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![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
243 lines
5.9 KiB
C
243 lines
5.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SBP_BASE_H
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#define _SBP_BASE_H
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#include <linux/firewire.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include <linux/workqueue.h>
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#include <target/target_core_base.h>
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#define SBP_VERSION "v0.1"
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#define SBP_NAMELEN 32
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#define SBP_ORB_FETCH_SIZE 8
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#define MANAGEMENT_AGENT_STATE_IDLE 0
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#define MANAGEMENT_AGENT_STATE_BUSY 1
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#define ORB_NOTIFY(v) (((v) >> 31) & 0x01)
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#define ORB_REQUEST_FORMAT(v) (((v) >> 29) & 0x03)
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#define MANAGEMENT_ORB_FUNCTION(v) (((v) >> 16) & 0x0f)
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#define MANAGEMENT_ORB_FUNCTION_LOGIN 0x0
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#define MANAGEMENT_ORB_FUNCTION_QUERY_LOGINS 0x1
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#define MANAGEMENT_ORB_FUNCTION_RECONNECT 0x3
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#define MANAGEMENT_ORB_FUNCTION_SET_PASSWORD 0x4
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#define MANAGEMENT_ORB_FUNCTION_LOGOUT 0x7
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#define MANAGEMENT_ORB_FUNCTION_ABORT_TASK 0xb
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#define MANAGEMENT_ORB_FUNCTION_ABORT_TASK_SET 0xc
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#define MANAGEMENT_ORB_FUNCTION_LOGICAL_UNIT_RESET 0xe
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#define MANAGEMENT_ORB_FUNCTION_TARGET_RESET 0xf
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#define LOGIN_ORB_EXCLUSIVE(v) (((v) >> 28) & 0x01)
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#define LOGIN_ORB_RESERVED(v) (((v) >> 24) & 0x0f)
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#define LOGIN_ORB_RECONNECT(v) (((v) >> 20) & 0x0f)
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#define LOGIN_ORB_LUN(v) (((v) >> 0) & 0xffff)
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#define LOGIN_ORB_PASSWORD_LENGTH(v) (((v) >> 16) & 0xffff)
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#define LOGIN_ORB_RESPONSE_LENGTH(v) (((v) >> 0) & 0xffff)
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#define RECONNECT_ORB_LOGIN_ID(v) (((v) >> 0) & 0xffff)
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#define LOGOUT_ORB_LOGIN_ID(v) (((v) >> 0) & 0xffff)
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#define CMDBLK_ORB_DIRECTION(v) (((v) >> 27) & 0x01)
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#define CMDBLK_ORB_SPEED(v) (((v) >> 24) & 0x07)
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#define CMDBLK_ORB_MAX_PAYLOAD(v) (((v) >> 20) & 0x0f)
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#define CMDBLK_ORB_PG_TBL_PRESENT(v) (((v) >> 19) & 0x01)
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#define CMDBLK_ORB_PG_SIZE(v) (((v) >> 16) & 0x07)
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#define CMDBLK_ORB_DATA_SIZE(v) (((v) >> 0) & 0xffff)
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#define STATUS_BLOCK_SRC(v) (((v) & 0x03) << 30)
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#define STATUS_BLOCK_RESP(v) (((v) & 0x03) << 28)
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#define STATUS_BLOCK_DEAD(v) (((v) ? 1 : 0) << 27)
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#define STATUS_BLOCK_LEN(v) (((v) & 0x07) << 24)
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#define STATUS_BLOCK_SBP_STATUS(v) (((v) & 0xff) << 16)
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#define STATUS_BLOCK_ORB_OFFSET_HIGH(v) (((v) & 0xffff) << 0)
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#define STATUS_SRC_ORB_CONTINUING 0
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#define STATUS_SRC_ORB_FINISHED 1
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#define STATUS_SRC_UNSOLICITED 2
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#define STATUS_RESP_REQUEST_COMPLETE 0
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#define STATUS_RESP_TRANSPORT_FAILURE 1
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#define STATUS_RESP_ILLEGAL_REQUEST 2
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#define STATUS_RESP_VENDOR_DEPENDENT 3
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#define SBP_STATUS_OK 0
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#define SBP_STATUS_REQ_TYPE_NOTSUPP 1
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#define SBP_STATUS_SPEED_NOTSUPP 2
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#define SBP_STATUS_PAGE_SIZE_NOTSUPP 3
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#define SBP_STATUS_ACCESS_DENIED 4
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#define SBP_STATUS_LUN_NOTSUPP 5
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#define SBP_STATUS_PAYLOAD_TOO_SMALL 6
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/* 7 is reserved */
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#define SBP_STATUS_RESOURCES_UNAVAIL 8
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#define SBP_STATUS_FUNCTION_REJECTED 9
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#define SBP_STATUS_LOGIN_ID_UNKNOWN 10
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#define SBP_STATUS_DUMMY_ORB_COMPLETE 11
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#define SBP_STATUS_REQUEST_ABORTED 12
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#define SBP_STATUS_UNSPECIFIED_ERROR 0xff
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#define AGENT_STATE_RESET 0
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#define AGENT_STATE_ACTIVE 1
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#define AGENT_STATE_SUSPENDED 2
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#define AGENT_STATE_DEAD 3
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struct sbp2_pointer {
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__be32 high;
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__be32 low;
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};
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struct sbp_command_block_orb {
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struct sbp2_pointer next_orb;
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struct sbp2_pointer data_descriptor;
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__be32 misc;
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u8 command_block[12];
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};
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struct sbp_page_table_entry {
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__be16 segment_length;
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__be16 segment_base_hi;
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__be32 segment_base_lo;
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};
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struct sbp_management_orb {
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struct sbp2_pointer ptr1;
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struct sbp2_pointer ptr2;
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__be32 misc;
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__be32 length;
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struct sbp2_pointer status_fifo;
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};
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struct sbp_status_block {
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__be32 status;
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__be32 orb_low;
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u8 data[24];
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};
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struct sbp_login_response_block {
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__be32 misc;
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struct sbp2_pointer command_block_agent;
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__be32 reconnect_hold;
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};
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struct sbp_login_descriptor {
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struct sbp_session *sess;
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struct list_head link;
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u32 login_lun;
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u64 status_fifo_addr;
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int exclusive;
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u16 login_id;
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struct sbp_target_agent *tgt_agt;
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};
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struct sbp_session {
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spinlock_t lock;
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struct se_session *se_sess;
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struct list_head login_list;
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struct delayed_work maint_work;
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u64 guid; /* login_owner_EUI_64 */
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int node_id; /* login_owner_ID */
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struct fw_card *card;
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int generation;
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int speed;
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int reconnect_hold;
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u64 reconnect_expires;
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};
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struct sbp_tpg {
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/* Target portal group tag for TCM */
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u16 tport_tpgt;
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/* Pointer back to sbp_tport */
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struct sbp_tport *tport;
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/* Returned by sbp_make_tpg() */
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struct se_portal_group se_tpg;
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};
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struct sbp_tport {
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/* Target Unit Identifier (EUI-64) */
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u64 guid;
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/* Target port name */
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char tport_name[SBP_NAMELEN];
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/* Returned by sbp_make_tport() */
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struct se_wwn tport_wwn;
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struct sbp_tpg *tpg;
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/* FireWire unit directory */
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struct fw_descriptor unit_directory;
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/* SBP Management Agent */
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struct sbp_management_agent *mgt_agt;
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/* Parameters */
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int enable;
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s32 directory_id;
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int mgt_orb_timeout;
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int max_reconnect_timeout;
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int max_logins_per_lun;
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};
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static inline u64 sbp2_pointer_to_addr(const struct sbp2_pointer *ptr)
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{
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return (u64)(be32_to_cpu(ptr->high) & 0x0000ffff) << 32 |
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(be32_to_cpu(ptr->low) & 0xfffffffc);
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}
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static inline void addr_to_sbp2_pointer(u64 addr, struct sbp2_pointer *ptr)
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{
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ptr->high = cpu_to_be32(addr >> 32);
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ptr->low = cpu_to_be32(addr);
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}
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struct sbp_target_agent {
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spinlock_t lock;
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struct fw_address_handler handler;
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struct sbp_login_descriptor *login;
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int state;
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struct work_struct work;
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u64 orb_pointer;
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bool doorbell;
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};
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struct sbp_target_request {
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struct sbp_login_descriptor *login;
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u64 orb_pointer;
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struct sbp_command_block_orb orb;
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struct sbp_status_block status;
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struct work_struct work;
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struct se_cmd se_cmd;
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struct sbp_page_table_entry *pg_tbl;
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void *cmd_buf;
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unsigned char sense_buf[TRANSPORT_SENSE_BUFFER];
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};
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struct sbp_management_agent {
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spinlock_t lock;
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struct sbp_tport *tport;
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struct fw_address_handler handler;
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int state;
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struct work_struct work;
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u64 orb_offset;
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struct sbp_management_request *request;
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};
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struct sbp_management_request {
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struct sbp_management_orb orb;
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struct sbp_status_block status;
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struct fw_card *card;
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int generation;
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int node_addr;
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int speed;
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};
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#endif
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