Revision e7b526bb852cdd67b24e174da6850222f8da41b1 authored by Chris Wilson on 02 June 2010, 07:30:48 UTC, committed by Linus Torvalds on 06 June 2010, 03:37:37 UTC
Cursors need to be in the GTT domain when being accessed by the GPU. Previously this was a fortuitous byproduct of userspace using pwrite() to upload the image data into the cursor. The redundant clflush was removed in commit 9b8c4a and so the image was no longer being flushed out of the caches into main memory. One could also devise a scenario where the cursor was rendered by the GPU, prior to being attached as the cursor, resulting in similar corruption due to the missing MI_FLUSH. Fixes: Bug 28335 - Cursor corruption caused by commit 9b8c4a0b21 https://bugs.freedesktop.org/show_bug.cgi?id=28335 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reported-and-tested-by: Jeff Chua <jeff.chua.linux@gmail.com> Tested-by: Linus Torvalds <torvalds@linux-foundation.org> Reported-by: Andy Isaacson <adi@hexapodia.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 78b3655
nf_conntrack_proto_sctp.c
/*
* Connection tracking protocol helper module for SCTP.
*
* SCTP is defined in RFC 2960. References to various sections in this code
* are to this RFC.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/types.h>
#include <linux/timer.h>
#include <linux/netfilter.h>
#include <linux/module.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/sctp.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_ecache.h>
/* FIXME: Examine ipfilter's timeouts and conntrack transitions more
closely. They're more complex. --RR
And so for me for SCTP :D -Kiran */
static const char *const sctp_conntrack_names[] = {
"NONE",
"CLOSED",
"COOKIE_WAIT",
"COOKIE_ECHOED",
"ESTABLISHED",
"SHUTDOWN_SENT",
"SHUTDOWN_RECD",
"SHUTDOWN_ACK_SENT",
};
#define SECS * HZ
#define MINS * 60 SECS
#define HOURS * 60 MINS
#define DAYS * 24 HOURS
static unsigned int sctp_timeouts[SCTP_CONNTRACK_MAX] __read_mostly = {
[SCTP_CONNTRACK_CLOSED] = 10 SECS,
[SCTP_CONNTRACK_COOKIE_WAIT] = 3 SECS,
[SCTP_CONNTRACK_COOKIE_ECHOED] = 3 SECS,
[SCTP_CONNTRACK_ESTABLISHED] = 5 DAYS,
[SCTP_CONNTRACK_SHUTDOWN_SENT] = 300 SECS / 1000,
[SCTP_CONNTRACK_SHUTDOWN_RECD] = 300 SECS / 1000,
[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT] = 3 SECS,
};
#define sNO SCTP_CONNTRACK_NONE
#define sCL SCTP_CONNTRACK_CLOSED
#define sCW SCTP_CONNTRACK_COOKIE_WAIT
#define sCE SCTP_CONNTRACK_COOKIE_ECHOED
#define sES SCTP_CONNTRACK_ESTABLISHED
#define sSS SCTP_CONNTRACK_SHUTDOWN_SENT
#define sSR SCTP_CONNTRACK_SHUTDOWN_RECD
#define sSA SCTP_CONNTRACK_SHUTDOWN_ACK_SENT
#define sIV SCTP_CONNTRACK_MAX
/*
These are the descriptions of the states:
NOTE: These state names are tantalizingly similar to the states of an
SCTP endpoint. But the interpretation of the states is a little different,
considering that these are the states of the connection and not of an end
point. Please note the subtleties. -Kiran
NONE - Nothing so far.
COOKIE WAIT - We have seen an INIT chunk in the original direction, or also
an INIT_ACK chunk in the reply direction.
COOKIE ECHOED - We have seen a COOKIE_ECHO chunk in the original direction.
ESTABLISHED - We have seen a COOKIE_ACK in the reply direction.
SHUTDOWN_SENT - We have seen a SHUTDOWN chunk in the original direction.
SHUTDOWN_RECD - We have seen a SHUTDOWN chunk in the reply directoin.
SHUTDOWN_ACK_SENT - We have seen a SHUTDOWN_ACK chunk in the direction opposite
to that of the SHUTDOWN chunk.
CLOSED - We have seen a SHUTDOWN_COMPLETE chunk in the direction of
the SHUTDOWN chunk. Connection is closed.
*/
/* TODO
- I have assumed that the first INIT is in the original direction.
This messes things when an INIT comes in the reply direction in CLOSED
state.
- Check the error type in the reply dir before transitioning from
cookie echoed to closed.
- Sec 5.2.4 of RFC 2960
- Multi Homing support.
*/
/* SCTP conntrack state transitions */
static const u8 sctp_conntracks[2][9][SCTP_CONNTRACK_MAX] = {
{
/* ORIGINAL */
/* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA */
/* init */ {sCW, sCW, sCW, sCE, sES, sSS, sSR, sSA},
/* init_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA},
/* abort */ {sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
/* shutdown */ {sCL, sCL, sCW, sCE, sSS, sSS, sSR, sSA},
/* shutdown_ack */ {sSA, sCL, sCW, sCE, sES, sSA, sSA, sSA},
/* error */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA},/* Cant have Stale cookie*/
/* cookie_echo */ {sCL, sCL, sCE, sCE, sES, sSS, sSR, sSA},/* 5.2.4 - Big TODO */
/* cookie_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA},/* Cant come in orig dir */
/* shutdown_comp*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sCL}
},
{
/* REPLY */
/* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA */
/* init */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA},/* INIT in sCL Big TODO */
/* init_ack */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA},
/* abort */ {sIV, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
/* shutdown */ {sIV, sCL, sCW, sCE, sSR, sSS, sSR, sSA},
/* shutdown_ack */ {sIV, sCL, sCW, sCE, sES, sSA, sSA, sSA},
/* error */ {sIV, sCL, sCW, sCL, sES, sSS, sSR, sSA},
/* cookie_echo */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA},/* Cant come in reply dir */
/* cookie_ack */ {sIV, sCL, sCW, sES, sES, sSS, sSR, sSA},
/* shutdown_comp*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sCL}
}
};
static bool sctp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
struct nf_conntrack_tuple *tuple)
{
const struct sctphdr *hp;
struct sctphdr _hdr;
/* Actually only need first 8 bytes. */
hp = skb_header_pointer(skb, dataoff, 8, &_hdr);
if (hp == NULL)
return false;
tuple->src.u.sctp.port = hp->source;
tuple->dst.u.sctp.port = hp->dest;
return true;
}
static bool sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_tuple *orig)
{
tuple->src.u.sctp.port = orig->dst.u.sctp.port;
tuple->dst.u.sctp.port = orig->src.u.sctp.port;
return true;
}
/* Print out the per-protocol part of the tuple. */
static int sctp_print_tuple(struct seq_file *s,
const struct nf_conntrack_tuple *tuple)
{
return seq_printf(s, "sport=%hu dport=%hu ",
ntohs(tuple->src.u.sctp.port),
ntohs(tuple->dst.u.sctp.port));
}
/* Print out the private part of the conntrack. */
static int sctp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
enum sctp_conntrack state;
spin_lock_bh(&ct->lock);
state = ct->proto.sctp.state;
spin_unlock_bh(&ct->lock);
return seq_printf(s, "%s ", sctp_conntrack_names[state]);
}
#define for_each_sctp_chunk(skb, sch, _sch, offset, dataoff, count) \
for ((offset) = (dataoff) + sizeof(sctp_sctphdr_t), (count) = 0; \
(offset) < (skb)->len && \
((sch) = skb_header_pointer((skb), (offset), sizeof(_sch), &(_sch))); \
(offset) += (ntohs((sch)->length) + 3) & ~3, (count)++)
/* Some validity checks to make sure the chunks are fine */
static int do_basic_checks(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
unsigned long *map)
{
u_int32_t offset, count;
sctp_chunkhdr_t _sch, *sch;
int flag;
flag = 0;
for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
pr_debug("Chunk Num: %d Type: %d\n", count, sch->type);
if (sch->type == SCTP_CID_INIT ||
sch->type == SCTP_CID_INIT_ACK ||
sch->type == SCTP_CID_SHUTDOWN_COMPLETE)
flag = 1;
/*
* Cookie Ack/Echo chunks not the first OR
* Init / Init Ack / Shutdown compl chunks not the only chunks
* OR zero-length.
*/
if (((sch->type == SCTP_CID_COOKIE_ACK ||
sch->type == SCTP_CID_COOKIE_ECHO ||
flag) &&
count != 0) || !sch->length) {
pr_debug("Basic checks failed\n");
return 1;
}
if (map)
set_bit(sch->type, map);
}
pr_debug("Basic checks passed\n");
return count == 0;
}
static int sctp_new_state(enum ip_conntrack_dir dir,
enum sctp_conntrack cur_state,
int chunk_type)
{
int i;
pr_debug("Chunk type: %d\n", chunk_type);
switch (chunk_type) {
case SCTP_CID_INIT:
pr_debug("SCTP_CID_INIT\n");
i = 0;
break;
case SCTP_CID_INIT_ACK:
pr_debug("SCTP_CID_INIT_ACK\n");
i = 1;
break;
case SCTP_CID_ABORT:
pr_debug("SCTP_CID_ABORT\n");
i = 2;
break;
case SCTP_CID_SHUTDOWN:
pr_debug("SCTP_CID_SHUTDOWN\n");
i = 3;
break;
case SCTP_CID_SHUTDOWN_ACK:
pr_debug("SCTP_CID_SHUTDOWN_ACK\n");
i = 4;
break;
case SCTP_CID_ERROR:
pr_debug("SCTP_CID_ERROR\n");
i = 5;
break;
case SCTP_CID_COOKIE_ECHO:
pr_debug("SCTP_CID_COOKIE_ECHO\n");
i = 6;
break;
case SCTP_CID_COOKIE_ACK:
pr_debug("SCTP_CID_COOKIE_ACK\n");
i = 7;
break;
case SCTP_CID_SHUTDOWN_COMPLETE:
pr_debug("SCTP_CID_SHUTDOWN_COMPLETE\n");
i = 8;
break;
default:
/* Other chunks like DATA, SACK, HEARTBEAT and
its ACK do not cause a change in state */
pr_debug("Unknown chunk type, Will stay in %s\n",
sctp_conntrack_names[cur_state]);
return cur_state;
}
pr_debug("dir: %d cur_state: %s chunk_type: %d new_state: %s\n",
dir, sctp_conntrack_names[cur_state], chunk_type,
sctp_conntrack_names[sctp_conntracks[dir][i][cur_state]]);
return sctp_conntracks[dir][i][cur_state];
}
/* Returns verdict for packet, or -NF_ACCEPT for invalid. */
static int sctp_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
u_int8_t pf,
unsigned int hooknum)
{
enum sctp_conntrack new_state, old_state;
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
const struct sctphdr *sh;
struct sctphdr _sctph;
const struct sctp_chunkhdr *sch;
struct sctp_chunkhdr _sch;
u_int32_t offset, count;
unsigned long map[256 / sizeof(unsigned long)] = { 0 };
sh = skb_header_pointer(skb, dataoff, sizeof(_sctph), &_sctph);
if (sh == NULL)
goto out;
if (do_basic_checks(ct, skb, dataoff, map) != 0)
goto out;
/* Check the verification tag (Sec 8.5) */
if (!test_bit(SCTP_CID_INIT, map) &&
!test_bit(SCTP_CID_SHUTDOWN_COMPLETE, map) &&
!test_bit(SCTP_CID_COOKIE_ECHO, map) &&
!test_bit(SCTP_CID_ABORT, map) &&
!test_bit(SCTP_CID_SHUTDOWN_ACK, map) &&
sh->vtag != ct->proto.sctp.vtag[dir]) {
pr_debug("Verification tag check failed\n");
goto out;
}
old_state = new_state = SCTP_CONNTRACK_NONE;
spin_lock_bh(&ct->lock);
for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
/* Special cases of Verification tag check (Sec 8.5.1) */
if (sch->type == SCTP_CID_INIT) {
/* Sec 8.5.1 (A) */
if (sh->vtag != 0)
goto out_unlock;
} else if (sch->type == SCTP_CID_ABORT) {
/* Sec 8.5.1 (B) */
if (sh->vtag != ct->proto.sctp.vtag[dir] &&
sh->vtag != ct->proto.sctp.vtag[!dir])
goto out_unlock;
} else if (sch->type == SCTP_CID_SHUTDOWN_COMPLETE) {
/* Sec 8.5.1 (C) */
if (sh->vtag != ct->proto.sctp.vtag[dir] &&
sh->vtag != ct->proto.sctp.vtag[!dir] &&
sch->flags & SCTP_CHUNK_FLAG_T)
goto out_unlock;
} else if (sch->type == SCTP_CID_COOKIE_ECHO) {
/* Sec 8.5.1 (D) */
if (sh->vtag != ct->proto.sctp.vtag[dir])
goto out_unlock;
}
old_state = ct->proto.sctp.state;
new_state = sctp_new_state(dir, old_state, sch->type);
/* Invalid */
if (new_state == SCTP_CONNTRACK_MAX) {
pr_debug("nf_conntrack_sctp: Invalid dir=%i ctype=%u "
"conntrack=%u\n",
dir, sch->type, old_state);
goto out_unlock;
}
/* If it is an INIT or an INIT ACK note down the vtag */
if (sch->type == SCTP_CID_INIT ||
sch->type == SCTP_CID_INIT_ACK) {
sctp_inithdr_t _inithdr, *ih;
ih = skb_header_pointer(skb, offset + sizeof(sctp_chunkhdr_t),
sizeof(_inithdr), &_inithdr);
if (ih == NULL)
goto out_unlock;
pr_debug("Setting vtag %x for dir %d\n",
ih->init_tag, !dir);
ct->proto.sctp.vtag[!dir] = ih->init_tag;
}
ct->proto.sctp.state = new_state;
if (old_state != new_state)
nf_conntrack_event_cache(IPCT_PROTOINFO, ct);
}
spin_unlock_bh(&ct->lock);
nf_ct_refresh_acct(ct, ctinfo, skb, sctp_timeouts[new_state]);
if (old_state == SCTP_CONNTRACK_COOKIE_ECHOED &&
dir == IP_CT_DIR_REPLY &&
new_state == SCTP_CONNTRACK_ESTABLISHED) {
pr_debug("Setting assured bit\n");
set_bit(IPS_ASSURED_BIT, &ct->status);
nf_conntrack_event_cache(IPCT_ASSURED, ct);
}
return NF_ACCEPT;
out_unlock:
spin_unlock_bh(&ct->lock);
out:
return -NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static bool sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff)
{
enum sctp_conntrack new_state;
const struct sctphdr *sh;
struct sctphdr _sctph;
const struct sctp_chunkhdr *sch;
struct sctp_chunkhdr _sch;
u_int32_t offset, count;
unsigned long map[256 / sizeof(unsigned long)] = { 0 };
sh = skb_header_pointer(skb, dataoff, sizeof(_sctph), &_sctph);
if (sh == NULL)
return false;
if (do_basic_checks(ct, skb, dataoff, map) != 0)
return false;
/* If an OOTB packet has any of these chunks discard (Sec 8.4) */
if (test_bit(SCTP_CID_ABORT, map) ||
test_bit(SCTP_CID_SHUTDOWN_COMPLETE, map) ||
test_bit(SCTP_CID_COOKIE_ACK, map))
return false;
new_state = SCTP_CONNTRACK_MAX;
for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
/* Don't need lock here: this conntrack not in circulation yet */
new_state = sctp_new_state(IP_CT_DIR_ORIGINAL,
SCTP_CONNTRACK_NONE, sch->type);
/* Invalid: delete conntrack */
if (new_state == SCTP_CONNTRACK_NONE ||
new_state == SCTP_CONNTRACK_MAX) {
pr_debug("nf_conntrack_sctp: invalid new deleting.\n");
return false;
}
/* 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 false;
pr_debug("Setting vtag %x for new conn\n",
ih->init_tag);
ct->proto.sctp.vtag[IP_CT_DIR_REPLY] =
ih->init_tag;
} else {
/* Sec 8.5.1 (A) */
return false;
}
}
/* If it is a shutdown ack OOTB packet, we expect a return
shutdown complete, otherwise an ABORT Sec 8.4 (5) and (8) */
else {
pr_debug("Setting vtag %x for new conn OOTB\n",
sh->vtag);
ct->proto.sctp.vtag[IP_CT_DIR_REPLY] = sh->vtag;
}
ct->proto.sctp.state = new_state;
}
return true;
}
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nfnetlink_conntrack.h>
static int sctp_to_nlattr(struct sk_buff *skb, struct nlattr *nla,
struct nf_conn *ct)
{
struct nlattr *nest_parms;
spin_lock_bh(&ct->lock);
nest_parms = nla_nest_start(skb, CTA_PROTOINFO_SCTP | NLA_F_NESTED);
if (!nest_parms)
goto nla_put_failure;
NLA_PUT_U8(skb, CTA_PROTOINFO_SCTP_STATE, ct->proto.sctp.state);
NLA_PUT_BE32(skb,
CTA_PROTOINFO_SCTP_VTAG_ORIGINAL,
ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL]);
NLA_PUT_BE32(skb,
CTA_PROTOINFO_SCTP_VTAG_REPLY,
ct->proto.sctp.vtag[IP_CT_DIR_REPLY]);
spin_unlock_bh(&ct->lock);
nla_nest_end(skb, nest_parms);
return 0;
nla_put_failure:
spin_unlock_bh(&ct->lock);
return -1;
}
static const struct nla_policy sctp_nla_policy[CTA_PROTOINFO_SCTP_MAX+1] = {
[CTA_PROTOINFO_SCTP_STATE] = { .type = NLA_U8 },
[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] = { .type = NLA_U32 },
[CTA_PROTOINFO_SCTP_VTAG_REPLY] = { .type = NLA_U32 },
};
static int nlattr_to_sctp(struct nlattr *cda[], struct nf_conn *ct)
{
struct nlattr *attr = cda[CTA_PROTOINFO_SCTP];
struct nlattr *tb[CTA_PROTOINFO_SCTP_MAX+1];
int err;
/* updates may not contain the internal protocol info, skip parsing */
if (!attr)
return 0;
err = nla_parse_nested(tb,
CTA_PROTOINFO_SCTP_MAX,
attr,
sctp_nla_policy);
if (err < 0)
return err;
if (!tb[CTA_PROTOINFO_SCTP_STATE] ||
!tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] ||
!tb[CTA_PROTOINFO_SCTP_VTAG_REPLY])
return -EINVAL;
spin_lock_bh(&ct->lock);
ct->proto.sctp.state = nla_get_u8(tb[CTA_PROTOINFO_SCTP_STATE]);
ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL] =
nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL]);
ct->proto.sctp.vtag[IP_CT_DIR_REPLY] =
nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_REPLY]);
spin_unlock_bh(&ct->lock);
return 0;
}
static int sctp_nlattr_size(void)
{
return nla_total_size(0) /* CTA_PROTOINFO_SCTP */
+ nla_policy_len(sctp_nla_policy, CTA_PROTOINFO_SCTP_MAX + 1);
}
#endif
#ifdef CONFIG_SYSCTL
static unsigned int sctp_sysctl_table_users;
static struct ctl_table_header *sctp_sysctl_header;
static struct ctl_table sctp_sysctl_table[] = {
{
.procname = "nf_conntrack_sctp_timeout_closed",
.data = &sctp_timeouts[SCTP_CONNTRACK_CLOSED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_cookie_wait",
.data = &sctp_timeouts[SCTP_CONNTRACK_COOKIE_WAIT],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_cookie_echoed",
.data = &sctp_timeouts[SCTP_CONNTRACK_COOKIE_ECHOED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_established",
.data = &sctp_timeouts[SCTP_CONNTRACK_ESTABLISHED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_shutdown_sent",
.data = &sctp_timeouts[SCTP_CONNTRACK_SHUTDOWN_SENT],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_shutdown_recd",
.data = &sctp_timeouts[SCTP_CONNTRACK_SHUTDOWN_RECD],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "nf_conntrack_sctp_timeout_shutdown_ack_sent",
.data = &sctp_timeouts[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
static struct ctl_table sctp_compat_sysctl_table[] = {
{
.procname = "ip_conntrack_sctp_timeout_closed",
.data = &sctp_timeouts[SCTP_CONNTRACK_CLOSED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "ip_conntrack_sctp_timeout_cookie_wait",
.data = &sctp_timeouts[SCTP_CONNTRACK_COOKIE_WAIT],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "ip_conntrack_sctp_timeout_cookie_echoed",
.data = &sctp_timeouts[SCTP_CONNTRACK_COOKIE_ECHOED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "ip_conntrack_sctp_timeout_established",
.data = &sctp_timeouts[SCTP_CONNTRACK_ESTABLISHED],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "ip_conntrack_sctp_timeout_shutdown_sent",
.data = &sctp_timeouts[SCTP_CONNTRACK_SHUTDOWN_SENT],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "ip_conntrack_sctp_timeout_shutdown_recd",
.data = &sctp_timeouts[SCTP_CONNTRACK_SHUTDOWN_RECD],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "ip_conntrack_sctp_timeout_shutdown_ack_sent",
.data = &sctp_timeouts[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT],
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
#endif
static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = {
.l3proto = PF_INET,
.l4proto = 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,
.me = THIS_MODULE,
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
.to_nlattr = sctp_to_nlattr,
.nlattr_size = sctp_nlattr_size,
.from_nlattr = nlattr_to_sctp,
.tuple_to_nlattr = nf_ct_port_tuple_to_nlattr,
.nlattr_tuple_size = nf_ct_port_nlattr_tuple_size,
.nlattr_to_tuple = nf_ct_port_nlattr_to_tuple,
.nla_policy = nf_ct_port_nla_policy,
#endif
#ifdef CONFIG_SYSCTL
.ctl_table_users = &sctp_sysctl_table_users,
.ctl_table_header = &sctp_sysctl_header,
.ctl_table = sctp_sysctl_table,
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
.ctl_compat_table = sctp_compat_sysctl_table,
#endif
#endif
};
static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = {
.l3proto = PF_INET6,
.l4proto = 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,
.me = THIS_MODULE,
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
.to_nlattr = sctp_to_nlattr,
.nlattr_size = sctp_nlattr_size,
.from_nlattr = nlattr_to_sctp,
.tuple_to_nlattr = nf_ct_port_tuple_to_nlattr,
.nlattr_tuple_size = nf_ct_port_nlattr_tuple_size,
.nlattr_to_tuple = nf_ct_port_nlattr_to_tuple,
.nla_policy = nf_ct_port_nla_policy,
#endif
#ifdef CONFIG_SYSCTL
.ctl_table_users = &sctp_sysctl_table_users,
.ctl_table_header = &sctp_sysctl_header,
.ctl_table = sctp_sysctl_table,
#endif
};
static int __init nf_conntrack_proto_sctp_init(void)
{
int ret;
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_sctp4);
if (ret) {
pr_err("nf_conntrack_l4proto_sctp4: protocol register failed\n");
goto out;
}
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_sctp6);
if (ret) {
pr_err("nf_conntrack_l4proto_sctp6: protocol register failed\n");
goto cleanup_sctp4;
}
return ret;
cleanup_sctp4:
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_sctp4);
out:
return ret;
}
static void __exit nf_conntrack_proto_sctp_fini(void)
{
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_sctp6);
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_sctp4);
}
module_init(nf_conntrack_proto_sctp_init);
module_exit(nf_conntrack_proto_sctp_fini);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Kiran Kumar Immidi");
MODULE_DESCRIPTION("Netfilter connection tracking protocol helper for SCTP");
MODULE_ALIAS("ip_conntrack_proto_sctp");
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