Add BMC interface MAC to system info output

Useful for identifying the initial BMC traffic on the network.

Signed-off-by: Jack Miller <jack@codezen.org>

5 files changed, 56 insertions, 3 deletions

diff --git a/discover/ipmi.h b/discover/ipmi.h
index 3b11683..eb2a183 100644
--- a/discover/ipmi.h
+++ b/discover/ipmi.h
@@ -9,12 +9,14 @@
 enum ipmi_netfn {
 	IPMI_NETFN_CHASSIS	= 0x0,
 	IPMI_NETFN_SE		= 0x04,
+	IPMI_NETFN_TRANSPORT	= 0x0c,
 };
 
 enum ipmi_cmd {
 	IPMI_CMD_CHASSIS_SET_SYSTEM_BOOT_OPTIONS	= 0x08,
 	IPMI_CMD_CHASSIS_GET_SYSTEM_BOOT_OPTIONS	= 0x09,
 	IPMI_CMD_SENSOR_SET				= 0x30,
+	IPMI_CMD_TRANSPORT_GET_LAN_PARAMS		= 0x02,
 };
 
 enum ipmi_sensor_ids {
diff --git a/discover/platform-powerpc.c b/discover/platform-powerpc.c
index 23e63c1..2807934 100644
--- a/discover/platform-powerpc.c
+++ b/discover/platform-powerpc.c
@@ -989,6 +989,31 @@ static int set_ipmi_os_boot_sensor(struct platform_powerpc *platform)
 	return 0;
 }
 
+static void get_ipmi_bmc_mac(struct platform *p, uint8_t *buf)
+{
+	struct platform_powerpc *platform = p->platform_data;
+	uint16_t resp_len = 8;
+	uint8_t resp[8];
+	uint8_t req[] = { 0x1, 0x5, 0x0, 0x0 };
+	int i, rc;
+
+	rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_TRANSPORT,
+			IPMI_CMD_TRANSPORT_GET_LAN_PARAMS,
+			req, sizeof(req),
+			resp, &resp_len,
+			ipmi_timeout);
+
+	pb_debug("BMC MAC resp [%d][%d]:\n", rc, resp_len);
+
+	if (rc == 0 && resp_len > 0) {
+		for (i = 2; i < resp_len; i++) {
+		        pb_debug(" %x", resp[i]);
+			buf[i - 2] = resp[i];
+		}
+		pb_debug("\n");
+	}
+}
+
 static int load_config(struct platform *p, struct config *config)
 {
 	struct platform_powerpc *platform = to_platform_powerpc(p);
@@ -1057,6 +1082,10 @@ static int get_sysinfo(struct platform *p, struct system_info *sysinfo)
 		sysinfo->identifier = talloc_steal(sysinfo, buf);
 	talloc_free(filename);
 
+	sysinfo->bmc_mac = talloc_zero_size(sysinfo, HWADDR_SIZE);
+	if (platform->ipmi)
+		get_ipmi_bmc_mac(p, sysinfo->bmc_mac);
+
 	return 0;
 }
 
@@ -1085,7 +1114,6 @@ static bool probe(struct platform *p, void *ctx)
 		platform->get_ipmi_bootdev = get_ipmi_bootdev_ipmi;
 		platform->clear_ipmi_bootdev = clear_ipmi_bootdev_ipmi;
 		platform->set_os_boot_sensor = set_ipmi_os_boot_sensor;
-
 	} else if (!stat(sysparams_dir, &statbuf)) {
 		pb_debug("platform: using sysparams for IPMI paramters\n");
 		platform->get_ipmi_bootdev = get_ipmi_bootdev_sysparams;
diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c
index 7d45f51..ab5ea8a 100644
--- a/lib/pb-protocol/pb-protocol.c
+++ b/lib/pb-protocol/pb-protocol.c
@@ -239,6 +239,9 @@ int pb_protocol_system_info_len(const struct system_info *sysinfo)
 			4 + optional_strlen(bd_info->mountpoint);
 	}
 
+	/* BMC MAC */
+	len += HWADDR_SIZE;
+
 	return len;
 }
 
@@ -420,6 +423,9 @@ int pb_protocol_serialise_system_info(const struct system_info *sysinfo,
 		pos += pb_protocol_serialise_string(pos, bd_info->mountpoint);
 	}
 
+	memcpy(pos, sysinfo->bmc_mac, HWADDR_SIZE);
+	pos += HWADDR_SIZE;
+
 	assert(pos <= buf + buf_len);
 	(void)buf_len;
 
@@ -850,8 +856,18 @@ int pb_protocol_deserialise_system_info(struct system_info *sysinfo,
 
 		sysinfo->blockdevs[i] = bd_info;
 	}
-	rc = 0;
 
+	for (i = 0; i < HWADDR_SIZE; i++) {
+		if (pos[i] != 0) {
+			sysinfo->bmc_mac = talloc_memdup(sysinfo, pos, HWADDR_SIZE);
+			break;
+		}
+	}
+
+	pos += HWADDR_SIZE;
+	len -= HWADDR_SIZE;
+
+	rc = 0;
 out:
 	return rc;
 }
diff --git a/lib/types/types.h b/lib/types/types.h
index 6a2c258..702b6f5 100644
--- a/lib/types/types.h
+++ b/lib/types/types.h
@@ -93,6 +93,7 @@ struct blockdev_info {
 struct system_info {
 	char			*type;
 	char			*identifier;
+	uint8_t			*bmc_mac;
 	struct interface_info	**interfaces;
 	unsigned int		n_interfaces;
 	struct blockdev_info	**blockdevs;
diff --git a/ui/ncurses/nc-sysinfo.c b/ui/ncurses/nc-sysinfo.c
index ac8ece7..5ced871 100644
--- a/ui/ncurses/nc-sysinfo.c
+++ b/ui/ncurses/nc-sysinfo.c
@@ -51,6 +51,7 @@ static void if_info_mac_str(struct interface_info *info,
 static void sysinfo_screen_populate(struct sysinfo_screen *screen,
 		const struct system_info *sysinfo)
 {
+	char macbuf[32];
 	unsigned int i;
 
 	text_screen_clear(&screen->text_scr);
@@ -78,6 +79,12 @@ static void sysinfo_screen_populate(struct sysinfo_screen *screen,
 		line(NULL);
 	}
 
+	if (sysinfo->bmc_mac) {
+		mac_str(sysinfo->bmc_mac, HWADDR_SIZE, macbuf, sizeof(macbuf));
+		line(_("Management (BMC) interface"));
+		line(_(" MAC:  %s"), macbuf);
+	}
+
 	if (sysinfo->n_interfaces) {
 		line(NULL);
 		line(_("Network interfaces"));
@@ -85,7 +92,6 @@ static void sysinfo_screen_populate(struct sysinfo_screen *screen,
 
 	for (i = 0; i < sysinfo->n_interfaces; i++) {
 		struct interface_info *info = sysinfo->interfaces[i];
-		char macbuf[32];
 
 		if_info_mac_str(info, macbuf, sizeof(macbuf));