After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
660 lines
19 KiB
C
660 lines
19 KiB
C
/*
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* Connection tracking protocol helper module for SCTP.
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*
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* SCTP is defined in RFC 2960. References to various sections in this code
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* are to this RFC.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/*
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* Added support for proc manipulation of timeouts.
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*/
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#include <linux/types.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/netfilter.h>
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#include <linux/module.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/sctp.h>
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#include <linux/string.h>
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#include <linux/seq_file.h>
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#include <linux/netfilter_ipv4/ip_conntrack.h>
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#include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
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#if 0
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#define DEBUGP(format, ...) printk(format, ## __VA_ARGS__)
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#else
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#define DEBUGP(format, args...)
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#endif
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/* Protects conntrack->proto.sctp */
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static DEFINE_RWLOCK(sctp_lock);
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/* FIXME: Examine ipfilter's timeouts and conntrack transitions more
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closely. They're more complex. --RR
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And so for me for SCTP :D -Kiran */
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static const char *sctp_conntrack_names[] = {
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"NONE",
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"CLOSED",
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"COOKIE_WAIT",
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"COOKIE_ECHOED",
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"ESTABLISHED",
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"SHUTDOWN_SENT",
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"SHUTDOWN_RECD",
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"SHUTDOWN_ACK_SENT",
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};
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#define SECS * HZ
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#define MINS * 60 SECS
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#define HOURS * 60 MINS
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#define DAYS * 24 HOURS
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static unsigned int ip_ct_sctp_timeout_closed __read_mostly = 10 SECS;
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static unsigned int ip_ct_sctp_timeout_cookie_wait __read_mostly = 3 SECS;
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static unsigned int ip_ct_sctp_timeout_cookie_echoed __read_mostly = 3 SECS;
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static unsigned int ip_ct_sctp_timeout_established __read_mostly = 5 DAYS;
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static unsigned int ip_ct_sctp_timeout_shutdown_sent __read_mostly = 300 SECS / 1000;
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static unsigned int ip_ct_sctp_timeout_shutdown_recd __read_mostly = 300 SECS / 1000;
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static unsigned int ip_ct_sctp_timeout_shutdown_ack_sent __read_mostly = 3 SECS;
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static const unsigned int * sctp_timeouts[]
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= { NULL, /* SCTP_CONNTRACK_NONE */
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&ip_ct_sctp_timeout_closed, /* SCTP_CONNTRACK_CLOSED */
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&ip_ct_sctp_timeout_cookie_wait, /* SCTP_CONNTRACK_COOKIE_WAIT */
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&ip_ct_sctp_timeout_cookie_echoed, /* SCTP_CONNTRACK_COOKIE_ECHOED */
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&ip_ct_sctp_timeout_established, /* SCTP_CONNTRACK_ESTABLISHED */
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&ip_ct_sctp_timeout_shutdown_sent, /* SCTP_CONNTRACK_SHUTDOWN_SENT */
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&ip_ct_sctp_timeout_shutdown_recd, /* SCTP_CONNTRACK_SHUTDOWN_RECD */
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&ip_ct_sctp_timeout_shutdown_ack_sent /* SCTP_CONNTRACK_SHUTDOWN_ACK_SENT */
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};
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#define sNO SCTP_CONNTRACK_NONE
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#define sCL SCTP_CONNTRACK_CLOSED
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#define sCW SCTP_CONNTRACK_COOKIE_WAIT
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#define sCE SCTP_CONNTRACK_COOKIE_ECHOED
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#define sES SCTP_CONNTRACK_ESTABLISHED
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#define sSS SCTP_CONNTRACK_SHUTDOWN_SENT
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#define sSR SCTP_CONNTRACK_SHUTDOWN_RECD
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#define sSA SCTP_CONNTRACK_SHUTDOWN_ACK_SENT
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#define sIV SCTP_CONNTRACK_MAX
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/*
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These are the descriptions of the states:
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NOTE: These state names are tantalizingly similar to the states of an
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SCTP endpoint. But the interpretation of the states is a little different,
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considering that these are the states of the connection and not of an end
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point. Please note the subtleties. -Kiran
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NONE - Nothing so far.
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COOKIE WAIT - We have seen an INIT chunk in the original direction, or also
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an INIT_ACK chunk in the reply direction.
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COOKIE ECHOED - We have seen a COOKIE_ECHO chunk in the original direction.
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ESTABLISHED - We have seen a COOKIE_ACK in the reply direction.
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SHUTDOWN_SENT - We have seen a SHUTDOWN chunk in the original direction.
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SHUTDOWN_RECD - We have seen a SHUTDOWN chunk in the reply directoin.
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SHUTDOWN_ACK_SENT - We have seen a SHUTDOWN_ACK chunk in the direction opposite
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to that of the SHUTDOWN chunk.
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CLOSED - We have seen a SHUTDOWN_COMPLETE chunk in the direction of
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the SHUTDOWN chunk. Connection is closed.
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*/
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/* TODO
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- I have assumed that the first INIT is in the original direction.
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This messes things when an INIT comes in the reply direction in CLOSED
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state.
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- Check the error type in the reply dir before transitioning from
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cookie echoed to closed.
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- Sec 5.2.4 of RFC 2960
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- Multi Homing support.
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*/
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/* SCTP conntrack state transitions */
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static const enum sctp_conntrack sctp_conntracks[2][9][SCTP_CONNTRACK_MAX] = {
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{
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/* ORIGINAL */
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/* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA */
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/* init */ {sCW, sCW, sCW, sCE, sES, sSS, sSR, sSA},
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/* init_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA},
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/* abort */ {sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
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/* shutdown */ {sCL, sCL, sCW, sCE, sSS, sSS, sSR, sSA},
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/* shutdown_ack */ {sSA, sCL, sCW, sCE, sES, sSA, sSA, sSA},
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/* error */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA},/* Cant have Stale cookie*/
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/* cookie_echo */ {sCL, sCL, sCE, sCE, sES, sSS, sSR, sSA},/* 5.2.4 - Big TODO */
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/* cookie_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA},/* Cant come in orig dir */
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/* shutdown_comp*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sCL}
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},
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{
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/* REPLY */
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/* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA */
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/* init */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA},/* INIT in sCL Big TODO */
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/* init_ack */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA},
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/* abort */ {sIV, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
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/* shutdown */ {sIV, sCL, sCW, sCE, sSR, sSS, sSR, sSA},
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/* shutdown_ack */ {sIV, sCL, sCW, sCE, sES, sSA, sSA, sSA},
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/* error */ {sIV, sCL, sCW, sCL, sES, sSS, sSR, sSA},
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/* cookie_echo */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA},/* Cant come in reply dir */
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/* cookie_ack */ {sIV, sCL, sCW, sES, sES, sSS, sSR, sSA},
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/* shutdown_comp*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sCL}
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}
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};
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static int sctp_pkt_to_tuple(const struct sk_buff *skb,
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unsigned int dataoff,
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struct ip_conntrack_tuple *tuple)
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{
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sctp_sctphdr_t _hdr, *hp;
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DEBUGP(__FUNCTION__);
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DEBUGP("\n");
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/* Actually only need first 8 bytes. */
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hp = skb_header_pointer(skb, dataoff, 8, &_hdr);
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if (hp == NULL)
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return 0;
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tuple->src.u.sctp.port = hp->source;
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tuple->dst.u.sctp.port = hp->dest;
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return 1;
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}
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static int sctp_invert_tuple(struct ip_conntrack_tuple *tuple,
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const struct ip_conntrack_tuple *orig)
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{
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DEBUGP(__FUNCTION__);
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DEBUGP("\n");
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tuple->src.u.sctp.port = orig->dst.u.sctp.port;
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tuple->dst.u.sctp.port = orig->src.u.sctp.port;
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return 1;
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}
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/* Print out the per-protocol part of the tuple. */
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static int sctp_print_tuple(struct seq_file *s,
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const struct ip_conntrack_tuple *tuple)
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{
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DEBUGP(__FUNCTION__);
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DEBUGP("\n");
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return seq_printf(s, "sport=%hu dport=%hu ",
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ntohs(tuple->src.u.sctp.port),
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ntohs(tuple->dst.u.sctp.port));
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}
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/* Print out the private part of the conntrack. */
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static int sctp_print_conntrack(struct seq_file *s,
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const struct ip_conntrack *conntrack)
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{
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enum sctp_conntrack state;
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DEBUGP(__FUNCTION__);
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DEBUGP("\n");
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read_lock_bh(&sctp_lock);
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state = conntrack->proto.sctp.state;
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read_unlock_bh(&sctp_lock);
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return seq_printf(s, "%s ", sctp_conntrack_names[state]);
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}
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#define for_each_sctp_chunk(skb, sch, _sch, offset, count) \
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for (offset = skb->nh.iph->ihl * 4 + sizeof(sctp_sctphdr_t), count = 0; \
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offset < skb->len && \
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(sch = skb_header_pointer(skb, offset, sizeof(_sch), &_sch)); \
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offset += (ntohs(sch->length) + 3) & ~3, count++)
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/* Some validity checks to make sure the chunks are fine */
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static int do_basic_checks(struct ip_conntrack *conntrack,
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const struct sk_buff *skb,
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char *map)
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{
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u_int32_t offset, count;
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sctp_chunkhdr_t _sch, *sch;
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int flag;
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DEBUGP(__FUNCTION__);
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DEBUGP("\n");
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flag = 0;
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for_each_sctp_chunk (skb, sch, _sch, offset, count) {
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DEBUGP("Chunk Num: %d Type: %d\n", count, sch->type);
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if (sch->type == SCTP_CID_INIT
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|| sch->type == SCTP_CID_INIT_ACK
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|| sch->type == SCTP_CID_SHUTDOWN_COMPLETE) {
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flag = 1;
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}
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/*
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* Cookie Ack/Echo chunks not the first OR
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* Init / Init Ack / Shutdown compl chunks not the only chunks
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* OR zero-length.
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*/
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if (((sch->type == SCTP_CID_COOKIE_ACK
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|| sch->type == SCTP_CID_COOKIE_ECHO
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|| flag)
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&& count !=0) || !sch->length) {
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DEBUGP("Basic checks failed\n");
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return 1;
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}
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if (map) {
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set_bit(sch->type, (void *)map);
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}
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}
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DEBUGP("Basic checks passed\n");
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return count == 0;
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}
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static int new_state(enum ip_conntrack_dir dir,
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enum sctp_conntrack cur_state,
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int chunk_type)
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{
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int i;
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DEBUGP(__FUNCTION__);
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DEBUGP("\n");
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DEBUGP("Chunk type: %d\n", chunk_type);
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switch (chunk_type) {
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case SCTP_CID_INIT:
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DEBUGP("SCTP_CID_INIT\n");
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i = 0; break;
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case SCTP_CID_INIT_ACK:
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DEBUGP("SCTP_CID_INIT_ACK\n");
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i = 1; break;
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case SCTP_CID_ABORT:
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DEBUGP("SCTP_CID_ABORT\n");
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i = 2; break;
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case SCTP_CID_SHUTDOWN:
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DEBUGP("SCTP_CID_SHUTDOWN\n");
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i = 3; break;
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case SCTP_CID_SHUTDOWN_ACK:
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DEBUGP("SCTP_CID_SHUTDOWN_ACK\n");
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i = 4; break;
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case SCTP_CID_ERROR:
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DEBUGP("SCTP_CID_ERROR\n");
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i = 5; break;
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case SCTP_CID_COOKIE_ECHO:
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DEBUGP("SCTP_CID_COOKIE_ECHO\n");
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i = 6; break;
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case SCTP_CID_COOKIE_ACK:
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DEBUGP("SCTP_CID_COOKIE_ACK\n");
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i = 7; break;
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case SCTP_CID_SHUTDOWN_COMPLETE:
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DEBUGP("SCTP_CID_SHUTDOWN_COMPLETE\n");
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i = 8; break;
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default:
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/* Other chunks like DATA, SACK, HEARTBEAT and
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its ACK do not cause a change in state */
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DEBUGP("Unknown chunk type, Will stay in %s\n",
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sctp_conntrack_names[cur_state]);
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return cur_state;
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}
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DEBUGP("dir: %d cur_state: %s chunk_type: %d new_state: %s\n",
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dir, sctp_conntrack_names[cur_state], chunk_type,
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sctp_conntrack_names[sctp_conntracks[dir][i][cur_state]]);
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return sctp_conntracks[dir][i][cur_state];
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}
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/* Returns verdict for packet, or -1 for invalid. */
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static int sctp_packet(struct ip_conntrack *conntrack,
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const struct sk_buff *skb,
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enum ip_conntrack_info ctinfo)
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{
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enum sctp_conntrack newconntrack, oldsctpstate;
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struct iphdr *iph = skb->nh.iph;
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sctp_sctphdr_t _sctph, *sh;
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sctp_chunkhdr_t _sch, *sch;
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u_int32_t offset, count;
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char map[256 / sizeof (char)] = {0};
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DEBUGP(__FUNCTION__);
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DEBUGP("\n");
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sh = skb_header_pointer(skb, iph->ihl * 4, sizeof(_sctph), &_sctph);
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if (sh == NULL)
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return -1;
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if (do_basic_checks(conntrack, skb, map) != 0)
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return -1;
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/* Check the verification tag (Sec 8.5) */
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if (!test_bit(SCTP_CID_INIT, (void *)map)
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&& !test_bit(SCTP_CID_SHUTDOWN_COMPLETE, (void *)map)
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&& !test_bit(SCTP_CID_COOKIE_ECHO, (void *)map)
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&& !test_bit(SCTP_CID_ABORT, (void *)map)
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&& !test_bit(SCTP_CID_SHUTDOWN_ACK, (void *)map)
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&& (sh->vtag != conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)])) {
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DEBUGP("Verification tag check failed\n");
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return -1;
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}
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oldsctpstate = newconntrack = SCTP_CONNTRACK_MAX;
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for_each_sctp_chunk (skb, sch, _sch, offset, count) {
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write_lock_bh(&sctp_lock);
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/* Special cases of Verification tag check (Sec 8.5.1) */
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if (sch->type == SCTP_CID_INIT) {
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/* Sec 8.5.1 (A) */
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if (sh->vtag != 0) {
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write_unlock_bh(&sctp_lock);
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return -1;
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}
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} else if (sch->type == SCTP_CID_ABORT) {
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/* Sec 8.5.1 (B) */
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if (!(sh->vtag == conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)])
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&& !(sh->vtag == conntrack->proto.sctp.vtag
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[1 - CTINFO2DIR(ctinfo)])) {
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write_unlock_bh(&sctp_lock);
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return -1;
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}
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} else if (sch->type == SCTP_CID_SHUTDOWN_COMPLETE) {
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/* Sec 8.5.1 (C) */
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if (!(sh->vtag == conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)])
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&& !(sh->vtag == conntrack->proto.sctp.vtag
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[1 - CTINFO2DIR(ctinfo)]
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&& (sch->flags & 1))) {
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write_unlock_bh(&sctp_lock);
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return -1;
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}
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} else if (sch->type == SCTP_CID_COOKIE_ECHO) {
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/* Sec 8.5.1 (D) */
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if (!(sh->vtag == conntrack->proto.sctp.vtag[CTINFO2DIR(ctinfo)])) {
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write_unlock_bh(&sctp_lock);
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return -1;
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}
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}
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oldsctpstate = conntrack->proto.sctp.state;
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newconntrack = new_state(CTINFO2DIR(ctinfo), oldsctpstate, sch->type);
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/* Invalid */
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if (newconntrack == SCTP_CONNTRACK_MAX) {
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DEBUGP("ip_conntrack_sctp: Invalid dir=%i ctype=%u conntrack=%u\n",
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CTINFO2DIR(ctinfo), sch->type, oldsctpstate);
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write_unlock_bh(&sctp_lock);
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return -1;
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}
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/* If it is an INIT or an INIT ACK note down the vtag */
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if (sch->type == SCTP_CID_INIT
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|| sch->type == SCTP_CID_INIT_ACK) {
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sctp_inithdr_t _inithdr, *ih;
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ih = skb_header_pointer(skb, offset + sizeof(sctp_chunkhdr_t),
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sizeof(_inithdr), &_inithdr);
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if (ih == NULL) {
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write_unlock_bh(&sctp_lock);
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return -1;
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}
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DEBUGP("Setting vtag %x for dir %d\n",
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ih->init_tag, !CTINFO2DIR(ctinfo));
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conntrack->proto.sctp.vtag[!CTINFO2DIR(ctinfo)] = ih->init_tag;
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}
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conntrack->proto.sctp.state = newconntrack;
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if (oldsctpstate != newconntrack)
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ip_conntrack_event_cache(IPCT_PROTOINFO, skb);
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write_unlock_bh(&sctp_lock);
|
|
}
|
|
|
|
ip_ct_refresh_acct(conntrack, ctinfo, skb, *sctp_timeouts[newconntrack]);
|
|
|
|
if (oldsctpstate == SCTP_CONNTRACK_COOKIE_ECHOED
|
|
&& CTINFO2DIR(ctinfo) == IP_CT_DIR_REPLY
|
|
&& newconntrack == SCTP_CONNTRACK_ESTABLISHED) {
|
|
DEBUGP("Setting assured bit\n");
|
|
set_bit(IPS_ASSURED_BIT, &conntrack->status);
|
|
ip_conntrack_event_cache(IPCT_STATUS, skb);
|
|
}
|
|
|
|
return NF_ACCEPT;
|
|
}
|
|
|
|
/* Called when a new connection for this protocol found. */
|
|
static int sctp_new(struct ip_conntrack *conntrack,
|
|
const struct sk_buff *skb)
|
|
{
|
|
enum sctp_conntrack newconntrack;
|
|
struct iphdr *iph = skb->nh.iph;
|
|
sctp_sctphdr_t _sctph, *sh;
|
|
sctp_chunkhdr_t _sch, *sch;
|
|
u_int32_t offset, count;
|
|
char map[256 / sizeof (char)] = {0};
|
|
|
|
DEBUGP(__FUNCTION__);
|
|
DEBUGP("\n");
|
|
|
|
sh = skb_header_pointer(skb, iph->ihl * 4, sizeof(_sctph), &_sctph);
|
|
if (sh == NULL)
|
|
return 0;
|
|
|
|
if (do_basic_checks(conntrack, skb, map) != 0)
|
|
return 0;
|
|
|
|
/* If an OOTB packet has any of these chunks discard (Sec 8.4) */
|
|
if ((test_bit (SCTP_CID_ABORT, (void *)map))
|
|
|| (test_bit (SCTP_CID_SHUTDOWN_COMPLETE, (void *)map))
|
|
|| (test_bit (SCTP_CID_COOKIE_ACK, (void *)map))) {
|
|
return 0;
|
|
}
|
|
|
|
newconntrack = SCTP_CONNTRACK_MAX;
|
|
for_each_sctp_chunk (skb, sch, _sch, offset, count) {
|
|
/* Don't need lock here: this conntrack not in circulation yet */
|
|
newconntrack = new_state (IP_CT_DIR_ORIGINAL,
|
|
SCTP_CONNTRACK_NONE, sch->type);
|
|
|
|
/* Invalid: delete conntrack */
|
|
if (newconntrack == SCTP_CONNTRACK_MAX) {
|
|
DEBUGP("ip_conntrack_sctp: invalid new deleting.\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Copy the vtag into the state info */
|
|
if (sch->type == SCTP_CID_INIT) {
|
|
if (sh->vtag == 0) {
|
|
sctp_inithdr_t _inithdr, *ih;
|
|
|
|
ih = skb_header_pointer(skb, offset + sizeof(sctp_chunkhdr_t),
|
|
sizeof(_inithdr), &_inithdr);
|
|
if (ih == NULL)
|
|
return 0;
|
|
|
|
DEBUGP("Setting vtag %x for new conn\n",
|
|
ih->init_tag);
|
|
|
|
conntrack->proto.sctp.vtag[IP_CT_DIR_REPLY] =
|
|
ih->init_tag;
|
|
} else {
|
|
/* Sec 8.5.1 (A) */
|
|
return 0;
|
|
}
|
|
}
|
|
/* If it is a shutdown ack OOTB packet, we expect a return
|
|
shutdown complete, otherwise an ABORT Sec 8.4 (5) and (8) */
|
|
else {
|
|
DEBUGP("Setting vtag %x for new conn OOTB\n",
|
|
sh->vtag);
|
|
conntrack->proto.sctp.vtag[IP_CT_DIR_REPLY] = sh->vtag;
|
|
}
|
|
|
|
conntrack->proto.sctp.state = newconntrack;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static struct ip_conntrack_protocol ip_conntrack_protocol_sctp = {
|
|
.proto = IPPROTO_SCTP,
|
|
.name = "sctp",
|
|
.pkt_to_tuple = sctp_pkt_to_tuple,
|
|
.invert_tuple = sctp_invert_tuple,
|
|
.print_tuple = sctp_print_tuple,
|
|
.print_conntrack = sctp_print_conntrack,
|
|
.packet = sctp_packet,
|
|
.new = sctp_new,
|
|
.destroy = NULL,
|
|
.me = THIS_MODULE,
|
|
#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \
|
|
defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE)
|
|
.tuple_to_nfattr = ip_ct_port_tuple_to_nfattr,
|
|
.nfattr_to_tuple = ip_ct_port_nfattr_to_tuple,
|
|
#endif
|
|
};
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
static ctl_table ip_ct_sysctl_table[] = {
|
|
{
|
|
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED,
|
|
.procname = "ip_conntrack_sctp_timeout_closed",
|
|
.data = &ip_ct_sctp_timeout_closed,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_jiffies,
|
|
},
|
|
{
|
|
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT,
|
|
.procname = "ip_conntrack_sctp_timeout_cookie_wait",
|
|
.data = &ip_ct_sctp_timeout_cookie_wait,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_jiffies,
|
|
},
|
|
{
|
|
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED,
|
|
.procname = "ip_conntrack_sctp_timeout_cookie_echoed",
|
|
.data = &ip_ct_sctp_timeout_cookie_echoed,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_jiffies,
|
|
},
|
|
{
|
|
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED,
|
|
.procname = "ip_conntrack_sctp_timeout_established",
|
|
.data = &ip_ct_sctp_timeout_established,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_jiffies,
|
|
},
|
|
{
|
|
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT,
|
|
.procname = "ip_conntrack_sctp_timeout_shutdown_sent",
|
|
.data = &ip_ct_sctp_timeout_shutdown_sent,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_jiffies,
|
|
},
|
|
{
|
|
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD,
|
|
.procname = "ip_conntrack_sctp_timeout_shutdown_recd",
|
|
.data = &ip_ct_sctp_timeout_shutdown_recd,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_jiffies,
|
|
},
|
|
{
|
|
.ctl_name = NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT,
|
|
.procname = "ip_conntrack_sctp_timeout_shutdown_ack_sent",
|
|
.data = &ip_ct_sctp_timeout_shutdown_ack_sent,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_jiffies,
|
|
},
|
|
{ .ctl_name = 0 }
|
|
};
|
|
|
|
static ctl_table ip_ct_netfilter_table[] = {
|
|
{
|
|
.ctl_name = NET_IPV4_NETFILTER,
|
|
.procname = "netfilter",
|
|
.mode = 0555,
|
|
.child = ip_ct_sysctl_table,
|
|
},
|
|
{ .ctl_name = 0 }
|
|
};
|
|
|
|
static ctl_table ip_ct_ipv4_table[] = {
|
|
{
|
|
.ctl_name = NET_IPV4,
|
|
.procname = "ipv4",
|
|
.mode = 0555,
|
|
.child = ip_ct_netfilter_table,
|
|
},
|
|
{ .ctl_name = 0 }
|
|
};
|
|
|
|
static ctl_table ip_ct_net_table[] = {
|
|
{
|
|
.ctl_name = CTL_NET,
|
|
.procname = "net",
|
|
.mode = 0555,
|
|
.child = ip_ct_ipv4_table,
|
|
},
|
|
{ .ctl_name = 0 }
|
|
};
|
|
|
|
static struct ctl_table_header *ip_ct_sysctl_header;
|
|
#endif
|
|
|
|
static int __init ip_conntrack_proto_sctp_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = ip_conntrack_protocol_register(&ip_conntrack_protocol_sctp);
|
|
if (ret) {
|
|
printk("ip_conntrack_proto_sctp: protocol register failed\n");
|
|
goto out;
|
|
}
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
ip_ct_sysctl_header = register_sysctl_table(ip_ct_net_table, 0);
|
|
if (ip_ct_sysctl_header == NULL) {
|
|
ret = -ENOMEM;
|
|
printk("ip_conntrack_proto_sctp: can't register to sysctl.\n");
|
|
goto cleanup;
|
|
}
|
|
#endif
|
|
|
|
return ret;
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
cleanup:
|
|
ip_conntrack_protocol_unregister(&ip_conntrack_protocol_sctp);
|
|
#endif
|
|
out:
|
|
DEBUGP("SCTP conntrack module loading %s\n",
|
|
ret ? "failed": "succeeded");
|
|
return ret;
|
|
}
|
|
|
|
static void __exit ip_conntrack_proto_sctp_fini(void)
|
|
{
|
|
ip_conntrack_protocol_unregister(&ip_conntrack_protocol_sctp);
|
|
#ifdef CONFIG_SYSCTL
|
|
unregister_sysctl_table(ip_ct_sysctl_header);
|
|
#endif
|
|
DEBUGP("SCTP conntrack module unloaded\n");
|
|
}
|
|
|
|
module_init(ip_conntrack_proto_sctp_init);
|
|
module_exit(ip_conntrack_proto_sctp_fini);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Kiran Kumar Immidi");
|
|
MODULE_DESCRIPTION("Netfilter connection tracking protocol helper for SCTP");
|