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linux/include/net/netrom.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

272 lines
7.7 KiB
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Declarations of NET/ROM type objects.
*
* Jonathan Naylor G4KLX 9/4/95
*/
#ifndef _NETROM_H
#define _NETROM_H
#include <linux/netrom.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <net/sock.h>
#include <linux/refcount.h>
#define NR_NETWORK_LEN 15
#define NR_TRANSPORT_LEN 5
#define NR_PROTO_IP 0x0C
#define NR_PROTOEXT 0x00
#define NR_CONNREQ 0x01
#define NR_CONNACK 0x02
#define NR_DISCREQ 0x03
#define NR_DISCACK 0x04
#define NR_INFO 0x05
#define NR_INFOACK 0x06
#define NR_RESET 0x07
#define NR_CHOKE_FLAG 0x80
#define NR_NAK_FLAG 0x40
#define NR_MORE_FLAG 0x20
/* Define Link State constants. */
enum {
NR_STATE_0,
NR_STATE_1,
NR_STATE_2,
NR_STATE_3
};
#define NR_COND_ACK_PENDING 0x01
#define NR_COND_REJECT 0x02
#define NR_COND_PEER_RX_BUSY 0x04
#define NR_COND_OWN_RX_BUSY 0x08
#define NR_DEFAULT_T1 120000 /* Outstanding frames - 120 seconds */
#define NR_DEFAULT_T2 5000 /* Response delay - 5 seconds */
#define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
#define NR_DEFAULT_T4 180000 /* Busy Delay - 180 seconds */
#define NR_DEFAULT_IDLE 0 /* No Activity Timeout - none */
#define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
#define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
#define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
#define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
#define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
#define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
#define NR_DEFAULT_RESET 0 /* Sent / accept reset cmds? */
#define NR_MODULUS 256
#define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
#define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
struct nr_sock {
struct sock sock;
ax25_address user_addr, source_addr, dest_addr;
struct net_device *device;
unsigned char my_index, my_id;
unsigned char your_index, your_id;
unsigned char state, condition, bpqext, window;
unsigned short vs, vr, va, vl;
unsigned char n2, n2count;
unsigned long t1, t2, t4, idle;
unsigned short fraglen;
struct timer_list t1timer;
struct timer_list t2timer;
struct timer_list t4timer;
struct timer_list idletimer;
struct sk_buff_head ack_queue;
struct sk_buff_head reseq_queue;
struct sk_buff_head frag_queue;
};
#define nr_sk(sk) ((struct nr_sock *)(sk))
struct nr_neigh {
struct hlist_node neigh_node;
ax25_address callsign;
ax25_digi *digipeat;
ax25_cb *ax25;
struct net_device *dev;
unsigned char quality;
unsigned char locked;
unsigned short count;
unsigned int number;
unsigned char failed;
refcount_t refcount;
};
struct nr_route {
unsigned char quality;
unsigned char obs_count;
struct nr_neigh *neighbour;
};
struct nr_node {
struct hlist_node node_node;
ax25_address callsign;
char mnemonic[7];
unsigned char which;
unsigned char count;
struct nr_route routes[3];
refcount_t refcount;
spinlock_t node_lock;
};
/*********************************************************************
* nr_node & nr_neigh lists, refcounting and locking
*********************************************************************/
#define nr_node_hold(__nr_node) \
refcount_inc(&((__nr_node)->refcount))
static __inline__ void nr_node_put(struct nr_node *nr_node)
{
if (refcount_dec_and_test(&nr_node->refcount)) {
kfree(nr_node);
}
}
#define nr_neigh_hold(__nr_neigh) \
refcount_inc(&((__nr_neigh)->refcount))
static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh)
{
if (refcount_dec_and_test(&nr_neigh->refcount)) {
if (nr_neigh->ax25)
ax25_cb_put(nr_neigh->ax25);
kfree(nr_neigh->digipeat);
kfree(nr_neigh);
}
}
/* nr_node_lock and nr_node_unlock also hold/put the node's refcounter.
*/
static __inline__ void nr_node_lock(struct nr_node *nr_node)
{
nr_node_hold(nr_node);
spin_lock_bh(&nr_node->node_lock);
}
static __inline__ void nr_node_unlock(struct nr_node *nr_node)
{
spin_unlock_bh(&nr_node->node_lock);
nr_node_put(nr_node);
}
#define nr_neigh_for_each(__nr_neigh, list) \
hlist_for_each_entry(__nr_neigh, list, neigh_node)
#define nr_neigh_for_each_safe(__nr_neigh, node2, list) \
hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node)
#define nr_node_for_each(__nr_node, list) \
hlist_for_each_entry(__nr_node, list, node_node)
#define nr_node_for_each_safe(__nr_node, node2, list) \
hlist_for_each_entry_safe(__nr_node, node2, list, node_node)
/*********************************************************************/
/* af_netrom.c */
extern int sysctl_netrom_default_path_quality;
extern int sysctl_netrom_obsolescence_count_initialiser;
extern int sysctl_netrom_network_ttl_initialiser;
extern int sysctl_netrom_transport_timeout;
extern int sysctl_netrom_transport_maximum_tries;
extern int sysctl_netrom_transport_acknowledge_delay;
extern int sysctl_netrom_transport_busy_delay;
extern int sysctl_netrom_transport_requested_window_size;
extern int sysctl_netrom_transport_no_activity_timeout;
extern int sysctl_netrom_routing_control;
extern int sysctl_netrom_link_fails_count;
extern int sysctl_netrom_reset_circuit;
int nr_rx_frame(struct sk_buff *, struct net_device *);
void nr_destroy_socket(struct sock *);
/* nr_dev.c */
int nr_rx_ip(struct sk_buff *, struct net_device *);
void nr_setup(struct net_device *);
/* nr_in.c */
int nr_process_rx_frame(struct sock *, struct sk_buff *);
/* nr_loopback.c */
void nr_loopback_init(void);
void nr_loopback_clear(void);
int nr_loopback_queue(struct sk_buff *);
/* nr_out.c */
void nr_output(struct sock *, struct sk_buff *);
void nr_send_nak_frame(struct sock *);
void nr_kick(struct sock *);
void nr_transmit_buffer(struct sock *, struct sk_buff *);
void nr_establish_data_link(struct sock *);
void nr_enquiry_response(struct sock *);
void nr_check_iframes_acked(struct sock *, unsigned short);
/* nr_route.c */
void nr_rt_device_down(struct net_device *);
struct net_device *nr_dev_first(void);
struct net_device *nr_dev_get(ax25_address *);
int nr_rt_ioctl(unsigned int, void __user *);
void nr_link_failed(ax25_cb *, int);
int nr_route_frame(struct sk_buff *, ax25_cb *);
extern const struct file_operations nr_nodes_fops;
extern const struct file_operations nr_neigh_fops;
void nr_rt_free(void);
/* nr_subr.c */
void nr_clear_queues(struct sock *);
void nr_frames_acked(struct sock *, unsigned short);
void nr_requeue_frames(struct sock *);
int nr_validate_nr(struct sock *, unsigned short);
int nr_in_rx_window(struct sock *, unsigned short);
void nr_write_internal(struct sock *, int);
void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags);
/*
* This routine is called when a Connect Acknowledge with the Choke Flag
* set is needed to refuse a connection.
*/
#define nr_transmit_refusal(skb, mine) \
do { \
__nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \
} while (0)
/*
* This routine is called when we don't have a circuit matching an incoming
* NET/ROM packet. This is an G8PZT Xrouter extension.
*/
#define nr_transmit_reset(skb, mine) \
do { \
__nr_transmit_reply((skb), (mine), NR_RESET); \
} while (0)
void nr_disconnect(struct sock *, int);
/* nr_timer.c */
void nr_init_timers(struct sock *sk);
void nr_start_heartbeat(struct sock *);
void nr_start_t1timer(struct sock *);
void nr_start_t2timer(struct sock *);
void nr_start_t4timer(struct sock *);
void nr_start_idletimer(struct sock *);
void nr_stop_heartbeat(struct sock *);
void nr_stop_t1timer(struct sock *);
void nr_stop_t2timer(struct sock *);
void nr_stop_t4timer(struct sock *);
void nr_stop_idletimer(struct sock *);
int nr_t1timer_running(struct sock *);
/* sysctl_net_netrom.c */
void nr_register_sysctl(void);
void nr_unregister_sysctl(void);
#endif
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