[xsigo] Add support for Xsigo virtual Ethernet (XVE) EoIB devices

Add support for EoIB devices as implemented by Xsigo.  Based on the
public (but out-of-tree) Linux kernel drivers at

  https://oss.oracle.com/git/?p=linux-uek.git;a=log;h=v4.1.12-32.2.1

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/config/config_infiniband.c

@@ -44,6 +44,9 @@ REQUIRE_OBJECT ( ib_srp );
 #ifdef VNIC_IPOIB
 REQUIRE_OBJECT ( ipoib );
 #endif
+#ifdef VNIC_XSIGO
+REQUIRE_OBJECT ( xsigo );
+#endif
 
 /*
  * Drag in Infiniband-specific commands

src/config/general.h

@@ -158,6 +158,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  *
  */
 #define VNIC_IPOIB		/* Infiniband IPoIB virtual NICs */
+//#define VNIC_XSIGO		/* Infiniband Xsigo virtual NICs */
 
 /*
  * Error message tables to include

src/include/ipxe/errfile.h

@@ -259,6 +259,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 #define ERRFILE_peerdisc		( ERRFILE_NET | 0x00450000 )
 #define ERRFILE_peerblk			( ERRFILE_NET | 0x00460000 )
 #define ERRFILE_peermux			( ERRFILE_NET | 0x00470000 )
+#define ERRFILE_xsigo			( ERRFILE_NET | 0x00480000 )
 
 #define ERRFILE_image		      ( ERRFILE_IMAGE | 0x00000000 )
 #define ERRFILE_elf		      ( ERRFILE_IMAGE | 0x00010000 )

src/include/ipxe/xsigo.h

@@ -0,0 +1,406 @@
+#ifndef _IPXE_XSIGO_H
+#define _IPXE_XSIGO_H
+
+/** @file
+ *
+ * Xsigo virtual Ethernet devices
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <stdint.h>
+#include <ipxe/infiniband.h>
+#include <ipxe/eoib.h>
+
+/** Xsigo directory service record name */
+#define XDS_SERVICE_NAME "XSIGOXDS"
+
+/** Xsigo configuration manager service ID */
+#define XCM_SERVICE_ID { 0x00, 0x00, 0x00, 0x00, 0x02, 0x13, 0x97, 0x01 }
+
+/** Xsigo management class */
+#define XSIGO_MGMT_CLASS 0x0b
+
+/** Xsigo management class version */
+#define XSIGO_MGMT_CLASS_VERSION 2
+
+/** Xsigo configuration manager request MAD */
+#define XSIGO_ATTR_XCM_REQUEST 0xb002
+
+/** Generic operating system type */
+#define XSIGO_OS_TYPE_GENERIC 0x40
+
+/** Xsigo virtual Ethernet broadcast GID prefix */
+#define XVE_PREFIX 0xff15101cUL
+
+/** Xsigo resource types */
+enum xsigo_resource_type {
+	/** Virtual Ethernet resource type */
+	XSIGO_RESOURCE_XVE = ( 1 << 6 ),
+	/** Absence-of-high-availability "resource" type */
+	XSIGO_RESOURCE_NO_HA = ( 1 << 4 ),
+};
+
+/** A Xsigo server identifier */
+struct xsigo_server_id {
+	/** Virtual machine ID */
+	uint32_t vm;
+	/** Port GUID */
+	union ib_guid guid;
+} __attribute__ (( packed ));
+
+/** A Xsigo configuration manager identifier */
+struct xsigo_manager_id {
+	/** Port GUID */
+	union ib_guid guid;
+	/** LID */
+	uint16_t lid;
+	/** Reserved */
+	uint8_t reserved[10];
+} __attribute__ (( packed ));
+
+/** A Xsigo configuration manager request MAD */
+struct xsigo_managers_request {
+	/** MAD header */
+	struct ib_mad_hdr mad_hdr;
+	/** Reserved */
+	uint8_t reserved0[32];
+	/** Server ID */
+	struct xsigo_server_id server;
+	/** Hostname */
+	char hostname[ 65 /* Seriously, guys? */ ];
+	/** OS version */
+	char os_version[32];
+	/** CPU architecture */
+	char arch[16];
+	/** OS type */
+	uint8_t os_type;
+	/** Reserved */
+	uint8_t reserved1[3];
+	/** Firmware version */
+	uint64_t firmware_version;
+	/** Hardware version */
+	uint32_t hardware_version;
+	/** Driver version */
+	uint32_t driver_version;
+	/** System ID */
+	union ib_gid system_id;
+	/** Resource types */
+	uint16_t resources;
+	/** Reserved */
+	uint8_t reserved2[2];
+	/** Build version */
+	char build[16];
+	/** Reserved */
+	uint8_t reserved3[19];
+} __attribute__ (( packed ));
+
+/** Resource types are present */
+#define XSIGO_RESOURCES_PRESENT 0x8000
+
+/** A Xsigo configuration manager reply MAD */
+struct xsigo_managers_reply {
+	/** MAD header */
+	struct ib_mad_hdr mad_hdr;
+	/** Reserved */
+	uint8_t reserved0[32];
+	/** Server ID */
+	struct xsigo_server_id server;
+	/** Number of XCM records */
+	uint8_t count;
+	/** Version */
+	uint8_t version;
+	/** Reserved */
+	uint8_t reserved1[2];
+	/** Managers */
+	struct xsigo_manager_id manager[8];
+	/** Reserved */
+	uint8_t reserved2[24];
+} __attribute__ (( packed ));
+
+/** A Xsigo MAD */
+union xsigo_mad {
+	/** Generic MAD */
+	union ib_mad mad;
+	/** Configuration manager request */
+	struct xsigo_managers_request request;
+	/** Configuration manager reply */
+	struct xsigo_managers_reply reply;
+} __attribute__ (( packed ));
+
+/** An XSMP node identifier */
+struct xsmp_node_id {
+	/** Auxiliary ID (never used) */
+	uint32_t aux;
+	/** Port GUID */
+	union ib_guid guid;
+} __attribute__ (( packed ));
+
+/** An XSMP message header */
+struct xsmp_message_header {
+	/** Message type */
+	uint8_t type;
+	/** Reason code */
+	uint8_t code;
+	/** Length */
+	uint16_t len;
+	/** Sequence number */
+	uint32_t seq;
+	/** Source node ID */
+	struct xsmp_node_id src;
+	/** Destination node ID */
+	struct xsmp_node_id dst;
+} __attribute__ (( packed ));
+
+/** XSMP message types */
+enum xsmp_message_type {
+	/** Session message type */
+	XSMP_TYPE_SESSION = 1,
+	/** Virtual Ethernet message type */
+	XSMP_TYPE_XVE = 6,
+};
+
+/** An XSMP session message */
+struct xsmp_session_message {
+	/** Message header */
+	struct xsmp_message_header hdr;
+	/** Message type */
+	uint8_t type;
+	/** Reason code */
+	uint8_t code;
+	/** Length (excluding message header) */
+	uint16_t len;
+	/** Operating system type */
+	uint8_t os_type;
+	/** Reserved */
+	uint8_t reserved0;
+	/** Resource types */
+	uint16_t resources;
+	/** Driver version */
+	uint32_t driver_version;
+	/** Required chassis version */
+	uint32_t chassis_version;
+	/** Boot flags */
+	uint32_t boot;
+	/** Firmware version */
+	uint64_t firmware_version;
+	/** Hardware version */
+	uint32_t hardware_version;
+	/** Vendor part ID */
+	uint32_t vendor;
+	/** Protocol version */
+	uint32_t xsmp_version;
+	/** Chassis name */
+	char chassis[32];
+	/** Session name */
+	char session[32];
+	/** Reserved */
+	uint8_t reserved1[120];
+} __attribute__ (( packed ));
+
+/** XSMP session message types */
+enum xsmp_session_type {
+	/** Keepalive message */
+	XSMP_SESSION_TYPE_HELLO = 1,
+	/** Initial registration message */
+	XSMP_SESSION_TYPE_REGISTER = 2,
+	/** Registration confirmation message */
+	XSMP_SESSION_TYPE_CONFIRM = 3,
+	/** Registration rejection message */
+	XSMP_SESSION_TYPE_REJECT = 4,
+	/** Shutdown message */
+	XSMP_SESSION_TYPE_SHUTDOWN = 5,
+};
+
+/** XSMP boot flags */
+enum xsmp_session_boot {
+	/** PXE boot */
+	XSMP_BOOT_PXE = ( 1 << 0 ),
+};
+
+/** XSMP virtual Ethernet channel adapter parameters */
+struct xsmp_xve_ca {
+	/** Subnet prefix (little-endian) */
+	union ib_guid prefix_le;
+	/** Control queue pair number */
+	uint32_t ctrl;
+	/** Data queue pair number */
+	uint32_t data;
+	/** Partition key */
+	uint16_t pkey;
+	/** Queue key */
+	uint16_t qkey;
+} __attribute__ (( packed ));
+
+/** XSMP virtual Ethernet MAC address */
+struct xsmp_xve_mac {
+	/** High 16 bits */
+	uint16_t high;
+	/** Low 32 bits */
+	uint32_t low;
+} __attribute__ (( packed ));
+
+/** An XSMP virtual Ethernet message */
+struct xsmp_xve_message {
+	/** Message header */
+	struct xsmp_message_header hdr;
+	/** Message type */
+	uint8_t type;
+	/** Reason code */
+	uint8_t code;
+	/** Length (excluding message header) */
+	uint16_t len;
+	/** Update bitmask */
+	uint32_t update;
+	/** Resource identifier */
+	union ib_guid resource;
+	/** TCA GUID (little-endian) */
+	union ib_guid guid_le;
+	/** TCA LID */
+	uint16_t lid;
+	/** MAC address (little-endian) */
+	struct xsmp_xve_mac mac_le;
+	/** Rate */
+	uint16_t rate;
+	/** Administrative state (non-zero = "up") */
+	uint16_t state;
+	/** Encapsulation (apparently obsolete and unused) */
+	uint16_t encap;
+	/** MTU */
+	uint16_t mtu;
+	/** Installation flags (apparently obsolete and unused) */
+	uint32_t install;
+	/** Interface name */
+	char name[16];
+	/** Service level */
+	uint16_t sl;
+	/** Flow control enabled (apparently obsolete and unused) */
+	uint16_t flow;
+	/** Committed rate (in Mbps) */
+	uint16_t committed_mbps;
+	/** Peak rate (in Mbps) */
+	uint16_t peak_mbps;
+	/** Committed burst size (in bytes) */
+	uint32_t committed_burst;
+	/** Peak burst size (in bytes) */
+	uint32_t peak_burst;
+	/** VMware index */
+	uint8_t vmware;
+	/** Reserved */
+	uint8_t reserved0;
+	/** Multipath flags */
+	uint16_t multipath;
+	/** Multipath group name */
+	char group[48];
+	/** Link aggregation flag */
+	uint8_t agg;
+	/** Link aggregation policy */
+	uint8_t policy;
+	/** Network ID */
+	uint32_t network;
+	/** Mode */
+	uint8_t mode;
+	/** Uplink type */
+	uint8_t uplink;
+	/** Target channel adapter parameters */
+	struct xsmp_xve_ca tca;
+	/** Host channel adapter parameters */
+	struct xsmp_xve_ca hca;
+	/** Reserved */
+	uint8_t reserved1[336];
+} __attribute__ (( packed ));
+
+/** XSMP virtual Ethernet message types */
+enum xsmp_xve_type {
+	/** Install virtual NIC */
+	XSMP_XVE_TYPE_INSTALL = 1,
+	/** Delete virtual NIC */
+	XSMP_XVE_TYPE_DELETE = 2,
+	/** Update virtual NIC */
+	XSMP_XVE_TYPE_UPDATE = 3,
+	/** Set operational state up */
+	XSMP_XVE_TYPE_OPER_UP = 6,
+	/** Set operational state down */
+	XSMP_XVE_TYPE_OPER_DOWN = 7,
+	/** Get operational state */
+	XSMP_XVE_TYPE_OPER_REQ = 15,
+	/** Virtual NIC is ready */
+	XSMP_XVE_TYPE_READY = 20,
+};
+
+/** XSMP virtual Ethernet message codes */
+enum xsmp_xve_code {
+	/* Something went wrong */
+	XSMP_XVE_CODE_ERROR = 0x84,
+};
+
+/** XSMP virtual Ethernet update bitmask */
+enum xsmp_xve_update {
+	/** Update MTU */
+	XSMP_XVE_UPDATE_MTU = ( 1 << 2 ),
+	/** Update administrative state */
+	XSMP_XVE_UPDATE_STATE = ( 1 << 6 ),
+	/** Update gateway to mark as down */
+	XSMP_XVE_UPDATE_GW_DOWN = ( 1 << 30 ),
+	/** Update gateway information */
+	XSMP_XVE_UPDATE_GW_CHANGE = ( 1 << 31 ),
+};
+
+/** XSMP virtual Ethernet modes */
+enum xsmp_xve_mode {
+	/** Reliable Connected */
+	XSMP_XVE_MODE_RC = 1,
+	/** Unreliable Datagram */
+	XSMP_XVE_MODE_UD = 2,
+};
+
+/** XSMP virtual Ethernet uplink types */
+enum xsmp_xve_uplink {
+	/** No uplink */
+	XSMP_XVE_NO_UPLINK = 1,
+	/** Has uplink */
+	XSMP_XVE_UPLINK = 2,
+};
+
+/** An XSMP message */
+union xsmp_message {
+	/** Message header */
+	struct xsmp_message_header hdr;
+	/** Session message */
+	struct xsmp_session_message sess;
+	/** Virtual Ethernet message */
+	struct xsmp_xve_message xve;
+};
+
+/** Delay between attempts to open the Infiniband device
+ *
+ * This is a policy decision.
+ */
+#define XSIGO_OPEN_RETRY_DELAY ( 2 * TICKS_PER_SEC )
+
+/** Delay between unsuccessful discovery attempts
+ *
+ * This is a policy decision.
+ */
+#define XSIGO_DISCOVERY_FAILURE_DELAY ( 10 * TICKS_PER_SEC )
+
+/** Delay between successful discovery attempts
+ *
+ * This is a policy decision.
+ */
+#define XSIGO_DISCOVERY_SUCCESS_DELAY ( 20 * TICKS_PER_SEC )
+
+/** Delay between keepalive requests
+ *
+ * This is a policy decision.
+ */
+#define XSIGO_KEEPALIVE_INTERVAL ( 10 * TICKS_PER_SEC )
+
+/** Maximum time to wait for a keepalive response
+ *
+ * This is a policy decision.
+ */
+#define XSIGO_KEEPALIVE_MAX_WAIT ( 2 * TICKS_PER_SEC )
+
+#endif /* _IPXE_XSIGO_H */