Gecko [ tsuru-no-tsurugi.tokyo ]

Name	Size	Permission	Date
9p	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
bluetooth	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
caif	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
iucv	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
netfilter	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
netns	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
nfc	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
phonet	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
sctp	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
tc_act	[ DIR ]	drwxr-xr-x	2026-06-27 06:50
6lowpan.h	10.03 KB	-rw-r--r--	2021-11-01 05:53
Space.h	737 B	-rw-r--r--	2021-11-01 05:53
act_api.h	8.44 KB	-rw-r--r--	2026-06-20 00:54
addrconf.h	14.25 KB	-rw-r--r--	2026-06-20 00:54
af_ieee802154.h	1.19 KB	-rw-r--r--	2021-11-01 05:53
af_rxrpc.h	2.73 KB	-rw-r--r--	2021-11-01 05:53
af_unix.h	3.3 KB	-rw-r--r--	2026-06-20 00:54
af_vsock.h	7.41 KB	-rw-r--r--	2026-06-20 00:54
ah.h	382 B	-rw-r--r--	2021-11-01 05:53
arp.h	2.09 KB	-rw-r--r--	2026-06-20 00:54
atmclip.h	1.48 KB	-rw-r--r--	2021-11-01 05:53
ax25.h	15.08 KB	-rw-r--r--	2026-06-20 00:54
ax88796.h	1.41 KB	-rw-r--r--	2021-11-01 05:53
bareudp.h	572 B	-rw-r--r--	2021-11-01 05:53
bond_3ad.h	9.48 KB	-rw-r--r--	2026-06-20 00:54
bond_alb.h	6.1 KB	-rw-r--r--	2026-06-20 00:54
bond_options.h	3.79 KB	-rw-r--r--	2026-06-20 00:54
bonding.h	19.79 KB	-rw-r--r--	2026-06-20 00:54
bpf_sk_storage.h	1.74 KB	-rw-r--r--	2021-11-01 05:53
busy_poll.h	3.87 KB	-rw-r--r--	2026-06-20 00:54
calipso.h	1.55 KB	-rw-r--r--	2021-11-01 05:53
cfg80211-wext.h	1.81 KB	-rw-r--r--	2021-11-01 05:53
cfg80211.h	294.25 KB	-rw-r--r--	2026-06-20 00:54
cfg802154.h	10.53 KB	-rw-r--r--	2026-06-20 00:54
checksum.h	4.75 KB	-rw-r--r--	2026-06-20 00:54
cipso_ipv4.h	7.37 KB	-rw-r--r--	2021-11-01 05:53
cls_cgroup.h	2.04 KB	-rw-r--r--	2026-06-20 00:54
codel.h	5.65 KB	-rw-r--r--	2021-11-01 05:53
codel_impl.h	7.98 KB	-rw-r--r--	2021-11-01 05:53
codel_qdisc.h	2.9 KB	-rw-r--r--	2021-11-01 05:53
compat.h	2.53 KB	-rw-r--r--	2021-11-01 05:53
datalink.h	619 B	-rw-r--r--	2021-11-01 05:53
dcbevent.h	742 B	-rw-r--r--	2021-11-01 05:53
dcbnl.h	4.22 KB	-rw-r--r--	2021-11-01 05:53
devlink.h	62.1 KB	-rw-r--r--	2021-11-01 05:53
dsa.h	35.38 KB	-rw-r--r--	2026-06-20 00:54
dsfield.h	1.12 KB	-rw-r--r--	2021-11-01 05:53
dst.h	14.8 KB	-rw-r--r--	2026-06-20 00:54
dst_cache.h	2.96 KB	-rw-r--r--	2026-06-20 00:54
dst_metadata.h	5.39 KB	-rw-r--r--	2026-06-20 00:54
dst_ops.h	2.08 KB	-rw-r--r--	2026-06-20 00:54
erspan.h	8.96 KB	-rw-r--r--	2021-11-01 05:53
esp.h	1.16 KB	-rw-r--r--	2021-11-01 05:53
espintcp.h	966 B	-rw-r--r--	2021-11-01 05:53
ethoc.h	391 B	-rw-r--r--	2021-11-01 05:53
failover.h	1.15 KB	-rw-r--r--	2021-11-01 05:53
fib_notifier.h	1.35 KB	-rw-r--r--	2021-11-01 05:53
fib_rules.h	6.3 KB	-rw-r--r--	2026-06-20 00:54
firewire.h	636 B	-rw-r--r--	2021-11-01 05:53
flow.h	5 KB	-rw-r--r--	2026-06-20 00:54
flow_dissector.h	10.27 KB	-rw-r--r--	2026-06-20 00:54
flow_offload.h	15.56 KB	-rw-r--r--	2026-06-20 00:54
fou.h	549 B	-rw-r--r--	2021-11-01 05:53
fq.h	2.47 KB	-rw-r--r--	2021-11-01 05:53
fq_impl.h	7.89 KB	-rw-r--r--	2021-11-01 05:53
garp.h	2.62 KB	-rw-r--r--	2021-11-01 05:53
gen_stats.h	2.82 KB	-rw-r--r--	2021-11-01 05:53
genetlink.h	13.53 KB	-rw-r--r--	2026-06-20 00:54
geneve.h	1.85 KB	-rw-r--r--	2021-11-01 05:53
gre.h	3.29 KB	-rw-r--r--	2021-11-01 05:53
gro.h	783 B	-rw-r--r--	2021-11-01 05:53
gro_cells.h	443 B	-rw-r--r--	2021-11-01 05:53
gtp.h	633 B	-rw-r--r--	2021-11-01 05:53
gue.h	3.24 KB	-rw-r--r--	2021-11-01 05:53
hwbm.h	969 B	-rw-r--r--	2021-11-01 05:53
icmp.h	1.87 KB	-rw-r--r--	2021-11-01 05:53
ieee80211_radiotap.h	13.2 KB	-rw-r--r--	2021-11-01 05:53
ieee802154_netdev.h	9.86 KB	-rw-r--r--	2026-06-20 00:54
if_inet6.h	6.54 KB	-rw-r--r--	2026-06-20 00:54
ife.h	1.03 KB	-rw-r--r--	2021-11-01 05:53
ila.h	291 B	-rw-r--r--	2021-11-01 05:53
inet6_connection_sock.h	765 B	-rw-r--r--	2021-11-01 05:53
inet6_hashtables.h	4.16 KB	-rw-r--r--	2026-06-20 00:54
inet_common.h	2.55 KB	-rw-r--r--	2021-11-01 05:53
inet_connection_sock.h	11.25 KB	-rw-r--r--	2026-06-20 00:54
inet_ecn.h	7.45 KB	-rw-r--r--	2021-11-01 05:53
inet_frag.h	4.93 KB	-rw-r--r--	2026-06-20 00:54
inet_hashtables.h	12.24 KB	-rw-r--r--	2026-06-20 00:54
inet_sock.h	9.76 KB	-rw-r--r--	2026-06-20 00:54
inet_timewait_sock.h	3.65 KB	-rw-r--r--	2021-11-01 05:53
inetpeer.h	3.29 KB	-rw-r--r--	2021-11-01 05:53
ioam6.h	1.22 KB	-rw-r--r--	2026-06-20 00:54
ip.h	22.23 KB	-rw-r--r--	2026-06-20 00:54
ip6_checksum.h	2.71 KB	-rw-r--r--	2021-11-01 05:53
ip6_fib.h	15.9 KB	-rw-r--r--	2026-06-20 00:54
ip6_route.h	9.99 KB	-rw-r--r--	2021-11-01 05:53
ip6_tunnel.h	4.98 KB	-rw-r--r--	2026-06-20 00:54
ip_fib.h	15.96 KB	-rw-r--r--	2026-06-20 00:54
ip_tunnels.h	15.58 KB	-rw-r--r--	2026-06-20 00:54
ip_vs.h	49.4 KB	-rw-r--r--	2026-06-20 00:54
ipcomp.h	659 B	-rw-r--r--	2021-11-01 05:53
ipconfig.h	811 B	-rw-r--r--	2021-11-01 05:53
ipv6.h	35.33 KB	-rw-r--r--	2026-06-20 00:54
ipv6_frag.h	3.28 KB	-rw-r--r--	2026-06-20 00:54
ipv6_stubs.h	3.4 KB	-rw-r--r--	2026-06-20 00:54
iw_handler.h	20.91 KB	-rw-r--r--	2021-11-01 05:53
kcm.h	4.84 KB	-rw-r--r--	2026-06-20 00:54
l3mdev.h	7.03 KB	-rw-r--r--	2026-06-20 00:54
lag.h	409 B	-rw-r--r--	2021-11-01 05:53
lapb.h	4.82 KB	-rw-r--r--	2026-06-20 00:54
lib80211.h	3.92 KB	-rw-r--r--	2021-11-01 05:53
llc.h	4.41 KB	-rw-r--r--	2026-06-20 00:54
llc_c_ac.h	9.31 KB	-rw-r--r--	2021-11-01 05:53
llc_c_ev.h	10.68 KB	-rw-r--r--	2021-11-01 05:53
llc_c_st.h	1.72 KB	-rw-r--r--	2021-11-01 05:53
llc_conn.h	4.06 KB	-rw-r--r--	2021-11-01 05:53
llc_if.h	2.16 KB	-rw-r--r--	2021-11-01 05:53
llc_pdu.h	14.35 KB	-rw-r--r--	2026-06-20 00:54
llc_s_ac.h	1.55 KB	-rw-r--r--	2021-11-01 05:53
llc_s_ev.h	2.2 KB	-rw-r--r--	2021-11-01 05:53
llc_s_st.h	947 B	-rw-r--r--	2021-11-01 05:53
llc_sap.h	1.08 KB	-rw-r--r--	2021-11-01 05:53
lwtunnel.h	6.65 KB	-rw-r--r--	2026-06-20 00:54
mac80211.h	267.55 KB	-rw-r--r--	2026-06-20 00:54
mac802154.h	14.88 KB	-rw-r--r--	2021-11-01 05:53
macsec.h	6.92 KB	-rw-r--r--	2026-06-20 00:54
mctp.h	6.01 KB	-rw-r--r--	2026-06-20 00:54
mctpdevice.h	841 B	-rw-r--r--	2026-06-20 00:54
mip6.h	1016 B	-rw-r--r--	2021-11-01 05:53
mld.h	2.85 KB	-rw-r--r--	2021-11-01 05:53
mpls.h	943 B	-rw-r--r--	2021-11-01 05:53
mpls_iptunnel.h	429 B	-rw-r--r--	2021-11-01 05:53
mptcp.h	6.62 KB	-rw-r--r--	2026-06-20 00:54
mrp.h	3.05 KB	-rw-r--r--	2026-06-20 00:54
ncsi.h	1.92 KB	-rw-r--r--	2021-11-01 05:53
ndisc.h	14.79 KB	-rw-r--r--	2026-06-20 00:54
neighbour.h	15.72 KB	-rw-r--r--	2026-06-20 00:54
net_failover.h	1023 B	-rw-r--r--	2021-11-01 05:53
net_namespace.h	12.5 KB	-rw-r--r--	2026-06-20 00:54
net_ratelimit.h	220 B	-rw-r--r--	2021-11-01 05:53
netevent.h	1.02 KB	-rw-r--r--	2021-11-01 05:53
netlabel.h	20.19 KB	-rw-r--r--	2026-06-20 00:54
netlink.h	60.21 KB	-rw-r--r--	2021-11-01 05:53
netprio_cgroup.h	1.02 KB	-rw-r--r--	2021-11-01 05:53
netrom.h	7.71 KB	-rw-r--r--	2021-11-01 05:53
nexthop.h	12.27 KB	-rw-r--r--	2021-11-01 05:53
nl802154.h	12.09 KB	-rw-r--r--	2026-06-20 00:54
nsh.h	12.31 KB	-rw-r--r--	2021-11-01 05:53
p8022.h	447 B	-rw-r--r--	2021-11-01 05:53
page_pool.h	8.44 KB	-rw-r--r--	2026-06-20 00:54
pie.h	3.6 KB	-rw-r--r--	2021-11-01 05:53
ping.h	2.9 KB	-rw-r--r--	2021-11-01 05:53
pkt_cls.h	23.86 KB	-rw-r--r--	2021-11-01 05:53
pkt_sched.h	5.9 KB	-rw-r--r--	2026-06-20 00:54
pptp.h	557 B	-rw-r--r--	2021-11-01 05:53
protocol.h	3.81 KB	-rw-r--r--	2026-06-20 00:54
psample.h	1.06 KB	-rw-r--r--	2021-11-01 05:53
psnap.h	351 B	-rw-r--r--	2021-11-01 05:53
raw.h	2.09 KB	-rw-r--r--	2026-06-20 00:54
rawv6.h	854 B	-rw-r--r--	2021-11-01 05:53
red.h	11.38 KB	-rw-r--r--	2021-11-01 05:53
regulatory.h	10.65 KB	-rw-r--r--	2021-11-01 05:53
request_sock.h	6.5 KB	-rw-r--r--	2026-06-20 00:54
rose.h	7.62 KB	-rw-r--r--	2021-11-01 05:53
route.h	11.31 KB	-rw-r--r--	2026-06-20 00:54
rpl.h	839 B	-rw-r--r--	2026-06-20 00:54
rsi_91x.h	1.67 KB	-rw-r--r--	2021-11-01 05:53
rtnetlink.h	7.46 KB	-rw-r--r--	2026-06-20 00:54
rtnh.h	859 B	-rw-r--r--	2021-11-01 05:53
sch_generic.h	33.91 KB	-rw-r--r--	2026-06-20 00:54
scm.h	3.79 KB	-rw-r--r--	2026-06-20 00:54
secure_seq.h	855 B	-rw-r--r--	2026-06-20 00:54
seg6.h	2.18 KB	-rw-r--r--	2026-06-20 00:54
seg6_hmac.h	1.44 KB	-rw-r--r--	2021-11-01 05:53
seg6_local.h	644 B	-rw-r--r--	2021-11-01 05:53
selftests.h	582 B	-rw-r--r--	2021-11-01 05:53
slhc_vj.h	6.67 KB	-rw-r--r--	2021-11-01 05:53
smc.h	2.45 KB	-rw-r--r--	2021-11-01 05:53
snmp.h	5.14 KB	-rw-r--r--	2021-11-01 05:53
sock.h	84.33 KB	-rw-r--r--	2026-06-20 00:54
sock_reuseport.h	1.83 KB	-rw-r--r--	2026-06-20 00:54
stp.h	383 B	-rw-r--r--	2021-11-01 05:53
strparser.h	4.15 KB	-rw-r--r--	2026-06-20 00:54
switchdev.h	14.27 KB	-rw-r--r--	2026-06-20 00:54
tcp.h	73.48 KB	-rw-r--r--	2026-06-20 00:54
tcp_states.h	1.2 KB	-rw-r--r--	2021-11-01 05:53
timewait_sock.h	925 B	-rw-r--r--	2021-11-01 05:53
tipc.h	2.35 KB	-rw-r--r--	2021-11-01 05:53
tls.h	20.96 KB	-rw-r--r--	2026-06-20 00:54
tls_toe.h	2.94 KB	-rw-r--r--	2021-11-01 05:53
transp_v6.h	1.95 KB	-rw-r--r--	2021-11-01 05:53
tso.h	566 B	-rw-r--r--	2021-11-01 05:53
tun_proto.h	988 B	-rw-r--r--	2021-11-01 05:53
udp.h	16.64 KB	-rw-r--r--	2026-06-20 00:54
udp_tunnel.h	11.92 KB	-rw-r--r--	2026-06-20 00:54
udplite.h	3.67 KB	-rw-r--r--	2026-06-20 00:54
vsock_addr.h	662 B	-rw-r--r--	2021-11-01 05:53
vxlan.h	14.09 KB	-rw-r--r--	2026-06-20 00:54
wext.h	1.47 KB	-rw-r--r--	2021-11-01 05:53
x25.h	9.49 KB	-rw-r--r--	2021-11-01 05:53
x25device.h	387 B	-rw-r--r--	2021-11-01 05:53
xdp.h	8.62 KB	-rw-r--r--	2026-06-20 00:54
xdp_priv.h	446 B	-rw-r--r--	2021-11-01 05:53
xdp_sock.h	2.04 KB	-rw-r--r--	2021-11-01 05:53
xdp_sock_drv.h	5.48 KB	-rw-r--r--	2026-06-20 00:54
xfrm.h	54.98 KB	-rw-r--r--	2026-06-20 00:54
xsk_buff_pool.h	5.02 KB	-rw-r--r--	2026-06-20 00:54

Rename

#ifndef _SLHC_H
#define _SLHC_H
/*
 * Definitions for tcp compression routines.
 *
 * $Header: slcompress.h,v 1.10 89/12/31 08:53:02 van Exp $
 *
 * Copyright (c) 1989 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	Van Jacobson (van@helios.ee.lbl.gov), Dec 31, 1989:
 *	- Initial distribution.
 *
 *
 * modified for KA9Q Internet Software Package by
 * Katie Stevens (dkstevens@ucdavis.edu)
 * University of California, Davis
 * Computing Services
 *	- 01-31-90	initial adaptation
 *
 *	- Feb 1991	Bill_Simpson@um.cc.umich.edu
 *			variable number of conversation slots
 *			allow zero or one slots
 *			separate routines
 *			status display
 */

/*
 * Compressed packet format:
 *
 * The first octet contains the packet type (top 3 bits), TCP
 * 'push' bit, and flags that indicate which of the 4 TCP sequence
 * numbers have changed (bottom 5 bits).  The next octet is a
 * conversation number that associates a saved IP/TCP header with
 * the compressed packet.  The next two octets are the TCP checksum
 * from the original datagram.  The next 0 to 15 octets are
 * sequence number changes, one change per bit set in the header
 * (there may be no changes and there are two special cases where
 * the receiver implicitly knows what changed -- see below).
 *
 * There are 5 numbers which can change (they are always inserted
 * in the following order): TCP urgent pointer, window,
 * acknowledgment, sequence number and IP ID.  (The urgent pointer
 * is different from the others in that its value is sent, not the
 * change in value.)  Since typical use of SLIP links is biased
 * toward small packets (see comments on MTU/MSS below), changes
 * use a variable length coding with one octet for numbers in the
 * range 1 - 255 and 3 octets (0, MSB, LSB) for numbers in the
 * range 256 - 65535 or 0.  (If the change in sequence number or
 * ack is more than 65535, an uncompressed packet is sent.)
 */

/*
 * Packet types (must not conflict with IP protocol version)
 *
 * The top nibble of the first octet is the packet type.  There are
 * three possible types: IP (not proto TCP or tcp with one of the
 * control flags set); uncompressed TCP (a normal IP/TCP packet but
 * with the 8-bit protocol field replaced by an 8-bit connection id --
 * this type of packet syncs the sender & receiver); and compressed
 * TCP (described above).
 *
 * LSB of 4-bit field is TCP "PUSH" bit (a worthless anachronism) and
 * is logically part of the 4-bit "changes" field that follows.  Top
 * three bits are actual packet type.  For backward compatibility
 * and in the interest of conserving bits, numbers are chosen so the
 * IP protocol version number (4) which normally appears in this nibble
 * means "IP packet".
 */

#include <linux/ip.h>
#include <linux/tcp.h>

/* SLIP compression masks for len/vers byte */
#define SL_TYPE_IP 0x40
#define SL_TYPE_UNCOMPRESSED_TCP 0x70
#define SL_TYPE_COMPRESSED_TCP 0x80
#define SL_TYPE_ERROR 0x00

/* Bits in first octet of compressed packet */
#define NEW_C	0x40	/* flag bits for what changed in a packet */
#define NEW_I	0x20
#define NEW_S	0x08
#define NEW_A	0x04
#define NEW_W	0x02
#define NEW_U	0x01

/* reserved, special-case values of above */
#define SPECIAL_I (NEW_S|NEW_W|NEW_U)		/* echoed interactive traffic */
#define SPECIAL_D (NEW_S|NEW_A|NEW_W|NEW_U)	/* unidirectional data */
#define SPECIALS_MASK (NEW_S|NEW_A|NEW_W|NEW_U)

#define TCP_PUSH_BIT 0x10

/*
 * data type and sizes conversion assumptions:
 *
 *	VJ code		KA9Q style	generic
 *	u_char		byte_t		unsigned char	 8 bits
 *	u_short		int16		unsigned short	16 bits
 *	u_int		int16		unsigned short	16 bits
 *	u_long		unsigned long	unsigned long	32 bits
 *	int		int32		long		32 bits
 */

typedef __u8 byte_t;
typedef __u32 int32;

/*
 * "state" data for each active tcp conversation on the wire.  This is
 * basically a copy of the entire IP/TCP header from the last packet
 * we saw from the conversation together with a small identifier
 * the transmit & receive ends of the line use to locate saved header.
 */
struct cstate {
	byte_t	cs_this;	/* connection id number (xmit) */
	bool	initialized;	/* true if initialized */
	struct cstate *next;	/* next in ring (xmit) */
	struct iphdr cs_ip;	/* ip/tcp hdr from most recent packet */
	struct tcphdr cs_tcp;
	unsigned char cs_ipopt[64];
	unsigned char cs_tcpopt[64];
	int cs_hsize;
};
#define NULLSLSTATE	(struct cstate *)0

/*
 * all the state data for one serial line (we need one of these per line).
 */
struct slcompress {
	struct cstate *tstate;	/* transmit connection states (array)*/
	struct cstate *rstate;	/* receive connection states (array)*/

byte_t tslot_limit;	/* highest transmit slot id (0-l)*/
	byte_t rslot_limit;	/* highest receive slot id (0-l)*/

byte_t xmit_oldest;	/* oldest xmit in ring */
	byte_t xmit_current;	/* most recent xmit id */
	byte_t recv_current;	/* most recent rcvd id */

byte_t flags;
#define SLF_TOSS	0x01	/* tossing rcvd frames until id received */

int32 sls_o_nontcp;	/* outbound non-TCP packets */
	int32 sls_o_tcp;	/* outbound TCP packets */
	int32 sls_o_uncompressed;	/* outbound uncompressed packets */
	int32 sls_o_compressed;	/* outbound compressed packets */
	int32 sls_o_searches;	/* searches for connection state */
	int32 sls_o_misses;	/* times couldn't find conn. state */

int32 sls_i_uncompressed;	/* inbound uncompressed packets */
	int32 sls_i_compressed;	/* inbound compressed packets */
	int32 sls_i_error;	/* inbound error packets */
	int32 sls_i_tossed;	/* inbound packets tossed because of error */

int32 sls_i_runt;
	int32 sls_i_badcheck;
};
#define NULLSLCOMPR	(struct slcompress *)0

/* In slhc.c: */
struct slcompress *slhc_init(int rslots, int tslots);
void slhc_free(struct slcompress *comp);

int slhc_compress(struct slcompress *comp, unsigned char *icp, int isize,
		  unsigned char *ocp, unsigned char **cpp, int compress_cid);
int slhc_uncompress(struct slcompress *comp, unsigned char *icp, int isize);
int slhc_remember(struct slcompress *comp, unsigned char *icp, int isize);
int slhc_toss(struct slcompress *comp);

#endif	/* _SLHC_H */