linux/include/net/ipx.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

177 lines
4.4 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NET_INET_IPX_H_
#define _NET_INET_IPX_H_
/*
* The following information is in its entirety obtained from:
*
* Novell 'IPX Router Specification' Version 1.10
* Part No. 107-000029-001
*
* Which is available from ftp.novell.com
*/
#include <linux/netdevice.h>
#include <net/datalink.h>
#include <linux/ipx.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/refcount.h>
struct ipx_address {
__be32 net;
__u8 node[IPX_NODE_LEN];
__be16 sock;
};
#define ipx_broadcast_node "\377\377\377\377\377\377"
#define ipx_this_node "\0\0\0\0\0\0"
#define IPX_MAX_PPROP_HOPS 8
struct ipxhdr {
__be16 ipx_checksum __packed;
#define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF)
__be16 ipx_pktsize __packed;
__u8 ipx_tctrl;
__u8 ipx_type;
#define IPX_TYPE_UNKNOWN 0x00
#define IPX_TYPE_RIP 0x01 /* may also be 0 */
#define IPX_TYPE_SAP 0x04 /* may also be 0 */
#define IPX_TYPE_SPX 0x05 /* SPX protocol */
#define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */
#define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */
struct ipx_address ipx_dest __packed;
struct ipx_address ipx_source __packed;
};
/* From af_ipx.c */
extern int sysctl_ipx_pprop_broadcasting;
static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb)
{
return (struct ipxhdr *)skb_transport_header(skb);
}
struct ipx_interface {
/* IPX address */
__be32 if_netnum;
unsigned char if_node[IPX_NODE_LEN];
refcount_t refcnt;
/* physical device info */
struct net_device *if_dev;
struct datalink_proto *if_dlink;
__be16 if_dlink_type;
/* socket support */
unsigned short if_sknum;
struct hlist_head if_sklist;
spinlock_t if_sklist_lock;
/* administrative overhead */
int if_ipx_offset;
unsigned char if_internal;
unsigned char if_primary;
struct list_head node; /* node in ipx_interfaces list */
};
struct ipx_route {
__be32 ir_net;
struct ipx_interface *ir_intrfc;
unsigned char ir_routed;
unsigned char ir_router_node[IPX_NODE_LEN];
struct list_head node; /* node in ipx_routes list */
refcount_t refcnt;
};
struct ipx_cb {
u8 ipx_tctrl;
__be32 ipx_dest_net;
__be32 ipx_source_net;
struct {
__be32 netnum;
int index;
} last_hop;
};
#include <net/sock.h>
struct ipx_sock {
/* struct sock has to be the first member of ipx_sock */
struct sock sk;
struct ipx_address dest_addr;
struct ipx_interface *intrfc;
__be16 port;
#ifdef CONFIG_IPX_INTERN
unsigned char node[IPX_NODE_LEN];
#endif
unsigned short type;
/*
* To handle special ncp connection-handling sockets for mars_nwe,
* the connection number must be stored in the socket.
*/
unsigned short ipx_ncp_conn;
};
static inline struct ipx_sock *ipx_sk(struct sock *sk)
{
return (struct ipx_sock *)sk;
}
#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))
#define IPX_MIN_EPHEMERAL_SOCKET 0x4000
#define IPX_MAX_EPHEMERAL_SOCKET 0x7fff
extern struct list_head ipx_routes;
extern rwlock_t ipx_routes_lock;
extern struct list_head ipx_interfaces;
struct ipx_interface *ipx_interfaces_head(void);
extern spinlock_t ipx_interfaces_lock;
extern struct ipx_interface *ipx_primary_net;
int ipx_proc_init(void);
void ipx_proc_exit(void);
const char *ipx_frame_name(__be16);
const char *ipx_device_name(struct ipx_interface *intrfc);
static __inline__ void ipxitf_hold(struct ipx_interface *intrfc)
{
refcount_inc(&intrfc->refcnt);
}
void ipxitf_down(struct ipx_interface *intrfc);
struct ipx_interface *ipxitf_find_using_net(__be32 net);
int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb, char *node);
__be16 ipx_cksum(struct ipxhdr *packet, int length);
int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc,
unsigned char *node);
void ipxrtr_del_routes(struct ipx_interface *intrfc);
int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
struct msghdr *msg, size_t len, int noblock);
int ipxrtr_route_skb(struct sk_buff *skb);
struct ipx_route *ipxrtr_lookup(__be32 net);
int ipxrtr_ioctl(unsigned int cmd, void __user *arg);
static __inline__ void ipxitf_put(struct ipx_interface *intrfc)
{
if (refcount_dec_and_test(&intrfc->refcnt))
ipxitf_down(intrfc);
}
static __inline__ void ipxrtr_hold(struct ipx_route *rt)
{
refcount_inc(&rt->refcnt);
}
static __inline__ void ipxrtr_put(struct ipx_route *rt)
{
if (refcount_dec_and_test(&rt->refcnt))
kfree(rt);
}
#endif /* _NET_INET_IPX_H_ */