diff options
Diffstat (limited to 'qemu/roms/ipxe/src/net/infiniband/ib_srp.c')
| -rw-r--r-- | qemu/roms/ipxe/src/net/infiniband/ib_srp.c | 581 |
1 files changed, 0 insertions, 581 deletions
diff --git a/qemu/roms/ipxe/src/net/infiniband/ib_srp.c b/qemu/roms/ipxe/src/net/infiniband/ib_srp.c deleted file mode 100644 index 3700184c0..000000000 --- a/qemu/roms/ipxe/src/net/infiniband/ib_srp.c +++ /dev/null @@ -1,581 +0,0 @@ -/* - * Copyright (C) 2009 Fen Systems Ltd <mbrown@fensystems.co.uk>. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * Redistributions 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. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -FILE_LICENCE ( BSD2 ); - -#include <stdlib.h> -#include <errno.h> -#include <ipxe/interface.h> -#include <ipxe/uri.h> -#include <ipxe/open.h> -#include <ipxe/base16.h> -#include <ipxe/acpi.h> -#include <ipxe/srp.h> -#include <ipxe/infiniband.h> -#include <ipxe/ib_cmrc.h> -#include <ipxe/ib_srp.h> - -/** - * @file - * - * SCSI RDMA Protocol over Infiniband - * - */ - -/* Disambiguate the various possible EINVALs */ -#define EINVAL_BYTE_STRING_LEN __einfo_error ( EINFO_EINVAL_BYTE_STRING_LEN ) -#define EINFO_EINVAL_BYTE_STRING_LEN __einfo_uniqify \ - ( EINFO_EINVAL, 0x01, "Invalid byte string length" ) -#define EINVAL_INTEGER __einfo_error ( EINFO_EINVAL_INTEGER ) -#define EINFO_EINVAL_INTEGER __einfo_uniqify \ - ( EINFO_EINVAL, 0x03, "Invalid integer" ) -#define EINVAL_RP_TOO_SHORT __einfo_error ( EINFO_EINVAL_RP_TOO_SHORT ) -#define EINFO_EINVAL_RP_TOO_SHORT __einfo_uniqify \ - ( EINFO_EINVAL, 0x04, "Root path too short" ) - -/****************************************************************************** - * - * IB SRP devices - * - ****************************************************************************** - */ - -/** An Infiniband SRP device */ -struct ib_srp_device { - /** Reference count */ - struct refcnt refcnt; - - /** SRP transport interface */ - struct interface srp; - /** CMRC interface */ - struct interface cmrc; - - /** Infiniband device */ - struct ib_device *ibdev; - - /** Destination GID (for boot firmware table) */ - union ib_gid dgid; - /** Service ID (for boot firmware table) */ - union ib_guid service_id; -}; - -/** - * Free IB SRP device - * - * @v refcnt Reference count - */ -static void ib_srp_free ( struct refcnt *refcnt ) { - struct ib_srp_device *ib_srp = - container_of ( refcnt, struct ib_srp_device, refcnt ); - - ibdev_put ( ib_srp->ibdev ); - free ( ib_srp ); -} - -/** - * Close IB SRP device - * - * @v ib_srp IB SRP device - * @v rc Reason for close - */ -static void ib_srp_close ( struct ib_srp_device *ib_srp, int rc ) { - - /* Shut down interfaces */ - intf_shutdown ( &ib_srp->cmrc, rc ); - intf_shutdown ( &ib_srp->srp, rc ); -} - -/** - * Describe IB SRP device in an ACPI table - * - * @v srpdev SRP device - * @v acpi ACPI table - * @v len Length of ACPI table - * @ret rc Return status code - */ -static int ib_srp_describe ( struct ib_srp_device *ib_srp, - struct acpi_description_header *acpi, - size_t len ) { - struct ib_device *ibdev = ib_srp->ibdev; - struct sbft_table *sbft = - container_of ( acpi, struct sbft_table, acpi ); - struct sbft_ib_subtable *ib_sbft; - size_t used; - - /* Sanity check */ - if ( acpi->signature != SBFT_SIG ) - return -EINVAL; - - /* Append IB subtable to existing table */ - used = le32_to_cpu ( sbft->acpi.length ); - sbft->ib_offset = cpu_to_le16 ( used ); - ib_sbft = ( ( ( void * ) sbft ) + used ); - used += sizeof ( *ib_sbft ); - if ( used > len ) - return -ENOBUFS; - sbft->acpi.length = cpu_to_le32 ( used ); - - /* Populate subtable */ - memcpy ( &ib_sbft->sgid, &ibdev->gid, sizeof ( ib_sbft->sgid ) ); - memcpy ( &ib_sbft->dgid, &ib_srp->dgid, sizeof ( ib_sbft->dgid ) ); - memcpy ( &ib_sbft->service_id, &ib_srp->service_id, - sizeof ( ib_sbft->service_id ) ); - ib_sbft->pkey = cpu_to_le16 ( ibdev->pkey ); - - return 0; -} - -/** IB SRP CMRC interface operations */ -static struct interface_operation ib_srp_cmrc_op[] = { - INTF_OP ( intf_close, struct ib_srp_device *, ib_srp_close ), -}; - -/** IB SRP CMRC interface descriptor */ -static struct interface_descriptor ib_srp_cmrc_desc = - INTF_DESC_PASSTHRU ( struct ib_srp_device, cmrc, ib_srp_cmrc_op, srp ); - -/** IB SRP SRP interface operations */ -static struct interface_operation ib_srp_srp_op[] = { - INTF_OP ( acpi_describe, struct ib_srp_device *, ib_srp_describe ), - INTF_OP ( intf_close, struct ib_srp_device *, ib_srp_close ), -}; - -/** IB SRP SRP interface descriptor */ -static struct interface_descriptor ib_srp_srp_desc = - INTF_DESC_PASSTHRU ( struct ib_srp_device, srp, ib_srp_srp_op, cmrc ); - -/** - * Open IB SRP device - * - * @v block Block control interface - * @v ibdev Infiniband device - * @v dgid Destination GID - * @v service_id Service ID - * @v initiator Initiator port ID - * @v target Target port ID - * @v lun SCSI LUN - * @ret rc Return status code - */ -static int ib_srp_open ( struct interface *block, struct ib_device *ibdev, - union ib_gid *dgid, union ib_guid *service_id, - union srp_port_id *initiator, - union srp_port_id *target, struct scsi_lun *lun ) { - struct ib_srp_device *ib_srp; - int rc; - - /* Allocate and initialise structure */ - ib_srp = zalloc ( sizeof ( *ib_srp ) ); - if ( ! ib_srp ) { - rc = -ENOMEM; - goto err_zalloc; - } - ref_init ( &ib_srp->refcnt, ib_srp_free ); - intf_init ( &ib_srp->srp, &ib_srp_srp_desc, &ib_srp->refcnt ); - intf_init ( &ib_srp->cmrc, &ib_srp_cmrc_desc, &ib_srp->refcnt ); - ib_srp->ibdev = ibdev_get ( ibdev ); - DBGC ( ib_srp, "IBSRP %p for " IB_GID_FMT " " IB_GUID_FMT "\n", - ib_srp, IB_GID_ARGS ( dgid ), IB_GUID_ARGS ( service_id ) ); - - /* Preserve parameters required for boot firmware table */ - memcpy ( &ib_srp->dgid, dgid, sizeof ( ib_srp->dgid ) ); - memcpy ( &ib_srp->service_id, service_id, - sizeof ( ib_srp->service_id ) ); - - /* Open CMRC socket */ - if ( ( rc = ib_cmrc_open ( &ib_srp->cmrc, ibdev, dgid, - service_id ) ) != 0 ) { - DBGC ( ib_srp, "IBSRP %p could not open CMRC socket: %s\n", - ib_srp, strerror ( rc ) ); - goto err_cmrc_open; - } - - /* Attach SRP device to parent interface */ - if ( ( rc = srp_open ( block, &ib_srp->srp, initiator, target, - ibdev->rdma_key, lun ) ) != 0 ) { - DBGC ( ib_srp, "IBSRP %p could not create SRP device: %s\n", - ib_srp, strerror ( rc ) ); - goto err_srp_open; - } - - /* Mortalise self and return */ - ref_put ( &ib_srp->refcnt ); - return 0; - - err_srp_open: - err_cmrc_open: - ib_srp_close ( ib_srp, rc ); - ref_put ( &ib_srp->refcnt ); - err_zalloc: - return rc; -} - -/****************************************************************************** - * - * IB SRP URIs - * - ****************************************************************************** - */ - -/** IB SRP parse flags */ -enum ib_srp_parse_flags { - IB_SRP_PARSE_REQUIRED = 0x0000, - IB_SRP_PARSE_OPTIONAL = 0x8000, - IB_SRP_PARSE_FLAG_MASK = 0xf000, -}; - -/** IB SRP root path parameters */ -struct ib_srp_root_path { - /** Source GID */ - union ib_gid sgid; - /** Initiator port ID */ - union ib_srp_initiator_port_id initiator; - /** Destination GID */ - union ib_gid dgid; - /** Partition key */ - uint16_t pkey; - /** Service ID */ - union ib_guid service_id; - /** SCSI LUN */ - struct scsi_lun lun; - /** Target port ID */ - union ib_srp_target_port_id target; -}; - -/** - * Parse IB SRP root path byte-string value - * - * @v rp_comp Root path component string - * @v default_value Default value to use if component string is empty - * @ret value Value - */ -static int ib_srp_parse_byte_string ( const char *rp_comp, uint8_t *bytes, - unsigned int size_flags ) { - size_t size = ( size_flags & ~IB_SRP_PARSE_FLAG_MASK ); - size_t rp_comp_len = strlen ( rp_comp ); - int decoded_size; - - /* Allow optional components to be empty */ - if ( ( rp_comp_len == 0 ) && - ( size_flags & IB_SRP_PARSE_OPTIONAL ) ) - return 0; - - /* Check string length */ - if ( rp_comp_len != ( 2 * size ) ) - return -EINVAL_BYTE_STRING_LEN; - - /* Parse byte string */ - decoded_size = base16_decode ( rp_comp, bytes, size ); - if ( decoded_size < 0 ) - return decoded_size; - - return 0; -} - -/** - * Parse IB SRP root path integer value - * - * @v rp_comp Root path component string - * @v default_value Default value to use if component string is empty - * @ret value Value - */ -static int ib_srp_parse_integer ( const char *rp_comp, int default_value ) { - int value; - char *end; - - value = strtoul ( rp_comp, &end, 16 ); - if ( *end ) - return -EINVAL_INTEGER; - - if ( end == rp_comp ) - return default_value; - - return value; -} - -/** - * Parse IB SRP root path source GID - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_sgid ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - struct ib_device *ibdev; - - /* Default to the GID of the last opened Infiniband device */ - if ( ( ibdev = last_opened_ibdev() ) != NULL ) - memcpy ( &rp->sgid, &ibdev->gid, sizeof ( rp->sgid ) ); - - return ib_srp_parse_byte_string ( rp_comp, rp->sgid.bytes, - ( sizeof ( rp->sgid ) | - IB_SRP_PARSE_OPTIONAL ) ); -} - -/** - * Parse IB SRP root path initiator identifier extension - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_initiator_id_ext ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - union ib_srp_initiator_port_id *port_id = &rp->initiator; - - return ib_srp_parse_byte_string ( rp_comp, port_id->ib.id_ext.bytes, - ( sizeof ( port_id->ib.id_ext ) | - IB_SRP_PARSE_OPTIONAL ) ); -} - -/** - * Parse IB SRP root path initiator HCA GUID - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_initiator_hca_guid ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - union ib_srp_initiator_port_id *port_id = &rp->initiator; - - /* Default to the GUID portion of the source GID */ - memcpy ( &port_id->ib.hca_guid, &rp->sgid.s.guid, - sizeof ( port_id->ib.hca_guid ) ); - - return ib_srp_parse_byte_string ( rp_comp, port_id->ib.hca_guid.bytes, - ( sizeof ( port_id->ib.hca_guid ) | - IB_SRP_PARSE_OPTIONAL ) ); -} - -/** - * Parse IB SRP root path destination GID - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_dgid ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - return ib_srp_parse_byte_string ( rp_comp, rp->dgid.bytes, - ( sizeof ( rp->dgid ) | - IB_SRP_PARSE_REQUIRED ) ); -} - -/** - * Parse IB SRP root path partition key - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_pkey ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - int pkey; - - if ( ( pkey = ib_srp_parse_integer ( rp_comp, IB_PKEY_DEFAULT ) ) < 0 ) - return pkey; - rp->pkey = pkey; - return 0; -} - -/** - * Parse IB SRP root path service ID - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_service_id ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - return ib_srp_parse_byte_string ( rp_comp, rp->service_id.bytes, - ( sizeof ( rp->service_id ) | - IB_SRP_PARSE_REQUIRED ) ); -} - -/** - * Parse IB SRP root path LUN - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_lun ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - return scsi_parse_lun ( rp_comp, &rp->lun ); -} - -/** - * Parse IB SRP root path target identifier extension - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_target_id_ext ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - union ib_srp_target_port_id *port_id = &rp->target; - - return ib_srp_parse_byte_string ( rp_comp, port_id->ib.id_ext.bytes, - ( sizeof ( port_id->ib.id_ext ) | - IB_SRP_PARSE_REQUIRED ) ); -} - -/** - * Parse IB SRP root path target I/O controller GUID - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_target_ioc_guid ( const char *rp_comp, - struct ib_srp_root_path *rp ) { - union ib_srp_target_port_id *port_id = &rp->target; - - return ib_srp_parse_byte_string ( rp_comp, port_id->ib.ioc_guid.bytes, - ( sizeof ( port_id->ib.ioc_guid ) | - IB_SRP_PARSE_REQUIRED ) ); -} - -/** IB SRP root path component parser */ -struct ib_srp_root_path_parser { - /** - * Parse IB SRP root path component - * - * @v rp_comp Root path component string - * @v rp IB SRP root path - * @ret rc Return status code - */ - int ( * parse ) ( const char *rp_comp, struct ib_srp_root_path *rp ); -}; - -/** IB SRP root path components */ -static struct ib_srp_root_path_parser ib_srp_rp_parser[] = { - { ib_srp_parse_sgid }, - { ib_srp_parse_initiator_id_ext }, - { ib_srp_parse_initiator_hca_guid }, - { ib_srp_parse_dgid }, - { ib_srp_parse_pkey }, - { ib_srp_parse_service_id }, - { ib_srp_parse_lun }, - { ib_srp_parse_target_id_ext }, - { ib_srp_parse_target_ioc_guid }, -}; - -/** Number of IB SRP root path components */ -#define IB_SRP_NUM_RP_COMPONENTS \ - ( sizeof ( ib_srp_rp_parser ) / sizeof ( ib_srp_rp_parser[0] ) ) - -/** - * Parse IB SRP root path - * - * @v rp_string Root path string - * @v rp IB SRP root path - * @ret rc Return status code - */ -static int ib_srp_parse_root_path ( const char *rp_string, - struct ib_srp_root_path *rp ) { - struct ib_srp_root_path_parser *parser; - char rp_string_copy[ strlen ( rp_string ) + 1 ]; - char *rp_comp[IB_SRP_NUM_RP_COMPONENTS]; - char *rp_string_tmp = rp_string_copy; - unsigned int i = 0; - int rc; - - /* Split root path into component parts */ - strcpy ( rp_string_copy, rp_string ); - while ( 1 ) { - rp_comp[i++] = rp_string_tmp; - if ( i == IB_SRP_NUM_RP_COMPONENTS ) - break; - for ( ; *rp_string_tmp != ':' ; rp_string_tmp++ ) { - if ( ! *rp_string_tmp ) { - DBG ( "IBSRP root path \"%s\" too short\n", - rp_string ); - return -EINVAL_RP_TOO_SHORT; - } - } - *(rp_string_tmp++) = '\0'; - } - - /* Parse root path components */ - for ( i = 0 ; i < IB_SRP_NUM_RP_COMPONENTS ; i++ ) { - parser = &ib_srp_rp_parser[i]; - if ( ( rc = parser->parse ( rp_comp[i], rp ) ) != 0 ) { - DBG ( "IBSRP could not parse \"%s\" in root path " - "\"%s\": %s\n", rp_comp[i], rp_string, - strerror ( rc ) ); - return rc; - } - } - - return 0; -} - -/** - * Open IB SRP URI - * - * @v parent Parent interface - * @v uri URI - * @ret rc Return status code - */ -static int ib_srp_open_uri ( struct interface *parent, struct uri *uri ) { - struct ib_srp_root_path rp; - struct ib_device *ibdev; - int rc; - - /* Parse URI */ - if ( ! uri->opaque ) - return -EINVAL; - memset ( &rp, 0, sizeof ( rp ) ); - if ( ( rc = ib_srp_parse_root_path ( uri->opaque, &rp ) ) != 0 ) - return rc; - - /* Identify Infiniband device */ - ibdev = find_ibdev ( &rp.sgid ); - if ( ! ibdev ) { - DBG ( "IBSRP could not identify Infiniband device\n" ); - return -ENODEV; - } - - /* Open IB SRP device */ - if ( ( rc = ib_srp_open ( parent, ibdev, &rp.dgid, &rp.service_id, - &rp.initiator.srp, &rp.target.srp, - &rp.lun ) ) != 0 ) - return rc; - - return 0; -} - -/** IB SRP URI opener */ -struct uri_opener ib_srp_uri_opener __uri_opener = { - .scheme = "ib_srp", - .open = ib_srp_open_uri, -}; |