *);
 extern int iscsi_login_post_auth_non_zero_tsih(struct iscsit_conn *, u16, u32);
 extern int iscsit_setup_np(struct iscsi_np *,
@@ -24,6 +23,5 @@ extern int iscsit_start_kthreads(struct iscsit_conn *);
 extern void iscsi_post_login_handler(struct iscsi_np *, struct iscsit_conn *, u8);
 extern void iscsi_target_login_sess_out(struct iscsit_conn *, bool, bool);
 extern int iscsi_target_login_thread(void *);
-extern void iscsi_handle_login_thread_timeout(struct timer_list *t);
 
 #endif   /*** ISCSI_TARGET_LOGIN_H ***/
diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index fa3fb5f4e6bc..16e3ded98c32 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -1194,14 +1194,7 @@ int iscsi_target_locate_portal(
 			goto get_target;
 
 		sess->sess_ops->SessionType = 1;
-		/*
-		 * Setup crc32c modules from libcrypto
-		 */
-		if (iscsi_login_setup_crypto(conn) < 0) {
-			pr_err("iscsi_login_setup_crypto() failed\n");
-			ret = -1;
-			goto out;
-		}
+
 		/*
 		 * Serialize access across the discovery struct iscsi_portal_group to
 		 * process login attempt.
@@ -1258,17 +1251,7 @@ get_target:
 	}
 	conn->tpg_np = tpg_np;
 	pr_debug("Located Portal Group Object: %hu\n", conn->tpg->tpgt);
-	/*
-	 * Setup crc32c modules from libcrypto
-	 */
-	if (iscsi_login_setup_crypto(conn) < 0) {
-		pr_err("iscsi_login_setup_crypto() failed\n");
-		kref_put(&tpg_np->tpg_np_kref, iscsit_login_kref_put);
-		iscsit_put_tiqn_for_login(tiqn);
-		conn->tpg = NULL;
-		ret = -1;
-		goto out;
-	}
+
 	/*
 	 * Serialize access across the struct iscsi_portal_group to
 	 * process login attempt.
diff --git a/drivers/target/iscsi/iscsi_target_nego.h b/drivers/target/iscsi/iscsi_target_nego.h
index 41c3db3ddeaa..e60a46d34835 100644
--- a/drivers/target/iscsi/iscsi_target_nego.h
+++ b/drivers/target/iscsi/iscsi_target_nego.h
@@ -15,8 +15,6 @@ extern int extract_param(const char *, const char *, unsigned int, char *,
 		unsigned char *);
 extern int iscsi_target_check_login_request(struct iscsit_conn *,
 		struct iscsi_login *);
-extern int iscsi_target_get_initial_payload(struct iscsit_conn *,
-		struct iscsi_login *);
 extern int iscsi_target_locate_portal(struct iscsi_np *, struct iscsit_conn *,
 		struct iscsi_login *);
 extern int iscsi_target_start_negotiation(
diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c
index 5b90c22ee3dc..1d4e1788e073 100644
--- a/drivers/target/iscsi/iscsi_target_parameters.c
+++ b/drivers/target/iscsi/iscsi_target_parameters.c
@@ -67,54 +67,6 @@ int iscsi_login_tx_data(
 	return 0;
 }
 
-void iscsi_dump_conn_ops(struct iscsi_conn_ops *conn_ops)
-{
-	pr_debug("HeaderDigest: %s\n", (conn_ops->HeaderDigest) ?
-				"CRC32C" : "None");
-	pr_debug("DataDigest: %s\n", (conn_ops->DataDigest) ?
-				"CRC32C" : "None");
-	pr_debug("MaxRecvDataSegmentLength: %u\n",
-				conn_ops->MaxRecvDataSegmentLength);
-}
-
-void iscsi_dump_sess_ops(struct iscsi_sess_ops *sess_ops)
-{
-	pr_debug("InitiatorName: %s\n", sess_ops->InitiatorName);
-	pr_debug("InitiatorAlias: %s\n", sess_ops->InitiatorAlias);
-	pr_debug("TargetName: %s\n", sess_ops->TargetName);
-	pr_debug("TargetAlias: %s\n", sess_ops->TargetAlias);
-	pr_debug("TargetPortalGroupTag: %hu\n",
-			sess_ops->TargetPortalGroupTag);
-	pr_debug("MaxConnections: %hu\n", sess_ops->MaxConnections);
-	pr_debug("InitialR2T: %s\n",
-			(sess_ops->InitialR2T) ? "Yes" : "No");
-	pr_debug("ImmediateData: %s\n", (sess_ops->ImmediateData) ?
-			"Yes" : "No");
-	pr_debug("MaxBurstLength: %u\n", sess_ops->MaxBurstLength);
-	pr_debug("FirstBurstLength: %u\n", sess_ops->FirstBurstLength);
-	pr_debug("DefaultTime2Wait: %hu\n", sess_ops->DefaultTime2Wait);
-	pr_debug("DefaultTime2Retain: %hu\n",
-			sess_ops->DefaultTime2Retain);
-	pr_debug("MaxOutstandingR2T: %hu\n",
-			sess_ops->MaxOutstandingR2T);
-	pr_debug("DataPDUInOrder: %s\n",
-			(sess_ops->DataPDUInOrder) ? "Yes" : "No");
-	pr_debug("DataSequenceInOrder: %s\n",
-			(sess_ops->DataSequenceInOrder) ? "Yes" : "No");
-	pr_debug("ErrorRecoveryLevel: %hu\n",
-			sess_ops->ErrorRecoveryLevel);
-	pr_debug("SessionType: %s\n", (sess_ops->SessionType) ?
-			"Discovery" : "Normal");
-}
-
-void iscsi_print_params(struct iscsi_param_list *param_list)
-{
-	struct iscsi_param *param;
-
-	list_for_each_entry(param, &param_list->param_list, p_list)
-		pr_debug("%s: %s\n", param->name, param->value);
-}
-
 static struct iscsi_param *iscsi_set_default_param(struct iscsi_param_list *param_list,
 		char *name, char *value, u8 phase, u8 scope, u8 sender,
 		u16 type_range, u8 use)
diff --git a/drivers/target/iscsi/iscsi_target_parameters.h b/drivers/target/iscsi/iscsi_target_parameters.h
index 00fbbebb8c75..c672a971fcb7 100644
--- a/drivers/target/iscsi/iscsi_target_parameters.h
+++ b/drivers/target/iscsi/iscsi_target_parameters.h
@@ -32,9 +32,6 @@ struct iscsi_sess_ops;
 
 extern int iscsi_login_rx_data(struct iscsit_conn *, char *, int);
 extern int iscsi_login_tx_data(struct iscsit_conn *, char *, char *, int);
-extern void iscsi_dump_conn_ops(struct iscsi_conn_ops *);
-extern void iscsi_dump_sess_ops(struct iscsi_sess_ops *);
-extern void iscsi_print_params(struct iscsi_param_list *);
 extern int iscsi_create_default_params(struct iscsi_param_list **);
 extern int iscsi_set_keys_to_negotiate(struct iscsi_param_list *, bool);
 extern int iscsi_set_keys_irrelevant_for_discovery(struct iscsi_param_list *);
diff --git a/drivers/target/iscsi/iscsi_target_tmr.c b/drivers/target/iscsi/iscsi_target_tmr.c
index 9c4aa01b6351..f60b156ede12 100644
--- a/drivers/target/iscsi/iscsi_target_tmr.c
+++ b/drivers/target/iscsi/iscsi_target_tmr.c
@@ -8,7 +8,7 @@
  *
  ******************************************************************************/
 
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 #include <scsi/scsi_proto.h>
 #include <scsi/iscsi_proto.h>
 #include <target/target_core_base.h>
diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
index f7bac98fd4fe..bf06cfdfb012 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.c
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -200,11 +200,6 @@ static void iscsit_clear_tpg_np_login_threads(
 	spin_unlock(&tpg->tpg_np_lock);
 }
 
-void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
-{
-	iscsi_print_params(tpg->param_list);
-}
-
 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg)
 {
 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h
index 71d067f62177..1155b7b3164a 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.h
+++ b/drivers/target/iscsi/iscsi_target_tpg.h
@@ -18,18 +18,12 @@ extern struct iscsi_portal_group *iscsit_get_tpg_from_np(struct iscsi_tiqn *,
 			struct iscsi_np *, struct iscsi_tpg_np **);
 extern int iscsit_get_tpg(struct iscsi_portal_group *);
 extern void iscsit_put_tpg(struct iscsi_portal_group *);
-extern void iscsit_tpg_dump_params(struct iscsi_portal_group *);
 extern int iscsit_tpg_add_portal_group(struct iscsi_tiqn *, struct iscsi_portal_group *);
 extern int iscsit_tpg_del_portal_group(struct iscsi_tiqn *, struct iscsi_portal_group *,
 			int);
 extern int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *);
 extern int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *, int);
-extern struct iscsi_node_acl *iscsit_tpg_add_initiator_node_acl(
-			struct iscsi_portal_group *, const char *, u32);
-extern void iscsit_tpg_del_initiator_node_acl(struct iscsi_portal_group *,
-			struct se_node_acl *);
 extern struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(struct iscsit_session *);
-extern void iscsit_tpg_del_external_nps(struct iscsi_tpg_np *);
 extern struct iscsi_tpg_np *iscsit_tpg_locate_child_np(struct iscsi_tpg_np *, int);
 extern struct iscsi_tpg_np *iscsit_tpg_add_network_portal(struct iscsi_portal_group *,
 			struct sockaddr_storage *, struct iscsi_tpg_np *,
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index 91a75a4a7cc1..ed2dadb21f75 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -333,50 +333,6 @@ int iscsit_sequence_cmd(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 }
 EXPORT_SYMBOL(iscsit_sequence_cmd);
 
-int iscsit_check_unsolicited_dataout(struct iscsit_cmd *cmd, unsigned char *buf)
-{
-	struct iscsit_conn *conn = cmd->conn;
-	struct se_cmd *se_cmd = &cmd->se_cmd;
-	struct iscsi_data *hdr = (struct iscsi_data *) buf;
-	u32 payload_length = ntoh24(hdr->dlength);
-
-	if (conn->sess->sess_ops->InitialR2T) {
-		pr_err("Received unexpected unsolicited data"
-			" while InitialR2T=Yes, protocol error.\n");
-		transport_send_check_condition_and_sense(se_cmd,
-				TCM_UNEXPECTED_UNSOLICITED_DATA, 0);
-		return -1;
-	}
-
-	if ((cmd->first_burst_len + payload_length) >
-	     conn->sess->sess_ops->FirstBurstLength) {
-		pr_err("Total %u bytes exceeds FirstBurstLength: %u"
-			" for this Unsolicited DataOut Burst.\n",
-			(cmd->first_burst_len + payload_length),
-				conn->sess->sess_ops->FirstBurstLength);
-		transport_send_check_condition_and_sense(se_cmd,
-				TCM_INCORRECT_AMOUNT_OF_DATA, 0);
-		return -1;
-	}
-
-	if (!(hdr->flags & ISCSI_FLAG_CMD_FINAL))
-		return 0;
-
-	if (((cmd->first_burst_len + payload_length) != cmd->se_cmd.data_length) &&
-	    ((cmd->first_burst_len + payload_length) !=
-	      conn->sess->sess_ops->FirstBurstLength)) {
-		pr_err("Unsolicited non-immediate data received %u"
-			" does not equal FirstBurstLength: %u, and does"
-			" not equal ExpXferLen %u.\n",
-			(cmd->first_burst_len + payload_length),
-			conn->sess->sess_ops->FirstBurstLength, cmd->se_cmd.data_length);
-		transport_send_check_condition_and_sense(se_cmd,
-				TCM_INCORRECT_AMOUNT_OF_DATA, 0);
-		return -1;
-	}
-	return 0;
-}
-
 struct iscsit_cmd *iscsit_find_cmd_from_itt(
 	struct iscsit_conn *conn,
 	itt_t init_task_tag)
@@ -1252,20 +1208,6 @@ int iscsit_tx_login_rsp(struct iscsit_conn *conn, u8 status_class, u8 status_det
 	return conn->conn_transport->iscsit_put_login_tx(conn, login, 0);
 }
 
-void iscsit_print_session_params(struct iscsit_session *sess)
-{
-	struct iscsit_conn *conn;
-
-	pr_debug("-----------------------------[Session Params for"
-		" SID: %u]-----------------------------\n", sess->sid);
-	spin_lock_bh(&sess->conn_lock);
-	list_for_each_entry(conn, &sess->sess_conn_list, conn_list)
-		iscsi_dump_conn_ops(conn->conn_ops);
-	spin_unlock_bh(&sess->conn_lock);
-
-	iscsi_dump_sess_ops(sess->sess_ops);
-}
-
 int rx_data(
 	struct iscsit_conn *conn,
 	struct kvec *iov,
diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h
index 24b8e577575a..7ae48a8a5cbf 100644
--- a/drivers/target/iscsi/iscsi_target_util.h
+++ b/drivers/target/iscsi/iscsi_target_util.h
@@ -17,14 +17,12 @@ extern struct iscsi_r2t *iscsit_get_r2t_for_eos(struct iscsit_cmd *, u32, u32);
 extern struct iscsi_r2t *iscsit_get_r2t_from_list(struct iscsit_cmd *);
 extern void iscsit_free_r2t(struct iscsi_r2t *, struct iscsit_cmd *);
 extern void iscsit_free_r2ts_from_list(struct iscsit_cmd *);
-extern struct iscsit_cmd *iscsit_alloc_cmd(struct iscsit_conn *, gfp_t);
 extern struct iscsit_cmd *iscsit_allocate_cmd(struct iscsit_conn *, int);
 extern struct iscsi_seq *iscsit_get_seq_holder_for_datain(struct iscsit_cmd *, u32);
 extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsit_cmd *);
 extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsit_cmd *, u32);
 extern int iscsit_sequence_cmd(struct iscsit_conn *conn, struct iscsit_cmd *cmd,
 			       unsigned char * ,__be32 cmdsn);
-extern int iscsit_check_unsolicited_dataout(struct iscsit_cmd *, unsigned char *);
 extern struct iscsit_cmd *iscsit_find_cmd_from_itt_or_dump(struct iscsit_conn *,
 			itt_t, u32);
 extern struct iscsit_cmd *iscsit_find_cmd_from_ttt(struct iscsit_conn *, u32);
@@ -34,7 +32,6 @@ extern void iscsit_add_cmd_to_immediate_queue(struct iscsit_cmd *, struct iscsit
 extern struct iscsi_queue_req *iscsit_get_cmd_from_immediate_queue(struct iscsit_conn *);
 extern int iscsit_add_cmd_to_response_queue(struct iscsit_cmd *, struct iscsit_conn *, u8);
 extern struct iscsi_queue_req *iscsit_get_cmd_from_response_queue(struct iscsit_conn *);
-extern void iscsit_remove_cmd_from_tx_queues(struct iscsit_cmd *, struct iscsit_conn *);
 extern bool iscsit_conn_all_queues_empty(struct iscsit_conn *);
 extern void iscsit_free_queue_reqs_for_conn(struct iscsit_conn *);
 extern void iscsit_release_cmd(struct iscsit_cmd *);
@@ -63,10 +60,6 @@ extern int iscsit_set_login_timer_kworker(struct iscsit_conn *, struct task_stru
 extern int iscsit_send_tx_data(struct iscsit_cmd *, struct iscsit_conn *, int);
 extern int iscsit_fe_sendpage_sg(struct iscsit_cmd *, struct iscsit_conn *);
 extern int iscsit_tx_login_rsp(struct iscsit_conn *, u8, u8);
-extern void iscsit_print_session_params(struct iscsit_session *);
-extern int iscsit_print_dev_to_proc(char *, char **, off_t, int);
-extern int iscsit_print_sessions_to_proc(char *, char **, off_t, int);
-extern int iscsit_print_tpg_to_proc(char *, char **, off_t, int);
 extern int rx_data(struct iscsit_conn *, struct kvec *, int, int);
 extern int tx_data(struct iscsit_conn *, struct kvec *, int, int);
 extern void iscsit_collect_login_stats(struct iscsit_conn *, u8, u8);