978 lines
23 KiB
C
978 lines
23 KiB
C
/*
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* Copyright 2007 Red Hat, Inc.
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* by Peter Jones <pjones@redhat.com>
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* Copyright 2008 IBM, Inc.
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* by Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Copyright 2008
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* by Konrad Rzeszutek <ketuzsezr@darnok.org>
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*
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* This code exposes the iSCSI Boot Format Table to userland via sysfs.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License v2.0 as published by
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* the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Changelog:
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*
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* 14 Mar 2008 - Konrad Rzeszutek <ketuzsezr@darnok.org>
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* Updated comments and copyrights. (v0.4.9)
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*
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* 11 Feb 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Converted to using ibft_addr. (v0.4.8)
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*
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* 8 Feb 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Combined two functions in one: reserve_ibft_region. (v0.4.7)
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*
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* 30 Jan 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Added logic to handle IPv6 addresses. (v0.4.6)
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*
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* 25 Jan 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Added logic to handle badly not-to-spec iBFT. (v0.4.5)
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*
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* 4 Jan 2008 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Added __init to function declarations. (v0.4.4)
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*
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* 21 Dec 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Updated kobject registration, combined unregister functions in one
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* and code and style cleanup. (v0.4.3)
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*
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* 5 Dec 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Added end-markers to enums and re-organized kobject registration. (v0.4.2)
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*
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* 4 Dec 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Created 'device' sysfs link to the NIC and style cleanup. (v0.4.1)
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*
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* 28 Nov 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Added sysfs-ibft documentation, moved 'find_ibft' function to
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* in its own file and added text attributes for every struct field. (v0.4)
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*
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* 21 Nov 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Added text attributes emulating OpenFirmware /proc/device-tree naming.
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* Removed binary /sysfs interface (v0.3)
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*
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* 29 Aug 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* Added functionality in setup.c to reserve iBFT region. (v0.2)
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*
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* 27 Aug 2007 - Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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* First version exposing iBFT data via a binary /sysfs. (v0.1)
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*
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*/
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#include <linux/blkdev.h>
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#include <linux/capability.h>
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#include <linux/ctype.h>
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/iscsi_ibft.h>
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#include <linux/limits.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/stat.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#define IBFT_ISCSI_VERSION "0.4.9"
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#define IBFT_ISCSI_DATE "2008-Mar-14"
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MODULE_AUTHOR("Peter Jones <pjones@redhat.com> and \
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Konrad Rzeszutek <ketuzsezr@darnok.org>");
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MODULE_DESCRIPTION("sysfs interface to BIOS iBFT information");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(IBFT_ISCSI_VERSION);
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struct ibft_hdr {
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u8 id;
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u8 version;
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u16 length;
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u8 index;
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u8 flags;
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} __attribute__((__packed__));
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struct ibft_control {
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struct ibft_hdr hdr;
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u16 extensions;
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u16 initiator_off;
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u16 nic0_off;
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u16 tgt0_off;
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u16 nic1_off;
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u16 tgt1_off;
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} __attribute__((__packed__));
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struct ibft_initiator {
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struct ibft_hdr hdr;
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char isns_server[16];
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char slp_server[16];
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char pri_radius_server[16];
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char sec_radius_server[16];
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u16 initiator_name_len;
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u16 initiator_name_off;
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} __attribute__((__packed__));
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struct ibft_nic {
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struct ibft_hdr hdr;
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char ip_addr[16];
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u8 subnet_mask_prefix;
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u8 origin;
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char gateway[16];
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char primary_dns[16];
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char secondary_dns[16];
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char dhcp[16];
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u16 vlan;
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char mac[6];
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u16 pci_bdf;
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u16 hostname_len;
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u16 hostname_off;
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} __attribute__((__packed__));
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struct ibft_tgt {
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struct ibft_hdr hdr;
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char ip_addr[16];
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u16 port;
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char lun[8];
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u8 chap_type;
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u8 nic_assoc;
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u16 tgt_name_len;
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u16 tgt_name_off;
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u16 chap_name_len;
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u16 chap_name_off;
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u16 chap_secret_len;
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u16 chap_secret_off;
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u16 rev_chap_name_len;
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u16 rev_chap_name_off;
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u16 rev_chap_secret_len;
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u16 rev_chap_secret_off;
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} __attribute__((__packed__));
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/*
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* The kobject different types and its names.
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*
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*/
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enum ibft_id {
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id_reserved = 0, /* We don't support. */
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id_control = 1, /* Should show up only once and is not exported. */
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id_initiator = 2,
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id_nic = 3,
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id_target = 4,
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id_extensions = 5, /* We don't support. */
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id_end_marker,
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};
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/*
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* We do not support the other types, hence the usage of NULL.
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* This maps to the enum ibft_id.
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*/
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static const char *ibft_id_names[] =
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{NULL, NULL, "initiator", "ethernet%d", "target%d", NULL, NULL};
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/*
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* The text attributes names for each of the kobjects.
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*/
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enum ibft_eth_properties_enum {
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ibft_eth_index,
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ibft_eth_flags,
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ibft_eth_ip_addr,
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ibft_eth_subnet_mask,
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ibft_eth_origin,
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ibft_eth_gateway,
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ibft_eth_primary_dns,
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ibft_eth_secondary_dns,
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ibft_eth_dhcp,
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ibft_eth_vlan,
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ibft_eth_mac,
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/* ibft_eth_pci_bdf - this is replaced by link to the device itself. */
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ibft_eth_hostname,
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ibft_eth_end_marker,
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};
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static const char *ibft_eth_properties[] =
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{"index", "flags", "ip-addr", "subnet-mask", "origin", "gateway",
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"primary-dns", "secondary-dns", "dhcp", "vlan", "mac", "hostname",
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NULL};
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enum ibft_tgt_properties_enum {
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ibft_tgt_index,
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ibft_tgt_flags,
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ibft_tgt_ip_addr,
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ibft_tgt_port,
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ibft_tgt_lun,
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ibft_tgt_chap_type,
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ibft_tgt_nic_assoc,
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ibft_tgt_name,
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ibft_tgt_chap_name,
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ibft_tgt_chap_secret,
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ibft_tgt_rev_chap_name,
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ibft_tgt_rev_chap_secret,
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ibft_tgt_end_marker,
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};
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static const char *ibft_tgt_properties[] =
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{"index", "flags", "ip-addr", "port", "lun", "chap-type", "nic-assoc",
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"target-name", "chap-name", "chap-secret", "rev-chap-name",
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"rev-chap-name-secret", NULL};
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enum ibft_initiator_properties_enum {
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ibft_init_index,
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ibft_init_flags,
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ibft_init_isns_server,
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ibft_init_slp_server,
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ibft_init_pri_radius_server,
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ibft_init_sec_radius_server,
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ibft_init_initiator_name,
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ibft_init_end_marker,
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};
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static const char *ibft_initiator_properties[] =
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{"index", "flags", "isns-server", "slp-server", "pri-radius-server",
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"sec-radius-server", "initiator-name", NULL};
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/*
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* The kobject and attribute structures.
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*/
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struct ibft_kobject {
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struct ibft_table_header *header;
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union {
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struct ibft_initiator *initiator;
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struct ibft_nic *nic;
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struct ibft_tgt *tgt;
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struct ibft_hdr *hdr;
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};
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struct kobject kobj;
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struct list_head node;
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};
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struct ibft_attribute {
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struct attribute attr;
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ssize_t (*show) (struct ibft_kobject *entry,
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struct ibft_attribute *attr, char *buf);
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union {
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struct ibft_initiator *initiator;
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struct ibft_nic *nic;
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struct ibft_tgt *tgt;
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struct ibft_hdr *hdr;
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};
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struct kobject *kobj;
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int type; /* The enum of the type. This can be any value of:
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ibft_eth_properties_enum, ibft_tgt_properties_enum,
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or ibft_initiator_properties_enum. */
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struct list_head node;
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};
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static LIST_HEAD(ibft_attr_list);
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static LIST_HEAD(ibft_kobject_list);
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static const char nulls[16];
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/*
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* Helper functions to parse data properly.
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*/
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static ssize_t sprintf_ipaddr(char *buf, u8 *ip)
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{
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char *str = buf;
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if (ip[0] == 0 && ip[1] == 0 && ip[2] == 0 && ip[3] == 0 &&
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ip[4] == 0 && ip[5] == 0 && ip[6] == 0 && ip[7] == 0 &&
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ip[8] == 0 && ip[9] == 0 && ip[10] == 0xff && ip[11] == 0xff) {
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/*
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* IPV4
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*/
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str += sprintf(buf, "%pI4", ip + 12);
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} else {
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/*
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* IPv6
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*/
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str += sprintf(str, "%pI6", ip);
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}
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str += sprintf(str, "\n");
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return str - buf;
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}
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static ssize_t sprintf_string(char *str, int len, char *buf)
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{
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return sprintf(str, "%.*s\n", len, buf);
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}
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/*
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* Helper function to verify the IBFT header.
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*/
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static int ibft_verify_hdr(char *t, struct ibft_hdr *hdr, int id, int length)
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{
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if (hdr->id != id) {
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printk(KERN_ERR "iBFT error: We expected the " \
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"field header.id to have %d but " \
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"found %d instead!\n", id, hdr->id);
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return -ENODEV;
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}
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if (hdr->length != length) {
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printk(KERN_ERR "iBFT error: We expected the " \
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"field header.length to have %d but " \
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"found %d instead!\n", length, hdr->length);
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return -ENODEV;
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}
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return 0;
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}
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static void ibft_release(struct kobject *kobj)
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{
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struct ibft_kobject *ibft =
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container_of(kobj, struct ibft_kobject, kobj);
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kfree(ibft);
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}
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/*
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* Routines for parsing the iBFT data to be human readable.
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*/
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static ssize_t ibft_attr_show_initiator(struct ibft_kobject *entry,
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struct ibft_attribute *attr,
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char *buf)
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{
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struct ibft_initiator *initiator = entry->initiator;
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void *ibft_loc = entry->header;
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char *str = buf;
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if (!initiator)
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return 0;
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switch (attr->type) {
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case ibft_init_index:
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str += sprintf(str, "%d\n", initiator->hdr.index);
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break;
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case ibft_init_flags:
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str += sprintf(str, "%d\n", initiator->hdr.flags);
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break;
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case ibft_init_isns_server:
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str += sprintf_ipaddr(str, initiator->isns_server);
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break;
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case ibft_init_slp_server:
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str += sprintf_ipaddr(str, initiator->slp_server);
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break;
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case ibft_init_pri_radius_server:
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str += sprintf_ipaddr(str, initiator->pri_radius_server);
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break;
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case ibft_init_sec_radius_server:
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str += sprintf_ipaddr(str, initiator->sec_radius_server);
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break;
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case ibft_init_initiator_name:
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str += sprintf_string(str, initiator->initiator_name_len,
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(char *)ibft_loc +
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initiator->initiator_name_off);
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break;
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default:
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break;
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}
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return str - buf;
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}
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static ssize_t ibft_attr_show_nic(struct ibft_kobject *entry,
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struct ibft_attribute *attr,
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char *buf)
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{
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struct ibft_nic *nic = entry->nic;
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void *ibft_loc = entry->header;
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char *str = buf;
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char *mac;
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int val;
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if (!nic)
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return 0;
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switch (attr->type) {
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case ibft_eth_index:
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str += sprintf(str, "%d\n", nic->hdr.index);
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break;
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case ibft_eth_flags:
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str += sprintf(str, "%d\n", nic->hdr.flags);
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break;
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case ibft_eth_ip_addr:
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str += sprintf_ipaddr(str, nic->ip_addr);
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break;
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case ibft_eth_subnet_mask:
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val = ~((1 << (32-nic->subnet_mask_prefix))-1);
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str += sprintf(str, NIPQUAD_FMT,
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(u8)(val >> 24), (u8)(val >> 16),
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(u8)(val >> 8), (u8)(val));
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break;
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case ibft_eth_origin:
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str += sprintf(str, "%d\n", nic->origin);
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break;
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case ibft_eth_gateway:
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str += sprintf_ipaddr(str, nic->gateway);
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break;
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case ibft_eth_primary_dns:
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str += sprintf_ipaddr(str, nic->primary_dns);
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break;
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case ibft_eth_secondary_dns:
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str += sprintf_ipaddr(str, nic->secondary_dns);
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break;
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case ibft_eth_dhcp:
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str += sprintf_ipaddr(str, nic->dhcp);
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break;
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case ibft_eth_vlan:
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str += sprintf(str, "%d\n", nic->vlan);
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break;
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case ibft_eth_mac:
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mac = nic->mac;
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str += sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x\n",
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(u8)mac[0], (u8)mac[1], (u8)mac[2],
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(u8)mac[3], (u8)mac[4], (u8)mac[5]);
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break;
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case ibft_eth_hostname:
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str += sprintf_string(str, nic->hostname_len,
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(char *)ibft_loc + nic->hostname_off);
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break;
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default:
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break;
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}
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return str - buf;
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};
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static ssize_t ibft_attr_show_target(struct ibft_kobject *entry,
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struct ibft_attribute *attr,
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char *buf)
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{
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struct ibft_tgt *tgt = entry->tgt;
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void *ibft_loc = entry->header;
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char *str = buf;
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int i;
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if (!tgt)
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return 0;
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switch (attr->type) {
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case ibft_tgt_index:
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str += sprintf(str, "%d\n", tgt->hdr.index);
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break;
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case ibft_tgt_flags:
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str += sprintf(str, "%d\n", tgt->hdr.flags);
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break;
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case ibft_tgt_ip_addr:
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str += sprintf_ipaddr(str, tgt->ip_addr);
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break;
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case ibft_tgt_port:
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str += sprintf(str, "%d\n", tgt->port);
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break;
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case ibft_tgt_lun:
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for (i = 0; i < 8; i++)
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str += sprintf(str, "%x", (u8)tgt->lun[i]);
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str += sprintf(str, "\n");
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break;
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case ibft_tgt_nic_assoc:
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str += sprintf(str, "%d\n", tgt->nic_assoc);
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break;
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case ibft_tgt_chap_type:
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str += sprintf(str, "%d\n", tgt->chap_type);
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break;
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case ibft_tgt_name:
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str += sprintf_string(str, tgt->tgt_name_len,
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(char *)ibft_loc + tgt->tgt_name_off);
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break;
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case ibft_tgt_chap_name:
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str += sprintf_string(str, tgt->chap_name_len,
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(char *)ibft_loc + tgt->chap_name_off);
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break;
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case ibft_tgt_chap_secret:
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str += sprintf_string(str, tgt->chap_secret_len,
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(char *)ibft_loc + tgt->chap_secret_off);
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break;
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case ibft_tgt_rev_chap_name:
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|
str += sprintf_string(str, tgt->rev_chap_name_len,
|
|
(char *)ibft_loc +
|
|
tgt->rev_chap_name_off);
|
|
break;
|
|
case ibft_tgt_rev_chap_secret:
|
|
str += sprintf_string(str, tgt->rev_chap_secret_len,
|
|
(char *)ibft_loc +
|
|
tgt->rev_chap_secret_off);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return str - buf;
|
|
}
|
|
|
|
/*
|
|
* The routine called for all sysfs attributes.
|
|
*/
|
|
static ssize_t ibft_show_attribute(struct kobject *kobj,
|
|
struct attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct ibft_kobject *dev =
|
|
container_of(kobj, struct ibft_kobject, kobj);
|
|
struct ibft_attribute *ibft_attr =
|
|
container_of(attr, struct ibft_attribute, attr);
|
|
ssize_t ret = -EIO;
|
|
char *str = buf;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
|
|
if (ibft_attr->show)
|
|
ret = ibft_attr->show(dev, ibft_attr, str);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct sysfs_ops ibft_attr_ops = {
|
|
.show = ibft_show_attribute,
|
|
};
|
|
|
|
static struct kobj_type ibft_ktype = {
|
|
.release = ibft_release,
|
|
.sysfs_ops = &ibft_attr_ops,
|
|
};
|
|
|
|
static struct kset *ibft_kset;
|
|
|
|
static int __init ibft_check_device(void)
|
|
{
|
|
int len;
|
|
u8 *pos;
|
|
u8 csum = 0;
|
|
|
|
len = ibft_addr->length;
|
|
|
|
/* Sanity checking of iBFT. */
|
|
if (ibft_addr->revision != 1) {
|
|
printk(KERN_ERR "iBFT module supports only revision 1, " \
|
|
"while this is %d.\n", ibft_addr->revision);
|
|
return -ENOENT;
|
|
}
|
|
for (pos = (u8 *)ibft_addr; pos < (u8 *)ibft_addr + len; pos++)
|
|
csum += *pos;
|
|
|
|
if (csum) {
|
|
printk(KERN_ERR "iBFT has incorrect checksum (0x%x)!\n", csum);
|
|
return -ENOENT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Helper function for ibft_register_kobjects.
|
|
*/
|
|
static int __init ibft_create_kobject(struct ibft_table_header *header,
|
|
struct ibft_hdr *hdr,
|
|
struct list_head *list)
|
|
{
|
|
struct ibft_kobject *ibft_kobj = NULL;
|
|
struct ibft_nic *nic = (struct ibft_nic *)hdr;
|
|
struct pci_dev *pci_dev;
|
|
int rc = 0;
|
|
|
|
ibft_kobj = kzalloc(sizeof(*ibft_kobj), GFP_KERNEL);
|
|
if (!ibft_kobj)
|
|
return -ENOMEM;
|
|
|
|
ibft_kobj->header = header;
|
|
ibft_kobj->hdr = hdr;
|
|
|
|
switch (hdr->id) {
|
|
case id_initiator:
|
|
rc = ibft_verify_hdr("initiator", hdr, id_initiator,
|
|
sizeof(*ibft_kobj->initiator));
|
|
break;
|
|
case id_nic:
|
|
rc = ibft_verify_hdr("ethernet", hdr, id_nic,
|
|
sizeof(*ibft_kobj->nic));
|
|
break;
|
|
case id_target:
|
|
rc = ibft_verify_hdr("target", hdr, id_target,
|
|
sizeof(*ibft_kobj->tgt));
|
|
break;
|
|
case id_reserved:
|
|
case id_control:
|
|
case id_extensions:
|
|
/* Fields which we don't support. Ignore them */
|
|
rc = 1;
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "iBFT has unknown structure type (%d). " \
|
|
"Report this bug to %.6s!\n", hdr->id,
|
|
header->oem_id);
|
|
rc = 1;
|
|
break;
|
|
}
|
|
|
|
if (rc) {
|
|
/* Skip adding this kobject, but exit with non-fatal error. */
|
|
kfree(ibft_kobj);
|
|
goto out_invalid_struct;
|
|
}
|
|
|
|
ibft_kobj->kobj.kset = ibft_kset;
|
|
|
|
rc = kobject_init_and_add(&ibft_kobj->kobj, &ibft_ktype,
|
|
NULL, ibft_id_names[hdr->id], hdr->index);
|
|
|
|
if (rc) {
|
|
kfree(ibft_kobj);
|
|
goto out;
|
|
}
|
|
|
|
kobject_uevent(&ibft_kobj->kobj, KOBJ_ADD);
|
|
|
|
if (hdr->id == id_nic) {
|
|
/*
|
|
* We don't search for the device in other domains than
|
|
* zero. This is because on x86 platforms the BIOS
|
|
* executes only devices which are in domain 0. Furthermore, the
|
|
* iBFT spec doesn't have a domain id field :-(
|
|
*/
|
|
pci_dev = pci_get_bus_and_slot((nic->pci_bdf & 0xff00) >> 8,
|
|
(nic->pci_bdf & 0xff));
|
|
if (pci_dev) {
|
|
rc = sysfs_create_link(&ibft_kobj->kobj,
|
|
&pci_dev->dev.kobj, "device");
|
|
pci_dev_put(pci_dev);
|
|
}
|
|
}
|
|
|
|
/* Nothing broke so lets add it to the list. */
|
|
list_add_tail(&ibft_kobj->node, list);
|
|
out:
|
|
return rc;
|
|
out_invalid_struct:
|
|
/* Unsupported structs are skipped. */
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Scan the IBFT table structure for the NIC and Target fields. When
|
|
* found add them on the passed-in list. We do not support the other
|
|
* fields at this point, so they are skipped.
|
|
*/
|
|
static int __init ibft_register_kobjects(struct ibft_table_header *header,
|
|
struct list_head *list)
|
|
{
|
|
struct ibft_control *control = NULL;
|
|
void *ptr, *end;
|
|
int rc = 0;
|
|
u16 offset;
|
|
u16 eot_offset;
|
|
|
|
control = (void *)header + sizeof(*header);
|
|
end = (void *)control + control->hdr.length;
|
|
eot_offset = (void *)header + header->length - (void *)control;
|
|
rc = ibft_verify_hdr("control", (struct ibft_hdr *)control, id_control,
|
|
sizeof(*control));
|
|
|
|
/* iBFT table safety checking */
|
|
rc |= ((control->hdr.index) ? -ENODEV : 0);
|
|
if (rc) {
|
|
printk(KERN_ERR "iBFT error: Control header is invalid!\n");
|
|
return rc;
|
|
}
|
|
for (ptr = &control->initiator_off; ptr < end; ptr += sizeof(u16)) {
|
|
offset = *(u16 *)ptr;
|
|
if (offset && offset < header->length && offset < eot_offset) {
|
|
rc = ibft_create_kobject(header,
|
|
(void *)header + offset,
|
|
list);
|
|
if (rc)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void ibft_unregister(struct list_head *attr_list,
|
|
struct list_head *kobj_list)
|
|
{
|
|
struct ibft_kobject *data = NULL, *n;
|
|
struct ibft_attribute *attr = NULL, *m;
|
|
|
|
list_for_each_entry_safe(attr, m, attr_list, node) {
|
|
sysfs_remove_file(attr->kobj, &attr->attr);
|
|
list_del(&attr->node);
|
|
kfree(attr);
|
|
};
|
|
list_del_init(attr_list);
|
|
|
|
list_for_each_entry_safe(data, n, kobj_list, node) {
|
|
list_del(&data->node);
|
|
if (data->hdr->id == id_nic)
|
|
sysfs_remove_link(&data->kobj, "device");
|
|
kobject_put(&data->kobj);
|
|
};
|
|
list_del_init(kobj_list);
|
|
}
|
|
|
|
static int __init ibft_create_attribute(struct ibft_kobject *kobj_data,
|
|
int type,
|
|
const char *name,
|
|
ssize_t (*show)(struct ibft_kobject *,
|
|
struct ibft_attribute*,
|
|
char *buf),
|
|
struct list_head *list)
|
|
{
|
|
struct ibft_attribute *attr = NULL;
|
|
struct ibft_hdr *hdr = kobj_data->hdr;
|
|
|
|
attr = kmalloc(sizeof(*attr), GFP_KERNEL);
|
|
if (!attr)
|
|
return -ENOMEM;
|
|
|
|
attr->attr.name = name;
|
|
attr->attr.mode = S_IRUSR;
|
|
|
|
attr->hdr = hdr;
|
|
attr->show = show;
|
|
attr->kobj = &kobj_data->kobj;
|
|
attr->type = type;
|
|
|
|
list_add_tail(&attr->node, list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Helper routiners to check to determine if the entry is valid
|
|
* in the proper iBFT structure.
|
|
*/
|
|
static int __init ibft_check_nic_for(struct ibft_nic *nic, int entry)
|
|
{
|
|
int rc = 0;
|
|
|
|
switch (entry) {
|
|
case ibft_eth_index:
|
|
case ibft_eth_flags:
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_ip_addr:
|
|
if (memcmp(nic->ip_addr, nulls, sizeof(nic->ip_addr)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_subnet_mask:
|
|
if (nic->subnet_mask_prefix)
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_origin:
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_gateway:
|
|
if (memcmp(nic->gateway, nulls, sizeof(nic->gateway)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_primary_dns:
|
|
if (memcmp(nic->primary_dns, nulls,
|
|
sizeof(nic->primary_dns)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_secondary_dns:
|
|
if (memcmp(nic->secondary_dns, nulls,
|
|
sizeof(nic->secondary_dns)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_dhcp:
|
|
if (memcmp(nic->dhcp, nulls, sizeof(nic->dhcp)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_vlan:
|
|
case ibft_eth_mac:
|
|
rc = 1;
|
|
break;
|
|
case ibft_eth_hostname:
|
|
if (nic->hostname_off)
|
|
rc = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int __init ibft_check_tgt_for(struct ibft_tgt *tgt, int entry)
|
|
{
|
|
int rc = 0;
|
|
|
|
switch (entry) {
|
|
case ibft_tgt_index:
|
|
case ibft_tgt_flags:
|
|
case ibft_tgt_ip_addr:
|
|
case ibft_tgt_port:
|
|
case ibft_tgt_lun:
|
|
case ibft_tgt_nic_assoc:
|
|
case ibft_tgt_chap_type:
|
|
rc = 1;
|
|
case ibft_tgt_name:
|
|
if (tgt->tgt_name_len)
|
|
rc = 1;
|
|
break;
|
|
case ibft_tgt_chap_name:
|
|
case ibft_tgt_chap_secret:
|
|
if (tgt->chap_name_len)
|
|
rc = 1;
|
|
break;
|
|
case ibft_tgt_rev_chap_name:
|
|
case ibft_tgt_rev_chap_secret:
|
|
if (tgt->rev_chap_name_len)
|
|
rc = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int __init ibft_check_initiator_for(struct ibft_initiator *init,
|
|
int entry)
|
|
{
|
|
int rc = 0;
|
|
|
|
switch (entry) {
|
|
case ibft_init_index:
|
|
case ibft_init_flags:
|
|
rc = 1;
|
|
break;
|
|
case ibft_init_isns_server:
|
|
if (memcmp(init->isns_server, nulls,
|
|
sizeof(init->isns_server)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_init_slp_server:
|
|
if (memcmp(init->slp_server, nulls,
|
|
sizeof(init->slp_server)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_init_pri_radius_server:
|
|
if (memcmp(init->pri_radius_server, nulls,
|
|
sizeof(init->pri_radius_server)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_init_sec_radius_server:
|
|
if (memcmp(init->sec_radius_server, nulls,
|
|
sizeof(init->sec_radius_server)))
|
|
rc = 1;
|
|
break;
|
|
case ibft_init_initiator_name:
|
|
if (init->initiator_name_len)
|
|
rc = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Register the attributes for all of the kobjects.
|
|
*/
|
|
static int __init ibft_register_attributes(struct list_head *kobject_list,
|
|
struct list_head *attr_list)
|
|
{
|
|
int rc = 0, i = 0;
|
|
struct ibft_kobject *data = NULL;
|
|
struct ibft_attribute *attr = NULL, *m;
|
|
|
|
list_for_each_entry(data, kobject_list, node) {
|
|
switch (data->hdr->id) {
|
|
case id_nic:
|
|
for (i = 0; i < ibft_eth_end_marker && !rc; i++)
|
|
if (ibft_check_nic_for(data->nic, i))
|
|
rc = ibft_create_attribute(data, i,
|
|
ibft_eth_properties[i],
|
|
ibft_attr_show_nic, attr_list);
|
|
break;
|
|
case id_target:
|
|
for (i = 0; i < ibft_tgt_end_marker && !rc; i++)
|
|
if (ibft_check_tgt_for(data->tgt, i))
|
|
rc = ibft_create_attribute(data, i,
|
|
ibft_tgt_properties[i],
|
|
ibft_attr_show_target,
|
|
attr_list);
|
|
break;
|
|
case id_initiator:
|
|
for (i = 0; i < ibft_init_end_marker && !rc; i++)
|
|
if (ibft_check_initiator_for(
|
|
data->initiator, i))
|
|
rc = ibft_create_attribute(data, i,
|
|
ibft_initiator_properties[i],
|
|
ibft_attr_show_initiator,
|
|
attr_list);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (rc)
|
|
break;
|
|
}
|
|
list_for_each_entry_safe(attr, m, attr_list, node) {
|
|
rc = sysfs_create_file(attr->kobj, &attr->attr);
|
|
if (rc) {
|
|
list_del(&attr->node);
|
|
kfree(attr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* ibft_init() - creates sysfs tree entries for the iBFT data.
|
|
*/
|
|
static int __init ibft_init(void)
|
|
{
|
|
int rc = 0;
|
|
|
|
ibft_kset = kset_create_and_add("ibft", NULL, firmware_kobj);
|
|
if (!ibft_kset)
|
|
return -ENOMEM;
|
|
|
|
if (ibft_addr) {
|
|
printk(KERN_INFO "iBFT detected at 0x%llx.\n",
|
|
(u64)virt_to_phys((void *)ibft_addr));
|
|
|
|
rc = ibft_check_device();
|
|
if (rc)
|
|
goto out_firmware_unregister;
|
|
|
|
/* Scan the IBFT for data and register the kobjects. */
|
|
rc = ibft_register_kobjects(ibft_addr, &ibft_kobject_list);
|
|
if (rc)
|
|
goto out_free;
|
|
|
|
/* Register the attributes */
|
|
rc = ibft_register_attributes(&ibft_kobject_list,
|
|
&ibft_attr_list);
|
|
if (rc)
|
|
goto out_free;
|
|
} else
|
|
printk(KERN_INFO "No iBFT detected.\n");
|
|
|
|
return 0;
|
|
|
|
out_free:
|
|
ibft_unregister(&ibft_attr_list, &ibft_kobject_list);
|
|
out_firmware_unregister:
|
|
kset_unregister(ibft_kset);
|
|
return rc;
|
|
}
|
|
|
|
static void __exit ibft_exit(void)
|
|
{
|
|
ibft_unregister(&ibft_attr_list, &ibft_kobject_list);
|
|
kset_unregister(ibft_kset);
|
|
}
|
|
|
|
module_init(ibft_init);
|
|
module_exit(ibft_exit);
|