Imported Upstream version 1.8.14upstream/1.8.14

1 files changed, 2112 insertions, 0 deletions

diff --git a/src/plugins/lan/lan.c b/src/plugins/lan/lan.c
new file mode 100644
index 0000000..fb1a633
--- /dev/null
+++ b/src/plugins/lan/lan.c
@@ -0,0 +1,2112 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc.  All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * Redistribution of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 
+ * Redistribution in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind.
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
+ * SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE
+ * FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
+ * OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.  IN NO EVENT WILL
+ * SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA,
+ * OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
+ * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
+ * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
+ * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <errno.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <fcntl.h>
+
+#include <ipmitool/helper.h>
+#include <ipmitool/log.h>
+#include <ipmitool/bswap.h>
+#include <ipmitool/ipmi.h>
+#include <ipmitool/ipmi_sel.h>
+#include <ipmitool/ipmi_intf.h>
+#include <ipmitool/ipmi_oem.h>
+#include <ipmitool/ipmi_strings.h>
+#include <ipmitool/ipmi_constants.h>
+#include <ipmitool/hpm2.h>
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "lan.h"
+#include "rmcp.h"
+#include "asf.h"
+#include "auth.h"
+
+#define IPMI_LAN_TIMEOUT	2
+#define IPMI_LAN_RETRY		4
+#define IPMI_LAN_PORT		0x26f
+#define IPMI_LAN_CHANNEL_E	0x0e
+
+/*
+ * LAN interface is required to support 45 byte request transactions and
+ * 42 byte response transactions.
+ */
+#define IPMI_LAN_MAX_REQUEST_SIZE	38	/* 45 - 7 */
+#define IPMI_LAN_MAX_RESPONSE_SIZE	34	/* 42 - 8 */
+
+extern const struct valstr ipmi_privlvl_vals[];
+extern const struct valstr ipmi_authtype_session_vals[];
+extern int verbose;
+
+struct ipmi_rq_entry * ipmi_req_entries;
+static struct ipmi_rq_entry * ipmi_req_entries_tail;
+static uint8_t bridge_possible = 0;
+
+static int ipmi_lan_send_packet(struct ipmi_intf * intf, uint8_t * data, int data_len);
+static struct ipmi_rs * ipmi_lan_recv_packet(struct ipmi_intf * intf);
+static struct ipmi_rs * ipmi_lan_poll_recv(struct ipmi_intf * intf);
+static int ipmi_lan_setup(struct ipmi_intf * intf);
+static int ipmi_lan_keepalive(struct ipmi_intf * intf);
+static struct ipmi_rs * ipmi_lan_recv_sol(struct ipmi_intf * intf);
+static struct ipmi_rs * ipmi_lan_send_sol(struct ipmi_intf * intf,
+					  struct ipmi_v2_payload * payload);
+static struct ipmi_rs * ipmi_lan_send_cmd(struct ipmi_intf * intf, struct ipmi_rq * req);
+static int ipmi_lan_send_rsp(struct ipmi_intf * intf, struct ipmi_rs * rsp);
+static int ipmi_lan_open(struct ipmi_intf * intf);
+static void ipmi_lan_close(struct ipmi_intf * intf);
+static int ipmi_lan_ping(struct ipmi_intf * intf);
+static void ipmi_lan_set_max_rq_data_size(struct ipmi_intf * intf, uint16_t size);
+static void ipmi_lan_set_max_rp_data_size(struct ipmi_intf * intf, uint16_t size);
+
+struct ipmi_intf ipmi_lan_intf = {
+	name:		"lan",
+	desc:		"IPMI v1.5 LAN Interface",
+	setup:		ipmi_lan_setup,
+	open:		ipmi_lan_open,
+	close:		ipmi_lan_close,
+	sendrecv:	ipmi_lan_send_cmd,
+	sendrsp:	ipmi_lan_send_rsp,
+	recv_sol:	ipmi_lan_recv_sol,
+	send_sol:	ipmi_lan_send_sol,
+	keepalive:	ipmi_lan_keepalive,
+	set_max_request_data_size: ipmi_lan_set_max_rq_data_size,
+	set_max_response_data_size: ipmi_lan_set_max_rp_data_size,
+	target_addr:	IPMI_BMC_SLAVE_ADDR,
+};
+
+static struct ipmi_rq_entry *
+ipmi_req_add_entry(struct ipmi_intf * intf, struct ipmi_rq * req, uint8_t req_seq)
+{
+	struct ipmi_rq_entry * e;
+
+	e = malloc(sizeof(struct ipmi_rq_entry));
+	if (e == NULL) {
+		lprintf(LOG_ERR, "ipmitool: malloc failure");
+		return NULL;
+	}
+
+	memset(e, 0, sizeof(struct ipmi_rq_entry));
+	memcpy(&e->req, req, sizeof(struct ipmi_rq));
+
+	e->intf = intf;
+	e->rq_seq = req_seq;
+
+	if (ipmi_req_entries == NULL)
+		ipmi_req_entries = e;
+	else
+		ipmi_req_entries_tail->next = e;
+
+	ipmi_req_entries_tail = e;
+	lprintf(LOG_DEBUG+3, "added list entry seq=0x%02x cmd=0x%02x",
+		e->rq_seq, e->req.msg.cmd);
+	return e;
+}
+
+static struct ipmi_rq_entry *
+ipmi_req_lookup_entry(uint8_t seq, uint8_t cmd)
+{
+	struct ipmi_rq_entry * e = ipmi_req_entries;
+	while (e && (e->rq_seq != seq || e->req.msg.cmd != cmd)) {
+		if (e->next == NULL || e == e->next)
+			return NULL;
+		e = e->next;
+	}
+	return e;
+}
+
+static void
+ipmi_req_remove_entry(uint8_t seq, uint8_t cmd)
+{
+	struct ipmi_rq_entry * p, * e, * saved_next_entry;
+
+	e = p = ipmi_req_entries;
+
+	while (e && (e->rq_seq != seq || e->req.msg.cmd != cmd)) {
+		p = e;
+		e = e->next;
+	}
+	if (e) {
+		lprintf(LOG_DEBUG+3, "removed list entry seq=0x%02x cmd=0x%02x",
+			seq, cmd);
+		saved_next_entry = e->next;
+		p->next = (p->next == e->next) ? NULL : e->next;
+		/* If entry being removed is first in list, fix up list head */
+		if (ipmi_req_entries == e) {
+			if (ipmi_req_entries != p)
+				ipmi_req_entries = p;
+			else
+				ipmi_req_entries = saved_next_entry;
+		}
+		/* If entry being removed is last in list, fix up list tail */
+		if (ipmi_req_entries_tail == e) {
+			if (ipmi_req_entries_tail != p)
+				ipmi_req_entries_tail = p;
+			else
+				ipmi_req_entries_tail = NULL;
+		}
+		if (e->msg_data) {
+			free(e->msg_data);
+			e->msg_data = NULL;
+		}
+		free(e);
+		e = NULL;
+	}
+}
+
+static void
+ipmi_req_clear_entries(void)
+{
+	struct ipmi_rq_entry * p, * e;
+
+	e = ipmi_req_entries;
+	while (e) {
+		lprintf(LOG_DEBUG+3, "cleared list entry seq=0x%02x cmd=0x%02x",
+			e->rq_seq, e->req.msg.cmd);
+		if (e->next != NULL) {
+			p = e->next;
+			free(e);
+			e = p;
+		} else {
+			free(e);
+			e = NULL;
+			break;
+		}
+	}
+	ipmi_req_entries = NULL;
+}
+
+static int
+get_random(void *data, int len)
+{
+	int fd = open("/dev/urandom", O_RDONLY);
+	int rv;
+
+	if (fd < 0)
+		return errno;
+	if (len < 0) {
+		close(fd);
+		return errno; /* XXX: ORLY? */
+	}
+
+	rv = read(fd, data, len);
+
+	close(fd);
+	return rv;
+}
+
+static int
+ipmi_lan_send_packet(struct ipmi_intf * intf, uint8_t * data, int data_len)
+{
+	if (verbose > 2)
+		printbuf(data, data_len, "send_packet");
+
+	return send(intf->fd, data, data_len, 0);
+}
+
+static struct ipmi_rs *
+ipmi_lan_recv_packet(struct ipmi_intf * intf)
+{
+	static struct ipmi_rs rsp;
+	fd_set read_set, err_set;
+	struct timeval tmout;
+	int ret;
+
+	FD_ZERO(&read_set);
+	FD_SET(intf->fd, &read_set);
+
+	FD_ZERO(&err_set);
+	FD_SET(intf->fd, &err_set);
+
+	tmout.tv_sec = intf->session->timeout;
+	tmout.tv_usec = 0;
+
+	ret = select(intf->fd + 1, &read_set, NULL, &err_set, &tmout);
+	if (ret < 0 || FD_ISSET(intf->fd, &err_set) || !FD_ISSET(intf->fd, &read_set))
+		return NULL;
+
+	/* the first read may return ECONNREFUSED because the rmcp ping
+	 * packet--sent to UDP port 623--will be processed by both the
+	 * BMC and the OS.
+	 *
+	 * The problem with this is that the ECONNREFUSED takes
+	 * priority over any other received datagram; that means that
+	 * the Connection Refused shows up _before_ the response packet,
+	 * regardless of the order they were sent out.  (unless the
+	 * response is read before the connection refused is returned)
+	 */
+	ret = recv(intf->fd, &rsp.data, IPMI_BUF_SIZE, 0);
+
+	if (ret < 0) {
+		FD_ZERO(&read_set);
+		FD_SET(intf->fd, &read_set);
+
+		FD_ZERO(&err_set);
+		FD_SET(intf->fd, &err_set);
+
+		tmout.tv_sec = intf->session->timeout;
+		tmout.tv_usec = 0;
+
+		ret = select(intf->fd + 1, &read_set, NULL, &err_set, &tmout);
+		if (ret < 0 || FD_ISSET(intf->fd, &err_set) || !FD_ISSET(intf->fd, &read_set))
+			return NULL;
+
+		ret = recv(intf->fd, &rsp.data, IPMI_BUF_SIZE, 0);
+		if (ret < 0)
+			return NULL;
+	}
+
+	if (ret == 0)
+		return NULL;
+
+	rsp.data[ret] = '\0';
+	rsp.data_len = ret;
+
+	if (verbose > 2)
+		printbuf(rsp.data, rsp.data_len, "recv_packet");
+
+	return &rsp;
+}
+
+/*
+ * parse response RMCP "pong" packet
+ *
+ * return -1 if ping response not received
+ * returns 0 if IPMI is NOT supported
+ * returns 1 if IPMI is supported
+ *
+ * udp.source	= 0x026f	// RMCP_UDP_PORT
+ * udp.dest	= ?		// udp.source from rmcp-ping
+ * udp.len	= ?
+ * udp.check	= ?
+ * rmcp.ver	= 0x06		// RMCP Version 1.0
+ * rmcp.__res	= 0x00		// RESERVED
+ * rmcp.seq	= 0xff		// no RMCP ACK
+ * rmcp.class	= 0x06		// RMCP_CLASS_ASF
+ * asf.iana	= 0x000011be	// ASF_RMCP_IANA
+ * asf.type	= 0x40		// ASF_TYPE_PONG
+ * asf.tag	= ?		// asf.tag from rmcp-ping
+ * asf.__res	= 0x00		// RESERVED
+ * asf.len	= 0x10		// 16 bytes
+ * asf.data[3:0]= 0x000011be	// IANA# = RMCP_ASF_IANA if no OEM
+ * asf.data[7:4]= 0x00000000	// OEM-defined (not for IPMI)
+ * asf.data[8]	= 0x81		// supported entities
+ * 				// [7]=IPMI [6:4]=RES [3:0]=ASF_1.0
+ * asf.data[9]	= 0x00		// supported interactions (reserved)
+ * asf.data[f:a]= 0x000000000000
+ */
+static int
+ipmi_handle_pong(struct ipmi_intf * intf, struct ipmi_rs * rsp)
+{
+	struct rmcp_pong * pong;
+
+	if (rsp == NULL)
+		return -1;
+
+	pong = (struct rmcp_pong *)rsp->data;
+
+	lprintf(LOG_DEBUG,
+		"Received IPMI/RMCP response packet: \n"
+		"  IPMI%s Supported\n"
+		"  ASF Version %s\n"
+		"  RMCP Version %s\n"
+		"  RMCP Sequence %d\n"
+		"  IANA Enterprise %ld\n",
+		(pong->sup_entities & 0x80) ? "" : " NOT",
+		(pong->sup_entities & 0x01) ? "1.0" : "unknown",
+		(pong->rmcp.ver == 6) ? "1.0" : "unknown",
+		pong->rmcp.seq,
+		ntohl(pong->iana));
+
+	return (pong->sup_entities & 0x80) ? 1 : 0;
+}
+
+/* build and send RMCP presence ping packet
+ *
+ * RMCP ping
+ *
+ * udp.source	= ?
+ * udp.dest	= 0x026f	// RMCP_UDP_PORT
+ * udp.len	= ?
+ * udp.check	= ?
+ * rmcp.ver	= 0x06		// RMCP Version 1.0
+ * rmcp.__res	= 0x00		// RESERVED
+ * rmcp.seq	= 0xff		// no RMCP ACK
+ * rmcp.class	= 0x06		// RMCP_CLASS_ASF
+ * asf.iana	= 0x000011be	// ASF_RMCP_IANA
+ * asf.type	= 0x80		// ASF_TYPE_PING
+ * asf.tag	= ?		// ASF sequence number
+ * asf.__res	= 0x00		// RESERVED
+ * asf.len	= 0x00
+ *
+ */
+static int
+ipmi_lan_ping(struct ipmi_intf * intf)
+{
+	struct asf_hdr asf_ping = {
+		.iana	= htonl(ASF_RMCP_IANA),
+		.type	= ASF_TYPE_PING,
+	};
+	struct rmcp_hdr rmcp_ping = {
+		.ver	= RMCP_VERSION_1,
+		.class	= RMCP_CLASS_ASF,
+		.seq	= 0xff,
+	};
+	uint8_t * data;
+	int len = sizeof(rmcp_ping) + sizeof(asf_ping);
+	int rv;
+
+	data = malloc(len);
+	if (data == NULL) {
+		lprintf(LOG_ERR, "ipmitool: malloc failure");
+		return -1;
+	}
+	memset(data, 0, len);
+	memcpy(data, &rmcp_ping, sizeof(rmcp_ping));
+	memcpy(data+sizeof(rmcp_ping), &asf_ping, sizeof(asf_ping));
+
+	lprintf(LOG_DEBUG, "Sending IPMI/RMCP presence ping packet");
+
+	rv = ipmi_lan_send_packet(intf, data, len);
+
+	free(data);
+	data = NULL;
+
+	if (rv < 0) {
+		lprintf(LOG_ERR, "Unable to send IPMI presence ping packet");
+		return -1;
+	}
+
+	if (ipmi_lan_poll_recv(intf) == 0)
+		return 0;
+
+	return 1;
+}
+
+/*
+ * The "thump" functions are used to send an extra packet following each
+ * request message.  This may kick-start some BMCs that get confused with
+ * bad passwords or operate poorly under heavy network load.
+ */
+static void
+ipmi_lan_thump_first(struct ipmi_intf * intf)
+{
+	/* is this random data? */
+	uint8_t data[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+				   0x07, 0x20, 0x18, 0xc8, 0xc2, 0x01, 0x01, 0x3c };
+	ipmi_lan_send_packet(intf, data, 16);
+}
+
+static void
+ipmi_lan_thump(struct ipmi_intf * intf)
+{
+	uint8_t data[10] = "thump";
+	ipmi_lan_send_packet(intf, data, 10);
+}
+
+static struct ipmi_rs *
+ipmi_lan_poll_recv(struct ipmi_intf * intf)
+{
+	struct rmcp_hdr rmcp_rsp;
+	struct ipmi_rs * rsp;
+	struct ipmi_rq_entry * entry;
+	int x=0, rv;
+	uint8_t our_address = intf->my_addr;
+
+	if (our_address == 0)
+		our_address = IPMI_BMC_SLAVE_ADDR;
+
+	rsp = ipmi_lan_recv_packet(intf);
+
+	while (rsp != NULL) {
+
+		/* parse response headers */
+		memcpy(&rmcp_rsp, rsp->data, 4);
+
+		switch (rmcp_rsp.class) {
+		case RMCP_CLASS_ASF:
+			/* ping response packet */
+			rv = ipmi_handle_pong(intf, rsp);
+			return (rv <= 0) ? NULL : rsp;
+		case RMCP_CLASS_IPMI:
+			/* handled by rest of function */
+			break;
+		default:
+			lprintf(LOG_DEBUG, "Invalid RMCP class: %x",
+				rmcp_rsp.class);
+			rsp = ipmi_lan_recv_packet(intf);
+			continue;
+		}
+
+		x = 4;
+		rsp->session.authtype = rsp->data[x++];
+		memcpy(&rsp->session.seq, rsp->data+x, 4);
+		x += 4;
+		memcpy(&rsp->session.id, rsp->data+x, 4);
+		x += 4;
+
+		if (rsp->session.id == (intf->session->session_id + 0x10000000)) {
+			/* With SOL, authtype is always NONE, so we have no authcode */
+			rsp->session.payloadtype = IPMI_PAYLOAD_TYPE_SOL;
+	
+			rsp->session.msglen = rsp->data[x++];
+			
+			rsp->payload.sol_packet.packet_sequence_number =
+				rsp->data[x++] & 0x0F;
+
+			rsp->payload.sol_packet.acked_packet_number =
+				rsp->data[x++] & 0x0F;
+
+			rsp->payload.sol_packet.accepted_character_count =
+				rsp->data[x++];
+
+			rsp->payload.sol_packet.is_nack =
+				rsp->data[x] & 0x40;
+
+			rsp->payload.sol_packet.transfer_unavailable =
+				rsp->data[x] & 0x20;
+
+			rsp->payload.sol_packet.sol_inactive = 
+				rsp->data[x] & 0x10;
+
+			rsp->payload.sol_packet.transmit_overrun =
+				rsp->data[x] & 0x08;
+	
+			rsp->payload.sol_packet.break_detected =
+				rsp->data[x++] & 0x04;
+
+			x++; /* On ISOL there's and additional fifth byte before the data starts */
+	
+			lprintf(LOG_DEBUG, "SOL sequence number     : 0x%02x",
+				rsp->payload.sol_packet.packet_sequence_number);
+
+			lprintf(LOG_DEBUG, "SOL acked packet        : 0x%02x",
+				rsp->payload.sol_packet.acked_packet_number);
+			
+			lprintf(LOG_DEBUG, "SOL accepted char count : 0x%02x",
+				rsp->payload.sol_packet.accepted_character_count);
+			
+			lprintf(LOG_DEBUG, "SOL is nack             : %s",
+				rsp->payload.sol_packet.is_nack? "true" : "false");
+			
+			lprintf(LOG_DEBUG, "SOL xfer unavailable    : %s",
+				rsp->payload.sol_packet.transfer_unavailable? "true" : "false");
+			
+			lprintf(LOG_DEBUG, "SOL inactive            : %s",
+				rsp->payload.sol_packet.sol_inactive? "true" : "false");
+			
+			lprintf(LOG_DEBUG, "SOL transmit overrun    : %s",
+				rsp->payload.sol_packet.transmit_overrun? "true" : "false");
+			
+			lprintf(LOG_DEBUG, "SOL break detected      : %s",
+				rsp->payload.sol_packet.break_detected? "true" : "false");
+		}
+		else
+		{
+			/* Standard IPMI 1.5 packet */
+			rsp->session.payloadtype = IPMI_PAYLOAD_TYPE_IPMI;
+			if (intf->session->active && (rsp->session.authtype || intf->session->authtype))
+				x += 16;
+
+			rsp->session.msglen = rsp->data[x++];
+			rsp->payload.ipmi_response.rq_addr = rsp->data[x++];
+			rsp->payload.ipmi_response.netfn   = rsp->data[x] >> 2;
+			rsp->payload.ipmi_response.rq_lun  = rsp->data[x++] & 0x3;
+			x++;		/* checksum */
+			rsp->payload.ipmi_response.rs_addr = rsp->data[x++];
+			rsp->payload.ipmi_response.rq_seq  = rsp->data[x] >> 2;
+			rsp->payload.ipmi_response.rs_lun  = rsp->data[x++] & 0x3;
+			rsp->payload.ipmi_response.cmd     = rsp->data[x++];
+			rsp->ccode          = rsp->data[x++];
+			
+			if (verbose > 2)
+				printbuf(rsp->data, rsp->data_len, "ipmi message header");
+			
+			lprintf(LOG_DEBUG+1, "<< IPMI Response Session Header");
+			lprintf(LOG_DEBUG+1, "<<   Authtype   : %s",
+				val2str(rsp->session.authtype, ipmi_authtype_session_vals));
+			lprintf(LOG_DEBUG+1, "<<   Sequence   : 0x%08lx",
+				(long)rsp->session.seq);
+			lprintf(LOG_DEBUG+1, "<<   Session ID : 0x%08lx",
+				(long)rsp->session.id);
+			lprintf(LOG_DEBUG+1, "<< IPMI Response Message Header");
+			lprintf(LOG_DEBUG+1, "<<   Rq Addr    : %02x",
+				rsp->payload.ipmi_response.rq_addr);
+			lprintf(LOG_DEBUG+1, "<<   NetFn      : %02x",
+				rsp->payload.ipmi_response.netfn);
+			lprintf(LOG_DEBUG+1, "<<   Rq LUN     : %01x",
+				rsp->payload.ipmi_response.rq_lun);
+			lprintf(LOG_DEBUG+1, "<<   Rs Addr    : %02x",
+				rsp->payload.ipmi_response.rs_addr);
+			lprintf(LOG_DEBUG+1, "<<   Rq Seq     : %02x",
+				rsp->payload.ipmi_response.rq_seq);
+			lprintf(LOG_DEBUG+1, "<<   Rs Lun     : %01x",
+				rsp->payload.ipmi_response.rs_lun);
+			lprintf(LOG_DEBUG+1, "<<   Command    : %02x",
+				rsp->payload.ipmi_response.cmd);
+			lprintf(LOG_DEBUG+1, "<<   Compl Code : 0x%02x",
+				rsp->ccode);
+			
+			/* now see if we have outstanding entry in request list */
+			entry = ipmi_req_lookup_entry(rsp->payload.ipmi_response.rq_seq,
+						      rsp->payload.ipmi_response.cmd);
+			if (entry) {
+				lprintf(LOG_DEBUG+2, "IPMI Request Match found");
+				if ((intf->target_addr != our_address) && bridge_possible) {
+					if ((rsp->data_len) && (rsp->payload.ipmi_response.netfn == 7) &&
+					    (rsp->payload.ipmi_response.cmd != 0x34)) {
+						if (verbose > 2)
+							printbuf(&rsp->data[x], rsp->data_len-x,
+								 "bridge command response");
+					}
+					/* bridged command: lose extra header */
+					if (entry->bridging_level &&
+					    rsp->payload.ipmi_response.netfn == 7 &&
+					    rsp->payload.ipmi_response.cmd == 0x34) {
+						entry->bridging_level--;
+						if (rsp->data_len - x - 1 == 0) {
+							rsp = !rsp->ccode ? ipmi_lan_recv_packet(intf) : NULL;
+							if (!entry->bridging_level)
+								entry->req.msg.cmd = entry->req.msg.target_cmd;
+							if (rsp == NULL) {
+								ipmi_req_remove_entry(entry->rq_seq, entry->req.msg.cmd);
+							}
+							continue;
+						} else {
+							/* The bridged answer data are inside the incoming packet */
+							memmove(rsp->data + x - 7,
+								rsp->data + x, 
+								rsp->data_len - x - 1);
+							rsp->data[x - 8] -= 8;
+							rsp->data_len -= 8;
+							entry->rq_seq = rsp->data[x - 3] >> 2;
+							if (!entry->bridging_level)
+								entry->req.msg.cmd = entry->req.msg.target_cmd;
+							continue;
+						}
+					} else {
+						//x += sizeof(rsp->payload.ipmi_response);
+						if (rsp->data[x-1] != 0)
+							lprintf(LOG_DEBUG, "WARNING: Bridged "
+								"cmd ccode = 0x%02x",
+								rsp->data[x-1]);
+					}
+				}
+				ipmi_req_remove_entry(rsp->payload.ipmi_response.rq_seq,
+						      rsp->payload.ipmi_response.cmd);
+			} else {
+				lprintf(LOG_INFO, "IPMI Request Match NOT FOUND");
+				rsp = ipmi_lan_recv_packet(intf);
+				continue;
+			}
+		}
+
+		break;
+	}
+
+	/* shift response data to start of array */
+	if (rsp && rsp->data_len > x) {
+		rsp->data_len -= x;
+		if (rsp->session.payloadtype == IPMI_PAYLOAD_TYPE_IPMI)
+			rsp->data_len -= 1; /* We don't want the checksum */
+		memmove(rsp->data, rsp->data + x, rsp->data_len);
+		memset(rsp->data + rsp->data_len, 0, IPMI_BUF_SIZE - rsp->data_len);
+	}
+
+	return rsp;
+}
+
+/*
+ * IPMI LAN Request Message Format
+ * +--------------------+
+ * |  rmcp.ver          | 4 bytes
+ * |  rmcp.__reserved   |
+ * |  rmcp.seq          |
+ * |  rmcp.class        |
+ * +--------------------+
+ * |  session.authtype  | 9 bytes
+ * |  session.seq       |
+ * |  session.id        |
+ * +--------------------+
+ * | [session.authcode] | 16 bytes (AUTHTYPE != none)
+ * +--------------------+
+ * |  message length    | 1 byte
+ * +--------------------+
+ * |  message.rs_addr   | 6 bytes
+ * |  message.netfn_lun |
+ * |  message.checksum  |
+ * |  message.rq_addr   |
+ * |  message.rq_seq    |
+ * |  message.cmd       |
+ * +--------------------+
+ * | [request data]     | data_len bytes
+ * +--------------------+
+ * |  checksum          | 1 byte
+ * +--------------------+
+ */
+static struct ipmi_rq_entry *
+ipmi_lan_build_cmd(struct ipmi_intf * intf, struct ipmi_rq * req, int isRetry)
+{
+	struct rmcp_hdr rmcp = {
+		.ver		= RMCP_VERSION_1,
+		.class		= RMCP_CLASS_IPMI,
+		.seq		= 0xff,
+	};
+	uint8_t * msg, * temp;
+	int cs, mp, tmp;
+	int ap = 0;
+	int len = 0;
+	int cs2 = 0, cs3 = 0;
+	struct ipmi_rq_entry * entry;
+	struct ipmi_session * s = intf->session;
+	static int curr_seq = 0;
+	uint8_t our_address = intf->my_addr;
+
+	if (our_address == 0)
+		our_address = IPMI_BMC_SLAVE_ADDR;
+
+	if (isRetry == 0)
+		curr_seq++;
+
+	if (curr_seq >= 64)
+		curr_seq = 0;
+
+	// Bug in the existing code where it keeps on adding same command/seq pair 
+	// in the lookup entry list.
+	// Check if we have cmd,seq pair already in our list. As we are not changing 
+	// the seq number we have to re-use the node which has existing
+	// command and sequence number. If we add then we will have redundant node with
+	// same cmd,seq pair
+	entry = ipmi_req_lookup_entry(curr_seq, req->msg.cmd);
+	if (entry)
+	{
+		// This indicates that we have already same command and seq in list
+		// No need to add once again and we will re-use the existing node.
+		// Only thing we have to do is clear the msg_data as we create
+		// a new one below in the code for it.
+		if (entry->msg_data) {
+			free(entry->msg_data);
+			entry->msg_data = NULL;
+		}
+	}
+	else
+	{
+		// We dont have this request in the list so we can add it 
+		// to the list
+		entry = ipmi_req_add_entry(intf, req, curr_seq);
+		if (entry == NULL)
+			return NULL;
+	}
+ 
+	len = req->msg.data_len + 29;
+	if (s->active && s->authtype)
+		len += 16;
+	if (intf->transit_addr != intf->my_addr && intf->transit_addr != 0)
+		len += 8;
+	msg = malloc(len);
+	if (msg == NULL) {
+		lprintf(LOG_ERR, "ipmitool: malloc failure");
+		return NULL;
+	}
+	memset(msg, 0, len);
+
+	/* rmcp header */
+	memcpy(msg, &rmcp, sizeof(rmcp));
+	len = sizeof(rmcp);
+
+	/* ipmi session header */
+	msg[len++] = s->active ? s->authtype : 0;
+
+	msg[len++] = s->in_seq & 0xff;
+	msg[len++] = (s->in_seq >> 8) & 0xff;
+	msg[len++] = (s->in_seq >> 16) & 0xff;
+	msg[len++] = (s->in_seq >> 24) & 0xff;
+	memcpy(msg+len, &s->session_id, 4);
+	len += 4;
+
+	/* ipmi session authcode */
+	if (s->active && s->authtype) {
+		ap = len;
+		memcpy(msg+len, s->authcode, 16);
+		len += 16;
+	}
+
+	/* message length */
+	if ((intf->target_addr == our_address) || !bridge_possible) {
+		entry->bridging_level = 0;
+		msg[len++] = req->msg.data_len + 7;
+		cs = mp = len;
+	} else {
+		/* bridged request: encapsulate w/in Send Message */
+		entry->bridging_level = 1;
+		msg[len++] = req->msg.data_len + 15 +
+		  (intf->transit_addr != intf->my_addr && intf->transit_addr != 0 ? 8 : 0);
+		cs = mp = len;
+		msg[len++] = IPMI_BMC_SLAVE_ADDR;
+		msg[len++] = IPMI_NETFN_APP << 2;
+		tmp = len - cs;
+		msg[len++] = ipmi_csum(msg+cs, tmp);
+		cs2 = len;
+		msg[len++] = IPMI_REMOTE_SWID;
+		msg[len++] = curr_seq << 2;
+		msg[len++] = 0x34;			/* Send Message rqst */
+		entry->req.msg.target_cmd = entry->req.msg.cmd;	/* Save target command */
+		entry->req.msg.cmd = 0x34;		/* (fixup request entry) */
+
+		if (intf->transit_addr == intf->my_addr || intf->transit_addr == 0) {
+		        msg[len++] = (0x40|intf->target_channel); /* Track request*/
+		} else {
+		        entry->bridging_level++;
+               		msg[len++] = (0x40|intf->transit_channel); /* Track request*/
+			cs = len;
+			msg[len++] = intf->transit_addr;
+			msg[len++] = IPMI_NETFN_APP << 2;
+			tmp = len - cs;
+			msg[len++] = ipmi_csum(msg+cs, tmp);
+			cs3 = len;
+			msg[len++] = intf->my_addr;
+			msg[len++] = curr_seq << 2;
+			msg[len++] = 0x34;			/* Send Message rqst */
+			msg[len++] = (0x40|intf->target_channel); /* Track request */
+		}
+		cs = len;
+	}
+
+	/* ipmi message header */
+	msg[len++] = intf->target_addr;
+	msg[len++] = req->msg.netfn << 2 | (req->msg.lun & 3);
+	tmp = len - cs;
+	msg[len++] = ipmi_csum(msg+cs, tmp);
+	cs = len;
+
+	if (!entry->bridging_level)
+		msg[len++] = IPMI_REMOTE_SWID;
+   /* Bridged message */ 
+	else if (entry->bridging_level) 
+		msg[len++] = intf->my_addr;
+   
+	entry->rq_seq = curr_seq;
+	msg[len++] = entry->rq_seq << 2;
+	msg[len++] = req->msg.cmd;
+
+	lprintf(LOG_DEBUG+1, ">> IPMI Request Session Header (level %d)", entry->bridging_level);
+	lprintf(LOG_DEBUG+1, ">>   Authtype   : %s",
+	       val2str(s->authtype, ipmi_authtype_session_vals));
+	lprintf(LOG_DEBUG+1, ">>   Sequence   : 0x%08lx", (long)s->in_seq);
+	lprintf(LOG_DEBUG+1, ">>   Session ID : 0x%08lx", (long)s->session_id);
+	lprintf(LOG_DEBUG+1, ">> IPMI Request Message Header");
+	lprintf(LOG_DEBUG+1, ">>   Rs Addr    : %02x", intf->target_addr);
+	lprintf(LOG_DEBUG+1, ">>   NetFn      : %02x", req->msg.netfn);
+	lprintf(LOG_DEBUG+1, ">>   Rs LUN     : %01x", 0);
+	lprintf(LOG_DEBUG+1, ">>   Rq Addr    : %02x", IPMI_REMOTE_SWID);
+	lprintf(LOG_DEBUG+1, ">>   Rq Seq     : %02x", entry->rq_seq);
+	lprintf(LOG_DEBUG+1, ">>   Rq Lun     : %01x", 0);
+	lprintf(LOG_DEBUG+1, ">>   Command    : %02x", req->msg.cmd);
+
+	/* message data */
+	if (req->msg.data_len) {
+ 		memcpy(msg+len, req->msg.data, req->msg.data_len);
+		len += req->msg.data_len;
+	}
+
+	/* second checksum */
+	tmp = len - cs;
+	msg[len++] = ipmi_csum(msg+cs, tmp);
+
+	/* bridged request: 2nd checksum */
+	if (entry->bridging_level) {
+		if (intf->transit_addr != intf->my_addr && intf->transit_addr != 0) {
+			tmp = len - cs3;
+			msg[len++] = ipmi_csum(msg+cs3, tmp);
+		}
+		tmp = len - cs2;
+		msg[len++] = ipmi_csum(msg+cs2, tmp);
+	}
+
+	if (s->active) {
+		/*
+		 * s->authcode is already copied to msg+ap but some
+		 * authtypes require portions of the ipmi message to
+		 * create the authcode so they must be done last.
+		 */
+		switch (s->authtype) {
+		case IPMI_SESSION_AUTHTYPE_MD5:
+			temp = ipmi_auth_md5(s, msg+mp, msg[mp-1]);
+			memcpy(msg+ap, temp, 16);
+			break;
+		case IPMI_SESSION_AUTHTYPE_MD2:
+			temp = ipmi_auth_md2(s, msg+mp, msg[mp-1]);
+			memcpy(msg+ap, temp, 16);
+			break;
+		}
+	}
+
+	if (s->in_seq) {
+		s->in_seq++;
+		if (s->in_seq == 0)
+			s->in_seq++;
+	}
+
+	entry->msg_len = len;
+	entry->msg_data = msg;
+
+	return entry;
+}
+
+static struct ipmi_rs *
+ipmi_lan_send_cmd(struct ipmi_intf * intf, struct ipmi_rq * req)
+{
+	struct ipmi_rq_entry * entry;
+	struct ipmi_rs * rsp = NULL;
+	int try = 0;
+	int isRetry = 0;
+
+	lprintf(LOG_DEBUG, "ipmi_lan_send_cmd:opened=[%d], open=[%d]",
+		intf->opened, intf->open);
+
+	if (intf->opened == 0 && intf->open != NULL) {
+		if (intf->open(intf) < 0) {
+			lprintf(LOG_DEBUG, "Failed to open LAN interface");
+			return NULL;
+		}
+		lprintf(LOG_DEBUG, "\topened=[%d], open=[%d]",
+			intf->opened, intf->open);
+	}
+
+	for (;;) {
+		isRetry = ( try > 0 ) ? 1 : 0;
+
+		entry = ipmi_lan_build_cmd(intf, req, isRetry);
+		if (entry == NULL) {
+			lprintf(LOG_ERR, "Aborting send command, unable to build");
+			return NULL;
+		}
+
+		if (ipmi_lan_send_packet(intf, entry->msg_data, entry->msg_len) < 0) {
+			try++;
+			usleep(5000);
+			ipmi_req_remove_entry(entry->rq_seq, entry->req.msg.target_cmd);	
+			continue;
+		}
+
+		/* if we are set to noanswer we do not expect response */
+		if (intf->noanswer)
+			break;
+
+		if (ipmi_oem_active(intf, "intelwv2"))
+			ipmi_lan_thump(intf);
+
+		usleep(100);
+
+		rsp = ipmi_lan_poll_recv(intf);
+
+		/* Duplicate Request ccode most likely indicates a response to
+		   a previous retry. Ignore and keep polling. */
+		if((rsp != NULL) && (rsp->ccode == 0xcf)) {
+			rsp = NULL;
+			rsp = ipmi_lan_poll_recv(intf);
+		}
+		
+		if (rsp)
+			break;
+
+		usleep(5000);
+		if (++try >= intf->session->retry) {
+			lprintf(LOG_DEBUG, "  No response from remote controller");
+			break;
+		}
+	}
+
+	// We need to cleanup the existing entries from the list. Because if we 
+	// keep it and then when we send the new command and if the response is for
+	// old command it still matches it and then returns success.
+	// This is the corner case where the remote controller responds very slowly.
+	//
+	// Example: We have to send command 23 and 2d.
+	// If we send command,seq as 23,10 and if we dont get any response it will 
+	// retry 4 times with 23,10 and then come out here and indicate that there is no
+	// reponse from the remote controller and will send the next command for 
+	// ie 2d,11. And if the BMC is slow to respond and returns 23,10 then it 
+	// will match it in the list and will take response of command 23 as response 
+	// for command 2d and return success. So ideally when retries are done and 
+	// are out of this function we should be clearing the list to be safe so that
+	// we dont match the old response with new request.
+	//          [23, 10] --> BMC
+	//          [23, 10] --> BMC
+	//          [23, 10] --> BMC
+	//          [23, 10] --> BMC
+	//          [2D, 11] --> BMC
+	//                   <-- [23, 10]
+	//  here if we maintain 23,10 in the list then it will get matched and consider
+	//  23 response as response for 2D.   
+	ipmi_req_clear_entries();
+ 
+	return rsp;
+}
+
+static uint8_t *
+ipmi_lan_build_rsp(struct ipmi_intf * intf, struct ipmi_rs * rsp, int * llen)
+{
+	struct rmcp_hdr rmcp = {
+		.ver	= RMCP_VERSION_1,
+		.class	= RMCP_CLASS_IPMI,
+		.seq	= 0xff,
+	};
+	struct ipmi_session * s = intf->session;
+	int cs, mp, ap = 0, tmp;
+	int len;
+	uint8_t * msg;
+
+	len = rsp->data_len + 22;
+	if (s->active)
+		len += 16;
+
+	msg = malloc(len);
+	if (msg == NULL) {
+		lprintf(LOG_ERR, "ipmitool: malloc failure");
+		return NULL;
+	}
+	memset(msg, 0, len);
+
+	/* rmcp header */
+	memcpy(msg, &rmcp, 4);
+	len = sizeof(rmcp);
+
+	/* ipmi session header */
+	msg[len++] = s->active ? s->authtype : 0;
+
+	if (s->in_seq) {
+		s->in_seq++;
+		if (s->in_seq == 0)
+			s->in_seq++;
+	}
+	memcpy(msg+len, &s->in_seq, 4);
+	len += 4;
+	memcpy(msg+len, &s->session_id, 4);
+	len += 4;
+
+	/* session authcode, if session active and authtype is not none */
+	if (s->active && s->authtype) {
+		ap = len;
+		memcpy(msg+len, s->authcode, 16);
+		len += 16;
+	}
+
+	/* message length */
+	msg[len++] = rsp->data_len + 8;
+
+	/* message header */
+	cs = mp = len;
+	msg[len++] = IPMI_REMOTE_SWID;
+	msg[len++] = rsp->msg.netfn << 2;
+	tmp = len - cs;
+	msg[len++] = ipmi_csum(msg+cs, tmp);
+	cs = len;
+	msg[len++] = IPMI_BMC_SLAVE_ADDR;
+	msg[len++] = (rsp->msg.seq << 2) | (rsp->msg.lun & 3);
+	msg[len++] = rsp->msg.cmd;
+
+	/* completion code */
+	msg[len++] = rsp->ccode;
+
+	/* message data */
+	if (rsp->data_len) {
+		memcpy(msg+len, rsp->data, rsp->data_len);
+		len += rsp->data_len;
+	}
+
+	/* second checksum */
+	tmp = len - cs;
+	msg[len++] = ipmi_csum(msg+cs, tmp);
+
+	if (s->active) {
+		uint8_t * d;
+		switch (s->authtype) {
+		case IPMI_SESSION_AUTHTYPE_MD5:
+			d = ipmi_auth_md5(s, msg+mp, msg[mp-1]);
+			memcpy(msg+ap, d, 16);
+			break;
+		case IPMI_SESSION_AUTHTYPE_MD2:
+			d = ipmi_auth_md2(s, msg+mp, msg[mp-1]);
+			memcpy(msg+ap, d, 16);
+			break;
+		}
+	}
+
+	*llen = len;
+	return msg;
+}
+
+static int
+ipmi_lan_send_rsp(struct ipmi_intf * intf, struct ipmi_rs * rsp)
+{
+	uint8_t * msg;
+	int len = 0;
+	int rv;
+
+	msg = ipmi_lan_build_rsp(intf, rsp, &len);
+	if (len <= 0 || msg == NULL) {
+		lprintf(LOG_ERR, "Invalid response packet");
+		if (msg != NULL) {
+			free(msg);
+			msg = NULL;
+		}
+		return -1;
+	}
+
+	rv = sendto(intf->fd, msg, len, 0,
+		    (struct sockaddr *)&intf->session->addr,
+		    intf->session->addrlen);
+	if (rv < 0) {
+		lprintf(LOG_ERR, "Packet send failed");
+		if (msg != NULL) {
+			free(msg);
+			msg = NULL;
+		}
+		return -1;
+	}
+
+	if (msg != NULL) {
+		free(msg);
+		msg = NULL;
+	}
+	return 0;
+}
+
+/*
+ * IPMI SOL Payload Format
+ * +--------------------+
+ * |  rmcp.ver          | 4 bytes
+ * |  rmcp.__reserved   |
+ * |  rmcp.seq          |
+ * |  rmcp.class        |
+ * +--------------------+
+ * |  session.authtype  | 9 bytes
+ * |  session.seq       |
+ * |  session.id        |
+ * +--------------------+
+ * |  message length    | 1 byte
+ * +--------------------+
+ * |  sol.seq           | 5 bytes
+ * |  sol.ack_seq       |
+ * |  sol.acc_count     |
+ * |  sol.control       |
+ * |  sol.__reserved    |
+ * +--------------------+
+ * | [request data]     | data_len bytes
+ * +--------------------+
+ */
+uint8_t * ipmi_lan_build_sol_msg(struct ipmi_intf * intf,
+				 struct ipmi_v2_payload * payload,
+				 int * llen)
+{
+	struct rmcp_hdr rmcp = {
+		.ver		= RMCP_VERSION_1,
+		.class		= RMCP_CLASS_IPMI,
+		.seq		= 0xff,
+	};
+	struct ipmi_session * session = intf->session;
+
+	/* msg will hold the entire message to be sent */
+	uint8_t * msg;
+
+	int len = 0;
+
+	len =	sizeof(rmcp)                                 +  // RMCP Header (4)
+		10                                           +  // IPMI Session Header
+		5                                            +  // SOL header
+		payload->payload.sol_packet.character_count;    // The actual payload
+
+	msg = malloc(len);
+	if (msg == NULL) {
+		lprintf(LOG_ERR, "ipmitool: malloc failure");
+		return NULL;
+	}
+	memset(msg, 0, len);
+
+	/* rmcp header */
+	memcpy(msg, &rmcp, sizeof(rmcp));
+	len = sizeof(rmcp);
+
+	/* ipmi session header */
+	msg[len++] = 0; /* SOL is always authtype = NONE */
+	msg[len++] = session->in_seq & 0xff;
+	msg[len++] = (session->in_seq >> 8) & 0xff;
+	msg[len++] = (session->in_seq >> 16) & 0xff;
+	msg[len++] = (session->in_seq >> 24) & 0xff;
+
+	msg[len++] = session->session_id & 0xff;
+	msg[len++] = (session->session_id >> 8) & 0xff;
+	msg[len++] = (session->session_id >> 16) & 0xff;
+	msg[len++] = ((session->session_id >> 24) + 0x10) & 0xff; /* Add 0x10 to MSB for SOL */
+
+	msg[len++] = payload->payload.sol_packet.character_count + 5;
+	
+	/* sol header */
+	msg[len++] = payload->payload.sol_packet.packet_sequence_number;
+	msg[len++] = payload->payload.sol_packet.acked_packet_number;
+	msg[len++] = payload->payload.sol_packet.accepted_character_count;
+	msg[len]    = payload->payload.sol_packet.is_nack           ? 0x40 : 0;
+	msg[len]   |= payload->payload.sol_packet.assert_ring_wor   ? 0x20 : 0;
+	msg[len]   |= payload->payload.sol_packet.generate_break    ? 0x10 : 0;
+	msg[len]   |= payload->payload.sol_packet.deassert_cts      ? 0x08 : 0;
+	msg[len]   |= payload->payload.sol_packet.deassert_dcd_dsr  ? 0x04 : 0;
+	msg[len]   |= payload->payload.sol_packet.flush_inbound     ? 0x02 : 0;
+	msg[len++] |= payload->payload.sol_packet.flush_outbound    ? 0x01 : 0;
+
+	len++; /* On SOL there's and additional fifth byte before the data starts */
+
+	if (payload->payload.sol_packet.character_count) {
+		/* We may have data to add */
+		memcpy(msg + len,
+		       payload->payload.sol_packet.data,
+		       payload->payload.sol_packet.character_count);
+		len += payload->payload.sol_packet.character_count;		
+	}
+
+	session->in_seq++;
+	if (session->in_seq == 0)
+		session->in_seq++;
+	
+	*llen = len;
+	return msg;
+}
+
+/*
+ * is_sol_packet
+ */
+static int
+is_sol_packet(struct ipmi_rs * rsp)
+{
+	return (rsp                                                           &&
+		(rsp->session.payloadtype == IPMI_PAYLOAD_TYPE_SOL));
+}
+
+
+
+/*
+ * sol_response_acks_packet
+ */
+static int
+sol_response_acks_packet(struct ipmi_rs         * rsp,
+			 struct ipmi_v2_payload * payload)
+{
+	return (is_sol_packet(rsp)                                            &&
+		payload                                                       &&
+		(payload->payload_type    == IPMI_PAYLOAD_TYPE_SOL)           && 
+		(rsp->payload.sol_packet.acked_packet_number ==
+		 payload->payload.sol_packet.packet_sequence_number));
+}
+
+/*
+ * ipmi_lan_send_sol_payload
+ *
+ */
+static struct ipmi_rs *
+ipmi_lan_send_sol_payload(struct ipmi_intf * intf,
+			  struct ipmi_v2_payload * payload)
+{
+	struct ipmi_rs      * rsp = NULL;
+	uint8_t             * msg;
+	int                   len;
+	int                   try = 0;
+
+	if (intf->opened == 0 && intf->open != NULL) {
+		if (intf->open(intf) < 0)
+			return NULL;
+	}
+
+	msg = ipmi_lan_build_sol_msg(intf, payload, &len);
+	if (len <= 0 || msg == NULL) {
+		lprintf(LOG_ERR, "Invalid SOL payload packet");
+		if (msg != NULL) {
+			free(msg);
+			msg = NULL;
+		}
+		return NULL;
+	}
+
+	lprintf(LOG_DEBUG, ">> SENDING A SOL MESSAGE\n");
+
+	for (;;) {
+		if (ipmi_lan_send_packet(intf, msg, len) < 0) {
+			try++;
+			usleep(5000);
+			continue;
+		}
+
+		/* if we are set to noanswer we do not expect response */
+		if (intf->noanswer)
+			break;
+		
+		if (payload->payload.sol_packet.packet_sequence_number == 0) {
+			/* We're just sending an ACK.  No need to retry. */
+			break;
+		}
+
+		usleep(100);
+		
+		rsp = ipmi_lan_recv_sol(intf); /* Grab the next packet */
+
+		if (sol_response_acks_packet(rsp, payload))
+			break;
+
+		else if (is_sol_packet(rsp) && rsp->data_len)
+		{
+			/*
+			 * We're still waiting for our ACK, but we more data from
+			 * the BMC
+			 */
+			intf->session->sol_data.sol_input_handler(rsp);
+		}
+
+		usleep(5000);
+		if (++try >= intf->session->retry) {
+			lprintf(LOG_DEBUG, "  No response from remote controller");
+			break;
+		}
+	}
+
+	if (msg != NULL) {
+		free(msg);
+		msg = NULL;
+	}
+	return rsp;
+}
+
+/*
+ * is_sol_partial_ack
+ *
+ * Determine if the response is a partial ACK/NACK that indicates
+ * we need to resend part of our packet.
+ *
+ * returns the number of characters we need to resend, or
+ *         0 if this isn't an ACK or we don't need to resend anything
+ */
+static int is_sol_partial_ack(struct ipmi_v2_payload * v2_payload,
+			      struct ipmi_rs         * rsp)
+{
+	int chars_to_resend = 0;
+
+	if (v2_payload                                &&
+	    rsp                                       &&
+	    is_sol_packet(rsp)                        &&
+	    sol_response_acks_packet(rsp, v2_payload) &&
+	    (rsp->payload.sol_packet.accepted_character_count <
+	     v2_payload->payload.sol_packet.character_count))
+	{
+		if (rsp->payload.sol_packet.accepted_character_count == 0) {
+			/* We should not resend data */
+			chars_to_resend = 0;
+		}
+		else
+		{
+			chars_to_resend =
+				v2_payload->payload.sol_packet.character_count -
+				rsp->payload.sol_packet.accepted_character_count;
+		}
+	}
+
+	return chars_to_resend;
+}
+
+/*
+ * set_sol_packet_sequence_number
+ */
+static void set_sol_packet_sequence_number(struct ipmi_intf * intf,
+					   struct ipmi_v2_payload * v2_payload)
+{
+	/* Keep our sequence number sane */
+	if (intf->session->sol_data.sequence_number > 0x0F)
+		intf->session->sol_data.sequence_number = 1;
+
+	v2_payload->payload.sol_packet.packet_sequence_number =
+		intf->session->sol_data.sequence_number++;
+}
+
+/*
+ * ipmi_lan_send_sol
+ *
+ * Sends a SOL packet..  We handle partial ACK/NACKs from the BMC here.
+ *
+ * Returns a pointer to the SOL ACK we received, or
+ *         0 on failure
+ * 
+ */
+struct ipmi_rs *
+ipmi_lan_send_sol(struct ipmi_intf * intf,
+		  struct ipmi_v2_payload * v2_payload)
+{
+	struct ipmi_rs * rsp;
+	int chars_to_resend = 0;
+
+	v2_payload->payload_type   = IPMI_PAYLOAD_TYPE_SOL;
+
+	/*
+	 * Payload length is just the length of the character
+	 * data here.
+	 */
+	v2_payload->payload.sol_packet.acked_packet_number = 0; /* NA */
+
+	set_sol_packet_sequence_number(intf, v2_payload);
+	
+	v2_payload->payload.sol_packet.accepted_character_count = 0; /* NA */
+
+	rsp = ipmi_lan_send_sol_payload(intf, v2_payload);
+
+	/* Determine if we need to resend some of our data */
+	chars_to_resend = is_sol_partial_ack(v2_payload, rsp);
+
+	while (chars_to_resend)
+	{
+		/*
+		 * We first need to handle any new data we might have
+		 * received in our NACK
+		 */
+		if (rsp->data_len)
+			intf->session->sol_data.sol_input_handler(rsp);
+
+		set_sol_packet_sequence_number(intf, v2_payload);
+		
+		/* Just send the required data */
+		memmove(v2_payload->payload.sol_packet.data,
+			v2_payload->payload.sol_packet.data +
+			rsp->payload.sol_packet.accepted_character_count,
+			chars_to_resend);
+
+		v2_payload->payload.sol_packet.character_count = chars_to_resend;
+
+		rsp = ipmi_lan_send_sol_payload(intf, v2_payload);
+
+		chars_to_resend = is_sol_partial_ack(v2_payload, rsp);
+	}
+
+	return rsp;
+}
+
+/*
+ * check_sol_packet_for_new_data
+ *
+ * Determine whether the SOL packet has already been seen
+ * and whether the packet has new data for us.
+ *
+ * This function has the side effect of removing an previously
+ * seen data, and moving new data to the front.
+ *
+ * It also "Remembers" the data so we don't get repeats.
+ *
+ */
+static int
+check_sol_packet_for_new_data(struct ipmi_intf * intf,
+			      struct ipmi_rs *rsp)
+{
+	static uint8_t last_received_sequence_number = 0;
+	static uint8_t last_received_byte_count      = 0;
+	int new_data_size                            = 0;
+
+	if (rsp &&
+	    (rsp->session.payloadtype == IPMI_PAYLOAD_TYPE_SOL))
+	    
+	{
+		uint8_t unaltered_data_len = rsp->data_len;
+		if (rsp->payload.sol_packet.packet_sequence_number ==
+		    last_received_sequence_number)
+		{
+			/*
+			 * This is the same as the last packet, but may include
+			 * extra data
+			 */
+			new_data_size = rsp->data_len - last_received_byte_count;
+			
+			if (new_data_size > 0)
+			{
+				/* We have more data to process */
+				memmove(rsp->data,
+					rsp->data +
+					rsp->data_len - new_data_size,
+					new_data_size);
+			}
+			
+			rsp->data_len = new_data_size;
+		}
+	
+		/*
+		 *Rember the data for next round
+		 */
+		if (rsp && rsp->payload.sol_packet.packet_sequence_number)
+		{
+			last_received_sequence_number =
+				rsp->payload.sol_packet.packet_sequence_number;
+			last_received_byte_count = unaltered_data_len;
+		}
+	}
+
+	return new_data_size;
+}
+
+/*
+ * ack_sol_packet
+ *
+ * Provided the specified packet looks reasonable, ACK it.
+ */
+static void
+ack_sol_packet(struct ipmi_intf * intf,
+	       struct ipmi_rs * rsp)
+{
+	if (rsp &&
+	    (rsp->session.payloadtype == IPMI_PAYLOAD_TYPE_SOL) &&
+	    (rsp->payload.sol_packet.packet_sequence_number))
+	{
+		struct ipmi_v2_payload ack;
+
+		memset(&ack, 0, sizeof(struct ipmi_v2_payload));
+
+		ack.payload_type = IPMI_PAYLOAD_TYPE_SOL;
+
+		/*
+		 * Payload length is just the length of the character
+		 * data here.
+		 */
+		ack.payload_length = 0;
+
+		/* ACK packets have sequence numbers of 0 */
+		ack.payload.sol_packet.packet_sequence_number = 0;
+
+		ack.payload.sol_packet.acked_packet_number =
+			rsp->payload.sol_packet.packet_sequence_number;
+
+		ack.payload.sol_packet.accepted_character_count = rsp->data_len;
+		
+		ipmi_lan_send_sol_payload(intf, &ack);
+	}
+}
+
+/*
+ * ipmi_recv_sol
+ *
+ * Receive a SOL packet and send an ACK in response.
+ *
+ */
+static struct ipmi_rs *
+ipmi_lan_recv_sol(struct ipmi_intf * intf)
+{
+	struct ipmi_rs * rsp = ipmi_lan_poll_recv(intf);
+
+	ack_sol_packet(intf, rsp);              
+
+	/*
+	 * Remembers the data sent, and alters the data to just
+	 * include the new stuff.
+	 */
+	check_sol_packet_for_new_data(intf, rsp);
+
+	return rsp;
+}
+
+/* send a get device id command to keep session active */
+static int
+ipmi_lan_keepalive(struct ipmi_intf * intf)
+{
+	struct ipmi_rs * rsp;
+	struct ipmi_rq req = { msg: {
+		netfn: IPMI_NETFN_APP,
+		cmd: 1,
+	}};
+
+	if (!intf->opened)
+		return 0;
+
+	rsp = intf->sendrecv(intf, &req);
+	if (rsp == NULL)
+		return -1;
+	if (rsp->ccode > 0)
+		return -1;
+
+	return 0;
+}
+
+/*
+ * IPMI Get Channel Authentication Capabilities Command
+ */
+static int
+ipmi_get_auth_capabilities_cmd(struct ipmi_intf * intf)
+{
+	struct ipmi_rs * rsp;
+	struct ipmi_rq req;
+	struct ipmi_session * s = intf->session;
+	uint8_t msg_data[2];
+
+	msg_data[0] = IPMI_LAN_CHANNEL_E;
+	msg_data[1] = s->privlvl;
+
+	memset(&req, 0, sizeof(req));
+	req.msg.netfn    = IPMI_NETFN_APP;
+	req.msg.cmd      = 0x38;
+	req.msg.data     = msg_data;
+	req.msg.data_len = 2;
+
+	rsp = intf->sendrecv(intf, &req);
+	if (rsp == NULL) {
+		lprintf(LOG_INFO, "Get Auth Capabilities command failed");
+		return -1;
+	}
+	if (verbose > 2)
+		printbuf(rsp->data, rsp->data_len, "get_auth_capabilities");
+
+	if (rsp->ccode > 0) {
+		lprintf(LOG_INFO, "Get Auth Capabilities command failed: %s",
+			val2str(rsp->ccode, completion_code_vals));
+		return -1;
+	}
+
+	lprintf(LOG_DEBUG, "Channel %02x Authentication Capabilities:",
+		rsp->data[0]);
+	lprintf(LOG_DEBUG, "  Privilege Level : %s",
+		val2str(req.msg.data[1], ipmi_privlvl_vals));
+	lprintf(LOG_DEBUG, "  Auth Types      : %s%s%s%s%s",
+		(rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_NONE) ? "NONE " : "",
+		(rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_MD2) ? "MD2 " : "",
+		(rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_MD5) ? "MD5 " : "",
+		(rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_PASSWORD) ? "PASSWORD " : "",
+		(rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_OEM) ? "OEM " : "");
+	lprintf(LOG_DEBUG, "  Per-msg auth    : %sabled",
+		(rsp->data[2] & IPMI_AUTHSTATUS_PER_MSG_DISABLED) ?
+		"dis" : "en");
+	lprintf(LOG_DEBUG, "  User level auth : %sabled",
+		(rsp->data[2] & IPMI_AUTHSTATUS_PER_USER_DISABLED) ?
+		"dis" : "en");
+	lprintf(LOG_DEBUG, "  Non-null users  : %sabled",
+		(rsp->data[2] & IPMI_AUTHSTATUS_NONNULL_USERS_ENABLED) ?
+		"en" : "dis");
+	lprintf(LOG_DEBUG, "  Null users      : %sabled",
+		(rsp->data[2] & IPMI_AUTHSTATUS_NULL_USERS_ENABLED) ?
+		"en" : "dis");
+	lprintf(LOG_DEBUG, "  Anonymous login : %sabled",
+		(rsp->data[2] & IPMI_AUTHSTATUS_ANONYMOUS_USERS_ENABLED) ?
+		"en" : "dis");
+	lprintf(LOG_DEBUG, "");
+
+	s->authstatus = rsp->data[2];
+
+	if (s->password &&
+	    (s->authtype_set == 0 ||
+	     s->authtype_set == IPMI_SESSION_AUTHTYPE_MD5) &&
+	    (rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_MD5))
+	{
+		s->authtype = IPMI_SESSION_AUTHTYPE_MD5;
+	}
+	else if (s->password &&
+		 (s->authtype_set == 0 ||
+		  s->authtype_set == IPMI_SESSION_AUTHTYPE_MD2) &&
+		 (rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_MD2))
+	{
+		s->authtype = IPMI_SESSION_AUTHTYPE_MD2;
+	}
+	else if (s->password &&
+		 (s->authtype_set == 0 ||
+		  s->authtype_set == IPMI_SESSION_AUTHTYPE_PASSWORD) &&
+		 (rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_PASSWORD))
+	{
+		s->authtype = IPMI_SESSION_AUTHTYPE_PASSWORD;
+	}
+	else if (s->password &&
+		 (s->authtype_set == 0 ||
+		  s->authtype_set == IPMI_SESSION_AUTHTYPE_OEM) &&
+		 (rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_OEM))
+	{
+		s->authtype = IPMI_SESSION_AUTHTYPE_OEM;
+	}
+	else if ((s->authtype_set == 0 ||
+		  s->authtype_set == IPMI_SESSION_AUTHTYPE_NONE) &&
+		 (rsp->data[1] & 1<<IPMI_SESSION_AUTHTYPE_NONE))
+	{
+		s->authtype = IPMI_SESSION_AUTHTYPE_NONE;
+	}
+	else {
+		if (!(rsp->data[1] & 1<<s->authtype_set))
+			lprintf(LOG_ERR, "Authentication type %s not supported",
+			       val2str(s->authtype_set, ipmi_authtype_session_vals));
+		else
+			lprintf(LOG_ERR, "No supported authtypes found");
+
+		return -1;
+	}
+
+	lprintf(LOG_DEBUG, "Proceeding with AuthType %s",
+		val2str(s->authtype, ipmi_authtype_session_vals));
+
+	return 0;
+}
+
+/*
+ * IPMI Get Session Challenge Command
+ * returns a temporary session ID and 16 byte challenge string
+ */
+static int
+ipmi_get_session_challenge_cmd(struct ipmi_intf * intf)
+{
+	struct ipmi_rs * rsp;
+	struct ipmi_rq req;
+	struct ipmi_session * s = intf->session;
+	uint8_t msg_data[17];
+
+	memset(msg_data, 0, 17);
+	msg_data[0] = s->authtype;
+	memcpy(msg_data+1, s->username, 16);
+
+	memset(&req, 0, sizeof(req));
+	req.msg.netfn		= IPMI_NETFN_APP;
+	req.msg.cmd		= 0x39;
+	req.msg.data		= msg_data;
+	req.msg.data_len	= 17; /* 1 byte for authtype, 16 for user */
+
+	rsp = intf->sendrecv(intf, &req);
+	if (rsp == NULL) {
+		lprintf(LOG_ERR, "Get Session Challenge command failed");
+		return -1;
+	}
+	if (verbose > 2)
+		printbuf(rsp->data, rsp->data_len, "get_session_challenge");
+
+	if (rsp->ccode > 0) {
+		switch (rsp->ccode) {
+		case 0x81:
+			lprintf(LOG_ERR, "Invalid user name");
+			break;
+		case 0x82:
+			lprintf(LOG_ERR, "NULL user name not enabled");
+			break;
+		default:
+			lprintf(LOG_ERR, "Get Session Challenge command failed: %s",
+				val2str(rsp->ccode, completion_code_vals));
+		}
+		return -1;
+	}
+
+	memcpy(&s->session_id, rsp->data, 4);
+	memcpy(s->challenge, rsp->data + 4, 16);
+
+	lprintf(LOG_DEBUG, "Opening Session");
+	lprintf(LOG_DEBUG, "  Session ID      : %08lx", (long)s->session_id);
+	lprintf(LOG_DEBUG, "  Challenge       : %s", buf2str(s->challenge, 16));
+
+	return 0;
+}
+
+/*
+ * IPMI Activate Session Command
+ */
+static int
+ipmi_activate_session_cmd(struct ipmi_intf * intf)
+{
+	struct ipmi_rs * rsp;
+	struct ipmi_rq req;
+	struct ipmi_session * s = intf->session;
+	uint8_t msg_data[22];
+
+	memset(&req, 0, sizeof(req));
+	req.msg.netfn = IPMI_NETFN_APP;
+	req.msg.cmd = 0x3a;
+
+	msg_data[0] = s->authtype;
+	msg_data[1] = s->privlvl;
+
+	/* supermicro oem authentication hack */
+	if (ipmi_oem_active(intf, "supermicro")) {
+		uint8_t * special = ipmi_auth_special(s);
+		memcpy(s->authcode, special, 16);
+		memset(msg_data + 2, 0, 16);
+		lprintf(LOG_DEBUG, "  OEM Auth        : %s",
+			buf2str(special, 16));
+	} else {
+		memcpy(msg_data + 2, s->challenge, 16);
+	}
+
+	/* setup initial outbound sequence number */
+	get_random(msg_data+18, 4);
+
+	req.msg.data = msg_data;
+	req.msg.data_len = 22;
+
+	s->active = 1;
+
+	lprintf(LOG_DEBUG, "  Privilege Level : %s",
+		val2str(msg_data[1], ipmi_privlvl_vals));
+	lprintf(LOG_DEBUG, "  Auth Type       : %s",
+		val2str(s->authtype, ipmi_authtype_session_vals));
+
+	rsp = intf->sendrecv(intf, &req);
+	if (rsp == NULL) {
+		lprintf(LOG_ERR, "Activate Session command failed");
+		s->active = 0;
+		return -1;
+	}
+	if (verbose > 2)
+		printbuf(rsp->data, rsp->data_len, "activate_session");
+
+	if (rsp->ccode) {
+		fprintf(stderr, "Activate Session error:");
+		switch (rsp->ccode) {
+		case 0x81:
+			lprintf(LOG_ERR, "\tNo session slot available");
+			break;
+		case 0x82:
+			lprintf(LOG_ERR, "\tNo slot available for given user - "
+				"limit reached");
+			break;
+		case 0x83:
+			lprintf(LOG_ERR, "\tNo slot available to support user "
+				"due to maximum privilege capacity");
+			break;
+		case 0x84:
+			lprintf(LOG_ERR, "\tSession sequence out of range");
+			break;
+		case 0x85:
+			lprintf(LOG_ERR, "\tInvalid session ID in request");
+			break;
+		case 0x86:
+			lprintf(LOG_ERR, "\tRequested privilege level "
+				"exceeds limit");
+			break;
+		case 0xd4:
+			lprintf(LOG_ERR, "\tInsufficient privilege level");
+			break;
+		default:
+			lprintf(LOG_ERR, "\t%s",
+				val2str(rsp->ccode, completion_code_vals));
+		}
+		return -1;
+	}
+
+	memcpy(&s->session_id, rsp->data + 1, 4);
+	s->in_seq = rsp->data[8] << 24 | rsp->data[7] << 16 | rsp->data[6] << 8 | rsp->data[5];
+	if (s->in_seq == 0)
+		++s->in_seq;
+
+	if (s->authstatus & IPMI_AUTHSTATUS_PER_MSG_DISABLED)
+		s->authtype = IPMI_SESSION_AUTHTYPE_NONE;
+	else if (s->authtype != (rsp->data[0] & 0xf)) {
+		lprintf(LOG_ERR, "Invalid Session AuthType %s in response",
+			val2str(s->authtype, ipmi_authtype_session_vals));
+		return -1;
+	}
+
+	bridge_possible = 1;
+
+	lprintf(LOG_DEBUG, "\nSession Activated");
+	lprintf(LOG_DEBUG, "  Auth Type       : %s",
+		val2str(rsp->data[0], ipmi_authtype_session_vals));
+	lprintf(LOG_DEBUG, "  Max Priv Level  : %s",
+		val2str(rsp->data[9], ipmi_privlvl_vals));
+	lprintf(LOG_DEBUG, "  Session ID      : %08lx", (long)s->session_id);
+	lprintf(LOG_DEBUG, "  Inbound Seq     : %08lx\n", (long)s->in_seq);
+
+	return 0;
+}
+
+
+/*
+ * IPMI Set Session Privilege Level Command
+ */
+static int
+ipmi_set_session_privlvl_cmd(struct ipmi_intf * intf)
+{
+	struct ipmi_rs * rsp;
+	struct ipmi_rq req;
+	uint8_t privlvl = intf->session->privlvl;
+	uint8_t backup_bridge_possible = bridge_possible;
+
+	if (privlvl <= IPMI_SESSION_PRIV_USER)
+		return 0;	/* no need to set higher */
+
+	memset(&req, 0, sizeof(req));
+	req.msg.netfn		= IPMI_NETFN_APP;
+	req.msg.cmd		= 0x3b;
+	req.msg.data		= &privlvl;
+	req.msg.data_len	= 1;
+
+	bridge_possible = 0;
+	rsp = intf->sendrecv(intf, &req);
+	bridge_possible = backup_bridge_possible;
+
+	if (rsp == NULL) {
+		lprintf(LOG_ERR, "Set Session Privilege Level to %s failed",
+			val2str(privlvl, ipmi_privlvl_vals));
+		return -1;
+	}
+	if (verbose > 2)
+		printbuf(rsp->data, rsp->data_len, "set_session_privlvl");
+
+	if (rsp->ccode > 0) {
+		lprintf(LOG_ERR, "Set Session Privilege Level to %s failed: %s",
+			val2str(privlvl, ipmi_privlvl_vals),
+			val2str(rsp->ccode, completion_code_vals));
+		return -1;
+	}
+
+	lprintf(LOG_DEBUG, "Set Session Privilege Level to %s\n",
+		val2str(rsp->data[0], ipmi_privlvl_vals));
+
+	return 0;
+}
+
+static int
+ipmi_close_session_cmd(struct ipmi_intf * intf)
+{
+	struct ipmi_rs * rsp;
+	struct ipmi_rq req;
+	uint8_t msg_data[4];
+	uint32_t session_id = intf->session->session_id;
+
+	if (intf->session->active == 0)
+		return -1;
+
+	intf->target_addr = IPMI_BMC_SLAVE_ADDR;
+	bridge_possible = 0;  /* Not a bridge message */
+
+	memcpy(&msg_data, &session_id, 4);
+
+	memset(&req, 0, sizeof(req));
+	req.msg.netfn		= IPMI_NETFN_APP;
+	req.msg.cmd		= 0x3c;
+	req.msg.data		= msg_data;
+	req.msg.data_len	= 4;
+
+	rsp = intf->sendrecv(intf, &req);
+	if (rsp == NULL) {
+		lprintf(LOG_ERR, "Close Session command failed");
+		return -1;
+	}
+	if (verbose > 2)
+		printbuf(rsp->data, rsp->data_len, "close_session");
+
+	if (rsp->ccode == 0x87) {
+		lprintf(LOG_ERR, "Failed to Close Session: invalid "
+			"session ID %08lx", (long)session_id);
+		return -1;
+	}
+	if (rsp->ccode > 0) {
+		lprintf(LOG_ERR, "Close Session command failed: %s",
+			val2str(rsp->ccode, completion_code_vals));
+		return -1;
+	}
+
+	lprintf(LOG_DEBUG, "Closed Session %08lx\n", (long)session_id);
+
+	return 0;
+}
+
+/*
+ * IPMI LAN Session Activation (IPMI spec v1.5 section 12.9)
+ *
+ * 1. send "RMCP Presence Ping" message, response message will
+ *    indicate whether the platform supports IPMI
+ * 2. send "Get Channel Authentication Capabilities" command
+ *    with AUTHTYPE = none, response packet will contain information
+ *    about supported challenge/response authentication types
+ * 3. send "Get Session Challenge" command with AUTHTYPE = none
+ *    and indicate the authentication type in the message, response
+ *    packet will contain challenge string and temporary session ID.
+ * 4. send "Activate Session" command, authenticated with AUTHTYPE
+ *    sent in previous message.  Also sends the initial value for
+ *    the outbound sequence number for BMC.
+ * 5. BMC returns response confirming session activation and
+ *    session ID for this session and initial inbound sequence.
+ */
+static int
+ipmi_lan_activate_session(struct ipmi_intf * intf)
+{
+	int rc;
+
+	/* don't fail on ping because its not always supported.
+	 * Supermicro's IPMI LAN 1.5 cards don't tolerate pings.
+	 */
+	if (!ipmi_oem_active(intf, "supermicro"))
+		ipmi_lan_ping(intf);
+
+	/* Some particular Intel boards need special help
+	 */
+	if (ipmi_oem_active(intf, "intelwv2"))
+		ipmi_lan_thump_first(intf);
+
+	rc = ipmi_get_auth_capabilities_cmd(intf);
+	if (rc < 0) {
+		goto fail;
+	}
+
+	rc = ipmi_get_session_challenge_cmd(intf);
+	if (rc < 0)
+		goto fail;
+
+	rc = ipmi_activate_session_cmd(intf);
+	if (rc < 0)
+		goto fail;
+
+	intf->abort = 0;
+
+	rc = ipmi_set_session_privlvl_cmd(intf);
+	if (rc < 0)
+		goto fail;
+
+	return 0;
+
+ fail:
+	lprintf(LOG_ERR, "Error: Unable to establish LAN session");
+	return -1;
+}
+
+static void
+ipmi_lan_close(struct ipmi_intf * intf)
+{
+	if (intf->abort == 0)
+		ipmi_close_session_cmd(intf);
+
+	if (intf->fd >= 0)
+		close(intf->fd);
+
+	ipmi_req_clear_entries();
+
+	if (intf->session != NULL) {
+		free(intf->session);
+		intf->session = NULL;
+	}
+
+	intf->opened = 0;
+	intf->manufacturer_id = IPMI_OEM_UNKNOWN;
+	intf = NULL;
+}
+
+static int
+ipmi_lan_open(struct ipmi_intf * intf)
+{
+	int rc;
+	struct ipmi_session *s;
+
+	if (intf == NULL || intf->session == NULL)
+		return -1;
+	s = intf->session;
+
+	if (s->port == 0)
+		s->port = IPMI_LAN_PORT;
+	if (s->privlvl == 0)
+		s->privlvl = IPMI_SESSION_PRIV_ADMIN;
+	if (s->timeout == 0)
+		s->timeout = IPMI_LAN_TIMEOUT;
+	if (s->retry == 0)
+		s->retry = IPMI_LAN_RETRY;
+
+	if (s->hostname == NULL || strlen((const char *)s->hostname) == 0) {
+		lprintf(LOG_ERR, "No hostname specified!");
+		return -1;
+	}
+
+	intf->abort = 1;
+
+	intf->session->sol_data.sequence_number = 1;
+	
+	if (ipmi_intf_socket_connect (intf) == -1) {
+		lprintf(LOG_ERR, "Could not open socket!");
+		return -1;
+	}
+
+	if (intf->fd < 0) {
+		lperror(LOG_ERR, "Connect to %s failed",
+			s->hostname);
+		intf->close(intf);
+		return -1;
+	}
+
+	intf->opened = 1;
+
+	/* try to open session */
+	rc = ipmi_lan_activate_session(intf);
+	if (rc < 0) {
+		intf->close(intf);
+		intf->opened = 0;
+		return -1;
+	}
+
+	intf->manufacturer_id = ipmi_get_oem(intf);
+
+	/* automatically detect interface request and response sizes */
+	hpm2_detect_max_payload_size(intf);
+
+	return intf->fd;
+}
+
+static int
+ipmi_lan_setup(struct ipmi_intf * intf)
+{
+	intf->session = malloc(sizeof(struct ipmi_session));
+	if (intf->session == NULL) {
+		lprintf(LOG_ERR, "ipmitool: malloc failure");
+		return -1;
+	}
+	memset(intf->session, 0, sizeof(struct ipmi_session));
+
+	/* setup default LAN maximum request and response sizes */
+	intf->max_request_data_size = IPMI_LAN_MAX_REQUEST_SIZE;
+	intf->max_response_data_size = IPMI_LAN_MAX_RESPONSE_SIZE;
+
+	return 0;
+}
+
+static void
+ipmi_lan_set_max_rq_data_size(struct ipmi_intf * intf, uint16_t size)
+{
+	if (size + 7 > 0xFF) {
+		size = 0xFF - 7;
+	}
+
+	intf->max_request_data_size = size;
+}
+
+static void
+ipmi_lan_set_max_rp_data_size(struct ipmi_intf * intf, uint16_t size)
+{
+	if (size + 8 > 0xFF) {
+		size = 0xFF - 8;
+	}
+
+	intf->max_response_data_size = size;
+}