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Commit 2a48216c authored by Jakub Kicinski's avatar Jakub Kicinski
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf 

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

1) Perform SCTP vtag verification for ABORT/SHUTDOWN_COMPLETE according
   to RFC 9260, Sect 8.5.1.

2) Fix infinite loop if SCTP chunk size is zero in for_each_sctp_chunk().
   And remove useless check in this macro too.

3) Revert DATA_SENT state in the SCTP tracker, this was applied in the
   previous merge window. Next patch in this series provides a more
   simple approach to multihoming support.

4) Unify HEARTBEAT_ACKED and ESTABLISHED states for SCTP multihoming
   support, use default ESTABLISHED of 210 seconds based on
   heartbeat timeout * maximum number of retransmission + round-trip timeout.
   Otherwise, SCTP conntrack entry that represents secondary paths
   remain stale in the table for up to 5 days.

This is a slightly large batch with fixes for the SCTP connection
tracking helper, all patches from Sriram Yagnaraman.

* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: conntrack: unify established states for SCTP paths
  Revert "netfilter: conntrack: add sctp DATA_SENT state"
  netfilter: conntrack: fix bug in for_each_sctp_chunk
  netfilter: conntrack: fix vtag checks for ABORT/SHUTDOWN_COMPLETE
====================

Link: https://lore.kernel.org/r/20230124183933.4752-1-pablo@netfilter.orgSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parents 418e5340 a44b7651
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Showing with 77 additions and 125 deletions
Documentation/networking/nf_conntrack-sysctl.rst
View file @ 2a48216c
......@@ -173,7 +173,9 @@ nf_conntrack_sctp_timeout_cookie_echoed - INTEGER (seconds)
default 3
nf_conntrack_sctp_timeout_established - INTEGER (seconds)
default 432000 (5 days)
default 210
Default is set to (hb_interval * path_max_retrans + rto_max)
nf_conntrack_sctp_timeout_shutdown_sent - INTEGER (seconds)
default 0.3
......@@ -190,12 +192,6 @@ nf_conntrack_sctp_timeout_heartbeat_sent - INTEGER (seconds)
This timeout is used to setup conntrack entry on secondary paths.
Default is set to hb_interval.
nf_conntrack_sctp_timeout_heartbeat_acked - INTEGER (seconds)
default 210
This timeout is used to setup conntrack entry on secondary paths.
Default is set to (hb_interval * path_max_retrans + rto_max)
nf_conntrack_udp_timeout - INTEGER (seconds)
default 30
......
include/uapi/linux/netfilter/nf_conntrack_sctp.h
View file @ 2a48216c
......@@ -15,8 +15,7 @@ enum sctp_conntrack {
SCTP_CONNTRACK_SHUTDOWN_RECD,
SCTP_CONNTRACK_SHUTDOWN_ACK_SENT,
SCTP_CONNTRACK_HEARTBEAT_SENT,
SCTP_CONNTRACK_HEARTBEAT_ACKED,
SCTP_CONNTRACK_DATA_SENT,
SCTP_CONNTRACK_HEARTBEAT_ACKED, /* no longer used */
SCTP_CONNTRACK_MAX
};
......
include/uapi/linux/netfilter/nfnetlink_cttimeout.h
View file @ 2a48216c
......@@ -94,8 +94,7 @@ enum ctattr_timeout_sctp {
CTA_TIMEOUT_SCTP_SHUTDOWN_RECD,
CTA_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT,
CTA_TIMEOUT_SCTP_HEARTBEAT_SENT,
CTA_TIMEOUT_SCTP_HEARTBEAT_ACKED,
CTA_TIMEOUT_SCTP_DATA_SENT,
CTA_TIMEOUT_SCTP_HEARTBEAT_ACKED, /* no longer used */
__CTA_TIMEOUT_SCTP_MAX
};
#define CTA_TIMEOUT_SCTP_MAX (__CTA_TIMEOUT_SCTP_MAX - 1)
......
net/netfilter/nf_conntrack_proto_sctp.c
View file @ 2a48216c
......@@ -27,22 +27,16 @@
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_timeout.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",
"HEARTBEAT_SENT",
"HEARTBEAT_ACKED",
[SCTP_CONNTRACK_NONE] = "NONE",
[SCTP_CONNTRACK_CLOSED] = "CLOSED",
[SCTP_CONNTRACK_COOKIE_WAIT] = "COOKIE_WAIT",
[SCTP_CONNTRACK_COOKIE_ECHOED] = "COOKIE_ECHOED",
[SCTP_CONNTRACK_ESTABLISHED] = "ESTABLISHED",
[SCTP_CONNTRACK_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
[SCTP_CONNTRACK_SHUTDOWN_RECD] = "SHUTDOWN_RECD",
[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT] = "SHUTDOWN_ACK_SENT",
[SCTP_CONNTRACK_HEARTBEAT_SENT] = "HEARTBEAT_SENT",
};
#define SECS * HZ
......@@ -54,13 +48,11 @@ static const unsigned int sctp_timeouts[SCTP_CONNTRACK_MAX] = {
[SCTP_CONNTRACK_CLOSED] = 10 SECS,
[SCTP_CONNTRACK_COOKIE_WAIT] = 3 SECS,
[SCTP_CONNTRACK_COOKIE_ECHOED] = 3 SECS,
[SCTP_CONNTRACK_ESTABLISHED] = 5 DAYS,
[SCTP_CONNTRACK_ESTABLISHED] = 210 SECS,
[SCTP_CONNTRACK_SHUTDOWN_SENT] = 300 SECS / 1000,
[SCTP_CONNTRACK_SHUTDOWN_RECD] = 300 SECS / 1000,
[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT] = 3 SECS,
[SCTP_CONNTRACK_HEARTBEAT_SENT] = 30 SECS,
[SCTP_CONNTRACK_HEARTBEAT_ACKED] = 210 SECS,
[SCTP_CONNTRACK_DATA_SENT] = 30 SECS,
};
#define SCTP_FLAG_HEARTBEAT_VTAG_FAILED 1
......@@ -74,8 +66,6 @@ static const unsigned int sctp_timeouts[SCTP_CONNTRACK_MAX] = {
#define sSR SCTP_CONNTRACK_SHUTDOWN_RECD
#define sSA SCTP_CONNTRACK_SHUTDOWN_ACK_SENT
#define sHS SCTP_CONNTRACK_HEARTBEAT_SENT
#define sHA SCTP_CONNTRACK_HEARTBEAT_ACKED
#define sDS SCTP_CONNTRACK_DATA_SENT
#define sIV SCTP_CONNTRACK_MAX
/*
......@@ -98,10 +88,6 @@ SHUTDOWN_ACK_SENT - We have seen a SHUTDOWN_ACK chunk in the direction opposite
CLOSED - We have seen a SHUTDOWN_COMPLETE chunk in the direction of
the SHUTDOWN chunk. Connection is closed.
HEARTBEAT_SENT - We have seen a HEARTBEAT in a new flow.
HEARTBEAT_ACKED - We have seen a HEARTBEAT-ACK/DATA/SACK in the direction
opposite to that of the HEARTBEAT/DATA chunk. Secondary connection
is established.
DATA_SENT - We have seen a DATA/SACK in a new flow.
*/
/* TODO
......@@ -115,38 +101,36 @@ cookie echoed to closed.
*/
/* SCTP conntrack state transitions */
static const u8 sctp_conntracks[2][12][SCTP_CONNTRACK_MAX] = {
static const u8 sctp_conntracks[2][11][SCTP_CONNTRACK_MAX] = {
{
/* ORIGINAL */
/* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS */
/* init */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCW, sHA, sCW},
/* init_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA, sCL},
/* abort */ {sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
/* shutdown */ {sCL, sCL, sCW, sCE, sSS, sSS, sSR, sSA, sCL, sSS, sCL},
/* shutdown_ack */ {sSA, sCL, sCW, sCE, sES, sSA, sSA, sSA, sSA, sHA, sSA},
/* error */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA, sCL},/* Can't have Stale cookie*/
/* cookie_echo */ {sCL, sCL, sCE, sCE, sES, sSS, sSR, sSA, sCL, sHA, sCL},/* 5.2.4 - Big TODO */
/* cookie_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA, sCL},/* Can't come in orig dir */
/* shutdown_comp*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sCL, sCL, sHA, sCL},
/* heartbeat */ {sHS, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS},
/* heartbeat_ack*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS},
/* data/sack */ {sDS, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS}
/* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS */
/* init */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCW},
/* init_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL},
/* abort */ {sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
/* shutdown */ {sCL, sCL, sCW, sCE, sSS, sSS, sSR, sSA, sCL},
/* shutdown_ack */ {sSA, sCL, sCW, sCE, sES, sSA, sSA, sSA, sSA},
/* error */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL},/* Can't have Stale cookie*/
/* cookie_echo */ {sCL, sCL, sCE, sCE, sES, sSS, sSR, sSA, sCL},/* 5.2.4 - Big TODO */
/* cookie_ack */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL},/* Can't come in orig dir */
/* shutdown_comp*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sCL, sCL},
/* heartbeat */ {sHS, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS},
/* heartbeat_ack*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS},
},
{
/* REPLY */
/* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS */
/* init */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA, sIV},/* INIT in sCL Big TODO */
/* init_ack */ {sIV, sCW, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA, sIV},
/* abort */ {sIV, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sIV, sCL, sIV},
/* shutdown */ {sIV, sCL, sCW, sCE, sSR, sSS, sSR, sSA, sIV, sSR, sIV},
/* shutdown_ack */ {sIV, sCL, sCW, sCE, sES, sSA, sSA, sSA, sIV, sHA, sIV},
/* error */ {sIV, sCL, sCW, sCL, sES, sSS, sSR, sSA, sIV, sHA, sIV},
/* cookie_echo */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA, sIV},/* Can't come in reply dir */
/* cookie_ack */ {sIV, sCL, sCW, sES, sES, sSS, sSR, sSA, sIV, sHA, sIV},
/* shutdown_comp*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sCL, sIV, sHA, sIV},
/* heartbeat */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sHA},
/* heartbeat_ack*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHA, sHA, sHA},
/* data/sack */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHA, sHA, sHA},
/* sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS */
/* init */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV},/* INIT in sCL Big TODO */
/* init_ack */ {sIV, sCW, sCW, sCE, sES, sSS, sSR, sSA, sIV},
/* abort */ {sIV, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sIV},
/* shutdown */ {sIV, sCL, sCW, sCE, sSR, sSS, sSR, sSA, sIV},
/* shutdown_ack */ {sIV, sCL, sCW, sCE, sES, sSA, sSA, sSA, sIV},
/* error */ {sIV, sCL, sCW, sCL, sES, sSS, sSR, sSA, sIV},
/* cookie_echo */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV},/* Can't come in reply dir */
/* cookie_ack */ {sIV, sCL, sCW, sES, sES, sSS, sSR, sSA, sIV},
/* shutdown_comp*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sCL, sIV},
/* heartbeat */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS},
/* heartbeat_ack*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sES},
}
};
......@@ -160,8 +144,8 @@ static void sctp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
#define for_each_sctp_chunk(skb, sch, _sch, offset, dataoff, count) \
for ((offset) = (dataoff) + sizeof(struct sctphdr), (count) = 0; \
(offset) < (skb)->len && \
((sch) = skb_header_pointer((skb), (offset), sizeof(_sch), &(_sch))); \
((sch) = skb_header_pointer((skb), (offset), sizeof(_sch), &(_sch))) && \
(sch)->length; \
(offset) += (ntohs((sch)->length) + 3) & ~3, (count)++)
/* Some validity checks to make sure the chunks are fine */
......@@ -258,11 +242,6 @@ static int sctp_new_state(enum ip_conntrack_dir dir,
pr_debug("SCTP_CID_HEARTBEAT_ACK");
i = 10;
break;
case SCTP_CID_DATA:
case SCTP_CID_SACK:
pr_debug("SCTP_CID_DATA/SACK");
i = 11;
break;
default:
/* Other chunks like DATA or SACK do not change the state */
pr_debug("Unknown chunk type, Will stay in %s\n",
......@@ -316,9 +295,7 @@ sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
ih->init_tag);
ct->proto.sctp.vtag[IP_CT_DIR_REPLY] = ih->init_tag;
} else if (sch->type == SCTP_CID_HEARTBEAT ||
sch->type == SCTP_CID_DATA ||
sch->type == SCTP_CID_SACK) {
} else if (sch->type == SCTP_CID_HEARTBEAT) {
pr_debug("Setting vtag %x for secondary conntrack\n",
sh->vtag);
ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL] = sh->vtag;
......@@ -404,19 +381,19 @@ int nf_conntrack_sctp_packet(struct nf_conn *ct,
if (!sctp_new(ct, skb, sh, dataoff))
return -NF_ACCEPT;
} else {
/* 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) &&
!test_bit(SCTP_CID_HEARTBEAT, map) &&
!test_bit(SCTP_CID_HEARTBEAT_ACK, map) &&
sh->vtag != ct->proto.sctp.vtag[dir]) {
pr_debug("Verification tag check failed\n");
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) &&
!test_bit(SCTP_CID_HEARTBEAT, map) &&
!test_bit(SCTP_CID_HEARTBEAT_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;
......@@ -424,22 +401,29 @@ int nf_conntrack_sctp_packet(struct nf_conn *ct,
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) */
/* (A) vtag MUST be zero */
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])
/* (B) vtag MUST match own vtag if T flag is unset OR
* MUST match peer's vtag if T flag is set
*/
if ((!(sch->flags & SCTP_CHUNK_FLAG_T) &&
sh->vtag != ct->proto.sctp.vtag[dir]) ||
((sch->flags & SCTP_CHUNK_FLAG_T) &&
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)
/* (C) vtag MUST match own vtag if T flag is unset OR
* MUST match peer's vtag if T flag is set
*/
if ((!(sch->flags & SCTP_CHUNK_FLAG_T) &&
sh->vtag != ct->proto.sctp.vtag[dir]) ||
((sch->flags & SCTP_CHUNK_FLAG_T) &&
sh->vtag != ct->proto.sctp.vtag[!dir]))
goto out_unlock;
} else if (sch->type == SCTP_CID_COOKIE_ECHO) {
/* Sec 8.5.1 (D) */
/* (D) vtag must be same as init_vtag as found in INIT_ACK */
if (sh->vtag != ct->proto.sctp.vtag[dir])
goto out_unlock;
} else if (sch->type == SCTP_CID_HEARTBEAT) {
......@@ -476,11 +460,6 @@ int nf_conntrack_sctp_packet(struct nf_conn *ct,
} else if (ct->proto.sctp.flags & SCTP_FLAG_HEARTBEAT_VTAG_FAILED) {
ct->proto.sctp.flags &= ~SCTP_FLAG_HEARTBEAT_VTAG_FAILED;
}
} else if (sch->type == SCTP_CID_DATA || sch->type == SCTP_CID_SACK) {
if (ct->proto.sctp.vtag[dir] == 0) {
pr_debug("Setting vtag %x for dir %d\n", sh->vtag, dir);
ct->proto.sctp.vtag[dir] = sh->vtag;
}
}
old_state = ct->proto.sctp.state;
......@@ -518,8 +497,12 @@ int nf_conntrack_sctp_packet(struct nf_conn *ct,
}
ct->proto.sctp.state = new_state;
if (old_state != new_state)
if (old_state != new_state) {
nf_conntrack_event_cache(IPCT_PROTOINFO, ct);
if (new_state == SCTP_CONNTRACK_ESTABLISHED &&
!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
nf_conntrack_event_cache(IPCT_ASSURED, ct);
}
}
spin_unlock_bh(&ct->lock);
......@@ -533,14 +516,6 @@ int nf_conntrack_sctp_packet(struct nf_conn *ct,
nf_ct_refresh_acct(ct, ctinfo, skb, 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:
......@@ -701,7 +676,6 @@ sctp_timeout_nla_policy[CTA_TIMEOUT_SCTP_MAX+1] = {
[CTA_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT] = { .type = NLA_U32 },
[CTA_TIMEOUT_SCTP_HEARTBEAT_SENT] = { .type = NLA_U32 },
[CTA_TIMEOUT_SCTP_HEARTBEAT_ACKED] = { .type = NLA_U32 },
[CTA_TIMEOUT_SCTP_DATA_SENT] = { .type = NLA_U32 },
};
#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
......
net/netfilter/nf_conntrack_standalone.c
View file @ 2a48216c
......@@ -601,8 +601,6 @@ enum nf_ct_sysctl_index {
NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD,
NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT,
NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT,
NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED,
NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_DATA_SENT,
#endif
#ifdef CONFIG_NF_CT_PROTO_DCCP
NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST,
......@@ -887,18 +885,6 @@ static struct ctl_table nf_ct_sysctl_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
[NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED] = {
.procname = "nf_conntrack_sctp_timeout_heartbeat_acked",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
[NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_DATA_SENT] = {
.procname = "nf_conntrack_sctp_timeout_data_sent",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
#endif
#ifdef CONFIG_NF_CT_PROTO_DCCP
[NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST] = {
......@@ -1042,8 +1028,6 @@ static void nf_conntrack_standalone_init_sctp_sysctl(struct net *net,
XASSIGN(SHUTDOWN_RECD, sn);
XASSIGN(SHUTDOWN_ACK_SENT, sn);
XASSIGN(HEARTBEAT_SENT, sn);
XASSIGN(HEARTBEAT_ACKED, sn);
XASSIGN(DATA_SENT, sn);
#undef XASSIGN
#endif
}
......
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