6 files changed, 45 insertions, 297 deletions

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index c24fb10de60b..6a4ea29c2f36 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -2243,7 +2243,6 @@ static int iscsit_handle_snack(
 	case 0:
 		return iscsit_handle_recovery_datain_or_r2t(conn, buf,
 			hdr->itt, hdr->ttt, hdr->begrun, hdr->runlength);
-		return 0;
 	case ISCSI_FLAG_SNACK_TYPE_STATUS:
 		return iscsit_handle_status_snack(conn, hdr->itt, hdr->ttt,
 			hdr->begrun, hdr->runlength);
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index f095e65b1ccf..f1643dbf6a92 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -268,7 +268,7 @@ struct se_tpg_np *lio_target_call_addnptotpg(
 				ISCSI_TCP);
 	if (IS_ERR(tpg_np)) {
 		iscsit_put_tpg(tpg);
-		return ERR_PTR(PTR_ERR(tpg_np));
+		return ERR_CAST(tpg_np);
 	}
 	pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 
@@ -1285,7 +1285,7 @@ struct se_wwn *lio_target_call_coreaddtiqn(
 
 	tiqn = iscsit_add_tiqn((unsigned char *)name);
 	if (IS_ERR(tiqn))
-		return ERR_PTR(PTR_ERR(tiqn));
+		return ERR_CAST(tiqn);
 	/*
 	 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
 	 */
diff --git a/drivers/target/iscsi/iscsi_target_erl1.c b/drivers/target/iscsi/iscsi_target_erl1.c
index 980650792cf6..c4c68da3e500 100644
--- a/drivers/target/iscsi/iscsi_target_erl1.c
+++ b/drivers/target/iscsi/iscsi_target_erl1.c
@@ -834,7 +834,7 @@ static int iscsit_attach_ooo_cmdsn(
 			 */
 			list_for_each_entry(ooo_tmp, &sess->sess_ooo_cmdsn_list,
 						ooo_list) {
-				while (ooo_tmp->cmdsn < ooo_cmdsn->cmdsn)
+				if (ooo_tmp->cmdsn < ooo_cmdsn->cmdsn)
 					continue;
 
 				list_add(&ooo_cmdsn->ooo_list,
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index bcaf82f47037..daad362a93ce 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -1013,19 +1013,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
 					ISCSI_LOGIN_STATUS_TARGET_ERROR);
 			goto new_sess_out;
 		}
-#if 0
-		if (!iscsi_ntop6((const unsigned char *)
-				&sock_in6.sin6_addr.in6_u,
-				(char *)&conn->ipv6_login_ip[0],
-				IPV6_ADDRESS_SPACE)) {
-			pr_err("iscsi_ntop6() failed\n");
-			iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
-					ISCSI_LOGIN_STATUS_TARGET_ERROR);
-			goto new_sess_out;
-		}
-#else
-		pr_debug("Skipping iscsi_ntop6()\n");
-#endif
+		snprintf(conn->login_ip, sizeof(conn->login_ip), "%pI6c",
+				&sock_in6.sin6_addr.in6_u);
+		conn->login_port = ntohs(sock_in6.sin6_port);
 	} else {
 		memset(&sock_in, 0, sizeof(struct sockaddr_in));
 
diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c
index 252e246cf51e..5b773160200f 100644
--- a/drivers/target/iscsi/iscsi_target_parameters.c
+++ b/drivers/target/iscsi/iscsi_target_parameters.c
@@ -545,13 +545,13 @@ int iscsi_copy_param_list(
 	struct iscsi_param_list *src_param_list,
 	int leading)
 {
-	struct iscsi_param *new_param = NULL, *param = NULL;
+	struct iscsi_param *param = NULL;
+	struct iscsi_param *new_param = NULL;
 	struct iscsi_param_list *param_list = NULL;
 
 	param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
 	if (!param_list) {
-		pr_err("Unable to allocate memory for"
-				" struct iscsi_param_list.\n");
+		pr_err("Unable to allocate memory for struct iscsi_param_list.\n");
 		goto err_out;
 	}
 	INIT_LIST_HEAD(&param_list->param_list);
@@ -567,8 +567,17 @@ int iscsi_copy_param_list(
 
 		new_param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
 		if (!new_param) {
-			pr_err("Unable to allocate memory for"
-				" struct iscsi_param.\n");
+			pr_err("Unable to allocate memory for struct iscsi_param.\n");
+			goto err_out;
+		}
+
+		new_param->name = kstrdup(param->name, GFP_KERNEL);
+		new_param->value = kstrdup(param->value, GFP_KERNEL);
+		if (!new_param->value || !new_param->name) {
+			kfree(new_param->value);
+			kfree(new_param->name);
+			kfree(new_param);
+			pr_err("Unable to allocate memory for parameter name/value.\n");
 			goto err_out;
 		}
 
@@ -580,32 +589,12 @@ int iscsi_copy_param_list(
 		new_param->use = param->use;
 		new_param->type_range = param->type_range;
 
-		new_param->name = kzalloc(strlen(param->name) + 1, GFP_KERNEL);
-		if (!new_param->name) {
-			pr_err("Unable to allocate memory for"
-				" parameter name.\n");
-			goto err_out;
-		}
-
-		new_param->value = kzalloc(strlen(param->value) + 1,
-				GFP_KERNEL);
-		if (!new_param->value) {
-			pr_err("Unable to allocate memory for"
-				" parameter value.\n");
-			goto err_out;
-		}
-
-		memcpy(new_param->name, param->name, strlen(param->name));
-		new_param->name[strlen(param->name)] = '\0';
-		memcpy(new_param->value, param->value, strlen(param->value));
-		new_param->value[strlen(param->value)] = '\0';
-
 		list_add_tail(&new_param->p_list, &param_list->param_list);
 	}
 
-	if (!list_empty(&param_list->param_list))
+	if (!list_empty(&param_list->param_list)) {
 		*dst_param_list = param_list;
-	else {
+	} else {
 		pr_err("No parameters allocated.\n");
 		goto err_out;
 	}
@@ -1441,7 +1430,7 @@ static int iscsi_enforce_integrity_rules(
 	u8 DataSequenceInOrder = 0;
 	u8 ErrorRecoveryLevel = 0, SessionType = 0;
 	u8 IFMarker = 0, OFMarker = 0;
-	u8 IFMarkInt_Reject = 0, OFMarkInt_Reject = 0;
+	u8 IFMarkInt_Reject = 1, OFMarkInt_Reject = 1;
 	u32 FirstBurstLength = 0, MaxBurstLength = 0;
 	struct iscsi_param *param = NULL;
 
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index a1acb0167902..f00137f377b2 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -243,7 +243,7 @@ struct iscsi_cmd *iscsit_allocate_se_cmd_for_tmr(
 	if (!cmd->tmr_req) {
 		pr_err("Unable to allocate memory for"
 			" Task Management command!\n");
-		return NULL;
+		goto out;
 	}
 	/*
 	 * TASK_REASSIGN for ERL=2 / connection stays inside of
@@ -298,8 +298,6 @@ struct iscsi_cmd *iscsit_allocate_se_cmd_for_tmr(
 	return cmd;
 out:
 	iscsit_release_cmd(cmd);
-	if (se_cmd)
-		transport_free_se_cmd(se_cmd);
 	return NULL;
 }
 
@@ -877,40 +875,6 @@ void iscsit_inc_session_usage_count(struct iscsi_session *sess)
 }
 
 /*
- *	Used before iscsi_do[rx,tx]_data() to determine iov and [rx,tx]_marker
- *	array counts needed for sync and steering.
- */
-static int iscsit_determine_sync_and_steering_counts(
-	struct iscsi_conn *conn,
-	struct iscsi_data_count *count)
-{
-	u32 length = count->data_length;
-	u32 marker, markint;
-
-	count->sync_and_steering = 1;
-
-	marker = (count->type == ISCSI_RX_DATA) ?
-			conn->of_marker : conn->if_marker;
-	markint = (count->type == ISCSI_RX_DATA) ?
-			(conn->conn_ops->OFMarkInt * 4) :
-			(conn->conn_ops->IFMarkInt * 4);
-	count->ss_iov_count = count->iov_count;
-
-	while (length > 0) {
-		if (length >= marker) {
-			count->ss_iov_count += 3;
-			count->ss_marker_count += 2;
-
-			length -= marker;
-			marker = markint;
-		} else
-			length = 0;
-	}
-
-	return 0;
-}
-
-/*
  *	Setup conn->if_marker and conn->of_marker values based upon
  *	the initial marker-less interval. (see iSCSI v19 A.2)
  */
@@ -1292,7 +1256,7 @@ int iscsit_fe_sendpage_sg(
 	struct kvec iov;
 	u32 tx_hdr_size, data_len;
 	u32 offset = cmd->first_data_sg_off;
-	int tx_sent;
+	int tx_sent, iov_off;
 
 send_hdr:
 	tx_hdr_size = ISCSI_HDR_LEN;
@@ -1312,9 +1276,19 @@ send_hdr:
 	}
 
 	data_len = cmd->tx_size - tx_hdr_size - cmd->padding;
-	if (conn->conn_ops->DataDigest)
+	/*
+	 * Set iov_off used by padding and data digest tx_data() calls below
+	 * in order to determine proper offset into cmd->iov_data[]
+	 */
+	if (conn->conn_ops->DataDigest) {
 		data_len -= ISCSI_CRC_LEN;
-
+		if (cmd->padding)
+			iov_off = (cmd->iov_data_count - 2);
+		else
+			iov_off = (cmd->iov_data_count - 1);
+	} else {
+		iov_off = (cmd->iov_data_count - 1);
+	}
 	/*
 	 * Perform sendpage() for each page in the scatterlist
 	 */
@@ -1343,8 +1317,7 @@ send_pg:
 
 send_padding:
 	if (cmd->padding) {
-		struct kvec *iov_p =
-			&cmd->iov_data[cmd->iov_data_count-1];
+		struct kvec *iov_p = &cmd->iov_data[iov_off++];
 
 		tx_sent = tx_data(conn, iov_p, 1, cmd->padding);
 		if (cmd->padding != tx_sent) {
@@ -1358,8 +1331,7 @@ send_padding:
 
 send_datacrc:
 	if (conn->conn_ops->DataDigest) {
-		struct kvec *iov_d =
-			&cmd->iov_data[cmd->iov_data_count];
+		struct kvec *iov_d = &cmd->iov_data[iov_off];
 
 		tx_sent = tx_data(conn, iov_d, 1, ISCSI_CRC_LEN);
 		if (ISCSI_CRC_LEN != tx_sent) {
@@ -1433,8 +1405,7 @@ static int iscsit_do_rx_data(
 	struct iscsi_data_count *count)
 {
 	int data = count->data_length, rx_loop = 0, total_rx = 0, iov_len;
-	u32 rx_marker_val[count->ss_marker_count], rx_marker_iov = 0;
-	struct kvec iov[count->ss_iov_count], *iov_p;
+	struct kvec *iov_p;
 	struct msghdr msg;
 
 	if (!conn || !conn->sock || !conn->conn_ops)
@@ -1442,93 +1413,8 @@ static int iscsit_do_rx_data(
 
 	memset(&msg, 0, sizeof(struct msghdr));
 
-	if (count->sync_and_steering) {
-		int size = 0;
-		u32 i, orig_iov_count = 0;
-		u32 orig_iov_len = 0, orig_iov_loc = 0;
-		u32 iov_count = 0, per_iov_bytes = 0;
-		u32 *rx_marker, old_rx_marker = 0;
-		struct kvec *iov_record;
-
-		memset(&rx_marker_val, 0,
-				count->ss_marker_count * sizeof(u32));
-		memset(&iov, 0, count->ss_iov_count * sizeof(struct kvec));
-
-		iov_record = count->iov;
-		orig_iov_count = count->iov_count;
-		rx_marker = &conn->of_marker;
-
-		i = 0;
-		size = data;
-		orig_iov_len = iov_record[orig_iov_loc].iov_len;
-		while (size > 0) {
-			pr_debug("rx_data: #1 orig_iov_len %u,"
-			" orig_iov_loc %u\n", orig_iov_len, orig_iov_loc);
-			pr_debug("rx_data: #2 rx_marker %u, size"
-				" %u\n", *rx_marker, size);
-
-			if (orig_iov_len >= *rx_marker) {
-				iov[iov_count].iov_len = *rx_marker;
-				iov[iov_count++].iov_base =
-					(iov_record[orig_iov_loc].iov_base +
-						per_iov_bytes);
-
-				iov[iov_count].iov_len = (MARKER_SIZE / 2);
-				iov[iov_count++].iov_base =
-					&rx_marker_val[rx_marker_iov++];
-				iov[iov_count].iov_len = (MARKER_SIZE / 2);
-				iov[iov_count++].iov_base =
-					&rx_marker_val[rx_marker_iov++];
-				old_rx_marker = *rx_marker;
-
-				/*
-				 * OFMarkInt is in 32-bit words.
-				 */
-				*rx_marker = (conn->conn_ops->OFMarkInt * 4);
-				size -= old_rx_marker;
-				orig_iov_len -= old_rx_marker;
-				per_iov_bytes += old_rx_marker;
-
-				pr_debug("rx_data: #3 new_rx_marker"
-					" %u, size %u\n", *rx_marker, size);
-			} else {
-				iov[iov_count].iov_len = orig_iov_len;
-				iov[iov_count++].iov_base =
-					(iov_record[orig_iov_loc].iov_base +
-						per_iov_bytes);
-
-				per_iov_bytes = 0;
-				*rx_marker -= orig_iov_len;
-				size -= orig_iov_len;
-
-				if (size)
-					orig_iov_len =
-					iov_record[++orig_iov_loc].iov_len;
-
-				pr_debug("rx_data: #4 new_rx_marker"
-					" %u, size %u\n", *rx_marker, size);
-			}
-		}
-		data += (rx_marker_iov * (MARKER_SIZE / 2));
-
-		iov_p	= &iov[0];
-		iov_len	= iov_count;
-
-		if (iov_count > count->ss_iov_count) {
-			pr_err("iov_count: %d, count->ss_iov_count:"
-				" %d\n", iov_count, count->ss_iov_count);
-			return -1;
-		}
-		if (rx_marker_iov > count->ss_marker_count) {
-			pr_err("rx_marker_iov: %d, count->ss_marker"
-				"_count: %d\n", rx_marker_iov,
-				count->ss_marker_count);
-			return -1;
-		}
-	} else {
-		iov_p = count->iov;
-		iov_len	= count->iov_count;
-	}
+	iov_p = count->iov;
+	iov_len	= count->iov_count;
 
 	while (total_rx < data) {
 		rx_loop = kernel_recvmsg(conn->sock, &msg, iov_p, iov_len,
@@ -1543,16 +1429,6 @@ static int iscsit_do_rx_data(
 				rx_loop, total_rx, data);
 	}
 
-	if (count->sync_and_steering) {
-		int j;
-		for (j = 0; j < rx_marker_iov; j++) {
-			pr_debug("rx_data: #5 j: %d, offset: %d\n",
-				j, rx_marker_val[j]);
-			conn->of_marker_offset = rx_marker_val[j];
-		}
-		total_rx -= (rx_marker_iov * (MARKER_SIZE / 2));
-	}
-
 	return total_rx;
 }
 
@@ -1561,8 +1437,7 @@ static int iscsit_do_tx_data(
 	struct iscsi_data_count *count)
 {
 	int data = count->data_length, total_tx = 0, tx_loop = 0, iov_len;
-	u32 tx_marker_val[count->ss_marker_count], tx_marker_iov = 0;
-	struct kvec iov[count->ss_iov_count], *iov_p;
+	struct kvec *iov_p;
 	struct msghdr msg;
 
 	if (!conn || !conn->sock || !conn->conn_ops)
@@ -1575,98 +1450,8 @@ static int iscsit_do_tx_data(
 
 	memset(&msg, 0, sizeof(struct msghdr));
 
-	if (count->sync_and_steering) {
-		int size = 0;
-		u32 i, orig_iov_count = 0;
-		u32 orig_iov_len = 0, orig_iov_loc = 0;
-		u32 iov_count = 0, per_iov_bytes = 0;
-		u32 *tx_marker, old_tx_marker = 0;
-		struct kvec *iov_record;
-
-		memset(&tx_marker_val, 0,
-			count->ss_marker_count * sizeof(u32));
-		memset(&iov, 0, count->ss_iov_count * sizeof(struct kvec));
-
-		iov_record = count->iov;
-		orig_iov_count = count->iov_count;
-		tx_marker = &conn->if_marker;
-
-		i = 0;
-		size = data;
-		orig_iov_len = iov_record[orig_iov_loc].iov_len;
-		while (size > 0) {
-			pr_debug("tx_data: #1 orig_iov_len %u,"
-			" orig_iov_loc %u\n", orig_iov_len, orig_iov_loc);
-			pr_debug("tx_data: #2 tx_marker %u, size"
-				" %u\n", *tx_marker, size);
-
-			if (orig_iov_len >= *tx_marker) {
-				iov[iov_count].iov_len = *tx_marker;
-				iov[iov_count++].iov_base =
-					(iov_record[orig_iov_loc].iov_base +
-						per_iov_bytes);
-
-				tx_marker_val[tx_marker_iov] =
-						(size - *tx_marker);
-				iov[iov_count].iov_len = (MARKER_SIZE / 2);
-				iov[iov_count++].iov_base =
-					&tx_marker_val[tx_marker_iov++];
-				iov[iov_count].iov_len = (MARKER_SIZE / 2);
-				iov[iov_count++].iov_base =
-					&tx_marker_val[tx_marker_iov++];
-				old_tx_marker = *tx_marker;
-
-				/*
-				 * IFMarkInt is in 32-bit words.
-				 */
-				*tx_marker = (conn->conn_ops->IFMarkInt * 4);
-				size -= old_tx_marker;
-				orig_iov_len -= old_tx_marker;
-				per_iov_bytes += old_tx_marker;
-
-				pr_debug("tx_data: #3 new_tx_marker"
-					" %u, size %u\n", *tx_marker, size);
-				pr_debug("tx_data: #4 offset %u\n",
-					tx_marker_val[tx_marker_iov-1]);
-			} else {
-				iov[iov_count].iov_len = orig_iov_len;
-				iov[iov_count++].iov_base
-					= (iov_record[orig_iov_loc].iov_base +
-						per_iov_bytes);
-
-				per_iov_bytes = 0;
-				*tx_marker -= orig_iov_len;
-				size -= orig_iov_len;
-
-				if (size)
-					orig_iov_len =
-					iov_record[++orig_iov_loc].iov_len;
-
-				pr_debug("tx_data: #5 new_tx_marker"
-					" %u, size %u\n", *tx_marker, size);
-			}
-		}
-
-		data += (tx_marker_iov * (MARKER_SIZE / 2));
-
-		iov_p = &iov[0];
-		iov_len = iov_count;
-
-		if (iov_count > count->ss_iov_count) {
-			pr_err("iov_count: %d, count->ss_iov_count:"
-				" %d\n", iov_count, count->ss_iov_count);
-			return -1;
-		}
-		if (tx_marker_iov > count->ss_marker_count) {
-			pr_err("tx_marker_iov: %d, count->ss_marker"
-				"_count: %d\n", tx_marker_iov,
-				count->ss_marker_count);
-			return -1;
-		}
-	} else {
-		iov_p = count->iov;
-		iov_len = count->iov_count;
-	}
+	iov_p = count->iov;
+	iov_len = count->iov_count;
 
 	while (total_tx < data) {
 		tx_loop = kernel_sendmsg(conn->sock, &msg, iov_p, iov_len,
@@ -1681,9 +1466,6 @@ static int iscsit_do_tx_data(
 					tx_loop, total_tx, data);
 	}
 
-	if (count->sync_and_steering)
-		total_tx -= (tx_marker_iov * (MARKER_SIZE / 2));
-
 	return total_tx;
 }
 
@@ -1704,12 +1486,6 @@ int rx_data(
 	c.data_length = data;
 	c.type = ISCSI_RX_DATA;
 
-	if (conn->conn_ops->OFMarker &&
-	   (conn->conn_state >= TARG_CONN_STATE_LOGGED_IN)) {
-		if (iscsit_determine_sync_and_steering_counts(conn, &c) < 0)
-			return -1;
-	}
-
 	return iscsit_do_rx_data(conn, &c);
 }
 
@@ -1730,12 +1506,6 @@ int tx_data(
 	c.data_length = data;
 	c.type = ISCSI_TX_DATA;
 
-	if (conn->conn_ops->IFMarker &&
-	   (conn->conn_state >= TARG_CONN_STATE_LOGGED_IN)) {
-		if (iscsit_determine_sync_and_steering_counts(conn, &c) < 0)
-			return -1;
-	}
-
 	return iscsit_do_tx_data(conn, &c);
 }