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linux/drivers/s390/net/ctcm_mpc.h
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
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>
2017-11-02 11:10:55 +01:00

240 lines
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright IBM Corp. 2007
* Authors: Peter Tiedemann (ptiedem@de.ibm.com)
*
* MPC additions:
* Belinda Thompson (belindat@us.ibm.com)
* Andy Richter (richtera@us.ibm.com)
*/
#ifndef _CTC_MPC_H_
#define _CTC_MPC_H_
#include <linux/interrupt.h>
#include <linux/skbuff.h>
#include "fsm.h"
/*
* MPC external interface
* Note that ctc_mpc_xyz are called with a lock on ................
*/
/* port_number is the mpc device 0, 1, 2 etc mpc2 is port_number 2 */
/* passive open Just wait for XID2 exchange */
extern int ctc_mpc_alloc_channel(int port,
void (*callback)(int port_num, int max_write_size));
/* active open Alloc then send XID2 */
extern void ctc_mpc_establish_connectivity(int port,
void (*callback)(int port_num, int rc, int max_write_size));
extern void ctc_mpc_dealloc_ch(int port);
extern void ctc_mpc_flow_control(int port, int flowc);
/*
* other MPC Group prototypes and structures
*/
#define ETH_P_SNA_DIX 0x80D5
/*
* Declaration of an XID2
*
*/
#define ALLZEROS 0x0000000000000000
#define XID_FM2 0x20
#define XID2_0 0x00
#define XID2_7 0x07
#define XID2_WRITE_SIDE 0x04
#define XID2_READ_SIDE 0x05
struct xid2 {
__u8 xid2_type_id;
__u8 xid2_len;
__u32 xid2_adj_id;
__u8 xid2_rlen;
__u8 xid2_resv1;
__u8 xid2_flag1;
__u8 xid2_fmtt;
__u8 xid2_flag4;
__u16 xid2_resv2;
__u8 xid2_tgnum;
__u32 xid2_sender_id;
__u8 xid2_flag2;
__u8 xid2_option;
char xid2_resv3[8];
__u16 xid2_resv4;
__u8 xid2_dlc_type;
__u16 xid2_resv5;
__u8 xid2_mpc_flag;
__u8 xid2_resv6;
__u16 xid2_buf_len;
char xid2_buffer[255 - (13 * sizeof(__u8) +
2 * sizeof(__u32) +
4 * sizeof(__u16) +
8 * sizeof(char))];
} __attribute__ ((packed));
#define XID2_LENGTH (sizeof(struct xid2))
struct th_header {
__u8 th_seg;
__u8 th_ch_flag;
#define TH_HAS_PDU 0xf0
#define TH_IS_XID 0x01
#define TH_SWEEP_REQ 0xfe
#define TH_SWEEP_RESP 0xff
__u8 th_blk_flag;
#define TH_DATA_IS_XID 0x80
#define TH_RETRY 0x40
#define TH_DISCONTACT 0xc0
#define TH_SEG_BLK 0x20
#define TH_LAST_SEG 0x10
#define TH_PDU_PART 0x08
__u8 th_is_xid; /* is 0x01 if this is XID */
__u32 th_seq_num;
} __attribute__ ((packed));
struct th_addon {
__u32 th_last_seq;
__u32 th_resvd;
} __attribute__ ((packed));
struct th_sweep {
struct th_header th;
struct th_addon sw;
} __attribute__ ((packed));
#define TH_HEADER_LENGTH (sizeof(struct th_header))
#define TH_SWEEP_LENGTH (sizeof(struct th_sweep))
#define PDU_LAST 0x80
#define PDU_CNTL 0x40
#define PDU_FIRST 0x20
struct pdu {
__u32 pdu_offset;
__u8 pdu_flag;
__u8 pdu_proto; /* 0x01 is APPN SNA */
__u16 pdu_seq;
} __attribute__ ((packed));
#define PDU_HEADER_LENGTH (sizeof(struct pdu))
struct qllc {
__u8 qllc_address;
#define QLLC_REQ 0xFF
#define QLLC_RESP 0x00
__u8 qllc_commands;
#define QLLC_DISCONNECT 0x53
#define QLLC_UNSEQACK 0x73
#define QLLC_SETMODE 0x93
#define QLLC_EXCHID 0xBF
} __attribute__ ((packed));
/*
* Definition of one MPC group
*/
#define MAX_MPCGCHAN 10
#define MPC_XID_TIMEOUT_VALUE 10000
#define MPC_CHANNEL_ADD 0
#define MPC_CHANNEL_REMOVE 1
#define MPC_CHANNEL_ATTN 2
#define XSIDE 1
#define YSIDE 0
struct mpcg_info {
struct sk_buff *skb;
struct channel *ch;
struct xid2 *xid;
struct th_sweep *sweep;
struct th_header *th;
};
struct mpc_group {
struct tasklet_struct mpc_tasklet;
struct tasklet_struct mpc_tasklet2;
int changed_side;
int saved_state;
int channels_terminating;
int out_of_sequence;
int flow_off_called;
int port_num;
int port_persist;
int alloc_called;
__u32 xid2_adj_id;
__u8 xid2_tgnum;
__u32 xid2_sender_id;
int num_channel_paths;
int active_channels[2];
__u16 group_max_buflen;
int outstanding_xid2;
int outstanding_xid7;
int outstanding_xid7_p2;
int sweep_req_pend_num;
int sweep_rsp_pend_num;
struct sk_buff *xid_skb;
char *xid_skb_data;
struct th_header *xid_th;
struct xid2 *xid;
char *xid_id;
struct th_header *rcvd_xid_th;
struct sk_buff *rcvd_xid_skb;
char *rcvd_xid_data;
__u8 in_sweep;
__u8 roll;
struct xid2 *saved_xid2;
void (*allochanfunc)(int, int);
int allocchan_callback_retries;
void (*estconnfunc)(int, int, int);
int estconn_callback_retries;
int estconn_called;
int xidnogood;
int send_qllc_disc;
fsm_timer timer;
fsm_instance *fsm; /* group xid fsm */
};
#ifdef DEBUGDATA
void ctcmpc_dumpit(char *buf, int len);
#else
static inline void ctcmpc_dumpit(char *buf, int len)
{
}
#endif
#ifdef DEBUGDATA
/*
* Dump header and first 16 bytes of an sk_buff for debugging purposes.
*
* skb The struct sk_buff to dump.
* offset Offset relative to skb-data, where to start the dump.
*/
void ctcmpc_dump_skb(struct sk_buff *skb, int offset);
#else
static inline void ctcmpc_dump_skb(struct sk_buff *skb, int offset)
{}
#endif
static inline void ctcmpc_dump32(char *buf, int len)
{
if (len < 32)
ctcmpc_dumpit(buf, len);
else
ctcmpc_dumpit(buf, 32);
}
int ctcmpc_open(struct net_device *);
void ctcm_ccw_check_rc(struct channel *, int, char *);
void mpc_group_ready(unsigned long adev);
void mpc_channel_action(struct channel *ch, int direction, int action);
void mpc_action_send_discontact(unsigned long thischan);
void mpc_action_discontact(fsm_instance *fi, int event, void *arg);
void ctcmpc_bh(unsigned long thischan);
#endif
/* --- This is the END my friend --- */
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