diff --git a/block/iscsi/login.c b/block/iscsi/login.c
new file mode 100644
index 0000000..acafad0
--- /dev/null
+++ b/block/iscsi/login.c
@@ -0,0 +1,374 @@
+/*
+   Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include "iscsi.h"
+#include "iscsi-private.h"
+
+int
+iscsi_login_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
+		  void *private_data)
+{
+	struct iscsi_pdu *pdu;
+	char *str;
+	int ret;
+
+	if (iscsi->is_loggedin != 0) {
+		iscsi_set_error(iscsi, "Trying to login while already logged "
+				"in.");
+		return -1;
+	}
+
+	switch (iscsi->session_type) {
+	case ISCSI_SESSION_DISCOVERY:
+	case ISCSI_SESSION_NORMAL:
+		break;
+	default:
+		iscsi_set_error(iscsi, "trying to login without setting "
+				"session type.");
+		return -2;
+	}
+
+	pdu = iscsi_allocate_pdu(iscsi, ISCSI_PDU_LOGIN_REQUEST,
+				 ISCSI_PDU_LOGIN_RESPONSE);
+	if (pdu == NULL) {
+		iscsi_set_error(iscsi, "Out-of-memory: Failed to allocate "
+				"login pdu.");
+		return -3;
+	}
+
+	/* login request */
+	iscsi_pdu_set_immediate(pdu);
+
+	/* flags */
+	iscsi_pdu_set_pduflags(pdu, ISCSI_PDU_LOGIN_TRANSIT
+					| ISCSI_PDU_LOGIN_CSG_OPNEG
+					| ISCSI_PDU_LOGIN_NSG_FF);
+
+
+	/* initiator name */
+	if (asprintf(&str, "InitiatorName=%s", iscsi->initiator_name) == -1) {
+		iscsi_set_error(iscsi, "Out-of-memory: asprintf failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -4;
+	}
+	ret = iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str,
+				 strlen(str)+1);
+	free(str);
+	if (ret != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -5;
+	}
+
+	/* optional alias */
+	if (iscsi->alias) {
+		if (asprintf(&str, "InitiatorAlias=%s", iscsi->alias) == -1) {
+			iscsi_set_error(iscsi, "Out-of-memory: asprintf "
+					"failed.");
+			iscsi_free_pdu(iscsi, pdu);
+			return -6;
+		}
+		ret = iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str,
+					 strlen(str)+1);
+		free(str);
+		if (ret != 0) {
+			iscsi_set_error(iscsi, "Out-of-memory: pdu add data "
+					"failed.");
+			iscsi_free_pdu(iscsi, pdu);
+			return -7;
+		}
+	}
+
+	/* target name */
+	if (iscsi->session_type == ISCSI_SESSION_NORMAL) {
+		if (iscsi->target_name == NULL) {
+			iscsi_set_error(iscsi, "Trying normal connect but "
+					"target name not set.");
+			iscsi_free_pdu(iscsi, pdu);
+			return -8;
+		}
+
+		if (asprintf(&str, "TargetName=%s", iscsi->target_name) == -1) {
+			iscsi_set_error(iscsi, "Out-of-memory: asprintf "
+					"failed.");
+			iscsi_free_pdu(iscsi, pdu);
+			return -9;
+		}
+		ret = iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str,
+					 strlen(str)+1);
+		free(str);
+		if (ret != 0) {
+			iscsi_set_error(iscsi, "Out-of-memory: pdu add data "
+					"failed.");
+			iscsi_free_pdu(iscsi, pdu);
+			return -10;
+		}
+	}
+
+	/* session type */
+	switch (iscsi->session_type) {
+	case ISCSI_SESSION_DISCOVERY:
+		str = (char *)"SessionType=Discovery";
+		break;
+	case ISCSI_SESSION_NORMAL:
+		str = (char *)"SessionType=Normal";
+		break;
+	default:
+		iscsi_set_error(iscsi, "Can not handle sessions %d yet.",
+				iscsi->session_type);
+		return -11;
+	}
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -12;
+	}
+
+	switch (iscsi->want_header_digest) {
+	case ISCSI_HEADER_DIGEST_NONE:
+		str = (char *)"HeaderDigest=None";
+		break;
+	case ISCSI_HEADER_DIGEST_NONE_CRC32C:
+		str = (char *)"HeaderDigest=None,CRC32C";
+		break;
+	case ISCSI_HEADER_DIGEST_CRC32C_NONE:
+		str = (char *)"HeaderDigest=CRC32C,None";
+		break;
+	case ISCSI_HEADER_DIGEST_CRC32C:
+		str = (char *)"HeaderDigest=CRC32C";
+		break;
+	}
+
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -13;
+	}
+	str = (char *)"DataDigest=None";
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -15;
+	}
+	str = (char *)"InitialR2T=Yes";
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -16;
+	}
+	str = (char *)"ImmediateData=Yes";
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -17;
+	}
+	str = (char *)"MaxBurstLength=262144";
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -18;
+	}
+	str = (char *)"FirstBurstLength=262144";
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -19;
+	}
+	str = (char *)"MaxRecvDataSegmentLength=262144";
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -20;
+	}
+	str = (char *)"DataPDUInOrder=Yes";
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -21;
+	}
+	str = (char *)"DataSequenceInOrder=Yes";
+	if (iscsi_pdu_add_data(iscsi, pdu, (unsigned char *)str, strlen(str)+1)
+	    != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: pdu add data failed.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -22;
+	}
+
+
+	pdu->callback     = cb;
+	pdu->private_data = private_data;
+
+	if (iscsi_queue_pdu(iscsi, pdu) != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: failed to queue iscsi "
+				"pdu.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -23;
+	}
+
+	return 0;
+}
+
+int
+iscsi_process_login_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
+			  const unsigned char *hdr, int size)
+{
+	int status;
+
+	if (size < ISCSI_HEADER_SIZE) {
+		iscsi_set_error(iscsi, "dont have enough data to read status "
+				"from login reply");
+		return -1;
+	}
+
+	status = ntohs(*(uint16_t *)&hdr[36]);
+	if (status != 0) {
+		pdu->callback(iscsi, SCSI_STATUS_ERROR, NULL,
+			      pdu->private_data);
+		return 0;
+	}
+
+	iscsi->statsn = ntohs(*(uint16_t *)&hdr[24]);
+
+	/* XXX here we should parse the data returned in case the target
+	 * renegotiated some some parameters.
+	 *  we should also do proper handshaking if the target is not yet
+	 * prepared to transition to the next stage
+	 */
+	/* skip past the header */
+	hdr  += ISCSI_HEADER_SIZE;
+	size -= ISCSI_HEADER_SIZE;
+
+	while (size > 0) {
+		int len;
+
+		len = strlen((char *)hdr);
+
+		if (len == 0) {
+			break;
+		}
+
+		if (len > size) {
+			iscsi_set_error(iscsi, "len > size when parsing "
+					"login data %d>%d", len, size);
+			pdu->callback(iscsi, SCSI_STATUS_ERROR, NULL,
+				      pdu->private_data);
+			return -1;
+		}
+
+		/* parse the strings */
+		if (!strncmp((char *)hdr, "HeaderDigest=", 13)) {
+			if (!strcmp((char *)hdr + 13, "CRC32C")) {
+				iscsi->header_digest
+				  = ISCSI_HEADER_DIGEST_CRC32C;
+			} else {
+				iscsi->header_digest
+				  = ISCSI_HEADER_DIGEST_NONE;
+			}
+		}
+
+		hdr  += len + 1;
+		size -= len + 1;
+	}
+
+
+	iscsi->is_loggedin = 1;
+	pdu->callback(iscsi, SCSI_STATUS_GOOD, NULL, pdu->private_data);
+
+	return 0;
+}
+
+
+int
+iscsi_logout_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
+		   void *private_data)
+{
+	struct iscsi_pdu *pdu;
+
+	if (iscsi->is_loggedin == 0) {
+		iscsi_set_error(iscsi, "Trying to logout while not logged in.");
+		return -1;
+	}
+
+	pdu = iscsi_allocate_pdu(iscsi, ISCSI_PDU_LOGOUT_REQUEST,
+				 ISCSI_PDU_LOGOUT_RESPONSE);
+	if (pdu == NULL) {
+		iscsi_set_error(iscsi, "Out-of-memory: Failed to allocate "
+				"logout pdu.");
+		return -2;
+	}
+
+	/* logout request has the immediate flag set */
+	iscsi_pdu_set_immediate(pdu);
+
+	/* flags : close the session */
+	iscsi_pdu_set_pduflags(pdu, 0x80);
+
+
+	pdu->callback     = cb;
+	pdu->private_data = private_data;
+
+	if (iscsi_queue_pdu(iscsi, pdu) != 0) {
+		iscsi_set_error(iscsi, "Out-of-memory: failed to queue iscsi "
+				"logout pdu.");
+		iscsi_free_pdu(iscsi, pdu);
+		return -3;
+	}
+
+	return 0;
+}
+
+int
+iscsi_process_logout_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
+const unsigned char *hdr, int size)
+{
+	iscsi->is_loggedin = 0;
+	pdu->callback(iscsi, SCSI_STATUS_GOOD, NULL, pdu->private_data);
+
+	return 0;
+}
+
+int
+iscsi_set_session_type(struct iscsi_context *iscsi,
+		       enum iscsi_session_type session_type)
+{
+	if (iscsi->is_loggedin) {
+		iscsi_set_error(iscsi, "trying to set session type while "
+				"logged in");
+		return -2;
+	}
+
+	iscsi->session_type = session_type;
+
+	return 0;
+}
